CN113009995B - Power supply device and power supply method - Google Patents

Abstract

The embodiment of the application provides a power supply device and a power supply method, and relates to the field of electronic equipment, such as computers, tablet computers, notebooks, portable computers and the like. The specific scheme is as follows: when the power interface is coupled with an external power supply, the first power supply unit supplies power to the system unit, the first control unit controls the first switch unit to be turned on so that the first power supply unit supplies power to the battery, and the second control unit controls the second switch unit to be turned on so that the second power supply unit supplies power to the battery; or when the power interface is coupled with the external power supply, the first power supply unit supplies power to the system unit, the first control unit controls the first switch unit to be turned off, and the second control unit controls the second switch unit to be turned on so that the second power supply unit supplies power to the battery. By the technical scheme provided by the embodiment of the application, the electronic equipment can be rapidly charged.

Description

A power supply device and power supply method

Technical field

Embodiments of the present application relate to the field of electronic equipment, and in particular, to a power supply device and a power supply method.

Background technique

In electronic equipment, the power supply (charger) unit is an essential component. For example, taking the electronic device as a personal computer (PC), the charger unit can process the current incoming from the external power supply (such as boosting or reducing the voltage) to provide current for the operation of the electronic device, for example , supplies power to the PC system and to the PC's battery (Battery, BAT).

It can be seen that the charger unit not only needs to provide current for the operation of the PC system, but also needs to supply power to the battery. This will put a greater burden on the charger unit, which also leads to serious heating of the charger unit, which in turn affects the charger. The power supply efficiency of the unit.

At the same time, with the upgrading of electronic equipment, the requirements for power supply current of electronic equipment have become higher. For example, as the functionality of the PC system becomes more powerful, the charger unit is required to provide larger power supply current to the PC system. For another example, with the increase in battery capacity and the demand for fast charging, the charger unit is required to provide larger power supply current to supply power to the battery. Requiring the charger unit to provide larger current will cause the heating problem of the charger unit to become more prominent, seriously affecting the power supply efficiency of the charger unit.

Contents of the invention

Embodiments of the present application provide a power supply device and a power supply method, which relate to the field of electronic equipment, such as computers, computers, tablet computers, notebooks, portable machines, etc. It effectively reduces the heat generated during the operation of the power supply unit, thereby improving the power supply efficiency of the power supply unit and reducing the risk of damaging the power supply unit.

In order to achieve the above objectives, the embodiments of this application adopt the following technical solutions:

In a first aspect, embodiments of the present application provide a power supply device, which is applied to electronic equipment. The electronic equipment further includes a battery and a system unit. The power supply device includes: a power interface, a first power supply unit and a second power supply unit. Wherein, the first power supply unit includes a first switch unit and a first control unit, and the second power supply unit includes a second switch unit and a second control unit. The power interface is coupled to the first end of the first switch unit, the first end of the first switch unit is also coupled to the system unit, the second end of the first switch unit is coupled to the battery, and the first end of the first switch unit is coupled to the system unit. A third terminal of a switch unit is coupled to the first control unit. The power interface is also coupled to the first end of the second switch unit, the second end of the second switch unit is coupled to the battery, and the third end of the second switch unit is coupled to the second control unit. When the power interface is coupled to an external power supply, the first power supply unit supplies power to the system unit. The first control unit controls the first switch unit to be turned on so that the first power supply unit supplies power to the battery. The second control unit The unit controls the second switch unit to be turned on so that the second power supply unit supplies power to the battery. Alternatively, when the power interface is coupled to the external power supply, the first power supply unit supplies power to the system unit, the first control unit controls the first switch unit to be turned off, and the second control unit controls the second switch unit to be turned on. , so that the second power supply unit supplies power to the battery. Based on the above solution, the second power supply unit can share the pressure of the first power supply unit to supply battery, so that neither power supply unit will work under a large power supply pressure for a long time, effectively reducing the heat generated by the power supply unit during operation. , thereby improving the power supply efficiency of the power supply unit and reducing the risk of damaging the power supply unit.

In some implementations, the first power supply unit further includes: a first adapter unit, a first end of the first adapter unit is coupled to the power interface, and a second end of the first adapter unit is coupled to the third A first end of a switch unit is coupled, and a control end of the first adaptation unit is coupled to the first control unit. When the power interface is coupled to the external power supply, the first adaptation unit adapts the current input by the external power supply and outputs it under the control of the first control unit. Based on the above solution, a first adaptation unit is provided in the first power supply unit to perform adaptation processing on the connected current, so that when the current connected to the first power supply unit cannot meet the power supply needs of the system unit and the battery, the third A power supply unit can use the adapted current to power the system unit and the battery or only the battery.

In some implementations, the first adaptation unit includes a first transistor, a second transistor, a first inductor, a third transistor and a fourth transistor. The first terminal of the first transistor is the first terminal of the first adaptation unit and is coupled to the power interface. The second terminal of the first transistor is coupled to the first terminal of the second transistor. The second terminal The second end of the transistor is connected to ground. The first end of the second transistor is also coupled to one end of the first inductor. The other end of the first inductor is coupled to the first end of the third transistor. The third transistor has The second terminal is connected to ground. The first terminal of the third transistor is also coupled to the second terminal of the fourth transistor. The first terminal of the fourth transistor is the second terminal of the first adaptation unit and is connected to the first terminal of the first adapter unit. The first terminal of the switch unit is coupled. The third terminal of the first transistor, the third terminal of the second transistor, the third terminal of the third transistor and the third terminal of the fourth transistor are all control terminals of the first adaptation unit. When the first power supply unit only supplies power to the system unit, the first control unit controls the first transistor and the fourth transistor to be in the on state, and controls the second transistor and the third transistor to be in the off state, so that the The first adaptation unit adapts the current input by the external power supply and outputs it. When the first power supply unit supplies power to the system unit and the battery, the first control unit controls the first transistor, the second transistor, the third transistor and the fourth transistor to be in a switching state so that the first appropriate The matching unit adapts the current input by the external power supply and outputs it. For example, the first transistor, the second transistor, the third transistor and the fourth transistor may be N-channel field effect transistors (NMOS transistors). Among them, the first terminal of the transistor is the drain of the NMOS tube, the second terminal is the source of the NOMS tube, and the third terminal is the gate of the NMOS tube. Based on the above solution, through an adaptation unit composed of multiple transistors and inductors, the current connected to the first power supply unit can be adapted to step up or step down, so that the processed current can meet the requirements of the system unit and battery or Requirements for battery power only.

In some implementations, the second power supply unit further includes: a second adapter unit, a first end of the second adapter unit is coupled to the power interface, and a second end of the second adapter unit is coupled to the third adapter unit. The first ends of the two switch units are coupled, and the control end of the second adaptation unit is coupled to the second control unit. When the power interface is coupled to the external power supply, the second adaptation unit adapts the current input by the external power supply and outputs it under the control of the second control unit. Based on the above solution, a second adaptation unit is provided in the second power supply unit to perform adaptation processing on the connected current, so that when the current connected to the second power supply unit cannot meet the power supply demand of the battery, the second power supply unit The adapted current can be used to power the battery for output.

In some implementations, the second adaptation unit includes a fifth transistor, a sixth transistor, a second inductor, a seventh transistor, and an eighth transistor. The first terminal of the fifth transistor is the first terminal of the second adaptation unit and is coupled to the power interface. The second terminal of the fifth transistor is coupled to the first terminal of the sixth transistor. The sixth transistor The second end of the transistor is grounded, the first end of the sixth transistor is also coupled to one end of the second inductor, the other end of the second inductor is coupled to the first end of the seventh transistor, and the seventh transistor The second end of the seventh transistor is connected to the ground. The second end of the seventh transistor is also coupled to the second end of the eighth transistor. The first end of the eighth transistor is the second end of the second adaptation unit and is connected to the second end of the second adapting unit. The first terminal of the switch unit is coupled. The third terminal of the fifth transistor, the third terminal of the sixth transistor, the third terminal of the seventh transistor and the third terminal of the eighth transistor are all control terminals of the second adaptation unit. When the second power supply unit supplies power to the battery, the second control unit controls the fifth transistor, the sixth transistor, the seventh transistor and the eighth transistor to be in a switching state so that the second adaptation unit The current input by the external power supply is adapted and output. For example, the fifth transistor, the sixth transistor, the seventh transistor and the eighth transistor may be N-channel field effect transistors (NMOS transistors). Among them, the first terminal of the transistor is the drain of the NMOS tube, the second terminal is the source of the NOMS tube, and the third terminal is the gate of the NMOS tube. Based on the above solution, through an adaptation unit composed of multiple transistors and inductors, the current connected to the second power supply unit can be adapted to step up or step down, so that the processed current can meet the requirements of powering only the battery. .

In some implementations, the first switch unit is a ninth transistor. For example, the ninth transistor may be a P-channel field effect transistor (PMOS transistor), and the first end of the ninth transistor (such as the source of the PMOS transistor) is the first end of the first switching unit. The drain of the second terminal of the transistor (such as the drain of the PMOS tube) is the second terminal of the first switching unit, and the third terminal of the ninth transistor (such as the gate of the PMOS tube) is the third terminal of the first switching unit. end. The second switching unit is a tenth transistor. For example, the tenth transistor can be a P-channel field effect transistor (PMOS transistor). The first end of the tenth transistor (such as the source of the PMOS transistor) is the second transistor. The first terminal of the switching unit, the second terminal of the tenth transistor (such as the drain of the PMOS tube), the second terminal of the second switching unit, and the third terminal of the tenth transistor (such as the gate of the PMOS tube) is the third terminal of the second switch unit. Based on the above solution, by controlling the ninth transistor and the tenth transistor to be in an on or off state, the first switch unit and the second switch unit are in different on-off states, thereby enabling the first power supply unit to simultaneously power the system unit. and battery powered, or battery powered only. At the same time, the second power supply unit can supply power to the battery or not.

In a second aspect, embodiments of the present application provide a power supply method, which is applied to electronic equipment. The electronic equipment includes any one of the power supply devices, batteries, and system units in the above-mentioned first aspect and its optional solutions. The method includes: the power interface is coupled with an external power supply, and the system unit controls the first power supply unit and the second power supply unit to start working. The system unit controls the first power supply unit to operate in a first mode so that the first power supply unit supplies power to the system unit, and controls the second power supply unit to operate in a second mode so that the second power supply unit supplies power to the battery. Alternatively, the system unit controls the first power supply unit to operate in a third mode so that the first power supply unit supplies power to the system unit and the battery, and controls the second power supply unit to operate in the second mode so that the second power supply unit The power supply unit supplies power to the battery. Based on the above solution, the second power supply unit in the electronic device can share the power supply pressure of the first power supply unit on the battery, so that the power supply unit can provide a larger power supply current for the electronic device while effectively reducing the power supply unit during its working process. generate heat, thus improving the power supply efficiency of the power supply unit and reducing the risk of damaging the power supply unit.

In some implementations, the method further includes: when the system unit controls the first power supply unit and the second power supply unit to start working, the system unit detects the remaining power of the battery. Wherein, when the remaining power of the battery is less than the first threshold, or the remaining power of the battery cannot be detected, the system unit controls the power supply device to operate in the trickle charging mode. When the power supply device operates in the trickle charging mode, When , the first power supply unit operates in the first mode, the second power supply unit operates in the second mode, and the power supply parameters of the first power supply unit and the second power supply unit are first parameters. When the remaining power of the battery is greater than the first threshold and less than the second threshold, the system unit controls the power supply device to operate in the fast charging mode. When the power supply device operates in the fast charging mode, the first power supply unit Working in the third mode, the second power supply unit works in the second mode, the power supply parameters of the first power supply unit and the second power supply unit are second parameters, and the second threshold is greater than the first threshold. When the remaining power of the battery is greater than the second threshold and the battery is not fully charged, the system unit controls the power supply device to operate in the termination charging mode. When the power supply device operates in the termination charging mode, the first power supply The unit operates in the first mode, the second power supply unit operates in the second mode, and the power supply parameters of the first power supply unit and the second power supply unit are third parameters. Wherein, the first parameter and the third parameter are different. When the power supply device works in the fast charging mode, the charging rate of the battery is higher than when the power supply device works in the trickle charging mode or the termination charging mode. The charging rate of the battery. Based on the above solution, when the battery power is in different states, by controlling the power supply device to work in different power supply modes, the power supply device can adapt to the power supply needs of the system unit and the battery, thereby improving the power supply efficiency of the power supply device.

In some implementations, the method further includes: while the power supply device is operating in the trickle charging mode, the system unit continues to detect the remaining power of the battery. When the remaining power of the battery is greater than the first threshold and less than the second threshold, the system unit controls the power supply device to switch from the trickle charging mode to the fast charging mode. Based on the above solution, the switch to the fast charging mode is realized after the power supply device operates in the trickle charging mode.

In some implementations, the method further includes: while the power supply device is operating in the fast charging mode, the system unit continues to detect the remaining power of the battery. When the remaining power of the battery is greater than the second threshold, the system unit controls the power supply device to switch from the fast charging mode to the termination charging mode. Based on the above solution, the switching to the termination charging mode is realized after the power supply device operates in the fast charging mode.

In some implementations, the method further includes: while the power supply device is operating in the termination charging mode, the system unit continues to detect the remaining power of the battery. When the battery is fully charged, the system unit controls the first power supply unit to operate in the first mode and turns off the second power supply unit. Based on the above solution, the switching to the full power mode is realized after the power supply device operates in the termination charging mode.

In some implementations, when the remaining power of the battery is greater than the first threshold and less than the second threshold, before the system unit controls the power supply device to operate in the fast charging mode, the method further includes: the system unit determines the The system status of the system unit is powered on. The system unit obtains the load status of the system unit at the current moment. The load status of the system unit includes light load and heavy load. When the load status of the system unit is heavy load, the demand for current is greater than the demand for current when the load status of the system unit is light load. The system unit controls the power supply device to operate in the fast charging mode, including: when the load state of the system unit is light load, the system unit controls the power supply device to operate in the fast charging mode. Based on the above solution, when the battery can be quickly charged, by determining the system status and load status, it is determined that fast charging of the battery will not affect the power supply output to the system unit.

In some implementations, the method further includes: when the load status of the system unit is heavy load, the system unit controls the power supply device to operate in the pass-through and switching charging modes. Wherein, when the power supply device works in the pass-through and switching charging modes, the first power supply unit works in the first mode, the second power supply unit works in the second mode, the first power supply unit and the second power supply unit The power supply parameter of the unit is a fourth parameter, which is different from the first parameter and the third parameter. Based on the above solution, when the battery can be charged quickly, if a larger current power supply output is needed to the system unit, that is, the load status is heavy load, the power supply output of the system unit can be prioritized.

In some implementations, the method further includes: while the power supply device is operating in the pass-through and switching charging modes, the system unit continues to detect the remaining power of the battery. When the remaining power of the battery is greater than the second threshold, the system unit controls the power supply device to switch from the pass-through and switching charging modes to the termination charging mode. Based on the above solution, when the power supply device operates in the pass-through and switching charging modes, it is switched to the termination charging mode.

In some implementations, the power interface is coupled to the external power supply through a power adapter unit. Before the system unit controls the first power supply unit and the second power supply unit to start working, the method further includes: the system unit determines The power adapter unit and the cable coupling the power adapter unit and the power interface meet a preset standard. The preset standard is used to indicate that the power adapter unit and the cable can support the first power supply unit and the power interface. The second power supply unit works simultaneously. Based on the above solution, when it is determined that peripherals, such as power adapter units and cables, can meet the conditions for two power supply units to work at the same time, the two power supply units can be started to work at the same time.

In some implementations, when one or both of the power adapter unit or the cable coupling the power adapter unit and the power interface does not meet the preset standard, the first power supply unit is activated to start power output. Based on the above solution, when peripherals, such as power adapter units or cables, do not meet the preset standards, two power supply units cannot be normally activated at the same time for power output. This application provides a method that cannot activate two power supply units at the same time for power output. The working solution is to start only the first power supply unit to start working.

In a third aspect, embodiments of the present application provide a chip system. The chip system is used in electronic equipment. The chip system includes one or more interface circuits and one or more processors. The interface circuit and the processor are interconnected through lines. The interface circuit is configured to receive a signal from a memory of the electronic device and send the signal to the processor, where the signal includes computer instructions stored in the memory. When the processor executes the computer instruction, the electronic device executes the power supply method as described in the above second aspect and possible implementations thereof.

In the fourth aspect, embodiments of the present application provide a device that has the function of realizing the behavior of the electronic device in the methods of the above aspects. Functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions, for example, a control unit or module, a detection unit or module, a judgment unit or module, an acquisition unit or module, etc.

In a fifth aspect, embodiments of the present application provide a readable storage medium. The readable storage medium includes: computer software instructions. When the computer software instructions are run in the control device, the control device is caused to execute the power supply method as described in the second aspect or any one of the possible implementations of the second aspect.

In a sixth aspect, embodiments of the present application provide a computer program product. When the computer program product is run on the computer, the computer is caused to execute the power supply method as described in the second aspect or any of the possible implementations of the second aspect, so as to realize the behavioral functions of the power supply device.

It can be understood that the chip system of the third aspect provided above, the device of the fourth aspect provided above, the readable storage medium of the fifth aspect provided above and the computer program product of the sixth aspect provided above are all used to execute the above. The corresponding method is provided. Therefore, the beneficial effects it can achieve can be referred to the beneficial effects in the corresponding methods provided above, which will not be described again here.

Description of the drawings

Figure 1 is a schematic diagram of the composition of a power supply unit;

Figure 2 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

Figure 3 is a schematic structural diagram of a power supply device provided by an embodiment of the present application;

Figure 4 is a schematic structural diagram of another power supply device provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of another power supply device provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of another power supply device provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of another power supply device provided by an embodiment of the present application;

Figure 8 is a schematic flow chart of a power supply method provided by an embodiment of the present application;

Figure 9 is a schematic flow chart of another power supply method provided by an embodiment of the present application;

Figure 10 is a schematic flow chart of another power supply method provided by an embodiment of the present application;

Figure 11 is a schematic flow chart of another power supply method provided by an embodiment of the present application;

Figure 12 is a schematic flow chart of another power supply method provided by an embodiment of the present application;

FIG. 13 is a schematic diagram of a chip system provided by an embodiment of the present application.

Detailed ways

Generally speaking, electronic equipment will include a power supply unit to provide the required current for the operation of the electronic equipment. For example, taking the electronic device as a PC, when the system unit of the PC is in working state, the power supply unit needs to provide current to ensure the normal operation of the system unit. The power supply unit can also supply power to the battery built into the PC, so that when no external power supply is connected to the PC, the battery can provide current to the system unit of the PC, allowing the PC to operate normally.

For example, please refer to FIG. 1 , which is a schematic structural diagram of a power supply unit 100 .

As shown in FIG. 1 , the power supply unit 100 may include a power supply chip (charger integrated circuit, charger IC) and peripheral circuits. When the power supply unit 100 is working, the external power supply can input current into the power supply unit 100 through the power interface. The charger IC in the power supply unit 100 controls the current output to the system unit and supplies power to the battery at the same time.

For example, the peripheral circuit may include three field effect transistors (MOS transistors) and one inductor. For example, as shown in Figure 1, three MOS tubes are labeled Q1, Q2 and Q3 respectively, and one inductor is labeled L1.

Among them, the drain (D) electrode of Q1 is coupled to the power interface, the source (Source, S) electrode of Q1 is coupled to the D electrode of Q2, the gate (Gate, G) electrode of Q1 is coupled to the charger IC, and Q2 The S pole is grounded, and the G pole is coupled to the charger IC. One end of L1 is coupled to the D pole of Q2, the other end of L1 is coupled to the S pole of Q3, the D pole of Q3 is coupled to the battery, the G pole of Q3 is coupled to the charger IC, and the S pole of Q3 is also coupled to the system unit. coupling.

When the power supply unit 100 is working, the charger IC can control Q1, Q2 and Q3 to be in different states (such as switching state, conduction state or cut-off state), so that Q1, Q2 and Q3 can process the current of the input power interface, In order to obtain the current that can meet the power supply requirements of the system unit and battery, it is output to the system unit and battery.

When the power supply unit 100 is working, each component included in the power supply unit 100 will generate heat, causing the temperature of the power supply unit 100 to rise. The greater the current that the power supply unit 100 needs to provide, the faster the temperature rises. At the same time, as the temperature rises, the working efficiency of the power supply unit 100 will decrease. When the temperature exceeds a certain threshold, there is a risk of damage.

In the power supply scheme shown in Figure 1, when the current required by the system unit is large, or the battery capacity is large and fast power supply is required, the power supply pressure of the power supply unit 100 will be high, and the temperature will increase faster during its operation. The ground rises. This results in problems of reduced power supply efficiency and damage to the power supply unit 100 . In this embodiment, the power supply unit may also be called a power supply device.

In order to solve the above problems, embodiments of the present application provide a power supply device and a power supply method, so that the power supply unit can effectively reduce the heat generated during the operation of the power supply unit while providing a large power supply current for electronic equipment, thereby improving the efficiency of the power supply unit. improve power supply efficiency and reduce the risk of damaging the power supply unit.

For example, the electronic device described in the embodiment of the present application may be a mobile phone, a tablet computer, a desktop, a laptop, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), or a netbook. As well as devices such as cellular phones, personal digital assistants (PDAs), augmented reality (AR)/virtual reality (VR) devices, media players, etc., the specific forms of the devices in the embodiments of the present application No special restrictions are imposed.

The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 2 , which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in Figure 2, the electronic device may include a processor 210, an external memory interface 220, an internal memory 221, a universal serial bus (USB) interface 230, a power supply device 240, a battery 241, an antenna 1, an antenna 2, a mobile Communication module 250, wireless communication module 260, audio module 270, speaker 270A, receiver 270B, microphone 270C, headphone interface 270D, sensor module 280, button 290, motor 291, indicator 292, camera 293, display screen 294, and user identification Module (subscriber identification module, SIM) card interface 295, etc. Among them, the sensor module 280 may include a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc.

It should be noted that in this embodiment of the present application, a collection of other components in the electronic device except the power supply device 240 and the battery 241 may be called a system unit.

It can be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device may include more or fewer components than illustrated, some components may be combined, some components may be separated, or components may be arranged differently. The components illustrated may be implemented in hardware, software, or a combination of software and hardware.

The processor 210 may include one or more processing units. For example, the processor 210 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), an image signal processor ( image signal processor (ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU), etc. . Among them, different processing units can be independent devices or integrated in one or more processors.

A controller can be the nerve center and command center of an electronic device. The controller can generate operation control signals based on the instruction operation code and timing signals to complete the control of fetching and executing instructions.

In some embodiments, processor 210 may include one or more interfaces. The interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuitsound, I2S) interface, a pulse code modulation (PCM) interface, and a universal asynchronous receiver (universal asynchronous receiver) /transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, subscriber identity module (subscriber identity module, SIM) interface, and/or Universal serial bus (USB) interface, etc.

Among them, the I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 210 may be coupled to the power supply device 240 through an I2C interface, so that the processor 210 interacts with the power supply device 240 through the I2C interface. For example, the processor 210 can receive information such as the input current size, the output current size, the temperature of the power supply device 240 and whether the power supply device 240 is in steady output through the I2C interface. The processor 210 can also send control information to the power supply device 240 through the I2C interface, so as to control the power supply device 240 to be in different working modes and perform efficient power supply output.

The wireless communication function of the electronic device can be realized through the antenna 1, the antenna 2, the mobile communication module 250, the wireless communication module 260, the modem processor and the baseband processor. The electronic device implements display functions through the GPU, display screen 294, and application processor. The GPU is an image processing microprocessor and is connected to the display screen 294 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 210 may include one or more GPUs that execute program instructions to generate or alter display information. The electronic device can realize the shooting function through ISP, camera 293, video codec, GPU, display screen 294 and application processor. The ISP is used to process the data fed back by the camera 293. Camera 293 is used to capture still images or video. Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. Video codecs are used to compress or decompress digital video. Electronic devices may support one or more video codecs. In this way, electronic devices can play or record videos in multiple encoding formats. NPU is a neural network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transmission mode between neurons in the human brain, it can quickly process input information and can continuously learn by itself. Intelligent cognitive applications of electronic devices can be realized through NPU, such as image recognition, face recognition, speech recognition, text understanding, etc. The external memory interface 220 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor 210 through the external memory interface 220 to implement the data storage function. Internal memory 221 may be used to store computer executable program code, which includes instructions. The processor 210 executes instructions stored in the internal memory 221 to execute various functional applications and data processing of the electronic device. The internal memory 221 may include a program storage area and a data storage area. Among them, the stored program area can store an operating system, at least one application program required for a function (such as a sound playback function, an image playback function, etc.). The storage data area can store data created during the use of electronic equipment (such as audio data, phone books, etc.). In addition, the internal memory 221 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

The electronic device can implement audio functions through the audio module 270, the speaker 270A, the receiver 270B, the microphone 270C, the headphone interface 270D, and the application processor. Speaker 270A, also called "speaker", is used to convert audio electrical signals into sound signals. The electronic device can listen to music through speaker 270A, or listen to hands-free calls. Receiver 270B, also called "earpiece", is used to convert audio electrical signals into sound signals. When the electronic device answers a call or a voice message, the voice can be heard by bringing the receiver 270B close to the human ear. Microphone 270C, also called "microphone" or "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message or needing to trigger an electronic device to perform certain functions through a voice assistant, the user can speak by approaching the microphone 270C with the human mouth and input the sound signal to the microphone 270C. The electronic device may be provided with at least one microphone 270C. In other embodiments, the electronic device may be provided with two microphones 270C, which in addition to collecting sound signals, may also implement a noise reduction function. In other embodiments, the electronic device can also be equipped with three, four or more microphones 270C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions, etc. The headphone interface 270D is used to connect wired headphones. The buttons 290 include a power button, a volume button, etc. The motor 291 can generate vibration prompts. The indicator 292 may be an indicator light, which may be used to indicate charging status, power changes, or may be used to indicate messages, missed calls, notifications, etc. The SIM card interface 295 is used to connect a SIM card. The SIM card can be inserted into the SIM card interface 295 or pulled out from the SIM card interface 295 to realize contact and separation from the electronic device. The electronic device can support 1 or N SIM card interfaces, where N is a positive integer greater than 1. SIM card interface 295 can support Nano SIM card, Micro SIM card, SIM card, etc. Multiple cards can be inserted into the same SIM card interface 295 at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 295 is also compatible with different types of SIM cards. The SIM card interface 295 is also compatible with external memory cards. Electronic devices interact with the network through SIM cards to implement functions such as calls and data communications. In some embodiments, the electronic device uses an eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the electronic device and cannot be separated from the electronic device.

The battery 241 can be used to provide power to the system unit when there is no external power supply to ensure the normal operation of the system unit. In this embodiment of the present application, the battery 241 may be a battery pack including multiple battery strings. For example, the battery 241 may be a battery pack composed of four series of batteries connected in series.

The power supply device 240 can be used to receive current provided by the external power supply when connected to the external power supply, and supply power to the system unit and the battery 241 . In this embodiment of the present application, the power supply device 240 may be a unit with a power supply function included in the above-mentioned electronic device.

For example, please refer to FIG. 3 , which is a schematic structural diagram of a power supply device provided by an embodiment of the present application. The power supply device may include a power interface, a first power supply unit and a second power supply unit. Wherein, the first power supply unit includes a first control unit and a first switch unit. The second power supply unit includes a second control unit and a second switch unit.

As shown in Figure 3, the power interface can be coupled to the first end of the first switch unit (such as end A). The first end of the first switch unit is also coupled to the system unit. The second end of the first switch unit (eg, end A) For example, terminal B) is coupled to the battery, and a third terminal (such as terminal C) of the first switch unit is coupled to the first control unit.

The power interface is also coupled to the first terminal (such as D terminal) of the second switch unit, the second terminal (such as E terminal) of the second switch unit is coupled to the battery, and the third terminal (such as F terminal) of the second switch unit ) is coupled to the second control unit.

In the structure shown in Figure 3, in some embodiments, the first power supply unit can power the system unit and the battery, while the second power supply unit powers the battery. In some other embodiments, the first power supply unit may only power the battery while the second power supply unit supplies power to the battery. For example, when the power interface is coupled to an external power supply, the first control unit controls the first switch unit to be turned on, the first power supply unit supplies power to the system unit and the battery at the same time, and the second control unit controls the second switch unit to be turned on, The second power supply unit supplies power to the battery. When the power interface is coupled to an external power supply, the first control unit controls the first switch unit to turn off, and the first power supply unit only supplies power to the system unit. At the same time, the second control unit controls the second switch unit to turn on, and the second power supply unit supplies power to the battery. .

In some embodiments, the first control unit and the second control unit may be power supply chips, such as chargerICs. The first switching unit and the second switching unit may be transistors. For example, the transistor may be a P-channel field effect transistor, that is, a PMOS transistor.

In the power supply device shown in Figure 3, two power supply units are provided to share the power supply pressure, so that neither of the two power supply units will have the problem of excessive power supply pressure. Therefore, there will be no high temperature effects caused by excessive power supply pressure, and the power supply efficiency will be improved.

In some embodiments, the first power supply unit may further include a first adaptation unit disposed between the power interface and the first switch unit, and the second power supply unit may further include a first adapter unit disposed between the power interface and the second switch unit. The second adaptation unit. As shown in Figure 4, for example, the first end of the first adapter unit is coupled to the power interface, the second end of the first adapter unit is coupled to the first end of the first switch unit, and the first end of the first adapter unit is coupled to the first end of the switch unit. The control end is coupled to the first control unit. When the power interface is coupled to an external power supply, the first adaptation unit can adapt the current input by the external power supply and output it under the control of the first control unit. In order to enable the first power supply unit to meet the power supply requirements of the system unit and the battery through current adaptation processing. For another example, the first end of the second adaptation unit is coupled to the power interface, the second end of the second adaptation unit is coupled to the first end of the second switch unit, and the control end of the second adaptation unit is coupled to the second The control unit is coupled. When the power interface is coupled to an external power supply, the second adaptation unit can adapt the current input by the external power supply and output it under the control of the second control unit. In order to enable the second power supply unit to meet the power supply requirements of the battery through current adaptation processing.

In this embodiment of the present application, the first adaptation unit may include a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4 and a first inductor L1. The second adaptation unit may include a fifth transistor Q5, a sixth transistor Q6, a seventh transistor Q7, an eighth transistor Q8 and a second inductor L2. In some embodiments, the transistors Q1-Q8 may all be MOS transistors, for example, Q1-Q8 may all be NMOS transistors.

For example, please refer to Figure 5. The first switching unit is the transistor Q9, the second switching unit is the transistor Q10, the first control unit is the first power supply chip (i.e., charger IC 1), and the second control unit is the second power supply chip. The chip (i.e. charger IC 2), the transistors Q1-Q8 and the transistors Q9 and Q10 are all MOS tubes for illustration.

As shown in Figure 5, in the first adaptation unit, the first terminal of Q1 (such as D pole) can be used as the first terminal of the first adaptation unit and coupled with the power interface, and the second terminal of Q1 (such as S pole) is coupled to the D pole of Q2, the S pole of Q2 is grounded, the D pole of Q2 is coupled to one end of L1, the other end of L1 is also coupled to the D pole of Q3, the S pole of Q3 is grounded, and the D pole of Q3 It is also coupled with the S pole of Q4, and the D pole of Q4 can be used as the second terminal of the first adaptation unit and coupled with the S pole of Q9. In addition, the G poles of Q1, Q2, Q3 and Q4 may constitute a control terminal of the first adaptation unit coupled to the charger IC 1.

Similarly, in the second adaptation unit, the D pole of Q5 can be used as the first end of the second adaptation unit, coupled to the power interface, the S pole of Q5 is coupled to the D pole of Q6, and the S pole of Q6 The D pole of Q6 is coupled to one end of L2, the other end of L2 is also coupled to the D pole of Q7, the S pole of Q7 is grounded, the D pole of Q7 is also coupled to the S pole of Q8, and the D pole of Q8 It can be used as the second end of the second adaptation unit and is coupled to the S pole of Q9. In addition, the G poles of Q5, Q6, Q7 and Q8 may constitute the control terminal of the second adaptation unit and be connected to the charger IC 2.

Among them, Q1, Q2 and L1 can form a boost circuit to adapt the voltage boost to the current connected to the power interface. L1, Q3 and Q4 can form a step-down circuit to adapt the voltage step-down to the current on the path. Similarly, Q5, Q6 and L2 can also form a boost circuit to adapt the voltage to the current connected to the power interface. L2, Q7 and Q8 can form a step-down circuit to perform adaptive processing to step down the current on the path. For example, when current passes through a transistor, pulse width modulation (PWM) waves with different characteristics can be generated, and in conjunction with an inductor, current adaptation can be achieved. For example, charger IC 1 can control Q1 and Q4 to be in the on state, and control Q2 and Q3 to be in the off state. At this time, it can be realized that the adapted current can satisfy the power supply of the first power supply unit to only the system unit. For another example, charger IC 1 can control Q1, Q2, Q3 and Q4 to be in a switching state. At this time, it can be realized that the adapted current can satisfy the first power supply unit to supply power to the system unit and the battery at the same time. For another example, charger IC2 can control Q5, Q6, Q7 and Q8 to be in a switching state. At this time, it can be realized that the adapted current can satisfy the power supply of the battery by the second power supply unit.

In the power supply device as shown in Figure 5, even if the current connected through the power interface cannot directly power the system unit or battery, it can still be adapted and adjusted through the adaptation units in the first power supply unit and the second power supply unit. This enables the power supply device to meet the power supply needs of the system unit and battery regardless of whether the input current can directly supply power.

In some embodiments of the present application, the power supply device as shown in Figure 3 or Figure 4 or Figure 5 may also include other components to further ensure the normal operation of the power supply device.

In the following, the first switch unit, the second switch unit, the first control unit and the second control unit in the power supply device are the components shown in Figure 5. At the same time, the power supply device also includes a first adaptation unit as shown in Figure 5. Take the second adaptation unit as an example for description.

Please refer to Figure 6. The first power supply unit may also include a capacitor C1, a resistor R1, a capacitor C2, a resistor R2 and a capacitor C5. The second power supply unit may also include a capacitor C3, a resistor R3, a capacitor C4 and a resistor R4.

In the first power supply unit, one end of C1 is coupled to the power interface, the other end of C1 is grounded, one end of C2 is coupled to the D pole of Q1, and the other end of C2 is grounded. C1 and C2 can be used to rectify the current connected to the power interface to prevent damage to the first power supply unit when the current fluctuates greatly.

R1 can be connected in series between the power interface and the D pole of Q1, such as between C1 and C2. When the first power supply unit is working, the voltage across R1 can be sampled and the voltage value is fed back to the system unit. Then the system unit can combine the resistance value of R1 to learn the current level connected to the first power supply unit through the power interface, so that the system unit can adjust the power supply strategy of the power supply device according to the input current level (for details, please refer to the embodiment shown in Figure 8 below (detailed description of the corresponding content in ) to improve the power supply efficiency of the power supply device.

R2 can be connected in series between the battery and the D pole of Q9. Charger IC 1 can sample the voltage across R2 and feed the voltage value back to the system unit. Then the system unit can combine the resistance value of R2 to know the output current of the battery, and then know the remaining power (Relative State of Charge, RSOC) of the battery, so that the system unit can adjust the power supply strategy of the power supply device according to the RSOC of the battery (for details, see The following is a detailed description of the corresponding content in the embodiment shown in Figure 8) to improve the power supply efficiency of the power supply device.

In addition, the first power supply unit may also include a capacitor C5, one end of the capacitor C5 is coupled to the S pole of Q9, and the other end of the capacitor C5 is grounded. C5 is set to rectify the current output by the first power supply unit to the system unit, so as to protect the system unit from being affected when the output current of the first power supply unit fluctuates.

As shown in Figure 6, the capacitors (such as C3 and C4) and resistors (such as R3 and R4) included in the second power supply unit are coupled in a similar manner to the capacitors and resistors in the first power supply unit, and their functions are also similar to those in the first power supply unit. The capacitors and resistors in the power supply unit are the same and will not be described again here.

It should be noted that, as shown in Figure 6, the first power supply chip (i.e., charger IC 1) and the second power supply chip (i.e., charger IC 2) can also be coupled to the system unit (such as the processor in the system unit) through the I2C interface. to interact with system units. For example, after the output voltage of the first power supply unit is stable, the charger IC 1 can send a "voltage stable output" signal (such as a high-level signal) to the system unit, so that the system unit knows that the voltage of the first power supply unit has been stably output. . When the first power supply unit is overheated, the charger IC 1 can send an "overheat" signal (such as a low level signal) to the system unit, so that the system unit knows that the first power supply unit is overheated. Charger IC 1 and charger IC 2 can also feedback the output current of the power supply device to the system unit through the I2C interface, so that the system unit knows the power supply capability of the power supply device at the current moment. In addition, the system unit can also send control information to charger IC 1 and/or charger IC2 through the I2C interface in order to set the power supply parameters and mode of the power supply device.

For example, please refer to Figure 7. Both the first power supply chip (ie, charger IC 1) and the second power supply chip (ie, charger IC 2) may include multiple ports to implement interaction with the system unit. The following is an example description of the role of each port.

In the charger IC 1, some ports can be used to control the first adaptation unit and collect electrical signals in the first adaptation unit. For example, the ACN port and the ACP port are coupled to two ends of the resistor R1 respectively, and are used to sample the voltage across the resistor R1 in order to determine the current situation of the input power supply device. The VBUS_IN port is coupled to the D pole of Q1 and is used to sample the voltage of the input power supply device. The HIDRV 1 port is coupled to the G pole of Q1 and is used to control the working status of Q1. The L0 DRV 1 port is coupled to the G pole of Q2 and is used to control the working status of Q2. The SW 1 port and the SW 2 port are respectively coupled to both ends of the inductor L1 and are used to sample the voltage across the inductor L1. The L0 DRV 2 port is coupled to the G pole of Q3 and is used to control the working status of Q3. The HIDRV 2 port is coupled to the G pole of Q4 and is used to control the working status of Q4. The SYS port is coupled to the system unit and used to output current to the system unit. The BATDRV port is coupled to the G pole of Q9 and is used to control the working status of Q9. The SRP port and the SRN port are respectively coupled to both ends of the resistor R2 and are used to sample the voltage across the resistor R2 in order to determine the power level in the battery.

In charger IC 1, it also includes PSYS port, ACOK port, IBAT port, IADPT port, I2C_D port, I2C_C port, ILIM_HIZ port and PROCHOT port. These ports can be respectively coupled to the system unit through the I2C bus for communicating with the system unit. For example, the PSYS port can be used to feed back the size of the output current of the first power supply unit to the system unit. The ACOK port can be used to send a high-level signal to the system unit after the output voltage of the first power supply unit is stable, so that the system unit knows that the output voltage of the first power supply unit has stabilized. The IBAT port can be used to feedback the battery discharge current to the system unit. The IADPT port may be used to feed back the current level of the first power supply unit to the system unit. The I2C_C port and the I2C_D port can be used to receive the control signal sent by the system unit in order to modify the power supply parameters of the charger IC 1 according to the control signal. The ILIM_HIZ port can be used to receive a control signal sent by the system unit, so as to control the first power supply unit module to enter different power supply modes (such as BB or PTM mode) according to the control signal. The PROCHOT port can be used to send a low-level signal to the system unit when the first power supply unit is overheated, so that the system unit knows that the first power supply unit is overheated.

As shown in Figure 7, charger IC 2 may also include ports similar to charger IC 1, and their functions also correspond to the functions of the ports in charger IC 1. The difference is that since the second power supply unit can only supply power to the battery, its various parameters do not need to be fed back to the system unit. Therefore, the PROCHOT port, ACOK port, IBAT port and IADPT port in charger IC 2 do not need to be connected to the system unit. . In addition, the PSYS port of the charger IC 2 can be connected to the PSYS port of the charger IC 1 so that the system unit can know the sum of the currents that the first power supply unit and the second power supply unit can output.

It should be noted that in other embodiments of the present application, before the external power supply inputs the current into the power interface, the current provided by the external power supply can also be rectified through the power adapter to reduce the fluctuation or voltage of the external power supply. The impact of excessive voltage on the power supply device.

The power supply method provided by the embodiment of the present application can be applied to any power supply device as shown in Figure 3, Figure 4, Figure 5, Figure 6 or Figure 7. Based on this power supply method, the power supply device can effectively reduce the heat generated by the power supply device while providing a large power supply current for electronic equipment, thereby improving the power supply efficiency of the power supply device and reducing the risk of damaging the power supply device.

In order to more clearly explain the power supply method provided by the embodiment of the present application, the electronic device is taken as a PC in the following, and the power supply device included therein is the power supply device as shown in Figure 7. The external power supply is connected to the power interface through the power adapter, and the battery included in the PC A battery pack composed of multiple batteries connected in series is used as an example for explanation. As shown in Figure 8, the method may include S801-S803.

S801. The power interface is coupled to the external power supply, and the system unit controls the first power supply unit and the second power supply unit to start working.

When the power interface is connected to an external power supply, current can be connected to the power supply device through the power interface. The processor in the system unit can start the power supply device to start working. For example, the processor can start the first power supply unit and the second power supply unit to start charging the dual charger IC.

S802. The system unit detects the remaining power of the battery pack.

The remaining capacity (RSOC) of the battery pack in the PC will affect the current demand of the battery pack. Therefore, in order to control the power supply device for effective power output, the processor of the system unit can determine the remaining capacity of the battery pack when starting the power supply device. Perform testing. Among them, the system unit can sample the voltage of the corresponding device in the power supply device, and calculate and obtain the RSOC of the battery pack based on the sampled voltage, the electrical properties (such as resistance) of the device, and the electrical properties of the battery pack.

For example, as shown in Figure 7, the power supply device can sample the voltage across the two resistors R2 and R4, and send the four voltage sampling values obtained by sampling to the processor. Then the processor can determine the current on the path where R2 is located based on the voltage across R2 and the resistance of R2. Similarly, the processor can also determine the amount of current on the path where R4 is located. Since the current of the battery pack is equal to the sum of the current on the path where R2 is located and the current on the path where R4 is located, the processor can determine the current flowing through the battery pack based on the current on the path where R2 is located and the current on the path where R4 is located. Combined with the equivalent resistance of the battery pack, the RSOC of the battery pack can be determined through calculation.

S803. The system unit controls the power supply device to supply power to the system unit and the battery pack in a corresponding power supply mode according to the remaining power of the battery pack.

In the embodiment of the present application, the power supply mode of the power supply device may include trickle charging mode (Pre/WakeupCharge), fast charging mode (Fast Charge), terminated charging mode (Terminated Charge), pass-through and switching charging mode (PTM+BuckBoost Charge) And full charge mode. Exemplary descriptions of the above power supply modes will be reflected in the following description.

For example, the processor of the system unit can control the power supply device to operate in different power supply modes by controlling the working mode of the first power supply unit, the working mode of the second power supply unit, and the power supply parameters of the power supply device.

The working modes of the power supply unit (such as the first power supply unit or the second power supply unit) may include: Pass Through Mode (PTM) mode, BuckBust (BB) mode. For example, with reference to FIG. 5 , when the first power supply unit is in Pass Through Mode (PTM) mode, Q1 and Q4 in the first power supply unit are in the on state and Q2 and Q3 are in the off state. For another example, when the first power supply unit is in the BuckBust (BB) mode, Q1, Q2, Q3 and Q4 in the first power supply unit are in the switching state. For another example, when the second power supply unit is in the BB mode, Q5, Q6, Q7 and Q8 in the second power supply unit are in the switching state.

Please refer to Figure 9. The power supply parameters of the power supply device include the input current limit parameter I _lim1 of the first power supply unit, the output current limit parameter I _chg1 of the first power supply unit, the input current limit parameter I _lim2 of the second power supply unit and the second The output current limiting parameter I _chg2 of the power supply unit, the unit of current is Ampere (A) as an example. The above-mentioned S803 may specifically include S901-S904.

S901. When the RSOC of the battery pack is less than the first threshold, or the RSOC of the battery pack cannot be detected, the system unit controls the power supply device to operate in the trickle charging mode.

When the RSOC in the battery pack is low, for example, when the RSOC in the battery pack is less than a first threshold (for example, the first threshold may be 0%), for the protection of the battery pack, the battery pack cannot be quickly charged with a large current. At this time, the processor of the system unit can control the power supply device to work in trickle charging mode.

For example, the processor can control the power supply device to work in the trickle charging mode through the following method: control the first power supply unit to work in the first mode (such as PTM mode), and the second power supply unit to work in the second mode (such as BB mode), The first power supply unit only supplies power to the system unit, and the second power supply unit supplies power to the battery pack. At the same time, the power supply parameter of the power supply device is set as the first parameter, and the first parameter satisfies the following formula (1-1), formula (1-2) and formula (1-3).

I _chg2 =0.128...Formula (1-1),

I _lim2 ＝0.128*V _bat /(a*x)......Formula (1-2),

I _lim1 =b*yI _lim2 ...Formula (1-3).

Among them, V _bat is the charging voltage of the battery pack, a is the power supply efficiency of the second power supply unit, x is the rated output voltage of the power adapter, b is the safety factor, and y is the rated output current of the power adapter. For example, V _bat can be calculated according to V _bat =c*4, where c is the number of strings in the battery pack.

S902. When the remaining power of the battery pack is greater than the first threshold and less than the second threshold, the system unit controls the power supply device to operate in the fast charging mode.

When there is a certain amount of electricity stored in the battery pack (for example, the RSOC of the battery pack is greater than the first threshold (for example, the first threshold is 0%) and less than the second threshold (for example, the second threshold is 90%)), it can be Performs fast charging to fully charge the battery pack in a short time. At this time, the processor of the system unit can control the power supply device to work in fast charging mode.

For example, the processor can control the power supply device to work in the fast charging mode through the following method: control the first power supply unit to work in the third mode (such as BB mode), and the second power supply unit to work in the second mode (such as BB mode), so that The first power supply unit supplies power to the system unit and the battery pack at the same time, and the second power supply unit supplies power to the battery pack. At the same time, the power supply parameters of the first power supply unit and the second power supply unit are set as the second parameter. The second parameter satisfies the following formula (2-1), formula (2-2), formula (2-3) and formula (2- 4).

I _lim2 ＝I _chg2 *V _bat /(a*x)......Formula (2-1),

I _chg2 =1/3*I _chg ...Formula (2-2),

I _lim1 =b*yI _lim2 ...Formula (2-3),

I _chg1 =2/3*I _chg ...Formula (2-4).

Among them, I _chg is the maximum charging current of the battery pack.

It should be noted that when the power supply device works in the fast charging mode, since the first power supply device needs to supply power to the system unit and the battery at the same time, in the exemplary explanation of the above formulas (2-2) and (2-4) , I _chg1 is set to twice the value of I _chg2 . In the embodiment of the present application, I _chg1 and I _chg2 can also be set to other size relationships. For example, the second parameter can be set to satisfy I _chg2 =1/4*I _chg1 =1/5*I _chg . During the specific implementation of the embodiments of the present application, the relationship between the output current of the first power supply unit and the output current of the second power supply unit can be flexibly set based on the actual situation. The embodiments of the present application are not limited here.

S903. When the remaining power of the battery is greater than the second threshold and the battery is not fully charged, the system unit controls the power supply device to operate in the termination charging mode.

When the RSOC of the battery is greater than the second threshold (for example, the second threshold is 90%) and the battery is not fully charged, the battery is close to being fully charged and there is no need to fast charge the battery. At this time, the processor of the system unit can control the power supply device to work in the termination charging mode.

For example, the processor can control the power supply device to work in the charging termination mode through the following method: control the first power supply unit to work in a first mode (such as PTM mode), and the second power supply unit to work in a second mode (such as BB mode), so that The first power supply unit supplies power to the system unit, and the second power supply unit supplies power to the battery pack. At the same time, the power supply parameters of the first power supply unit and the second power supply unit are set as third parameters, and the third parameters satisfy the following formula (3-1), formula (3-2) and formula (3-3).

I _chg2 =0.5...Formula (3-1),

I _lim2 ＝0.5*V _bat /(a*x)......Formula (3-2),

I _lim1 =b*yI _lim2 ...Formula (3-3).

S904. When the battery is fully charged, the system unit controls the power supply device to work in the full power mode.

When the battery is fully charged, there is no need to continue supplying power to the battery pack. At this time, the processor of the system unit can control the power supply device to work in full power mode.

For example, the processor can control the power supply device to work in the full power mode through the following method: control the first power supply unit to work in the first mode (such as PTM mode), and control the second power supply unit. At the same time, the power supply parameters of the first power supply unit and the second power supply unit are set to satisfy the following formula (4-1), formula (4-2) and formula (4-3).

I _chg2 =0...Formula (4-1),

I _lim2 =0...Formula (4-2),

I _lim1 =y...Formula (4-3).

It can be understood that when the input power is constant, the total current that the power supply device can output is also constant. If the battery pack is quickly charged, the power supply device needs to output a larger current to the battery pack, and the current output to the system unit will also decrease accordingly. If the current required by the system unit is relatively large at this time, there will be a problem of insufficient power supply for the system unit. Therefore, in some implementations of the embodiments of the present application, the processor of the system unit can detect the system status and the load condition of the system unit, and control the working mode of the power supply device according to the detection results, so as to ensure the normal operation of the system unit while achieving Quick charging of battery packs.

The system state may include a sleep state (or called S3 state), a shutdown state (or called S5 state), and a power-on state (or called S0 state). When the system state is in S0 state, the system unit is in normal working state, and its load conditions can include light load and heavy load. When the system unit's load state is heavy load, the current demand is greater than when the system unit's load state is light load. The demand for current. For example, when the current required by the system unit is greater than 70% of the maximum current that the power supply device can provide, the current load condition is considered to be heavy load. When the current required by the system unit is less than 70% of the maximum current that the power supply device can provide, the current load condition is considered to be light load.

For example, please refer to FIG. 10 , which shows a schematic flowchart of a power supply method for controlling a power supply unit to perform power output based on the system status and the load condition of the system unit. The process in this power supply method is similar to the process shown in Figure 9, and the differences between the two are exemplified below.

As shown in Figure 10, after executing S802, when the RSOC of the battery pack is greater than the first threshold and less than the second threshold, the processor of the system unit can detect the system status and control the power supply device to work in different modes according to the detection results. Perform power output. The process may include S1001-S1005.

S1001. When the RSOC of the battery pack is greater than the first threshold and less than the second threshold, the system unit detects the system status.

For example, the detection of the system status may be completed by the processor in the system unit.

S1002. The system unit determines that the system status is the power-on status.

It can be understood that when the system status is powered on, most components of the system unit are in normal working status, and their demand for power supply current may be larger or smaller. In this embodiment of the present application, when the system state is in the powered-on state, the processor of the system unit may execute the following S1003 to determine the amount of current that needs to be output to the system unit.

When the system state is in a shutdown state or a sleep state, most components of the system unit are also in a non-working or sleep state, and their demand for power supply current is very small. Then the processor can control the power supply device to enter the fast charging mode according to the method shown in Figure 9. The method by which the processor controls the power supply device to enter the fast charging mode is similar to the description in S902 above, and will not be described again here.

S1003. The system unit obtains the load status of the system unit at the current moment.

S1004. When the load state of the system unit is light load, the system unit controls the power supply device to work in the fast charging mode.

When the load status of the system unit is light load, it means that the normal operation of the system unit does not require a large power supply current. At this time, the processor of the system unit can control the power supply device to work in the fast charging mode, so that the power supply device can provide a larger power supply current for the battery pack and charge it quickly. The method by which the processor controls the power supply device to operate in the fast charging mode is similar to S902 shown in FIG. 9 and will not be described again here.

S1005. When the load status of the system unit is heavy load, the system unit controls the power supply device to work in the pass-through and switching charging modes.

When the load status of the system unit is heavy load, it indicates that the normal operation of the system unit requires a larger power supply current. In the embodiment of the present application, although the RSOC of the battery can support fast charging, in order to ensure the normal operation of the system unit, the power supply device needs to give priority to the system unit for power output.

For example, the processor of the system unit can control the power supply device to operate in pass-through and switching charging modes.

For example, the processor can control the first power supply unit to work in a first mode (such as PTM mode), and the second power supply unit to work in a second mode (such as BB mode), so that the first power supply unit supplies power to the system unit, and the second power supply unit Power the battery pack. At the same time, the processor can set the power supply parameters of the first power supply unit and the second power supply unit as the fourth parameter, and the fourth parameter satisfies the following formula (5-1), formula (5-2) and formula (5-3).

I _chg2 =t...Formula (5-1),

I _lim2 =t*V _bat /(a*x)...Formula (5-2),

I _lim1 = b*yI _lim2 ...Formula (5-3).

Among them, t is the preset output current of the battery pack. In some embodiments, the parameter t may also be a user-defined parameter.

In order to explain the settings of the above different power supply modes more clearly, the following assumes that the maximum charging current I _chg of the battery is 6.67A, the number of battery strings c is 2 strings, the power adapter output rated voltage x is 20V, and the power adapter output rated current y is 3.25A, the power supply efficiency a of the second power supply unit is 0.94, the safety factor b is 0.97, and t is set to 128mA as an example.

When the processor controls the power supply device to work in the trickle charging mode, according to formulas (1-1), (1-2) and (1-3), the power supply parameter of the power supply device can be set as the first parameter:

I _chg2 =128mA,

I _lim2 ＝0.128*V _bat /(a*x)＝0.128*2*4/(0.94*20)＝54.5mA,

_Ilim1 =b* _yIlim2 =0.97*3.25-0.0545=3.1A.

When the processor controls the power supply device to work in the fast charging mode, according to formulas (2-1), (2-2), (2-3) and (2-4), the power supply parameters of the power supply device can be set to the first Two parameters:

I _chg2 =1/3*I _chg =2.22A,

I _lim2 ＝I _chg2 *V _bat /(a*x)＝0.95A,

I _lim1 = b*yI _lim2 = 2.2A,

I _chg1 =2/3*I _chg =4.45A.

When the processor controls the power supply device to work in the termination charging mode, according to formulas (3-1), (3-2) and (3-3), the power supply parameter of the power supply device can be set as the third parameter:

I _chg2 =500mA

_Ilim2 ＝0.5*V _bat /(a*x)＝0.5*8/(0.94*20)＝0.21A

_Ilim1 ＝b* _yIlim2 ＝0.97*3.25-0.21＝2.94A

When the processor controls the power supply device to work in full power mode, according to formulas (4-1), (4-2) and (4-3), the power supply parameters of the power supply device can be set as:

I _chg2 = 0,

I _lim2 = 0,

I _lim1 =y=3.25A.

When the processor controls the power supply device to work in the pass-through and switching charging modes, according to formulas (5-1), (5-2) and (5-3), the power supply parameter of the power supply device can be set as the fourth parameter:

I _chg2 =128mA,

I _lim2 ＝0.128*V _bat /(a*x)＝0.128*2*4/(0.94*20)＝54.5mA,

_Ilim1 =b* _yIlim2 =0.97*3.25-0.0545=3.1A.

It should be noted that in the method shown in FIG. 10 above, the system status detection is performed after determining that the RSOC of the battery pack is greater than the first threshold and less than the second threshold. In the embodiment of the present application, the system status can also be detected first, and after the system status is determined, the RSOC of the battery pack is detected, and the power supply device is controlled to operate in different modes for power supply output based on the above two detection results.

For example, please refer to Figure 11, taking the first threshold as 0% and the second threshold as 90% as an example for explanation. As shown in Figure 11, the method may include S1101-S1112.

S1101. When the power interface is connected to the external power supply, the system unit starts the power supply device to start supplying power.

S1102. The system unit detects the system status.

When the system state is in sleep state or shutdown state, perform the following S1103-S1107. When the system status is powered on, execute the following S1108-S1112.

S1103. The system unit detects the RSOC of the battery.

When RSOC<0%, or RSOC cannot be detected, the following S1104 is executed. When 0%<RSOC<90%, the following S1105 is executed. When 90%<RSOC<100%, the following S1106 is executed. When RSOC=100%, the following S1107 is executed.

S1104. The system unit controls the power supply device to work in fast charging mode.

S1105. The system unit controls the power supply device to work in fast charging mode.

S1106. The system unit controls the power supply device to work in the charging termination mode.

S1107. The system unit controls the power supply device to work in full power mode.

S1108. The system unit detects the RSOC of the battery.

When RSOC<0%, or RSOC cannot be detected, perform the following S1109. When 0%<RSOC<90%, the following S1110 is executed. When 90%<RSOC<100%, the following S1111 is executed. When RSOC=100%, the following S1112 is executed.

S1109. The system unit controls the power supply device to work in fast charging mode.

S1110. The system unit obtains the load status.

When the load state is light load, the system unit controls the power supply device to operate in the fast charging mode (ie, execute S1110a). When the load status is heavy load, the system unit controls the power supply device to operate in the pass-through and switching charging modes (ie, execute S1110b).

S1111. The system unit controls the power supply device to work in the charging termination mode.

S1112. The system unit controls the power supply device to work in full power mode.

It should be noted that, based on the power supply methods shown in Figures 8, 9, 10 and 11 above, during the operation of the power supply device, the processor of the system unit can detect the RSOC of the battery pack multiple times. , to achieve real-time control of the working mode of the power supply device.

For example, please refer to FIG. 12 and take the power supply method shown in FIG. 9 as an example for description.

As shown in FIG. 12 , after performing S901 so that the power supply device operates in the trickle charging mode, S1201 may be performed. That is, the system unit detects the remaining power of the battery pack. When the power supply device is working in the trickle charging mode, the RSOC of the battery pack will gradually increase due to the power supplied to the battery pack. For example, the RSOC of the battery pack gradually rises until it can be detected or reaches a first threshold (for example, the first threshold is 0%). When the processor detects that the RSOC of the battery pack is greater than or equal to the first threshold, S902 may be executed. That is, when the remaining power of the battery pack is greater than the first threshold and less than the second threshold, the system unit controls the power supply device to operate in the fast charging mode. In this way, after the power supply device operates in the trickle charging mode, as the RSOC of the battery pack increases, the power supply mode is switched from the trickle charging mode to the fast charging mode.

It should be noted that in the embodiment of the present application, when the processor controls the power supply device to operate in the trickle charging mode for a period of time, if the RSOC of the battery is still less than the first threshold or the power cannot be detected, it indicates that the battery has been damaged. (dead battery). In the embodiment of the present application, the processor can control the power supply device to stop the second power supply unit and switch to a state where only the first power supply unit is working for power output.

Similarly, after the power supply device operates in the fast charging mode, for example, when the first power supply unit and the second power supply unit start to operate, and the RSOC of the battery pack is greater than the first threshold and less than the second threshold, the system unit controls the power supply device directly. Enter the fast charging mode. For example, after the power supply device operates in the trickle charging mode for a period of time, and the RSOC of the battery pack is greater than the first threshold and less than the second threshold, the system unit controls the power supply mode of the power supply device to switch from the trickle charging mode. to fast charging mode. The system unit can continue to execute S1202. That is, the system unit detects the remaining power of the battery pack. When the power supply device is working in the fast charging mode, the RSOC of the battery pack will gradually increase due to the power supplied to the battery pack. For example, the RSOC of the battery pack will gradually rise to be greater than or equal to the second threshold (for example, the second threshold is 90%) within the range from the first threshold to the second threshold. When the processor detects that the RSOC of the battery pack is greater than or equal to the second threshold, S903 may be executed. That is, when the remaining power of the battery is greater than the second threshold and the battery is not fully charged, the system unit controls the power supply device to operate in the termination charging mode. In this way, after the power supply device operates in the fast charging mode, as the RSOC of the battery pack rises, the power supply mode is switched from the fast charging mode to the terminated charging mode.

After the power supply device operates in the termination charging mode, for example, when the first power supply unit and the second power supply unit start to operate, and the RSOC of the battery pack is greater than the second threshold and is not fully charged, the system unit controls the power supply device to directly enter the termination charging mode. For another example, after the power supply device operates in the fast charging mode for a period of time and the RSOC of the battery pack is greater than the second threshold and is not fully charged, the system unit controls the power supply mode of the power supply device to switch from the fast charging mode to the terminated charging mode. The system unit can continue to execute S1203. That is, the system unit detects the remaining power of the battery pack. When the power supply device is working in the charging termination mode, the RSOC of the battery pack will gradually increase due to the power supplied to the battery pack. For example, the RSOC of the battery pack will gradually increase until it reaches full power (ie, RSOC=100%) within the range from the second threshold to full power. When the processor detects that the RSOC of the battery pack=100%, S904 can be executed. That is, when the battery is fully charged, the system unit controls the power supply device to operate in the full power mode. In this way, after the power supply device operates in the termination charging mode, as the RSOC of the battery pack rises, the power supply mode is switched from the termination charging mode to the full power mode.

Similarly, with reference to the embodiment shown in FIG. 10 or FIG. 11 , when the power supply device is operating in the pass-through and switching charging modes, the system unit can also continue to detect the remaining power of the battery. When the remaining power of the battery is greater than the second threshold, the system unit controls the power supply device to switch from the pass-through and switch charging modes to the termination charging mode.

As a result, the system unit can control the switching of the power supply device in different power supply modes as the RSOC of the battery pack changes. This enables the power supply device to flexibly and efficiently provide power output for different power supply needs.

In addition, in some embodiments of the present application, the system unit may determine that the power adapter unit and the cable coupling the power adapter unit and the power interface meet the preset requirements before controlling the first power supply unit and the second power supply unit to start working. Standard, this preset standard is used to indicate that the power adapter unit and cable can support the operation of the first power supply unit and the second power supply unit, such as dual charger IC charging. For example, the preset standard may be that the power adapter unit is a standard power adapter unit and the cable is a standard cable. When the processor determines that the power adapter unit or cable does not meet the preset standards, it indicates that the power adapter unit and cable do not support dual charger IC charging, and the processor can independently turn on the first power supply unit for power output.

Based on this solution, by setting up the second power supply unit, the power supply pressure of the first power supply unit on the battery is reasonably shared, so that the first power supply unit will not work under a higher load for a long time. On the premise of ensuring that the power supply device does not affect the power supply of the system unit and the battery, the heat generated by the power supply device is reduced, thereby improving the working efficiency of the entire power supply device and reducing the risk of damage to the power supply device.

Furthermore, the processor controls the power supply unit to work in different charging modes according to the system status and the remaining power in the battery, achieving matching of power supply output for different charging scenarios, so that the power supply device can perform power supply output more efficiently. .

Figure 13 shows a schematic diagram of the composition of a chip system 1300. The chip system 1300 may include: a processor 1301 and a communication interface 1302, used to support the power supply device to implement the functions involved in the above embodiments. In one possible design, the chip system 1300 also includes a memory for storing necessary program instructions and data for the terminal. The chip system 1300 may be composed of chips, or may include chips and other discrete devices.

Through the above description of the embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be allocated as needed. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be The combination can either be integrated into another device, or some features can be omitted, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated. The components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application are essentially or contribute to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium , including several instructions to cause a device (which can be a microcontroller, a chip, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be covered by the protection scope of the present application. . Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (24)

1. An electronic device comprising a power supply device, a battery, and a system unit, the power supply device comprising: the power supply interface, the first power supply unit and the second power supply unit;

the first power supply unit comprises a first switch unit and a first control unit, and the second power supply unit comprises a second switch unit and a second control unit;

the power interface is coupled with a first end of the first switch unit, the first end of the first switch unit is also coupled with the system unit, a second end of the first switch unit is coupled with the battery, and a third end of the first switch unit is coupled with the first control unit;

the power interface is further coupled with a first end of the second switch unit, a second end of the second switch unit is coupled with the battery, and a third end of the second switch unit is coupled with the second control unit;

The first control unit is used for controlling the first switch unit to be turned on or turned off, and the second control unit is used for controlling the second switch unit to be turned on or turned off;

when the power interface is coupled with an external power supply, the first power supply unit supplies power to the system unit and the battery in response to the first control unit controlling the first switch unit to be turned on, and the second power supply unit supplies power to the battery in response to the second control unit controlling the second switch unit to be turned on;

when the power interface is coupled with the external power supply, the first control unit is used for controlling the first switch unit to cut off, the first power supply unit is used for supplying power to the system unit, the first power supply unit is used for not supplying power to the battery, the second control unit is used for controlling the second switch unit to be conducted, and the second power supply unit is used for supplying power to the battery.

2. The electronic device of claim 1, wherein the first power supply unit further comprises: a first adapting unit, a first end of which is coupled with the power interface, a second end of which is coupled with the first end of the first switch unit, and a control end of which is coupled with the first control unit;

When the power interface is coupled with the external power supply, the first adapting unit adapts and outputs the current input by the external power supply under the control of the first control unit.

3. The electronic device of claim 2, wherein the first adaptation unit comprises a first transistor, a second transistor, a first inductance, a third transistor, and a fourth transistor;

the first end of the first transistor is the first end of the first adapting unit, is coupled with the power interface, the second end of the first transistor is coupled with the first end of the second transistor, the second end of the second transistor is grounded, the first end of the second transistor is also coupled with one end of the first inductor, the other end of the first inductor is coupled with the first end of the third transistor, the second end of the third transistor is grounded, the first end of the third transistor is also coupled with the second end of the fourth transistor, and the first end of the fourth transistor is the second end of the first adapting unit and is coupled with the first end of the first switching unit;

the third end of the first transistor, the third end of the second transistor and the third end of the fourth transistor are both control ends of the first adapting unit.

4. The electronic device according to claim 3, wherein when the first power supply unit supplies power to only the system unit, the first control unit controls the first transistor and the fourth transistor to be in an on state, and controls the second transistor and the third transistor to be in an off state, so that the first adaptation unit adapts and outputs a current input by the external power supply;

when the first power supply unit supplies power to the system unit and the battery, the first control unit controls the first transistor, the second transistor, the third transistor and the fourth transistor are in a switching state, so that the first adaptation unit adapts current input by the external power supply and outputs the current.

5. The electronic device of any one of claims 1-4, wherein the second power supply unit further comprises: a second adapting unit, a first end of which is coupled with the power interface, a second end of which is coupled with the first end of the second switch unit, and a control end of which is coupled with the second control unit;

When the power interface is coupled with the external power supply, the second adapting unit adapts and outputs the current input by the external power supply under the control of the second control unit.

6. The electronic device of claim 5, wherein the second adaptation unit comprises a fifth transistor, a sixth transistor, a second inductance, a seventh transistor, and an eighth transistor;

the first end of the fifth transistor is the first end of the second adapting unit and is coupled with the power interface, the second end of the fifth transistor is coupled with the first end of the sixth transistor, the second end of the sixth transistor is grounded, the first end of the sixth transistor is also coupled with one end of the second inductor, the other end of the second inductor is coupled with the first end of the seventh transistor, the second end of the seventh transistor is grounded, the second end of the seventh transistor is also coupled with the second end of the eighth transistor, and the first end of the eighth transistor is the second end of the second adapting unit and is coupled with the first end of the second switching unit;

the third terminal of the fifth transistor, the third terminal of the sixth transistor, the third terminal of the seventh transistor and the third terminal of the eighth transistor are both control terminals of the second adapting unit;

When the second power supply unit supplies power to the battery, the second control unit controls the fifth transistor, the sixth transistor, the seventh transistor and the eighth transistor are in a switching state, so that the second adapting unit adapts current input by the external power supply and outputs the current.

7. The electronic device of any one of claims 1-6, wherein,

the first switch unit is a ninth transistor; the first end of the ninth transistor is the first end of the first switch unit, the second end of the ninth transistor is the second end of the first switch unit, and the third end of the ninth transistor is the third end of the first switch unit;

the second switch unit is a tenth transistor; the first end of the tenth transistor is the first end of the second switch unit, the second end of the tenth transistor is the second end of the second switch unit, and the third end of the tenth transistor is the third end of the second switch unit.

8. The electronic device of claim 3 or 4, wherein the first power supply unit further comprises a first capacitor and a second capacitor, wherein,

A first end of the first capacitor is coupled with the power interface, and a second end of the first capacitor is grounded; the first end of the second capacitor is coupled with the first end of the first transistor, and the second end of the second capacitor is grounded.

9. The electronic device of claim 8, wherein the first power supply unit further comprises a first resistor and a second resistor, wherein,

the first resistor is connected in series between the first end of the first capacitor and the first end of the second capacitor;

the second resistor is connected in series between the battery and the second end of the first switch unit.

10. The electronic device of claim 8 or 9, wherein the first power supply unit further comprises a fifth capacitor, a first end of the fifth capacitor being coupled to the first end of the first switch unit, a second end of the fifth capacitor being grounded.

11. The electronic device of claim 6, wherein the second power supply unit further comprises a third capacitor and a fourth capacitor, wherein,

a first end of the third capacitor is coupled with the power interface, and a second end of the third capacitor is grounded;

the first end of the fourth capacitor is coupled with the first end of the fifth transistor, and the second end of the fourth capacitor is grounded.

12. The electronic device of claim 11, wherein the second power supply unit further comprises a third resistor and a fourth resistor, wherein,

the third resistor is connected in series between the first end of the third capacitor and the first end of the fourth capacitor;

the fourth resistor is connected in series between the battery and the second terminal of the second switching unit.

13. A power supply method, characterized in that it is applied to an electronic device according to any one of claims 1 to 12, said method comprising:

the power interface is coupled with an external power supply, and the system unit controls the first power supply unit and the second power supply unit to start working; the system unit controls the working modes of the first power supply unit and the second power supply unit so that the power supply device works in different power supply modes; the operation mode of the first power supply unit includes a first mode, the operation mode of the second power supply unit includes a second mode, the first mode indicates that the first power supply unit supplies power to the system unit only, the second mode indicates that the second power supply unit supplies power to the battery, and the operation mode of the first power supply unit further includes a third mode indicating that the first power supply unit supplies power to the system unit and the battery.

14. The power supply method according to claim 13, characterized in that the method further comprises: the system unit detects the remaining power of the battery;

and the system unit controls the working modes of the first power supply unit and the second power supply unit according to the residual electric quantity of the battery so that the power supply device works in different power supply modes.

15. The power supply method according to claim 13 or 14, characterized in that the method further comprises:

the system unit also controls the power supply parameters of the power supply device so that the power supply device can work in different power supply modes.

16. The power supply method according to claim 15, wherein the system unit controls the operation modes of the first power supply unit and the second power supply unit and the power supply parameters of the power supply device so that the power supply device operates in different power supply modes, comprising:

when the residual electric quantity of the battery is smaller than a first threshold value or the residual electric quantity of the battery cannot be detected, the system unit controls the power supply device to work in a trickle charge mode, when the power supply device works in the trickle charge mode, the first power supply unit works in the first mode, the second power supply unit works in the second mode, and power supply parameters of the first power supply unit and the second power supply unit are first parameters;

When the residual electric quantity of the battery is larger than the first threshold value and smaller than a second threshold value, the system unit controls the power supply device to work in a quick charging mode, when the power supply device works in the quick charging mode, the first power supply unit works in the third mode, the second power supply unit works in the second mode, power supply parameters of the first power supply unit and the second power supply unit are second parameters, and the second threshold value is larger than the first threshold value;

when the residual electric quantity of the battery is larger than the second threshold value and the battery is not full, the system unit controls the power supply device to work in a termination charging mode, when the power supply device works in the termination charging mode, the first power supply unit works in the first mode, the second power supply unit works in the second mode, and the power supply parameters of the first power supply unit and the second power supply unit are third parameters;

wherein the first parameter and the third parameter are different.

17. The method of supplying power according to claim 16, wherein the rate of charge of the battery when the power supply device is operating in the fast charge mode is higher than the rate of charge of the battery when the power supply device is operating in the trickle charge mode or the end charge mode.

18. The power supply method according to claim 16, characterized in that the method further comprises:

during the operation of the power supply device in the trickle charge mode, the system unit continues to detect the remaining power of the battery;

when the remaining capacity of the battery is larger than the first threshold value and smaller than the second threshold value, the system unit controls the power supply device to be switched from the trickle charge mode to the quick charge mode.

19. The power supply method according to claim 16, characterized in that the method further comprises:

during operation of the power supply device in the quick charge mode, the system unit continues to detect the remaining power of the battery;

when the remaining capacity of the battery is greater than the second threshold, the system unit controls the power supply device to switch from the quick charge mode to the termination charge mode.

20. The power supply method according to claim 16, characterized in that the method further comprises:

during the process that the power supply device works in the charging termination mode, the system unit continues to detect the residual electric quantity of the battery;

when the battery is full, the system unit controls the first power supply unit to work in the first mode, and the second power supply unit is closed.

21. The power supply method according to claim 16, wherein when the remaining amount of the battery is greater than the first threshold value and less than a second threshold value, before the system unit controls the power supply device to operate in the quick charge mode, the method further comprises:

the system unit determines that the system state of the system unit is a starting state;

the system unit acquires the load state of the system unit at the current moment; the load state of the system unit comprises light load and heavy load;

and when the load state of the system unit is light load, the system unit controls the power supply device to work in the rapid charging mode.

22. The method of powering according to claim 21, characterized in that the method further comprises:

when the load state of the system unit is heavy load, the system unit controls the power supply device to work in a direct connection and switch charging mode;

when the power supply device works in the direct connection and switch charging mode, the first power supply unit works in the first mode, the second power supply unit works in the second mode, power supply parameters of the first power supply unit and the second power supply unit are fourth parameters, and the fourth parameters are different from the first parameters and the third parameters.

23. The method of powering according to claim 22, characterized in that the method further comprises:

during the process that the power supply device works in the direct connection and switch charging mode, the system unit continuously detects the residual electric quantity of the battery;

when the residual capacity of the battery is larger than the second threshold value, the system unit controls the power supply device to be switched from the direct-connection and switch charging mode to the termination charging mode.

24. The power supply method according to any one of claims 13-23, wherein the power interface is coupled to the external power source through a power adapting unit, the method further comprising, before the system unit controls the first power supply unit and the second power supply unit to start operating:

the system unit determines that the power supply adaptation unit and a cable coupled with the power supply adaptation unit and the power supply interface meet preset standards, and the preset standards are used for indicating that the power supply adaptation unit and the cable can support the first power supply unit and the second power supply unit to work simultaneously.