Battery pack and electric device

Abstract

The utility model discloses a kind of battery pack and electrical equipment, battery pack includes: connecting component, the connecting component includes: connecting line;Shell, the shell includes: tray and cover plate, the cover plate is covered on the tray, first wire hole is provided in the cover plate, the connecting line is set in the first wire hole. By integrating connecting line in cover plate, so it can reduce the connecting line fixed structure of battery pack and electrical equipment, can increase the reliability and integrity of connecting line arrangement, while it can shorten the assembly process of battery pack and electrical equipment, in addition, it can reduce the space occupancy amount of connecting line, improve the space utilization of battery pack and electrical equipment, while it can play the role of hiding and protection to connecting line.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a battery pack and electrical equipment. Background Technology

[0002] In related technologies, a battery pack includes a housing and at least one battery pack. Each battery pack includes at least one core. The housing has a receiving cavity, and the core is located in the receiving cavity. An electrical connection piece is connected to the core. The receiving cavity has a connecting wire mounting piece and an electrical connector on its side wall facing the electrical connection piece. The connecting wire mounting piece is used to install a sampling connection line, and the electrical connector connects the electrical connection piece and the sampling connection line.

[0003] However, existing battery packs also have significant drawbacks: the long connecting wires require brackets, wire channels and other fixing structures to be set inside or outside the battery pack, which not only takes up space but also affects assembly efficiency. In addition, the exposed connecting wires are also at risk of aging, corrosion and rodent bites. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery pack that can increase the reliability and integrity of the wiring arrangement, shorten the assembly process of the battery pack and the electrical equipment, and provide concealment and protection for the wiring.

[0005] This utility model further proposes an electrical device.

[0006] The battery pack according to this utility model includes: a connecting component, the connecting component including: a connecting wire; a housing, the housing including: a tray and a cover plate, the cover plate covering the tray, the cover plate having a first through hole, and the connecting wire disposed in the first through hole.

[0007] According to the present invention, by integrating the connecting wires into the cover plate, the fixing structure of the connecting wires between the battery pack and the electrical equipment can be reduced, the reliability and integrity of the connecting wire arrangement can be increased, the assembly process of the battery pack and the electrical equipment can be shortened, the space occupied by the connecting wires can be reduced, the space utilization rate of the battery pack and the electrical equipment can be improved, and the connecting wires can be hidden and protected.

[0008] In some examples of this utility model, the cover plate includes: a first composite material layer and a second composite material layer, the first composite material layer being disposed on the side of the second composite material layer away from the tray, and the first through hole being defined between the first composite material layer and the second composite material layer.

[0009] In some examples of this utility model, the first composite material layer is a metal material layer or a polymer-based composite material layer, and the second composite material layer is a metal material layer or a polymer-based composite material layer.

[0010] In some examples of this invention, the connecting line is also disposed on the surface of the cover plate adjacent to the tray.

[0011] In some examples of this utility model, the connecting component further includes: a connector connected to the end of the connecting line, the connector being disposed on the cover plate; or the connector being disposed on the edge of the cover plate; or the connecting line extending out of the edge of the cover plate, the connector being connected to the end of the extended connecting line.

[0012] In some examples of this utility model, the battery pack further includes: a battery pack disposed within the tray, the battery pack comprising: a core, a side plate, an end cap, a separator, and a pull plate, the side plate being disposed on both sides of the core, the end cap being disposed on both end faces of the core, the separator being disposed between two adjacent cores, and the pull plate being connected to the side plate and the separator respectively. The connecting assembly further includes: a copper busbar, the connecting wire and the copper busbar being disposed at at least one of the side plate, the end cap, and the separator.

[0013] In some examples of this utility model, at least one of the side plate, the end cap, and the partition is provided with a second through hole, and the connecting wire and the copper busbar are disposed in the second through hole; or the connecting wire and the copper busbar are disposed on the inner surface of at least one of the side plate, the end cap, and the partition; or the connecting wire and the copper busbar are disposed on the outer surface of at least one of the side plate, the end cap, and the partition.

[0014] In some examples of this utility model, the end of the copper busbar is provided with bolt holes, threads, or high-voltage connectors.

[0015] In some examples of this utility model, the connecting assembly further includes a connector and a bridging element. The connector is connected to the end of the connecting line. When connectors are provided at the ends of adjacent side plates, the ends of end caps, and the ends of partitions, the two connectors can be electrically connected through the bridging element.

[0016] The electrical equipment according to this utility model includes: the battery pack described above.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of a battery pack according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the first part of the battery pack according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the second part of the battery pack according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the third part of the battery pack according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the fourth part of the battery pack according to an embodiment of the present utility model; Figure 6 This is an exploded view of the battery pack.

[0019] Figure label: 1. Battery pack; 10. Connecting component; 100. Connecting wire; 101. Connector; 102. Copper busbar; 103. Bridging component; 20. Housing; 200. Tray; 201. Cover plate; 202. First through hole; 203. First composite material layer; 204. Second composite material layer; 30. Battery pack; 300. Core; 301. Side plate; 302. End cap; 303. Separator; 304. Pull plate. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0021] The following is for reference. Figures 1-6 The battery pack 1 according to an embodiment of the present utility model is described.

[0022] like Figure 1 and Figure 5 As shown, the battery pack 1 according to an embodiment of the present invention includes: a connecting component 10 and a housing 20. The connecting component 10 can serve as a connector, and the housing 20 can provide physical protection for the internal components, preventing mechanical damage, dust, moisture, etc., while also fixing and supporting the internal components.

[0023] like Figures 1-3As shown, the connecting assembly 10 includes a connecting wire 100, and the housing 20 includes a tray 200 and a cover plate 201. The cover plate 201 covers the tray 200, and a first through hole 202 is provided in the cover plate 201. The connecting wire 100 is disposed in the first through hole 202. The connecting wire 100 can serve as a connector, used for interconnection between battery packs 30, and also for connecting the battery pack 1 to electrical equipment. The tray 200 and the cover plate 201 are components of the housing 20. The tray 200 can support and install components such as the battery pack 30 and the cover plate 201. The cover plate 201 can provide insulation, load-bearing, sealing, and mechanical protection. When the cover plate 201 covers the tray 200, the housing 20 forms a sealed space, which can protect the internal battery pack 30 from dust and water, and also provide mechanical protection. The first through hole 202 can be used for... A connecting wire 100 is installed inside the first through hole 202. This allows the connecting wire 100 to be integrated into the cover plate 201, reducing the need for fixing structures such as fixing slots, brackets, and cable ties for the connecting wire 100 between the battery pack 1 and the electrical equipment. This increases the reliability and overall integrity of the connecting wire arrangement, shortens the assembly process of the battery pack 1 and the electrical equipment, reduces the space occupied by the connecting wire 100, improves the space utilization of the battery pack 1 and the electrical equipment, and also provides concealment and protection for the connecting wire 100. It should be noted that the connecting wire 100 can be a connecting wire 100 inside the battery pack 1, a connecting wire 100 between the battery pack 1 and the electrical equipment, or a connecting wire 100 inside the electrical equipment. The connecting wire 100 can be a high-voltage connecting wire 100 or a low-voltage connecting wire 100. The number and arrangement of the connecting wires 100 can be determined by the connection requirements of the electrical equipment and the connecting wires 100 of the battery pack 1. The connecting wire 100 can be single-strand or multi-strand. The connecting wire 100 can be an uncoated metal core, an enameled wire, a connecting wire 100 with an insulation layer, a connecting wire 100 with a shielding layer, a connecting wire 100 with a fireproof layer, or a combination of multiple types. The cover plate 201 can be set as a flat or irregular structure according to the structural dimensions of the battery pack 1.

[0024] Therefore, by integrating the connecting wire 100 into the cover plate 201, the fixing structure of the connecting wire 100 between the battery pack 1 and the electrical equipment can be reduced, the reliability and integrity of the arrangement of the connecting wire 100 can be increased, the assembly process of the battery pack 1 and the electrical equipment can be shortened, the space occupied by the connecting wire 100 can be reduced, the space utilization of the battery pack 1 and the electrical equipment can be improved, and the connecting wire 100 can be hidden and protected.

[0025] Specifically, such as Figure 3As shown, the cover plate 201 includes a first composite material layer 203 and a second composite material layer 204. The first composite material layer 203 is disposed on the side of the second composite material layer 204 away from the tray 200, and a first through hole 202 is defined between the first composite material layer 203 and the second composite material layer 204. The first composite material layer 203 and the second composite material layer 204 are components of the cover plate 201, both of which can perform functions such as insulation, load-bearing, sealing, and mechanical protection. The first composite material layer 203 is disposed on the side of the second composite material layer 204 away from the tray 200, at which time the first composite material layer 203 and the second composite material layer 204 form a whole, which facilitates the installation and setting of the cover plate 201. The first through hole 202 is defined between the first composite material layer 203 and the second composite material layer 204, and the first through hole 202 can be used to install the connecting wire 100. The wiring 100 is located inside the first through hole 202. This allows the wiring 100 to be integrated into the cover plate 201, which reduces the need for fixing structures for the wiring 100 between the battery pack 1 and the electrical equipment, such as wiring 100 fixing slots, brackets, and cable ties. This increases the reliability and overall integrity of the wiring 100 arrangement, shortens the assembly process of the battery pack 1 and the electrical equipment, reduces the space occupied by the wiring 100, improves the space utilization of the battery pack 1 and the electrical equipment, and also provides concealment and protection for the wiring 100.

[0026] Among them, such as Figure 3 As shown, the first composite material layer 203 is either a metal material layer or a polymer-based composite material layer, and the second composite material layer 204 is either a metal material layer or a polymer-based composite material layer. Metal material layers offer advantages such as high strength and rigidity, excellent heat dissipation, high protection, and sealing performance. Polymer-based composite material layers offer advantages such as significant weight reduction, excellent specific strength and specific stiffness, and strong corrosion resistance. By setting both the first composite material layer 203 and the second composite material layer 204 as either metal material layers or polymer-based composite material layers, the first composite material layer 203 and the second composite material layer 204 better suit actual working conditions and can provide insulation, load-bearing, sealing, and mechanical protection. It should be noted that both the first composite material layer 203 and the second composite material layer 204 can be single-layered or multi-layered.

[0027] Furthermore, the connecting wire 100 is also disposed on the surface of the cover plate 201 adjacent to the tray 200. The connecting wire 100 can be disposed between the first composite material layer 203 and the second composite material layer 204 according to the connection requirements of the battery pack 1 and the electrical equipment, or it can be fixedly integrated into the surface of the cover plate 201 adjacent to the tray 200. This reduces the need for fixing structures for the connecting wire 100 between the battery pack 1 and the electrical equipment, such as fixing grooves, brackets, and cable ties, increasing the reliability and overall integrity of the connecting wire arrangement. It also shortens the assembly process of the battery pack 1 and the electrical equipment, reduces the space occupied by the connecting wire 100, improves the space utilization of the battery pack 1 and the electrical equipment, and provides concealment and protection for the connecting wire 100. Alternatively, depending on the connection requirements of the battery pack 1 and the electrical equipment, the connecting wire 100 can also be disposed on the surface of the cover plate 201 away from the tray 200.

[0028] Of course, such as Figures 1-3 As shown, the connecting component 10 further includes: a connector 101, which is connected to the end of the connecting line 100. The connector 101 is disposed on the cover plate 201, or the connector 101 is disposed on the edge of the cover plate 201, or the connecting line 100 extends out of the edge of the cover plate 201, and the connector 101 is connected to the end of the extended connecting line 100. Connector 101 serves functions such as power transmission, signal communication, modular assembly, and safety isolation. Connector 101 is attached to the end of connecting line 100, enabling modular, detachable, and highly reliable electrical connections. Depending on the connection requirements of the battery pack 1 and the connecting line 100 of the electrical equipment, connector 101 can be located in the middle or edge area of ​​cover plate 201. It can be installed on the edge of cover plate 201 or remotely connected to the end of connecting line 100 extending from cover plate 201. Placing connector 101 on cover plate 201 enables high integration and improves sealing. Placing connector 101 on the edge of cover plate 201 facilitates connection between battery pack 1 and electrical equipment as well as adjacent modules, saves space on cover plate 201, and facilitates insertion, removal, and maintenance. Attaching connector 101 to the end of the extending connecting line 100 provides high flexibility, reduces the complexity of cover plate 201, and facilitates connector 101 replacement. It should be noted that connector 101 can be a cold-pressed terminal, a sheathed connector, a bare metal connecting wire 100 segment, etc. The type and structure of connector 101 can be determined by the connection requirements of battery pack 1 and electrical equipment connecting wire 100.

[0029] Furthermore, such as Figures 4-6As shown, the battery pack 1 also includes a battery pack 30, which is disposed in the tray 200. The battery pack 30 includes a core 300, a side plate 301, an end cover 302, a separator 303, and a pull plate 304. The battery pack 30 can provide higher voltage, larger capacity, and stronger output capability. The battery pack 30 is housed within the tray 200, which supports the battery pack 30 and facilitates its installation and setup. The core 300, side plates 301, end caps 302, separators 303, and pull plates 304 are components of the battery pack 30. The core 300 stores and releases energy. The side plates 301 clamp, fix, and protect the core 300. The end caps 302 provide insulation and mechanical protection for the core 300 terminals and the battery pack's data acquisition unit. The separators 303 act as separators between two battery packs 30, providing physical isolation and positioning. The pull plates 304 fix the core 300, maintain preload, and enhance structural strength. It should be noted that the battery pack 30 can be fixed to the bottom of the tray 200 using adhesive or bolts. The number of battery packs 30 can be determined by the structure of the battery pack 1 and can be one or more. It should be noted that the side plate 301, end cap 302, and separator 303 can be made of metal or polymer-based composite materials, and can be single-layer or multi-layered. Depending on the structural dimensions of the battery pack 1, the side plate 301, separator 303, and end cap 302 can be planar or irregularly shaped.

[0030] Side plates 301 are disposed on both sides of core 300, end caps 302 are disposed on the two end faces of core 300, partition plates 303 are disposed between two adjacent cores 300, and pull plates 304 are connected to side plates 301 and partition plates 303 respectively. Side plates 301 are disposed on both sides of the core 300. At this time, the side plates 301 can restrict the expansion displacement of the core 300 and provide solid high pre-tightening force, which can enhance the impact and collision safety. End caps 302 are disposed on the two end faces of the core 300. At this time, the end caps 302 can apply and maintain pre-tightening force, which can provide structural stability and vibration resistance, restrict the expansion of the core 300, and extend the life of the battery pack 30. At this time, the separator 303 can restrict the expansion displacement of the core 300 and provide solid high pre-tightening force, which can extend the life of the battery pack 30. The pull plate 304 is connected to the side plates 301 and the separator 303 respectively. This can improve the structural rigidity and stability of the battery pack 30, restrict the expansion of the core 300, and extend the life of the battery pack 30. Through the above settings, the battery pack 30 can achieve high safety, long life and high integration.

[0031] The connecting assembly 10 also includes a copper busbar 102, with connecting wires 100 and the copper busbar 102 disposed in at least one of the side plate 301, end cap 302, and separator 303. The copper busbar 102 can serve as a connector, enabling the connection of the core components 300. The connecting wires 100 and the copper busbar 102 can be integrated into one or more of the side plate 301, end cap 302, and separator 303. This improves the neatness of the connecting wires 100 and the copper busbar 102, enhances assembly efficiency, strengthens connection reliability, and improves the space utilization of the battery pack 30, preventing the connecting wires 100 and the copper busbar 102 from occupying additional internal volume of the battery pack 30. It should be noted that the connecting wire 100 can be a high-voltage connecting wire 100 or a low-voltage connecting wire 100. The number and arrangement of the connecting wires 100 can be determined by the connection requirements of the electrical equipment and the battery pack 1. The connecting wire 100 can be single-strand or multi-strand. The connecting wire 100 can be an uncoated metal core, an enameled wire, an insulated connecting wire 100, a shielded connecting wire 100, a fireproof connecting wire 100, or a combination of multiple types. The number of copper busbars 102 can be one or more. The arrangement of the copper busbars 102 can be vertical, horizontal, or inclined, which can be determined by the wiring requirements of the copper busbars 102 of the battery pack 1. The copper busbars 102 can be copper busbars, aluminum busbars, copper-aluminum composite busbars, and can be uncoated metal busbars or metal busbars with an insulating layer. The insulating layer can be IP film, PVC, heat shrink tubing, mica tape, etc., or a combination of multiple types.

[0032] In addition, at least one of the side plate 301, end cap 302 and partition plate 303 is provided with a second through hole, and the connecting wire 100 and copper busbar 102 are disposed in the second through hole, or the connecting wire 100 and copper busbar 102 are disposed on the inner surface of at least one of the side plate 301, end cap 302 and partition plate 303, or the connecting wire 100 and copper busbar 102 are disposed on the outer surface of at least one of the side plate 301, end cap 302 and partition plate 303. The second through hole can be used to install the connecting wire 100 and the copper busbar 102. When the connecting wire 100 and the copper busbar 102 are installed in the second through hole, the connecting wire 100 and the copper busbar 102 can be integrated into one or more of the side plate 301, end cap 302, and separator 303. This improves the neatness of the connecting wire 100 and the copper busbar 102, increases assembly efficiency, and enhances connection reliability. Furthermore, it improves the space utilization of the battery pack 30, preventing the connecting wire 100 and the copper busbar 102 from occupying additional internal volume of the battery pack 300. Alternatively, the connecting wire 100 and the copper busbar 102 can be installed on the inner surface of at least one of the side plate 301, end cap 302, and separator 303. In this case, the space utilization of the battery pack 30 can be improved, and the connection wires 100 and copper busbars 102 can be avoided from occupying additional internal volume of the battery pack 30. This can improve the structural stability and reliability of the battery pack 30. In addition, it can prevent the insulation of the connection wires 100 and copper busbars 102 from being damaged due to shaking during assembly or vibration, thus avoiding the risk of short circuit. Alternatively, the connection wires 100 and copper busbars 102 can be set on the outer surface of at least one of the side plate 301, end cover 302 and separator 303, which facilitates maintenance and repair and can improve connection efficiency. In addition, the copper busbars 102 are exposed on the outer surface of the battery pack 30, which is conducive to air convection or contact with the external cooling system and can improve heat dissipation efficiency.

[0033] It should be noted that the copper busbar 102 has bolt holes, threads, or high-voltage connectors at its ends. A bolt hole at the end allows bolts or screws to pass through for tightening the connection. This results in a simple structure, low cost, high reliability, and allows for repeated disassembly and assembly, facilitating maintenance. Internal threads can be embedded or directly machined at the end of the copper busbar 102, allowing screws or studs to be directly screwed in. This results in a more compact connection, saving space. Furthermore, it eliminates the need for additional nuts, reducing the number of parts and improving assembly efficiency. A high-voltage connector 101 can be integrated or connected to the end of the copper busbar 102, enabling plug-and-play connections. This supports quick insertion and removal, suitable for battery swapping and maintenance scenarios, improving safety and providing good sealing. The structure and specifications of the connectors are determined by the connection requirements of the battery pack 1.

[0034] In addition, such as Figures 1-5As shown, the connection assembly 10 also includes a connector 101 and a bridge 103. The connector 101 is connected to the end of the connection line 100. When the connector 101 is provided at the end of the adjacent side plate 301, the end of the end cover 302 and the end of the partition 303, the two connectors 101 can be electrically connected through the bridge 103. Connector 101 and bridging element 103 are structural components of the connection assembly 10. Connector 101 serves functions such as power transmission, signal communication, modular assembly, and safety isolation. Bridging element 103 enables cross-connection, structural support, or functional transition. Connector 101 is connected to the end of the connecting line 100, achieving modularity, detachability, and high reliability of the electrical connection. When connectors 101 are provided at the ends of adjacent side plates 301, end caps 302, and partitions 303, two connectors 101 can be electrically connected through bridging element 103. This achieves modularity and plug-and-play functionality, improves maintainability and scalability, enhances connection reliability, and optimizes the spatial layout of the battery pack 1, increasing the space utilization of the battery pack 1 and the electrical equipment. The structure and specifications of connector 101 are determined by the connection requirements of the battery pack 1.

[0035] The electrical equipment according to the present utility model includes: the battery pack 1 described in the above embodiments.

[0036] Electrical equipment can include vehicles, batteries, motors, controllers, drives, and memory.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack (1), characterized in that, include: A connection component (10) includes a connection line (100). The housing (20) includes a tray (200) and a cover plate (201). The cover plate (201) covers the tray (200), and a first through hole (202) is provided in the cover plate (201). The connecting line (100) is provided in the first through hole (202).

2. The battery pack (1) according to claim 1, characterized in that, The cover plate (201) includes: a first composite material layer (203) and a second composite material layer (204), wherein the first composite material layer (203) is disposed on the side of the second composite material layer (204) away from the tray (200), and the first through hole (202) is defined between the first composite material layer (203) and the second composite material layer (204).

3. The battery pack (1) according to claim 2, characterized in that, The first composite material layer (203) is a metal material layer or a polymer-based composite material layer, and the second composite material layer (204) is a metal material layer or a polymer-based composite material layer.

4. The battery pack (1) according to claim 1, characterized in that, The connecting line (100) is also provided on the surface of the cover plate (201) on the side adjacent to the tray (200).

5. The battery pack (1) according to claim 1, characterized in that, The connecting assembly (10) further includes: a connector (101) connected to the end of the connecting line (100), the connector (101) being disposed on the cover plate (201); or The connector (101) is disposed at the edge of the cover plate (201); or The connecting line (100) extends beyond the edge of the cover plate (201), and the connector (101) is connected to the end of the extended connecting line (100).

6. The battery pack (1) according to claim 1, characterized in that, Also includes: A battery pack (30) is disposed in the tray (200). The battery pack (30) includes: a core (300), a side plate (301), an end cap (302), a separator (303), and a pull plate (304). The side plate (301) is disposed on both sides of the core (300). The end cap (302) is disposed on the two end faces of the core (300). The separator (303) is disposed between two adjacent cores (300). The pull plate (304) is connected to the side plate (301) and the separator (303) respectively. The connecting assembly (10) further includes: a copper busbar (102). The connecting line (100) and the copper busbar (102) are disposed in at least one of the side plate (301), the end cap (302), and the separator (303).

7. The battery pack (1) according to claim 6, characterized in that, At least one of the side plate (301), the end cap (302), and the partition plate (303) is provided with a second through hole, and the connecting wire (100) and the copper busbar (102) are disposed in the second through hole; or The connecting line (100) and the copper busbar (102) are disposed on the inner surface of at least one of the side plate (301), the end cap (302), and the partition (303); or The connecting line (100) and the copper busbar (102) are disposed on the outer surface of at least one of the side plate (301), the end cap (302) and the partition (303).

8. The battery pack (1) according to claim 6, characterized in that, The copper busbar (102) is provided with bolt holes, threads or high-voltage connectors at its end.

9. The battery pack (1) according to claim 6, characterized in that, The connection assembly (10) further includes a connector (101) and a bridge (103). The connector (101) is connected to the end of the connection line (100). When the connector (101) is provided at the ends of adjacent side plates (301), the ends of end caps (302) and the ends of partitions (303), the two connectors (101) can be electrically connected through the bridge (103).

10. An electrical appliance, characterized in that, include: The battery pack (1) according to any one of claims 1-9.

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