Battery charging management method and apparatus, and electronic device and storage medium

Abstract

Provided in the present application are a battery charging management method and apparatus, and an electronic device and a storage medium. The method comprises: identifying the current charging mode of a target battery; when the current charging mode is a fast charging mode, acquiring a fast charging policy in the fast charging mode, wherein the fast charging policy comprises a constant-current fast charging stage and a constant-voltage fast charging stage, a fast-charging termination voltage in the constant-current fast charging stage is determined by means of increasing an initial termination voltage on the basis of electrochemical characteristics of a battery cell of the target battery, and a fast-charging cut-off current in the constant-voltage fast charging stage is determined by means of increasing an initial cut-off current on the basis of ensuring a result of consistency between charging capacities; and charging the target battery on the basis of the fast charging policy. In this way, by means of increasing a termination voltage in a constant-current stage and increasing a cut-off current in a constant-voltage stage, the present application can effectively shorten the charging time and improve the charging efficiency.

Description

A battery charging management method, apparatus, electronic device, and storage medium

[0001] This application claims priority to Chinese Patent Application No. 202510308769.8, filed on March 14, 2025, entitled “A method, apparatus, electronic device and storage medium for battery charging”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of rechargeable battery technology, and in particular to a battery charging management method, apparatus, electronic device, and storage medium. Background Technology

[0003] With the widespread adoption of mobile computing devices, laptops, as core productivity tools, have seen battery life and charging efficiency become key indicators of user experience. Currently, the industry generally uses lithium-ion / lithium polymer batteries as energy carriers, and charging management strategies are mostly based on the traditional constant current-constant voltage (CC-CV) mode, controlling the charging process by preset upper limit voltage and cutoff current of the battery cell standard. However, while pursuing safety and lifespan, this mode has exposed significant problems such as low charging efficiency and excessively long constant voltage (CV) phase at the end, making it difficult to meet users' urgent need for rapid charging. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a battery charging management method, apparatus, electronic device and storage medium, which can effectively shorten the charging time and improve the charging efficiency by increasing the termination voltage of the constant current stage and increasing the cutoff current of the constant voltage stage.

[0005] This application provides a battery charging management method, the management method including:

[0006] Identify the current charging mode of the target battery;

[0007] When the current charging mode is fast charging mode, a fast charging strategy under fast charging mode is obtained; wherein, the fast charging strategy includes a constant current fast charging stage and a constant voltage fast charging stage; the fast charging termination voltage in the constant current fast charging stage is determined by increasing the initial termination voltage based on the cell electrochemical characteristics of the target battery; the fast charging cutoff current in the constant voltage fast charging stage is determined by increasing the initial cutoff current while ensuring the consistency of charging capacity.

[0008] The target battery is charged according to the fast charging strategy.

[0009] Optionally, charging the target battery according to the fast charging strategy includes:

[0010] The target battery is charged with a constant current using a first constant current, and the current fast charging voltage is monitored during the constant current fast charging phase.

[0011] When the current fast charging voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current fast charging voltage under the constant current fast charging stage is monitored.

[0012] When the current fast charging voltage reaches the fast charging termination voltage, the target battery is charged at a constant voltage using the fast charging termination voltage, and the current fast charging current under the constant voltage fast charging stage is monitored.

[0013] Charging stops when the current fast charging current reaches the fast charging cutoff current.

[0014] Optionally, when the current charging mode is a regular charging mode, the management method further includes:

[0015] The target battery is charged with a first constant current, and the current monitoring voltage is monitored during the normal constant current phase.

[0016] When the current monitoring voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current monitoring voltage is monitored during the normal constant current phase.

[0017] When the current monitoring voltage reaches the initial termination voltage, the target battery is charged at a constant voltage using the initial termination voltage, and the current monitoring current is monitored during the normal constant voltage phase.

[0018] Charging stops when the current being monitored reaches the initial cutoff current.

[0019] Optionally, the fast charging termination voltage can be determined through the following steps:

[0020] Based on the cell electrochemical characteristics of the target battery, determine the maximum safe voltage variation amplitude that the target battery can withstand;

[0021] The fast charging termination voltage is determined based on the maximum safe voltage change amplitude and the initial termination voltage.

[0022] Optionally, determining the fast charging termination voltage based on the maximum safe voltage change amplitude and the initial termination voltage includes:

[0023] The sum of the initial termination voltage and the maximum safe voltage change amplitude is determined as the fast charging termination voltage.

[0024] Optionally, the fast charging cutoff current can be determined through the following steps:

[0025] Under normal charging mode, when the current monitored current reaches the initial cutoff current, the first charging capacity of the target battery is obtained;

[0026] The initial cutoff current is increased sequentially at preset intervals, and a candidate cutoff current is obtained after each change.

[0027] For each candidate cutoff current, obtain the second charging capacity of the target battery when the current reaches the candidate cutoff current;

[0028] The fast charging cutoff current is determined by the maximum candidate cutoff current corresponding to the second charging capacity that satisfies the consistency condition with the first charging capacity.

[0029] Optionally, the second charging capacity that satisfies the consistency condition with the first charging capacity is determined through the following steps:

[0030] Determine the capacity error between the second charging capacity and the first charging capacity;

[0031] When the capacity error is within a preset error range, it is determined that the second charging capacity and the first charging capacity meet the consistency condition.

[0032] This application embodiment also provides a battery charging management device, the management device comprising:

[0033] The identification module is used to identify the current charging mode of the target battery;

[0034] The acquisition module is used to acquire a fast charging strategy under the current charging mode when the current charging mode is fast charging mode; wherein, the fast charging strategy includes a constant current fast charging stage and a constant voltage fast charging stage; the fast charging termination voltage in the constant current fast charging stage is determined by increasing the initial termination voltage based on the cell electrochemical characteristics of the target battery; the fast charging cutoff current in the constant voltage fast charging stage is determined by increasing the initial cutoff current while ensuring the consistency of charging capacity.

[0035] A charging module is used to charge the target battery according to the fast charging strategy.

[0036] Optionally, when the charging module is used to charge the target battery according to the fast charging strategy, the charging module is used to:

[0037] The target battery is charged with a constant current using a first constant current, and the current fast charging voltage is monitored during the constant current fast charging phase.

[0038] When the current fast charging voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current fast charging voltage under the constant current fast charging stage is monitored.

[0039] When the current fast charging voltage reaches the fast charging termination voltage, the target battery is charged at a constant voltage using the fast charging termination voltage, and the current fast charging current under the constant voltage fast charging stage is monitored.

[0040] Charging stops when the current fast charging current reaches the fast charging cutoff current.

[0041] Optionally, the charging module is further used for:

[0042] When the current charging mode is the normal charging mode, the target battery is charged with a constant current using a first constant current, and the current monitoring voltage under the normal constant current stage is monitored.

[0043] When the current monitoring voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current monitoring voltage is monitored during the normal constant current phase.

[0044] When the current monitoring voltage reaches the initial termination voltage, the target battery is charged at a constant voltage using the initial termination voltage, and the current monitoring current is monitored during the normal constant voltage phase.

[0045] Charging stops when the current being monitored reaches the initial cutoff current.

[0046] Optionally, the management device further includes a voltage determination module, which is used to determine the fast charging termination voltage through the following steps:

[0047] Based on the cell electrochemical characteristics of the target battery, determine the maximum safe voltage variation amplitude that the target battery can withstand;

[0048] The fast charging termination voltage is determined based on the maximum safe voltage change amplitude and the initial termination voltage.

[0049] Optionally, when the voltage determination module determines the fast charging termination voltage based on the maximum safe voltage change amplitude and the initial termination voltage, the voltage determination module is used to:

[0050] The sum of the initial termination voltage and the maximum safe voltage change amplitude is determined as the fast charging termination voltage.

[0051] Optionally, the management device further includes a current determination module, which is used to determine the fast charging cutoff current through the following steps:

[0052] Under normal charging mode, when the current monitored current reaches the initial cutoff current, the first charging capacity of the target battery is obtained;

[0053] The initial cutoff current is increased sequentially at preset intervals, and a candidate cutoff current is obtained after each change.

[0054] For each candidate cutoff current, obtain the second charging capacity of the target battery when the current reaches the candidate cutoff current;

[0055] The fast charging cutoff current is determined by the maximum candidate cutoff current corresponding to the second charging capacity that satisfies the consistency condition with the first charging capacity.

[0056] Optionally, the current determination module is further configured to determine the second charging capacity that satisfies the consistency condition with the first charging capacity through the following steps:

[0057] Determine the capacity error between the second charging capacity and the first charging capacity;

[0058] When the capacity error is within a preset error range, it is determined that the second charging capacity and the first charging capacity meet the consistency condition.

[0059] This application embodiment also provides an electronic device, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the management method described above are performed.

[0060] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the management method described above.

[0061] This application provides a battery charging management method, apparatus, electronic device, and storage medium. The method includes: identifying the current charging mode of a target battery; when the current charging mode is a fast charging mode, obtaining a fast charging strategy under the fast charging mode; wherein the fast charging strategy includes a constant current fast charging stage and a constant voltage fast charging stage; the fast charging termination voltage in the constant current fast charging stage is determined by increasing the initial termination voltage based on the cell electrochemical characteristics of the target battery; the fast charging cutoff current in the constant voltage fast charging stage is determined by increasing the initial cutoff current while ensuring consistent charging capacity; and charging the target battery according to the fast charging strategy.

[0062] Thus, compared to existing battery charging solutions, this application has the following advantages:

[0063] 1. Fully utilize the voltage withstand capability of the cell's electrochemical system to improve charging efficiency;

[0064] 2. Increasing the charging voltage during the constant current charging stage, while ensuring the safety of the battery cells, can further improve charging efficiency;

[0065] 3. Increase the cutoff current while ensuring no loss of charging capacity, meeting the requirements for safe and healthy charging of batteries;

[0066] 4. It shortens charging time, increases charging speed, and reduces the time required to fully charge the battery.

[0067] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0068] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0069] Figure 1 is a flowchart of a battery charging management method provided in an embodiment of this application;

[0070] Figure 2 shows one example of the charging results corresponding to different charging modes provided in this application;

[0071] Figure 3 shows a second example of charging results corresponding to different charging modes provided in this application;

[0072] Figure 4 is a schematic diagram of one of the structures of a battery charging management device provided in an embodiment of this application;

[0073] Figure 5 is a second schematic diagram of the structure of a battery charging management device provided in an embodiment of this application;

[0074] Figure 6 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0075] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, every other embodiment obtained by those skilled in the art without inventive effort falls within the scope of protection of this application.

[0076] First, the applicable application scenarios of this application are introduced. This application can be applied to the field of batteries; specifically, it can be applied to the field of rechargeable batteries. A rechargeable battery is a type of battery that can be charged and reused multiple times. It converts electrical energy into chemical energy through an external power source for storage, and then converts the chemical energy back into electrical energy when needed. Common types include: nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, and lithium polymer batteries.

[0077] With the widespread adoption of mobile computing devices, laptops, as core productivity tools, have seen battery life and charging efficiency become key indicators of user experience. Currently, the industry generally uses lithium-ion / lithium polymer batteries as energy carriers, and charging management strategies are mostly based on the traditional constant current-constant voltage (CC-CV) mode, controlling the charging process by preset upper limit voltage and cutoff current of the battery cell standard. However, while pursuing safety and lifespan, this mode has exposed significant problems such as low charging efficiency and excessively long constant voltage (CV) phase at the end, making it difficult to meet users' urgent need for rapid charging.

[0078] Based on this, embodiments of this application provide a battery charging management method, apparatus, electronic device, and storage medium. By increasing the termination voltage of the constant current stage and increasing the cutoff current of the constant voltage stage, the charging time can be effectively shortened and the charging efficiency improved.

[0079] Please refer to Figure 1, which is a flowchart of a battery charging management method provided in an embodiment of this application. As shown in Figure 1, the management method provided in this embodiment includes:

[0080] S101. Identify the current charging mode of the target battery;

[0081] S102. When the current charging mode is fast charging mode, obtain the fast charging strategy in fast charging mode;

[0082] S103. Charge the target battery according to the fast charging strategy.

[0083] In one embodiment provided in this application, firstly, the charging state of the target battery is identified in real time. When it is determined that the target battery has entered the charging state, the current required charging mode of the target battery is determined. Then, when it is determined that the current charging mode of the target battery is a fast charging mode, the fast charging strategy of the target battery in the fast charging mode is obtained. Finally, the target battery is charged according to the determined fast charging strategy, thereby effectively improving the charging efficiency.

[0084] The exemplary steps of the embodiments of this application are described below:

[0085] For step S101, before executing step S101, a charging detection is performed. Once it is determined that charging has started, step S101 is executed, which involves identifying the current charging mode of the target battery.

[0086] Specifically, when identifying the current charging mode of the target battery, it can be determined based on the charging command information issued by the device where the target battery is located.

[0087] The charging command information can be issued by the user after operating the device containing the target battery, or it can be pre-set. No limitation is made here.

[0088] Here, the target battery's current charging module can be in fast charging mode or regular charging mode. Regular charging mode takes longer than fast charging mode.

[0089] Regarding step S102, the fast charging strategy includes a constant current fast charging stage and a constant voltage fast charging stage; the fast charging termination voltage in the constant current fast charging stage is determined by increasing the initial termination voltage based on the cell electrochemical characteristics of the target battery; the fast charging cutoff current in the constant voltage fast charging stage is determined by increasing the initial cutoff current while ensuring the consistency of charging capacity.

[0090] The execution order of the constant current fast charging stage and the constant voltage fast charging stage in the fast charging strategy is as follows: the constant current fast charging stage is executed first, followed by the constant voltage fast charging stage.

[0091] The fast charging termination voltage in the constant current fast charging stage is used to determine the condition for switching from the constant current fast charging stage to the constant voltage fast charging stage. The fast charging cutoff current in the constant voltage fast charging stage is used to determine the condition for the end of charging.

[0092] In one embodiment provided in this application, the fast charging termination voltage is determined through the following steps:

[0093] S201. Based on the electrochemical characteristics of the target battery cell, determine the maximum safe voltage variation amplitude that the target battery can withstand.

[0094] S202. Determine the fast charging termination voltage based on the maximum safe voltage change amplitude and the initial termination voltage.

[0095] Regarding step S201, it should be noted that the cell electrochemical characteristics of a battery refer to the influence of internal chemical reactions and material properties on its performance, safety, and lifespan.

[0096] In this step, when determining the maximum safe voltage change amplitude that the target battery can withstand based on the cell electrochemical characteristics of the target battery, it may specifically include: based on the electrochemical type, internal structure and other information of the target battery, and in combination with the actual application scenario (such as fast charging, slow charging, high-rate discharging, etc.), determining the maximum safe voltage change amplitude that the target battery can withstand compared to the initial termination voltage in the conventional mode, under the premise of meeting charging safety.

[0097] Regarding step S202, in one embodiment provided in this application, determining the fast charging termination voltage based on the maximum safe voltage change amplitude and the initial termination voltage includes: determining the fast charging termination voltage as the sum of the initial termination voltage and the maximum safe voltage change amplitude.

[0098] For example, through multiple experiments, the maximum safe voltage change amplitude in this application can be 50mV.

[0099] Continuing with step S102, in one embodiment provided in this application, the fast charging cutoff current is determined through the following steps:

[0100] S301. Under normal charging mode, when the current monitored current reaches the initial cutoff current, the first charging capacity of the target battery is obtained.

[0101] S302. The initial cutoff current is increased sequentially according to a preset change interval, and a candidate cutoff current is obtained after each change.

[0102] S303. For each candidate cutoff current, obtain the second charging capacity of the target battery when the current reaches the candidate cutoff current;

[0103] S304. Determine the fast charging cutoff current by the maximum candidate cutoff current corresponding to the second charging capacity that satisfies the consistency condition with the first charging capacity.

[0104] For step S301, this step includes: obtaining the conventional charging strategy in the conventional charging mode, charging the target battery according to the conventional charging strategy (stopping charging when the current monitoring current reaches the initial cutoff current), and determining the first charging capacity of the target battery after charging is completed.

[0105] In addition, the first charging capacity can also be determined based on the manufacturer's product parameter information.

[0106] Regarding step S302, the preset variation interval can be adaptively set according to the actual situation, and the number of candidate cutoff currents determined can also be adaptively set according to the actual situation.

[0107] For example, when the initial cutoff current is 0.05C, the preset variation interval can be set to 0.01C, or other values ​​can be set, which is not limited here.

[0108] For step S303, this step includes, after each candidate cutoff current is determined, performing a charging experiment on the target battery, stopping charging when the current in the constant voltage charging stage reaches the candidate cutoff current, and obtaining the second charging capacity that the target battery can achieve after the charging ends with the candidate cutoff current as the charging end condition.

[0109] For step S304, this step includes: for each second charging capacity, identifying whether the second charging capacity and the first charging capacity meet the consistency condition; and determining the maximum value among the candidate cutoff currents corresponding to the second charging capacity that meets the consistency condition as the fast charging cutoff current.

[0110] For example, the fast charging cutoff current determined in this application can be 0.15C, while the initial cutoff current under normal charging conditions is generally 0.05C. This shortens the end-of-line constant voltage charging time while maintaining the charging capacity within a acceptable range, maximizing charging efficiency while meeting the requirement of the same capacity.

[0111] Regarding step S304, in one embodiment provided in this application, the second charging capacity that satisfies the consistency condition with the first charging capacity is determined by the following steps: determining the capacity error between the second charging capacity and the first charging capacity; when the capacity error is within a preset error range, determining that the second charging capacity and the first charging capacity satisfy the consistency condition.

[0112] Here, the capacity error can be the difference between the first charging capacity and the second charging capacity. The error range can be adaptively set.

[0113] Regarding step S103, in one embodiment provided in this application, charging the target battery according to the fast charging strategy includes:

[0114] S1031. The target battery is charged with a constant current using a first constant current, and the current fast charging voltage is monitored during the constant current fast charging phase.

[0115] S1032. When the current fast charging voltage reaches the switching voltage, the target battery is charged with constant current using a second constant current, and the current fast charging voltage under the constant current fast charging stage is monitored.

[0116] S1033. When the current fast charging voltage reaches the fast charging termination voltage, the target battery is charged with constant voltage using the fast charging termination voltage, and the current fast charging current under the constant voltage fast charging stage is monitored.

[0117] S1034. When the current fast charging current reaches the fast charging cutoff current, charging is stopped.

[0118] Here, the first constant current and the second constant current can be set adaptively, but the first constant current is higher than the second constant current, and the second constant current is higher than the fast charging cutoff current.

[0119] The switching voltage can be set adaptively, but the switching voltage is lower than the fast charging termination voltage.

[0120] Furthermore, in another embodiment provided in this application, when the current charging mode is a regular charging mode, the management method further includes:

[0121] S401. The target battery is charged with a first constant current, and the current monitoring voltage is monitored during the normal constant current phase.

[0122] S402. When the current monitoring voltage reaches the switching voltage, the target battery is charged with a second constant current, and the current monitoring voltage under the normal constant current stage is monitored.

[0123] S403. When the current monitoring voltage reaches the initial termination voltage, the target battery is charged at a constant voltage using the initial termination voltage, and the current monitoring current is monitored during the normal constant voltage phase.

[0124] S404. When the current monitored current reaches the initial cutoff current, charging is stopped.

[0125] Here, the first constant current and the second constant current can be adaptively set, but the first constant current is higher than the second constant current, and the second constant current is higher than the initial cutoff current.

[0126] The switching voltage can be adaptively set, but the switching voltage is lower than the initial termination voltage.

[0127] To illustrate the advantages of this solution, this application provides the following experimental data for demonstration. Please refer to Figure 2, which is one example of the charging results corresponding to different charging modes provided in this application. As shown in Figure 2, both the conventional charging mode and the fast charging mode include two constant current charging stages (a and b) and one constant voltage charging stage (c). CC1 represents the first constant current, CC2 represents the second constant current, CC3 represents the initial cutoff current, CC4 represents the fast charging cutoff current, CV1 represents the switching voltage, CV2 represents the initial termination voltage, and CV2+50mV represents the fast charging termination voltage. Here, the fast charging mode is based on the conventional charging mode, but increases the termination voltage of constant current charging to CV2+50mV and increases the cutoff current of constant voltage charging CC4 = 0.15C. C1 represents the first charging capacity, and C2 represents the second charging capacity. C1 and C2 are basically equal, so they also meet the consistency condition. As shown in Figure 2, the charging time used in the fast charging mode is shortened by 25% compared to the charging time in the conventional charging mode.

[0128] Furthermore, to further illustrate the advantages of this solution, please refer to Figure 3, which is a second example of the charging results corresponding to different charging modes provided in this application. As shown in Figure 3, compared with the conventional charging mode, the fast charging mode in this solution further improves charging efficiency and shortens charging time while meeting the charging capacity requirements.

[0129] Thus, this solution has the following advantages over existing technologies: it fully utilizes the voltage tolerance of the cell's electrochemical system to improve charging efficiency; it increases the charging voltage during the constant current charging stage while ensuring cell safety, which can further improve charging efficiency; it increases the cutoff current and ensures no loss of charging capacity, meeting the requirements for safe and healthy charging of batteries; it shortens charging time, increases charging speed, and reduces the time required for the battery to fully charge.

[0130] Based on the same inventive concept, this application also provides a management device corresponding to the management method. Since the principle of the device in this application to solve the problem is similar to the management method described above in this application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be described again.

[0131] Please refer to Figures 4 and 5. Figure 4 is a schematic diagram of one structure of a battery charging management device provided in an embodiment of this application, and Figure 5 is a schematic diagram of another structure of a battery charging management device provided in an embodiment of this application. As shown in Figure 4, the management device 400 includes:

[0132] The identification module 410 is used to identify the current charging mode of the target battery;

[0133] The acquisition module 420 is used to acquire a fast charging strategy under the fast charging mode when the current charging mode is fast charging mode; wherein, the fast charging strategy includes a constant current fast charging stage and a constant voltage fast charging stage; the fast charging termination voltage in the constant current fast charging stage is determined by increasing the initial termination voltage based on the cell electrochemical characteristics of the target battery; the fast charging cutoff current in the constant voltage fast charging stage is determined by increasing the initial cutoff current while ensuring the consistency of charging capacity.

[0134] The charging module 430 is used to charge the target battery according to the fast charging strategy.

[0135] Optionally, when the charging module 430 is used to charge the target battery according to the fast charging strategy, the charging module 430 is used to:

[0136] The target battery is charged with a constant current using a first constant current, and the current fast charging voltage is monitored during the constant current fast charging phase.

[0137] When the current fast charging voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current fast charging voltage under the constant current fast charging stage is monitored.

[0138] When the current fast charging voltage reaches the fast charging termination voltage, the target battery is charged at a constant voltage using the fast charging termination voltage, and the current fast charging current under the constant voltage fast charging stage is monitored.

[0139] Charging stops when the current fast charging current reaches the fast charging cutoff current.

[0140] Optionally, the charging module 430 is further configured to:

[0141] When the current charging mode is the normal charging mode, the target battery is charged with a constant current using a first constant current, and the current monitoring voltage under the normal constant current stage is monitored.

[0142] When the current monitoring voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current monitoring voltage is monitored during the normal constant current phase.

[0143] When the current monitoring voltage reaches the initial termination voltage, the target battery is charged at a constant voltage using the initial termination voltage, and the current monitoring current is monitored during the normal constant voltage phase.

[0144] Charging stops when the current being monitored reaches the initial cutoff current.

[0145] Optionally, as shown in Figure 5, the management device 400 further includes a voltage determination module 440, which is used to determine the fast charging termination voltage through the following steps:

[0146] Based on the cell electrochemical characteristics of the target battery, determine the maximum safe voltage variation amplitude that the target battery can withstand;

[0147] The fast charging termination voltage is determined based on the maximum safe voltage change amplitude and the initial termination voltage.

[0148] Optionally, when the voltage determination module 440 determines the fast charging termination voltage based on the maximum safe voltage change amplitude and the initial termination voltage, the voltage determination module 440 is used to:

[0149] The sum of the initial termination voltage and the maximum safe voltage change amplitude is determined as the fast charging termination voltage.

[0150] Optionally, the management device 400 further includes a current determination module 450, which is used to determine the fast charging cutoff current through the following steps:

[0151] Under normal charging mode, when the current monitored current reaches the initial cutoff current, the first charging capacity of the target battery is obtained;

[0152] The initial cutoff current is increased sequentially at preset intervals, and a candidate cutoff current is obtained after each change.

[0153] For each candidate cutoff current, obtain the second charging capacity of the target battery when the current reaches the candidate cutoff current;

[0154] The fast charging cutoff current is determined by the maximum candidate cutoff current corresponding to the second charging capacity that satisfies the consistency condition with the first charging capacity.

[0155] Optionally, the current determination module 450 is further configured to determine the second charging capacity that satisfies the consistency condition with the first charging capacity through the following steps:

[0156] Determine the capacity error between the second charging capacity and the first charging capacity;

[0157] When the capacity error is within a preset error range, it is determined that the second charging capacity and the first charging capacity meet the consistency condition.

[0158] Please refer to Figure 6, which is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. As shown in Figure 6, the electronic device 600 includes a processor 610, a memory 620, and a bus 630.

[0159] The memory 620 stores machine-readable instructions that can be executed by the processor 610. When the electronic device 600 is running, the processor 610 and the memory 620 communicate through the bus 630. When the machine-readable instructions are executed by the processor 610, the steps in the method embodiments shown in Figures 1 to 3 above can be performed. For specific implementation methods, please refer to the method embodiments, which will not be repeated here.

[0160] This application also provides a computer-readable storage medium storing a computer program. When the computer program is run by a processor, it can execute the steps in the method embodiments shown in Figures 1 to 3 above. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0161] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0162] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0163] The units described as separate components may or may not be physically separate. 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 units can be selected to achieve the purpose of this embodiment according to actual needs.

[0164] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0165] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0166] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of managing charging of a battery, characterized by, The management method includes: Identify the current charging mode of the target battery; When the current charging mode is fast charging mode, a fast charging strategy under fast charging mode is obtained; wherein, the fast charging strategy includes a constant current fast charging stage and a constant voltage fast charging stage; the fast charging termination voltage in the constant current fast charging stage is determined by increasing the initial termination voltage based on the cell electrochemical characteristics of the target battery; the fast charging cutoff current in the constant voltage fast charging stage is determined by increasing the initial cutoff current while ensuring the consistency of charging capacity. The target battery is charged according to the fast charging strategy.

2. The management method according to claim 1, characterized in that, The step of charging the target battery according to the fast charging strategy includes: The target battery is charged with a constant current using a first constant current, and the current fast charging voltage is monitored during the constant current fast charging phase. When the current fast charging voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current fast charging voltage under the constant current fast charging stage is monitored. When the current fast charging voltage reaches the fast charging termination voltage, the target battery is charged at a constant voltage using the fast charging termination voltage, and the current fast charging current under the constant voltage fast charging stage is monitored. Charging stops when the current fast charging current reaches the fast charging cutoff current.

3. The management method according to claim 1, characterized by, When the current charging mode is the normal charging mode, the management method further includes: The target battery is charged with a first constant current, and the current monitoring voltage is monitored during the normal constant current phase. When the current monitoring voltage reaches the switching voltage, the target battery is charged with a constant current using a second constant current, and the current monitoring voltage is monitored during the normal constant current phase. When the current monitoring voltage reaches the initial termination voltage, the target battery is charged at a constant voltage using the initial termination voltage, and the current monitoring current is monitored during the normal constant voltage phase. Charging stops when the current being monitored reaches the initial cutoff current.

4. The management method according to claim 1, characterized by, The fast charging termination voltage is determined by the following steps: Based on the cell electrochemical characteristics of the target battery, determine the maximum safe voltage variation amplitude that the target battery can withstand; The fast charging termination voltage is determined based on the maximum safe voltage change amplitude and the initial termination voltage.

5. The management method according to claim 4, characterized in that, The step of determining the fast charging termination voltage based on the maximum safe voltage change amplitude and the initial termination voltage includes: The sum of the initial termination voltage and the maximum safe voltage change amplitude is determined as the fast charging termination voltage.

6. The management method according to claim 1, characterized by, The fast charging cutoff current is determined by the following steps: Under normal charging mode, when the current monitored current reaches the initial cutoff current, the first charging capacity of the target battery is obtained. The initial cutoff current is increased sequentially at preset intervals, and a candidate cutoff current is obtained after each change. For each candidate cutoff current, obtain the second charging capacity of the target battery when the current reaches the candidate cutoff current; The fast charging cutoff current is determined by the maximum candidate cutoff current corresponding to the second charging capacity that satisfies the consistency condition with the first charging capacity.

7. The management method according to claim 6, characterized in that, The second charging capacity that satisfies the consistency condition with the first charging capacity is determined by the following steps: Determine the capacity error between the second charging capacity and the first charging capacity; When the capacity error is within a preset error range, it is determined that the second charging capacity and the first charging capacity meet the consistency condition.

8. A battery charge management device, characterized by, The management device includes: The identification module is used to identify the current charging mode of the target battery; The acquisition module is used to acquire a fast charging strategy under the current charging mode when the current charging mode is fast charging mode; wherein, the fast charging strategy includes a constant current fast charging stage and a constant voltage fast charging stage; the fast charging termination voltage in the constant current fast charging stage is determined by increasing the initial termination voltage based on the cell electrochemical characteristics of the target battery; the fast charging cutoff current in the constant voltage fast charging stage is determined by increasing the initial cutoff current while ensuring the consistency of charging capacity. A charging module is used to charge the target battery according to the fast charging strategy.

9. An electronic device, comprising: include: The device includes a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus, and the machine-readable instructions are executed by the processor to perform the steps of the management method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the management method as described in any one of claims 1 to 7.

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