Battery pack and electric device

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery pack and an electric device. The battery pack comprises a battery cover plate, an adapter seat body, a conductive piece, a battery space busbar and an electrical space busbar, the battery cover plate has a height direction, one side of the battery cover plate is provided with a battery space, and the other side of the battery cover plate is provided with an electrical space; the adapter body is fixed on the battery cover plate, and the adapter body is provided with a sealing piece; the conductive piece is embedded in the adapter seat body in a sealing manner, and the conductive piece penetrates through the adapter seat body along the height direction; the conductive piece is provided with a first end part and a second end part, the first end part protrudes out of one side, facing the battery space, of the adapter body, and the second end part protrudes out of one side, facing the electrical space, of the adapter body; the battery space busbar is electrically connected to the first end portion, and the electrical space busbar is electrically connected to the second end portion. And by adopting an embedded combined structure of the adapter body and the conductive piece, reliable electric connection between the battery cell and electrical elements such as the BDU and the BMS is ensured, and sealing isolation between a battery space and an electrical space is ensured at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack and an electrical device. Background Art

[0002] At present, the existing battery pack adopts the layout method of placing battery cells, BDU, BMS and other components in a flat space, compressing various components into a regular space on a plane. The structure of the battery pack is more compact and suitable for connection with the vehicle end.

[0003] For some new energy vehicle models, some areas have excess Z-direction space but limited XY-plane space. To maximize the total battery pack capacity, more cells must be placed within the overall pack space. When arranging the battery pack, cells are prioritized in the relatively regular XY-plane space, while relatively rugged, irregularly shaped areas are used to house scattered components. For example, the Z-direction space of the battery pack can be divided into battery and electrical spaces. Small components such as the BDU and BMS can be placed in the upper electrical space, while as many cells as possible can be placed in the lower battery space. The cells are then connected in series and parallel to the BDU components via a busbar.

[0004] Furthermore, to improve the modality of the battery pack, potting compound must be filled into the lower battery compartment to prevent it from overflowing into the electrical compartment. Consequently, existing battery pack designs struggle to ensure reliable electrical connections between the battery cells and electrical components such as the BDU and BMS, while also ensuring a sealed isolation between the battery compartment and the electrical compartment. Utility Model Content

[0005] The technical problem to be solved by the present invention is that it is difficult for the existing battery pack design to ensure reliable electrical connection between the battery cells and electrical components such as BDU and BMS, while ensuring the sealing and isolation between the battery space and the electrical space.

[0006] In order to solve the above technical problems, the present invention provides a technical solution for a battery pack:

[0007] Battery pack, including:

[0008] A battery cover plate, the battery cover plate having a height direction, the battery cover plate having a battery space on one side of the height direction, the battery cover plate having an electrical space on the other side of the height direction, and the battery cover plate having a receiving hole corresponding to the electrical space;

[0009] An adapter seat body, wherein the adapter seat body is provided with a cover plate connecting portion, the adapter seat body is fixed to the accommodating hole through the cover plate connecting portion, and the adapter seat body is provided with a sealing member on one side in the height direction, and the sealing member is in sealing cooperation with the accommodating hole;

[0010] a conductive member, the conductive member being sealed and embedded in the adapter body and penetrating the adapter body along the height direction; the conductive member having a first end and a second end, the first end protruding from a side of the adapter body facing the battery space, and the second end protruding from a side of the adapter body facing the electrical space;

[0011] a battery space bus, the battery space bus being disposed on a side of the battery cover facing the battery space and electrically connected to the first end portion;

[0012] An electrical space bus is provided on a side of the battery cover facing the electrical space, and the electrical space bus is electrically connected to the second end.

[0013] Furthermore, the conductive member is a columnar conductive member, and the axial direction of the conductive member is extended and arranged parallel to the height direction.

[0014] Furthermore, the conductive member is a polygonal column-shaped conductive member, and an annular limiting groove is provided on the outer peripheral surface of the conductive member parallel to the height direction. The adapter body is also provided with a limiting protrusion that cooperates with the annular limiting groove.

[0015] Furthermore, a first blind hole is formed at the first end portion, a first fastener is installed in the first blind hole, and the first fastener is fixedly connected to the battery space bus; a second blind hole is formed at the second end portion, a second fastener is installed in the second blind hole, and the second fastener is fixedly connected to the electrical space bus.

[0016] Furthermore, the first blind hole and the second blind hole are coaxially arranged along the height direction, the first blind hole and the second blind hole are both threaded holes, and the first fastener and the second fastener are both threaded fasteners.

[0017] Furthermore, the adapter body is installed with a first protective cover corresponding to the first end, and the first protective cover is arranged on the outside of the first fastener; the adapter body is installed with a second protective cover corresponding to the second end, and the second protective cover is arranged on the outside of the second fastener.

[0018] Furthermore, the first protective cover is connected to the adapter body by a snap buckle, and the second protective cover is connected to the adapter body by a snap buckle.

[0019] Furthermore, the battery cover plate also has a length direction and a width direction, the length direction, the width direction, and the height direction intersect in pairs, and there are at least two conductive members, and any two of the conductive members are spaced apart along the length direction.

[0020] Furthermore, a connector base is provided on the adapter body, and the connector base and the conductive part are spaced apart along the width direction. The connector base is provided with a wiring harness connection hole on the side facing the battery space, and the connector base is provided with a connector jack on the side facing the electrical space.

[0021] In order to solve the above technical problems, the present invention provides a technical solution for an electrical device:

[0022] Electrical devices, including: battery packs;

[0023] A battery pack, comprising: a battery cover, the battery cover having a height direction, the battery cover having a battery space on one side of the height direction, the battery cover having an electrical space on the other side of the height direction, and the battery cover having a receiving hole corresponding to the electrical space;

[0024] An adapter seat body, wherein the adapter seat body is provided with a cover plate connecting portion, the adapter seat body is fixed to the accommodating hole through the cover plate connecting portion, and the adapter seat body is provided with a sealing member on one side in the height direction, and the sealing member is in sealing cooperation with the accommodating hole;

[0025] a conductive member, the conductive member being sealed and embedded in the adapter body and penetrating the adapter body along the height direction; the conductive member having a first end and a second end, the first end protruding from a side of the adapter body facing the battery space, and the second end protruding from a side of the adapter body facing the electrical space;

[0026] a battery space bus, the battery space bus being disposed on a side of the battery cover facing the battery space and electrically connected to the first end portion;

[0027] An electrical space bus is provided on a side of the battery cover facing the electrical space, and the electrical space bus is electrically connected to the second end.

[0028] Furthermore, the conductive member is a columnar conductive member, and the axial direction of the conductive member is extended and arranged parallel to the height direction.

[0029] Furthermore, the conductive member is a polygonal column-shaped conductive member, and an annular limiting groove is provided on the outer peripheral surface of the conductive member parallel to the height direction. The adapter body is also provided with a limiting protrusion that cooperates with the annular limiting groove.

[0030] Furthermore, a first blind hole is formed at the first end portion, a first fastener is installed in the first blind hole, and the first fastener is fixedly connected to the battery space bus; a second blind hole is formed at the second end portion, a second fastener is installed in the second blind hole, and the second fastener is fixedly connected to the electrical space bus.

[0031] Furthermore, the first blind hole and the second blind hole are coaxially arranged along the height direction, the first blind hole and the second blind hole are both threaded holes, and the first fastener and the second fastener are both threaded fasteners.

[0032] Furthermore, the adapter body is installed with a first protective cover corresponding to the first end, and the first protective cover is arranged on the outside of the first fastener; the adapter body is installed with a second protective cover corresponding to the second end, and the second protective cover is arranged on the outside of the second fastener.

[0033] Furthermore, the first protective cover is connected to the adapter body by a snap buckle, and the second protective cover is connected to the adapter body by a snap buckle.

[0034] Furthermore, the battery cover plate also has a length direction and a width direction, the length direction, the width direction, and the height direction intersect in pairs, and there are at least two conductive members, and any two of the conductive members are spaced apart along the length direction.

[0035] Furthermore, a connector base is provided on the adapter body, and the connector base and the conductive part are spaced apart along the width direction. The connector base is provided with a wiring harness connection hole on the side facing the battery space, and the connector base is provided with a connector jack on the side facing the electrical space.

[0036] Compared with the prior art, the battery pack and electrical device of the present invention have the following beneficial effects: the battery pack adopts a design form of a battery cover, an adapter seat, a seal, a conductive part, a battery space bus and an electrical space bus, and the adapter seat can be fixedly connected to the battery cover through the cover connecting part, and the adapter seat is also provided with a seal on one side in the height direction, which plays a reliable sealing role and prevents the formation of an assembly gap between the adapter seat and the battery cover, which may cause glue leakage.

[0037] The conductive element is sealed and embedded within the adapter body. This embedded design prevents any structural gaps between the conductive element and the adapter body, ensuring effective sealing and isolation between the battery and electrical spaces. Furthermore, the conductive element extends vertically through the adapter body, saving planar space within the battery pack while fully utilizing excess vertical space.

[0038] Furthermore, the first end of the conductive element protrudes from one side of the adapter body, forming an electrical connection point for the battery space busbar; the second end of the conductive element protrudes from the other side of the adapter body, forming an electrical connection point for the electrical space busbar. This embedded structure of the adapter body and conductive element ensures reliable electrical connection between the battery cell and electrical components such as the BDU and BMS, while also ensuring a sealed isolation between the battery space and the electrical space. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a diagram of the internal structure of the battery pack in an embodiment of the present utility model;

[0040] Figure 2 This is a schematic diagram of the assembly of the adapter body, the battery space bus, and the electrical space bus in the embodiment of the present utility model;

[0041] Figure 3 yes Figure 2 A schematic cross-sectional view of the intermediate connector body, the battery space bus, and the electrical space bus;

[0042] Figure 4 It is a three-dimensional schematic diagram of the adapter body and the conductive member in the embodiment of the utility model;

[0043] Figure 5 It is a side view schematic diagram of the adapter body and the conductive member in the embodiment of the utility model;

[0044] Figure 6 yes Figure 5 Schematic cross-sectional view at AA in the middle;

[0045] Figure 7 It is a three-dimensional schematic diagram of the conductive member in the embodiment of the present utility model;

[0046] Figure 8 It is a top view schematic diagram of the adapter body and the conductive member in the embodiment of the utility model;

[0047] Figure 9 yes Figure 8 Schematic cross-sectional view at the middle BB;

[0048] In the figure: 1-adapter seat, 11-cover connecting part, 12-seal, 13-limiting protrusion, 14-connector base, 15-wiring harness connection hole, 16-connector jack, 2-conductive member, 20-annular limiting groove, 21-first end, 22-second end, 23-first blind hole, 24-second blind hole, 25-first fastener, 26-second fastener, 27-first protective cover, 28-second protective cover, 3-battery space bus, 4-electrical space bus, 5-connector, 6-battery cover, 60-accommodation hole, 61-battery space, 62-electrical space, X-length direction, Y-width direction, Z-height direction. DETAILED DESCRIPTION

[0049] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like used in the present invention to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0052] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0053] like Figures 1 to 9 As shown, a battery pack of an embodiment of the present invention includes: a battery cover 6, an adapter body 1, a conductive part 2, a battery space bus 3 and an electrical space bus 4, the battery cover 6 has a height direction Z, and the battery cover 6 is provided with a battery space 61 on one side of the height direction Z, and the battery space 61 is used to accommodate battery cells, CCS components and BMS slave control components, etc.; the battery cover 6 is provided with an electrical space 62 on the other side of the height direction Z, and the electrical space 62 is used to accommodate BDU modules and BMS main control components, etc., and the battery cover 6 is provided with a accommodating hole 60 corresponding to the electrical space 62.

[0054] The adapter body 1 is provided with a cover plate connection portion 11, which secures the adapter body 1 to the receiving hole 60 via the cover plate connection portion 11. A sealing member 12 is provided on one side of the adapter body 1 in the height direction Z, and the sealing member 12 seals with the receiving hole 60. It should be noted that the cover plate connection portion 11 is a threaded connection, and the sealing member 12 is a sealing foam. When the adapter body 1 is secured to the receiving hole 60 using the threaded connection, the sealing foam is compressed between the battery cover 6 and the adapter body 1, thereby sealing and isolating the battery space 61 from the electrical space 62.

[0055] In other embodiments, to meet different usage requirements, the cover plate connection portion may also be in the form of a riveted or clipped connection, which can also reliably securely connect to the adapter body. Accordingly, the seal may also be a rubber pad or silicone pad, which can also seal and isolate the battery space from the electrical space.

[0056] The conductive member 2 is sealed and embedded in the adapter body 1, and the conductive member 2 passes through the adapter body 1 along the height direction Z. The conductive member 2 has a first end 21 and a second end 22. The first end 21 protrudes from the side of the adapter body 1 facing the battery space 61, and the second end 22 protrudes from the side of the adapter body 1 facing the electrical space 62; the battery space bus 3 is arranged on the side of the battery cover 6 facing the battery space 61, and the battery space bus 3 is electrically connected to the first end 21; the electrical space bus 4 is arranged on the side of the battery cover 6 facing the electrical space 62, and the electrical space bus 4 is electrically connected to the second end 22.

[0057] The battery pack adopts a design of a battery cover 6, an adapter body 1, a seal 12, a conductive part 2, a battery space bus 3 and an electrical space bus 4. The adapter body 1 can be fixedly connected to the battery cover through the cover connecting part 11, and the adapter body 1 is also provided with a seal 12 on one side of the height direction Z. The seal 12 plays a reliable sealing role to prevent the formation of an assembly gap between the adapter body 1 and the battery cover, which may cause glue leakage.

[0058] The conductive member 3 is sealed and embedded within the adapter body 2. This embedded design prevents the formation of a structural gap between the conductive member 2 and the adapter body 1, ensuring effective sealing and isolation between the battery space 61 and the electrical space 62. Furthermore, the conductive member 2 extends through the adapter body 1 in the height direction Z, saving planar space within the battery pack while fully utilizing the remaining height direction Z space.

[0059] Furthermore, the first end 21 of the conductive element 2 protrudes from the side of the adapter body 1 facing the battery compartment 61, forming an electrical connection point for the battery compartment bus 3. The second end 22 of the conductive element 2 protrudes from the side of the adapter body 1 facing the electrical compartment 62, forming an electrical connection point for the electrical compartment bus 4. This embedded structure of the adapter body 1 and the conductive element 2 ensures reliable electrical connection between the battery cell and electrical components such as the BDU and BMS, while also ensuring a sealed connection between the battery compartment 61 and the electrical compartment 62.

[0060] In this embodiment, the conductive member 2 is a columnar conductive member, with its axis extending parallel to the height direction Z. The columnar design of the conductive member 2 effectively reduces the planar space occupied by the conductive member 2. Specifically, the conductive member 2 is a polygonal columnar conductive member 2, and an annular retaining groove 20 is defined on the outer circumference of the conductive member 2 parallel to the height direction Z. The adapter body 1 is also provided with a retaining protrusion 13 that cooperates with the annular retaining groove 20.

[0061] On the one hand, during the locking and screwing process of the busbar, it is ensured that the conductive part 2 will not rotate relative to the adapter seat body 1 and loosen; on the other hand, the multiple annular limit grooves 20 further increase the interlocking contact area, thereby improving the bonding strength between the conductive part 2 and the adapter seat body 1, enhancing the stability of the conductive part 2 along the height direction Z, and ensuring that the conductive part 2 is not easily pulled out.

[0062] like Figure 7 As shown, the conductive member 2 is a hexagonal prism, which improves the secure fit between the conductive member 2 and the adapter body 1. In other embodiments, to meet different usage requirements, the conductive member may also adopt a cylindrical, triangular, or quadrangular prism design. Furthermore, axial or diagonal stripes may be provided on the cylindrical surface of the conductive member to similarly enhance the bond strength between the conductive member and the adapter body, preventing the conductive member from rotating relative to the adapter body and becoming loose during the tightening process.

[0063] It should be noted that the conductive element 2 and the adapter body 1 are assembled using an insert molding process, which effectively prevents glue from penetrating. The specific process involves placing an insert at a specific point in the mold, injecting molten plastic fluid into the mold, allowing it to cool and form within the mold, and then disassembling the mold to remove the finished product, ensuring that the insert is securely embedded in the plastic body.

[0064] As a further preferred embodiment, the first end 21 defines a first blind hole 23, into which a first fastener 25 is installed, and the first fastener 25 is fixedly connected to the battery space bus 3. The second end 22 defines a second blind hole 24, into which a second fastener 26 is installed, and the second fastener 26 is fixedly connected to the electrical space bus 4. The ends of the conductive member 2, respectively, are the first blind hole 23 and the second blind hole 24, ensuring that the conductive member 2 has a separate portion in the height direction Z, preventing the risk of seepage due to the presence of an internal through space. The blind holes and fasteners can also be used to secure the bus.

[0065] Specifically, the first blind hole 23 and the second blind hole 24 are coaxially arranged along the height direction Z. Both the first blind hole 23 and the second blind hole 24 are threaded holes, and both the first fastener 25 and the second fastener 26 are threaded fasteners. The threaded holes and threaded fasteners are simple to assemble and can achieve electrical connection and structural fixation of the battery space bus 3 and the electrical space bus 4.

[0066] In other embodiments, the first and second fasteners are not limited to threaded fasteners, but may also be rivet fasteners or interference fasteners. Rivet fasteners deform by pressure riveting and generate a fastening force with the blind hole, thereby securely connecting the busbar to the conductive member. Interference fasteners fit into the blind hole with strong interference force and generate a fastening force, thereby securely connecting the busbar to the conductive member.

[0067] A first protective cover 27 is mounted on the adapter body 1, corresponding to the first end 21. The first protective cover 27 covers the exterior of the first fastener 25. A second protective cover 28 is mounted on the adapter body 1, corresponding to the second end 22. The second protective cover 28 covers the exterior of the second fastener 26. The ends of the battery space bus 3 and the electrical space bus 4 are both exposed metal connectors. The first protective cover 24 shields and protects the connection between the battery space bus 3 and the conductive member 2, while the second protective cover 28 shields and protects the connection between the electrical space bus 4 and the conductive member 2. This prevents direct exposure of the metal surface, ensures subsequent electrical safety, prevents accidental contact or intrusion by foreign objects, and ensures a secure electrical connection.

[0068] Specifically, the first protective cover 27 is snap-connected to the adapter body 1, and the second protective cover 28 is snap-connected to the adapter body 1. For example, the adapter body 1 is provided with retaining edges corresponding to the first end 21 and the second end 22, respectively. The retaining edges serve as three-sided enclosures for the first end 21 and the second end 22. The first protective cover 27 and the second protective cover 28 are respectively hingedly connected to the adapter body 1, and the protective covers are provided with buckles, and the side surfaces of the retaining edges are provided with protrusions. The buckles and the protrusions snap-fit ​​together to ensure that the first protective cover 27 is securely fastened to the outside of the first end 21, and the second protective cover 28 is securely fastened to the outside of the second end 22. In addition, the hinged design of the protective covers can be omitted, and the purpose of snap-fit ​​assembly can also be achieved using only the buckle structure.

[0069] The battery cover 6 further has a length direction X and a width direction Y, wherein the length direction X, the width direction Y, and the height direction Z intersect in pairs. At least two conductive members 2 are provided, and any two conductive members 2 are spaced apart along the length direction X. One conductive member 2 serves as a positive electrode connection point, and the other conductive member 2 serves as a negative electrode connection point. Accordingly, the battery space bus 3 is divided into a positive electrode battery space bus and a negative electrode battery space bus, and the electrical space bus 4 is divided into a positive electrode electrical space bus and a negative electrode electrical space bus.

[0070] The adapter body 1 is also provided with a connector base 14, which is spaced apart from the conductive member 2 along the width direction Y. A wiring harness connection hole 15 is provided on the side of the connector base 14 facing the battery space 61, and a connector receptacle 16 is provided on the side of the connector base 14 facing the electrical space 62. The connector base 14 can be integrally formed with the adapter body 1. Subsequently, the connector 5 is inserted into the connector receptacle 16. The information collection and transmission wiring harness is inserted into the wiring harness connection hole 15 and electrically connected to the connector 5. The connector 5 is then connected to the BMS main control component in the electrical space 62 via the wiring harness, thereby achieving the purpose of effective transmission of electrical signals.

[0071] The connector base 14 blocks the flow of glue into the battery compartment, eliminating redundant sealing design, improving integration and structural compactness, and simplifying assembly procedures. In other embodiments, to meet different usage requirements, the connector base and adapter body can be assembled separately. Specifically, a process hole is opened in the adapter body, and the connector base is assembled in the process hole using a locking method, while ensuring an effective seal between the connector base and the adapter body.

[0072] An electrical device according to an embodiment of the present invention includes a battery pack. The battery pack is the same as the battery packs in the above-mentioned specific embodiments and will not be described in detail here.

[0073] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that: include: A battery cover plate, the battery cover plate having a height direction, the battery cover plate having a battery space on one side of the height direction, the battery cover plate having an electrical space on the other side of the height direction, and the battery cover plate having a receiving hole corresponding to the electrical space; An adapter seat body, wherein the adapter seat body is provided with a cover plate connecting portion, the adapter seat body is fixed to the accommodating hole through the cover plate connecting portion, and the adapter seat body is provided with a sealing member on one side in the height direction, and the sealing member is in sealing cooperation with the accommodating hole; A conductive member, wherein the conductive member is sealed and embedded in the adapter body, and the conductive member passes through the adapter body along the height direction; The conductive member has a first end and a second end, the first end protruding from a side of the adapter body facing the battery space, and the second end protruding from a side of the adapter body facing the electrical space; a battery space bus, the battery space bus being disposed on a side of the battery cover facing the battery space and electrically connected to the first end portion; An electrical space bus is provided on a side of the battery cover facing the electrical space, and the electrical space bus is electrically connected to the second end.

2. The battery pack according to claim 1, wherein: The conductive member is a columnar conductive member, and the axial direction of the conductive member is extended and arranged parallel to the height direction.

3. The battery pack according to claim 2, wherein: The conductive member is a polygonal column-shaped conductive member, and an annular limiting groove is provided on the outer peripheral surface of the conductive member parallel to the height direction. The adapter body is also provided with a limiting protrusion that matches the annular limiting groove.

4. The battery pack according to claim 1, wherein: The first end portion is provided with a first blind hole, in which a first fastener is installed, and the first fastener is fixedly connected to the battery space bus; the second end portion is provided with a second blind hole, in which a second fastener is installed, and the second fastener is fixedly connected to the electrical space bus.

5. The battery pack according to claim 4, characterized in that: The first blind hole and the second blind hole are coaxially arranged along the height direction. The first blind hole and the second blind hole are both threaded holes. The first fastener and the second fastener are both threaded fasteners.

6. The battery pack according to claim 4, characterized in that: The adapter body is equipped with a first protective cover corresponding to the first end, and the first protective cover is arranged outside the first fastener; the adapter body is equipped with a second protective cover corresponding to the second end, and the second protective cover is arranged outside the second fastener.

7. The battery pack according to claim 6, characterized in that: The first protective cover is connected to the adapter body by a buckle, and the second protective cover is connected to the adapter body by a buckle.

8. The battery pack according to claim 1, wherein: The battery cover plate also has a length direction and a width direction, wherein the length direction, the width direction and the height direction intersect with each other. There are at least two conductive members, and any two of the conductive members are spaced apart along the length direction.

9. The battery pack according to claim 8, characterized in that: A connector base is also provided on the adapter body. The connector base and the conductive member are spaced apart along the width direction. A wiring harness connection hole is provided on the side of the connector base facing the battery space, and a connector jack is provided on the side of the connector base facing the electrical space.

10. An electrical device, characterized in that: A battery pack comprising the battery pack according to any one of claims 1 to 9.

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