Battery pack and electric equipment

Abstract

The embodiment of the utility model provides a battery pack and electric equipment. The battery pack comprises a box body, a battery unit, a wire harness and an elastic clamping piece, the box body comprises a first side wall and a first bottom wall, and a mounting cavity is defined by the first side wall and the first bottom wall; the battery unit is arranged in the mounting cavity, a containing cavity is formed between the battery unit and the first side wall, and a first clamping groove is formed in the side, close to the containing cavity, of the first side wall; the wire harness is arranged in the elastic clamping piece in a penetrating mode, and the elastic clamping piece is arranged in the first clamping groove. Thus, in the wire harness storage process, only the wire harness needs to be pressed into the storage cavity, the elastic clamping piece arranged on the wire harness in a sleeving mode can generate elastic deformation so as to be reliably clamped with the first clamping groove, therefore, reliable fixing of the wire harness can be achieved, the clamping fixing mode is easy to operate, and working hours are saved.

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] Wiring harnesses are a key component of battery packs, primarily used for transmitting electrical energy and / or signals. Battery packs typically consist of a housing and battery cells housed within it. The gap between the battery cells and the side walls of the housing can serve as storage space, allowing for the storage of the wiring harnesses by placing them within this space.

[0003] In related technologies, cable ties are typically used to secure the wire harness for reliable storage. However, as the energy density of battery packs continues to increase, storage space becomes increasingly limited, making cable tie securing more difficult and time-consuming. Utility Model Content

[0004] This application aims to provide a battery pack and electrical equipment to solve the problem that it is difficult and time-consuming to fix wire harnesses in confined spaces using cable ties.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses a battery pack, including: a housing, battery cells, wiring harness, and a flexible snap-fit ​​connector;

[0007] The housing includes a first side wall and a first bottom wall, which together form an installation cavity.

[0008] The battery unit is disposed in the mounting cavity and has a storage cavity between it and the first side wall. A first slot is provided on the side of the first side wall near the storage cavity.

[0009] The wire harness is threaded through the elastic snap-fit ​​member, which is located within the first slot.

[0010] Optionally, the first sidewall is provided with multiple types;

[0011] The first sidewall with the first card slot is the target sidewall, the length direction of the target sidewall is the second direction, and the first card slot extends along the second direction to both ends of the target sidewall.

[0012] Optionally, the cross-section of the first slot perpendicular to the second direction is arc-shaped.

[0013] Optionally, the target sidewall includes: a plate and a cavity formed within the plate;

[0014] At least a portion of the plate is recessed toward the cavity to form the first slot.

[0015] Optionally, the cavity is disposed through the plate along the second direction;

[0016] The target sidewall also includes a reinforcing partition, which is disposed within the cavity and connected to the plate.

[0017] Optionally, the width direction of the target sidewall is a third direction, which intersects with the second direction;

[0018] Multiple reinforcing partitions are provided, and the reinforcing partitions extend along the second direction and the multiple reinforcing partitions are spaced apart in the third direction.

[0019] Optionally, the battery cell includes a second sidewall, which, together with the first sidewall, forms the storage cavity;

[0020] Alternatively, the housing may further include a third sidewall, which is disposed on the side of the first sidewall near the battery cell and together with the first sidewall forms the storage cavity.

[0021] Optionally, the second sidewall or the third sidewall is provided with a second slot on the side near the storage cavity;

[0022] The second card slot corresponds to the position of the first card slot, and the elastic snap-fit ​​member is disposed in the first card slot and the second card slot.

[0023] Optionally, multiple elastic snap-fit ​​members are provided, and the multiple elastic snap-fit ​​members are spaced apart along the extension direction of the wire harness;

[0024] The wire harness is threaded through a plurality of the elastic snap-fit ​​connectors.

[0025] Secondly, this application also discloses an electrical device, including the aforementioned battery pack.

[0026] In this embodiment, a first slot is provided on the first sidewall, through which the wire harness passes, and the elastic snap-fit ​​member is located within the first slot. That is, during wire harness storage, simply pressing the wire harness into the storage cavity allows the elastic snap-fit ​​member on the wire harness to undergo elastic deformation and reliably engage with the first slot, thus achieving reliable wire harness fixation. Moreover, compared to cable ties, this snap-fit ​​fixing method is simpler to operate and saves time.

[0027] 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

[0028] 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:

[0029] Figure 1 This is one of the structural schematic diagrams of a battery pack provided in the embodiments of this application;

[0030] Figure 2 This is a second schematic diagram of the structure of a battery pack provided in the embodiments of this application;

[0031] Figure 3 This is an AA cross-sectional view of a battery pack provided in an embodiment of this application;

[0032] Figure 4 This is one of the structural schematic diagrams of the target sidewall provided in the embodiments of this application;

[0033] Figure 5 This is a second schematic diagram of the target sidewall structure provided in the embodiments of this application;

[0034] Figure 6 This is an assembly diagram of the wire harness and the elastic snap-fit ​​component provided in the embodiments of this application;

[0035] Figure 7 yes Figure 6 A magnified view of a portion of position A in the middle.

[0036] Reference numerals: 1. Wiring harness, 2. Flexible snap-fit ​​connector, 3. Housing, 31. First side wall, 311. First slot, 312. Plate, 313. Cavity, 314. Reinforcing partition, 32. First bottom wall, 33. Mounting cavity, 34. Third side wall, 4. Battery cell, 5. Storage cavity, X. First direction, Y. Second direction, Z. Third direction. Detailed Implementation

[0037] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown 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 this utility model, and should not be construed as limiting this utility model. 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.

[0038] 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 utility model, 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.

[0039] 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.

[0040] In this application, the term "parallel" includes not only absolute parallelism but also approximate parallelism as commonly understood in engineering. For example, "parallel" refers to the angle between two lines, a line and a surface, or a surface, where the angle is between -1° and 1°. Similarly, "perpendicular" also includes not only absolute perpendicularity but also approximate perpendicularity as commonly understood in engineering. For example, "perpendicular" refers to the angle between two lines, a line and a surface, or a surface, where the angle is between 89° and 91°. Equal distances or equal angles include not only absolute equality but also approximate equality as commonly understood in engineering, meaning there may be a certain degree of error, such as a tolerance range of -1% to 1%.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0042] This application provides a battery pack, which will be described in detail below with reference to the accompanying drawings.

[0043] Reference Figures 1 to 2 This document shows a schematic diagram of the structure of a battery pack according to an embodiment of this application. (Refer to...) Figure 3The diagram shows an AA cross-sectional view of a battery pack according to an embodiment of this application, with reference to... Figures 4 to 5 This shows a schematic diagram of the target sidewall structure provided in an embodiment of this application, with reference to... Figure 6 This diagram illustrates the assembly of the wire harness and the elastic snap-fit ​​connector provided in an embodiment of this application. (Refer to...) Figure 7 , showed Figure 6 A magnified view of a portion of position A in the middle.

[0044] like Figures 1 to 5 As shown, this application provides a battery pack, including: a housing 3, a battery unit 4, a wiring harness 1, and a flexible snap-fit ​​member 2; the housing 3 includes a first side wall 31 and a first bottom wall 32, which together form an installation cavity 33; the battery unit 4 is disposed in the installation cavity 33 and has a storage cavity 5 between it and the first side wall 31, and a first slot 311 is provided on the side of the first side wall 31 near the storage cavity 5; the wiring harness 1 passes through the flexible snap-fit ​​member 2, which is disposed in the first slot 311, that is, the flexible snap-fit ​​member 2 and the first slot 311 are engaged and snapped together.

[0045] In this embodiment, since the first sidewall 31 is provided with a first slot 311, the wire harness 1 passes through the elastic snap-fit ​​member 2, and the elastic snap-fit ​​member 2 is disposed within the first slot 311. That is, during the wire harness 1 storage process, it is only necessary to press the wire harness 1 into the storage cavity 5, and the elastic snap-fit ​​member 2 sleeved on the wire harness 1 can undergo elastic deformation to reliably snap together with the first slot 311, thereby achieving reliable fixation of the wire harness 1. Moreover, compared with the cable tie fixing method, this snap-fit ​​fixing method is simple to operate and saves time.

[0046] It should be noted that the "elastic snap-fit ​​component 2" in this application embodiment refers to a structural component that can undergo elastic deformation under external force. Specifically, during the process of housing the wire harness 1 in the housing cavity 5, the elastic snap-fit ​​component 2 is pressed into the housing cavity 5 under external force until it reaches the position of the first slot 311. During this process, the elastic snap-fit ​​component 2 first undergoes compression deformation and then springs back, thereby achieving a reliable snap-fit ​​between the elastic snap-fit ​​component 2 and the first slot 311. The material of the elastic snap-fit ​​component 2 includes, but is not limited to, foam. Foam has good elasticity and is lightweight. While achieving a reliable snap-fit ​​between the elastic snap-fit ​​component 2 and the first slot 311, it can also reduce the overall weight of the battery pack, which is beneficial for the lightweight design of the battery pack. Furthermore, those skilled in the art can use foam material with a suitable compression ratio to process the elastic snap-fit ​​component 2 as needed, so that the elastic snap-fit ​​component 2 is tightly snapped together with the first slot 311. In one embodiment, the elastic snap-fit ​​2 is made of foam material with a compression ratio of 20% to 60%. Specifically, the foam material includes, but is not limited to, polyurethane (PU) foam, ethylene-vinyl acetate copolymer (EVA) foam, polyvinyl chloride (PVC) foam, polyethylene (PE) foam, etc.

[0047] Optionally, such as Figures 1 to 4 As shown, the first sidewall 31 is provided with multiple slots; the first sidewall 31 with the first slot 311 is the target sidewall, the length direction of the target sidewall is the second direction Y, and the first slot 311 extends along the second direction Y to both ends of the target sidewall. Specifically, as shown... Figure 2 The first sidewall 31 is provided in four parts, and the four first sidewalls 31 are connected end to end along the circumference of the box body 3. Among them, the two first sidewalls 31 arranged opposite each other in the left-right direction shown in the figure are target sidewalls, and there is a storage cavity 5 between one target sidewall and the battery unit 4, thereby forming two storage cavities 5 in the battery pack that can store the wire harness 1.

[0048] In this embodiment, the first slot 311 extends along the second direction Y to both ends of the target sidewall, meaning the first slot 311 is formed by slotting along the entire length of the target sidewall. This simplifies the structure of the target sidewall, reducing its processing difficulty. Furthermore, the elastic snap-fit ​​member 2 does not need to be pressed into a specific position to engage with the first slot 311, improving the ease of assembly between the elastic snap-fit ​​member 2 and the first slot 311.

[0049] It should be noted that, as Figure 4As shown, taking a single target sidewall as an example, in this embodiment, the first direction X refers to the thickness direction of the target sidewall; the second direction Y refers to the length direction of the target sidewall; and the third direction Z refers to the height direction of the target sidewall. The first direction X, the second direction Y, and the third direction Z intersect each other. In one embodiment, the first direction X, the second direction Y, and the third direction Z can be perpendicular to each other. Furthermore, this embodiment does not limit the number of first slots 311; those skilled in the art can adjust them according to actual needs. It is understood that when multiple first slots 311 are provided, the multiple first slots 311 can be spaced apart along the third direction Z, thereby simultaneously accommodating multiple wire harnesses 1 within the receiving cavity 5. In addition, this embodiment does not limit the cross-sectional shape of the first slot 311 perpendicular to the second direction Y; those skilled in the art can adjust it according to actual needs. For example, the cross-sectional shape of the first slot 311 perpendicular to the second direction Y can be an arc, a triangle, a rectangle, a polygon, or other shapes.

[0050] Typically, the cross-section of the wire harness 1 perpendicular to the second direction Y is circular, and the elastic snap-fit ​​member 2 sleeved on the wire harness 1 has an annular cross-section perpendicular to the second direction Y. Therefore, in some optional embodiments of this application, such as Figure 5 As shown, the cross-section of the first slot 311 perpendicular to the second direction Y is arc-shaped. This design allows for a better fit between the first slot 311 and the elastic connector 2, ensuring a tight seal between their surfaces and improving the reliability of the wire harness 1. Furthermore, the arc-shaped design allows the elastic connector 2 to deform more readily when pressed into the first slot 311, facilitating a more reliable connection between the elastic connector 2 and the first slot 311.

[0051] Optionally, such as Figures 5 to 7 As shown, when the wire harness 1 is not housed in the storage cavity 5, the elastic snap-fit ​​member 2 has a first dimension D1 in the first direction X, and the wire harness 1 has a third dimension D3 in the first direction X, satisfying D1 / D3≥4. That is, the dimension of the elastic snap-fit ​​member 2 in the first direction X before compression (i.e., the outer diameter of the elastic snap-fit ​​member 2 before compression) is at least 4 times the dimension of the wire harness 1 in the first direction X (i.e., the outer diameter of the wire harness 1). In this way, the elastic snap-fit ​​member 2 can still have sufficient thickness in the first direction X after compression, so that the elastic snap-fit ​​member 2 and the wire harness 1 passing through the elastic snap-fit ​​member 2 can be smoothly pressed into the storage cavity 5, thereby realizing the storage and fixation of the wire harness 1.

[0052] It should be noted that the specific values ​​of D1 / D3 are not limited in the embodiments of this application, and those skilled in the art can adjust them according to actual needs. For example, D1 / D3 can be 4, 4.1, 4.5, 5, 5.5, or other values ​​that meet the above requirements.

[0053] Optionally, when the wire harness 1 is housed in the storage cavity 5, the elastic snap-fit ​​member 2 has a second dimension D2 in the first direction X, satisfying 0.4≤D2 / D1≤0.6. That is, the dimension of the elastic snap-fit ​​member 2 in the first direction X after compression (i.e., the outer diameter of the elastic snap-fit ​​member 2 after compression) is 40% to 60% of the dimension of the elastic snap-fit ​​member 2 in the first direction X before compression (i.e., the outer diameter of the elastic snap-fit ​​member 2 before compression). In this way, not only can the elastic snap-fit ​​member 2 still have sufficient thickness in the first direction X after compression, so as to smoothly press the elastic snap-fit ​​member 2 and the wire harness 1 passing through the elastic snap-fit ​​member 2 into the storage cavity 5, thereby realizing the storage and fixation of the wire harness 1; but also can make the compressed elastic snap-fit ​​member 2 fit better with the first slot 311, thereby improving the snap-fit ​​reliability between the elastic snap-fit ​​member 2 and the first slot 311, which in turn helps to improve the fixation reliability of the wire harness 1.

[0054] It should be noted that the specific values ​​of D2 / D1 are not limited in the embodiments of this application, and those skilled in the art can adjust them according to actual needs. For example, D2 / D1 can be 0.4, 0.45, 0.5, 0.58, 0.6, or other values ​​that meet the above requirements.

[0055] Optionally, such as Figure 5 As shown, the target sidewall includes a plate 312 and a cavity 313 formed within the plate 312; at least a portion of the plate 312 is recessed toward the cavity 313 to form a first slot 311. This allows full utilization of the cavity 313, reducing the size of the target sidewall in the first direction X. When the wiring harness is fixed to the battery pack, this reduces the space occupied by the wiring harness within the battery pack, which is beneficial for further improving the energy density of the battery pack.

[0056] Optionally, the cavity 313 is disposed through the plate 312 along the second direction Y; the target sidewall also includes a reinforcing partition 314, which is disposed inside the cavity 313 and connected to the plate 312. In this way, by providing the reinforcing partition 314, the overall structural strength of the target sidewall can be improved, effectively avoiding the deformation of the first slot 311 caused by external impact, which is beneficial to improving the fixing stability of the wire harness 1.

[0057] It should be noted that the number of reinforcing partitions 314 is not limited in the embodiments of this application, and those skilled in the art can adjust it according to actual needs. In one embodiment, the width direction of the target sidewall is the third direction Z, which intersects with the second direction Y; multiple reinforcing partitions 314 are provided, extending along the second direction Y and distributed at intervals in the third direction Z. This can further improve the overall structural strength of the target sidewall and further effectively avoid the deformation of the first slot 311 caused by external impact.

[0058] Optionally, the battery unit 4 includes a second sidewall, which, together with the first sidewall 31, forms a storage cavity 5. That is, the storage cavity 5 is a narrow space formed by the second sidewall of the battery unit 4 and the first sidewall 31 of the housing 3. When the wire harness 1 is stored in the storage cavity 5, the elastic locking member 2 undergoes elastic deformation to engage with the first locking slot 311, while simultaneously abutting against the second sidewall, thereby achieving reliable fixation of the wire harness 1.

[0059] Optionally, such as Figure 3 As shown, the housing 3 also includes a third side wall 34, which is disposed on the side of the first side wall 31 near the battery unit 4 and encloses the first side wall 31 to form a storage cavity 5. That is, the storage cavity 5 is a narrow space enclosed by the first side wall 31 and the third side wall 34 of the housing 3. When the wire harness 1 is stored in the storage cavity 5, the elastic snap-fit ​​member 2 undergoes elastic deformation to engage with the first snap-fit ​​groove 311 and abut against the third side wall 34, thereby achieving reliable fixation of the wire harness 1.

[0060] It should be noted that when the battery unit 4 only includes the battery body, the second sidewall is the sidewall of the battery body; when the battery unit 4 includes the battery body and a protective plate disposed around the battery body, the second sidewall is the protective plate. Furthermore, this application embodiment does not limit the materials of the first sidewall 31, the second sidewall, and the third sidewall 34. Taking the first sidewall 31 as an example, the first sidewall 31 can be a non-metallic material, such as plastic, or a metallic material, such as aluminum alloy. When the first sidewall 31 is a metallic material, it can be formed using aluminum extrusion or sheet metal processing. The second and third sidewalls 34 are similar and will not be described in detail here.

[0061] Optionally, the second or third sidewall 34 is provided with a second slot on the side near the receiving cavity 5; the second slot corresponds to the position of the first slot 311, and the elastic snap-fit ​​member 2 is disposed in the first slot 311 and the second slot, that is, the elastic snap-fit ​​member 2 simultaneously engages with the first slot 311 and the second slot. In other words, the first sidewall 31 and the second sidewall, or the first sidewall 31 and the third sidewall 34, are respectively provided with the first slot 311 and the second slot at opposite positions, so as to better fit the elastic snap-fit ​​member 2 and thus improve the fixing reliability of the wire harness 1.

[0062] It should be noted that the number of second card slots is not limited in this application embodiment, and those skilled in the art can adjust it according to actual needs. It is understood that when there are multiple second card slots, the multiple second card slots can be arranged at intervals along the third direction Z, and the position of one second card slot corresponds to that of one first card slot 311, so that multiple wire harnesses 1 can be stored in the storage cavity 5 at the same time.

[0063] Optionally, such as Figure 6 As shown, multiple elastic clips 2 are provided, and the multiple elastic clips 2 are spaced apart along the extension direction of the wire harness 1 (i.e., the second direction Y); the wire harness 1 passes through the multiple elastic clips 2. In this way, not only can the cost of fixing the wire harness be reduced, but the problem of the wire harness 1 shaking in the storage cavity 5 can also be alleviated, which is conducive to improving the fixing reliability of the wire harness 1.

[0064] It should be noted that the distance between two adjacent elastic clips 2 in the second direction Y is S. This application embodiment does not limit the specific value of the distance S, and those skilled in the art can adjust it according to actual needs. In one embodiment, the distance S satisfies: 100mm ≤ S ≤ 200mm. This, on the one hand, can further reduce the amount of shaking of the wiring harness 1 and further improve the fixing reliability of the wiring harness 1; on the other hand, it can control the cost of fixing the wiring harness within a suitable range and further reduce the production cost of the battery pack.

[0065] In summary, the battery pack provided in this application embodiment has at least the following advantages:

[0066] In this embodiment, a first slot is provided on the first sidewall, through which the wire harness passes, and the elastic snap-fit ​​member is located within the first slot. That is, during wire harness storage, simply pressing the wire harness into the storage cavity allows the elastic snap-fit ​​member on the wire harness to undergo elastic deformation and reliably engage with the first slot, thus achieving reliable wire harness fixation. Moreover, compared to cable ties, this snap-fit ​​fixing method is simpler to operate and saves time.

[0067] This application also provides an electrical device, including the battery pack described above.

[0068] It should be noted that in this embodiment, the structure of the battery pack is the same as that of any of the above embodiments, and its beneficial effects are similar, so it will not be described in detail here.

[0069] 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 present 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.

[0070] 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, characterized by, The battery pack comprises a box body, a battery unit, a wire harness and an elastic clamping piece. The box body comprises a first side wall and a first bottom wall, and the first side wall and the first bottom wall enclose a mounting cavity. The battery unit is arranged in the mounting cavity and has a receiving cavity between the battery unit and the first side wall, and the first side wall is provided with a first clamping groove on the side close to the receiving cavity. The wire harness is arranged in the elastic clamping piece, and the elastic clamping piece is arranged in the first clamping groove. The first side wall is provided with a plurality of 2. The battery pack of claim 1, wherein, The first side wall provided with the first clamping groove is a target side wall, the length direction of the target side wall is a second direction, and the first clamping groove extends to both ends of the target side wall along the second direction. The cross section of the first clamping groove perpendicular to the second direction is in the shape of a circular arc.

3. The battery pack of claim 2, wherein, The target side wall comprises a plate body and a cavity formed in the plate body.

4. The battery pack of claim 2, wherein, At least part of the plate body is recessed towards the direction close to the cavity to form the first clamping groove. The cavity extends through the plate body along the second direction.

5. The battery pack of claim 4, wherein, The target side wall further comprises a reinforcing partition plate arranged in the cavity, and the reinforcing partition plate is connected with the plate body. The width direction of the target side wall is a third direction, and the third direction intersects with the second direction.

6. The battery pack of claim 5, wherein, The reinforcing partition plate is provided with a plurality of reinforcing partition plates, and the reinforcing partition plates extend along the second direction and are distributed in the third direction. The battery unit comprises a second side wall, and the second side wall and the first side wall enclose the receiving cavity.

7. The battery pack of claim 1, wherein, Alternatively, the box body further comprises a third side wall, and the third side wall is arranged on the side of the first side wall close to the battery unit and encloses the receiving cavity with the first side wall. The second side wall or the third side wall is provided with a second clamping groove on the side close to the receiving cavity.

8. The battery pack of claim 7, wherein, The second clamping groove corresponds to the position of the first clamping groove, and the elastic clamping piece is arranged in the first clamping groove and the second clamping groove. The elastic clamping piece is provided with a plurality of elastic clamping pieces, and the elastic clamping pieces are arranged in the extension direction of the wire harness.

9. The battery pack of any one of claims 1-8, wherein, The wire harness is arranged in the plurality of elastic clamping pieces. The battery pack comprises the battery pack of any one of claims 1-9.

10. An electric device, characterized by ​

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