Charging and discharging control method, charging and discharging control circuit and battery pack

Abstract

The invention provides a charging and discharging control method, a charging and discharging control circuit and a battery pack. The charge-discharge control method is applied to the battery pack. The battery pack comprises a wake-up circuit, a battery pack, a charging and discharging switch circuit and a charging and discharging circuit. The wake-up circuit is used for generating a wake-up signal when being electrically connected with external equipment. The charge-discharge switch circuit is connected with the battery pack. The charge-discharge circuit is connected with the battery pack through the charge-discharge switch circuit. The charging and discharging control method comprises the following steps: when the battery pack is dormant, controlling the charging and discharging switching circuit to disconnect the charging and discharging circuit from the battery pack; and the control circuit responds to the wake-up signal, controls the charge-discharge switching circuit to enable the battery pack to supply power to the charge-discharge circuit and controls the wake-up circuit to be closed. When the battery pack is dormant, the charging and discharging function can be closed, low dormancy power consumption is guaranteed, the battery pack is automatically awakened when the external equipment is connected to the battery pack, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery pack charging and discharging, and in particular to a charging and discharging control method, a charging and discharging control circuit and a battery pack. Background Art

[0002] Currently, battery packs with fast charge and discharge functions mainly adopt two solutions to deal with the problem of sleep power consumption.

[0003] The first solution is to turn off the external charging and discharging function after the battery pack goes into sleep mode to ensure low sleep power consumption (usually less than 10uA). However, when the battery pack needs to be used to charge mobile phones and other power-consuming devices, the user needs to manually turn on the battery pack and wake it up before it can discharge externally. This solution does not provide a good user experience.

[0004] The second solution is to keep the external charging and discharging functions open when the battery pack is in sleep mode, and periodically detect whether there are any power-consuming devices connected to ensure that the battery pack can be automatically charged when needed. This solution requires a large sleep power consumption (usually greater than 100uA), which greatly shortens the standby life of the product and may even cause the battery cell to run out of energy during storage or transportation. This needs to be improved urgently. Summary of the invention

[0005] The present application provides a charge and discharge control method, a charge and discharge control circuit and a battery pack, which can automatically wake up the battery pack while maintaining low sleep power consumption of the battery pack.

[0006] The present application provides a charge and discharge control method, which is applied to a battery pack, wherein the battery pack comprises:

[0007] A wake-up circuit, used to generate a wake-up signal when electrically connected to an external device;

[0008] Battery pack;

[0009] A charge and discharge switch circuit connected to the battery pack;

[0010] a charge and discharge circuit, the charge and discharge circuit being connected to the battery pack via the charge and discharge switch circuit;

[0011] The charge and discharge control method comprises:

[0012] When the battery pack is in dormancy, controlling the charge and discharge switch circuit to disconnect the charge and discharge circuit from the battery pack; and

[0013] In response to the wake-up signal, the charge-discharge switch circuit is controlled so that the battery pack supplies power to the charge-discharge circuit, and the wake-up circuit is controlled to be turned off.

[0014] Optionally, after responding to the wake-up signal, controlling the charge and discharge switch circuit so that the battery pack supplies power to the charge and discharge circuit, and controlling the wake-up circuit to be turned off, the charge and discharge control method further includes:

[0015] Detecting the working state of the charging and discharging circuit;

[0016] If the charging and discharging circuit is in a discharging state and a discharging current is formed between the battery pack and the external device, it is confirmed that the external device is an electric device;

[0017] The charging and discharging circuit is controlled so that the battery pack supplies power to the electrical device through the charging and discharging circuit.

[0018] Optionally, after detecting the working state of the charge and discharge circuit, the charge and discharge control method further includes:

[0019] If no discharge current is formed between the battery pack and the external device within a first preset time period, controlling the charge-discharge circuit to switch from the discharge state to the charge-discharge state;

[0020] Detecting the working state of the charging and discharging circuit;

[0021] If the charging and discharging circuit is in a charging state and a charging current is formed between the battery pack and the external device, it is confirmed that the external device is a power supply device;

[0022] The charging and discharging circuit is controlled so that the battery pack is charged by the power supply device through the charging and discharging circuit.

[0023] Optionally, after detecting the working state of the charge and discharge circuit, the charge and discharge control method further includes:

[0024] If no charging current is formed between the battery pack and the external device within a second preset time period, the charging and discharging circuit is controlled to perform identity confirmation and authentication with the external device.

[0025] Optionally, the battery pack includes a display device; after confirming that the external device is a power supply device, the charge and discharge control method includes:

[0026] Acquiring the charging amount of the battery pack charged by the power supply device through the charging and discharging circuit; and

[0027] The display device is controlled to display the charging quantity.

[0028] Optionally, the battery pack includes a display device; after confirming that the external device is an electrical device, the charge and discharge control method further includes:

[0029] Obtaining the amount of power supplied by the battery pack to the power-consuming device through the charging and discharging circuit; and

[0030] The display device is controlled to display the power supply amount.

[0031] Optionally, the battery pack includes a display device; after responding to the wake-up signal, the charge and discharge control method further includes:

[0032] The display device is controlled to display the status of the battery pack.

[0033] The present application provides a computer-readable storage medium having a program stored thereon. When the program is executed by a processor, the charge and discharge control method as described in any one of the above items is implemented.

[0034] The present application provides a charge and discharge control circuit, comprising one or more processors, for implementing the charge and discharge control method as described in any one of the above items.

[0035] The present application also provides a battery pack, comprising:

[0036] A wake-up circuit, used to generate a wake-up signal when electrically connected to an external device;

[0037] Battery pack;

[0038] A charge and discharge switch circuit connected to the battery pack;

[0039] a charge and discharge circuit, the charge and discharge circuit being connected to the battery pack via the charge and discharge switch circuit; and

[0040] The charge and discharge control circuit as described above is connected to the battery pack, the wake-up circuit, the charge and discharge circuit, and the charge and discharge switch circuit.

[0041] In some embodiments, when the battery pack is in sleep mode, the charge and discharge switch circuit is controlled to disconnect the charge and discharge circuit from the battery pack. When the battery pack is in sleep mode, the charge and discharge function can be turned off to ensure low sleep power consumption. When an external device is connected to the battery pack, the charge and discharge switch circuit is controlled in response to a wake-up signal so that the battery pack supplies power to the charge and discharge circuit. When the external device is connected to the battery pack, the battery pack can be automatically woken up, thereby improving the user experience.

[0042] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0044] Figure 1 Shown is a structural block diagram of an embodiment of a battery pack of the present application.

[0045] Figure 2 Shown is a partial flow chart of an embodiment of the charge and discharge control method of the present application.

[0046] Figure 3 Shown Figure 2 A flow chart of another part of the charge and discharge control method is shown.

[0047] Figure 4 Shown Figure 2 A flow chart of another part of the charge and discharge control method is shown.

[0048] Figure 5 Shown is a structural block diagram of a charge and discharge control circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0050] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0051] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0052] The charge and discharge control method of the embodiment of the present application is applied to a battery pack. The battery pack includes: a wake-up circuit, a battery pack, a charge and discharge switch circuit, and a charge and discharge circuit. The wake-up circuit is used to generate a wake-up signal when electrically connected to an external device. The charge and discharge switch circuit is connected to the battery pack. The charge and discharge circuit is connected to the battery pack through the charge and discharge switch circuit. The charge and discharge control method includes: when the battery pack is dormant, controlling the charge and discharge switch circuit to disconnect the charge and discharge circuit from the battery pack; in response to the wake-up signal, controlling the charge and discharge switch circuit so that the battery pack supplies power to the charge and discharge circuit, and controlling the wake-up circuit to turn off. The present application can turn off the charge and discharge function when the battery pack is dormant to ensure low dormancy power consumption, and automatically wake up the battery pack when an external device is connected to the battery pack, thereby improving the user experience.

[0053] The present application provides a charge and discharge control method, a charge and discharge control circuit, and a battery pack. The charge and discharge control method, the charge and discharge control circuit, and the battery pack of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0054] Figure 1 FIG. 1 is a block diagram of a battery pack 10 according to an embodiment of the present invention. The battery pack 10 includes a wake-up circuit 13, a battery pack 15, a charge and discharge switch circuit 16, and a charge and discharge circuit 14. Figure 1 In the illustrated embodiment, the battery pack 10 includes: a charge and discharge module 11 and a battery management module 12. The charge and discharge module 11 includes: a wake-up circuit 13 and a charge and discharge circuit 14. The battery management module 12 includes: a battery pack 15 and a charge and discharge switch circuit 16.

[0055] The wake-up circuit 13 is used to generate a wake-up signal when electrically connected to an external device. The battery pack 10 also includes a port 17. Port 17 is electrically connected to the wake-up circuit 13. Port 17 is used to access an external device. In some embodiments, port 17 includes a Type-C port. When an external device is connected to the battery pack 10, the wake-up circuit 13 is connected to the external device through port 17 and can generate a wake-up signal. In some embodiments, the wake-up circuit 13 includes a transistor. The transistor includes a body diode, and when an external device is connected, the body diode generates a small current leakage, thereby generating a wake-up signal. The wake-up circuit 13 can control whether the battery pack 10 can discharge to the outside. When the wake-up circuit 13 is turned on, the battery pack 10 can discharge to the outside. When the wake-up circuit 13 is turned off, the battery pack 10 cannot discharge to the outside.

[0056] The charge and discharge circuit 14 is electrically connected to the wake-up circuit 13 and is used to control the on or off of the wake-up circuit 13. The charge and discharge circuit 14 includes a charge and discharge module control circuit and a charge and discharge module drive circuit.

[0057] The charge and discharge switch circuit 16 is connected to the battery pack 15. The charge and discharge switch circuit 16 is electrically connected to the charge and discharge circuit 14, and can discharge to the charge and discharge circuit 14, or receive charge from the charge and discharge circuit 14. When the charge and discharge switch circuit 16 discharges to the charge and discharge circuit 14, the charge and discharge module 11 is powered; when the charge and discharge switch circuit 16 is turned off, it does not discharge to the charge and discharge circuit 14, and the charge and discharge module 11 is powered off. In some embodiments, the charge and discharge switch circuit 16 includes a transistor. The charge and discharge circuit 14 is connected to the battery pack 15 through the charge and discharge switch circuit 16, and receives discharge from the battery pack 15 or charges the battery pack 15 through the charge and discharge switch circuit 16.

[0058] The battery pack 10 also includes a charge and discharge control circuit 18, which is connected to the battery pack 15, the wake-up circuit 13, the charge and discharge circuit 14, and the charge and discharge switch circuit 16. The charge and discharge control circuit 18 includes a controller. The charge and discharge control circuit 18 can monitor the working state of the battery pack 15, such as the charge and discharge state and the charge and discharge amount. The charge and discharge control circuit 18 is electrically connected to the wake-up circuit 13 through the charge and discharge circuit 14, and controls the charge and discharge circuit 14 to control the wake-up circuit 13 to turn on or off. In some embodiments, the charge and discharge control circuit 18 is connected to the charge and discharge circuit 14 via IIC communication. The charge and discharge control circuit 18 is electrically connected to the charge and discharge switch circuit 16 to control the charge and discharge switch circuit 16 to turn on or off, thereby controlling whether to power the charge and discharge module 11.

[0059] The battery pack 10 includes a display device 19. The charge and discharge control circuit 18 is electrically connected to the display device 19 to control the display device 19 to display corresponding information. The display device 19 includes but is not limited to an indicator light.

[0060] Figure 2FIG. 2 is a partial flow chart of an embodiment of a charge and discharge control method 200 of the present application. The charge and discharge control method 200 is applied to a battery pack 10. The charge and discharge control circuit 18 is used to execute the charge and discharge control method 200. The charge and discharge control method 200 includes step 201 and step 202.

[0061] Step 201 , when the battery pack 10 is in sleep mode, the charge and discharge switch circuit 16 is controlled to disconnect the charge and discharge circuit 14 from the battery pack 15 .

[0062] When the battery pack 10 is in sleep mode, the charge and discharge switch circuit 16 is turned off, the charge and discharge circuit 14 is disconnected from the battery pack 15, the charge and discharge circuit 14 is powered off, and thus the charge and discharge module 11 is powered off. The battery pack 10 can maintain a low sleep power consumption, thus saving power and increasing the service life of the battery pack 10.

[0063] Step 202 , in response to the wake-up signal, the charge-discharge switch circuit 16 is controlled so that the battery pack 15 supplies power to the charge-discharge circuit 14 , and the wake-up circuit 13 is controlled to be turned off.

[0064] When an external device is connected to the battery pack 10, the wake-up circuit 13 generates a wake-up signal and sends it to the charge and discharge control circuit 18 through the charge and discharge circuit 14. After receiving the wake-up signal, the charge and discharge control circuit 18 controls the charge and discharge switch circuit 16 to open, so that the battery pack 15 supplies power to the charge and discharge circuit 14. At this time, the charge and discharge circuit 14 is powered by the battery pack 15 and the external device. The charge and discharge control circuit 18 controls the wake-up circuit 13 to close, so that the charge and discharge module 11 enters the discharge mode, which can only discharge to the outside and cannot accept charging from the external device. At this time, the charge and discharge circuit 14 is only powered by the battery pack 15, so that the backflow current of the external device to the charge and discharge circuit 14 can be cut off. The battery pack 10 enters the external discharge mode and can charge the external device. After receiving the wake-up signal, the charge and discharge control circuit 18 automatically wakes up the battery pack 10 and puts it into the external discharge mode. In this way, there is no need for the user to manually wake up, which improves the user experience.

[0065] In some embodiments, when the battery pack 10 is in sleep mode, the charge and discharge switch circuit 16 is controlled to disconnect the charge and discharge circuit 14 from the battery pack 15. When the battery pack 10 is in sleep mode, the charge and discharge function can be turned off to ensure low sleep power consumption. When an external device is connected to the battery pack 10, in response to a wake-up signal, the charge and discharge switch circuit 16 is controlled to enable the battery pack 15 to supply power to the charge and discharge circuit 14. When the external device is connected to the battery pack 10, the battery pack 10 can be automatically woken up, thereby improving the user experience.

[0066] In some embodiments, after step 202, the charge and discharge control method 200 further includes: controlling the display device 19 to display the status of the battery pack 15. After the battery pack 10 starts working, the display device 19 is controlled to light up and last for a period of time. After the battery pack 10 enters the charging or discharging state, the power level of the battery pack 10 is displayed. In this way, the user can be reminded that the battery pack 15 has started working and the working status of the battery pack 15 can be reminded.

[0067] Figure 3 Shown Figure 2 A flow chart of another part of the charge and discharge control method 200 is shown.

[0068] After step 202 , the charge and discharge control method 200 further includes steps 203 to 206 .

[0069] Step 203 , detecting the working state of the charge and discharge circuit 14 .

[0070] After step 202 , the battery pack 10 enters an external discharge mode to detect the working state of the charge and discharge circuit 14 and whether the battery pack 10 discharges to an external device through the port 17 .

[0071] Step 204, determining whether the charge-discharge circuit 14 is in a discharge state.

[0072] In some embodiments, step 204 includes: determining whether the charge-discharge circuit 14 is in a discharge state according to the current flow direction between the charge-discharge circuit 14 and the external device.

[0073] Step 205 , if the charge-discharge circuit 14 is in the discharge state, and a discharge current is formed between the battery pack 15 and the external device, it is confirmed that the external device is an electric device.

[0074] If it is detected that the charge and discharge circuit 14 is in a discharging state and a discharging current is formed between the battery pack 15 and the external device, that is, the current flows from the battery pack 15 to the external device, it indicates that the external device is an electrical device, such as a mobile phone.

[0075] In some embodiments, after step 205, the charge and discharge control method 200 further includes: obtaining the power supply amount of the battery pack 15 for the power-consuming device through the charge and discharge circuit 14; and controlling the display device 19 to display the power supply amount. In this way, the user can be reminded that the battery pack 15 is charging the power-consuming device and the charging progress can be reminded.

[0076] Step 206 , controlling the charge and discharge circuit 14 so that the battery pack 15 supplies power to the electrical device through the charge and discharge circuit 14 .

[0077] After confirming that the external device is an electric device, the charge-discharge circuit 14 is controlled to discharge externally, so that the battery pack 15 supplies power to the electric device through the charge-discharge circuit 14 .

[0078] Figure 4 Shown Figure 2 FIG. 2 is a flow chart of another part of the charge and discharge control method 200 shown in FIG. Figure 3-Figure 4 After step 203 , the charge and discharge control method 200 further includes: steps 207 to 214 .

[0079] Step 207, determining whether the first preset time duration has been reached.

[0080] If in step 204, the charge-discharge circuit 14 is not in the discharge state, step 207 is executed. It is determined whether the charge-discharge circuit 14 is not in the discharge state for a first preset time. The first preset time can be determined based on experience or experiments and stored in the charge-discharge control circuit 18. When it is detected that the charge-discharge circuit 14 is not in the discharge state, timing is started and compared with the read first preset time.

[0081] Step 208 , if no discharge current is formed between the battery pack 15 and the external device within the first preset time period, control the charge-discharge circuit 14 to switch from the discharge state to the charge-discharge state.

[0082] If the charge and discharge circuit 14 is not in the discharge state for a first preset time, that is, no discharge current is formed between the battery pack 15 and the external device for a first preset time, the charge and discharge circuit 14 is controlled to switch from the discharge state to the charge and discharge state, and the charge and discharge circuit 14 is switched from being able to discharge externally to being able to discharge externally and receive charging from an external device.

[0083] Step 209 , detecting the working state of the charge and discharge circuit 14 .

[0084] After the charge and discharge circuit 14 is in the charge and discharge state, the working state of the charge and discharge circuit 14 is detected. The working state of the charge and discharge circuit 14 can be detected by whether a current is formed between the charge and discharge circuit 14 and the external device and the current flow direction.

[0085] Step 210, determining whether the charge-discharge circuit 14 is in a charging state.

[0086] In some embodiments, step 210 includes: determining whether the charge-discharge circuit 14 is in a charging state according to the current flow direction between the charge-discharge circuit 14 and the external device.

[0087] Step 211 , if the charge-discharge circuit 14 is in a charging state and a charging current is formed between the battery pack 15 and the external device, it is confirmed that the external device is a power supply device.

[0088] In some embodiments, after step 211, the charge and discharge control method 200 includes: obtaining the charging power of the battery pack 15 charged by the power supply device through the charge and discharge circuit 14; and controlling the display device 19 to display the charging power. In this way, the user can be reminded that the power supply device is charging the battery pack 15 and the charging progress can be reminded.

[0089] Step 212 , controlling the charge and discharge circuit 14 so that the battery pack 15 is charged by the power supply device through the charge and discharge circuit 14 .

[0090] Step 213, determining whether the second preset time duration has been reached.

[0091] In step 210, if the charge-discharge circuit 14 is not in the charging state, it is determined whether the duration of the non-charging state reaches a second preset duration. The second preset duration may be stored in the charge-discharge control circuit 18. The second preset duration may be the same as or different from the first preset duration.

[0092] Step 214 , if no charging current is formed between the battery pack 15 and the external device within the second preset time period, control the charging and discharging circuit 14 to perform identity confirmation and authentication with the external device.

[0093] If no charging current is formed between the battery pack 15 and the external device within the second preset time, it means that the external device is not a power supply device. In the above steps, it has been confirmed that the external device is not a power consumption device, which means that the external device may be interference or other situations. The control charge and discharge circuit 14 and the external device perform identity confirmation and verification. In some embodiments, the control charge and discharge circuit 14 and the external device confirm the identity of the external device through handshake communication.

[0094] The charge and discharge control method 200 provided in the embodiment of the present application is applied to an electronic device. Specifically, the electronic device may be, but is not limited to, a desktop computer, a portable computer, a smart mobile terminal, etc. This is not limited here, and any electronic device that can implement the embodiment of the present application belongs to the protection scope of the present application.

[0095] Figure 5 The figure is a structural block diagram of the charge and discharge control circuit 18 provided in an embodiment of the present application.

[0096] like Figure 5 As shown, the charge and discharge control circuit 18 includes one or more processors 31 for implementing the charge and discharge control method 200 as described above.

[0097] In some embodiments, the charge and discharge control circuit 18 may include a computer-readable storage medium 32, which may store a program that can be called by the processor 31 and may include a non-volatile storage medium. In some embodiments, the charge and discharge control circuit 18 may include a memory 33 and an interface 34. In some embodiments, the charge and discharge control circuit 18 may also include other hardware according to actual applications.

[0098] The computer-readable storage medium 32 of the embodiment of the present application stores a program thereon, and when the program is executed by the processor 31, it is used to implement the charge and discharge control method 200 described above.

[0099] The present application may take the form of a computer program product implemented on one or more computer-readable storage media 32 (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing program code. The computer-readable storage medium 32 includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information can be a computer-readable instruction, a data structure, a module of a program, or other data. Examples of computer-readable storage media 32 include but are not limited to: phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassette, magnetic tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

[0100] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0101] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A charge and discharge control method, applied to a battery pack, characterized in that: The battery pack comprises: A wake-up circuit, used to generate a wake-up signal when electrically connected to an external device; Battery pack; A charge and discharge switch circuit connected to the battery pack; a charge and discharge circuit, the charge and discharge circuit being connected to the battery pack via the charge and discharge switch circuit; The charge and discharge control method comprises: When the battery pack is in dormancy, controlling the charge and discharge switch circuit to disconnect the charge and discharge circuit from the battery pack; and In response to the wake-up signal, the charge-discharge switch circuit is controlled so that the battery pack supplies power to the charge-discharge circuit, and the wake-up circuit is controlled to be turned off.

2. The charge and discharge control method according to claim 1, characterized in that: After responding to the wake-up signal, controlling the charge and discharge switch circuit so that the battery pack supplies power to the charge and discharge circuit, and controlling the wake-up circuit to be turned off, the charge and discharge control method further includes: Detecting the working state of the charging and discharging circuit; If the charging and discharging circuit is in a discharging state and a discharging current is formed between the battery pack and the external device, it is confirmed that the external device is an electric device; The charging and discharging circuit is controlled so that the battery pack supplies power to the electrical device through the charging and discharging circuit.

3. The charge and discharge control method according to claim 2, characterized in that: After detecting the working state of the charge and discharge circuit, the charge and discharge control method further includes: If no discharge current is formed between the battery pack and the external device within a first preset time period, controlling the charge-discharge circuit to switch from the discharge state to the charge-discharge state; Detecting the working state of the charging and discharging circuit; If the charging and discharging circuit is in a charging state and a charging current is formed between the battery pack and the external device, it is confirmed that the external device is a power supply device; The charging and discharging circuit is controlled so that the battery pack is charged by the power supply device through the charging and discharging circuit.

4. The charge and discharge control method according to claim 3, characterized in that: After detecting the working state of the charge and discharge circuit, the charge and discharge control method further includes: If no charging current is formed between the battery pack and the external device within a second preset time period, the charging and discharging circuit is controlled to perform identity confirmation and authentication with the external device.

5. The charge and discharge control method according to claim 3, characterized in that: The battery pack includes a display device; after confirming that the external device is a power supply device, the charge and discharge control method includes: Acquiring the charging amount of the battery pack charged by the power supply device through the charging and discharging circuit; and The display device is controlled to display the charging quantity.

6. The charge and discharge control method according to claim 2, characterized in that: The battery pack includes a display device; after confirming that the external device is an electric device, the charge and discharge control method further includes: Obtaining the amount of power supplied by the battery pack to the power-consuming device through the charging and discharging circuit; and The display device is controlled to display the power supply amount.

7. The charge and discharge control method according to claim 1, characterized in that: The battery pack includes a display device; after responding to the wake-up signal, the charge and discharge control method further includes: The display device is controlled to display the status of the battery pack.

8. A computer-readable storage medium, characterized in that: A program is stored thereon, and when the program is executed by a processor, the charge and discharge control method as described in any one of claims 1 to 7 is implemented.

9. A charge and discharge control circuit, characterized in that: The method comprises one or more processors for implementing the charge and discharge control method as described in any one of claims 1 to 7.

10. A battery pack, characterized in that: include: A wake-up circuit, used to generate a wake-up signal when electrically connected to an external device; Battery pack; A charge and discharge switch circuit connected to the battery pack; a charge and discharge circuit, the charge and discharge circuit being connected to the battery pack via the charge and discharge switch circuit; and The charge and discharge control circuit as described in claim 9 is connected to the battery pack, the wake-up circuit, the charge and discharge circuit, and the charge and discharge switch circuit.

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