A charging system and method for mobile power supply

Abstract

The present invention discloses a charging system and method for mobile power supply, the system includes a wired charging and discharging unit, a wireless charging unit and a power supply unit, the wireless charging unit includes a wireless power supply control module and a charging transmitter, the wireless power supply control module receives the power supply signal transmitted by the wired charging and discharging unit through a wiring terminal, and wirelessly transmits power to the wireless charging receiving device through the charging transmitter, the wired charging and discharging unit is provided with a power connection terminal, a wired input and output port, and a DC / DC module, which are used for direct current transmission in wired mode and for transmitting power to the wireless charging unit through the wiring terminal. The method is applied to the above-mentioned charging system. The present invention can solve the problem that the existing mobile power supply cannot realize wired and wireless fast charging of two smart devices at the same time, and will not occupy the original output port of the system, can improve the charging efficiency, shorten the charging time, and greatly optimize the charging efficiency.

Description

[Technical field]

[0001] The present invention relates to the technical field of power supply charging, and in particular to a charging system applied to a mobile power supply and a charging method applied to the system. [Background technology]

[0002] As various portable electronic devices are used, batteries and battery charging methods that affect the performance and use time of portable electronic devices have aroused people's interest. As a result, electronic devices equipped with wireless charging devices and wired charging devices have emerged, and electronic devices that can provide both wired and wireless charging are also being developed.

[0003] At present, most of the mobile power supplies with wireless charging function on the market support both wired output fast charging to charge terminal devices (such as smartphones, laptops, tablets) and wireless output fast charging to charge terminal devices. However, when using wired and wireless charging to charge two terminal devices at the same time, both charging methods can only charge at ordinary speeds, and the function of simultaneous fast charging cannot be achieved.

[0004] In addition, in the existing mobile power supply with wireless charging function, the wireless charging transmitting circuit is connected to one of the output ports of the system, thus occupying the original output port. [Summary of the invention]

[0005] The main purpose of the present invention is to provide a charging system for a mobile power source which can realize wired and wireless rapid charging of two terminal devices simultaneously and will not occupy the original output ports of the system.

[0006] Another object of the present invention is to provide a charging system for a mobile power source that is compatible with both wired charging and wireless charging and can support both wired charging and wireless charging while achieving fast charging output.

[0007] In order to achieve the above-mentioned main purpose, the present invention provides a charging system for a mobile power supply, which includes a wired charging and discharging unit, a wireless charging unit and a power supply unit. The wireless charging unit includes a wireless power supply control module connected to the wiring terminal of the wired charging and discharging unit and a charging transmitter connected to the wireless power supply control module. The wireless power supply control module receives the power supply signal transmitted by the wired charging and discharging unit through the wiring terminal, and performs wireless power transmission to the wireless charging and receiving device through the charging transmitter. The wired charging and discharging unit is provided with a power connection terminal connected to the power supply unit, a wired input and output port connected to the wired charging and receiving device, and a DC / DC module connected to the wired input and output port, which is used for direct current transmission in wired mode and transmitting electric energy to the wireless charging unit through the wiring terminal, wherein the wiring terminal is a boost output terminal of the DC / DC module.

[0008] A further solution is that the wireless power supply control module includes a PWM drive circuit, an H-bridge resonant circuit, a half-wave rectifier circuit, a high- and low-pass filter circuit, a signal amplifying circuit and a decoding circuit, the PWM drive circuit receives a charging request signal sent by a wireless charging receiving device, the PWM drive circuit outputs a drive signal to the H-bridge resonant circuit, the H-bridge resonant circuit outputs a resonant signal to the half-wave rectifier circuit, the half-wave rectifier circuit outputs a half-wave rectifier signal to the high- and low-pass filter circuit, the high- and low-pass filter circuit outputs a filtered signal to the signal amplifying circuit, the signal amplifying circuit outputs an amplified signal to the decoding circuit, the decoding circuit decodes the received amplified signal to generate a data communication signal of the wireless charging receiving device, and outputs electrical energy to the wireless charging receiving device through the charging transmitting end according to the data communication signal.

[0009] A further solution is that the DC / DC module includes an MCU control circuit, a boost circuit and a buck circuit, the MCU control circuit is electrically connected to the boost circuit and the buck circuit respectively, wherein the boost output terminal is the VSYS output terminal of the boost circuit.

[0010] A further solution is that the wired input and output port includes a Micro-B input port, a Type-C input and output port, and two Type-A output ports, and switching tubes are respectively connected between the Micro-B input port, the Type-C input and output port, and the Type-A output port and the DC / DC module.

[0011] It can be seen that the charging system provided by the present invention mainly includes two circuits: wired charging and discharging and wireless charging transmission. The input of the wireless charging transmission circuit is connected to the VSYS node of the wired charging and discharging part, without occupying the original wired input and output ports.

[0012] The DC / DC module of the wired charging and discharging part supports both boost and buck modes. It works in buck mode when charging the battery and in boost mode when discharging mobile devices such as smartphones. It also supports one MicroB input port, one TypeC input and output port, and two TypeA output ports, which are used to charge mobile devices through data cables, and power the wireless charging unit through its own VSYS node, supporting fast charging protocols such as QC and PD.

[0013] Among them, the wireless charging unit is mainly composed of PWM drive circuit, H-bridge resonant circuit, half-wave rectification circuit, high-pass and low-pass filter circuit, and signal amplification and decoding circuit. It supports Qi wireless charging standard and has a maximum output power of 10W, which is used to charge wireless charging receiving devices.

[0014] Therefore, the present invention can solve the problem that the mobile power supply cannot realize wired and wireless fast charging of two smart devices at the same time, can speed up the charging speed of the power-consuming devices, greatly optimize the charging efficiency, thereby improving the charging efficiency and shortening the charging time.

[0015] In order to achieve the above-mentioned another purpose, the present invention also provides a charging method for a charging system applied to a mobile power supply, which is applied to the above-mentioned charging system, and the method includes: after determining that the current system is in a state detection mode, detecting whether a wireless charging receiving device is inserted, if so, entering the system output current limiting mode, judging whether the voltage of the wiring terminal of the wired charging and discharging unit is greater than a first preset voltage value, if the judgment result is yes, executing the wired output current limiting step, and entering the wireless charging energy transmission stage, wireless power transmission is performed to the wireless charging receiving device through the charging transmitting end of the wireless charging unit; when it is detected that a wired charging receiving device is inserted, the wireless charging unit is turned off, and the voltage of the wiring terminal is adjusted to a second preset voltage value, and the wireless charging unit is restarted within a predetermined time, and the wireless charging receiving device and the wired charging receiving device are charged at the same time.

[0016] A further solution is that the wired output current limiting step specifically includes: shutting down the output of all wired input and output ports of the wired charging and discharging unit, and at the same time shutting down the fast charging function of the wireless charging unit and the wired input and output port; after reducing the current limiting value of the wired input and output port to a preset current limiting value, enabling the fast charging function of the wired input and output port, and re-detecting each wired input and output port.

[0017] A further solution is that if it is determined that the voltage of the connection terminal of the wired charging and discharging unit is less than the first preset voltage value, the current limit value of the wired input and output port is directly set to the preset current limit value, and the wireless charging energy transmission stage is entered.

[0018] A further solution is that when the wireless charging unit is in an idle state, the current system re-enters the state detection mode, performs a state detection on the entire charging system, and restarts the wireless charging unit after the detection is completed.

[0019] A further solution is that when the current system enters the state detection mode, it is determined whether the wired input and output port restoration current limit flag is set. If the judgment result is yes and the wireless charging unit is in an idle state, the current limit value of the wired input and output port is restored to the original current limit value; the charging and discharging state conversion of the system is detected. When it is detected that the system is converted from the charging state to the discharging state or from the discharging state to the charging state, the wireless charging unit is turned off and the delayed start flag of the wireless charging unit is set; the overcurrent and undervoltage state of the wireless charging unit is detected. When the system is detected to be overcurrent or undervoltage, the charging transmitter of the wireless charging unit is reduced. The invention relates to a method for controlling the wireless charging unit and the wireless charging device. The method comprises the steps of: detecting the voltage of the wiring terminal of the wired charging and discharging unit, and when the change value between the current wiring terminal voltage and the initial wiring terminal voltage exceeds the third voltage preset value, turning off the wireless charging unit and setting the delayed start flag of the wireless charging unit; detecting the load state of the wired input and output ports and adjusting the wiring terminal voltage, and when all the wired input and output ports are under light load, turning off all the wired input and output ports, and adjusting the wiring terminal voltage to the fourth preset voltage value; judging whether the delayed start flag of the wireless charging unit is set and whether the delay time exceeds the preset time value, and if the judgment result is yes, restarting the wireless charging unit.

[0020] A further solution is that when it is detected that a wired charging receiving device is inserted, an interrupt handler is entered, the wireless charging unit is turned off in the interrupt handler, and the delayed start flag of the wireless charging unit is set. At the same time, the voltage of the terminal is adjusted to a second preset voltage value, and the wireless charging receiving device and the wired charging receiving device are charged at the same time.

[0021] It can be seen that the charging method provided by the present invention can solve the problem that the mobile power supply cannot realize wired and wireless fast charging of two smart devices at the same time, and will not occupy the original output port of the system. It adapts to the trend of today's fast charging technology and meets the needs of one mobile power supply to fast charge multiple devices at the same time. It can bring a better user experience, speed up the charging speed of power-consuming devices, greatly optimize the charging efficiency, thereby improving the charging efficiency and shortening the charging time.

Brief Description of the Drawings

[0022] Figure 1 The figure is a schematic diagram of an embodiment of a charging system applied to a mobile power source of the present invention.

[0023] Figure 2 The present invention is a flowchart of a charging method embodiment of a charging system for a mobile power source.

[0024] Figure 3 It is a principle block diagram of a wired output current limiting step in an embodiment of a charging method applied to a charging system of a mobile power source of the present invention.

[0025] Figure 4The present invention is a flowchart of charging a wired charging receiving device in a charging method embodiment of a charging system for a mobile power source. [Specific implementation method]

[0026] In order to make the purpose, technical solution and advantages of the invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not limited to the present invention.

[0027] An embodiment of a charging system applied to a mobile power source:

[0028] See also Figure 1 The charging circuit of the present invention includes a wired charging and discharging unit 10, a wireless charging unit 20 and a power supply unit 30. The wireless charging unit 20 includes a wireless power supply control module connected to the wiring terminal of the wired charging and discharging unit 10 and a charging transmitter connected to the wireless power supply control module. The wireless power supply control module receives the power supply signal transmitted by the wired charging and discharging unit 10 through the wiring terminal, and performs wireless power transmission to the wireless charging and receiving device 1 through the charging transmitter; the wired charging and discharging unit 10 is provided with a power supply connection terminal connected to the power supply unit 30, a wired input and output port connected to the wired charging and receiving device, and a DC / DC module 11 connected to the wired input and output port, which is used for direct current transmission in wired mode and transmitting electric energy to the wireless charging unit 20 through the wiring terminal, wherein the wiring terminal is a boost output terminal of the DC / DC module 11.

[0029] In this embodiment, the wireless power supply control module includes a PWM drive circuit 21, an H-bridge resonant circuit 22, a half-wave rectifier circuit 23, a high- and low-pass filter circuit 24, a signal amplifying circuit 25 and a decoding circuit 26. The PWM drive circuit 21 receives a charging request signal sent by the wireless charging receiving device 1, and the PWM drive circuit 21 outputs a drive signal to the H-bridge resonant circuit 22. The H-bridge resonant circuit 22 outputs a resonant signal to the half-wave rectifier circuit 23. The half-wave rectifier circuit 23 outputs a half-wave rectifier signal to the high- and low-pass filter circuit 24. The high- and low-pass filter circuit 24 outputs a filtered signal to the signal amplifying circuit 25. The signal amplifying circuit 25 outputs an amplified signal to the decoding circuit 26. The decoding circuit 26 decodes the received amplified signal to generate a data communication signal of the wireless charging receiving device 1, and outputs electric energy to the wireless charging receiving device 1 through the charging transmitting end according to the data communication signal.

[0030] In this embodiment, the DC / DC module 11 includes an MCU control circuit, a boost circuit and a buck circuit, and the MCU control circuit is electrically connected to the boost circuit and the buck circuit respectively, wherein the boost output terminal is the VSYS output terminal of the boost circuit.

[0031] Specifically, the H-bridge resonant circuit 22 includes a capacitor and a transmitting coil. The charging transmitting end of this embodiment can be the transmitting coil of the H-bridge resonant circuit 22. When the decoding circuit performs signal processing, it generates a data communication signal of the wireless charging receiving device 1. The MCU control circuit outputs electric energy to the wireless charging receiving device 1 through the transmitting coil of the H-bridge resonant circuit 22 according to the data communication signal. It can be seen that the MCU is integrated in the DC / DC module, and the system is more modular. The MCU is used as the main control center to control the wireless charging unit and the wired charging and discharging unit to charge / discharge the charging device, which is more applicable.

[0032] In this embodiment, the wired input and output ports include a Micro-B input port 14, a Type-C input and output port 12, and two Type-A output ports 13. Switch tubes 15 are respectively connected between the Micro-B input port 14, the Type-C input and output port 12, and the Type-A output port 13 and the DC / DC module 11. Preferably, the switch tube 15 is a MOS tube.

[0033] Specifically, the DC / DC module 11 of the wired charging and discharging unit 10 supports both boost and buck modes. It works in buck mode when charging the battery and in boost mode when discharging mobile devices such as smartphones. It also supports a Micro-B input port 14, a Type-C input and output port 12, and two Type-A output ports 13, which are used to charge mobile devices through data connection cables, and power the wireless charging unit 20 through its own VSYS node, supporting fast charging protocols such as QC and PD.

[0034] The wireless charging unit 20 is mainly composed of a PWM drive circuit 21, an H-bridge resonant circuit 22, a half-wave rectifier circuit 23, a high-pass and low-pass filter circuit 24, a signal amplifier circuit 25, and a decoding circuit 26. Among them, the PWM drive circuit 21 drives the H-bridge resonant circuit 22, and the generated resonant signal passes through the half-wave rectifier circuit 23 to obtain only a positive signal. The signal then passes through the high-pass and low-pass filter circuit 24 to obtain a small signal with a frequency range of 320Hz to 3200Hz, and then is sent to the signal amplifier circuit 25 and the decoding circuit 26 for signal amplification and decoding, and finally obtains the charging request signal sent by the wireless charging receiving device 1. Therefore, the wireless charging unit 20 supports the Qi wireless charging standard, with a maximum output power of 10W, and is used to charge the wireless charging receiving device 1.

[0035] It can be seen that the charging system provided by the present invention mainly includes two circuits: wired charging and discharging and wireless charging transmission. The input of the wireless charging transmission circuit is connected to the VSYS node of the wired charging and discharging part, without occupying the original wired input and output ports.

[0036] At the same time, the present invention can solve the problem that the mobile power supply cannot realize wired and wireless fast charging of two smart devices at the same time, can speed up the charging speed of power-consuming devices, greatly optimize the charging efficiency, thereby improving the charging efficiency and shortening the charging time.

[0037] A charging method embodiment of a charging system applied to a mobile power source:

[0038] A charging method for a charging system of a mobile power source is applied to the above-mentioned charging system. Figure 2 As shown, when charging an electrical device, the method first executes step S1 to determine that the current system is in a state detection mode, and then executes step S2 to detect whether a wireless charging receiving device 1 is inserted. If so, step S3 is executed to enter the system output current limiting mode.

[0039] Then, step S4 is executed to determine whether the voltage of the connection terminal of the wired charging and discharging unit 10 is greater than the first preset voltage value. If the judgment result is yes, step S5 is executed, that is, the wired output current limiting step is executed. Among them, if it is determined that the voltage of the connection terminal of the wired charging and discharging unit 10 is less than the first preset voltage value, the current limiting value of the wired input and output port is directly set to the preset current limiting value, and the wireless charging energy transmission stage is entered.

[0040] like Figure 3 As shown, the wired output current limiting step specifically includes: step S21, turning off the output of all wired input and output ports of the wired charging and discharging unit 10; step S22, simultaneously turning off the wireless charging unit 20 and the fast charging function of the wired input and output port; step S23, reducing the current limiting value of the wired input and output port to a preset current limiting value; step S24, enabling the fast charging function of the wired input and output port, and re-detecting each wired input and output port.

[0041] Then, step S6 is executed to enter the wireless charging energy transmission phase, and wireless power is transmitted to the wireless charging receiving device 1 through the charging transmitting end of the wireless charging unit 20 .

[0042] When the wireless charging unit 20 is in an idle state, the current system re-enters the state detection mode, performs a state detection on the entire charging system, and restarts the wireless charging unit 20 after the detection is completed.

[0043] In step S1, when the current system enters the state detection mode, it is determined whether the wired input / output port current limit restoration flag is set. If the determination result is yes and the wireless charging unit 20 is in an idle state, the current limit value of the wired input / output port is restored to the original current limit value.

[0044] Then, the charging and discharging state transition of the system is detected. When it is detected that the system transitions from the charging state to the discharging state or from the discharging state to the charging state, the wireless charging unit 20 is turned off and a delayed start flag of the wireless charging unit 20 is set.

[0045] Then, the overcurrent and undervoltage states of the wireless charging unit 20 are detected. When the system overcurrent or undervoltage is detected, the transmission power of the charging transmitting end of the wireless charging unit 20 is reduced.

[0046] Then, the voltage of the connection terminal of the wired charging and discharging unit 10 is detected. When the change between the current connection terminal voltage and the initial connection terminal voltage exceeds the third voltage preset value, the wireless charging unit 20 is turned off and the delayed start flag of the wireless charging unit 20 is set.

[0047] Then, the load status of the wired input / output ports is detected and the voltage of the wiring terminals is adjusted. When all the wired input / output ports are under light load, all the wired input / output ports are closed and the voltage of the wiring terminals is adjusted to a fourth preset voltage value.

[0048] Then, it is determined whether the delayed start flag of the wireless charging unit 20 is set and whether the delay time exceeds a preset time value. If the determination result is yes, the wireless charging unit 20 is restarted.

[0049] When charging a wired charging receiving device, first, execute steps S11 and S12 to detect whether a wired charging receiving device is inserted. When it is detected that a wired charging receiving device is inserted, execute step S13 to turn off the wireless charging unit 20 and adjust the voltage of the terminal to a second preset voltage value.

[0050] Then, step S14 is executed to restart the wireless charging unit 20 within a predetermined time.

[0051] Then, step S15 is executed to charge the wireless charging receiving device 1 and the wired charging receiving device simultaneously.

[0052] It can be seen that when it is detected that a wired charging receiving device is inserted, the interrupt handler will be entered, the wireless charging unit 20 will be turned off in the interrupt handler, and the delayed start flag of the wireless charging unit 20 will be set. At the same time, the voltage of the terminal is adjusted to the second preset voltage value, and the wireless charging receiving device 1 and the wired charging receiving device are charged at the same time.

[0053] In actual application, when the charging system is turned on, the system is initialized first. The initialization process includes initializing the system clock, initializing the power display, and obtaining the user configuration. Then, the wired charging and discharging unit 10 is initialized, including enabling the button shutdown function and the light load shutdown function. Then, the wireless charging unit 20 is initialized, including saving the default output current limit value of the wired port, initializing the PWM drive circuit 21, and initializing the wireless signal decoding module. Finally, the system enters the state detection mode loop.

[0054] When the system enters the state detection mode cycle, the wireless charging unit 20 will detect whether there is a wireless charging receiving device 1 inserted. If it is detected that a device is inserted, the system enters the output current limiting mode, that is, it determines whether the VSYS terminal voltage of the wired charging and discharging unit 10 is greater than 6V and whether the total output power of the system is greater than 10W. If the judgment result is yes, all wired input and output ports are closed, and the fast charging function of the wireless charging unit 20 and the wired input and output ports are closed at the same time, and the current limiting value of the wired input and output ports is reduced to half of the original value, and then the fast charging function of the wired input and output ports is enabled, and finally each wired input and output port is re-detected. If the VSYS terminal voltage of the wired charging and discharging unit 10 is less than 6V and the total output power of the system is less than 10W, the wired output current limit is directly set to half of the original value, and the wireless charging energy transmission stage is entered.

[0055] When the wireless charging unit 20 cannot detect the wireless charging receiving device 1, the wired input and output port current limiting flag is set.

[0056] Next, it is determined whether the wired input / output port current limiting restoration flag is set, and if so and the wireless charging unit 20 is in an idle state, the wired input / output port current limiting is restored.

[0057] Next, it is detected whether the charging and discharging states of the system are switched. If so, the wireless charging unit 20 is turned off and a delayed start flag of the wireless charging unit 20 is set.

[0058] Next, it is detected whether the wireless charging unit 20 is over-current or under-voltage, and if so, the transmission power of the wireless charging unit 20 is reduced.

[0059] Next, the VSYS voltage is detected. If the current VSYS voltage varies from the initial VSYS voltage by more than 1.5V, the wireless charging unit 20 is turned off and a delayed start flag of the wireless charging unit 20 is set.

[0060] Next, the states of the wired input and output ports are detected. If all are in a light-load state and the wireless charging unit 20 is working in a non-fast charging state, all the wired input and output ports are closed and the VSYS voltage is adjusted to 9V.

[0061] Finally, it is determined whether the delayed start flag of the wireless charging unit 20 is set and whether the delay time exceeds 3 seconds. If yes, the wireless charging unit 20 is restarted.

[0062] like Figure 4 As shown, when the wired input / output port detects that a device is plugged in, an interruption processing program is entered, in which the wireless charging unit 20 is turned off and the VSYS voltage is adjusted to 5V. The VSYS voltage is adjusted by hardware.

[0063] It can be seen that the charging method provided by the present invention can solve the problem that the mobile power supply cannot realize wired and wireless fast charging of two smart devices at the same time, and will not occupy the original output port of the system. It adapts to the trend of today's fast charging technology and meets the needs of one mobile power supply to fast charge multiple devices at the same time. It can bring a better user experience, speed up the charging speed of power-consuming devices, greatly optimize the charging efficiency, thereby improving the charging efficiency and shortening the charging time.

[0064] It should be noted that the above are only preferred embodiments of the present invention, but the design concept of the invention is not limited thereto, and any non-substantial modifications made to the present invention using this concept also fall within the protection scope of the present invention.

Claims

1. A charging method for a charging system of a mobile power source, the charging system comprising a wired charging and discharging unit, a wireless charging unit and a power supply unit, characterized in that: The wireless charging unit includes a wireless power supply control module connected to the wiring terminal of the wired charging and discharging unit and a charging transmitter connected to the wireless power supply control module. The wireless power supply control module receives the power supply signal transmitted by the wired charging and discharging unit through the wiring terminal, and performs wireless power transmission to the wireless charging receiving device through the charging transmitter. The wired charging and discharging unit is provided with a power connection terminal connected to the power supply unit, a wired input and output port connected to a wired charging and receiving device, and a DC / DC module connected to the wired input and output port, which is used for direct current transmission in wired mode and for transmitting electric energy to the wireless charging unit through the wiring terminal, wherein the wiring terminal is a boost output terminal of the DC / DC module; The method comprises: after determining that the current system is in a state detection mode, detecting whether a wireless charging receiving device is inserted, if so, entering a system output current limiting mode, judging whether the voltage of a connection terminal of a wired charging and discharging unit is greater than a first preset voltage value, if the judgment result is yes, executing a wired output current limiting step, and entering a wireless charging energy transmission stage, performing wireless energy transmission to the wireless charging receiving device through a charging transmitting end of the wireless charging unit; when it is detected that a wired charging receiving device is inserted, turning off the wireless charging unit, adjusting the voltage of the connection terminal to a second preset voltage value, and restarting the wireless charging unit within a predetermined time, and charging the wireless charging receiving device and the wired charging receiving device at the same time.

2. The charging method according to claim 1, characterized in that: The wireless power supply control module includes a PWM drive circuit, an H-bridge resonant circuit, a half-wave rectifier circuit, a high- and low-pass filter circuit, a signal amplifying circuit and a decoding circuit. The PWM drive circuit receives a charging request signal sent by a wireless charging receiving device, and the PWM drive circuit outputs a drive signal to the H-bridge resonant circuit. The H-bridge resonant circuit outputs a resonant signal to the half-wave rectifier circuit. The half-wave rectifier circuit outputs a half-wave rectifier signal to the high- and low-pass filter circuit. The high- and low-pass filter circuit outputs a filter signal to the signal amplifying circuit. The signal amplifying circuit outputs an amplified signal to the decoding circuit. The decoding circuit decodes the received amplified signal to generate a data communication signal of the wireless charging receiving device, and outputs electric energy to the wireless charging receiving device through the charging transmitting end according to the data communication signal.

3. The charging method according to claim 1 or 2, characterized in that: The DC / DC module includes an MCU control circuit, a boost circuit and a buck circuit, wherein the MCU control circuit is electrically connected to the boost circuit and the buck circuit respectively, wherein the boost output terminal is a VSYS output terminal of the boost circuit.

4. The charging method according to claim 1 or 2, characterized in that: The wired input and output ports include a Micro-B input port, a Type-C input and output port, and two Type-A output ports. Switch tubes are respectively connected between the Micro-B input port, the Type-C input and output port, and the Type-A output port and the DC / DC module.

5. The charging method according to claim 1, characterized in that: The wired output current limiting step specifically includes: shutting down the output of all wired input and output ports of the wired charging and discharging unit, and shutting down the fast charging function of the wireless charging unit and the wired input and output ports; After reducing the current limit value of the wired input and output port to the preset current limit value, enable the fast charging function of the wired input and output port, and re-detect each wired input and output port.

6. The charging method according to claim 5, characterized in that: If it is determined that the voltage of the connection terminal of the wired charging and discharging unit is less than the first preset voltage value, the current limit value of the wired input and output port is directly set to the preset current limit value, and the wireless charging energy transmission stage is entered.

7. The charging method according to claim 1, characterized in that: When the wireless charging unit is in an idle state, the current system re-enters the state detection mode, performs a state detection on the entire charging system, and restarts the wireless charging unit after the detection is completed.

8. The charging method according to claim 7, characterized in that: When the current system enters the state detection mode, it is determined whether the wired input and output port current limit restoration flag is set. If the determination result is yes and the wireless charging unit is in an idle state, the current limit value of the wired input and output port is restored to the original current limit value; Detecting the charging and discharging state transition of the system, when detecting that the system transitions from the charging state to the discharging state or from the discharging state to the charging state, turning off the wireless charging unit and setting the delayed start flag of the wireless charging unit; Detecting the overcurrent and undervoltage status of the wireless charging unit, and reducing the transmission power of the charging transmitter of the wireless charging unit when the system is detected to be overcurrent or undervoltage; Detecting the voltage of the wiring terminal of the wired charging and discharging unit, when the difference between the current wiring terminal voltage and the initial wiring terminal voltage exceeds a third voltage preset value, turning off the wireless charging unit and setting a delayed start flag of the wireless charging unit; Detecting the load status of the wired input and output ports and adjusting the voltage of the wiring terminals, when all the wired input and output ports are under light load, closing all the wired input and output ports, and adjusting the voltage of the wiring terminals to a fourth preset voltage value; It is determined whether the delayed start flag of the wireless charging unit is set and whether the delay time exceeds a preset time value. If the determination result is yes, the wireless charging unit is restarted.

9. The charging method according to claim 8, characterized in that: When it is detected that a wired charging receiving device is inserted, an interrupt handler is entered, in which the wireless charging unit is turned off, and a delayed start flag of the wireless charging unit is set. At the same time, the voltage of the terminal is adjusted to a second preset voltage value, and the wireless charging receiving device and the wired charging receiving device are charged at the same time.

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