Vehicle battery charging monitoring method, device and cloud battery management platform

Abstract

The present application discloses a charging monitoring method, device and cloud-based battery management platform for vehicle batteries, and relates to the field of battery management technology. The charging monitoring method includes: during the process of charging the vehicle, based on the current maximum charge and discharge capacity, fixed current value and actual charging time, determining whether the battery management system that manages the battery pack has failed; when it is determined that the battery management system has failed, based on the current maximum charge and discharge capacity, fixed current value and the actual charge of the battery pack during the charging process, determining the standard charging time for charging the battery pack; based on the standard charging time and the fault charging time node of the battery management system when it fails, determining the corresponding overcharge threshold time of the battery pack. The present application can stop overcharging the battery pack when the battery management system fails, thereby improving the safety of the battery pack during the charging process.

Description

Technical Field

[0001] The present application relates to the field of battery management technology, and in particular to a vehicle battery charging monitoring method, device, and cloud-based battery management platform. Background Art

[0002] At present, with the development of society and the advancement of science and technology, more and more users are beginning to use electric vehicles for transportation. As one of the main power sources of electric vehicles, power batteries must be strictly prohibited from overcharging during the charging process. Once the power battery is overcharged, it will cause excessive lithium embedding in the negative electrode of the battery, causing safety hazards. Severe overcharging will cause the vehicle to spontaneously combust, threatening the life and property of the driver and passengers.

[0003] However, the traditional way to prevent power batteries from overcharging is usually to set up overvoltage protection in the battery management system. Specifically, when the single cell inside the battery pack reaches the upper limit cut-off voltage but charging is not stopped, the overvoltage protection is controlled by the battery management system. However, when the control of the battery management system fails or gets stuck, the battery management system will not be able to continue to protect the power battery. At this time, the power battery still has the problem of overcharging and is less safe. In the case of severe overcharging, it will still cause vehicle spontaneous combustion and affect the safety of the driver and passengers. Summary of the Invention

[0004] The embodiments of the present application provide a charging monitoring method, device and cloud-based battery management platform for a vehicle battery. The embodiments provided by the present application solve the technical problem in the prior art that it is impossible to determine whether the battery pack is overcharged when the battery management system fails. The embodiments provided by the present application can stop overcharging the battery pack when the battery management system fails, thereby improving the safety of the battery pack during the charging process.

[0005] In a first aspect of an embodiment of the present application, an embodiment of the present application provides a method for monitoring the charging of a vehicle battery, the method comprising:

[0006] During the charging process of the vehicle, obtaining the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage;

[0007] Determining whether a battery management system that manages the battery pack fails based on the current maximum charge and discharge capacity, the fixed current value, and the actual charging time;

[0008] When it is determined that the battery management system has failed, determining a standard charging time for charging the battery pack based on the current maximum charge and discharge amount, the fixed current value, and the actual charge of the battery pack during the charging process, wherein the standard charging time is used to represent the time required for the battery pack to be charged from the actual charge to a fully charged state;

[0009] Based on the standard charging time and a fault charging time node of the battery management system when it fails, an overcharge threshold time corresponding to the battery pack is determined, so that the battery pack stops charging within the overcharge threshold time.

[0010] In a feasible implementation manner, determining whether a battery management system that manages the battery pack fails based on the current maximum charge and discharge capacity, the fixed current value, and the actual charging time includes:

[0011] Determining a preset charging time of the battery pack in the constant current charging stage based on a current maximum charge and discharge capacity of the battery pack in the vehicle and the fixed current value of the battery pack in the constant current charging stage;

[0012] If the preset charging time is less than the actual charging time of the battery pack in the constant current charging stage, it is determined that the battery management system managing the battery pack has failed.

[0013] In a feasible implementation manner, when it is determined that the battery management system has failed, determining a standard charging time for charging the battery pack based on the current maximum charge and discharge capacity, the fixed current value, and the actual charge of the battery pack during the charging process includes:

[0014] When it is determined that the battery management system has failed, determining the amount of charge to be charged of the battery pack based on a preset expected charge of the battery pack, the actual charge of the battery pack during charging, and the current maximum charge and discharge amount;

[0015] A standard charging time for charging the battery pack is determined based on the amount of electricity to be charged and the fixed current value.

[0016] In a feasible implementation manner, when it is determined that the battery management system has failed, the amount of charge to be charged of the battery pack is determined based on a preset expected charge of the battery pack, an actual charge of the battery pack during the charging process, and the current maximum charge and discharge capacity, wherein the preset expected charge is used to represent the charge that the battery pack is expected to achieve, and includes:

[0017] When it is determined that the battery management system has failed, determining the charge capacity to be charged of the battery pack based on a preset expected charge capacity of the battery pack and an actual charge capacity of the battery pack during charging, wherein the charge capacity to be charged is used to represent the charge capacity required to charge from the actual charge capacity to the preset expected charge capacity;

[0018] The amount of electricity to be charged of the battery pack is determined according to the amount of electricity to be charged and the current maximum charge and discharge amount.

[0019] In a feasible implementation manner, determining the amount of power to be charged of the battery pack according to the amount of power to be charged and the current maximum charge and discharge amount includes:

[0020] The product of the amount of charge to be charged and the current maximum charge and discharge amount is determined as the amount of charge to be charged of the battery pack.

[0021] In a feasible implementation, during the process of charging the vehicle, obtaining the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage includes:

[0022] During the charging process of the vehicle, obtaining health status parameters of the battery pack in the vehicle, a preset battery capacity of the battery pack, a fixed current value of the battery pack in a constant current charging stage, and an actual charging time of the battery pack in the constant current charging stage;

[0023] The current maximum charge and discharge capacity of the battery pack in the vehicle is determined based on the health status parameters of the battery pack and the preset battery capacity of the battery pack, wherein the preset battery capacity is used to characterize the battery capacity of the battery pack when the vehicle leaves the factory.

[0024] In a feasible implementation manner, determining the current maximum charge and discharge capacity of the battery pack in the vehicle based on the health status parameter of the battery pack and the preset battery capacity of the battery pack includes:

[0025] The product of the health status parameter of the battery pack and the preset battery capacity of the battery pack is determined as the current maximum charge and discharge capacity of the battery pack in the vehicle.

[0026] In a second aspect of the embodiments of the present application, the embodiments of the present application provide a vehicle battery charge monitoring device, the vehicle battery charge monitoring device comprising:

[0027] an acquisition module, configured to acquire, during the process of charging the vehicle, the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage;

[0028] A first determination module is used to determine whether a battery management system that manages the battery pack has failed based on the current maximum charge and discharge capacity, the fixed current value, and the actual charging time;

[0029] a second determining module, configured to, when determining that the battery management system has failed, determine a standard charging time for charging the battery pack based on the current maximum charge and discharge amount, the fixed current value, and the actual charge of the battery pack during the charging process, wherein the standard charging time is used to represent the time required for the battery pack to be charged from the actual charge to a fully charged state;

[0030] The third determination module is used to determine the overcharge threshold time corresponding to the battery pack based on the standard charging time and the fault charging time node of the battery management system when it fails, so that the battery pack stops charging within the overcharge threshold time.

[0031] In a third aspect of the embodiments of the present application, the embodiments of the present application provide an electronic device comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor when running, such as the steps of the above-mentioned vehicle battery charging monitoring method.

[0032] In a fourth aspect of the embodiments of the present application, the embodiments of the present application provide a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the vehicle battery charging monitoring method as described above are executed.

[0033] The vehicle battery charging monitoring method, device and cloud-based battery management platform provided in the embodiments of the present application, compared with the prior art, the embodiments provided in the present application obtain the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage and the actual charging time of the battery pack in the constant current charging stage during the charging process of the vehicle, and determine whether the battery management system that manages the battery pack has failed based on the current maximum charge and discharge capacity, fixed current value and actual charging time. When it is determined that the battery management system has failed, the standard charging time for charging the battery pack is determined based on the current maximum charge and discharge capacity, fixed current value and the actual charge of the battery pack during the charging process. Finally, based on the standard charging time and the fault charging time node of the battery management system when it fails, the overcharge threshold time corresponding to the battery pack is determined, so that the battery pack stops charging within the overcharge threshold time. The present application can determine the overcharge threshold time when the battery management system fails, and stop overcharging the battery pack according to the overcharge threshold time, thereby improving the safety of the battery pack during the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A flowchart of a vehicle battery charging monitoring method provided in an embodiment of the present application is shown;

[0035] Figure 2 A structural block diagram of a vehicle battery charging monitoring device provided in an embodiment of the present application is shown;

[0036] Figure 3 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown.

[0037] Figure 2 and Figure 3 The corresponding relationship between the reference numerals and the names of the drawings is as follows:

[0038] 200 vehicle battery charging monitoring device; 210 acquisition module; 220 first determination module; 230 second determination module; 240 third determination module; 300 cloud battery management platform; 310 processor; 320 memory; 330 bus. DETAILED DESCRIPTION

[0039] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0040] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0041] First, the applicable application scenarios of this application are introduced. The embodiments provided in this application are applicable to the field of battery management technology.

[0042] At present, the traditional way to prevent power batteries from overcharging is usually to set overvoltage protection in the battery management system. Specifically, when the single cell inside the battery pack reaches the upper limit cut-off voltage but charging is not stopped, the overvoltage protection is controlled by the battery management system. However, when the control of the battery management system fails or gets stuck, the battery management system will not be able to continue to protect the power battery. At this time, the power battery still has the problem of overcharging and is less safe. In the case of severe overcharging, it will still cause vehicle spontaneous combustion and affect the safety of drivers and passengers.

[0043] Based on this, the embodiments of the present application provide a vehicle battery charging monitoring method, device and cloud-based battery management platform. The embodiments provided by the present application solve the technical problem in the prior art that it is impossible to determine whether the battery pack is overcharged when the battery management system fails. The embodiments provided by the present application can stop overcharging the battery pack when the battery management system fails, thereby improving the safety of the battery pack during the charging process.

[0044] Figure 1 FIG. 1 shows a flow chart of a vehicle battery charging monitoring method provided in an embodiment of the present application, such as Figure 1 As shown, the vehicle battery charging monitoring method includes the following steps:

[0045] S101. During the process of charging the vehicle, obtain the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage.

[0046] In this step, the embodiment provided by the present application first needs to obtain the health status parameters of the battery pack in the vehicle in real time during the process of charging the vehicle, and determine the current maximum charge and discharge capacity of the battery pack during actual use based on the health status parameters of the battery pack; at the same time, the embodiment provided by the present application also needs to obtain the fixed current value of the battery pack in the constant current charging stage and the actual charging time of the battery pack in the constant current charging stage in real time, wherein the current maximum charge and discharge capacity is used to characterize the maximum amount of electricity contained in the battery pack during actual use.

[0047] In the above, the current maximum charge and discharge capacity in the embodiment provided by this application refers to the actual battery capacity of the battery pack under the current health status parameters, which can be specifically represented by C1. Among them, the health status will decrease during the process of continuous charging and discharging of the discharge tube with the current maximum charge and discharge capacity. The current maximum charge and discharge capacity here is different from the battery capacity that has not been charged, that is, the preset battery capacity of the battery pack, which is represented by C0.

[0048] Among them, the health status parameters and fixed current values ​​in the embodiments provided in this application can be customized according to different application scenarios. Here, the current health status parameter of the battery pack in the embodiment provided in this application is determined to be 0.991, and the fixed current value in the embodiment provided in this application is determined to be represented by I.

[0049] Therefore, it is determined that C1=C0*0.991.

[0050] In the above, the fixed current value in the embodiment provided in the present application is the current of the battery pack in the constant current charging stage, and the preset charging time of the current of the battery pack in the constant current charging stage is determined according to the actual situation of the battery pack and the external environment corresponding to the battery pack, and the preset charging time of the battery pack is represented by T1.

[0051] It can be understood that the current maximum charge and discharge capacity, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage in the embodiments provided in this application are usually reflected in a fast charging map or strategy (Fast Charging Map, MAP), so that MAP uploads the attribute parameters of the above battery pack to the cloud battery management platform.

[0052] Among them, in the process of charging the vehicle's battery pack, the battery pack is usually divided into three stages, namely, the constant current charging stage, the constant voltage charging stage and the trickle charging stage. In the constant current charging stage of charging, the battery pack is usually charged rapidly with a larger current until the battery pack is close to a fully charged state; then when the voltage of the battery pack reaches a certain level, the charging stage of the battery pack enters the constant voltage charging stage. At this time, the charging voltage in the battery pack gradually reduces the charging current until it is fully charged; for some battery packs with special requirements, there will be a third battery charging stage, such as the trickle charging stage. In this stage, there will generally be a very small maintenance current in the battery pack to compensate for the self-discharge effect.

[0053] S102: Determine whether a battery management system that manages the battery pack is failed based on the current maximum charge and discharge capacity, the fixed current value, and the actual charging time.

[0054] In this step, after determining the current maximum charge and discharge amount C1 and the fixed current value I, the embodiment provided by the present application needs to determine the preset charging time of the battery pack in the constant current charging stage according to the actual situation of the battery pack and the external environment corresponding to the battery pack, C1 and I, and the preset charging time of the battery pack is represented by T1; and when it is determined that T1 is less than the actual charging time of the battery pack in the constant current charging stage, it is determined that the battery management system that manages the battery pack has failed; when it is determined that T1 is greater than or equal to the actual charging time of the battery pack in the constant current charging stage, it is determined that the battery management system that manages the battery pack has not failed. At this time, the above-mentioned battery management system continues to perform corresponding management and monitoring.

[0055] S103. When it is determined that the battery management system has failed, a standard charging time for charging the battery pack is determined based on the current maximum charge and discharge capacity, the fixed current value, and the actual charge of the battery pack during the charging process, wherein the standard charging time is used to represent the time required for the battery pack to be charged from the actual charge to a fully charged state.

[0056] In this step, when it is determined that the battery management system has failed, the preset expected charge of the battery pack 100% SOC and the actual charge of the battery pack y% SOC during the charging process are used to determine the charge to be charged ΔSOC of the battery pack. After determining ΔSOC, the charge to be charged ΔQ of the battery pack is determined based on the charge to be charged ΔSOC and the current maximum charge and discharge capacity C1. Then, based on the charge to be charged ΔQ and the fixed current value I, the standard charging time for charging the battery pack is determined.

[0057] Wherein, ΔSOC = (100% SOC - γ% SOC);

[0058] ΔQ=ΔSOC*C1=ΔSOC*C0*0.991;

[0059] It can be understood that the standard charging time for charging the battery pack in the embodiments provided in this application can be specifically expressed as deltaT.

[0060] Therefore, de l taT = ΔSOC / I.

[0061] For example, the State of Charge (SOC) in the embodiments provided in this application is an important parameter for measuring the remaining power of a battery, usually expressed as a percentage, reflecting the amount of charge currently stored in the battery relative to its maximum capacity when fully charged. Accurately estimating and managing SOC is crucial to ensuring the performance, safety and life of the battery system, especially in electric vehicles, energy storage systems and other applications that rely on battery power.

[0062] S104: Determine an overcharge threshold time corresponding to the battery pack based on a standard charging time and a fault charging time node when the battery management system fails, so that the battery pack stops charging within the overcharge threshold time.

[0063] In this step, after determining the standard charging time de l taT, the fault charging time node T0 of the battery management system when it fails is collected and recorded in real time, and the difference between the standard charging time de l taT and the fault charging time node T0 is determined as the overcharge threshold time corresponding to the battery pack. After determining the overcharge threshold time, the embodiment provided in this application can send an alarm instruction to the user and after-sales personnel via SMS, phone or APP, warning that the battery management system of the vehicle may fail and the power battery is about to be overcharged, so as to stop charging as soon as possible.

[0064] It can be understood that the overcharge threshold time in the embodiment provided in the present application can be specifically represented by ΔT, therefore, ΔT=deltaT-T0.

[0065] The paper shortage range of the overcharge threshold time ΔT in the embodiment provided by the present application can be customized according to different application scenarios. It is assumed that ΔT in the embodiment provided by the present application can be specifically set to: 0<ΔT≤10min.

[0066] The vehicle battery charging monitoring method provided in the embodiment of the present application, compared with the prior art, obtains the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage during the charging process of the vehicle, and determines whether the battery management system that manages the battery pack has failed based on the current maximum charge and discharge capacity, fixed current value, and actual charging time. When it is determined that the battery management system has failed, the standard charging time for charging the battery pack is determined based on the current maximum charge and discharge capacity, fixed current value, and the actual charge of the battery pack during the charging process. Finally, based on the standard charging time and the fault charging time node of the battery management system when it fails, the overcharge threshold time corresponding to the battery pack is determined, so that the battery pack stops charging within the overcharge threshold time. The present application can determine the overcharge threshold time when the battery management system fails, and stop overcharging the battery pack according to the overcharge threshold time, thereby improving the safety of the battery pack during the charging process and realizing dual safety protection of the battery management system and the cloud-based battery management platform.

[0067] Figure 2 FIG. 1 shows a structural block diagram of a vehicle battery charge monitoring device provided in an embodiment of the present application. Figure 2 As shown, the vehicle battery charge monitoring device 200 includes:

[0068] The acquisition module 210 is used to obtain the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage during the charging process of the vehicle.

[0069] The first determining module 220 is configured to determine whether a battery management system managing the battery pack has failed based on the current maximum charge and discharge capacity, the fixed current value, and the actual charging time.

[0070] The second determination module 230 is used to determine the standard charging time for charging the battery pack based on the current maximum charge and discharge amount, the fixed current value and the actual charge of the battery pack during the charging process when it is determined that the battery management system has failed, wherein the standard charging time is used to represent the time required for the battery pack to be charged from the actual charge to a fully charged state.

[0071] The third determination module 240 is used to determine the overcharge threshold time corresponding to the above-mentioned battery pack based on the above-mentioned standard charging time and the fault charging time node of the above-mentioned battery management system when it fails, so that the above-mentioned battery pack stops charging within the above-mentioned overcharge threshold time.

[0072] Exemplarily, the first determining module 220 is specifically configured to:

[0073] Based on the current maximum charge and discharge capacity of the battery pack in the vehicle and the fixed current value of the battery pack in the constant current charging stage, a preset charging time of the battery pack in the constant current charging stage is determined.

[0074] If the preset charging time is less than the actual charging time of the battery pack in the constant current charging stage, it is determined that the battery management system managing the battery pack has failed.

[0075] Exemplarily, the second determining module 230 is specifically configured to:

[0076] When it is determined that the battery management system fails, the charge to be charged of the battery pack is determined based on the preset expected charge of the battery pack, the actual charge of the battery pack during the charging process, and the current maximum charge and discharge capacity.

[0077] Based on the charge to be charged and the fixed current value, a standard charging time for charging the battery pack is determined.

[0078] Exemplarily, when it is determined that the battery management system has failed, determining the charge to be charged of the battery pack based on a preset expected charge of the battery pack, an actual charge of the battery pack during charging, and the current maximum charge and discharge capacity includes:

[0079] When it is determined that the battery management system has failed, the charge to be charged of the battery pack is determined based on the preset expected charge of the battery pack and the actual charge of the battery pack during the charging process, wherein the charge to be charged is used to represent the charge required to charge from the actual charge to the preset expected charge.

[0080] The charge capacity of the battery pack to be charged is determined according to the charge capacity to be charged and the current maximum charge and discharge capacity.

[0081] Exemplarily, determining the charge capacity to be charged of the battery pack according to the charge capacity to be charged and the current maximum charge and discharge capacity includes:

[0082] The product of the amount of charge to be charged and the current maximum charge and discharge amount is determined as the amount of charge to be charged of the battery pack.

[0083] Exemplarily, the acquisition module 210 is specifically configured to:

[0084] During the process of charging the vehicle, the health status parameters of the battery pack in the vehicle, the preset battery capacity of the battery pack, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage are obtained.

[0085] The current maximum charge and discharge capacity of the battery pack in the vehicle is determined based on the health status parameters of the battery pack and the preset battery capacity of the battery pack, wherein the preset battery capacity is used to characterize the battery capacity of the battery pack when the vehicle leaves the factory.

[0086] Exemplarily, the determining of the current maximum charge and discharge capacity of the battery pack in the vehicle based on the health status parameter of the battery pack and the preset battery capacity of the battery pack includes:

[0087] The product of the health status parameter of the battery pack and the preset battery capacity of the battery pack is determined as the current maximum charge and discharge capacity of the battery pack in the vehicle.

[0088] The vehicle battery charging monitoring device 200 provided in the embodiment of the present application, compared with the prior art, obtains the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage during the charging process of the vehicle, and determines whether the battery management system that manages the battery pack has failed based on the current maximum charge and discharge capacity, fixed current value, and actual charging time. When it is determined that the battery management system has failed, the standard charging time for charging the battery pack is determined based on the current maximum charge and discharge capacity, fixed current value, and the actual charge of the battery pack during the charging process. Finally, based on the standard charging time and the fault charging time node of the battery management system when it fails, the overcharge threshold time corresponding to the battery pack is determined, so that the battery pack stops charging within the overcharge threshold time. The present application can determine the overcharge threshold time when the battery management system fails, and stop overcharging the battery pack according to the overcharge threshold time, thereby improving the safety of the battery pack during the charging process and realizing dual safety protection of the battery management system and the cloud-based battery management platform.

[0089] Figure 3 A schematic diagram of the structure of a cloud battery management platform provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the cloud battery management platform 300 includes a processor 310 , a memory 320 and a bus 330 .

[0090] The memory 320 stores machine-readable instructions executable by the processor 310. When the electronic device 300 is running, the processor 310 communicates with the memory 320 via the bus 330. When the machine-readable instructions are executed by the processor 310, the above-mentioned Figure 1 The specific implementation of the steps of the vehicle battery charging monitoring method in the method embodiment shown can be found in the method embodiment and will not be repeated here.

[0091] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figure 1 The specific implementation of the steps of the vehicle battery charging monitoring method in the method embodiment shown can be found in the method embodiment and will not be repeated here.

[0092] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0093] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0094] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-readable program code.

[0095] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0096] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0097] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0098] An embodiment of the present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device executes the process of the vehicle battery charging monitoring method.

[0099] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, a computer, a server or a data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, a computer, a server or a data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integrations. Available media can be magnetic media, (such as floppy disk, hard disk, tape), optical media (such as DVD) or semiconductor media (such as solid-state drive (SSD)) etc.

[0100] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0101] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0102] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0103] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0104] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0105] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0106] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0107] Obviously, those skilled in the art may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims of this specification and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. A method for monitoring the charging of a vehicle battery, characterized in that: The vehicle battery charging monitoring method includes: During the charging process of the vehicle, obtaining the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage; Determining whether a battery management system that manages the battery pack fails based on the current maximum charge and discharge capacity, the fixed current value, and the actual charging time; When it is determined that the battery management system has failed, determining a standard charging time for charging the battery pack based on the current maximum charge and discharge amount, the fixed current value, and the actual charge of the battery pack during the charging process, wherein the standard charging time is used to represent the time required for the battery pack to be charged from the actual charge to a fully charged state; Based on the standard charging time and a fault charging time node of the battery management system when it fails, an overcharge threshold time corresponding to the battery pack is determined, so that the battery pack stops charging within the overcharge threshold time.

2. The vehicle battery charging monitoring method according to claim 1, characterized in that: Determining whether a battery management system that manages the battery pack fails based on the current maximum charge and discharge amount, the fixed current value, and the actual charging time includes: Determining a preset charging time of the battery pack in the constant current charging stage based on a current maximum charge and discharge capacity of the battery pack in the vehicle and the fixed current value of the battery pack in the constant current charging stage; If the preset charging time is less than the actual charging time of the battery pack in the constant current charging stage, it is determined that the battery management system managing the battery pack has failed.

3. The vehicle battery charging monitoring method according to claim 1, characterized in that: The method of determining, when determining that the battery management system has failed, a standard charging time for charging the battery pack based on the current maximum charge and discharge amount, the fixed current value, and an actual charge of the battery pack during the charging process includes: When it is determined that the battery management system has failed, determining the amount of charge to be charged of the battery pack based on a preset expected charge of the battery pack, the actual charge of the battery pack during charging, and the current maximum charge and discharge amount; A standard charging time for charging the battery pack is determined based on the amount of electricity to be charged and the fixed current value.

4. The vehicle battery charging monitoring method according to claim 3, characterized in that: When it is determined that the battery management system has failed, determining the amount of charge to be charged of the battery pack based on a preset expected charge of the battery pack, an actual charge of the battery pack during charging, and the current maximum charge and discharge capacity, wherein the preset expected charge is used to represent the charge that the battery pack is expected to achieve, includes: When it is determined that the battery management system has failed, determining the charge capacity to be charged of the battery pack based on a preset expected charge capacity of the battery pack and an actual charge capacity of the battery pack during charging, wherein the charge capacity to be charged is used to represent the charge capacity required to charge from the actual charge capacity to the preset expected charge capacity; The amount of electricity to be charged of the battery pack is determined according to the amount of electricity to be charged and the current maximum charge and discharge amount.

5. The vehicle battery charging monitoring method according to claim 4, characterized in that: The determining the amount of power to be charged of the battery pack according to the amount of power to be charged and the current maximum charge and discharge amount includes: The product of the amount of charge to be charged and the current maximum charge and discharge amount is determined as the amount of charge to be charged of the battery pack.

6. The vehicle battery charging monitoring method according to claim 1, characterized in that: The method of obtaining, during the process of charging the vehicle, the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage includes: During the charging process of the vehicle, obtaining health status parameters of the battery pack in the vehicle, a preset battery capacity of the battery pack, a fixed current value of the battery pack in a constant current charging stage, and an actual charging time of the battery pack in the constant current charging stage; The current maximum charge and discharge capacity of the battery pack in the vehicle is determined based on the health status parameters of the battery pack and the preset battery capacity of the battery pack, wherein the preset battery capacity is used to characterize the battery capacity of the battery pack when the vehicle leaves the factory.

7. The vehicle battery charging monitoring method according to claim 6, characterized in that: The determining, based on the health status parameter of the battery pack and the preset battery capacity of the battery pack, a current maximum charge and discharge capacity of the battery pack in the vehicle includes: The product of the health status parameter of the battery pack and the preset battery capacity of the battery pack is determined as the current maximum charge and discharge capacity of the battery pack in the vehicle.

8. A vehicle battery charging monitoring device, characterized in that: The vehicle battery charging monitoring device comprises: an acquisition module, configured to acquire, during the process of charging the vehicle, the current maximum charge and discharge capacity of the battery pack in the vehicle, the fixed current value of the battery pack in the constant current charging stage, and the actual charging time of the battery pack in the constant current charging stage; A first determination module is used to determine whether a battery management system that manages the battery pack has failed based on the current maximum charge and discharge capacity, the fixed current value, and the actual charging time; a second determining module, configured to determine, when determining that the battery management system has failed, a standard charging time for charging the battery pack based on the current maximum charge and discharge amount, the fixed current value, and the actual charge of the battery pack during the charging process, wherein the standard charging time is used to represent the time required for the battery pack to be charged from the actual charge to a fully charged state; The third determination module is used to determine the overcharge threshold time corresponding to the battery pack based on the standard charging time and the fault charging time node of the battery management system when it fails, so that the battery pack stops charging within the overcharge threshold time.

9. A cloud-based battery management platform, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the cloud battery management platform is running, the processor and the memory communicate via the bus, and the machine-readable instructions are executed by the processor to execute the steps of the vehicle battery charging monitoring method as described in any one of claims 1 to 7 above.

10. A computer-readable storage medium, characterized in that A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the steps of the vehicle battery charge monitoring method according to any one of claims 1 to 7 are executed.

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