A method, system, device and electronic device for detecting battery parameters

Abstract

The present application discloses a method, system, device and electronic device for detecting battery parameters. Belonging to the field of battery management technology, the battery parameter detection method includes: obtaining battery parameter data between the current collector and the electrode in each battery cell in the target battery pack; based on the battery parameter data, determining the target cloud digital twin battery model corresponding to the target battery pack, so that the external battery management system can perform fault monitoring on the target battery through the target cloud digital twin battery model, wherein the target cloud digital twin battery model is used to digitize the status of each battery cell and predict the status of the target battery based on the digitized battery parameter data. The embodiment provided by the present application not only improves the accuracy of battery parameter detection, but also improves the adaptability of detection for application scenarios.

Description

Technical Field

[0001] The present application relates to the field of battery management technology, and in particular to a method, system, device and electronic device for detecting battery parameters. Background Art

[0002] With the development of society and the advancement of technology, more and more people are beginning to use new energy sources. Battery packs are important components for storing electrical energy. However, the cells in a battery pack are densely arranged and have little reserved space. Traditional sensors are usually attached to the battery surface and have complex wiring. Therefore, traditional battery testing methods cannot accurately detect the parameters of all cells in the battery pack.

[0003] The existing method for detecting the parameters of battery cells in battery packs on the market usually uses an optocoupler signal receiver to detect the parameters of the battery cells in real time. However, since the optocoupler signal receiver is usually wrapped on the outside of the battery pack and the optocoupler signal receiver is large in size, the optocoupler signal receiver cannot accurately detect the parameters of all battery cells in the battery pack, and is not suitable for application scenarios that have volume requirements, resulting in poor adaptability. Summary of the Invention

[0004] The embodiments of the present application provide a method, system, device and electronic device for detecting battery parameters. The embodiments provided by the present application solve the technical problem of poor accuracy and poor adaptability of the detected battery parameters. The embodiments provided by the present application not only improve the accuracy of battery parameter detection, but also improve the adaptability of detection for application scenarios.

[0005] In a first aspect of the embodiments of the present application, the embodiments of the present application provide a method for detecting battery parameters, the method for detecting battery parameters comprising:

[0006] Obtain battery parameter data between the current collector and the electrode in each cell of the target battery pack;

[0007] Based on the battery parameter data, the target cloud-based digital twin battery model corresponding to the target battery pack is determined so that an external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model. The target cloud-based digital twin battery model is used to digitize the status of each battery cell and predict the status of the target battery based on the digitized battery parameter data.

[0008] In a feasible embodiment, obtaining battery parameter data between current collectors and electrodes in each battery cell in the target battery pack includes:

[0009] A single optical fiber device is passed through between the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, wherein the distance between the single optical fiber device and each current collector is a first distance; the distance between the single optical fiber device and each electrode is a second distance, and the first distance is smaller than the second distance.

[0010] In a feasible embodiment, the electrode includes a positive electrode and a negative electrode, and the single optical fiber device is passed through the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, including:

[0011] A single optical fiber device is passed through between the current collector and the positive electrode of each battery cell in the target battery pack to obtain the first battery parameter data between the current collector and the electrode in each battery cell, or

[0012] A single optical fiber device is passed through between the current collector and the negative electrode of each battery cell in the target battery pack to obtain second battery parameter data between the current collector and the electrode in each battery cell; wherein the accuracy of the first battery parameter data is greater than the accuracy of the second battery parameter data.

[0013] In a feasible implementation, the battery parameter data is optical fiber battery parameter data, and determining the target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data includes:

[0014] According to the optical fiber battery parameter data and the preset signal converter, the optical signal is converted into a CAN signal, and the CAN signal battery parameter data is determined;

[0015] Based on the CAN signal battery parameter data and the preset communication terminal device, the target cloud digital twin battery model corresponding to the target battery pack is determined.

[0016] According to a second aspect of an embodiment of the present application, an embodiment of the present application provides a battery parameter detection system, which includes each battery cell in a target battery pack, a single optical fiber device, a signal converter, and a remote communication terminal device. The single optical fiber device runs through the current collector and the electrode of each battery cell, and the single optical fiber device is communicatively connected to the signal converter, and the signal converter is communicatively connected to the remote communication terminal device.

[0017] In a feasible implementation manner, the single optical fiber device is communicatively connected to the signal converter via a CAN bus.

[0018] In a feasible embodiment, the single optical fiber device passes through between the current collector and the electrode of each battery core and contacts each current collector.

[0019] In a third aspect of the embodiments of the present application, the embodiments of the present application further provide a device for detecting battery parameters, the device for detecting battery parameters comprising:

[0020] An acquisition module is used to obtain battery parameter data between the current collector and the electrode in each battery cell of the target battery pack;

[0021] A determination module is used to determine the target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data, so that an external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model, wherein the target cloud-based digital twin battery model is used to digitize the status of each of the battery cells and predict the status of the target battery based on the digitized battery parameter data.

[0022] In a fourth 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, and when the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to perform the steps of the battery parameter detection method as described above.

[0023] According to a fifth aspect of the embodiments of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the battery parameter detection method as described above are executed.

[0024] The battery parameter detection method, system, device and electronic device provided in the embodiments of the present application, compared with the existing technology, obtains the battery parameter data between the current collector and the electrode in each battery cell in the target battery pack, and determines the target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data, so that the external battery management system can monitor the target battery for faults through the target cloud-based digital twin battery model, thereby improving the accuracy of battery parameter detection while also improving the adaptability of detection to application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 One of the flow charts of a battery parameter detection method provided in an embodiment of the present application is shown;

[0026] Figure 2A structural schematic diagram showing the connection relationship between each battery cell and a single optical fiber device in a battery parameter detection method provided by an embodiment of the present application;

[0027] Figure 3 A schematic diagram showing the structure of a battery parameter detection system provided in an embodiment of the present application is shown;

[0028] Figure 4 A schematic diagram showing the structure of a battery parameter detection device provided in an embodiment of the present application is shown;

[0029] Figure 5 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown.

[0030] Figure 4 and Figure 5 The corresponding relationship between the reference numerals and the names of the drawings is as follows:

[0031] 400 Battery parameter detection device; 410 Acquisition module; 420 Determination module; 500 Electronic device; 510 Processor; 520 Memory; 530 Bus. DETAILED DESCRIPTION

[0032] 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.

[0033] 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 the existence of 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 include 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.

[0034] First, the application scenarios to which this application is applicable are introduced. The embodiments provided in this application are applicable to any application scenario that requires the use of a battery pack for power supply, including but not limited to new energy vehicles.

[0035] Currently, the method currently available on the market for detecting the parameters of battery cells in a battery pack generally uses an optocoupler signal receiver to detect the parameters of the battery cells in real time. However, since the optocoupler signal receiver is usually wrapped on the outside of the battery pack and is relatively large in size, the optocoupler signal receiver cannot accurately detect the parameters of all battery cells in the battery pack and is not suitable for application scenarios that have volume requirements, resulting in poor adaptability.

[0036] Because the battery pack in the existing technology is subject to gradient effects and local effects, it cannot fully meet the effective early warning needs, which leads to the risk of battery pack loss of control and difficulty in battery pack management. Traditional sensors (such as thermocouples) can often only be arranged at a small number of specific positions in the battery pack when collecting parameters, and each time a test point is arranged, a test connection line needs to be led out. In addition, the traditional sensor sampling type is single and the accuracy is low. The signal analysis of traditional sensors is difficult, and a dedicated analysis chip may be required for signal analysis. Therefore, due to limitations such as volume and space, the application of technology may not be realized on the vehicle side.

[0037] Based on this, the embodiments of the present application provide a method, system, device and electronic device for detecting battery parameters. The embodiments provided by the present application solve the technical problems of poor accuracy and poor adaptability of the detected battery parameters. The embodiments provided by the present application not only improve the accuracy of battery parameter detection, but also improve the adaptability of detection for application scenarios.

[0038] See also Figure 1 , Figure 1 This is one of the flow charts of a method for detecting battery parameters provided in an embodiment of the present application, such as Figure 1 As shown in , the battery parameter detection method provided in the embodiment of the present application includes the following steps:

[0039] S101. Obtain battery parameter data between current collectors and electrodes in each battery cell in a target battery pack.

[0040] In this step, the embodiment provided in the present application needs to obtain the battery parameter data between the current collector and the electrode in the battery cell when inspecting the target battery pack to be inspected, because the current collector and the electrode are two important components of the back of the battery cell. Therefore, obtaining the battery parameter data between the current collector and the electrode inside the battery cell will be more accurate than directly obtaining the battery parameters inside the battery pack.

[0041] It can be understood that, assuming that the embodiment provided in the present application uses optical fiber equipment to obtain battery parameter data between the current collector and the electrode in each battery cell in the target battery pack, since optical fiber has good corrosion resistance, tensile resistance, high dielectric properties and high temperature resistance, etc., therefore, optical fiber is applied to the physical and chemical environment inside the battery. The optical fiber equipment can clearly, stably and well detect the battery parameter data of each battery cell, and can simultaneously perceive the data changes of different types of battery parameters, and this detection method will not affect the performance of each battery cell in the target battery pack.

[0042] It is assumed that the battery parameter data of each battery cell in the embodiment provided in this application includes but is not limited to parameter data such as temperature, stress and strain.

[0043] S102. Based on the battery parameter data, determine the target cloud-based digital twin battery model corresponding to the target battery pack, so that the external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model. The target cloud-based digital twin battery model is used to digitize the status of each battery cell and predict the status of the target battery based on the digitized battery parameter data.

[0044] In this step, in the embodiment provided by the present application, after obtaining the battery parameter data between the current collector and the electrode in each battery cell, the above-mentioned battery parameter data are input into the initial cloud-based digital twin battery model to generate the corresponding target cloud-based digital twin battery model. Then, by utilizing the super computing power of the cloud, the status of the target battery is detected and monitored in real time, and when the target battery fails, advance warning can be provided to extend the service life of the target battery.

[0045] The working principle of the initial cloud-based digital twin battery model mentioned above is based on the concept of digital twin, which is to create a virtual simulation of a physical asset. In this model, the battery and its status are digitized, and real-time operating data and past usage data are collected through sensors. These data are used to generate a full range of representations of battery variables, including usage patterns, environmental conditions, current performance, temperature, and charge status.

[0046] It is assumed that the cloud storage in the embodiments provided in this application is, but not limited to, storing advanced BMS algorithms.

[0047] The battery parameter detection method provided in the embodiment of the present application is compared with the prior art. The embodiment provided in the present application obtains the battery parameter data between the current collector and the electrode in each battery cell in the target battery pack, and determines the target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data, so that the external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model, thereby improving the accuracy of battery parameter detection while also improving the adaptability of detection to application scenarios.

[0048] In one embodiment, the battery parameter data between the current collector and the electrode in each battery cell of the target battery pack is obtained, specifically:

[0049] A single optical fiber device is passed through the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, wherein the distance between the single optical fiber device and each current collector is a first distance; the distance between the single optical fiber device and each electrode is a second distance, and the first distance is smaller than the second distance.

[0050] In the above, the embodiment provided by the present application is achieved by fixing a single optical fiber device between the current collector and the electrode of each battery cell of the target battery pack, and passing through each battery cell in the target battery pack in sequence (passing through the 1st battery cell to the nth battery cell of the target battery pack), and the distance between the single optical fiber device and each electrode is the second distance, and the distance between the single optical fiber device and each current collector is the first distance.

[0051] It can be understood that the single optical fiber device in the embodiment provided in the present application is farther away from the electrode (compared to the distance between the single optical fiber device and the current collector). This is because the current collector inside the battery cell is less likely to react with the current collector than the electrode inside the battery cell. Therefore, placing the single optical fiber on the side closer to the current collector (or placing the single optical fiber) will not affect the performance of the target battery pack itself, and will be more beneficial to extending the service life of the target battery pack.

[0052] Among them, see Figure 2 , Figure 2 This is a structural diagram of the connection relationship between each battery cell and a single optical fiber device in a battery parameter detection method provided in an embodiment of the present application, such as Figure 2As shown in , it is assumed that the single optical fiber in the embodiment provided by the present application can realize the sensing of all battery cells by one optical fiber. Specifically, by using a single optical fiber, all battery cells in the target battery pack are horizontally connected, so that a single optical fiber can realize simultaneous monitoring and detection of important parameters such as temperature, stress and voltage at hundreds of locations, and at the same time can accurately grasp the temperature, stress and strain status of all battery cells in the target battery pack. The embodiment provided by the present application can also process a single optical fiber into a Bragg grating for signal collection, transmission and sending, etc.

[0053] In the above, the single optical fiber in the embodiment provided in this application achieves accurate monitoring and detection of electrode / interface signals inside the target battery pack.

[0054] In one embodiment, the electrodes include a positive electrode and a negative electrode. A single optical fiber device is passed through the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, specifically:

[0055] A single optical fiber device is passed through between the current collector and the positive electrode of each battery cell in the target battery pack to obtain first battery parameter data between the current collector and the electrode in each battery cell, or a single optical fiber device is passed through between the current collector and the negative electrode of each battery cell in the target battery pack to obtain second battery parameter data between the current collector and the electrode in each battery cell; wherein the accuracy of the first battery parameter data is greater than the accuracy of the second battery parameter data.

[0056] In the above, it is assumed that the embodiment provided in this application can insert a single optical fiber device between the current collector and the positive electrode of each battery cell, and can also be inserted between the current collector and the negative electrode of each battery cell, and the accuracy of insertion into the positive electrode is greater than the accuracy of insertion into the negative electrode.

[0057] It can be understood that the embodiments provided in the present application can accurately monitor the internal electrode / interface signals of the target battery pack, such as temperature, stress, and strain, and monitor the internal changes of the target battery pack after inserting a single optical fiber device between the current collector and the positive electrode of each battery cell, or inserting a single optical fiber device between the current collector and the negative electrode of each battery cell.

[0058] In one embodiment, the battery parameter data is optical fiber battery parameter data, and step S102 includes the following sub-steps:

[0059] Sub-step 1021: Convert the optical signal into a CAN signal according to the optical fiber battery parameter data and a preset signal converter, and determine the CAN signal battery parameter data.

[0060] In this step, the optical fiber battery parameter data is optical signal data. When we display it on a device or platform, we need to convert the optical signal. The embodiment provided in this application specifically converts the above optical signal into a CAN signal to generate corresponding CAN signal battery parameter data.

[0061] Sub-step 1022: Determine the target cloud-based digital twin battery model corresponding to the target battery pack based on the CAN signal battery parameter data and the preset communication terminal device.

[0062] In this step, after converting the optical signal battery parameter data into CAN signal battery parameter data, the embodiment provided by the present application needs to send the CAN signal battery parameter data to the cloud battery management system through a preset communication terminal device for detection, testing and management.

[0063] It can be understood that the preset communication terminal equipment (Telematics Box, Tbox) is a remote communication terminal equipment designed specifically for automobiles. It integrates vehicle body network and wireless communication technology to provide Telematics services for automobiles.

[0064] The battery parameter detection method provided in the embodiment of the present application, compared with the prior art, obtains the battery parameter data between the current collector and the electrode in each battery cell in the target battery pack, and determines the target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data, so that the external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model. Without affecting the performance of the battery cell itself, the accuracy of battery parameter detection is improved, the service life of the target battery is extended, and the adaptability of detection to application scenarios is improved. In addition, a single optical fiber device can realize more diverse collection of battery parameter data, which makes the cost of collecting battery parameter data in the target battery lower.

[0065] The battery parameter detection method provided in this application uses a single optical fiber device and can therefore be applied to multiple application scenarios including new energy electric vehicles. In addition, the single optical fiber device in this application details the method of arranging a single optical fiber. Therefore, it is expected to be widely used in power batteries, making the monitoring of power battery status more accurate.

[0066] See also Figure 3 , Figure 3 A schematic diagram of the structure of a battery parameter detection system provided in an embodiment of the present application is shown as follows: Figure 3As shown in the figure, the battery parameter detection system includes each battery cell in the target battery pack, a single optical fiber device, a signal converter and a remote communication terminal device. The single optical fiber device runs through the current collector and the electrode of each battery cell, and the single optical fiber device is communicatively connected to the signal converter, and the signal converter is communicatively connected to the remote communication terminal device.

[0067] In the above, the current collector is an important part of the target battery pack. It is one of the main components of the target battery pack and has the function of collecting current. Simply put, it is the bridge connecting the electrodes and the circuit in the target battery pack. During the charging and discharging process of the target battery pack, the current needs to be transmitted through the current collector. The current collector is usually made of metal materials with good conductivity, such as copper and aluminum. Its main function is to improve the conductivity of the target battery pack and ensure that the current is smoothly transmitted inside the target battery pack, thereby realizing the effective conversion and utilization of electrical energy; in addition, the current collector can also play a role in supporting and protecting the electrode material in the target battery pack, making the electrode structure more stable and reliable; therefore, the performance of the current collector has a vital impact on the overall performance of the target battery pack.

[0068] In the above, electrode refers to the material that plays the role of electron transfer or ion transfer in the electrochemical system. The quality and performance of the electrode directly affect the efficiency of the electrochemical reaction. Different electrodes are selected according to different electrochemical reactions. For example, in a lead-acid battery, PbO2 is used as the positive electrode and Pb is used as the negative electrode. The electrode can be metal or non-metal, as long as it can exchange electrons with the electrolyte solution.

[0069] Here, a single fiber optic device is connected to the signal converter via the CAN bus.

[0070] Among them, a single optical fiber device passes through the current collector and electrode of each battery cell and contacts each current collector.

[0071] See also Figure 4 , Figure 4 A schematic diagram of the structure of a battery parameter detection device provided in an embodiment of the present application is shown as follows: Figure 4 As shown in , the battery parameter detection device includes:

[0072] The acquisition module 410 is used to obtain battery parameter data between the current collector and the electrode in each battery cell in the target battery pack.

[0073] Determination module 420 is used to determine the target cloud digital twin battery model corresponding to the target battery pack based on the battery parameter data, so that the external battery management system can perform fault monitoring on the target battery through the target cloud digital twin battery model, wherein the target cloud digital twin battery model is used to digitize the status of each battery cell and predict the status of the target battery based on the digitized battery parameter data.

[0074] In one embodiment, the acquisition module 410 is specifically configured to:

[0075] A single optical fiber device is passed through the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, wherein the distance between the single optical fiber device and each current collector is a first distance; the distance between the single optical fiber device and each electrode is a second distance, and the first distance is smaller than the second distance.

[0076] In one embodiment, the electrodes include a positive electrode and a negative electrode. A single optical fiber device is passed through the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, including:

[0077] A single optical fiber device is passed through between the current collector and the positive electrode of each battery cell in the target battery pack to obtain first battery parameter data between the current collector and the electrode in each battery cell, or a single optical fiber device is passed through between the current collector and the negative electrode of each battery cell in the target battery pack to obtain second battery parameter data between the current collector and the electrode in each battery cell; wherein the accuracy of the first battery parameter data is greater than the accuracy of the second battery parameter data.

[0078] In one embodiment, the battery parameter data is optical fiber battery parameter data, and the determination module 420 is specifically configured to:

[0079] According to the optical fiber battery parameter data and the preset signal converter, the optical signal is converted into a CAN signal to determine the CAN signal battery parameter data.

[0080] Based on the CAN signal battery parameter data and the preset communication terminal equipment, the target cloud-based digital twin battery model corresponding to the target battery pack is determined.

[0081] The battery parameter detection device 400 provided in the embodiment of the present application, compared with the prior art, obtains battery parameter data between the current collector and the electrode in each battery cell in the target battery pack, and determines the target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data, so that the external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model. While not affecting the performance of the battery cell itself, the accuracy of battery parameter detection is improved, the service life of the target battery is extended, and the adaptability of detection to application scenarios is improved. In addition, a single optical fiber device can realize more diverse collection of battery parameter data, which makes the cost of collecting battery parameter data in the target battery lower.

[0082] The battery parameter detection device 400 provided in this application uses a single optical fiber device and can therefore be applied to multiple application scenarios including new energy electric vehicles. The single optical fiber device in this application also details the method of arranging a single optical fiber. Therefore, it is expected to be widely used in power batteries, making the monitoring of power battery status more accurate.

[0083] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, such as Figure 5 As shown in FIG, the electronic device 500 includes a processor 510, a memory 520 and a bus 530.

[0084] The memory 520 stores machine-readable instructions executable by the processor 510. When the electronic device 500 is running, the processor 510 communicates with the memory 520 via the bus 530. When the machine-readable instructions are executed by the processor 510, the above-mentioned Figures 1 to 2 The specific implementation of the steps of the battery parameter detection method in the method embodiment shown can be found in the method embodiment, and will not be repeated here.

[0085] 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 Figures 1 to 2 The specific implementation of the steps of the battery parameter detection method in the method embodiment shown can be found in the method embodiment, and will not be repeated here.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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 A step that specifies a function in one or more boxes.

[0092] An embodiment of the present application further 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 LDPC decoding method of the solid-state drive controller.

[0093] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a 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 instruction 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 instruction 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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 detecting battery parameters, characterized in that: The battery parameter detection method includes: Obtain battery parameter data between the current collector and the electrode in each cell of the target battery pack; Based on the battery parameter data, the target cloud-based digital twin battery model corresponding to the target battery pack is determined so that an external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model. The target cloud-based digital twin battery model is used to digitize the status of each battery cell and predict the status of the target battery based on the digitized battery parameter data.

2. The method for detecting battery parameters according to claim 1, wherein: The obtaining of battery parameter data between the current collector and the electrode in each battery cell of the target battery pack includes: A single optical fiber device is passed through between the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, wherein the distance between the single optical fiber device and each current collector is a first distance; the distance between the single optical fiber device and each electrode is a second distance, and the first distance is smaller than the second distance.

3. The method for detecting battery parameters according to claim 2, wherein: The electrodes include a positive electrode and a negative electrode, and the single optical fiber device is passed through the current collector and the electrode of each battery cell in the target battery pack to obtain battery parameter data between the current collector and the electrode in each battery cell, including: A single optical fiber device is passed through between the current collector and the positive electrode of each battery cell in the target battery pack to obtain the first battery parameter data between the current collector and the electrode in each battery cell, or A single optical fiber device is passed through between the current collector and the negative electrode of each battery cell in the target battery pack to obtain second battery parameter data between the current collector and the electrode in each battery cell; wherein the accuracy of the first battery parameter data is greater than the accuracy of the second battery parameter data.

4. The method for detecting battery parameters according to claim 1, wherein: The battery parameter data is optical fiber battery parameter data, and determining a target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data includes: According to the optical fiber battery parameter data and the preset signal converter, the optical signal is converted into a CAN signal, and the CAN signal battery parameter data is determined; Based on the CAN signal battery parameter data and the preset communication terminal device, the target cloud digital twin battery model corresponding to the target battery pack is determined.

5. A battery parameter detection system, using the battery parameter detection method according to any one of claims 1 to 4, characterized in that: The battery parameter detection system includes each battery cell in the target battery pack, a single optical fiber device, a signal converter and a remote communication terminal device. The single optical fiber device runs through the current collector and the electrode of each battery cell, and the single optical fiber device is communicatively connected to the signal converter, and the signal converter is communicatively connected to the remote communication terminal device.

6. The battery parameter detection system according to claim 5, characterized in that: The single optical fiber device is communicatively connected to the signal converter via a CAN bus.

7. The battery parameter detection system according to claim 5, characterized in that: The single optical fiber device passes through between the current collector and the electrode of each battery core and contacts each current collector.

8. A battery parameter detection device, characterized in that: The battery parameter detection device includes: An acquisition module is used to obtain battery parameter data between the current collector and the electrode in each battery cell of the target battery pack; A determination module is used to determine the target cloud-based digital twin battery model corresponding to the target battery pack based on the battery parameter data, so that an external battery management system can perform fault monitoring on the target battery through the target cloud-based digital twin battery model, wherein the target cloud-based digital twin battery model is used to digitize the status of each of the battery cells and predict the status of the target battery based on the digitized battery parameter data.

9. An electronic device, characterized in that: include: A processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device 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 battery parameter detection method as described in any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the battery parameter detection method according to any one of claims 1 to 4 are executed.

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