Energy storage device, control method and control device

Abstract

The embodiment of the invention discloses an energy storage device, a control method and a control device, and relates to the technical field of batteries. The method comprises the steps that first ray intensity information is acquired, the first ray intensity information is used for indicating the intensity of a first ray signal of a diaphragm of at least one battery cell, the diaphragm of the at least one battery cell is labeled by radioisotope, and the at least one battery cell belongs to an energy storage device; and according to the first ray intensity information and the reference ray intensity information, determining whether the at least one battery cell has a thermal runaway risk or not. According to the method, early warning and prevention can be timely and accurately carried out on the safety problem of the energy storage device.

Description

Energy storage device, control method and control device Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and in particular to an energy storage device, a control method, and a control device. Background Art

[0002] With the rapid development of power battery technology, battery safety issues are also increasing. Currently, battery safety has become a major bottleneck restricting the development of battery technology. Battery safety not only threatens customer trust in the product but also threatens the safety of users. Therefore, how to timely and accurately warn and prevent battery safety issues remains a critical issue that needs to be addressed.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide an energy storage device, a control method, and a control device for timely and accurately providing early warning and prevention of safety issues of the energy storage device.

[0005] In a first aspect, an embodiment of the present application provides an energy storage device, comprising: at least one battery cell, each of the at least one battery cell comprising a diaphragm, and the diaphragm being labeled with a radioactive isotope; a first detection unit, for obtaining first radiation intensity information of the at least one battery cell, the first radiation intensity information being used to indicate the intensity of a first radiation signal of the diaphragm of the at least one battery cell, the first radiation intensity information and reference radiation intensity information being used to determine whether the at least one battery cell has a risk of thermal runaway.

[0006] Through the above-mentioned energy storage device, by using radioactive isotopes to label the diaphragm of the battery cell, the degree of aging or damage of the diaphragm can be monitored through changes in the radiation signal emitted by the diaphragm, which helps to timely and accurately identify the deformation of the battery cell diaphragm, so as to timely warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device, thereby ensuring the safety of the energy storage device.

[0007] In combination with the first aspect, in one possible design, the at least one battery cell is arranged vertically in the energy storage device, wherein the first detection unit is located on the top surface of the at least one battery cell; or, the first detection unit is located on the bottom surface of the at least one battery cell.

[0008] With the above energy storage device, by deploying detection units on the top or bottom surface of the battery cell, the detection units can more comprehensively and fully sense the degree of aging or damage of the diaphragms of each battery cell, which helps to timely and accurately identify the deformation of the battery cell diaphragms, so as to timely warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device, thereby ensuring the safety of the energy storage device.

[0009] In combination with the first aspect, in a possible design, the at least one battery cell is arranged vertically in the energy storage device, and the first detection unit is located on a side of the at least one battery cell.

[0010] By deploying detection units on the sides of the battery cells in the above energy storage device, the detection units can, to a certain extent, sense the degree of aging or damage of battery cells deployed in the same row or column. This helps to promptly and accurately identify the deformation of the battery cell diaphragm, so as to promptly provide early warning and prevention of thermal runaway risks of short circuit types within the energy storage device, thereby ensuring the safety of the energy storage device. Furthermore, with the help of other equipment, it is possible to accurately locate problematic battery cells in a row or column of battery cells with safety issues, so as to promptly and accurately identify and prevent the problem batteries.

[0011] In combination with the first aspect, in one possible design, the energy storage device further includes: a second detection unit, used to obtain second radiation intensity information of the at least one battery cell, wherein the second radiation intensity information is used to indicate the intensity of the second radiation signal of the diaphragm of the at least one battery cell, and the first radiation intensity information, the second radiation intensity information and the baseline radiation intensity information are used to determine whether there is a risk of thermal runaway for the at least one battery cell.

[0012] In combination with the first aspect, in one possible design, the at least one battery cell is arranged vertically in the energy storage device, and at least one of the second detection unit and the first detection unit is located on the top surface or side surface of the at least one battery cell.

[0013] Through the above energy storage device, by deploying detection units on at least one surface of the battery cell, the radiation intensity information obtained by the detection units at different positions is helpful to achieve timely and accurate positioning of battery cells with safety issues, thereby achieving safety warning and safety prevention.

[0014] In combination with the first aspect, in a possible design, the energy storage device further includes: an outer frame for wrapping the at least one battery cell, wherein the first detection unit and the second detection unit are located on an inner wall of the outer frame.

[0015] Through the above energy storage device, a structured energy storage device can be obtained with the help of an outer frame. By arranging at least one detection unit on the inner wall of the outer frame, it helps to timely sense the changes in the diaphragm of each battery cell, thereby timely and accurately warning and preventing safety issues of each battery cell.

[0016] In combination with the first aspect, in a possible design, the shape of each battery cell in the at least one battery cell includes any one of the following: a cylinder, a cube, or a cuboid.

[0017] Through the above energy storage device, the shape (or size, etc.) and other specifications of each battery cell can be flexibly configured, and the embodiments of the present application do not limit this.

[0018] In combination with the first aspect, in one possible design, the radioactive isotope includes C14 or H3.

[0019] In conjunction with the first aspect, in one possible design, the energy storage device takes any of the following forms: a battery pack or a battery module, and the energy storage device is integrated into the vehicle frame or chassis. It should be understood that the product form or deployment method of the energy storage device in the embodiments of this application is provided as an example and does not constitute any limitation. In other embodiments, the energy storage device may be deployed elsewhere in the vehicle, or on a terminal device other than the vehicle, which will not be further described here.

[0020] On the second aspect, the embodiments of the present application further provide a control method, which can be implemented by a control device, which can be deployed on the vehicle side. The control device can be a device associated with the vehicle's energy storage device, which can be a hardware device or a software device, and can be connected to the energy storage device in a wired manner or wirelessly. The embodiments of the present application do not limit this. For example, the control device can be a vehicle-mounted terminal, a vehicle control unit (VCU), or a vehicle domain controller (VDC). The embodiments of the present application do not limit the product form of the control device.

[0021] The method may include: obtaining first ray intensity information, wherein the first ray intensity information is used to indicate the intensity of a first ray signal of a diaphragm of at least one battery cell, the diaphragm of the at least one battery cell is labeled with a radioactive isotope, and the at least one battery cell belongs to an energy storage device; and determining whether the at least one battery cell has a risk of thermal runaway based on the first ray intensity information and reference ray intensity information.

[0022] Through the above method, the control device can compare the first radiation intensity information of at least one battery cell of the energy storage device with the reference radiation intensity information to determine the changes in the diaphragms of each battery cell in the energy storage device, thereby monitoring whether each battery cell has safety issues such as thermal runaway risks.

[0023] In conjunction with the second aspect, in one possible design, the further step includes: sending a first message, wherein the first message is used to instruct an output device to output a second message, and the second message is used to indicate that the at least one battery cell is at risk of thermal runaway. For example, the output device includes a human-machine interface (HMI) or a speaker associated with the vehicle in which the energy storage device is located, and the HMI is an onboard terminal of the vehicle or a smart terminal of a user using the vehicle.

[0024] Through the above method, the control device can send the first information, which is associated with the second information output by the output device, to remind the user to take early warning and safety precautions for the safety issues of the battery cells of the energy storage device.

[0025] In conjunction with the second aspect, in one possible design, obtaining the first radiation intensity information includes: sensing a first radiation signal from a separator of the at least one battery cell using a first detection unit among at least one detection unit; and converting the sensed first radiation signal into the first radiation intensity information. For example, the first detection unit may be located on the top or bottom surface of the at least one battery cell.

[0026] Through the above method, the first detection unit can more comprehensively and fully sense the degree of aging or damage of the diaphragm of each battery cell, which helps to timely and accurately identify the deformation of the battery cell diaphragm, so as to timely warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device, thereby ensuring the safety of the energy storage device.

[0027] In conjunction with the second aspect, in one possible design, the method further includes: obtaining second ray intensity information, wherein the second ray intensity information is used to indicate the intensity of the second ray signal of the diaphragm of at least one battery cell; and determining whether the at least one battery cell is at risk of thermal runaway based on the first ray intensity information and the baseline ray intensity information, specifically including: determining whether the at least one battery cell is at risk of thermal runaway based on the first ray intensity information, the second ray intensity information, and the baseline ray intensity information. For example, the second detection unit can be located on a different surface from the first detection unit. For example, if the first detection unit is located on the top or bottom surface of the at least one battery cell, the second detection unit can be located on the side of the at least one battery cell.

[0028] Through the above method, the second ray intensity information can be used as a supplement to provide the control device with detection data of different dimensions (for example, different sensing positions) to improve the detection accuracy of the control device, which helps to timely and accurately identify the deformation of the battery cell diaphragm, so as to timely warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device, thereby ensuring the safety of the energy storage device.

[0029] In combination with the second aspect, in a possible design, obtaining the second ray intensity information includes: sensing the second ray signal of the diaphragm of the at least one battery cell through a second detection unit in at least one detection unit; and converting the sensed second ray signal into the second ray intensity information.

[0030] Through the above method, by combining the detection results of the first detection unit and the second detection unit, the degree of aging or damage of the diaphragm of each battery cell can be sensed more comprehensively and fully, which helps to timely and accurately identify the deformation of the battery cell diaphragm, so as to timely warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device, thereby ensuring the safety of the energy storage device.

[0031] In combination with the second aspect, in one possible design, the at least one battery cell is arranged vertically in the energy storage device, and the positional relationship between the at least one detection unit and the at least one battery cell includes at least one of the following: the at least one detection unit is located on the top surface of the at least one battery cell; the at least one detection unit is located on the bottom surface of the at least one battery cell; or, the at least one detection unit is located on the side of the at least one battery cell.

[0032] Through the above method, the position of the detection unit and the battery cell can be flexibly set to more comprehensively and fully sense the degree of aging or damage of the diaphragm of each battery cell, which helps to timely and accurately identify the deformation of the battery cell diaphragm, so as to timely warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device, thereby ensuring the safety of the energy storage device.

[0033] In combination with the second aspect, in a possible design, the energy storage device includes an outer frame, the outer frame is used to wrap the at least one battery cell, and the at least one detection unit is located on an inner wall of the outer frame.

[0034] Through the above method, a structured energy storage device can be obtained with the help of an outer frame. By setting at least one detection unit on the inner wall of the outer frame, it helps to timely sense the changes in the diaphragms of each battery cell, thereby timely and accurately warning and preventing safety issues of each battery cell.

[0035] In combination with the second aspect, in a possible design, the conversion of the sensed first ray signal into the first ray intensity information specifically includes: converting the sensed first ray signal into third ray intensity information, wherein the third ray intensity information is in matrix form, and the dimension of the matrix corresponding to the third ray intensity information is M*N, where M and N are integers greater than or equal to 1; according to the sampling accuracy t, converting the third ray intensity information into the first ray intensity information, wherein t is an integer greater than or equal to 1.

[0036] Through the above method, the elements in the matrix can be used to represent the intensity of the ray signal of each battery cell at different positions, and the changes in each battery cell can be displayed in a more intuitive way.

[0037] In combination with the second aspect, in a possible design, the first ray intensity information is in matrix form, and the sampling accuracy t is specifically used to convert the M*N dimensional matrix corresponding to the third ray intensity information into an element enrichment matrix corresponding to the first ray intensity information, and the dimension of the element enrichment matrix is ​​[M / t, N / t].

[0038] Through the above method, the sampled sensor dimension can be converted into a lower comparison dimension through the preset sampling accuracy, thereby reducing the overall computational complexity.

[0039] In combination with the second aspect, in a possible design, determining whether the at least one battery cell has a risk of thermal runaway based on the first ray intensity information and the baseline ray intensity information specifically includes: calculating the deformation of the diaphragm of each battery cell in the at least one battery cell based on the first ray intensity information and the baseline ray intensity information; if there is a first battery cell in the at least one battery cell that meets the deformation condition, then the at least one battery cell has a risk of thermal runaway, wherein the deformation condition includes: the deformation of the diaphragm of the first battery cell is greater than or equal to the deformation threshold corresponding to the type of the first battery cell.

[0040] Through the above method, it is possible to determine whether there is a risk of thermal runaway by comparing the deformation of the diaphragm of each battery cell with the corresponding deformation threshold.

[0041] In combination with the second aspect, in one possible design, the baseline radiation intensity information includes the radiation intensity information of the at least one battery cell when it leaves the factory, and the method further includes: determining the type of the at least one battery cell based on the baseline radiation intensity information; and obtaining the deformation value threshold corresponding to the type of the at least one battery cell.

[0042] Through the above method, as an example, when the energy storage device leaves the factory, the initial sensing information of each battery cell of the energy storage device can be recorded. By comparing the sensing data with the radiation intensity information in a preset database, the type of each battery cell can be determined, so as to obtain the deformation value threshold corresponding to the type of battery cell, so as to subsequently use the deformation value threshold to determine whether the diaphragm of the corresponding battery cell has a thermal runaway risk.

[0043] In combination with the second aspect, in one possible design, the radioactive isotope includes C14 or H3.

[0044] In combination with the second aspect, in a possible design, the shape of each battery cell in the at least one battery cell includes any one of the following: a cylinder, a cube, or a cuboid.

[0045] Through the above method, the shape (or size, etc.) and other specifications of each battery cell can be flexibly configured, and the embodiments of the present application do not limit this.

[0046] In conjunction with the second aspect, in one possible design, the energy storage device takes any of the following forms: a battery pack or a battery module, and the energy storage device is integrated into the vehicle frame or chassis. It should be understood that the product form or deployment method of the energy storage device in the embodiments of this application is provided as an example and does not constitute any limitation. In other embodiments, the energy storage device may be deployed elsewhere in the vehicle, or on a terminal device other than the vehicle, which will not be further described here.

[0047] In a third aspect, an embodiment of the present application provides a control device, comprising: an acquisition unit for acquiring first ray intensity information, wherein the first ray intensity information is used to indicate the intensity of a first ray signal of a diaphragm of at least one battery cell, the diaphragm of the at least one battery cell is labeled with a radioactive isotope, and the at least one battery cell belongs to an energy storage device; a determination unit for determining whether the at least one battery cell has a risk of thermal runaway based on the first ray intensity information and the baseline ray intensity information.

[0048] In combination with the third aspect, in a possible design, it may also include: sending a first information, wherein the first information is used to instruct the output device to output a second information, and the second information is used to indicate that there is a risk of thermal runaway for the at least one battery cell.

[0049] In combination with the third aspect, in one possible design, the output device includes a human-machine interface HMI or a speaker associated with the vehicle where the energy storage device is located, and the HMI belongs to the vehicle-mounted terminal of the vehicle or the smart terminal of the user using the vehicle.

[0050] In combination with the third aspect, in a possible design, the acquisition unit is specifically used to: sense the first ray signal of the diaphragm of the at least one battery cell through the first detection unit in at least one detection unit; and convert the sensed first ray signal into the first ray intensity information.

[0051] In combination with the third aspect, in a possible design, the method also includes: obtaining second ray intensity information, wherein the second ray intensity information is used to indicate the intensity of the second ray signal of the diaphragm of at least one battery cell; the determination unit is specifically used to: determine whether there is a risk of thermal runaway for the at least one battery cell based on the first ray intensity information, the second ray intensity information and the baseline ray intensity information.

[0052] In combination with the third aspect, in a possible design, the acquisition unit is specifically used to: sense the second ray signal of the diaphragm of the at least one battery cell through a second detection unit in at least one detection unit; and convert the sensed second ray signal into the second ray intensity information.

[0053] In combination with the third aspect, in one possible design, the at least one battery cell is arranged vertically in the energy storage device, and the positional relationship between the at least one detection unit and the at least one battery cell includes at least one of the following: the at least one detection unit is located on the top surface of the at least one battery cell; the at least one detection unit is located on the bottom surface of the at least one battery cell; or, the at least one detection unit is located on the side of the at least one battery cell.

[0054] In combination with the third aspect, in a possible design, the energy storage device includes an outer frame, the outer frame is used to wrap the at least one battery cell, and the at least one detection unit is located on the inner wall of the outer frame.

[0055] In combination with the third aspect, in a possible design, the conversion of the sensed first ray signal into the first ray intensity information specifically includes: converting the sensed first ray signal into third ray intensity information, wherein the third ray intensity information is in matrix form, and the dimension of the matrix corresponding to the third ray intensity information is M*N, where M and N are integers greater than or equal to 1; according to the sampling accuracy t, converting the third ray intensity information into the first ray intensity information, wherein t is an integer greater than or equal to 1.

[0056] In combination with the third aspect, in a possible design, the first ray intensity information is in matrix form, and the sampling accuracy t is specifically used to convert the M*N dimensional matrix corresponding to the third ray intensity information into an element enrichment matrix corresponding to the first ray intensity information, and the dimension of the element enrichment matrix is ​​[M / t, N / t].

[0057] In combination with the third aspect, in a possible design, the determination unit is specifically used to: calculate the deformation amount of the diaphragm of each battery cell in the at least one battery cell based on the first ray intensity information and the reference ray intensity information; if there is a first battery cell in the at least one battery cell that meets the deformation condition, then the at least one battery cell is at risk of thermal runaway, wherein the deformation condition includes: the deformation amount of the diaphragm of the first battery cell is greater than or equal to the deformation amount threshold corresponding to the type of the first battery cell.

[0058] In combination with the third aspect, in one possible design, the baseline radiation intensity information includes the radiation intensity information of the at least one battery cell when it leaves the factory, and the determination unit is further used to: determine the type of the at least one battery cell based on the baseline radiation intensity information; the acquisition unit is also used to obtain the deformation value threshold corresponding to the type of the at least one battery cell.

[0059] In combination with the third aspect, in one possible design, the radioactive isotope includes C14 or H3.

[0060] In combination with the third aspect, in one possible design, the shape of each battery cell in the at least one battery cell includes any one of the following: a cylinder, a cube, or a cuboid.

[0061] In conjunction with the third aspect, in one possible design, the energy storage device takes any of the following forms: a battery pack or a battery module, and the energy storage device is integrated into the vehicle frame or chassis. It should be understood that the product form or deployment method of the energy storage device in the embodiments of this application is provided as an example and does not constitute any limitation. In other embodiments, the energy storage device may be deployed elsewhere in the vehicle, or on a terminal device other than the vehicle. These details will not be elaborated here.

[0062] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising an energy storage device as described in the first aspect and any possible design of the first aspect.

[0063] In a fifth aspect, an embodiment of the present application provides a terminal device, comprising a processor coupled to a memory: the processor is configured to execute a computer program or instruction stored in the memory, so that the terminal device performs the method described in the second aspect and any possible design of the second aspect. For example, the terminal device includes, but is not limited to: intelligent transportation equipment (such as cars, ships, drones, trains, trucks, etc.), intelligent manufacturing equipment (such as robots, industrial equipment, intelligent logistics, smart factories, etc.), and intelligent terminals (mobile phones, computers, tablets, PDAs, desktops, headphones, speakers, wearable devices, vehicle-mounted devices, etc.).

[0064] In a sixth aspect, an embodiment of the present application provides a readable storage medium, including a program or instruction. When the program or instruction is executed, the method described in the second aspect and any possible design of the second aspect is executed.

[0065] In a seventh aspect, an embodiment of the present application provides a computer program product, which, when executed on a computer, enables the computer to execute the method described in the second aspect and any possible design of the second aspect.

[0066] Based on the implementations provided in the above aspects, the embodiments of the present application can be further combined to provide more implementations.

[0067] The technical effects that can be achieved by any possible implementation method in any of the third to seventh aspects mentioned above can be referred to the description of the technical effects that can be achieved by any possible implementation method in any of the first to second aspects mentioned above, and repetitions will not be discussed. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] FIG1 is a schematic diagram showing an application scenario of an embodiment of the present application;

[0069] FIG2 is a schematic diagram showing a system architecture of an embodiment of the present application;

[0070] FIG3 shows a schematic structural diagram of an energy storage device according to an embodiment of the present application;

[0071] FIG4 shows a schematic structural diagram of an energy storage device according to an embodiment of the present application;

[0072] FIG5 is a schematic flow chart of a control method according to an embodiment of the present application;

[0073] FIG6 is a schematic diagram showing the deformation of the diaphragm according to an embodiment of the present application;

[0074] FIG7 shows a schematic structural diagram of a control device according to an embodiment of the present application;

[0075] FIG8 shows a schematic diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0076] Below, some terms in this application are explained to facilitate understanding by those skilled in the art.

[0077] 1. Communication device:

[0078] A device or equipment that provides data connectivity.

[0079] For example, in practical applications, the communication device may be a terminal device, including a device that provides voice and / or data connectivity to a user, specifically, a device that provides voice to a user, or a device that provides data connectivity to a user, or a device that provides both voice and data connectivity to a user. For example, it may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem. The terminal device may, for example, communicate with a core network via a radio access network (RAN) and exchange voice and / or data with the RAN.

[0080] In a specific implementation process, the terminal device may include but is not limited to a vehicle, user equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device (D2D) terminal device, a vehicle to everything (V2X) terminal device, a machine-to-machine / machine-type communications (M2M / MTC) terminal device, an Internet of Things (IoT) terminal device or a narrowband Internet of Things (NB-IoT) terminal device, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point (AP), a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, etc. For another example, the terminal device may be specifically implemented as: a mobile phone (or "cellular" phone), or a computer with a mobile terminal device; a dedicated terminal device in the IoT, or industrial control equipment, or remote medical equipment, or smart grid equipment, or smart city equipment, etc.; a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device, etc.; a personal communication service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. In an optional design, the terminal device may also be implemented as a restricted device, such as a device with low power consumption, a device with limited storage capacity, or a device with limited computing power.In an optional design, the terminal device may include components such as a barcode, a radio frequency identification (RFID), a sensor, a global positioning system (GPS), and a laser scanner.

[0081] In an optional design, the terminal device can also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. They are a general term for the application of wearable technology to intelligently design daily wearables to develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but can also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets, smart helmets, smart jewelry, etc. for vital sign monitoring.

[0082] In an optional design, the terminal device may also be a machine intelligence device such as a self-driving device, a transportation safety device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, etc.

[0083] The various terminal devices introduced above, if located on the vehicle (for example, placed inside the vehicle or installed inside the vehicle), can be considered as vehicle components, such as sensors, battery cells or battery modules or other actuators included in the battery management system.

[0084] In an optional design, the terminal device may further include a relay. Alternatively, it can be understood that the terminal device may include any device capable of performing data communication with the base station.

[0085] For example, the communication device may be a network device, such as an access network (AN) device, which may include a device in the access network that communicates with a wireless terminal device over an air interface through one or more cells, such as a base station or access point. The base station may be configured to convert received air frames into and from Internet Protocol (IP) packets, acting as a router between the terminal device and the rest of the access network, which may include an IP network. In an optional design, the network device may include a base station in a second generation (2G) communication system, or a base station in a third generation (3G) communication system, or a base station in a fourth generation (4G) communication system, such as an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in a long term evolution (LTE) system or long term evolution-advanced (LTE-A), or may also include a next generation node B (gNB) in a fifth generation (5G) new radio (NR) system (also referred to as an NR system), or may also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system, as well as base stations in various future communication systems, such as a sixth generation (6G) new radio (NR) system. The network device may include a base station in a 6G (6th generation) communication system, which is not limited in the embodiments of the present application. Another example is a network device that may include a V2X network device, namely a road side unit (RSU). The RSU may include a fixed infrastructure entity that supports V2X applications and may exchange messages with other entities that support V2X applications.

[0086] It should be understood that in some technical scenarios, the name of an electronic device with similar data transmission and reception capabilities may not be called a communication module. However, for the convenience of description, in the embodiments of the present application, electronic devices with data transmission and reception capabilities are collectively referred to as communication modules, or simply modules.

[0087] 2. Battery management system (BMS):

[0088] The battery management system provides battery management functions, which may include but are not limited to monitoring the battery status (for example, the battery's voltage, current, temperature or deformation), calculating the battery's charge level and capacity, controlling the battery's charging and discharging, and communication functions.

[0089] Typically, a BMS includes a battery control unit (which may be referred to as a main board), a battery management unit (which may be referred to as a slave board), sensors (such as temperature sensors, current sensors, voltage sensors, smoke sensors, etc.), and controlled / managed batteries or other execution devices (such as heat spreaders, heating devices, etc.). The controlled / managed batteries may include battery cells or battery modules. Among them, the main board can be considered as a deployment management node, and the slave board can be considered as a deployment terminal node. The management node and the terminal node can communicate and interact to realize the battery management function. For example, after the terminal node deployed on the slave board obtains the corresponding battery cell information, the terminal node can send the battery cell information to the management node, and the management node performs the corresponding battery management function based on the received battery cell information.

[0090] In practical applications, the BMS may be an example of a communication device in the communication system of the embodiment of the present application.

[0091] 3. Battery Cell:

[0092] The battery cell is a component of the battery. Optionally, the battery may also include a protective circuit board. The protective circuit board refers to an integrated circuit board that protects the battery cell. The protective circuit board may include at least one of a protection chip, a metal oxide field effect transistor (MOS), a resistor, a capacitor, or a printed circuit board (PCB). The protective circuit board can be used to control the battery cell to perform charging, discharging, or power-off operations.

[0093] In some embodiments of the present application, a battery management unit (BMU) in a BMS may be associated with one or more battery cells. In other possible embodiments, the BMU may be associated with one or more battery cells and a protection circuit board. Furthermore, in other possible embodiments, the BMU may be associated with a protection circuit board.

[0094] 4. Battery module:

[0095] When multiple battery cells are encapsulated together in the same housing frame and connected to the outside world through a unified boundary, they form a module. A battery can include one or more battery modules. In some embodiments of the present application, the terminal node in the BMS can be set in the battery module.

[0096] The embodiments of the present application provide an energy storage device, a control method, and a control device for timely and accurately warning and preventing safety issues of the energy storage device. Among them, the method and the device are based on the same technical concept. Since the principles of the method and the device for solving problems are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated. Moreover, in the various embodiments of the present application, if there is no special explanation and logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0097] It should be noted that the vehicle driving scheme in the embodiment of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution-vehicle (LTE-V), vehicle to vehicle (V2V), etc. For example, it can be applied to a vehicle with a driving mobile function, or other devices in a vehicle with a driving mobile function. The other devices include but are not limited to: other sensors such as an on-board terminal, an on-board controller, an on-board module, an on-board module, an on-board component, an on-board chip, an on-board unit, an on-board radar or an on-board camera. The vehicle can implement the method provided in the embodiment of the present application through the on-board terminal, on-board controller, on-board module, on-board module, on-board component, on-board chip, on-board unit, on-board radar or on-board camera. Of course, the control scheme in the embodiment of the present application can also be used for other intelligent terminals with mobile control functions other than the vehicle, or be set in other intelligent terminals with mobile control functions other than the vehicle, or be set in a component of the intelligent terminal. The intelligent terminal can be an intelligent transportation device, a smart home device, a robot, etc. For example, it includes but is not limited to smart terminals or controllers, chips, radars, cameras and other sensors, and other components within smart terminals.

[0098] It should be noted that, in the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0099] Furthermore, unless otherwise specified, ordinal numbers such as "first" and "second" in the embodiments of this application are used to distinguish between multiple objects and are not used to define the priority or importance of multiple objects. For example, "first indication information" and "second indication information" are only used to distinguish different indication information, and do not indicate a difference in priority or importance between the two indication information.

[0100] To facilitate understanding, the embodiments of the present application are introduced below with reference to the accompanying drawings.

[0101] FIG1 is a schematic diagram of an application scenario according to an embodiment of the present invention. This application scenario may include a vehicle 100. In one possible implementation, this application scenario may also include a cloud server 200. Vehicle 100 and cloud server 200 may communicate via a network. In one embodiment, cloud server 200 may also be implemented as a virtual machine.

[0102] Some or all functions of the vehicle 100 are controlled by a computing platform 150 (or computer system). The computing platform 150 may include at least one processor 151, which may execute instructions 153 stored in a non-transitory computer-readable medium such as a memory 152. In some embodiments, the computing platform 150 may also be a plurality of computing devices that control individual components or subsystems of the vehicle 100 in a distributed manner. The processor 151 may be any conventional processor, such as a central processing unit (CPU). Alternatively, the processor 151 may also include a graphics processing unit (GPU), a field programmable gate array (FPGA), a system on chip (SoC), an application specific integrated circuit (ASIC), or a combination thereof.

[0103] Alternatively, the vehicle 100 may be a car, truck, motorcycle, bus, boat, airplane, helicopter, lawn mower, recreational vehicle, amusement park vehicle, construction equipment, tram, golf cart, train, etc., which is not particularly limited in this embodiment of the present application. In one possible implementation, the vehicle 100 may be an electric vehicle (EV), such as a two-wheel drive electric vehicle or a four-wheel drive electric vehicle, which is not particularly limited in this embodiment of the present application.

[0104] It should be understood that the structure of the vehicle in FIG1 should not be construed as limiting the embodiments of the present application.

[0105] The control method of the embodiment of the present application can be implemented by a control device (or a data processing device or a diagnostic device, the embodiment of the present application does not limit the device name). The control device can be an independent device, or a chip or component in the vehicle 100 shown in Figure 1, or a software module, which can be deployed on the relevant on-board equipment of the vehicle 100. The embodiment of the present application does not limit the product form and deployment method of the control device. In the following, for the sake of ease of understanding and description, the control scheme of the embodiment of the present application will be introduced by taking the vehicle control unit (VCU) or vehicle domain controller (VDC) of the computing platform 150 integrated in the aforementioned vehicle 100 as an example.

[0106] The implementation principles of the embodiments of the present application are introduced below.

[0107] FIG2 shows a schematic diagram of the system architecture of an embodiment of the present application.

[0108] Referring to Figure 2, the control device may include at least one detection unit and at least one battery cell, for example, represented as battery cell 1, battery cell 2 and battery cell 3, etc. The energy storage device can be integrated into the vehicle frame or chassis, etc. The energy storage device can take any of the following forms: a battery pack or a battery module. The embodiment of the present application does not limit the product form or deployment method of the energy storage device.

[0109] Each battery cell may include a diaphragm, which may be labeled with a radioactive isotope. The at least one detection unit may sense radioactive radiation signals emitted by the diaphragm of the at least one battery cell and provide the sensing result to a control device. The control device may interact with other modules in the vehicle to implement the control scheme of the embodiments of the present application.

[0110] For example, the control device can communicate with at least one detection unit, and through the at least one detection unit, constantly monitor the status of the battery cells of the energy storage device, so as to timely and accurately provide early warning and prevention of safety issues of the battery cells of the energy storage device, thereby ensuring the safety of vehicle use.

[0111] In one possible embodiment, each of the at least one detection unit may be an intensity sensor. The diaphragm of at least one battery cell of the energy storage device may emit a radioactive radiation signal in real time. The intensity sensor may sense the radiation signal emitted by the diaphragm of each battery cell and convert the sensed radiation signal into corresponding radiation intensity information, which may be used to indicate the intensity of the sensed radiation signal. The at least one detection unit may provide the radiation intensity information to the control device, which may determine changes in the diaphragms of each battery cell in the energy storage device by comparing the radiation intensity information with the reference radiation intensity information, thereby monitoring whether each battery cell has safety issues such as thermal runaway risks.

[0112] Furthermore, the control unit can provide the monitoring results obtained by monitoring at least one battery cell of the energy storage device to the vehicle's BMS, electronic stability control system (ESC) chassis controller, output device, etc. through the in-vehicle communication network to assist in realizing other functions of the vehicle.

[0113] For example, the control device can provide the monitoring results to an output device, which may include a human machine interface (HMI) or a speaker of the vehicle, so that the HMI or speaker can remind the user to issue an early warning of the safety problem of the battery cell of the energy storage device. Alternatively, the control device can provide the monitoring results to the BMS so that the battery management unit of the BMS can control the battery cell with thermal runaway risk (for example, represented as the first battery cell) to avoid the short-circuit thermal runaway hidden danger in the energy storage device as much as possible. Alternatively, if the energy storage device is integrated into the chassis of the vehicle, the control unit can provide the monitoring results to the ESC chassis controller, and the ESC chassis controller can control the battery cell with safety problems in the energy storage device (for example, represented as the first battery cell) to avoid the short-circuit thermal runaway hidden danger in the energy storage device as much as possible.

[0114] It should be noted that in Figure 2, the two-way arrows between different devices (or units, or modules) are only used to indicate that the modules can communicate with each other, and do not limit any communication method or information format, etc. The control device can adopt different communication methods or information formats to communicate with different modules. The control device can also have a protocol conversion or format conversion function, which is not limited in the embodiments of the present application. The other modules shown in Figure 2 are only examples, and the dotted boxes only identify the corresponding modules as optional modules. The vehicle may not contain some of the modules shown in Figure 2, and may also include other modules in addition to some of the modules shown in Figure 2, or replace some of the modules in Figure 2 with other modules not shown, which will not be repeated here.

[0115] As an example, the shape of each of the at least one battery cell in the energy storage device in FIG2 may include any of the following: a cylinder, a cube, or a cuboid. The at least one battery cell may be arranged vertically in the energy storage device, and the positional relationship between the at least one detection unit and the at least one battery cell includes at least one of the following: the at least one detection unit is located on the top surface of the at least one battery cell; the at least one detection unit is located on the bottom surface of the at least one battery cell; or the at least one detection unit is located on the side surface of the at least one battery cell. The number of the at least one detection unit and the at least one battery cell may be the same or different, and this embodiment of the application does not limit this.

[0116] 3 and 4 are schematic structural diagrams of energy storage devices according to embodiments of the present application.

[0117] Referring to Figure 3 , a rectangular parallelepiped represents a battery cell, and a black filled box represents a detection unit. The at least one battery cell of the energy storage device can be arranged vertically, and the at least one detection unit can be located on the top surface and at least one side surface of the at least one battery cell. In one possible embodiment, the energy storage device may further include an outer frame (e.g., a rectangular parallelepiped shape) that can be used to enclose the at least one battery cell, and the at least one detection unit of the energy storage device can be located on the inner wall of the outer frame.

[0118] Referring to Figure 4 , a battery cell is represented by a cylinder, and a detection unit is represented by a black filled box. The at least one battery cell of the energy storage device can be arranged vertically, and the at least one detection unit can be located on the top surface and a side surface of the at least one battery cell. In one possible embodiment, the energy storage device may further include an outer frame (e.g., a rectangular parallelepiped shape) that can be used to enclose the at least one battery cell, and the at least one detection unit of the energy storage device can be located on the inner wall of the outer frame.

[0119] It should be understood that Figures 3 and 4 are merely illustrative of the shape of the battery cells or the positional relationship between the battery cells and the detection units in the embodiments of the present application and are not intended to be limiting. In other embodiments, each of the at least one battery cell may have an irregular shape or other regular shapes not shown. The at least one detection unit may be deployed only on the top or bottom surface of the at least one battery cell. Alternatively, the at least one detection unit may be deployed only on at least one side surface of the at least one battery cell. Alternatively, the at least one detection unit may be deployed on the bottom surface and at least one side surface of the at least one battery cell. If the at least one detection unit is located only on the top or bottom surface of the at least one battery cell, the number of the at least one detection unit and the at least one battery cell may be the same. If the at least one detection unit is located on the side surface of the at least one battery cell, the number of detection units on a single side surface is the same as the number of rows or columns of the at least one battery cell. The energy storage device may be frameless, and the at least one detection unit may be deployed at any location on the vehicle where it can sense the radiation signal emitted by the diaphragm of the at least one battery cell. This embodiment of the present application does not limit this.

[0120] When implementing the control method of the embodiment of the present application, referring to FIG5 , the control method may include the following steps:

[0121] S510: The control device obtains first ray intensity information.

[0122] S520: The control device determines whether there is a thermal runaway risk for the at least one battery cell based on the first ray intensity information and the reference ray intensity information.

[0123] In an embodiment of the present application, the first ray intensity information can be used to indicate the intensity of the first ray signal of the diaphragm of at least one battery cell. The diaphragm of the at least one battery cell can be marked with a radioactive isotope. The at least one battery cell belongs to an energy storage device, and the radioactive isotope may include C14 or H3.

[0124] For example, the at least one battery cell can be arranged vertically in the energy storage device (as shown in Figure 3 or Figure 4), and the positional relationship between the at least one detection unit and the at least one battery cell includes at least one of the following: the at least one detection unit is located on the top surface of the at least one battery cell; the at least one detection unit is located on the bottom surface of the at least one battery cell; or the at least one detection unit is located on the side of the at least one battery cell. In an optional embodiment, the energy storage device may further include an outer frame, which is used to wrap the at least one battery cell, and the at least one detection unit may be located on the inner wall of the outer frame.

[0125] Each detection unit can be implemented as an intensity sensor, which can directly convert the sensed radiation signal into corresponding radiation intensity information. When the energy storage device leaves the factory, the radiation intensity information of each battery cell at this time can be compared with the radiation intensity information in the preset database to determine the type of each battery cell of the energy storage device. The control device can record the radiation intensity information initially collected by each intensity sensor, for example, represented as S 0 Furthermore, the control device may obtain a deformation threshold value corresponding to the type of each battery cell of the energy storage device.

[0126] During the use of the energy storage device, when S510 is specifically implemented, the control device can sense the first ray signal of the diaphragm of at least one battery cell through the first detection unit in at least one detection unit (for example, the detection unit located on the top surface of at least one battery cell in Figures 3 and 4), and convert the sensed first ray signal into first ray intensity information, for example, represented as S k , represents the real-time ray intensity information of the kth detection unit, the S k It can be a matrix with a dimension of M*N, where M and N are integers greater than or equal to 1.

[0127] When S520 is specifically implemented, the control device may use S 0 As the reference ray intensity information, by k The elements in S 0 Compare and calculate the deformation amount of the diaphragm of each battery cell in the at least one battery cell. If there is a first battery cell in the at least one battery cell that meets the deformation condition, then the at least one battery cell is at risk of thermal runaway. For example, the deformation condition may include: the deformation amount of the diaphragm of the first battery cell is greater than or equal to the deformation amount threshold corresponding to the type of the first battery cell. When calculating the deformation amount, as an example, the control device can calculate the absolute value of the element of the matrix corresponding to the reference ray intensity information and the difference between the absolute value of the element at the same position of the matrix corresponding to the first ray intensity information. If the difference is greater than the corresponding deformation amount threshold, it is considered that the diaphragm of the battery cell corresponding to the position of this element is at risk of thermal runaway. Thus, the control device can obtain information such as the position or number of the first battery cell at risk of thermal runaway based on the position of the matrix element.

[0128] Furthermore, the control device may transmit a first message, which may be used to instruct an output device to output a second message, which may be used to indicate that the at least one battery cell is at risk of thermal runaway. For example, the output device may include an HMI or speaker associated with the vehicle in which the energy storage device is located. The HMI may be an onboard terminal of the vehicle or a smart terminal of a user using the vehicle. In an optional embodiment, the second message may also be used to indicate information such as the location or number of the first battery cell in the at least one battery cell that is at risk of thermal runaway.

[0129] It should be noted that in the embodiment of the present application, the initial radiation intensity information detected by each detection unit (intensity sensor) when the energy storage device leaves the factory is used as the baseline radiation intensity information. This is only an example and not a limitation. In some embodiments, the baseline radiation intensity information can be selected in other ways. For example, it can be manually set radiation intensity information, or it can be the average radiation intensity information obtained based on the diaphragm of different types of battery cells, or it can be sampling information of statistical data collected according to the corresponding type of battery cell, etc. The embodiment of the present application does not limit this.

[0130] In order to further improve the detection accuracy of the control device, in an optional embodiment, when implementing S510, the control device can also obtain second ray intensity information, wherein the second ray intensity information is used to indicate the intensity of the second ray signal of the diaphragm of at least one battery cell, and the second ray signal and the first ray signal are ray signals occurring at the same time. Referring to the energy storage device shown in Figures 3 and 4, the second detection unit can be located on at least one side of at least one battery cell. When implementing S520, the control device can specifically determine whether there is a risk of thermal runaway for the at least one battery cell based on the first ray intensity information, the second ray intensity information and the reference ray intensity information. Thus, by using detection data of different dimensions (such as different sensing positions), the detection accuracy of the control device is improved, which helps to timely and accurately identify the deformation of the battery cell diaphragm, so as to timely warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device, thereby ensuring the safety of the energy storage device.

[0131] In the embodiment of the present application, the dimension of each detection unit is M*N. When the number of detection units is large, the calculation amount is large when calculating the deformation of the separator of each battery cell. To reduce the calculation amount, in an optional embodiment, when implementing S510, converting the sensed first ray signal into the first ray intensity information may specifically include: converting the sensed first ray signal into third ray intensity information, wherein the third ray intensity information is in matrix form, and the dimension of the matrix corresponding to the third ray intensity information is M*N, where M and N are integers greater than or equal to 1; and converting the third ray intensity information into the first ray intensity information according to a sampling precision t, wherein t is an integer greater than or equal to 1. Converting the sensed second ray signal into the second ray intensity information may specifically include: converting the sensed second ray signal into fourth ray intensity information, wherein the fourth ray intensity information is in matrix form, and the dimension of the matrix corresponding to the fourth ray intensity information is M*N, where M and N are integers greater than or equal to 1; and converting the fourth ray intensity information into the second ray intensity information according to a sampling precision t, wherein t is an integer greater than or equal to 1.

[0132] In this embodiment of the present application, the sampling accuracy t is specifically used to convert the M*N dimensional matrix corresponding to the third ray intensity information into an element enrichment matrix corresponding to the first ray intensity information, where the dimension of the element enrichment matrix is ​​[M / t, N / t]. The sampling accuracy t may be an empirical value that can be set when the energy storage device leaves the factory and is generally a fixed value.

[0133] For example, when S510 is implemented, a matrix corresponding to the first ray intensity information or a matrix corresponding to the second ray intensity information may be constructed by the following expression (1):

[0134]

[0135] Wherein, k represents the kth detection unit (intensity sensor); A k A represents the element enrichment matrix corresponding to the kth detection unit; k The dimension of A is [M / t, N / t]; k [i,j] represents A k The element in row i and column j of S k [q,p] represents S k The element in the qth row and pth column of .

[0136] S 0 The constructed element enrichment matrix can be expressed as A 0 The control device constructs the element enrichment matrix A corresponding to each detection unit through the above expression (1):k After that, by the element enrichment matrix A k The elements in A 0 The deformation of the diaphragm of each battery cell is calculated by comparing the elements in the matrix, and then the deformation is compared with the corresponding deformation threshold. If there is a first battery cell that meets the deformation condition among the at least one battery cell, then the at least one battery cell is at risk of thermal runaway, wherein the deformation condition includes: the deformation of the diaphragm of the first battery cell is greater than or equal to the deformation threshold corresponding to the type of the first battery cell. The calculation method of this deformation variable can also be based on the absolute value of the matrix elements. For details, please refer to the relevant description above and will not be repeated here.

[0137] It should be noted that, in the embodiment of the present application, the diaphragm of each battery cell uses a safe dose of radioactive isotope as a production material. The ray signal emitted by the radioactive isotope can penetrate metal and can be collected by any detection unit. Through the method described in the above embodiments of the present application, at least one detection unit is set to adapt to the position of the battery cell. Through the obtained ray intensity information, the thermal runaway risk diaphragm caused by different inducements such as aging and deformation of the diaphragm, excessive thinning of the diaphragm (such as thinning due to excessive heat, etc.), and damage to the diaphragm (such as perforation, or puncture of the diaphragm by precipitated lithium dendrites, etc.) shown in Figure 6 can be accurately identified. The diaphragm is not affected by the battery cell, module frame and other metal structural parts, and the position of the abnormal battery cell can be accurately located, which helps to timely and accurately warn and prevent the risk of thermal runaway of the short circuit type in the energy storage device.

[0138] An embodiment of the present application also provides a control device, which can be used to execute the above method embodiment. Relevant features can be found in the above method embodiment and will not be repeated here.

[0139] As shown in Figure 7, in one example, the control device 700 may include: an acquisition unit 701 for acquiring first radiation intensity information, wherein the first radiation intensity information is used to indicate the intensity of a first radiation signal from a separator of at least one battery cell, the separator of the at least one battery cell being labeled with a radioactive isotope, and the at least one battery cell belonging to an energy storage device; and a determination unit 702 for determining whether the at least one battery cell is at risk of thermal runaway based on the first radiation intensity information and reference radiation intensity information. For specific implementation methods, please refer to the method steps implemented by the vehicle control device in the above method embodiment, and will not be repeated here.

[0140] It should be understood that the division of the various units in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into a physical entity, or they can be physically separated. In addition, the units in the device can be implemented in the form of a processor calling software; for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or realize the functions of the various units of the device, where the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units can be realized by designing the hardware circuits. The hardware circuit can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units by designing the logical relationship of the components in the circuit. For another example, in another implementation, the hardware circuit can be implemented by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units. All units of the above devices can be implemented in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0141] In an embodiment of the present application, a processor is a circuit with a signal processing capability. In one implementation, the processor may be a circuit with instruction reading and execution capability, such as a CPU, a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by an ASIC or PLD, such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0142] It can be seen that each unit in the above device can be one or more processors (or processing circuits) configured to implement the above method, such as: CPU, GPU, NPU, TPU, DPU, microprocessor, DSP, ASIC, FPGA, or a combination of at least two of these processor forms.

[0143] In addition, the various units in the above devices can be fully or partially integrated together, or can be implemented independently. In one implementation, these units are integrated together and implemented in the form of a system-on-a-chip (SOC). The SOC may include at least one processor for implementing any of the above methods or implementing the functions of the various units of the device. The type of the at least one processor can be different, for example, including a CPU and FPGA, a CPU and an artificial intelligence processor, a CPU and a GPU, etc.

[0144] In a simple embodiment, those skilled in the art may appreciate that the vehicle control devices in the above embodiments may all adopt the form shown in FIG8 .

[0145] As shown in FIG8 , the apparatus 800 includes at least one processor 810 and a communication interface 830. In an optional design, a memory 820 may also be included.

[0146] The specific connection medium between the processor 810 and the memory 820 is not limited in the embodiment of the present application.

[0147] In the apparatus shown in FIG. 8 , the processor 810 may transmit data through the communication interface 830 when communicating with other devices.

[0148] When the vehicle control device adopts the form shown in FIG8 , the processor 810 in FIG8 can call the computer-executable instructions stored in the memory 820 so that the device 800 can execute any of the above method embodiments.

[0149] An embodiment of the present application also relates to a chip system, which includes a processor for calling a computer program or computer instructions stored in a memory so that the processor executes the method of any of the above embodiments.

[0150] In a possible implementation, the processor may be coupled to the memory through an interface.

[0151] In a possible implementation, the chip system may also directly include a memory, in which a computer program or computer instructions are stored.

[0152] For example, the memory may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache memory. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0153] An embodiment of the present application further relates to a processor, which is used to call a computer program or computer instruction stored in a memory so that the processor executes the method described in any of the above embodiments.

[0154] For example, in the embodiments of the present application, the processor is an integrated circuit chip with signal processing capabilities. For example, the processor can be an FPGA, a general-purpose processor, a DSP, an ASIC or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, a system on chip (SoC), a CPU, a network processor (NP), a microcontroller unit (MCU), a PLD or other integrated chip, and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0155] It should be understood that the embodiments of the present application may be provided as methods, systems, or computer program products.

[0156] In one possible implementation, an embodiment of the present application provides a computer-readable storage medium, which stores program code. When the program code runs on the computer, the computer executes the above method embodiment.

[0157] In a possible implementation, an embodiment of the present application provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above method embodiment.

[0158] Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0159] 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 operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0160] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0161] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these changes and variations. In the various embodiments of the present application, unless otherwise specified or logically conflicting, the terms and / or descriptions between the various embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

Claims

1. An energy storage device, characterized in that: include: At least one battery cell, each of the at least one battery cell comprises a separator, and the separator is labeled with a radioactive isotope; The first detection unit is used to obtain first ray intensity information of the at least one battery cell, where the first ray intensity information is used to indicate the intensity of the first ray signal of the diaphragm of the at least one battery cell, and the first ray intensity information and the reference ray intensity information are used to determine whether there is a risk of thermal runaway for the at least one battery cell.

2. The energy storage device according to claim 1, characterized in that The at least one battery cell is arranged vertically in the energy storage device, wherein the first detection unit is located on the top surface of the at least one battery cell; or, the first detection unit is located on the bottom surface of the at least one battery cell.

3. The energy storage device according to claim 1, characterized in that The at least one battery cell is arranged vertically in the energy storage device, and the first detection unit is located on a side of the at least one battery cell.

4. The energy storage device according to any one of claims 1 to 3, characterized in that Also includes: The second detection unit is used to obtain second ray intensity information of the at least one battery cell, wherein the second ray intensity information is used to indicate the intensity of the second ray signal of the diaphragm of the at least one battery cell, and the first ray intensity information, the second ray intensity information and the baseline ray intensity information are used to determine whether there is a risk of thermal runaway for the at least one battery cell.

5. The energy storage device according to claim 4, characterized in that The at least one battery cell is arranged vertically in the energy storage device, and at least one of the second detection unit and the first detection unit is located on a top surface or a side surface of the at least one battery cell.

6. The energy storage device according to claim 5, characterized in that Also includes: An outer frame is used to wrap the at least one battery cell, wherein the first detection unit and the second detection unit are located on an inner wall of the outer frame.

7. The energy storage device according to any one of claims 1 to 6, characterized in that: The shape of each battery cell in the at least one battery cell includes any one of the following: a cylinder, a cube or a cuboid.

8. The energy storage device according to any one of claims 1 to 7, characterized in that: The radioactive isotopes include C14 or H3.

9. The energy storage device according to any one of claims 1 to 8, characterized in that: The energy storage device is in any of the following forms: a battery pack or a battery module, and the energy storage device is integrated into the frame or chassis of the vehicle.

10. A control method, characterized in that: include: Acquiring first ray intensity information, wherein the first ray intensity information is used to indicate the intensity of a first ray signal of a separator of at least one battery cell, the separator of the at least one battery cell is labeled with a radioactive isotope, and the at least one battery cell belongs to an energy storage device; Determine whether the at least one battery cell has a thermal runaway risk according to the first radiation intensity information and the reference radiation intensity information.

11. The method according to claim 10, characterized in that Also includes: Sending first information, wherein the first information is used to instruct an output device to output second information, and the second information is used to prompt that there is a risk of thermal runaway for the at least one battery cell.

12. The method according to claim 11, characterized in that The output device includes a human-machine interface HMI or a speaker associated with the vehicle where the energy storage device is located. The HMI belongs to the vehicle-mounted terminal of the vehicle or the smart terminal of the user using the vehicle.

13. The method according to any one of claims 10 to 12, characterized in that The obtaining of the first ray intensity information includes: Sensing a first radiation signal of the diaphragm of the at least one battery cell by a first detection unit among the at least one detection unit; The sensed first ray signal is converted into the first ray intensity information.

14. The method according to any one of claims 10 to 13, characterized in that Also includes: Acquiring second ray intensity information, wherein the second ray intensity information is used to indicate the intensity of a second ray signal of a separator of at least one battery cell; The determining, based on the first radiation intensity information and the reference radiation intensity information, whether the at least one battery cell has a thermal runaway risk specifically includes: Determine whether there is a thermal runaway risk for the at least one battery cell according to the first radiation intensity information, the second radiation intensity information, and the reference radiation intensity information.

15. The method according to claim 14, characterized in that The obtaining of the second ray intensity information includes: Sensing a second radiation signal of the diaphragm of the at least one battery cell by a second detection unit in the at least one detection unit; The sensed second ray signal is converted into the second ray intensity information.

16. The method according to any one of claims 13 to 15, characterized in that The at least one battery cell is arranged vertically in the energy storage device, and the positional relationship between the at least one detection unit and the at least one battery cell includes at least one of the following: The at least one detection unit is located on the top surface of the at least one battery cell; The at least one detection unit is located on the bottom surface of the at least one battery cell; or, The at least one detection unit is located on a side surface of the at least one battery cell.

17. The method according to any one of claims 13 to 16, characterized in that The energy storage device includes an outer frame, which is used to wrap the at least one battery core, and the at least one detection unit is located on the inner wall of the outer frame.

18. The method according to any one of claims 13 to 17, characterized in that The converting the sensed first ray signal into the first ray intensity information specifically includes: Converting the sensed first ray signal into third ray intensity information, wherein the third ray intensity information is in matrix form, and the dimension of the matrix corresponding to the third ray intensity information is M*N, where M and N are integers greater than or equal to 1; The third ray intensity information is converted into the first ray intensity information according to a sampling accuracy t, where t is an integer greater than or equal to 1.

19. The method according to claim 18, characterized in that The first ray intensity information is in matrix form, and the sampling accuracy t is specifically used to convert the M*N dimensional matrix corresponding to the third ray intensity information into an element enrichment matrix corresponding to the first ray intensity information, and the dimension of the element enrichment matrix is ​​[M / t, N / t].

20. The method according to any one of claims 10 to 19, characterized in that The determining, based on the first radiation intensity information and the reference radiation intensity information, whether the at least one battery cell has a thermal runaway risk specifically includes: Calculating a deformation amount of a diaphragm of each battery cell in the at least one battery cell according to the first ray intensity information and the reference ray intensity information; If there is a first battery cell among the at least one battery cell that meets the deformation condition, then there is a risk of thermal runaway for the at least one battery cell, wherein the deformation condition includes: the deformation of the diaphragm of the first battery cell is greater than or equal to the deformation threshold corresponding to the type of the first battery cell.

21. The method according to claim 20, characterized in that The reference radiation intensity information includes radiation intensity information of the at least one battery cell when it leaves the factory. The method further includes: determining a type of the at least one battery cell according to the reference ray intensity information; Obtain a deformation amount threshold corresponding to the type of the at least one battery cell.

22. The method according to any one of claims 10 to 21, characterized in that The radioactive isotopes include C14 or H3.

23. The method according to any one of claims 10 to 22, characterized in that The shape of each battery cell in the at least one battery cell includes any one of the following: a cylinder, a cube or a cuboid.

24. The method according to any one of claims 10 to 23, characterized in that The energy storage device is in any of the following forms: a battery pack or a battery module, and the energy storage device is integrated into the frame or chassis of the vehicle.

25. A control device, characterized in that: include: an acquiring unit, configured to acquire first ray intensity information, wherein the first ray intensity information is used to indicate the intensity of a first ray signal of a diaphragm of at least one battery cell, the diaphragm of the at least one battery cell being labeled with a radioactive isotope, and the at least one battery cell being an energy storage device; A determination unit is configured to determine whether the at least one battery cell has a thermal runaway risk based on the first ray intensity information and the reference ray intensity information.

26. A vehicle, characterized in that: The device comprises the energy storage device according to any one of claims 1 to 9.

27. A terminal device, characterized in that: comprising a processor coupled to a memory; The processor is configured to execute the computer program or instructions stored in the memory, so that the terminal device executes the method according to any one of claims 10 to 24.

28. A readable storage medium, characterized in that The method comprises a program or an instruction, and when the program or the instruction is executed, the method according to any one of claims 10 to 24 is performed.

29. A computer program product, characterized in that When the computer program product is run on a computer, the computer is caused to perform the method according to any one of claims 10 to 24.

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