CN206313051U - A kind of battery modules - Google Patents

Abstract

The utility model provides a battery module, which includes a plurality of battery module units, and each battery module unit includes a first receiving plate, a second receiving plate, a bus plate, a connecting piece, a first insulating plate, and a second insulating plate and a plurality of batteries; the first receiving plate is provided with a first limiting groove and is provided with a plurality of receiving grooves; the second receiving plate is provided with a second limiting groove and is provided with a plurality of receiving holes; the manifold includes a negative electrode confluence part and a positive electrode confluence A plurality of first through holes are provided in the negative confluence part, and a plurality of connection protrusions are provided in the positive confluence part; a plurality of second through holes are opened in the connecting piece, and the edge of each second through hole extends to form a plurality of claws distributed at intervals ; Negative electrode confluence part, connecting piece and first insulating plate are stored in the first limiting groove in sequence, and the claws extending from the edge of each second through hole pass through the corresponding first through hole and are stored in the receiving groove; the positive electrode The confluence part and the second insulating plate are sequentially accommodated in the second limiting groove, and each connecting protrusion is accommodated in a corresponding accommodation hole.

Description

A battery module

【Technical field】

The utility model relates to the technical field of batteries, in particular to a battery module.

【Background technique】

For pure electric vehicles, the short cruising range is an important factor restricting their promotion. The battery module is composed of hundreds of single batteries connected in series and parallel. Due to the unbalanced current and temperature during use, the cruising range of the battery will often be further reduced. When the battery capacity is lower than a certain value, according to It is stipulated that the entire battery pack needs to be replaced. In fact, it may be that only some of the battery modules have been overcharged and discharged, resulting in a "short board" in the cruising range of the entire battery pack, resulting in a decrease in the overall capacity. Therefore, if some overused parts are detected according to the battery management system and replaced in time, the service life of the entire battery module can be extended and maintenance costs can be reduced. However, at present, single cells are connected by welding screws and bolts, and the efficiency of assembly, maintenance and replacement is low.

【Content of utility model】

The purpose of the utility model is to provide a battery module that can improve assembly efficiency and maintenance efficiency.

In order to achieve the above object, the utility model provides a battery module, including a plurality of battery module units, each battery module unit includes a first receiving plate, a second receiving plate, a bus plate, a connecting piece, a first insulating plate , a second insulating plate and a plurality of batteries; the first receiving plate is provided with a first limiting groove and a plurality of receiving grooves are provided in the first limiting groove; the second receiving plate is provided with a second limiting groove and a plurality of receiving holes through the second receiving plate are provided in the second limiting groove; the manifold includes a negative electrode confluence part and a positive electrode confluence part, and the negative electrode confluence part opens a plurality of first passages holes, and the positive electrode confluence part is provided with a plurality of connecting protrusions; the connecting sheet is provided with a plurality of second through holes and includes a plurality of spaced claws extending from the edge of each second through hole; the first A plurality of third through holes are opened on an insulating plate; the negative electrode converging part, the connecting piece and the first insulating plate are sequentially accommodated in the first limiting groove, and extend from the edge of each second through hole The formed multiple claws pass through the corresponding one of the first through holes and are accommodated in the corresponding accommodation groove; the positive electrode confluence part and the second insulating plate are sequentially accommodated in the second limiting groove, and Each connection protrusion is accommodated in a corresponding receiving hole; multiple battery module units are arranged in the horizontal direction in accordance with the regular arrangement of the negative confluence part and the positive confluence part, and the plurality of battery module units are arranged vertically The upper part is arranged in parallel at intervals, and the negative electrode confluence part and the positive electrode confluence part of one battery module unit respectively correspond to the adjacent positive electrode confluence part and the negative electrode confluence part of two adjacent battery modules opposite to each other; each The battery includes a negative electrode casing and a positive electrode cap, and one end of the negative electrode casing away from the positive electrode cap passes through the corresponding third through hole, the second through hole and the first through hole and is accommodated in a corresponding one of the receiving holes. The positive electrode cap is accommodated in a corresponding receiving hole and is electrically connected with the connecting protrusion located in the receiving hole.

In a preferred embodiment, the manifold is in the shape of a "Z" and includes a connecting portion connecting the negative manifold and the positive manifold; the negative manifold is parallel to and spaced apart from the positive manifold, The connection parts are respectively perpendicular to the negative electrode confluence part and the positive electrode confluence part.

In a preferred embodiment, the second receiving plate of each battery module unit is located on one side of the first receiving plate, and the first receiving plate and the second receiving plate are arranged on the manifold Opposite surfaces; the first limiting groove and the second limiting groove are provided with gaps for the connecting part to pass through, and the connecting part is clamped between the first receiving plate and the second receiving plate Between the two containment boards.

In a preferred embodiment, the number of the receiving groove, the first through hole, the second through hole and the third through hole are the same and distributed correspondingly; the connection protrusion and the receiving hole The same number and corresponding distribution; the storage tank and the storage hole are both cylindrical and distributed in a matrix; the first through hole, the second through hole and the third through hole are in the same size circle The shape and diameter correspond to the diameter of the accommodating groove.

In a preferred embodiment, the claw piece includes a first end connected to the edge of the second through hole and a second end away from the first end; multiple claws extending from one second through hole The diameter of the circular space surrounded by the first ends of each claw piece is larger than the diameter of the circular space surrounded by the second ends.

In a preferred embodiment, a plurality of first installation holes are opened in the first limiting groove; a plurality of second installation holes are opened in the second limiting groove; a plurality of third installation holes are opened in the negative confluence part. holes; the positive confluence part has a plurality of fourth mounting holes; the connecting sheet has a plurality of fifth mounting holes; the first insulating plate has a plurality of sixth mounting holes; the second insulating plate has a plurality of The seventh installation hole; the number of the first installation hole, the third installation hole, the fifth installation hole and the sixth installation hole are the same and correspondingly distributed, and the screws pass through the sixth installation hole in sequence , the fifth installation hole, the third installation hole, and the first installation hole fixedly connect the first insulating plate, the connecting piece, and the negative electrode bus part of the bus board to the first housing plate; the number of the second installation hole, the fourth installation hole and the seventh installation hole are the same and correspondingly distributed, and the screws pass through the seventh installation hole, the fourth installation hole and the The second mounting hole fixedly connects the second insulating plate and the positive busbar of the busbar to the second receiving plate.

In a preferred embodiment, the first limiting groove is provided with a plurality of first limiting columns; the second limiting groove is provided with a plurality of second limiting columns; a plurality of second limiting holes in the positive confluence part; a plurality of third limiting holes in the connecting piece; a plurality of fourth limiting holes in the first insulating plate; The second insulating plate is provided with a plurality of fifth limiting holes; the number of the first limiting column, the first limiting hole, the third limiting hole and the fourth limiting hole are the same and correspond to distribution; the number of the second limit post, the second limit hole and the fifth limit hole are the same and correspondingly distributed; each first limit post passes through the corresponding first limit post in turn hole, the third limiting hole and the fourth limiting hole; each second limiting column passes through the corresponding second limiting hole and the fifth limiting hole in turn. Cooperate.

In a preferred embodiment, a plurality of first cooling holes penetrating through the first receiving plate are opened in the first limiting groove; The second heat dissipation hole of the plate; the negative electrode confluence part is provided with a plurality of third heat dissipation holes, and the positive electrode confluence part is provided with a plurality of fourth heat dissipation holes; the connecting piece is provided with a plurality of fifth heat dissipation holes; the first insulation The board is provided with a plurality of sixth cooling holes; the second insulating board is provided with a plurality of seventh cooling holes.

In a preferred embodiment, both the first receiving plate and the second receiving plate are in the shape of a cuboid; the first limiting groove is rectangular, and the connecting piece and the first insulating plate The shape of the first limiting groove is a rectangle corresponding to the shape of the second limiting groove; the shape of the second insulating plate is a rectangle corresponding to the shape of the second limiting groove.

The battery module provided by the utility model is assembled from a plurality of battery module units, adopts a plug-in battery connection scheme, the assembly method is simple, and can be adapted to mass production. When the battery fails, it can be monitored according to the battery management system The data locates the problem module, and the problem module can be quickly found and disassembled for maintenance, which greatly reduces maintenance costs and improves maintenance efficiency.

【Description of drawings】

Fig. 1 is a three-dimensional structural view of the battery module of the present invention when it is partially assembled.

FIG. 2 is a three-dimensional structure diagram of a battery module unit of the battery module shown in FIG. 1 .

FIG. 3 is an exploded view of a part of the structure of the battery module shown in FIG. 1 .

FIG. 4 is a three-dimensional structure diagram of a bus plate of the battery module shown in FIG. 1 .

FIG. 5 is a three-dimensional structural view of the connecting piece of the battery module shown in FIG. 1 .

FIG. 6 is a schematic diagram of connection among a plurality of battery module units of the battery module shown in FIG. 1 .

【detailed description】

In order to make the purpose, technical solution and beneficial technical effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementations described in this specification are only for explaining the utility model, not for limiting the utility model.

Please refer to FIG. 1, FIG. 2 and FIG. 3, the utility model provides a battery module 200, including a plurality of battery module units 100, each battery module unit 100 includes a first receiving plate 10, a second receiving plate 20 , a bus plate 30 , a connecting piece 40 , a first insulating plate 50 , a second insulating plate 60 and a plurality of batteries 70 .

Specifically, the first receiving plate 10 is provided with a first limiting groove 11 and a plurality of receiving grooves 12, a plurality of first limiting columns 13, a plurality of first installation The hole 14 and the plurality of first heat dissipation holes 15, wherein the receiving groove 12 is a blind hole, and the first installation hole 14 and the first heat dissipation hole 15 are through holes. The second receiving plate 20 is provided with a second limiting groove 21, and a plurality of receiving holes 22 passing through the second receiving plate 20 and a plurality of second limiting columns ( Not shown in the figure), a plurality of second installation holes 24 and a plurality of second heat dissipation holes 25, the second installation holes 24 and the second heat dissipation holes 25 are through holes. In this embodiment, both the first receiving plate 10 and the second receiving plate 20 are made of insulating materials.

Please refer to FIG. 4 , the manifold 30 includes a negative manifold 31 , a positive manifold 32 , and a connecting portion 33 connecting the negative manifold 31 and the positive manifold 32 . Specifically, the manifold 30 is in a “Z” shape, the negative manifold 31 and the positive manifold 32 are arranged in parallel and at intervals, and the connection between the negative manifold 31 and the positive manifold 32 is The portion 33 is perpendicular to the negative electrode confluence portion 31 and the positive electrode confluence portion 32 . The negative electrode confluence portion 31 defines a plurality of first through holes 311 , a plurality of first limiting holes 312 , a plurality of third installation holes 313 and a plurality of third cooling holes 314 penetrating through the negative electrode confluence portion 31 . The positive electrode confluence part 32 includes a plurality of connection protrusions 321 and defines a plurality of second limiting holes 322 , a plurality of fourth installation holes 323 and a plurality of fourth cooling holes 324 passing through the positive electrode confluence part 32 . The bus plate 30 is made of metal material such as copper or nickel by stamping process.

Please refer to FIG. 5 together. The connecting piece 40 is provided with a plurality of second through holes 41 passing through the connecting piece 40, a plurality of third limiting holes 42, a plurality of fifth mounting holes 43 and a plurality of fifth mounting holes. Heat dissipation holes 44 . Further, the connecting piece 40 further includes a plurality of claw pieces 411 extending from the edge of the second through hole 41 and evenly distributed at intervals. The claw piece 411 includes an arc-shaped first end 4111 connected to the edge of the second through hole 41 and a second end 4112 away from the first end 4111 . The diameter of the circular space surrounded by the first ends 4111 of the plurality of claw pieces 411 extending from one of the second through holes 41 is larger than the diameter of the circular space surrounded by the second ends 4112 . In this embodiment, the connecting piece 40 is made of copper sheet through stamping process.

Further, the first insulating plate 50 is provided with a plurality of third through holes 51 penetrating through the first insulating plate 50, a plurality of fourth limiting holes 52, a plurality of sixth mounting holes 53 and a plurality of sixth Heat dissipation holes 54 . The second insulating board 60 defines a plurality of fifth limiting holes 61 passing through the second insulating board 60 , a plurality of seventh mounting holes 62 and a plurality of seventh cooling holes 63 .

The number of the receiving groove 12 , the first through hole 311 , the second through hole 41 and the third through hole 51 are the same and distributed correspondingly. The numbers of the first limiting posts 13 , the first limiting holes 312 , the third limiting holes 42 and the fourth limiting holes 52 are the same and correspondingly distributed. The numbers of the first installation hole 14 , the third installation hole 313 , the fifth installation hole 43 and the sixth installation hole 53 are the same and distributed correspondingly. The negative electrode bus part 31 , the connecting piece 40 and the first insulating plate 50 are sequentially accommodated in the first limiting groove 11 , that is, the negative electrode bus part 31 abuts against the first receiving plate 10 , The connecting piece 40 abuts against the side of the negative electrode bus 31 away from the first receiving plate 10 and is electrically connected, and the first insulating plate 50 abuts against the connecting piece 40 and is away from the negative electrode bus. side of part 31. Further, a plurality of claws 411 formed by extending from each second through hole 41 pass through the corresponding first through hole 311 and are received in a corresponding receiving groove 12 . The first limiting post 11 passes through the first limiting hole 312 , the third limiting hole 42 and the fourth limiting hole 52 sequentially and is limitedly fitted. The first insulating plate 50 and the connecting piece 40 are screwed through the sixth mounting hole 53 , the fifth mounting hole 43 , the third mounting hole 313 and the first mounting hole 14 in sequence. , The negative electrode collector portion 31 of the collector plate 30 is fixedly connected to the first receiving plate 10 . In this embodiment, the storage tanks 12 are cylindrical and distributed in a matrix, and the first through holes 41, the second through holes 41, and the third through holes 51 are circular with the same size and have corresponding diameters. on the diameter of the receiving groove 12 .

The connecting protrusions 321 have the same number as the receiving holes 22 and are distributed correspondingly. The numbers of the second limiting posts, the second limiting holes 322 and the fifth limiting holes 61 are the same and correspondingly distributed. The numbers of the second mounting holes 24 , the fourth mounting holes 323 and the seventh mounting holes 62 are the same and distributed correspondingly. The positive electrode bus part 32 and the second insulating plate 60 are sequentially accommodated in the second limiting groove 21 , that is, the positive electrode bus part 32 is located between the second receiving plate 20 and the second insulating plate 60 between. Further, each connecting protrusion 321 is received in a corresponding receiving hole 22 . The second limiting post passes through the second limiting hole 322 and the fifth limiting hole 61 sequentially and is limitedly fitted. The second insulating plate 60 and the positive electrode bus part 32 of the bus board 30 are fixedly connected to The second receiving plate 20 .

Please refer to FIG. 6 together, a plurality of battery module units 100 are arranged in the horizontal direction according to the rule that the negative electrode converging portion 31 and the positive electrode converging portion 32 are intersected, and the plurality of battery module units 100 are arranged in the vertical direction. The negative electrode confluence portion 31 and the positive electrode confluence portion 32 of one of the battery module units 100 are arranged in parallel and at intervals respectively corresponding to the adjacent positive electrode confluence portions of two adjacent battery module units 100 opposite to the interval. 32 and the negative electrode bus 31. Each battery 70 includes a negative electrode casing 71 and a positive electrode cap 72, and the end of the negative electrode casing 71 away from the positive electrode cap 72 passes through the corresponding third through hole 51, the second through hole 41 and the corresponding one in turn. The first through hole 311 is accommodated in a corresponding receiving groove 12 and is electrically connected with a plurality of claw pieces 411 located in the receiving groove 12; the positive electrode cap 72 is accommodated in a corresponding receiving hole 22 and is located in The connection protrusion 321 in the receiving hole 22 is electrically connected.

In this embodiment, both the first receiving plate 10 and the second receiving plate 20 are in the shape of a cuboid, the first limiting groove 11 and the second limiting groove 21 are both rectangular, and the connecting piece 40 and the first insulating plate 50 are rectangles corresponding to the shape of the first limiting slot 11 , and the second insulating plate 60 is rectangular corresponding to the shape of the second limiting slot 21 . The first receiving plate 10 and the second receiving plate 20 are also provided with a gap for the connecting portion 33 to pass through, and the connecting portion 33 of each battery module unit 100 is clamped in the first receiving plate. between the board 10 and the second receiving board 20 .

The battery module provided by the utility model is assembled from a plurality of battery module units, adopts a plug-in battery connection scheme, the assembly method is simple, and can be adapted to mass production. When the battery fails, it can be monitored according to the battery management system The data locates the problem module, and the problem module can be quickly found and disassembled for maintenance, which greatly reduces maintenance costs and improves maintenance efficiency.

The utility model is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (9)

1. A battery module, characterized in that: it includes a plurality of battery module units, and each battery module unit includes a first receiving plate, a second receiving plate, a bus plate, a connecting piece, a first insulating plate, a second An insulating plate and a plurality of batteries; the first receiving plate is provided with a first limiting groove and a plurality of receiving grooves are provided in the first limiting groove; the second receiving plate is provided with a second limiting groove and The second limiting groove is provided with a plurality of receiving holes passing through the second receiving plate; the manifold includes a negative electrode confluence part and a positive electrode confluence part, and the negative electrode confluence part is provided with a plurality of first through holes, so The positive electrode converging part is provided with a plurality of connecting protrusions; the connecting sheet is provided with a plurality of second through holes and includes a plurality of spaced claws extending from the edge of each second through hole; the first insulating plate A plurality of third through holes are opened; the negative electrode converging part, the connecting piece and the first insulating plate are successively accommodated in the first limiting groove, and are formed by extending from the edge of each second through hole A plurality of claw pieces pass through a corresponding one of the first through holes and are accommodated in the corresponding receiving groove; the positive electrode converging part and the second insulating plate are sequentially accommodated in the second limiting groove, and each connected The protrusion is accommodated in a corresponding receiving hole; a plurality of the battery module units are arranged in the horizontal direction according to the rule that the negative electrode confluence part and the positive electrode confluence part are intersected, and the plurality of battery module units are spaced in parallel in the vertical direction The negative electrode confluence part and the positive electrode confluence part of one of the battery module units are set and respectively correspond to the adjacent positive electrode confluence part and the negative electrode confluence part of two adjacent battery modules opposite to each other; each battery includes a negative electrode The casing and the positive electrode cap, the end of the negative electrode casing away from the positive electrode cap passes through the corresponding third through hole, the second through hole and the first through hole to be accommodated in a corresponding receiving groove and It is electrically connected with a plurality of claws located in the receiving groove, and the positive electrode cap is received in a corresponding receiving hole and is electrically connected with the connection protrusion located in the receiving hole. 2. The battery module according to claim 1, wherein the manifold is in a "Z" shape and includes a connecting portion connecting the negative manifold and the positive manifold; The positive electrode confluence parts are arranged in parallel and at intervals, and the connection parts are respectively perpendicular to the negative electrode confluence part and the positive electrode confluence part. 3. The battery module according to claim 2, characterized in that: the second receiving plate of each battery module unit is located on one side of the first receiving plate and the first receiving plate and the The second receiving plate is arranged on the opposite surface of the manifold; the first limiting groove and the second limiting groove are both provided with gaps for the connecting part to pass through, and the connecting part is clamped on Between the first receiving board and the second receiving board. 4. The battery module according to claim 1, characterized in that: the number of the receiving groove, the first through hole, the second through hole and the third through hole are the same and distributed accordingly; The number of the connecting protrusions is the same as that of the receiving holes and they are distributed correspondingly; the receiving grooves and the receiving holes are both cylindrical and distributed in a matrix; the first through hole, the second through hole and the The third through holes are circular with the same size and the diameter corresponds to the diameter of the receiving groove. 5. The battery module according to claim 1, wherein the claw piece comprises a first end connected to the edge of the second through hole and a second end far away from the first end; The diameter of the circular space surrounded by the first ends of the plurality of claws extending from the second through holes is larger than the diameter of the circular space surrounded by the second ends. 6. The battery module according to claim 1, wherein a plurality of first installation holes are opened in the first limiting groove; a plurality of second installation holes are opened in the second limiting groove; A plurality of third installation holes are provided in the negative confluence part; a plurality of fourth installation holes are provided in the positive confluence part; a plurality of fifth installation holes are provided in the connecting piece; a plurality of sixth installation holes are provided in the first insulating plate ; The second insulating plate is provided with a plurality of seventh installation holes; the number of the first installation hole, the third installation hole, the fifth installation hole and the sixth installation hole are the same and correspondingly distributed, through Screws pass through the sixth installation hole, the fifth installation hole, the third installation hole and the first installation hole in turn to connect the first insulating plate, the connecting piece, and the negative pole of the bus plate The confluence part is fixedly connected to the first receiving plate; the number of the second installation hole, the fourth installation hole and the seventh installation hole are the same and correspondingly distributed, and the screws pass through the seventh installation hole in sequence , the fourth installation hole and the second installation hole fixedly connect the second insulating plate and the positive busbar of the busbar to the second receiving plate. 7. The battery module according to claim 1, wherein a plurality of first limiting posts are arranged in the first limiting groove; a plurality of second limiting columns are arranged in the second limiting groove. position column; the negative confluence part is provided with a plurality of first limit holes; the positive confluence part is provided with a plurality of second limit holes; the connecting piece is provided with a plurality of third limit holes; the first insulating plate A plurality of fourth limit holes are provided; the second insulating plate is provided with a plurality of fifth limit holes; the first limit post, the first limit hole, the third limit hole and the The number of the fourth limiting holes is the same and correspondingly distributed; the number of the second limiting posts, the second limiting holes and the fifth limiting holes are the same and correspondingly distributed; each first limiting post is sequentially Pass through the corresponding first limit hole, the third limit hole and the fourth limit hole for limit fit; each second limit post passes through the corresponding second limit hole in turn and the fifth limit hole limit fit. 8. The battery module according to claim 1, wherein a plurality of first cooling holes penetrating through the first receiving plate are opened in the first limiting groove; A plurality of second heat dissipation holes are also provided through the second receiving plate; a plurality of third heat dissipation holes are provided in the negative electrode confluence part, and a plurality of fourth heat dissipation holes are provided in the positive electrode confluence part; a plurality of fourth heat dissipation holes are provided in the connecting piece. The fifth heat dissipation hole; the first insulating plate is provided with a plurality of sixth heat dissipation holes; the second insulating plate is provided with a plurality of seventh heat dissipation holes. 9. The battery module according to claim 1, characterized in that: the first receiving plate and the second receiving plate are both in the shape of a cuboid; the first limiting groove is rectangular, and the connecting piece and the The first insulating plate is rectangular corresponding to the shape of the first limiting groove; the second limiting groove is rectangular, and the second insulating plate is rectangular corresponding to the shape of the second limiting groove.