Battery pack

Abstract

The utility model relates to the technical field of new energy batteries, and discloses a battery pack, which comprises a box body provided with a first direction and a second direction which are intersected with each other, an accommodating cavity is arranged in the box body, and the box body is provided with a first opening communicated with the accommodating cavity in the first direction; the first cover body covers the first opening and is connected with the box body; the battery module is arranged in the accommodating cavity; and the electrical isolation plate is arranged between the first cover body and the battery module, the electrical isolation plate comprises a plurality of isolation sub-plates, the plurality of isolation sub-plates are arranged along the second direction, and two adjacent isolation sub-plates are detachably connected with each other. According to the battery pack provided by the utility model, the electrical isolation plate comprises the plurality of isolation sub-plates, and the adjacent isolation sub-plates are clamped with each other to assemble the electrical isolation plate with a larger size, so that the assembly operation is simple, the isolation sub-plates are smaller in size and easy to form, and the manufacturing difficulty of the electrical isolation plate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a battery pack. Background Art

[0002] In a battery pack, an electrical isolation board is generally required to carry components such as module connectors and acquisition modules to achieve electrical connection between the individual cells in the battery pack. However, for larger battery packs, the electrical isolation board is larger in size, making it difficult to form the mold and making the manufacturing process more difficult. Utility Model Content

[0003] The purpose of the utility model is to provide a battery pack that can reduce the difficulty of manufacturing an electrical isolation plate.

[0004] In order to achieve the above object, the utility model provides a battery pack, comprising:

[0005] The box body has a first direction and a second direction intersecting each other, the box body has a receiving cavity inside, and the box body is provided with a first opening in the first direction communicating with the receiving cavity;

[0006] A first cover body, which is disposed at the first opening and connected to the box body;

[0007] A battery module is disposed in the accommodating cavity;

[0008] An electrical isolation plate is disposed between the first cover and the battery module, and includes a plurality of isolation sub-plates, the plurality of isolation sub-plates are arranged along the second direction, and two adjacent isolation sub-plates are detachably connected to each other.

[0009] In some embodiments of the present application, the plurality of isolation sub-boards include:

[0010] First sub-board;

[0011] A second sub-plate, disposed on one side of the first sub-plate along the second direction;

[0012] The electrical isolation plate further comprises a first clamping portion and a second clamping portion, wherein the first clamping portion is arranged on one end of the first sub-board along the second direction toward the second sub-board, and the second clamping portion is arranged on one end of the second sub-board along the second direction toward the first sub-board, and the second clamping portion is clamped with the first clamping portion;

[0013] One of the first clamping portion and the second clamping portion is a clamping head, and the other is a clamping groove, and the clamping head and the clamping groove are clamped with each other.

[0014] In some embodiments of the present application, the buckle head includes an insert plate and a hook member, and the hook member is arranged on the surface of the insert plate;

[0015] The first sub-plate or the second sub-plate where the buckle slot is located has a hook hole, the hook hole is connected to the buckle slot and is arranged corresponding to the hook piece;

[0016] The plug plate is inserted into the buckle groove and the hook member is hooked in the hook hole to form a buckle connection between the buckle head and the buckle groove.

[0017] In some embodiments of the present application, the isolation sub-board includes:

[0018] First sub-board;

[0019] A second sub-plate, disposed on one side of the first sub-plate along the second direction;

[0020] The electrical isolation plate further comprises a first clamping portion and a second clamping portion, wherein the first clamping portion is arranged on one end of the first sub-board along the second direction toward the second sub-board, and the second clamping portion is arranged on one end of the second sub-board along the second direction toward the first sub-board;

[0021] A third sub-plate, disposed between the first sub-plate and the second sub-plate;

[0022] The third clamping parts are arranged on both ends of the third sub-board along the second direction and are respectively clamped with the first clamping part and the second clamping part to form a clamping connection between the second clamping part and the first clamping part.

[0023] In some embodiments of the present application:

[0024] The electrical isolation plate also includes a guide and limiting structure, which includes an insertion portion and a slot portion, and the insertion portion and the slot portion are respectively arranged on two adjacent isolation sub-plates. The insertion portion is inserted into the slot portion and guides the relative movement of the two adjacent isolation sub-plates along the second direction.

[0025] In some embodiments of the present application:

[0026] The guide limiting structure further includes a first limiting portion and a second limiting portion, wherein the first limiting portion is arranged on the inserting portion, and the second limiting portion is arranged on the slot portion, and the first limiting portion and the second limiting portion cooperate with each other to limit the relative movement of two adjacent isolation sub-plates in the third direction;

[0027] The first direction, the second direction and the third direction intersect each other.

[0028] In some embodiments of the present application:

[0029] The electrical isolation plate further comprises a support member, the support member is arranged at the end of each isolation sub-plate along the second direction, the support member is located on at least one end surface of the isolation sub-plate along the first direction, the support member contacts at least one end surface of the adjacent isolation sub-plate along the first direction, or two support members on two adjacent isolation sub-plates facing each other contact in the first direction, so as to limit the relative rotation of the two adjacent isolation sub-plates with the third direction as the axial direction;

[0030] The first direction, the second direction and the third direction intersect each other.

[0031] In some embodiments of the present application:

[0032] The battery module includes a shell, a second cover and a battery pack. The shell is arranged in the accommodating cavity. A cavity is arranged inside the shell and a second opening connected to the cavity is provided in the first direction. The second cover is covered at the second opening. The battery pack is arranged in the cavity. In the first direction, the electrical isolation plate is arranged between the second cover and the battery pack.

[0033] In some embodiments of the present application:

[0034] The electrical isolation plate further comprises a first limiter, which is arranged on each of the isolation sub-plates, and at least a part of the first limiter is located on one side of the second cover along the third direction to limit the relative movement of the second cover and the electrical isolation plate in the third direction;

[0035] The first direction, the second direction and the third direction intersect each other.

[0036] In some embodiments of the present application:

[0037] The electrical isolation plate also includes a second limiter, which is arranged on at least one of the isolation sub-plates, and at least a portion of the second limiter is located on one side of the second cover body along the second direction to limit the position of the second cover body in the second direction.

[0038] In some embodiments of the present application:

[0039] The electrical isolation plate further comprises a connecting piece, and the second cover body is connected to the isolation sub-plate via the connecting piece.

[0040] In some embodiments of the present application:

[0041] The isolation plate is provided with a connection hole, the position of the connection hole corresponds to the connection piece, and the connection piece is a snap button and is inserted into the connection hole to form a connection between the second cover and the isolation plate.

[0042] The utility model provides a battery pack, which has the following beneficial effects compared with the prior art:

[0043] The battery pack of the utility model includes a box body, a first cover body, a battery module and an electrical isolation plate. The electrical isolation plate includes a plurality of isolation sub-plates. Adjacent isolation sub-plates can be detachably connected to each other to be assembled into a larger electrical isolation plate. The assembly operation is simple, and the isolation sub-plates are small in size and easy to shape, which reduces the manufacturing difficulty of the electrical isolation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the structure of a battery pack according to an embodiment of the utility model.

[0045] Figure 2 It is a schematic diagram of the electrical isolation plate of the embodiment of the utility model when it is not assembled.

[0046] Figure 3 yes Figure 2 A magnified schematic diagram of center A.

[0047] Figure 4 yes Figure 2 A magnified schematic diagram of point B in the middle.

[0048] Figure 5 It is a schematic diagram of the electrical isolation plate after assembly according to an embodiment of the utility model.

[0049] Figure 6 yes Figure 5 Enlarged schematic diagram of point C in the middle.

[0050] Figure 7 yes Figure 5 Enlarged schematic diagram of point D in the middle.

[0051] Figure 8 yes Figure 2 Schematic diagram of the other side of the electrical isolation plate along the first direction Z.

[0052] Fig. 9 yes Figure 8 Enlarged schematic diagram of point E in the middle.

[0053] Fig.10 yes Figure 8 Enlarged schematic diagram of point F in the middle.

[0054] Fig.11 yes Figure 5 Schematic diagram of the other side of the electrical isolation plate along the first direction Z.

[0055] Fig.12 yes Fig.11 Enlarged schematic diagram of point G in the middle.

[0056] Fig.13 yes Fig.11 Enlarged schematic diagram of point H in the middle.

[0057] Fig.14 yes Figure 1 Enlarged schematic diagram of point I in the middle.

[0058] In the figure, 1, box body; 2, first opening; 4, electrical isolation plate; 5, battery module;

[0059] 11. accommodating cavity; 41. isolating sub-plate; 42. guiding limiting structure; 43. supporting member; 44. first limiting member; 45. second limiting member; 46. connecting member; 411. first sub-plate; 412. second sub-plate; 413. first clamping part; 414. second clamping part; 415. third sub-plate; 416. third clamping part; 417. connecting hole; 4181. plug-in plate; 4182. hook member; 421. inserting part; 422. slot part; 423. first limiting part; 424. second limiting part; 51. second cover body; Z, first direction; X, second direction; Y, third direction. DETAILED DESCRIPTION

[0060] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0061] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The term "parallel" in this application includes not only the absolute parallel situation, but also the generally parallel situation conventionally recognized in engineering, such as "parallel" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°; at the same time, "vertical" also includes not only the absolute vertical situation, but also the generally vertical situation conventionally recognized in engineering, such as "vertical" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distances or equal angles include not only the absolute equal situation, but also the generally equal situation conventionally recognized in engineering, that is, there may be a certain error, such as the state where the tolerance range is -1% to 1%.

[0064] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0065] For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0066] Please refer to Figure 1 A battery pack according to a preferred embodiment of the utility model includes a box body 1, a first cover body, a battery module 5 and an electrical isolation plate 4.

[0067] The box body 1 has a first direction Z and a second direction X intersecting each other, the box body 1 has a receiving cavity 11 inside, and the box body 1 is provided with a first opening 2 in the first direction Z that is connected to the receiving cavity 11;

[0068] In this embodiment, the height direction of the box body 1 is the first direction Z, the length direction of the box body 1 is the second direction X, and there is a third direction Y, and the width direction of the box body 1 is the third direction Y. The first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0069] The first cover is disposed at the first opening 2 and connected to the box body 1 .

[0070] The first cover is a cover of the box body 1 and is used to close the box body 1 .

[0071] The battery module 5 is disposed in the accommodating cavity 11 .

[0072] The battery module 5 can be a battery module or a battery pack, and can be configured as required in a specific implementation.

[0073] The electrical isolation plate 4 is disposed between the first cover and the battery module 5 . The electrical isolation plate 4 includes a plurality of isolation sub-plates 41 . The plurality of isolation sub-plates 41 are arranged along the second direction X, and two adjacent isolation sub-plates 41 are detachably connected to each other.

[0074] In the battery pack, the electrical isolation board 4 carries the connection piece and the acquisition module to achieve connection with the battery pack or single battery of the battery module 5, transmit data, and acquire relevant data such as voltage and temperature of the battery pack or single battery.

[0075] In this embodiment, the electrical isolation plate 4 is divided into multiple isolation sub-plates 41, and adjacent isolation sub-plates 41 are snap-fitted to each other to assemble into a larger electrical isolation plate 4. The assembly operation is simple, and the isolation sub-plates 41 are small in size and easy to shape, thereby reducing the manufacturing difficulty of the electrical isolation plate 4.

[0076] In some embodiments, the plurality of isolation sub-plates 41 include: a first sub-plate 411 , a second sub-plate 412 , a first clamping portion 413 , and a second clamping portion 414 .

[0077] The second sub-plate 412 is disposed on one side of the first sub-plate 411 along the second direction X.

[0078] The first clamping portion 413 is disposed on one end of the first sub-plate 411 along the second direction X toward the second sub-plate 412 .

[0079] The second clamping portion 414 is disposed on one end of the second sub-plate 412 along the second direction X toward the first sub-plate 411 , and the second clamping portion 414 is clamped with the first clamping portion 413 .

[0080] In this case, the number of the isolation sub-boards 41 is two, which are respectively recorded as a first sub-board 411 and a second sub-board 412 .

[0081] During the assembly of the electrical isolation plate 4 , the first sub-plate 411 and the second sub-plate 412 are first arranged along the second direction X, and then the first clamping portion 413 and the second clamping portion 414 are clamped together to achieve the clamping of the first sub-plate 411 and the second sub-plate 412 .

[0082] One of the first clamping portion 413 and the second clamping portion 414 is a clamping head, and the other is a clamping groove, and the clamping head and the clamping groove are clamped with each other.

[0083] Specifically, the first clamping portion 413 can be configured as a buckle head, and the second clamping portion 414 can be configured as a buckle slot. Of course, the first clamping portion 413 can also be configured as a buckle slot, and the second clamping portion 414 can be configured as a buckle head. After the buckle head is inserted into the buckle slot, the first clamping portion 413 and the second clamping portion 414 are connected.

[0084] Furthermore, the buckle head includes an insert plate 4181 and a hook member 4182, and the hook member 4182 is arranged on the surface of the insert plate 4181;

[0085] The first sub-plate 411 or the second sub-plate 412 where the buckle slot is located has a hook hole, which is connected to the buckle slot and is arranged corresponding to the hook member 4182;

[0086] The inserting plate 4181 is inserted into the buckle groove and the hook member 4182 is hooked in the hook hole to form a buckle connection between the buckle head and the buckle groove.

[0087] In this embodiment, the hook member 4182 is arranged on the plug plate 4181 near the edge and is located at one end of the plug plate 4181 in the insertion direction. When the plug plate 4181 is inserted into the buckle groove, the hook member 4182 moves together with the plug plate 4181 until the hook member 4182 moves to the position of the hook hole and cooperates with the hook hole, that is, the hook member 4182 is hooked in the hook hole to form a buckle connection between the buckle head and the buckle groove.

[0088] The isolation sub-plate 41 further includes a third sub-plate 415 and a third clamping portion 416. Figure 2-Figure 4 .

[0089] The third sub-plate 415 is disposed between the first sub-plate 411 and the second sub-plate 412 .

[0090] The third clamping portions 416 are disposed on both ends of the third split plate 415 along the second direction X and are respectively clamped with the first clamping portion 413 and the second clamping portion 414 to form a clamping connection between the second clamping portion 414 and the first clamping portion 413 .

[0091] In this case, the number of the isolation sub-boards 41 is three, namely a first sub-board 411 , a second sub-board 412 and a third sub-board 415 .

[0092] In the assembly operation of the electrical isolation plate 4, the first sub-plate 411, the third sub-plate 415 and the second sub-plate 412 are first arranged along the second direction X, and then the third clamping parts 416 at both ends of the third sub-plate 415 are clamped with the first clamping parts 413 and the second clamping parts 414 respectively, so as to realize the clamping of the first sub-plate 411, the third sub-plate 415 and the second sub-plate 412. Figure 5-7 .

[0093] Whether the specific structure of the third snap-fitting portion 416 is a structure related to the snap-fitting head or a structure related to the snap-fitting groove depends on the structure of the first snap-fitting portion 413 corresponding to the third snap-fitting portion 416, or the structure of the second snap-fitting portion 414 corresponding to the third snap-fitting portion 416, as long as they can match and realize snap-fitting.

[0094] In this embodiment, the first clamping portion 413 and the second clamping portion 414 are both configured as clamping heads, and the third clamping portion 416 is configured as a clamping groove, thereby forming a clamping connection.

[0095] The number of the third sub-plates 415 can also be multiple, all of which are disposed between the first sub-plate 411 and the second sub-plate 412 , and the third sub-plates 415 are sequentially disposed along the second direction X, and two adjacent third sub-plates 415 are also engaged with each other.

[0096] The electrical isolation plate 4 also includes a guide and limiting structure 42, which includes an insertion portion 421 and a slot portion 422. The insertion portion 421 and the slot portion 422 are respectively arranged on two adjacent isolation sub-plates 41. The insertion portion 421 is inserted into the slot portion 422 and guides the relative movement of the two adjacent isolation sub-plates 41 along the second direction X.

[0097] When two adjacent isolation sub-plates 41 are clamped together, the guide and limiting structure 42 can guide the movement direction of the two isolation sub-plates 41 to assist the clamping between the first clamping portion 413 and the second clamping portion 414 .

[0098] During the assembly operation of the electrical isolation plate 4, during the process of the first clamping portion 413 and the second clamping portion 414 being clamped together, that is, during the movement of the clamping head extending into the clamping groove, the insertion portion 421 is also gradually inserted into the slot portion 422, thereby guiding the movement of the two isolation panels 41 in the second direction X.

[0099] In this embodiment, the insertion portion 421 is disposed on the first sub-board 411, and the slot portion 422 is disposed on the second sub-board 412. In other embodiments, it is sufficient as long as it is disposed on two adjacent isolation sub-boards 41 and plays a guiding role.

[0100] For details, please refer to Figure 3 and Figure 4 The insertion portions 421 may be provided in plurality and distributed on both sides of the first clamping portion 413 along the third direction Y. The positions and quantities of the slot portions 422 on the adjacent isolation sub-plate 41 correspond to the insertion portions 421 .

[0101] The inserting portion 421 and the slot portion 422 may be disposed on any two adjacent isolation sub-plates 41 .

[0102] The guide limiting structure 42 further includes a first limiting portion 423 and a second limiting portion 424. The first limiting portion 423 is disposed on the inserting portion 421, and the second limiting portion 424 is disposed on the slot portion 422. The first limiting portion 423 and the second limiting portion 424 cooperate with each other to limit the relative movement between two adjacent isolation plates 41 in the third direction Y.

[0103] Please refer to Figure 8-10 The number of the first limiting portions 423 matches the number of the inserting portions 421 , and the number of the second limiting portions 424 matches the number of the slot portions 422 .

[0104] The first limiting portion 423 and the second limiting portion 424 are in the form of a card plate, and the second limiting portion 424 is in the form of a card slot. Of course, the second limiting portion 424 can also be in the form of a card plate, and the first limiting portion 423 is in the form of a card slot. When the card plate is inserted into the card slot, the shaking of the two isolation split plates 41 in the third direction Y can be limited, and the first clamping portion 413 and the second clamping portion 414 are assisted in the clamping connection.

[0105] During the clamping process of the first clamping portion 413 and the second clamping portion 414, the first limiting portion 423 moves with the insertion portion 421, and the second limiting portion 424 moves with the slot portion 422. Since the first limiting portion 423 and the second limiting portion 424 start to cooperate, the shaking of the two isolation panels 41 in the third direction Y can be limited.

[0106] Please refer to Figure 11-13 The electrical isolation plate 4 further includes a support member 43, which is disposed at the end of each isolation sub-plate 41 along the second direction X, and is located on at least one end surface of the isolation sub-plate 41 along the first direction Z. The support member 43 contacts at least one end surface of the adjacent isolation sub-plate 41 along the first direction Z, or two support members 43 on two adjacent isolation sub-plates 41 that are opposite to each other contact in the first direction Z, so as to limit the relative rotation of the two adjacent isolation sub-plates 41 with the third direction Y as the axial direction;

[0107] The supporting member 43 is in the shape of a plate, and can limit the relative rotation of the two isolation sub-plates 41 with the third direction Y as the axial direction, that is, limit the shaking of the two isolation sub-plates 41 in the first direction Z, assist the clamping between the first clamping portion 413 and the second clamping portion 414, and at the same time ensure the stability of the clamping structure of the two adjacent isolation sub-plates 41 after clamping.

[0108] Whether the supporting member 43 contacts at least one end face of the adjacent isolation panel 41 along the first direction Z, or two supporting members 43 on two adjacent isolation panels 41 that are opposite to each other contact in the first direction Z, the constraint between the two adjacent isolation panels 41 can be achieved.

[0109] In some embodiments, the battery module 5 includes a shell, a second cover body 51 and a battery pack. The shell is arranged in the accommodating cavity 11. A cavity is arranged inside the shell and a second opening connected to the cavity is arranged in the first direction Z. The second cover body 51 is covered at the second opening, and the battery pack is arranged in the cavity. In the first direction Z, the electrical isolation plate 4 is arranged between the second cover body 51 and the battery pack.

[0110] In this case, the battery module 5 is a battery module structure. The electrical isolation plate 4 is disposed inside the battery module 5 .

[0111] The electrical isolation plate 4 further includes a first stopper 44, which is disposed on each isolation sub-plate 41, and at least a portion of the first stopper 44 is located on one side of the second cover 51 along the third direction Y, so as to limit the relative movement of the second cover 51 and the electrical isolation plate 4 in the third direction Y;

[0112] The first limit member 44 serves as a limit reference in the third direction Y. When fixing the second cover body 51 , the first limit member 44 can quickly locate the position of the second cover body 51 in the third direction Y, which is convenient for workers to perform assembly operations.

[0113] A plurality of first limiting members 44 may be provided, and the first limiting members 44 may be arranged at intervals along the edge of the second cover body 51 .

[0114] The electrical isolation plate 4 also includes a second limiter 45, which is arranged on at least one isolation sub-plate 41. At least a portion of the second limiter 45 is located on one side of the second cover body 51 along the second direction X to limit the position of the second cover body 51 in the second direction X.

[0115] The second limit member 45 serves as a limit reference in the second direction X. When fixing the second cover body 51, the second limit member 45 can quickly locate the position of the second cover body 51 in the second direction X. The second limit member 45 cooperates with the first limit member 44 to quickly locate the position of the second cover body 51 in the second direction X and the third direction Y, which is convenient for workers to perform assembly operations.

[0116] A plurality of second limiting members 45 may also be provided, and the second limiting members 45 may be arranged at intervals along the edge of the second cover body 51 .

[0117] The electrical isolation plate 4 further includes a connecting piece 46 , and the second cover 51 is connected to the isolation sub-plate 41 via the connecting piece 46 .

[0118] Since the electrical isolation plate 4 in this embodiment is assembled from a plurality of isolation sub-plates 41 , when being fixed, each isolation sub-plate 41 is connected to the second cover body 51 to ensure the installation stability between the electrical isolation plate 4 and the second cover body 51 .

[0119] The isolation plate 41 is provided with a connection hole 417 , the position of which corresponds to the connection member 46 . The connection member 46 is a snap button and is inserted into the connection hole 417 to form a connection between the second cover 51 and the isolation plate 41 .

[0120] After the second cover body 51 is quickly positioned, the position of the connecting hole 417 corresponds to the position of the mounting hole reserved on the second cover plate, and the snap is pressed in to connect the second cover body 51 and the isolation sub-plate 41 .

[0121] 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 substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack, characterized in that: include: A box body (1) having a first direction (Z) and a second direction (X) intersecting each other, the box body (1) having a receiving cavity (11) inside, and the box body (1) having a first opening (2) in communication with the receiving cavity (11) in the first direction (Z); A first cover body, which is arranged at the first opening (2) and connected to the box body (1); A battery module (5) is arranged in the accommodating cavity (11); An electrical isolation plate (4) is arranged between the first cover body and the battery module (5), the electrical isolation plate (4) comprising a plurality of isolation sub-plates (41), the plurality of isolation sub-plates (41) being arranged along the second direction (X), and two adjacent isolation sub-plates (41) being detachably connected to each other.

2. The battery pack according to claim 1, characterized in that: The isolation sub-plate (41) comprises: First sub-board (411); A second sub-plate (412) is arranged on one side of the first sub-plate (411) along the second direction (X); The electrical isolation plate (4) further comprises a first clamping portion (413) and a second clamping portion (414), wherein the first clamping portion (413) is arranged on one end of the first sub-plate (411) along the second direction (X) toward the second sub-plate (412), and the second clamping portion (414) is arranged on one end of the second sub-plate (412) along the second direction (X) toward the first sub-plate (411), and the second clamping portion (414) is clamped with the first clamping portion (413); One of the first clamping portion (413) and the second clamping portion (414) is a clamping head, and the other is a clamping groove, and the clamping head and the clamping groove are clamped with each other.

3. The battery pack according to claim 2, characterized in that: The buckle head comprises an inserting plate (4181) and a hook (4182), wherein the hook (4182) is arranged on the surface of the inserting plate (4181); The first sub-plate (411) or the second sub-plate (412) where the buckle slot is located has a hook hole, the hook hole is connected to the buckle slot and is arranged corresponding to the hook member (4182); The inserting plate (4181) is inserted into the buckle groove and the hooking member (4182) is hooked in the hooking hole, forming a buckle connection between the buckle head and the buckle groove.

4. The battery pack according to claim 1, characterized in that: The isolation sub-plate (41) comprises: First sub-board (411); A second sub-plate (412) is arranged on one side of the first sub-plate (411) along the second direction (X); The electrical isolation plate (4) further comprises a first clamping portion (413) and a second clamping portion (414), wherein the first clamping portion (413) is arranged on one end of the first sub-plate (411) along the second direction (X) toward the second sub-plate (412), and the second clamping portion (414) is arranged on one end of the second sub-plate (412) along the second direction (X) toward the first sub-plate (411); A third sub-plate (415), arranged between the first sub-plate (411) and the second sub-plate (412); The third clamping portion (416) is arranged on both ends of the third split plate (415) along the second direction (X) and is respectively clamped to the first clamping portion (413) and the second clamping portion (414) to form a clamping connection between the second clamping portion (414) and the first clamping portion (413).

5. The battery pack according to claim 1, characterized in that: The electrical isolation plate (4) further comprises a guide and limiting structure (42), wherein the guide and limiting structure (42) comprises an insertion portion (421) and a slot portion (422), wherein the insertion portion (421) and the slot portion (422) are respectively arranged on two adjacent isolation sub-plates (41), and the insertion portion (421) is inserted into the slot portion (422) and guides the relative movement of the two adjacent isolation sub-plates (41) along the second direction (X).

6. The battery pack according to claim 5, characterized in that: The guide limiting structure (42) further comprises a first limiting portion (423) and a second limiting portion (424), wherein the first limiting portion (423) is arranged on the inserting portion (421), and the second limiting portion (424) is arranged on the slot portion (422), and the first limiting portion (423) and the second limiting portion (424) cooperate with each other to limit the relative movement between the two adjacent isolation plates (41) in the third direction (Y); The first direction (Z), the second direction (X) and the third direction (Y) intersect each other.

7. The battery pack according to claim 1, characterized in that: The electrical isolation plate (4) further comprises a supporting member (43), the supporting member (43) being arranged at the end of each isolation sub-plate (41) along the second direction (X), the supporting member (43) being located on at least one end face of the isolation sub-plate (41) along the first direction (Z), the supporting member (43) being in contact with at least one end face of the adjacent isolation sub-plate (41) along the first direction (Z), or two supporting members (43) on two adjacent isolation sub-plates (41) that are opposite to each other are in contact in the first direction (Z), so as to limit the relative rotation of the two adjacent isolation sub-plates (41) with the third direction (Y) as the axial direction; The first direction (Z), the second direction (X) and the third direction (Y) intersect each other.

8. The battery pack according to claim 1, characterized in that: The battery module (5) comprises a shell, a second cover (51) and a battery pack, the shell being arranged in the accommodating cavity (11), a cavity being arranged inside the shell and a second opening being arranged in the first direction (Z) and communicating with the cavity, the second cover (51) being arranged to cover the second opening, the battery pack being arranged in the cavity, and the electrical isolation plate (4) being arranged between the second cover (51) and the battery pack in the first direction (Z).

9. The battery pack according to claim 8, characterized in that: The electrical isolation plate (4) further comprises a first limiting member (44), the first limiting member (44) being arranged on each of the isolation sub-plates (41), and at least a portion of the first limiting member (44) being located on one side of the second cover body (51) along a third direction (Y) so as to limit the relative movement of the second cover body (51) and the electrical isolation plate (4) in the third direction (Y); The first direction (Z), the second direction (X) and the third direction (Y) intersect each other.

10. The battery pack according to claim 8, characterized in that: The electrical isolation plate (4) further comprises a second position-limiting member (45), wherein the second position-limiting member (45) is arranged on at least one of the isolation sub-plates (41), and at least a portion of the second position-limiting member (45) is located on one side of the second cover body (51) along the second direction (X) so as to limit the position of the second cover body (51) in the second direction (X).

11. The battery pack according to claim 8, characterized in that: The electrical isolation plate (4) further comprises a connecting piece (46), and the second cover body (51) is connected to the isolation sub-plate (41) via the connecting piece (46).

12. The battery pack according to claim 11, characterized in that: The isolation plate (41) is provided with a connection hole (417), the position of the connection hole (417) corresponds to the connection piece (46), and the connection piece (46) is a snap button and is inserted into the connection hole (417) to form a connection between the second cover body (51) and the isolation plate (41).

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