CN219553815U - BDU device and battery pack - Google Patents

Abstract

The utility model belongs to the technical field of batteries, and discloses a BDU device and a battery pack, wherein the battery pack comprises a BUD device, the BDU device comprises a base, a socket and a limiting structure, the socket is fixedly arranged on an installation part of the base through the limiting structure, the limiting structure comprises a limiting piece and a clamping piece, and the limiting piece is clamped with the socket to limit the movement of the socket along a first direction; the clamping piece comprises a body part and at least two first sliding parts, the at least two first sliding parts are arranged on the body part at intervals along the second direction, the socket is connected with the at least two first sliding parts in a sliding manner along the first direction, and the clamping piece can limit the movement of the socket along the second direction and the third direction. The arrangement can improve the stability of the socket fixed in the BDU, has strong adaptability, and can be directly added into the prior BDU device, thereby having low cost.

Description

BDU device and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a BDU device and a battery pack.

Background

The battery cutting unit (BatteryDisconnectUnit, BDU) is used as an energy control unit in the battery pack, an interface socket connected with the outside is generally arranged in the BDU, and the socket always shakes in the assembly stage when the wiring is plugged and pulled out, so that the difficulty of an operator in plugging an external plug into the socket in the BDU is increased, and the socket can be damaged if the operation is careless.

Prior art is disclosed in the early patent of CN110762487a limit structure of a socket, which realizes the fixation of a socket connector by arranging a boss and a limit rib, prevents the socket connector from falling off by the pretightening force of the limit rib, and can effectively prevent the socket connector from loosening. However, the socket mounting part of the BDU shell is designed into various grooves and limit rib structures, and a certain pretightening force is required to be provided for the limit ribs, most of the prior BDU shells are plastic products so as to insulate electric parts inside the BDU, and if the BDU shells are arranged, certain manufacturing errors exist, and the cost is high; aiming at the problem that the BDU which is used at present cannot be directly added and needs to be subjected to mold opening again, the replacement cost is increased, and the problem of the prior BDU cannot be solved.

Therefore, there is a need to design a limit structure to solve the technical problems that the socket in the BDU is easy to shake and the used BDU cannot be replaced at low cost in the prior art.

Disclosure of Invention

An object of the present utility model is to provide a BDU device, which can improve the stability of fixing a socket in a BDU, facilitate the assembly of the socket, and have low cost.

Another object of the present utility model is to provide a battery pack that can improve the stability of the socket fixed in the BDU, has high adaptability, and can be directly added to the existing BDU device at low cost.

To achieve the purpose, the utility model adopts the following technical scheme:

the BDU device comprises a base, a socket and a limiting structure, wherein the base is provided with an installation part; the socket is fixedly arranged on the mounting part of the base through the limiting structure, and the limiting structure comprises:

the limiting piece is clamped on the socket to limit the movement of the socket along the first direction; and

the clamping piece comprises a body part and at least two first sliding parts, wherein the at least two first sliding parts are arranged on the body part at intervals along a second direction, the socket is connected with the at least two first sliding parts in a sliding manner along the first direction, the clamping piece can limit the movement of the socket along the second direction and a third direction, and the first direction, the second direction and the third direction are mutually perpendicular.

Optionally, the socket is provided with a mounting groove, the mounting groove is provided with a first groove wall and a second groove wall at intervals along the first direction, and two side walls of the limiting piece along the first direction are respectively abutted against the first groove wall and the second groove wall.

Optionally, the clamping piece further includes a limiting block, where the limiting block is disposed between two adjacent first sliding portions; the socket is provided with a mounting groove and a clamping block along the first direction at intervals, the mounting groove is provided with a first groove wall and a second groove wall along the first direction at intervals, the limiting piece is abutted to the first groove wall, and the limiting block is abutted to the clamping block.

Optionally, the socket is provided with at least two second sliding parts, the second sliding parts are arranged in one-to-one correspondence with the first sliding parts, one of the first sliding parts and the second sliding parts is provided with a sliding groove, the other one is provided with a sliding block, and the sliding block is slidably connected with the sliding groove.

Optionally, the limiting structure further includes a fixing member, one end of the fixing member is mounted on the mounting portion of the base, and the other end of the fixing member is fixedly connected to the clamping member.

Optionally, the mounting portion is provided with a mounting hole, the fixing member includes an abutment portion, and the abutment portion includes:

an insertion portion having one end connected to the clip, the insertion portion being inserted into the mounting hole; and

and one end of the movable part is connected with the other end of the inserting part, the other end of the movable part extends towards the clamping piece, and the movable part and the inserting part are arranged at a preset angle.

Optionally, the fixing piece further includes a buffer portion, and the buffer portion is disposed between the abutting portion and the clamping piece.

Optionally, the buffer portion has an arc structure facing the abutting portion, and a dimension of the buffer portion along the second direction is greater than a diameter of the mounting hole.

Optionally, the limiting part and the mounting part are integrally formed, and the clamping part is mounted on the mounting part.

Optionally, the fastening member and the limiting member are integrally formed, a surface of the limiting member facing the socket is a first mounting surface, a surface of the first sliding portion facing the socket is a second mounting surface, a surface of the body portion facing the socket is a third mounting surface, a distance between the first mounting surface and the third mounting surface in the third direction is greater than a distance between the second mounting surface and the third mounting surface in the third direction, and the fastening member is mounted on the mounting portion.

The battery pack comprises the BDU device.

The utility model has the beneficial effects that:

the utility model provides a BDU device and a battery pack, wherein two first sliding parts in a clamping piece are arranged at intervals along a second direction, and the first sliding parts are connected with a socket in a sliding manner to limit the movement of the socket in the second direction and the third direction; the limiting piece is clamped to the socket to limit the movement of the socket in the first direction, and then the limiting structure can realize the omnibearing limiting fixation of the socket. The structure can avoid bad assembly caused by shaking of the socket when an operator works, improves the assembly efficiency, and can be directly applied to the used BDU device, and has high adaptability and low cost.

Drawings

FIG. 1 is an exploded view of a portion of a BDU device according to an embodiment of the utility model;

fig. 2 is a schematic structural view of a first limiting structure according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a first spacing structure and an insert according to an embodiment of the present utility model in one direction after installation;

FIG. 4 is a schematic structural view of a second limiting structure according to an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a second spacing structure and an insert according to an embodiment of the present utility model in one direction after installation;

fig. 6 is a schematic structural view of a third limiting structure according to an embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view of a third spacing structure and an insert according to an embodiment of the present utility model in one direction after installation;

FIG. 8 is a schematic cross-sectional view of a spacing structure and another direction of an insert according to an embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a socket according to an embodiment of the present utility model.

In the figure:

10. a limiting piece; 11. a first mounting surface;

20. a clamping piece; 21. a first sliding portion; 211. a second mounting surface; 22. a limiting block; 23. a body portion; 231. a third mounting surface;

30. a fixing member; 31. an abutting portion; 311. an insertion portion; 312. a movable part; 32. a buffer section;

200. an upper cover; 400. a socket; 410. a socket head; 411. a second sliding part; 412. a clamping block; 420. a socket tail; 421. a mounting groove; 4211. a first groove wall; 4212. a second groove wall;

500. a base; 510. a mounting part; 511. and (5) mounting holes.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1, this embodiment provides a BDU device, this BDU device includes base 500, socket 400 and limit structure, and socket 400 passes through limit structure fixed set up on the installation department 510 of base 500, can realize fixing socket 400 on base 500 steadily, and socket 400 rocks when avoiding the operation personnel operation and causes bad assembly, has improved assembly efficiency, and can directly apply to in the BDU device that has used, the suitability is high, with low costs.

Optionally, the BDU device further includes an electrical component, where the electrical component is disposed inside the base 500, one end of the socket 400 is connected to the electrical component, and the other end is plugged with an external connector, so that current and other information of the electrical component inside the BDU device can be transmitted to an external control center (in this embodiment, the external control center refers to a control center in the battery pack) through the connector.

Further optionally, the BDU device further includes an upper cover 200, where the upper cover 200 is detachably connected to the base 500, so that a closed space is formed inside the BDU device for protecting the electrical components and the socket 400. It is understood that the high voltage and low voltage connections of the electrical components are all prior art and will not be described in detail herein.

In this embodiment, the first direction refers to the X direction in fig. 1, the second direction refers to the Y direction in fig. 1, the third direction refers to the Z direction in fig. 1, and the X direction, the Y direction, and the Z direction are perpendicular to each other, and are described in the following.

Specifically, to achieve the above effect, as shown in fig. 2 to 7, the above-mentioned limiting structure includes a limiting member 10 and a clamping member 20, where the limiting member 10 is clamped to the socket 400 to limit the movement of the socket 400 along the X direction; the clamping piece 20 comprises a body part 23 and at least two first sliding parts 21, the at least two first sliding parts 21 are arranged on the body part 23 at intervals along the Y direction, the socket 400 is connected to the at least two first sliding parts 21 in a sliding manner along the X direction, and the clamping piece 20 can limit the movement of the socket 400 along the Y direction and the Z direction.

In the BDU device of the present embodiment, the two first sliding portions 21 in the clamping member 20 are disposed at intervals along the Y direction, and the first sliding portions 21 are slidably connected to the socket 400, so as to limit the movement of the socket 400 in the Y direction and the Z direction; the limiting piece 10 is clamped to the socket 400 to limit the movement of the socket 400 along the X direction, so that the limiting structure can realize the omnibearing limiting fixation of the socket 400. The structure can avoid bad assembly caused by shaking of the socket 400 when an operator works, improves the assembly efficiency, and can be directly applied to the used BDU device, and has high adaptability and low cost.

In an alternative embodiment, as shown in fig. 2 to 5, the socket 400 is provided with a mounting groove 421, and a first groove wall 4211 and a second groove wall 4212 are disposed on the mounting groove 421 at intervals along the X direction, and two side walls of the limiting member 10 along the X direction are respectively abutted against the first groove wall 4211 and the second groove wall 4212. That is, the limiting member 10 is clamped in the mounting groove 421, so that two side walls of the limiting member 10 along the X direction can be abutted on the first groove wall 4211 and the second groove wall 4212 of the mounting groove 421, and limiting of the limiting member 10 to the socket 400 along the X direction can be achieved. In this embodiment, the second groove wall 4212 is in a slope structure, and two sides of the limiting member 10 along the X direction are respectively abutted against one groove wall and one slope structure, so as to realize the limitation of the limiting member 10 on the socket 400 along the X direction, and further realize the limitation of the limiting member 10 on the socket 400 along the X direction. Optionally, a relief groove is further formed in the middle of the first groove wall 4211, so that the socket 400 can be slidably connected to the clamping member 20 along the first direction.

In another alternative embodiment, as shown in fig. 6 and 7, the clamping member 20 further includes a limiting block 22, where the limiting block 22 is disposed between two adjacent first sliding portions 21; the socket 400 is provided with a mounting groove 421 and a clamping block 412 at intervals along the X direction, the mounting groove 421 is provided with a first groove wall 4211 and a second groove wall 4212 at intervals along the X direction, and the limiting piece 10 is abutted against the first groove wall 4211; the limiting block 22 abuts against the clamping block 412. With the above arrangement, if the X direction is divided into the +x direction and the-X direction, the block 412 can abut against the stopper 22 during the sliding of the first sliding portion 21 and the second sliding portion 411 along the X direction, so that the socket 400 can be limited in one of the +x direction and the-X direction, and the stopper 10 limits the other of the +x direction and the-X direction; namely, the limiting piece 10 and the clamping piece 20 are matched for use, so that the movement of the socket 400 along the X direction is limited, the volume of the limiting piece 10 is greatly reduced, and materials are saved.

In this embodiment, as shown in fig. 2 to 7, the socket 400 is provided with at least two second sliding portions 411, and the second sliding portions 411 are disposed in one-to-one correspondence with the first sliding portions 21, and the first sliding portions 21 are slidably connected to the second sliding portions 411 along the X direction. The structure can realize the sliding connection of the socket 400 and the clamping part, and can realize the limit effect of the socket 400 along the Y direction and the Z direction. In this embodiment, two second sliding portions 411 are provided, two first sliding portions 21 are correspondingly provided, and the two sliding portions can limit the socket 400 along the Y direction and the Z direction, so that the cost is low, and no resource waste is caused.

Optionally, the first sliding portion 21 and the second sliding portion 411 in this embodiment are adapted mortise-tenon structures, which can implement mortise-tenon connection.

Specifically, as shown in fig. 8, one of the first sliding portion 21 and the second sliding portion 411 is provided as a chute, and the other is provided as a slider, and the slider is slidably connected to the chute, so that the sliding connection between the first sliding portion 21 and the second sliding portion 411 can be achieved. In the present embodiment, the first sliding portion 21 is a slider, and the second sliding portion 411 is a chute, so as to achieve sliding connection between the two.

Further, referring to fig. 8, the above-mentioned limiting structure further includes a fixing member 30, one end of the fixing member 30 is mounted on the mounting portion 510 of the base 500, and the other end is fixedly connected to the fastening member 20, so that the connection between the limiting structure and the base 500 can be achieved, and further, the connection between the socket 400 and the base 500 can be achieved. The fixing member 30 includes an abutting portion 31, and the abutting portion 31 can be connected to the base 500, so that the socket 400 and the base 500 can be connected.

Alternatively, as shown in fig. 1, the mounting portion 510 of the base 500 is provided with a mounting hole 511, and the abutment portion 31 can be inserted and fixed in the mounting hole 511.

Specifically, the abutting portion 31 includes an insertion portion 311 and a movable portion 312, one end of the insertion portion 311 is connected to the clip 20, and the insertion portion 311 is inserted into the mounting hole 511; one end of the movable portion 312 is connected to the other end of the inserting portion 311, the other end extends towards the clamping member 20, the movable portion 312 and the inserting portion 311 are arranged at a preset angle, the movable portion 312 can be inserted into the mounting portion 510 along with the inserting portion 311, and the other end of the movable portion 312 can be abutted to the base 500. When the abutting part 31 passes through the mounting part 510 of the base 500, the abutting part 31 can slide into the mounting hole 511 along the peripheries of the inserting part 311 and the movable part 312, the other end of the movable part 312 can be pressed to be in contact with the inserting part 311, so that the abutting part 31 can be mounted to the mounting hole 511 of the base 500, then the movable part 312 is not pressed after the abutting part 31 passes through the mounting part 510, the other end of the movable part 312 can abut against the base 500, the fixing piece 30 cannot be taken out from the mounting hole 511, and the stable connection between the fixing piece 30 and the base 500 is ensured.

Alternatively, the predetermined angle is an acute angle, and the acute angle is set so that the movable portion 312 can be inserted into the mounting hole 511 along with the insertion portion 311. Preferably, the preset angle is smaller than 45 degrees, so that smoothness in the inserting process can be improved, and the limit structure can be pulled out conveniently in the later stage. The preset angle is, for example, 15 degrees.

Optionally, the abutting portion 31 is of an arrow-shaped structure, that is, an inverted cone-shaped structure, when the abutting portion 31 passes through the mounting portion 510 of the base 500, the abutting portion 31 can slide along the cone shape through the mounting portion 510, the arrow-shaped structure after the abutting portion 31 passes through the mounting portion 510 makes the fixing member 30 unable to be taken out from the mounting portion 510, and the arrow-shaped structure itself provides the abutting force, no additional parts are needed, and the number of parts is reduced while the stable connection between the fixing member 30 and the base 500 is ensured. It should be understood that the abutting portion 31 may be a fir tree structure or the like capable of achieving the same effect, and is not particularly limited herein.

Further, as shown in fig. 8, the fixing member 30 further includes a buffer portion 32, the buffer portion 32 is disposed between the abutting portion 31 and the clamping member 20, the buffer portion 32 plays a certain role in buffering when the abutting portion 31 is inserted into or pulled out of the mounting hole 511, and the buffer portion 32 can abut against the mounting portion 510 when the abutting portion 31 is inserted into the mounting hole 511, so that the stability of mounting the limiting structure and the base 500 is improved. Preferably, the buffer portion 32 has an arc structure curved toward the abutting portion 31, and the size of the buffer portion 32 along the Y direction is larger than the diameter of the mounting hole 511, and the buffer portion 32 can provide a certain elasticity when the abutting portion 31 is inserted into or pulled out of the mounting hole 511, so that the socket 400 arranged on the limiting structure can be prevented from being damaged due to repeated insertion and pulling of the limiting structure.

In an alternative embodiment, as shown in fig. 2, 3, 6 and 7, the clamping member 20 and the limiting member 10 are integrally formed, and the clamping member 20 is connected to the base 500. That is, the clamping member 20 and the limiting member 10 are integrally formed, one surface of the limiting member 10 facing the socket 400 is a first mounting surface 11, one surface of the first sliding portion 21 facing the socket 400 is a second mounting surface 211, one surface of the body portion 23 facing the socket 400 is a third mounting surface 231, the distance between the first mounting surface 11 and the third mounting surface 231 along the Z direction is greater than the distance between the second mounting surface 211 and the third mounting surface 231 along the Z direction, and the clamping member 20 is mounted on the mounting portion 510.

In another alternative embodiment, as shown in fig. 4 and 5, the limiting member 10 is integrally formed with the mounting portion 510, and the locking member 20 is connected to the mounting portion 510. That is, the clamping member 20 and the limiting member 10 are two parts, and the limiting member 10 is directly formed on the mounting portion 510, so that when the socket 400 is mounted, only the socket 400 needs to be fixed on the clamping member 20, and then the clamping member 20 is mounted at the mounting hole 511 on the base 500, and the corresponding mounting groove 421 of the socket 400 and the limiting member 10 on the base 500 are clamped to complete the omnibearing limiting of the socket 400 by the limiting structure.

Alternatively, the above-mentioned limit structure is made of a plastic member having elasticity, so that the socket 400 is conveniently mounted to the limit structure. And limit structure installs to the base 500, also is equipped with corresponding installation department 510 on the base 500, through the fixed connection of installation department 510 and limit structure, the condition that rocks can not appear in socket 400, and this limit structure can satisfy the full-scale spacing to socket 400.

In this embodiment, as shown in fig. 9, the socket 400 includes a socket head portion 410 and a socket tail portion 420, the socket head portion 410 is connected to the socket tail portion 420, the socket head portion 410 is used for plugging with an external connector, the socket tail portion 420 is used for connecting electrical components in the base 500, so that current and other information of the electrical components in the BDU are transmitted to an external control center (in this embodiment, the external control center refers to a control center in the battery pack) through the connector.

Specifically, as shown in fig. 3, 5 and 7, the socket tail 420 is clamped to the limiting member 10, and the socket head 410 is slidably connected to at least two first sliding portions 21 along the X direction. That is, the limiting member 10 is used for limiting the socket tail 420, the clamping member 20 is used for limiting the socket head 410, the mounting groove 421 is disposed on the socket tail 420, the second sliding portion 411, the clamping block 412 and other structures are disposed on the socket head 410, and the socket head 410 and the socket tail 420 are transited through the second groove wall 4212.

The embodiment also provides a battery pack, which includes the BDU device, and has the beneficial effects of the battery cell structure of any one of the above schemes, and is not described herein again.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (11)

1. The BDU device is characterized by comprising a base (500), a socket (400) and a limiting structure, wherein the base (500) is provided with an installation part (510); the socket (400) is fixedly arranged on the mounting part (510) of the base (500) through the limiting structure, and the limiting structure comprises:

   the limiting piece (10) is clamped to the socket (400) so as to limit the movement of the socket (400) along the first direction; and

   the clamping piece (20), the clamping piece (20) include body portion (23) and two at least first sliding part (21), two at least first sliding part (21) along the second direction interval set up in on body portion (23), socket (400) are followed first direction sliding connection in two at least first sliding part (21), clamping piece (20) can restrict socket (400) are followed the motion of second direction and third direction, first direction second direction with the two mutual perpendicular settings of third direction.
2. 2. A BDU device according to claim 1 characterized in that the socket (400) is provided with a mounting groove (421), the mounting groove (421) is provided with a first groove wall (4211) and a second groove wall (4212) at intervals along the first direction, and two side walls of the limiting member (10) along the first direction are respectively abutted to the first groove wall (4211) and the second groove wall (4212).
3. 3. A BDU device according to claim 1 characterized in that the snap-in element (20) further comprises a stopper (22), said stopper (22) being arranged between two adjacent first sliding parts (21); the socket (400) is provided with a mounting groove (421) and a clamping block (412) along the first direction at intervals, the mounting groove (421) is provided with a first groove wall (4211) and a second groove wall (4212) along the first direction at intervals, the limiting piece (10) is abutted to the first groove wall (4211), and the limiting piece (22) is abutted to the clamping block (412).
4. 4. A BDU device according to claim 1 characterized in that the socket (400) is provided with at least two second sliding parts (411), and that the second sliding parts (411) are arranged in a one-to-one correspondence with the first sliding parts (21), one of the first sliding parts (21) and the second sliding parts (411) being provided as a slide groove, the other being provided as a slide block, the slide block being slidingly connected to the slide groove.
5. 5. The BDU device according to claim 1, characterized in that the limiting structure further includes a fixing member (30), one end of the fixing member (30) is mounted on the mounting portion (510) of the base (500), and the other end is fixedly connected to the clamping member (20).
6. 6. A BDU device according to claim 5 characterized in that the mounting portion (510) is provided with a mounting hole (511), the fixing member (30) includes an abutment portion (31), the abutment portion (31) includes:

   an insertion portion (311) having one end connected to the clip (20), the insertion portion (311) being inserted into the mounting hole (511); and

   and one end of the movable part (312) is connected with the other end of the inserting part (311), the other end of the movable part extends towards the clamping piece (20), and the movable part (312) and the inserting part (311) are arranged at a preset angle.
7. 7. A BDU device according to claim 6 characterized in that the fixing member (30) further comprises a buffer portion (32), the buffer portion (32) being arranged between the abutment portion (31) and the clamping member (20).
8. 8. A BDU device according to claim 7, characterized in that the buffer portion (32) is an arc-shaped structure toward the abutment portion (31), and a dimension of the buffer portion (32) in the second direction is larger than a diameter of the mounting hole (511).
9. 9. A BDU device according to any one of claims 1-8 characterized in that the limiting member (10) is integrally formed with the mounting portion (510), and the clamping member (20) is mounted on the mounting portion (510).
10. 10. A BDU device according to any one of claims 1-8 characterized in that the clamping member (20) and the limiting member (10) are integrally formed, a surface of the limiting member (10) facing the socket (400) is a first mounting surface (11), a surface of the first sliding portion (21) facing the socket (400) is a second mounting surface (211), a surface of the body portion (23) facing the socket (400) is a third mounting surface (231), and a distance between the first mounting surface (11) and the third mounting surface (231) in the third direction is greater than a distance between the second mounting surface (211) and the third mounting surface (231) in the third direction, and the clamping member (20) is mounted on the mounting portion (510).
11. 11. A battery pack comprising a BDU device according to any one of claims 1-10.