Battery pack and electric device

Abstract

The application discloses a battery pack and an electric device. The battery pack comprises a heat dissipation module, a wire harness and a mounting module. The heat dissipation module comprises a plurality of cooling plates arranged along a first direction. The wire harness is located at one end of the heat dissipation module along a second direction. The mounting module comprises a mounting piece comprising a wire harness part and a connecting part connected with each other. The connecting part is connected to the cooling plate, the wire harness part is located at one end of the cooling plate along the second direction, and the wire harness is mounted on the wire harness part. The mounting piece is arranged on the cooling plate, and then the wire harness is connected to the mounting piece. The original cooling plate in the battery pack is utilized to realize wiring and fixing of the wire harness, a structure for mounting the wire harness on the shell is not formed, the structure of the shell is simplified, and the manufacturing cost of the shell is reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery pack and an electrical device. Background Technology

[0002] In existing technologies, the wiring harnesses in a battery pack are fixed and routed through a housing. For example, multiple mounting structures are set inside the housing, and the wiring harnesses are sequentially mounted on these structures to achieve wiring harness fixation and routing. This design results in a relatively complex internal structure of the housing and higher manufacturing costs. Summary of the Invention

[0003] This application aims to provide a battery pack and power supply device that at least solves one of the problems of complex internal structure of the battery pack casing.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application propose a battery pack having a first direction and a second direction that are perpendicular to each other, including: The heat dissipation module includes multiple cooling plates arranged along the first direction; A wiring harness located at one end of the heat dissipation module along the second direction; The mounting module includes a mounting component, which includes a connected wire harness portion and a connecting portion. The connecting portion is connected to the cooling plate, and the wire harness portion is located at one end of the cooling plate along the second direction. The wire harness is mounted on the wire harness portion.

[0005] According to some embodiments of this application, the connecting portion includes a first connecting segment and a second connecting segment. The first connecting segment is located on one side of the cooling plate along the first direction and is connected to the cooling plate. The second connecting segment is located at one end of the cooling plate along the second direction and is connected to the wire harness portion.

[0006] According to some embodiments of this application, the cooling plate includes a flow channel plate and a collector arranged along the second direction. The flow channel plate is provided with a first inner cavity for containing coolant, and the collector is provided with a second inner cavity for containing coolant. The second inner cavity communicates with the first inner cavity. The collector is provided with a fixing hole extending along the first direction. The mounting component further includes a fastener disposed on the first connecting section, the fastener extending into the fixing hole and connected to the flow channel plate; along the first direction, the projection of the fixing hole onto a plane perpendicular to the first direction is located outside the projection of the second inner cavity onto a plane perpendicular to the first direction.

[0007] According to some embodiments of this application, the wire harness portion defines a wire harness hole, and the wire harness passes through the wire harness hole along the first direction.

[0008] According to some embodiments of this application, the wire harness portion defines a wire harness hole for mounting the wire harness; The second connecting section includes a first part located inside the wire harness hole and a second part located outside the wire harness hole. The second part is provided with a limiting protrusion that can abut against the wire harness portion along the first direction.

[0009] According to some embodiments of this application, the second connecting segment and the cooling plate are spaced apart along the second direction.

[0010] According to some embodiments of this application, the mounting member further includes a protrusion disposed on the side of the second connecting section facing the cooling plate; The wire harness portion is connected to the side of the second connecting section opposite to the cooling plate, and the protrusion abuts against the cooling plate; or, the wire harness portion defines a wire harness hole for mounting the wire harness, the wire harness portion has an inner wall surface and an outer wall surface that are radially opposite to the wire harness hole, the outer wall surface abuts against the cooling plate, the second connecting section extends into the wire harness hole, and the protrusion abuts against the inner wall surface.

[0011] According to some embodiments of this application, the wire harness portion is formed as an annular integral structure and defines a wire harness hole for mounting the wire harness; Alternatively, the wire harness portion includes a first petal and a second petal, one end of the first petal and one end of the second petal are rotatably or detachably connected, the other end of the first petal and the other end of the second petal are detachably connected, and the first petal and the second petal together form a wire harness hole for mounting the wire harness.

[0012] According to some embodiments of this application, the connecting portion and / or the wire harness portion is made of insulating material.

[0013] According to some embodiments of this application, the battery pack further includes a plurality of battery modules arranged along the first direction, the battery modules being located between adjacent cooling plates along the first direction, and the battery module including: a controller and a plurality of battery cells arranged along the second direction, the controller being located on the outermost side of the battery module along the second direction; the wiring harness is used for electrical connection to the plurality of controllers; The mounting module includes multiple mounting components arranged along the first direction, each mounting component being connected to a cooling plate, and the wiring harness being sequentially mounted on the multiple mounting components.

[0014] Secondly, embodiments of this application provide an electrical device, comprising: Battery pack; The main body of the device, to which the battery pack is electrically connected.

[0015] In the embodiments of this application, the beneficial effects are as follows: the mounting component is placed on the cooling plate, and then the wire harness is connected to the mounting component. The existing cooling plate in the battery pack is used to realize the routing and fixing of the wire harness. There is no need to form a structure for mounting the wire harness on the housing, which simplifies the structure of the housing and reduces the manufacturing cost of the housing.

[0016] Additional aspects and advantages of the 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

[0017] The above and / or additional aspects and advantages of the present invention 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 a partial structural schematic diagram of a battery pack according to an embodiment of the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the structure of the mounting component, wiring harness, and current collector according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the mounting component according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of the cooling plate according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the current collector structure according to an embodiment of the present invention; Figure 7 This is a cross-sectional view of the wire harness portion according to an embodiment of the present invention; In the picture: 100. Cooling plate; 110. Current collector; 111. Second inner cavity; 112. Fixing hole; 120. Flow channel plate; 121. First inner cavity; 200. Wiring harness; 300. Mounting component; 310. Connecting part; 311. First connecting section; 312. Second connecting section; 313. Limiting protrusion; 314. Fastener; 315. Protrusion; 320. Wire harness part; 321. First petal; 322. Second petal; 323. Wire harness hole; 400. Controller; X, First direction; Y, Second direction. Detailed Implementation

[0018] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0019] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] 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," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] The following is combined Figures 1-7 This application describes a battery pack and an electrical device according to embodiments thereof.

[0023] Please refer to Figures 1-3According to some embodiments of this application, a battery pack has a first direction X and a second direction Y that are perpendicular to each other. The battery pack includes a heat dissipation module, a wiring harness 200, and a mounting module. The heat dissipation module includes a plurality of cooling plates 100 arranged along the first direction X. The wiring harness 200 is located at one end of the heat dissipation module along the second direction Y. The mounting module includes a mounting member 300, which includes a wire harness portion 320 and a connecting portion 310. The connecting portion 310 is connected to the cooling plate 100, and the wire harness portion 320 is located at one end of the cooling plate 100 along the second direction Y. The wiring harness 200 is mounted on the wire harness portion 320. Exemplarily, the first direction X can be specifically understood as the width direction of the battery pack, and the second direction Y can be specifically understood as the length direction of the battery pack.

[0024] According to the battery pack of this application embodiment, the mounting member 300 is disposed on the cooling plate 100, and then the wiring harness 200 is connected to the mounting member 300. The wiring harness 200 is routed and fixed by using the original cooling plate 100 in the battery pack. There is no need to form a structure for mounting the wiring harness 200 on the housing, which simplifies the structure of the housing and reduces the manufacturing cost of the housing.

[0025] Specifically, the mounting component 300 includes a wire harness portion 320 and a connecting portion 310 connected together. The connecting portion 310 is connected and fixed to the cooling plate 100. The wire harness 200 is mounted on the wire harness portion 320. In this way, the wire harness 200 is mounted and fixed on the cooling plate 100 so that the wire harness 200 is fixed and routed through the cooling plate 100.

[0026] The battery pack provided in this embodiment further includes battery modules, and the battery pack also includes multiple battery modules arranged along a first direction X. The battery modules are located between adjacent cooling plates 100 along the first direction X. Each battery module includes a controller 400 (CSC, also known as a slave control unit, used for signal acquisition and control of multiple battery cells) and multiple battery cells arranged along a second direction Y. The controller 400 is located on the outermost side of the battery module along the second direction Y. In this embodiment, the wiring harness 200 is used to connect multiple controllers 400. Due to the limited positional distribution of the controllers 400, the wiring harness 200 is usually located at one end of the battery module along the second direction Y.

[0027] Based on this, in this embodiment of the application, the wiring harness 320 is located at one end of the cooling plate 100 along the second direction Y, so that the wiring harness 320 can utilize the cooling plate 100 for wiring without changing the position of the wiring harness 200, thereby simplifying the structure of the housing and reducing the manufacturing cost of the housing.

[0028] Furthermore, the wiring harness 200 is mounted and fixed to the cooling plate 100, allowing the wiring harness 200, battery module, and heat dissipation module to function as a single unit for easy installation and disassembly. Specifically, during installation, the wiring harness 200 can be first installed onto the cooling plate 100 and simultaneously connected to the controller 400, and then the entire assembly can be installed onto the housing. During disassembly, the wiring harness 200, battery module, and heat dissipation module can be separated from the housing as a single unit without separating the housing and wiring harness 200.

[0029] Please refer to Figure 4 According to some embodiments of this application, the connecting portion 310 includes a first connecting segment 311 and a second connecting segment 312. The first connecting segment 311 is located on one side of the cooling plate 100 along the first direction X and connected to the cooling plate 100. The second connecting segment 312 is located at one end of the cooling plate 100 along the second direction Y and connected to the wire harness portion 320. Specifically, the first connecting segment 311 and the second connecting segment 312 are perpendicular to each other, forming an L-shaped structure. The first connecting segment 311 is connected to the side of the cooling plate 100 along the first direction X, and the side of the cooling plate 100 has sufficient area for connecting to the first connecting segment 311, allowing the connecting portion 310 to be stably mounted on the cooling plate 100. Simultaneously, the second connecting segment 312 is located at one end of the cooling plate 100 along the second direction Y to facilitate connection to the wire harness portion 320. Exemplarily, the connection method between the first connecting segment 311 and the cooling plate 100 can be welding, bolting, threading, snap-fitting, etc.

[0030] Please refer to Figure 2 , Figure 5 and Figure 6 According to some embodiments of this application, the cooling plate 100 includes a flow channel plate 120 and a collector 110 arranged along a second direction Y. The flow channel plate 120 is provided with a first inner cavity 121 for containing coolant, and the collector 110 is provided with a second inner cavity 111 for containing coolant. The second inner cavity 111 communicates with the first inner cavity 121. The collector 110 is provided with a fixing hole 112 extending along a first direction X. The mounting member 300 also includes a fastener 314 disposed on the first connecting section 311. The fastener 314 extends into the fixing hole 112 and is connected to the flow channel plate 120. Along the first direction X, the projection of the fixing hole 112 onto a plane perpendicular to the first direction X is located outside the projection of the second inner cavity 111 onto a plane perpendicular to the first direction X.

[0031] Specifically, the current collector 110 has a second inner cavity 111, and the flow channel plate 120 has a first inner cavity 121. Coolant can flow into the second inner cavity 111 from the outside and then flow from the second inner cavity 111 to the first inner cavity 121. The flow channel plate 120 is in contact with the battery cell, thereby allowing the coolant flowing through the first inner cavity 121 to dissipate heat from the battery cell. Simultaneously, the first connecting section 311 is connected to the cooling plate 100 via a fastener 314. The projection of the fixing hole 112 along the first direction X is offset from the projection of the second inner cavity 111 along the first direction X, allowing the fixing hole 112 to avoid the second inner cavity 111 and preventing coolant from flowing out of the fixing hole 112. For example, the fixing hole 112 can be a through hole or a threaded hole, and the fastener 314 can be a bolt or a screw. The fastener 314 extends into the fixing hole 112 and is fixed to the cooling plate 100, thus achieving the connection and fixation between the first connecting section 310 and the cooling plate 100.

[0032] Please refer to Figure 7 According to some embodiments of this application, the wire harness portion 320 defines a wire harness hole 323, and the wire harness 200 passes through the wire harness hole 323 along a first direction X. Exemplarily, the wire harness portion 320 is arranged in a ring shape, defining a wire harness hole 323 extending along the first direction X, through which the wire harness 200 can pass, thereby achieving the installation and fixation of the wire harness portion 320 and the wire harness 200.

[0033] Please refer to Figure 3 and Figure 4 According to some embodiments of this application, the second connecting segment 312 includes a first portion located within the wire harness hole 323 and a second portion located outside the wire harness hole 323. The second portion is provided with a limiting protrusion 313, which can abut against the wire harness portion 320 along the first direction X. By abutting against the wire harness portion 320 with the limiting protrusion 313, the wire harness portion 320 is limited, preventing the wire harness portion 320 from coming off the second connecting segment 312 and causing the wire harness 200 to fall off the cooling plate 100. Further, the limiting protrusion 313 is located at one end of the second connecting segment 312 opposite to the first connecting segment 311, and the wire harness portion 320 is located between the limiting protrusion 313 and the first connecting segment 311 along the first direction X. Thus, one end of the wire harness 320 can abut against the limiting protrusion 313, and the other end of the wire harness 320 can abut against the first connecting segment 311. The two ends of the wire harness 320 are respectively constrained by the limiting protrusion 313 and the first connecting segment 311, preventing the wire harness 320 from coming off the second connecting segment 312.

[0034] According to some embodiments of this application, the wire harness 200 is located at one end of the second connecting section 312 away from the cooling plate 100 along the second direction Y. The second connecting section 312 and the cooling plate 100 are spaced apart along the second direction Y, which increases the distance between the wire harness 200 and the cooling plate 100, thereby avoiding arcing or other adverse phenomena caused by the wire harness 200 and the cooling plate 100 being too close.

[0035] Please refer to Figure 4 According to some embodiments of this application, the mounting member 300 further includes a protrusion 315, which is disposed on the side of the second connecting section 312 facing the cooling plate 100; the wire harness portion 320 is connected to the side of the second connecting section 312 away from the cooling plate 100, and the protrusion 315 abuts against the cooling plate 100; or, the wire harness portion 320 defines a wire harness hole 323 for mounting the wire harness 200, the wire harness portion 320 has an inner wall surface and an outer wall surface that are radially opposite to each other along the wire harness hole 323, the outer wall surface abuts against the cooling plate 100, the second connecting section 312 extends into the wire harness hole 323, and the protrusion 315 abuts against the inner wall surface. Thus, by providing a protrusion 315 on the side of the second connecting section 312 opposite to the wire harness 200, and having the protrusion 315 abut against the cooling plate 100, or having the protrusion 315 abut against the inner wall surface of the wire harness portion 320 and the outer wall surface of the wire harness portion 320 abut against the cooling plate 100, the distance between the cooling plate 100 and the wire harness 200 can be increased, while the connection strength between the connecting portion 310 and the cooling plate 100 can be enhanced. The connecting portion 310 will not rotate around the fixing hole 112, thus preventing the connecting portion 310 from becoming loose.

[0036] According to some embodiments of this application, the wire harness portion 320 is formed as an annular integral structure and defines a wire harness hole 323 for mounting the wire harness 200. Exemplarily, the wire harness portion 320 has a certain degree of elasticity, and the inner diameter of the wire harness hole 323 is slightly smaller than the outer diameter of the wire harness 200. When the wire harness 200 extends into the wire harness hole 323, it presses the wire harness portion 320 outward, causing the wire harness portion 320 to deform and pre-tighten the wire harness 200 inward. Thus, through the elasticity of the wire harness portion 320 itself, a pre-tightening force can be applied to the wire harness 200, thereby achieving the installation and fixation of the wire harness 200 and preventing the wire harness 200 from sliding within the wire harness hole 323.

[0037] According to other embodiments of this application, the wire harness portion 320 includes a first petal 321 and a second petal 322. One end of the first petal 321 is detachably connected to one end of the second petal 322, and the other end of the first petal 321 is detachably connected to the other end of the second petal 322. The first petal 321 and the second petal 322 together form a wire harness hole 323 for mounting the wire harness 200. Thus, when mounting the wire harness 200, the first petal 321 and the second petal 322 can be separated to open the wire harness hole 323, the wire harness 200 can be inserted, and then the two can be closed and connected to fix it, thereby realizing the mounting and fixing of the wire harness 200.

[0038] Please refer to Figure 7 According to other embodiments of this application, the wire harness portion 320 includes a first petal 321 and a second petal 322. One end of the first petal 321 is rotatably connected to one end of the second petal 322, and the other end of the first petal 321 is detachably connected to the other end of the second petal 322. The first petal 321 and the second petal 322 together form a wire harness hole 323 for mounting the wire harness 200. Thus, by separating one end of the first petal 321 and one end of the second petal 322, and rotating the other ends of the first petal 321 and the second petal 322, the wire harness hole 323 is opened. The wire harness 200 is then inserted, and the two are then closed and connected to fix it, thereby achieving the installation and fixation of the wire harness 200.

[0039] For example, the wire harness portion 320 can be specifically configured as a cable tie, a clamp, etc. When the wire harness portion 320 is configured as a cable tie, the cable tie can wrap around the wire harness 200 and tighten it, using the cable tie's own locking structure to fix the wire harness 200. When the wire harness portion 320 is configured as a clamp, the clamp usually consists of a clamp and a locking device. The clamp is put on the wire harness 200, and the clamp is tightened by the locking device, thereby firmly fixing the wire harness 200.

[0040] According to some embodiments of this application, the connecting portion 310 and / or the wire harness portion 320 are made of insulating material. In this way, the connecting portion 310 and the wire harness portion 320 can avoid forming an electrical connection with the wire harness 200, preventing short circuits and other adverse phenomena in the wire harness 200, and improving the safety of the battery pack. Exemplarily, the connecting portion 310 and the wire harness portion 320 may be made of insulating materials such as plastic or rubber.

[0041] According to some embodiments of this application, the mounting module includes multiple mounting members 300 arranged along a first direction X. Each mounting member 300 is connected to a cooling plate 100, and a wiring harness 200 is sequentially mounted on the multiple mounting members 300. Multiple controllers 400 are arranged along the first direction X, therefore the wiring harness 200 needs to extend along the first direction X to connect to the multiple controllers 400. Since the cooling plates 100 are arranged along the first direction X, by providing mounting members 300 at the ends of each cooling plate 100, and sequentially mounting and fixing the wiring harness 200 to the mounting members 300, the wiring harness 200 can extend along the first direction X and simultaneously connect to the multiple controllers 400.

[0042] An electrical device according to some embodiments of this application includes a device body and a battery pack, wherein the battery pack is electrically connected to the device body for supplying power to the device body. Exemplarily, the electrical device may be a vehicle, which broadly refers to SUVs, sedans, buses, and trucks, including pure electric vehicles, hybrid electric vehicles, and range-extended electric vehicles. The electrical device may also be a power tool, a drone, a subway, a ship, etc.

[0043] 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., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack having a first direction (X) and a second direction (Y) that are perpendicular to each other, characterized in that, include: The heat dissipation module includes a plurality of cooling plates (100) arranged along the first direction (X). A wiring harness (200) is located at one end of the heat dissipation module along the second direction (Y); The mounting module includes a mounting component (300), which includes a connected wire harness portion (320) and a connecting portion (310). The connecting portion (310) is connected to the cooling plate (100), and the wire harness portion (320) is located at one end of the cooling plate (100) along the second direction (Y). The wire harness (200) is mounted on the wire harness portion (320).

2. The battery pack according to claim 1, characterized in that, The connecting portion (310) includes a first connecting segment (311) and a second connecting segment (312). The first connecting segment (311) is located on one side of the cooling plate (100) along the first direction (X) and is connected to the cooling plate (100). The second connecting segment (312) is located at one end of the cooling plate (100) along the second direction (Y) and is connected to the wire harness portion (320).

3. The battery pack according to claim 2, characterized in that, The cooling plate (100) includes a flow channel plate (120) and a collector (110) arranged along the second direction (Y). The flow channel plate (120) is provided with a first inner cavity (121) for containing coolant, and the collector (110) is provided with a second inner cavity (111) for containing coolant. The second inner cavity (111) communicates with the first inner cavity (121). The collector (110) is provided with a fixing hole (112) extending along the first direction (X). The mounting component (300) further includes a fastener (314) disposed on the first connecting section (311), the fastener (314) extending into the fixing hole (112) and connected to the flow channel plate (120); along the first direction (X), the projection of the fixing hole (112) in a plane perpendicular to the first direction (X) is located outside the projection of the second inner cavity (111) in a plane perpendicular to the first direction (X).

4. The battery pack according to claim 1, characterized in that, The wire harness portion (320) defines a wire harness hole (323), through which the wire harness (200) passes in the wire harness hole (323) along the first direction (X).

5. The battery pack according to claim 2, characterized in that, The wire harness portion (320) defines a wire harness hole (323) for mounting the wire harness (200). The second connecting section (312) includes a first part located inside the wire harness hole (323) and a second part located outside the wire harness hole (323). The second part is provided with a limiting protrusion (313), which can abut against the wire harness portion (320) along the first direction (X).

6. The battery pack according to claim 2, characterized in that, The second connecting segment (312) and the cooling plate (100) are spaced apart along the second direction (Y).

7. The battery pack according to claim 6, characterized in that, The mounting component (300) further includes a protrusion (315) disposed on the side of the second connecting section (312) facing the cooling plate (100); The wire harness portion (320) is connected to the side of the second connecting segment (312) facing away from the cooling plate (100), and the protrusion (315) abuts against the cooling plate (100); or, the wire harness portion (320) defines a wire harness hole (323) for mounting the wire harness (200), the wire harness portion (320) has an inner wall surface and an outer wall surface that are radially opposite to each other along the wire harness hole (323), the outer wall surface abuts against the cooling plate (100), the second connecting segment (312) extends into the wire harness hole (323), and the protrusion (315) abuts against the inner wall surface.

8. The battery pack according to claim 1, characterized in that, The wire harness portion (320) is formed into an annular integral structure and defines a wire harness hole (323) for mounting the wire harness (200). Alternatively, the wire harness portion (320) includes a first petal (321) and a second petal (322), one end of the first petal (321) being rotatably or detachably connected to one end of the second petal (322), the other end of the first petal (321) being detachably connected to the other end of the second petal (322), and the first petal (321) and the second petal (322) together forming a wire harness hole (323) for mounting the wire harness (200).

9. The battery pack according to claim 1, characterized in that, The connecting portion (310) and / or the wire harness portion (320) are made of insulating material.

10. The battery pack according to claim 1, characterized in that, The battery pack further includes a plurality of battery modules arranged along the first direction (X), the battery modules being located between adjacent cooling plates (100) along the first direction (X), each battery module including: a controller (400) and a plurality of battery cells arranged along the second direction (Y), the controller (400) being located on the outermost side of the battery module along the second direction (Y); the wiring harness (200) is used for electrical connection to the plurality of controllers (400). The mounting module includes a plurality of mounting components (300) arranged along the first direction (X), each of the mounting components (300) being connected to each of the cooling plates (100), and the wiring harness (200) being installed sequentially on the plurality of mounting components (300).

11. An electrical appliance, characterized in that, include: The battery pack as described in any one of claims 1 to 10; The main body of the device, to which the battery pack is electrically connected.

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