CN216085195U

CN216085195U - Bus bar support, bus bar assembly and battery module

Info

Publication number: CN216085195U
Application number: CN202121604739.5U
Authority: CN
Inventors: 田原松
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-03-18
Anticipated expiration: 2031-07-14

Abstract

The utility model is suitable for the technical field of batteries, and provides a bus bar bracket, which comprises: the bracket comprises a bracket body, wherein the bracket body is provided with an accommodating groove and an installation hole arranged beside the accommodating groove, and the accommodating groove is used for accommodating a bus bar; the fastening piece comprises a clamping part and a butting part which are connected, the clamping part is detachably assembled in the mounting hole, and one side of the butting part extends to the upper part of the accommodating groove and butts the bus bar in the accommodating groove. The bus bar support can stably fix the bus bar and prevent the bus bar from moving. The utility model also provides a bus bar assembly and a battery module.

Description

Bus bar support, bus bar assembly and battery module

Technical Field

The utility model belongs to the technical field of batteries, and particularly relates to a bus bar support, a bus bar assembly and a battery module.

Background

In the battery module, a plurality of bus bars are generally mounted on a bus bar holder, and the bus bar holder and the bus bars are placed as an assembly part on the press-stacked battery module.

The conventional bus bar support is usually an injection molding piece or a plastic sucking piece, the length of the battery module is usually more than 590mm, and if the bus bar support is the injection molding piece, the size of the bus bar support is larger, the price of a mold is higher, and the weight of the mold is heavier; if the bus bar support is a plastic sucking piece, the weight is lighter and the cost of the die is lower. FIG. 1 illustrates a blister-formed bus bar support. As shown in fig. 1, the bus bar holder formed by suction molding has only a groove for receiving the bus bar, and cannot fix the bus bar thereto.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bus bar support, a bus bar assembly and a battery module, which can stably fix a bus bar.

An embodiment of a first aspect of the present invention provides a busbar support comprising:

the bracket comprises a bracket body, wherein the bracket body is provided with an accommodating groove and an installation hole arranged beside the accommodating groove, and the accommodating groove is used for accommodating a bus bar;

the fastening piece comprises a clamping part and a butting part which are connected, the clamping part is detachably assembled in the mounting hole, and one side of the butting part extends to the upper part of the accommodating groove and butts the bus bar in the accommodating groove.

Through adopting above-mentioned technical scheme, the busbar support includes support body and fastener, is equipped with holding tank and mounting hole on the support body, and the fastener is including the card portion of holding that is connected and support portion, because the card portion of holding of fastener can be fixed in the mounting hole, the portion of holding of supporting of fastener can the butt busbar simultaneously, consequently, can fix the busbar on the support body through the fastener steadily, prevents that the busbar from removing and droing, helps improving battery module's performance. The bus bar support is simple in structure and can be a plastic-absorbing piece, and the problem that a bus bar cannot be fixed by the plastic-absorbing bus bar support is solved.

In one embodiment of the present application, the clamping portion is connected with the mounting hole by a snap connection or a thread connection.

Through adopting above-mentioned technical scheme, the fastener is comparatively stable with being connected of mounting hole, and convenient the dismantlement.

In one embodiment of the present application, the mounting hole includes a first hole and a second hole forming a stepped hole, the first hole is concavely provided on the surface of the bracket body, the second hole is communicated with the middle portion of the first hole, and the second hole has a limiting portion;

the two sides of the abutting part respectively abut against the bottom surface of the first hole and the bus bar, the clamping part is provided with a clamping hook, and the clamping hook is clamped with the limiting part.

By adopting the technical scheme, the two sides of the abutting part respectively abut against the bottom surface of the first hole and the bus bar, so that the mounting heights of the two sides of the abutting part are the same or approximately the same and are relatively balanced; and moreover, the clamping hook on the clamping part is clamped with the limiting part, so that the fastening piece is connected with the buckle of the mounting hole, the connection is stable, and the disassembly is convenient.

In one embodiment of the present application, a thickness of the holding portion is less than or equal to a depth of the first hole.

By adopting the technical scheme, the abutting part is prevented from protruding out of the first hole, and further the abutting part is prevented from occupying too much space.

In an embodiment of the present application, the limiting portion is disposed on a side of the second hole away from the first hole and is an annular end surface.

By adopting the technical scheme, the clamping hook can be abutted against the annular end face of the second hole, so that the fastener is prevented from moving upwards along the direction vertical to the surface of the bracket body, and the bus bar is prevented from moving and falling off.

In an embodiment of the present application, the retaining portion includes a plurality of elastic arms, the plurality of elastic arms are all connected to the abutting portion, and a gap is formed between adjacent elastic arms; the snap hook is arranged on at least one elastic arm.

Through adopting above-mentioned technical scheme, owing to be equipped with the clearance between the bullet arm, the card portion of holding wholly can deform, easy to assemble and dismantlement.

In one embodiment of the present application, the first hole communicates with the receiving groove in a radial direction thereof.

Through adopting above-mentioned technical scheme, need not to set up great size with the fastener, can fix in the mounting hole simultaneously and support and hold in the busbar.

In one embodiment of the present application, the bracket body is a plastic part and the fastening member is a plastic part.

Through adopting above-mentioned technical scheme, the weight of busbar support and fastener is lighter, and the cost is lower, can satisfy the light-weighted requirement of battery module.

An embodiment of a second aspect of the present invention provides a busbar assembly comprising:

a busbar support as described in any embodiment of the first aspect; and

the bus bar is arranged in the accommodating groove of the bus bar support.

The bus bar assembly comprises a bus bar support and a bus bar, the bus bar support comprises a support body and a fastening piece, the support body is provided with a containing groove and a mounting hole, and the fastening piece comprises a clamping part and a supporting part which are connected. Because the clamping part of the fastener is fixed in the mounting hole, and the abutting part of the fastener abuts against the bus bar, the bus bar can be stably fixed on the bracket body through the fastener, and the bus bar is prevented from moving and falling off.

An embodiment of the third aspect of the present invention provides a battery module, including:

a plurality of cells; and

the busbar assembly according to the second aspect is provided on a tab connection side of the plurality of battery cells.

Above-mentioned battery module includes a plurality of electric cores and busbar subassembly, because busbar support and fastener are fixed the busbar jointly, the busbar is difficult for removing, drops, and battery module's performance is better, and the reliability is high.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a perspective view of a prior art bus bar support;

FIG. 2 is a top view of a bus bar support provided by an embodiment of the present invention;

FIG. 3 is an exploded perspective view of the bus bar support shown in FIG. 2;

FIG. 4 is a perspective view of a fastener in the bus bar support shown in FIG. 3.

FIG. 5 is a cross-sectional view of the bus bar support of FIG. 2 taken along line A-A;

FIG. 6 is an enlarged partial view of portion B of the bus bar support shown in FIG. 5;

the designations in the figures mean:

1. a bus bar assembly;

100. a busbar support;

10. a stent body; 11. accommodating grooves; 12. mounting holes; 121. a first hole; 122. a second hole; 1221. a limiting part; 101. a main body portion; 102. a side wall;

20. a fastener; 21. a chucking section; 211. a hook; 212. a spring arm; 22. a holding portion; 221. a propping surface;

200. a bus bar; 210. and connecting the holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, which are examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

To illustrate the technical solution of the present invention, the following description is made with reference to the specific drawings and examples.

An embodiment of the first aspect of the present invention provides a bus bar support, which is disposed in a battery module and used for mounting a bus bar. Referring to fig. 2 and 3 together, the bus bar support 100 includes a support body 10 and a fastening member 20.

The rack body 10 is provided with an accommodating groove 11 and an installation hole 12 arranged beside the accommodating groove 11, and the accommodating groove 11 is used for accommodating the bus bar 200. As shown in fig. 3, the number of the receiving grooves 11 may be multiple, and the multiple receiving grooves 11 are arranged at intervals and may be arranged in multiple rows; the mounting hole 12 extends in the height direction of the bracket body 10, i.e., in the direction perpendicular to the bottom surface of the receiving groove 11.

Referring to fig. 2 to 4, the fastening member 20 includes a holding portion 21 and an abutting portion 22 connected to each other, the holding portion 21 is detachably mounted in the mounting hole 12, and one side of the abutting portion 22 extends to the upper side of the receiving slot 11 and abuts the bus bar 200 in the receiving slot 11.

Optionally, the holding portion 22 is circular, but is not limited thereto, and the holding portion 22 may also be bar-shaped or other shapes.

In use, the bus bar 200 is firstly installed in the accommodating groove 11, then the holding portion 21 of the fastener 20 is fixed in the installation hole 12, and the abutting portion 22 abuts the bus bar 200 in the accommodating groove 11, that is, the bus bar 200 is fixed between the abutting portion 22 of the fastener 20 and the groove bottom of the accommodating groove 11, and the abutting portion 22 can prevent the bus bar 200 from moving upwards, so that the bus bar 200 can be stably fixed on the bus bar support 100.

The bus bar support 100 comprises a support body 10 and a fastening piece 20, wherein the support body 10 is provided with the accommodating groove 11 and the mounting hole 12, the fastening piece 20 comprises a clamping part 21 and an abutting part 22 which are connected, and since the clamping part 21 of the fastening piece 20 can be fixed in the mounting hole 12, and the abutting part 22 of the fastening piece 20 can abut against the bus bar 200, the bus bar 200 can be stably fixed on the support body 10 through the fastening piece 20, the bus bar 200 is prevented from moving and falling off, and the usability of the battery module is improved.

In addition, the bus bar support 100 has a simple structure and can be a plastic-absorbing piece, so that the bus bar support 100 is light in weight and meets the requirement of light weight of the battery module; moreover, the cost of the plastic sucking piece is low; the fastener 20 is made of an insulating material, for example, the fastener 20 is made of a plastic material, so that the weight is light, the cost is low, and the forming is convenient. The bus bar support can solve the problem that a bus bar can not be fixed by the bus bar support formed by plastic suction. It is understood that the bus bar support 100 may also be an injection molded piece.

In one embodiment, the retainer 21 is a snap fit or a threaded connection with the mounting hole 12. Thus, the fastener 20 is stably connected with the mounting hole 12 and is convenient to detach.

Referring to fig. 2 to 6, in an embodiment, the mounting hole 12 includes a first hole 121 and a second hole 122 forming a stepped hole, the first hole 121 is recessed on the surface of the bracket body 10, and the second hole 122 is communicated with the middle of the first hole 121. Optionally, the second hole 122 is disposed in the middle of the first hole 121, and the diameter of the second hole 122 is smaller than that of the first hole 121. The first and

second holes

121 and 122 may be circular, square, etc., and the present application is not limited thereto.

Alternatively, the bracket body 10 may be a thin plate, as shown in fig. 3 and 5, the bracket body 10 includes a main body 101 and side walls 102 vertically connected to both sides of the main body 101, the receiving groove 11 and the mounting hole 12 are both disposed on the main body 101, and the depth of the mounting hole 12 is smaller than the height of the side walls 102. At this time, the mounting hole 12 may be a sunken hole. In other embodiments, the bracket body 10 can be a thick plate, and the mounting hole 12 can be a through hole or a blind hole opened in the bracket body 10.

The second hole 122 has a stopper 1221; two sides of the abutting portion 22 of the fastening member 20 respectively abut against the bottom surface of the first hole 121 and the bus bar 200, one side of the abutting portion 22 facing the receiving slot 11 is an abutting surface 221, and the abutting surface 221 is used for abutting against the bus bar 200. As shown in fig. 4 and 5, a hook 211 is disposed at an end of the holding portion 21 away from the abutting portion 22, and the hook 211 is clamped with the limiting portion 1221.

By adopting the above technical solution, the abutting portion 22 of the fastening member 20 is accommodated in the first hole 121, so that the fastening member 20 can be prevented from being protruded to increase the volume of the bus bar support 100; the two sides of the abutting portion 22 respectively abut against the bottom surface of the first hole 121 and the bus bar 200, so that the mounting heights of the two sides of the abutting portion 22 are the same or approximately the same, and are relatively balanced; moreover, the hook 211 on the clamping part 21 is clamped with the limiting part 1221, so that the fastening part 20 is connected with the mounting hole 12 in a buckling manner, and the connection is stable and convenient to detach.

In one embodiment, the thickness of the supporting portion 22 is less than or equal to the depth of the first hole 121. By adopting the above technical scheme, the abutting portion 22 is prevented from protruding out of the first hole 121, and further the abutting portion 22 is prevented from occupying too much space.

Optionally, the hook 211 protrudes from a side of the holding portion 21, and an inclined connecting surface is formed between the hook 211 and a surface of the holding portion 21 away from the abutting portion 22, and the holding portion 21 is substantially in an inverted triangle shape. The inclined connecting surface is provided to facilitate insertion of the catch 21 into the second hole 122.

As shown in fig. 6, in an embodiment, the limiting portion 1221 is disposed on a side of the second hole 122 away from the first hole 121 and is an annular end surface. Therefore, the hooks 211 can abut against the annular end surface of the second hole 122, so as to prevent the fastener 20 from moving upward along a direction perpendicular to the surface of the bracket body 10, and further prevent the bus bar 200 from moving and falling off. A groove is formed between the abutting portion 22 and the hook 211, and when the hook 211 abuts against the annular end surface of the second hole 122, the hole wall of the second hole 122 can be accommodated in the groove. By adopting the above technical scheme, the structure of the second hole 122 is simple, and the hook 211 can be clamped through the annular end surface of the second hole 122.

In another embodiment, the position-limiting portion 1221 may also be configured, for example, the position-limiting portion 1221 is a slot disposed in the second hole 122.

In an embodiment, the retaining portion 21 includes a plurality of elastic arms 212, each of the elastic arms 212 is connected to the abutting portion 22 and extends along the height direction of the rack body 10, and a gap is formed between adjacent elastic arms 212, and the gap also extends along the height direction of the rack body 10; at least one elastic arm 212 is provided with a hook 211. The elastic arms 212 have certain elasticity, and the number of the elastic arms 212 is, for example, two, three, four, and the like; because the clearance is arranged between the elastic arms 212, the whole clamping part 21 can deform, and the installation and the disassembly are convenient. When the fastener 20 is inserted into the mounting hole 12, the plurality of elastic arms 212 approach each other to facilitate smooth installation of the fastener 20; after the installation, the elastic arms 212 are restored to the natural state, and the hooks 211 on the elastic arms 212 are clamped with the second holes 122.

In one embodiment, the first hole 121 communicates with the receiving groove 11 in a radial direction thereof. Thus, the fastener 20 can be fixed in the mounting hole 12 and abut against the bus bar 200 without providing the fastener 20 with a large size. It can be understood that the first hole 121 and the receiving groove 11 can be disposed adjacent to each other with a certain gap.

As shown in fig. 3, each of the receiving grooves 11 is provided at both sides thereof with a mounting hole 12 and a corresponding fastening member 20, respectively, to fix opposite sides of the bus bar 200 by means of the two fastening members 20. It is understood that the mounting hole 12 at each receiving groove 11 may be one or more; in addition, the adjacent receiving grooves 11 can also share one mounting hole 12, so that the fastening member 20 can fix two adjacent busbars 200 at the same time.

In one embodiment, the bus bar support 100 includes a support body 10 and a plurality of fasteners 20, the support body 10 is provided with a plurality of receiving slots 11, and the size of the receiving slots 11 matches the size of the bus bar 200 to prevent the bus bar 200 from moving in a direction parallel to the surface of the support body 10; at least one side of the receiving groove 11 is provided with a mounting hole 12.

A plurality of fasteners 20 are detachably fitted to the mounting holes 12, respectively. Specifically, the mounting hole 12 includes a first hole 121 and a second hole 122 communicated with each other, the first hole 121 is recessed in the surface of the holder body 10, the second hole 122 extends from the middle of the first hole 121, and the second hole 122 has an annular end surface; the fastener 20 comprises a holding part 21 and an abutting part 22 which are connected, wherein the holding part 21 comprises a plurality of elastic arms 212, and each elastic arm 212 is provided with a hook 211.

When the battery module is used, the plurality of bus bars 200 are respectively arranged in the corresponding accommodating grooves 11, and then the fastening members 20 are sequentially arranged in the first holes 121 and the second holes 122 in a penetrating manner, so that the clamping parts 21 of the fastening members 20 are clamped on the annular end surfaces of the second holes 122 through the clamping hooks 211, and meanwhile, the bus bars 200 are compressed in the accommodating grooves 11 by the abutting parts 22 of the fastening members 20, so that the fastening members 20 can prevent the bus bars 200 from moving on the bracket body 10 and prevent the bus bars 200 from falling off, the structure is stable, and the performance of the battery module is favorably improved.

Referring to fig. 2 to 6, a second aspect of the present invention provides a bus bar assembly 1, including the bus bar support 100 and the bus bar 200 according to the first aspect, wherein the bus bar 200 is disposed in the receiving groove 11 of the bus bar support 100. Specifically, both sides of the bus bar 200 abut against the abutting portion 22 of the fastening member 20 and the groove bottom of the receiving groove 11, respectively, so that the bus bar 200 can be stably mounted on the bus bar support 100. The busbar 200 is provided with two connection holes 210 for connecting a positive electrode tab and a negative electrode tab of the battery cell.

The bus bar assembly 1 includes a bus bar support 100 and a bus bar 200, the bus bar support 100 includes a support body 10 and a fastening member 20, the support body 10 is provided with a receiving groove 11 and a mounting hole 12, and the fastening member 20 includes a clamping portion 21 and an abutting portion 22 connected to each other. Since the retaining portion 21 of the fastener 20 is fixed in the mounting hole 12 while the abutting portion 22 of the fastener 20 abuts against the bus bar 200, the bus bar 200 can be stably fixed on the bracket body 10 by the fastener 20, preventing the bus bar from moving and falling off. Above-mentioned busbar subassembly 1 has solved the unable fixed problem of busbar of plastic uptake fashioned busbar support.

When the material flow is transferred, the bus bar support 100 can stably fix the bus bar 200 and prevent the bus bar 200 from falling off; in addition, during material management, the bus bar support 100 and the bus bar 200 can be assembled together for delivery, and the bus bar 200 is installed on the bus bar support 100 manually without preparing materials on a production line, so that time is saved.

The third aspect of the present invention provides a battery module, which includes a plurality of battery cells and the busbar assembly 1 of the second aspect, wherein the busbar assembly 1 is disposed on a tab connection side of the plurality of battery cells.

Above-mentioned battery module includes a plurality of electric cores and busbar subassembly 1, because busbar support 100 and fastener 20 fix busbar 200 jointly, busbar 200 is difficult for removing, drops, and battery module's performance is better, and the reliability is high.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. A bus bar support, comprising:

2. The bus bar support according to claim 1, wherein the retainer is snap-fit or threaded to the mounting hole.

3. The bus bar stand according to claim 2, wherein the mounting hole includes a first hole and a second hole forming a stepped hole, the first hole being concavely provided on a surface of the stand body, the second hole being communicated with a middle portion of the first hole, and the second hole having a stopper portion;

4. The bus bar support according to claim 3, wherein a thickness of the retaining portion is less than or equal to a depth of the first hole.

5. The bus bar support according to claim 3, wherein the position-limiting portion is provided on a side of the second hole away from the first hole and has an annular end surface.

6. The bus bar stand according to claim 3, wherein the retaining portion includes a plurality of resilient arms, each of the plurality of resilient arms is connected to the abutting portion, and a gap is provided between adjacent ones of the resilient arms; the snap hook is arranged on at least one elastic arm.

7. The bus bar support according to claim 3, wherein the first hole communicates with the receiving groove in a radial direction thereof.

8. The bus bar support according to any one of claims 1 to 7, wherein the support body is a plastic-suction member and the fastening member is a plastic member.

9. A busbar assembly, comprising:

the busbar holder according to any one of claims 1 to 8; and

the bus bar is arranged in the accommodating groove of the bus bar support.

10. A battery module, comprising:

a plurality of cells; and

the buss bar assembly of claim 9, disposed on a tab connection side of a plurality of the cells.