Battery pack management method, device, and apparatus, and readable storage medium

Abstract

The application discloses a battery pack management method, device and equipment and a readable storage medium, relates to the technical field of battery pack management, and comprises the following steps: step S10, acquiring the battery parameters of any battery module of a battery pack; step S20, determining the working state of the battery module according to the battery parameters of the battery module; step S30, if the battery module is in the reversible fault warning working state, controlling the battery module to be disconnected from the remaining battery modules of the battery pack for a preset time period, and then automatically connected to the remaining battery modules of the battery pack again; and step S40, if the battery module is in the irreversible fault working state, controlling the battery module to remain disconnected from the remaining battery modules of the battery pack. The application details the working state of each battery module of the battery pack, reduces the probability that the whole battery pack is disabled due to the failure of a single or multiple battery modules, and makes the use efficiency of the battery pack higher.

Description

Technical Field

[0001] This invention relates to the field of battery pack management technology, and in particular to a battery pack management method, apparatus, device, and readable storage medium. Background Technology

[0002] New energy vehicles include hybrid electric vehicles (HEVs), battery electric vehicles (BEVs), fuel cell electric vehicles (FCEVs), and other new energy vehicles. Most of these new energy vehicles are equipped with battery packs, which are composed of multiple battery modules arranged neatly, typically connected in series via copper busbars. Therefore, when any battery module fails, the entire battery pack cannot charge or discharge normally, reducing its efficiency and lifespan. Summary of the Invention

[0003] This invention provides a battery pack management method, apparatus, device, and readable storage medium to solve the technical problem in the prior art where a single module of a battery pack fails, causing the entire battery pack to be unable to charge and discharge normally.

[0004] Firstly, a method for managing a battery pack is provided, comprising the following steps:

[0005] Obtain the battery parameters of any battery module in the battery pack;

[0006] The operating state of the battery module is determined based on the battery parameters of the battery module; wherein, the operating state includes normal operating state, reversible fault warning operating state, and irreversible fault operating state;

[0007] If the battery module is in the reversible fault alarm working state, the battery module will be disconnected from the other battery modules of the battery pack for a preset period of time, and then automatically reconnected to the other battery modules of the battery pack.

[0008] If the battery module is in the irreversible fault state, then the battery module is kept disconnected from the other battery modules in the battery pack.

[0009] In some embodiments, the step of controlling the battery module to automatically reconnect with the other battery modules in the battery pack after being disconnected from the battery module for a preset period of time when the battery module is in the reversible fault alarm working state includes:

[0010] After determining the reversible fault type in which the battery module is in the reversible fault warning working state, and controlling the battery module to disconnect from the other battery modules in the battery pack for a preset time period corresponding to the reversible fault type, the battery module is automatically reconnected to the other battery modules in the battery pack.

[0011] In some embodiments, after determining the reversible fault type in which the battery module is in the reversible fault warning operating state, the method further includes:

[0012] A reversible fault repair strategy is generated based on the reversible fault type, and the reversible fault repair strategy is sent to the vehicle's display terminal so that the display terminal displays the reversible fault repair strategy.

[0013] In some embodiments, if a battery module in the battery pack is in a reversible fault warning state and / or an irreversible fault state, then fault information of the battery pack is generated and sent to the vehicle's display terminal so that the display terminal displays the fault information of the battery pack.

[0014] The fault information of the battery pack includes: module information, reversible fault type and reversible fault repair process of battery modules in reversible fault warning state; and / or, module information and irreversible fault type of battery modules in irreversible fault working state.

[0015] In some embodiments, a first number of battery modules in an irreversible fault operating state and a second number of battery modules in a reversible fault operating state are determined.

[0016] If the first number exceeds the first preset number, or the second number exceeds the second preset number, or the sum of the first and second numbers exceeds the third preset number, an alarm signal is generated and sent to the vehicle's display terminal so that the display terminal displays the alarm signal.

[0017] In some embodiments, the step of determining the operating state of the battery module based on the battery parameters of the battery module includes:

[0018] If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset first threshold but does not exceed a preset second threshold, then the battery module is determined to be in a reversible fault alarm working state; wherein, the preset second threshold is greater than the preset first threshold;

[0019] If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset second threshold, the battery module is determined to be in an irreversible fault operating state.

[0020] In some embodiments, the step of obtaining the battery parameters of any battery module in the battery pack includes:

[0021] Obtain one or more of the following parameters from any battery module in the battery pack: battery voltage, battery current, and battery temperature.

[0022] Secondly, a battery pack management device is provided, comprising:

[0023] An acquisition unit is used to acquire battery parameters of any battery module in a battery pack.

[0024] A determining unit is configured to determine the operating state of the battery module based on the battery parameters of the battery module; wherein the operating state includes a normal operating state, a reversible fault warning operating state, and an irreversible fault operating state;

[0025] The first control unit is configured to, if the battery module is in the reversible fault alarm working state, control the battery module to disconnect from the other battery modules of the battery pack for a preset period of time, and then automatically reconnect the battery module to the other battery modules of the battery pack.

[0026] The second control unit is configured to keep the battery module disconnected from the other battery modules in the battery pack if the battery module is in the irreversible fault operating state.

[0027] Thirdly, a computer device is provided, comprising: a memory and a processor, wherein the memory stores at least one instruction, the at least one instruction being loaded and executed by the processor to implement the aforementioned battery pack management method.

[0028] Fourthly, a computer-readable storage medium is provided, the computer storage medium storing computer instructions that, when executed by a computer, cause the computer to perform the aforementioned battery pack management method.

[0029] The beneficial effects of the technical solution provided by this invention include:

[0030] This invention provides a battery pack management method, apparatus, device, and readable storage medium. First, the battery parameters of any battery module in the battery pack are acquired. Then, the operating state of the battery module is determined based on the battery parameters. Finally, based on the operating state of the battery module, it is controlled to disconnect from the other battery modules in the battery pack for a preset time period, and then automatically reconnect to the other battery modules in the battery pack, or it is controlled to remain disconnected from the other battery modules in the battery pack. This invention refines the operating state of each battery module in the battery pack, reducing the probability of the entire battery pack failing due to the failure of a single or multiple battery modules, resulting in higher battery pack efficiency and extended battery pack lifespan. Attached Figure Description

[0031] 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic flowchart illustrating a battery pack management method provided in an embodiment of the present invention;

[0033] Figure 2 A circuit diagram of a battery pack provided in an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of a battery pack management device provided in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention provides a battery pack management method that can solve the technical problem that when a single module of an existing battery pack fails, the entire battery pack cannot be charged or discharged normally.

[0038] See Figure 1 As shown, this embodiment of the invention provides a battery pack management method, the management method including:

[0039] Step S10: Obtain the battery parameters of any battery module in the battery pack.

[0040] In an optional implementation, each battery module in the battery pack is monitored in real time using a detection device, allowing for the real-time acquisition of battery parameters for each module. These acquired battery parameters can be one or more of the following: battery voltage, battery current, and battery temperature. This application is not limited to these battery parameters; other possible implementations may include other types of battery parameters, as long as they are beneficial for determining the subsequent operating state of the battery module.

[0041] Step S20: Determine the operating state of the battery module based on the battery parameters of the battery module. The operating state includes a reversible fault warning operating state and an irreversible fault operating state.

[0042] In one possible implementation, determining the operating state of the battery module based on its battery parameters includes:

[0043] If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset first threshold but does not exceed a preset second threshold, then the battery module is determined to be in a reversible fault alarm working state; wherein, the preset second threshold is greater than the preset first threshold;

[0044] If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset second threshold, the battery module is determined to be in an irreversible fault operating state.

[0045] The following explanation uses the battery temperature of the battery module as an example to further illustrate this point:

[0046] Assume the battery temperature of the battery module is T, the preset standard battery temperature is T0, the preset first threshold is X, and the preset second threshold is 2X.

[0047] If the difference between the battery parameter T of the battery module and the preset battery standard parameter T0 exceeds the preset first threshold X but does not exceed the preset second threshold 2X, i.e. X < |T-T0| ≤ 2X, then there is a difference between the battery temperature T of the battery module and the preset battery standard temperature T0, but the difference is small, and the battery module is determined to be in a reversible fault alarm working state.

[0048] If the difference between the battery parameter T of the battery module and the preset battery standard parameter T0 exceeds the preset second threshold 2X, i.e. |T-T0|>2X, then the battery temperature T of the battery module is very different from the preset battery standard temperature T0, and the battery module is determined to be in an irreversible fault working state.

[0049] In other possible implementations, the working state of the battery module can be determined based on the battery parameters of the battery module. Alternatively, it can be determined based on the battery parameters and other parameters. For example, the working state of the battery module can be determined by combining the battery parameters with the operating state of the electric vehicle and the environmental parameters of the electric vehicle. Or, the working state of the battery module can be determined by comparing the battery parameters of multiple battery modules in the battery pack. This application embodiment is only an example and is not limited thereto.

[0050] Step S30: If the battery module is in the reversible fault alarm working state, the battery module is disconnected from the other battery modules of the battery pack for a preset time period, and then automatically reconnected to the other battery modules of the battery pack.

[0051] When a battery module is in reversible fault alert mode, it indicates that the fault in that battery module is temporary and can be restored to normal. After a preset time period, the fault in that battery module will be cleared, and the battery module will automatically reconnect to the other battery modules in the battery pack, allowing the entire battery pack to continue charging and discharging normally.

[0052] This application does not limit the specific implementation method of how to connect or disconnect the battery module and the other battery modules in the battery pack. For example, see [link to relevant documentation]. Figure 2 As shown, assuming the battery pack has 12 modules M1-M12 and 12 interlocking switches S1-S12, each interlocking switch consists of normally closed and normally open contacts, and the normally closed and normally open contacts have an interlocking function. Each interlocking switch has a first position and a second position, which cannot be simultaneously turned on or off. When each interlocking switch is in the first position, the corresponding battery module is connected in series with the other battery modules in the battery pack. When each interlocking switch is in the second position, the corresponding battery module is disconnected from the other battery modules in the battery pack. If the battery module is in a reversible fault alarm working state, after controlling the corresponding interlocking switch to be in the second position for a preset time period, the battery module is disconnected from the other battery modules in the battery pack, and then the corresponding interlocking switch is returned to the first position, so that the battery module is connected in series with the other battery modules in the battery pack again.

[0053] When the battery module is in a reversible fault warning state, that is, the difference between the battery parameter T of the battery module and the preset battery standard parameter T0 exceeds the preset first threshold X but does not exceed the preset second threshold 2X, X < |T-T0| ≤ 2X, the battery temperature T of the battery module is significantly different from the preset battery standard temperature T0. However, this may only be a temporary temperature anomaly caused by external factors. Once the interference is removed, the battery module can continue to be connected in series with the battery pack to provide power, and the battery pack will have higher utilization efficiency.

[0054] Step S40: If the battery module is in the irreversible fault working state, then control the battery module to remain disconnected from the other battery modules in the battery pack.

[0055] When a battery module is in an irreversible fault state, it means that the battery module has completely failed and needs to be removed for inspection or replacement. The battery module should be disconnected from the other battery modules in the battery pack, while the other battery modules can continue to charge and discharge normally.

[0056] Referring to the example above, if the battery module is in an irreversible fault operating state, that is, the difference between the battery parameter T of the battery module and the preset battery standard parameter T0 exceeds the preset second threshold 2X, |T-T0|>2X, then the battery temperature T of the battery module is very different from the preset battery standard temperature T0. Under the premise of ensuring driver safety, the corresponding interlock switch is controlled to be in the second position, so that the battery module is disconnected from the other battery modules in the battery pack, preventing the linkage effect between battery modules and protecting the battery pack.

[0057] In addition, if the battery module is in the normal operating state, the battery module is connected in series with the other battery modules in the battery pack.

[0058] The battery pack management method in this embodiment of the invention first obtains the battery parameters of any battery module in the battery pack, then determines the working state of the battery module based on the battery parameters, and finally controls the battery module to be disconnected from the other battery modules in the battery pack for a preset time period based on its working state, and then automatically reconnects to the other battery modules in the battery pack, or controls it to remain disconnected from the other battery modules in the battery pack. This invention refines the working state of each battery module in the battery pack, reduces the probability of the entire battery pack failing due to the failure of a single or multiple battery modules, resulting in higher battery pack utilization efficiency and extended battery pack lifespan.

[0059] As an optional implementation, in one embodiment of the invention, the step of controlling the battery module to automatically reconnect with the other battery modules of the battery pack after being disconnected from the battery module for a preset period of time when the battery module is in the reversible fault alarm working state includes:

[0060] After determining the reversible fault type in which the battery module is in the reversible fault warning working state, and controlling the battery module to disconnect from the other battery modules in the battery pack for a preset time period corresponding to the reversible fault type, the battery module is automatically reconnected to the other battery modules in the battery pack.

[0061] Specifically, the reversible fault types in the reversible fault warning operation state include battery temperature rise due to ambient temperature, voltage drop due to insufficient power, or current rise due to system error. The preset time periods corresponding to these faults can be progressively longer, from mild to severe, depending on the severity of the fault. For example, a minimum time period T can be set: if the battery module is in the reversible fault warning operation state with a current rise due to a system error, the battery module is disconnected from the other battery modules in the battery pack for the corresponding time period T, and then automatically reconnected to the other battery modules in the battery pack. If the battery module is in the reversible fault warning operation state with a voltage drop due to insufficient power, the battery module is disconnected from the other battery modules in the battery pack for the corresponding time period 3T, and then automatically reconnected to the other battery modules in the battery pack. If the reversible fault type of the battery module in the reversible fault alarm state is battery temperature rise caused by ambient temperature, the battery module will be disconnected from the other battery modules in the battery pack for a period of 5T corresponding to the reversible fault type, and then automatically reconnected to the other battery modules in the battery pack. The more severe the reversible fault of the battery module, the longer the disconnection time between the battery module and the other battery modules in the battery pack will be, thus ensuring greater safety.

[0062] It should be noted that the preset time periods corresponding to the above reversible fault types are only illustrative examples. The specific time length can be adjusted according to the actual situation. For example, the preset time period corresponding to each reversible fault type can be determined by statistically analyzing historical data on reversible fault types and repair times.

[0063] Based on the above embodiments, as an optional implementation, in one embodiment, the reversible fault type of the battery module in the reversible fault warning working state is determined, and the battery module is disconnected from the other battery modules in the battery pack for a preset time period corresponding to the reversible fault type. Then, the battery parameters of the battery module are acquired again, and the working state of the battery module is determined based on the battery parameters. If the working state is a normal working state, it is automatically reconnected to the other battery modules in the battery pack.

[0064] Specifically, if the difference between the battery parameters of the battery module and the preset battery standard parameters does not exceed a preset first threshold, the corresponding interlock switch is controlled to be in the first position, so that the battery module is connected in series with the other battery modules of the battery pack again; otherwise, the corresponding interlock switch is controlled to be in the second position, so that the battery module remains disconnected from the other battery modules of the battery pack.

[0065] If the operating state is still in the reversible fault warning state, the operating state of the battery module can be determined again after a preset time period corresponding to the reversible fault type. Once the battery module is in the normal operating state, it can be connected in series with the other battery modules in the battery pack again. Alternatively, after another preset time period corresponding to the reversible fault type, it can be automatically connected in series with the other battery modules in the battery pack again.

[0066] As an optional implementation, in one embodiment of the invention, after the step of determining the reversible fault type in which the battery module is in the reversible fault warning operating state, the method further includes:

[0067] A reversible fault repair strategy is generated based on the reversible fault type, and the reversible fault repair strategy is sent to the vehicle's display terminal so that the display terminal displays the reversible fault repair strategy.

[0068] Specifically, if the reversible fault type of the battery module in the reversible fault warning state is a system error causing an increase in current, the generated reversible fault repair strategy is as follows: the BMS activates the automatic balancing mode or charges the battery pack, and sends the reversible fault repair strategy to the vehicle's display terminal, causing the display terminal to display the reversible fault repair strategy. While the display terminal displays the reversible fault repair strategy, the strategy can be executed automatically or manually by the driver according to actual settings.

[0069] Similarly, if the reversible fault type of the battery module in the reversible fault warning working state is the battery temperature rise caused by ambient temperature, the reversible fault repair strategy that can be generated is: to make the vehicle body stationary and wait for the overall vehicle temperature to drop to the set temperature, or to start the vehicle air conditioning system to automatically cool down, and send the reversible fault repair strategy to the vehicle's display terminal so that the display terminal displays the reversible fault repair strategy.

[0070] If the reversible fault type of the battery module in the reversible fault warning working state is an increase in current caused by a BMS system error, the reversible fault repair strategy that can be generated is: restart the BMS, or briefly disconnect and then reconnect the battery module, and send the reversible fault repair strategy to the vehicle's display terminal so that the display terminal displays the reversible fault repair strategy.

[0071] As an optional implementation, in one embodiment of the invention, if any battery module in the battery pack is in a reversible fault warning state and / or an irreversible fault state, fault information of the battery pack is generated and sent to the vehicle's display terminal so that the display terminal displays the fault information of the battery pack. The fault information of the battery pack includes: module information, reversible fault type, and reversible fault repair progress of the battery modules in the reversible fault warning state; and / or, module information and irreversible fault type of the battery modules in the irreversible fault state.

[0072] Specifically, the module information for battery modules in either a reversible fault warning state or an irreversible fault state may include the battery module's model and serial number. The reversible fault repair process may include the waiting time required for repair. Additionally, some extra information can be sent to the vehicle's display terminal, such as the remaining battery power of all other battery modules and the driving range supported by all other battery modules.

[0073] As an optional implementation, in one embodiment of the invention, a first number of battery modules in an irreversible fault operating state and a second number of battery modules in a reversible fault operating state are determined.

[0074] If the first number exceeds the first preset number, or the second number exceeds the second preset number, or the sum of the first and second numbers exceeds the third preset number, an alarm signal is generated and sent to the vehicle's display terminal so that the display terminal displays the alarm signal.

[0075] Specifically, for example, the first preset number can be set to 2, the second preset number can be set to 3, and the third preset number can be set to 3. If the first number of battery modules in an irreversible fault state is 3, an alarm signal is generated and sent to the vehicle's display terminal so that the display terminal displays the alarm signal. If the second number of battery modules in a reversible fault state is 4, an alarm signal is also generated and sent to the vehicle's display terminal. If the first number of battery modules in an irreversible fault state is 1 and the second number of battery modules in a reversible fault state is 3, an alarm signal is also generated and sent to the vehicle's display terminal. This overall control of the number of battery modules in both irreversible and reversible fault states improves the utilization efficiency of the battery pack.

[0076] This application does not limit the specific form of the alarm signal. For example, the alarm signal may include a first number, a second number, or a third number, as well as suggested measures for the user. For example, the alarm information may include: "The first number of the battery module in an irreversible fault state is 3, which is too many. It is recommended that you replace the battery module." The above is only an exemplary description, and this application is not limited thereto.

[0077] It should be noted that the first preset number, the second preset number, and the third preset number are all illustrative examples, and can be set according to actual needs. The embodiments of this application are not limited thereto.

[0078] See Figure 3 As shown in the figure, this embodiment of the invention also provides a battery pack management device, which includes: an acquisition unit, a determination unit, a first control unit, and a second control unit.

[0079] The acquisition unit is used to acquire the battery parameters of any battery module in the battery pack.

[0080] The determining unit is used to determine the working state of the battery module based on the battery parameters of the battery module; wherein, the working state includes normal working state, reversible fault warning working state and irreversible fault working state.

[0081] The first control unit is configured to, if the battery module is in the reversible fault alarm working state, control the battery module to disconnect from the other battery modules of the battery pack for a preset period of time, and then automatically reconnect the battery module to the other battery modules of the battery pack.

[0082] The second control unit is used to keep the battery module disconnected from the other battery modules in the battery pack if the battery module is in the irreversible fault operating state.

[0083] It should be noted that those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the above-described apparatus and each unit can be referred to the corresponding processes in the aforementioned battery pack management method embodiments, and will not be repeated here.

[0084] The battery pack management device provided in the above embodiments can be implemented as a computer program, which can, for example, Figure 4 It runs on the computer device shown.

[0085] This invention also provides a computer device, including: a memory, a processor, and a network interface connected via a system bus, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement all or part of the steps of the aforementioned battery pack management method.

[0086] The network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the computer device to which the present invention is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0087] A processor can be a CPU, or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor can be a microprocessor, or any conventional processor. The processor is the control center of a computer device, connecting all parts of the computer device through various interfaces and lines.

[0088] Memory can be used to store computer programs and / or modules. The processor implements various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. Memory can mainly include a program storage area and a data storage area. The program storage area can store the operating system, at least one application program required for a function (such as video playback, image playback, etc.), etc.; the data storage area can store data created based on the use of the mobile phone (such as video data, image data, etc.). In addition, memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, SmartMedia Cards (SMC), Secure Digital Cards (SD cards), Flash Cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.

[0089] In one embodiment, the processor is configured to run a computer program stored in memory to perform the following steps:

[0090] Step S10: Obtain the battery parameters of any battery module in the battery pack;

[0091] Step S20: Determine the operating state of the battery module based on the battery parameters of the battery module; wherein the operating state includes a reversible fault warning operating state and an irreversible fault operating state;

[0092] Step S30: If the battery module is in the reversible fault alarm working state, the battery module is disconnected from the other battery modules of the battery pack for a preset time period and then automatically reconnected to the other battery modules of the battery pack.

[0093] Step S40: If the battery module is in the irreversible fault working state, then control the battery module to remain disconnected from the other battery modules in the battery pack.

[0094] As an optional implementation, in one embodiment of the invention, the step of controlling the battery module to automatically reconnect with the other battery modules of the battery pack after being disconnected from the battery module for a preset period of time when the battery module is in the reversible fault alarm working state includes:

[0095] After determining the reversible fault type in which the battery module is in the reversible fault warning working state, and controlling the battery module to disconnect from the other battery modules in the battery pack for a preset time period corresponding to the reversible fault type, the battery module is automatically reconnected to the other battery modules in the battery pack.

[0096] As an optional implementation, in one embodiment of the invention, after the step of determining the reversible fault type in which the battery module is in the reversible fault warning operating state, the method further includes:

[0097] A reversible fault repair strategy is generated based on the reversible fault type, and the reversible fault repair strategy is sent to the vehicle's display terminal so that the display terminal displays the reversible fault repair strategy.

[0098] As an optional implementation, in one embodiment of the invention, if a battery module in the battery pack is in a reversible fault warning state and / or an irreversible fault state, then fault information of the battery pack is generated and sent to the vehicle's display terminal so that the display terminal displays the fault information of the battery pack.

[0099] The fault information of the battery pack includes: module information, reversible fault type and reversible fault repair process of battery modules in reversible fault warning state; and / or, module information and irreversible fault type of battery modules in irreversible fault working state.

[0100] As an optional implementation, in one embodiment of the invention, a first number of battery modules in an irreversible fault operating state and a second number of battery modules in a reversible fault operating state are determined.

[0101] If the first number exceeds the first preset number, or the second number exceeds the second preset number, or the sum of the first and second numbers exceeds the third preset number, an alarm signal is generated and sent to the vehicle's display terminal so that the display terminal displays the alarm signal.

[0102] As an optional implementation, in one embodiment of the invention, the step of determining the operating state of the battery module based on the battery parameters of the battery module includes:

[0103] If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset first threshold but does not exceed a preset second threshold, then the battery module is determined to be in a reversible fault alarm working state; wherein, the preset second threshold is greater than the preset first threshold;

[0104] If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset second threshold, the battery module is determined to be in an irreversible fault operating state.

[0105] This invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements all or part of the steps of the aforementioned battery pack management method.

[0106] The embodiments of the present invention can implement all or part of the aforementioned processes, or they can be accomplished by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various methods described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added to or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0107] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, servers, 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 and optical storage) containing computer-usable program code.

[0108] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0109] The serial numbers in the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0110] 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.

[0111] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

Claims

1. A method for managing a battery pack, characterized in that, Includes the following steps: Obtain the battery parameters of any battery module in the battery pack; The operating state of the battery module is determined based on the battery parameters of the battery module; wherein, the operating state includes a reversible fault warning operating state and an irreversible fault operating state; If the battery module is in the reversible fault alarm working state, determine the reversible fault type of the battery module in the reversible fault alarm working state, and control the battery module to disconnect from the other battery modules of the battery pack for a preset time period corresponding to the reversible fault type, and then automatically reconnect it to the other battery modules of the battery pack. If the battery module is in the irreversible fault state, then the battery module is kept disconnected from the other battery modules in the battery pack.

2. The battery pack management method as described in claim 1, characterized in that, After determining the reversible fault type of the battery module in the reversible fault warning working state, the method further includes: A reversible fault repair strategy is generated based on the reversible fault type, and the reversible fault repair strategy is sent to the vehicle's display terminal so that the display terminal displays the reversible fault repair strategy.

3. The battery pack management method as described in claim 1, characterized in that, Also includes: If any battery module in the battery pack is in a reversible fault warning state and / or an irreversible fault state, then fault information of the battery pack is generated and sent to the vehicle's display terminal so that the display terminal can display the fault information of the battery pack. The fault information of the battery pack includes: module information, reversible fault type and reversible fault repair process of battery modules in reversible fault warning state; and / or, module information and irreversible fault type of battery modules in irreversible fault working state.

4. The battery pack management method as described in claim 1, characterized in that, Also includes: Determine the first number of battery modules in an irreversible fault operating state and the second number of battery modules in a reversible fault operating state. If the first number exceeds the first preset number, or the second number exceeds the second preset number, or the sum of the first and second numbers exceeds the third preset number, an alarm signal is generated and sent to the vehicle's display terminal so that the display terminal displays the alarm signal.

5. The battery pack management method according to any one of claims 1-4, characterized in that, The step of determining the operating state of the battery module based on the battery parameters of the battery module includes: If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset first threshold but does not exceed a preset second threshold, then the battery module is determined to be in a reversible fault alarm working state; wherein, the preset second threshold is greater than the preset first threshold; If the difference between the battery parameters of the battery module and the preset battery standard parameters exceeds a preset second threshold, the battery module is determined to be in an irreversible fault operating state.

6. The battery pack management method as described in claim 1, characterized in that, The step of obtaining the battery parameters of any battery module in the battery pack includes: Obtain one or more of the following parameters from any battery module in the battery pack: battery voltage, battery current, and battery temperature.

7. A battery pack management device, characterized in that, include: An acquisition unit is used to acquire battery parameters of any battery module in a battery pack. A determining unit is configured to determine the operating state of the battery module based on the battery parameters of the battery module; wherein the operating state includes a reversible fault warning operating state and an irreversible fault operating state; The first control unit is configured to determine the reversible fault type of the battery module in the reversible fault warning working state if the battery module is in the reversible fault warning working state, and control the battery module to disconnect from the other battery modules of the battery pack for a preset time period corresponding to the reversible fault type, and then automatically reconnect the battery module to the other battery modules of the battery pack. The second control unit is configured to keep the battery module disconnected from the other battery modules in the battery pack if the battery module is in the irreversible fault operating state.

8. A computer device, characterized in that, include: A memory and a processor, wherein the memory stores at least one instruction, which is loaded and executed by the processor to implement the battery pack management method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions that, when executed by a computer, cause the computer to perform the battery pack management method according to any one of claims 1 to 6.

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