Battery compartment structure, wireless battery management method and device and electronic equipment

Abstract

The embodiment of the invention provides a battery anomaly detection method and device, electronic equipment and a storage medium, and relates to the technical field of computers. The method comprises the following steps: sending battery cell data of each battery cell in a battery module to a first storage node for storage in a wireless communication mode; determining abnormal battery cell data from the battery cell data stored in the first storage node, and sending the abnormal battery cell data to a second storage node for storage in a wireless communication mode; and analyzing the abnormal cell data stored in the second storage node, and determining the abnormality reason of the cell with the abnormal cell data in the cell stack. Battery data are transmitted and stored among the structures in a wireless communication mode, so that the structures are connected without a wired harness when the battery is designed, the harness constraint caused when the battery structure is relatively complex is avoided, the harness cost can be reduced, more battery space occupied by the harness can be vacated, and the battery structure is more compact. And therefore, the discharge capability of the battery per se is improved.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and more specifically, to a battery compartment structure, a wireless battery management method, device, electronic device, and storage medium. Background Art

[0002] The battery management system in the energy storage system is the intelligent steward of the energy storage battery, responsible for the safe, efficient and long-life operation of the battery. With the rapid development of the energy storage industry at home and abroad, the battery management system, as the core component of the energy storage system, undertakes the key tasks of ensuring battery safety, extending battery life, optimizing performance and improving the efficiency of the entire cabin.

[0003] However, in traditional energy storage business battery compartments, a large number of wiring harnesses are required to connect battery packs, battery packs and battery clusters, and battery clusters managed by battery management systems at all levels. Auxiliary control equipment such as liquid coolers, air conditioners, and fire hosts, as well as communication between energy storage inverters and battery management systems, often use wired connections, which increases the complexity of installation and maintenance, and requires additional labor costs for troubleshooting. Cable wear and poor connections may also lead to communication failures and safety hazards.

[0004] Traditional battery management systems that use wired connections have limitations in terms of cost, safety, and data transmission efficiency, making it difficult to meet the industry's growing needs. Summary of the invention

[0005] The purpose of this application is to solve at least one of the above technical defects. The technical solutions provided by the embodiments of this application are as follows: In a first aspect, an embodiment of the present application provides a battery abnormality detection method, wherein the battery includes at least one battery stack, each battery stack includes multiple battery clusters, each battery cluster includes at least one battery module, and each battery module includes multiple battery cells. The method includes: For each battery module, the cell data of each cell in the battery module is sent to the first storage node of the battery cluster for storage by wireless communication; For each battery cluster, the first storage node determines abnormal battery cell data from the battery cell data stored in the first storage node, and sends the abnormal battery cell data stored in the first storage node to the second storage node of the battery stack for storage via wireless communication; For each second storage node of the battery stack, each abnormal cell data stored in the second storage node is analyzed to determine the abnormal cause of the cell with abnormal cell data in the battery stack.

[0006] In a second aspect, an embodiment of the present application provides a battery abnormality detection device, comprising: A first storage module is used for sending the cell data of each cell in the battery module to the first storage node of the battery cluster for storage via wireless communication for each battery module; A second storage module is used for determining abnormal cell data from the cell data stored in the first storage node for each battery cluster, and sending the abnormal cell data stored in the first storage node to the second storage node of the battery stack for storage via wireless communication; The abnormality analysis module is used to analyze the abnormal cell data stored in the second storage node of each battery stack to determine the abnormal cause of the cell with abnormal cell data in the battery stack.

[0007] In a third aspect, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory; The processor executes the computer program to implement the method provided in the embodiment of the first aspect or any optional embodiment of the first aspect.

[0008] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method provided in the embodiment of the first aspect or any optional embodiment of the first aspect is implemented.

[0009] The beneficial effects of the technical solution provided by the embodiment of the present application are: The solution provided in the present application uses wireless communication to transmit and store battery data between various structures in the battery, so that when designing the battery, there is no need to use traditional wired harnesses to connect the various structures, avoiding the harness constraints that may be caused when the battery structure is more complex. At the same time, it can also reduce the harness cost and free up more battery space occupied by the harness to place more battery cells, thereby improving the discharge capacity of the battery itself, and effectively improving the battery's energy storage density and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in describing the embodiments of the present application are briefly introduced below.

[0011] Figure 1 A flowchart of a battery abnormality detection method provided in an embodiment of the present application; Figure 2 This is a schematic diagram of the architecture of a master node in a battery compartment architecture in an example of an embodiment of the present application; Figure 3 This is a schematic diagram of the overall structure of a battery compartment in an example of an embodiment of the present application; Figure 4A schematic diagram of a specific connection structure of each intermediate node in an example of an embodiment of the present application; Figure 5 A schematic diagram of the specific structure of each terminal node in an example of an embodiment of the present application; Figure 6 A structural block diagram of a battery abnormality detection device provided in an embodiment of the present application; Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0012] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0013] It will be understood by those skilled in the art that, unless specifically stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the terms "including" and "comprising" used in the embodiments of the present application refer to that the corresponding features can be implemented as the presented features, information, data, steps, operations, elements and / or components, but do not exclude the implementation as other features, information, data, steps, operations, elements, components and / or combinations thereof supported by the technical field. It should be understood that when we say that an element is "connected" or "coupled" to another element, the one element may be directly connected or coupled to the other element, or it may refer to that the one element and the other element establish a connection relationship through an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein indicates at least one of the items defined by the term, for example, "A and / or B" may be implemented as "A", or as "B", or as "A and B".

[0014] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0015] The following describes several exemplary embodiments to illustrate the technical solutions of the embodiments of the present application and the technical effects produced by the technical solutions of the present application. It should be noted that the following embodiments can refer to, draw on or combine with each other, and the same terms, similar features and similar implementation steps in different embodiments will not be described repeatedly.

[0016] Figure 1A flowchart of a battery abnormality detection method is provided for an embodiment of the present application. The execution subject of the method may be a battery energy storage system (BMS, Battery Management System), such as Figure 1 As shown, the method may include: Step S101 : for each battery module, the cell data of each cell in the battery module is sent to a first storage node of the battery cluster for storage by wireless communication.

[0017] The "battery" in the embodiments of the present application is not only a daily battery, but also a large power supply device such as a "battery compartment". The following will take the "battery compartment" as an example to introduce the solution provided by the present application. The battery cell is the most basic part of the battery structure, which can be the storage part of the battery, used to directly store electrical energy, and can also be used to release electrical energy. The battery structure can include battery cells, battery modules, battery clusters, battery stacks, and the like. A battery module can be a battery cell set composed of a plurality of battery cells, which is used to group each battery cell. A battery cluster can be a battery module set composed of a plurality of battery modules, which can be used to determine the data and location information of an abnormal battery cell. The battery cell data can contain multiple dimensions, and the multiple dimensions can respectively characterize the state of the battery cell in different dimensions, such as voltage, current, temperature, etc., which is not limited in the embodiments of the present application. The first storage node is on the battery cluster, and can be used to store and preliminarily analyze the battery cell data uploaded by the battery module.

[0018] Specifically, when detecting battery abnormalities, the embodiments of the present application mainly analyze the battery cells at the most basic level of the battery structure. Specifically, the battery cell data that can characterize the battery cell status can be collected in real time. The battery cell data of all these battery cells can then be summarized by a preset summary node on the battery module, and then uploaded to the first storage node of the battery cluster for storage via wireless communication.

[0019] It should be noted that in the embodiments of the present application, a wireless communication module is preset on the battery structure that can use wireless communication. When wireless communication is performed, the wireless communication protocol used is DDA (Dynamic crypto Densecover Ant colony) or other wireless communication protocols, such as Bluetooth, WiFi (Wireless Fidelity) or ZigBee, etc. Similarly, its communication frequency band can also be the commonly used 4G (fourth generation mobile communication system) / 5G (fifth generation mobile communication system) or other frequency bands. The embodiments of the present application are not limited here and can be determined according to the specific application environment.

[0020] During wireless communication, different levels of battery structures can use different frequencies for communication. The advantages of this design are: 1. Different frequencies can reduce mutual interference between different battery structures and improve communication reliability. When multiple battery structures work at the same time, using different frequencies can avoid signal conflicts.

[0021] 2. By selecting a frequency band suitable for a specific application for each battery structure, data transmission speed and bandwidth can be optimized. For example, some battery structures require a larger frequency to be more suitable for transmitting large amounts of data, while some battery structures require a lower frequency for low-power, low-rate communications.

[0022] 3. Adapt to different environments: Signals of different frequencies have different propagation characteristics. Low-frequency signals are more capable of penetrating obstacles, while high-frequency signals are suitable for short-distance, high-speed communications. Choosing the right frequency according to the actual environment can improve the overall performance of the battery.

[0023] 4. Support multiple communication protocols: Different frequencies can support different wireless communication protocols, making the battery compatible and connectable with a variety of devices (such as sensors, controllers, etc.).

[0024] 5. Enhanced security: Technologies such as frequency hopping can enhance the security of communications and reduce the risk of eavesdropping or interference.

[0025] 6. Flexibility and scalability: The setting of different frequencies makes the system more flexible when expanding, and the communication plan can be adjusted according to future needs.

[0026] Step S102 : for each battery cluster, the first storage node determines abnormal battery cell data from the battery cell data stored in the first storage node, and sends the abnormal battery cell data stored in the first storage node to the second storage node of the battery stack for storage via wireless communication.

[0027] In an embodiment of the present application, the battery stack may be a battery cluster set consisting of multiple battery clusters. The second storage node is on the battery stack and can be used to store abnormal cell data uploaded by the battery cluster and specifically analyze the abnormal reasons for the abnormal cell data. Abnormal cell data refers to cell data that is not within the normal range, such as cell data with too high or too low voltage, cell data with too high temperature, and too large a voltage peak difference within a certain period of time, etc.

[0028] Specifically, in an embodiment of the present application, the first storage node on the battery cluster first performs a preliminary analysis on all the uploaded and stored battery cell data, analyzes the abnormal battery cell data, and sends the abnormal battery cell data and the corresponding battery cells to the second storage node of the battery cluster for storage via the wireless communication module on the battery cluster in a wireless communication manner.

[0029] Step S103 : for each second storage node of the battery stack, analyzing each abnormal cell data stored in the second storage node to determine the abnormal cause of the cell having the abnormal cell data in the battery stack.

[0030] Specifically, after the second storage node receives each abnormal cell data, each abnormal cell data can be further specifically analyzed to obtain the specific abnormal cause of the abnormal cell data. The specific analysis method can be to input the abnormal cell data into a preset function and then further analyze the function value obtained by calculation, or to input the abnormal cell data into a trained preset model to directly output the corresponding abnormal cause, etc., which is not limited in the embodiment of the present application.

[0031] The solution provided in the present application uses wireless communication to transmit and store battery data between various structures in the battery, so that when designing the battery, there is no need to use traditional wired harnesses to connect the various structures, avoiding the harness constraints that may be caused when the battery structure is more complex. At the same time, it can also reduce the harness cost and free up more battery space occupied by the harness to place more battery cells, thereby improving the discharge capacity of the battery itself, and effectively improving the battery's energy storage density and economic benefits.

[0032] Based on the above embodiments, as an optional embodiment, determining abnormal cell data from each cell data specifically includes: Acquire status data of the battery cluster; wherein the status data is used to characterize the distribution of cell data of each cell included in the battery cluster; Cell data out of the distribution state is determined as abnormal cell data from among the cell data.

[0033] In an embodiment of the present application, the status data of the battery cluster may be the discrete distribution of the cell data of all the cells in all the battery modules contained in the battery cluster. The status data may be obtained by obtaining the status data of the high-voltage box in the battery cluster in advance. The high-voltage box may be a part of the battery cluster (i.e., the secondary BMS in the figure, which may also be referred to as the secondary BMS because the battery cluster is at the second level in the battery structure). In an embodiment of the present application, the high-voltage box is connected to each battery pack in the battery cluster in the form of a daisy chain. The battery pack may also be one of the battery structures, each battery pack including multiple battery modules, and multiple battery packs may form a battery cluster. The function of the high-voltage box may be to protect the safety of each battery pack in the entire battery cluster to prevent the battery cell from generating excessive voltage. Specifically, when a fault occurs, the relay and the circuit breaker may be quickly disconnected during self-test or when a fault power-off command is received from the second storage node of the battery stack to cut off the high-voltage path.

[0034] Specifically, the battery cluster status data in the solution of the present application can be regarded as a data distribution, and the battery cell data in the denser range of the data distribution can be regarded as normal battery cell data, while the battery cell data in the sparser range of the data can be regarded as outlier data, and these data can be determined to be abnormal battery cell data.

[0035] Based on the above embodiments, as an optional embodiment, the abnormal cause includes an abnormal indicator; Determine the abnormal cause of the battery cell with abnormal battery cell data in the battery stack, and then specifically include: Determine the target exception processing device corresponding to the exception indicator according to the preset correspondence between each exception indicator and the exception processing device; A control instruction of an abnormality handling device is generated based on the abnormal cell data, and the control instruction is sent to a target abnormality handling device through wireless communication so that the abnormality handling device executes the control instruction.

[0036] In an embodiment of the present application, abnormal indicators can be obtained by analyzing abnormal battery cell data, such as voltage too low, temperature too low, SOC (State of Charge) too low, temperature too high, etc. The abnormality handling device can be an external device used to solve the abnormal cause of abnormal battery cell data, such as air conditioners, liquid coolers, fire fighting equipment, etc., which are not limited in the present application. The control instruction can be an instruction that needs to be executed by the target abnormality handling device. For example, when the abnormal cause is that the battery cell temperature is too high, the target abnormality handling device can be an air conditioner or a liquid cooler compressor, and the corresponding control instruction can be to perform a refrigeration action to cool down, etc.

[0037] Specifically, after detecting the abnormal cause that causes abnormal cell data in the battery cell, corresponding solution measures need to be taken for the abnormal cause. In the embodiment of the present application, the corresponding target abnormal processing device can be selected according to the abnormal indicators contained in the abnormal cause and the preset corresponding relationship. For example, for the abnormal cause in which the abnormal indicator is temperature and the temperature is too high or too low, air conditioners, liquid coolers and other equipment can be used to cool or heat the battery cell to solve the abnormal cause; for the abnormal cause in which the abnormal indicator is current and the current is too high, a variable resistor can be used to increase the resistance to reduce the battery current to solve the abnormal cause; for the abnormal cause in which the abnormal indicator is SOC too low or SOC too high, the battery cell protection can be completed by reducing the charging and discharging power.

[0038] When the target abnormality handling device is processing, in order to prevent the target abnormality handling device from being "overused" and thus having a counterproductive effect (for example, a long cooling time may cause the battery cell temperature to be too low), it is also necessary to generate corresponding control instructions based on the actual abnormal battery cell data, and then send the control instructions to the target abnormality handling device via wireless communication, and the target abnormality handling device can directly execute the received control instructions. For example, when the abnormal cause indicates that the temperature is too high and the abnormal battery cell data is that the temperature exceeds 30 degrees, the generated control instruction can be "release cold air to cool down, so that the highest temperature in each battery cell is less than 27 degrees and stop cooling."

[0039] Based on the above embodiments, as an optional embodiment, determining the abnormal cause of the battery cell having abnormal battery cell data in the battery stack further specifically includes: If the target exception handling device corresponding to the exception indicator is not determined according to the preset correspondence between each indicator and the exception handling device, then The abnormal cause and abnormal cell data are sent to the terminal of the target object through wireless communication for display, so that the target object can determine the abnormality handling strategy based on the abnormal cause and abnormal cell data.

[0040] In an embodiment of the present application, the target object may be the operation and maintenance personnel responsible for maintaining the battery compartment, and the terminal of the target object may be a small mobile terminal such as the operation and maintenance personnel's mobile phone, or a large terminal such as their computer, which is not limited in the embodiment of the present application.

[0041] Specifically, in some application scenarios, the battery stack may not be able to accurately determine the corresponding target abnormality handling device based on the abnormality indicators. At this time, the battery energy storage system cannot solve the abnormal cause by itself. Then the analyzed abnormal cause and abnormal battery cell data can be sent to the terminal of the operation and maintenance personnel in the form of prompt information through wireless communication. After the operation and maintenance personnel receive the prompt information through the terminal, they can analyze it again according to the abnormal information contained in the prompt information and determine the abnormality handling strategy. Compared with the traditional method, the solution provided by the embodiment of the present application does not require the operation and maintenance personnel to stay around the battery compartment all the time. Prompt information about battery compartment abnormalities can be received remotely and analyzed to provide abnormality handling strategies.

[0042] Based on the above embodiments, as an optional embodiment, the total number of battery cells contained in each battery cluster is the same; and the battery clusters are connected in parallel.

[0043] Specifically, since the discharge capacity of each battery cluster is determined by the total number of cells contained in the battery cluster, and in actual application scenarios, if a battery cluster contains a small total number of cells, the discharge capacity of the battery cluster will be weak, and then there may be a "barrel effect", that is, when multiple battery clusters need to discharge at the same time, a battery cluster with a weaker discharge capacity will cause the overall discharge capacity to be low. In order to prevent this situation, when designing the embodiments of the present application, the principle of maintaining the same total number of cells contained in each battery cluster is maintained, so that the discharge capacity of each battery cluster is the same, so that the discharge capacity of a battery cluster will not affect the discharge capacity of the entire battery compartment due to its weak discharge capacity.

[0044] In actual application scenarios, when the device to be powered requires less power, only part of the battery cluster can be used for power supply to save more resources. In order to meet the above requirements, the battery clusters in the present application scheme can be connected in parallel, so that the discharge of some battery clusters can also ensure the smoothness of the power supply circuit.

[0045] Based on the above embodiments, as an optional embodiment, the battery cell data includes a voltage value of the battery cell; The method further specifically includes: The battery cells in each battery cluster are discharged, and the voltage values ​​of the battery cells are collected in real time. When it is detected that the minimum value among the voltage values ​​of the battery cells is less than the battery cell voltage threshold, the discharge operation of the battery cells is stopped.

[0046] Specifically, when an external device needs to be powered by the battery compartment, a power supply request can be initiated to the energy storage converter corresponding to the battery compartment through wireless communication. The reason for using the energy storage converter is that the current directly supplied by the battery compartment is in the form of direct current, which needs to be converted into alternating current by the energy storage converter before it can be used. The energy storage converter initiates a power supply request to each battery stack in the battery compartment through wireless communication. The power supply request can include the actual power required for this discharge. In response to the power supply request, each battery stack selects each battery cluster that needs to be discharged, and causes each battery cell in each selected battery cluster to perform a discharge operation. When each battery cell is discharged, the voltage value of each battery cell being discharged is also monitored in real time and sent to the energy storage converter synchronously. When each battery stack detects that the minimum value of the real-time voltage of each battery cell is less than the preset battery cell voltage threshold, it can send an instruction to stop the discharge operation to the energy storage converter through wireless communication. After receiving the instruction, the energy storage converter stops the discharge action and switches to standby state, waiting for the next charge and discharge request. The advantage of this design is that it can prevent the battery cells from over-discharging and save power in the battery compartment.

[0047] Based on the above embodiments, as an optional embodiment, each battery cluster further includes a plurality of battery packs, and each battery pack includes a plurality of battery modules; The method further specifically includes: For each battery cluster, when the number of battery packs contained in the battery cluster exceeds a preset threshold, the difference between the number of battery packs and the preset threshold is obtained, and battery packs with the difference number are selected from each battery pack as battery packs to be removed; For each battery cluster, the battery modules in each battery pack to be removed in the battery cluster are distributed to each battery pack that has not been selected, and each battery pack to be removed is removed.

[0048] Specifically, in the embodiment of the present application, in theory, the number of cells that can be contained in each battery pack is infinite. Therefore, in the application scenario where there is a certain limit on the number of battery packs, some battery packs can be used as battery packs to be removed, and the battery modules in these battery packs to be removed can be allocated to other unselected battery packs, and then each battery pack to be removed can be removed after the allocation is completed. Since the number of battery packs is reduced, the number of wireless communication modules required is reduced, so that the network load of the battery cluster can greatly reduce the cost of wireless communication and improve the stability of communication quality.

[0049] Combine the following Figure 2-Figure 5 , the battery compartment architecture provided by this application is introduced, such as Figure 2 As shown, Figure 2The architecture of one of the main nodes in the battery compartment architecture provided in the embodiment of the present application (i.e., corresponding to the battery stack described in the previous embodiment, or other battery structures, which are not limited in the embodiment of the present application) is Figure 2 In the embodiment, each node and external device is provided with a wireless communication module (not shown in the figure), and data is transmitted between each node or between the nodes and the external device by wireless communication through the wireless communication module. The master node can be directly connected to the external device for communication, or it can be connected to the intermediate nodes it contains (i.e., the battery cluster mentioned above, or other battery structures, which are not limited in the embodiments of the present application), and each intermediate node contains multiple terminal nodes. The terminal node of the example of the present application can be the battery pack mentioned above, or it can be a node or other battery structure contained in the battery pack, which is not limited in the embodiments of the present application. The terminal node contains multiple battery modules (not shown in the figure), and the terminal node can be directly connected to the intermediate node for communication.

[0050] Figure 3 The overall structure diagram of the battery compartment provided in the embodiment of the present application is as follows: Figure 3 As shown, each intermediate node is connected in parallel, and the terminal node is connected in series (the circuit connection is still wired, which is not marked in the figure). The dotted line in the figure indicates that each node directly uses wireless communication to transmit data. The main node can display the data uploaded by each intermediate node on the preset display of the battery compartment through wireless communication; when abnormal battery cell data appears, the corresponding control command is issued to the auxiliary control equipment such as air conditioner, liquid cooler, fire protection, etc. When the PCS (Power Conversion System, i.e., energy storage inverter) needs to be powered, it can also initiate a power supply request to the master node through wireless communication; when the master node cannot determine the target abnormality handling device corresponding to the abnormal cause, it can also first send the abnormal cause and abnormal battery cell data to the EMS (Energy Management System, energy management platform) by wireless communication, and then send the abnormal cause and abnormal battery cell data to the target object terminal through the EMS, so that the target object can intervene in the processing.

[0051] Figure 4 A schematic diagram of a specific connection structure of each intermediate node provided in the embodiment of the present application is shown in FIG. Figure 4As shown in the figure, each intermediate node includes multiple end nodes and a high-voltage box to form a battery cluster. The power generated by the cells between the end nodes is transmitted in daisy chain mode (i.e., the solid line connection part in the figure) and connected in series to the positive and negative terminals of the high-voltage box respectively, and connected to the total positive terminal and the total negative terminal of the junction cabinet through the relay and circuit breaker inside the high-voltage box. The communication between the end node and the intermediate node adopts wireless communication mode (i.e., the dotted line connection part in the figure). Compared with the traditional CAN (Controller Area Network) communication, it can save a lot of wiring harness costs, and the number of end nodes can be infinitely expanded on the basis of meeting the communication rate.

[0052] Figure 5 The specific structural diagram of each terminal node provided in the embodiment of the present application is as follows: Figure 5 As shown, the terminal node may include multiple slave BMSs (i.e., battery packs, only one battery pack is shown in the figure), and each slave BMS is preset with an infinite communication module for wireless communication; each slave BMS may include multiple battery modules (only one battery module is marked in the figure), and each battery module includes multiple battery cells, and the battery cells can be connected together in series and parallel (as shown in the figure, and can be infinitely extended to both sides or up and down).

[0053] Figure 6 A structural block diagram of a battery abnormality detection device provided in an embodiment of the present application, such as Figure 6 As shown, the battery abnormality detection device 600 may include: a first storage module 601, a second storage module 602 and an abnormality analysis module 603, wherein: The first storage module 601 is used for sending the cell data of each cell in each battery module to the first storage node of the battery cluster for storage through wireless communication; The second storage module 602 is used for determining abnormal cell data from the cell data stored in the first storage node for each battery cluster, and sending the abnormal cell data stored in the first storage node to the second storage node of the battery stack for storage via wireless communication; The abnormality analysis module 603 is used to analyze the abnormal cell data stored in the second storage node of each battery stack to determine the abnormal cause of the cell with abnormal cell data in the battery stack.

[0054] The solution provided in the present application uses wireless communication to transmit and store battery data between various structures in the battery, so that when designing the battery, there is no need to use traditional wired harnesses to connect the various structures, avoiding the harness constraints that may be caused when the battery structure is more complex. At the same time, it can also reduce the harness cost and free up more battery space occupied by the harness to place more battery cells, thereby improving the discharge capacity of the battery itself, and effectively improving the battery's energy storage density and economic benefits.

[0055] Based on the above embodiments, as an optional embodiment, the abnormality analysis module is specifically used for: Acquire status data of the battery cluster; wherein the status data is used to characterize the distribution of cell data of each cell included in the battery cluster; Cell data out of the distribution state is determined as abnormal cell data from among the cell data.

[0056] Based on the above embodiments, as an optional embodiment, the device further includes an exception handling module, which is specifically used to: Determine the target exception processing device corresponding to the exception indicator according to the preset correspondence between each exception indicator and the exception processing device; A control instruction of an abnormality handling device is generated based on the abnormal cell data, and the control instruction is sent to a target abnormality handling device through wireless communication so that the abnormality handling device executes the control instruction.

[0057] Based on the above embodiments, as an optional embodiment, the exception handling module can also be used to: If the target exception handling device corresponding to the exception indicator is not determined according to the preset correspondence between each indicator and the exception handling device, then The abnormal cause and abnormal cell data are sent to the terminal of the target object through wireless communication for display, so that the target object can determine the abnormality handling strategy based on the abnormal cause and abnormal cell data.

[0058] Based on the above embodiments, as an optional embodiment, the device further includes a discharge module, which is specifically used to: The battery cells in each battery cluster are discharged, and the voltage values ​​of the battery cells are collected in real time. When it is detected that the minimum value among the voltage values ​​of the battery cells is less than the battery cell voltage threshold, the discharge operation of the battery cells is stopped.

[0059] Based on the above embodiments, as an optional embodiment, the device further includes a cell recombination module, which is specifically used for: For each battery cluster, when the number of battery packs contained in the battery cluster exceeds a preset threshold, the difference between the number of battery packs and the preset threshold is obtained, and battery packs with the difference number are selected from each battery pack as battery packs to be removed; For each battery cluster, the battery modules in each battery pack to be removed in the battery cluster are distributed to each battery pack that has not been selected, and each battery pack to be removed is removed.

[0060] Reference below Figure 7 , which shows an electronic device suitable for implementing the embodiments of the present application (for example, Figure 1 The electronic device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), wearable devices, etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 7 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0061] The electronic device includes: a memory and a processor, the memory is used to store a program for executing the method described in each of the above method embodiments; the processor is configured to execute the program stored in the memory. The processor here can be referred to as the processing device 701 described below, and the memory can include at least one of the read-only memory (ROM) 702, the random access memory (RAM) 703, and the storage device 708 described below, as shown below: like Figure 7 As shown, the electronic device 700 may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 701, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 702 or a program loaded from a storage device 708 into a random access memory (RAM) 703. In the RAM 703, various programs and data required for the operation of the electronic device 700 are also stored. The processing device 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0062] Typically, the following devices may be connected to the I / O interface 705: an input device 706 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 707 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 708 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 709. The communication device 709 may allow the electronic device 700 to communicate with other devices wirelessly or by wire to exchange data. Although Figure 7 An electronic device having various devices is shown, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0063] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device 709, or installed from the storage device 708, or installed from the ROM 702. When the computer program is executed by the processing device 701, the above-mentioned functions defined in the method of the embodiment of the present application are executed.

[0064] It should be noted that the computer-readable storage medium mentioned above in the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer readable signal media may also be any computer readable medium other than computer readable storage media, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer readable medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0065] In some embodiments, the client and the server may communicate using any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol), and may be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), an internet (e.g., the Internet), and a peer-to-peer network (e.g., an ad hoc peer-to-peer network), as well as any currently known or future developed network.

[0066] The computer-readable medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0067] The computer-readable medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device: For each battery module, the cell data of each cell in the battery module is sent to the first storage node of the battery cluster for storage via wireless communication; for the first storage node of each battery cluster, abnormal cell data is determined from the cell data stored in the first storage node, and the abnormal cell data stored in the first storage node is sent to the second storage node of the battery stack for storage via wireless communication; for the second storage node of each battery stack, the abnormal cell data stored in the second storage node is analyzed to determine the cause of the abnormality of the cell with abnormal cell data in the battery stack.

[0068] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0069] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0070] The modules or units involved in the embodiments of the present application may be implemented by software or hardware. The name of a module or unit does not limit the unit itself in some cases. For example, the first constraint acquisition module may also be described as a "module for acquiring the first constraint".

[0071] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0072] In the context of the present application, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0073] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0074] The above descriptions are only some embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A battery abnormality detection method, characterized in that: The battery includes at least one battery stack, each battery stack includes a plurality of battery clusters, each battery cluster includes at least one battery module, each battery module includes a plurality of battery cells, and the method includes: For each battery module, the cell data of each cell in the battery module is sent to the first storage node of the battery cluster for storage by wireless communication; For each battery cluster, the first storage node determines abnormal battery cell data from the battery cell data stored in the first storage node, and sends the abnormal battery cell data stored in the first storage node to the second storage node of the battery stack for storage via wireless communication; For each second storage node of the battery stack, each abnormal cell data stored in the second storage node is analyzed to determine the abnormal cause of the cell having the abnormal cell data in the battery stack.

2. The method according to claim 1, characterized in that The step of determining abnormal cell data from each cell data includes: Acquire status data of the battery cluster; wherein the status data is used to characterize the distribution of cell data of each cell included in the battery cluster; The cell data out of the distribution state is determined as the abnormal cell data from among the cell data.

3. The method according to claim 1, characterized in that The abnormal reason includes an abnormal indicator; The step of determining the abnormal cause of the battery cell in the battery stack having the abnormal battery cell data comprises: Determine the target exception processing device corresponding to each exception indicator according to the preset corresponding relationship between each exception indicator and the exception processing device; A control instruction of the abnormality handling device is generated based on the abnormal cell data, and the control instruction is sent to the target abnormality handling device through wireless communication, so that the abnormality handling device executes the control instruction.

4. The method according to claim 3, characterized in that The step of determining the abnormal cause of the battery cell in the battery stack having the abnormal battery cell data comprises: If the target exception handling device corresponding to the exception indicator is not determined according to the preset correspondence between each indicator and the exception handling device, then The abnormal cause and the abnormal cell data are sent to the terminal sent to the target object through wireless communication for display, so that the target object determines an abnormality handling strategy based on the abnormal cause and the abnormal cell data.

5. The method according to claim 1, characterized in that The total number of cells contained in each battery cluster is the same; the battery clusters are connected in parallel.

6. The method according to claim 1, characterized in that The battery cell data includes a voltage value of the battery cell; The method further comprises: The battery cells in each battery cluster are discharged, and the voltage values ​​of the battery cells are collected in real time. When it is detected that the minimum value among the voltage values ​​of the battery cells is less than the battery cell voltage threshold, the discharge operation of the battery cells is stopped.

7. The method according to claim 1, characterized in that Each battery cluster also includes a plurality of battery packs, and each battery pack includes a plurality of battery modules; The method further comprises: For each battery cluster, when the number of battery packs included in the battery cluster exceeds a preset threshold, obtaining a difference between the number of battery packs and the preset threshold, and selecting battery packs with the difference number from each battery pack as battery packs to be removed; For each battery cluster, the battery modules in each battery pack to be removed in the battery cluster are distributed to each battery pack that has not been selected, and each battery pack to be removed is removed.

8. A battery abnormality detection device, characterized in that: include: A first storage module is used for sending the cell data of each cell in each battery module to the first storage node of the battery cluster for storage through wireless communication; A second storage module is used for determining abnormal cell data from the cell data stored in the first storage node for each battery cluster, and sending the abnormal cell data stored in the first storage node to the second storage node of the battery stack for storage via wireless communication; The abnormality analysis module is used to analyze the abnormal cell data stored in the second storage node of each battery stack to determine the abnormal cause of the cell with the abnormal cell data in the battery stack.

9. An electronic device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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