Dual-output battery pack, control method, and storage medium

Abstract

The application relates to the technical field of batteries and discloses a double-output battery pack, a control method and a storage medium, wherein the battery pack comprises a battery cell module, a main output module, a secondary output module, a current limiting module and an MCU; the power input end of the main output module is connected with the output end of the battery cell module; the power input end of the secondary output module is connected with the output end of the battery cell module through the current limiting module; the main output module and the secondary output module are in communication connection with the MCU; the secondary output module is used for outputting an interrupt signal to the MCU; and the MCU is used for acquiring the output current of the battery pack after receiving the interrupt signal; whether the output current is continuously greater than a preset threshold value within a preset response time is judged; if yes, the main output module is switched to work, and the secondary output module is closed; and if not, the secondary output module is maintained to work. The battery pack can avoid damaging the connector by directly outputting a large current and improve the safety of the battery pack.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a dual-output battery pack, a control method, and a storage medium. Background Technology

[0002] Currently, host devices powered by multiple series-parallel battery packs generally have large input capacitance. When the battery pack is connected to the host, it charges the host's input capacitance, resulting in a large current at the moment of contact, which may also generate large sparks. Over time, this can damage the connectors and pose a safety hazard to the user. Summary of the Invention

[0003] This invention provides a dual-output battery pack, a control method, and a storage medium to avoid damaging the connector by directly outputting large currents and to improve the safety of the battery pack.

[0004] In a first aspect, to solve the aforementioned technical problems, the present invention provides a dual-output battery pack, including a cell module, a main output module, a secondary output module, a current limiting module, and an MCU. The power input terminal of the main output module is connected to the output terminal of the cell module, and the power input terminal of the secondary output module is connected to the output terminal of the cell module through the current limiting module. The main output module and the secondary output module are communicatively connected to the MCU. The secondary output module is used to output an interrupt signal to the MCU, and the MCU is used for:

[0005] After receiving the interrupt signal, the output current of the battery pack is obtained;

[0006] If the output current is continuously greater than a preset threshold within a preset response time, the main output module is switched to work and the secondary output module is turned off; otherwise, the secondary output module is kept working.

[0007] Preferably, the MCU is further used for:

[0008] When the main output module is working, it acquires the output current of the battery pack according to a preset time interval;

[0009] If the output current is continuously less than the threshold within the response time, the system switches to the operation of the secondary output module and shuts down the main output module; otherwise, it returns to the step of obtaining the output current of the battery pack according to the preset time interval.

[0010] Preferably, the battery pack further includes a current detection module, which is connected in series with the output circuit of the battery pack. The current detection module is used to acquire the output current of the battery pack and send it to the MCU.

[0011] Preferably, the sub-output module includes a first switching unit and a signal output unit. The controlled terminal of the first switching unit is connected to the MCU. The first terminal of the first switching unit is connected to the output terminal of the current limiting module. The second terminal of the first switching unit is used to connect to the output port. The data input terminal of the signal output unit is connected to the second terminal of the first switching unit. The signal output unit is communicatively connected to the MCU. The signal output unit is used to detect the current of the output port and output an interrupt signal.

[0012] Preferably, the signal output unit includes an output resistor, a second switching unit, and a third switching unit. The first end of the output resistor is connected to the second end of the first switching unit, and the second end of the output resistor is used to connect to an output port.

[0013] The first terminal of the second switching unit is connected to the first terminal of the output resistor, the controlled terminal of the second switching unit is connected to the second terminal of the output resistor, the second terminal of the second switching unit is connected to the controlled terminal of the third switching unit, the first terminal of the third switching unit is connected to a high level, the second terminal of the third switching unit is grounded, and the first terminal of the third switching unit is connected to the MCU for communication.

[0014] Preferably, the second switching unit includes a PNP transistor, and the third switching unit includes an NPN transistor Q64. The emitter of the PNP transistor is connected to the first terminal of the output resistor, the base of the PNP transistor is connected to the second terminal of the output resistor, the collector of the PNP transistor is connected to the base of the NPN transistor Q64, the collector of the NPN transistor Q64 is connected to a high level, the emitter of the NPN transistor Q64 is grounded, and the collector of the NPN transistor Q64 is communicatively connected to the MCU.

[0015] Preferably, the first switching unit includes an N-type MOS transistor and a P-type MOS transistor. The gate of the N-type MOS transistor is connected to the MCU, the source of the N-type MOS transistor is grounded, the drain of the N-type MOS transistor is connected to the gate of the P-type MOS transistor, the source of the P-type MOS transistor is connected to the output terminal of the current limiting module, and the drain of the P-type MOS transistor is connected to the first terminal of the output resistor.

[0016] Preferably, the first switching unit further includes a Zener diode, the cathode of which is connected to the source of the P-type MOS transistor, and the anode of which is connected to the gate of the P-type MOS transistor.

[0017] In a second aspect, the present invention provides a control method for a dual-output battery pack, implemented based on the dual-output battery pack as described in any one of the first aspects, comprising:

[0018] After receiving the interrupt signal, the output current of the battery pack is obtained;

[0019] If the output current is continuously greater than a preset threshold within a preset response time, the main output module is switched to work and the secondary output module is turned off; otherwise, the secondary output module is kept working.

[0020] Thirdly, the present invention also provides a computer-readable storage medium comprising a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to perform the control method for the dual-output battery pack described in any one of the above.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention provides a dual-output battery pack, comprising a cell module, a main output module, a secondary output module, a current limiting module, and an MCU. The power input terminal of the main output module is connected to the output terminal of the cell module, and the power input terminal of the secondary output module is connected to the output terminal of the cell module through the current limiting module. The main output module and the secondary output module are communicatively connected to the MCU. The secondary output module outputs an interrupt signal to the MCU. Upon receiving the interrupt signal, the MCU acquires the output current of the battery pack and determines whether the output current continuously exceeds a preset threshold within a preset response time. If so, it switches to the main output module and shuts down the secondary output module; otherwise, it maintains the operation of the secondary output module. By adding a secondary output module, when the battery is connected to the host, the secondary output module initially outputs a small current. Once a good connection is established, it automatically switches to the main output module and outputs a large current. This avoids damage to the connector from directly outputting a large current, improving the safety of the battery pack and ensuring personal safety. Accordingly, this invention also provides a control method and storage medium for the dual-output battery pack. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a dual-output battery pack provided in a preferred embodiment of the present invention;

[0024] Figure 2 This is a circuit schematic diagram of a sub-output module provided in a preferred embodiment of the present invention;

[0025] Figure 3 This is a circuit diagram of the first switching unit provided in an embodiment of the present invention;

[0026] Figure 4 This is a circuit schematic diagram of the signal output unit provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic flowchart of a control method for a dual-output battery pack provided in a preferred embodiment of the present invention.

[0028] The reference numerals in the attached drawings are as follows: 1, first switching unit; 2, signal output unit; 21, second switching unit; 22, third switching unit. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Reference Figure 1 This invention provides a dual-output battery pack, including a cell module, a main output module, a secondary output module, a current limiting module, and an MCU (Microcontroller Unit). The power input terminal of the main output module is connected to the output terminal of the cell module, and the power input terminal of the secondary output module is connected to the output terminal of the cell module through the current limiting module. The main output module, the secondary output module, and the MCU are communicatively connected. The secondary output module outputs an interrupt signal to the MCU. Upon receiving the interrupt signal, the MCU acquires the output current of the battery pack and determines whether the output current continuously exceeds a preset threshold within a preset response time. If so, it switches to the operation of the main output module and shuts down the secondary output module; otherwise, it maintains the operation of the secondary output module.

[0031] In a specific implementation, the battery pack further includes a current detection module, which is connected in series with the output circuit of the battery pack. The current detection module is used to acquire the output current of the battery pack and send it to the MCU. For example, one end of the current detection module is connected to the negative output terminal of the cell module, and the other end is connected to the negative output port of the battery pack. The current detection module uses a Current Measure circuit to detect the output current in real time and sends it to the MCU.

[0032] In this embodiment, the response time ranges from 1 to 2 seconds, and the preset threshold for the output current is 10 mA. Initially, the secondary output module is active, and the battery pack is in sleep mode. When the battery pack is connected to the host, it first charges the host capacitor or supplies power to the host via the secondary output module, which outputs a small current. When the output current exceeds 10 mA, the secondary output module generates an interrupt signal to wake up the MCU. The MCU maintains the secondary output module's operation for 1-2 seconds and monitors the output current in real time via the Current Measure circuit. If the output current consistently exceeds 10 mA, it switches to the primary output module, and the battery pack enters working mode. If the output current does not consistently exceed 10 mA, the secondary output module remains active, and the system returns to sleep mode. The secondary output module initially outputs a small current, and once a good connection is established, it automatically switches to the primary output module and outputs a large current. This avoids damaging the connector by directly outputting a large current, improving battery pack safety and ensuring personal safety.

[0033] Furthermore, the MCU is also used for:

[0034] When the main output module is working, it acquires the output current of the battery pack according to a preset time interval;

[0035] If the output current is continuously less than the threshold within the response time, the system switches to the operation of the secondary output module and shuts down the main output module; otherwise, it returns to the step of obtaining the output current of the battery pack according to the preset time interval.

[0036] It should be noted that the preset time interval can be determined according to the detection accuracy. For example, a time interval of 1 second means that the output current is acquired once every 1 second. In the working mode, the MCU detects the output current periodically through the Current Measure circuit. When the battery pack is removed from the main unit or the output current is less than 10mA and lasts for 1-2 seconds, the MCU will turn on the auxiliary output module and turn off the main output module, and the battery will return to sleep mode.

[0037] In this embodiment, the battery cell module can use multiple cells connected in parallel or series to serve as the power output of the battery pack. The main output module includes controllable switching devices controlled by the MCU, such as relays, transistors, etc., which are not specifically limited in this invention. When a conduction signal is received from the MCU, the controllable switching device is turned on, the main output module works, and the battery pack enters the working mode; when a shutdown signal is received from the MCU, the controllable switching device is turned off, the main output module stops working, and the battery pack enters the sleep mode.

[0038] For example, the current limiting module uses a current-limiting resistor. One end of the current-limiting resistor is connected to the positive output terminal of the battery cell module, and the other end is connected to the sub-output module. By setting the resistance value of the current-limiting resistor, the output current of the sub-output module can be controlled, thereby achieving a small current output, such as 10mA. Of course, in other embodiments, current limiters, coils, or other devices can also be used for current limiting, and this invention does not limit this.

[0039] Reference Figures 2-4 In one embodiment, the sub-output module includes a first switch unit 1 and a signal output unit 2. The controlled terminal of the first switch unit 1 is connected to the MCU, the first terminal of the first switch unit 1 is connected to the output terminal of the current limiting module, the second terminal of the first switch unit 1 is used to connect to the output port, the data input terminal of the signal output unit 2 is connected to the second terminal of the first switch unit 1, the signal output unit 2 is communicatively connected to the MCU, and the signal output unit 2 is used to detect the current of the output port and output an interrupt signal.

[0040] The signal output unit 2 includes an output resistor R121, a second switch unit 21, and a third switch unit 22. The first end of the output resistor R121 is connected to the second end of the first switch unit 1, and the second end of the output resistor R121 is used to connect to an output port. The first end of the second switch unit 21 is connected to the first end of the output resistor R121, the controlled end of the second switch unit 21 is connected to the second end of the output resistor R121, and the second end of the second switch unit 21 is connected to the controlled end of the third switch unit 22. The first end of the third switch unit 22 is connected to a high level, the second end of the third switch unit 22 is grounded, and the first end of the third switch unit 22 is connected to the MCU for communication.

[0041] Specifically, the first switching unit 1 includes an N-type MOSFET Q18 and a P-type MOSFET Q3. The gate of the N-type MOSFET Q18 is connected to the MCU, the source of the N-type MOSFET Q18 is grounded, the drain of the N-type MOSFET Q18 is connected to the gate of the P-type MOSFET Q3, the source of the P-type MOSFET Q3 is connected to the output terminal of the current limiting module, and the drain of the P-type MOSFET Q3 is connected to the first terminal of the output resistor R121. For example, the drain of the N-type MOSFET Q18 can be connected to the gate of the P-type MOSFET Q3 through a resistor R88, which can increase the safety performance of the connection.

[0042] In a preferred embodiment, the gate of the N-type MOSFET Q18 is connected to the MCU via resistor R87. The N-type MOSFET Q18 is also connected to capacitor C50 and resistor R86. The first terminal of capacitor C50 is connected to the source of the N-type MOSFET Q18, and the second terminal of capacitor C50 is connected to the gate of the N-type MOSFET Q18. The two ends of resistor R86 are connected to the two ends of capacitor C50 respectively. When the N-type MOSFET Q18 is turned on or off, the capacitor acts as a buffer, further protecting the entire circuit.

[0043] Furthermore, the first switching unit 1 also includes a Zener diode ZD23. The cathode of the Zener diode ZD23 is connected to the source of the P-type MOSFET Q3, and the anode of the Zener diode ZD23 is connected to the gate of the P-type MOSFET Q3. The Zener diode ZD23 can prevent current backflow from burning out the P-type MOSFET Q3, increasing safety. Preferably, the first switching unit 1 also includes a resistor R80, with its two ends connected to the two ends of the Zener diode ZD23.

[0044] Specifically, the second switching unit 21 includes a PNP transistor Q62, and the third switching unit 22 includes an NPN transistor Q64. The first terminal of the output resistor R121 is connected to the drain of the P-type MOSFET Q3. The emitter of the PNP transistor Q62 is connected to the first terminal of the output resistor R121. The base of the PNP transistor Q62 is connected to the second terminal of the output resistor R121. The collector of the PNP transistor Q62 is connected to the base of the NPN transistor Q64. The collector of the NPN transistor Q64 is connected to a high level, and the emitter of the NPN transistor Q64 is grounded. The collector of the NPN transistor Q64 is connected to the MCU for communication. In a specific implementation, the base of the PNP transistor Q62 can be connected to the second terminal of the output resistor R121 through resistor R216. A resistor R126 is connected between the emitter and base of the PNP transistor Q62 to increase the safety of the connection.

[0045] In a preferred embodiment, the collector of the PNP transistor Q62 is connected to the base of the NPN transistor Q64 via resistor R217. The NPN transistor Q64 is also connected to capacitor C92 and resistor R223. The first terminal of capacitor C92 is connected to the base of the NPN transistor Q64, and the second terminal of capacitor C92 is connected to the emitter of the NPN transistor Q64. The two ends of resistor R223 are connected to the two ends of capacitor C92. When the NPN transistor Q64 is turned on or off, the capacitor acts as a buffer, further protecting the entire circuit. For example, the collector of the NPN transistor Q64 is connected to a high-level voltage source via resistor R224, where the high-level voltage is an external or internal +3.3V voltage source, thereby achieving a high-level output.

[0046] In this embodiment, DIS_EN is the controlled terminal of the first switching unit 1. Initially, the MCU sets DIS_EN to a high level. BAT is the input terminal of the sub-output module, connected to the output terminal of the current limiting module. DISCHARGE+ is the positive output port of the battery pack, and DIS_DET is the communication port between the sub-output module and the MCU. When DIS_EN is high, MOSFETs Q18 and Q3 are turned on, and the output voltage of the current limiting module is output to Discharge+ through the output resistor R121. The battery pack is in sleep mode, and the voltage across the output resistor R121 is approximately 0V. Transistors Q62 and Q64 are cut off, DIS_DET is high, and the MCU maintains sleep mode. When Discharge+ has current output, if the current is greater than 10mA, the voltage across the output resistor R121 will reach more than 2.2V. Transistors Q62 and Q64 are turned on, DIS_DET becomes low, the MCU is woken up, and then determines whether to switch to the main output module according to the set program. When the output current is less than 10mA again and lasts for 1-2 seconds, transistors Q62 and Q64 are cut off, DIS_DET becomes high, the MCU turns on the secondary output module and turns off the main output module, and the battery enters sleep mode, thereby realizing the automatic switching between the two working states by detecting the current inside the battery pack.

[0047] This invention adds a secondary output module. When the battery is connected to the main unit, the secondary output module first outputs a small current. After a good connection is established, it automatically switches to the main output module and outputs a large current. This avoids damaging the connector by directly outputting a large current, improves the safety of the battery pack, and ensures personal safety.

[0048] Reference Figure 5 The second embodiment of the present invention provides a control method for a dual-output battery pack, comprising the following steps:

[0049] S11, after receiving the interrupt signal, obtain the output current of the battery pack.

[0050] S12, determine whether the output current is continuously greater than a preset threshold within a preset response time. If yes, switch to the main output module and turn off the sub-output module; otherwise, keep the sub-output module running.

[0051] Preferably, the method further includes:

[0052] When the main output module is working, it acquires the output current of the battery pack according to a preset time interval;

[0053] If the output current is continuously less than the threshold within the response time, the system switches to the operation of the secondary output module and shuts down the main output module; otherwise, it returns to the step of obtaining the output current of the battery pack according to the preset time interval.

[0054] It should be noted that the control method for a dual-output battery pack provided in this embodiment of the invention is executed by a dual-output battery pack of the above embodiment. The working principles and beneficial effects of the two are one-to-one, so they will not be described again.

[0055] This invention also provides a computer-readable storage medium. The computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform the control method for a dual-output battery pack as described in the above embodiments.

[0056] For example, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in the device.

[0057] The device may be a desktop computer, laptop, handheld computer, or smart tablet, etc. The device may include, but is not limited to, a processor and memory.

[0058] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the device, connecting various parts of the device via various interfaces and lines.

[0059] The memory can be used to store the computer programs and / or modules. The processor implements various functions of the device by running or executing the computer programs and / or modules stored in the memory and by calling data stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, phonebook, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0060] Wherein, if the modules / units integrated into the device are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0061] It should be noted that the embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0062] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A dual-output battery pack, characterized in that, The system includes a battery cell module, a main output module, a secondary output module, a current limiting module, and an MCU. The power input terminal of the main output module is connected to the output terminal of the battery cell module, and the power input terminal of the secondary output module is connected to the output terminal of the battery cell module through the current limiting module. The main output module and the secondary output module are communicatively connected to the MCU. The secondary output module is used to output an interrupt signal to the MCU, and the MCU is used for: After receiving the interrupt signal, the output current of the battery pack is obtained; If the output current is continuously greater than a preset threshold within a preset response time, the main output module is switched to work and the secondary output module is turned off; otherwise, the secondary output module is kept working. The sub-output module includes a first switching unit and a signal output unit. The controlled terminal of the first switching unit is connected to the MCU, the first terminal of the first switching unit is connected to the output terminal of the current limiting module, the second terminal of the first switching unit is used to connect to the output port, the data input terminal of the signal output unit is connected to the second terminal of the first switching unit, the signal output unit is communicatively connected to the MCU, and the signal output unit is used to detect the current of the output port and output an interrupt signal. The signal output unit includes an output resistor, a second switch unit, and a third switch unit. The first end of the output resistor is connected to the second end of the first switch unit, and the second end of the output resistor is used to connect to the output port. The first terminal of the second switching unit is connected to the first terminal of the output resistor, the controlled terminal of the second switching unit is connected to the second terminal of the output resistor, the second terminal of the second switching unit is connected to the controlled terminal of the third switching unit, the first terminal of the third switching unit is connected to a high level, the second terminal of the third switching unit is grounded, and the first terminal of the third switching unit is connected to the MCU for communication.

2. The dual-output battery pack according to claim 1, characterized in that, The MCU is also used for: When the main output module is working, it acquires the output current of the battery pack according to a preset time interval; If the output current is continuously less than the threshold within the response time, the system switches to the operation of the secondary output module and shuts down the main output module; otherwise, it returns to the step of obtaining the output current of the battery pack according to the preset time interval.

3. The dual-output battery pack according to claim 2, characterized in that, The battery pack also includes a current detection module, which is connected in series with the output circuit of the battery pack. The current detection module is used to acquire the output current of the battery pack and send it to the MCU.

4. The dual-output battery pack according to claim 1, characterized in that, The second switching unit includes a PNP transistor, and the third switching unit includes an NPN transistor Q64. The emitter of the PNP transistor is connected to the first terminal of the output resistor, the base of the PNP transistor is connected to the second terminal of the output resistor, the collector of the PNP transistor is connected to the base of the NPN transistor Q64, the collector of the NPN transistor Q64 is connected to a high level, the emitter of the NPN transistor Q64 is grounded, and the collector of the NPN transistor Q64 is communicatively connected to the MCU.

5. The dual-output battery pack according to claim 1, characterized in that, The first switching unit includes an N-type MOS transistor and a P-type MOS transistor. The gate of the N-type MOS transistor is connected to the MCU, the source of the N-type MOS transistor is grounded, the drain of the N-type MOS transistor is connected to the gate of the P-type MOS transistor, the source of the P-type MOS transistor is connected to the output terminal of the current limiting module, and the drain of the P-type MOS transistor is connected to the first terminal of the output resistor.

6. The dual-output battery pack according to claim 5, characterized in that, The first switching unit further includes a Zener diode, the cathode of which is connected to the source of the P-type MOS transistor, and the anode of which is connected to the gate of the P-type MOS transistor.

7. A control method for a dual-output battery pack, characterized in that, Based on the dual-output battery pack as described in any one of claims 1-6, including: After receiving the interrupt signal, the output current of the battery pack is obtained; If the output current is continuously greater than a preset threshold within a preset response time, the main output module is switched to work and the secondary output module is turned off; otherwise, the secondary output module is kept working.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform the control method for the dual-output battery pack as described in claim 7.

Images