A power battery charging method, device, equipment and medium

Abstract

A power battery charging method, device, equipment and medium are disclosed, including: monitoring the actual state of charge of a target battery during a target battery charging process; when the actual state of charge is less than a preset state of charge, determining the actual charging stage in which the target battery is currently located according to the actual state of charge; determining the target limit charging rate corresponding to the actual charging stage according to the correspondence between the actual charging stage and the limit charging rate; determining the actual charging rate according to the target limit charging rate, and controlling the target battery to charge at the actual charging rate in the actual charging stage. The present application charges within the range of less than or equal to the limit charging rate, can avoid the occurrence of obvious polarization phenomenon, reduce the polarization degree, that is, increase the charging rate as much as possible under the premise of low polarization degree, shorten the charging time, improve the charging efficiency, and at the same time improve the charged power.

Description

Technical Field

[0001] This invention relates to the field of power battery technology, and in particular to a power battery charging method, apparatus, equipment, and medium. Background Technology

[0002] Electric vehicles are powered by batteries, which are replenished through charging. During the charging process, when the battery is in a low state of charge (SOC), its internal resistance is relatively high. Using a large current for fast charging can cause significant polarization. While using a small current can reduce polarization, it prolongs charging time and affects charging efficiency. Therefore, balancing the degree of polarization and charging time when the battery is in a low state of charge is a pressing issue that needs to be addressed. Summary of the Invention

[0003] This application provides a power battery charging method, apparatus, device, and medium, which solves the technical problem in the prior art that it is impossible to balance the polarization degree and charging time of a power battery when charging in a low state of charge, and achieves the technical effect of balancing the polarization degree and charging time of a power battery when charging in a low state of charge.

[0004] In a first aspect, this application provides a method for charging a power battery, the method comprising:

[0005] During the charging process of the target battery, monitor the actual state of charge of the target battery;

[0006] When the actual state of charge is less than the preset state of charge, the actual charging stage of the target battery is determined based on the actual state of charge.

[0007] Based on the actual charging stage and the correspondence between the charging stage and the limit charging rate, determine the target limit charging rate corresponding to the actual charging stage.

[0008] The actual charging rate is determined based on the target limit charging rate, and the target battery is controlled to be charged at the actual charging rate during the actual charging phase.

[0009] Furthermore, the actual charging rate is determined based on the target maximum charging rate, and the target battery is controlled to be charged at the actual charging rate during the actual charging phase, including:

[0010] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0011] The actual charging rate of the target battery is controlled to decrease as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0012] Furthermore, the actual charging rate is determined based on the target maximum charging rate, and the target battery is controlled to be charged at the actual charging rate during the actual charging phase, including:

[0013] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0014] The actual charging rate of the target battery decreases as the actual state of charge of the target battery increases;

[0015] During the process of decreasing the actual charging rate of the target battery, monitor the actual rate of change of the charging voltage of the target battery;

[0016] When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery is increased as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0017] Furthermore, the actual charging rate is determined based on the target maximum charging rate, and the target battery is controlled to be charged at the actual charging rate during the actual charging phase, including:

[0018] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0019] The actual charging rate of the target battery decreases as the actual state of charge of the target battery increases;

[0020] During the process of decreasing the actual charging rate of the target battery, monitor the actual rate of change of the charging voltage of the target battery;

[0021] When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery increases as the actual state of charge of the target battery increases.

[0022] When the actual charging rate equals the target limit charging rate, continue charging at the target limit charging rate until the actual charging phase ends.

[0023] Furthermore, controlling the actual charging rate of the target battery to increase as the actual state of charge of the target battery increases includes:

[0024] The actual charging rate of the target battery increases linearly with the increase of the actual state of charge of the target battery.

[0025] Furthermore, controlling the actual charging rate of the target battery to decrease as the actual state of charge of the target battery increases includes:

[0026] The actual charging rate of the target battery decreases linearly as the actual state of charge of the target battery increases.

[0027] Furthermore, when the actual state of charge is greater than the preset state of charge, the method also includes:

[0028] Determine the target charging stage of the target battery based on its actual state of charge;

[0029] Based on the target charging stage and the correspondence between the charging stage and the conventional charging rate, determine the target conventional charging rate corresponding to the target charging stage;

[0030] Control the target battery to charge at the target conventional charging rate during the target charging phase.

[0031] Secondly, this application provides a power battery charging device, the device comprising:

[0032] The state of charge monitoring module is used to monitor the actual state of charge of the target battery during the charging process.

[0033] The charging stage determination module is used to determine the actual charging stage of the target battery based on the actual state of charge when the actual state of charge is less than the preset state of charge.

[0034] The rate determination module is used to determine the target limit charging rate corresponding to the actual charging stage based on the actual charging stage and the correspondence between the charging stage and the limit charging rate.

[0035] The charging control module is used to determine the actual charging rate based on the target limit charging rate and control the target battery to charge at the actual charging rate during the actual charging phase.

[0036] Furthermore, the charging control module is used for:

[0037] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0038] The actual charging rate of the target battery is controlled to decrease as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0039] Furthermore, the charging control module is used for:

[0040] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0041] The actual charging rate of the target battery decreases as the actual state of charge of the target battery increases;

[0042] During the process of decreasing the actual charging rate of the target battery, monitor the actual rate of change of the charging voltage of the target battery;

[0043] When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery is increased as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0044] Furthermore, the charging control module is used for:

[0045] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0046] The actual charging rate of the target battery decreases as the actual state of charge of the target battery increases;

[0047] During the process of decreasing the actual charging rate of the target battery, monitor the actual rate of change of the charging voltage of the target battery;

[0048] When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery increases as the actual state of charge of the target battery increases.

[0049] When the actual charging rate equals the target limit charging rate, continue charging at the target limit charging rate until the actual charging phase ends.

[0050] Furthermore, the charging control module is used for:

[0051] The actual charging rate of the target battery increases linearly with the increase of the actual state of charge of the target battery.

[0052] Furthermore, the charging control module is used for:

[0053] The actual charging rate of the target battery decreases linearly as the actual state of charge of the target battery increases.

[0054] Furthermore, the charging stage determination module is used to determine the target charging stage of the target battery based on the actual state of charge when the actual state of charge is greater than the preset state of charge.

[0055] The rate determination module is used to determine the target conventional charging rate corresponding to the target charging stage based on the target charging stage and the correspondence between the charging stage and the conventional charging rate.

[0056] The charging control module is used to control the target battery to be charged at the target conventional charging rate during the target charging phase.

[0057] Thirdly, this application provides an electronic device, comprising:

[0058] processor;

[0059] Memory used to store processor-executable instructions;

[0060] The processor is configured to execute a power battery charging method as provided in the first aspect.

[0061] Fourthly, this application provides a non-transitory computer-readable storage medium that, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to perform a power battery charging method as provided in the first aspect.

[0062] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0063] In this embodiment, during the charging process of the target battery, the actual state of charge (SOC) of the target battery is monitored. Based on the actual SOC, charging stages where the target battery is in a low SOC are selected. According to the correspondence between the actual charging stage and the maximum charging rate, the target maximum charging rate corresponding to the actual charging stage is determined. Then, the actual charging rate is determined based on the target maximum charging rate, and the target battery is controlled to be charged at the actual charging rate during the actual charging stage. Therefore, this embodiment maximizes the charging rate within the range of less than or equal to the maximum charging rate during the charging stage where the target battery is in a low SOC, thereby shortening the charging time. Charging within the range of less than or equal to the maximum charging rate also avoids significant polarization, reducing the degree of polarization. In other words, it maximizes the charging rate while minimizing polarization, shortening the charging time, improving charging efficiency, and also increasing the amount of electricity charged. Attached Figure Description

[0064] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0065] Figure 1 A schematic flowchart illustrating a power battery charging method provided in this application;

[0066] Figure 2 A schematic diagram of a power battery charging device provided in this application;

[0067] Figure 3 This is a schematic diagram of the structure of an electronic device provided in this application. Detailed Implementation

[0068] This application provides a power battery charging method that solves the technical problem in the prior art of being unable to balance the polarization degree and charging time of a power battery when charging in a low-charge state.

[0069] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0070] A method for charging a power battery includes: monitoring the actual state of charge (SOC) of the target battery during charging; determining the current charging stage of the target battery based on the actual SOC when the actual SOC is less than a preset SOC; determining a target limit charging rate corresponding to the actual charging stage based on the correspondence between the actual charging stage and the charging stage and the limit charging rate; determining the actual charging rate based on the target limit charging rate, and controlling the target battery to charge at the actual charging rate during the actual charging stage.

[0071] In this embodiment, during the charging process of the target battery, the actual state of charge (SOC) of the target battery is monitored. Based on the actual SOC, charging stages where the target battery is in a low SOC are selected. According to the correspondence between the actual charging stage and the maximum charging rate, the target maximum charging rate corresponding to the actual charging stage is determined. Then, the actual charging rate is determined based on the target maximum charging rate, and the target battery is controlled to be charged at the actual charging rate during the actual charging stage. Therefore, this embodiment maximizes the charging rate within the range of less than or equal to the maximum charging rate during the charging stage where the target battery is in a low SOC, thereby shortening the charging time. Charging within the range of less than or equal to the maximum charging rate also avoids significant polarization, reducing the degree of polarization. In other words, it maximizes the charging rate while minimizing polarization, shortening the charging time, improving charging efficiency, and also increasing the amount of electricity charged.

[0072] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0073] First, it should be clarified that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0074] During the charging process of a power battery, when the battery is in a low state of charge (SOC), its internal resistance is relatively high. Using a large current for fast charging can cause significant polarization. Related technologies often employ a significantly reduced charging rate at low SOC to reduce polarization. While this reduces polarization, it prolongs charging time and reduces the amount of electricity delivered, thus affecting charging efficiency.

[0075] To address the aforementioned problems, this embodiment provides the following: Figure 1 The method shown is a power battery charging method, which includes steps S11-S14.

[0076] Step S11: During the charging process of the target battery, monitor the actual state of charge of the target battery.

[0077] Step S12: When the actual state of charge is less than the preset state of charge, determine the current actual charging stage of the target battery based on the actual state of charge.

[0078] Step S13: Determine the target limit charging rate corresponding to the actual charging stage based on the actual charging stage and the correspondence between the charging stage and the limit charging rate.

[0079] Step S14: Determine the actual charging rate based on the target limit charging rate, and control the target battery to charge at the actual charging rate during the actual charging phase.

[0080] The power battery charging method provided in this embodiment can be executed by the battery management system or by the vehicle controller of the vehicle where the power battery is located, depending on the actual situation.

[0081] Regarding step S11, during the charging process of the target battery, the actual state of charge of the target battery is monitored.

[0082] During the charging process of the target battery, the actual state of charge of the target battery is monitored, and the power battery is determined to be in the low SOC charging stage based on the actual state of charge.

[0083] When the actual state of charge (SOC) is less than the preset SOC, it means that the target battery is in a low SOC charging phase, and step S12 can continue. The preset SOC can be selected according to the actual situation. Generally, a state with an SOC of 30% or below is called a low SOC charging phase, so the preset SOC can be 30%.

[0084] When the actual state of charge is greater than the preset state of charge, it means that the target battery is not in the low SOC charging stage, and steps S111-S113 can continue to be executed.

[0085] Step S111: Determine the target charging stage of the target battery based on the actual state of charge.

[0086] Step S112: Determine the target conventional charging rate corresponding to the target charging stage based on the target charging stage and the correspondence between the charging stage and the conventional charging rate.

[0087] Step S113: Control the target battery to charge at the target conventional charging rate during the target charging phase.

[0088] Typically, the charging process of a target battery is divided into multiple charging stages based on its actual state of charge, as shown in Table 1. Each stage is divided in 10% increments, and each stage corresponds to a standard charging rate. The relationships shown in Table 1 can be obtained from the factory data of the power battery or through battery testing.

[0089] Table 1

[0090] Standard charging rate 2 3 4.55 0.5 0.33

[0091] In step S111, the target charging stage of the target battery is determined based on the actual state of charge of the target battery. For example, when the SOC is 81%, it means that the target battery is in the 80%-90% charging stage, that is, the target charging stage is the 80%-90% charging stage.

[0092] In step S112, based on the correspondence between the charging stage and the conventional charging rate shown in the target charging stage lookup table 1, the corresponding target conventional charging rate can be determined to be 0.5.

[0093] In step S113, the target battery is charged at the target conventional charging rate of 0.5 until the current target charging phase ends, that is, until the SOC is greater than or equal to 90%, and then steps S111-S113 are executed again.

[0094] Regarding step S12, when the actual state of charge is less than the preset state of charge, the actual charging stage of the target battery is determined based on the actual state of charge.

[0095] When the actual state of charge (SOC) is less than the preset SOC, it means that the target battery is in a low SOC charging phase. In this embodiment, the low SOC charging phase is divided into smaller SOC increments, as shown in Table 2. Table 2 divides the charging phase with an SOC greater than 30% into increments of 10%, and the charging phase with an SOC less than 30% into increments smaller than 10%, such as 4%, 6%, 5%, etc.

[0096] Table 2

[0097]

[0098] The current actual charging stage can be determined based on the target battery's current actual state of charge (SOC). For example, when the SOC is 6%, the corresponding actual charging stage is 4%-10%.

[0099] Regarding step S13, the target limit charging rate corresponding to the actual charging stage is determined based on the correspondence between the actual charging stage and the charging stage and the limit charging rate.

[0100] The relationship between charging stages and maximum charging rates can be obtained from the battery's factory data or through battery testing. The maximum charging rate refers to the highest charging rate at which the battery can ensure safety during the current charging stage, guaranteeing that the battery's polarization remains within a reasonable range during charging. Table 3 shows the relationship between the normal charging rate, maximum charging rate, and charging stages for a specific battery.

[0101] Table 3

[0102]

[0103] The target maximum charging rate corresponding to the current charging stage can be determined by referring to Table 3 of the actual charging stage. For example, when the SOC is 6%, the corresponding actual charging stage is 4%-10%, and the corresponding maximum charging rate is 2.5.

[0104] Regarding step S14, the actual charging rate is determined based on the target limit charging rate, and the target battery is controlled to charge at the actual charging rate during the actual charging phase.

[0105] The actual charging rate of the target battery during the actual charging phase can be determined based on the target limit charging rate using any of the following three methods.

[0106]

Method 1

[0107] Step S21: Starting from the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0108] Step S22: Control the actual charging rate of the target battery to decrease as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0109] Starting from the moment the target limit charging rate is determined, i.e., after step S13 is executed, charging begins in the actual charging phase according to the target limit charging rate. At this moment, the target limit charging rate is the actual charging rate. The target limit charging rate is the initial charging rate of the actual charging phase. As time progresses, the actual state of charge (SBC) gradually increases. During this process, the actual charging rate of the target battery is controlled to decrease as the SBC increases, until the actual charging phase ends.

[0110] The actual charging rate decreases either linearly or non-linearly, and the appropriate pattern can be chosen based on the specific circumstances. For example, when the actual charging rate decreases linearly, Formula 1 can be used as a reference.

[0111] C1=a1*SOC+b1 Formula 1

[0112] Where C1 is the actual charging rate, a1 and b1 are constants, and SOC is the actual state of charge.

[0113] In other words, starting from the moment the target limit charging rate is determined, charging begins at the target limit charging rate as the initial charging rate, and the actual charging rate gradually decreases until the current actual charging ends.

[0114]

Method 2

[0115] Step S31: Starting from the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0116] Step S32: Control the actual charging rate of the target battery to decrease as the actual state of charge of the target battery increases;

[0117] Step S33: Monitor the actual rate of change of the charging voltage of the target battery as the actual charging rate of the target battery decreases.

[0118] Step S34: When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery is controlled to increase as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0119] Starting from the moment the target limit charging rate is determined, i.e., after step S13 is executed, charging begins in the actual charging phase according to the target limit charging rate. At this moment, the target limit charging rate is the actual charging rate. The target limit charging rate is the initial charging rate of the actual charging phase. As time progresses, the actual state of charge gradually increases. During this process, the actual charging rate of the target battery decreases as the actual state of charge increases.

[0120] During the process of controlling the actual charging rate of the target battery to decrease as the actual state of charge increases, the actual rate of change of the target battery's charging voltage is monitored. When the actual rate of change is less than the preset rate of change, it means that the current charging process is good, and the actual charging rate of the target battery can continue to be controlled to decrease as the actual state of charge increases. When the actual rate of change is greater than the preset rate of change, it means that the current charging process is too fast. In this case, starting from the moment the actual rate of change exceeds the preset rate of change, the actual charging rate of the target battery should be controlled to increase as the actual state of charge of the target battery increases until the actual charging phase ends.

[0121] The preset rate of change can be set according to the actual situation, for example, it can be 5mV / s.

[0122] The actual charging rate decreases either linearly or non-linearly, and the appropriate pattern can be chosen based on the specific circumstances. For example, when the actual charging rate decreases linearly, Formula 1 mentioned above can be used as a reference. Here, a1 and b1 are constants, and a1 and b1 may differ for different actual charging stages.

[0123] The actual charging rate increases either linearly or non-linearly, and the appropriate pattern can be chosen based on the specific circumstances. For example, when the actual charging rate decreases linearly, Formula 2 can be used as a reference.

[0124] C2 = a2 * SOC + b2 (Formula 2)

[0125] Where C2 is the actual charging rate, a2 and b2 are constants, and SOC is the actual state of charge.

[0126] In other words, starting from the moment the target limit charging rate is determined, charging begins with the target limit charging rate as the initial charging rate. The actual charging rate gradually decreases until the voltage change rate exceeds the preset change rate. Then, starting from the charging rate at the current moment, the charging rate gradually increases until the current actual charging ends.

[0127]

Method 3

[0128] Step S41: Starting from the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0129] Step S42: Control the actual charging rate of the target battery to decrease as the actual state of charge of the target battery increases;

[0130] Step S43: As the actual charging rate of the target battery decreases, monitor the actual rate of change of the charging voltage of the target battery.

[0131] Step S44: When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery is controlled to increase as the actual state of charge of the target battery increases.

[0132] Step S45: When the actual charging rate is equal to the target limit charging rate, continue charging at the target limit charging rate until the actual charging phase ends.

[0133] The processes of steps S41-S44 are the same as those involved in Method 2 described above, and will not be repeated here. The difference between Method 2 and Method 3 is that Method 2 controls the actual charging rate of the target battery to increase as the actual state of charge of the target battery increases until the current actual charging stage ends, while Method 3 stops increasing the actual state of charge after it reaches the target limit charging rate, and continues charging at the target limit charging rate until the current actual charging stage ends.

[0134] In summary, this embodiment monitors the actual state of charge (SOC) of the target battery during charging. Based on the SOC, it identifies charging stages where the target battery is in a low SOC. According to the correspondence between the actual charging stage and the maximum charging rate, it determines the target maximum charging rate for the actual charging stage. Then, it determines the actual charging rate based on the target maximum charging rate and controls the target battery to charge at the actual charging rate during the actual charging stage. Therefore, this embodiment maximizes the charging rate within the range of less than or equal to the maximum charging rate during the charging stage when the target battery is in a low SOC, thereby shortening the charging time. Charging within the range of less than or equal to the maximum charging rate also avoids significant polarization, reducing the degree of polarization. In other words, it maximizes the charging rate while minimizing polarization, shortening the charging time, improving charging efficiency, and increasing the amount of electricity charged.

[0135] Based on the same inventive concept, this embodiment provides as follows: Figure 2 The power battery charging device shown includes:

[0136] The state of charge monitoring module 21 is used to monitor the actual state of charge of the target battery during the charging process of the target battery.

[0137] The charging stage determination module 22 is used to determine the current actual charging stage of the target battery based on the actual state of charge when the actual state of charge is less than the preset state of charge.

[0138] The rate determination module 23 is used to determine the target limit charging rate corresponding to the actual charging stage based on the actual charging stage and the correspondence between the charging stage and the limit charging rate.

[0139] The charging control module 24 is used to determine the actual charging rate based on the target limit charging rate and control the target battery to charge at the actual charging rate during the actual charging phase.

[0140] Furthermore, the charging control module 24 is used for:

[0141] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0142] The actual charging rate of the target battery is controlled to decrease as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0143] Furthermore, the charging control module 24 is used for:

[0144] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0145] The actual charging rate of the target battery decreases as the actual state of charge of the target battery increases;

[0146] During the process of decreasing the actual charging rate of the target battery, monitor the actual rate of change of the charging voltage of the target battery;

[0147] When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery is increased as the actual state of charge of the target battery increases, until the actual charging phase ends.

[0148] Furthermore, the charging control module 24 is used for:

[0149] From the moment the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase.

[0150] The actual charging rate of the target battery decreases as the actual state of charge of the target battery increases;

[0151] During the process of decreasing the actual charging rate of the target battery, monitor the actual rate of change of the charging voltage of the target battery;

[0152] When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery increases as the actual state of charge of the target battery increases.

[0153] When the actual charging rate equals the target limit charging rate, continue charging at the target limit charging rate until the actual charging phase ends.

[0154] Furthermore, the charging control module 24 is used for:

[0155] The actual charging rate of the target battery increases linearly with the increase of the actual state of charge of the target battery.

[0156] Furthermore, the charging control module 24 is used for:

[0157] The actual charging rate of the target battery decreases linearly as the actual state of charge of the target battery increases.

[0158] Furthermore, the charging stage determination module 22 is used to determine the target charging stage of the target battery based on the actual state of charge when the actual state of charge is greater than the preset state of charge.

[0159] The rate determination module 23 is used to determine the target conventional charging rate corresponding to the target charging stage based on the target charging stage and the correspondence between the charging stage and the conventional charging rate.

[0160] The charging control module 24 is used to control the target battery to be charged at the target conventional charging rate during the target charging phase.

[0161] Based on the same inventive concept, this embodiment provides as follows: Figure 3 An electronic device shown includes:

[0162] Processor 31;

[0163] Memory 32 is used to store executable instructions of processor 31;

[0164] The processor 31 is configured to execute a power battery charging method as described above.

[0165] Based on the same inventive concept, this embodiment provides a non-transitory computer-readable storage medium, which, when the instructions in the storage medium are executed by the processor 31 of the electronic device, enables the electronic device to perform a power battery charging method as described above.

[0166] Since the electronic device described in this embodiment is an electronic device used to implement the information processing method in the embodiments of this application, those skilled in the art can understand the specific implementation methods and various variations of the electronic device in this embodiment based on the information processing method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any electronic device used by those skilled in the art to implement the information processing method in the embodiments of this application falls within the scope of protection of this application.

[0167] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0168] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0169] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0170] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0171] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0172] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for charging a power battery, characterized in that, The method includes: During the charging process of the target battery, the actual state of charge of the target battery is monitored; When the actual state of charge is less than the preset state of charge, the actual charging stage of the target battery is determined based on the actual state of charge. Based on the actual charging stage and the correspondence between the charging stage and the limit charging rate, the target limit charging rate corresponding to the actual charging stage is determined. Determining the actual charging rate based on the target maximum charging rate, and controlling the target battery to charge at the actual charging rate during the actual charging phase, includes: Starting from the moment when the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase. The actual charging rate of the target battery is controlled to decrease as the actual state of charge of the target battery increases; During the process of the actual charging rate of the target battery decreasing, the actual rate of change of the charging voltage of the target battery is monitored; When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery is controlled to increase as the actual state of charge of the target battery increases; When the actual charging rate is equal to the target limit charging rate, charging continues at the target limit charging rate until the actual charging phase ends.

2. The method as described in claim 1, characterized in that, The control of increasing the actual charging rate of the target battery as the actual state of charge of the target battery increases includes: The actual charging rate of the target battery is controlled to increase linearly as the actual state of charge of the target battery increases.

3. The method as described in claim 1, characterized in that, The control of decreasing the actual charging rate of the target battery as the actual state of charge of the target battery increases includes: The actual charging rate of the target battery is controlled to decrease linearly as the actual state of charge of the target battery increases.

4. The method as described in claim 1, characterized in that, When the actual state of charge is greater than the preset state of charge, the method further includes: The target charging stage of the target battery is determined based on the actual state of charge. Based on the target charging stage and the correspondence between the charging stage and the conventional charging rate, the target conventional charging rate corresponding to the target charging stage is determined. The target battery is controlled to charge at the target conventional charging rate during the target charging phase.

5. A power battery charging device, characterized in that, The device includes: A state of charge monitoring module is used to monitor the actual state of charge of the target battery during the charging process. The charging stage determination module is used to determine the current actual charging stage of the target battery based on the actual state of charge when the actual state of charge is less than the preset state of charge. The rate determination module is used to determine the target limit charging rate corresponding to the actual charging stage based on the actual charging stage and the correspondence between the charging stage and the limit charging rate. A charging control module, configured to determine the actual charging rate based on the target maximum charging rate, and control the target battery to charge at the actual charging rate during the actual charging phase, includes: Starting from the moment when the target limit charging rate is determined, the target battery is charged according to the target limit charging rate during the actual charging phase. The actual charging rate of the target battery is controlled to decrease as the actual state of charge of the target battery increases; During the process of the actual charging rate of the target battery decreasing, the actual rate of change of the charging voltage of the target battery is monitored; When the actual rate of change is greater than the preset rate of change, the actual charging rate of the target battery is controlled to increase as the actual state of charge of the target battery increases; When the actual charging rate is equal to the target limit charging rate, charging continues at the target limit charging rate until the actual charging phase ends.

6. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute a power battery charging method as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform a power battery charging method as described in any one of claims 1 to 4.

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