WO2019062467A1 - Power source control circuit and electronic cigarette - Google Patents

Abstract

Disclosed in the present utility model is a power source control circuit. The power source control circuit comprises a power supply switch, a power source switch, a filter capacitor, a booster resistor, and a discharge resistor. The power supply switch comprises a first end, a second send, and a third end. The power source switch comprises a first end, a second end, and a third end. The first end of the power source switch is grounded, and the second end of the power source switch is connected to the first end of the power supply switch. A first end of the filter capacitor is connected to the third end of the power supply switch, and a second end of the filter capacitor is grounded. A first end of the booster resistor is connected to the first end of the power supply switch, and a second end of the booster resistor is connected to the second end of the power supply switch. A first end of the discharge resistor is connected to the third end of the power supply switch and is also connected to a master control circuit, and a second end of the discharge resistor is connected to the third end of the power source switch. In the power source control circuit in the present utility model, after the first end of the power source switch is connected to the third end, charges on an energy element of the master control circuit is released by the discharge resistor. Also disposed in the present utility model is an electronic cigarette. After a power source is switched off by the power source switch, the electronic cigarette can immediately stop work.

Description

Power control circuit and electronic cigarette Technical field

The utility model relates to the technical field of electronic control, in particular to a power supply control circuit and an electronic cigarette.

Background technique

As a substitute for tobacco products, e-cigarettes have become a kind of use equipment that more and more people carry with them because they are easy to use and have a large amount of smoke. In general, when the electronic cigarette is turned on, if it does not perform the smoking operation for a period of time, it will automatically enter the power saving mode, reduce the power consumption of the electronic cigarette, and avoid the lithium battery inside the electronic cigarette because the power consumption consumes a large amount of power or for a long time. When the power is turned on and the power is discharged, the life of the lithium battery is prevented from being damaged.

The manual electronic cigarette can be turned off by the button on the main control circuit to stop the power consumption of the lithium battery. Most automatic e-cigarettes do not have a button, and they cannot rely on the airflow sensor to turn off the main power supply. In the process of rest, they can only enter the power-saving mode to reduce power consumption. In order to stop the power consumption of the lithium battery in the power saving mode, some automatic electronic cigarettes increase the power switch, and the power switch is used to turn off the electronic cigarette main power supply. However, after the power switch is used to turn off the main power supply, the electronic cigarette can continue to work for a period of time because the storage component of the main control circuit stores a large amount of electric energy, so that the electronic cigarette cannot stop working in time.

Utility model content

The utility model provides a power supply control circuit and an electronic cigarette, which can solve the problem that after the power switch is used to turn off the total power supply, the electronic cigarette can also continue to work for a period of time due to the storage of a large amount of electric energy by the storage component of the main control circuit, so that the electronic The problem that smoke cannot stop working in time.

The technical solution is as follows:

The utility model discloses a power supply control circuit, which comprises a power supply switch, a power switch, a filter capacitor, a step-up resistor, and a discharge resistor. A power switch, the power switch includes a first end, a second end, and a third end. The power switch includes a first end, a second end, and a third end; the first end of the power switch is grounded, and the second end of the power switch is connected to the first end of the power switch. The first end of the filter capacitor is connected to the third end of the power supply switch, and the second end of the filter capacitor is grounded. The first end of the boosting resistor is connected to the first end of the power supply switch, and the second end of the boosting resistor is connected to the second end of the power supply switch. The first end of the discharge resistor is connected to the third end of the power switch, the first end of the discharge resistor is further connected to the main control circuit, the second end of the discharge resistor and the third end of the power switch Connected to the end. The main control circuit receives a driving voltage through the power supply switch when the first end and the second end of the power switch are connected; when the first end and the third end of the power switch are connected, the main control The circuit stops receiving the drive voltage, and the charge of the energy storage element on the main control circuit is discharged through the discharge resistor.

In one embodiment, the power switch is a P-channel MOS transistor, the first end of the power switch is a gate, the second end of the power switch is a drain, and the third end of the power switch is Source.

In one embodiment, the power control circuit includes a storage capacitor, a first end of the storage capacitor is connected to a second end of the power switch, and a second end of the storage capacitor is grounded.

In one embodiment, the power control circuit includes a first voltage dividing resistor, a second voltage dividing resistor, and a charging switch, and the first end of the first voltage dividing resistor is connected to the charging port, the first voltage dividing a second end of the resistor is connected to the first end of the charging switch, a first end of the second voltage dividing resistor is connected to the first end of the charging switch, and a second end of the second voltage dividing resistor is a second end of the charging switch is connected, a second end of the charging switch is grounded, a third end of the charging switch is connected to a first end of the power supply switch, and the charging port is connected to the power supply switch by a charging circuit The third end is connected. In one embodiment, the charging port is a USB interface.

In one embodiment, the charging switch is a three-pole transistor, a first end of the charging switch is a base, a second end of the charging switch is an emitter, and a third end of the charging switch is a set electrode.

In one embodiment, the power switch is a toggle switch.

The utility model provides an electronic cigarette, which comprises the above power supply control circuit.

In one embodiment, the electronic cigarette further includes an atomizing circuit, the first input end of the atomizing circuit is connected to the output end of the main control circuit, and the second input end of the atomizing circuit is connected to the power supply The third end of the switch is connected.

In one embodiment, the electronic cigarette further includes a charging circuit, and the charging circuit is coupled to the third end of the power switch.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:

The power control circuit of the present invention can be connected to the third end of the power switch after the first end of the power switch is connected, the main control circuit stops receiving the driving voltage, and the charge of the energy storage element of the main control circuit is released through the discharge resistor, so that the main The control circuit stops working in time. The electronic cigarette of the utility model can stop working in time after the user operates the power switch to turn off the power.

The above description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood, and can be implemented according to the contents of the specification, and the above and other objects, features and advantages of the present invention can be further improved. It is obvious that the following preferred embodiments are described in detail with reference to the accompanying drawings.

DRAWINGS

1 is a circuit diagram of a power supply control circuit according to a first embodiment of the present invention;

2 is a circuit diagram of a power supply control circuit according to a second embodiment of the present invention;

3 is a circuit diagram of an electronic cigarette according to a third embodiment of the present invention.

Detailed ways

In order to further explain the technical means and functions of the present invention for achieving the purpose of the predetermined utility model, the power supply control circuit and the device thereof according to the present invention will be further described below with reference to the accompanying drawings and preferred embodiments. , features and effects, as detailed below.

The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. Through the description of the specific embodiments, the technical means and functions of the present invention for achieving the intended purpose can be more deeply and specifically understood. However, the drawings are only for reference and explanation, and are not used for the present application. New restrictions.

First embodiment

1 is a circuit diagram of a power supply control circuit 10 according to a first embodiment of the present invention. As shown in FIG. 1, the power control circuit 10 of the present embodiment includes a boosting resistor R1, a power supply switch T1, a discharge resistor R2, a filter capacitor C1, and a power switch T2. The power switch T1 includes a first end, a second end, and a third end. The power switch T2 includes a first end, a second end, and a third end; the first end of the power switch T2 is grounded, and the second end of the power switch T2 is connected to the first end of the power switch T1. The first end of the filter capacitor C1 is connected to the third end of the power supply switch T1, and the second end of the filter capacitor C1 is grounded. The first end of the boosting resistor R1 is connected to the first end of the power supply switch T1, and the second end of the boosting resistor R1 is connected to the second end of the power supply switch T1. The first end of the discharge resistor R2 is connected to the third end of the power supply switch T1, the first end of the discharge resistor R2 is also connected to the main control circuit 20, and the second end of the discharge resistor R2 is connected to the third end of the power switch T2. When the first end of the power switch T2 is connected to the second end, the main control circuit 20 receives the driving voltage V1 through the power supply switch T1; when the first end and the third end of the power switch T2 are connected, the main control circuit 20 stops receiving the driving. At voltage V1, the charge of the energy storage element on the main control circuit 20 is discharged through the discharge resistor R2.

Among them, the power supply switch T1 has the function of a switch. Specifically, when the first end of the power supply switch T1 receives the low voltage signal, the second end of the power supply switch T1 is controlled to be turned on with the third end of the power supply switch T1; and when the first end of the power supply switch T1 receives the high voltage signal The second end of the control power switch T1 is disconnected from the third end of the power supply switch T1.

In one embodiment, the power supply switch T1 is a P-channel MOS transistor, the first end of the power supply switch T1 is a gate, the second end of the power supply switch T1 is a drain, and the third end of the power supply switch T1 is a source. However, the present invention is not limited thereto, and the power switch T1 may also be a three-pole transistor or the like.

In an embodiment, the power switch T2 is a toggle switch. However, the present invention is not limited thereto. For example, the power switch T2 may be a single pole double throw switch, a touch switch, a touch panel, a touch screen, or the like.

Specifically, when the first end of the power switch T2 is connected to the second end of the power switch T2, the first end of the power switch T1 is grounded through the power switch T2, and the first end of the power switch T1 receives the low voltage signal, and the power switch The second end of the T1 control power supply switch T1 is electrically connected to the third end of the power supply switch T1, that is, the power supply switch T1 is in an on state. Thus, the main control circuit 20 connected to the third end of the power supply switch T1 receives the driving voltage V1 through the power supply switch T1, thereby causing the main control circuit 20 to start operating. The filter capacitor C1 connected to the third end of the power switch T1 filters and stores the output signal of the third end of the power switch T1. The component that provides the driving voltage V1 can be, but is not limited to, the battery 30, and can be, for example, a DC power source or a transformer rectifier filter power supply.

When the first end of the power switch T2 is connected to the third end of the power switch T2, the first end of the power supply switch T1 receives the driving voltage V1 through the boosting resistor R1, and the potential of the first end of the power supply switch T1 is pulled up to a high voltage. The power switch T1 controls the second end of the power supply switch T1 to be disconnected from the third end of the power supply switch T1, that is, the power supply switch T1 is in an open state. Therefore, the main control circuit 20 connected to the third end of the power supply switch T1 cannot receive the driving voltage V1 through the power supply switch T1, so that the main control circuit 20 stops operating. At the same time, the first end of the discharge resistor R2 is grounded through the power switch T2, and the second end of the discharge resistor R2 is connected to the first end of the filter capacitor C1 and the main control circuit 20, and the energy storage on the filter capacitor C1 and the main control circuit 20 The charge of components such as capacitors, inductors, etc. is discharged through the discharge resistor R2, causing the main control circuit 20 to stop working in time.

In the power control circuit 10 of this embodiment, when the first end of the power switch T2 is connected to the second end of the power switch T2, the main control circuit 20 receives the driving voltage V1 to start working; when the first end of the power switch T2 and the power switch When the third end of T2 is connected, the main control circuit 20 stops receiving the driving voltage V1, and the filter capacitor C1 and the charge of the energy storage element on the main control circuit 20 are discharged through the discharge resistor R2, so that the main control circuit 20 stops working in time.

Second embodiment

2 is a circuit diagram of a power supply control circuit 10 according to a second embodiment of the present invention. The power control circuit 10 shown in FIG. 2 is basically the same as the power control circuit 10 shown in FIG. 1 except that the power supply control circuit 10 further includes a storage capacitor C2 and a first voltage dividing resistor R3. The second voltage dividing resistor R4 and the charging switch T3.

The first end of the storage capacitor C2 is connected to the second end of the power supply switch T1, and the second end of the storage capacitor C2 is grounded. The driving voltage V1 received by the second end of the power switch T1 is provided by the battery 30 (for example, a lithium battery), and the storage capacitor C2 is connected to the positive pole of the battery 30, and the energy outputted by the battery 30 has energy storage and filtering. .

The charging switch T3 has a function as a switch. Specifically, when the first end of the charging switch T3 receives the high voltage signal, the second end of the charging switch T3 is controlled to be electrically connected to the third end of the charging switch T3; and when the first end of the charging switch T3 receives the low voltage signal The second end of the charging switch T3 is controlled to be disconnected from the third end of the charging switch T3.

The first end of the first voltage dividing resistor R3 is connected to the charging port, the second end of the first voltage dividing resistor R3 is connected to the first end of the charging switch T3, and the first end of the second voltage dividing resistor R4 is connected to the charging switch T3. The first end is connected, the second end of the second voltage dividing resistor R4 is connected to the second end of the charging switch T3, the second end of the charging switch T3 is grounded, and the third end of the charging switch T3 is connected to the first end of the power supply switch T1. The charging port is connected to the third end of the power supply switch T1 through the charging circuit 40.

Specifically, when the charging port receives the external voltage V2, for example, 5V voltage, the first voltage dividing resistor R3 and the second voltage dividing resistor R4 connected in series are used as the voltage dividing resistor, and the first end of the charging switch T3 is connected to the first voltage dividing resistor R3. a node between the second voltage dividing resistor R4, so that the first end of the charging switch T3 receives a high voltage divided by the external voltage V2, for example, 3.4V, and the charging switch T3 controls the second end and the third end of the charging switch T3. Turning on, that is, the charging switch T3 is in an on state. When the charging switch T3 is in the on state, the third end of the charging switch T3 is grounded through the second end, and the third end of the charging switch T3 is a low voltage signal.

At this time, if the first end of the power switch T2 is connected to the second end of the power switch T2, the first end of the power switch T1 is grounded through the power switch T2, so that the first end of the power switch T1 receives the low voltage signal, and then the power is supplied. The switch T1 controls the second end of the power supply switch T1 to be electrically connected to the third end of the power supply switch T1, that is, the power supply switch T1 is in an on state.

If the first end of the power switch T2 is connected to the third end of the power switch T2, the first end of the power switch T1 is grounded through the charging switch T3, so that the first end of the power switch T1 receives the low voltage signal, and the power switch T1 controls The second end of the power supply switch T1 is electrically connected to the third end of the power supply switch T1, that is, the power supply switch T1 is in an on state.

Therefore, when the charging port receives the external voltage V2, for example, 5V, the charging switch T3 is in an on state, and the power supply switch T1 is always in an on state regardless of whether the first end of the power switch T2 is connected to the second end of the power switch T2. The charging port is connected to the third end of the power supply switch T1 through the charging circuit 40. The power supply switch T1 is connected to the battery 30 that supplies the driving voltage V1, and the battery 30 receives the charging current of the external voltage V2 and charges it. At the same time, the charging port is connected to the main control circuit 20 through the charging circuit 40, and the main control circuit 20 receives the driving current of the external voltage V2 to operate, and the main control circuit 20 can thereby perform charging protection and the like.

When the charging port stops receiving the external voltage V2, for example, 5V voltage, no current flows through the first voltage dividing resistor R3 and the second voltage dividing resistor R4, and the second terminal of the second voltage dividing resistor R4 is grounded, and the charging switch T3 is When one end is connected to the node between the first voltage dividing resistor R3 and the second voltage dividing resistor R4, the first terminal voltage of the charging switch T3 is at a low level, so that the second end and the third end of the charging switch T3 are disconnected, that is, The charging switch T3 is in an off state.

At this time, if the first end of the power switch T2 is connected to the second end of the power switch T2, the first end of the power switch T1 is grounded through the power switch T2, so that the first end of the power switch T1 receives the low voltage signal, and then the power is supplied. The switch T1 controls the second end of the power supply switch T1 to be electrically connected to the third end of the power supply switch T1, that is, the power supply switch T1 is in an on state. Thus, the main control circuit 20 connected to the third end of the power supply switch T1 receives the driving voltage V1 through the power supply switch T1, thereby causing the main control circuit 20 to start operating.

If the first end of the power switch T2 is connected to the third end of the power switch T2, the first end of the power supply switch T1 receives the driving voltage V1 through the boosting resistor R1, and the potential of the first end of the power supply switch T1 is pulled up to a high voltage. The power switch T1 controls the second end of the power supply switch T1 to be disconnected from the third end of the power supply switch T1, that is, the power supply switch T1 is in an open state. Therefore, the main control circuit 20 connected to the third end of the power supply switch T1 cannot receive the driving voltage V1 through the power supply switch T1, so that the main control circuit 20 stops operating. At the same time, the first end of the discharge resistor R2 is grounded through the power switch T2, and the second end of the discharge resistor R2 is connected to the first end of the filter capacitor C1 and the main control circuit 20, and the energy storage on the filter capacitor C1 and the main control circuit 20 The charge of components such as capacitors, inductors, etc. is discharged through the discharge resistor R2, causing the main control circuit 20 to stop working in time.

Therefore, when the charging port stops receiving the external voltage V2, the charging switch T3 is in the off state. Meanwhile, if the first end of the power switch T2 is connected to the second end of the power switch T2, the main control circuit 20 receives the driving voltage V1 and starts to work; if the first end of the power switch T2 is connected to the third end of the power switch T2 Then, the main control circuit 20 stops receiving the driving voltage V1, and the filter capacitor C1 and the charge of the energy storage element on the main control circuit 20 are discharged through the discharge resistor R2, so that the main control circuit 20 stops working in time.

In one embodiment, the charging switch T3 is a three-pole transistor, the first end of the charging switch T3 is a base, the second end of the charging switch T3 is an emitter, and the third end of the charging switch T3 is a collector. However, the present invention is not limited thereto, and the charging switch T3 may also be an N-channel MOS transistor or the like.

In an embodiment, the charging port is a USB interface for receiving an external voltage V2. However, the present invention is not limited thereto, for example, the charging port may be a lightning interface or the like.

In the power supply control circuit 10 of the embodiment, when the charging port receives the external voltage V2, the first voltage dividing resistor R3 and the second voltage dividing resistor R4 are used as the voltage dividing resistors, so that the charging switch T3 is in an on state, and then the power supply switch T1. It is in an on state, so that the battery 30 receives the charging current of the external voltage V2 and charges it. At the same time, the charging port is connected to the main control circuit 20 through the charging circuit 40, and the main control circuit 20 receives the driving current of the external voltage V2 to operate.

When the charging port stops receiving the external voltage V2, if the first end of the power switch T2 is connected to the second end of the power switch T2, the main control circuit 20 receives the driving voltage V1 and starts to work; if the first end of the power switch T2 and the power switch The third end of T2 is connected, the main control circuit 20 stops receiving the driving voltage V1, and the filter capacitor C1 and the charge of the energy storage element on the main control circuit 20 are discharged through the discharge resistor R2, so that the main control circuit 20 stops working in time.

Third embodiment

3 is a circuit diagram of an electronic cigarette according to a third embodiment of the present invention. As shown in FIG. 3, the present invention further provides an electronic cigarette including a power control circuit 10, a main control circuit 20, a battery 30, a charging circuit 40, and an atomizing circuit 50. For the circuit connection and operation principle of the power control circuit 10, the main control circuit 20, the battery 30, and the charging circuit 40, please refer to Embodiment 1 and Embodiment 2.

The atomizing circuit 50 is configured to atomize the liquid smoke for the user to smoke. Specifically, the first input end of the atomizing circuit 50 is connected to the output end of the main control circuit 20, and the atomizing circuit 50 adjusts the working state according to the signal provided by the received main control circuit 20, such as working temperature, working time, and operating power. and many more. The second input end of the atomizing circuit 50 is connected to the third end of the power supply switch T1. When the power supply switch T1 is in the conducting state, the second input end of the atomizing circuit 50 receives the driving voltage V1 through the power supply switch T1 and starts to work.

The charging circuit 40 is connected to the third end of the power supply switch T1, and the external voltage V2 is connected to the battery 30 that supplies the driving voltage V1 through the turned-on power supply switch T1 to charge the battery 30. At the same time, the external voltage V2 is also connected to the main control circuit 20, and the main control circuit 20 is directly driven to start operation.

Specifically, when the charging circuit 40 receives the external voltage V2, the charging circuit 40 is connected to the third end of the power supply switch T1, and the power supply switch T1 is connected to the battery 30 that supplies the driving voltage V1, and the battery 30 receives the charging current of the external voltage V2 and Charge it. At the same time, the charging port is connected to the main control circuit 20 through the charging circuit 40, and the main control circuit 20 receives the driving current of the external voltage V2 to operate. Alternatively, the atomizing circuit 50 receives the driving voltage V1 through the turned-on power supply switch T1, thereby causing the atomizing circuit 50 to start operating.

When the charging circuit 40 does not receive the external voltage V2, if the first end of the power switch T2 is connected to the second end of the power switch T2, the first end of the power supply switch T1 is grounded through the power switch T2, so that the first end of the power switch T1 When the terminal receives the low voltage signal, the power supply switch T1 controls the second end of the power supply switch T1 to be turned on with the third end of the power supply switch T1, that is, the power supply switch T1 is in an on state. At this time, the second end of the power supply switch T1 receives the driving voltage V1, and the main control circuit 20 connected to the third end of the power supply switch T1 receives the driving voltage V1 through the power supply switch T1, thereby causing the main control circuit 20 to start operating. Similarly, the atomizing circuit 50 also receives the driving voltage V1 through the power supply switch T1, thereby causing the atomizing circuit 50 to start operating.

When the charging circuit 40 does not receive the external voltage V2, if the first end of the power switch T2 is connected to the third end of the power switch T2, that is, the user operates the power switch T2 to turn off the power, the first end of the power switch T1 is boosted. The resistor R1 receives the driving voltage V1, the potential of the first end of the power supply switch T1 is pulled up to a high voltage, and the power supply switch T1 controls the second end of the power supply switch T1 to be disconnected from the third end of the power supply switch T1, that is, the power supply switch T1 is off. Open state. Therefore, the main control circuit 20 connected to the third end of the power supply switch T1 cannot receive the driving voltage V1 through the power supply switch T1, so that the main control circuit 20 stops operating. At the same time, the atomizing circuit 50 cannot receive the driving voltage V1 through the power supply switch T1, so that the atomizing circuit 50 stops operating. At the same time, the first end of the discharge resistor R2 is grounded through the power switch T2, and the second end of the discharge resistor R2 is connected to the first end of the filter capacitor C1 and the main control circuit 20, and the energy storage on the filter capacitor C1 and the main control circuit 20 The charge of components such as capacitors, inductors, etc. is discharged through the discharge resistor R2, causing the main control circuit 20 to stop working in time, and the electronic cigarette is turned off.

The electronic cigarette of the present invention can stop receiving the driving voltage V1 after the user operates the power switch T2 to turn off the power, and at the same time, the discharging resistor R2 is grounded through the power switch T2 to charge the energy storage element of the main control circuit 20. Release, so that the electronic cigarette stops working in time.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical solutions of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

Claims (10)

A power control circuit, characterized in that the power control circuit (10) comprises: a power switch (T1), the power switch (T1) includes a first end, a second end, and a third end; a power switch (T2), the power switch (T2) includes a first end, a second end, and a third end; a first end of the power switch (T2) is grounded, and a second end of the power switch (T2) Connected to the first end of the power switch (T1); a filter capacitor (C1), a first end of the filter capacitor (C1) is connected to a third end of the power supply switch (T1), and a second end of the filter capacitor (C1) is grounded; a boosting resistor (R1); a first end of the boosting resistor (R1) is connected to a first end of the power supply switch (T1), a second end of the boosting resistor (R1) and the power supply switch The second ends of (T1) are connected; a discharge resistor (R2), a first end of the discharge resistor (R2) is connected to a third end of the power supply switch (T1), and a first end of the discharge resistor (R2) is further connected to a main control circuit (20) Connected, the second end of the discharge resistor (R2) is connected to the third end of the power switch (T2); Wherein, when the first end of the power switch (T2) is connected to the second end of the power switch (T2), the main control circuit (20) receives the driving voltage (V1) through the power supply switch (T1) When the first end of the power switch (T2) is connected to the third end of the power source (T2), the main control circuit (20) stops receiving the driving voltage (V1), and the main control circuit ( The charge of the upper energy storage element is released through the discharge resistor (R2). The power supply control circuit according to claim 1, wherein said power supply switch (T1) is a P-channel MOS transistor, said first end of said power supply switch (T1) is a gate, and said power supply switch (T1) The second end is a drain, and the third end of the power switch (T1) is a source. The power supply control circuit according to claim 1, wherein said power control circuit (10) comprises a storage capacitor (C2), said first end of said storage capacitor (C2) and said power supply switch (T1) The second end of the storage capacitor (C2) is connected to the ground. The power supply control circuit according to claim 1, wherein said power supply control circuit (10) comprises a first voltage dividing resistor (R3), a second voltage dividing resistor (R4), and a charging switch (T3), a first end of the first voltage dividing resistor (R3) is connected to the charging port, and a second end of the first voltage dividing resistor (R3) is connected to the first end of the charging switch (T3), the second point a first end of the voltage resistor (R4) is connected to the first end of the charging switch (T3), and a second end of the second voltage dividing resistor (R4) is connected to the second end of the charging switch (T3) The second end of the charging switch (T3) is grounded, the third end of the charging switch (T3) is connected to the first end of the power supply switch (T1), and the charging port is connected to the charging circuit (40) The third end of the power supply switch (T1) is connected. The power control circuit of claim 4 wherein said charging port is a USB interface. The power supply control circuit according to claim 4, wherein said charging switch (T3) is a three-pole transistor, said first end of said charging switch (T3) is a base, and said charging switch (T3) The second end is an emitter, and the third end of the charging switch (T3) is a collector. The power supply control circuit according to claim 1, wherein said power switch (T2) is a toggle switch. An electronic cigarette, characterized in that the electronic cigarette comprises the power supply control circuit according to any one of claims 1 to 7. The electronic cigarette according to claim 8, wherein the electronic cigarette comprises an atomizing circuit (50), a first input end of the atomizing circuit (50) and an output of the main control circuit (20) Connected to the end, the second input end of the atomizing circuit (50) is connected to the third end of the power supply switch (T1). The electronic cigarette according to claim 9, wherein said electronic cigarette further comprises a charging circuit (40), said charging circuit (40) being connected to a third end of said power supply switch (T1).

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