Lithium battery over-discharge recovery optimization method and lithium battery management system

Abstract

The invention relates to a lithium battery over-discharge recovery optimization method and a lithium battery management system.The lithium battery over-discharge recovery optimization method is applied to a control module of the lithium battery management system.The lithium battery over-discharge recovery optimization method comprises the steps that when the charging duration is smaller than the preset duration, whether the charging voltage is smaller than the preset pre-charging voltage or not is judged, and if yes, the lithium battery over-discharge recovery optimization step is executed; if yes, the charging current is adjusted to be preset pre-charging current, the charging duration is reset, and the charging duration is recalculated; entering a constant-current fast charging stage in response to the charging voltage greater than or equal to the preset pre-charging voltage and the charging duration less than the preset duration; and entering a constant-voltage charging stage in response to the condition that the charging voltage is greater than or equal to a preset constant voltage, and completing charging in response to the condition that the charging current is less than a preset termination current.

Description

Technical Field

[0001] The present application relates to the field of lithium battery charging and discharging, and in particular to a lithium battery over-discharge recovery optimization method and a lithium battery management system. Background Art

[0002] The continuous progress of the new energy industry has led to the continuous upgrading of the lithium battery industry. Although lithium batteries have a higher weight-to-energy ratio and volume-to-energy ratio, they have poor safety and are prone to overcharge and over-discharge. Therefore, when designing lithium batteries, a lithium battery protection chip is usually provided. The function of the protection chip is to disconnect the previous circuit when the lithium battery is overcharged or over-discharged, thereby limiting the output of the lithium battery. However, after the over-discharge protection, the battery is still discharging slowly. After a long enough period of time, it is usually necessary to perform a battery activation operation. In industries such as mobile phones, electrical appliances, and trams, due to the large battery capacity, a large current can be used during activation to directly reach the over-discharge recovery voltage.

[0003] However, in the field of small-capacity batteries, the over-discharge problem of batteries caused by long-term non-charging may cause the battery to fail to activate multiple times or permanently fail to activate without disassembling the device due to the small charging current. Currently, there is no effective way to solve the over-discharge problem of small-capacity battery equipment. Summary of the invention

[0004] The embodiments of the present application provide a lithium battery over-discharge recovery optimization method and a lithium battery management system to at least solve the problem in the related art that lithium batteries cannot be activated after being over-discharged.

[0005] In a first aspect, an embodiment of the present application provides a lithium battery over-discharge recovery optimization method, the method being applied to a control module of a lithium battery management system, the method comprising:

[0006] In response to the charging time being less than the preset time, determining whether the charging voltage is less than the preset pre-charging voltage, and if so, adjusting the charging current to the preset pre-charging current, clearing the charging time and recalculating the charging time;

[0007] In response to the charging voltage being greater than or equal to the preset pre-charging voltage and the charging time being less than the preset time, entering a constant current fast charging stage;

[0008] In response to the charging voltage being greater than or equal to the preset constant voltage, the constant voltage charging phase is entered, and in response to the charging current being less than the preset termination current, the charging is completed.

[0009] In one embodiment, the lithium battery management system further includes a discharge control module and a battery module, the discharge control module is electrically connected to the control module and the battery module, and the method further includes:

[0010] In response to the discharge voltage being greater than the preset over-discharge protection voltage, the MOS tube G in the discharge control module is controlled to be opened, so that the battery module discharges normally.

[0011] In one embodiment, the method further comprises:

[0012] In response to the discharge voltage being less than or equal to the preset over-discharge protection voltage, the MOS tube G electrode directly connected to the battery module in the discharge control module is controlled to be closed, so that the battery module discharges slowly.

[0013] In one embodiment, the method further includes: stopping charging in response to the charging time being greater than or equal to the preset time.

[0014] In a second aspect, an embodiment of the present application provides a lithium battery management system, the system is used to implement the lithium battery over-discharge recovery optimization method described in the first aspect, the system includes a control module, a battery module and a discharge control module,

[0015] The control module is electrically connected to the battery module and the discharge control module;

[0016] The discharge control module is electrically connected to the control module and the battery module.

[0017] In one embodiment, the discharge control module includes a first MOS transistor and a second MOS transistor.

[0018] The S pole of the first MOS tube is electrically connected to the battery module, the D pole of the first MOS tube is electrically connected to the D pole of the second MOS tube, and the G pole of the first MOS tube is electrically connected to the OD pin in the control module;

[0019] The S pole of the second MOS tube is grounded, and the G pole is electrically connected to the OC pin of the control module.

[0020] In one embodiment, the discharge control module includes a first MOS transistor and a second MOS transistor.

[0021] The control module is used to obtain the discharge voltage, and when the discharge voltage is less than or equal to the preset over-discharge protection voltage, the G pole of the first MOS tube in the discharge control module is controlled to be closed through the OD pin.

[0022] The discharge control module is used to be controlled by the control module so that the battery module cannot discharge normally.

[0023] In one embodiment, the control module is used to obtain a discharge voltage. When the discharge voltage is greater than a preset over-discharge protection voltage, the G pole of the first MOS tube in the discharge control module is controlled to be turned on through the OD pin.

[0024] The discharge control module is used to be controlled by the control module so that the battery module discharges normally.

[0025] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the lithium battery over-discharge recovery optimization method as described in the first aspect above is implemented.

[0026] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the lithium battery over-discharge recovery optimization method as described in the first aspect above.

[0027] The lithium battery over-discharge recovery optimization method and lithium battery management system provided in the embodiments of the present application have at least the following technical effects.

[0028] This application forces the battery to enter a stable current state when the charging time does not exceed the preset time and the charging voltage cannot reach the preset pre-charge voltage, thereby stably reaching the pre-charge voltage, so that the lithium battery can be successfully activated after over-discharge and resume normal charging.

[0029] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 is a schematic diagram of a charging principle according to an exemplary embodiment;

[0032] Figure 2 It is a flow chart of a lithium battery over-discharge recovery optimization method provided in an embodiment of the application;

[0033] Figure 3 is a structural block diagram of a lithium battery management system according to an embodiment of the present application;

[0034] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0036] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0037] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0038] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0039] Lithium batteries are generally not allowed to be overcharged or over-discharged during use, but wearable medical or IoT applications may experience over-discharge of the battery due to long-term non-charging. Large-capacity lithium batteries can be restored by activating the battery cells with a large current when over-discharged. When a small lithium battery is over-discharged, it may fail to activate multiple times or permanently fail to activate without disassembling the device due to the small charging current.

[0040] Figure 1 is a schematic diagram of a charging principle according to an exemplary embodiment. Figure 1 As shown, the charging process of the existing charger mainly includes pre-charge (CC-PRE) - constant current fast charge (CC-FAST) - constant voltage charge (CV-FAST) stages. After the battery is over-discharged, it needs to go through an activation process first. The pre-charge stage takes a long time during charging, and the pre-charge voltage needs to be reached before charging can be resumed. For the activation process, the current activation will fail when encountering the following situations: (1) Whether the pre-charge time has timed out. Usually the pre-charge time threshold is set to 1800s. (2) After pre-charging, when the charging voltage does not reach the pre-charge voltage, the charging process will be disconnected. Therefore, the present application aims to solve the problem that lithium batteries cannot resume charging after being over-discharged.

[0041] Based on the above situation, the embodiments of the present application provide a lithium battery over-discharge recovery optimization method and a lithium battery management system.

[0042] In a first aspect, an embodiment of the present application provides a lithium battery over-discharge recovery optimization method, which is applied to a control module of a lithium battery management system. Figure 2 is a flow chart of a lithium battery over-discharge recovery optimization method provided by the embodiment of the application, such as Figure 2 As shown, the method includes:

[0043] Step S101, in response to the charging time being less than the preset time, it is determined whether the charging voltage is less than the preset pre-charge voltage. If so, the charging current is adjusted to the preset pre-charge current, the charging time is cleared and the charging time is recalculated.

[0044] Optionally, in the pre-charge stage, when the charging voltage does not reach the preset pre-charge voltage, a stable current state is entered, and the pre-charge timer is reset. Specifically, it includes: judging whether the charging time is greater than the preset time, if the charging time is less than the preset time, judging whether the charging voltage is less than the preset pre-charge voltage, if the charging voltage is less than the preset pre-charge voltage, adjusting the charging current to the preset pre-charge current, clearing the charging time and recalculating the charging time. Repeat this step until the charging voltage is greater than or equal to the preset pre-charge voltage. In this way, the charging logic is changed, and when the charging voltage cannot reach the preset pre-charge voltage, it is forced to enter a stable current state, so that the lithium battery can be successfully activated after over-discharge and resume normal charging. Effectively improve the probability of successful activation.

[0045] In one example, the method further includes: in response to a charging time being greater than or equal to a preset time, stopping charging.

[0046] Step S102, in response to the charging voltage being greater than or equal to the preset pre-charging voltage and the charging time being less than the preset time, entering the constant current fast charging stage.

[0047] Optionally, when the charging voltage reaches a preset pre-charge voltage, the constant current fast charging stage is entered. Specifically, it includes: judging whether the charging voltage is greater than or equal to the preset pre-charge voltage and whether the charging time is greater than a preset time, and in response to the charging voltage being greater than or equal to the preset pre-charge voltage and the charging time being less than the preset time, entering the constant current fast charging stage. When the charging voltage is less than the preset pre-charge voltage, or the charging time is greater than or equal to the preset time, charging is stopped.

[0048] Step S103, in response to the charging voltage being greater than or equal to the preset constant voltage, entering the constant voltage charging phase, and in response to the charging current being less than the preset termination current, charging is completed.

[0049] Optionally, it is determined whether the charging voltage is less than a preset constant voltage. In response to the charging voltage being greater than or equal to the preset constant voltage, the constant voltage charging phase is entered. It is determined whether the charging current is less than a preset termination current. In response to the charging current being less than the preset termination current, charging is completed and charging is stopped.

[0050] In one example, the method is applied to a lithium battery management system, and the method also includes: in response to the discharge voltage being less than or equal to a preset over-discharge protection voltage, controlling the MOS tube G electrode directly connected to the battery module in the discharge control module to be closed so that the battery module discharges slowly.

[0051] Optionally, the discharge control module includes a first MOS tube and a second MOS tube, the S pole of the first MOS tube is electrically connected to the battery module, the D pole of the first MOS tube is electrically connected to the D pole of the second MOS tube, and the G pole of the first MOS tube is electrically connected to the OD pin in the control module. The S pole of the second MOS tube is grounded, and the G pole is electrically connected to the OC pin of the control module. When the discharge voltage is less than or equal to the preset over-discharge protection voltage, the G pole (gate) of the first MOS tube in the discharge control module is closed through the OD pin, so that the DS pole of the first MOS tube cannot be turned on. At this time, normal discharge is impossible, and only slow discharge can be performed, but during charging, pre-charging can still be performed through the body diode of the first MOS tube to the body diode of the second MOS tube.

[0052] In actual application, the preset over-discharge protection voltage is adjusted higher through internal logic. For example, the previous over-discharge protection voltage is usually around 2.4V, and it only takes about 1 month from about 2.4V to over-discharge of the battery. However, after adding the discharge control module, the over-discharge protection voltage can be set at any value. When the over-discharge protection voltage is set to 3V, the over-discharge time is increased to about 3 months compared with before. When the over-discharge protection voltage is set to 3.5V, the over-discharge time reaches more than 6 months. Extending the over-discharge protection time is beneficial to improving the life of the lithium battery. In addition, although the over-discharge protection voltage can be set to any value, it is generally set by the control module according to the actual equipment requirements, and the over-discharge protection voltage is usually set to between 3.5V-4.3V. Within this range, not only can the working time be guaranteed, but also when it has not been used for more than 6 months, the battery still does not enter the original over-discharge loss state, resulting in battery damage. In this way, the over-discharge protection time of the lithium battery is extended, the damage of the lithium battery is reduced, and the service life of the lithium battery is increased.

[0053] In one example, the method is applied to a lithium battery management system, which also includes a discharge control module and a battery module, and the discharge control module is electrically connected to the control module and the battery module. The method also includes: in response to the discharge voltage being greater than a preset over-discharge protection voltage, controlling the MOS tube G pole in the discharge control module to open so that the battery module can discharge normally.

[0054] Optionally, when the charging voltage reaches the over-discharge protection voltage, the G pole (gate) of the first MOS tube is controlled to open so that the battery can discharge normally. At this time, the G poles of the first MOS tube and the second MOS tube are both in the on state. The over-discharge protection voltage can be set by the control module according to the actual equipment requirements, and the over-discharge protection voltage is usually set to between 3.5V and 4.3V.

[0055] In summary, when the charging voltage cannot reach the preset pre-charge voltage, the present application forces the battery to enter a stable current state, thereby stably reaching the pre-charge voltage. This allows the lithium battery to be successfully activated after over-discharge and resume normal charging. At the same time, a discharge control module is added to the system to adjust the over-discharge protection voltage, and the battery discharge is controlled by controlling the G pole of the first MOS tube to be turned on or off, thereby extending the over-discharge protection time of the lithium battery, reducing damage to the lithium battery, and increasing the service life of the lithium battery.

[0056] In a second aspect, an embodiment of the present application provides a lithium battery management system, which is used in the lithium battery over-discharge recovery optimization method of the first aspect. Figure 3 is a structural block diagram of a lithium battery management system according to an embodiment of the present application, such as Figure 3 As shown, the system includes a control module 100, a battery module 200 and a discharge control module 300. The control module 100 is electrically connected to the battery module 200 and the discharge control module 300. The discharge control module 300 is electrically connected to the control module 100 and the battery module 200. The battery module includes a battery and a temperature sensor for monitoring the temperature of the lithium battery.

[0057] In one example, reference Figure 3 The discharge control module includes a first MOS tube (FET1) and a second MOS tube (FET2), wherein the S pole of the first MOS tube is electrically connected to the battery module, the D pole of the first MOS tube is electrically connected to the D pole of the second MOS tube, and the G pole of the first MOS tube is electrically connected to the OD pin in the control module. The S pole of the second MOS tube is grounded, and the G pole is electrically connected to the OC pin of the control module.

[0058] In one example, the discharge control module includes a first MOS tube and a second MOS tube, and the control module is used to obtain a discharge voltage. When the discharge voltage is less than or equal to a preset over-discharge protection voltage, the G pole of the first MOS tube in the discharge control module is controlled to be closed through the OD pin. The discharge control module is used to be controlled by the control module so that the battery module cannot discharge normally. Optionally, at this time, the DS pole of the first MOS tube cannot be turned on, and cannot discharge normally, but can only discharge slowly, but during charging, pre-charging can still be performed through the body diode of the first MOS tube to the body diode of the second MOS tube.

[0059] In one example, the control module is used to obtain the discharge voltage, and when the discharge voltage is greater than the preset over-discharge protection voltage, the G pole of the first MOS tube in the discharge control module is controlled to be turned on through the OD pin. The discharge control module is used to be controlled by the control module so that the battery module discharges normally.

[0060] To summarize, the present application adds a discharge control module to the lithium battery management system, adjusts the over-discharge protection voltage, controls the battery discharge by controlling the G pole of the first MOS tube to be turned on or off, extends the over-discharge protection time of the lithium battery, reduces lithium battery damage, and increases the service life of the lithium battery.

[0061] In a third aspect, an embodiment of the present application provides an electronic device, Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the lithium battery over-discharge recovery optimization method provided in the first aspect is implemented. Figure 4 The electronic device 60 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0062] The electronic device 60 may be in the form of a general-purpose computing device, for example, it may be a server device. The components of the electronic device 60 may include but are not limited to: at least one processor 61, at least one memory 62, and a bus 63 connecting different system components (including the memory 62 and the processor 61).

[0063] The bus 63 includes a data bus, an address bus, and a control bus.

[0064] The memory 62 may include a volatile memory, such as a random access memory (RAM) 621 and / or a cache memory 622 , and may further include a read-only memory (ROM) 623 .

[0065] The memory 62 may also include a program / utility 625 having a set (at least one) of program modules 624, such program modules 624 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0066] The processor 61 executes various functional applications and data processing by running the computer programs stored in the memory 62, such as the lithium battery over-discharge recovery optimization method provided in the first aspect of the present application.

[0067] The electronic device 60 may also communicate with one or more external devices 64 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 65. Furthermore, the model-generated device 60 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 66. As shown, the network adapter 66 communicates with other modules of the model-generated device 60 via a bus 63. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the model-generated device 60, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (RAID) systems, tape drives, and data backup storage systems.

[0068] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0069] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a program stored thereon, and when the program is executed by a processor, the lithium battery over-discharge recovery optimization method provided in the first aspect is implemented.

[0070] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0071] In a possible implementation manner, the present invention can also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the lithium battery over-discharge recovery optimization method provided in the first aspect.

[0072] The program code for executing the present invention may be written in any combination of one or more programming languages, and may be executed entirely on a user device, partially on a user device, as an independent software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A lithium battery over-discharge recovery optimization method, characterized in that: The method is applied to a control module of a lithium battery management system, and the method comprises: In response to the charging time being less than the preset time, determining whether the charging voltage is less than the preset pre-charging voltage, and if so, adjusting the charging current to the preset pre-charging current, clearing the charging time and recalculating the charging time; In response to the charging voltage being greater than or equal to the preset pre-charging voltage and the charging time being less than the preset time, entering a constant current fast charging stage; In response to the charging voltage being greater than or equal to a preset constant voltage, a constant voltage charging phase is entered, and in response to the charging current being less than a preset termination current, charging is completed.

2. The lithium battery over-discharge recovery optimization method according to claim 1, characterized in that: The lithium battery management system further includes a discharge control module and a battery module, wherein the discharge control module is electrically connected to the control module and the battery module, and the method further includes: In response to the discharge voltage being greater than the preset over-discharge protection voltage, the MOS tube G in the discharge control module is controlled to be opened, so that the battery module discharges normally.

3. The lithium battery over-discharge recovery optimization method according to claim 2, characterized in that: The method further comprises: In response to the discharge voltage being less than or equal to the preset over-discharge protection voltage, the MOS tube G electrode directly connected to the battery module in the discharge control module is controlled to be closed, so that the battery module discharges slowly.

4. The lithium battery over-discharge recovery optimization method according to claim 1, characterized in that: The method further includes: stopping charging in response to the charging time being greater than or equal to the preset time.

5. A lithium battery management system, characterized in that: The system is used to implement the lithium battery over-discharge recovery optimization method according to any one of claims 1 to 4, and the system includes a control module, a battery module and a discharge control module. The control module is electrically connected to the battery module and the discharge control module; The discharge control module is electrically connected to the control module and the battery module.

6. The lithium battery management system according to claim 5, characterized in that: The discharge control module includes a first MOS tube and a second MOS tube. The S pole of the first MOS tube is electrically connected to the battery module, the D pole of the first MOS tube is electrically connected to the D pole of the second MOS tube, and the G pole of the first MOS tube is electrically connected to the OD pin in the control module; The S pole of the second MOS tube is grounded, and the G pole is electrically connected to the OC pin of the control module.

7. The lithium battery management system according to claim 6, characterized in that: The discharge control module includes a first MOS tube and a second MOS tube. The control module is used to obtain a discharge voltage, and when the discharge voltage is less than or equal to a preset over-discharge protection voltage, the G pole of the first MOS tube in the discharge control module is controlled to be closed through the OD pin; The discharge control module is used to be controlled by the control module so that the battery module cannot discharge normally.

8. The lithium battery management system according to claim 6, characterized in that: The control module is used to obtain a discharge voltage, and when the discharge voltage is greater than a preset over-discharge protection voltage, the G pole of the first MOS tube in the discharge control module is controlled to be turned on through the OD pin; The discharge control module is used to be controlled by the control module so that the battery module discharges normally.

9. An electronic device, characterized in that: include Memory, processor, and A computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the lithium battery over-discharge recovery optimization method according to any one of claims 1 to 4 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the lithium battery over-discharge recovery optimization method according to any one of claims 1 to 4 is implemented.

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