A collection device, an electric core assembly, a battery pack, a battery pack, and an electric device

Abstract

The application relates to the technical field of batteries, and provides a collection device, a battery cell assembly, a battery pack, a battery pack and a power utilization equipment. The collection device comprises a collection assembly, the collection assembly comprises a circuit board and a core board for collecting and processing electric signals, the core board is arranged on the circuit board and is electrically connected with the circuit board; and a connecting assembly, one end of the connecting assembly is electrically connected with the circuit board, and the connecting assembly is used for being electrically connected with the battery cell assembly. The structure design of the collection device provided by the application is relatively simple, and the cost is relatively low.

Description

Technical Field

[0001] This application relates to the field of electronic components technology, and in particular to a data acquisition device, a cell assembly, a battery pack, a battery module, and an electrical device. Background Technology

[0002] Power batteries are a core component of new energy vehicles and their power source. Currently, power batteries require signal acquisition modules to collect parameters such as battery pressure and temperature.

[0003] In related technologies, the acquisition module includes a voltage acquisition device, which is generally used to acquire the voltage of the power battery. Specifically, the voltage acquisition device includes a connection terminal, an acquisition line, and a nickel plate set on the acquisition line. When the battery cell assembly is assembled into a module, the voltage acquisition device is electrically connected to the bus in the battery cell module through the nickel plate, thereby achieving the purpose of acquiring the battery cell voltage.

[0004] However, the acquisition module in the relevant technology has a relatively complex structure and high cost. Summary of the Invention

[0005] This application provides a data acquisition device, a battery cell assembly, a battery pack, a battery module, and an electrical device. The data acquisition device has a relatively simple structural design and low cost.

[0006] A first aspect of this application provides a data acquisition device, comprising at least:

[0007] The acquisition component includes a circuit board and a core board for electrical signal acquisition and processing, wherein the core board is disposed on the circuit board and electrically connected to the circuit board;

[0008] And a connecting component, one end of which is electrically connected to the circuit board, the connecting component being used for electrical connection with the battery cell assembly.

[0009] This application embodiment features a core board mounted on a circuit board for electrical signal acquisition and processing. Additionally, one end of a connecting component is electrically connected to the circuit board, and the connecting component is used to electrically connect to the battery cell assembly. In this way, the core board acquires and processes the electrical signals from the battery cell assembly through the circuit board and the connecting component. Each battery cell assembly can be sampled and processed independently. Compared to the prior art where the acquired signals are then connected to a battery information acquisition board via wiring harnesses for processing, resulting in a complex structure and frequent redesign of the battery information acquisition board, leading to high costs, the acquisition device in this application embodiment has a relatively simple structure and lower cost compared to the prior art.

[0010] In one possible implementation, the connection component is connected to the circuit board via a plug-in connection.

[0011] In one possible implementation, the connecting component has a first connector at one end near the circuit board, and the circuit board has a second connector at one end near the connecting component, the first connector and the second connector being plugged into each other.

[0012] In one possible implementation, the connection component is connected to the circuit board by soldering.

[0013] In one possible implementation, it further includes: a temperature sensing element; one end of the temperature sensing element is electrically connected to the connection assembly, and the other end of the temperature sensing element is used to connect to the battery cell assembly.

[0014] In one possible implementation, the connection component is provided with a plurality of electrical connection portions for electrically connecting with the cells in the cell assembly.

[0015] A second aspect of this application provides a battery cell assembly, comprising: a battery cell group and any of the above-described data acquisition devices;

[0016] The battery cell assembly includes multiple battery cells, and the connection component of the acquisition device is electrically connected to the battery cells. The acquisition component of the acquisition device is used to acquire and process the signals from the battery cells.

[0017] By incorporating the aforementioned acquisition device into the battery cell assembly, the embodiments of this application can acquire and process the signals of each battery cell in the assembly, thereby improving the performance of the battery cell assembly.

[0018] In one possible implementation, the connection component is provided with a plurality of electrical connection portions, which are electrically connected to at least a portion of the battery cells.

[0019] In one possible implementation, a plurality of the battery cells are sequentially electrically connected along a first direction to form a battery cell string, the plurality of battery cell strings are arranged along a second direction, the connecting component extends along the first direction and fits against one side of the battery cell group along a third direction, and the first direction, the second direction and the third direction intersect each other.

[0020] In one possible implementation, multiple battery cell strings are electrically connected end-to-end.

[0021] In one possible implementation, at least one end of the battery cell is provided with a groove, and the acquisition device further includes a temperature sensing element; one end of the temperature sensing element is electrically connected to the connection assembly, and the other end of the temperature sensing element is connected to the groove.

[0022] In one possible implementation, an electrical connector is also included, wherein the battery cell includes an electrode portion, and the electrical connector electrically connects the acquisition component and the electrode portion.

[0023] In one possible implementation, the electrical connector includes a connector body, a portion of which is bent toward the acquisition component to form a first connection portion electrically connected to the acquisition component; and / or a portion of the connector body is bent toward the electrode portion to form a second connection portion electrically connected to the electrode portion.

[0024] In one possible implementation, it further includes: a fixing component; the fixing component is disposed on one end of the battery cell assembly, and the circuit board is connected to the fixing component.

[0025] In one possible implementation, the fixing component includes a fixing bracket and a fixing part connected to the fixing bracket, wherein the circuit board is connected to the fixing part by fasteners.

[0026] In one possible implementation, the electrical connector has a through hole, through which the fixing part passes.

[0027] A third aspect of this application provides a battery pack comprising one or more of the aforementioned cell assemblies.

[0028] The embodiments of this application can improve the performance of the battery pack by setting the above-mentioned cell assembly in the battery pack.

[0029] In one possible implementation, the core boards of two adjacent cell assemblies are electrically connected via a first connector.

[0030] A fourth aspect of this application provides a battery pack, including a battery tray and any of the above-described cell assemblies or battery packs;

[0031] At least a portion of the cell assembly or at least a portion of the battery pack is located within the battery tray.

[0032] The embodiments of this application can improve the performance of the battery pack by setting the above-mentioned cell assembly or battery pack in the battery pack.

[0033] The fifth aspect of this application provides an electrical device comprising at least: any of the above-described cell assemblies, any of the above-described battery packs, or any of the above-described battery modules.

[0034] The embodiments of this application can improve the performance of electrical equipment by incorporating the aforementioned battery cell assembly, battery pack, or battery module into the electrical equipment. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the data acquisition device provided in the embodiments of this application;

[0037] Figure 2 This is a schematic diagram of the structure of the battery cell assembly provided in the embodiments of this application;

[0038] Figure 3 This is a schematic diagram of the structure of multiple battery cells in a battery cell assembly provided in an embodiment of this application;

[0039] Figure 4 This is a partial structural schematic diagram of the data acquisition device provided in an embodiment of this application;

[0040] Figure 5 This is a schematic diagram of the structure of the acquisition component and the connection component in the acquisition device provided in the embodiments of this application;

[0041] Figure 6 Another structural schematic diagram of the acquisition component and connection component in the acquisition device provided in the embodiments of this application;

[0042] Figure 7 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0043] Figure 8 This is a schematic diagram of the battery pack provided in an embodiment of this application.

[0044] Figure label:

[0045] 100 - Data Acquisition Device;

[0046] 110 - Acquisition Component;

[0047] 111-Circuit board; 1111-Second connector; 112-Core board;

[0048] 120 - Connecting components;

[0049] 121 - First connector; 122 - Electrical connection part;

[0050] 130 - Temperature sensing element;

[0051] 200-cell assembly;

[0052] 210 - Cell assembly; 211 - Cell; 2111 - Electrode section;

[0053] 212-cell string;

[0054] 213 - Groove;

[0055] 220 - Electrical connectors;

[0056] 221 - Connector body; 222 - First connecting part; 223 - Second connecting part;

[0057] 230 - Fixed components;

[0058] 231-Fixed bracket; 232-Fixing part;

[0059] 240 - Fasteners;

[0060] 300-battery pack;

[0061] 310 - First connector;

[0062] 320 - Second connector;

[0063] 400-battery pack;

[0064] 410 - Battery tray;

[0065] L1 - First direction;

[0066] L2 - Second direction;

[0067] L3 - Third-party orientation. Detailed Implementation

[0068] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0069] With the development of new energy sources, more and more fields are adopting new energy sources as power sources. Due to their advantages such as high energy density, rechargeability, safety, and environmental friendliness, power batteries are widely used in new energy vehicles, consumer electronics, energy storage systems, and other fields.

[0070] Power batteries are a core component of new energy vehicles and their power source. Currently, power batteries require electrical signal acquisition modules to collect parameters such as battery pressure and temperature.

[0071] With the electrification of the automotive industry, the usage and types of electronic components have increased rapidly. Due to the differences in operating conditions, the types of electrical signal acquisition modules used are also diverse, which increases development costs and is not conducive to standardized design.

[0072] In related technologies, the acquisition module includes a voltage acquisition device, which is generally used to acquire the voltage of the power battery. Specifically, the voltage acquisition device includes connecting terminals, acquisition lines, and nickel plates mounted on the acquisition lines. When the battery cell assembly is assembled into a module, the voltage acquisition device is electrically connected to the busbar in the battery cell module through the nickel plates, thereby achieving the purpose of acquiring the battery cell voltage. However, the structure of the above acquisition module is relatively complex and the cost is high.

[0073] To address the aforementioned problems, embodiments of this application provide a novel data acquisition device, a battery cell assembly, a battery pack, a battery module, and an electrical device. The data acquisition device includes a data acquisition component, which comprises a circuit board and a core board for electrical signal acquisition and processing. The core board is mounted on the circuit board and electrically connected to it. A connecting component is also included, with one end electrically connected to the circuit board and used for electrical connection to the battery pack. The data acquisition device provided in this application has a relatively simple structural design and low cost. Furthermore, the data acquisition device provided in this application facilitates standardized design.

[0074] The following detailed description, in conjunction with the accompanying drawings, describes the data acquisition device provided in the embodiments of this application, as well as the cell assembly, battery pack, battery module, and electrical equipment having the data acquisition device.

[0075] Figure 1 This is a schematic diagram of the acquisition device provided in the embodiments of this application. Figure 2 This is a schematic diagram of the structure of the battery cell assembly provided in an embodiment of this application. Figure 3 This is a schematic diagram of the structure of multiple battery cells in a battery cell assembly provided in an embodiment of this application. Figure 4 This is a partial structural schematic diagram of the data acquisition device provided in an embodiment of this application.

[0076] Reference Figures 1 to 4 As shown, this application embodiment provides a data acquisition device 100, which may include at least a data acquisition component 110 and a connection component 120, wherein, as Figure 4 As shown, the acquisition component 110 may include a circuit board 111 and a core board 112. The core board 112 is used for electrical signal acquisition and processing. The core board 112 is disposed on the circuit board 111 and electrically connected to the circuit board 111. One end of the connection component 120 is electrically connected to the circuit board 111, and the connection component 120 is used for electrical connection to the battery cell assembly 210.

[0077] By setting a core board 112 on the circuit board 111, the core board 112 is used for electrical signal acquisition and processing. In addition, one end of the connecting component 120 is electrically connected to the circuit board 111 and the connecting component 120 is used for electrical connection with the battery cell assembly 210. In this way, the core board 112 can acquire and process the electrical signals of the battery cell assembly 210 through the circuit board 111 and the connecting component 120.

[0078] The acquisition device 100 in this embodiment can independently acquire and process voltage and temperature signals of each cell 211 in the cell group 210, which is beneficial for achieving standardized design. Each cell group 210 can be sampled and processed independently. Compared with the prior art, which collects data and then connects it to a battery information acquisition board for processing via wiring harness, resulting in a complex structure and frequent redesign of the battery information acquisition board, leading to high costs, the acquisition device 100 in this embodiment has a relatively simple structural design and lower cost compared to the prior art.

[0079] In addition, the acquisition device 100 in this application embodiment can be adapted to multiple different battery cell groups 210 by adjusting the connection component 120. In this application embodiment, if the core board 112 is used and only the connection component 120 is changed to adapt to multiple battery cell groups 210, a lot of development costs can be saved.

[0080] It is understood that this application embodiment abandons the communication method in which each cell group in the battery pack is connected to the battery management system board one by one in the related technology. In this application embodiment, the acquisition device 100 is selected according to the number of communication channels required by the cell group 210. The external structure of the circuit board 111 can be appropriately adjusted to meet the connection of the connection component 120 and the fixation of the acquisition device 100. The core board 112 in the acquisition device 100 integrates the chips and various core components required for electrical signal acquisition and processing. The core board 112 can be commonly used as a general component and soldered onto the circuit board 111. The core board 112 is applicable to multiple products.

[0081] In addition, the core board 112 and the connection component 120 can be connected in the circuit board 111 via a printed circuit board. Specifically, the circuit board 111 can have multiple electrical connection parts 122 that connect the core board 112 and the connection component 120 via a printed circuit board, thereby realizing the electrical connection between the core board 112 and the connection component 120.

[0082] It is understood that, in this embodiment of the application, the number of communication channels required by the battery cell group 210 refers to the number of battery cells 211 in the battery cell group 210 and the number of detection targets required for each battery cell 211. For example, if there are six battery cells 211, and all six battery cells 211 need to have their voltage and temperature detected, then the number of communication channels is twelve. Six of these twelve communication channels are used to detect the voltage of the six battery cells 211, and the remaining six of these twelve communication channels are used to detect the temperature of the six battery cells 211.

[0083] It is understood that in the embodiments of this application, the connecting component 120 can be a data acquisition line. Specifically, the connecting component 120 can be a flexible line with various etching or die-cutting processes, such as a flat flexible cable (FFC), a flexible printed circuit (FPC), or various data acquisition wires.

[0084] It's important to note that FFC typically refers to flexible circuit boards using flexible flat cables. These boards are widely used in electronic devices, especially in applications requiring space and weight savings, such as laptops, smartphones, printers, and other consumer electronics. Flexible printed circuit boards (FPCs) are circuit boards made from flexible substrates and are widely used in electronic devices that demand flexibility and space efficiency. FPCs differ from FFCs; FPCs typically refer to circuit boards with etched circuit patterns onto flexible materials, while FFCs refer to pre-fabricated flat cables.

[0085] Figure 5 This is a schematic diagram of the structure of the acquisition component 110 and the connection component 120 in the acquisition device 100 provided in the embodiments of this application. Figure 6 This is another structural schematic diagram of the acquisition component 110 and the connection component 120 in the acquisition device 100 provided in the embodiments of this application.

[0086] In some embodiments, the connection component 120 and the circuit board 111 can be connected by a plug-in connection.

[0087] Specifically, such as Figure 5 As shown in the embodiment of this application, the end of the connecting component 120 near the circuit board 111 has a first plug 121, and the end of the circuit board 111 near the connecting component 120 has a second plug 1111. The first plug 121 and the second plug 1111 are plugged into each other to realize the plug-in connection between the connecting component 120 and the circuit board 111.

[0088] In this embodiment, a first connector 121 and a second connector 1111 can be soldered and integrated onto the circuit board 111. This allows the connection assembly 120 to be connected to the core board 112 on the circuit board 111 via the first connector 121 and the second connector 1111. A fuse can be integrated into the connection assembly 120, making it easier to replace when a short circuit occurs, thus preventing it from being scrapped along with the core board 112 on the circuit board 111. This design effectively saves costs.

[0089] Of course, the connecting component 120 and the circuit board 111 can also be connected by other connection methods. This application embodiment does not limit this, nor is it limited to the above example.

[0090] Alternatively, in some other embodiments, such as Figure 6 As shown, the connecting component 120 and the circuit board 111 can be connected by soldering. By soldering the connecting component 120 onto the circuit board 111, the connecting component 120 and the circuit board 111 become an integral structure, which increases the connection strength between the connecting component 120 and the circuit board 111, thereby increasing the overall structural strength of the acquisition device 100.

[0091] In addition, the connection component 120 is connected to the circuit board 111 by soldering. Compared with the design of a plug-in structure, a set of plug-in plugs can be saved, which can further reduce costs.

[0092] like Figure 6 As shown in the embodiments of this application, the acquisition device 100 may further include a temperature detection element 130, wherein one end of the temperature detection element 130 is electrically connected to the connection component 120, and the other end of the temperature detection element 130 may be used to connect to the battery cell assembly 210.

[0093] In one possible implementation, the temperature sensing element 130 may be bonded to the surface of the cell assembly 210.

[0094] In this embodiment of the application, the connection component 120 may be provided with a plurality of electrical connection parts 122, which are used to electrically connect with the battery cells 211 in the battery cell group 210.

[0095] like Figure 2 and Figure 3 As shown, this application embodiment also provides a battery cell assembly 200, which may include: a battery cell group 210 and the above-mentioned acquisition device 100. The battery cell group 210 may include a plurality of battery cells 211. The connection component 120 of the acquisition device 100 is electrically connected to the battery cells 211. The acquisition component 110 of the acquisition device 100 is used to acquire and process the signals of the battery cells 211.

[0096] In this embodiment of the application, the connection component 120 may be provided with a plurality of electrical connection parts 122, and the plurality of electrical connection parts 122 are electrically connected to at least a portion of the battery cells 211.

[0097] Specifically, after the battery cells 211 are assembled, the data acquisition device 100 is placed on one side of the battery cell assembly 210. Multiple electrical connection parts 122 in the connection component 120 of the data acquisition device 100 can be electrically connected to at least some of the battery cells 211 in the battery cell assembly 210 by means of welding, riveting, etc., so as to complete the acquisition of parameters such as voltage and temperature of each battery cell 211.

[0098] By installing the aforementioned acquisition device 100 in the battery cell assembly 200, the signals of the battery cell 211 in the battery cell assembly 200 can be acquired and processed, thereby improving the performance of the battery cell assembly 200.

[0099] In the embodiments of this application, such as Figure 2 As shown, multiple battery cells 211 can be electrically connected sequentially along the first direction L1 to form a battery cell string 212. The multiple battery cell strings 212 are arranged along the second direction L2. The connecting component 120 extends along the first direction L1 and is attached to one side of the battery cell group 210 along the third direction L3.

[0100] Among them, the first direction L1, the second direction L2, and the third direction L3 intersect each other.

[0101] Additionally, it is understandable that multiple battery cells connected in series 212 can be electrically connected end to end.

[0102] In this embodiment of the application, at least one end of the battery cell 211 may be provided with a groove 213 (see Figure 4 As shown, the acquisition device 100 may also include a temperature detection element 130, wherein one end of the temperature detection element 130 may be electrically connected to the connection component 120, and the other end of the temperature detection element 130 may be connected to the groove 213.

[0103] In some embodiments, such as Figure 4 As shown, the battery cell assembly 200 may also include an electrical connector 220, and the battery cell 211 may include an electrode portion 2111. The electrical connector 220 is electrically connected to the acquisition assembly 110 and the electrode portion 2111.

[0104] It is understood that the electrode portion 2111 can be a tab or a post, etc., and the embodiments of this application do not limit it in this regard.

[0105] Continue to refer to Figure 4As shown in the embodiment of this application, the electrical connector 220 may include a connector body 221. A portion of the connector body 221 is bent toward the acquisition component 110 to form a first connecting portion 222, which is electrically connected to the acquisition component 110. A portion of the connector body 221 is bent toward the electrode portion 2111 to form a second connecting portion 223, which is electrically connected to the electrode portion 2111.

[0106] In the embodiments of this application, reference is made to Figure 4 As shown, the battery cell assembly 200 may further include a fixing component 230, which may be disposed on one end of the battery cell assembly 210, and the circuit board 111 may be connected to the fixing component 230.

[0107] Specifically, continue to refer to, for example Figure 4 As shown in the embodiment of this application, the fixing component 230 may include: a fixing bracket 231 and a fixing part 232 connected to the fixing bracket 231, wherein the circuit board 111 can be connected to the fixing part 232 by fasteners 240.

[0108] For example, the circuit board 111 may be connected to the fixing part 232 of the fixing component 230 by fasteners 240 such as bolts or rivets.

[0109] In this embodiment of the application, the electrical connector 220 may be provided with a through hole (not shown in the figure), and the fixing part 232 may be provided through the through hole.

[0110] Figure 7 This is a schematic diagram of the battery pack provided in an embodiment of this application.

[0111] like Figure 7 As shown in the figure, this application embodiment also provides a battery pack 300, which may include one or more of the above-described cell assemblies 200.

[0112] The battery pack 300 in this embodiment adopts an independent acquisition device 100, which has advantages such as compact structure, high acquisition channel utilization, and short development cycle of core board 112. The independent acquisition device 100 can be directly fixed on the bracket of the battery pack 300 to be acquired, or it can be centrally placed in the battery pack. This embodiment does not limit this.

[0113] By incorporating the aforementioned cell assembly 200 into the battery pack 300, the performance of the battery pack 300 can be improved.

[0114] In this embodiment of the application, the core boards 112 of two adjacent cell components 200 can be electrically connected through the first connector 310, thus realizing the electrical connection between multiple cell components 200 in the battery pack 300.

[0115] Specifically, in this embodiment of the application, the core board 112 of the acquisition device 100 in two adjacent battery cell assemblies 200 can be electrically connected through the first connector 310.

[0116] In addition, it is understood that after two adjacent cell components 200 are electrically connected through the first connector 310, any cell component 200 in the battery pack 300 can lead out the second connector 320. The second connector 320 can be used to electrically connect with a power supply device or other external devices, thereby realizing the electrical connection between the battery pack 300 and the power supply device or other external devices.

[0117] In some embodiments, the first connector 310 and the second connector 320 may be, for example, communication lines.

[0118] In this embodiment of the application, after the battery pack 300 is assembled, the battery cells 200 are connected in series through the first connector 310, and a main communication harness (i.e., the second connector 320) is led out from one of the battery cells 200. The first connector 310 can be used to connect adjacent battery cells 200 by means of connectors or welding. Similarly, the main communication harness can also be connected by means of connectors or welding. This embodiment of the application does not limit this, nor is it limited to the above example.

[0119] By designing the battery pack 300, the electrical signal acquisition and processing methods of each cell component 200 in the battery pack 300 are designed independently and modularly. After the battery pack 300 is assembled, the cell components 200 communicate in series, thereby completing the acquisition and communication of the entire battery pack 300.

[0120] Figure 8 This is a schematic diagram of the battery pack provided in an embodiment of this application.

[0121] This application embodiment also provides a battery pack 400, which may include at least a battery tray 410 and the aforementioned cell assembly 200 or the aforementioned battery pack 300, wherein at least a portion of the cell assembly 200 or at least a portion of the battery pack 300 may be located within the battery tray 410.

[0122] In some embodiments, see Figure 8 As shown, the battery pack 400 may include a battery tray 410 and a battery pack 300, with at least a portion of the battery pack 300 located within the battery tray 410.

[0123] By incorporating the aforementioned cell assembly 200 and battery pack 300 into the battery pack 400, the performance of the battery pack 400 can be improved.

[0124] In addition, this application embodiment also provides an electrical device, which may include at least the above-mentioned cell assembly 200, battery pack 300, or battery stack 400.

[0125] The electrical equipment of the present invention can be conventional electrical equipment in the art, such as power equipment (e.g., electric vehicles), electronic equipment (e.g., computers, mobile phones, digital cameras, printers, fax machines, etc.), wearable devices (e.g., watches, wristbands, VR glasses, etc.), and home appliances (e.g., air conditioners, refrigerators, washing machines, microwave ovens, etc.), etc., and there are no particular limitations.

[0126] Taking a vehicle as an example, the vehicle can be a sedan, bus, or truck. For instance, the vehicle can be an electric vehicle (EV), a pure electric vehicle / battery electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle, or any vehicle equipped with a battery.

[0127] The vehicle may also include a body, an axle, and a motor, wherein the battery pack 400, the axle, and the motor may all be mounted on the body. The battery pack 400 may be electrically connected to the motor, and the motor may be connected to the axle. The battery pack 400 provides power to the motor, enabling it to rotate. During rotation, the motor drives the axle to rotate, thereby allowing the vehicle to move.

[0128] The vehicle body may include a vehicle chassis and a body mounted on the chassis. The body may have a passenger compartment, which may include a driver's seat, passenger seats, etc., where the driver can operate the vehicle. For example, the vehicle body may also include structural components such as a steering wheel, clutch, and brakes to enable the vehicle to perform its full functions; this application does not impose any limitations on these components.

[0129] By incorporating the aforementioned cell assembly 200, battery pack 300, or battery stack 400 into electrical equipment, the performance of the electrical equipment can be improved.

[0130] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0131] In the description of this invention, it should be understood that the terms “may include” and “have” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0132] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery cell assembly, characterized in that, include: Battery cell assembly and data acquisition device; The data acquisition device includes at least: The acquisition component includes a circuit board and a core board for electrical signal acquisition and processing, wherein the core board is soldered onto the circuit board and electrically connected to the circuit board. And a connecting component, one end of which is electrically connected to the circuit board, the connecting component being used for electrical connection with the battery cell assembly; The battery cell assembly includes multiple battery cells, and the connection component of the acquisition device is electrically connected to the battery cells. The acquisition component of the acquisition device is used to acquire and process the signals from the battery cells. At least one of the battery cells has a groove at one end, and the acquisition device further includes a temperature detection element; one end of the temperature detection element is electrically connected to the connection assembly, and the other end of the temperature detection element is connected to the groove; It also includes an electrical connector, wherein the battery cell includes an electrode portion, and the electrical connector electrically connects the acquisition component and the electrode portion; The electrical connector includes a connector body, a portion of which is bent toward the acquisition component to form a first connection portion, which is electrically connected to the acquisition component; a portion of the connector body is bent toward the electrode portion to form a second connection portion, which is electrically connected to the electrode portion; the connector body and the second connection portion are arranged along a third direction, and the first connection portion is arranged along a first direction. Multiple battery cells are sequentially electrically connected along a first direction to form a battery cell string, and the multiple battery cell strings are arranged along a second direction. The connecting component extends along the first direction and is attached to one side of the battery cell group along a third direction. The first direction, the second direction, and the third direction intersect each other.

2. The cell assembly according to claim 1, characterized in that, The connecting component is connected to the circuit board via a plug-in connection.

3. The cell assembly according to claim 2, characterized in that, The connecting component has a first connector at one end near the circuit board, and the circuit board has a second connector at one end near the connecting component, wherein the first connector and the second connector are connected to each other.

4. The cell assembly according to claim 1, characterized in that, The connecting component is connected to the circuit board by soldering.

5. The cell assembly according to any one of claims 1-4, characterized in that, Also includes: Temperature sensing element; one end of the temperature sensing element is electrically connected to the connecting assembly, and the other end of the temperature sensing element is used to connect to the battery cell assembly.

6. The cell assembly according to any one of claims 1-4, characterized in that, The connection component is provided with a plurality of electrical connection parts, which are used to electrically connect with the battery cells in the battery cell group.

7. The cell assembly according to claim 1, characterized in that, The connection component is provided with a plurality of electrical connection parts, and the plurality of electrical connection parts are electrically connected to at least a portion of the battery cells.

8. The cell assembly according to claim 1, characterized in that, Multiple battery cell strings are connected end-to-end in an electrical connection.

9. The cell assembly according to any one of claims 1-4 and 7-8, characterized in that, Also includes: A fixing component is provided on one end of the battery cell assembly, and the circuit board is connected to the fixing component.

10. The cell assembly according to claim 9, characterized in that, The fixing component includes a fixing bracket and a fixing part connected to the fixing bracket, and the circuit board is connected to the fixing part by fasteners.

11. The cell assembly according to claim 10, characterized in that, The electrical connector has a through hole, and the fixing part passes through the through hole.

12. A battery pack, characterized in that, include: One or more of the battery cell assemblies according to any one of claims 1-11 above.

13. The battery pack according to claim 12, characterized in that, The core boards of two adjacent battery cell assemblies are electrically connected through a first connector.

14. A battery pack, characterized in that, include: The battery tray and the cell assembly as described in any one of claims 1-11 or the battery pack as described in claim 12 or 13; At least a portion of the cell assembly or at least a portion of the battery pack is located within the battery tray.

15. An electrical appliance, characterized in that, At least including: The cell assembly according to any one of claims 1-11, the battery pack according to claim 12 or 13, or the battery pack according to claim 14.

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