WO2023246413A1

WO2023246413A1 - System control circuit, indication assembly, and electronic atomization apparatus

Info

Publication number: WO2023246413A1
Application number: PCT/CN2023/096067
Authority: WO
Inventors: 宋利军; 宋朋亮; 贺玉婷
Original assignee: 西安稳先半导体科技有限责任公司
Priority date: 2022-06-21
Filing date: 2023-05-24
Publication date: 2023-12-28

Abstract

A system control circuit (200) used for driving an indicator light (120), and an indication assembly and an electronic atomization apparatus. The system control circuit (200) comprises: a first switch unit (K1), wherein a control end thereof is electrically connected to a switch control unit, a first end thereof is electrically connected to a power supply end (BAT), and a second end thereof is electrically connected to the indicator light (120) and a first end of a first capacitor (C1); and a second switch unit (K2), wherein a control end thereof is electrically connected to the switch control unit, a first end thereof is electrically connected to the power supply end (BAT), a second end thereof is electrically connected to a second end of the first capacitor (C1), and the second end is also indirectly and electrically connected to a power supply grounding end (GND). The switch control unit controls the first switch unit (K1) to switch on and the second switch unit (K2) to switch off, so as to charge the first capacitor (C1), and the switch control unit controls the second switch unit (K2) to switch on and the first switch unit (K1) to switch off, such that the potential of the first end of the first capacitor (C1) is raised for driving the indicator light (120).

Description

System control circuit, indicating components and electronic atomization device

This application is required to be submitted to the China Patent Office on June 21, 2022. The application number is CN202210707571.3, and the application name is "System control circuit, indicator component and electronic atomization device for driving indicator lights", and it is required to be submitted to the China Patent Office on June 21, 2022. Submitted to the China Patent Office on June 21, the application number is CN202210707576.6, the application name is "System control circuit, indicator component and electronic atomization device for driving indicator light", and it is required to be submitted to the China Patent Office on June 21, 2022 , the application number is CN202210723125.1, the application name is "System control circuit, indicator component and electronic atomization device for driving indicator light", and it is required to be submitted to the China Patent Office on June 30, 2022, and the application number is CN202210772890.2 , the application name is "A system control circuit, indicating component and electronic atomization device", and it is required to be submitted to the China Patent Office on September 2, 2022, the application number is CN202211074256.8, the application name is "Driving indicator light" System control circuit, indicating component and electronic atomization device", and it is required to be submitted to the China Patent Office on September 2, 2022. The application number is CN202211074254.9 and the application name is "System control circuit, indicating component and driving indicator light. Electronic atomization device", and it is required to be submitted to the China Patent Office on September 2, 2022, with the application number CN202211074255.3 and the application name "System control circuit, indicator component and electronic atomization device for driving indicator lights" in China Priority is granted to patent applications, and the contents of the above-mentioned earlier applications are incorporated by reference into this application.

Technical field

The present application relates to the field of electronic atomization technology, and in particular to a system control circuit, a system control circuit for driving an indicator light, an indicating component and an electronic atomization device.

Background technique

Existing electronic atomization devices, such as e-cigarettes, generally include indicator lights. The indicator lights generally use LED lights. The LED lights generally include white LED lights, blue LED lights, etc. The forward voltage range of these LED lights is generally greater than or Equal to 2.5V, generally 2.5V-3.6V, such as 3V. Existing electronic atomization devices use low-voltage power supplies instead of ordinary power supplies. This can increase the number of suction ports of the electronic devices and reduce the cost of the electronic atomization devices. However, the output voltage range of low-voltage power supplies is generally 1.5V-3.6V (nominal voltage is generally 2.8V). Compared with the output voltage range of ordinary power supplies, which is 2.5V-4.2V (nominal voltage is generally 3.7V), the output voltage range of low-voltage power supplies is generally 3.7V. The output voltage is relatively low, causing the indicator light to not glow stably.

Contents of the invention

The technical problem to be solved by the embodiments of the present application is to provide a system control circuit, an indicating component and an electronic atomization device for driving an indicator light. The indicator light can be driven stably.

In order to solve the above technical problems, the first aspect of the embodiment of the present application provides a system control circuit for driving an indicator light, including:

A power supply terminal, a power ground terminal and a switch control unit. The power supply terminal and the power ground terminal are used to electrically connect to the positive and negative poles of the power supply. The switch control unit is electrically connected to the power supply terminal and the power ground terminal respectively. connect;

The first switch unit has a control end electrically connected to the switch control unit, a first end electrically connected to the power supply end, and a second end used to be electrically connected to the indicator light and the first end of the first capacitor;

The second switch unit has a control end electrically connected to the switch control unit, a first end electrically connected to the power supply end, a second end electrically connected to the second end of the first capacitor, and a second end electrically connected to the second end of the first capacitor. The terminal is also indirectly electrically connected to the ground terminal of the power supply;

Wherein, the switch control unit controls the first switch unit to be on and the second switch unit to be off to charge the first capacitor, and the switch control unit controls the second switch unit to be on and controls The first switch unit is turned off so that the potential of the first terminal of the first capacitor is raised for driving the indicator light.

Optionally, the system control circuit further includes a third switch unit, the control end of which is electrically connected to the switch control unit, the first end of which is electrically connected to the second end of the first capacitor, and the second end of which is electrically connected to the second end of the first capacitor. terminal is electrically connected to the ground terminal of the power supply, wherein when boosting is required, when the first switch unit is turned on, the third switch unit is turned on, and when the first switch unit is turned off When the third switch unit is turned off.

Optionally, the switch control unit includes a first drive unit, and the first drive unit is electrically connected to the control terminal of the first switch unit.

Optionally, the first switching unit includes a PMOS transistor, and the first driving unit includes an inverter, a first NMOS transistor, a second NMOS transistor, a first PMOS transistor and a second PMOS transistor, wherein the inverter The input end of the phase inverter is electrically connected to the control end of the second switch unit, the output end of the inverter is electrically connected to the control end of the first NMOS tube, and the source of the first NMOS tube is connected to the power supply. The ground terminal is electrically connected, and its drain is electrically connected to the drain of the first PMOS tube and the control terminal of the second PMOS tube respectively. The control terminal of the first PMOS tube is electrically connected to the drain of the second NMOS tube. The first The source of the PMOS tube is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, the control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit, The drains of the two NMOS transistors are also electrically connected to the drains of the second PMOS transistors, the sources of the second PMOS transistors are electrically connected to the second end of the first switching unit, and the drains of the second NMOS transistors are also used to control the first Whether the switch unit is conductive; or,

The switch control unit also includes a logic control unit, and the input end of the first driving unit is electrically connected to the logic control unit; or,

The first switching unit includes an NMOS tube, the first driving unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the first switching unit, and the second The input end of the boost circuit is electrically connected to the control end of the second switch unit; or,

The switch control unit also includes a logic control unit, the first switch unit includes an NMOS tube, the first drive unit includes a second boost circuit, and the output end of the second boost circuit is connected to the first switch. The control terminal of the unit is electrically connected, and the input terminal of the second boost circuit is electrically connected with the logic control unit.

Optionally, the switch control unit further includes a second drive unit, and the second drive unit is electrically connected to the control terminal of the second switch unit.

Optionally, the switch control unit further includes a logic control unit, the second switch unit includes a PMOS transistor, and the second drive unit includes a third NMOS transistor and a third PMOS transistor, wherein the third NMOS transistor The source is electrically connected to the power ground terminal, the control end of the third NMOS transistor and the control end of the third PMOS transistor are both electrically connected to the logic control unit, and the drain of the third NMOS transistor is electrically connected to the third NMOS transistor. The drains of the three PMOS tubes are electrically connected, the source of the third PMOS tube is electrically connected to the power supply terminal, and the drain of the third NMOS tube is also used to control whether the second switch unit is turned on.

Optionally, the system control circuit further includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and the first end of the third switch unit is used to connect to the second end of the first capacitor. Electrically connected, its second end is electrically connected to the ground terminal of the power supply;

The switch control unit also includes a third drive unit and a logic control unit. The third drive unit is electrically connected to the control end of the third switch unit. The logic control unit is respectively connected to the second drive unit and the third switch unit. Three drive units are electrically connected.

Optionally, the third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, so The control end of the fourth NMOS transistor and the control end of the fourth PMOS transistor are both electrically connected to the logic control unit. The drain of the fourth NMOS transistor is electrically connected to the drain of the fourth PMOS transistor. The fourth The source of the PMOS tube is electrically connected to the power supply terminal, and the drain of the fourth NMOS tube is also used to control whether the third switch unit is turned on.

Optionally, the logic control unit further includes a first logic gate and a second logic gate, wherein the first input terminal of the first logic gate is connected to a clock signal, and the third input terminal of the first logic gate is connected to the clock signal of the third switching unit. The control terminal is electrically connected, and its output terminal is electrically connected to the second driving unit; the first input terminal of the second logic gate is electrically connected to the control terminal of the second switch unit, and its second input terminal is connected to the clock. signal, the output end of which is electrically connected to the third driving unit.

Optionally, the system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The light control unit is electrically connected to the second input end of the first logic gate to So that the indicator light is not lit when it is not needed; or,

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate; or,

The system control circuit also includes a light control unit and a clock signal generation unit. The light control unit is used to control whether the indicator light emits light. The clock signal generation unit is used to generate a clock signal. The clock signal generation unit has The enable terminal is electrically connected to the light control unit. When the light control unit is used to control the indicator light to light, the light control unit controls the clock signal generation unit to work to generate a clock signal. When the light control unit The light-on control unit is used to control the clock signal generating unit to stop working when the indicator light goes out.

Optionally, the system control circuit includes a power supply judgment unit, which is electrically connected to the power supply terminal and the power supply ground terminal respectively to obtain a detection voltage that represents the voltage of the power supply terminal. The power supply judgment unit is used to judge the detection. Whether the voltage is greater than the first reference voltage, the power supply judgment unit is electrically connected to the switch control unit. When the power supply judgment unit judges that the detected voltage is greater than the first reference voltage, the power supply judgment unit outputs a first signal to the Switch control unit, the switch control unit controls the first switch unit to be normally on and the second switch unit to be normally off; when the power supply judgment unit judges that the detection voltage is less than the first reference voltage, the power supply judgment unit outputs The second signal is given to the switch control unit, and the switch control unit is used to control the potential of the first end of the first capacitor to be raised to drive the indicator light.

Optionally, the power supply judgment unit includes a voltage comparison unit. The first input terminal of the voltage comparison unit is connected to the detection voltage, and the second input terminal of the comparison unit is connected to the first reference voltage. The voltage comparison unit The output end is electrically connected to the switch control unit. When the detection voltage is greater than the first reference voltage, the system control circuit outputs a first signal to the switch control unit. When the detection voltage is less than the first reference voltage, When a reference voltage is provided, the system control circuit outputs a second signal to the switch control unit.

Optionally, the system control circuit includes a light control unit, which is used to control whether the indicator light emits light. The light control unit is electrically connected to the enable end of the voltage comparison unit to control voltage comparison. Whether the unit is working, when the light control unit is used to control the indicator light to light, the light control unit controls the voltage comparison unit to work.

Optionally, the system control circuit also includes a low voltage dropout linear regulator, the input terminal of the low voltage dropout linear regulator is electrically connected to the power supply terminal, and its output terminal is connected to the first terminal of the first switching unit. , the first end of the second switch unit is electrically connected, and the low voltage dropout linear regulator is used to make the voltage at its output end less than or equal to the preset voltage.

Optionally, the low-dropout linear regulator includes an operational amplifier, a first sampling resistor, a second sampling resistor, and an adjustment tube, wherein the first end of the adjustment tube is an input end, and the second end of the adjustment tube is an input end. The terminal is an output terminal, the control terminal of the adjustment tube is electrically connected to the output terminal of the operational amplifier, the non-inverting terminal of the operational amplifier is connected to the second reference voltage, and the reverse terminal of the operational amplifier is connected to the third reference voltage. The first ends of the two sampling resistors are electrically connected, the first end of the first sampling resistor is electrically connected to the second end of the adjustment tube, and the second end of the first sampling resistor is electrically connected to the second end of the second sampling resistor. The first end is electrically connected, and the second end of the second sampling resistor is electrically connected to the power ground end.

Optionally, the adjustment tube includes a triode or MOS tube; or,

The range of the preset voltage is 1.5V-3V; or,

The system control circuit includes a light control unit, which is used to control whether the indicator light emits light. The light control unit is electrically connected to the enable end of the operational amplifier to control whether the operational amplifier works. The light-on control unit is used to control the operation of the operational amplifier when the indicator light is turned on. The light-on control unit controls the operation of the operational amplifier when the indicator light is turned off.

Optionally, the system control circuit is located on the same chip, the power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. The system control circuit also includes a first light-emitting pin, a third light-emitting pin, and a first light-emitting pin. two light-emitting pins and a third light-emitting pin, the first light-emitting pin is used to be electrically connected to the first end of the first capacitor and the first end of the indicator light, and the second light-emitting pin is used to be connected to the second end of the first capacitor. terminal and the second terminal of the second switch unit are electrically connected, and the third light-emitting pin is used to be electrically connected to the second terminal of the indicator light; or,

The system control circuit is located on the same chip, the power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. The system control circuit also includes a first light-emitting pin and a second light-emitting pin. and a third light-emitting pin. The first light-emitting pin is used to electrically connect with the first end of the first capacitor and the second end of the first switch unit. The second light-emitting pin is used with the second end of the first capacitor and the second end of the first switch unit. The second end of the second switch unit is electrically connected, the third light-emitting pin is used for electrical connection with the first end of the indicator light and the second end of the first switch unit, and the power ground pin is used for electrical connection with the second end of the indicator light. electrical connection; or,

When the first switch unit is turned on, the voltage between its source and drain is less than 0.1V; or,

The system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The system control circuit also includes a fourth switch unit or a current source. The fourth switch unit or the A current source is used to be connected in series with the indicator light, and the fourth switch unit or the control end of the current source is electrically connected to the light control unit; or,

The first switch unit is manufactured by a low-voltage process less than or equal to 6V; or,

The switch control unit also includes a logic control unit, which is electrically connected to the control terminal of the second switch unit.

The second aspect of the embodiment of the present application provides an indication component, including

The above system control circuit;

An indicator light, which is electrically connected to the second end of the first switch unit;

A first capacitor, a first end of which is electrically connected to the second end of the first switching unit, and a second end of which is electrically connected to the second end of the second switching unit;

The positive and negative poles of the power supply are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.

Optionally, the power supply voltage range provided by the power supply includes 1.5V-3.6V; or,

The power supply includes a battery core; or,

The indicator light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V.

The third aspect of the embodiment of the present application provides an electronic atomization device, including:

The above-mentioned system control circuit or the above-mentioned indicating component.

The system control circuit in the embodiment of the present application includes a first switch unit, a second switch unit and a switch control unit. The switch control unit controls the first switch unit to be turned on and the second switch unit to be turned off to charge the first capacitor. The switch control unit controls the second switch unit to be turned on and the first switch unit to be turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light, so that even if the power supply is a low-voltage power supply, the low-voltage power supply After the low voltage is raised, it is also greater than or equal to the minimum forward conduction voltage of the indicator light, so that the indicator light can be driven by the low-voltage power supply normally, and the indicator light can work normally within the entire working range of the low-voltage power supply. Moreover, by controlling the conduction of the first switch unit to charge the first capacitor, the conduction voltage drop of the first switch unit is almost negligible, generally less than 0.1V. Therefore, when the second switch unit is turned on, the first capacitor's voltage drop is almost negligible. The voltage at one end is raised higher, thus this application greatly improves the voltage range in which the low-voltage power supply can drive the indicator light, and the brightness of the driving indicator light is brighter, and the user experience is better; in addition, through the first switch The unit controls whether to charge the first capacitor and whether to boost the voltage to drive the indicator light. The first switch unit is a controllable component and is convenient for control.

The fourth aspect of the embodiment of the present application provides a system control circuit for driving an indicator light, including:

A power supply terminal and a power ground terminal, which are used to electrically connect to the positive and negative poles of the power supply;

A power supply judgment unit, which is electrically connected to the power supply terminal and the power supply ground terminal respectively for obtaining a detection voltage that represents the voltage of the power supply terminal. The power supply judgment unit is used to determine whether the detection voltage is greater than the first reference voltage. When the power supply When the judgment unit judges that the detection voltage is greater than the first reference voltage, the system control circuit operates in the first mode; when the power supply judgment unit judges that the detection voltage is less than the first reference voltage, the system control circuit operates in the second mode. model;

Wherein, in the first mode, the voltage of the power supply terminal is directly used to drive the indicator light, and in the second mode, the voltage of the power supply terminal is boosted and used to drive the indicator light.

Optionally, the power supply judgment unit includes a voltage comparison unit. The first input terminal of the voltage comparison unit is connected to the detection voltage, and the second input terminal of the comparison unit is connected to the first reference voltage. When the detection voltage When the detection voltage is greater than the first reference voltage, the power supply judgment unit outputs a first signal to cause the system control circuit to operate in the first mode. When the detection voltage is less than the first reference sub-voltage, the power supply judgment unit outputs a first signal. The second signal causes the system control circuit to operate in the second mode.

Optionally, the system control circuit includes a light control unit, which is used to control whether the indicator light emits light. The light control unit is electrically connected to the enable end of the voltage comparison unit to control voltage comparison. Whether the unit is working, when the light control unit is used to control the indicator light to light, the light control unit controls the voltage comparison unit When the light-on control unit is used to control the indicator light to turn off, the light-on control unit controls the voltage comparison unit to stop working.

Optionally, the power supply judgment unit further includes a first voltage dividing resistor and a second voltage dividing resistor, wherein the first end of the first voltage dividing resistor is electrically connected to the power supply terminal, and the third voltage dividing resistor of the first voltage dividing resistor is electrically connected to the power supply terminal. The two ends are electrically connected to the first end of the second voltage dividing resistor, the second end of the second voltage dividing resistor is electrically connected to the power ground terminal, and the second end of the first voltage dividing resistor is also connected to the voltage comparison unit. The first input terminal is electrically connected to output the detection voltage.

Optionally, the system control circuit includes:

A first power supply unit, a first end of which is electrically connected to the power supply end, and a second end of which is used to be electrically connected to the indicator light, and the first power supply unit is used to drive the indicator light with the voltage of the power supply end;

The second power supply unit has a first end that is electrically connected to the power supply end, and a second end that is used to electrically connect with the indicator light. The second power supply unit is used to boost the voltage of the power supply end;

In the first mode, the first power supply unit works to make the voltage of the power supply terminal drive the indicator light. In the second mode, the second power supply unit works to boost the voltage of the power supply terminal to drive the indicator light.

Optionally, the second power supply unit includes the first power supply unit.

Optionally, the system control circuit also includes a switch control unit, the power supply judgment unit is electrically connected to the switch control unit, and the switch control unit is electrically connected to the power supply terminal and the power ground terminal respectively;

The first power supply unit includes a first switch unit. The control end of the first switch unit is electrically connected to the switch control unit. The first end of the first switch unit is electrically connected to the power supply end. The second end of the first switch unit is used to connect to the indicator light. , the first terminal of the first capacitor is electrically connected;

The second power supply unit includes a second switch unit, the control end of which is electrically connected to the switch control unit, the first end of which is electrically connected to the power supply end, and the second end of which is used to connect to the second capacitor of the first capacitor. terminal is electrically connected, and its second terminal is also indirectly electrically connected to the ground terminal of the power supply;

Wherein, in the first mode, the switch control unit controls the first switch unit to be always on and the second switch unit to be always off. In the second mode, during the first time period, the switch control unit controls the first switch unit to be on. The second switch unit is turned on and the second switch unit is turned off to charge the first capacitor. In the second time period, the switch control unit controls the second switch unit to be turned on and the first switch unit is turned off to charge the first capacitor. The potential of the first terminal is raised for driving the indicator light.

Optionally, the system control circuit also includes a switch control unit, the switch control unit is electrically connected to the power supply judgment unit, and the switch control unit is electrically connected to the power supply terminal and the power ground terminal respectively;

The first power supply unit includes a fifth switch unit. The control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply end. The second end of the fifth switch unit is used to connect to the indicator light. electrical connection;

The second power supply unit includes a first voltage boosting unit, a first end of the first voltage boosting unit is electrically connected to the power supply terminal, and a second end of the first voltage boosting unit is used to be electrically connected to an indicator light. The control end of the pressure unit is electrically connected to the switch control unit;

Wherein, in the first mode, the switch control unit controls the fifth switch unit to be normally turned on, and in the second mode, the switch control unit controls the first boost unit to operate so that the voltage at the power supply end is boosted for use. To drive the indicator light, and the switch control unit controls the fifth switch unit to be normally turned off.

Optionally, the first boost unit includes a second switching unit and a first switching unit, wherein the first end of the second switching unit and the first end of the first switching unit are both connected to the power supply. The power supply end is electrically connected, the second end of the first switch unit is used to be electrically connected to the first end of the first capacitor and the indicator light, and the control end of the first switch unit is electrically connected to the switch control unit, so The control end of the second switch unit is electrically connected to the switch control unit, its second end is used to be electrically connected to the second end of the first capacitor, and its second end is also indirectly electrically connected to the ground end of the power supply;

In the second mode, in the first time period, the switch control unit controls the first switch unit to be turned on and the second switch unit to be turned off to charge the first capacitor, and in the second time period, the switch control unit controls The second switch unit is turned on and the first switch unit is turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light.

Optionally, the system control circuit further includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and the first end of the third switch unit is used to connect to the second end of the first capacitor. Electrically connected, the second end of which is electrically connected to the ground terminal of the power supply, wherein when boosting is required, when the first switching unit is turned on, the third switching unit is turned on, and when the first switching unit is turned off When the third switch unit is turned off.

Optionally, the switch control unit includes a first drive unit, the first drive unit is electrically connected to the control terminal of the first switch unit; and,

The first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, a first PMOS tube, and a second PMOS tube, wherein the input of the inverter The terminal is electrically connected to the control terminal of the second switch unit, the output terminal of the inverter is electrically connected to the control terminal of the first NMOS tube, and the source of the first NMOS tube is electrically connected to the power ground terminal. , its drain is electrically connected to the drain of the first PMOS transistor and the control end of the second PMOS transistor, the control end of the first PMOS transistor is electrically connected to the drain of the second NMOS transistor, and the source of the first PMOS transistor is electrically connected. The pole of the second NMOS is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, the control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit, and the second NMOS tube The drain is also electrically connected to the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected to the second terminal of the first switch unit, and the drain of the second NMOS transistor is also used to control whether the first switch unit is conductive. pass; or,

The switch control unit also includes a logic control unit, the first switch unit includes an NMOS tube, the first drive unit includes a second boost circuit, and the output end of the second boost circuit is connected to the first switch. The control end of the unit is electrically connected, and the input end of the second boost circuit is electrically connected to the logic control unit; or,

The first switch unit is manufactured by a low-voltage process of less than or equal to 6V.

Optionally, the switch control unit further includes a second drive unit, which is electrically connected to the control terminal of the second switch unit; the switch control unit further includes a logic control unit, and the second drive unit is electrically connected to the control terminal of the second switch unit. The switching unit includes a PMOS tube, and the second driving unit includes a third NMOS tube and a third PMOS tube, wherein the source of the third NMOS tube is electrically connected to the power ground terminal, and the control terminal of the third NMOS tube , the control terminals of the third PMOS tube are electrically connected to the logic control unit, the drain of the third NMOS tube is electrically connected to the drain of the third PMOS tube, and the source of the third PMOS tube is electrically connected to The power supply terminal is electrically connected, and the drain of the third NMOS tube is also used to control whether the second switch unit is turned on; or,

Optionally, the system control circuit further includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and the first end of the third switch unit is electrically connected to the second end of the second switch unit. Connection, the second end of which is electrically connected to the ground terminal of the power supply;

The switch control unit also includes a third drive unit, the third drive unit is electrically connected to the control terminal of the third switch unit, and the logic control unit is electrically connected to the second drive unit and the third drive unit respectively. connect;

The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, and the fourth NMOS transistor The control end of the tube and the control end of the fourth PMOS tube are both electrically connected to the logic control unit, the drain of the fourth NMOS tube is electrically connected to the drain of the fourth PMOS tube, and the source of the fourth PMOS tube The drain electrode of the fourth NMOS transistor is also used to control whether the third switch unit is turned on.

The system control circuit also includes a clock signal generating unit, the clock signal generating unit is used to generate a clock signal, and the clock signal generating unit stops working in the first mode; or,

Optionally, the system control circuit is located on the same chip; or,

The system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The system control circuit also includes a fourth switch unit or a current source. The fourth switch unit or the The current source is used to be connected in series with the indicator light, and the fourth switch unit or the control end of the current source is electrically connected to the light control unit.

The fifth aspect of the embodiment of the present application provides an indication component, including

The above system control circuit;

An indicator light, which is electrically connected to the system control circuit;

The positive and negative poles of the power supply are correspondingly electrically connected to the power supply terminal and the power ground terminal of the system control circuit.

Optionally, the power supply voltage range provided by the power supply includes 1.5V-5V; or,

The indication component further includes a first capacitor, the first end of the first capacitor and the indicator light are both electrically connected to the same end of the system control circuit, and the second end of the first capacitor is indirectly electrically connected to the power ground end. connection; or,

The power supply includes a battery core; or,

The sixth aspect of the embodiment of the present application provides an electronic atomization device, including:

The system control circuit in the embodiment of the present application includes a power supply judgment unit. The power supply judgment unit is used to judge whether the detection voltage is greater than the first reference voltage. When the power supply judgment unit judges that the detection voltage is greater than the first reference voltage, the system control circuit works in In the first mode, when the power supply judgment unit determines that the detection voltage is less than the first reference voltage, the system control circuit operates in the second mode; wherein in the first mode, the voltage of the power supply terminal is directly used to drive the indicator light. , which is conducive to improving the energy utilization rate of the power supply. In the second mode, the voltage at the power supply terminal is boosted and used to drive the indicator light. Even if the power supply voltage is relatively low, the indicator light can be lit normally after boosting and the brightness is relatively bright. , which is conducive to the normal use of the indicator light. Moreover, when the detection voltage is higher than the first reference voltage, the indicator light is directly driven without boosting, and the voltage is only boosted when the detection voltage is lower than the first reference voltage, so that the switching elements in the system control circuit will not bear a large load. The voltage is not easily damaged, and the peak voltage generated by the switching element in the system control circuit when turned off is not large, which will not damage the switching element, and the peak voltage will not damage the indicator light.

The seventh aspect of the embodiment of the present application provides a system control circuit for driving an indicator light, including:

A step-down unit, which is electrically connected to the power supply end and the power ground end, and is used to make the voltage at the output end of the step-down unit less than or equal to the preset voltage;

The input end of the first boost unit is electrically connected to the output end of the buck unit, and its output end is used to electrically connect with the indicator light. The first boost unit is used to boost the voltage at the output end of the buck unit, to drive the indicator light.

Optionally, the step-down unit includes a low-voltage dropout linear regulator, the input end of the low-dropout linear regulator is electrically connected to the power supply end, and its output end is electrically connected to the first boost unit, so The low dropout linear voltage regulator is used to make the voltage at the output terminal less than or equal to a preset voltage.

Optionally, the low dropout linear regulator includes an operational amplifier, a first sampling resistor, a second sampling resistor, an adjustment tube, wherein the first end of the adjustment tube is the input end of the low voltage dropout linear regulator, the second end of the adjustment tube is the output end of the low voltage dropout linear regulator, and the adjustment tube The control end of the operational amplifier is electrically connected to the output end of the operational amplifier, the non-inverting end of the operational amplifier is connected to the second reference voltage, and the reverse end of the operational amplifier is electrically connected to the first end of the second sampling resistor. , the first end of the first sampling resistor is electrically connected to the second end of the adjustment tube, the second end of the first sampling resistor is electrically connected to the first end of the second sampling resistor, the third The second terminal of the two sampling resistors is electrically connected to the ground terminal of the power supply.

Optionally, the adjustment tube includes a transistor or a MOS tube; or, the preset voltage range is 1.5V-3V.

Optionally, the system control circuit includes a light control unit, which is used to control whether the indicator light emits light. The light control unit is electrically connected to the enable end of the operational amplifier to control whether the operational amplifier Work, when the light control unit is used to control the indicator light to turn on, the light control unit controls the operation of the operational amplifier, and when the light control unit is used to control the indicator light to go out, the light control unit controls the operation The amplifier stops working.

Optionally, the buck unit includes a Buck circuit; and/or the first boost unit includes a boost circuit.

Optionally, the system circuit includes a switch control unit, which is electrically connected to the power supply terminal and the power ground terminal respectively;

The first boost unit includes:

Wherein, the switch control unit controls the first switch unit to be on and the second switch unit to be off to charge the first capacitor, and the switch control unit controls the second switch unit to be on and the first switch unit to be on. cut off so that the potential of the first end of the first capacitor is raised for driving the indicator light.

Optionally, the system control circuit further includes a third switch unit, the control end of which is electrically connected to the switch control unit, the first end of which is electrically connected to the second end of the first capacitor, and the second end of which is electrically connected to the second end of the first capacitor. The terminal is electrically connected to the ground terminal of the power supply, wherein when the voltage needs to be boosted, the third switch unit is turned on when the first switch unit is turned on, and the third switch is turned off when the first switch unit is turned off. Unit deadline.

The first switching unit includes an NMOS transistor, the first driving unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the first switching unit, and the second The input end of the boost circuit is electrically connected to the control end of the second switch unit; or,

Optionally, the switch control unit also includes a second drive unit, and the second drive unit is connected to the second switch unit. The control end of the element is electrically connected;

The switch control unit also includes a logic control unit, the second switch unit includes a PMOS transistor, and the second drive unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is connected to The ground terminal of the power supply is electrically connected, the control terminal of the third NMOS tube and the control terminal of the third PMOS tube are electrically connected to the logic control unit, and the drain of the third NMOS tube is electrically connected to the drain of the third PMOS tube. connection, the source of the third PMOS tube is electrically connected to the power supply terminal, and the drain of the third NMOS tube is also used to control whether the second switch unit is turned on; or,

Optionally, the system control circuit further includes a third switch unit, the control end of which is electrically connected to the switch control unit, the first end of which is electrically connected to the second end of the second switch unit, and the second end of which is electrically connected to the second end of the second switch unit. Electrically connected to the ground terminal of the power supply;

Optionally, the logic control unit further includes a first logic gate and a second logic gate, wherein the first input end of the first logic gate is connected to a clock signal, and the third input end of the first logic gate is connected to the third input end of the third switch unit. The control terminal is electrically connected, and its output terminal is electrically connected to the second driving unit; the first input terminal of the second logic gate is electrically connected to the control terminal of the second switch unit, and its second input terminal is connected to the clock. signal, the output end of which is electrically connected to the third driving unit.

Optionally, the system control circuit is located on the same chip, the power supply terminal is a power supply pin, the power ground terminal is a power ground pin, and the system control circuit also includes a first light-emitting pin, so The first light-emitting pin is electrically connected to the output end of the first boost unit, and the first light-emitting pin is used to be electrically connected to the indicator light; or,

The eighth aspect of the embodiment of the present application provides an indication component, including

The above system control circuit;

An indicator light, which is electrically connected to the first boost unit of the system control circuit;

Power supply, its positive and negative poles are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.

Optionally, the power supply voltage provided by the power supply ranges from 1.5V to 5V; or,

The indication component also includes a first capacitor, the first end of the first capacitor and the indicator light are both electrically connected to the same end of the first boost unit, and the second end of the first capacitor is indirectly connected to the power supply ground. terminal electrical connection; or,

The indicator light is an LED light, the LED light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V; or,

The power supply includes battery cells.

The ninth aspect of the embodiment of the present application provides an electronic atomization device, including:

The above-mentioned system control circuit or the above-mentioned indicating component

The system control circuit of the embodiment of the present application includes a buck unit and a first boost unit. The buck unit is used to make the voltage of the output terminal of the buck unit less than or equal to the preset voltage. The output terminal of the first boost unit is used to communicate with The indicator light is electrically connected, and the first voltage boosting unit is used to boost the voltage at the output end of the voltage reducing unit to drive the indicator light. Therefore, no matter whether the voltage of the power supply terminal is high or low, the voltage at the output terminal is less than or equal to the preset voltage after passing through the voltage reducing unit, and then is boosted by the first voltage boosting unit, so that the indicator light can be stably driven to emit light stably. Moreover, the switch unit in the first boost unit generally uses a low-voltage process. The output voltage of the buck unit is less than or equal to the preset voltage. The output voltage of the buck unit is then boosted by the first boost unit. The boost The final voltage will be lower and lower than the withstand voltage value of the MOS tube, so the switch unit in the first boost unit will not withstand a relatively large voltage, and the switch unit in the first boost unit will not be easily damaged. Moreover, since the output voltage of the buck unit is less than or equal to the preset voltage, even after the voltage is boosted by the first boost unit, the voltage spike endured by the switch unit when it is turned off will be relatively small, and the first switch unit and the indicator light will not easily damage.

The tenth aspect of the embodiment of the present application provides a system control circuit for driving an indicator light of an electronic atomization device, including:

A power supply terminal, a power ground terminal, and a heating control unit. The power supply terminal and power ground terminal are used to electrically connect to the positive and negative poles of the power supply;

The atomizing terminal is used to electrically connect with the first terminal of the heating element, the power ground terminal is used to electrically connect with the second terminal of the heating element, and the atomizing terminal is used to electrically connect with the second terminal of the first capacitor. connect;

The first switch unit has a first end electrically connected to the power supply end, a second end electrically connected to the atomization end, and a control end electrically connected to the heating control unit;

The second one-way conducting element has a first end electrically connected to the power supply end, and a second end used to be electrically connected to the first end of the first capacitor and the indicator light;

Wherein, the first switch unit is turned off and the second one-way conductive element is turned on to charge the first capacitor, and the first switch unit is turned on and the second one-way conductive element is turned off to charge the first capacitor. The potential of the first terminal of the first capacitor is raised for driving the indicator light.

Optionally, the second one-way conduction element includes a second switch unit, the control end of the second switch unit is electrically connected to the heating control unit, and the heating control unit controls the first switching unit to turn off and The second switch unit is turned on to charge the first capacitor, and the heating control unit controls the first switch unit to be turned on and the second switch unit to be turned off to increase the potential of the first end of the first capacitor. is lifted and used to drive the indicator light.

Optionally, the heating control unit includes a second drive unit, and the output end of the second drive unit is used to control whether the second switch unit is turned on.

Optionally, the second switching unit includes a PMOS transistor, and the second driving unit includes an inverter, a second NMOS transistor, a third NMOS transistor, a second PMOS transistor and a third PMOS transistor, wherein the inverter The input end of the phase inverter is electrically connected to the control end of the first switch unit, the output end of the inverter is electrically connected to the control end of the second NMOS tube, and the source of the second NMOS tube is connected to the power supply. The ground terminal is electrically connected, and its drain is electrically connected to the drain of the second PMOS tube and the control terminal of the third PMOS tube respectively. The control terminal of the second PMOS tube is electrically connected to the drain of the third NMOS tube. The second The source of the PMOS tube is electrically connected to the second terminal of the second switch unit, the source of the third NMOS is electrically connected to the power ground terminal, and the control terminal of the third NMOS is electrically connected to the control terminal of the first switch unit. The drains of the three NMOS transistors are also electrically connected to the drains of the third PMOS transistors, the sources of the third PMOS transistors are electrically connected to the second terminal of the first switching unit, and the drains of the third NMOS transistors are also used to control the second Whether the switch unit is conductive; or,

The heating control unit also includes a heating logic unit, and the input end of the second driving unit is electrically connected to the heating logic unit; or,

The second switch unit includes an NMOS transistor, the second drive unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the second switch unit, and the second The input end of the driving unit is electrically connected to the control end of the first switch unit; or,

The heating control unit also includes a heating logic unit, the second switch unit includes an NMOS tube, and the second driver The driving unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the second switch unit, and the input end of the second driving unit is electrically connected to the heating logic unit; or,

When the second switch unit is turned on, the voltage between its source and drain is less than 0.1V.

Optionally, the second one-way conduction element includes a diode, the anode of the diode is the first end of the second one-way conduction element, and the cathode of the diode is the third end of the second one-way conduction element. Two ends.

Optionally, the first switch unit includes a PMOS tube, the source of the PMOS tube is electrically connected to the power supply terminal, the drain of the PMOS tube is electrically connected to the atomization terminal, and the control of the PMOS tube The end is electrically connected to the heating control unit; or,

The system control circuit also includes a suction detection unit and a suction detection terminal. The suction detection terminal is used to be electrically connected to the air flow sensor. The suction detection unit is electrically connected to the suction detection terminal and the heating control unit respectively. connection, when the suction detection unit determines that the electronic atomization device is in a suction state, the suction detection unit outputs a first signal to the heating control unit, and when the suction detection unit determines that the electronic atomization device is in a non-smoking state, the suction detection unit outputs a first signal to the heating control unit. In the suction state, the suction detection unit sends a second signal to the heating control unit. When the heating control unit receives the first signal, the heating control unit outputs a duty cycle signal to the first switch unit. When the heating control unit receives the second signal, the heating control unit controls the first switch unit to be normally turned off.

Optionally, the system control circuit is located on the same chip or the circuits of the system control circuit except the first switch unit are located on the same chip, the power supply terminal is a power supply pin, and the power ground terminal is The power supply ground pin, the atomization terminal is the atomization pin, the system control circuit also includes a first light-emitting pin and a second light-emitting pin, the first light-emitting pin is used to communicate with the first end of the first capacitor , the first end of the indicator light and the second end of the second one-way conductive element are electrically connected, and the second light-emitting pin is used to be electrically connected to the second end of the indicator light; or,

The system control circuit is located on the same chip or the circuits of the system control circuit except the first switch unit are located on the same chip. The power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. , the atomization end is an atomization pin, and the system control circuit also includes a first light-emitting pin and a second light-emitting pin. The first light-emitting pin is used to communicate with the first end of the first capacitor and the second single be electrically connected to the second end of the conductive element, the second light-emitting pin is used to be electrically connected to the first end of the indicator light, and the power ground pin is used to be electrically connected to the second end of the indicator light; or,

The system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The system control circuit also includes a third switch unit or a current source. The third switch unit or the The current source is used to be connected in series with the indicator light, and the third switch unit or the control end of the current source is electrically connected to the light control unit; when the electronic atomization device is in the suction state, the third switch unit or the control end of the current source is electrically connected to the light control unit. The switch unit and the first switch unit are turned on or off synchronously, or when the electronic atomization device is in the suction state and the first switch unit is turned on, the current source works synchronously and the first switch unit is turned on or off synchronously. The current source does not work synchronously when the switch unit is turned off, or when the electronic atomization device is in the suction state, the conduction time of the first switch unit is greater than the conduction time of the third switch unit, Alternatively, when the electronic atomization device is in the puffing state, the conduction time of the first switch unit is greater than the working time of the current source.

The eleventh aspect of the embodiment of the present application provides an indication component of an electronic atomization device, including

The above system control circuit;

An indicator light, which is electrically connected to the second end of the second one-way conductive element;

A first capacitor, the first end of which is electrically connected to the second end of the second unidirectional conduction element, and the second end of which is electrically connected to the atomization end;

Optionally, the power supply is a battery core, and the power supply voltage range provided by the battery core includes 1.5V-3.6V;

The twelfth aspect of the embodiment of the present application provides an electronic atomization device, which is characterized in that it includes:

The above-mentioned system control circuit or the above-mentioned indicating component;

A heating element, the first end of which is electrically connected to the atomization end, and the second end of which is electrically connected to the ground end of the power supply;

a containing device which is hollow for containing liquid;

Wherein, the heating element is in contact with the liquid in the containing device, and when the heating control unit controls the first switch unit to be turned on, the heating element generates heat to atomize the liquid.

The system control circuit of the embodiment of the present application includes a first switch unit, the first end of which is electrically connected to the power supply end, the second end of which is electrically connected to the atomization end, and the control end of which is electrically connected to the heating control unit. Connection; the second one-way conductive element has a first end electrically connected to the power supply terminal, and a second end used to be electrically connected to the first end of the first capacitor and the indicator light; wherein, the first switch unit The first switch unit is turned off and the second one-way conductive element is turned on to charge the first capacitor. The first switch unit is turned on and the second one-way conductive element is turned off to charge the first end of the first capacitor. The potential is raised and used to drive the indicator light. Therefore, the first end of the first capacitor has a higher voltage after being raised, and can be used to drive the indicator light relatively stably; moreover, the second end of the first capacitor is electrically connected to the atomization end, and the system control circuit does not need to be separately added with The second end of the first capacitor is connected to a terminal, so that the number of terminals can be reduced, which is beneficial to reducing costs. Moreover, in this embodiment, the first switch unit is shared, and there is no need to add an additional switch unit for boosting, which is beneficial to further reducing costs.

The thirteenth aspect of the embodiment of the present application provides a system control circuit for driving an indicator light, including:

The first MOS tube has its first end electrically connected to the power supply end or the power supply ground end, and its second end is used to be connected in series with the indicator light;

A voltage judgment unit, which is electrically connected to the first end and the second end of the first MOS transistor for obtaining the voltage of the first end and the voltage of the second end. When the first MOS transistor is turned on, the voltage judgment unit Used to determine whether the voltage difference between the first terminal and the second terminal is greater than or equal to the first reference voltage. When the voltage determination unit determines that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first A mode, when the voltage judgment unit judges that the voltage difference is less than the first reference voltage, the system control circuit operates in the second mode;

Optionally, the voltage judgment unit includes a voltage comparison unit, the first input end of the voltage comparison unit is electrically connected to the first end of the first MOS transistor, and the second input end of the voltage comparison unit is electrically connected to the first MOS transistor. The second end of the tube is electrically connected, and the voltage comparison unit obtains the voltage at both ends of the first MOS tube through the first input terminal and the second input terminal. When the voltage difference is greater than or equal to the first reference voltage, the The voltage comparison unit outputs a first signal to cause the system control circuit to operate in a first mode. When the voltage difference is less than the first reference voltage, the voltage comparison unit outputs a second signal to cause the system control circuit to operate. in second mode.

Optionally, the voltage judgment unit further includes a flip-flop, the flip-flop is electrically connected to the output end of the voltage comparison unit, and when the flip-flop receives the second signal, the flip-flop outputs a second driving signal. , so that the system circuit operates in the second mode.

Optionally, when the flip-flop receives that the signal of the voltage comparison unit changes from the second signal to the first signal, the flip-flop continues to output the second driving signal, so that the system circuit continues to work in the first Two modes.

Optionally, the system control circuit includes a light control unit and a trigger. The light control unit is used to control whether the indicator light emits light. The trigger is connected to the output end of the voltage comparison unit and the light control unit respectively. Electrical connection, when the light control unit is used to control the indicator light to go out, the light control unit outputs an extinguishing signal to the trigger. After receiving the extinguishing signal, the trigger transmits a first driving signal to make the system circuit work. In first mode.

Optionally, the system control circuit includes a light control unit and a trigger. The light control unit is used to control whether the indicator light emits light. The trigger is connected to the output end of the voltage comparison unit and the light control unit respectively. Electrically connected, the light control unit is also used to control whether the first MOS tube is turned on. When the light control unit controls the first MOS tube to be turned on and the voltage difference is greater than or equal to the first reference voltage, the The voltage comparison unit outputs a first signal. After the flip-flop receives the first signal, the flip-flop outputs a first driving signal so that the system circuit operates in the first mode.

Optionally, when the light control unit controls the first MOS transistor to turn on, and when the voltage difference changes from greater than or equal to the first reference voltage to less than the first reference voltage, the voltage comparison unit outputs second signal, the flip-flop After receiving the second signal, a second driving signal is output, so that the system circuit operates in the second mode.

Optionally, the system control circuit includes a current source and a light control unit. The light control unit is used to control whether the indicator light emits light. The current source includes the first MOS tube. The light control unit controls Whether the current source is working; or,

The system control circuit includes a light control unit, which is used to control whether the indicator light emits light. The first MOS tube is a switching tube, and the control end of the first MOS tube is connected to the light control unit. Electrical connection.

Optionally, the system control circuit includes:

The first power supply unit has a first end that is electrically connected to the power supply end, and a second end that is used to electrically connect with the indicator light or the first end of the first MOS tube. The first power supply unit is used to adjust the voltage of the power supply end. Driving indicator light;

The second power supply unit has a first end that is electrically connected to the power supply end, and a second end that is used to electrically connect with the indicator light or the first end of the first MOS tube. The second power supply unit is used to adjust the voltage of the power supply end. Boost;

Optionally, the second power supply unit includes the first power supply unit;

The system control circuit also includes a first driving unit, a second driving unit, a third switching unit, a third driving unit, and a logic control unit;

The first power supply unit includes a first switch unit, the control end of the first switch unit is electrically connected to the first driving unit, the first end of the first switch unit is electrically connected to the power supply end, and the second end of the first switch unit is used to connect to the first drive unit. The first end of a capacitor is electrically connected, and its second end is also used to be electrically connected to the first end of the first MOS tube or the indicator light;

The second power supply unit includes a second switch unit, the control end of which is electrically connected to the second drive unit, the first end of which is electrically connected to the power supply end, and the second end of which is used to connect to the third capacitor of the first capacitor. Two ends are electrically connected, and the second end is electrically connected to the ground end of the power supply via a third switch unit;

The first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, a first PMOS tube, and a second PMOS tube, wherein the input of the inverter The terminal is electrically connected to the control terminal of the second switch unit or the logic control unit, the output terminal of the inverter is electrically connected to the control terminal of the first NMOS tube, and the source of the first NMOS tube It is electrically connected to the ground terminal of the power supply, its drain is electrically connected to the drain of the first PMOS tube and the control terminal of the second PMOS tube, and the control terminal of the first PMOS tube is electrically connected to the drain of the second NMOS tube, The source of the first PMOS tube is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, and the control terminal of the second NMOS is connected to the control terminal of the second switch unit or the other terminal. The logic control unit is electrically connected, the drain of the second NMOS transistor is also electrically connected to the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected to the second end of the first switch unit, and the second NMOS transistor The drain is also used to control whether the first switch unit is turned on;

The second switching unit includes a PMOS transistor, and the second driving unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is electrically connected to the power supply ground terminal, and the third NMOS The control end of the tube and the control end of the third PMOS tube are both electrically connected to the logic control unit. The drain of the third NMOS tube is electrically connected to the drain of the third PMOS tube. The third PMOS tube The source electrode is electrically connected to the power supply terminal, and the drain electrode of the third NMOS tube is also used to control whether the second switch unit is turned on;

The control end of the third switch unit is electrically connected to the third drive unit, its first end is electrically connected to the second end of the second switch unit, and its second end is electrically connected to the power ground end;

The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, and the fourth NMOS transistor The control end of the tube and the control end of the fourth PMOS tube are both electrically connected to the logic control unit, the drain of the fourth NMOS tube is electrically connected to the drain of the fourth PMOS tube, and the source of the fourth PMOS tube The pole is electrically connected to the power supply terminal, and the drain of the fourth NMOS tube is also used to control whether the third switch unit is turned on;

The logic control unit is also electrically connected to the voltage judgment unit;

Wherein, in the first mode, the logic control unit controls the first switch unit, the third switch unit is always on and the second switch unit is always off. In the second mode, during the first time period, the logic control unit controls The first switching unit and the third switching unit are turned on and the second switching unit is turned off to charge the first capacitor. In the second time period, the logic control The unit controls the second switch unit to be turned on and the first switch unit and the third switch unit to be turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light.

Optionally, the logic control unit further includes a first logic gate and a second logic gate, wherein the first input terminal of the first logic gate is connected to a clock signal, and the third input terminal of the first logic gate is connected to the clock signal of the third switching unit. The control terminal is electrically connected, its fourth input terminal is electrically connected to the output terminal of the voltage judgment unit, and its output terminal is electrically connected to the second driving unit; the first input terminal of the second logic gate is electrically connected to the second switching unit's The control terminal is electrically connected, its second input terminal is connected to the clock signal, and its output terminal is electrically connected to the third driving unit.

Optionally, the system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The light control unit is electrically connected to the second input end of the first logic gate to Prevent the indicator light from being boosted when it does not need to be lit;

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate.

Optionally, the system control circuit further includes a switch control unit, the switch control unit is electrically connected to the voltage judgment unit, and the switch control unit is electrically connected to the power supply end and the power ground end respectively;

The first power supply unit includes a fifth switch unit. The control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply end. The second end of the fifth switch unit is used to connect to the indicator light. Or the first end of the first MOS tube is electrically connected;

The second power supply unit includes a first boost unit. The first end of the first boost unit is electrically connected to the power supply terminal, and its second end is used to connect to the indicator light or the first MOS tube. The first end is electrically connected, and the control end of the first boost unit is electrically connected to the switch control unit;

Optionally, the first boost unit includes a second switching unit and a first switching unit, wherein the first end of the second switching unit and the first end of the first switching unit are both connected to the power supply. The power supply end is electrically connected, the second end of the first switch unit is used to be electrically connected to the first end of the first capacitor, the control end of the first switch unit is electrically connected to the switch control unit, and the second end of the first switch unit is electrically connected to the first end of the first capacitor. The control end of the switch unit is electrically connected to the switch control unit, its second end is used to be electrically connected to the second end of the first capacitor, and its second end is also indirectly electrically connected to the ground end of the power supply; the system control The circuit also includes a third switch unit. The control end of the third switch unit is electrically connected to the switch control unit. The first end of the third switch unit is electrically connected to the second end of the first capacitor. The second end of the third switch unit is electrically connected to the second end of the first capacitor. The ground terminal of the power supply is electrically connected, wherein, in the second mode, during the first time period, the switch control unit controls the first switch unit and the third switch unit to be turned on and the second switch unit is turned off to provide power to the third switch unit. A capacitor is charged, and in the second time period, the switch control unit controls the second switch unit to be turned on and the first switch unit and the third switch unit to be turned off so that the potential of the first end of the first capacitor is raised, For driving the indicator light; or,

The first boost unit is a boost circuit.

Optionally, the system control circuit is located on the same chip; or,

The first end of the first MOS transistor is one of the source or the drain, and the second end of the first MOS transistor is the other one of the source or the drain; or,

The range of the first reference voltage is 80mV-150mV.

The fourteenth aspect of the embodiment of the present application provides an indication component, including

The above system control circuit;

An indicator light, which is connected in series with the first MOS tube of the system control circuit;

The power supply includes a battery core; or,

The fifteenth aspect of the embodiment of the present application provides an electronic atomization device, including:

The system control circuit of the embodiment of the present application includes a voltage judgment unit. The voltage judgment unit is used to judge whether the voltage difference between the first terminal and the second terminal is greater than or equal to the first reference voltage. When the voltage judgment unit determines that the voltage difference is greater than or equal to The system control circuit operates in the first mode when it is equal to the first reference voltage, and the system control circuit operates in the second mode when the voltage judgment unit determines that the voltage difference is less than the first reference voltage; wherein In the first mode, the voltage at the power supply terminal is directly used to drive the indicator light, which is beneficial to improving the energy utilization rate of the power supply. In the second mode, the voltage at the power supply terminal is boosted and used to drive the indicator light, even if the power supply voltage If it is relatively low, the indicator light can be lit normally after boosting. The brightness is relatively bright, which is conducive to the normal use of the indicator light. Moreover, when the voltage difference is greater than or equal to the first reference voltage, the indicator light is directly driven without boosting, and the voltage is boosted only when the voltage difference is less than the first reference voltage, so that the switching elements in the system control circuit will not withstand high voltage. A large voltage is not easily damaged, and the peak voltage generated by the switching element in the system control circuit when turned off is not large, which will not damage the switching element, and the peak voltage will not damage the indicator light; and the system control circuit of this application It can adapt to power supplies of various specifications, improves versatility, and can enhance the market competitiveness of system control circuits.

The sixteenth aspect of the embodiment of the present application provides a system control circuit for driving an indicator light, including:

The light-emitting end is indirectly electrically connected to the power supply end, the light-emitting end is used to be electrically connected to the first end of the indicator light, and the power supply grounding end is used to be directly or indirectly electrically connected to the second end of the indicator light;

The voltage judgment unit is electrically connected to the light-emitting end, the power supply end or the line between the light-emitting end and the power supply end to form a first connection point. It is also connected to the power supply ground end or the second connection point between the power supply ground end and the indicator light. The lines between the terminals are electrically connected to form a second connection point for obtaining the voltage at the two connection points. The voltage judgment unit is used to judge whether the voltage difference at the two connection points is greater than or equal to the first reference voltage. , when the voltage judgment unit judges that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first mode, and when the voltage judgment unit judges that the voltage difference is less than the first reference voltage The system control circuit operates in the second mode;

Optionally, the system control circuit includes a first light-emitting end and a third light-emitting end. The light-emitting end is the first light-emitting end. The first light-emitting end is used to be electrically connected to the first end of the indicator light. The third light-emitting end is The light-emitting end is used to be electrically connected to the second end of the indicator light. The third light-emitting end is indirectly electrically connected to the power supply ground end. The voltage judgment unit is connected to the third light-emitting end, the power supply ground end or is located between the power supply ground end and the third power supply ground end. The lines between the light-emitting terminals are electrically connected to form the second connection point; or,

The system control circuit includes a third light-emitting end, which is a third light-emitting end. The third light-emitting end is used to be electrically connected to the first end of the indicator light. The power ground end is used to be connected to the second end of the indicator light. The voltage judgment unit is electrically connected to a third light-emitting end, a power supply end, or a line between the power supply end and the third light-emitting end to form the first connection point.

Optionally, the voltage judgment unit includes a voltage comparison unit, the first input end of the voltage comparison unit is electrically connected to the first connection point, and the second input end of the voltage comparison unit is electrically connected to the second connection point, The voltage comparison unit obtains the voltage of the first connection point through the first input terminal, and the voltage comparison unit obtains the voltage of the second connection point through the second input terminal. When the voltage difference is greater than or equal to the first reference voltage, When the voltage comparison unit outputs a first signal to make the system control circuit operate in the first mode, when the voltage difference is less than the first reference voltage, the voltage comparison unit outputs a second signal to make the system The control circuit operates in the second mode.

Optionally, the system control circuit includes a light control unit and a trigger. The light control unit is used to control whether the indicator light emits light. The trigger is connected to the output end of the voltage comparison unit and the light control unit respectively. Electrically connected, when the light control unit controls the indicator light to emit light and the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit outputs a first signal, and the trigger receives the first signal. The flip-flop outputs a first driving signal to cause the system circuit to operate in a first mode.

Optionally, when the light control unit controls the indicator light to light, and when the voltage difference changes from greater than or equal to the first reference voltage to less than the first reference voltage, the voltage comparison unit outputs a second signal, the flip-flop outputs a second driving signal after receiving the second signal, so that the system circuit operates in the second mode.

Optionally, the system control circuit includes:

A first power supply unit, a first end of which is electrically connected to the power supply end, and a second end of which is electrically connected to the light-emitting end, and the first power supply unit is used to drive the indicator light with the voltage of the power supply end;

a second power supply unit, a first end of which is electrically connected to the power supply end, and a second end of which is electrically connected to the light-emitting end; the second power supply unit is used to boost the voltage of the power supply end;

Optionally, the second power supply unit includes the first power supply unit;

The first power supply unit includes a first switch unit, the control end of the first switch unit is electrically connected to the first driving unit, the first end of the first switch unit is electrically connected to the power supply end, and the second end of the first switch unit is used to connect to the first drive unit. The first end of a capacitor is electrically connected, and its second end is also used to be electrically connected to the light-emitting end;

Wherein, in the first mode, the logic control unit controls the first switch unit, the third switch unit is always on and the second switch unit is always off. In the second mode, during the first time period, the logic control unit controls The first switch unit and the third switch unit are turned on and the second switch unit is turned off to charge the first capacitor. In the second time period, the logic control unit controls the second switch unit to be turned on and the first switch unit is turned off. The switching unit and the third switching unit are turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light.

The first power supply unit includes a fifth switch unit, a control end of the fifth switch unit is electrically connected to the switch control unit, a first end of the fifth switch unit is electrically connected to the power supply end, and a second end of the fifth switch unit is electrically connected to the light-emitting end. electrical connection;

The second power supply unit includes a first voltage boosting unit, a first end of the first voltage boosting unit is electrically connected to the power supply end, and a second end of the first voltage boosting unit is electrically connected to the light-emitting end. The control end of the pressure unit is electrically connected to the switch control unit;

The first boost unit is a boost circuit.

Optionally, the system control circuit is located on the same chip; or,

The range of the first reference voltage is 2.5V-3.5V.

The seventeenth aspect of the embodiment of the present application provides an indication component, including

The above system control circuit;

An indicator light, the first end of which is electrically connected to the light-emitting end, and the second end of which is directly or indirectly electrically connected to the grounding end of the power supply;

The indicating component also includes a first capacitor, the first end of the first capacitor and the indicator light are electrically connected to the light-emitting end, and the second end of the first capacitor is indirectly electrically connected to the power supply ground end; or,

The power supply includes a battery core; or,

The eighteenth aspect of the embodiment of the present application provides an electronic atomization device, including:

The system control circuit of the embodiment of the present application includes a voltage judgment unit. The voltage judgment unit is used to judge whether the voltage difference at two connection points is greater than or equal to the first reference voltage. When the voltage judgment unit determines that the voltage difference is greater than or equal to the first reference voltage, The system control circuit operates in the first mode when the reference voltage is used, and the system control circuit operates in the second mode when the voltage judgment unit determines that the voltage difference is less than the first reference voltage; wherein, in the first mode, The voltage at the power supply terminal is directly used to drive the indicator light, which is beneficial to improving the energy utilization rate of the power supply. In the second mode, the voltage at the power supply terminal is boosted and used to drive the indicator light. Even if the power supply voltage is relatively low, the voltage can be boosted. Then the indicator light lights up normally and the brightness is relatively bright, which is conducive to the normal use of the indicator light. Moreover, when the voltage difference is greater than or equal to the first reference voltage, the indicator light is directly driven without boosting, and the voltage is boosted only when the voltage difference is less than the first reference voltage, so that the switching elements in the system control circuit will not withstand high voltage. A large voltage is not easily damaged, and the peak voltage generated by the switching element in the system control circuit when turned off is not large, which will not damage the switching element, and the peak voltage will not damage the indicator light; and the system control circuit of this application It can adapt to power supplies of various specifications, improves versatility, and can enhance the market competitiveness of system control circuits.

The nineteenth aspect of the embodiment of the present application provides a system control circuit for driving an indicator light, including:

A detection resistor, the first end of which is electrically connected to the power supply end or the power supply ground end, and is connected in series with the indicator light;

A voltage judgment unit, which is electrically connected to the first end and the second end of the detection resistor for obtaining the voltage of the first end and the voltage of the second end. The voltage judgment unit is used to judge the voltage of the first end and the second end. Whether the voltage difference is greater than or equal to the first reference voltage, when the voltage judgment unit judges that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first mode, and when the voltage judgment unit judges that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first mode. When the voltage difference is less than the first reference voltage, the system control circuit operates in the second mode;

Optionally, the detection resistor is used between the power supply terminal and the indicator light; or,

The detection resistor is used between the ground terminal of the power supply and the indicator light; or,

The detection resistor is used between the ground terminal of the power supply and the negative pole of the power supply; or,

The detection resistor is used to be located between the power supply terminal and the positive electrode of the power supply.

Optionally, the voltage judgment unit includes a voltage comparison unit, the first input terminal of the voltage comparison unit is electrically connected to the first terminal of the detection resistor, and the second input terminal of the voltage comparison unit is connected to the second terminal of the detection resistor. Electrically connected, the voltage comparison unit obtains the voltage across the detection resistor through the first input terminal and the second input terminal. When the voltage difference is greater than or When the voltage difference is equal to the first reference voltage, the voltage comparison unit outputs a first signal to cause the system control circuit to operate in the first mode. When the voltage difference is less than the first reference voltage, the voltage comparison unit outputs a first signal. The second signal causes the system control circuit to operate in the second mode.

Optionally, when the light control unit controls the indicator light to light and the voltage difference changes from greater than or equal to the first reference voltage to less than the first reference voltage, the voltage comparison unit outputs a second signal, the flip-flop outputs a second driving signal after receiving the second signal, so that the system circuit operates in the second mode.

Optionally, the system control circuit includes:

Optionally, the second power supply unit includes the first power supply unit;

The first power supply unit includes a first switch unit, the control end of the first switch unit is electrically connected to the first driving unit, the first end of the first switch unit is electrically connected to the power supply end, and the second end of the first switch unit is used to connect to the first drive unit. The first end of a capacitor is electrically connected, and its second end is also used to be electrically connected to the indicator light;

The second switching unit includes a PMOS transistor, and the second driving unit includes a third NMOS transistor and a third PMOS transistor. tube, wherein the source of the third NMOS tube is electrically connected to the power supply ground terminal, the control terminal of the third NMOS tube and the control terminal of the third PMOS tube are both electrically connected to the logic control unit, so The drain of the third NMOS transistor is electrically connected to the drain of the third PMOS transistor, the source of the third PMOS transistor is electrically connected to the power supply terminal, and the drain of the third NMOS transistor is also used to control the Whether the second switch unit is turned on;

The first power supply unit includes a fifth switch unit, a control end of the fifth switch unit is electrically connected to the switch control unit, a first end of the fifth switch unit is electrically connected to the power supply end, and a second end of the fifth switch unit is electrically connected to the indicator light. electrical connection;

The second power supply unit includes a first voltage boosting unit, a first end of the first voltage boosting unit is electrically connected to the power supply end, and a second end of the first voltage boosting unit is electrically connected to the indicator light. The control end of the pressure unit is electrically connected to the switch control unit;

The first boost unit is a boost circuit.

Optionally, the system control circuit is located on the same chip or the system circuit except the detection resistor is located on the same chip; or,

The range of the first reference voltage is 80mV-150mV.

The twentieth aspect of the embodiment of the present application provides an indication component, including

The above system control circuit;

An indicator light is connected in series with the detection resistor;

The indication component further includes a first capacitor, a first end of the first capacitor is electrically connected to the indicator light, and a second end of the first capacitor is indirectly electrically connected to the power supply ground end; or,

The power supply includes a battery core; or,

A twenty-first aspect of the embodiment of the present application provides an electronic atomization device, including:

The system control circuit of the embodiment of the present application includes a voltage judgment unit. The voltage judgment unit is used to judge whether the voltage difference on the detection resistor is greater than or equal to the first reference voltage. When the voltage judgment unit determines that the voltage difference is greater than or equal to the first reference voltage, the system The control circuit operates in the first mode. When the voltage judgment unit determines that the voltage difference is less than the first reference voltage, the system control circuit operates in the second mode; wherein in the first mode, the voltage of the power supply terminal is directly used. For driving the indicator light, it is helpful to improve the energy utilization rate of the power supply. In the second mode, the voltage at the power supply terminal is boosted and used to drive the indicator light. Even if the power supply voltage is relatively low, the indicator light can be lit normally after the voltage is boosted. , the brightness is relatively bright, which is conducive to the normal use of the indicator light. Moreover, when the voltage difference is greater than or equal to the first reference voltage, the indicator light is directly driven without boosting, and the voltage is boosted only when the voltage difference is less than the first reference voltage, so that the switching elements in the system control circuit will not withstand high voltage. A large voltage is not easily damaged, and the peak voltage generated by the switching element in the system control circuit when turned off is not large, which will not damage the switching element, and the peak voltage will not damage the indicator light; and the system control circuit of this application It can adapt to power supplies of various specifications, improves versatility, and can enhance the market competitiveness of system control circuits.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the implementation. Obviously, the drawings in the following description are some implementations of the present application. For ordinary people in the art For technical personnel, other drawings can also be obtained based on these drawings without exerting creative work.

Figure 1 is a circuit module diagram of the electronic atomization device according to the first embodiment of the present application;

Figure 2 is a circuit module diagram of the system control circuit of the first embodiment of the present application;

Figure 3 is a specific circuit diagram of the system control circuit of the first embodiment of the present application;

Figure 4 is a circuit module diagram of an electronic atomization device according to another embodiment of the present application;

Figure 5 is a specific circuit diagram of the system control circuit of Figure 4;

Figure 6 is a specific circuit diagram of the system control circuit according to another embodiment of the present application;

Figure 7 is a circuit module diagram of the system control circuit of the second embodiment of the present application;

Figure 8 is a specific circuit diagram of the power supply judgment unit of the second embodiment of the present application;

Figure 9 is a specific circuit diagram of the system control circuit of the second embodiment of the present application;

Figure 10 is a circuit module diagram of the system control circuit of the third embodiment of the present application;

Figure 11 is a specific circuit diagram of the voltage-reducing unit according to the third embodiment of the present application;

Figure 12 is a specific circuit diagram of the system control circuit of the third embodiment of the present application;

Figure 13 is a circuit module diagram of the electronic atomization device according to the fourth embodiment of the present application;

Figure 14 is a partial detailed circuit diagram of the indicating component according to the fourth embodiment of the present application;

Figure 15 is a circuit module diagram of an electronic atomization device according to another embodiment of the present application;

Figure 16 is a partial detailed circuit diagram of the indicating component of Figure 15;

Figure 17 is a partial detailed circuit diagram of the indicating component according to the fifth embodiment of the present application;

Figure 18 is a circuit module diagram of the system control circuit of the sixth embodiment of the present application;

Figure 19 is a specific circuit diagram of the system control circuit of the sixth embodiment of the present application;

Figure 20 is another specific circuit diagram of the system control circuit of the sixth embodiment of the present application;

Figure 21 is a specific circuit diagram of the system control circuit of another embodiment of the present application;

Figure 22 is a circuit module diagram of the system control circuit of the seventh embodiment of the present application;

Figure 23 is a specific circuit diagram of the system control circuit of the seventh embodiment of the present application;

Figure 24 is a circuit connection diagram of the current source and the light control unit according to the seventh embodiment of the present application;

Figure 25 is a specific circuit diagram of the system control circuit of another embodiment of the present application;

Figure 26 is a circuit module diagram of the system control circuit of the eighth embodiment of the present application;

Figure 27 is a specific circuit diagram of the system control circuit of the eighth embodiment of the present application;

Figure 28 is a circuit module diagram of an electronic atomization device according to another embodiment of the present application;

Figure 29 is a specific circuit diagram of the system control circuit of Figure 28;

Figure 30 is a specific circuit diagram of the system control circuit of another embodiment of the present application;

Figure 31 is a circuit module diagram of the system control circuit of the ninth embodiment of the present application;

Figure 32 is a specific circuit diagram of the system control circuit of the ninth embodiment of the present application;

Figure 33 is a specific circuit diagram of the system control circuit of another embodiment of the present application;

Figure 34 is a circuit module diagram of a system control circuit according to another embodiment of the present application;

Figure 35 is a specific circuit diagram of the system control circuit of another embodiment of the present application;

Figure 36 is a specific circuit diagram of the system control circuit according to yet another embodiment of the present application;

Figure 37 is a circuit module diagram of the system control circuit of the eleventh embodiment of the present application;

Figure 38 is a specific circuit diagram of the system control circuit of the eleventh embodiment of the present application;

Figure 39 is a specific circuit diagram of the system control circuit of another embodiment of the present application;

Figure 40 is a circuit module diagram of a system control circuit according to another embodiment of the present application;

Figure 41 is a specific circuit diagram of the system control circuit of another embodiment of the present application;

Figure 42 is a specific circuit diagram of a system control circuit according to yet another embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Where the terms "include" and "have" and any variations thereof appear in the specification, claims and drawings of this application, they are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes Other steps or units inherent to such processes, methods, products or devices. In addition, the terms "first", "second" and "third" are used to distinguish different objects and are not used to describe a specific order. The electrical connection in this application includes direct electrical connection and indirect electrical connection. Indirect electrical connection means that there may be other electronic components, pins, etc. between the two electrically connected components. The XX terminal mentioned in this application may be an actual terminal, or it may not be an actual terminal, for example, it is only one end of a component or one end of a wire. This application mentions and/or includes three situations, such as A and/or B, including A, B, A and B.

First embodiment

An embodiment of the present application provides an electronic atomization device. The electronic atomization device is, for example, an electronic cigarette. Please refer to Figure 1. The electronic atomization device includes an indicating component, a heating wire 130, and an airflow sensor 140. The indicating component includes a power supply 110 and an indicator light. 120. System control circuit 200, first capacitor C1. Among them, the system control circuit 200 is electrically connected to the power supply 110, the indicating component, the heating wire 130, the air flow sensor 140, etc. respectively. In this embodiment, the power supply 110 includes a battery cell, and the power supply 110 is a low-voltage power supply 110. The power supply voltage it provides ranges from 1.5V to 3.6V. For example, the power supply voltage it provides ranges from 1.5V to 3.6V and 1.6V. -3.6V, 1.5V-3.4V, 1.8V-3.5V, 2.1V-3.6V, etc., the nominal voltage is lower than or equal to 3V, the nominal voltage is generally 2.5V-2.9V, such as 2.7V, 2.8 V. The indicator light 120 is, for example, an LED light. The LED light is, for example, a white LED light and/or a blue LED light. The forward voltage range of these LED lights is generally 2.5V-3.6V, such as 3V. The voltage for driving the LED light is only Only when the forward voltage is greater than the forward voltage can the LED light be lit. The airflow sensor 140 is, for example, a MEMS sensor or a microphone.

Please refer to FIGS. 1 and 2 in conjunction. In this embodiment, the system control circuit 200 includes a power supply terminal BAT, a power ground terminal GND, a switch control unit, a first switch unit K1 and a second switch unit K2.

In this embodiment, the power supply terminal BAT is electrically connected to the positive electrode of the power supply 110, the power supply ground terminal GND is electrically connected to the negative electrode of the power supply 110, and the switch control unit is electrically connected to the power supply terminal BAT and the power supply ground terminal GND respectively.

In this embodiment, the first end of the first switch unit K1 is electrically connected to the power supply terminal BAT for electrical connection with the positive electrode of the power supply 110 , and the second end of the first switch unit K1 is used for electrical connection with the indicator light 120 connection, here the second end of the first switch unit K1 can be directly electrically connected to the first end of the indicator light 120. There can also be other components between the indicator light 120 and the first switch unit K1, such as a current limiting resistor, other Switch unit, constant current source, etc., the control end of the first switch unit K1 is electrically connected to the switch control unit, and the switch control unit controls the on or off of the first switch unit K1.

In this embodiment, the second end of the first switch unit K1 is also electrically connected to the first end of the first capacitor C1, so that the first end of the first capacitor C1 is electrically connected to the indicator light 120 for driving the indicator light 120. , the second terminal of the first capacitor C1 is indirectly electrically connected to the power supply ground terminal GND. Specifically, the second end of the first capacitor C1 is electrically connected to the power supply ground terminal GND via a charging element, such as the third switch unit K3, a resistor, and the like. In this embodiment, the first switch unit K1 and the second switch unit K2 form a first boost unit. The output end of the first boost unit is electrically connected to the indicator light 120. The first boost unit can make the output voltage be 2 times the voltage of the power supply terminal BAT. Of course, in other embodiments of the present application, the first boost unit can make the output voltage be other multiples of the voltage of the power supply terminal BAT, such as 1.5 times, 3 times, 4 times, etc.

In this embodiment, during the first time period, the switch control unit controls the first switch unit K1 to turn on and the second switch unit K2 to turn off. At this time, the power supply 110 supplies power to the first capacitor C1 through the power supply terminal BAT and the first switch unit K1. Charging, since the conduction voltage drop (less than 0.1V) of the first switching unit K1 is negligible, the voltage on the first capacitor C1 is charged to the same voltage as the power supply 110, assuming that the voltage of the power supply 110 is Vbat, in the second time period The switch control unit controls the second switch unit K2 to be turned on and the first switch unit K1 to be turned off. Since the turn-on voltage drop (less than 0.1V) of the second switch unit K2 is negligible, the voltage drop at the second end of the second switch unit K2 is negligible. The voltage is the voltage of the power supply 110, which is also Vbat, that is, the voltage at the second end of the first capacitor C1 is Vbat. Since the voltage on the first capacitor C1 cannot change suddenly, the potential at the first end of the first capacitor C1 is raised to Vbat. +Vbat is 2Vbat, which is twice the voltage of the power supply 110. Therefore, even if the power supply 110 is a low-voltage power supply, the voltage working range of the low-voltage power supply 110 is 1.5V-3.6V, and the voltage range of twice Vbat is 3V-7.2V. Even if the low-voltage power supply 110 works at the lowest value of the voltage operating range, 1.5V, twice the Vbat is 3V, which is greater than or equal to the minimum forward conduction voltage of the indicator light 120, so the indicator light 120 can be driven by the low-voltage power supply 110 normally, indicating The lamp 120 can operate normally within the entire operating range of the low voltage power supply 110 . Moreover, in this embodiment, the charging of the first capacitor C1 is controlled by the first switch unit K1. Since the conduction voltage drop of the first switch unit K1 is almost negligible, the conduction voltage drop of the diode cannot be ignored (generally 0.7V), for example, when the low-voltage power supply 110 is 1.6V, the voltage on the first capacitor C1 is charged to 0.9V, so when the second switch unit K2 is turned on, the voltage on the first terminal of the first capacitor C1 is 1.6+0.9V, is 2.5V, and cannot drive the indicator light 120 to emit light normally. Even if the voltage of the low-voltage power supply 110 further rises, the indicator light 120 cannot emit light or the illumination brightness is dim, which worsens the user experience. Therefore, this embodiment is extremely The voltage range in which the low-voltage power supply 110 can drive the indicator light 120 is greatly improved. The indicator light 120 can work normally within the entire working range of the low-voltage power supply 110, and the brightness of the driving indicator light 120 is brighter, and the user experience is better; Yes, in this embodiment, the first switch unit K1 is used to control whether to charge the first capacitor C1 and whether to boost the voltage to drive the indicator light 120. The first switch unit K1 is a controllable element and is convenient for control.

In order to reduce energy consumption, in this embodiment, the charging element is the third switch unit K3. When the voltage needs to be boosted, the third switch unit K3 and the first switch unit K1 are turned on at the same time and turned off at the same time. In other scenarios, the third switch unit K3 is turned off. Whether the switch unit K3 and the first switch unit K1 are turned on may be asynchronous. The control end of the third switch unit K3 is electrically connected to the switch control unit. The first end of the third switch unit K3 is electrically connected to the second end of the first capacitor C1 and the second end of the second switch unit K2. The third switch unit K3 The second terminal of K3 is electrically connected to the power supply terminal BAT. In this embodiment, when the first switch unit K1 and the third switch unit K3 are turned off, the second switch unit K2 is turned on. At this time, the branch where the third switch unit K3 is located does not need to consume energy, which is beneficial to Energy saving. In addition, in other embodiments of the present application, the charging element can also be a resistor. Compared with the solution of the third switch unit K3, the branch where the resistor is located needs to consume energy when the second switch unit K2 is turned on, which is not conducive to saving. energy.

In this embodiment, the first switch unit K1 is a PMOS transistor, the second switch unit K2 is a PMOS transistor, and the third switch unit K3 is an NMOS transistor. However, the present application is not limited to this. In other embodiments of the present application, the first switch unit K1 may also be an NMOS transistor, the second switch unit K2 may be an NMOS transistor, and the third switch unit K3 may be a PMOS transistor. In addition, in other embodiments of the present application, the switch types of the first switch unit K1, the second switch unit K2, and the third switch unit K3 may be the same or different. In addition, in other embodiments of the present application, the first switch unit K1, the second switch unit K2, and the third switch unit K3 may also be other field effect transistors.

In order to drive the first switch unit K1, in this embodiment, the switch control unit includes a first drive unit 210 and a logic control unit 240. The output end of the first drive unit 210 is electrically connected to the control end of the first switch unit K1. The input terminal of a driving unit 210 is electrically connected to the logic control unit 240, the control terminal of the second switching unit K2 or the control terminal of the third switching unit K3. In this embodiment, the input terminal of the first driving unit 210 is connected to the second switching unit K3. The electrical connection of the control terminal of the switch unit K2 is taken as an example for explanation.

Specifically, please refer to Fig. 1, Fig. 2 and Fig. 3. The first driving unit 210 includes an inverter (the inverter is also called a NOT gate) 211, a first NMOS transistor NM1, a second NMOS transistor NM2, a first PMOS transistor PM1 and second PMOS transistor PM2, wherein the input end of the inverter 211 is electrically connected to the control end of the second switching unit K2, and the output end of the inverter 211 is electrically connected to the control end of the first NMOS transistor NM1, The source of the first NMOS transistor NM1 is electrically connected to the power ground terminal GND. The drain of the first NMOS transistor NM1 is electrically connected to the drain of the first PMOS transistor PM1 and the control end of the second PMOS transistor PM2 respectively. The first PMOS transistor The control terminal of PM1 is electrically connected to the drain of the second NMOS transistor NM2, the source of the first PMOS transistor PM1 is electrically connected to the first terminal of the first capacitor C1, and the source of the second NMOS is electrically connected to the power ground terminal GND. The control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit K2, the drain of the second NMOS transistor NM2 is also electrically connected to the drain of the second PMOS transistor PM2, and the source of the second PMOS transistor PM2 is electrically connected to the first The first end of the capacitor C1 is electrically connected, and the drain of the second NMOS transistor NM2 is also used to control whether the first switch unit K1 is turned on. In this embodiment, the drain of the second NMOS transistor NM2 is directly electrically connected to the control terminal of the first switch unit K1, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the second Multiple inverters 211 can also be provided between the drain of the NMOS tube NM2 and the control terminal of the first switching unit K1, for example, 2, 4, or 6 inverters 211. The inverters 211 are, for example, made of CMOS tubes. constitute. In addition, in other embodiments of the present application, when the first switch unit K1 is an NMOS tube, the first drive unit 210 also includes a second boost circuit, and the second boost circuit is used to drive the first switch unit K1 is turned on, the boosted voltage of the second boost circuit is greater than the voltage of the power supply 110; the second boost circuit can be a conventional boost circuit in the field, such as a boost circuit, a charge pump, etc., which will not be described again here.

In order to drive the second switching unit K2 and the third switching unit K3, in this embodiment, please continue to refer to FIG. 1, FIG. 2 and FIG. 3. The switch control unit includes a second driving unit 220 and a third driving unit 230. The second driving unit 220 is electrically connected to the control terminal of the second switch unit K2, and the third driving unit 230 is electrically connected to the control terminal of the third switch unit K3.

Specifically, the second driving unit 220 includes a third NMOS transistor NM3 and a third PMOS transistor PM3, wherein the source of the third NMOS transistor NM3 is electrically connected to the power ground terminal GND, and the control end of the third NMOS transistor NM3 is connected to the logic control The unit 240 is electrically connected, the drain of the third NMOS transistor NM3 is electrically connected to the drain of the third PMOS transistor PM3, the control end of the third PMOS transistor PM3 is electrically connected to the logic control unit 240, and the source of the third PMOS transistor PM3 is electrically connected to The power supply terminal BAT is electrically connected, and the drain of the third NMOS transistor NM3 is also used to control whether the second switch unit K2 is turned on. In this embodiment, the drain of the third NMOS transistor NM3 is directly electrically connected to the control terminal of the second switch unit K2, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the third The drain of NMOS transistor NM3 and the second switching unit Multiple inverters 211 may also be provided between the control terminals of K2, for example, 2, 4, or 6 inverters 211 may be provided.

In this embodiment, the third driving unit 230 includes a fourth NMOS transistor NM4 and a fourth PMOS transistor PM4, wherein the source of the fourth NMOS transistor NM4 is electrically connected to the power ground terminal GND, and the control terminal of the fourth NMOS transistor NM4 The drain of the fourth NMOS transistor NM4 is electrically connected to the drain of the fourth PMOS transistor PM4. The control end of the fourth PMOS transistor PM4 is electrically connected to the logic control unit 240. The drain of the fourth PMOS transistor PM4 is electrically connected to the logic control unit 240. The source is electrically connected to the power supply terminal BAT, and the drain of the fourth NMOS transistor NM4 is used to control whether the third switch unit K3 is turned on. In this embodiment, the drain of the fourth NMOS transistor NM4 is directly electrically connected to the control terminal of the third switch unit K3, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the fourth Multiple inverters 211 may also be provided between the drain of the NMOS transistor NM4 and the control terminal of the third switching unit K3, for example, 2, 4, or 6 inverters 211 may be provided.

In this embodiment, the logic control unit 240 includes a first logic gate 241 and a second logic gate 242 . The first logic gate 241 has a first input terminal, a second input terminal, and a third input terminal. The first input terminal of the first logic gate 241 is connected to the clock signal CLK, and the second input terminal of the first logic gate 241 is connected to the clock signal CLK. Enable signal, the third input terminal of the first logic gate 241 is electrically connected to the control terminal of the third switch unit K3. The second logic gate 242 has a first input terminal and a second input terminal. The first input terminal of the second logic gate 242 is electrically connected to the control terminal of the second switch unit K2. The second input terminal of the second logic gate 242 is connected to Clock signal CLK. In this embodiment, the first logic gate 241 is a NOR gate, and the second logic gate 242 is a NAND gate. In this embodiment, when the enable signal is high level, the first switch unit K1 is normally on and the second switch unit K2 is normally off. At this time, the indicator light 120 will not be lit. When the enable signal and the third input terminal are all low level, at this time, the first switch unit K1, the third switch unit K3, and the second switch unit K2 are controlled by the clock signal CLK. Moreover, since the third input terminal of the first logic gate 241 is electrically connected to the control terminal of the third switch unit K3, the first input terminal of the second logic gate 242 is electrically connected to the control terminal of the second switch unit K2, so that the second The switch unit K2 and the third switch unit K3 will not be turned on at the same time. One of them will be turned on, and the other will be turned off. In addition, in other embodiments of the present application, the first logic gate 241 can also be other logic gate circuits, which can realize the effect of a NOR gate, and the second logic gate 242 can also be other logic gate circuits, which can realize the NAND gate. Effect. In this embodiment, the clock signal CLK is a periodic pulse signal. One cycle of the clock signal CLK includes a first time period and a second time period. In the first time period, the clock signal is at a high level, and in the second time period, the clock signal CLK is at a high level. The clock signal is at a low level, and the frequency of the clock signal CLK is greater than or equal to 50Hz. The period of the clock signal CLK is also the charge and discharge period of the first capacitor C1. When the indicator light 120 needs to be lit, it is also the point of the indicator light 120. The bright cycle, setting such a high frequency, can prevent human eyes from distinguishing the flashing of the indicator light 120 .

In this embodiment, the system control circuit also includes a clock signal generation unit and a light control unit 250. The light control unit 250 is used to control whether the indicator light 120 emits light. The clock signal generation unit is used to generate a clock signal. The operation of the clock signal generation unit is The energy end is electrically connected to the light control unit 250. When the light control unit 250 is used to control the indicator light 120 to light up, the light control unit 250 controls the clock signal generation unit to work to generate a clock signal. When the light control unit 250 is used to control the indicator light 120 The light-on control unit 250 controls the clock signal generation unit to stop working when it is turned off. This arrangement is beneficial to reducing the power consumption of the clock signal generation unit.

In order to effectively control whether the indicator light 120 is lit and prevent the indicator light 120 from being lit when it does not need to be lit, in this embodiment, please continue to refer to Figures 1-3, the system control circuit 200 also includes a fourth switch unit K4, the fourth switch unit K4 is connected in series with the indicator light 120. In this embodiment, the first end of the fourth switch unit K4 and the second end of the indicator light 120 are electrically connected through the current limiting resistor Rx. The second end is electrically connected to the power ground terminal GND, and the control end of the fourth switch unit K4 is electrically connected to the light control unit 250. The light control unit 250 is used to control whether the fourth switch unit K4 is turned on. Only when the fourth switch unit K4 The indicator light 120 can emit light when it is turned on, and the light control unit 250 will control the fourth switch unit K4 to turn on only when the indicator light 120 needs to be lit. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the indicator light 120 and the fourth switch unit K4 are located. In addition, in other embodiments of the present application, please refer to FIGS. 4 and 5 , the fourth switch unit K4 may also be located between the indicator light 120 and the second end of the first switch unit K1 . Specifically, the fourth switch unit K4 The first end of the unit K4 is electrically connected to the first end of the first switch unit K1. The second end of the fourth switch unit K4 is electrically connected to the first end of the indicator light 120 via the current limiting resistor Rx. The second end of the indicator light 120 The terminal is electrically connected to the power ground terminal GND, and the control terminal of the fourth switch unit K4 is electrically connected to the light control unit 250. Here, the fourth switch unit K4 is a PMOS tube. In addition, in other embodiments of the present application, the fourth opening can also be The off unit K4 is replaced with a current source. At this time, the current source and the indicator light 120 are connected in series. The control end of the current source is electrically connected to the light control unit 250. The light control unit 250 controls whether the current source works. The indicator light 120 only works when the current source works. to be lit. When the current source controlled by the light control unit 250 is not working, the indicator light 120 will not emit light. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the fourth switch unit K4 and the indicator light 120 are located.

Please continue to refer to FIG. 3. In this embodiment, the light control unit 250 is used to output an enable signal. That is, the light control unit 250 is electrically connected to the second input terminal of the first logic gate 241. When the indicator light 120 does not need to be lit, When it is on, the light control unit 250 controls the fourth switch unit K4 to turn off. At the same time, the light control unit 250 outputs a high-level enable signal. The first switch unit K1 is always on, and the second switch unit K2 is always off. , thus, the first capacitor C1 is charged. At this time, even if the fourth switch unit K4 mistakenly turns on the indicator light 120, it will not be lit, forming a double mechanism to prevent the indicator light 120 from being illuminated by mistake. When the indicator light 120 needs to be lit, the light control unit 250 controls the fourth switch unit K4 to be turned on, and at the same time, the light control unit 250 outputs a low-level enable signal, so that the charge and discharge of the first capacitor C1 is affected by the clock signal period. The indicator light 120 is periodically controlled so that the indicator light 120 turns on and off periodically. In this embodiment, the fourth switching unit K4 is a MOS tube, which can be an NMOS tube or a PMOS tube. In this embodiment, it is an NMOS tube. The first end of the fourth switching unit K4 is a drain. The second terminal is the source. In addition, in other embodiments of the present application, the fourth switch unit K4 may also be a triode, in which case the first terminal of the fourth switch unit K4 is the collector and the second terminal is the emitter. Moreover, in order to control the current flowing through the indicator light 120, a current limiting resistor Rx is connected in series on the branch where the fourth switch unit K4 and the indicator light 120 are located. The current limiting resistor Rx can be located between the fourth switch unit K4 and the indicator light 120. , the current limiting resistor Rx can also be located between the indicator light 120 and the first end of the first capacitor C1, and the current limiting resistor Rx can also be located between the fourth switch unit K4 and the power ground terminal GND.

In this embodiment, the system control circuit 200 also includes a status detection unit (not shown in the figure). The status detection unit is, for example, a smoking detection unit, a charging detection unit, and other units related to whether the indicator light 120 needs to be lit. When When the smoking detection unit is used, the smoking detection unit is electrically connected to the airflow sensor 140 such as a microphone or a MEMS sensor. The status detection unit is electrically connected to the light control unit 250. When the status detection unit detects that the user is smoking the electronic atomization device or the electronic atomization device is charging, the status detection unit outputs a signal to the light control unit 250, and the light control unit 250 outputs The signal is sent to the fourth switch unit K4 and the logic control unit 240 to control the indicator light 120 to light. That is, the light control unit 250 receives the output signal of the status detection unit to control whether the indicator light 120 is lit.

In this embodiment, please refer to Figures 1 to 3 in conjunction. The system control circuit 200 is located on the same chip. The power supply terminal BAT is the power supply pin BAT, and the power ground terminal GND is the power ground pin GND. The chip also It includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3, wherein the first light-emitting pin FG1 is used to electrically connect with the first end of the first capacitor C1 and the first end of the indicator light 120. connection, the second light-emitting pin FG2 is used to be electrically connected to the second end of the first capacitor C1, and the third light-emitting pin FG3 is used to be electrically connected to the second end of the indicator light 120 and the fourth switch unit K4. In this embodiment, the chip also includes an airflow detection pin SW and an atomization pin AT. The airflow detection pin SW is electrically connected to an airflow detection element. The airflow detection element is, for example, an airflow sensor 140. The airflow sensor 140 is, for example, a capacitive microphone. head, switch microphone, MEMS sensor, etc., the air flow detection pin SW is electrically connected to the status detection unit, through the status detection unit and the air flow sensor 140, it can be detected whether the electronic atomization device is smoked, the atomization pin AT is used to communicate with The heating wire 130 is electrically connected. In addition, in other embodiments of the present application, the first capacitor C1 can also be integrated on the chip, and in this case, there is no need to provide the second light-emitting pin FG2. In addition, in other embodiments of the present application, the chip can also integrate the airflow sensor 140 , that is, the airflow sensor 140 and the system control circuit 200 are located on the same chip. In addition, in other embodiments of the present application, please refer to Figures 4 and 5. The chip also includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3, where the first light-emitting pin The pin FG1 is used for electrical connection with the first terminal of the first capacitor C1 and the first terminal of the fourth switch unit K4, the second light-emitting pin FG2 is used for electrical connection with the second terminal of the first capacitor C1, and the third light-emitting pin The pin FG3 is used to be electrically connected to the second end of the fourth switch unit K4 and the first end of the indicator light 120. The second end of the indicator light 120 is electrically connected to the power ground pin GND.

In addition, in other embodiments of the present application, a voltage stabilizing capacitor can also be set between the first light-emitting pin FG1 and the power supply ground terminal GND. The voltage stabilizing capacitor is used to make the indicator light 120 emit light more stably when it is lit, and will not be ignored. Dark and bright.

In addition, in other embodiments of the present application, please refer to Figure 6. The switch control unit may not include the second drive unit and the third drive unit. The control end of the second switch unit and the control end of the third switch unit are both connected to Logic control unit electrical connection catch. Wherein, the logic control unit includes an OR gate 243, wherein the first input end of the OR gate 243 is connected to the clock signal CLK, the second input end of the OR gate 243 is connected to the enable signal, and the output end of the OR gate 243 is connected to the first The drive unit, the control terminal of the second switch unit K2, and the control terminal of the third switch unit K3 are electrically connected.

Generally speaking, since the voltage range of the low-voltage power supply 110 is relatively large, when the voltage of the low-voltage power supply 110 is relatively high, for example, when the voltage of the low-voltage power supply 110 is higher than 3V, after the first capacitor C1 is charged, the switch control unit controls the second switch When the unit K2 is turned on and the first switching unit K1 and the third switching unit K3 are turned off, the voltage at the second end of the first switching unit K1 is twice the voltage of the power supply 110 and is higher than 6V. When the switch control unit When controlling the first switch unit K1 to prepare to turn on, since the control terminal of the first switch unit K1 quickly drops to 0V, it takes a certain time for the first switch unit K1 to turn on, and due to the existence of the first capacitor C1, the first switch unit K1 It is not turned on yet, and at this time, the voltage between the control terminal and the second terminal of the first switch unit K1 is higher than 6V. Generally, in order to reduce costs, the first switch unit K1 is manufactured through a low-voltage process of less than or equal to 6V. The first switching element manufactured by the low-voltage process has a pressure-bearing capacity lower than 6V. When the voltage it withstands is higher than 6V, its reliability will decrease. Therefore, during the turn-on and conduction process of the first switch unit K1, if the voltage span ratio between the control terminal and the second terminal of the first switch unit K1 is greater than 6V, the first switch unit K1 may be damaged. In other embodiments of the present application, when the first switch unit K1 is an NMOS, the first switch unit K1 is generally connected to a voltage of 0V to turn off the first switch unit K1. After that, when the second end of the first switch unit K1 is raised to When the voltage of the power supply 110 is twice that of the power supply 110 , the voltage span between the control terminal of the first switch unit K1 and its second terminal is relatively large, which may also cause damage to the first switch unit K1 . Moreover, when the first switch unit K1 is turned off, a voltage spike will occur. If the voltage of the low-voltage power supply 110 is relatively high and is boosted by the first capacitor C1, the voltage spike will also be boosted, because the voltage of the power supply 110 is relatively high. , the voltage spike will be higher after boosting, and the voltage spike may exceed 9V, which may easily cause damage to the first switch unit K1 and the indicator light 120. In addition, when the voltage of the ordinary power supply 110 or the low-voltage power supply 110 is high, the voltage is still boosted at this time. The voltage boosting will reduce the efficiency and energy efficiency, and the voltage boosting is more likely to cause damage to the first switch unit K1 or damage to other components. In order to solve this problem, the present application provides a second embodiment and a third embodiment.

Second embodiment

Please refer to Figure 7. Figure 7 is a circuit module diagram of the system control circuit of the second embodiment of the present application. This embodiment is similar to the first embodiment, so the parts not described in this embodiment can refer to the first embodiment. This embodiment The main difference between this example and the first embodiment is that it also includes a power supply judgment unit.

Please refer to Figure 7. In this embodiment, the system control circuit 200 also includes a power supply judgment unit 360. The power supply judgment unit 360 is electrically connected to the power supply terminal BAT and the power supply ground terminal GND respectively to obtain a voltage representing the voltage of the power supply terminal BAT. Detection voltage, the power supply judgment unit 360 is used to determine whether the detection voltage is greater than the first reference voltage. The detection voltage can be equal to the voltage of the power supply terminal BAT, or can be proportional to the voltage of the power supply terminal BAT, that is, K*Vbat, where , K is a positive number less than 1. When the power supply determination unit 360 determines that the detection voltage is greater than the first reference voltage, the system control circuit 200 operates in the first mode. When the power supply determination unit 360 determines that the detection voltage is less than the first reference voltage, the system control circuit 200 operates in the second mode. In this embodiment, in the first mode, the voltage of the power supply terminal BAT is directly used to drive the indicator light 120. At this time, the voltage of the power supply terminal BAT is not boosted. In the second mode, the voltage of the power supply terminal BAT is boosted and then used. to drive the indicator light 120.

In this embodiment, please refer to FIGS. 7 to 9 . The power supply judgment unit 360 includes a voltage comparison unit 361 . The first input terminal of the voltage comparison unit 361 is connected to the first reference voltage. The second input terminal of the voltage comparison unit 361 is connected to the first reference voltage. The detection voltage is connected. The detection voltage is used to reflect the voltage of the power supply terminal BAT, that is, to reflect the voltage of the power supply 110. The enable end of the voltage comparison unit 361 is electrically connected to the light control unit 250, and the output of the voltage comparison unit 361 The terminal is electrically connected to the second input terminal of the first logic gate 241 , that is, the second input terminal of the first logic gate 241 is electrically connected to the light control unit 250 via the voltage comparison unit 361 . In this embodiment, when the indicator light 120 does not need to be lit, the light control unit 250 controls the voltage comparison unit 361 to stop working through the enable terminal; when the indicator light 120 needs to light, the light control unit 250 controls the voltage comparison unit 361 through the enable terminal. The voltage comparison unit 361 works normally.

In this embodiment, when the voltage comparison unit 361 operates normally, when the detected voltage is higher than the first reference voltage, the voltage comparison unit 361 outputs the first signal so that the system control circuit 200 operates in the first mode. At this time, the voltage The comparison unit 361 outputs a high level to the first logic gate 241, the first switch unit K1 is always on, and the second switch unit K2 is always off. At this time, the voltage of the power supply terminal BAT directly drives the indicator light 120. In this embodiment, the first switch unit K1 is included in the first power supply unit, and the first power supply unit is used to make the voltage of the power supply terminal BAT drive the indicator light. 120, no boosting. When the detected voltage is less than the first reference sub-voltage, the voltage comparison unit 361 outputs a second signal so that the system control circuit 200 operates in the second mode. At this time, the voltage comparison unit 361 outputs a low level to the first logic gate 241. The clock signal is high level in the first period. During this period, the clock signal controls the first switch unit K1 and the third switch unit K3 to be turned on, and the second switch unit K2 is turned off. The first capacitor C1 is charged. The clock signal is low level during the second period. During this period, the clock signal drives the first switch unit K1 and the third switch unit K3 to turn off, and the second switch unit K2 turns on. The first terminal of the first capacitor C1 The potential of is raised, the first capacitor C1 supplies power to the indicator light 120, and the indicator light 120 is lit. In this embodiment, the first switch unit K1 and the second switch unit K2 are included in the second power supply unit, and the second power supply unit It is used to boost the voltage of the power supply terminal BAT so that the boosted voltage drives the indicator light 120. In this embodiment, the second power supply unit includes the first power supply unit. In this embodiment, one cycle of the clock signal includes a first time period and a second time period. The clock signal is a periodic pulse signal. The indicator light 120 follows the clock signal to perform periodic brightening and darkening. Since the frequency of the clock signal is high, , so the human eye cannot distinguish the bright and dark flashing of the indicator light 120 . In this embodiment, the first signal is high level, and the second signal is low level. However, the present application is not limited to this. In other embodiments of the present application, the first signal is low level and the second signal is high level. The high level and the low level can be converted by adding an inverter 211 as needed. In this embodiment, darkening of the indicator light 120 may mean that the indicator light 120 is turned off, or it may mean that the brightness of the indicator light 120 is low, which is lower than the brightness of the indicator light 120 being on.

In this embodiment, the first input terminal of the voltage comparison unit 361 is the reverse terminal, and the second input terminal of the voltage comparison unit 361 is the non-directional terminal. However, the application is not limited thereto. In other embodiments of the application, The first input terminal may also be the non-inverting terminal of the voltage comparison unit 361 , and the second input terminal may be the inverse terminal of the voltage comparison unit 361 . In addition, in other embodiments of the present application, the second power supply unit may not include the first power supply unit. In this case, the first power supply unit includes a fifth switch unit, and the control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply terminal BAT, and the second end of the fifth switch unit is used to be electrically connected to the indicator light 120. The switch control unit includes a fifth drive unit, and the output end of the fifth drive unit is connected to the fifth drive unit. The control terminals of the five switch units are electrically connected, and the input terminal of the fifth drive unit is electrically connected to the logic control unit 240, the first drive unit 210, the second drive unit 220 or the third drive unit 230. The specific circuit of the fifth drive unit can be Referring to the first driving unit 210, which will not be described in detail here; the second power supply unit includes a first boost unit, the first end of the first boost unit is electrically connected to the power supply terminal BAT, and the second end of the first boost unit is used to connect to the indicator light. 120 is electrically connected, and the control end of the first boost unit is electrically connected to the switch control unit. The first boost unit includes a second switch unit K2 and a first switch unit K1, wherein the first end of the second switch unit K2 and the first switch unit K1 are electrically connected. The first end of the first switch unit K1 is electrically connected to the power supply terminal BAT. The second end of the first switch unit K1 is used to be electrically connected to the first end of the first capacitor C1 and the indicator light 120. The first end of the first switch unit K1 is electrically connected to the power supply terminal BAT. The control end is electrically connected to the switch control unit, the control end of the second switch unit K2 is electrically connected to the switch control unit, its second end is used to be electrically connected to the second end of the first capacitor C1, and its second end is also indirectly connected to the power supply. The ground terminal GND is electrically connected. In the second mode, in the first time period, the switch control unit controls the first switch unit K1 to turn on and the second switch unit K2 to turn off to charge the first capacitor C1, and in the second time period, the switch control unit controls the second switch unit K2 is turned on and the first switch unit K1 is turned off so that the potential of the first end of the first capacitor C1 is raised for driving the indicator light 120. In the second mode, the fifth switch unit remains normally turned off; in the first mode, the fifth switch unit K1 is turned off. The first switch unit K1 and the second switch unit K2 remain normally off, and the fifth switch unit remains normally on.

In this embodiment, the power supply judgment unit 360 also includes a first voltage dividing resistor Rf1 and a second voltage dividing resistor Rf2. The first end of the first voltage dividing resistor Rf1 is electrically connected to the power supply terminal BAT. The second end of the resistor Rf1 is electrically connected to the first end of the second voltage dividing resistor Rf2, the second end of the second voltage dividing resistor Rf2 is electrically connected to the power supply ground terminal GND, and the first end of the second voltage dividing resistor Rf2 is connected to the voltage The second input terminal of the comparison unit 361 is electrically connected for outputting the detection voltage. In this embodiment, the first voltage dividing resistor Rf1 and the second voltage dividing resistor Rf2 divide the voltage at the power supply terminal BAT, so that the detected voltage is equal to K*Vbat, K is a positive number less than 1, and its specific voltage The value is as follows:

Vs＝Vbat*Rfz2/(Rfz1+Rfz2)

Among them, Vs is the voltage value of the detection voltage, Vbat is the voltage at the power supply terminal BAT, Rfz1 is the resistance value of the first voltage dividing resistor Rf1, and Rfz2 is the resistance value of the second voltage dividing resistor Rf2.

In addition, in other embodiments of the present application, the detection voltage is directly the voltage of the power supply terminal BAT, that is, the voltage ratio The second input terminal of the comparison unit 361 is directly electrically connected to the power supply terminal BAT. At this time, the range of the first reference voltage is, for example, 2.8V-3.2V, such as 2.8V, 2.9V, 3V, 3.1V, 3.2V. Preferably 3V. In this embodiment, the detection voltage is not equal to the voltage of the power supply terminal BAT. The ratio of the detection voltage to the voltage of the power supply terminal BAT is Rfz2/(Rfz1+Rfz2). Therefore, the first reference voltage must also be reduced in the same proportion. , at this time, the range of the first reference voltage is, for example, 2.8*Rfz2/(Rfz1+Rfz2)V-3.2*Rfz2/(Rfz1+Rfz2)V, preferably 3*Rfz2/(Rfz1+Rfz2)V. For example, when the When the resistance value of the first voltage-dividing resistor Rf1 is equal to the resistance value of the second voltage-dividing resistor Rf2, the range of the first reference voltage at this time is, for example, 1.4V-1.6V, for example, 1.5V.

In this embodiment, the clock signal generating unit stops working in the first mode. This arrangement is beneficial to reducing the power consumption of the clock signal generating unit.

This embodiment adds a power supply judgment unit 360, which has the following advantages:

1. When the voltage of the power supply 110 is relatively large, the voltage of the power supply 110 is sufficient to drive the indicator light 120 and the brightness is relatively bright. At this time, the power supply judgment unit 360 determines that the detection voltage is greater than the first reference voltage, and the power supply judgment unit 360 controls the system control circuit. 200 works in the first mode. In the first mode, the indicator light 120 is directly driven by the voltage of the power supply terminal BAT without boosting the voltage, which is beneficial to improving the energy utilization rate of the power supply 110 . Moreover, when the voltage of the power supply 110 is relatively low, and the power supply judgment unit 360 judges that the detected voltage is less than the first reference voltage, the power supply judgment unit 360 controls the system control circuit 200 to work in the second mode, and the power supply terminal BAT in the second mode After the voltage is raised, it is used to drive the indicator light 120, so that even if the voltage of the power supply 110 is relatively low, the indicator light 120 can be normally lit after boosting, and the brightness is relatively bright, which is conducive to the normal use of the indicator light 120, and the indicator light 120 will not appear. The problem of getting darker and darker during use.

2. The power supply voltage range provided by the power supply of the electronic atomization device in this embodiment includes 1.5V-5V. For example, the power supply voltage range provided by the power supply is 1.5V-3.6V, 2.5V-4.2V or 3V-5V, that is, The power supply can use either a low-voltage power supply 110 or an ordinary power supply 110, that is, the power supplies 110 can be mixed, which facilitates the assembly of the electronic atomization device, and there is no need to set up corresponding system control circuits according to different power supplies 110. The system of this embodiment The control circuit is universal, which can improve the time competitiveness of the system control circuit. When the electronic atomization device uses the ordinary power supply 110 and the voltage is not too low, and the power supply judgment unit 360 judges that the detection voltage is greater than the first reference voltage, the power supply judgment unit 360 controls the system control circuit 200 to work in the first mode. The mode indicator light 120 is directly driven by the voltage of the power supply terminal BAT. At this time, the indicator light 120 is directly driven by the power supply 110 and does not need to be boosted. When the electronic atomization device uses a low-voltage power supply 110 and the voltage is not too high, the power supply is judged at this time. If the unit 360 determines that the detection voltage is less than the first reference voltage, the power supply determination unit 360 controls the system control circuit 200 to operate in the second mode. In the second mode, the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120 to light up. And the brightness is almost the same as using ordinary power supply 110. Therefore, both power sources 110 of the electronic atomization device in this embodiment can be used, and the electronic atomization device will not be damaged no matter which power source 110 is used.

3. The enable end of the voltage comparison unit 361 of the power supply judgment unit is also electrically connected to the light control unit 250. The light control unit 250 controls whether the voltage comparison unit 361 works. When the indicator light 120 needs to be lit, the light control unit 250 controls the voltage. The comparison unit 361 works. When the indicator light 120 does not need to be lit, the light control unit 250 controls the voltage comparison unit 361 not to work. With this setting, the standby power consumption of the voltage comparison unit 361 can be reduced, which is beneficial to energy saving.

4. In this embodiment, the first switch unit K1 is a MOS tube. MOS tubes are generally manufactured using a low-voltage process of less than or equal to 6V (high-voltage process costs are higher), which is beneficial to reducing costs. MOS tubes produced by low-voltage processes Its withstand voltage value is relatively low. When the voltage of the power supply 110 is relatively high, if the voltage is still boosted, for example, to twice the voltage of the power supply 110, then in some time periods or moments, the control end of the first switching unit K1, the The voltage between the two ends will be relatively large, exceeding the limit parameters of the MOS tube, which may cause damage to the first switching unit K1. In this embodiment, by setting the power supply judgment unit 360, when the detection voltage used to characterize the power supply terminal BAT is relatively high and greater than the first reference voltage, the voltage will not be boosted. When the detection voltage used to characterize the power supply terminal BAT is relatively low and less than the first reference voltage, the voltage will not be boosted. The voltage is boosted when the reference voltage is used. The boosted voltage (generally lower than 6V) is also lower than the withstand voltage value of the MOS tube. Therefore, the two terminals of the first switching unit K1 will not withstand a relatively large voltage. The first switching unit K1 is not easily damaged, its reliability will not be reduced, and it can also drive the indicator light 120 normally. Moreover, the voltage spike that the first switch unit K1 endures when it is turned off will be relatively small, and the first switch unit K1 and the indicator light 120 are not easily damaged.

Third embodiment

Please refer to Figure 10. Figure 10 is a circuit module diagram of the system control circuit of the third embodiment of the present application. This embodiment is similar to the first embodiment, so the parts not described in this embodiment can refer to the first embodiment. This embodiment The main difference between this example and the first embodiment is that it also includes a voltage reducing unit.

Please refer to FIG. 10 . In this embodiment, the system control circuit 200 also includes a voltage-reducing unit 470 . The voltage-reducing unit 470 is a low dropout linear regulator (LDO). Please refer to Figure 10 to Figure 12 in conjunction. The low voltage dropout linear regulator includes an adjustment tube 472, an operational amplifier 471, a first sampling resistor Rc1, and a second sampling resistor Rc2. In this embodiment, the adjustment tube 472 is a MOS tube. The MOS tube For example, it is an NMOS tube or a PMOS tube (the figure uses a PMOS tube as an example for illustration). The source of the MOS tube is electrically connected to the power supply terminal BAT, and the drain of the MOS tube is used as the output terminal and is connected to the first switch unit K1. The first end of the first switching unit K2 is electrically connected to the first end of the second switching unit K2. The first end of the first sampling resistor Rc1 is electrically connected to the drain of the MOS tube. The second end of the first sampling resistor Rc1 is electrically connected to the second end of the second sampling resistor Rc2. The first end is electrically connected, the second end of the second sampling resistor Rc2 is electrically connected to the power ground terminal GND, the non-inverting end of the operational amplifier 471 is connected to the second reference voltage, and the reverse end of the operational amplifier 471 is connected to the first sampling resistor Rc1 The second end of the operational amplifier 471 is electrically connected to obtain the sampling voltage, and the output end of the operational amplifier 471 is electrically connected to the control end of the MOS tube. In addition, in other embodiments of the present application, those skilled in the art also know that the adjustment tube 472 can be configured as a triode, which will not be described again here. In this embodiment, a low voltage dropout linear regulator is used to perform voltage reduction processing, which can achieve high efficiency, low cost, low noise, and small quiescent current. In addition, in other embodiments of the present application, the voltage reducing unit 470 may also be a conventional buck circuit. Since the buck circuit is a conventional conversion circuit in this field, details will not be described again here.

The working principle of the low dropout linear regulator is as follows: the sampling voltage is applied to the inverting terminal of the operational amplifier 471 and compared with the second reference voltage applied to the non-inverting terminal. After the difference between the two is amplified by the operational amplifier 471, the adjustment tube is controlled. 472 voltage drop, thereby stably outputting the preset voltage (when the voltage at the power supply end is high), generally the ratio of the second reference voltage to the preset voltage is Rcz2/(Rcz1+Rcz2), where Rcz1 is the first sampling resistor Rc1 The resistance value of Rcz2 is the resistance value of the second sampling resistor Rc2. When the voltage at the output terminal decreases, the difference between the second reference voltage and the sampling voltage increases, the driving current output by the operational amplifier 471 increases, and the voltage drop of the transistor decreases, thereby causing the voltage at the output terminal to increase; on the contrary, if the voltage at the output terminal When the preset voltage is exceeded, the pre-driving current output by the operational amplifier 471 decreases, thereby reducing the voltage at the output end; thus, the voltage at the output end of the low-voltage linear regulator is less than (when the voltage at the power supply end is low) or equal to the preset voltage, When the voltage of the power supply terminal BAT is higher than the preset voltage, the voltage at the output terminal of the low-voltage linear regulator will step down to the preset voltage. When the voltage of the power supply terminal BAT is lower than or equal to the preset voltage, , at this time, the adjustment tube 472 is normally turned on, and the voltage at the output terminal of the low-voltage linear regulator is equal to the voltage of the power supply terminal BAT. Therefore, the voltage at the output terminal of the low-voltage linear regulator will be less than or equal to the preset voltage.

In this embodiment, please continue to refer to Figure 12. The first switch unit K1 and the second switch unit K2 form a first boost unit. When the first switch unit K1 is turned on and the second switch unit K2 is turned off, it is used to make the A capacitor C1 is charged. When the first switch unit K1 is turned off and the second switch unit K2 is turned on, the potential at the first end of the first capacitor C1 is raised to twice the voltage at the output end of the buck unit 470. This voltage will be less than or A preset voltage equal to 2 times can drive the indicator light 120 well. The connection relationship and driving relationship between the first switch unit K1 and the second switch unit K2 are described in the first embodiment and the second embodiment, and will not be described again here. In this embodiment, regardless of whether the voltage of the power supply terminal BAT is higher or lower, the voltage of the power supply terminal BAT is stepped down to a preset voltage or less than the preset voltage through the voltage reducing unit 470, and then the voltage of the power supply terminal BAT is stepped down through the first voltage boosting unit 470. The unit boosts the voltage, and since the preset voltage can be controlled low, the maximum value of the final boosted voltage can also be controlled, so that the voltage between the control end and the second end of the first switching unit K1 is not will be larger, generally lower than 6V, and will not exceed the withstand voltage value of the MOS tube. The first switch unit K1 is not easily damaged, and can also drive the indicator light 120 normally. Moreover, since the output voltage of the buck unit 470 is less than or equal to the preset voltage, even after the voltage is boosted by the first boost unit, the voltage spike endured by the first switch unit K1 when it is turned off will be relatively small. , the indicator light 120 is not easily damaged.

In this embodiment, the preset voltage is less than 3V. Preferably, the preset voltage range is 1.5V-3V. For example, the preset voltage is 1.5V, 1.6V, 1.7V, 1.8V, 1.9V, 2V, 2.1 V, 2.2V, 2.3V, 2.4V, 2.5V, 2.6V, 2.7V, 2.8V, 2.9V, 3V, etc., for example, 2V. When the voltage of the power supply terminal BAT is greater than 2V, the voltage reducing unit 470 The voltage of the power supply terminal BAT is stepped down and a voltage of 2V is output. When the voltage of the power supply terminal BAT is less than 2V, the adjustment tube 472 remains normally on, and the output of the step-down unit 470 is equal to the voltage of the power supply terminal BAT. In addition, in this application In other embodiments, the voltage boosted by the first boosting unit at the output end of the bucking unit 470 is not limited to 2 times, and can also be set to other multiples as needed, such as 1.5 times, 3 times, 4 times, etc. In this case, it is preset The set voltage can be adjusted as needed. In addition, in other embodiments of the present application, the first boost unit may also be a boost circuit. Since the boost circuit is a conventional circuit in this field, details will not be described again here.

In this embodiment, the enable terminal of the operational amplifier 471 is electrically connected to the lighting control unit 250 , and the lighting control unit 250 is not electrically connected to the second input terminal of the first logic gate 241 . When the indicator light 120 does not need to be lit, the light control unit 250 controls the operational amplifier 471 to not work. When the indicator light 120 needs to be lit, the light control unit 250 controls the operational amplifier 471 to work. In this setting, only the operational amplifier 471 needs to be lit. The operational amplifier 471 only works when the indicator light 120 is turned on, and does not work at other times, which is beneficial to reducing energy consumption. In this embodiment, the light control unit 250 controls whether the operational amplifier 471 works through the enable terminal. When the light control unit 250 needs the indicator light 120 to work, the light control unit 250 controls the operational amplifier 471 to work through the enable terminal; When the unit 250 does not need the indicator light 120 to operate, the light control unit 250 controls the operational amplifier 471 to stop working through the enable terminal. In addition, in other embodiments of the present application, the enable end of the operational amplifier 471 may not be electrically connected to the light control unit 250. At this time, the light control unit 250 cannot control whether the operational amplifier 471 is working, and the operational amplifier 471 is always working. The light control unit 250 is electrically connected to the second input terminal of the first logic gate 241 .

This embodiment provides the voltage reduction unit 470, and the output terminal of the voltage reduction unit 470 is electrically connected to the input terminal of the first voltage boost unit, which has the following advantages:

1. In this embodiment, the switching unit in the first boost unit is generally a MOS tube. MOS tubes are generally manufactured using a low-voltage process (high-voltage processes have higher costs), which is beneficial to reducing costs. MOS tubes manufactured using a low-voltage process Its withstand voltage value is relatively low. When the voltage of the power supply 110 is relatively high and greater than the preset voltage, the voltage reduction unit 470 can stabilize its output voltage at the preset voltage. When the voltage of the power supply 110 is relatively low and is less than or equal to the preset voltage, the voltage reduction unit 470 reduces the voltage. The output voltage of the voltage-reducing unit 470 is less than or equal to the preset voltage, and then the output voltage of the voltage-reducing unit 470 is boosted by the first boosting unit. The boosted voltage will be lower and lower than the withstand voltage value of the MOS tube. , so that the switch unit in the first boost unit will not withstand a relatively large voltage and will not exceed the limit parameters of the MOS tube. The switch unit in the first boost unit will not be easily damaged and the reliability will not be reduced. At the same time, the voltage will be boosted. The latter voltage can also drive the indicator light 120 normally. Moreover, since the output voltage of the buck unit 470 is less than or equal to the preset voltage, even after the voltage is boosted by the first boost unit, the voltage spike endured by the first switch unit K1 when it is turned off will be relatively small. , the indicator light 120 is not easily damaged.

2. The power supply voltage range provided by the power supply of the electronic atomization device in this embodiment includes 1.5V-5V. For example, the power supply voltage range provided by the power supply is 1.5V-3.6V, 2.5V-4.2V or 3V-5V, that is, The power supply can use either low-voltage power supply 110 or ordinary power supply 110, that is, the power supply 110 can be mixed, which facilitates the assembly of the electronic atomization device, and there is no need to set corresponding system control circuits according to different power supplies 110. The system of this embodiment The control circuit is universal, which can improve the time competitiveness of the system control circuit. In this embodiment, regardless of whether the electronic atomization device uses a low-voltage power supply 110 or an ordinary power supply 110, its output voltage will be equal to or lower than the preset voltage after passing through the voltage reduction unit 470, and then the voltage will be boosted by the first boosting unit. Afterwards, the indicator light 120 can be driven normally, and the boosted voltage will not be too high.

3. The enable end of the operational amplifier 471 is also electrically connected to the light control unit 250. The light control unit 250 controls whether the operational amplifier 471 works. When the indicator light 120 needs to be lit, the light control unit 250 controls the operational amplifier 471 to work. When the indicator When the lamp 120 does not need to be lit, the lamp lighting control unit 250 controls the operational amplifier 471 not to work. Through such a setting, the power consumption of the operational amplifier 471 can be reduced, which is beneficial to energy saving.

4. The voltage reduction unit 470 of this embodiment preferably uses a low voltage dropout linear voltage regulator. The low voltage dropout linear voltage regulator has high voltage reduction efficiency, low cost, low noise, and small quiescent current.

Fourth embodiment

An embodiment of the present application provides an electronic atomization device. The electronic atomization device is, for example, an electronic cigarette. The electronic atomization device can also be used for beauty, medical treatment, etc. Referring to Figure 13, the electronic atomization device includes an indication component, a heating element 13, and an airflow sensor 140. The indication component includes a power supply 110, a first indicator light 120A, a system control circuit 200, and a first capacitor C1. The system control circuit 200 is electrically connected to the power supply 110, the first indicator light 120A, the heating element 13, the air flow sensor 140, etc. respectively. exist In this embodiment, the power supply 110 includes battery cells, such as lithium batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and other rechargeable batteries. The power supply 110 is a low-voltage power supply 110, and the power supply voltage range provided by it includes 1.5V. -3.6V, for example, the supply voltage range it provides is 1.5V-3.6V, 1.6V-3.6V, 1.5V-3.4V, 1.8V-3.5V, 2.1V-3.6V, 2.5V-3.5V, etc. Its nominal voltage is lower than or equal to 3V, and the nominal voltage is generally 2.5V-2.9V, such as 2.7V, 2.8V. The first indicator light 120A is, for example, an LED light. The LED light is, for example, a white LED light and/or a blue LED light. The forward voltage range of these LED lights is generally 2.5V-3.6V, such as 3V. The driving voltage of the LED light is Only when the voltage is greater than the forward conduction voltage can the LED light be lit. When the voltage is lower than the forward conduction voltage, the LED light will not be lit. The airflow sensor 140 is, for example, a MEMS sensor or a microphone, and the heating element 130 is, for example, a heating wire, a heating wire, a ceramic base containing a heating wire or a heating wire, or other conventional heating elements.

Please refer to Figures 13 and 14 in conjunction. In this embodiment, the system control circuit 200 includes a power supply terminal BAT, a power ground terminal GND, an atomization terminal AT, a heating control unit 300, a first switch unit K1 and a second one-way guide Pass component K21.

In this embodiment, the power supply terminal BAT is electrically connected to the positive electrode of the power supply 110, and the power supply ground terminal GND is electrically connected to the negative electrode of the power supply 110, so that the system control circuit 200 can be connected to the power supply 110, and the power supply 110 can supply power to the system control circuit 200. .

In this embodiment, the first end of the first switch unit K1 is electrically connected to the power supply terminal BAT for electrical connection with the positive electrode of the power supply 110, and the second end of the first switch unit K1 is electrically connected to the atomization terminal AT. , the atomization end AT is also used to be electrically connected to the first end of the heating element 13, the second end of the heating element 13 is electrically connected to the power ground terminal GND, and the control end of the first switch unit K1 is electrically connected to the heating control unit 300. The heating control unit 300 controls whether the first switch unit K1 is turned on. In this embodiment, when the heating control unit 300 controls the first switch unit K1 to be turned on, the heating element 13 heats the liquid in the electronic atomization device, such as smoke oil, so that the relevant liquid is atomized for the user to smoke. Suction; when the heating control unit 300 controls the first switch unit K1 to cut off, the heating element 13 stops heating, and the heating element 13 will not atomize the liquid in the electronic atomization device. In this embodiment, the first switch unit K1 is a PMOS transistor. Of course, in other embodiments of the present application, the first switch unit K1 may also be an NMOS transistor or other field effect transistor.

In this embodiment, the second one-way conduction element K21 is a two-terminal element. In Figure 14, the second one-way conduction element K21 is a diode. The anode of the diode is the first end and is electrically connected to the power supply terminal BAT. The cathode is the second end and is electrically connected to the first indicator light 120A. Here, the second end of the second one-way conduction element K21 can be directly electrically connected to the first end of the first indicator light 120A. The second one-way conduction element K21 There may also be other components between the second end and the first indicator light 120A, such as a current limiting resistor Rx, etc.

In this embodiment, the second end of the second one-way conductive element K21 is also electrically connected to the first end of the first capacitor C1, and the second end of the first capacitor C1 is electrically connected to the atomization terminal AT. Specifically, the second end of the first capacitor C1 is electrically connected to the power supply ground terminal GND via the atomization terminal AT and the heating element 13 . In this embodiment, the first switch unit K1 and the second one-way conduction element K21 form a first boost unit. The output end of the first boost unit is electrically connected to the first indicator light 120A. The first boost unit can use The output voltage is approximately 2 times the voltage of the power supply terminal BAT. Of course, in other embodiments of the present application, the first boost unit can make the output voltage be other multiples of the voltage of the power supply terminal BAT, such as 1.5 times, 3 times, 4 times, etc.

In this embodiment, when the electronic atomization device is in the suction state, the switch control unit controls the first switch unit K1 to be turned off during the first time period. Since the voltage of the power supply terminal BAT is relatively high, the second one-way conduction is The element K21 is automatically turned on, and the power supply 110 forms a charging loop through the power supply terminal BAT, the second unidirectional conduction element K21, the first capacitor C1, and the heating element 13. The first capacitor C1 is charged, and the voltage on the first capacitor C1 is charged to Approximately the same voltage as the power supply 110 (the conduction voltage drop of the diode needs to be subtracted); during the second time period, the switch control unit controls the first switch unit K1 to conduct, then the voltage at the second end of the first switch unit K1 is the voltage of the power supply 110, is Vbat, that is, the voltage at the second end of the first capacitor C1 is Vbat. Since the voltage on the first capacitor C1 cannot suddenly change, the potential at the first end of the first capacitor C1 is approximately raised to 2Vbat (need to subtract the diode conduction voltage drop), that is, approximately twice the voltage of the power supply 110. At this time, since the voltage of the second end of the second one-way conduction element K21 is greater than the voltage of its first end, the second one-way conduction element K21 automatically cuts off, Moreover, since the potential of the first terminal of the first capacitor C1 is raised to approximately 2Vbat, even if the power supply 110 is a low-voltage power supply 110, the supply voltage range of the low-voltage power supply 110 is 1.5V-3.6V, which is approximately twice the supply voltage of Vbat. The range is generally greater than 3V, so that in most of the supply voltage range of the low-voltage power supply 110, it is greater than or equal to the minimum forward direction of the first indicator light 120A. The conduction voltage allows the first indicator lamp 120A to be driven normally within most of the supply voltage range of the low-voltage power supply 110 and the first indicator lamp 120A can be lit.

In this embodiment, since the first switch unit K1 can control whether the heating element 13 generates heat and can also control whether the first capacitor C1 increases the voltage, that is, the first switch unit K1 has at least two functions. Specifically, when the heating control unit 300 controls the first switch unit K1 to turn off, the heating element 13 does not generate heat at this time, and at the same time, the first capacitor C1 is charged, and the first capacitor C1 is charged to approximately equal to the value of the power supply terminal BAT. Voltage; when the heating control unit 300 controls the first switch unit K1 to be turned on, the heating element 13 will generate heat and atomize the liquid in the electronic atomization device. At the same time, the potential of the second end of the first capacitor C1 is the voltage of the power supply 110, Therefore, the potential of the first terminal of the first capacitor C1 is raised, the second unidirectional conduction element K21 is cut off, and at the same time, the voltage of the first terminal of the first capacitor C1 is greater than or equal to the minimum conduction voltage of the first indicator light 120A, and it can It is used to drive the first indicator light 120A to light up. That is to say, in this embodiment, the first indicator light 120A can be lit only when the heating element 13 generates heat. When the heating element 13 does not generate heat, the first indicator light 120A can be lit. Will not be lit. In this embodiment, the second terminal of the first capacitor C1 is electrically connected to the atomization terminal AT. The system control circuit 200 does not need to add a separate terminal connected to the second terminal of the first capacitor C1, thereby reducing the number of terminals. Helps reduce costs. Moreover, in this embodiment, the first switch unit K1 is shared, and there is no need to add an additional switch unit for boosting, which is beneficial to reducing costs.

In this embodiment, the system control circuit 200 further includes a suction detection unit (not shown in the figure), and the suction detection unit is electrically connected to the airflow sensor 140 . The suction detection unit is also electrically connected to the heat control unit 300. When the suction detection unit detects that the user is suctioning the electronic atomization device, the suction detection unit determines that the electronic atomization device is in a suction state, and the suction detection unit outputs a first signal to the heating control unit 300; when the suction detection unit does not When it is detected that the user inhales the electronic atomization device, the inhalation detection unit determines that the electronic atomization device is in a non-inhalation state, and the inhalation detection unit outputs a second signal to the heating control unit 300 . In this embodiment, when the heating control unit 300 receives the first signal, the heating control unit 300 outputs a switching signal to the control end of the first switch unit K1, and when the heating control unit 300 receives the second signal, the heating control unit 300 controls The first switching unit K1 is normally off. In this embodiment, the switching signal is preferably a duty cycle signal. The duty cycle signal includes periodic low levels and high levels. When the duty cycle signal is at a low level, the first switch unit K1 is turned on and generates heat. The element 13 generates heat, the first end of the first capacitor C1 is boosted, and the second one-way conduction element K21 is turned off; when the duty cycle signal is at a high level, the first switch unit K1 is turned off, and the second one-way conduction element is turned off. K21 is turned on, and the first capacitor C1 is charged.

In the embodiment, the heating control unit 300 controls whether the first switch unit K1 is turned on through the PWM (Pulse Width Modulation) method. The PWM method is such that the frequency (period) remains unchanged, and the turn-on time, turn-off time of the first switch unit K1 The cut-off time is adjustable. In this way, the first switch unit K1 is turned on during the turn-on time of one cycle, and is turned off during the turn-off time. In addition, in other embodiments of the present application, the system control unit can also control whether the heating element 13 works through the PFM (pulse frequency modulation) method. The PFM method allows the frequency (period) to be adjusted, and the first switch unit K1 is turned on and conducted The time or turn-off time remains unchanged. In this method, the first switch unit K1 is turned on during the turn-on time of one cycle, and the first switch unit K1 is turned off during the turn-off time. PWM mode and PFM mode can realize constant power and constant voltage output of the electronic atomization device. When the electronic atomization device is in the non-vaping state, the heating control unit 300 stops driving the first switch unit K1 at this time. Keep it normally open, and the first switch unit K1 does not work at this time. In this embodiment, the heating control unit 300 outputs a low-level signal during the turn-on time, and the heating control unit 300 outputs a high-level signal during the turn-off time.

In order to effectively control whether the first indicator light 120A is lit and prevent the first indicator light 120A from being lit when it does not need to be lit, in this embodiment, the system control circuit 200 also includes a light control unit 400. The light control unit 400 It is used to control whether the first indicator light 120A emits light. In this embodiment, please continue to refer to Figure 14. The system control circuit 200 also includes a third switch unit K3. The third switch unit K3 is connected in series with the first indicator light 120A. In this embodiment, the third switch unit K3 One end is electrically connected to the second end of the first indicator light 120A through the current limiting resistor Rx, the second end of the third switch unit K3 is electrically connected to the power ground terminal GND, and the control end of the third switch unit K3 is connected to the light control unit 400 Electrically connected, the light control unit 400 is used to control whether the third switch unit K3 is turned on. Only when the third switch unit K3 is turned on can the first indicator light 120A light up. Only when the first indicator light 120A needs to be lit Only when the light is turned on does the control unit 400 control the third switch unit K3 to turn on. In this embodiment, the third switch unit K3 is an NMOS transistor. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the first indicator light 120A and the third switch unit K3 are located. In addition, in other embodiments of the present application, please refer to FIGS. 15 and 16 , the third switch unit K3 may also be located between the first end of the first indicator light 120A and the second end of the second one-way conductive element K21 time, specifically, the first end of the third switch unit K3 is electrically connected to the second end of the second one-way conductive element K21, and the second end of the third switch unit K3 is connected to the first indicator light 120A via the current limiting resistor Rx. The first end is electrically connected, the second end of the first indicator light 120A is electrically connected to the power ground terminal GND, and the control end of the third switch unit K3 is electrically connected to the light control unit 400. Here, the third switch unit K3 is PMOS Tube. In addition, in other embodiments of the present application, the third switch unit K3 can also be replaced by a current source. At this time, the current source is connected in series with the first indicator light 120A, and the control end of the current source is electrically connected to the light control unit 400, and the light turns on. The control unit 400 controls whether the current source is working. The first indicator light 120A can be lit only when the current source is working. The light control unit 400 controls whether the current source is not working, so that the first indicator light 120A will not emit light. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the third switch unit K3 and the first indicator light 120A are located.

In this embodiment, the first indicator light 120A will emit light only when the first switch unit K1 is turned on and the light is turned on at the same time. The control unit 400 controls the third switch unit K3 to be turned on or the current source is working. As long as one of them is not working, the first indicator light 120A will be turned on. The lamp 120A will not emit light, that is, the first switch unit K1 is turned off, or the light control unit 400 controls the third switch unit K3 to be turned off, or the light control unit 400 controls the current source to not work. In this embodiment, when the electronic atomization device is in the suction state, the third switch unit K3 and the first switch unit K1 are turned on or off synchronously, that is, when the first switch unit K1 is turned on, the third switch unit is turned on at this time. K3 is turned on, and the third switch unit K3 is turned off when the first switch unit K1 is turned off. At this time, the heating of the heating element 13 is synchronized with the lighting of the first indicator light 120A, that is, the heating time of the heating element 13 is synchronized with the lighting of the first indicator light 120A. The lighting time is equal. In this case, one implementation method is that the light control unit 400 includes an inverter 321. The input end of the inverter 321 is electrically connected to the control end of the first switch unit K1, and the output end of the inverter 321 is connected to the control end of the first switch unit K1. The control end of the three-switch unit K3 is electrically connected. The application is not limited to this. In other embodiments of the application, the input end of the inverter 321 may also be electrically connected to the heating control unit 300 . The application is not limited to this. In other embodiments of the application, the heating time of the heating element 13 may be greater than the lighting time of the first indicator light 120A. At this time, when the first switch unit K1 is turned on, the light control unit 400 can control the third switch to be turned on after a period of time, and both are turned off at the same time, or the light control unit 400 can control the third switch unit K3 and the first switch unit K1 to be turned on at the same time, and the light control unit 400 controls the third switch unit K3 is turned off in advance relative to the first switch unit K1, or the light control unit 400 can control the third switch to turn on after a period of delay, and the light control unit 400 controls the third switch unit K3 to be turned off in advance relative to the first switch unit K1. In addition, in other embodiments of the present application, the aforementioned third switch unit K3 can also be replaced with a current source. When the current source is working, the third switch unit K3 is turned on, and when the current source is not working, the third switch unit K3 is turned off. Deadline. Such an arrangement can control the lighting time and lighting duration of the first indicator light 120A as needed.

In this embodiment, please refer to Figures 13 and 14 in conjunction. The system control circuit 200 is located on the same chip. This chip is called the system control chip. The power supply terminal BAT is the power supply pin BAT, and the power ground terminal GND is the power supply pin. The ground pin GND, the atomization terminal AT is the atomization pin AT. The system control chip also includes a first light-emitting pin FG1 and a second light-emitting pin FG2, where the first light-emitting pin FG1 is used to communicate with the first capacitor C1 The first end of the first indicator light 120A is electrically connected to the first end of the first indicator light 120A. The atomization pin AT is used to be electrically connected to the second end of the first capacitor C1 and the heating element 13. The second light-emitting pin FG2 is used to be electrically connected to the first end of the first capacitor C1. The second end of an indicator light 120A is electrically connected to the third switch unit K3. In this embodiment, the system control chip also includes an airflow detection pin SW. The airflow detection pin SW is electrically connected to the airflow sensor 140. The airflow sensor 140 is, for example, a capacitive microphone, a switch microphone, a MEMS sensor, etc. The airflow detection pin SW SW is electrically connected to the suction detection unit. Through the suction detection unit and the airflow sensor 140, it can be detected whether the electronic atomization device is in a suction state or a non-suction state. In addition, in other embodiments of the present application, the system control chip can also integrate the first capacitor C1. In addition, in other embodiments of the present application, the system control chip can also integrate the air flow sensor 140 , that is, the air flow sensor 140 and the system control circuit 200 are located on the same chip. In addition, in other embodiments of the present application, the first switch unit K1 may not be located on the system control chip. In this case, the first switch unit K1 may be located outside the system control chip, and the first switch unit K1 may be located on another chip. Or not on the chip. In addition, in other embodiments of the present application, please refer to Figures 15 and 16 in conjunction. The system control chip includes a first light-emitting pin FG1 and a second light-emitting pin FG2, where the first light-emitting pin FG1 is used to communicate with the first light-emitting pin FG1. The first end of a capacitor C1 and the second end of the second one-way conductive element K21 are electrically connected. The second light-emitting pin FG2 is connected to the first capacitor through the current limiting resistor Rx, the third switching unit K3, the first light-emitting pin FG1 The first end of C1 is electrically connected, and the second light-emitting pin FG2 is electrically connected to the second end of the second unidirectional conduction element K21 via the current limiting resistor Rx, the third switch unit K3 connection, the second light-emitting pin FG2 is also used to be electrically connected to the first end of the first indicator light 120A, and the second end of the first indicator light 120A is electrically connected to the power ground pin GND.

In this embodiment, the indication component includes a first indicator light 120A. When the heating element 13 generates heat, the first indicator light 120A may be lit all the time, may be lit part of the time, or may not be lit. In order to achieve indication through the indicator light even when the heating element 13 is not working, in other embodiments of the present application, the indicator component may also include a second indicator light. The second indicator light is not controlled by the first switch unit K1. The second indicator light is controlled by other means, and the second indicator light is used to indicate other states of the electronic atomization device, such as whether to charge or not.

In this embodiment, the electronic atomization device also includes a containing device, which is hollow and used to contain liquid, such as e-cigarette oil, medical liquid, beauty liquid, etc., the containing device is such as cigarette cartridges, etc., and the heating element 13 is also located In the containing device, the heating element 13 is in contact with the liquid. When the heating control unit 300 controls the first switch unit K1 to be turned on, the heating element 13 generates heat to atomize the liquid, and the liquid turns into gas, which can be sucked by the user or used for other purposes. .

In this embodiment, the second unidirectional conduction element K21 is a diode. Generally, there is a conduction voltage drop that cannot be ignored when the diode is turned on. The conduction voltage drop is generally 0.7V. For example, when the low-voltage power supply 110 is 1.6V, when the When the first switch unit K1 is turned off, the second unidirectional conduction element K21 is turned on. At this time, the voltage on the first capacitor C1 is charged to 0.9V (1.6V-0.7V); when the first switch unit K1 is turned on When , the potential of the first terminal of the first capacitor C1 is raised to (1.6+0.9)V, which is 2.5V. It cannot drive the first indicator light 120A to emit light normally, and the voltage of the low-voltage power supply 110 needs to be further increased. For example, the voltage of the low-voltage power supply 110 Only when the low voltage rises to 2V can the indicator light emit light normally. That is, the first indicator light 120A cannot emit light within the entire power supply range of the low-voltage power supply 110 but can only emit light within a part of the power supply range of the low-voltage power supply 110 . In order to solve this problem, this application provides a fifth embodiment.

Fifth embodiment

Please refer to Figure 17. Figure 17 is a partial detailed circuit diagram of the indicating component of the fifth embodiment of the present application. This embodiment is similar to the fourth embodiment, so the parts not described in this embodiment can refer to the fourth embodiment. This embodiment The main difference from the fourth embodiment is that the second one-way conductive element K21 includes a second switch unit.

Please refer to Figure 15 and Figure 17 in conjunction. In this embodiment, the heating control unit 300 also includes a second drive unit 320 and a heating logic unit 330. The second one-way conduction element K21 is a three-terminal element. K21 includes a second switch unit. The first end of the second switch unit is electrically connected to the power supply terminal BAT. The second end of the second switch unit is used to connect to the first end of the first capacitor C1 and the third end of the first indicator light 120A. One end is electrically connected, the control end of the second switch unit is electrically connected to the second drive unit 320, and the input end of the second drive unit 320 is electrically connected to the heating logic unit 330 or the control end of the first switch unit K1. In this embodiment The description takes the electrical connection between the input terminal of the second driving unit 320 and the control terminal of the first switch unit K1 as an example.

Please continue to refer to Figure 17. In this embodiment, the second switch unit is a PMOS tube. When the second switch unit is turned on, the conduction voltage drop of the second switch unit is very small, generally less than 0.1V. This conduction voltage The voltage drop across the diode is negligible. In this embodiment, the second driving unit 320 includes an inverter 321 (the inverter 321 is also called a NOT gate), a second NMOS transistor NM2, a third NMOS transistor NM3, a second PMOS transistor PM2 and a third PMOS transistor. PM3. Among them, the input end of the inverter 321 (the input end of the second driving unit 320) is electrically connected to the control end of the first switch unit K1, and the output end of the inverter 321 is electrically connected to the control end of the second NMOS transistor NM2. The source of the second NMOS transistor NM2 is electrically connected to the power ground terminal GND, and the drain of the second NMOS transistor NM2 is electrically connected to the drain of the second PMOS transistor PM2 and the control terminal of the third PMOS transistor PM3 respectively. The control terminal of PM2 is electrically connected to the drain of the third NMOS transistor NM3, the source of the second PMOS transistor PM2 is electrically connected to the first terminal of the first capacitor C1, and the source of the third NMOS is electrically connected to the power ground terminal GND. The control terminal of the third NMOS (the input terminal of the second driving unit 320) is electrically connected to the control terminal of the first switch unit K1. The drain of the third NMOS transistor NM3 is also electrically connected to the drain of the third PMOS transistor PM3. The source of the third PMOS transistor PM3 is electrically connected to the first terminal of the first capacitor C1, and the drain of the third NMOS transistor NM3 is also used to control whether the second switch unit is turned on. In this embodiment, the drain of the third NMOS transistor NM3 is directly electrically connected to the control terminal of the second switch unit, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the third NMOS Multiple inverters 321 may also be provided between the drain of the tube NM3 and the control terminal of the second switch unit, for example, 2, 4, or 6 inverters 321 may be provided. The inverters 321 may be composed of, for example, CMOS tubes. In addition, in other parts of this application In the embodiment, the second switch unit may also be an NMOS transistor. In this case, the second drive unit 320 further includes a second boost circuit. The second boost circuit is used to drive the second switch unit to conduct, and the second boost circuit boosts the voltage. The compressed voltage is greater than the voltage of the power supply 110 to control the conduction of the second switch unit; the second boost circuit can be a conventional boost circuit in the field, such as a boost boost circuit, a charge pump, etc., which will not be described in detail here. .

In this embodiment, the first switch unit K1 is a PMOS transistor. In addition, in other embodiments of the present application, the first switch unit K1 may also be an NMOS transistor. In this embodiment, the heating control unit 300 further includes a first driving unit 310. The first driving unit 310 includes a first NMOS transistor NM1 and a first PMOS transistor PM1. Among them, the source of the first NMOS transistor NM1 is electrically connected to the power ground terminal GND, the control end of the first NMOS transistor NM1 is electrically connected to the heating logic unit 330, and the drain of the first NMOS transistor NM1 is electrically connected to the drain of the first PMOS transistor PM1. The control terminal of the first PMOS tube PM1 is electrically connected to the heating logic unit 330, the source of the first PMOS tube PM1 is electrically connected to the power supply terminal BAT, and the drain of the first NMOS tube NM1 is also used to control the first Is the switch unit K1 conducting? In this embodiment, the drain of the first NMOS transistor NM1 is directly electrically connected to the control terminal of the first switch unit K1, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the first Multiple inverters 321 may also be provided between the drain of the NMOS transistor NM1 and the control terminal of the first switch unit K1, for example, 2, 4, or 6 inverters 321 may be provided.

In this embodiment, the heating logic unit 330 is electrically connected to the suction detection unit. When the suction detection unit detects that the user performs a suction action, the suction detection unit determines that the electronic atomization device is in a suction state, and the suction detection unit outputs The first signal is given to the heating logic unit 330. During the first time period, the heating logic unit 330 controls the first switch unit K1 to be turned off and the second unidirectional conductive element K21 to be turned on. At this time, the first capacitor C1 is charged. During the time period, the heating logic unit 330 controls the first switch unit K1 to be turned on and the second unidirectional conductive element K21 to be turned off. At this time, the potential of the first end of the first capacitor C1 is raised to twice the voltage of the power supply 110 to use So that the first indicator light 120A may be lit. In this embodiment, the first switch unit K1 is driven by PWM mode or PFM mode. The first time period corresponds to the turn-off cut-off time, and the second time period corresponds to the turn-on time. The first time period and the second time period are in one The duration of the cycle is determined by the value of constant power or constant voltage. In this embodiment, the first switch unit K1 and the second one-way conduction element K21 will not be turned on at the same time, but they can be turned off at the same time in some time periods, such as when the electronic atomization device is in a non-vaping state.

In this embodiment, since the second unidirectional conduction element K21 is the second switch unit, for example, the second switch unit is a PMOS tube or an NMOS tube, the conduction voltage drop of the PMOS tube or NMOS tube is less than 0.1V. Compared with the fourth The conduction voltage drop of the diode in the embodiment is 0.7V. This embodiment greatly reduces the conduction voltage drop of the second unidirectional conduction element K21, which allows the first indicator light 120A to operate within nearly the entire power supply range of the low-voltage power supply 110. Can be lit. For example, when the low-voltage power supply 110 is 1.6V, when the first switching unit K1 is turned off and the second unidirectional conduction element K21 is turned on, the conduction voltage drop of the PMOS tube or NMOS tube can be almost ignored. The voltage on a capacitor C1 is charged to the voltage of the power supply 110, which is 1.6V; when the first switch unit K1 is turned on and the second unidirectional conduction element K21 is turned off, the potential of the first end of the first capacitor C1 is raised. It is 1.6+1.6V and is 3.2V, which is greater than the minimum conduction voltage of the first indicator light 120A and can drive the indicator light to emit light normally. The first indicator light 120A in this embodiment can emit light in nearly the entire power supply range of the low-voltage power supply 110, and there is no need to adjust the power supply range of the low-voltage power supply 110. Moreover, the second one-way conductive element K21 in this embodiment is a controllable element, which is convenient for control.

Sixth embodiment

An embodiment of the present application provides an electronic atomization device. The electronic atomization device is, for example, an electronic cigarette. Please refer to Figure 1. The electronic atomization device includes an indicating component, a heating wire 130, and an airflow sensor 140. The indicating component includes a power supply 110 and an indicator light. 120. System control circuit 200, first capacitor C1. Among them, the system control circuit 200 is electrically connected to the power supply 110, the indicating component, the heating wire 130, the air flow sensor 140, etc. respectively. In this embodiment, the power supply 110 includes a battery cell. The power supply 110 is a low-voltage power supply. The power supply voltage it provides ranges from 1.5V to 3.6V. For example, the power supply voltage it provides ranges from 1.5V to 3.6V and 1.6V to 1.6V. 3.6V, 1.5V-3.4V, 1.8V-3.5V, 2.1V-3.6V, 2V-3V, etc., their nominal voltage is lower than or equal to 3V, the nominal voltage is generally 2.5V-2.9V, for example, 2.7 V, 2.8V. The indicator light 120 is, for example, an LED light. The LED light is, for example, a white LED light and/or a blue LED light. The forward voltage range of these LED lights is generally 2.5V-3.6V, such as 3V. The voltage for driving the LED light is only Only when the forward voltage is greater than the forward voltage can the LED light be lit. The air flow sensor 140 is, for example, MEMS Sensor or microphone, etc.

Please refer to FIG. 1 and FIG. 18 in conjunction. In this embodiment, the system control circuit 200 includes a power supply terminal BAT, a power ground terminal GND, a switch control unit, a first switch unit K1 and a second switch unit K2.

In this embodiment, the first end of the first switch unit K1 is electrically connected to the power supply terminal BAT for electrical connection with the positive electrode of the power supply 110 , and the second end of the first switch unit K1 is used for electrical connection with the indicator light 120 connection, here the second end of the first switch unit K1 can be directly electrically connected to the first end of the indicator light 120. There can also be other components between the indicator light 120 and the first switch unit K1, such as a current limiting resistor, other Switch unit, constant current source, etc., the control terminal of the first switch unit K1 is electrically connected to the switch control unit, and the switch control unit controls the on or off of the first switch unit K1.

In this embodiment, during the first time period, the switch control unit controls the first switch unit K1 to turn on and the second switch unit K2 to turn off. At this time, the power supply 110 supplies power to the first capacitor C1 through the power supply terminal BAT and the first switch unit K1. Charging, since the conduction voltage drop (less than 0.1V) of the first switching unit K1 is negligible, the voltage on the first capacitor C1 is charged to the same voltage as the power supply 110, assuming that the voltage of the power supply 110 is Vbat, in the second time period The switch control unit controls the second switch unit K2 to be turned on and the first switch unit K1 to be turned off. Since the turn-on voltage drop (less than 0.1V) of the second switch unit K2 is negligible, the voltage drop at the second end of the second switch unit K2 is negligible. The voltage is the voltage of the power supply 110, which is also Vbat, that is, the voltage at the second end of the first capacitor C1 is Vbat. Since the voltage on the first capacitor C1 cannot change suddenly, the potential at the first end of the first capacitor C1 is raised to Vbat. +Vbat is 2Vbat, which is twice the voltage of the power supply 110. Therefore, even if the power supply 110 is a low-voltage power supply, the voltage working range of the low-voltage power supply 110 is 1.5V-3.6V, and the voltage range of twice Vbat is 3V-7.2V. Even if the low-voltage power supply 110 works at the lowest value of the voltage operating range, 1.5V, twice the Vbat is 3V, which is greater than or equal to the minimum forward conduction voltage of the indicator light 120, so the indicator light 120 can be driven by the low-voltage power supply 110 normally, indicating The lamp 120 can operate normally within the entire operating range of the low voltage power supply 110 . Moreover, in this embodiment, the charging of the first capacitor C1 is controlled by the first switch unit K1. Since the conduction voltage drop of the first switch unit K1 is almost negligible, the conduction voltage drop of the diode cannot be ignored (generally 0.7V), this embodiment greatly improves the voltage range in which the low-voltage power supply 110 can drive the indicator light 120. The indicator light 120 can work normally within the entire working range of the low-voltage power supply 110, and the indicator light 120 is brighter when driven. , the user experience is better; furthermore, this embodiment uses the first switch unit K1 to control whether to charge the first capacitor C1 and whether to boost the voltage to drive the indicator light 120. The first switch unit K1 is a controllable element, which is convenient for control. In addition, in other embodiments of the present application, the first switch unit K1 can also be replaced by a diode. The anode of the diode is electrically connected to the power supply terminal, and the cathode of the diode is used to be electrically connected to the first end of the first capacitor C1. This When the second switch unit is turned on, the voltage is boosted. When the second switch unit is turned off, the voltage is not boosted and the diode is turned on.

In order to reduce energy consumption, in this embodiment, the charging element is the third switch unit K3. When the voltage needs to be boosted, the third switch unit K3 and the first switch unit K1 are turned on at the same time and turned off at the same time. In other scenarios, the third switch unit K3 is turned off. Whether the switch unit K3 and the first switch unit K1 are turned on may be asynchronous. The control end of the third switch unit K3 is electrically connected to the switch control unit. The first end of the third switch unit K3 is electrically connected to the second end of the first capacitor C1 and the second end of the second switch unit K2. The third switch unit The second terminal of K3 is electrically connected to the power supply terminal BAT. In this embodiment, when the first switch unit K1 and the third switch unit K3 are turned off, the second switch unit K2 is turned on. At this time, the branch where the third switch unit K3 is located does not need to consume energy, which is beneficial to Energy saving. In addition, in other embodiments of the present application, the charging element can also be a resistor. Compared with the solution of the third switch unit K3, the branch where the resistor is located needs to consume energy when the second switch unit K2 is turned on, which is not conducive to saving. energy.

In this embodiment, the first switch unit K1 is a PMOS tube, the second switch unit K2 is a PMOS tube, and the third switch unit K2 is a PMOS tube. Off unit K3 is an NMOS tube. However, the present application is not limited to this. In other embodiments of the present application, the first switch unit K1 may also be an NMOS transistor, the second switch unit K2 may be an NMOS transistor, and the third switch unit K3 may be a PMOS transistor. In addition, in other embodiments of the present application, the switch types of the first switch unit K1, the second switch unit K2, and the third switch unit K3 may be the same or different. In addition, in other embodiments of the present application, the first switch unit K1, the second switch unit K2, and the third switch unit K3 may also be other field effect transistors.

Specifically, please refer to Figure 1, Figure 18 and Figure 19. The first driving unit 210 includes an inverter (the inverter is also called a NOT gate) 211, a first NMOS transistor NM1, a second NMOS transistor NM2, a first PMOS transistor PM1 and second PMOS transistor PM2, wherein the input end of the inverter 211 is electrically connected to the control end of the second switching unit K2, and the output end of the inverter 211 is electrically connected to the control end of the first NMOS transistor NM1, The source of the first NMOS transistor NM1 is electrically connected to the power ground terminal GND. The drain of the first NMOS transistor NM1 is electrically connected to the drain of the first PMOS transistor PM1 and the control end of the second PMOS transistor PM2 respectively. The first PMOS transistor The control terminal of PM1 is electrically connected to the drain of the second NMOS transistor NM2, the source of the first PMOS transistor PM1 is electrically connected to the first terminal of the first capacitor C1, and the source of the second NMOS is electrically connected to the power ground terminal GND. The control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit K2, the drain of the second NMOS transistor NM2 is also electrically connected to the drain of the second PMOS transistor PM2, and the source of the second PMOS transistor PM2 is electrically connected to the first The first end of the capacitor C1 is electrically connected, and the drain of the second NMOS transistor NM2 is also used to control whether the first switch unit K1 is turned on. In this embodiment, the drain of the second NMOS transistor NM2 is directly electrically connected to the control terminal of the first switch unit K1, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the second Multiple inverters 211 can also be provided between the drain of the NMOS tube NM2 and the control terminal of the first switching unit K1, for example, 2, 4, or 6 inverters 211. The inverters 211 are, for example, made of CMOS tubes. constitute. In addition, in other embodiments of the present application, when the first switch unit K1 is an NMOS tube, the first drive unit 210 also includes a second boost circuit, and the second boost circuit is used to drive the first switch unit K1 is turned on, the boosted voltage of the second boost circuit is greater than the voltage of the power supply 110; the second boost circuit can be a conventional boost circuit in the field, such as a boost circuit, etc., which will not be described again here.

In order to drive the second switch unit K2 and the third switch unit K3, in this embodiment, please continue to refer to Fig. 1, Fig. 18 and Fig. 19. The switch control unit includes a second driving unit 220 and a third driving unit 230. The second driving unit 220 is electrically connected to the control terminal of the second switch unit K2, and the third driving unit 230 is electrically connected to the control terminal of the third switch unit K3.

Specifically, the second driving unit 220 includes a third NMOS transistor NM3 and a third PMOS transistor PM3, wherein the source of the third NMOS transistor NM3 is electrically connected to the power ground terminal GND, and the control end of the third NMOS transistor NM3 is connected to the logic control The unit 240 is electrically connected, the drain of the third NMOS transistor NM3 is electrically connected to the drain of the third PMOS transistor PM3, the control end of the third PMOS transistor PM3 is electrically connected to the logic control unit 240, and the source of the third PMOS transistor PM3 is electrically connected to The power supply terminal BAT is electrically connected, and the drain of the third NMOS transistor NM3 is also used to control whether the second switch unit K2 is turned on. In this embodiment, the drain of the third NMOS transistor NM3 is directly electrically connected to the control terminal of the second switch unit K2, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the third Multiple inverters 211 may also be provided between the drain of the NMOS transistor NM3 and the control terminal of the second switch unit K2, for example, 2, 4, or 6 inverters 211 may be provided.

In this embodiment, the logic control unit 240 includes a first logic gate 241 and a second logic gate 242 . The first logic gate 241 includes a first input terminal, a second input terminal, and a third input terminal. The first input terminal of the first logic gate 241 is connected to the clock signal CLK, and the second input terminal of the first logic gate 241 is connected to the clock signal CLK. Enable signal, the third input terminal of the first logic gate 241 is electrically connected to the control terminal of the third switch unit K3. The second logic gate 242 includes a first input terminal and a second input terminal. The first input terminal of the second logic gate 242 is electrically connected to the control terminal of the second switch unit K2. The second input terminal of the second logic gate 242 is connected to Clock signal CLK. In this embodiment, the first logic gate 241 is a NOR gate, and the second logic gate 242 is a NAND gate. In this embodiment, when the enable signal is high level, the first switch unit K1 is normally on and the second switch unit K2 is normally off. At this time, the indicator light 120 will not be lit. When the enable signal When it is low level, the first switch unit K1, the third switch unit K3, and the second switch unit K2 are controlled by the clock signal CLK. Moreover, since the third input terminal of the first logic gate 241 is electrically connected to the control terminal of the third switch unit K3, the first input terminal of the second logic gate 242 is electrically connected to the control terminal of the second switch unit K2, so that the second The switch unit K2 and the third switch unit K3 will not be turned on at the same time. One of them will be turned on, and the other will be turned off. In addition, in other embodiments of the present application, the first logic gate 241 can also be other logic gate circuits, which can realize the effect of a NOR gate, and the second logic gate 242 can also be other logic gate circuits, which can realize the NAND gate. Effect. In this embodiment, the clock signal CLK is a periodic pulse signal. One cycle of the clock signal CLK includes a first time period and a second time period. In the first time period, the clock signal is at a high level, and in the second time period, the clock signal CLK is at a high level. The clock signal is at a low level, and the frequency of the clock signal CLK is greater than or equal to 50Hz. The period of the clock signal CLK is also the charge and discharge period of the first capacitor C1. When the indicator light 120 needs to be lit, it is also the point of the indicator light 120. The bright cycle, setting such a high frequency, can prevent human eyes from distinguishing the flashing of the indicator light 120 .

In order to effectively control whether the indicator light 120 is lit and prevent the indicator light 120 from being lit when it does not need to be lit, in this embodiment, please continue to refer to Figures 1, 18 and 19. The system control circuit 200 also includes a third A MOS tube M0, the first MOS tube M0 and the indicator light 120 are connected in series. In this embodiment, the second end of the first MOS tube M0 and the second end of the indicator light 120 are electrically connected through the current limiting resistor Rx. The first end of the tube M0 is electrically connected to the power ground terminal GND. The control end of the first MOS tube M0 is controlled by the light control unit 250. The light control unit 250 is used to control whether the first MOS tube M0 is turned on. Only when the first The indicator light 120 can emit light only when the MOS tube M0 is turned on. The light control unit 250 will control the first MOS tube M0 to turn on only when the indicator light 120 needs to be lit. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the indicator light 120 and the first MOS transistor M0 are located. In addition, in other embodiments of the present application, please refer to FIG. 4 and FIG. 20 , the first MOS transistor M0 may also be located between the indicator light 120 and the second end of the first switch unit K1. Specifically, the first MOS transistor M0 The first end of the tube M0 is electrically connected to the first end of the first switch unit K1. The second end of the first MOS tube M0 is electrically connected to the first end of the indicator light 120 via the current limiting resistor Rx. The second end of the indicator light 120 terminal is electrically connected to the power ground terminal GND, and the control terminal of the first MOS tube M0 is electrically connected to the light control unit 250. Here, the first MOS tube M0 is a PMOS tube, and the first MOS tube M0 is used as a switching element, and its conductor It usually works in the linear region of the MOS tube. In addition, in other embodiments of the present application, the first MOS transistor M0 can also be included in the current source. In this case, the current source is connected in series with the indicator light 120, and the control end of the current source is electrically connected to the light control unit 250. The light control unit 250 controls whether the current source is working. Only when the current source is working, the first MOS tube M0 is turned on, and the indicator light 120 can be lit. When the light control unit 250 controls the current source not working, the first MOS tube M0 is turned off. The indicator light 120 does not emit light. At this time, the first MOS transistor works in the saturation region of the MOS transistor when it is turned on. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the first MOS transistor M0 and the indicator light 120 are located.

Please continue to refer to Figure 19. In this embodiment, the light control unit 250 is used to output an enable signal, that is, the light control unit 250 is electrically connected to the second input terminal of the first logic gate 241. When the indicator light 120 does not need to be lit, When it is on, the light control unit 250 controls the first MOS tube M0 to turn off. At the same time, the light control unit 250 outputs a high-level enable signal. The first switch unit K1 and the third switch unit K3 are always on. The second switch unit K2 is normally off, so the first capacitor C1 During charging, the indicator light 120 will not be lit even if the first MOS transistor M0 mis-turns on at this time, forming a double mechanism to prevent the indicator light 120 from being lit accidentally. When the indicator light 120 needs to be lit, the light control unit 250 controls the first MOS transistor M0 to be turned on, and at the same time, the light control unit 250 outputs a low-level enable signal, so that the charge and discharge of the first capacitor C1 is affected by the clock signal period. The indicator light 120 is periodically controlled so that the indicator light 120 turns on and off periodically. In this embodiment, the first MOS transistor M0 can be an NMOS transistor or a PMOS transistor. In this embodiment, it is an NMOS transistor. The first end of the first MOS transistor M0 is the source, and the second end of the first MOS transistor M0 is the source. is the drain. Furthermore, in order to control the current flowing through the indicator light 120, a current limiting resistor Rx is connected in series on the branch where the first MOS tube M0 and the indicator light 120 are located. The current limiting resistor Rx can be located between the first MOS tube M0 and the indicator light 120. , the current limiting resistor Rx can also be located between the indicator light 120 and the first end of the first capacitor C1, and the current limiting resistor Rx can also be located between the first MOS transistor M0 and the power ground terminal GND.

In this embodiment, the system control circuit 200 also includes a status detection unit (not shown in the figure). The status detection unit is, for example, a smoking detection unit, a charging detection unit, and other units related to whether the indicator light 120 needs to be lit. When When the smoking detection unit is used, the smoking detection unit is electrically connected to the airflow sensor 140 such as a microphone or a MEMS sensor. The status detection unit is electrically connected to the light control unit 250. When the status detection unit detects that the user is smoking the electronic atomization device or the electronic atomization device is charging, the status detection unit outputs a signal to the light control unit 250, and the light control unit 250 outputs The signal is sent to the first MOS transistor M0 and the logic control unit 240 to control the indicator light 120 to light up, that is, the light control unit 250 receives the output signal of the status detection unit to control whether the indicator light 120 is lit.

In this embodiment, please refer to Figure 1, Figure 18 and Figure 19 in conjunction. The system control circuit 200 is located on the same chip. The power supply terminal BAT is the power supply pin, and the power ground terminal GND is the power ground pin. The chip It also includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3, wherein the first light-emitting pin FG1 is used to communicate with the first end of the first capacitor C1 and the first end of the indicator light 120. For electrical connection, the second light-emitting pin FG2 is used to be electrically connected to the second end of the first capacitor C1, and the third light-emitting pin FG3 is used to be electrically connected to the second end of the indicator light 120 and the first MOS tube M0. In this embodiment, the chip also includes an airflow detection pin SW and an atomization pin AT. The airflow detection pin SW is electrically connected to an airflow detection element. The airflow detection element is, for example, an airflow sensor 140. The airflow sensor 140 is, for example, a capacitive microphone. head, switch microphone, MEMS sensor, etc., the air flow detection pin SW is electrically connected to the status detection unit, through the status detection unit and the air flow sensor 140, it can be detected whether the electronic atomization device is smoked, the atomization pin AT is used to communicate with The heating wire 130 is electrically connected. In addition, in other embodiments of the present application, the first capacitor C1 can also be integrated on the chip, and in this case, there is no need to provide the second light-emitting pin FG2. In addition, in other embodiments of the present application, the chip can also integrate the airflow sensor 140 , that is, the airflow sensor 140 and the system control circuit 200 are located on the same chip. In addition, in other embodiments of the present application, please refer to Figure 4 and Figure 20. The chip also includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3, wherein the first light-emitting pin The pin FG1 is used for electrical connection with the first terminal of the first capacitor C1 and the first terminal of the first MOS transistor M0, the second light-emitting pin FG2 is used for electrical connection with the second terminal of the first capacitor C1, and the third light-emitting pin The pin FG3 is used to be electrically connected to the second end of the first MOS transistor M0 and the first end of the indicator light 120. The second end of the indicator light 120 is electrically connected to the power ground pin GND.

In addition, in other embodiments of the present application, please refer to Figure 21. The switch control unit may not include the second drive unit and the third drive unit. The control end of the second switch unit and the control end of the third switch unit are both connected to The logic control unit is electrically connected. Wherein, the logic control unit includes an OR gate 243, wherein the first input end of the OR gate 243 is connected to the clock signal CLK, the second input end of the OR gate 243 is connected to the enable signal, and the output end of the OR gate 243 is connected to the first The drive unit, the control terminal of the second switch unit K2, and the control terminal of the third switch unit K3 are electrically connected.

Generally speaking, since the voltage range of the low-voltage power supply 110 is relatively large, when the voltage of the low-voltage power supply 110 is relatively high, for example, when the voltage of the low-voltage power supply 110 is higher than 3V, after the first capacitor C1 is charged, the switch control unit controls the second switch When the unit K2 is turned on and the first switching unit K1 and the third switching unit K3 are turned off, the voltage at the second end of the first switching unit K1 is twice the voltage of the power supply 110 and is higher than 6V. When the switch control unit When controlling the first switch unit K1 to prepare to turn on, since the control terminal of the first switch unit K1 quickly drops to 0V, it takes a certain time for the first switch unit K1 to turn on, and due to the existence of the first capacitor C1, the first switch unit K1 It is not turned on yet, and at this time, the voltage between the control terminal and the second terminal of the first switch unit K1 is higher than 6V. Generally, in order to reduce costs, the first switch unit K1 is manufactured through a low-voltage process of less than or equal to 6V. The first switching element made with a low-voltage process has a pressure-bearing capacity lower than 6V. When the voltage it withstands is higher than 6V, its reliability will be reduced, resulting in the first switching unit K1 being turned on and conducting. When the voltage span between the control terminal and the second terminal is larger than 6V, the first switch unit K1 may be damaged. In other embodiments of the present application, when the first switch unit K1 is an NMOS, the first switch unit K1 is generally connected to a voltage of 0V to turn off the first switch unit K1. After that, when the second end of the first switch unit K1 is raised to When the voltage of the power supply 110 is twice that of the power supply 110 , the voltage span between the control terminal of the first switch unit K1 and its second terminal is relatively large, which may also cause damage to the first switch unit K1 . Moreover, when the first switch unit K1 is turned off, a voltage spike will occur. If the voltage of the low-voltage power supply 110 is relatively high and is boosted by the first capacitor C1, the voltage spike will also be boosted, because the voltage of the power supply 110 is relatively high. , the voltage spike will be higher after boosting, and the voltage spike may exceed 9V, which may easily cause damage to the first switch unit K1 and the indicator light 120. In addition, when the voltage of the ordinary power supply 110 or the low-voltage power supply 110 is high, the voltage is still boosted at this time. The voltage boosting will reduce the efficiency and energy efficiency, and the voltage boosting is more likely to cause damage to the first switch unit K1 or damage to other components. In order to solve this problem, this application provides a seventh embodiment.

Seventh embodiment

Please refer to Figure 22. Figure 22 is a circuit module diagram of the system control circuit 200 of the seventh embodiment of the present application. This embodiment is similar to the sixth embodiment, so the parts not described in this embodiment can refer to the sixth embodiment. The main difference between this embodiment and the sixth embodiment is that it also includes a voltage judgment unit.

Please refer to Figure 22. In this embodiment, the system control circuit 200 also includes a voltage judgment unit 260. The voltage judgment unit 260 is electrically connected to the first end and the second end of the first MOS transistor M0 to obtain the first MOS transistor M0. The voltage of the first terminal and the voltage of the second terminal of the tube M0. In this embodiment, the voltage judgment unit 260 may include one input terminal or two input terminals. When one input terminal is included, the input terminals are both connected to the first MOS. The first and second ends of the tube M0 are electrically connected, and the voltages at the first and second ends of the first MOS tube M0 can be obtained through time sharing, and then the voltage difference can be obtained; when two input terminals are included, two The input terminal is electrically connected to the first terminal and the second terminal, so that the voltage of the first terminal and the voltage of the second terminal of the first MOS transistor M0 can be obtained, and the voltage judgment unit 260 can obtain the voltage difference. When the first MOS transistor M0 is turned on, the voltage judgment unit 260 is used to determine whether the voltage difference is greater than or equal to the first reference voltage. The voltage difference is the voltage difference Vdv between the first end and the second end of the first MOS transistor M0, also It can be proportional to the voltage difference Vdv between the first end and the second end of the first MOS transistor M0, that is, K*Vdv, where K is a positive number less than 1. When the voltage determination unit 260 determines that the voltage difference is greater than or equal to the first reference voltage, the system control circuit 200 operates in the first mode. When the voltage determination unit 260 determines that the voltage difference is less than the first reference voltage, the system control circuit 200 operates in the second mode. In this embodiment, the voltage at the power supply terminal BAT in the first mode is directly used to drive the indicator light 120 without boosting the voltage at this time. The voltage at the power supply terminal BAT in the second mode is boosted and used to drive the indicator light 120 . 120.

In this embodiment, please refer to Figures 22 and 23 in conjunction with each other. The voltage judgment unit 260 includes a voltage comparison unit 261. The first input end of the voltage comparison unit 261 is electrically connected to the first end of the first MOS transistor M0. The voltage comparison unit The second input terminal of 261 is electrically connected to the second terminal of the first MOS transistor M0. The voltage comparison unit 261 obtains the voltage of the first input terminal and the second input terminal and performs subtraction calculation to obtain the voltage difference, and then compares it with the internally preset first The system control circuit 200 operates in the first mode when the voltage comparison unit 261 determines that the voltage difference is greater than or equal to the first reference voltage. When the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage, the system control circuit 200 operates in the first mode. Second mode.

When the light control unit 250 controls the indicator light 120 to light up, generally speaking, when the voltage of the power supply terminal BAT is relatively large, for example, greater than or equal to 3V, the indicator light 120 will be turned on at this time, and the indicator light 120 will be driven. On, there is current on the line where the indicator light 120 and the first MOS tube M0 are located. At this time, the voltage difference on the first MOS tube M0 will be greater than or equal to the first reference voltage; when the voltage of the power supply terminal BAT is relatively small, for example When it is less than 3V, the voltage of the power supply terminal BAT cannot drive the indicator light 120. The indicator light 120 will not be driven to conduct, and the indicator light 120 is disconnected. Therefore, when the first MOS tube M0 is turned on, its first terminal , the voltages at the second terminal are equal or the difference will be relatively small, and the voltage difference of the first MOS transistor M0 will be smaller than the first reference voltage. This embodiment uses this characteristic to determine whether the voltage provided by the power supply can drive the indicator light 120 . In this embodiment, the range of the first reference voltage is generally 80mV-150mV, such as 80mV, 90mV, 100mV, 110mV, 120mV, 130mV, 140mV, 150mV, etc., preferably 100mV.

In this embodiment, the voltage judgment unit 260 also includes a flip-flop 262 and an inverter 263. The first input end of the flip-flop 262 is electrically connected to the output end of the voltage comparison unit 261, and the second input end of the flip-flop 262 is connected to the light. Control unit 250 Electrically connected, the output terminal of the flip-flop 262 (for example, the Q NOT terminal) is electrically connected to the fourth input terminal of the first logic gate 241 via the inverter 263, and the voltage judgment unit 260 can control the second switch unit K2 to remain off.

Specifically, when the voltage difference is higher than or equal to the first reference voltage, the voltage comparison unit 261 outputs the first signal so that the system control circuit 200 operates in the first mode. At this time, the output of the flip-flop 262 passes through the inverter. 263 outputs a high level (digital signal 1) to the first logic gate 241. The first switch unit K1 is always on, and the second switch unit K2 is always off. At this time, the voltage of the power supply terminal BAT directly drives the indicator light 120. In this embodiment, the first switch unit K1 is included in the first power supply unit, and the first power supply unit is used to drive the voltage of the power supply terminal BAT to the indicator light 120 without boosting the voltage. When the voltage difference is less than the first reference sub-voltage, the voltage comparison unit 261 outputs a second signal so that the system control circuit 200 operates in the second mode. At this time, the output of the flip-flop 262 outputs a low level (digital level) via the inverter 263 Signal 0) is given to the first logic gate 241. During the first time period, the clock signal is high level. During this time period, the clock signal controls the first switching unit K1 and the third switching unit K3 to be turned on, and the second switching unit K2 is turned off. The first capacitor C1 is charged, and the clock signal is low level during the second period. During this period, the clock signal drives the first switch unit K1 and the third switch unit K3 to turn off, and the second switch unit K2 is turned on, the potential of the first end of the first capacitor C1 is raised, the first capacitor C1 supplies power to the indicator light 120, and the indicator light 120 is lit. In this embodiment, the first switch unit K1 and the second switch unit K2 Included in the second power supply unit, the second power supply unit is used to boost the voltage of the power supply terminal BAT, so that the boosted voltage drives the indicator light 120. In this embodiment, the second power supply unit includes the first power supply unit . In this embodiment, one cycle of the clock signal includes a first time period and a second time period. The clock signal is a periodic pulse signal. The indicator light 120 follows the clock signal to perform periodic brightening and darkening. Since the frequency of the clock signal is high, , so the human eye cannot distinguish the bright and dark flashing of the indicator light 120 . In this embodiment, the first signal is low level (digital signal 0), and the second signal is high level (digital signal 1). However, the present application is not limited to this. In other embodiments of the present application, the first signal is high level and the second signal is low level. High level and low level can be converted by adding an inverter as needed. In this embodiment, darkening of the indicator light 120 may mean that the indicator light 120 is turned off, or it may mean that the brightness of the indicator light 120 is low, which is lower than the brightness of the indicator light 120 being on.

In this embodiment, the first input terminal of the voltage comparison unit 261 is a non-directional terminal, and the second input terminal of the voltage comparison unit 261 is a reverse terminal. However, the application is not limited thereto. In other embodiments of the application, The first input terminal may also be the reverse terminal of the voltage comparison unit 261 , and the second input terminal may be the non-directional terminal of the voltage comparison unit 261 . In addition, in other embodiments of the present application, the second power supply unit may not include the first power supply unit. In this case, the first power supply unit includes a fifth switch unit, and the control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply terminal BAT, and the second end of the fifth switch unit is used to be electrically connected to the indicator light 120. The switch control unit includes a fifth drive unit, and the output end of the fifth drive unit is connected to the fifth drive unit. The control terminals of the five switch units are electrically connected, and the input terminal of the fifth drive unit is electrically connected to the logic control unit 240, the first drive unit 210, the second drive unit 220 or the third drive unit 230. The specific circuit of the fifth drive unit can be Referring to the first driving unit 210, which will not be described in detail here; the second power supply unit includes a first boost unit, the first end of the first boost unit is electrically connected to the power supply terminal BAT, and the second end of the first boost unit is used to connect to the indicator light. 120 or the first end of the first MOS transistor M0 is electrically connected, and the control end of the first boost unit is electrically connected to the switch control unit. The first boost unit includes a second switch unit K2 and a first switch unit K1, where the The first end of the second switch unit K2 and the first end of the first switch unit K1 are both electrically connected to the power supply terminal BAT, and the second end of the first switch unit K1 is used to connect to the first end of the first capacitor C1 and the indicator light. 120 is electrically connected, the control end of the first switch unit K1 is electrically connected to the switch control unit, the control end of the second switch unit K2 is electrically connected to the switch control unit, and its second end is used to electrically connect with the second end of the first capacitor C1 connection, and its second end is also indirectly electrically connected to the power supply ground terminal GND. In the second mode, in the first time period, the switch control unit controls the first switch unit K1 to turn on and the second switch unit K2 to turn off to charge the first capacitor C1, and in the second time period, the switch control unit controls the second switch unit K2 is turned on and the first switch unit K1 is turned off so that the potential of the first end of the first capacitor C1 is raised for driving the indicator light 120. In the second mode, the fifth switch unit remains normally turned off; in the first mode, the fifth switch unit K1 is turned off. The first switch unit K1 and the second switch unit K2 remain normally off, and the fifth switch unit remains normally on. In addition, in other embodiments of the present application, the first boost unit is not limited to the above circuit, and the first boost unit may also be a boost circuit, etc.

In an illustrative example of this embodiment, when the light control unit 250 controls the indicator light 120 to light up, the voltage is not boosted first, the first MOS transistor M0 is turned on, and the voltage comparison unit 261 compares the voltage on the first MOS transistor M0 To judge based on the difference, When the voltage comparison unit 261 determines that the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit 261 outputs the first signal to the flip-flop 262. When the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage, the voltage comparison unit 261 outputs The second signal is given to the flip-flop 262. In the example, the first signal is low level and the second signal is high level. The other input end of the flip-flop 262 receives the light-on signal from the light-on control unit 250. The light-on signal is low level. flat, when the flip-flop 262 receives the first signal, the flip-flop 262 maintains the original output (the output when the light on control unit 250 controls the light off) via the inverter 263, and when the flip-flop 262 receives the second signal, the flip-flop 262 The inverter 262 continues to output the second driving signal to the first logic gate 241 through the inverter 263. The second driving signal is low level, so that the first logic gate 241 is controlled by the clock signal, and the voltage of the power supply terminal BAT is boosted. It is then used to drive the indicator light 120. When the light control unit 250 controls the indicator light 120 to extinguish, the light control unit 250 outputs an extinguishing signal to the flip-flop 262. The extinguishing signal is high level, and the flip-flop 262 continues to output the first driving signal to the first driving signal via the inverter 263. A logic gate 241, the first driving signal is high level, so the first logic gate 241 outputs a low level, and then the first switch unit remains on, the second switch unit remains off, and the system control circuit 200 works in the first model. In this example, flip-flop 262 is an RS flip-flop, which is composed of a NOR gate. In other illustrations of this embodiment, the RS flip-flop can also be composed of a NAND gate, and the signal is changed accordingly. Moreover, in this embodiment, when the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120, the voltage comparison unit 261 changes from outputting the second signal to outputting the first signal. Since the first signal is low level (digital signal 0), so the flip-flop 262 still maintains the original output via the inverter 263, so the voltage of the power supply terminal BAT is still boosted for driving the indicator light 120, that is, it still works in the second mode, there will be no situation where the voltage is not boosted (the power supply terminal BAT is directly driven), that is, when the light control unit 250 controls the light to turn on, when the voltage judgment unit 260 determines that the voltage needs to be boosted, the voltage comparison unit is subsequently ignored. 261, the power supply terminal BAT keeps boosting until the light turns on and the control unit 250 controls the light to turn off. Then when it lights up again, it needs to be judged whether the voltage needs to be boosted.

In another example, when the voltage of the power supply terminal BAT changes from high to low, the voltage comparison unit 261 previously outputs the first signal, and then due to the consumption of power, the voltage of the power supply terminal BAT will decrease. When When the voltage difference of the first MOS transistor M0 is reduced to less than the first reference voltage, the voltage comparison unit 261 outputs a second signal, which is a high level, and the flip-flop 262 outputs a high level through the inverter 263 becomes low level, so that the first logic gate 241 (NOR gate) is controlled by the clock signal, and the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120 .

In this embodiment, the first end of the first MOS transistor M0 is a source, the second end of the first MOS transistor M0 is a drain, and the first MOS transistor M0 is a PMOS transistor. However, the present application is not limited to this. In other embodiments of the present application, the first MOS transistor M0 may also be an NMOS transistor. In this embodiment, the first MOS transistor M0 is electrically connected to the lighting control unit 250, and the lighting control unit 250 is used to control whether the first MOS transistor M0 is turned on.

Specifically, in this embodiment, the system control circuit 200 includes a current source. Please refer to FIGS. 22 to 24 in conjunction. The current source includes a first MOS transistor M0, and the current source also includes a fifth PMOS transistor PM5 and a sixth PMOS transistor. PM6, the fifth NMOS transistor NM5, and the constant current source DC. The sources of the fifth PMOS transistor PM5 and the sixth PMOS transistor PM6 are both electrically connected to the source of the first MOS transistor M0. The control terminal of the fifth PMOS transistor PM5 They are respectively electrically connected to the control terminal of the first MOS transistor M0, the drain of the sixth PMOS transistor PM6, and the drain of the fifth PMOS transistor PM5. The drain of the fifth PMOS transistor PM5 is electrically connected to the drain of the fifth NMOS transistor NM5. , the source of the fifth NMOS transistor NM5 is electrically connected to one end of the constant current source DC, and the other end of the constant current source DC is connected to ground. The control end of the fifth NMOS transistor NM5 and the control end of the sixth PMOS transistor PM6 are both connected to the light control unit. 250 is electrically connected, and the light control unit 250 can control whether the first MOS tube M0 is turned on. For example, when the light control unit 250 controls the indicator light 120 to turn off, the light control unit 250 controls the sixth PMOS transistor PM6 to be turned on and the fifth NMOS transistor NM5 to be turned off, so that the fifth PMOS transistor PM5 and the first MOS transistor M0 are turned off. off, the current source does not work. When the light control unit 250 controls the indicator light 120 to light up, the light control unit 250 controls the sixth PMOS transistor PM6 to turn off and the fifth NMOS transistor NM5 to turn on, so that the fifth PMOS transistor PM5 , the first MOS tube M0 is turned on, and the current source works normally. In this embodiment, the first MOS transistor M0 operates in the saturation region when it is turned on. In addition, in other embodiments of the present application, the first MOS transistor M0 may not be used as a part of the current source, but the first MOS transistor M0 may be used as a switch. At this time, the first MOS transistor M0 operates in the linear region.

In addition, the first MOS transistor M0 is not limited to being electrically connected to the power supply terminal BAT. In other embodiments of the present application, please refer to Figure 25. Figure 25 is similar to Figure 23. The main difference is that the first terminal of the first MOS transistor M0 It is electrically connected to the ground terminal of the power supply, and the second terminal of the first MOS transistor M0 is connected in series with the indicator light 120. Its functions and functions are similar to the previous ones and will not be described again here. In an illustrative example, when the light control unit 250 controls the indicator light 120 to light up, the light control unit 250 controls the first MOS transistor M0 to turn on, and the voltage comparison unit 261 determines the voltage difference on the first MOS transistor M0, When the voltage comparison unit 261 determines that the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit 261 outputs the first signal to the flip-flop 262. When the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage, the voltage comparison unit 261 outputs The second signal is given to the flip-flop 262. In the example, the first signal is low level (digital signal 0), and the second signal is high level (digital signal 1). The other input end of the flip-flop 262 receives the light control unit. 250, the light on signal is low level (digital signal 0). When the flip-flop 262 receives the first signal, the flip-flop 262 maintains the original output via the inverter 263 (the light on control unit 250 controls the output, that is, the first driving signal), when the flip-flop 262 receives the second signal, the flip-flop 262 continues to output the second driving signal to the NOR gate (the first logic gate 241) via the inverter 263, and the second driving signal The signal is low level (digital signal 0), so the NOR gate is controlled by the clock signal, and the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120 . When the light control unit 250 controls the indicator light 120 to extinguish, the light control unit 250 outputs an extinguishing signal to the flip-flop 262. The extinguishing signal is high level (digital signal 1), and the flip-flop 262 continues to output the third signal through the inverter 263. A driving signal is given to the NOR gate, and the first driving signal is high level (digital signal 1), so the output of the NOR gate is low level, and the first switching unit remains off and the second switching unit remains on. In this example, flip-flop 262 is an RS flip-flop, which is composed of a NOR gate. In other illustrations of this embodiment, the RS flip-flop can also be composed of a NAND gate, and the signal is changed accordingly. Moreover, in this embodiment, when the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120, the voltage comparison unit 261 changes from outputting the second signal to outputting the first signal. Since the first signal is low level, so that the flip-flop 262 still maintains the original output (digital 0 signal) after passing through the inverter 263, so the voltage of the power supply terminal BAT is still boosted to drive the indicator light 120, and neither occurs nor rises. In the case of voltage, that is, when the light control unit 250 controls the light to turn on, and the voltage judgment unit 260 determines that the voltage needs to be boosted, then regardless of the output of the voltage comparison unit 261, the power supply terminal BAT keeps boosting until the light turns on. The control unit 250 controls the light to turn off.

This embodiment adds a voltage judgment unit 260, which has the following advantages:

1. When the voltage of the power supply 110 is relatively large, the voltage of the power supply 110 is sufficient to drive the indicator light 120 and the brightness is relatively bright. At this time, the voltage judgment unit 260 judges that the voltage difference is greater than or equal to the first reference voltage, and the voltage judgment unit 260 controls the system. The control circuit 200 works in the first mode. In the first mode, the indicator light 120 is directly driven by the voltage of the power supply terminal BAT without the need for voltage boosting, which is beneficial to improving the energy utilization rate of the power supply 110 . Moreover, when the voltage of the power supply 110 is relatively low, and the voltage judgment unit 260 judges that the voltage difference is less than the first reference voltage, the voltage judgment unit 260 controls the system control circuit 200 to work in the second mode. In the second mode, the power supply terminal BAT After the voltage is raised, it is used to drive the indicator light 120, so that even if the voltage of the power supply 110 is relatively low, the indicator light 120 can be normally lit after boosting, and the brightness is relatively bright, which is conducive to the normal use of the indicator light 120, and the indicator light 120 will not appear. The problem of getting darker and darker during use.

2. The power supply voltage range provided by the power supply of the electronic atomization device in this embodiment includes 1.5V-5V. For example, the power supply voltage range provided by the power supply is 1.5V-3.6V, 2.5V-4.2V or 3V-5V, that is, The power supply can use either low-voltage power supply 110 or ordinary power supply 110, that is, the power supply 110 can be mixed, which facilitates the assembly of the electronic atomization device, and there is no need to set corresponding system control circuits 200 according to different power supplies 110. In this embodiment The system control circuit 200 is universal, which can enhance the market competitiveness of the system control circuit 200 . When the electronic atomization device uses the ordinary power supply 110 and the voltage is not too low, the voltage judgment unit 260 judges that the voltage difference on the first MOS transistor M0 is greater than the first reference voltage, and the voltage judgment unit 260 controls the system control circuit 200 to work. In the first mode, the indicator light 120 is directly driven by the voltage of the power supply terminal BAT. At this time, the indicator light 120 is directly driven by the power supply 110 and does not need to be boosted; when the electronic atomization device uses a low-voltage power supply 110 and the voltage is not too high, When high, when the voltage judgment unit 260 judges that the voltage difference is less than the first reference voltage, the voltage judgment unit 260 controls the system control circuit 200 to work in the second mode. In the second mode, the voltage of the power supply terminal BAT is boosted for use. The driving indicator light 120 lights up, and the brightness is about the same as when the ordinary power supply 110 is used. Therefore, the electronic atomization device of this embodiment can be used with two specifications of power supply 110. No matter which power supply 110 is used, the electronic atomization device will not be damaged, and the indicator light 120 can also work normally.

3. The output end of the voltage comparison unit 261 of this embodiment is electrically connected to the flip-flop 262. After the voltage is boosted in the second mode, due to the existence of the flip-flop 262, the boost can be maintained, and the voltage comparison unit after boosting will not appear. 261 determines that the voltage difference is greater than or equal to the first reference voltage, causing the problem of returning to the first mode, thereby avoiding the problem of the indicator light 120 flickering on and off due to switching back and forth between the second mode and the first mode.

4. In this embodiment, the first switch unit K1 is a MOS tube. MOS tubes are generally manufactured using a low-voltage process of less than or equal to 6V (high-voltage process costs are higher), which is beneficial to reducing costs. MOS tubes produced by low-voltage processes Its withstand voltage value is relatively low. When the voltage of the power supply 110 is relatively high, if the voltage is still boosted, for example, to twice the voltage of the power supply 110, then in some time periods or moments, the control end of the first switching unit K1, the The voltage between the two ends will be relatively large, exceeding the limit parameters of the MOS tube, which may cause damage to the first switching unit K1. In this embodiment, by setting the voltage judgment unit 260, when the voltage difference is relatively high and is greater than or equal to the first reference voltage, the voltage is not boosted. When the voltage difference is relatively low and is less than the first reference voltage, the voltage is boosted. The boosted voltage (generally Lower than 6V) is also lower than the withstand voltage value of the MOS tube, so the two terminals of the first switch unit K1 will not bear a relatively large voltage, the first switch unit K1 will not be easily damaged, and the reliability will not be reduced. At the same time, it can Normal driving indicator light 120. Moreover, the voltage spike that the first switch unit K1 endures when it is turned off will be relatively small, and the first switch unit K1 and the indicator light 120 are not easily damaged.

Eighth embodiment

An embodiment of the present application provides an electronic atomization device. The electronic atomization device is, for example, an electronic cigarette. Please refer to Figure 1. The electronic atomization device includes an indicating component, a heating wire 130, and an airflow sensor 140. The indicating component includes a power supply 110 and an indicator light. 120. System control circuit 200, first capacitor C1. Among them, the system control circuit 200 is electrically connected to the power supply 110, the indicating component, the heating wire 130, the air flow sensor 140, etc. respectively. In this embodiment, the power supply 110 includes a battery cell. The power supply 110 is a low-voltage power supply. The power supply voltage range it provides includes 1.5V-3.6V. For example, the power supply voltage range it provides is 1.5V-3.6V, 1.6V- 3.6V, 1.5V-3.4V, 1.8V-3.5V, 2.1V-3.6V, 2V-3V, etc., their nominal voltage is lower than or equal to 3V, the nominal voltage is generally 2.5V-2.9V, for example, 2.7 V, 2.8V. The indicator light 120 is, for example, an LED light. The LED light is, for example, a white LED light and/or a blue LED light. The forward voltage range of these LED lights is generally 2.5V-3.6V, such as 3V. The voltage for driving the LED light is only Only when the forward voltage is greater than the forward voltage can the LED light be lit. The airflow sensor 140 is, for example, a MEMS sensor or a microphone.

Please refer to FIG. 1 and FIG. 26 in combination. In this embodiment, the system control circuit 200 includes a power supply terminal BAT, a power ground terminal GND, a switch control unit, a first switch unit K1 and a second switch unit K2.

In this embodiment, during the first time period, the switch control unit controls the first switch unit K1 to turn on and the second switch unit K2 to turn off. At this time, the power supply 110 supplies power to the first capacitor C1 through the power supply terminal BAT and the first switch unit K1. Charging, since the conduction voltage drop (less than 0.1V) of the first switching unit K1 is negligible, the voltage on the first capacitor C1 is charged to the same voltage as the power supply 110, assuming that the voltage of the power supply 110 is Vbat, in the second time period The switch control unit controls the second switch unit Element K2 is turned on and the first switching unit K1 is turned off. Since the turn-on voltage drop (less than 0.1V) of the second switching unit K2 is negligible, the voltage at the second end of the second switching unit K2 is the voltage of the power supply 110, also is Vbat, that is, the voltage at the second end of the first capacitor C1 is Vbat. Since the voltage on the first capacitor C1 cannot mutate, the potential at the first end of the first capacitor C1 is raised to Vbat+Vbat, which is 2Vbat, that is is twice the voltage of the power supply 110, so that even if the power supply 110 is a low-voltage power supply, the voltage working range of the low-voltage power supply 110 is 1.5V-3.6V, and twice the voltage range of Vbat is 3V-7.2V, even if the low-voltage power supply 110 works at The lowest value of the working range is 1.5V, and twice the Vbat is 3V, which is also greater than or equal to the minimum forward voltage of the indicator light 120. Therefore, the indicator light 120 can be normally driven by the low-voltage power supply 110, and the indicator light 120 can operate on the entire low-voltage power supply. Works normally within the working range of 110. Moreover, in this embodiment, the charging of the first capacitor C1 is controlled by the first switch unit K1. Since the conduction voltage drop of the first switch unit K1 is almost negligible, the conduction voltage drop of the diode cannot be ignored (generally 0.7V), this embodiment greatly improves the voltage range in which the low-voltage power supply 110 can drive the indicator light 120. The indicator light 120 can work normally within the entire working range of the low-voltage power supply 110, and the indicator light 120 is brighter when driven. , the user experience is better; furthermore, this embodiment uses the first switch unit K1 to control whether to charge the first capacitor C1 and whether to boost the voltage to drive the indicator light 120. The first switch unit K1 is a controllable element, which is convenient for control. In addition, in other embodiments of the present application, the first switch unit K1 can also be replaced by a diode. The anode of the diode is electrically connected to the power supply terminal, and the cathode of the diode is used to be electrically connected to the first end of the first capacitor C1. This When the second switch unit is turned on, the voltage is boosted. When the second switch unit is turned off, the voltage is not boosted and the diode is turned on.

Specifically, please refer to Fig. 1, Fig. 26 and Fig. 27. The first driving unit 210 includes an inverter (the inverter is also called a NOT gate) 211, a first NMOS transistor NM1, a second NMOS transistor NM2, a first PMOS transistor PM1 and second PMOS transistor PM2, wherein the input end of the inverter 211 is electrically connected to the control end of the second switching unit K2, and the output end of the inverter 211 is electrically connected to the control end of the first NMOS transistor NM1, The source of the first NMOS transistor NM1 is electrically connected to the power ground terminal GND. The drain of the first NMOS transistor NM1 is electrically connected to the drain of the first PMOS transistor PM1 and the control end of the second PMOS transistor PM2 respectively. The first PMOS transistor The control terminal of PM1 is electrically connected to the drain of the second NMOS transistor NM2, the source of the first PMOS transistor PM1 is electrically connected to the first terminal of the first capacitor C1, and the source of the second NMOS is electrically connected to the power ground terminal GND. The control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit K2, the drain of the second NMOS transistor NM2 is also electrically connected to the drain of the second PMOS transistor PM2, and the source of the second PMOS transistor PM2 is electrically connected to the first The first end of the capacitor C1 is electrically connected, and the drain of the second NMOS transistor NM2 is also used to control whether the first switch unit K1 is turned on. In this embodiment, the drain of the second NMOS transistor NM2 is directly electrically connected to the control terminal of the first switch unit K1, but this application is not limited to Here, in other embodiments of the present application, in order to improve the driving capability, multiple inverters 211 may be provided between the drain of the second NMOS transistor NM2 and the control terminal of the first switching unit K1 , for example, two inverters 211 may be provided. , 4, and 6 inverters 211. The inverters 211 are composed of, for example, CMOS tubes. In addition, in other embodiments of the present application, when the first switch unit K1 is an NMOS tube, the first drive unit 210 also includes a second boost circuit, and the second boost circuit is used to drive the first switch unit K1 is turned on, the boosted voltage of the second boost circuit is greater than the voltage of the power supply 110; the second boost circuit can be a conventional boost circuit in the field, such as a boost circuit, etc., which will not be described again here.

In order to drive the second switch unit K2 and the third switch unit K3, in this embodiment, please continue to refer to Fig. 1, Fig. 26 and Fig. 27. The switch control unit includes a second driving unit 220 and a third driving unit 230. The second driving unit 220 is electrically connected to the control terminal of the second switch unit K2, and the third driving unit 230 is electrically connected to the control terminal of the third switch unit K3.

In this embodiment, the system control circuit also includes a clock signal generation unit and a light control unit 250. The light control unit 250 is used to control whether the indicator light 120 emits light. The clock signal generation unit is used to generate a clock signal. The operation of the clock signal generation unit is The energy end is electrically connected to the light control unit 250. When the light control unit 250 is used to control the indicator light 120 to light The light-on control unit 250 controls the clock signal generation unit to work to generate a clock signal. When the light-on control unit 250 is used to control the indicator light 120 to go out, the light-on control unit 250 controls the clock signal generation unit to stop working. This arrangement is beneficial to reducing the cost of the clock signal generation unit. of power consumption.

In order to effectively control whether the indicator light 120 is lit and prevent the indicator light 120 from being lit when it does not need to be lit, in this embodiment, please continue to refer to Figures 1, 26 and 27. The system control circuit 200 also includes a third There are four switch units K4. The fourth switch unit K4 is connected in series with the indicator light 120. In this embodiment, the second end of the fourth switch unit K4 and the second end of the indicator light 120 are electrically connected through the current limiting resistor Rx. The fourth switch The first end of the unit K4 is electrically connected to the power ground terminal GND. The control end of the fourth switch unit K4 is controlled by the light control unit 250. The light control unit 250 is used to control whether the fourth switch unit K4 is turned on. Only in the fourth The indicator light 120 can emit light only when the switch unit K4 is turned on. The light control unit 250 will control the fourth switch unit K4 to turn on only when the indicator light 120 needs to be lit. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the indicator light 120 and the fourth switch unit K4 are located. In addition, in other embodiments of the present application, please refer to FIGS. 28 and 29 , the fourth switch unit K4 may also be located between the indicator light 120 and the second end of the first switch unit K1 . Specifically, the fourth switch unit K4 The first end of the unit K4 is electrically connected to the first end of the first switch unit K1. The second end of the fourth switch unit K4 is electrically connected to the first end of the indicator light 120 via the current limiting resistor Rx. The second end of the indicator light 120 terminal is electrically connected to the power ground terminal GND, and the control terminal of the fourth switch unit K4 is electrically connected to the light control unit 250. Here, the fourth switch unit K4 is a PMOS tube, and the fourth switch unit K4 is used as a switching element. It usually works in the linear region of the MOS tube. In addition, in other embodiments of the present application, the fourth switch unit K4 can also be included in the current source. In this case, the current source is connected in series with the indicator light 120, and the control end of the current source is electrically connected to the light control unit 250. The light control unit 250 controls whether the current source is working. Only when the current source is working, the fourth switch unit K4 is turned on, and the indicator light 120 can be lit. When the light control unit 250 controls the current source not working, the fourth switch unit K4 is turned off. The indicator light 120 does not emit light. At this time, the first MOS transistor works in the saturation region of the MOS transistor when it is turned on. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the fourth switch unit K4 and the indicator light 120 are located.

Please continue to refer to Figure 27. In this embodiment, the light control unit 250 is used to output an enable signal, that is, the light control unit 250 is electrically connected to the second input terminal of the first logic gate 241. When the indicator light 120 does not need to be lit, When it is on, the light control unit 250 controls the fourth switch unit K4 to turn off. At the same time, the light control unit 250 outputs a high-level enable signal. The first switch unit K1 and the third switch unit K3 are normally on. The second switch unit K2 is normally turned off, so that the first capacitor C1 is charged. At this time, even if the fourth switch unit K4 misleads the indicator light 120 to turn on, it will not be lit, forming a double mechanism to prevent the indicator light 120 from being accidentally lit. When the indicator light 120 needs to be lit, the light control unit 250 controls the fourth switch unit K4 to be turned on, and at the same time, the light control unit 250 outputs a low-level enable signal, so that the charge and discharge of the first capacitor C1 is affected by the clock signal period. The indicator light 120 is periodically controlled so that the indicator light 120 turns on and off periodically. In this embodiment, the fourth switching unit K4 can be an NMOS tube or a PMOS tube. In this embodiment, it is an NMOS tube. The first terminal of the fourth switching unit K4 is a source, and the second terminal of the fourth switching unit K4 is a source. is the drain. Moreover, in order to control the current flowing through the indicator light 120, a current-limiting resistor Rx is connected in series on the branch where the fourth switch unit K4 and the indicator light 120 are located. The current-limiting resistor Rx can be located between the fourth switch unit K4 and the indicator light 120. , the current limiting resistor Rx can also be located between the indicator light 120 and the first end of the first capacitor C1, and the current limiting resistor Rx can also be located between the fourth switch unit K4 and the power ground terminal GND.

In this embodiment, please refer to Figure 1, Figure 26 and Figure 27 in conjunction. The system control circuit 200 is located on the same chip. The power supply terminal BAT is the power supply pin, and the power ground terminal GND is the power ground pin. The chip It also includes a first light-emitting pin/terminal FG1, a second light-emitting pin/terminal FG2, and a third light-emitting pin/terminal FG3, wherein the first light-emitting pin FG1 is used to communicate with the first terminal and indication of the first capacitor C1. The first end of the lamp 120 is electrically connected, and the second light-emitting pin FG2 is used to communicate with the first electrical The second end of the capacitor C1 is electrically connected, and the third light-emitting pin FG3 is used to be electrically connected to the second end of the indicator light 120 and the fourth switch unit K4. In this embodiment, the chip also includes an airflow detection pin SW and an atomization pin AT. The airflow detection pin SW is electrically connected to an airflow detection element. The airflow detection element is, for example, an airflow sensor 140. The airflow sensor 140 is, for example, a capacitive microphone. head, switch microphone, MEMS sensor, etc., the air flow detection pin SW is electrically connected to the status detection unit, through the status detection unit and the air flow sensor 140, it can be detected whether the electronic atomization device is smoked, the atomization pin AT is used to communicate with The heating wire 130 is electrically connected. In addition, in other embodiments of the present application, the first capacitor C1 can also be integrated on the chip, and in this case, there is no need to provide the second light-emitting pin FG2. In addition, in other embodiments of the present application, the chip can also integrate the airflow sensor 140 , that is, the airflow sensor 140 and the system control circuit 200 are located on the same chip. In addition, in other embodiments of the present application, please refer to Figures 28 and 29. The chip also includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3, wherein the first light-emitting pin The pin FG1 is used for electrical connection with the first terminal of the first capacitor C1 and the first terminal of the fourth switch unit K4, the second light-emitting pin FG2 is used for electrical connection with the second terminal of the first capacitor C1, and the third light-emitting pin The pin FG3 is used to be electrically connected to the second end of the fourth switch unit K4 and the first end of the indicator light 120. The second end of the indicator light 120 is electrically connected to the power ground pin GND.

In addition, in other embodiments of the present application, please refer to Figure 30. The switch control unit may not include the second drive unit and the third drive unit. The control end of the second switch unit and the control end of the third switch unit are both connected to The logic control unit is electrically connected. Wherein, the logic control unit includes an OR gate 243, wherein the first input end of the OR gate 243 is connected to the clock signal CLK, the second input end of the OR gate 243 is connected to the enable signal, and the output end of the OR gate 243 is connected to the first The drive unit, the control terminal of the second switch unit K2, and the control terminal of the third switch unit K3 are electrically connected.

Generally speaking, since the voltage range of the low-voltage power supply 110 is relatively large, when the voltage of the low-voltage power supply 110 is relatively high, for example, when the voltage of the low-voltage power supply 110 is higher than 3V, after the first capacitor C1 is charged, the switch control unit controls the second switch When the unit K2 is turned on and the first switching unit K1 and the third switching unit K3 are turned off, the voltage at the second end of the first switching unit K1 is twice the voltage of the power supply 110 and is higher than 6V. When the switch control unit When controlling the first switch unit K1 to prepare to turn on, since the control terminal of the first switch unit K1 quickly drops to 0V, it takes a certain time for the first switch unit K1 to turn on, and due to the existence of the first capacitor C1, the first switch unit K1 It is not turned on yet, and at this time, the voltage between the control terminal and the second terminal of the first switch unit K1 is higher than 6V. Generally, in order to reduce costs, the first switch unit K1 is manufactured through a low-voltage process of less than or equal to 6V. The first switching element manufactured by the low-voltage process has a pressure-bearing capacity lower than 6V. When the voltage it withstands is higher than 6V, its reliability will decrease. Therefore, during the turn-on and conduction process of the first switch unit K1, if the voltage span ratio between the control terminal and the second terminal of the first switch unit K1 is greater than 6V, the first switch unit K1 may be damaged. In other embodiments of the present application, when the first switch unit K1 is an NMOS, the first switch unit K1 is generally connected to a voltage of 0V to turn off the first switch unit K1. After that, when the second end of the first switch unit K1 is raised to When the voltage of the power supply 110 is twice that of the power supply 110 , the voltage span between the control terminal of the first switch unit K1 and its second terminal is relatively large, which may also cause damage to the first switch unit K1 . Moreover, when the first switch unit K1 is turned off, a voltage spike will occur. If the voltage of the low-voltage power supply 110 is relatively high and is boosted by the first capacitor C1, the voltage spike will also be boosted, because the voltage of the power supply 110 is relatively high. , the voltage spike will be higher after boosting, and the voltage spike may exceed 9V, which may easily cause damage to the first switch unit K1 and the indicator light 120. In addition, when the voltage of the ordinary power supply 110 or the low-voltage power supply 110 is high, the voltage is still boosted at this time. The voltage boosting will reduce the efficiency and energy efficiency, and the voltage boosting is more likely to cause damage to the first switch unit K1 or damage to other components. In order to solve this problem, this application provides a ninth embodiment.

Ninth embodiment

Please refer to Figure 31. Figure 31 is a circuit module diagram of the system control circuit of the ninth embodiment of the present application. This embodiment is similar to the eighth embodiment, so the parts not described in this embodiment can refer to the eighth embodiment. This embodiment The main difference between this example and the eighth embodiment is that it also includes a voltage judgment unit.

Please refer to Figure 31. In this embodiment, the system control circuit 200 includes a light-emitting end, which is indirectly electrically connected to the power supply terminal BAT. The light-emitting end is also electrically connected to the first end of the indicator light 120. The power supply ground terminal GND is used for Directly (for example, Figure 31) or indirectly (for example, Figure 34 below) is electrically connected to the second end of the indicator light 120, and the light-emitting end can be the first light-emitting end FG1 (Fig. 34) or the third light-emitting end FG3 (Fig. 31). In this embodiment, the light-emitting end is the third light-emitting end FG3 as an example for description.

In this embodiment, the system control circuit 200 further includes a voltage judgment unit 260. The voltage judgment unit 260 is electrically connected to the third light-emitting terminal FG3 to form a first connection point. The voltage judgment unit 260 is also electrically connected to the power ground terminal GND to form a first connection point. The second connection point is used to obtain the voltage of the first connection point and the voltage of the second connection point, that is, in this embodiment, the voltage at both ends of the indicator light 120 is obtained.

In this embodiment, the voltage judgment unit 260 may include one input terminal or two input terminals. When including one input terminal, the input terminals are both electrically connected to the first connection point and the second connection point, and can be obtained through time sharing. The voltage of the first connection point and the second connection point can then be obtained as a voltage difference; when two input terminals are included, the two input terminals are electrically connected to the first connection point and the second connection point respectively, so that the first connection point can be obtained The voltage of the connection point, the voltage of the second connection point, and then the voltage judgment unit 260 can obtain the voltage difference. When the power supply voltage is large, the indicator light 120 will be turned on. When the indicator light 120 is turned on, the voltage judgment unit 260 is used to determine whether the voltage difference is greater than or equal to the first reference voltage. The voltage difference is the first connection point and the second connection point. The voltage difference Vdv between them can also be proportional to the voltage difference Vdv between the first connection point and the second connection point, that is, K*Vdv, where K is a positive number less than 1. When the voltage determination unit 260 determines that the voltage difference is greater than or equal to the first reference voltage, the system control circuit 200 operates in the first mode. When the voltage determination unit 260 determines that the voltage difference is less than the first reference voltage, the system control circuit 200 operates in the second mode. In this embodiment, the voltage at the power supply terminal BAT in the first mode is directly used to drive the indicator light 120 without boosting the voltage at this time. The voltage at the power supply terminal BAT in the second mode is boosted and used to drive the indicator light 120 . 120.

In this embodiment, please refer to FIG. 31 and FIG. 32 in conjunction. The voltage judgment unit 260 includes a voltage comparison unit 261. The first input terminal of the voltage comparison unit 261 is electrically connected to the first connection point. The second input of the voltage comparison unit 261 is electrically connected to the first connection point. terminal is electrically connected to the second connection point. The voltage comparison unit 261 obtains the voltage of the first input terminal and the second input terminal and obtains the voltage difference through subtraction calculation, and then compares it with the internal preset first reference voltage. The voltage comparison unit 261 determines The system control circuit 200 operates in the first mode when the voltage difference is greater than or equal to the first reference voltage, and the system control circuit 200 operates in the second mode when the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage.

When the light control unit 250 controls the indicator light 120 to light up, generally speaking, when the voltage of the power supply terminal BAT is relatively large, for example, greater than or equal to 3V, the indicator light 120 will be turned on and the indicator light 120 will be driven. lights up, and the indicator light 120 can also be set to achieve the desired brightness. The voltage difference on the indicator light 120 will be greater than or equal to the first reference voltage; when the voltage of the power supply terminal BAT is relatively small, for example, less than 3V, the power supply The voltage of the power supply terminal BAT cannot drive the indicator light 120, the indicator light 120 will not be driven to conduction, and the indicator light 120 is disconnected (or the indicator light 120 is turned on but the brightness is relatively dim). At this time, the first connection point The voltage is the voltage of the power supply terminal BAT, and the voltage of the second connection point is the voltage of the power supply ground terminal GND, so the voltage difference on the indicator light 120 will be less than the first reference voltage. This application uses this characteristic to determine whether the voltage provided by the power supply can drive the indicator light 120 . In this embodiment, the first reference voltage is preset according to requirements, and its range is generally 2.5V-3.5V, such as 2.5V, 2.6V, 2.7, 2.8V, 2.9V, 3V, 3.1V, 3.2V, 3.3V, 3.4V, 3.5V, etc., preferably 3V. Of course, the first reference voltage can also be set according to the user's needs for the light and dark of the indicator light 120.

In this embodiment, the voltage judgment unit 260 also includes a flip-flop 262 and an inverter 263. The first input end of the flip-flop 262 is electrically connected to the output end of the voltage comparison unit 261, and the second input end of the flip-flop 262 is connected to the light. The control unit 250 is electrically connected, the output terminal of the flip-flop 262 (for example, the Q NOT terminal) is electrically connected to the fourth input terminal of the first logic gate 241 via the inverter 263, and the voltage judgment unit 260 can control the second switch unit to remain open. .

Specifically, when the voltage difference is higher than or equal to the first reference voltage, the voltage comparison unit 261 outputs the first signal so that the system control circuit 200 operates in the first mode. At this time, the output of the flip-flop 262 passes through the inverter. Output a high level (digital signal 1) to the first logic gate 241, the first switch unit K1 is always on, and the second switch unit K2 is always off. At this time, the voltage of the power supply terminal BAT directly drives the indicator light 120. In this embodiment, the first switch unit K1 is included in the first power supply unit, and the first power supply unit is used to drive the voltage of the power supply terminal BAT to the indicator light 120 without boosting the voltage. When the voltage difference is less than the first reference sub-voltage, the voltage comparison unit 261 outputs a second signal so that the system control circuit 200 operates in the second mode. At this time, the output of the flip-flop 262 outputs a low level (digital signal) through the inverter. 0) For the first logic gate 241, the clock signal is high level during the first time period. During this time period, the clock signal controls the first switch unit K1 and the third switch unit K3 to be turned on, and the second switch unit K2 is turned off. cut off, the first capacitor C1 is charged, and in the second time period the clock The signal is low level. During this period, the clock signal drives the first switch unit K1 and the third switch unit K3 to turn off, and the second switch unit K2 turns on. The potential of the first end of the first capacitor C1 is raised. The first capacitor C1 supplies power to the indicator light 120, and the indicator light 120 is lit. In this embodiment, the first switch unit K1 and the second switch unit K2 are included in the second power supply unit, and the second power supply unit is used to supply power to the power supply. The voltage at terminal BAT is boosted, so that the boosted voltage drives the indicator light 120. In this embodiment, the second power supply unit includes the first power supply unit. In this embodiment, one cycle of the clock signal includes a first time period and a second time period. The clock signal is a periodic pulse signal. The indicator light 120 follows the clock signal to perform periodic brightening and darkening. Since the frequency of the clock signal is high, , so the human eye cannot distinguish the bright and dark flashing of the indicator light 120 . In this embodiment, the first signal is low level (digital signal 0), and the second signal is high level (digital signal 1). However, the present application is not limited to this. In other embodiments of the present application, the first signal is high level and the second signal is low level. High level and low level can be converted by adding an inverter as needed. In this embodiment, darkening of the indicator light 120 may mean that the indicator light 120 is turned off, or it may mean that the brightness of the indicator light 120 is low, which is lower than the brightness of the indicator light 120 being on.

In this embodiment, the first input terminal of the voltage comparison unit 261 is a non-directional terminal, and the second input terminal of the voltage comparison unit 261 is a reverse terminal. However, the application is not limited thereto. In other embodiments of the application, The first input terminal may also be the reverse terminal of the voltage comparison unit 261 , and the second input terminal may be the non-directional terminal of the voltage comparison unit 261 . In addition, in other embodiments of the present application, the second power supply unit may not include the first power supply unit. In this case, the first power supply unit includes a fifth switch unit, and the control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply terminal BAT, and the second end of the fifth switch unit is used to be electrically connected to the indicator light 120. The switch control unit includes a fifth drive unit, and the output end of the fifth drive unit is connected to the fifth drive unit. The control terminals of the five switch units are electrically connected, and the input terminal of the fifth drive unit is electrically connected to the logic control unit 240, the first drive unit 210, the second drive unit 220 or the third drive unit 230. The specific circuit of the fifth drive unit can be Referring to the first driving unit 210, details will not be repeated here; the second power supply unit includes a first boost unit, the first end of the first boost unit is electrically connected to the power supply terminal BAT, and its second end is used to connect to the light-emitting end. Electrically connected, the control end of the first boost unit is electrically connected to the switch control unit. The first boost unit includes a second switch unit K2 and a first switch unit K1, where the first end of the second switch unit K2 and the first switch unit K1 are electrically connected. The first end of the switch unit K1 is electrically connected to the power supply terminal BAT. The second end of the first switch unit K1 is used to be electrically connected to the first end of the first capacitor C1 and the first end of the indicator light 120. The first switch The control end of the unit K1 is electrically connected to the switch control unit, the control end of the second switch unit K2 is electrically connected to the switch control unit, and its second end is used to be electrically connected to the second end of the first capacitor C1, and its second end is also electrically connected to the switch control unit. Indirectly electrically connected to the power supply ground terminal GND. In the second mode, in the first time period, the switch control unit controls the first switch unit K1 to turn on and the second switch unit K2 to turn off to charge the first capacitor C1, and in the second time period, the switch control unit controls the second switch unit K2 is turned on and the first switch unit K1 is turned off so that the potential of the first end of the first capacitor C1 is raised for driving the indicator light 120. In the second mode, the fifth switch unit remains normally turned off; in the first mode, the fifth switch unit K1 is turned off. The first switch unit K1 and the second switch unit K2 remain normally off, and the fifth switch unit remains normally on. In addition, in other embodiments of the present application, the first boost unit is not limited to the above circuit, and the first boost unit may also be a boost circuit, etc.

In an illustrative example of this embodiment, when the light control unit 250 controls the indicator light 120 to light, the voltage is not boosted first, and the voltage comparison unit 261 determines the voltage difference between the first connection point and the second connection point. , when the voltage comparison unit 261 determines that the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit 261 outputs the first signal to the flip-flop 262. When the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage, the voltage comparison unit 261 Output the second signal to the flip-flop 262. In the example, the first signal is low level and the second signal is high level. The other input end of the flip-flop 262 receives the light-on signal from the light-on control unit 250. The light-on signal is low. level, when the flip-flop 262 receives the first signal, the flip-flop 262 maintains the original output (the output when the light on control unit 250 controls the light off) via the inverter 263, and when the flip-flop 262 receives the second signal, The flip-flop 262 continuously outputs the second driving signal to the first logic gate 241 through the inverter 263. The second driving signal is low level, so the first logic gate 241 is controlled by the clock signal, and the voltage of the power supply terminal BAT is increased. After pressing, it is used to drive the indicator light 120. When the light control unit 250 controls the indicator light 120 to extinguish, the light control unit 250 outputs an extinguishing signal to the flip-flop 262. The extinguishing signal is high level, and the flip-flop 262 continues to output the first driving signal to the first driving signal via the inverter 263. A logic gate 241, the first driving signal is high level, so the first logic gate 241 outputs a low level, and then the first switch unit remains on, the second switch unit remains off, and the system control circuit 200 Work in first mode. In this example, flip-flop 262 is an RS flip-flop, which is composed of a NOR gate. In other illustrations of this embodiment, the RS flip-flop can also be composed of a NAND gate, and the signal is changed accordingly. Moreover, in this embodiment, when the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120, the voltage comparison unit 261 changes from outputting the second signal to outputting the first signal. Since the first signal is low level (digital signal 0), so the flip-flop 262 still maintains the original output via the inverter 263, so the voltage of the power supply terminal BAT is still boosted for driving the indicator light 120, that is, it still works in the second mode, there will be no situation where the voltage is not boosted (the power supply terminal BAT is directly driven), that is, when the light control unit 250 controls the light to turn on, when the voltage judgment unit 260 determines that the voltage needs to be boosted, the voltage comparison unit is subsequently ignored. 261, the power supply terminal BAT keeps boosting until the light turns on and the control unit 250 controls the light to turn off. Then when it lights up again, it needs to be judged whether the voltage needs to be boosted.

In another example, when the voltage of the power supply terminal BAT changes from high to low, the voltage comparison unit 261 previously outputs the first signal, and then due to the consumption of power, the voltage of the power supply terminal BAT will decrease. When When the voltage difference between the first connection point and the second connection point is reduced to less than the first reference voltage, the voltage comparison unit 261 outputs a second signal, the second signal is high level, and the flip-flop 262 passes through the inverter 263 The final output changes from high level to low level, so that the first logic gate 241 (NOR gate) is controlled by the clock signal, and the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120 .

In this embodiment, the voltage of the first connection point is greater than the voltage of the second connection point.

In addition, in other embodiments of the present application, please refer to Figure 33. The voltage judgment unit 260 is electrically connected to the power supply terminal BAT to form a first connection point, and the voltage judgment unit 260 is also electrically connected to the power supply ground terminal GND to form a second connection point. connection point. At this time, the voltage between the first connection point and the second connection point is the power supply voltage. Regardless of whether the voltage needs to be boosted or not, the power supply voltage will not change whether it is boosted or not. In this case The voltage judgment unit 260 may also not include the flip-flop 262 and the inverter 263. When the voltage of the power supply terminal BAT is relatively high, the indicator light 120 will be turned on at this time, and the indicator light 120 will be driven to light up, and the voltage difference between the first connection point and the second connection point will be greater than or equal to the first reference point. voltage; when the voltage of the power supply terminal BAT is relatively small, the voltage of the power supply terminal BAT cannot drive the indicator light 120, the indicator light 120 will not be driven on, and the indicator light 120 is disconnected. At this time, the first connection The voltage of the first connection point is the voltage of the power supply terminal BAT, and the voltage of the second connection point is the voltage of the power supply ground terminal GND. Therefore, the voltage difference between the first connection point and the second connection point will be less than the first reference voltage. In addition, in other embodiments of the present application, the voltage judgment unit 260 is electrically connected to the line between the third light-emitting terminal FG3 and the power supply terminal BAT to form a first connection point, for example, with the first connection point of the fourth switch unit K4. The terminal is electrically connected, that is, it is electrically connected to the first light-emitting terminal FG1.

In addition, in other embodiments of the present application, please refer to Figures 34 and 35. The second end of the indicator light 120 is electrically connected to the third light-emitting terminal FG3, and the third light-emitting terminal FG3 is connected to the power ground terminal via the fourth switch unit K4. GND is electrically connected, and the voltage judgment unit 260 is electrically connected to the first light-emitting terminal FG1 to form a first connection point, or is electrically connected to a line between the first light-emitting terminal FG1 and the power supply terminal BAT to form a first connection point. The judgment unit 260 is also electrically connected to the third light-emitting terminal FG3 to form a second connection point. When the voltage of the power supply terminal BAT is relatively high, the indicator light 120 will be turned on at this time, and the indicator light 120 will be driven to light up, and the indicator light 120 can also be set to achieve the desired brightness. The first connection point and the second connection point The voltage difference between the points will be greater than or equal to the first reference voltage; when the voltage of the power supply terminal BAT is relatively small, the voltage of the power supply terminal BAT cannot drive the indicator light 120, and the indicator light 120 will not be driven to turn on. The indicator light 120 is disconnected (or the indicator light 120 is turned on but the brightness is relatively dim). At this time, the voltage of the first connection point is the voltage of the power supply terminal BAT, and the voltage of the second connection point is the power supply ground terminal GND. voltage, so the voltage difference between the first connection point and the second connection point will be less than the first reference voltage.

In addition, in other embodiments of the present application, please refer to FIG. 36 , the voltage judgment unit 260 is electrically connected to the first light-emitting terminal FG1 to form a first connection point, or is located between the first light-emitting terminal FG1 and the power supply terminal BAT. The circuit is electrically connected to form a first connection point, and the voltage judgment unit 260 is also electrically connected to the power supply ground terminal GND to form a second connection point. When the voltage of the power supply terminal BAT is relatively high, the indicator light 120 will be turned on at this time, and the indicator light 120 will be driven to light up, and the voltage difference between the first connection point and the second connection point will be greater than or equal to the first reference point. voltage; when the voltage of the power supply terminal BAT is relatively small, the voltage of the power supply terminal BAT cannot drive the indicator light 120, the indicator light 120 will not be driven to conduction, and the indicator light 120 is disconnected. At this time, the first connection The voltage at the second connection point is the voltage at the power supply terminal BAT, and the voltage at the second connection point is is the voltage of the power supply ground terminal GND, so the voltage difference between the first connection point and the second connection point will be less than the first reference voltage. In addition, in other embodiments of the present application, the voltage judgment unit 260 can also be electrically connected to the line between the power supply ground terminal GND and the second end of the indicator light 120 to form a second connection point, specifically with the line between the power supply ground terminal GND and the second terminal of the indicator light 120 . The line between GND and the third light-emitting terminal FG3 is electrically connected to form a second connection point. For example, a current limiting resistor may be provided between the power ground terminal GND and the third light-emitting terminal FG3.

1. When the voltage of the power supply 110 is relatively large, the voltage of the power supply 110 is sufficient to drive the indicator light 120 and the brightness is relatively bright. At this time, the voltage judgment unit 260 judges that the voltage difference is greater than or equal to the first reference voltage, and the voltage judgment unit 260 controls the system. The control circuit 200 works in the first mode. In the first mode, the indicator light 120 is directly driven by the voltage of the power supply terminal BAT without the need for voltage boosting, which is beneficial to improving the energy utilization rate of the power supply 110 . Moreover, when the voltage of the power supply 110 is relatively low, and the voltage judgment unit 260 judges that the voltage difference is less than the first reference voltage, the voltage judgment unit 260 controls the system control circuit 200 to work in the second mode. In the second mode, the power supply terminal BAT After the voltage is boosted, it is used to drive the indicator light 120, so that even if the voltage of the power supply 110 is relatively low, the indicator light 120 can be normally lit after boosting, and the brightness is relatively bright, which is conducive to the normal use of the indicator light 120, and the indicator light 120 will not appear. The problem of getting darker and darker during use.

2. The power supply voltage range provided by the power supply of the electronic atomization device in this embodiment includes 1.5V-5V. For example, the power supply voltage range provided by the power supply is 1.5V-3.6V, 2.5V-4.2V or 3V-5V, that is, The power supply can use either low-voltage power supply 110 or ordinary power supply 110, that is, the power supply 110 can be mixed, which facilitates the assembly of the electronic atomization device, and there is no need to set corresponding system control circuits 200 according to different power supplies 110. In this embodiment The system control circuit 200 is universal, which can enhance the market competitiveness of the system control circuit 200 . When the electronic atomization device uses the ordinary power supply 110 and the voltage is not too low, the voltage judgment unit 260 judges that the voltage difference between the first connection point and the second connection point is greater than the first reference voltage, then the voltage judgment unit 260 controls the system The control circuit 200 works in the first mode. In the first mode, the indicator light 120 is directly driven by the voltage of the power supply terminal BAT. At this time, the indicator light 120 is directly driven by the power supply 110 and does not require voltage boosting; when the electronic atomization device uses a low-voltage power supply 110 and the voltage is not too high, and the voltage judgment unit 260 judges that the voltage difference is less than the first reference voltage, the voltage judgment unit 260 controls the system control circuit 200 to work in the second mode. In the second mode, the voltage of the power supply terminal BAT is After boosting, the voltage is used to drive the indicator light 120 to light up, and the brightness is similar to that of the ordinary power supply 110 . Therefore, the electronic atomization device of this embodiment can be used with two specifications of power supply 110. No matter which power supply 110 is used, the electronic atomization device will not be damaged, and the indicator light 120 can also work normally.

Tenth embodiment

An embodiment of the present application provides an electronic atomization device. The electronic atomization device is, for example, an electronic cigarette. Please refer to Figure 1. The electronic atomization device includes an indicating component, a heating wire 130, and an airflow sensor 140. The indicating component includes a power supply 110 and an indicator light. 120. System control circuit 200, first capacitor C1. Among them, the system control circuit 200 is electrically connected to the power supply 110, the indicating component, the heating wire 130, the air flow sensor 140, etc. respectively. In this embodiment, the power supply 110 includes a battery cell. The power supply 110 is a low-voltage power supply. The power supply voltage it provides ranges from 1.5V to 3.6V. For example, the power supply voltage it provides ranges from 1.5V to 3.6V and 1.6V to 1.6V. 3.6V, 1.5V-3.4V, 1.8V-3.5V, 2.1V-3.6V, 2V-3V, etc., their nominal voltage is lower than or equal to 3V, the nominal voltage is generally 2.5V-2.9V, for example, 2.7 V, 2.8V. The indicator light 120 is, for example, an LED light. The LED light is, for example, a white LED light and/or a blue LED light. The forward voltage range of these LED lights is generally 2.5V-3.6V, such as 3V. The voltage for driving the LED light is only Only when the forward voltage is greater than the forward voltage can the LED light be lit. The airflow sensor 140 is, for example, a MEMS sensor or a microphone.

In order to reduce energy consumption, in this embodiment, the charging element is the third switch unit K3. When the voltage needs to be boosted, the third switch unit K3 The element K3 and the first switch unit K1 are turned on and turned off at the same time. In other situations, whether the third switch unit K3 and the first switch unit K1 are turned on or not may not be synchronized. The control end of the third switch unit K3 is electrically connected to the switch control unit. The first end of the third switch unit K3 is electrically connected to the second end of the first capacitor C1 and the second end of the second switch unit K2. The third switch unit K3 The second terminal of K3 is electrically connected to the power supply terminal BAT. In this embodiment, when the first switch unit K1 and the third switch unit K3 are turned off, the second switch unit K2 is turned on. At this time, the branch where the third switch unit K3 is located does not need to consume energy, which is beneficial to Energy saving. In addition, in other embodiments of the present application, the charging element can also be a resistor. Compared with the solution of the third switch unit K3, the branch where the resistor is located needs to consume energy when the second switch unit K2 is turned on, which is not conducive to saving. energy.

Specifically, please refer to Fig. 1, Fig. 2 and Fig. 3. The first driving unit 210 includes an inverter (the inverter is also called a NOT gate) 211, a first NMOS transistor NM1, a second NMOS transistor NM2, a first PMOS transistor PM1 and second PMOS transistor PM2, wherein the input end of the inverter 211 is electrically connected to the control end of the second switching unit K2, and the output end of the inverter 211 is electrically connected to the control end of the first NMOS transistor NM1, The source of the first NMOS transistor NM1 is electrically connected to the power ground terminal GND. The drain of the first NMOS transistor NM1 is electrically connected to the drain of the first PMOS transistor PM1 and the control end of the second PMOS transistor PM2 respectively. The first PMOS transistor The control terminal of PM1 is electrically connected to the drain of the second NMOS transistor NM2, the source of the first PMOS transistor PM1 is electrically connected to the first terminal of the first capacitor C1, and the source of the second NMOS is electrically connected to the power ground terminal GND. The control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit K2, the drain of the second NMOS transistor NM2 is also electrically connected to the drain of the second PMOS transistor PM2, and the source of the second PMOS transistor PM2 is electrically connected to the first The first end of the capacitor C1 is electrically connected, and the drain of the second NMOS transistor NM2 is also used to control whether the first switch unit K1 is turned on. In this embodiment, the drain of the second NMOS transistor NM2 is directly electrically connected to the control terminal of the first switch unit K1, but the application is not limited to this. In other embodiments of the application, in order to improve the driving capability, the second Multiple inverters 211 can also be provided between the drain of the NMOS tube NM2 and the control terminal of the first switching unit K1, for example, 2, 4, or 6 inverters 211. The inverters 211 are, for example, made of CMOS tubes. constitute. In addition, in other embodiments of the present application, when the first switch unit K1 is an NMOS tube, the first drive unit 210 also includes a second boost circuit, and the second boost circuit is used to drive the first switch unit K1 is turned on, the boosted voltage of the second boost circuit is greater than the voltage of the power supply 110; the second boost circuit can be a conventional boost circuit in the field, such as a boost circuit, etc., which will not be described again here.

In this embodiment, the logic control unit 240 includes a first logic gate 241 and a second logic gate 242 . The first logic gate 241 includes a first input terminal, a second input terminal, and a third input terminal. The first input terminal of the first logic gate 241 is connected to the clock signal CLK, and the second input terminal of the first logic gate 241 is connected to the clock signal CLK. Enable signal, the third input terminal of the first logic gate 241 is electrically connected to the control terminal of the third switch unit K3. The second logic gate 242 includes a first input terminal and a second input terminal. The first input terminal of the second logic gate 242 is electrically connected to the control terminal of the second switch unit K2. The second input terminal of the second logic gate 242 is connected to Clock signal CLK. In this embodiment, the first logic gate 241 is a NOR gate, and the second logic gate 242 is a NAND gate. In this embodiment, when the enable signal is high level, the first switch unit K1 is normally on and the second switch unit K2 is normally off. At this time, the indicator light 120 will not be lit. When the enable signal When it is low level, the first switch unit K1, the third switch unit K3, and the second switch unit K2 are controlled by the clock signal CLK. Moreover, since the third input terminal of the first logic gate 241 is electrically connected to the control terminal of the third switch unit K3, the first input terminal of the second logic gate 242 is electrically connected to the control terminal of the second switch unit K2, so that the second The switch unit K2 and the third switch unit K3 will not be turned on at the same time. One of them will be turned on, and the other one will be turned off. In addition, in other embodiments of the present application, the first logic gate 241 can also be other logic gate circuits, which can realize the effect of a NOR gate, and the second logic gate 242 can also be other logic gate circuits, which can realize the NAND gate. Effect. In this embodiment, the clock signal CLK is a periodic pulse signal. One cycle of the clock signal CLK includes a first time period and a second time period. In the first time period, the clock signal is at a high level, and in the second time period, the clock signal CLK is at a high level. The clock signal is at a low level, and the frequency of the clock signal CLK is greater than or equal to 50Hz. The period of the clock signal CLK is also the charge and discharge period of the first capacitor C1. When the indicator light 120 needs to be lit, it is also the point of the indicator light 120. The bright cycle, setting such a high frequency, can prevent human eyes from distinguishing the flashing of the indicator light 120 .

In order to effectively control whether the indicator light 120 is lit and prevent the indicator light 120 from being lit when it does not need to be lit, in this embodiment, please continue to refer to Figures 1-3, the system control circuit 200 also includes a fourth switch unit K4, the fourth switch unit K4 is connected in series with the indicator light 120. In this embodiment, the second end of the fourth switch unit K4 and the second end of the indicator light 120 are electrically connected through the current limiting resistor Rx. The first end is electrically connected to the power ground terminal GND. The control end of the fourth switch unit K4 is controlled by the light control unit 250. The light control unit 250 is used to control whether the fourth switch unit K4 is turned on. Only when the fourth switch unit K4 The indicator light 120 can emit light when it is turned on, and the light control unit 250 will control the fourth switch unit K4 to turn on only when the indicator light 120 needs to be lit. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the indicator light 120 and the fourth switch unit K4 are located. In addition, in other embodiments of the present application, please refer to FIGS. 4 and 5 , the fourth switch unit K4 may also be located between the indicator light 120 and the second end of the first switch unit K1 . Specifically, the fourth switch unit K4 The first end of the unit K4 is electrically connected to the first end of the first switch unit K1. The second end of the fourth switch unit K4 is electrically connected to the first end of the indicator light 120 via the current limiting resistor Rx. The second end of the indicator light 120 terminal is electrically connected to the power ground terminal GND, and the control terminal of the fourth switch unit K4 is electrically connected to the light control unit 250. Here, the fourth switch unit K4 is a PMOS tube, and the fourth switch unit K4 is used as a switching element. It usually works in the linear region of the MOS tube. In addition, in other embodiments of the present application, the fourth switch unit K4 may also be included in the electrical circuit In the current source, at this time, the current source and the indicator light 120 are connected in series, and the control end of the current source is electrically connected to the light control unit 250. The light control unit 250 controls whether the current source is working. Only when the current source is working, the fourth switch unit K4 is turned on. Only when the indicator light 120 is turned on can the indicator light 120 be lit. When the light control unit 250 controls the current source to not work, the fourth switch unit K4 is turned off and the indicator light 120 will not emit light. At this time, the fourth switch unit K4 works when it is turned on. The saturation area of the MOS tube. In addition, in other embodiments of the present application, the current limiting resistor Rx may not be provided on the branch where the fourth switch unit K4 and the indicator light 120 are located.

Please continue to refer to FIG. 3. In this embodiment, the light control unit 250 is used to output an enable signal. That is, the light control unit 250 is electrically connected to the second input terminal of the first logic gate 241. When the indicator light 120 does not need to be lit, When it is on, the light control unit 250 controls the fourth switch unit K4 to turn off. At the same time, the light control unit 250 outputs a high-level enable signal. The first switch unit K1 and the third switch unit K3 are normally on. The second switch unit K2 is normally turned off, so that the first capacitor C1 is charged. At this time, even if the fourth switch unit K4 misleads the indicator light 120 to turn on, it will not be lit, forming a double mechanism to prevent the indicator light 120 from being accidentally lit. When the indicator light 120 needs to be lit, the light control unit 250 controls the fourth switch unit K4 to be turned on, and at the same time, the light control unit 250 outputs a low-level enable signal, so that the charge and discharge of the first capacitor C1 is affected by the clock signal period. The indicator light 120 is periodically controlled so that the indicator light 120 turns on and off periodically. In this embodiment, the fourth switch unit K4 can be an NMOS tube or a PMOS tube. In this embodiment, it is an NMOS tube. The first terminal of the fourth switch unit K4 is a source, and the second terminal of the fourth switch unit K4 is a source. is the drain. Moreover, in order to control the current flowing through the indicator light 120, a current limiting resistor Rx is connected in series on the branch where the fourth switch unit K4 and the indicator light 120 are located. The current limiting resistor Rx can be located between the fourth switch unit K4 and the indicator light 120. , the current limiting resistor Rx can also be located between the indicator light 120 and the first end of the first capacitor C1, and the current limiting resistor Rx can also be located between the fourth switch unit K4 and the power ground terminal GND.

In this embodiment, please refer to Figures 1 to 3 in conjunction. The system control circuit 200 is located on the same chip. The power supply terminal BAT is the power supply pin, and the power ground terminal GND is the power ground pin. The chip also includes a third A light-emitting pin/terminal FG1, a second light-emitting pin/terminal FG2, and a third light-emitting pin/terminal FG3, where the first light-emitting pin FG1 is used to communicate with the first terminal of the first capacitor C1 and the indicator light 120 The first end is electrically connected, the second light-emitting pin FG2 is used to be electrically connected to the second end of the first capacitor C1, and the third light-emitting pin FG3 is used to be electrically connected to the second end of the indicator light 120 and the fourth switch unit K4. . In this embodiment, the chip also includes an airflow detection pin SW and an atomization pin AT. The airflow detection pin SW is electrically connected to an airflow detection element. The airflow detection element is, for example, an airflow sensor 140. The airflow sensor 140 is, for example, a capacitive microphone. head, switch microphone, MEMS sensor, etc., the air flow detection pin SW is electrically connected to the status detection unit, through the status detection unit and the air flow sensor 140, it can be detected whether the electronic atomization device is smoked, the atomization pin AT is used to communicate with The heating wire 130 is electrically connected. In addition, in other embodiments of the present application, the first capacitor C1 can also be integrated on the chip, and in this case, there is no need to provide the second light-emitting pin FG2. In addition, in other embodiments of the present application, the chip can also integrate the airflow sensor 140 , that is, the airflow sensor 140 and the system control circuit 200 are located on the same chip. In addition, in other embodiments of the present application, please refer to Figures 4 and 5. The chip also includes a first light-emitting pin FG1, a second light-emitting pin FG2, and a third light-emitting pin FG3, where the first light-emitting pin The pin FG1 is used for electrical connection with the first terminal of the first capacitor C1 and the first terminal of the fourth switch unit K4, the second light-emitting pin FG2 is used for electrical connection with the second terminal of the first capacitor C1, and the third light-emitting pin The pin FG3 is used to be electrically connected to the second end of the fourth switch unit K4 and the first end of the indicator light 120. The second end of the indicator light 120 is electrically connected to the power ground pin GND.

In addition, in other embodiments of the present application, a voltage stabilizing capacitor can also be provided between the first light-emitting pin FG1 and the power supply ground terminal GND. The voltage stabilizing capacitor is used to make the indicator light 120 emit light more stably when it is lit, and will not be ignored. Dark and bright.

In addition, in other embodiments of the present application, please refer to Figure 6. The switch control unit may not include the second drive unit and the third drive unit. The control end of the second switch unit and the control end of the third switch unit are both connected to The logic control unit is electrically connected. Wherein, the logic control unit includes an OR gate 243, wherein the first input end of the OR gate 243 is connected to the clock signal CLK, The second input end of the OR gate 243 is connected to the enable signal, and the output end of the OR gate 243 is electrically connected to the control end of the first drive unit, the second switch unit K2 and the third switch unit K3 respectively.

Generally speaking, since the voltage range of the low-voltage power supply 110 is relatively large, when the voltage of the low-voltage power supply 110 is relatively high, for example, when the voltage of the low-voltage power supply 110 is higher than 3V, after the first capacitor C1 is charged, the switch control unit controls the second switch When the unit K2 is turned on and the first switching unit K1 and the third switching unit K3 are turned off, the voltage at the second end of the first switching unit K1 is twice the voltage of the power supply 110 and is higher than 6V. When the switch control unit When controlling the first switch unit K1 to prepare to turn on, since the control terminal of the first switch unit K1 quickly drops to 0V, it takes a certain time for the first switch unit K1 to turn on, and due to the existence of the first capacitor C1, the first switch unit K1 It is not turned on yet, and at this time, the voltage between the control terminal and the second terminal of the first switch unit K1 is higher than 6V. Generally, in order to reduce costs, the first switch unit K1 is manufactured through a low-voltage process of less than or equal to 6V. The first switching element manufactured by the low-voltage process has a pressure-bearing capacity lower than 6V. When the voltage it withstands is higher than 6V, its reliability will decrease. Therefore, during the turn-on and conduction process of the first switch unit K1, if the voltage span ratio between the control terminal and the second terminal of the first switch unit K1 is greater than 6V, the first switch unit K1 may be damaged. In other embodiments of the present application, when the first switch unit K1 is an NMOS, the first switch unit K1 is generally connected to a voltage of 0V to turn off the first switch unit K1. After that, when the second end of the first switch unit K1 is raised to When the voltage of the power supply 110 is twice that of the power supply 110 , the voltage span between the control terminal of the first switch unit K1 and its second terminal is relatively large, which may also cause damage to the first switch unit K1 . Moreover, when the first switch unit K1 is turned off, a voltage spike will occur. If the voltage of the low-voltage power supply 110 is relatively high and is boosted by the first capacitor C1, the voltage spike will also be boosted, because the voltage of the power supply 110 is relatively high. , the voltage spike will be higher after boosting, and the voltage spike may exceed 9V, which may easily cause damage to the first switch unit K1 and the indicator light 120. In addition, when the voltage of the ordinary power supply 110 or the low-voltage power supply 110 is high, the voltage is still boosted at this time. The voltage boosting will reduce the efficiency and energy efficiency, and the voltage boosting is more likely to cause damage to the first switch unit K1 or damage to other components. In order to solve this problem, this application provides an eleventh embodiment.

Eleventh embodiment

Please refer to Figure 37. Figure 37 is a circuit module diagram of the system control circuit of the eleventh embodiment of the present application. This embodiment is similar to the tenth embodiment, so the parts not described in this embodiment can refer to the tenth embodiment. The main difference between this embodiment and the tenth embodiment is that it also includes a voltage judgment unit.

Please refer to Figure 37. In this embodiment, the system control circuit 200 includes a detection resistor R0. The first end of the detection resistor R0 is indirectly electrically connected to the power supply terminal BAT. Specifically, the first end of the detection resistor R0 is connected to the fourth switch unit K4. The second end of the detection resistor R0 is electrically connected to the first end of the indicator light 120. The detection resistor R0 is connected in series with the indicator light 120. The power ground terminal GND is used directly (for example, Figure 37) or indirectly ( For example, Figure 40 below) is electrically connected to the second end of the indicator light 120.

In this embodiment, the system control circuit 200 further includes a voltage judgment unit 260. The voltage judgment unit 260 is electrically connected to the first end and the second end of the detection resistor R0, and is used to obtain the voltage at the first end of the detection resistor R0. The voltage of the second terminal. In this embodiment, the voltage judgment unit 260 may include one input terminal or two input terminals. When including one input terminal, the input terminals are electrically connected to the first terminal and the second terminal of the detection resistor R0. connection, the voltages at the first and second ends of the detection resistor R0 can be obtained through time sharing, and then the voltage difference can be obtained; when two input terminals are included, the two input terminals are electrically connected to the first and second terminals. , so that the voltage at the first end and the voltage at the second end of the detection resistor R0 can be obtained, and then the voltage judgment unit 260 can obtain the voltage difference. The voltage determination unit 260 is used to determine whether the voltage difference is greater than or equal to the first reference voltage. The voltage difference is the voltage difference Vdv between the first end and the second end of the detection resistor R0. It can also be the voltage difference Vdv between the first end and the second end of the detection resistor R0. The voltage difference Vdv between the terminals is proportional, that is, K*Vdv, where K is a positive number less than 1. When the voltage determination unit 260 determines that the voltage difference is greater than or equal to the first reference voltage, the system control circuit 200 operates in the first mode. When the voltage determination unit 260 determines that the voltage difference is less than the first reference voltage, the system control circuit 200 operates in the second mode. In this embodiment, the voltage at the power supply terminal BAT in the first mode is directly used to drive the indicator light 120 without boosting the voltage at this time. The voltage at the power supply terminal BAT in the second mode is boosted and used to drive the indicator light 120 . 120.

In this embodiment, please refer to FIG. 37 and FIG. 38 in conjunction. The voltage judgment unit 260 includes a voltage comparison unit 261. The first input end of the voltage comparison unit 261 is electrically connected to the first end of the detection resistor R0. The second input terminal is electrically connected to the second terminal of the detection resistor R0. The voltage comparison unit 261 obtains the voltages of the first input terminal and the second input terminal and obtains the voltage difference through subtraction calculation, and then compares it with the internally preset first reference voltage. , voltage comparison unit 261 The system control circuit 200 operates in the first mode when the voltage difference is determined to be greater than or equal to the first reference voltage, and the system control circuit 200 operates in the second mode when the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage.

When the light control unit 250 controls the indicator light 120 to light up, generally speaking, when the voltage of the power supply terminal BAT is relatively large, for example, greater than or equal to 3V, the indicator light 120 will be turned on at this time, and the indicator light 120 will be driven. lights up, and can also be set to require the indicator light 120 to reach the desired brightness, the voltage difference on the detection resistor R0 will be greater than or equal to the first reference voltage; when the voltage of the power supply terminal BAT is relatively small, for example, less than 3V, at this time The voltage of the power supply terminal BAT cannot drive the indicator light 120, and the indicator light 120 will not be driven to turn on, and the indicator light 120 is disconnected (or although the indicator light 120 is turned on, the brightness is relatively dim, and the current is relatively small at this time). At this time, the voltage on the detection resistor R0 is relatively small or 0, so the voltage difference on the detection resistor R0 will be smaller than the first reference voltage. This application uses this characteristic to determine whether the voltage provided by the power supply can drive the indicator light 120 or make the indicator light 120 reach the desired brightness. In this embodiment, the first reference voltage is preset according to requirements, and its range is generally 80mV-150mV, such as 80mV, 90mV, 100mV, 110mV, 120mV, 130mV, 140mV, 150mV, etc., preferably 100mV. Of course, The first reference voltage can also be set according to the user's requirements for the light and dark of the indicator light 120 .

In this embodiment, the voltage judgment unit 260 also includes a flip-flop 262 and an inverter 263. The first input end of the flip-flop 262 is electrically connected to the output end of the voltage comparison unit 261, and the second input end of the flip-flop 262 is connected to the light. The control unit 250 is electrically connected, the output terminal of the flip-flop 262 (for example, the Q NOT terminal) is electrically connected to the fourth input terminal of the first logic gate 241 via the inverter 263, and the voltage judgment unit 260 can control the second switch unit to remain off. .

Specifically, when the voltage difference is higher than or equal to the first reference voltage, the voltage comparison unit 261 outputs the first signal so that the system control circuit 200 operates in the first mode. At this time, the output of the flip-flop 262 passes through the inverter. Output a high level (digital signal 1) to the first logic gate 241, the first switch unit K1 is always on, and the second switch unit K2 is always off. At this time, the voltage of the power supply terminal BAT directly drives the indicator light 120. In this embodiment, the first switch unit K1 is included in the first power supply unit, and the first power supply unit is used to drive the voltage of the power supply terminal BAT to the indicator light 120 without boosting the voltage. When the voltage difference is less than the first reference sub-voltage, the voltage comparison unit 261 outputs a second signal so that the system control circuit 200 operates in the second mode. At this time, the output of the flip-flop 262 outputs a low level (digital signal) through the inverter. 0) For the first logic gate 241, the clock signal is high level during the first time period. During this time period, the clock signal controls the first switch unit K1 and the third switch unit K3 to be turned on, and the second switch unit K2 is turned off. cut off, the first capacitor C1 is charged, and the clock signal is low level during the second period. During this period, the clock signal drives the first switch unit K1 and the third switch unit K3 to turn off, and the second switch unit K2 conducts Through, the potential of the first end of the first capacitor C1 is raised, the first capacitor C1 supplies power to the indicator light 120, and the indicator light 120 is lit. In this embodiment, the first switch unit K1 and the second switch unit K2 include In the second power supply unit, the second power supply unit is used to boost the voltage of the power supply terminal BAT so that the boosted voltage drives the indicator light 120. In this embodiment, the second power supply unit includes the first power supply unit. In this embodiment, one cycle of the clock signal includes a first time period and a second time period. The clock signal is a periodic pulse signal. The indicator light 120 follows the clock signal to perform periodic brightening and darkening. Since the frequency of the clock signal is high, , so the human eye cannot distinguish the bright and dark flashing of the indicator light 120 . In this embodiment, the first signal is low level (digital signal 0), and the second signal is high level (digital signal 1). However, the present application is not limited to this. In other embodiments of the present application, the first signal is high level and the second signal is low level. High level and low level can be converted by adding an inverter as needed. In this embodiment, darkening of the indicator light 120 may mean that the indicator light 120 is turned off, or it may mean that the brightness of the indicator light 120 is low, which is lower than the brightness of the indicator light 120 being on.

In this embodiment, the first input terminal of the voltage comparison unit 261 is a non-directional terminal, and the second input terminal of the voltage comparison unit 261 is a reverse terminal. However, the application is not limited thereto. In other embodiments of the application, The first input terminal may also be the reverse terminal of the voltage comparison unit 261 , and the second input terminal may be the non-directional terminal of the voltage comparison unit 261 . In addition, in other embodiments of the present application, the second power supply unit may not include the first power supply unit. In this case, the first power supply unit includes a fifth switch unit, and the control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply terminal BAT, and the second end of the fifth switch unit is used to be electrically connected to the indicator light 120. The switch control unit includes a fifth drive unit, and the output end of the fifth drive unit is connected to the fifth drive unit. The control terminals of the five switch units are electrically connected, and the input terminal of the fifth drive unit is electrically connected to the logic control unit 240, the first drive unit 210, the second drive unit 220 or the third drive unit 230. The specific circuit of the fifth drive unit can be Referring to the first driving unit 210, details will not be repeated here; the second power supply unit includes a first boost unit, the first end of the first boost unit is electrically connected to the power supply terminal BAT, and its second end is used to connect to the light-emitting end. Electrical connection, first boost The control end of the unit is electrically connected to the switch control unit. The first boost unit includes a second switch unit K2 and a first switch unit K1, where the first end of the second switch unit K2 and the first end of the first switch unit K1 Both are electrically connected to the power supply terminal BAT. The second end of the first switch unit K1 is used to be electrically connected to the first end of the first capacitor C1 and the first end of the indicator light 120. The control end of the first switch unit K1 is connected to the switch The control unit is electrically connected. The control end of the second switch unit K2 is electrically connected to the switch control unit. Its second end is used to be electrically connected to the second end of the first capacitor C1. Its second end is also indirectly electrically connected to the power supply ground terminal GND. connect. In the second mode, in the first time period, the switch control unit controls the first switch unit K1 to turn on and the second switch unit K2 to turn off to charge the first capacitor C1, and in the second time period, the switch control unit controls the second switch unit K2 is turned on and the first switch unit K1 is turned off so that the potential of the first end of the first capacitor C1 is raised for driving the indicator light 120. In the second mode, the fifth switch unit remains normally turned off; in the first mode, the fifth switch unit K1 is turned off. The first switch unit K1 and the second switch unit K2 remain normally off, and the fifth switch unit remains normally on. In addition, in other embodiments of the present application, the first boost unit is not limited to the above circuit, and the first boost unit may also be a boost circuit, etc.

In an illustrative example of this embodiment, when the light control unit 250 controls the indicator light 120 to light, the voltage is not boosted first, and the voltage comparison unit 261 detects the voltage difference between the first end and the second end of the resistor R0. Determination is made. When the voltage comparison unit 261 determines that the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit 261 outputs the first signal to the flip-flop 262. When the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage, the voltage comparison unit 261 determines that the voltage difference is less than the first reference voltage. The unit 261 outputs a second signal to the flip-flop 262. In the example, the first signal is low level and the second signal is high level. The other input end of the flip-flop 262 receives the light-on signal from the light-on control unit 250. The light-on signal is low level, when the flip-flop 262 receives the first signal, the flip-flop 262 maintains the original output via the inverter 263 (the output when the light control unit 250 controls the light to turn off), when the flip-flop 262 receives the second signal At this time, the flip-flop 262 continues to output the second driving signal to the first logic gate 241 via the inverter 263. The second driving signal is low level, so the first logic gate 241 is controlled by the clock signal, and the voltage of the power supply terminal BAT After being boosted, it is used to drive the indicator light 120 . When the light control unit 250 controls the indicator light 120 to extinguish, the light control unit 250 outputs an extinguishing signal to the flip-flop 262. The extinguishing signal is high level, and the flip-flop 262 continues to output the first driving signal to the first driving signal via the inverter 263. A logic gate 241, the first driving signal is high level, so the first logic gate 241 outputs a low level, and then the first switch unit remains on, the second switch unit remains off, and the system control circuit 200 works in the first model. In this example, the flip-flop 262 is an RS flip-flop 262, which is composed of a NOR gate. In other illustrations of this embodiment, the RS flip-flop 262 can also be composed of a NAND gate, and the signal is changed accordingly. Moreover, in this embodiment, when the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120, the voltage comparison unit 261 changes from outputting the second signal to outputting the first signal. Since the first signal is low level (digital signal 0), so the flip-flop 262 still maintains the original output via the inverter 263, so the voltage of the power supply terminal BAT is still boosted for driving the indicator light 120, that is, it still works in the second mode, there will be no situation where the voltage is not boosted (the power supply terminal BAT is directly driven), that is, when the light control unit 250 controls the light to turn on, when the voltage judgment unit 260 determines that the voltage needs to be boosted, the voltage comparison unit is subsequently ignored. 261, the power supply terminal BAT keeps boosting until the light turns on and the control unit 250 controls the light to turn off. Then when it lights up again, it needs to be judged whether the voltage needs to be boosted.

In another example, when the voltage of the power supply terminal BAT changes from high to low, the voltage comparison unit 261 previously outputs the first signal, and then due to the consumption of power, the voltage of the power supply terminal BAT will decrease. When When the voltage difference between the first terminal and the second terminal is lower than the first reference voltage, the voltage comparison unit 261 outputs a second signal. The second signal is high level, and the flip-flop 262 outputs the signal through the inverter 263 From high level to low level, the first logic gate 241 (NOR gate) is controlled by the clock signal, and the voltage of the power supply terminal BAT is boosted and used to drive the indicator light 120 .

In this embodiment, the voltage of the first terminal is greater than the voltage of the second terminal.

In addition, in other embodiments of the present application, please refer to Figure 39. The detection resistor R0 is located between the power supply terminal BAT and the first switch unit K1. Specifically, the first end of the detection resistor R0 is electrically connected to the power supply terminal BAT. connection, the second end of the detection resistor R0 is electrically connected to the first switch unit K1, and the voltage judgment unit 260 is electrically connected to the first and second ends of the detection resistor R0. In this embodiment, the voltage on the detection resistor R0 is not It will change depending on whether the voltage is boosted or not. When the voltage of the power supply terminal BAT is relatively high, the indicator light 120 will be turned on at this time, and the indicator light 120 will be driven to light up, and the voltage difference between the first end and the second end of the detection resistor R0 will be greater than or equal to the third end. A reference voltage; when the power supply terminal BAT The voltage of the power supply terminal BAT is relatively small. At this time, the voltage of the power supply terminal BAT cannot drive the indicator light 120. The indicator light 120 will not be driven to turn on, and the indicator light 120 is disconnected. Or even if the indicator light 120 is driven to turn on, the current is relatively small. small, the brightness cannot meet the user's needs. At this time, the voltage difference between the first end and the second end of the detection resistor R0 will be less than the first reference voltage. In this case, the voltage judgment unit 260 may not include a trigger. 262 and inverter 263. In addition, in other embodiments of the present application, the detection resistor R0 can also be located between the positive electrode of the power supply and the power supply terminal. Specifically, the first end of the detection resistor R0 is electrically connected to the positive electrode of the power supply, and the second end of the detection resistor R0 It is electrically connected to the power supply terminal. At this time, the detection resistor R0 is located outside the chip.

In addition, in other embodiments of the present application, please refer to Figures 40 and 41. The second end of the indicator light 120 is electrically connected to the first end of the detection resistor R0, and the detection resistor R0 is connected to the power ground terminal via the fourth switch unit K4. GND is electrically connected, and the voltage judgment unit 260 is electrically connected to the first end and the second end of the detection resistor R0. When the voltage of the power supply terminal BAT is relatively high, the indicator light 120 will be turned on at this time, and the indicator light 120 will be driven to light up, and the indicator light 120 can also be set to achieve the desired brightness. The first end of the detection resistor R0, The voltage difference between the second terminals will be greater than or equal to the first reference voltage; when the voltage of the power supply terminal BAT is relatively small, the voltage of the power supply terminal BAT cannot drive the indicator light 120, and the indicator light 120 will not be driven. On, the indicator light 120 is off, or even if the indicator light 120 is driven on, the current is small and the brightness cannot meet the user's needs. At this time, the voltage difference between the first end and the second end of the detection resistor R0 will be less than the first reference voltage. In addition, in other embodiments of the present application, please refer to Figure 42. The detection resistor R0 can also be located between the power supply ground terminal GND and the fourth switch unit K4. Specifically, the first end of the detection resistor R0 is electrically connected to the fourth switch unit K4. connection, the second end of the detection resistor R0 is electrically connected to the power supply ground terminal GND. In addition, in other embodiments of the present application, the detection resistor R0 can also be located between the negative electrode of the power supply and the power supply ground terminal GND. Specifically, the second end of the detection resistor R0 is electrically connected to the negative electrode of the power supply, and the first end of the detection resistor R0 The terminal is electrically connected to the power ground terminal GND. At this time, the detection resistor R0 is located outside the chip. In addition, the detection resistor R0 may be a current limiting resistor in this application.

1. When the voltage of the power supply 110 is relatively large, the voltage of the power supply 110 is sufficient to drive the indicator light 120 and the brightness is relatively bright. At this time, the voltage judgment unit 260 judges that the voltage difference on the detection resistor R0 is greater than or equal to the first reference voltage, then the voltage The judgment unit 260 controls the system control circuit 200 to work in the first mode. In the first mode, the indicator light 120 is directly driven by the voltage of the power supply terminal BAT without the need for voltage boosting, which is beneficial to improving the energy utilization rate of the power supply 110 . Moreover, when the voltage of the power supply 110 is relatively low, and the voltage judgment unit 260 judges that the voltage difference is less than the first reference voltage, the voltage judgment unit 260 controls the system control circuit 200 to work in the second mode. In the second mode, the power supply terminal BAT After the voltage is boosted, it is used to drive the indicator light 120, so that even if the voltage of the power supply 110 is relatively low, the indicator light 120 can be normally lit after boosting, and the brightness is relatively bright, which is conducive to the normal use of the indicator light 120, and the indicator light 120 will not appear. The problem of getting darker and darker during use.

2. The power supply voltage range provided by the power supply of the electronic atomization device in this embodiment includes 1.5V-5V. For example, the power supply voltage range provided by the power supply is 1.5V-3.6V, 2.5V-4.2V or 3V-5V, that is, The power supply can use either low-voltage power supply 110 or ordinary power supply 110, that is, the power supply 110 can be mixed, which facilitates the assembly of the electronic atomization device, and there is no need to set corresponding system control circuits 200 according to different power supplies 110. In this embodiment The system control circuit 200 is universal, which can enhance the market competitiveness of the system control circuit 200 . When the electronic atomization device uses the ordinary power supply 110 and the voltage is not too low, the voltage judgment unit 260 judges that the voltage difference between the first end and the second end of the detection resistor R0 is greater than or equal to the first reference voltage, then the voltage judgment unit 260 The unit 260 controls the system control circuit 200 to work in the first mode. In the first mode, the indicator light 120 is directly driven by the voltage of the power supply terminal BAT. At this time, the indicator light 120 is directly driven by the power supply 110 and does not require a voltage boost; when the electronic atomization When the device uses the low-voltage power supply 110 and the voltage is not too high, and the voltage judgment unit 260 judges that the voltage difference is less than the first reference voltage, the voltage judgment unit 260 controls the system control circuit 200 to work in the second mode, and at the second mode power supply end The voltage of the BAT is boosted and used to drive the indicator light 120 to light up, and the brightness is similar to that of the ordinary power supply 110 . Therefore, the electronic atomization device of this embodiment can be used with two specifications of power supply 110. No matter which power supply 110 is used, the electronic atomization device will not be damaged, and the indicator light 120 can also work normally.

3. The output end of the voltage comparison unit 261 of this embodiment is electrically connected to the flip-flop 262. After boosting in the second mode, Due to the existence of the flip-flop 262, the boost can be maintained, and there will be no problem that the voltage comparison unit 261 determines that the voltage difference after the boost is greater than or equal to the first reference voltage and returns to the first mode, thereby avoiding the second mode and the second mode. Switching back and forth between modes causes the problem of the indicator light 120 flashing on and off.

4. In this embodiment, the first switch unit K1 is a MOS tube. MOS tubes are generally manufactured using a low-voltage process of less than or equal to 6V (high-voltage processes have higher costs). This is beneficial to reducing costs. MOS tubes produced by low-voltage processes Its withstand voltage value is relatively low. When the voltage of the power supply 110 is relatively high, if the voltage is still boosted, for example, to twice the voltage of the power supply 110, then in some time periods or times, the control end of the first switching unit K1, the The voltage between the two ends will be relatively large, exceeding the limit parameters of the MOS tube, which may cause damage to the first switching unit K1. In this embodiment, by setting the voltage judgment unit 260, when the voltage difference is relatively high and is greater than or equal to the first reference voltage, the voltage is not boosted. When the voltage difference is relatively low and is less than the first reference voltage, the voltage is boosted. The boosted voltage (generally Lower than 6V) is also lower than the withstand voltage value of the MOS tube, so the two terminals of the first switch unit K1 will not bear a relatively large voltage, the first switch unit K1 will not be easily damaged, and the reliability will not be reduced. At the same time, it can Normal driving indicator light 120. Moreover, the voltage spike that the first switch unit K1 endures when it is turned off will be relatively small, and the first switch unit K1 and the indicator light 120 are not easily damaged.

It should be understood that "plurality" mentioned in this article means two or more. Other embodiments of the present application will be readily apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary technical means in the technical field that are not disclosed in this application. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It should be noted that each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments are referred to each other. Can. As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For relevant details, please refer to the partial description of the method embodiment.

What is disclosed above is only the preferred embodiment of the present application. Of course, it cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

A system control circuit for driving indicator lights, which is characterized by including:

A power supply terminal, a power ground terminal and a switch control unit. The power supply terminal and the power ground terminal are used to electrically connect to the positive and negative poles of the power supply. The switch control unit is electrically connected to the power supply terminal and the power ground terminal respectively. connect;

The first switch unit has a control end electrically connected to the switch control unit, a first end electrically connected to the power supply end, and a second end used to be electrically connected to the indicator light and the first end of the first capacitor;

The second switch unit has a control end electrically connected to the switch control unit, a first end electrically connected to the power supply end, a second end electrically connected to the second end of the first capacitor, and a second end electrically connected to the second end of the first capacitor. The terminal is also indirectly electrically connected to the ground terminal of the power supply;

Wherein, the switch control unit controls the first switch unit to be turned on and the second switch unit to be turned off to charge the first capacitor, and the switch control unit controls the second switch unit to be turned on and the second switch unit is turned off. The first switch unit is turned off so that the potential of the first terminal of the first capacitor is raised for driving the indicator light.
The system control circuit of claim 1, wherein the system control circuit further includes a third switch unit, the control end of which is electrically connected to the switch control unit, and the first end of which is used to connect to the first switch unit. The second end of the capacitor is electrically connected, and the second end is electrically connected to the ground end of the power supply. When the voltage needs to be boosted, the third switch unit is turned on when the first switch unit is turned on. When the first switch unit is turned off, the third switch unit is turned off.
The system control circuit according to claim 1, wherein the switch control unit includes a first drive unit, and the first drive unit is electrically connected to the control end of the first switch unit.
The system control circuit of claim 3, wherein the first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, and a first PMOS tube. and a second PMOS transistor, wherein the input end of the inverter is electrically connected to the control end of the second switching unit, and the output end of the inverter is electrically connected to the control end of the first NMOS transistor, The source of the first NMOS transistor is electrically connected to the ground terminal of the power supply, and its drain is electrically connected to the drain of the first PMOS transistor and the control end of the second PMOS transistor. The control end of the first PMOS transistor is electrically connected to the control end of the first PMOS transistor. The drains of the two NMOS tubes are electrically connected, the source of the first PMOS tube is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power supply ground terminal, and the control terminal of the second NMOS is electrically connected to the The control end of the second switch unit is electrically connected, the drain of the second NMOS transistor is also electrically connected with the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected with the second terminal of the first switch unit, and the second The drain of the NMOS tube is also used to control whether the first switch unit is turned on; or,

The switch control unit also includes a logic control unit, and the input end of the first driving unit is electrically connected to the logic control unit; or,

The first switching unit includes an NMOS tube, the first driving unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the first switching unit, and the second The input end of the boost circuit is electrically connected to the control end of the second switch unit; or,

The switch control unit also includes a logic control unit, the first switch unit includes an NMOS tube, the first drive unit includes a second boost circuit, and the output end of the second boost circuit is connected to the first switch. The control terminal of the unit is electrically connected, and the input terminal of the second boost circuit is electrically connected with the logic control unit.
The system control circuit of claim 1, wherein the switch control unit further includes a second drive unit, and the second drive unit is electrically connected to the control end of the second switch unit.
The system control circuit according to claim 5, wherein the switch control unit further includes a logic control unit, the second switch unit includes a PMOS tube, and the second drive unit includes a third NMOS tube and a third PMOS tube, wherein the source of the third NMOS tube is electrically connected to the ground terminal of the power supply, and the control terminal of the third NMOS tube and the control terminal of the third PMOS tube are both electrically connected to the logic control unit, The drain of the third NMOS transistor is electrically connected to the drain of the third PMOS transistor, the source of the third PMOS transistor is electrically connected to the power supply terminal, and the drain of the third NMOS transistor is also used to control the Whether the second switch unit is turned on.
The system control circuit according to claim 5, characterized in that the system control circuit further includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and the first end of the third switch unit is electrically connected to the switch control unit. is electrically connected to the second end of the first capacitor, and its second end is electrically connected to the ground end of the power supply;

The switch control unit also includes a third driving unit and a logic control unit, and the third driving unit and the third The control end of the switch unit is electrically connected, and the logic control unit is electrically connected to the second driving unit and the third driving unit respectively.
The system control circuit according to claim 7, wherein the third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the fourth NMOS transistor The source of the fourth NMOS transistor is electrically connected to the ground terminal of the power supply. The control end of the fourth NMOS transistor and the control end of the fourth PMOS transistor are both electrically connected to the logic control unit. The drain of the fourth NMOS transistor is electrically connected to the fourth PMOS transistor. The drain of the tube is electrically connected, the source of the fourth PMOS tube is electrically connected to the power supply terminal, and the drain of the fourth NMOS tube is also used to control whether the third switch unit is turned on.
The system control circuit according to claim 7, wherein the logic control unit further includes a first logic gate and a second logic gate, wherein the first input end of the first logic gate is connected to a clock signal, Its third input end is electrically connected to the control end of the third switch unit, and its output end is electrically connected to the second drive unit; the first input end of the second logic gate is electrically connected to the control end of the second switch unit. , its second input end is connected to the clock signal, and its output end is electrically connected to the third driving unit.
The system control circuit according to claim 9, characterized in that the system control circuit further includes a light control unit, the light control unit is used to control whether the indicator light emits light, and the light control unit is connected to the third light control unit. The second input end of a logic gate is electrically connected so that the indicator light is not lit when it is not needed; or,

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate; or,

The system control circuit also includes a light control unit and a clock signal generation unit. The light control unit is used to control whether the indicator light emits light. The clock signal generation unit is used to generate a clock signal. The clock signal generation unit has The enable terminal is electrically connected to the light control unit. When the light control unit is used to control the indicator light to light, the light control unit controls the clock signal generation unit to work to generate a clock signal. When the light control unit The light-on control unit is used to control the clock signal generating unit to stop working when the indicator light goes out.
The system control circuit according to any one of claims 1 to 10, characterized in that the system control circuit includes a power supply judgment unit, which is electrically connected to the power supply terminal and the power ground terminal respectively for obtaining the representative power supply. The detection voltage of the power supply end voltage, the power supply judgment unit is used to determine whether the detection voltage is greater than the first reference voltage, the power supply judgment unit is electrically connected to the switch control unit, when the power supply judgment unit determines that the detection voltage is greater than the first reference voltage When the reference voltage is used, the power supply judgment unit outputs a first signal to the switch control unit, and the switch control unit controls the first switch unit to be normally on and the second switch unit to be normally off; when the power supply judgment unit judges and detects When the voltage is less than the first reference voltage, the power supply judgment unit outputs a second signal to the switch control unit, and the switch control unit is used to control the potential of the first end of the first capacitor to be raised to drive the the indicator light.
The system control circuit according to claim 11, characterized in that the power supply judgment unit includes a voltage comparison unit, a first input terminal of the voltage comparison unit is connected to the detection voltage, and a second input terminal of the comparison unit is connected to Enter a first reference voltage, and the output end of the voltage comparison unit is electrically connected to the switch control unit. When the detection voltage is greater than the first reference voltage, the system control circuit outputs a first signal to the switch control unit. unit, when the detection voltage is less than the first reference voltage, the system control circuit outputs a second signal to the switch control unit.
The system control circuit according to claim 12, characterized in that the system control circuit includes a light control unit, the light control unit is used to control whether the indicator light emits light, the light control unit compares the voltage with the The enable end of the unit is electrically connected to control whether the voltage comparison unit works. When the light control unit is used to control the indicator light to light, the light control unit controls the voltage comparison unit to work.
The system control circuit according to any one of claims 1 to 10, characterized in that the system control circuit further includes a low voltage dropout linear regulator, and the input terminal of the low voltage dropout linear regulator is electrically connected to the power supply terminal. connection, its output end is electrically connected to the first end of the first switching unit and the first end of the second switching unit, and the low voltage dropout linear regulator is used to make the voltage at its output end less than or equal to the preset voltage. .
The system control circuit according to claim 14, wherein the low voltage dropout linear regulator includes an operational amplifier, a first sampling resistor, a second sampling resistor, and an adjustment tube, wherein the first end of the adjustment tube is the input end, the second end of the adjustment tube is the output end, the control end of the adjustment tube is electrically connected to the output end of the operational amplifier, and the non-directional end of the operational amplifier is connected to the second reference voltage, so The reverse end of the operational amplifier is electrically connected to the first end of the second sampling resistor, the first end of the first sampling resistor is electrically connected to the second end of the adjustment tube, and the first sampling resistor The second end of the resistor is electrically connected to the first end of the second sampling resistor, and the second end of the second sampling resistor is electrically connected to the power ground end.
The system control circuit according to claim 15, wherein the adjustment tube includes a transistor or a MOS tube; or,

The range of the preset voltage is 1.5V-3V; or,

The system control circuit includes a light control unit, which is used to control whether the indicator light emits light. The light control unit is electrically connected to the enable end of the operational amplifier to control whether the operational amplifier works. The light-on control unit is used to control the operation of the operational amplifier when the indicator light is turned on. The light-on control unit controls the operation of the operational amplifier when the indicator light is turned off.
The system control circuit according to any one of claims 1 to 10, characterized in that the system control circuit is located on the same chip, the power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. pin, the system control circuit also includes a first light-emitting pin, a second light-emitting pin and a third light-emitting pin. The first light-emitting pin is used to electrically connect with the first end of the first capacitor and the first end of the indicator light. connection, the second light-emitting pin is used to electrically connect with the second end of the first capacitor and the second end of the second switch unit, and the third light-emitting pin is used to electrically connect with the second end of the indicator light; or,

The system control circuit is located on the same chip, the power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. The system control circuit also includes a first light-emitting pin and a second light-emitting pin. and a third light-emitting pin. The first light-emitting pin is used to electrically connect with the first end of the first capacitor and the second end of the first switch unit. The second light-emitting pin is used with the second end of the first capacitor and the second end of the first switch unit. The second end of the second switch unit is electrically connected, the third light-emitting pin is used for electrical connection with the first end of the indicator light and the second end of the first switch unit, and the power ground pin is used for electrical connection with the second end of the indicator light. electrical connection; or,

When the first switch unit is turned on, the voltage between its source and drain is less than 0.1V; or,

The system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The system control circuit also includes a fourth switch unit or a current source. The fourth switch unit or the A current source is used to be connected in series with the indicator light, and the fourth switch unit or the control end of the current source is electrically connected to the light control unit; or,

The first switch unit is manufactured by a low-voltage process less than or equal to 6V; or,

The switch control unit also includes a logic control unit, which is electrically connected to the control terminal of the second switch unit.
An indication component, characterized by comprising: the system control circuit according to any one of claims 1-17;

An indicator light, which is electrically connected to the second end of the first switch unit;

A first capacitor, a first end of which is electrically connected to the second end of the first switching unit, and a second end of which is electrically connected to the second end of the second switching unit;

The positive and negative poles of the power supply are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.
The indication component according to claim 18, wherein the power supply voltage range provided by the power supply includes 1.5V-3.6V; or,

The power supply includes a battery core; or,

The indicator light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V.
An electronic atomization device, characterized by comprising: the system control circuit according to any one of claims 1-17 or the indication component according to any one of claims 18 and 19.
A system control circuit for driving indicator lights, which is characterized by including:

A power supply terminal and a power ground terminal, which are used to electrically connect to the positive and negative poles of the power supply;

A power supply judgment unit, which is electrically connected to the power supply terminal and the power supply ground terminal respectively for obtaining a detection voltage that represents the voltage of the power supply terminal. The power supply judgment unit is used to determine whether the detection voltage is greater than the first reference voltage. When the power supply When the judgment unit judges that the detection voltage is greater than the first reference voltage, the system control circuit operates in the first mode; when the power supply judgment unit judges that the detection voltage is less than the first reference voltage, the system control circuit operates in the second mode. model;

Wherein, in the first mode, the voltage of the power supply terminal is directly used to drive the indicator light, and in the second mode, the voltage of the power supply terminal is directly used to drive the indicator light. The voltage at the electrical terminal is boosted and used to drive the indicator light.
The system control circuit according to claim 21, characterized in that the power supply judgment unit includes a voltage comparison unit, a first input terminal of the voltage comparison unit is connected to the detection voltage, and a second input terminal of the comparison unit is connected to Enter a first reference voltage. When the detection voltage is greater than the first reference voltage, the power supply judgment unit outputs a first signal to make the system control circuit operate in the first mode. When the detection voltage is less than the first reference voltage, When a reference sub-voltage is provided, the power supply judgment unit outputs a second signal to cause the system control circuit to operate in the second mode.
The system control circuit according to claim 22, characterized in that the system control circuit includes a light control unit, the light control unit is used to control whether the indicator light emits light, the light control unit compares the voltage with the The enable end of the unit is electrically connected to control whether the voltage comparison unit works. When the light-on control unit is used to control the indicator light to light up, the light-on control unit controls the voltage comparison unit to work. When the light-on control unit is used to control the indicator light, When the control indicator light goes out, the light-on control unit controls the voltage comparison unit to stop working.
The system control circuit according to claim 22, wherein the power supply judgment unit further includes a first voltage dividing resistor and a second voltage dividing resistor, wherein the first end of the first voltage dividing resistor is connected to the power supply. terminals are electrically connected, the second terminal of the first voltage dividing resistor is electrically connected to the first terminal of the second voltage dividing resistor, the second terminal of the second voltage dividing resistor is electrically connected to the power ground terminal, and the first voltage dividing resistor The second terminal is also electrically connected to the first input terminal of the voltage comparison unit to output the detection voltage.
The system control circuit according to claim 21, characterized in that the system control circuit includes:

A first power supply unit, a first end of which is electrically connected to the power supply end, and a second end of which is used to be electrically connected to the indicator light, and the first power supply unit is used to drive the indicator light with the voltage of the power supply end;

The second power supply unit has a first end that is electrically connected to the power supply end, and a second end that is used to electrically connect with the indicator light. The second power supply unit is used to boost the voltage of the power supply end;

In the first mode, the first power supply unit works to make the voltage of the power supply terminal drive the indicator light. In the second mode, the second power supply unit works to boost the voltage of the power supply terminal to drive the indicator light.
The system control circuit of claim 25, wherein the second power supply unit includes the first power supply unit.
The system control circuit according to claim 26, characterized in that the system control circuit further includes a switch control unit, the power supply judgment unit is electrically connected to the switch control unit, and the switch control unit is respectively connected to the power supply. The power supply terminal and the power ground terminal are electrically connected;

The first power supply unit includes a first switch unit. The control end of the first switch unit is electrically connected to the switch control unit. The first end of the first switch unit is electrically connected to the power supply end. The second end of the first switch unit is used to connect to the indicator light. , the first terminal of the first capacitor is electrically connected;

The second power supply unit includes a second switch unit, the control end of which is electrically connected to the switch control unit, the first end of which is electrically connected to the power supply end, and the second end of which is used to connect to the second capacitor of the first capacitor. terminal is electrically connected, and its second terminal is also indirectly electrically connected to the ground terminal of the power supply;

Wherein, in the first mode, the switch control unit controls the first switch unit to be always on and the second switch unit to be always off. In the second mode, during the first time period, the switch control unit controls the first switch unit to be on. The second switch unit is turned on and the second switch unit is turned off to charge the first capacitor. In the second time period, the switch control unit controls the second switch unit to be turned on and the first switch unit is turned off to charge the first capacitor. The potential of the first terminal is raised for driving the indicator light.
The system control circuit according to claim 25, characterized in that the system control circuit further includes a switch control unit, the switch control unit is electrically connected to the power supply judgment unit, and the switch control unit is respectively connected to the power supply. The power supply terminal and the power ground terminal are electrically connected;

The first power supply unit includes a fifth switch unit. The control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply end. The second end of the fifth switch unit is used to connect to the indicator light. electrical connection;

The second power supply unit includes a first voltage boosting unit, a first end of the first voltage boosting unit is electrically connected to the power supply terminal, and a second end of the first voltage boosting unit is used to be electrically connected to an indicator light. The control end of the pressure unit is electrically connected to the switch control unit;

Wherein, in the first mode, the switch control unit controls the fifth switch unit to be normally turned on, and in the second mode, the switch control unit controls the first boost unit to operate so that the voltage at the power supply end is boosted for use. To drive the indicator light, and the switch control unit controls the fifth switch unit to be normally turned off.
The system control circuit according to claim 28, characterized in that the first boost unit includes a second switching unit and a first switching unit, wherein the first end of the second switching unit, the first The first end of the switch unit is electrically connected to the power supply end of the power supply, and the second end of the first switch unit is used to be electrically connected to the first end of the first capacitor and the indicator light. The control of the first switch unit The second end of the second switch unit is electrically connected to the switch control unit, the second end of the second switch unit is electrically connected to the second end of the first capacitor, and the second end of the second switch unit is electrically connected to the second end of the first capacitor. Indirectly electrically connected to the ground terminal of the power supply;

In the second mode, in the first time period, the switch control unit controls the first switch unit to be turned on and the second switch unit to be turned off to charge the first capacitor, and in the second time period, the switch control unit controls The second switch unit is turned on and the first switch unit is turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light.
The system control circuit according to claim 27 or 29, characterized in that the system control circuit further includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and the first The end is used to be electrically connected to the second end of the first capacitor, and the second end is electrically connected to the power ground end, wherein when the voltage needs to be boosted and the first switch unit is turned on, the third end is electrically connected to the ground end of the power supply. The switch unit is turned on, and when the first switch unit is turned off, the third switch unit is turned off.
The system control circuit according to claim 27 or 29, wherein the switch control unit includes a first drive unit, the first drive unit is electrically connected to the control end of the first switch unit; and,

The first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, a first PMOS tube, and a second PMOS tube, wherein the input of the inverter The terminal is electrically connected to the control terminal of the second switch unit, the output terminal of the inverter is electrically connected to the control terminal of the first NMOS tube, and the source of the first NMOS tube is electrically connected to the power ground terminal. , its drain is electrically connected to the drain of the first PMOS transistor and the control end of the second PMOS transistor, the control end of the first PMOS transistor is electrically connected to the drain of the second NMOS transistor, and the source of the first PMOS transistor is electrically connected. The pole of the second NMOS is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, the control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit, and the second NMOS tube The drain is also electrically connected to the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected to the second terminal of the first switch unit, and the drain of the second NMOS transistor is also used to control whether the first switch unit is conductive. pass; or,

The switch control unit also includes a logic control unit, and the input end of the first driving unit is electrically connected to the logic control unit; or,

The first switching unit includes an NMOS tube, the first driving unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the first switching unit, and the second The input end of the boost circuit is electrically connected to the control end of the second switch unit; or,

The switch control unit also includes a logic control unit, the first switch unit includes an NMOS tube, the first drive unit includes a second boost circuit, and the output end of the second boost circuit is connected to the first switch. The control end of the unit is electrically connected, and the input end of the second boost circuit is electrically connected to the logic control unit; or,

The first switch unit is manufactured by a low-voltage process of less than or equal to 6V.
The system control circuit of claim 27 or 29, wherein the switch control unit further includes a second drive unit, the second drive unit is electrically connected to the control end of the second switch unit; The switch control unit also includes a logic control unit, the second switch unit includes a PMOS transistor, the second drive unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is connected to the power supply ground. terminals are electrically connected, the control terminal of the third NMOS tube and the control terminal of the third PMOS tube are both electrically connected to the logic control unit, and the drain of the third NMOS tube and the drain of the third PMOS tube Electrically connected, the source of the third PMOS tube is electrically connected to the power supply terminal, and the drain of the third NMOS tube is also used to control whether the second switch unit is turned on; or,

The switch control unit also includes a logic control unit, which is electrically connected to the control terminal of the second switch unit.
The system control circuit according to claim 32, characterized in that the system control circuit further includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and the first end of the third switch unit is electrically connected to the switch control unit. The second end of the second switch unit is electrically connected, and its second end is electrically connected to the ground end of the power supply;

The switch control unit also includes a third drive unit, and the control of the third drive unit and the third switch unit terminals are electrically connected, and the logic control unit is electrically connected to the second driving unit and the third driving unit respectively;

The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, and the fourth NMOS transistor The control end of the tube and the control end of the fourth PMOS tube are both electrically connected to the logic control unit, the drain of the fourth NMOS tube is electrically connected to the drain of the fourth PMOS tube, and the source of the fourth PMOS tube The drain electrode of the fourth NMOS transistor is also used to control whether the third switch unit is turned on.
The system control circuit according to claim 33, wherein the logic control unit further includes a first logic gate and a second logic gate, wherein the first input end of the first logic gate is connected to a clock signal, Its third input end is electrically connected to the control end of the third switch unit, and its output end is electrically connected to the second drive unit; the first input end of the second logic gate is electrically connected to the control end of the second switch unit. , its second input end is connected to the clock signal, and its output end is electrically connected to the third driving unit.
The system control circuit according to claim 34, characterized in that the system control circuit further includes a light control unit, the light control unit is used to control whether the indicator light emits light, and the light control unit is connected to the third light control unit. The second input end of a logic gate is electrically connected so that the indicator light is not lit when it is not needed; or,

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate; or,

The system control circuit also includes a clock signal generating unit, the clock signal generating unit is used to generate a clock signal, and the clock signal generating unit stops working in the first mode; or,

The system control circuit also includes a light control unit and a clock signal generation unit. The light control unit is used to control whether the indicator light emits light. The clock signal generation unit is used to generate a clock signal. The clock signal generation unit has The enable terminal is electrically connected to the light control unit. When the light control unit is used to control the indicator light to light, the light control unit controls the clock signal generation unit to work to generate a clock signal. When the light control unit The light-on control unit is used to control the clock signal generating unit to stop working when the indicator light goes out.
The system control circuit according to any one of claims 21-29, characterized in that the system control circuit is located on the same chip; or,

The system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The system control circuit also includes a fourth switch unit or a current source. The fourth switch unit or the The current source is used to be connected in series with the indicator light, and the fourth switch unit or the control end of the current source is electrically connected to the light control unit.
An indication component, characterized by comprising: the system control circuit according to any one of claims 21-36;

An indicator light, which is electrically connected to the system control circuit;

The positive and negative poles of the power supply are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.
The indication assembly according to claim 37, wherein the power supply voltage range provided by the power supply includes 1.5V-5V; or,

The indication component further includes a first capacitor, the first end of the first capacitor and the indicator light are both electrically connected to the same end of the system control circuit, and the second end of the first capacitor is indirectly electrically connected to the power ground end. connection; or,

The power supply includes a battery core; or,

The indicator light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V.
An electronic atomization device, characterized by comprising: a system control circuit as described in any one of claims 21-36 or an indication component as described in any one of claims 17 and 18.
A system control circuit for driving indicator lights, which is characterized by including:

A power supply terminal and a power ground terminal, which are used to electrically connect to the positive and negative poles of the power supply;

A step-down unit, which is electrically connected to the power supply end and the power ground end, and is used to make the voltage at the output end of the step-down unit less than or equal to the preset voltage;

The input end of the first boost unit is electrically connected to the output end of the buck unit, and its output end is used to electrically connect with the indicator light. The first boost unit is used to boost the voltage at the output end of the buck unit, to drive the indicator light.
The system control circuit according to claim 40, characterized in that the voltage reduction unit includes a low voltage dropout linear regulator, the input end of the low voltage dropout linear regulator is electrically connected to the power supply end, and the output end of the low voltage dropout linear regulator is electrically connected to the power supply end. The first boost unit is electrically connected, and the low dropout linear regulator is used to make the voltage at the output end less than or equal to a preset voltage.
The system control circuit according to claim 41, wherein the low-voltage dropout linear regulator includes an operational amplifier, a first sampling resistor, a second sampling resistor, and an adjustment tube, wherein the first end of the adjustment tube is the input end of the low voltage dropout linear regulator, the second end of the adjustment tube is the output end of the low voltage dropout linear regulator, and the control end of the adjustment tube is electrically connected to the output end of the operational amplifier. connection, the non-inverting terminal of the operational amplifier is connected to the second reference voltage, the reverse terminal of the operational amplifier is electrically connected to the first terminal of the second sampling resistor, and the first terminal of the first sampling resistor is connected to the second reference voltage. The second end of the adjustment tube is electrically connected, the second end of the first sampling resistor is electrically connected to the first end of the second sampling resistor, and the second end of the second sampling resistor is electrically connected to the power ground terminal. connect.
The system control circuit according to claim 42, wherein the adjustment tube includes a transistor or a MOS tube; or the preset voltage range is 1.5V-3V.
The system control circuit according to claim 42, characterized in that the system control circuit includes a light control unit, the light control unit is used to control whether the indicator light emits light, the light control unit and the operational amplifier The enable end is electrically connected to control whether the operational amplifier works. When the light-on control unit is used to control the indicator light to light up, the light-on control unit controls the operation of the operational amplifier. When the light-on control unit is used to control the indicator light When it goes out, the light-on control unit controls the operational amplifier to stop working.
The system control circuit according to claim 40, wherein the voltage reducing unit includes a Buck circuit; and/or the first voltage boosting unit includes a boost circuit.
The system control circuit according to any one of claims 40 to 45, characterized in that the system circuit includes a switch control unit, and the switch control unit is electrically connected to the power supply terminal and the power ground terminal respectively;

The first boost unit includes:

The first switch unit has a control end electrically connected to the switch control unit, a first end electrically connected to the power supply end, and a second end used to be electrically connected to the indicator light and the first end of the first capacitor;

The second switch unit has a control end electrically connected to the switch control unit, a first end electrically connected to the power supply end, a second end electrically connected to the second end of the first capacitor, and a second end electrically connected to the second end of the first capacitor. The terminal is also indirectly electrically connected to the ground terminal of the power supply;

Wherein, the switch control unit controls the first switch unit to be on and the second switch unit to be off to charge the first capacitor, and the switch control unit controls the second switch unit to be on and the first switch unit to be on. cut off so that the potential of the first end of the first capacitor is raised for driving the indicator light.
The system control circuit of claim 46, wherein the system control circuit further includes a third switch unit, the control end of which is electrically connected to the switch control unit, and the first end of which is used to connect to the first switch unit. The second end of the capacitor is electrically connected, and the second end is electrically connected to the ground end of the power supply. When the voltage needs to be boosted, the third switch unit is turned on when the first switch unit is turned on. When the first switch unit is turned off, the third switch unit is turned off.
The system control circuit according to claim 46, wherein the switch control unit includes a first drive unit, the first drive unit is electrically connected to the control end of the first switch unit; and,

The first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, a first PMOS tube, and a second PMOS tube, wherein the input of the inverter The terminal is electrically connected to the control terminal of the second switch unit, the output terminal of the inverter is electrically connected to the control terminal of the first NMOS tube, and the source of the first NMOS tube is electrically connected to the power ground terminal. , its drain is electrically connected to the drain of the first PMOS transistor and the control end of the second PMOS transistor, the control end of the first PMOS transistor is electrically connected to the drain of the second NMOS transistor, and the source of the first PMOS transistor is electrically connected. The pole of the second NMOS is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, the control terminal of the second NMOS is electrically connected to the control terminal of the second switch unit, and the second NMOS tube The drain is also electrically connected to the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected to the second terminal of the first switch unit, and the drain of the second NMOS transistor is also used to control whether the first switch unit is conductive. pass; or,

The switch control unit also includes a logic control unit, and the input end of the first driving unit is electrically connected to the logic control unit; or,

The first switching unit includes an NMOS transistor, the first driving unit includes a second boost circuit, and the second boost circuit The output end of the circuit is electrically connected to the control end of the first switching unit, and the input end of the second boost circuit is electrically connected to the control end of the second switching unit; or,

The switch control unit also includes a logic control unit, the first switch unit includes an NMOS tube, the first drive unit includes a second boost circuit, and the output end of the second boost circuit is connected to the first switch. The control end of the unit is electrically connected, and the input end of the second boost circuit is electrically connected to the logic control unit; or,

The first switch unit is manufactured by a low-voltage process of less than or equal to 6V.
The system control circuit of claim 46, wherein the switch control unit further includes a second drive unit, the second drive unit is electrically connected to the control end of the second switch unit; the switch control unit The unit also includes a logic control unit, the second switching unit includes a PMOS transistor, the second driving unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is electrically connected to the power supply ground terminal. connection, the control end of the third NMOS transistor and the control end of the third PMOS transistor are electrically connected to the logic control unit, the drain of the third NMOS transistor is electrically connected to the drain of the third PMOS transistor, and the The source of the third PMOS tube is electrically connected to the power supply terminal, and the drain of the third NMOS tube is also used to control whether the second switch unit is turned on; or,

The switch control unit also includes a logic control unit, which is electrically connected to the control terminal of the second switch unit.
The system control circuit according to claim 49, characterized in that the system control circuit further includes a third switch unit, the control end of which is electrically connected to the switch control unit, and the first end of which is electrically connected to the second switch unit. The second end is electrically connected, and the second end is electrically connected to the ground end of the power supply;

The switch control unit also includes a third drive unit, the third drive unit is electrically connected to the control terminal of the third switch unit, and the logic control unit is electrically connected to the second drive unit and the third drive unit respectively. connect;

The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, and the fourth NMOS transistor The control end of the tube and the control end of the fourth PMOS tube are both electrically connected to the logic control unit, the drain of the fourth NMOS tube is electrically connected to the drain of the fourth PMOS tube, and the source of the fourth PMOS tube The drain electrode of the fourth NMOS transistor is also used to control whether the third switch unit is turned on.
The system control circuit according to claim 50, wherein the logic control unit further includes a first logic gate and a second logic gate, wherein the first input end of the first logic gate is connected to a clock signal, Its third input end is electrically connected to the control end of the third switch unit, and its output end is electrically connected to the second drive unit; the first input end of the second logic gate is electrically connected to the control end of the second switch unit. , its second input end is connected to the clock signal, and its output end is electrically connected to the third driving unit.
The system control circuit according to claim 51, characterized in that the system control circuit further includes a light control unit, the light control unit is used to control whether the indicator light emits light, and the light control unit is connected to the third light control unit. The second input end of a logic gate is electrically connected so that the indicator light is not lit when it is not needed; or,

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate; or,

The system control circuit also includes a light control unit and a clock signal generation unit. The light control unit is used to control whether the indicator light emits light. The clock signal generation unit is used to generate a clock signal. The clock signal generation unit has The enable terminal is electrically connected to the light control unit. When the light control unit is used to control the indicator light to light, the light control unit controls the clock signal generation unit to work to generate a clock signal. When the light control unit The light-on control unit is used to control the clock signal generating unit to stop working when the indicator light goes out.
The system control circuit according to any one of claims 40 to 45, characterized in that the system control circuit is located on the same chip, the power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. pin, the system control circuit further includes a first light-emitting pin, the first light-emitting pin is electrically connected to the output end of the first boost unit, and the first light-emitting pin is used to electrically connect with the indicator light; or ,

The system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The system control circuit also includes a fourth switch unit or a current source. The fourth switch unit or the The current source is used to be connected in series with the indicator light, and the fourth switch unit or the control end of the current source is electrically connected to the light control unit.
An indication component, characterized in that it includes:

The system control circuit according to any one of claims 40-53;

An indicator light, which is electrically connected to the first boost unit of the system control circuit;

Power supply, its positive and negative poles are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.
The indication assembly according to claim 54, wherein the supply voltage provided by the power supply ranges from 1.5V to 5V; or,

The indication component also includes a first capacitor, the first end of the first capacitor and the indicator light are both electrically connected to the same end of the first boost unit, and the second end of the first capacitor is indirectly connected to the power supply ground. terminal electrical connection; or,

The indicator light is an LED light, the LED light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V; or,

The power supply includes battery cells.
An electronic atomization device, characterized by comprising: a system control circuit as described in any one of claims 40-53 or an indication component as described in any one of claims 54 and 55.
A system control circuit for driving the indicator light of an electronic atomization device, which is characterized by including:

A power supply terminal, a power ground terminal, and a heating control unit. The power supply terminal and power ground terminal are used to electrically connect to the positive and negative poles of the power supply;

The atomizing terminal is used to electrically connect with the first terminal of the heating element, the power ground terminal is used to electrically connect with the second terminal of the heating element, and the atomizing terminal is used to electrically connect with the second terminal of the first capacitor. connect;

The first switch unit has a first end electrically connected to the power supply end, a second end electrically connected to the atomization end, and a control end electrically connected to the heating control unit;

The second one-way conducting element has a first end electrically connected to the power supply end, and a second end used to be electrically connected to the first end of the first capacitor and the indicator light;

Wherein, the first switch unit is turned off and the second one-way conductive element is turned on to charge the first capacitor, and the first switch unit is turned on and the second one-way conductive element is turned off to charge the first capacitor. The potential of the first terminal of the first capacitor is raised for driving the indicator light.
The system control circuit according to claim 57, characterized in that the second one-way conduction element includes a second switch unit, the control end of the second switch unit is electrically connected to the heating control unit, and the heating unit The control unit controls the first switch unit to be turned off and the second switch unit to be turned on to charge the first capacitor, and the heating control unit controls the first switch unit to be turned on and the second switch unit to be turned off to charge the first capacitor. The potential of the first terminal of the first capacitor is raised for driving the indicator light.
The system control circuit according to claim 58, wherein the heating control unit includes a second drive unit, and the output end of the second drive unit is used to control whether the second switch unit is turned on.
The system control circuit according to claim 59, wherein the second switch unit includes a PMOS tube, and the second drive unit includes an inverter, a second NMOS tube, a third NMOS tube, and a second PMOS tube. and a third PMOS transistor, wherein the input end of the inverter is electrically connected to the control end of the first switching unit, and the output end of the inverter is electrically connected to the control end of the second NMOS transistor, The source of the second NMOS transistor is electrically connected to the ground terminal of the power supply, and its drain is electrically connected to the drain of the second PMOS transistor and the control end of the third PMOS transistor respectively. The control end of the second PMOS transistor is electrically connected to the third PMOS transistor. The drains of the three NMOS tubes are electrically connected, the source of the second PMOS tube is electrically connected to the second terminal of the second switch unit, the source of the third NMOS is electrically connected to the power ground terminal, and the control terminal of the third NMOS is electrically connected to the The control end of the first switch unit is electrically connected, the drain of the third NMOS transistor is also electrically connected to the drain of the third PMOS transistor, the source of the third PMOS transistor is electrically connected to the second end of the first switch unit, and the third The drain of the NMOS tube is also used to control whether the second switch unit is turned on; or,

The heating control unit also includes a heating logic unit, and the input end of the second driving unit is electrically connected to the heating logic unit; or,

The second switch unit includes an NMOS transistor, the second drive unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the second switch unit, and the second The input end of the driving unit is electrically connected to the control end of the first switch unit; or,

The heating control unit also includes a heating logic unit, the second switch unit includes an NMOS tube, and the second driver The unit includes a second boost circuit, the output end of the second boost circuit is electrically connected to the control end of the second switch unit, and the input end of the second drive unit is electrically connected to the heating logic unit; or ,

When the second switch unit is turned on, the voltage between its source and drain is less than 0.1V.
The system control circuit according to claim 57, wherein the second one-way conduction element includes a diode, the anode of the diode is the first end of the second one-way conduction element, and the cathode of the diode is the second end of the second one-way conductive element.
The system control circuit according to any one of claims 57-61, characterized in that the first switch unit includes a PMOS tube, the source of the PMOS tube is electrically connected to the power supply terminal, and the drain of the PMOS tube The pole is electrically connected to the atomization end, and the control end of the PMOS tube is electrically connected to the heating control unit; or,

The system control circuit also includes a suction detection unit and a suction detection terminal. The suction detection terminal is used to be electrically connected to the air flow sensor. The suction detection unit is electrically connected to the suction detection terminal and the heating control unit respectively. connection, when the suction detection unit determines that the electronic atomization device is in a suction state, the suction detection unit outputs a first signal to the heating control unit, and when the suction detection unit determines that the electronic atomization device is in a non-smoking state, the suction detection unit outputs a first signal to the heating control unit. In the suction state, the suction detection unit sends a second signal to the heating control unit. When the heating control unit receives the first signal, the heating control unit outputs a duty cycle signal to the first switch unit. When the heating control unit receives the second signal, the heating control unit controls the first switch unit to be normally turned off.
The system control circuit according to any one of claims 57-61, characterized in that the system control circuit is located on the same chip or the circuits of the system control circuit except the first switch unit are located on the same chip, so The power supply end is a power supply pin, the power ground end is a power ground pin, the atomization end is an atomization pin, and the system control circuit also includes a first light-emitting pin and a second light-emitting pin. , the first light-emitting pin is used to be electrically connected to the first end of the first capacitor, the first end of the indicator light, and the second end of the second one-way conductive element, and the second light-emitting pin is used to be connected to the second end of the indicator light. terminal electrical connection; or,

The system control circuit is located on the same chip or the circuits of the system control circuit except the first switch unit are located on the same chip. The power supply terminal is a power supply pin, and the power ground terminal is a power ground pin. , the atomization end is an atomization pin, and the system control circuit also includes a first light-emitting pin and a second light-emitting pin. The first light-emitting pin is used to communicate with the first end of the first capacitor and the second single be electrically connected to the second end of the conductive element, the second light-emitting pin is used to be electrically connected to the first end of the indicator light, and the power ground pin is used to be electrically connected to the second end of the indicator light; or,

The system control circuit also includes a light control unit, which is used to control whether the indicator light emits light. The system control circuit also includes a third switch unit or a current source. The third switch unit or the The current source is used to be connected in series with the indicator light, and the third switch unit or the control end of the current source is electrically connected to the light control unit; when the electronic atomization device is in the suction state, the third switch unit or the control end of the current source is electrically connected to the light control unit. The switch unit and the first switch unit are turned on or off synchronously, or when the electronic atomization device is in the suction state and the first switch unit is turned on, the current source works synchronously and the first switch unit is turned on or off synchronously. The current source does not work synchronously when the switch unit is turned off, or when the electronic atomization device is in the suction state, the conduction time of the first switch unit is greater than the conduction time of the third switch unit, Alternatively, when the electronic atomization device is in the puffing state, the conduction time of the first switch unit is greater than the working time of the current source.
An indication component of an electronic atomization device, characterized by comprising:

The system control circuit according to any one of claims 57-63;

An indicator light, which is electrically connected to the second end of the second one-way conductive element;

A first capacitor, the first end of which is electrically connected to the second end of the second unidirectional conduction element, and the second end of which is electrically connected to the atomization end;

The positive and negative poles of the power supply are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.
The indication component according to claim 64, characterized in that the power supply is a battery core, and the power supply voltage range provided by the battery core includes 1.5V-3.6V; or,

The indicator light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V.
An electronic atomization device, characterized by comprising: a system control system as described in any one of claims 57-63 Circuit or indication component as claimed in any one of claims 64 and 65;

A heating element, the first end of which is electrically connected to the atomization end, and the second end of which is electrically connected to the ground end of the power supply;

a containing device which is hollow for containing liquid;

Wherein, the heating element is in contact with the liquid in the containing device, and when the heating control unit controls the first switch unit to be turned on, the heating element generates heat to atomize the liquid.
A system control circuit for driving indicator lights, which is characterized by including:

A power supply terminal and a power ground terminal, which are used to electrically connect to the positive and negative poles of the power supply;

The first MOS tube has its first end electrically connected to the power supply end or the power supply ground end, and its second end is used to be connected in series with the indicator light;

A voltage judgment unit, which is electrically connected to the first end and the second end of the first MOS transistor for obtaining the voltage of the first end and the voltage of the second end. When the first MOS transistor is turned on, the voltage judgment unit Used to determine whether the voltage difference between the first terminal and the second terminal is greater than or equal to the first reference voltage. When the voltage determination unit determines that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first A mode, when the voltage judgment unit judges that the voltage difference is less than the first reference voltage, the system control circuit operates in the second mode;

Wherein, in the first mode, the voltage of the power supply terminal is directly used to drive the indicator light, and in the second mode, the voltage of the power supply terminal is boosted and used to drive the indicator light.
The system control circuit according to claim 67, wherein the voltage judgment unit includes a voltage comparison unit, the first input end of the voltage comparison unit is electrically connected to the first end of the first MOS tube, and the voltage The second input terminal of the comparison unit is electrically connected to the second terminal of the first MOS tube. The voltage comparison unit obtains the voltage across the first MOS tube through the first input terminal and the second input terminal. When the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit outputs a first signal to cause the system control circuit to operate in the first mode; when the voltage difference is less than the first reference voltage, the voltage comparison unit outputs The second signal causes the system control circuit to operate in the second mode.
The system control circuit according to claim 68, characterized in that the voltage judgment unit further includes a flip-flop, the flip-flop is electrically connected to the output end of the voltage comparison unit, and when the flip-flop receives the second When the signal is generated, the flip-flop outputs a second driving signal, so that the system circuit operates in the second mode.
The system control circuit of claim 69, wherein when the flip-flop receives a signal from the voltage comparison unit that changes from the second signal to the first signal, the flip-flop continues to output the second driving signal. , so that the system circuit continues to work in the second mode.
The system control circuit according to claim 68, characterized in that the system control circuit includes a light control unit and a trigger, the light control unit is used to control whether the indicator light emits light, and the trigger is respectively connected to the The output end of the voltage comparison unit and the light control unit are electrically connected. When the light control unit is used to control the indicator light to go out, the light control unit outputs an extinguishing signal to the trigger. After receiving the extinguishing signal, the trigger transmits the first A driving signal to make the system circuit operate in the first mode.
The system control circuit according to claim 68, characterized in that the system control circuit includes a light control unit and a trigger, the light control unit is used to control whether the indicator light emits light, and the trigger is respectively connected to the The output end of the voltage comparison unit and the light control unit are electrically connected. The light control unit is also used to control whether the first MOS tube is turned on. When the light control unit controls the first MOS tube to be turned on and the voltage difference is greater than Or when it is equal to the first reference voltage, the voltage comparison unit outputs a first signal. After the flip-flop receives the first signal, the flip-flop outputs a first driving signal so that the system circuit operates in the first mode. .
The system control circuit according to claim 72, characterized in that when the light control unit controls the first MOS transistor to turn on, when the voltage difference changes from greater than or equal to the first reference voltage to less than the first reference voltage, When there is a reference voltage, the voltage comparison unit outputs a second signal, and the flip-flop outputs a second driving signal after receiving the second signal, so that the system circuit operates in the second mode.
The system control circuit according to claim 67, characterized in that the system control circuit includes a current source and a light control unit, the light control unit is used to control whether the indicator light emits light, the current source includes the The first MOS tube, the light control unit controls whether the current source is working; or,

The system control circuit includes a light control unit. The light control unit is used to control whether the indicator light emits light. The first MOS tube is a switching tube. The control end of the first MOS tube is connected to the light control unit. Electrical connection.
The system control circuit according to any one of claims 67-74, characterized in that the system control circuit includes:

The first power supply unit has a first end that is electrically connected to the power supply end, and a second end that is used to electrically connect with the indicator light or the first end of the first MOS tube. The first power supply unit is used to adjust the voltage of the power supply end. Driving indicator light;

The second power supply unit has a first end that is electrically connected to the power supply end, and a second end that is used to electrically connect with the indicator light or the first end of the first MOS tube. The second power supply unit is used to adjust the voltage of the power supply end. Boost;

In the first mode, the first power supply unit works to make the voltage of the power supply terminal drive the indicator light. In the second mode, the second power supply unit works to boost the voltage of the power supply terminal to drive the indicator light.
The system control circuit according to claim 75, wherein the second power supply unit includes the first power supply unit;

The system control circuit also includes a first driving unit, a second driving unit, a third switching unit, a third driving unit, and a logic control unit;

The first power supply unit includes a first switch unit, the control end of the first switch unit is electrically connected to the first driving unit, the first end of the first switch unit is electrically connected to the power supply end, and the second end of the first switch unit is used to connect to the first drive unit. The first end of a capacitor is electrically connected, and its second end is also used to be electrically connected to the first end of the first MOS tube or the indicator light;

The second power supply unit includes a second switch unit, the control end of which is electrically connected to the second drive unit, the first end of which is electrically connected to the power supply end, and the second end of which is used to connect to the third capacitor of the first capacitor. Two ends are electrically connected, and the second end is electrically connected to the ground end of the power supply via a third switch unit;

The first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, a first PMOS tube, and a second PMOS tube, wherein the input of the inverter The terminal is electrically connected to the control terminal of the second switch unit or the logic control unit, the output terminal of the inverter is electrically connected to the control terminal of the first NMOS tube, and the source of the first NMOS tube It is electrically connected to the ground terminal of the power supply, its drain is electrically connected to the drain of the first PMOS tube and the control terminal of the second PMOS tube, and the control terminal of the first PMOS tube is electrically connected to the drain of the second NMOS tube, The source of the first PMOS tube is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, and the control terminal of the second NMOS is connected to the control terminal of the second switch unit or the other terminal. The logic control unit is electrically connected, the drain of the second NMOS transistor is also electrically connected to the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected to the second end of the first switch unit, and the second NMOS transistor The drain is also used to control whether the first switch unit is turned on;

The second switching unit includes a PMOS transistor, and the second driving unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is electrically connected to the power supply ground terminal, and the third NMOS The control end of the tube and the control end of the third PMOS tube are both electrically connected to the logic control unit. The drain of the third NMOS tube is electrically connected to the drain of the third PMOS tube. The third PMOS tube The source electrode is electrically connected to the power supply terminal, and the drain electrode of the third NMOS tube is also used to control whether the second switch unit is turned on;

The control end of the third switch unit is electrically connected to the third drive unit, its first end is electrically connected to the second end of the second switch unit, and its second end is electrically connected to the power ground end;

The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, and the fourth NMOS transistor The control end of the tube and the control end of the fourth PMOS tube are both electrically connected to the logic control unit, the drain of the fourth NMOS tube is electrically connected to the drain of the fourth PMOS tube, and the source of the fourth PMOS tube The pole is electrically connected to the power supply terminal, and the drain of the fourth NMOS tube is also used to control whether the third switch unit is turned on;

The logic control unit is also electrically connected to the voltage judgment unit;

Wherein, in the first mode, the logic control unit controls the first switch unit, the third switch unit is always on and the second switch unit is always off. In the second mode, during the first time period, the logic control unit controls The first switch unit and the third switch unit are turned on and the second switch unit is turned off to charge the first capacitor. In the second time period, the logic control unit controls the second switch unit to be turned on and the first switch unit is turned off. The switching unit and the third switching unit are turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light.
The system control circuit according to claim 76, wherein the logic control unit further includes a first logic gate and a second logic gate, wherein the first input end of the first logic gate is connected to a clock signal, Its third input terminal is electrically connected to the control terminal of the third switching unit, its fourth input terminal is electrically connected to the output terminal of the voltage judgment unit, and its output terminal is electrically connected to the second driving unit; the second logic gate The first input terminal is electrically connected to the control terminal of the second switch unit, the second input terminal is connected to the clock signal, and the output terminal is electrically connected to the third driving unit.
The system control circuit according to claim 77, characterized in that the system control circuit further includes a light control unit, the light control unit is used to control whether the indicator light emits light, and the light control unit is connected to the third light control unit. The second input terminal of a logic gate is electrically connected so that the indicator light is not boosted when it does not need to be lit;

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate.
The system control circuit according to claim 75, characterized in that the system control circuit further includes a switch control unit, the switch control unit is electrically connected to the voltage judgment unit, and the switch control unit is respectively connected to the power supply. The power supply terminal and the power ground terminal are electrically connected;

The first power supply unit includes a fifth switch unit. The control end of the fifth switch unit is electrically connected to the switch control unit. The first end of the fifth switch unit is electrically connected to the power supply end. The second end of the fifth switch unit is used to connect to the indicator light. Or the first end of the first MOS tube is electrically connected;

The second power supply unit includes a first boost unit. The first end of the first boost unit is electrically connected to the power supply terminal, and its second end is used to connect to the indicator light or the first MOS tube. The first end is electrically connected, and the control end of the first boost unit is electrically connected to the switch control unit;

Wherein, in the first mode, the switch control unit controls the fifth switch unit to be normally turned on, and in the second mode, the switch control unit controls the first boost unit to operate so that the voltage at the power supply end is boosted for use. To drive the indicator light, and the switch control unit controls the fifth switch unit to be normally turned off.
The system control circuit according to claim 79, characterized in that the first boost unit includes a second switching unit and a first switching unit, wherein the first end of the second switching unit, the first The first end of the switch unit is electrically connected to the power supply end, the second end of the first switch unit is used to be electrically connected to the first end of the first capacitor, and the control end of the first switch unit is connected to the first end of the first capacitor. The switch control unit is electrically connected, the control end of the second switch unit is electrically connected to the switch control unit, its second end is used to be electrically connected to the second end of the first capacitor, and its second end is also indirectly connected to the second end of the first capacitor. The power supply ground end is electrically connected; the system control circuit also includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and its first end is used to connect to the first capacitor. The second end is electrically connected, and the second end is electrically connected to the ground end of the power supply, wherein, in the second mode, during the first time period, the switch control unit controls the first switch unit and the third switch unit to be turned on and the The second switch unit is turned off to charge the first capacitor. In the second time period, the switch control unit controls the second switch unit to be turned on and the first switch unit and the third switch unit are turned off to charge the first capacitor. The potential at the first end of a capacitor is raised for driving the indicator light; or,

The first boost unit is a boost circuit.
The system control circuit according to any one of claims 67-74, characterized in that the system control circuit is located on the same chip; or,

The first end of the first MOS transistor is one of the source or the drain, and the second end of the first MOS transistor is the other one of the source or the drain; or,

The range of the first reference voltage is 80mV-150mV.
An indication component, characterized by comprising: the system control circuit according to any one of claims 67-81;

An indicator light, which is connected in series with the first MOS tube of the system control circuit;

The positive and negative poles of the power supply are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.
The indication assembly according to claim 82, wherein the power supply voltage range provided by the power supply includes 1.5V-5V; or,

The indication component further includes a first capacitor, the first end of the first capacitor and the indicator light are both electrically connected to the same end of the system control circuit, and the second end of the first capacitor is indirectly electrically connected to the power ground end. connection; or,

The power supply includes a battery core; or,

The indicator light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V.
An electronic atomization device, characterized by including:

The system control circuit according to any one of claims 67-81 or the indication component according to any one of claims 82 and 83.
A system control circuit for driving an indicator light, which is characterized in that it includes: a power supply terminal and a power ground terminal, and the power supply terminal and power ground terminal are used to be electrically connected to the positive and negative poles of the power supply;

The light-emitting end is indirectly electrically connected to the power supply end, the light-emitting end is used to be electrically connected to the first end of the indicator light, and the power supply grounding end is used to be directly or indirectly electrically connected to the second end of the indicator light;

The voltage judgment unit is electrically connected to the light-emitting end, the power supply end or the line between the light-emitting end and the power supply end to form a first connection point. It is also connected to the power supply ground end or the second connection point between the power supply ground end and the indicator light. The lines between the terminals are electrically connected to form a second connection point for obtaining the voltage at the two connection points. The voltage judgment unit is used to judge whether the voltage difference at the two connection points is greater than or equal to the first reference voltage. , when the voltage judgment unit judges that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first mode, and when the voltage judgment unit judges that the voltage difference is less than the first reference voltage The system control circuit operates in the second mode;

Wherein, in the first mode, the voltage of the power supply terminal is directly used to drive the indicator light, and in the second mode, the voltage of the power supply terminal is boosted and used to drive the indicator light.
The system control circuit according to claim 85, characterized in that the system control circuit includes a first light-emitting end and a third light-emitting end, the light-emitting end is a first light-emitting end, and the first light-emitting end is used to communicate with the indicator light. The first end is electrically connected, the third light-emitting end is used to be electrically connected to the second end of the indicator light, the third light-emitting end is indirectly electrically connected to the power ground end, the voltage judgment unit is connected to the third light-emitting end, The power supply ground terminal or the line between the power supply ground terminal and the third light-emitting terminal is electrically connected to form the second connection point; or,

The system control circuit includes a third light-emitting end, which is a third light-emitting end. The third light-emitting end is used to be electrically connected to the first end of the indicator light. The power ground end is used to be connected to the second end of the indicator light. The voltage judgment unit is electrically connected to a third light-emitting end, a power supply end, or a line between the power supply end and the third light-emitting end to form the first connection point.
The system control circuit according to claim 85 or 86, wherein the voltage judgment unit includes a voltage comparison unit, the first input end of the voltage comparison unit is electrically connected to the first connection point, and the voltage comparison unit The second input terminal is electrically connected to the second connection point. The voltage comparison unit obtains the voltage of the first connection point through the first input terminal. The voltage comparison unit obtains the voltage of the second connection point through the second input terminal. When When the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit outputs a first signal to make the system control circuit operate in the first mode. When the voltage difference is less than the first reference voltage, The voltage comparison unit outputs a second signal to cause the system control circuit to operate in a second mode.
The system control circuit according to claim 87, wherein the voltage judgment unit further includes a flip-flop, the flip-flop is electrically connected to the output end of the voltage comparison unit, and when the flip-flop receives the second When the signal is generated, the flip-flop outputs a second driving signal, so that the system circuit operates in the second mode.
The system control circuit of claim 88, wherein when the flip-flop receives a signal from the voltage comparison unit that changes from the second signal to the first signal, the flip-flop continues to output the second driving signal. , so that the system circuit continues to work in the second mode.
The system control circuit according to claim 87, characterized in that the system control circuit includes a light control unit and a trigger, the light control unit is used to control whether the indicator light emits light, and the trigger is respectively connected to the The output end of the voltage comparison unit and the light control unit are electrically connected. When the light control unit is used to control the indicator light to go out, the light control unit outputs an extinguishing signal to the trigger. After receiving the extinguishing signal, the trigger transmits the first A driving signal to make the system circuit operate in the first mode.
The system control circuit according to claim 87, characterized in that the system control circuit includes a light control unit and a trigger, the light control unit is used to control whether the indicator light emits light, and the trigger is respectively connected to the The output end of the voltage comparison unit and the light control unit are electrically connected. When the light control unit controls the indicator light to emit light and the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit outputs a first signal, so The above trigger receives After the first signal, the flip-flop outputs a first driving signal, so that the system circuit operates in the first mode.
The system control circuit according to claim 91, characterized in that when the light-on control unit controls the indicator light to light up, when the voltage difference changes from greater than or equal to the first reference voltage to less than the first reference voltage. When the voltage is high, the voltage comparison unit outputs a second signal, and the flip-flop outputs a second driving signal after receiving the second signal, so that the system circuit operates in the second mode.
The system control circuit according to claim 85 or 86, characterized in that the system control circuit includes:

A first power supply unit, a first end of which is electrically connected to the power supply end, and a second end of which is electrically connected to the light-emitting end, and the first power supply unit is used to drive the indicator light with the voltage of the power supply end;

A second power supply unit has a first end electrically connected to the power supply end and a second end electrically connected to the light-emitting end. The second power supply unit is used to boost the voltage of the power supply end;

In the first mode, the first power supply unit works to make the voltage of the power supply terminal drive the indicator light. In the second mode, the second power supply unit works to boost the voltage of the power supply terminal to drive the indicator light.
The system control circuit according to claim 93, wherein the second power supply unit includes the first power supply unit;

The system control circuit also includes a first driving unit, a second driving unit, a third switching unit, a third driving unit, and a logic control unit;

The first power supply unit includes a first switch unit, the control end of the first switch unit is electrically connected to the first driving unit, the first end of the first switch unit is electrically connected to the power supply end, and the second end of the first switch unit is used to connect to the first drive unit. The first end of a capacitor is electrically connected, and its second end is also used to be electrically connected to the light-emitting end;

The second power supply unit includes a second switch unit, the control end of which is electrically connected to the second drive unit, the first end of which is electrically connected to the power supply end, and the second end of which is used to connect to the third capacitor of the first capacitor. Two ends are electrically connected, and the second end is electrically connected to the ground end of the power supply via a third switch unit;

The first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, a first PMOS tube, and a second PMOS tube, wherein the input of the inverter The terminal is electrically connected to the control terminal of the second switch unit or the logic control unit, the output terminal of the inverter is electrically connected to the control terminal of the first NMOS tube, and the source of the first NMOS tube It is electrically connected to the ground terminal of the power supply, its drain is electrically connected to the drain of the first PMOS tube and the control terminal of the second PMOS tube, and the control terminal of the first PMOS tube is electrically connected to the drain of the second NMOS tube, The source of the first PMOS tube is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, and the control terminal of the second NMOS is connected to the control terminal of the second switch unit or the other terminal. The logic control unit is electrically connected, the drain of the second NMOS transistor is also electrically connected to the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected to the second end of the first switch unit, and the second NMOS transistor The drain is also used to control whether the first switch unit is turned on;

The second switching unit includes a PMOS transistor, and the second driving unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is electrically connected to the power supply ground terminal, and the third NMOS The control end of the tube and the control end of the third PMOS tube are both electrically connected to the logic control unit. The drain of the third NMOS tube is electrically connected to the drain of the third PMOS tube. The third PMOS tube The source electrode is electrically connected to the power supply terminal, and the drain electrode of the third NMOS tube is also used to control whether the second switch unit is turned on;

The control end of the third switch unit is electrically connected to the third drive unit, its first end is electrically connected to the second end of the second switch unit, and its second end is electrically connected to the power ground end;

The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, and the fourth NMOS transistor The control end of the tube and the control end of the fourth PMOS tube are both electrically connected to the logic control unit, the drain of the fourth NMOS tube is electrically connected to the drain of the fourth PMOS tube, and the source of the fourth PMOS tube The pole is electrically connected to the power supply terminal, and the drain of the fourth NMOS tube is also used to control whether the third switch unit is turned on;

The logic control unit is also electrically connected to the voltage judgment unit;

Wherein, in the first mode, the logic control unit controls the first switch unit, the third switch unit is always on and the second switch unit is always off. In the second mode, during the first time period, the logic control unit controls The first switching unit and the third switching unit are turned on and the second switching unit is turned off to charge the first capacitor. In the second time period, the logic control The unit controls the second switch unit to be turned on and the first switch unit and the third switch unit to be turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light.
The system control circuit according to claim 94, wherein the logic control unit further includes a first logic gate and a second logic gate, wherein the first input end of the first logic gate is connected to a clock signal, Its third input terminal is electrically connected to the control terminal of the third switching unit, its fourth input terminal is electrically connected to the output terminal of the voltage judgment unit, and its output terminal is electrically connected to the second driving unit; the second logic gate The first input terminal is electrically connected to the control terminal of the second switch unit, the second input terminal is connected to the clock signal, and the output terminal is electrically connected to the third driving unit.
The system control circuit according to claim 95, characterized in that the system control circuit further includes a light control unit, the light control unit is used to control whether the indicator light emits light, and the light control unit is connected to the third light control unit. The second input terminal of a logic gate is electrically connected so that the indicator light is not boosted when it does not need to be lit;

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate.
The system control circuit according to claim 93, characterized in that the system control circuit further includes a switch control unit, the switch control unit is electrically connected to the voltage judgment unit, and the switch control unit is respectively connected to the power supply. The power supply terminal and the power ground terminal are electrically connected;

The first power supply unit includes a fifth switch unit, a control end of the fifth switch unit is electrically connected to the switch control unit, a first end of the fifth switch unit is electrically connected to the power supply end, and a second end of the fifth switch unit is electrically connected to the light-emitting end. electrical connection;

The second power supply unit includes a first voltage boosting unit, a first end of the first voltage boosting unit is electrically connected to the power supply end, and a second end of the first voltage boosting unit is electrically connected to the light-emitting end. The control end of the pressure unit is electrically connected to the switch control unit;

Wherein, in the first mode, the switch control unit controls the fifth switch unit to be normally turned on, and in the second mode, the switch control unit controls the first boost unit to operate so that the voltage at the power supply end is boosted for use. To drive the indicator light, and the switch control unit controls the fifth switch unit to be normally turned off.
The system control circuit according to claim 97, characterized in that the first boost unit includes a second switching unit and a first switching unit, wherein the first end of the second switching unit, the first The first end of the switch unit is electrically connected to the power supply end, the second end of the first switch unit is used to be electrically connected to the first end of the first capacitor, and the control end of the first switch unit is connected to the first end of the first capacitor. The switch control unit is electrically connected, the control end of the second switch unit is electrically connected to the switch control unit, its second end is used to be electrically connected to the second end of the first capacitor, and its second end is also indirectly connected to the second end of the first capacitor. The power supply ground end is electrically connected; the system control circuit also includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and its first end is used to connect to the first capacitor. The second end is electrically connected, and the second end is electrically connected to the ground end of the power supply, wherein, in the second mode, during the first time period, the switch control unit controls the first switch unit and the third switch unit to be turned on and the The second switch unit is turned off to charge the first capacitor. In the second time period, the switch control unit controls the second switch unit to be turned on and the first switch unit and the third switch unit are turned off to charge the first capacitor. The potential at the first end of a capacitor is raised for driving the indicator light; or,

The first boost unit is a boost circuit.
The system control circuit according to any one of claims 85-92, characterized in that the system control circuit is located on the same chip; or,

The range of the first reference voltage is 2.5V-3.5V.
An indication component, characterized in that it includes:

The system control circuit according to any one of claims 85-99;

An indicator light, the first end of which is electrically connected to the light-emitting end, and the second end of which is directly or indirectly electrically connected to the grounding end of the power supply;

The positive and negative poles of the power supply are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.
The indication component according to claim 100, wherein the power supply voltage range provided by the power supply includes 1.5V-5V; or,

The indicating component also includes a first capacitor, the first end of the first capacitor and the indicator light are electrically connected to the light-emitting end, and the second end of the first capacitor is indirectly electrically connected to the power supply ground end; or,

The power supply includes a battery core; or,

The indicator light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V.
An electronic atomization device, characterized by comprising: a system control circuit as described in any one of claims 85-99 or an indication component as described in any one of claims 100 and 101.
A system control circuit for driving indicator lights, which is characterized by including:

A power supply terminal and a power ground terminal, which are used to electrically connect to the positive and negative poles of the power supply;

A detection resistor, the first end of which is electrically connected to the power supply end or the power supply ground end, and is connected in series with the indicator light;

A voltage judgment unit, which is electrically connected to the first end and the second end of the detection resistor for obtaining the voltage of the first end and the voltage of the second end. The voltage judgment unit is used to judge the voltage of the first end and the second end. Whether the voltage difference is greater than or equal to the first reference voltage, when the voltage judgment unit judges that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first mode, and when the voltage judgment unit judges that the voltage difference is greater than or equal to the first reference voltage, the system control circuit operates in the first mode. When the voltage difference is less than the first reference voltage, the system control circuit operates in the second mode;

Wherein, in the first mode, the voltage of the power supply terminal is directly used to drive the indicator light, and in the second mode, the voltage of the power supply terminal is boosted and used to drive the indicator light.
The system control circuit according to claim 103, characterized in that the detection resistor is used to be located between the power supply terminal and the indicator light; or,

The detection resistor is used between the ground terminal of the power supply and the indicator light; or,

The detection resistor is used between the ground terminal of the power supply and the negative pole of the power supply; or,

The detection resistor is used to be located between the power supply terminal and the positive electrode of the power supply.
The system control circuit according to claim 103 or 104, characterized in that the voltage judgment unit includes a voltage comparison unit, the first input end of the voltage comparison unit is electrically connected to the first end of the detection resistor, and the voltage The second input terminal of the comparison unit is electrically connected to the second terminal of the detection resistor. The voltage comparison unit obtains the voltage across the detection resistor through the first input terminal and the second input terminal. When the voltage difference is greater than or equal to the When the voltage difference is less than the first reference voltage, the voltage comparison unit outputs a first signal to make the system control circuit operate in the first mode. When the voltage difference is less than the first reference voltage, the voltage comparison unit outputs a second signal to make the system control circuit operate in the first mode. Make the system control circuit work in the second mode.
The system control circuit according to claim 105, characterized in that the voltage judgment unit further includes a flip-flop, the flip-flop is electrically connected to the output end of the voltage comparison unit, and when the flip-flop receives the second When the signal is generated, the flip-flop outputs a second driving signal, so that the system circuit operates in the second mode.
The system control circuit of claim 106, wherein when the flip-flop receives a signal from the voltage comparison unit that changes from the second signal to the first signal, the flip-flop continues to output the second driving signal. , so that the system circuit continues to work in the second mode.
The system control circuit according to claim 105, characterized in that the system control circuit includes a light control unit and a trigger, the light control unit is used to control whether the indicator light emits light, and the trigger is respectively connected to the The output end of the voltage comparison unit and the light control unit are electrically connected. When the light control unit is used to control the indicator light to go out, the light control unit outputs an extinguishing signal to the trigger. After receiving the extinguishing signal, the trigger transmits the first A driving signal to make the system circuit operate in the first mode.
The system control circuit according to claim 105, characterized in that the system control circuit includes a light control unit and a trigger, the light control unit is used to control whether the indicator light emits light, and the trigger is respectively connected to the The output end of the voltage comparison unit and the light control unit are electrically connected. When the light control unit controls the indicator light to emit light and the voltage difference is greater than or equal to the first reference voltage, the voltage comparison unit outputs a first signal, so After the flip-flop receives the first signal, the flip-flop outputs a first driving signal, so that the system circuit operates in the first mode.
The system control circuit according to claim 109, characterized in that when the light-on control unit controls the indicator light to light up and the voltage difference changes from greater than or equal to the first reference voltage to less than the first reference voltage, When the voltage is high, the voltage comparison unit outputs a second signal, and the flip-flop outputs a second driving signal after receiving the second signal, so that the system circuit operates in the second mode.
The system control circuit according to claim 103 or 104, characterized in that the system control circuit includes:

A first power supply unit, a first end of which is electrically connected to the power supply end, and a second end of which is used to be electrically connected to the indicator light, and the first power supply unit is used to drive the indicator light with the voltage of the power supply end;

The second power supply unit has a first end that is electrically connected to the power supply end, and a second end that is used to electrically connect with the indicator light. The second power supply unit is used to boost the voltage of the power supply end;

In the first mode, the first power supply unit works to make the voltage of the power supply terminal drive the indicator light. In the second mode, the second power supply unit works to boost the voltage of the power supply terminal to drive the indicator light.
The system control circuit according to claim 111, wherein the second power supply unit includes the first power supply unit;

The system control circuit also includes a first driving unit, a second driving unit, a third switching unit, a third driving unit, and a logic control unit;

The first power supply unit includes a first switch unit, the control end of the first switch unit is electrically connected to the first drive unit, the first end of the first switch unit is electrically connected to the power supply end, and the second end of the first switch unit is used to connect to the first drive unit. The first end of a capacitor is electrically connected, and its second end is also used to be electrically connected to the indicator light;

The second power supply unit includes a second switch unit, the control end of which is electrically connected to the second drive unit, the first end of which is electrically connected to the power supply end, and the second end of which is used to connect to the third capacitor of the first capacitor. Two ends are electrically connected, and the second end is electrically connected to the ground end of the power supply via a third switch unit;

The first switching unit includes a PMOS tube, and the first driving unit includes an inverter, a first NMOS tube, a second NMOS tube, a first PMOS tube, and a second PMOS tube, wherein the input of the inverter The terminal is electrically connected to the control terminal of the second switch unit or the logic control unit, the output terminal of the inverter is electrically connected to the control terminal of the first NMOS tube, and the source of the first NMOS tube It is electrically connected to the ground terminal of the power supply, its drain is electrically connected to the drain of the first PMOS tube and the control terminal of the second PMOS tube, and the control terminal of the first PMOS tube is electrically connected to the drain of the second NMOS tube, The source of the first PMOS tube is electrically connected to the second terminal of the first switch unit, the source of the second NMOS is electrically connected to the power ground terminal, and the control terminal of the second NMOS is connected to the control terminal of the second switch unit or the other terminal. The logic control unit is electrically connected, the drain of the second NMOS transistor is also electrically connected to the drain of the second PMOS transistor, the source of the second PMOS transistor is electrically connected to the second end of the first switch unit, and the second NMOS transistor The drain is also used to control whether the first switch unit is turned on;

The second switching unit includes a PMOS transistor, and the second driving unit includes a third NMOS transistor and a third PMOS transistor, wherein the source of the third NMOS transistor is electrically connected to the power supply ground terminal, and the third NMOS The control end of the tube and the control end of the third PMOS tube are both electrically connected to the logic control unit. The drain of the third NMOS tube is electrically connected to the drain of the third PMOS tube. The third PMOS tube The source electrode is electrically connected to the power supply terminal, and the drain electrode of the third NMOS tube is also used to control whether the second switch unit is turned on;

The control end of the third switch unit is electrically connected to the third drive unit, its first end is electrically connected to the second end of the second switch unit, and its second end is electrically connected to the power ground end;

The third switching unit includes an NMOS transistor, and the third driving unit includes a fourth NMOS transistor and a fourth PMOS transistor, wherein the source of the fourth NMOS transistor is electrically connected to the power supply ground terminal, and the fourth NMOS transistor The control end of the tube and the control end of the fourth PMOS tube are both electrically connected to the logic control unit, the drain of the fourth NMOS tube is electrically connected to the drain of the fourth PMOS tube, and the source of the fourth PMOS tube The pole is electrically connected to the power supply terminal, and the drain of the fourth NMOS tube is also used to control whether the third switch unit is turned on;

The logic control unit is also electrically connected to the voltage judgment unit;

Wherein, in the first mode, the logic control unit controls the first switch unit, the third switch unit is always on and the second switch unit is always off. In the second mode, during the first time period, the logic control unit controls The first switch unit and the third switch unit are turned on and the second switch unit is turned off to charge the first capacitor. In the second time period, the logic control unit controls the second switch unit to be turned on and the first switch unit is turned off. The switching unit and the third switching unit are turned off so that the potential of the first end of the first capacitor is raised for driving the indicator light.
The system control circuit according to claim 112, wherein the logic control unit further includes a first logic gate and a second logic gate, wherein the first input end of the first logic gate is connected to a clock signal, Its third input terminal is electrically connected to the control terminal of the third switching unit, its fourth input terminal is electrically connected to the output terminal of the voltage judgment unit, and its output terminal is electrically connected to the second driving unit; the second logic gate The first input terminal is electrically connected to the control terminal of the second switch unit, Its second input terminal is connected to the clock signal, and its output terminal is electrically connected to the third driving unit.
The system control circuit according to claim 113, characterized in that the system control circuit further includes a light control unit, the light control unit is used to control whether the indicator light emits light, and the light control unit is connected to the third light control unit. The second input terminal of a logic gate is electrically connected so that the indicator light is not boosted when it does not need to be lit;

The first logic gate includes a NOR gate, and the second logic gate includes a NAND gate.
The system control circuit according to claim 111, characterized in that the system control circuit further includes a switch control unit, the switch control unit is electrically connected to the voltage judgment unit, and the switch control unit is respectively connected to the power supply. The power supply terminal and the power ground terminal are electrically connected;

The first power supply unit includes a fifth switch unit, a control end of the fifth switch unit is electrically connected to the switch control unit, a first end of the fifth switch unit is electrically connected to the power supply end, and a second end of the fifth switch unit is electrically connected to the indicator light. electrical connection;

The second power supply unit includes a first voltage boosting unit, a first end of the first voltage boosting unit is electrically connected to the power supply end, and a second end of the first voltage boosting unit is electrically connected to the indicator light. The control end of the pressure unit is electrically connected to the switch control unit;

Wherein, in the first mode, the switch control unit controls the fifth switch unit to be normally turned on, and in the second mode, the switch control unit controls the first boost unit to operate so that the voltage at the power supply end is boosted for use. To drive the indicator light, and the switch control unit controls the fifth switch unit to be normally turned off.
The system control circuit according to claim 115, wherein the first boost unit includes a second switching unit and a first switching unit, wherein the first end of the second switching unit, the first The first end of the switch unit is electrically connected to the power supply end, the second end of the first switch unit is used to be electrically connected to the first end of the first capacitor, and the control end of the first switch unit is connected to the first end of the first capacitor. The switch control unit is electrically connected, the control end of the second switch unit is electrically connected to the switch control unit, its second end is used to be electrically connected to the second end of the first capacitor, and its second end is also indirectly connected to the second end of the first capacitor. The power supply ground end is electrically connected; the system control circuit also includes a third switch unit, the control end of the third switch unit is electrically connected to the switch control unit, and its first end is used to connect to the first capacitor. The second end is electrically connected, and the second end is electrically connected to the ground end of the power supply, wherein, in the second mode, during the first time period, the switch control unit controls the first switch unit and the third switch unit to be turned on and the The second switch unit is turned off to charge the first capacitor. During the second time period, the switch control unit controls the second switch unit to be turned on and the first switch unit and the third switch unit to be turned off to charge the first capacitor. The potential at the first end of a capacitor is raised for driving the indicator light; or,

The first boost unit is a boost circuit.
The system control circuit according to any one of claims 103 to 110, characterized in that the system control circuit is located on the same chip or the circuits of the system circuit except the detection resistor are located on the same chip; or,

The range of the first reference voltage is 80mV-150mV.
An indication component, characterized in that it includes:

The system control circuit according to any one of claims 103-117;

An indicator light is connected in series with the detection resistor;

The positive and negative poles of the power supply are electrically connected to the power supply terminal and the power ground terminal of the system control circuit.
The indication component according to claim 118, wherein the power supply voltage range provided by the power supply includes 1.5V-5V; or,

The indication component further includes a first capacitor, a first end of the first capacitor is electrically connected to the indicator light, and a second end of the first capacitor is indirectly electrically connected to the power supply ground end; or,

The power supply includes a battery core; or,

The indicator light includes a white LED light and/or a blue LED light, and the minimum conduction voltage of the indicator light is greater than or equal to 2.5V.
An electronic atomization device, characterized by including:

The system control circuit as claimed in any one of claims 103-117 or the indication component as claimed in any one of claims 118 and 119.