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

Abstract

The invention provides a battery charging management method and apparatus, an electronic device and a storage medium. The method comprises the steps of identifying a current charging mode of a target battery; when the current charging mode is a quick charging mode, acquiring a quick charging strategy in the quick charging mode; wherein the fast charging strategy comprises 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 according to the electrochemical characteristics of the battery cell of the target battery; the fast charging cut-off current in the constant-voltage fast charging stage is determined by increasing the initial cut-off current on the basis of ensuring the charging capacity consistency result; and charging the target battery according to the fast charging strategy. Therefore, by improving the end voltage of the constant current stage and increasing the cut-off current of the constant voltage stage, the charging time can be effectively shortened, and the charging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of rechargeable batteries, and in particular, to a battery charging management method, device, electronic device, and storage medium. Background Art

[0002] With the popularization of mobile computing devices, as a core productivity tool, the battery life and charging efficiency of laptop computers have become key indicators of user experience. Currently, the industry generally uses lithium-ion / lithium polymer batteries as the energy carrier, and the charging management strategy is mostly based on the traditional constant current-constant voltage (CC-CV) mode, controlling the charging process by presetting the upper limit voltage and cut-off current of the cell standard. However, while pursuing safety and lifespan, this mode exposes significant problems such as low charging efficiency and excessive time consumption in the terminal constant voltage (CV) stage, making it difficult to meet users' urgent need for rapid charging. Summary of the Invention

[0003] In view of this, the purpose of the present application is to provide a battery charging management method, device, electronic device, and storage medium. By increasing the termination voltage in the constant current stage and the cut-off current in the constant voltage stage, the charging time can be effectively shortened and the charging efficiency can be improved.

[0004] An embodiment of the present application provides a battery charging management method, and the management method includes:

[0005] Identifying the current charging mode of the target battery;

[0006] When the current charging mode is the fast charging mode, obtaining the fast charging strategy in 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 according to the electrochemical characteristics of the cells of the target battery; the fast charging cut-off current in the constant voltage fast charging stage is determined by increasing the initial cut-off current on the basis of ensuring the consistency result of the charging capacity;

[0007] Charging the target battery according to the fast charging strategy.

[0008] Optionally, the charging the target battery according to the fast charging strategy includes:

[0009] Performing constant current charging on the target battery with a first constant current and monitoring the current fast charging voltage in the constant current fast charging stage;

[0010] When the current fast charging voltage reaches the switching voltage, performing constant current charging on the target battery with a second constant current and continuing to monitor the current fast charging voltage in the constant current fast charging stage;

[0011] When the current fast charging voltage reaches the fast charging termination voltage, the target battery is charged at a constant voltage with the fast charging termination voltage, and the current fast charging current in the constant voltage fast charging stage is monitored;

[0012] When the current fast charging current reaches the fast charging cut-off current, the charging is stopped.

[0013] Optionally, when the current charging mode is the conventional charging mode, the management method further includes:

[0014] The target battery is charged at a constant current with a first constant current, and the current monitored voltage in the conventional constant current stage is monitored;

[0015] When the current monitored voltage reaches the switching voltage, the target battery is charged at a constant current with a second constant current, and the current monitored voltage in the conventional constant current stage is continuously monitored;

[0016] When the current monitored voltage reaches the initial termination voltage, the target battery is charged at a constant voltage with the initial termination voltage, and the current monitored current in the conventional constant voltage stage is monitored;

[0017] When the current monitored current reaches the initial cut-off current, the charging is stopped.

[0018] Optionally, the fast charging termination voltage is determined by the following steps:

[0019] According to the electrochemical characteristics of the battery cells of the target battery, determine the maximum safe voltage change amplitude that the target battery can withstand;

[0020] According to the maximum safe voltage change amplitude and the initial termination voltage, determine the fast charging termination voltage.

[0021] Optionally, the determining the fast charging termination voltage according to the maximum safe voltage change amplitude and the initial termination voltage includes:

[0022] The sum of the initial termination voltage and the maximum safe voltage change amplitude is determined as the fast charging termination voltage.

[0023] Optionally, the fast charging cut-off current is determined by the following steps:

[0024] Obtain the first charging capacity of the target battery after the current monitored current reaches the initial cut-off current in the conventional charging mode;

[0025] The initial cut-off current is sequentially increased at a preset change interval, and after each change, a candidate cut-off current is obtained;

[0026] For each candidate cut-off current, obtain the second charging capacity of the target battery after the current reaches the candidate cut-off current.

[0027] Determine the fast charging cut-off current as the maximum candidate cut-off current corresponding to the second charging capacity that meets the consistency condition with the first charging capacity.

[0028] Optionally, determine the second charging capacity that meets the consistency condition with the first charging capacity through the following steps:

[0029] Determine the capacity error between the second charging capacity and the first charging capacity.

[0030] When the capacity error is within the preset error range, determine that the second charging capacity meets the consistency condition with the first charging capacity.

[0031] The embodiment of the present application also provides a battery charging management device, and the management device includes:

[0032] An identification module, configured to identify the current charging mode of the target battery.

[0033] An acquisition module, configured to, when the current charging mode is the fast charging mode, acquire the fast charging strategy in 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 according to the electrochemical characteristics of the battery cells of the target battery; the fast charging cut-off current in the constant voltage fast charging stage is determined by increasing the initial cut-off current on the basis of ensuring the consistency result of the charging capacity.

[0034] A charging module, configured to charge the target battery according to the fast charging strategy.

[0035] Optionally, when the charging module is used to charge the target battery according to the fast charging strategy, the charging module is configured to:

[0036] Perform constant current charging on the target battery with a first constant current and monitor the current fast charging voltage in the constant current fast charging stage.

[0037] When the current fast charging voltage reaches the switching voltage, perform constant current charging on the target battery with a second constant current and continue to monitor the current fast charging voltage in the constant current fast charging stage.

[0038] When the current fast charging voltage reaches the fast charging termination voltage, perform constant voltage charging on the target battery with the fast charging termination voltage and monitor the current fast charging current in the constant voltage fast charging stage.

[0039] When the current fast charging current reaches the fast charging cut-off current, stop charging.

[0040] Optionally, the charging module is further configured to:

[0041] When the current charging mode is the normal charging mode, perform constant current charging on the target battery with a first constant current, and monitor the current monitored voltage in the normal constant current stage;

[0042] When the current monitored voltage reaches the switching voltage, perform constant current charging on the target battery with a second constant current, and continue to monitor the current monitored voltage in the normal constant current stage;

[0043] When the current monitored voltage reaches the initial cut-off voltage, perform constant voltage charging on the target battery with the initial cut-off voltage, and monitor the current monitored current in the normal constant voltage stage;

[0044] When the current monitored current reaches the initial cut-off current, stop charging.

[0045] Optionally, the management device further includes a voltage determination module, and the voltage determination module is configured to determine the fast charging cut-off voltage through the following steps:

[0046] According to the electrochemical characteristics of the battery cells of the target battery, determine the maximum safe voltage change amplitude that the target battery can withstand;

[0047] According to the maximum safe voltage change amplitude and the initial cut-off voltage, determine the fast charging cut-off voltage.

[0048] Optionally, when the voltage determination module is used to determine the fast charging cut-off voltage according to the maximum safe voltage change amplitude and the initial cut-off voltage, the voltage determination module is configured to:

[0049] Determine the sum of the initial cut-off voltage and the maximum safe voltage change amplitude as the fast charging cut-off voltage.

[0050] Optionally, the management device further includes a current determination module, and the current determination module is configured to determine the fast charging cut-off current through the following steps:

[0051] Obtain the first charging capacity of the target battery after the current monitored current reaches the initial cut-off current in the normal charging mode;

[0052] Increase the initial cut-off current successively at a preset change interval, and obtain a candidate cut-off current after each change;

[0053] For each candidate cut-off current, obtain the second charging capacity of the target battery after the current reaches the candidate cut-off current;

[0054] Determine the fast charging cut-off current as the maximum candidate cut-off current corresponding to the second charging capacity that meets the consistency condition with the first charging capacity.

[0055] Optionally, the current determination module is further configured to determine the second charging capacity that meets the consistency condition with the first charging capacity through the following steps:

[0056] Determine the capacity error between the second charging capacity and the first charging capacity;

[0057] When the capacity error is within a preset error range, determine that the second charging capacity and the first charging capacity meet the consistency condition.

[0058] An embodiment of the present application further 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 runs, the processor communicates with the memory through the bus. When the machine-readable instructions are executed by the processor, the steps of the management method described above are executed.

[0059] An embodiment of the present application further provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is run by a processor, the steps of the management method described above are executed.

[0060] A battery charging management method, device, electronic device, and storage medium provided by an embodiment of the present application. The method includes: identifying a current charging mode of a target battery; when the current charging mode is a fast charging mode, obtaining a fast charging strategy in the fast charging mode; where 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 an initial termination voltage according to the electrochemical characteristics of the battery cells of the target battery; the fast charging cut-off current in the constant voltage fast charging stage is determined by increasing an initial cut-off current on the basis of ensuring the consistency result of the charging capacity; charging the target battery according to the fast charging strategy.

[0061] In this way, compared with the existing battery charging solutions, the present application has the following advantages:

[0062] 1. Make full use of the voltage tolerance of the electrochemical system of the battery cells to improve the charging efficiency;

[0063] 2. Increase the charging voltage in the constant current charging stage while ensuring the safety of the battery cells, which can further improve the charging efficiency;

[0064] 3. Increase the cut-off current and ensure that there is no loss of charging capacity, meeting the charging and usage requirements for battery safety and health;

[0065] 4. Shorten the charging time, improve the charging speed, and reduce the full charge time of the battery.

[0066] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] To more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0068] Figure 1 The flowchart of a battery charging management method provided by an embodiment of the present application;

[0069] Figure 2 One of the charging result examples corresponding to different charging modes provided by the present application;

[0070] Figure 3 Another charging result example corresponding to different charging modes provided by the present application;

[0071] Figure 4 One of the structural schematic diagrams of a battery charging management device provided by an embodiment of the present application;

[0072] Figure 5 Another structural schematic diagram of a battery charging management device provided by an embodiment of the present application;

[0073] Figure 6 The structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0074] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, every other embodiment obtained by those skilled in the art without creative efforts falls within the scope of protection of the present application.

[0075] First, an introduction to the applicable application scenarios of this application is provided. This application can be applied to the battery field; 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 stores electrical energy as chemical energy through an external power source and converts the chemical energy back into electrical energy when in use. Common types include: nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, lithium polymer batteries, etc.

[0076] With the popularity of mobile computing devices, as a core productivity tool, the battery life and charging efficiency of laptops have become key indicators of the user experience. Currently, the industry generally uses lithium-ion / lithium polymer batteries as the energy carrier, and the charging management strategy is mostly based on the traditional constant current-constant voltage (CC-CV) mode. The charging process is controlled by presetting the upper limit voltage and cut-off current of the battery cell standard. However, while pursuing safety and lifespan, this mode exposes significant problems such as low charging efficiency and an overly long terminal constant voltage (CV) stage, making it difficult to meet users' urgent need for rapid charging.

[0077] Based on this, the embodiments of this application provide a battery charging management method, device, electronic device, and storage medium. By increasing the termination voltage in the constant current stage and the cut-off current in the constant voltage stage, the charging time can be effectively shortened and the charging efficiency can be improved.

[0078] Please refer to Figure 1 , Figure 1 which is a flowchart of a battery charging management method provided by an embodiment of this application. As shown in Figure 1 , the management method provided by the embodiments of this application includes:

[0079] S101. Identify the current charging mode of the target battery;

[0080] S102. When the current charging mode is the fast charging mode, obtain the fast charging strategy in the fast charging mode;

[0081] S103. Charge the target battery according to the fast charging strategy.

[0082] In an implementation manner provided by this application, first, the charging state of the target battery is identified in real time. After determining that the target battery enters the charging state, determine the current required charging mode of the target battery; then, when it is determined that the current charging mode of the target battery is the fast charging mode, obtain the fast charging strategy of the target battery in the fast charging mode; finally, charge the target battery according to the determined fast charging strategy, thereby effectively improving the charging efficiency.

[0083] The following is an explanation of the exemplary steps of the embodiments of this application:

[0084] Regarding step S101, before executing step S101, a charging detection is performed. After it is determined that charging starts, step S101 is executed, that is, the current charging mode of the target battery is identified.

[0085] Among them, when identifying the current charging mode of the target battery, it can be determined according to the charging instruction information sent by the device where the target battery is located.

[0086] The charging instruction information can be sent after the user operates the device where the target battery is located, or can be pre-set. There is no limitation here.

[0087] Here, the current charging module of the target battery can be a fast charging mode or a conventional charging mode. Among them, compared with the fast charging mode, the conventional charging mode takes longer charging time.

[0088] Regarding step S102, here, 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 according to the electrochemical characteristics of the battery cells of the target battery; the fast charging cut-off current in the constant voltage fast charging stage is determined by increasing the initial cut-off current on the basis of ensuring the consistency result of the charging capacity.

[0089] Among them, the execution order of the constant current fast charging stage and the constant voltage fast charging stage in the fast charging strategy is to execute the constant current fast charging stage first and then the constant voltage fast charging stage.

[0090] The fast charging termination voltage in the constant current fast charging stage is used to determine the condition for converting the constant current fast charging stage to the constant voltage fast charging stage. The fast charging cut-off current in the constant voltage fast charging stage is used to determine the condition for ending the charging.

[0091] In an implementation manner provided by the present application, the fast charging termination voltage is determined through the following steps:

[0092] S201. According to the electrochemical characteristics of the battery cells of the target battery, determine the maximum safe voltage change amplitude that the target battery can withstand.

[0093] S202. According to the maximum safe voltage change amplitude and the initial termination voltage, determine the fast charging termination voltage.

[0094] Regarding step S201, it should be noted that the electrochemical characteristics of the battery cells refer to the influence characteristics of the internal chemical reactions and material characteristics of the battery on its performance, safety and life.

[0095] In this step, when determining the maximum safe voltage change amplitude that the target battery can withstand according to the electrochemical characteristics of the battery cells of the target battery, it may specifically include: determining, based on information such as the electrochemical type and internal structure of the target battery and in combination with the actual application scenarios (such as fast charging, slow charging, high-rate discharging, etc.), the maximum safe voltage change amplitude that the target battery can withstand compared to the initial and final voltages in the conventional mode on the premise of ensuring charging safety.

[0096] Regarding step S202, in an implementation manner provided by the present application, the determining the fast charging termination voltage according to the maximum safe voltage change amplitude and the initial and final voltages includes: determining the sum of the initial and final voltages and the maximum safe voltage change amplitude as the fast charging termination voltage.

[0097] Exemplarily, through multiple experiments, the maximum safe voltage change amplitude in the present application may be 50 mV.

[0098] Continuing to address step S102, in an implementation manner provided by the present application, the fast charging cut-off current is determined through the following steps:

[0099] S301. Obtain the first charging capacity of the target battery when the current monitoring current reaches the initial cut-off current in the conventional charging mode;

[0100] S302. Increase the initial cut-off current successively at a preset change interval, and obtain a candidate cut-off current after each change;

[0101] S303. For each candidate cut-off current, obtain the second charging capacity of the target battery when the current reaches the candidate cut-off current;

[0102] S304. Determine the maximum candidate cut-off current corresponding to the second charging capacity that meets the consistency condition with the first charging capacity as the fast charging cut-off current.

[0103] Regarding 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 cut-off current), and determining the first charging capacity of the target battery after charging ends.

[0104] In addition, the first charging capacity may also be determined according to the product parameter information of the manufacturer.

[0105] Regarding step S302, the preset change interval can be adaptively set according to the actual situation, and the number of determined candidate cut-off currents can also be adaptively set according to the actual situation.

[0106] Exemplarily, when the initial cut-off current is 0.05C, the preset change interval can be set to 0.01C, or other values can be set, which is not limited herein.

[0107] Regarding step S303, this step includes, after each candidate cut-off current is determined, performing a charging experiment on the target battery. When the current in the constant voltage charging stage reaches the candidate cut-off current, stop charging, and obtain the second charging capacity that the target battery can reach with the candidate cut-off current as the charging end condition. After the charging ends,

[0108] Regarding 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; determining the maximum value among the candidate cut-off currents corresponding to the second charging capacities that meet the consistency condition as the fast charging cut-off current.

[0109] Exemplarily, the fast charging cut-off current determined in the present application can be 0.15C, and the initial cut-off current under normal charging conditions is generally 0.05C. In this way, the end constant voltage charging time is shortened, and the charging capacity is maintained within a qualified range, maximizing the charging efficiency on the premise of meeting the same capacity.

[0110] Regarding step S304, in an implementation manner provided by the present application, the second charging capacity that meets the consistency condition with the first charging capacity is determined through the following steps: determining the capacity error between the second charging capacity and the first charging capacity; when the capacity error is within the preset error range, determining that the second charging capacity and the first charging capacity meet the consistency condition.

[0111] Here, the capacity error can be the difference obtained by subtracting the second charging capacity from the first charging capacity. The error range can be adaptively set.

[0112] Regarding step S103, in an implementation manner provided by the present application, the charging of the target battery according to the fast charging strategy includes:

[0113] S1031. Perform constant current charging on the target battery with a first constant current, and monitor the current fast charging voltage in the constant current fast charging stage.

[0114] S1032. When the current fast charging voltage reaches the switching voltage, perform constant current charging on the target battery with a second constant current, and continue to monitor the current fast charging voltage in the constant current fast charging stage.

[0115] S1033. When the current fast charging voltage reaches the fast charging termination voltage, perform constant voltage charging on the target battery with the fast charging termination voltage, and monitor the current fast charging current in the constant voltage fast charging stage.

[0116] S1034. When the current fast charging current reaches the fast charging cut-off current, stop charging.

[0117] 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 fast charging cut-off current.

[0118] The switching voltage can be adaptively set, but the switching voltage is lower than the fast charging termination voltage.

[0119] In addition, in another embodiment provided by the present application, when the current charging mode is the conventional charging mode, the management method further includes:

[0120] S401. Constant current charge the target battery with a first constant current, and monitor the current monitored voltage in the conventional constant current stage.

[0121] S402. When the current monitored voltage reaches the switching voltage, constant current charge the target battery with a second constant current, and continue to monitor the current monitored voltage in the conventional constant current stage.

[0122] S403. When the current monitored voltage reaches the initial termination voltage, constant voltage charge the target battery with the initial termination voltage, and monitor the current monitored current in the conventional constant voltage stage.

[0123] S404. When the current monitored current reaches the initial cut-off current, stop charging.

[0124] 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 cut-off current.

[0125] The switching voltage can be adaptively set, but the switching voltage is lower than the initial termination voltage.

[0126] To illustrate the advantages of this solution, the present application provides the following test data for demonstration. Please refer to Figure 2 , Figure 2 is one of the charging result examples corresponding to different charging modes provided by the present application. For example, Figure 2As shown, 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 cut-off current, CC4 represents the fast charging cut-off current, CV1 represents the switching voltage, CV2 represents the initial cut-off voltage, and CV2 + 50mV represents the fast charging cut-off voltage. Here, the fast charging mode is to increase the cut-off voltage of the constant current charging to CV2 + 50mV under the conditions of the conventional charging mode, and increase the constant voltage charging cut-off current CC4 = 0.15C. C1 represents the first charging capacity, C2 represents the second charging capacity, and C1 and C2 are basically equal, so both also meet the consistency condition. As Figure 2 shown, the charging time used in the fast charging mode is 25% shorter than the charging time in the conventional charging mode.

[0127] In addition, to further illustrate the advantages of this solution, please refer to Figure 3 , Figure 3 which is the second example of the charging results corresponding to different charging modes provided by this application. As Figure 3 shown, the fast charging mode in this solution further improves the charging efficiency and shortens the charging time on the basis of meeting the charging capacity requirements compared with the conventional charging mode.

[0128] In this way, this solution has the following advantages compared with the prior art: making full use of the voltage tolerance ability of the battery cell electrochemical system to improve the charging efficiency; increasing the charging voltage in the constant current charging stage while ensuring the safety of the battery cell, which can further improve the charging efficiency; increasing the cut-off current and ensuring that there is no loss of charging capacity, meeting the charging and usage requirements of battery safety and health; shortening the charging time, improving the charging speed, and reducing the full charge time of the battery.

[0129] Based on the same inventive concept, the embodiments of this application also provide a management device corresponding to the management method. Since the principle of solving problems by the device in the embodiments of this application is similar to the above management method in the embodiments of this application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be described again.

[0130] Please refer to Figure 4 , Figure 5 , Figure 4 which is the first structural schematic diagram of a battery charging management device provided by the embodiments of this application, Figure 5 and Figure 4

[0131] an identification module 410, configured to identify the current charging mode of the target battery;

[0132] An acquisition module 420, configured to obtain a fast charging strategy in a fast charging mode when the current charging mode is 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 according to the electrochemical characteristics of the battery cells of the target battery; the fast charging cut-off current in the constant voltage fast charging stage is determined by increasing the initial cut-off current on the basis of ensuring the consistency of the charging capacity results;

[0133] A charging module 430, configured to charge the target battery according to the fast charging strategy.

[0134] Optionally, when the charging module 430 is configured to charge the target battery according to the fast charging strategy, the charging module 430 is configured to:

[0135] Charge the target battery with a first constant current in a constant current charging manner, and monitor the current fast charging voltage in the constant current fast charging stage;

[0136] When the current fast charging voltage reaches the switching voltage, charge the target battery with a second constant current in a constant current charging manner, and continue to monitor the current fast charging voltage in the constant current fast charging stage;

[0137] When the current fast charging voltage reaches the fast charging termination voltage, charge the target battery with the fast charging termination voltage in a constant voltage charging manner, and monitor the current fast charging current in the constant voltage fast charging stage;

[0138] When the current fast charging current reaches the fast charging cut-off current, stop charging.

[0139] Optionally, the charging module 430 is further configured to:

[0140] When the current charging mode is the normal charging mode, charge the target battery with a first constant current in a constant current charging manner, and monitor the current monitored voltage in the normal constant current stage;

[0141] When the current monitored voltage reaches the switching voltage, charge the target battery with a second constant current in a constant current charging manner, and continue to monitor the current monitored voltage in the normal constant current stage;

[0142] When the current monitored voltage reaches the initial termination voltage, charge the target battery with the initial termination voltage in a constant voltage charging manner, and monitor the current monitored current in the normal constant voltage stage;

[0143] When the current monitored current reaches the initial cut-off current, stop charging.

[0144] Optionally, as Figure 5As shown, the management device 400 further includes a voltage determination module 440, and the voltage determination module 440 is used to determine the fast charging termination voltage through the following steps:

[0145] According to the electrochemical characteristics of the battery cells of the target battery, determine the maximum safe voltage change amplitude that the target battery can withstand;

[0146] According to the maximum safe voltage change amplitude and the initial termination voltage, determine the fast charging termination voltage.

[0147] Optionally, when the voltage determination module 440 is used to determine the fast charging termination voltage according to the maximum safe voltage change amplitude and the initial termination voltage, the voltage determination module 440 is used to:

[0148] Determine the sum of the initial termination voltage and the maximum safe voltage change amplitude as the fast charging termination voltage.

[0149] Optionally, the management device 400 further includes a current determination module 450, and the current determination module 450 is used to determine the fast charging cut-off current through the following steps:

[0150] Obtain the first charging capacity of the target battery when the current monitoring current reaches the initial cut-off current in the conventional charging mode;

[0151] Increase the initial cut-off current sequentially at a preset change interval, and obtain a candidate cut-off current after each change;

[0152] For each candidate cut-off current, obtain the second charging capacity of the target battery when the current reaches the candidate cut-off current;

[0153] Determine the maximum candidate cut-off current corresponding to the second charging capacity that meets the consistency condition with the first charging capacity as the fast charging cut-off current.

[0154] Optionally, the current determination module 450 is further used to determine the second charging capacity that meets the consistency condition with the first charging capacity through the following steps:

[0155] Determine the capacity error between the second charging capacity and the first charging capacity;

[0156] When the capacity error is within the preset error range, determine that the second charging capacity meets the consistency condition with the first charging capacity.

[0157] Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As Figure 6As shown, the electronic device 600 includes a processor 610, a memory 620, and a bus 630.

[0158] The memory 620 stores machine-readable instructions executable by the processor 610. When the electronic device 600 runs, the processor 610 communicates with the memory 620 via the bus 630. When the machine-readable instructions are executed by the processor 610, the steps in the method embodiments as described above can be performed. For the specific implementation manners, reference can be made to the method embodiments and will not be elaborated herein. Figures 1 to 3 As shown in the method embodiments, for the specific implementation manners, reference can be made to the method embodiments and will not be elaborated herein.

[0159] The embodiments of the present application further provide a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is run by a processor, the steps in the method embodiments as described above can be performed. For the specific implementation manners, reference can be made to the method embodiments and will not be elaborated herein. Figures 1 to 3 As shown in the method embodiments, for the specific implementation manners, reference can be made to the method embodiments and will not be elaborated herein.

[0160] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0161] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division manners in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some communication interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0162] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0163] In addition, in each embodiment of the present application, the functional units can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0164] When the above-mentioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs that can store program codes.

[0165] Finally, it should be noted that the above-mentioned embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the technical field can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes, or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery charging management method, characterized in that: The management method comprises: Identify the current charging mode of the target battery; When the current charging mode is the fast charging mode, the fast charging strategy in the 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 according to the electrochemical characteristics of the target battery cell; the fast charging cut-off current in the constant voltage fast charging stage is determined by increasing the initial cut-off current on the basis of ensuring the consistency of the charging capacity result; The target battery is charged according to the fast charging strategy.

2. The management method according to claim 1, characterized in that: The charging the target battery according to the fast charging strategy includes: Performing constant current charging on the target battery with a first constant current, and monitoring a current fast charging voltage in a constant current fast charging stage; When the current fast charge voltage reaches the switching voltage, the target battery is charged with a second constant current at a constant current, and the current fast charge voltage in the constant current fast charge stage is continuously monitored; When the current fast charge voltage reaches the fast charge termination voltage, the target battery is charged at a constant voltage at the fast charge termination voltage, and the current fast charge current in the constant voltage fast charge stage is monitored; When the current fast charge current reaches the fast charge cut-off current, charging is stopped.

3. The management method according to claim 1, characterized in that: When the current charging mode is a normal charging mode, the management method further includes: Performing constant current charging on the target battery with a first constant current, and monitoring a current monitoring voltage in a conventional constant current stage; When the current monitoring voltage reaches the switching voltage, the target battery is charged with a second constant current, and the current monitoring voltage in the conventional constant current stage is continuously monitored; When the current monitoring voltage reaches the initial termination voltage, the target battery is charged at a constant voltage with the initial termination voltage, and the current monitoring current in a conventional constant voltage stage is monitored; When the current monitoring current reaches the initial cut-off current, charging is stopped.

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

5. The management method according to claim 4, characterized in that: The determining the fast charge termination voltage according to the maximum safe voltage variation 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 charge termination voltage.

6. The management method according to claim 1, characterized in that: The fast charge cut-off current is determined by the following steps: Acquire a first charging capacity of the target battery in a conventional charging mode when the current monitoring current reaches an initial cut-off current; The initial cut-off current is sequentially increased according to a preset change interval, and a candidate cut-off current is obtained after each change; For each candidate cut-off current, obtaining a second charging capacity of the target battery when the current current reaches the candidate cut-off current; The fast charge cut-off current is determined by the maximum candidate cut-off current corresponding to the second charge capacity that meets the consistency condition with the first charge capacity.

7. The management method according to claim 6, characterized in that: Determine the second charging capacity that satisfies the consistency condition with the first charging capacity by the following steps: determining a 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 a consistency condition.

8. A battery charging management device, characterized in that: The management device comprises: An identification module, used for identifying a current charging mode of a target battery; An acquisition module, used for acquiring a fast charging strategy in the fast charging mode when the current charging mode is 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 according to the electrochemical characteristics of the target battery cell; the fast charging cut-off current in the constant voltage fast charging stage is determined by increasing the initial cut-off current on the basis of ensuring the consistency of the charging capacity result; A charging module is used to charge the target battery according to the fast charging strategy.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to execute 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, and when the computer program is executed by a processor, the steps of the management method according to any one of claims 1 to 7 are executed.

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