CN210581033U

CN210581033U - Power regulating circuit of electronic cigarette and electronic cigarette

Info

Publication number: CN210581033U
Application number: CN201921340173.2U
Authority: CN
Inventors: 申剑
Original assignee: Shenzhen Haipai Technology Co ltd
Current assignee: Shenzhen Haipai Technology Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-05-22
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a power regulating circuit of electronic cigarette and electronic cigarette, the power regulating circuit of electronic cigarette includes controller, gear regulating circuit and atomizer drive circuit, the power input end of controller is connected with the output of system power, the power output end of controller with the input of gear regulating circuit is connected, the first input end of controller with the output of gear regulating circuit is connected; the first output end of the controller is connected with the controlled end of the atomizer driving circuit, the input end of the atomizer driving circuit is connected with the output end of the system power supply, and the output end of the atomizer driving circuit is connected with the atomizer. The technical scheme of the utility model, can the accurate power of adjusting output to electron cigarette.

Description

Power regulating circuit of electronic cigarette and electronic cigarette

Technical Field

The utility model relates to an electron cigarette technical field, in particular to power regulating circuit and electron cigarette of electron cigarette.

Background

The electronic cigarette is usually powered by a battery, and the higher the power output by the battery is, the higher the temperature of a heating wire of the electronic cigarette is, and the larger the atomized smoke quantity is. For the electronic cigarette with adjustable power, the output power of the electronic cigarette is often adjusted through the keys and the potentiometer, but the potentiometer has low precision, so that the effect of adjusting the output power of the electronic cigarette through the potentiometer is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power regulating circuit and electron cigarette of electron cigarette aims at improving the accuracy nature of adjusting the electron cigarette gear, improves the output's of electron cigarette accuracy.

In order to achieve the above object, the utility model provides a power regulating circuit of electronic cigarette, the power regulating circuit of electronic cigarette includes controller, gear regulating circuit and atomizer drive circuit, the power input end of controller is connected with the output of system power, the power output end of controller with the input of gear regulating circuit is connected, the first input end of controller with the output of gear regulating circuit is connected; the first output end of the controller is connected with the controlled end of the atomizer driving circuit, the input end of the atomizer driving circuit is connected with the output end of the system power supply, and the output end of the atomizer driving circuit is connected with the atomizer; wherein,

the gear adjusting circuit is used for receiving a gear adjusting signal and outputting a gear voltage signal corresponding to the gear adjusting signal to the controller;

the controller is used for receiving the gear voltage signal, generating a control signal and outputting the control signal to the atomizer driving circuit;

and the atomization driving circuit is used for receiving the control signal and adjusting the power output to the atomizer.

Optionally, the gear adjusting circuit includes a first resistor, n second resistors connected in parallel, a first connection end, and n second connection ends, where the first end of the first resistor is an input end of the gear adjusting circuit, and the second end of the first resistor is an output end of the gear adjusting circuit; the first ends of the n second resistors are connected with the second ends of the first resistors, and the second ends of the n second resistors are correspondingly connected with the n second connecting ends one by one; the first connecting end is used for being connected with one of the second connecting ends.

Optionally, the resistance values of the n second resistors are not equal to each other.

Optionally, the atomizer driving circuit includes a third resistor, a first capacitor, and a switching tube, a controlled end of the switching tube is a controlled end of the atomizer driving circuit and is connected to a second end of the third resistor, an input end of the switching tube is an input end of the atomizer driving circuit and is connected to a first end of the third resistor, and an output end of the switching tube is an output end of the atomizer driving circuit; one end of the first capacitor is connected with the output end of the switch tube, and the other end of the first capacitor is grounded.

Optionally, the switch tube is a P-type insulated field effect tube, a gate of the P-type insulated field effect tube is a controlled end of the switch tube, a source of the P-type insulated field effect tube is an input end of the switch tube, and a drain of the P-type insulated field effect tube is an output end of the switch tube.

Optionally, the power regulating circuit of the electronic cigarette further comprises a power detection circuit, a detection end of the power detection circuit is connected with an output end of the atomizer driving circuit, a controlled end of the power detection circuit is connected with a second output end of the controller, and an output end of the power detection circuit is connected with a second input end of the controller.

Optionally, the power detection circuit includes a fourth resistor and a fifth resistor, a first end of the fourth resistor is a detection end of the power detection circuit, a common end of the fourth resistor and the fifth resistor is an output end of the power detection circuit, and a second end of the fifth resistor is a controlled end of the power detection circuit.

Optionally, the power regulating circuit of the electronic cigarette further includes an alarm device, and an input end of the alarm device is connected with a third output end of the controller.

Optionally, the power regulating circuit of the electronic cigarette further comprises a system power supply and a charging circuit, an output end of the charging circuit is connected with an input end of the system power supply, and an output end of the system power supply is connected with a power input end of the controller and an input end of the atomizer driving circuit.

In order to achieve the above object, the present invention also provides an electronic cigarette, which includes the power regulating circuit of the electronic cigarette.

The technical scheme of the utility model, receive the gear adjustment signal of user's input through setting up gear adjusting circuit, and output and gear voltage signal to the controller that the gear adjustment signal corresponds, the controller is according to received gear voltage signal, produce the control signal who corresponds with gear voltage signal, and export to atomizer drive circuit, atomizer drive circuit is according to received control signal, adjust the power of exporting to the atomizer, make the smog volume of atomizer can satisfy user's actual demand, user experience is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a block diagram of an embodiment of a power regulating circuit of an electronic cigarette according to the present invention;

FIG. 2 is a schematic circuit diagram of an embodiment of the shift position adjusting circuit shown in FIG. 1;

fig. 3 is a block diagram of another embodiment of the power regulating circuit of the electronic cigarette according to the present invention;

FIG. 4 is a schematic circuit diagram of an embodiment of the atomizer driving circuit and the power detection circuit shown in FIG. 3;

fig. 5 is a block diagram of another embodiment of the power regulating circuit of the electronic cigarette of the present invention.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a power regulating circuit of electron cigarette.

Referring to fig. 1, the power regulating circuit of the electronic cigarette includes a controller 20, a gear regulating circuit 30 and an atomizer driving circuit 40, a power input end of the controller 20 is connected with an output end of a system power supply 10, a power output end of the controller 20 is connected with an input end of the gear regulating circuit 30, and a first input end of the controller 20 is connected with an output end of the gear regulating circuit 30; the first output end of the controller 20 is connected to the controlled end of the atomizer driving circuit 40, the input end of the atomizer driving circuit 40 is connected to the output end of the system power supply 10, and the output end of the atomizer driving circuit 40 is connected to the atomizer 50.

The controller 20 may be a microprocessor such as a single chip, a DSP, an FPGA, or the like, which is not limited herein; and an ADC module may be integrated within the controller 20.

The gear adjusting circuit 30 has a plurality of gears, which are different in gear and different in output gear voltage. The gear adjusting circuit 30 may be implemented by a potentiometer, or implemented by a plurality of resistor series circuits, or implemented by a plurality of resistor parallel circuits, and when implemented by a plurality of resistor series circuits, or implemented by a plurality of resistor parallel circuits, the gear selecting circuit may be implemented by changing the resistance value of the resistor connected to the circuit.

The atomization driving circuit 40 may be implemented by various transistor circuits, such as an insulating fet, a triode, and other composite switching circuits composed of a plurality of transistors, but not limited thereto.

Specifically, the surface of electron cigarette is equipped with gear selection knob, and gear selection knob can be selected for ball contact formula knob, can carry out 360 rotations, and the user can select corresponding gear through gear selection knob. The power output terminal RP EN of the controller 20 outputs a voltage to power the gear adjusting circuit 30. When receiving a gear adjustment signal input by a user, the gear adjustment circuit 30 outputs a gear voltage signal corresponding to a current gear to a first input end ADC RP of the controller 20, where the first input end ADC RP of the controller is an analog-to-digital conversion pin of the controller 20; for example, the gear adjusting circuit 30 is set to include a low gear, a middle gear, and a high gear, and when the user selects the low gear, the gear adjusting circuit 30 outputs a gear voltage signal corresponding to the low gear to the controller 20; when the user selects the middle gear, the gear adjusting circuit 30 outputs a gear voltage signal corresponding to the middle gear to the controller 20, and the gear voltage signals output by the gear adjusting circuit 30 have different values. The controller 20 analyzes and processes the gear voltage signal output by the gear adjusting circuit 30 by running or executing a software program and a module stored in a memory of the controller 20 to generate a corresponding control signal, which may be a PWM pulse signal, and outputs the control signal to the atomizer driving circuit 40, where the gear voltage signal received by the controller 20 has different values and the duty ratio of the output PWM pulse signal is different. The controller 20 adjusts the power output by the atomizer driving circuit 40 by adjusting the duty ratio of the PWM pulse signal, so as to adjust the smoke amount of the atomizer 50 to meet the actual needs of the user. Moreover, the controller 20 supplies power to the gear adjusting circuit 30, so that the stability of the gear adjusting circuit 30 can be ensured, and the detection precision of the controller 20 is effectively improved.

According to the technical scheme of the utility model, when the user adjusts the gear of the electronic cigarette through the gear selection knob, the gear adjusting circuit 30 outputs the gear voltage signal corresponding to the current gear to the controller 20 according to the received gear adjusting signal, and the controller 20 generates the PWM pulse signal corresponding to the gear voltage signal to control the output power of the atomizer driving circuit 40; because the gear is different, the duty ratio of the PWM pulse signal output by the controller 20 is different, and the power output by the atomizer driving circuit 40 is different, so that the smoke amount of the atomizer 50 can meet the actual demand of the user, and the user experience is good.

In an embodiment, referring to fig. 2, the gear adjusting circuit 30 includes a first resistor R1, n second resistors R21-R2 n connected in parallel, a first connection terminal P0, and n second connection terminals P1-Pn, a first terminal of the first resistor R1 is an input terminal of the gear adjusting circuit 30, and a second terminal of the first resistor R1 is an output terminal of the gear adjusting circuit 30; first ends of the n second resistors R21-R2 n are all connected with a second end of the first resistor R1, and second ends of the n second resistors R21-R2 n are correspondingly connected with the n second connection ends P1-Pn one by one; the first connection end P0 is used for connecting with one of the second connection ends, and n is an integer greater than or equal to 1.

In order to enable different gears to correspond to different gear voltage signals, the resistance values of the n second resistors P1-Pn are not equal.

For convenience of explaining the concept of the present embodiment, as shown in fig. 2, the n second resistors are respectively represented by R21, R22, R23 … … R2n, wherein the resistances of R21, R22, R23 … … R2n are not equal; the n second connecting ends are respectively denoted by P1, P2 and P3 … … Pn and correspond to a plurality of gears of the electronic cigarette. The first ends of R21, R22 and R23 … … R2n are connected with the second end of R1, and the second ends of R21, R22 and R23 … … R2n are correspondingly connected with P1, P2 and P3 … … Pn respectively; the first connection end is denoted by P0. The voltage output by the power supply output terminal RP EN of the controller 20 is denoted by U1, and the value of the notch voltage signal received by the first input terminal ADC RP of the controller 20 is denoted by U2.

The user can select a corresponding gear through a gear selection knob arranged on the outer surface of the electronic cigarette, namely, the P0 is connected with one of the P1 Pn. Since the resistances of R21, R22, and R23 … … R2n are not equal to each other, when the voltage output by the power output end RP EN of the controller 20 is fixed, the second connection end connected to P0 is different, the resistance of the access circuit is different, the voltage U2 detected by the first input end ADC RP of the controller 20 is different, and the first input end ADC RP of the controller 20 is an analog-to-digital conversion pin of the controller 20. The first input terminal ADC RP of the controller 20 determines the current gear by detecting U2, and then generates a PWM pulse signal corresponding to the current gear and outputs the PWM pulse signal to the nebulizer drive circuit 40, so as to adjust the output power of the nebulizer drive circuit 40. Specifically, the value of the range voltage signal U2 output by the range adjustment circuit 30 to the controller 20 may be determined according to kirchhoff's law, i.e., when P0 is linked to P1, U2 ═ U1 × R21)/(R1+ R21, when P0 is linked to P2, U2 ═ U1 × R22)/(R1+ R22), and so on, when P0 is connected to Pn, U2 ═ (U1 × R2n)/(R1+ R2n. therefore, first input terminal ADC RP of controller 20 determines the current gear by detecting the value of gear voltage signal U2 output by gear adjustment circuit 30, and generates a PWM pulse signal corresponding to the current gear to the atomizer driving circuit 40, the gear adjusting circuit 30 is formed by connecting a plurality of resistors in parallel, because the cost of resistance is low, this for adopt the potentiometre to realize gear selection, can reduce the cost of electron cigarette by a wide margin, and the gear adjustment precision is higher.

The technical scheme of the utility model, parallelly connected constitution gear regulating circuit through a plurality of resistance, the gear is different, and the resistance that inserts the circuit is then different, and the gear voltage of gear regulating circuit 30 output is then different. The controller 20 determines a current gear according to the received gear voltage signal, and outputs a PWM pulse signal corresponding to the current gear to the nebulizer drive circuit 40 to control the output power of the nebulizer drive circuit 40; the smoke amount of the atomizer 50 can meet the actual requirements of users, the user experience is good, and the cost of the electronic cigarette is lower.

In an embodiment, referring to fig. 4, the nebulizer driving circuit 40 includes a third resistor R3, a first capacitor C1, and a switching tube Q1, a controlled end of the switching tube Q1 is a controlled end of the nebulizer driving circuit 40 and is connected to a second end of the third resistor R3, an input end of the switching tube Q1 is an input end of the nebulizer driving circuit 40 and is connected to a first end of the third resistor R3, and an output end of the switching tube Q1 is an output end of the nebulizer driving circuit 40; one end of the first capacitor C1 is connected to the output end of the switching tube Q1, and the other end of the first capacitor C1 is grounded.

Specifically, the controller 20 generates a PWM pulse signal with a corresponding duty ratio to the controlled end of the switching tube Q1 according to the gear adjusting voltage output by the gear adjusting circuit 30, so as to control the on-time of the switching tube Q1, where the on-time of the switching tube Q1 is different, the power output to the atomizer 50 is different, and the amount of smoke generated by the atomizer 50 is different. Therefore, the user can control the value of the gear voltage signal output by the gear adjusting circuit 30 through the gear selecting knob, and the controller 20 outputs the PWM pulse signal with the corresponding duty ratio to the controlled end of the switching tube Q1 according to the received gear voltage signal, so as to control the on-time of the switching tube Q1, and further control the power output to the atomizer 50, so that the smoke amount generated by the atomizer 50 can meet the actual smoking requirement of the user. The third resistor R3 is a pull-up resistor, and the first capacitor C1 is a filter capacitor and is used for improving the stability of the circuit.

Optionally, the switch tube Q1 is a P-type insulated field effect transistor, a gate of the P-type insulated field effect transistor is a controlled end of the switch tube Q1, a source of the P-type insulated field effect transistor is an input end of the switch tube Q1, and a drain of the P-type insulated field effect transistor is an output end of the switch tube Q1.

In an embodiment, referring to fig. 3, the power regulating circuit of the electronic cigarette further includes a power detecting circuit 60, a detecting terminal of the power detecting circuit 60 is connected to the output terminal of the atomizer driving circuit 40, a controlled terminal of the power detecting circuit 60 is connected to the second output terminal of the controller 20, and an output terminal of the power detecting circuit 60 is connected to the second input terminal of the controller 20.

In this embodiment, the power detection circuit 60 may be implemented by serially connecting a plurality of resistors to divide the voltage. The controlled end of the power detection circuit 60 is an enable end of the power detection circuit 60, and in an initial state, before the atomizer 50 is not connected to the circuit, the controlled end of the power detection circuit 60 is at a high level, and the power detection circuit 60 does not work, so that no extra power consumption is generated. When the controller 20 detects that the atomizer 50 is connected to the circuit, the controller 20 pulls down the level of the controlled end of the power detection circuit 60, so that the power detection circuit 60 starts to operate, the power detection circuit 60 detects the voltage signal output to the atomizer 50 in real time, and feeds back the detected voltage signal to the controller 20, so that the controller 20 can know the power output to the atomizer 50 in real time and perform corresponding operations, for example, control an indicator light of an electronic cigarette to display corresponding brightness, light color and the like.

In an embodiment, referring to fig. 4, the power detection circuit 60 includes a fourth resistor R4 and a fifth resistor R5, a first terminal of the fourth resistor R4 is a detection terminal of the power detection circuit 60, a common terminal of the fourth resistor R4 and the fifth resistor R5 is an output terminal of the power detection circuit 60, and a second terminal of the fifth resistor R5 is a controlled terminal of the power detection circuit 60.

The fourth resistor R4 and the fifth resistor R5 are connected in series to divide the voltage, so that the power output to the atomizer 50 is detected.

In an embodiment, referring to fig. 3, the power regulating circuit of the electronic cigarette further includes an alarm device 70, and an input terminal of the alarm device 70 is connected to a third output terminal of the controller 20.

Based on the above embodiments, the alarm device 70 may be a buzzer, an artificial voice device, an indicator light, or a display screen. The controller 20 analyzes and processes the voltage signal output by the power detection circuit 60 by running or executing software programs and modules stored in the memory of the controller 20 to generate corresponding control signals to control the alarm device 70 to perform corresponding operations. The preset voltage may be set according to a voltage value required for normal operation of the atomizer 50 by setting the preset voltage in the controller 20, for example, the voltage required for normal operation of the atomizer 50 is 4.0V, after the voltage is divided by the fourth resistor R4 and the fifth resistor R5, the voltage at the common terminal of the fourth resistor R4 and the fifth resistor R5 is 3.6V, and then the preset voltage may be set to 3.6V by the controller 20 and stored in the storage device. If the controller detects that the voltage at the common end of the fourth resistor R4 and the fifth resistor R5 is greater than the preset voltage, the controller 20 controls the alarm device 70 to send out an alarm prompt to remind the user.

In an embodiment, referring to fig. 5, the power regulating circuit of the electronic cigarette further includes a system power supply 10 and a charging circuit 80, an output terminal of the charging circuit 80 is connected to an input terminal of the system power supply 10, and an output terminal of the system power supply 10 is connected to a power input terminal of the controller 20 and an input terminal of the atomizer driving circuit 40.

In this embodiment, the system power supply 10 is a rechargeable battery, and the charging circuit 80 may be a charging chip, where the charging chip adjusts an input current signal, such as a current signal transmitted through a USB, so that the input current signal meets the requirement of the system power supply 10, and then transmits the adjusted current signal to the system power supply 10 to charge the system power supply 10.

The utility model also provides an electronic cigarette, this electronic cigarette includes atomizer, gear selection knob and as above-mentioned power regulating circuit of electronic cigarette, and the detailed structure of this electronic cigarette's power regulating circuit can refer to above-mentioned embodiment, and no longer elaborated here; it can be understood, because the utility model discloses a power regulating circuit of above-mentioned electron cigarette has been used in the electron cigarette, consequently, the utility model discloses the embodiment of electron cigarette includes all technical scheme of the whole embodiments of power regulating circuit of above-mentioned electron cigarette, and the technological effect that reaches is also identical, no longer gives details here.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. The power regulating circuit of the electronic cigarette is characterized by comprising a controller, a gear regulating circuit and an atomizer driving circuit, wherein a power supply input end of the controller is connected with an output end of a system power supply, a power supply output end of the controller is connected with an input end of the gear regulating circuit, and a first input end of the controller is connected with an output end of the gear regulating circuit; the first output end of the controller is connected with the controlled end of the atomizer driving circuit, the input end of the atomizer driving circuit is connected with the output end of the system power supply, and the output end of the atomizer driving circuit is connected with the atomizer; wherein,

2. The power regulating circuit of the electronic cigarette according to claim 1, wherein the gear regulating circuit comprises a first resistor, n second resistors connected in parallel, a first connection terminal, and n second connection terminals, wherein the first terminal of the first resistor is an input terminal of the gear regulating circuit, and the second terminal of the first resistor is an output terminal of the gear regulating circuit; the first ends of the n second resistors are connected with the second ends of the first resistors, and the second ends of the n second resistors are correspondingly connected with the n second connecting ends one by one; the first connecting end is used for being connected with one of the second connecting ends.

3. The power regulating circuit of the electronic cigarette according to claim 2, wherein the n second resistors have unequal resistances.

4. The power regulating circuit of the electronic cigarette according to claim 1, wherein the atomizer driving circuit comprises a third resistor, a first capacitor and a switching tube, a controlled end of the switching tube is a controlled end of the atomizer driving circuit and is connected with a second end of the third resistor, an input end of the switching tube is an input end of the atomizer driving circuit and is connected with a first end of the third resistor, and an output end of the switching tube is an output end of the atomizer driving circuit; one end of the first capacitor is connected with the output end of the switch tube, and the other end of the first capacitor is grounded.

5. The power conditioning circuit of claim 4, wherein the switch transistor is a P-type insulated field effect transistor, a gate of the P-type insulated field effect transistor is a controlled terminal of the switch transistor, a source of the P-type insulated field effect transistor is an input terminal of the switch transistor, and a drain of the P-type insulated field effect transistor is an output terminal of the switch transistor.

6. The power regulating circuit of the electronic cigarette according to any one of claims 1 to 5, wherein the power regulating circuit of the electronic cigarette further comprises a power detection circuit, a detection terminal of the power detection circuit is connected with the output terminal of the atomizer driving circuit, a controlled terminal of the power detection circuit is connected with the second output terminal of the controller, and an output terminal of the power detection circuit is connected with the second input terminal of the controller.

7. The power regulating circuit of the electronic cigarette according to claim 6, wherein the power detecting circuit comprises a fourth resistor and a fifth resistor, a first terminal of the fourth resistor is a detecting terminal of the power detecting circuit, a common terminal of the fourth resistor and the fifth resistor is an output terminal of the power detecting circuit, and a second terminal of the fifth resistor is a controlled terminal of the power detecting circuit.

8. The power regulating circuit of the electronic cigarette of claim 7, further comprising an alarm device, wherein an input of the alarm device is connected to the third output of the controller.

9. The power regulating circuit of the electronic cigarette of claim 1, further comprising a system power supply and a charging circuit, wherein an output of the charging circuit is connected to an input of the system power supply, and an output of the system power supply is connected to a power input of the controller and an input of the nebulizer drive circuit.

10. An electronic cigarette, characterized in that the electronic cigarette comprises a power regulating circuit of the electronic cigarette according to any one of claims 1 to 9.