CN220306669U

CN220306669U - Switching support part, battery module and battery package

Info

Publication number: CN220306669U
Application number: CN202321507369.2U
Authority: CN
Inventors: 周元; 周红权; 徐宇虹
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2024-01-05
Anticipated expiration: 2033-06-13

Abstract

The utility model discloses a transfer support component, which comprises a transfer protection seat; the conductive connecting piece is fixed on the switching protection seat; and the switching protection cover is provided with a busbar switching interface which is used for plugging a busbar, so that the busbar is fixedly connected with the conductive connecting piece, and the switching protection cover is covered on the switching protection seat. Meanwhile, a battery module applying the switching support component and a battery pack applying the battery module are also disclosed, and the problem that the existing switching support lacks a high-voltage protection structure is solved.

Description

Switching support part, battery module and battery package

Technical Field

The utility model relates to the field of batteries, in particular to a transfer support component, a battery module and a battery pack.

Background

The new energy automobile is supported by the great force of the country, and the battery technology has a great progress. In the existing battery pack, due to factors such as space limitation, a transfer support needs to be arranged between modules in a module structure design or between modules in a CTP design in series, and two bus bars between the two modules in series are in butt joint on the transfer support. The bus connecting the two modules in series is typically a high voltage bus, i.e. a high voltage bus needs to be able to load and transfer more power.

However, the existing transfer support lacks a high-voltage protection structure, and the current flowing through the high-voltage bus bar and the transfer support can generate electromagnetic radiation, which may cause high-voltage interference to the battery pack and the power utilization device (such as electronic equipment in the electric automobile) electrically connected with the battery pack.

Disclosure of Invention

In order to overcome at least one of the defects in the prior art, the utility model provides a transfer support component, a battery module and a battery pack, which solve the problem that the existing transfer support lacks a high-voltage protection structure.

The utility model adopts the technical proposal for solving the problems that:

an adapter bracket component comprising:

a switching protection seat;

the conductive connecting piece is fixed on the switching protection seat;

the switching protective cover is provided with a busbar switching interface, and the busbar switching interface is used for being inserted with a busbar, so that the busbar is fixedly connected with the conductive connecting piece, and the switching protective cover covers the switching protective seat.

Further, an installation guide part is arranged at the opening part of the switching protective cover.

Further, one of the switching protective cover and the switching protective seat is provided with a fixed bayonet, the other one of the switching protective cover and the switching protective seat is provided with a buckling protrusion, and the buckling protrusion is in buckling connection with the fixed bayonet.

Further, the conductive connecting piece comprises a conductive part and a plurality of connecting parts, wherein the connecting parts are fixedly connected with the conductive part, and each connecting part can be connected with a first fastener for installing and fixing the corresponding busbar on the conductive part;

be provided with spacing groove and a plurality of fastening constant head tank on the switching protection seat, a plurality of fastening constant head tank all with the spacing groove is linked together, electrically conductive portion inlay in the spacing groove, and each connecting portion all with each fastening constant head tank grafting cooperation.

Further, a clamping protrusion is arranged on the groove wall of the limiting groove, a clamping opening is arranged on the conducting part, and the clamping opening and the clamping protrusion are correspondingly arranged.

Further, the connecting portion comprises an extending section, a first fastening head, a second fastening head and a connecting threaded hole, the first fastening head and the second fastening head are arranged at two ends of the extending section, the connecting threaded hole extends from the first fastening head to the second fastening head along the extending direction of the extending section, and the first fastening head is fixedly connected with the conducting portion.

Further, a fastening installation part is arranged on the switching protection seat and is used for connecting a second fastening piece, so that the switching protection seat is installed and fixed in the battery pack.

Further, a fastening mounting hole is formed in the fastening mounting portion, a shaft sleeve is arranged in the fastening mounting hole, and the end portion of the shaft sleeve extends out of a port of the fastening mounting hole to prevent torque attenuation of the second fastening piece.

The utility model also discloses a battery module, which comprises:

a busbar;

in the above-mentioned transfer support member, the bus bar passes through the transfer protection cover of the transfer support member and is connected to the conductive connection member of the transfer support member.

The utility model also discloses a battery pack comprising the battery module.

In summary, the switching support component, the battery module and the battery pack provided by the utility model have the following technical effects:

through the switching protective cover that is equipped with female row's switching interface, make the busbar can extend to the inside of switching protective cover to be connected with conductive connection spare, realize the switching purpose of switching support part. Meanwhile, electromagnetic radiation generated by current flowing through the bus bar and the conductive connecting piece is blocked by the switching protective cover, so that the problem that the existing switching support lacks a high-voltage protective structure is solved.

Drawings

FIG. 1 is a first block diagram of an adapter bracket assembly according to the present utility model;

FIG. 2 is a second assembly block diagram of an adapter bracket component of the present utility model;

FIG. 3 is a schematic view of an installation cross-section of an adapter bracket component of the present utility model;

FIG. 4 is a schematic view of the overall structure of an adapter bracket component according to the present utility model;

FIG. 5 is a schematic view of a first structure of a conductive connector according to the present utility model;

FIG. 6 is a schematic diagram of a second structure of the conductive connector of the present utility model;

FIG. 7 is a schematic perspective view of the structure of the adaptor guard seat according to the present utility model;

FIG. 8 is a first schematic view of the structure of the rotation protection cover of the present utility model;

fig. 9 is a second structural schematic diagram of the rotation protection cover of the present utility model.

Icon: the device comprises a 1-switching protection seat, a 11-fastening installation part, a 12-limiting groove, a 13-fastening positioning groove, a 14-clamping protrusion, a 2-switching protection cover, a 21-busbar protection cavity, a 22-busbar switching connector, a 23-first protection wall, a 24-second protection wall, a 25-installation guide part, a 3-conductive connecting piece, a 31-conductive part, a 32-connecting part, a 321-first fastening head, a 322-second fastening head, a 323-extension section, a 324-connecting threaded hole, a 33-clamping notch, a 4-busbar, a 41-first busbar, a 42-second busbar, a 51-fixing bayonet, a 52-fastening protrusion, a 6-shaft sleeve, a 71-first fastening piece and a 72-second fastening piece.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Fig. 1 is a first assembly structure diagram of an adaptor support component of the present utility model, showing a connection relationship between a busbar 4 and the adaptor support component, fig. 3 is a schematic sectional installation view of the adaptor support component of the present utility model, specifically please refer to fig. 1 and 3, the present utility model discloses an adaptor support component, which comprises an adaptor protection seat 1, a conductive connector 3 and an adaptor protection cover 2, wherein the conductive connector 3 is fixed on the adaptor protection seat 1, the adaptor protection cover 2 is provided with a busbar switching interface 22, the inside of the adaptor protection cover 2 is provided with a busbar protection cavity 21, the busbar protection cavity 21 is communicated with the outside of the adaptor protection cover 2 through the busbar switching interface 22,

the busbar connection 22 serves here for plugging the busbar 4, i.e. the busbar 4 can extend through the busbar connection 22 into the interior of the busbar protection chamber 21. When the switching protection cover 2 is covered on the switching protection seat 1, the busbar 4 can be fixedly connected with the conductive connecting piece 3 inside the busbar protection cavity 21. At this time, a large current flows along the bus bar 4 to the conductive connecting piece 3 inside the bus bar protection cavity 21, and is transmitted to the other bus bar 4 through the conductive connecting piece 3, so that the purpose of switching between the two bus bars 4 is achieved through the conductive connecting piece 3.

One of the two bus bars 4 defining the transfer is the first bus bar 41, and the other bus bar 4 is the second bus bar 42, as shown in fig. 3, the end of the first bus bar 41, the end of the second bus bar 42 and the conductive connecting piece 3 are all within the coverage area of the bus bar protection cavity 21, so that the electromagnetic radiation generated by the heavy current flowing from the first bus bar 41 to the conductive connecting piece 3 and the heavy current flowing from the conductive connecting piece 3 to the second bus bar 42 is mostly blocked within the bus bar protection cavity 21, thereby being capable of avoiding the problem that the electromagnetic radiation generated by the heavy current generates high-voltage interference on other electrical components in the battery pack.

In addition, the assembly personnel or the test personnel can be prevented from contacting the end part of the first busbar 41, the end part of the second busbar 42 and the conductive connecting piece 3, the purpose of preventing electric shock is achieved, and substances such as dust and water drops in the battery pack can be prevented from accumulating on the surface of the conductive connecting piece 3 to influence the conductive effect. Meanwhile, when the battery pack is applied under the working condition of high-frequency vibration or the battery pack is subjected to pressure loss, the connection position of the busbar 4 and the conductive connecting piece 3 is effectively protected from being damaged under the action of the switching protection cover 2.

It should be noted that, the adaptor protection seat 1 and the adaptor protection cover 2 are both made of non-metal materials, especially, the adaptor protection cover 2 is preferably made of nylon materials, and the material is high in mechanical strength, high in impact resistance, toughness and heat resistance, and meanwhile, due to the fact that the volume resistance of the nylon materials is high and breakdown voltage resistance is high, the adaptor protection cover 2 has excellent electrical insulation performance, and therefore the adaptor protection cover 2 has good high-voltage protection effect.

It should be further noted that, referring to the overall schematic structure of the adaptor support component of the present utility model shown in fig. 4, the busbar transferring port 22 on the adaptor protective cover 2 is preferably a rectangular through hole, but is not limited to a rectangular through hole, the busbar transferring port 22 may be an oval through hole or a waist-shaped hole, or the busbar transferring port 22 may be other shapes according to the choice and design of the busbar 4.

In this embodiment, specifically, referring to the first structural schematic diagram of the transfer protection cover 2 of the present utility model shown in fig. 8 and the second structural schematic diagram of the transfer protection cover 2 of the present utility model shown in fig. 9, the side wall of the transfer protection cover 2 perpendicular to the depth direction H of the busbar protection cavity 21 is defined as a first protection wall 23, the side wall perpendicular to the first protection wall 23 is a second protection wall 24, and the plurality of busbar transfer ports 22 are preferably uniformly arranged on the second protection wall 24, and besides the above preferred arrangement manner, the busbar transfer ports 22 may also be arranged on the first protection wall 23, or both the first protection wall 23 and the second protection wall 24 are provided with busbar transfer ports 22 according to the design of the battery structure.

As a further preferable mode of the present embodiment, the opening portion of the joint protection cover 2 is provided with the mounting guide portion 25. As shown in fig. 8 and 9, two mounting guide portions 25 are disposed on opposite sides of the second protection wall 24, and each mounting guide portion 25 includes an extension portion 323 connected to the second protection wall 24 and a guide portion extending in a first direction opposite to the depth direction H of the busbar protection cavity 21. The extension 323 is connected with the guide section, and preferably the extension 323, the guide section and the second protection wall 24 are integrally formed.

Like this, as shown in fig. 4, in the process of closing the switching protection cover 2 to the switching protection seat 1, under the limiting action of the installation guiding portion 25, the switching protection seat 1 is constrained between two guiding segments, and when the switching protection cover 2 and the switching protection seat 1 are dislocated, the switching protection cover 2 will not be separated from the switching protection seat 1. When the transfer cover 2 moves to the position where the extension 323 of the mounting guide 25 contacts the end of the transfer cover seat 1, only translational fine adjustment along the extension direction of the extension end is required until the transfer cover 2 is aligned with and covers the transfer cover seat 1. Therefore, the assembly difficulty between the switching protective cover 2 and the switching protective seat 1 is reduced by installing the guide part 25, and the process step of aligning the switching protective cover 2 with the switching protective seat 1 is omitted, so that the assembly efficiency of the switching support component is improved.

In addition, when the transfer protection cover 2 needs to be detached from the transfer protection seat 1, an assembler can apply an acting force on the installation guide part 25, compared with the application of the acting force on the second protection wall 24, the transfer protection seat 1 is detached by using friction force, the stress is more stable, the slipping phenomenon is not easy to occur, and the assembler can detach the transfer protection cover 2 from the transfer protection seat 1 more easily and stably.

It should be noted that the number of the installation guides 25 is not limited to four installation guides 25, but may be two, three, five, six, or the like. Further, the extension 323 is preferably perpendicular to the second protection wall 24, or the extension 323 is used to connect one end of the second protection wall 24 and extends obliquely to the outside of the opening portion. The guide section is preferably perpendicular to the extension section 323, or one end of the guide section for connecting the extension section 323 extends obliquely to the outside of the opening portion. Of course, the installation guiding portion 25 may have only the extending section 323, and the extending section 323 is used for connecting one end of the second protection wall 24 and extending obliquely towards the outside of the opening portion, so that the function of guiding the assembly of the switching protection cover 2 to the switching protection seat 1 can be achieved, and meanwhile, the purpose of quickly detaching the switching protection cover 2 as a stress portion can be achieved.

As a further preferable mode of this embodiment, in order to avoid that the adapting protective cover 2 covered on the adapting protective seat 1 is easy to separate from the adapting protective seat 1 under the condition of vibration, etc., please specifically refer to fig. 4, 7, 8 and 9, wherein fig. 7 shows a schematic perspective view of the adapting protective seat 1 according to the present utility model.

The adapter protective cover 2 is provided with a fixed bayonet 51, the fixed bayonet 51 is positioned on the second protective wall 24, the adapter protective seat 1 is provided with a buckling protrusion 52, and the buckling protrusion 52 is buckled and connected with the fixed bayonet 51, so that the adapter protective cover 2 is not easy to separate from the adapter protective seat 1 under the matching action of the buckling protrusion 52 and the fixed bayonet 51.

Besides the mode, the switching protection cover 2 is provided with the buckling protrusion 52, the buckling protrusion 52 is located on the second protection wall 24, the switching protection seat 1 is correspondingly provided with the fixing bayonet 51, and the buckling protrusion 52 is buckled and connected with the fixing bayonet 51, so that the purpose that the switching protection cover 2 is stably assembled on the switching protection seat 1 can be achieved.

As a further preferable mode of this embodiment, as shown in fig. 2, 3, 4 and 7, the adaptor protection base 1 is provided with a fastening mounting portion 11, and the fastening mounting portion 11 is used for connecting with the second fastening member 72 so that the adaptor protection base 1 is mounted and fixed in the battery pack.

It should be noted that the fastening installation part 11 is integrally formed with the adaptor guard seat 1, and the second fastening part 72 is preferably, but not limited to, a bolt. In this way, the second fastener 72 penetrates the fastening installation portion 11 and is connected to the battery pack, and when the adaptor support component is required to be overhauled or replaced, the adaptor protection seat 1 can be detached from the battery pack, so that the purpose that the adaptor protection seat 1 is detachably connected with the battery pack is achieved.

Preferably, the fastening installation parts 11 are arranged on two opposite sides of the switching protection seat 1, so that the installation stress of the switching protection seat 1 is more balanced and stable, and the installation of the switching protection seat 1 is firmer. The switching protection seat 1 can be mounted on a plastic frame of the battery module, can also be mounted on an end plate of the battery module, or can be mounted on other components in the battery pack according to the structural design of the battery.

As a further preferable mode of this embodiment, as shown in fig. 4 and 7, the fastening mounting portion 11 is provided with a fastening mounting hole, the inside of the fastening mounting hole is provided with a sleeve 6, and the end of the sleeve 6 extends out of the port of the fastening mounting hole for preventing the torque of the second fastening member 72 from being attenuated.

It should be added that the distance between the end of the sleeve 6 and the port of the fastening mounting hole is between 0.45 mm and 0.55 mm, preferably 0.5 mm. The sleeve 6 is made of a metal material, such as a steel material. The torque attenuation described above refers to a phenomenon in which the torque of the second fastener 72 decreases after the tightening work is completed. Factors that contribute to torque attenuation of the second fastener 72 include: because the fastening installation part 11 is made of non-metal materials, particularly plastics, the fastening installation part 11 has certain elasticity, and the surface roughness of the fastening installation part 11 is large in the production and manufacturing process, the second fastening piece 72 is easy to deform on the surface of the fastening installation part 11 when being screwed down, and the phenomenon of local embedding is caused.

In the above preferred manner, the stress of the second fastener 72 during the tightening process is not directly applied to the fastening mounting portion 11, so that on one hand, the problem of torque attenuation of the second fastener 72 due to too high assembly speed of the second fastener 72 during the screwing mounting is avoided, and the problem of torque attenuation of the second fastener 72 can be improved in terms of technology. On the other hand, the surface roughness of the end portion of the sleeve 6 is smaller than that of the fastening attachment portion 11, and the hardness of the material of the sleeve 6 is greater than that of the fastening attachment portion 11, thereby improving the problem of torque attenuation of the second fastener 72 in terms of material and structure.

The existing transfer support is mainly characterized in that a copper nut is embedded on a plastic support, then fixing holes of two copper bars are aligned and stacked and then are fastened by a flange bolt, the torque of the bolt gradually declines in the use process of a battery pack due to factors such as flatness and the like on the stacking surface of the two copper bars, the series resistance between the copper bars is increased, the internal resistance of the whole battery system is increased if the resistance is light, the dischargeable energy is reduced, and the ablation of the support or the interruption of power output of the battery pack is caused if the resistance is heavy, so that the driving safety is influenced.

As a preferred mode of this embodiment, please specifically refer to fig. 3, 5, 6 and 7, wherein fig. 5 shows a first schematic structural diagram of the conductive connecting member 3 in the present utility model; fig. 6 shows a second schematic structural view of the conductive connector 3 according to the present utility model.

The above-mentioned conductive connecting member 3 includes a conductive portion 31 and two connecting portions 32, wherein the two connecting portions 32 are fixedly connected with the conductive portion 31, and each connecting portion 32 can be connected with a first fastener 71 for fixing the corresponding busbar 4 on the conductive portion 31.

The switching protection seat 1 is provided with a limit groove 12 and two fastening locating grooves 13, the two fastening locating grooves 13 are communicated with the limit groove 12, the conductive part 31 is embedded in the limit groove 12, and each connecting part 32 is in plug-in fit with each fastening locating groove 13.

Specifically, the conductive portion 31 is preferably made of brass, but is not limited to brass, and may be made of other conductive materials. The two connecting portions 32 are oppositely arranged, and the two connecting portions 32 are located on the central symmetry line of the conductive portion 31, so that the production and processing of the conductive connecting piece 3, the production and processing of the switching protection seat 1 and the assembly between the conductive connecting piece 3 and the switching protection seat 1 are easier and more convenient. It should be noted that the number of the connection portions 32 is not limited to two, and may be three, four, five, etc. according to the design and the design requirement of the battery, and the number of the fastening and positioning slots 13 is three, four, five, etc. according to the design and the design requirement of the battery, and in addition, the plurality of connection portions 32 may be distributed in other manners, such as two adjacent connection portions 32 are staggered.

It should be further noted that, the conductive portion 31 and the connection portion 32 are preferably integrally cast, and of course, the conductive portion 31 and the connection portion 32 may be welded and connected, so that the purpose of stable current transmission on the conductive connection member 3 can be achieved.

Each connecting part 32 of the conductive connecting piece 3 is aligned with the corresponding fastening and positioning groove 13 of the switching protection seat 1, and the connecting part 32 of the conductive connecting piece 3 is inserted into the corresponding fastening and positioning groove 13 of the switching protection seat 1 until the conductive connecting piece 3 is embedded into the limiting groove 12. Each busbar 4 is then mounted to the corresponding connection portion 32 by the first fastener 71, so that the purpose of switching between the plurality of busbars 4 by the conductive connection member 3 is achieved.

As a further preferable mode of this embodiment, as shown in fig. 3, 5 and 6, the groove wall of the limiting groove 12 is provided with a clamping protrusion 14, the conductive portion 31 is provided with a clamping opening 33, and the clamping opening 33 is arranged corresponding to the clamping protrusion 14.

Specifically, the shape and size of the notch 33 are the same as those of the protrusion 14. Preferably, as shown in fig. 3, a plurality of clamping protrusions 14 are disposed on the wall of the limiting groove 12, the plurality of clamping protrusions 14 are uniformly distributed along the length direction of the limiting groove 12, and a plurality of clamping openings 33 are disposed on the conductive portion 31 correspondingly, each clamping opening 33 corresponds to each clamping protrusion 14, and at least one edge of the conductive portion 31 and at least one wall of the limiting groove 12 are shaped like saw teeth or saw teeth, so that the conductive portion 31 is more firmly embedded in the limiting groove 12. It should be noted that, besides the plurality of the clamping protrusions 14 being uniformly distributed along the groove length direction of the limiting groove 12, the plurality of clamping protrusions 14 may be uniformly distributed along the groove width direction of the limiting groove 12.

The connecting portion 32 includes an extension section 323, a first fastening head 321, a second fastening head 322, and a connection threaded hole 324, wherein the first fastening head 321 and the second fastening head 322 are disposed at two ends of the extension section 323, the connection threaded hole 324 extends from the first fastening head 321 to the second fastening head 322 along the extending direction of the extension section 323, and the first fastening head 321 is fixedly connected with the conductive portion 31. Preferably, the extension 323, the first fastening head 321 and the second fastening head 322 are integrally formed.

In this way, by the first fastening head 321 and the second fastening head 322 being matched, the risk of reducing the torque of the first fastening member 71 can be effectively reduced, so that the threaded connection between the first fastening member 71 and the connection threaded hole 324 is firmer. In addition, the outer diameter of the first fastening head 321 and the outer diameter of the second fastening head 322 are both adapted to the diameter of the fastening positioning groove 13, so that the outer side wall of the first fastening head 321 and the outer side wall of the second fastening head 322 are both in contact with the groove wall of the fastening positioning groove 13, so that the connecting portion 32 can be firmly connected in the fastening positioning groove 13, and the purpose of more stable assembly between the busbar 4 and the conductive connecting piece 3 and between the conductive connecting piece 3 and the switching protection seat 1 is achieved.

In addition, the inventors also disclose a battery module including:

a busbar 4;

the above-mentioned transfer support member, the bus bar 4 passes through the transfer shield cover 2 of the transfer support member and is connected to the conductive connection member 3 of the transfer support member.

Meanwhile, the inventor also discloses a battery pack comprising the battery module.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. An adapter bracket assembly comprising:

a switching protection seat (1);

the conductive connecting piece (3), the said conductive connecting piece (3) is fixed to the said switching protection seat (1);

the bus bar is characterized by comprising a switching protective cover (2), wherein a bus bar switching interface (22) is arranged on the switching protective cover (2), and the bus bar switching interface (22) is used for being connected with a bus bar (4) in a plugging mode, so that the bus bar (4) is fixedly connected with the conductive connecting piece (3), and the switching protective cover (2) is covered on the switching protective seat (1).

2. The transfer abutment member as claimed in claim 1 wherein: an installation guide part (25) is arranged at the opening part of the switching protective cover (2).

3. The transfer abutment member according to claim 1 or 2, wherein: one of the switching protective cover (2) and the switching protective seat (1) is provided with a fixed bayonet (51), the other switching protective cover (2) and the switching protective seat (1) is provided with a clamping protrusion (52), and the clamping protrusion (52) is in buckling connection with the fixed bayonet (51).

4. The transfer abutment member as claimed in claim 1 wherein: the conductive connecting piece (3) comprises a conductive part (31) and a plurality of connecting parts (32), wherein the connecting parts (32) are fixedly connected with the conductive part (31), and each connecting part (32) can be connected with a first fastener (71) for installing and fixing the corresponding busbar (4) on the conductive part (31);

be provided with spacing groove (12) and a plurality of fastening constant head tank (13) on switching protection seat (1), a plurality of fastening constant head tank (13) all with spacing groove (12) are linked together, electrically conductive portion (31) inlay in spacing groove (12), and each connecting portion (32) all with each fastening constant head tank (13) grafting cooperation.

5. The transfer abutment member of claim 4 wherein: the groove wall of the limiting groove (12) is provided with a clamping protrusion (14), the conducting part (31) is provided with a clamping opening (33), and the clamping opening (33) and the clamping protrusion (14) are correspondingly arranged.

6. The transfer abutment member of claim 4 or 5 wherein: the connecting portion (32) comprises an extending section (323), a first fastening head (321), a second fastening head (322) and connecting threaded holes (324), wherein the first fastening head (321) and the second fastening head (322) are arranged at two ends of the extending section (323), the connecting threaded holes (324) extend from the first fastening head (321) to the second fastening head (322) along the extending direction of the extending section (323), and the first fastening head (321) is fixedly connected with the conducting portion (31).

7. The transfer abutment member according to claim 1 or 2, wherein: the switching protection seat (1) is provided with a fastening installation part (11), and the fastening installation part (11) is used for connecting a second fastening piece (72), so that the switching protection seat (1) is installed and fixed in the battery pack.

8. The transfer abutment member of claim 7 wherein: the fastening installation part (11) is provided with a fastening installation hole, a shaft sleeve (6) is arranged in the fastening installation hole, and the end part of the shaft sleeve (6) extends out of a port of the fastening installation hole so as to prevent torque attenuation of the second fastening piece (72).

9. A battery module, characterized in that: comprising the following steps:

a busbar (4);

the transfer abutment part of any one of claims 1 to 8, said buss bar (4) passing through the transfer shield cover (2) of said transfer abutment part and being connected to the conductive connection (3) of said transfer abutment part.

10. A battery pack, characterized in that: comprising the battery module according to claim 9.