A standby zero-power consumption circuit applied in a battery-powered device

Abstract

The application discloses a standby zero-power-consumption circuit applied to a battery-powered device, wherein a battery is connected with a discharging module in the battery-powered device through a discharging control circuit; during working, the discharging control circuit is turned on, and the battery supplies power to the discharging module through the discharging control circuit; during standby, the discharging control circuit is turned off, and the battery stops discharging; in the discharging control circuit, a first end of a third electronic switch is connected with a positive electrode of the battery, a second end of the third electronic switch is connected to an input end of the discharging module, and a third end of the third electronic switch is connected to a second end of a sixth electronic switch; the positive electrode of the battery is connected to the third end of the third electronic switch through R3; a first end of the sixth electronic switch is grounded; a third end of the sixth electronic switch is grounded through R10; the third end of the sixth electronic switch is a fifth node; the fifth node is connected with a second control signal, and is used for controlling the discharging control circuit to be turned on or turned off. The application can realize that the battery in the battery-powered device is in a zero-power-consumption state during standby.

Description

Technical Field

[0001] This application provides a field of battery charging and discharging control, specifically relating to a standby zero-power circuit used in battery-powered devices. Background Technology

[0002] Currently, in battery-powered devices, because the battery's capacity is limited, it still consumes power even when the device is in standby mode. Even with rechargeable batteries, the number of charging cycles will affect the battery's lifespan. Therefore, reducing the overall standby power consumption of the device is particularly important. Summary of the Invention

[0003] The purpose of this application is to provide a standby zero-power circuit for use in battery-powered devices, which can realize that the battery in the battery-powered device is in a zero-power state during standby.

[0004] The technical solution provided in this application is:

[0005] A standby zero-power circuit for use in battery-powered devices includes a discharge control circuit;

[0006] The battery is connected to the discharge module in the battery power supply device via a discharge control circuit.

[0007] During operation, the discharge control circuit is turned on, and the battery supplies power to the discharge module through the discharge control circuit;

[0008] In standby mode, the discharge control circuit is disconnected, and the battery stops discharging;

[0009] The discharge control circuit includes a third electronic switch Q3, a sixth electronic switch Q6, a third resistor R3, and a tenth resistor R10;

[0010] The first terminal of the third electronic switch Q3 is connected to the positive terminal of the battery, the second terminal of the third electronic switch Q3 is connected to the input terminal of the discharge module, and the third terminal of the third electronic switch Q3 is connected to the second terminal of the sixth electronic switch Q6.

[0011] The positive terminal of the battery is connected to the third terminal of the third electronic switch Q3 via the third resistor R3;

[0012] The first terminal of the sixth electronic switch Q6 is grounded; the third terminal of the sixth electronic switch Q6 is grounded through the tenth resistor R10; the third terminal of the sixth electronic switch Q6 is the fifth node; the fifth node is connected to the second control signal, which is used to control the discharge control circuit to be turned on or off.

[0013] The third terminal of the third electronic switch Q3 is the control terminal of the third electronic switch Q3, used to control the connection and disconnection between the first terminal and the second terminal of the third electronic switch Q3;

[0014] The third terminal of the sixth electronic switch Q6 is the control terminal of the sixth electronic switch Q6, used to control the connection and disconnection between the first terminal and the second terminal of the sixth electronic switch Q6.

[0015] In one possible implementation, the third electronic switch Q3 is a PMOS and the sixth electronic switch Q6 is an NMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

[0016] In one possible implementation, the zero-power circuit further includes a button triggering circuit, which includes a second resistor R2, a button K1, a fourth electronic switch Q4, a first diode D1, and a seventh resistor R7.

[0017] The positive terminal of the battery is connected to ground via the second resistor R2 and the button K1 in sequence; the connection point of the second resistor R2 and the button K1 is connected to the third terminal of the fourth electronic switch Q4; the first terminal of the fourth electronic switch Q4 is connected to the positive terminal of the battery, and the second terminal of the fourth electronic switch Q4 is connected to the fifth node via the first diode D1 and the resistor R7, for providing a second control signal to control the discharge control circuit to be turned on or off.

[0018] The third terminal of the fourth electronic switch Q4 is the control terminal of the fourth electronic switch Q4, used to control the connection and disconnection between the first terminal and the second terminal of the fourth electronic switch Q4.

[0019] In one possible implementation, the fourth electronic switch Q4 is a PMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

[0020] In one possible implementation, the standby zero-power circuit further includes a control module, a fifth resistor R5, and an eighth resistor R8; the second terminal of the fourth electronic switch Q4 is grounded sequentially via the fifth resistor R5 and the eighth resistor R8; the connection point of the fifth resistor R5 and the eighth resistor R8 is connected to the second input terminal of the control module.

[0021] In one possible implementation, the zero-power circuit further includes a signal triggering circuit, which includes a control module, a fourth diode D4, and a ninth resistor R9.

[0022] The second output terminal of the control module is connected to the fifth node via the fourth diode D4, and is used to provide a second control signal to control the discharge control circuit to be turned on or off.

[0023] The second output terminal of the control module is grounded via the ninth resistor R9.

[0024] In one possible implementation, the third electronic switch Q3 is connected to the power supply terminal of the low dropout linear regulator LDO via the second diode D2; the output terminal of the LDO is connected to the power supply terminal of the control module.

[0025] In one possible implementation, the standby zero-power circuit further includes a charging control circuit;

[0026] The power input terminal VIN is connected to the battery via the charging module and charging control circuit in the battery-powered device.

[0027] During charging, the charging control circuit is turned on, and the external power input terminal VIN charges the battery through the charging module and the charging control circuit.

[0028] When not charging, the charging control circuit is disconnected, ending the charging process and preventing the battery from discharging back into the charging module.

[0029] In one possible implementation, the charging control circuit includes: a first electronic switch Q1, a second electronic switch Q1, a fifth electronic switch Q5, a first resistor R1, a fourth resistor R4, and a sixth resistor R6;

[0030] The first terminal of the first electronic switch Q1 is connected to the first terminal of the second electronic switch Q2, and the connection point is the first node;

[0031] The second terminal of the first electronic switch Q1 is connected to the input terminal of the charging module, and the second terminal of the second electronic switch Q2 is connected to the positive terminal of the battery;

[0032] The third terminal of the first electronic switch Q1 is connected to the third terminal of the second electronic switch Q2, and the connection point is the second node;

[0033] The third terminal of the first electronic switch Q1 is the control terminal of the first electronic switch Q1, which is used to control the connection and disconnection between the first terminal and the second terminal of the first electronic switch Q1.

[0034] The third terminal of the second electronic switch Q2 is the control terminal of the second electronic switch Q2, which is used to control the connection and disconnection between the first terminal and the second terminal of the second electronic switch Q2;

[0035] The first resistor R1 is connected between the first node and the second node;

[0036] The third node is connected to the third terminal of the fifth electronic switch Q5 via the fourth resistor R4. The first terminal of the fifth electronic switch Q5 is grounded, and the third terminal of the fifth electronic switch Q5 is connected to the second node.

[0037] The third node is grounded via the sixth resistor R6;

[0038] The third node is connected to the first control signal, which is used to control the charging control circuit to be turned on or off.

[0039] In one possible implementation, the first electronic switch Q1 and the second electronic switch Q2 are PMOS, and the fifth electronic switch Q5 is NMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

[0040] In one possible implementation, the power input terminal VIN is connected to a third node via a fifth diode D5 to provide a first control signal to control the charging control circuit to be turned on or off.

[0041] In one possible implementation, the power input terminal VIN is grounded sequentially via the eleventh resistor R11 and the twelfth resistor R12; the connection point between the eleventh resistor R11 and the twelfth resistor R12 and grounded is the fourth node;

[0042] The fourth node is connected to the first input terminal of the control module, and the first output terminal of the control module is connected to the third node via the sixth diode D6 to provide a first control signal to control the charging control circuit to be turned on or off.

[0043] In one possible implementation, the power input terminal VIN is connected to the power supply terminal of a low dropout linear regulator (LDO) via a third diode D3; the output terminal of the LDO is connected to the power supply terminal of the control module.

[0044] Beneficial effects:

[0045] This application uses a discharge control circuit to stop the battery in the battery-powered device from discharging to the discharge module and LDO during standby. At the same time, it uses a charging control circuit to prevent the battery from discharging back to the charging module, thus stopping the battery from discharging. During standby, the battery is in a zero-power state, resulting in longer standby time, no over-discharge of the battery, and extended battery life. Attached Figure Description

[0046] Figure 1 This is a circuit diagram of one embodiment of this application. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0048] It should be noted that terms such as "first" and "second" in the specification, claims, and accompanying drawings of this application are used merely to distinguish one entity or operation from another, and do not necessarily require or imply a specific relationship or order between these entities or operations. It should be understood that the terms "first" and "second" do not limit the quantity or order of execution, and that "first" and "second" do not necessarily imply difference. It should be understood that such data used can be interchanged where appropriate. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements explicitly listed, but also other elements not explicitly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linked," and "socketing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] The following will refer to Figure 1 A specific implementation method according to this application is described.

[0051] like Figure 1 The present application discloses a standby zero-power circuit for use in battery-powered devices, including a discharge control circuit.

[0052] The battery is connected to the discharge module in the battery power supply device via a discharge control circuit.

[0053] During operation, the discharge control circuit is activated, and the battery supplies power to the discharge module via the discharge control circuit.

[0054] When in standby mode, the discharge control circuit is disconnected, and the battery stops discharging;

[0055] In some embodiments, the discharge control circuit includes a third electronic switch Q3, a sixth electronic switch Q6, a third resistor R3, and a tenth resistor R10;

[0056] The first terminal of the third electronic switch Q3 is connected to the positive terminal of the battery, the second terminal of the third electronic switch Q3 is connected to the input terminal of the discharge module, and the third terminal of the third electronic switch Q3 is connected to the second terminal of the sixth electronic switch Q6.

[0057] The positive terminal of the battery is connected to the third terminal of the third electronic switch Q3 via the third resistor R3;

[0058] The first terminal of the sixth electronic switch Q6 is grounded; the third terminal of the sixth electronic switch Q6 is grounded through the tenth resistor R10; the third terminal of the sixth electronic switch Q6 is the fifth node; the fifth node is connected to the second control signal, which is used to control the discharge control circuit to be turned on or off.

[0059] The third terminal of the third electronic switch Q3 is the control terminal of the third electronic switch Q3, used to control the connection and disconnection between the first terminal and the second terminal of the third electronic switch Q3;

[0060] The third terminal of the sixth electronic switch Q6 is the control terminal of the sixth electronic switch Q6, used to control the connection and disconnection between the first terminal and the second terminal of the sixth electronic switch Q6.

[0061] In some embodiments, the third electronic switch Q3 is a PMOS and the sixth electronic switch Q6 is an NMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

[0062] In some embodiments, the zero-power circuit further includes a button triggering circuit, which includes a second resistor R2, a button K1, a fourth electronic switch Q4, a first diode D1, and a seventh resistor R7.

[0063] The positive terminal of the battery is connected to ground via the second resistor R2 and the button K1 in sequence; the connection point of the second resistor R2 and the button K1 is connected to the third terminal of the fourth electronic switch Q4; the first terminal of the fourth electronic switch Q4 is connected to the positive terminal of the battery, and the second terminal of the fourth electronic switch Q4 is connected to the fifth node via the first diode D1 and the resistor R7, for providing a second control signal to control the discharge control circuit to be turned on or off.

[0064] The third terminal of the fourth electronic switch Q4 is the control terminal of the fourth electronic switch Q4, used to control the connection and disconnection between the first terminal and the second terminal of the fourth electronic switch Q4.

[0065] In some embodiments, the fourth electronic switch Q4 is a PMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

[0066] During operation (discharge), pressing button K1 triggers the gate of the fourth electronic switch Q4 to a low level, turning Q4 on. This, in turn, causes the gate of the sixth electronic switch Q6 to a high level via the first diode D1 and the seventh resistor R7, turning Q6 on. Consequently, the gate of the third electronic switch Q3 is pulled low, turning Q3 on and supplying power to the discharge module. After the discharge module is powered, the control module can output a control signal to control whether to discharge to the load.

[0067] In some embodiments, the standby zero-power circuit further includes a fifth resistor R5 and an eighth resistor R8; the second terminal of the fourth electronic switch Q4 is grounded via the fifth resistor R5 and the eighth resistor R8 in sequence; the connection point of the fifth resistor R5 and the eighth resistor R8 is connected to the second input terminal of the control module.

[0068] Therefore, when button K1 is pressed and released, the control module can detect the relevant actions of the button (such as single click, double click, multiple clicks and long press) through the fifth resistor R5 and the eighth resistor R8, and can make corresponding responses (detecting different actions such as single click, double click, multiple clicks and long press).

[0069] In some embodiments, the zero-power circuit further includes a signal triggering circuit, which includes a control module, a fourth diode D4, and a ninth resistor R9.

[0070] The second output terminal of the control module is connected to the fifth node via the fourth diode D4, and is used to provide a second control signal to control the discharge control circuit to be turned on or off.

[0071] The second output terminal of the control module is grounded via the ninth resistor R9.

[0072] During operation (discharging), the control module outputs a high level to Dis_Ctrl. When Dis_Ctrl is high, the fourth diode D4 causes the gate of the sixth electronic switch Q6 to go high, turning Q6 on. This, in turn, pulls the gate of the third electronic switch Q3 low, turning Q3 on and supplying power to the discharge module. After the discharge module is powered, the control module can output a control signal to control whether to discharge the load. In standby mode, the entire system is powered off, and Dis_Ctrl is grounded via resistor R9, resulting in a low level. When Dis_Ctrl is low, the fourth diode D4 causes the gate of the sixth electronic switch Q6 to go low, turning Q6 off. This, in turn, causes the gate of the third electronic switch Q3 to go high, turning Q3 off, and the battery stops discharging.

[0073] In some embodiments, the third electronic switch Q3 is connected to the power supply terminal of the low-dropout linear regulator (LDO) via the second diode D2; the output terminal of the LDO is connected to the power supply terminal of the control module. During discharge, the battery can supply power to the LDO via the third electronic switch Q3, and the LDO can output power to supply power to the control module.

[0074] In some embodiments, the standby zero-power circuit further includes a charging control circuit;

[0075] The power input terminal VIN is connected to the battery via the charging module and charging control circuit in the battery-powered device.

[0076] During charging, the charging control circuit is turned on, and the external power input terminal VIN charges the battery through the charging module and the charging control circuit.

[0077] When not charging, the charging control circuit is disconnected, ending the charging process and preventing the battery from discharging back into the charging module.

[0078] In some embodiments, the charging control circuit includes: a first electronic switch Q1, a second electronic switch Q1, a fifth electronic switch Q5, a first resistor R1, a fourth resistor R4, and a sixth resistor R6;

[0079] The first terminal of the first electronic switch Q1 is connected to the first terminal of the second electronic switch Q2, and the connection point is the first node;

[0080] The second terminal of the first electronic switch Q1 is connected to the input terminal of the charging module, and the second terminal of the second electronic switch Q2 is connected to the positive terminal of the battery;

[0081] The third terminal of the first electronic switch Q1 is connected to the third terminal of the second electronic switch Q2, and the connection point is the second node;

[0082] The third terminal of the first electronic switch Q1 is the control terminal of the first electronic switch Q1, which is used to control the connection and disconnection between the first terminal and the second terminal of the first electronic switch Q1.

[0083] The third terminal of the second electronic switch Q2 is the control terminal of the second electronic switch Q2, which is used to control the connection and disconnection between the first terminal and the second terminal of the second electronic switch Q2;

[0084] The first resistor R1 is connected between the first node and the second node;

[0085] The third node is connected to the third terminal of the fifth electronic switch Q5 via the fourth resistor R4. The first terminal of the fifth electronic switch Q5 is grounded, and the third terminal of the fifth electronic switch Q5 is connected to the second node.

[0086] The third node is grounded via the sixth resistor R6;

[0087] The third node is connected to the first control signal, which is used to control the charging control circuit to be turned on or off.

[0088] In some embodiments, the power input terminal VIN is connected to a third node via a fifth diode D5 to provide a first control signal to control the charging control circuit to be turned on or off.

[0089] In some embodiments, the first electronic switch Q1 and the second electronic switch Q2 are PMOS, and the fifth electronic switch Q5 is NMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate. When the power input terminal VIN is de-energized, the third node is pulled low by the sixth resistor R6, the fifth electronic switch Q5 is turned off, the gate and source potentials of the first electronic switches Q1 and Q1 are the same, the first electronic switches Q1 and Q1 are turned off, charging ends, and this also prevents the battery from discharging into the charging module in reverse.

[0090] During charging, the power input terminal VIN is energized. VIN turns on the fifth electronic switch Q5 through the fifth diode D5 and the fourth resistor R4. The gates of the first electronic switch Q1 and the second electronic switch Q1 are pulled low. The first electronic switch Q1 and the second electronic switch Q1 are turned on, thus enabling charging of the battery from VIN. When the power input terminal VIN is de-energized, the MCU outputs a low level, the fifth electronic switch Q5 is turned off, and the gate and source potentials of the first electronic switch Q1 and the second electronic switch Q1 are at the same level. The first electronic switch Q1 and the second electronic switch Q1 are turned off, and charging ends. This also prevents the battery from discharging back into the charging module.

[0091] In some embodiments, the standby zero-power circuit further includes a control module;

[0092] The power input terminal VIN is grounded sequentially via the eleventh resistor R11 and the twelfth resistor R12; the connection point between the eleventh resistor R11 and the twelfth resistor R12 is the fourth node;

[0093] The fourth node is connected to the first input terminal of the control module, and the first output terminal of the control module is connected to the third node via the sixth diode D6 to provide a first control signal to control the charging control circuit to be turned on or off.

[0094] During charging, when the power input terminal VIN is energized, the control module detects the VIN input through the eleventh resistor R11 and the twelfth resistor R12, and outputs a high level to turn on the fifth electronic switch Q5 through the sixth diode D6 and the fourth resistor R4. The gates of the first electronic switch Q1 and the second electronic switch Q1 are pulled low. The first electronic switch Q1 and the second electronic switch Q1 are turned on, thus realizing charging from VIN to the battery. When the power input terminal VIN is de-energized, the control module outputs a low level, the fifth electronic switch Q5 is turned off, the gate and source potentials of the first electronic switch Q1 and the second electronic switch Q1 are the same, the first electronic switch Q1 and the second electronic switch Q1 are turned off, the charging ends, and this also prevents the battery from discharging back into the charging module.

[0095] In some embodiments, the power input terminal VIN is connected to the power supply terminal of a low-dropout linear regulator (LDO) via a third diode D3; the output terminal of the LDO is connected to the power supply terminal of the control module. During charging, the power input terminal VIN can supply power to the LDO, and the LDO can output power to supply power to the control module.

[0096] In some embodiments, the control module is an MCU module.

[0097] In this application, the charging control circuit, the discharging control circuit, and the control module are the core circuits. The I / O ports of the control module are connected to the charging control circuit and the discharging control circuit, and can control each circuit.

[0098] The above description of the embodiments of this application is only a part of the embodiments of this application, and is used to enable those skilled in the art to implement or use the content of this application, and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A standby zero-power circuit for use in battery-powered devices, characterized in that, Includes discharge control circuitry; The battery is connected to the discharge module in the battery power supply device via a discharge control circuit. During operation, the discharge control circuit is turned on, and the battery supplies power to the discharge module through the discharge control circuit; In standby mode, the discharge control circuit is disconnected, and the battery stops discharging; The discharge control circuit includes a third electronic switch Q3, a sixth electronic switch Q6, a third resistor R3, and a tenth resistor R10; The first terminal of the third electronic switch Q3 is connected to the positive terminal of the battery, the second terminal of the third electronic switch Q3 is connected to the input terminal of the discharge module, and the third terminal of the third electronic switch Q3 is connected to the second terminal of the sixth electronic switch Q6. The positive terminal of the battery is connected to the third terminal of the third electronic switch Q3 via the third resistor R3; The first terminal of the sixth electronic switch Q6 is grounded; the third terminal of the sixth electronic switch Q6 is grounded through the tenth resistor R10; the third terminal of the sixth electronic switch Q6 is the fifth node; the fifth node is connected to the second control signal, which is used to control the discharge control circuit to be turned on or off. The third terminal of the third electronic switch Q3 is the control terminal of the third electronic switch Q3, used to control the connection and disconnection between the first terminal and the second terminal of the third electronic switch Q3; The third terminal of the sixth electronic switch Q6 is the control terminal of the sixth electronic switch Q6, used to control the connection and disconnection between the first terminal and the second terminal of the sixth electronic switch Q6.

2. The standby zero-power circuit according to claim 1, characterized in that, The third electronic switch Q3 is a PMOS and the sixth electronic switch Q6 is an NMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

3. The standby zero-power circuit according to claim 1, characterized in that, The zero-power circuit also includes a button triggering circuit, which includes a second resistor R2, a button K1, a fourth electronic switch Q4, a first diode D1, and a seventh resistor R7. The positive terminal of the battery is connected to ground via the second resistor R2 and the button K1 in sequence; the connection point of the second resistor R2 and the button K1 is connected to the third terminal of the fourth electronic switch Q4; the first terminal of the fourth electronic switch Q4 is connected to the positive terminal of the battery, and the second terminal of the fourth electronic switch Q4 is connected to the fifth node via the first diode D1 and the resistor R7, for providing a second control signal to control the discharge control circuit to be turned on or off. The third terminal of the fourth electronic switch Q4 is the control terminal of the fourth electronic switch Q4, used to control the connection and disconnection between the first terminal and the second terminal of the fourth electronic switch Q4.

4. The standby zero-power circuit according to claim 3, characterized in that, The fourth electronic switch Q4 is a PMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

5. The standby zero-power circuit according to claim 3, characterized in that, The standby zero-power circuit also includes a control module, a fifth resistor R5, and an eighth resistor R8; the second terminal of the fourth electronic switch Q4 is grounded via the fifth resistor R5 and the eighth resistor R8 in sequence; the connection point of the fifth resistor R5 and the eighth resistor R8 is connected to the second input terminal of the control module.

6. The standby zero-power circuit according to claim 1, characterized in that, The zero-power circuit also includes a signal triggering circuit, which includes a control module, a fourth diode D4, and a ninth resistor R9. The second output terminal of the control module is connected to the fifth node via the fourth diode D4, and is used to provide a second control signal to control the discharge control circuit to be turned on or off. The second output terminal of the control module is grounded via the ninth resistor R9.

7. The standby zero-power circuit according to claim 6, characterized in that, The third electronic switch Q3 is connected to the power supply terminal of the low dropout linear regulator LDO through the second diode D2; the output terminal of the LDO is connected to the power supply terminal of the control module.

8. The standby zero-power circuit according to any one of claims 1 to 7, characterized in that, The standby zero-power circuit also includes a charging control circuit; The power input terminal VIN is connected to the battery via the charging module and charging control circuit in the battery-powered device. During charging, the charging control circuit is turned on, and the external power input terminal VIN charges the battery through the charging module and the charging control circuit. When not charging, the charging control circuit is disconnected, ending the charging process and preventing the battery from discharging back into the charging module.

9. The standby zero-power circuit according to claim 8, characterized in that, The charging control circuit includes: a first electronic switch Q1, a second electronic switch Q1, a fifth electronic switch Q5, a first resistor R1, a fourth resistor R4, and a sixth resistor R6; The first end of the first electronic switch Q1 is connected to the first end of the second electronic switch Q2, and the connection point is the first node; The second terminal of the first electronic switch Q1 is connected to the input terminal of the charging module, and the second terminal of the second electronic switch Q2 is connected to the positive terminal of the battery; The third terminal of the first electronic switch Q1 is connected to the third terminal of the second electronic switch Q2, and the connection point is the second node; The third terminal of the first electronic switch Q1 is the control terminal of the first electronic switch Q1, which is used to control the connection and disconnection between the first terminal and the second terminal of the first electronic switch Q1. The third terminal of the second electronic switch Q2 is the control terminal of the second electronic switch Q2, which is used to control the connection and disconnection between the first terminal and the second terminal of the second electronic switch Q2; The first resistor R1 is connected between the first node and the second node; The third node is connected to the third terminal of the fifth electronic switch Q5 via the fourth resistor R4. The first terminal of the fifth electronic switch Q5 is grounded, and the third terminal of the fifth electronic switch Q5 is connected to the second node. The third node is grounded via the sixth resistor R6; The third node is connected to the first control signal, which is used to control the charging control circuit to be turned on or off.

10. The standby zero-power circuit according to claim 9, characterized in that, The first electronic switch Q1 and the second electronic switch Q2 are PMOS, and the fifth electronic switch Q5 is NMOS; the first terminal is the source, the second terminal is the drain, and the third terminal is the gate.

11. The standby zero-power circuit according to claim 9, characterized in that, The power input terminal VIN is connected to the third node via the fifth diode D5 to provide a first control signal to control the charging control circuit to be turned on or off.

12. The standby zero-power circuit according to claim 9, characterized in that, The power input terminal VIN is grounded sequentially via the eleventh resistor R11 and the twelfth resistor R12; the connection point between the eleventh resistor R11 and the twelfth resistor R12 is the fourth node; The fourth node is connected to the first input terminal of the control module, and the first output terminal of the control module is connected to the third node via the sixth diode D6 to provide a first control signal to control the charging control circuit to be turned on or off.

13. The standby zero-power circuit according to claim 9, characterized in that, The power input terminal VIN is connected to the power supply terminal of the low dropout linear regulator LDO via the third diode D3; the output terminal of the LDO is connected to the power supply terminal of the control module.

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