CN109907378B - Electronic cigarette power supply circuit and electronic cigarette - Google Patents
Electronic cigarette power supply circuit and electronic cigarette Download PDFInfo
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- CN109907378B CN109907378B CN201910284122.0A CN201910284122A CN109907378B CN 109907378 B CN109907378 B CN 109907378B CN 201910284122 A CN201910284122 A CN 201910284122A CN 109907378 B CN109907378 B CN 109907378B
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 82
- 238000004146 energy storage Methods 0.000 claims abstract description 72
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 239000003990 capacitor Substances 0.000 claims description 44
- 238000002955 isolation Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 239000003381 stabilizer Substances 0.000 claims 4
- 238000007599 discharging Methods 0.000 abstract description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 12
- 230000000087 stabilizing effect Effects 0.000 description 11
- 230000006870 function Effects 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention discloses an electronic cigarette power supply circuit and an electronic cigarette, wherein the electronic cigarette power supply circuit comprises a power supply module, a power failure detection circuit, an energy storage circuit and a control circuit, when the power supply module is powered down, the voltage of a detection end of the power failure detection circuit becomes zero, a power supply input end of the power failure detection circuit is communicated with a power supply output end, the energy storage circuit outputs power to the control circuit through the power failure detection circuit, the control circuit starts to perform shutdown control of the electronic cigarette, such as closing an atomizer, storing parameters of the atomizer and the like, and the control circuit completes shutdown work before the energy storage circuit finishes discharging for a preset time, so that the problems of data loss, damage and abnormal shutdown of a hardware circuit after the electronic cigarette is powered down are solved, and the service life and stability of the electronic cigarette are improved.
Description
Technical Field
The invention relates to the technical field of electronic cigarettes, in particular to an electronic cigarette power supply circuit and an electronic cigarette.
Background
At present, the electronic cigarette is powered by a large amount of detachable lithium batteries. Lack of power failure detection function in the process of disassembling and assembling the battery may cause important data loss and damage of the electronic cigarette, and the hardware circuit is not normally closed, so that the service life and stability of the electronic cigarette are affected.
Disclosure of Invention
The invention mainly aims to provide a power circuit of an electronic cigarette, which aims to solve the problems that the electronic cigarette is lost and damaged in data after power failure and a hardware circuit is not normally closed.
In order to achieve the above purpose, the electronic cigarette power supply circuit provided by the invention comprises a power supply module, a power failure detection circuit, an energy storage circuit and a control circuit, wherein a first power supply end of the power supply module, a power supply input end of the energy storage circuit and a detection end of the power failure detection circuit are mutually connected, a second power supply end of the power supply module is connected with the first power supply end of the control circuit, a power supply output end of the energy storage circuit is connected with the power supply input end of the power failure detection circuit, and a power supply output end of the power failure detection circuit is connected with the second power supply end of the control circuit;
the energy storage circuit is used for receiving the power output by the power module and storing energy;
The power-down detection circuit is used for outputting the power supply of the energy storage circuit to the control circuit when detecting that the power supply module is powered down, so that the control circuit performs shutdown control of the electronic cigarette.
Preferably, the power failure detection circuit comprises an energy storage circuit isolation capacitor, a switch circuit and a pull-down resistor;
One end of the isolation capacitor, the power input end of the energy storage circuit and the first power end of the power module are interconnected, the second end of the isolation capacitor is connected with the controlled end of the switch circuit, the power output end of the energy storage circuit is connected with the power input end of the switch circuit, the power output end of the switch circuit, one end of the pull-down resistor and the second power end of the control circuit are interconnected, and the second end of the pull-down resistor is grounded;
the isolation capacitor is used for outputting low level to the switch circuit when the power supply module is powered off;
The switch circuit is used for being conducted when the low level is received, and outputting the power supply of the energy storage circuit to the control circuit so that the control circuit can perform shutdown control of the electronic cigarette.
Preferably, the electronic cigarette power supply circuit further comprises a voltage conversion circuit;
The power supply output end of the power supply module, the input end of the voltage conversion circuit and the first end of the isolation capacitor are interconnected, and the output end of the voltage conversion circuit, the first end of the energy storage circuit and the first power supply end of the control circuit are interconnected.
Preferably, the voltage conversion circuit includes a three-terminal voltage regulator, an input terminal of the three-terminal voltage regulator is an input terminal of the voltage conversion circuit, an output terminal of the three-terminal voltage regulator is an output terminal of the voltage conversion circuit, and a ground of the three-terminal voltage regulator is grounded.
Preferably, the switching circuit comprises a PNP triode, a base electrode of the PNP triode is connected with the second end of the isolation capacitor, an emitter electrode of the PNP triode is connected with the power output end of the energy storage circuit, and a collector electrode of the PNP triode, a first end of the pull-down resistor and a second power end of the control circuit are connected.
Preferably, the energy storage circuit comprises a first diode and an energy storage capacitor, wherein an anode of the first diode is connected with a power output end of the voltage conversion circuit, a cathode of the first diode, a first end of the energy storage capacitor, an output end of the voltage conversion circuit and an emitter of the PNP triode are interconnected, and a second end of the energy storage capacitor is grounded.
Preferably, the power failure detection circuit further includes a first current limiting resistor and a second current limiting resistor, a first end of the first current limiting resistor is connected with a first power output end of the power module, a second end of the first current limiting resistor is connected with a first end of the isolation capacitor, a first end of the second current limiting resistor, a power output end of the energy storage circuit and a power input end of the PNP triode are interconnected, and a second end of the second current limiting resistor, a second end of the isolation capacitor and a base electrode of the PNP triode are interconnected.
Preferably, the power failure detection circuit further comprises a voltage stabilizing circuit for preventing overvoltage, the voltage stabilizing circuit comprises a voltage stabilizing diode, the cathode of the voltage stabilizing diode, the second end of the first current limiting resistor and the first end of the isolation capacitor are connected with each other, and the second end of the voltage stabilizing diode is grounded.
The invention further provides an electronic cigarette, which comprises the atomizer and the electronic cigarette power supply circuit, wherein the controlled end of the atomizer is connected with the control end of the control circuit.
Preferably, the electronic cigarette further comprises a memory for storing parameters of the electronic cigarette, and a signal end of the memory is connected with a signal end of the control circuit.
The technical scheme of the invention comprises an electronic cigarette power supply circuit formed by a power supply module, a power failure detection circuit, an energy storage circuit and a control circuit, wherein a first power supply end of the power supply module, a power supply input end of the energy storage circuit and a detection end of the power failure detection circuit are mutually connected, a second power supply end of the power supply module is connected with the first power supply end of the control circuit, a power supply output end of the energy storage circuit is connected with the power supply input end of the power failure detection circuit, and a power supply output end of the power failure detection circuit is connected with the second power supply end of the control circuit.
When the power supply module works normally, the energy storage circuit is in a charging saturation state, the power failure detection circuit does not act, and the control circuit obtains power supply from the power supply module.
When the power module is powered down, the voltage of the detection end of the power-down detection circuit becomes zero, the power input end of the power-down detection circuit is communicated with the power output end of the power-down detection circuit, the energy storage circuit outputs power to the control circuit through the power-down detection circuit, the control circuit starts to perform shutdown control of the electronic cigarette, such as closing of an atomizer, parameter storage of the electronic cigarette and the like, and the control circuit completes shutdown work before the energy storage circuit finishes discharging for a preset time, so that the problems that data loss and damage occur after the electronic cigarette is powered down and a hardware circuit is not normally closed are solved, and the service life and stability of the electronic cigarette are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of an embodiment of a power circuit for an electronic cigarette according to the present invention;
FIG. 2 is a schematic block diagram of another embodiment of a power circuit of an electronic cigarette according to the present invention;
FIG. 3 is a schematic block diagram of another embodiment of an electronic cigarette power circuit according to the present invention;
FIG. 4 is a schematic diagram of a power circuit of an electronic cigarette according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of another embodiment of a power circuit of an electronic cigarette according to the present invention;
fig. 6 is a schematic block diagram of an electronic cigarette according to an embodiment of the invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the description of "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout the text is: the system comprises three parallel schemes, wherein an A/B scheme is taken as an example, the scheme comprises an A scheme or a B scheme or a scheme which is simultaneously met by the A and the B, and in addition, the technical schemes among the embodiments can be combined with each other, but the technical schemes are required to be based on the realization that the technical schemes can be realized by a person with ordinary skill in the art, and when the technical schemes are mutually contradictory or can not be realized, the combination of the technical schemes is not considered to exist and is not within the protection scope of the invention.
The invention provides an electronic cigarette power supply circuit 100.
As shown in fig. 1, fig. 1 is a schematic block diagram of an embodiment of a power circuit of an electronic cigarette according to the present invention, the power circuit 100 of the electronic cigarette includes a power module 30, a power-down detection circuit 10, a tank circuit 20 and a control circuit 40, wherein a first power end of the power module 30, a power input end of the tank circuit 20 and a detection end of the power-down detection circuit 10 are interconnected, a second power end of the power module 30 is connected with a first power end of the control circuit 40, a power output end of the tank circuit 20 is connected with a power input end of the power-down detection circuit 10, and a power output end of the power-down detection circuit 10 is connected with a second power end of the control circuit 40;
the energy storage circuit 20 is used for receiving the power output by the power module 30 and storing energy;
The power-down detection circuit 10 is configured to output the power of the energy storage circuit 20 to the control circuit 40 when detecting that the power module 30 is powered down, so that the control circuit 40 performs power-down control of the electronic cigarette.
In this embodiment, the power-down detection circuit 10 detects the power state of the power module 30 in real time, and when the power module 30 is powered down, the power-down detection circuit 10 is connected to enable the energy storage circuit 20 to output power to the control circuit 40 for a preset time, so that the control circuit 40 has enough time to perform shutdown control such as electronic cigarette parameter storage and hardware circuit shutdown.
The power module 30 may be a detachable battery or a mobile power supply, etc., the power module 30 is connected with each module through a spring or a connecting wire, the power module 30 outputs a power supply to the control circuit 40 of the electronic cigarette, the power failure detection circuit 10 is connected with the power ends of the power module 30 and the control circuit 40 at the same time, when the power module 30 is normal, the power module 30 outputs the power supply to the control circuit 40, and when the power module 30 is powered down, the power failure detection circuit 10 outputs the power supply to the control circuit 40.
The energy storage circuit 20 may adopt an energy storage capacitor or an energy storage inductor, and may be further matched with the voltage stabilizing circuit 12 to keep the voltage of the output end stable, the energy storage circuit 20 stores energy when the power module 30 works normally, when the power module 30 fails, the power is output through the power failure detection circuit 10, the discharging time of the energy storage circuit 20 may be set correspondingly according to the control circuit 40, for example, the discharging time of the energy storage circuit 20 should be slightly longer than the time required by the shutdown processing of the control circuit 40 by changing the capacity of the energy storage capacitor to adapt to the time required by the shutdown processing of the control circuit 40.
The control circuit 40 is used for controlling various functions of the electronic cigarette, including storing parameters of the electronic cigarette, driving hardware circuits of the electronic cigarette, and a microprocessor, a singlechip or a CPU with control functions can be adopted and matched with corresponding driving control circuits, and the control circuit 40 can be correspondingly selected according to different requirements of different electronic cigarette types without specific limitation.
According to the technical scheme, the electronic cigarette power supply circuit 100 is formed by adopting the power supply module 30, the power failure detection circuit 10, the energy storage circuit 20 and the control circuit 40, wherein a first power supply end of the power supply module 30, a power supply input end of the energy storage circuit 20 and a detection end of the power failure detection circuit 10 are mutually connected, a second power supply end of the power supply module 30 is connected with the first power supply end of the control circuit 40, a power supply output end of the energy storage circuit 20 is connected with the power supply input end of the power failure detection circuit 10, and a power supply output end of the power failure detection circuit 10 is connected with the second power supply end of the control circuit 40.
When the power module 30 is operating normally, the energy storage circuit 20 is in a charging saturation state, the power failure detection circuit 10 does not operate, and the control circuit 40 obtains power from the power module 30.
When the power module 30 is powered down, the voltage of the detection end of the power failure detection circuit 10 becomes zero, the power input end and the power output end of the power failure detection circuit 10 are communicated, the energy storage circuit 20 outputs power to the control circuit 40 through the power failure detection circuit 10, the control circuit 40 starts to perform shutdown control of the electronic cigarette, such as closing the atomizer 200 and storing parameters of the electronic cigarette, and the control circuit 40 completes shutdown before the energy storage circuit 20 finishes discharging for a preset time, so that the problems of data loss and damage of the electronic cigarette after power failure and abnormal shutdown of a hardware circuit are solved, and the service life and stability of the electronic cigarette are improved.
As shown in fig. 2, fig. 2 is a schematic block diagram of another embodiment of a power supply circuit of an electronic cigarette according to the present invention, in this embodiment, a power-down detection circuit 10 includes an isolation capacitor C1, a switch circuit 11 and a pull-down resistor Ra;
One end of the isolation capacitor C1, the power input end of the energy storage circuit 20 and the first power end of the power module 30 are interconnected, the second end of the isolation capacitor C1 is connected with the controlled end of the switch circuit 11, the power output end of the energy storage circuit 20 is connected with the power input end of the switch circuit 11, the power output end of the switch circuit 11, one end of the pull-down resistor Ra and the second power end of the control circuit 40 are interconnected, and the second end of the pull-down resistor Ra is grounded;
an isolation capacitor C1 for outputting a low level to the switching circuit 11 when the power supply module 30 is powered down;
The switch circuit 11 is configured to be turned on when receiving the low level, and output the power of the energy storage circuit 20 to the control circuit 40, so that the control circuit 40 performs the shutdown control of the electronic cigarette.
In this embodiment, the switch circuit 11 may adopt a functional chip or a component with an on-off function, such as a triode and a MOS transistor, and the switch circuit 11 is kept off when receiving a high level and is turned on when receiving a low level, and when adopting a triode alone, the PNP triode Q1 needs to be selected, and if adopting an NPN triode, an inverter needs to be matched to realize the corresponding function, and the switch circuit can be specifically selected according to the requirement without specific limitation.
When the power module 30 is in normal operation, the energy storage circuit 20 is in a charging saturation state, the voltage at the second end and the voltage at the first end of the isolation capacitor C1 are kept at a high level, so that the controlled end of the switch circuit 11 is kept at a high level and turned off, and the control circuit 40 receives a low level and obtains power from the power module 30 under the action of the pull-down resistor Ra.
When the power module 30 is powered down, the voltage at the second end of the isolation capacitor C1 immediately jumps to zero potential, the controlled end of the switch circuit 11 receives low level conduction, at this time, the energy storage circuit 20 starts to output a power supply to the control circuit 40 through the switch circuit 11, and the control circuit 40 starts to perform electronic cigarette shutdown control when receiving high level, and before the energy storage circuit 20 finishes discharging for a preset time, the control circuit 40 completes shutdown work, so that the problems of data loss and damage of electronic products after power failure and abnormal shutdown of hardware circuits are solved.
As shown in fig. 3, fig. 3 is a block diagram of another embodiment of the electronic cigarette power supply circuit according to the present invention, in which the electronic cigarette power supply circuit 100 further includes a voltage conversion circuit 50;
The power output terminal of the power module 30, the input terminal of the voltage conversion circuit 50 and the first terminal of the isolation capacitor C1 are interconnected, and the output terminal of the voltage conversion circuit 50, the first terminal of the tank circuit 20 and the first power terminal of the control circuit 40 are interconnected.
In this embodiment, the power supply output by the power module 30 is generally converted by the voltage conversion circuit 50 to be a working power supply of the control circuit 40 or other components, the voltage conversion circuit 50 may be implemented by a resistor voltage division circuit or a voltage conversion chip, and may be specifically and correspondingly selected, in an alternative embodiment, as shown in fig. 4, fig. 4 is a schematic circuit structure diagram of an embodiment of the electronic cigarette power supply circuit of the present invention, the voltage conversion circuit 50 includes a three-terminal voltage regulator U1, an input end of the three-terminal voltage regulator U1 is an input end of the voltage conversion circuit 50, an output end of the three-terminal voltage regulator U1 is an output end of the voltage conversion circuit 50, a ground terminal of the three-terminal voltage regulator U1 is grounded, the three-terminal voltage regulator U1 converts the voltage VIN of the power module to output a voltage V2, and V3.3V, and the like, which conform to the electronic cigarette operation, and it is understood that the front stage and the three-terminal voltage regulator U1 may be correspondingly connected to a filter capacitor to perform harmonic filtering, without specific limitation.
In an alternative embodiment, the switch circuit 11 includes a PNP transistor Q1, a base of the PNP transistor Q1 is connected to the second end of the isolation capacitor C1, an emitter of the PNP transistor Q1 is connected to the power output end of the tank circuit 20, and a collector of the PNP transistor Q1, a first end of the pull-down resistor Ra, and a second power end of the control circuit 40 are connected.
In this embodiment, in order to reduce the design cost, the switching circuit 11 employs the PNP transistor Q1, the PNP transistor Q1 plays a role of switching, when the power module 30 is normal, the base is kept in an off state when receiving a high level, when the power module 30 is powered down, the base is turned on when receiving a low level, the transistor amplifies a signal received by the base and outputs the signal to the control circuit 40, and the control circuit 40 receives a high level and obtains power from the tank circuit 20.
In an alternative embodiment, the energy storage circuit 20 includes a first diode D1 and an energy storage capacitor C2, where an anode of the first diode D1 is connected to the power output terminal of the voltage conversion circuit 50, a cathode of the first diode D1, a first terminal of the energy storage capacitor C2, an output terminal of the voltage conversion circuit 50, and an emitter of the PNP transistor Q1 are interconnected, and a second terminal of the energy storage capacitor C2 is grounded.
In this embodiment, when the power module 30 is normal, the voltage conversion circuit 50 outputs the power supply to the energy storage circuit 20 and the control circuit 40, the energy storage capacitor C2 stores energy, when the power module 30 is powered down and the switch circuit 11 is turned on, the energy storage capacitor C2 discharges, and the first diode D1 is used for preventing the energy storage capacitor C2 from flowing back.
Further, the power failure detection circuit 10 further includes a first current limiting resistor R1 and a second current limiting resistor R2, wherein a first end of the first current limiting resistor R1 is connected to a first power output end of the power module 30, a second end of the first current limiting resistor R1 is connected to a first end of the isolation capacitor C1, a first end of the second current limiting resistor R2, a power output end of the energy storage circuit 20 and a power input end of the PNP transistor Q1 are interconnected, and a second end of the second current limiting resistor R2, a second end of the isolation capacitor C1 and a base electrode of the PNP transistor Q1 are interconnected.
As shown in fig. 5, fig. 5 is a schematic circuit diagram of another embodiment of the power circuit of the electronic cigarette according to the present invention, in this embodiment, the power failure detection circuit 10 further includes a voltage stabilizing circuit 12 for preventing overvoltage, the voltage stabilizing circuit 12 includes a voltage stabilizing diode D2, a cathode of the voltage stabilizing diode D2, a second end of the first current limiting resistor R1 and a first end of the isolation capacitor C1 are interconnected, and a second end of the voltage stabilizing diode D2 is grounded.
In this embodiment, the zener diode D2 is used to prevent the transistor or other components from being damaged by the large voltage generated when the power module 30 is connected or disconnected, so as to realize voltage protection.
The present invention also proposes an electronic cigarette, as shown in fig. 6, fig. 6 is a schematic block diagram of an embodiment of the electronic cigarette of the present invention, in this embodiment, the electronic cigarette includes an atomizer 200 and an electronic cigarette power supply circuit 100, and the specific structure of the electronic cigarette power supply circuit 100 refers to the above embodiment.
In this embodiment, when the power module 30 is normally operated, the power failure detection circuit 10 does not operate, the control circuit 40 normally drives the atomizer 200 to operate, when the power module 30 is powered down, the power failure detection circuit 10 operates, the energy storage circuit 20 outputs power to the control circuit 40 through the power failure detection circuit 10, and the control circuit 40 turns off the atomizer 200 when the energy storage circuit 20 discharges, so that the driving of the atomizer 200 is stopped, the service life and stability of the electronic cigarette are improved, and abnormal turn-off of the atomizer 200 when the power is lost is avoided.
With continued reference to fig. 6, in this embodiment, the electronic cigarette further includes a memory 300 for storing parameters of the electronic cigarette, and a signal terminal of the memory 300 is connected to a signal terminal of the control circuit 40.
The memory 300 adopts EEPROM, FLASH, SD cards and the like to store parameters of the electronic cigarettes in a classified manner and realize communication with the control circuit 40, and when the power supply module 30 is powered down, the control circuit 40 controls the memory 300 to start a data storage task before power failure, so that important data of the electronic cigarettes are prevented from being lost and damaged.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. The electronic cigarette power supply circuit is characterized by comprising a power supply module, a power failure detection circuit, an energy storage circuit and a control circuit, wherein a first power supply end of the power supply module, a power supply input end of the energy storage circuit and a detection end of the power failure detection circuit are mutually connected, a second power supply end of the power supply module is connected with the first power supply end of the control circuit, a power supply output end of the energy storage circuit is connected with the power supply input end of the power failure detection circuit, and a power supply output end of the power failure detection circuit is connected with the second power supply end of the control circuit;
the energy storage circuit is used for receiving the power output by the power module and storing energy;
The power-down detection circuit is used for outputting the power supply of the energy storage circuit to the control circuit when detecting that the power supply module is powered down, so that the control circuit performs shutdown control of the electronic cigarette;
The power failure detection circuit comprises an energy storage circuit isolation capacitor, a switch circuit and a pull-down resistor;
One end of the isolation capacitor, the power input end of the energy storage circuit and the first power end of the power module are interconnected, the second end of the isolation capacitor is connected with the controlled end of the switch circuit, the power output end of the energy storage circuit is connected with the power input end of the switch circuit, the power output end of the switch circuit, one end of the pull-down resistor and the second power end of the control circuit are interconnected, and the second end of the pull-down resistor is grounded;
the isolation capacitor is used for outputting low level to the switch circuit when the power supply module is powered off;
The switch circuit is used for being conducted when the low level is received, and outputting the power supply of the energy storage circuit to the control circuit so that the control circuit can perform shutdown control of the electronic cigarette;
The electronic cigarette power supply circuit further comprises a voltage conversion circuit;
The power supply output end of the power supply module, the input end of the voltage conversion circuit and the first end of the isolation capacitor are interconnected, and the output end of the voltage conversion circuit, the first end of the energy storage circuit and the first power supply end of the control circuit are interconnected;
The voltage conversion circuit comprises a three-terminal voltage stabilizer, wherein the input end of the three-terminal voltage stabilizer is the input end of the voltage conversion circuit, the output end of the three-terminal voltage stabilizer is the output end of the voltage conversion circuit, and the grounding end of the three-terminal voltage stabilizer is grounded.
2. The electronic cigarette power circuit of claim 1, wherein the switching circuit comprises a PNP transistor, a base of the PNP transistor is connected to the second end of the isolation capacitor, an emitter of the PNP transistor is connected to the power output of the tank circuit, and a collector of the PNP transistor, the first end of the pull-down resistor, and the second power end of the control circuit are connected.
3. The electronic cigarette power circuit of claim 2, wherein the energy storage circuit comprises a first diode and an energy storage capacitor, wherein an anode of the first diode is connected to a power output of the voltage conversion circuit, wherein a cathode of the first diode, a first end of the energy storage capacitor, an output of the voltage conversion circuit, and an emitter of the PNP triode are interconnected, and wherein a second end of the energy storage capacitor is grounded.
4. The electronic cigarette power circuit of claim 3, wherein the power down detection circuit further comprises a first current limiting resistor and a second current limiting resistor, wherein a first end of the first current limiting resistor is connected with a first power output end of the power module, a second end of the first current limiting resistor is connected with a first end of the isolation capacitor, a first end of the second current limiting resistor, a power output end of the tank circuit and a power input end of the PNP transistor are interconnected, and a second end of the second current limiting resistor, a second end of the isolation capacitor and a base of the PNP transistor are interconnected.
5. The electronic cigarette power circuit of claim 4, wherein the power down detection circuit further comprises a voltage regulator circuit for preventing over-voltage, the voltage regulator circuit comprising a voltage regulator diode, a cathode of the voltage regulator diode, a second end of the first current limiting resistor, and a first end of the isolation capacitor being interconnected, the second end of the voltage regulator diode being grounded.
6. An electronic cigarette, characterized by comprising an atomizer and an electronic cigarette power circuit according to any one of claims 1-5, wherein a controlled end of the atomizer is connected to a control end of the control circuit.
7. The electronic cigarette of claim 6, further comprising a memory for storing electronic cigarette parameters, a signal end of the memory being connected to a signal end of the control circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910284122.0A CN109907378B (en) | 2019-04-08 | 2019-04-08 | Electronic cigarette power supply circuit and electronic cigarette |
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| CN201910284122.0A CN109907378B (en) | 2019-04-08 | 2019-04-08 | Electronic cigarette power supply circuit and electronic cigarette |
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| CN109907378A CN109907378A (en) | 2019-06-21 |
| CN109907378B true CN109907378B (en) | 2024-05-14 |
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| CN111917399B (en) * | 2020-07-25 | 2023-01-06 | 苏州浪潮智能科技有限公司 | Time sequence control circuit and control method for enhancing reliability of abnormal power failure |
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| CN109907378A (en) | 2019-06-21 |
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