Auxiliary circuit generation method and system based on zero-power standby charger

Abstract

The present invention relates to the technical field of low power consumption of chargers, and discloses a method for generating an auxiliary circuit based on a zero-power standby charger, including: detecting whether the output interface of the charger is connected to a device to be charged, notifying the control module of the charging state of the output interface by using a protocol module, feeding back the charging state from the control module to a feedback loop module, and activating a PWM control module by using the feedback loop module; performing switch processing on a DC-DC module switch and a protocol module switch by using a control module, and supplying energy to the DC-DC module and the protocol module during charging by using an activation module during charging; when the output interface of the charger is not connected to the device to be charged, activating the PWM control module by using a feedback loop module; performing switch processing on a DC-DC module switch and a protocol module switch by using a control module, and supplying energy to the DC-DC module and the protocol module during standby by using an activation module during standby and a power supply module. The present invention can save power consumption of the charger during standby.

Description

Technical Field

[0001] The invention relates to a method and system for generating an auxiliary circuit based on a zero-power standby charger, belonging to the technical field of low power consumption of chargers. Background Art

[0002] As smartphones, computers, and devices using Type-C, USB-A, and other interface devices play an increasingly important role in work and life, charger products with multiple output interfaces are increasingly chosen by consumers. Even though the use of many new technologies has improved the conversion efficiency of charging devices, electronic devices are often in a standby state without charging, and their standby power consumption can reach up to 300mW. Due to the long standby period, the total power consumption is not small.

[0003] Power consumption <5mw means zero standby. How to reduce this part of loss to achieve zero power standby is a topic that is gaining more and more attention. Summary of the invention

[0004] The present invention provides a method and system for generating an auxiliary circuit based on a zero-power standby charger, and a computer-readable storage medium, the main purpose of which is to save the power consumption of the charger when it is in standby mode.

[0005] To achieve the above object, the present invention provides a method for generating an auxiliary circuit based on a zero-power standby charger, comprising:

[0006] Detect whether the output interface of the charger is connected to the device to be charged, wherein the charger includes a PWM control module, a feedback loop module, a power supply module, a control module, a DC-DC module, a protocol module, a DC-DC module switch and a protocol module switch;

[0007] When the output interface of the charger is connected to the device to be charged, the charging state of the output interface is notified to the control module by using the protocol module, the charging state is fed back from the control module to the feedback loop module, and based on the charging state, the PWM control module is activated by using the feedback loop module to obtain a charging activation module;

[0008] Based on the charging state, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switch result during charging, and according to the switch result during charging, the activation module during charging is used to perform energy supply during charging on the DC-DC module and the protocol module to obtain an energy supply result during charging;

[0009] When the output interface of the charger is not connected to the device to be charged, the protocol module is used to notify the control module of the standby state of the output interface, the standby state is fed back from the control module to the feedback loop module, and based on the standby state, the feedback loop module is used to activate the PWM control module to obtain a standby activation module;

[0010] The control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result, and according to the standby switch result and the charging energy supply result, the standby activation module and the power supply module are used to perform standby energy supply on the DC-DC module and the protocol module to obtain a standby energy supply result;

[0011] The energy supply result in standby mode is used to complete the generation of the zero-power standby circuit of the charger, and the generation result of the zero-power standby circuit of the charger is obtained.

[0012] Optionally, the step of detecting whether the output interface of the charger is connected to the device to be charged includes:

[0013] Obtaining pull-down resistances between pins in the charger;

[0014] Using the hub in the charger to determine whether the differential data line in the charger changes from a low level to a high level;

[0015] When the differential data line in the charger changes from a low level to a high level, determining that the pin changes from a low level to a high level under the action of the pull-down resistor;

[0016] When the pin is changed from a low level to a high level under the action of the pull-down resistor, it is determined that the output interface of the charger is connected to the device to be charged;

[0017] When the differential data line in the charger does not change from a low level to a high level, determining that the pin maintains a low level under the action of the pull-down resistor;

[0018] When the pin maintains a low level under the action of the pull-down resistor, it is determined that the output interface of the charger is not connected to the device to be charged.

[0019] Optionally, the using the protocol module to notify the control module of the charging state of the output interface includes:

[0020] Identify the high level pin of the output interface;

[0021] Using the protocol module to collect the pin voltage and pin current of the high-level pin;

[0022] Calculate the load end power of the output interface by using the pin voltage and the pin current;

[0023] Comparing the load end power with a preset power threshold to obtain a power comparison result;

[0024] When the power comparison result is that the load end power is greater than a preset power threshold, taking the load end power as the charging state of the output interface;

[0025] Acquire a DC-DC module in the charger; and collect a DC voltage and a DC current of the DC-DC module using the protocol module;

[0026] Calculating the DC power of the DC-DC module by using the DC voltage and the DC current;

[0027] The load-end power and the DC power are transmitted to the control module to complete the process of notifying the control module of the charging status of the output interface.

[0028] Optionally, the feeding back the charging state from the control module to the feedback loop module comprises:

[0029] Obtaining a protocol module, a voltage-stabilizing charging module, and a power supply module in the charger;

[0030] Using the control module to respectively detect the protocol power of the protocol module and the power supply power of the power supply module;

[0031] Calculating the voltage stabilization power of the voltage stabilization charging module by using the power supply module;

[0032] transmitting the regulated power from the power supply module to the control module;

[0033] detecting the control power of the control module;

[0034] The charging state, DC power, the protocol power, the supply power, the regulated power and the control power of the control module in the control module are transmitted to the feedback loop module to complete the process of feeding back the charging state from the control module to the feedback loop module.

[0035] Optionally, based on the charging state, the PWM control module is activated by using the feedback loop module to obtain a charging activation module, including:

[0036] Obtaining the DC power, protocol power, power supply power, voltage regulation power and control power of the control module in the feedback loop module;

[0037] Using the PWM control module to identify the feedback power of the feedback loop module;

[0038] The power of the first output end of the charger is calculated using the following formula according to the charging state, DC power, protocol power, power supply power, voltage stabilization power, control power of the control module and the feedback power:

[0039] ;

[0040] in, represents the power of the first output terminal, Indicates the charging status. Indicates DC power, Indicates the protocol power. Indicates the control power, is the feedback power, Indicates the power supply. Indicates the regulated power;

[0041] Using the PWM control module to identify the input power of the charger;

[0042] The second output power corresponding to the input power is calculated using the following formula:

[0043] ;

[0044] in, represents the second output power, represents the power conversion efficiency of the transformer in the charger, Indicates the input power;

[0045] When the power of the first output end is greater than the power of the second output end, the PWM control module is turned on to obtain a charging activation module.

[0046] Optionally, based on the charging state, using the control module to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switch result during charging includes:

[0047] Acquire an input switch and an output switch in the DC-DC module switch and a protocol module in the charger;

[0048] Based on the charging state, using the control module to turn on the input switch, thereby turning on the input switch;

[0049] Based on the charging state, using the control module to control the protocol module to perform an opening process on the output switch, thereby opening the output switch;

[0050] Based on the charging state, using the control module to shut down the protocol module switch, thereby shutting down the protocol module switch;

[0051] The turning on of the input switch, the turning on of the output switch and the turning off of the protocol module switch are taken as the switching result during charging.

[0052] Optionally, the step of supplying energy to the DC-DC module and the protocol module during charging by the activation module during charging according to the switching result during charging to obtain the energy supply result during charging includes:

[0053] After the switching result during charging is fed back to the activation module during charging, the high level duty cycle during charging of the activation module during charging is calculated using the following formula:

[0054] ;

[0055] ;

[0056] ;

[0057] ;

[0058] ;

[0059] in, Indicates the high level duty cycle during charging, Indicates the input voltage of the charger. Indicates the voltage value of the high level, represents the power of the first output terminal, Indicates the number of coil turns at the charger input end. Indicates the number of coil turns at the charger’s output end. Indicates the output voltage of the charger. Indicates the output current of the charger, Indicates the total resistance of the charger’s output terminal;

[0060] Adjusting the current duty cycle in the charging activation module to the charging high level duty cycle to obtain an adjusted duty cycle;

[0061] When the power supply module in the charger is powered by the first module by adjusting the duty cycle, the DC-DC module in the charger is powered by the second module by adjusting the duty cycle to obtain a second power supply result;

[0062] Performing a third module energy supply on the protocol module according to the second energy supply result to obtain a third energy supply result;

[0063] The second energy supply result and the third energy supply result are used as energy supply results during charging.

[0064] Optionally, the using the control module to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result includes:

[0065] Using the control module to turn on the DC-DC module switch, thereby turning on the DC-DC module switch;

[0066] Using the control module to shut down the protocol module switch, thereby shutting down the protocol module switch;

[0067] The switching on of the DC-DC module and the switching off of the protocol module are used as the switching result in standby mode.

[0068] Optionally, the step of supplying energy to the DC-DC module and the protocol module during standby by using the standby activation module and the power supply module according to the standby switch result and the charging energy supply result to obtain the standby energy supply result includes:

[0069] Obtaining the voltage stabilization power of the voltage stabilization charging module in the charger;

[0070] Based on the regulated power, the standby high level duty cycle of the standby activation module is calculated using the following formula:

[0071] ;

[0072] ;

[0073] ;

[0074] ;

[0075] ;

[0076] in, Indicates the high level duty cycle in standby mode. Indicates the input voltage of the charger. Indicates the voltage value of the high level, Indicates the number of coil turns at the charger input end. Indicates the number of coil turns at the charger’s output end. Indicates the output voltage of the charger. Indicates the regulated power, Indicates the total resistance value of the voltage stabilizing charging module;

[0077] After adjusting the high-level duty cycle of the charging in the standby activation module to the high-level duty cycle of the standby, the voltage-stabilized charging module is stabilized and supplied with energy by using the high-level duty cycle of the standby to obtain a voltage-stabilized energy supply result;

[0078] The power supply module is powered and supplied with energy according to the voltage-stabilized power supply result to obtain a power supply result;

[0079] The DC-DC module and the protocol module are powered in standby mode using the power supply result to obtain a standby power supply result.

[0080] In order to solve the above problems, the present invention also provides an auxiliary circuit generation system based on a zero-power standby charger, the system comprising:

[0081] An interface detection module, used to detect whether the output interface of the charger is connected to the device to be charged, wherein the charger includes a PWM control module, a feedback loop module, a power supply module, a control module, a DC-DC module, a protocol module, a DC-DC module switch and a protocol module switch;

[0082] a first activation module, configured to, when the output interface of the charger is connected to a device to be charged, notify the control module of the charging state of the output interface by using the protocol module, feed back the charging state from the control module to the feedback loop module, and activate the PWM control module by using the feedback loop module based on the charging state, thereby obtaining a charging activation module;

[0083] A charging energy supply module, configured to perform switch processing on the DC-DC module switch and the protocol module switch by using the control module based on the charging state to obtain a switch result during charging, and to perform charging energy supply on the DC-DC module and the protocol module by using the charging activation module according to the switch result during charging to obtain a charge energy supply result;

[0084] a second activation module, configured to, when the output interface of the charger is not connected to the device to be charged, notify the control module of the standby state of the output interface by using the protocol module, feed back the standby state from the control module to the feedback loop module, and activate the PWM control module by using the feedback loop module based on the standby state, so as to obtain a standby activation module;

[0085] A standby energy supply module, used to use the control module to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result, and according to the standby switch result and the charging energy supply result, perform standby energy supply on the DC-DC module and the protocol module through the standby activation module and the power supply module to obtain a standby energy supply result;

[0086] The circuit generation module is used to complete the zero-power standby circuit generation of the charger by using the energy supply result during standby, and obtain the zero-power standby circuit generation result of the charger.

[0087] In order to solve the above problem, the present invention further provides an electronic device, the electronic device comprising:

[0088] at least one processor; and,

[0089] a memory communicatively connected to the at least one processor; wherein,

[0090] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to implement the auxiliary circuit generation method based on the zero-power standby charger described above.

[0091] In order to solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned auxiliary circuit generation method based on a zero-power standby charger.

[0092] Compared with the problems described in the background technology, the embodiment of the present invention detects whether the output interface of the charger is connected to the device to be charged, so as to timely mobilize the power of the power supply end of the charger to charge the power supply module inside the charger when the device to be charged is connected. The embodiment of the present invention notifies the control module of the charging state of the output interface by using the protocol module, so as to transmit the power usage of the DC-DC module to the control module while notifying the control module of the charging state of the output interface by using the protocol module. Further, the embodiment of the present invention feeds back the charging state from the control module to the feedback loop module, so as to collect the power usage of the protocol module through the control module. Further, the embodiment of the present invention activates the PWM control module by using the feedback loop module based on the charging state to obtain the activation module during charging, so as to count the total power of the output end of the charger. The embodiment of the present invention performs switch processing on the DC-DC module switch and the protocol module switch by using the control module based on the charging state, so as to command Q2 to close. At this time, the DC-DC module is provided with energy by C2, and the protocol module is provided with energy by the DC-DC module. Q3 and Q4 are disconnected to avoid The energy of the DC-DC module is prevented from flowing back to the power supply module to cause anomalies. Furthermore, according to the switching result during charging, the embodiment of the present invention uses the activation module during charging to supply energy to the DC-DC module and the protocol module during charging, so as to supply energy to the power supply module, and ensure that when C2 does not supply energy to the DC-DC module and the protocol module in the future, the power supply module supplies energy to the DC-DC module and the protocol module. The embodiment of the present invention uses the control module to switch the DC-DC module switch and the protocol module switch, so that the energy of C2 is insufficient to complete the supply to D The power supply demand of the C-DC module and the protocol module, at this time, the power supply module completes the energy supply to the protocol module and the DC-DC module, the control module M3 and executes the command Q2 to turn off, Q3 and Q4 to close, and the energy of the protocol module and the DC-DC module is completed by the power supply module M2. Furthermore, the embodiment of the present invention supplies energy to the DC-DC module and the protocol module during standby through the standby activation module and the power supply module according to the standby switch result and the charging energy supply result, so as to realize zero-power supply to the DC-DC module and the protocol module through the power supply module. Therefore, the auxiliary circuit generation method based on the zero-power standby charger proposed in the present invention can save the power consumption of the charger during standby. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] Figure 1 A schematic flow chart of a method for generating an auxiliary circuit based on a zero-power standby charger provided by an embodiment of the present invention;

[0094] Figure 2 A zero-power circuit generation diagram of an auxiliary circuit generation method based on a zero-power standby charger provided by an embodiment of the present invention;

[0095] Figure 3 A schematic structural diagram of an electronic device for implementing the auxiliary circuit generation method based on a zero-power standby charger provided by an embodiment of the present invention.

[0096] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0097] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0098] The embodiment of the present application provides a method for generating an auxiliary circuit based on a zero-power standby charger. The execution subject of the method for generating an auxiliary circuit based on a zero-power standby charger includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided by the embodiment of the present application. In other words, the method for generating an auxiliary circuit based on a zero-power standby charger can be executed by software or hardware installed on a terminal device or a server device. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0099] Embodiment 1:

[0100] Reference Figure 1 FIG. 1 is a flow chart of a method for generating an auxiliary circuit based on a zero-power standby charger according to an embodiment of the present invention. In this embodiment, the method for generating an auxiliary circuit based on a zero-power standby charger includes:

[0101] S1. Detect whether the output interface of the charger is connected to the device to be charged, wherein the charger includes a PWM control module, a feedback loop module, a power supply module, a control module, a DC-DC module, a protocol module, a DC-DC module switch and a protocol module switch.

[0102] See also Figure 2 As shown, it is a zero-power circuit generation diagram of an auxiliary circuit generation method based on a zero-power standby charger provided by an embodiment of the present invention. Figure 2 In the figure, L represents the positive pole of the power supply, N represents the negative pole of the power supply, F1 represents the rectifier bridge, C1 and C2 represent capacitors, GND represents the grounding end of the wire, Q1~7 represent transistors, T1A represents a fuse, 2 and 3 represent the input end of the transformer, A and B represent the output end of the transformer, D1 represents a diode, R1~2 represent resistors, and ZD1 represents a Zener diode.

[0103] Furthermore, the embodiment of the present invention detects whether the output interface of the charger is connected to the device to be charged, so as to timely mobilize the power of the power supply end of the charger to charge the power supply module inside the charger when the device to be charged is connected.

[0104] Among them, the output interface refers to the interface into which the device to be charged is inserted, and the device to be charged refers to a mobile phone, tablet or other device waiting to be charged.

[0105] In one embodiment of the present invention, the detection of whether the output interface of the charger is connected to the device to be charged includes: obtaining the pins in the charger and the pull-down resistors of the pins; using the hub in the charger to determine whether the differential data lines in the charger are changed from a low level to a high level; when the differential data lines in the charger are changed from a low level to a high level, determining that the pins are changed from a low level to a high level under the action of the pull-down resistor; when the pins are changed from a low level to a high level under the action of the pull-down resistor, determining that the output interface of the charger is connected to the device to be charged; when the differential data lines in the charger are not changed from a low level to a high level, determining that the pins are kept at a low level under the action of the pull-down resistor; when the pins are kept at a low level under the action of the pull-down resistor, determining that the output interface of the charger is not connected to the device to be charged.

[0106] Among them, the pins refer to the D+ pin and the D- pin on the output interface, the D+ pin is used to output a high voltage, and the D- pin is used to output a low voltage. The pull-down resistor refers to an ohmic resistor connected to the D+ pin or the D- pin. Under the action of the pull-down resistor, the D+ pin or the D- pin will be in a low level state. The hub in the charger refers to a device with multiple connection ports, which can connect multiple devices to a charger for charging. The differential data line refers to a data line for transmitting digital signals. It should be noted that when the output interface is connected to the device to be charged, the level of the pin will change due to the action of the pull-up resistor inside the device to be charged and the pull-down resistor on the pin, and this change is reflected through the differential data line.

[0107] S2. When the output interface of the charger is connected to the device to be charged, the protocol module is used to notify the control module of the charging status of the output interface, the charging status is fed back from the control module to the feedback loop module, and based on the charging status, the feedback loop module is used to activate the PWM control module to obtain a charging activation module.

[0108] The embodiment of the present invention notifies the control module of the charging status of the output interface by using the protocol module, so that the power usage of the DC-DC module is also transmitted to the control module while notifying the control module of the charging status of the output interface by using the protocol module.

[0109] The protocol module includes a data acquisition unit, an operator, a comparator and a voltage and current detection instrument, and the DC-DC module refers to a DC-DC converter.

[0110] In one embodiment of the present invention, the method of notifying the control module of the charging status of the output interface by using the protocol module includes: identifying the high-level pin of the output interface; collecting the pin voltage and pin current of the high-level pin by using the protocol module; calculating the load-end power of the output interface by using the pin voltage and the pin current; comparing the load-end power with a preset power threshold to obtain a power comparison result; when the power comparison result is that the load-end power is greater than the preset power threshold, using the load-end power as the charging status of the output interface; obtaining a DC-DC module in the charger; collecting the DC voltage and DC current of the DC-DC module by using the protocol module; calculating the DC power of the DC-DC module by using the DC voltage and the DC current; transmitting the load-end power and the DC power to the control module to complete the process of notifying the control module of the charging status of the output interface.

[0111] Among them, the high-level pin refers to a pin that is converted from a low level to a high level, the pin voltage refers to the rated voltage of the pin, the pin current refers to the rated current of the pin, the load-end power refers to the required power of the device to be charged, and the power threshold refers to the load-end power when the device to be charged is not connected.

[0112] Optionally, the process of using the protocol module to collect the pin voltage and pin current of the high-level pin is implemented by a data collector, the process of calculating the load-end power of the output interface through the pin voltage and the pin current is implemented by an operator, the process of comparing the load-end power with a preset power threshold is implemented by a comparator, the process of using the protocol module to collect the DC voltage and DC current of the DC-DC module is implemented by a voltage and current detection instrument, and the process of calculating the DC power of the DC-DC module through the DC voltage and the DC current is implemented by an operator. It should be noted that power is the product of voltage and current.

[0113] Furthermore, in the embodiment of the present invention, the charging state is fed back from the control module to the feedback loop module, so as to collect the power usage of the protocol module through the control module.

[0114] Wherein, the control module includes an operator and a voltage and current detection instrument, and the power supply module includes an operator and a voltage and current detection instrument.

[0115] In one embodiment of the present invention, the process of feeding back the charging state from the control module to the feedback loop module includes: acquiring a protocol module, a voltage-stabilizing charging module and a power supply module in the charger; using the control module to respectively detect the protocol power of the protocol module and the power supply power of the power supply module; using the power supply module to calculate the voltage-stabilizing power of the voltage-stabilizing charging module; transmitting the voltage-stabilizing power from the power supply module to the control module; detecting the control power of the control module; transmitting the charging state, DC power, the protocol power, the power supply power, the voltage-stabilizing power and the control power of the control module in the control module to the feedback loop module, so as to complete the process of feeding back the charging state from the control module to the feedback loop module.

[0116] Optionally, the control module is used to respectively detect the protocol power of the protocol module and the power supply power of the power supply module; the process of using the power supply module to calculate the voltage stabilizing power of the voltage stabilizing charging module is realized through an operator and a voltage and current detection instrument.

[0117] Furthermore, the embodiment of the present invention activates the PWM control module using the feedback loop module based on the charging state, thereby obtaining a charging activation module for counting the total power of the output end of the charger.

[0118] The PWM control module includes a calculator, a voltage and current detector and a PWM regulator.

[0119] In one embodiment of the present invention, based on the charging state, the PWM control module is activated by the feedback loop module to obtain the activation module during charging, including: obtaining the DC power, protocol power, power supply power, voltage regulation power and control power of the control module in the feedback loop module; using the PWM control module to identify the feedback power of the feedback loop module; according to the charging state, DC power, protocol power, power supply power, voltage regulation power and control power of the control module and the feedback power, using the following formula to calculate the power of the first output end of the charger:

[0120] ;

[0121] in, represents the power of the first output terminal, Indicates the charging status. Indicates DC power, Indicates the protocol power. Indicates the control power, is the feedback power, Indicates the power supply. Indicates the regulated power;

[0122] The PWM control module is used to identify the input power of the charger; and the second output power corresponding to the input power is calculated using the following formula:

[0123] ;

[0124] in, represents the second output power, represents the power conversion efficiency of the transformer in the charger, Indicates the input power;

[0125] When the power of the first output end is greater than the power of the second output end, the PWM control module is turned on to obtain a charging activation module.

[0126] The input power is Figure 2 The power received between 2 and 3.

[0127] S3. Based on the charging state, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switching result during charging, and according to the switching result during charging, the charging activation module is used to supply energy to the DC-DC module and the protocol module during charging to obtain an energy supply result during charging.

[0128] In the embodiment of the present invention, based on the charging state, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to command Q2 to close. At this time, the DC-DC module is provided with energy by C2, the protocol module is provided with energy by the DC-DC module, and Q3 and Q4 are disconnected to prevent the energy of the DC-DC module from flowing back to the power supply module and causing abnormality.

[0129] In one embodiment of the present invention, based on the charging state, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switch result during charging, including: obtaining an input switch, an output switch in the DC-DC module switch and a protocol module in the charger; based on the charging state, the control module is used to perform an opening process on the input switch to obtain an opened input switch; based on the charging state, the control module is used to control the protocol module to perform an opening process on the output switch to obtain an opened output switch; based on the charging state, the control module is used to perform a closing process on the protocol module switch to obtain a closed protocol module switch; and the opened input switch, the opened output switch and the closed protocol module switch are used as the switch result during charging.

[0130] The input switch is Figure 2 The Q2 in the figure, the output switches refer to Q5 and Q6, and the protocol module switches refer to Q3 and Q4.

[0131] Furthermore, the embodiment of the present invention supplies energy to the DC-DC module and the protocol module during charging through the charging activation module according to the switching result during charging, so as to supply energy to the power supply module, thereby ensuring that when C2 does not supply energy to the DC-DC module and the protocol module subsequently, the power supply module supplies energy to the DC-DC module and the protocol module.

[0132] In one embodiment of the present invention, the charging-time energy supply is performed on the DC-DC module and the protocol module by the charging-time activation module according to the charging-time switch result to obtain the charging-time energy supply result, including: after feeding back the charging-time switch result to the charging-time activation module, the charging-time high level duty cycle of the charging-time activation module is calculated by using the following formula:

[0133] ;

[0134] ;

[0135] ;

[0136] ;

[0137] ;

[0138] in, Indicates the high level duty cycle during charging, Indicates the input voltage of the charger. Indicates the voltage value of the high level, represents the power of the first output terminal, Indicates the number of coil turns at the charger input end. Indicates the number of coil turns at the charger’s output end. Indicates the output voltage of the charger. Indicates the output current of the charger, Indicates the total resistance of the charger’s output terminal;

[0139] The current duty cycle in the activation module during charging is adjusted to the high-level duty cycle during charging to obtain an adjusted duty cycle; when the power supply module in the charger is powered by the adjusted duty cycle, the DC-DC module in the charger is powered by the adjusted duty cycle to obtain a second power supply result; the protocol module is powered by the second power supply result to obtain a third power supply result; the second power supply result and the third power supply result are used as the power supply result during charging.

[0140] Optionally, when the power supply module in the charger is powered by the first module by adjusting the duty cycle, the DC-DC module in the charger is powered by the second module by adjusting the duty cycle to obtain a second power supply result; the protocol module is powered by the second energy supply result to obtain a third power supply result. The process refers to adjusting the high-level duty cycle of the input voltage of the transformer and then energizing the power supply module, the DC-DC module, and the protocol module through the voltage output by the output terminal of the transformer.

[0141] S4. When the output interface of the charger is not connected to the device to be charged, the protocol module is used to notify the control module of the standby state of the output interface, the standby state is fed back from the control module to the feedback loop module, and based on the standby state, the feedback loop module is used to activate the PWM control module to obtain a standby activation module.

[0142] In the embodiment of the present invention, the standby state is 0 by default.

[0143] Optionally, the protocol module is used to notify the control module of the standby state of the output interface, the standby state is fed back from the control module to the feedback loop module, and based on the standby state, the feedback loop module is used to activate the PWM control module. The process of activating the module in standby state refers to the process of transferring the standby state from the output interface to the PWM control module and turning on the PWM control module.

[0144] S5. Use the control module to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result, and according to the standby switch result and the charging energy supply result, perform standby energy supply on the DC-DC module and the protocol module through the standby activation module and the power supply module to obtain a standby energy supply result.

[0145] In the embodiment of the present invention, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch, so that the energy of C2 is insufficient to meet the power supply requirements of the DC-DC module and the protocol module. At this time, the power supply module completes the energy supply to the protocol module and the DC-DC module, and the control module M3 executes the command Q2 to turn off, Q3 and Q4 to turn on, and the energy of the protocol module and the DC-DC module is supplied by the power supply module M2.

[0146] In one embodiment of the present invention, the use of the control module to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switch result in standby mode includes: using the control module to perform an opening process on the DC-DC module switch to obtain an opening DC-DC module switch; using the control module to perform a closing process on the protocol module switch to obtain a closing protocol module switch; and using the opening DC-DC module switch and the closing protocol module switch as the switch result in standby mode.

[0147] Furthermore, the embodiment of the present invention supplies energy to the DC-DC module and the protocol module in standby mode through the standby activation module and the power supply module according to the standby switch result and the charging energy supply result, so as to achieve zero power consumption power supply to the DC-DC module and the protocol module through the power supply module.

[0148] In one embodiment of the present invention, according to the switch result during standby and the energy supply result during charging, the DC-DC module and the protocol module are supplied with energy during standby by the standby activation module and the power supply module to obtain the energy supply result during standby, including: obtaining the regulated power of the voltage regulated charging module in the charger; based on the regulated power, calculating the high level duty cycle of the standby activation module during standby by using the following formula:

[0149] ;

[0150] ;

[0151] ;

[0152] ;

[0153] ;

[0154] in, Indicates the high level duty cycle in standby mode. Indicates the input voltage of the charger. Indicates the voltage value of the high level, Indicates the number of coil turns at the charger input end. Indicates the number of coil turns at the charger’s output end. Indicates the output voltage of the charger. Indicates the regulated power, Indicates the total resistance value of the voltage stabilizing charging module;

[0155] After adjusting the high-level duty cycle of charging in the standby activation module to the high-level duty cycle of standby, the voltage-stabilized charging module is stabilized and powered by the high-level duty cycle of standby to obtain a stabilized voltage and power supply result; the power supply module is powered and powered by the stabilized voltage and power supply result to obtain a power supply and power supply result; the DC-DC module and the protocol module are powered and powered by the power supply result to obtain a standby power supply result.

[0156] It should be noted that Refers to zero standby power consumption.

[0157] S6. Complete the generation of the zero-power standby circuit of the charger by using the energy supply result during standby mode, and obtain the generation result of the zero-power standby circuit of the charger.

[0158] Optionally, the process of using the energy supply result in standby mode to complete the generation of the zero-power standby circuit of the charger and obtaining the generation result of the zero-power standby circuit of the charger refers to: Figure 2 With regard to the above Figure 2 The zero power consumption operation process is generated as a result of the zero power standby circuit.

[0159] Compared with the problems described in the background technology, the embodiment of the present invention detects whether the output interface of the charger is connected to the device to be charged, so as to timely mobilize the power of the power supply end of the charger to charge the power supply module inside the charger when the device to be charged is connected. The embodiment of the present invention notifies the control module of the charging state of the output interface by using the protocol module, so as to transmit the power usage of the DC-DC module to the control module while notifying the control module of the charging state of the output interface by using the protocol module. Further, the embodiment of the present invention feeds back the charging state from the control module to the feedback loop module, so as to collect the power usage of the protocol module through the control module. Further, the embodiment of the present invention activates the PWM control module by using the feedback loop module based on the charging state to obtain the activation module during charging, so as to count the total power of the output end of the charger. The embodiment of the present invention performs switch processing on the DC-DC module switch and the protocol module switch by using the control module based on the charging state, so as to command Q2 to close. At this time, the DC-DC module is provided with energy by C2, and the protocol module is provided with energy by the DC-DC module. Q3 and Q4 are disconnected to avoid The energy of the DC-DC module is prevented from flowing back to the power supply module to cause anomalies. Furthermore, according to the switching result during charging, the embodiment of the present invention uses the activation module during charging to supply energy to the DC-DC module and the protocol module during charging, so as to supply energy to the power supply module, and ensure that when C2 does not supply energy to the DC-DC module and the protocol module in the future, the power supply module supplies energy to the DC-DC module and the protocol module. The embodiment of the present invention uses the control module to switch the DC-DC module switch and the protocol module switch, so that the energy of C2 is insufficient to complete the supply to D The power supply demand of the C-DC module and the protocol module, at this time, the power supply module completes the energy supply to the protocol module and the DC-DC module, the control module M3 and executes the command Q2 to turn off, Q3 and Q4 to close, and the energy of the protocol module and the DC-DC module is completed by the power supply module M2. Furthermore, the embodiment of the present invention supplies energy to the DC-DC module and the protocol module during standby through the standby activation module and the power supply module according to the standby switch result and the charging energy supply result, so as to realize zero-power supply to the DC-DC module and the protocol module through the power supply module. Therefore, the auxiliary circuit generation method based on the zero-power standby charger proposed in the present invention can save the power consumption of the charger during standby.

[0160] Embodiment 2:

[0161] like Figure 3, is a schematic diagram of the structure of an electronic device for implementing a method for generating an auxiliary circuit based on a zero-power standby charger provided by an embodiment of the present invention.

[0162] The electronic device 1 may include a processor 10, a memory 11, a bus 12 and a communication interface 13, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as an auxiliary circuit generation program based on a zero-power standby charger.

[0163] Among them, the memory 11 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 1, such as a mobile hard disk of the electronic device 1. In other embodiments, the memory 11 can also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), etc. equipped on the electronic device 1. Further, the memory 11 can also include both an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the auxiliary circuit generation program based on the zero-power standby charger, but also can be used to temporarily store data that has been output or is to be output.

[0164] In some embodiments, the processor 10 may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes or executes programs or modules stored in the memory 11 (for example, an auxiliary circuit generation program based on a zero-power standby charger, etc.), and calls data stored in the memory 11 to execute various functions of the electronic device 1 and process data.

[0165] The bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The bus is configured to realize connection and communication between the memory 11 and at least one processor 10, etc.

[0166] Figure 3 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0167] For example, although not shown, the electronic device 1 may also include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the at least one processor 10 through a power management device, so that the power management device can realize functions such as charging management, discharging management, and power management. The power source may also include any components such as one or more DC or AC power sources, recharging devices, power failure detection circuits, power converters or inverters, and power status indicators. The electronic device 1 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be described in detail here.

[0168] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0169] Optionally, the electronic device 1 may further include a user interface, which may be a display (Display), an input unit (such as a keyboard (Keyboard)), and optionally, the user interface may also be a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device, etc. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0170] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0171] The auxiliary circuit generation program based on the zero-power standby charger stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve:

[0172] Detect whether the output interface of the charger is connected to the device to be charged, wherein the charger includes a PWM control module, a feedback loop module, a power supply module, a control module, a DC-DC module, a protocol module, a DC-DC module switch and a protocol module switch;

[0173] When the output interface of the charger is connected to the device to be charged, the charging state of the output interface is notified to the control module by using the protocol module, the charging state is fed back from the control module to the feedback loop module, and based on the charging state, the PWM control module is activated by using the feedback loop module to obtain a charging activation module;

[0174] Based on the charging state, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switch result during charging, and according to the switch result during charging, the activation module during charging is used to perform energy supply during charging on the DC-DC module and the protocol module to obtain an energy supply result during charging;

[0175] When the output interface of the charger is not connected to the device to be charged, the protocol module is used to notify the control module of the standby state of the output interface, the standby state is fed back from the control module to the feedback loop module, and based on the standby state, the feedback loop module is used to activate the PWM control module to obtain a standby activation module;

[0176] The control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result, and according to the standby switch result and the charging energy supply result, the standby activation module and the power supply module are used to perform standby energy supply on the DC-DC module and the protocol module to obtain a standby energy supply result;

[0177] The energy supply result in standby mode is used to complete the generation of the zero-power standby circuit of the charger, and the generation result of the zero-power standby circuit of the charger is obtained.

[0178] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0179] Furthermore, if the module / unit integrated in the electronic device 1 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0180] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can implement:

[0181] Detect whether the output interface of the charger is connected to the device to be charged, wherein the charger includes a PWM control module, a feedback loop module, a power supply module, a control module, a DC-DC module, a protocol module, a DC-DC module switch and a protocol module switch;

[0182] When the output interface of the charger is connected to the device to be charged, the charging state of the output interface is notified to the control module by using the protocol module, the charging state is fed back from the control module to the feedback loop module, and based on the charging state, the PWM control module is activated by using the feedback loop module to obtain a charging activation module;

[0183] Based on the charging state, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switch result during charging, and according to the switch result during charging, the activation module during charging is used to perform energy supply during charging on the DC-DC module and the protocol module to obtain an energy supply result during charging;

[0184] When the output interface of the charger is not connected to the device to be charged, the protocol module is used to notify the control module of the standby state of the output interface, the standby state is fed back from the control module to the feedback loop module, and based on the standby state, the feedback loop module is used to activate the PWM control module to obtain a standby activation module;

[0185] The control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result, and according to the standby switch result and the charging energy supply result, the standby activation module and the power supply module are used to perform standby energy supply on the DC-DC module and the protocol module to obtain a standby energy supply result;

[0186] The energy supply result in standby mode is used to complete the generation of the zero-power standby circuit of the charger, and the generation result of the zero-power standby circuit of the charger is obtained.

[0187] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0188] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0189] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0190] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A method for generating an auxiliary circuit based on a zero-power standby charger, characterized in that: The method comprises: Detect whether the output interface of the charger is connected to the device to be charged, wherein the charger includes a PWM control module, a feedback loop module, a power supply module, a control module, a DC-DC module, a protocol module, a DC-DC module switch and a protocol module switch; When the output interface of the charger is connected to the device to be charged, the charging state of the output interface is notified to the control module by using the protocol module, the charging state is fed back from the control module to the feedback loop module, and based on the charging state, the PWM control module is activated by using the feedback loop module to obtain a charging activation module; Based on the charging state, the control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a switch result during charging, and according to the switch result during charging, the activation module during charging is used to perform energy supply during charging on the DC-DC module and the protocol module to obtain an energy supply result during charging; When the output interface of the charger is not connected to the device to be charged, the protocol module is used to notify the control module of the standby state of the output interface, the standby state is fed back from the control module to the feedback loop module, and based on the standby state, the feedback loop module is used to activate the PWM control module to obtain a standby activation module; The control module is used to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result, and according to the standby switch result and the charging energy supply result, the standby activation module and the power supply module are used to perform standby energy supply on the DC-DC module and the protocol module to obtain a standby energy supply result; The energy supply result in standby mode is used to complete the generation of the zero-power standby circuit of the charger, and the generation result of the zero-power standby circuit of the charger is obtained.

2. The method for generating an auxiliary circuit based on a zero-power standby charger according to claim 1, characterized in that: The step of detecting whether the output interface of the charger is connected to the device to be charged comprises: Obtaining pull-down resistances between pins in the charger; Using the hub in the charger to determine whether the differential data line in the charger changes from a low level to a high level; When the differential data line in the charger changes from a low level to a high level, determining that the pin changes from a low level to a high level under the action of the pull-down resistor; When the pin is changed from a low level to a high level under the action of the pull-down resistor, it is determined that the output interface of the charger is connected to the device to be charged; When the differential data line in the charger does not change from a low level to a high level, determining that the pin maintains a low level under the action of the pull-down resistor; When the pin maintains a low level under the action of the pull-down resistor, it is determined that the output interface of the charger is not connected to the device to be charged.

3. The auxiliary circuit generation method based on the zero-power standby charger according to claim 1, characterized in that: The using the protocol module to notify the control module of the charging state of the output interface includes: Identify the high level pin of the output interface; Using the protocol module to collect the pin voltage and pin current of the high-level pin; Calculate the load end power of the output interface by using the pin voltage and the pin current; Comparing the load end power with a preset power threshold to obtain a power comparison result; When the power comparison result is that the load end power is greater than a preset power threshold, taking the load end power as the charging state of the output interface; Acquire a DC-DC module in the charger; and collect a DC voltage and a DC current of the DC-DC module using the protocol module; Calculating the DC power of the DC-DC module by using the DC voltage and the DC current; The load-end power and the DC power are transmitted to the control module to complete the process of notifying the control module of the charging status of the output interface.

4. The method for generating an auxiliary circuit based on a zero-power standby charger according to claim 1, characterized in that: Feeding back the charging state from the control module to the feedback loop module includes: Obtaining a protocol module, a voltage-stabilizing charging module, and a power supply module in the charger; Using the control module to respectively detect the protocol power of the protocol module and the power supply power of the power supply module; Calculating the voltage stabilization power of the voltage stabilization charging module by using the power supply module; transmitting the regulated power from the power supply module to the control module; detecting the control power of the control module; The charging state, DC power, the protocol power, the supply power, the regulated power and the control power of the control module in the control module are transmitted to the feedback loop module to complete the process of feeding back the charging state from the control module to the feedback loop module.

5. The method for generating an auxiliary circuit based on a zero-power standby charger according to claim 1, characterized in that: The method of performing switch processing on the DC-DC module switch and the protocol module switch by using the control module based on the charging state to obtain a switch result during charging includes: Acquire an input switch and an output switch in the DC-DC module switch and a protocol module in the charger; Based on the charging state, using the control module to turn on the input switch, thereby turning on the input switch; Based on the charging state, using the control module to control the protocol module to perform an opening process on the output switch, thereby opening the output switch; Based on the charging state, using the control module to shut down the protocol module switch, thereby shutting down the protocol module switch; The turning on of the input switch, the turning on of the output switch and the turning off of the protocol module switch are taken as the switching result during charging.

6. The method for generating an auxiliary circuit based on a zero-power standby charger according to claim 1, characterized in that: The step of supplying energy to the DC-DC module and the protocol module during charging by the charging activation module according to the switching result during charging to obtain the energy supply result during charging includes: After the switching result during charging is fed back to the activation module during charging, the high level duty cycle during charging of the activation module during charging is calculated using the following formula: ； ； ； ； ； in, Indicates the high level duty cycle during charging, Indicates the input voltage of the charger. Indicates the voltage value of the high level, represents the power of the first output terminal, Indicates the number of coil turns at the charger input end. Indicates the number of coil turns at the charger’s output end. Indicates the output voltage of the charger. Indicates the output current of the charger, Indicates the total value of the output resistance of the charger; Adjusting the current duty cycle in the charging activation module to the charging high level duty cycle to obtain an adjusted duty cycle; When the power supply module in the charger is powered by the first module by adjusting the duty cycle, the DC-DC module in the charger is powered by the second module by adjusting the duty cycle to obtain a second power supply result; Performing a third module energy supply on the protocol module according to the second energy supply result to obtain a third energy supply result; The second energy supply result and the third energy supply result are used as energy supply results during charging.

7. The auxiliary circuit generation method based on the zero-power standby charger according to claim 1, characterized in that: The using the control module to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result includes: Using the control module to turn on the DC-DC module switch, thereby turning on the DC-DC module switch; Using the control module to shut down the protocol module switch, thereby shutting down the protocol module switch; The switching on of the DC-DC module and the switching off of the protocol module are used as the switching result in standby mode.

8. The method for generating an auxiliary circuit based on a zero-power standby charger according to claim 1, characterized in that: The step of supplying energy to the DC-DC module and the protocol module during standby by using the standby activation module and the power supply module according to the standby switch result and the charging energy supply result to obtain the standby energy supply result includes: Obtaining the voltage stabilization power of the voltage stabilization charging module in the charger; Based on the regulated power, the standby high level duty cycle of the standby activation module is calculated using the following formula: ； ； ； ； ； in, Indicates the high level duty cycle in standby mode. Indicates the input voltage of the charger. Indicates the voltage value of the high level, Indicates the number of coil turns at the charger input end. Indicates the number of coil turns at the charger’s output end. Indicates the output voltage of the charger. Indicates the regulated power, Indicates the total resistance value of the voltage stabilizing charging module. Indicates the output current of the charger; After adjusting the high-level duty cycle of the charging in the standby activation module to the high-level duty cycle of the standby, the voltage-stabilized charging module is stabilized and supplied with energy by using the high-level duty cycle of the standby to obtain a voltage-stabilized energy supply result; The power supply module is powered by the voltage stabilization power supply result to obtain a power supply result; The DC-DC module and the protocol module are powered in standby mode using the power supply result to obtain a standby power supply result.

9. An auxiliary circuit generation system based on a zero-power standby charger, characterized in that: The system comprises: An interface detection module, used to detect whether the output interface of the charger is connected to the device to be charged, wherein the charger includes a PWM control module, a feedback loop module, a power supply module, a control module, a DC-DC module, a protocol module, a DC-DC module switch and a protocol module switch; a first activation module, configured to, when the output interface of the charger is connected to a device to be charged, notify the control module of the charging state of the output interface by using the protocol module, feed back the charging state from the control module to the feedback loop module, and activate the PWM control module by using the feedback loop module based on the charging state, thereby obtaining a charging activation module; A charging energy supply module, configured to perform switch processing on the DC-DC module switch and the protocol module switch by using the control module based on the charging state to obtain a switch result during charging, and to perform charging energy supply on the DC-DC module and the protocol module by using the charging activation module according to the switch result during charging to obtain a charge energy supply result; a second activation module, configured to, when the output interface of the charger is not connected to the device to be charged, notify the control module of the standby state of the output interface by using the protocol module, feed back the standby state from the control module to the feedback loop module, and activate the PWM control module by using the feedback loop module based on the standby state, so as to obtain a standby activation module; A standby energy supply module, used to use the control module to perform switch processing on the DC-DC module switch and the protocol module switch to obtain a standby switch result, and according to the standby switch result and the charging energy supply result, perform standby energy supply on the DC-DC module and the protocol module through the standby activation module and the power supply module to obtain a standby energy supply result; The circuit generation module is used to complete the zero-power standby circuit generation of the charger by using the energy supply result during standby, and obtain the zero-power standby circuit generation result of the charger.

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