CN209993669U

CN209993669U - Battery module

Info

Publication number: CN209993669U
Application number: CN201920950693.9U
Authority: CN
Inventors: 王震宇
Original assignee: Huizhou Yizhao Energy Technology Co Ltd
Current assignee: Huizhou Yizhao Energy Technology Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-01-24
Anticipated expiration: 2029-06-21

Abstract

The utility model discloses a battery module, which comprises a plurality of single batteries, a collecting plate and a collecting plate arranged on the collecting plate, wherein the collecting plate comprises a plurality of conductive pieces and a base plate; one end of each single battery is provided with a positive pole column and a negative pole column which penetrate through the substrate and are respectively and electrically connected with the two conductive pieces, and the plurality of conductive pieces comprise a pair of first connecting pieces and a plurality of second connecting pieces so as to connect the plurality of single batteries in series; a pair of first limiting rings for fixing the first connecting pieces and a plurality of second connecting pieces are formed on one side of the base plate, which is away from the single battery, in a protruding mode, the base plate is provided with a plurality of connecting holes for the positive poles and the negative poles to penetrate one by one and mounting grooves for accommodating the collecting plates, and a plurality of collecting wire harnesses electrically connected with the second connecting pieces are arranged on the edges of the collecting plates; compared with the prior art, the beneficial effects of the utility model reside in that, through will gather the board integration on the cylinder manifold, realize gathering the integration of being connected with the electricity, assembly process is simplified, does benefit to improvement production efficiency.

Description

Battery module

[ technical field ] A method for producing a semiconductor device

The utility model relates to a battery technology field especially relates to a battery module.

[ background of the invention ]

With the continuous consumption of non-renewable resources and the increasing prominence of environmental problems, batteries have been developed very rapidly in recent years and are widely used in the field of electric vehicles. In order to provide enough power for the electric vehicle, a plurality of batteries are connected in series and in parallel to form a battery module to be mounted on the electric vehicle for use. At present, the single battery used by the battery module is a secondary battery, a large amount of heat can be generated in the continuous charging and discharging process, and the temperature of the single battery is rapidly increased, so that the performance and the service life of the single battery are seriously reduced, and the battery module not only needs good heat dissipation performance, but also needs to be provided with a collecting plate to obtain the voltage and temperature information of the battery module. However, in the prior art, the electrical connector of the battery module is assembled separately from the collecting plate, and the assembly and disassembly are time-consuming.

Accordingly, it is desirable to provide a battery module to overcome the above-mentioned drawbacks.

[ Utility model ] content

The utility model provides a battery module aims at improving the electric connection reliability of battery module, and can realize gathering the integration assembly of being connected with the electricity, improves production efficiency.

In order to achieve the above object, the present invention provides a battery module, which includes a plurality of single batteries, a bus board and a collecting board disposed on the bus board, wherein the bus board includes a plurality of conductive pieces electrically connected to the single batteries and a substrate for mounting the conductive pieces; one end of each single battery, which is close to the substrate, is provided with a positive pole and a negative pole which penetrate through the substrate and are respectively and electrically connected with two conductive pieces, the conductive pieces comprise a pair of first connecting pieces and a plurality of second connecting pieces, one first connecting piece is electrically connected with the positive pole of one single battery, the other first connecting piece is electrically connected with the negative pole of the other single battery, and each second connecting piece is electrically connected with two adjacent single batteries so as to connect the plurality of single batteries in series; the base plate deviates from protruding a pair of first spacing ring that is used for fixed first connection piece and a plurality of fixed second connection piece that are used for that form in one side of battery cell, just a plurality of confessions have been seted up to the base plate the connecting hole that positive post and negative pole post passed one by one and be used for the holding gather the mounting groove of board, the mounting groove sets up the base plate deviates from one side of battery cell, the edge of gathering the board be equipped with a plurality of with the collection pencil that the second connection piece electricity is connected.

As an improvement of the cylindrical lithium ion battery pole piece structure of the utility model, the first connecting piece with the second connecting piece all includes two conductive parts and connects in the connecting portion between two conductive parts, a conductive part of first connecting piece is connected with the monomer battery electricity that corresponds, two conductive parts of second connecting piece are connected with two monomer battery electricity that correspond respectively.

As an improvement of the cylindrical lithium ion battery pole piece structure of the present invention, the first connecting piece is provided with two conductive parts of different shapes, and the second connecting piece is provided with two conductive parts of the same shape.

As an improvement of the cylindrical lithium ion battery pole piece structure, the conductive part is provided with a conductive hole which can be matched with the positive pole column or the negative pole column.

As an improvement of the cylindrical lithium ion battery pole piece structure of the present invention, the connecting portion is arc-shaped and has a certain elasticity.

As an improvement of the pole piece structure of the cylindrical lithium ion battery of the present invention, the substrate is a rectangular plate and includes a pair of short edges and a pair of long edges, and the single batteries are square batteries and are sequentially abutted and arranged along the direction parallel to the long edges of the substrate; the positive pole column and the negative pole column of the single battery are respectively close to one long edge of the substrate, and the two positions of the substrate close to the pair of long edges are respectively provided with the same number of connecting holes.

As an improvement of the utility model discloses cylindrical lithium ion battery pole piece structure, the base plate deviates from a pair of being used for accommodating is seted up along the long limit direction that is on a parallel with the base plate to one side of monomer battery the spacing groove of electrically conductive piece, first spacing ring reaches the second spacing ring is all certainly the protruding formation of extending in bottom of spacing groove, every connecting hole then runs through the bottom of a spacing groove.

As an improvement of the cylindrical lithium ion battery pole piece structure, the pair of first spacing rings are respectively arranged at the two ends of the pair of spacing grooves, which are back to back.

As an improvement of the cylindrical lithium ion battery pole piece structure, a plurality of through holes between a pair of spacing grooves are also formed in the substrate.

The utility model provides a battery module through will gather the board integration on the cylinder manifold, realizes gathering the integration of being connected with the electricity, and assembly process is simplified, is favorable to improving production efficiency.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of a battery module according to the present invention.

Fig. 2 is an exploded perspective view of the bus bar shown in fig. 1.

Fig. 3 is a perspective view of the substrate shown in fig. 1.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.

Referring to fig. 1 to 3, the present invention provides a battery module 100.

In the embodiment of the present invention, the battery module 100 includes a plurality of single batteries 10 and a bus board 20 electrically connected to the plurality of single batteries 10, and the bus board 20 includes a plurality of conductive members 21 and a substrate 22 for mounting the conductive members 21.

Specifically, one end of each single battery 10 close to the substrate 22 is provided with a positive post 101 and a negative post 102 which penetrate through the substrate 22 and are electrically connected with the two conductive pieces 21 respectively, the plurality of conductive pieces 21 include a pair of first connecting pieces 211 and a plurality of second connecting pieces 212, one of the first connecting pieces 211 is electrically connected with the positive post 101 of one single battery 10 to serve as a positive end of the battery module 100, the other first connecting piece 211 is electrically connected with the negative post 102 of the other single battery 10 to serve as a negative end of the battery module 100, and each second connecting piece 212 is electrically connected with two adjacent single batteries 10 to connect the plurality of single batteries 10 in series. The substrate 22 is provided with a plurality of connection holes 221 through which the positive posts 101 and the negative posts 102 pass one by one, that is, the positive posts 101 and the negative posts 102 of each battery cell 10 pass one connection hole 221 respectively and then are electrically connected with the corresponding conductive piece 21, a pair of first limiting rings 222 and a plurality of second limiting rings 223 are formed on one side of the substrate 22 away from the battery cell 10 in a protruding manner, each first limiting ring 222 surrounds and fixes one first connection piece 211, and each second limiting ring 223 surrounds and fixes one second connection piece 212.

It can be understood that the first limiting ring 222 and the second limiting ring 223 can effectively prevent the conductive members 21 from shifting due to collision or impact during the use of the battery module 100, so that the collision between two adjacent conductive members 21 and the short circuit of the battery module 100 caused by shifting can be effectively avoided, and the safety performance of the battery module 100 can be further improved.

In the present embodiment, the substrate 22 is a rectangular plate and includes a pair of short sides 201 and a pair of long sides 202, and the substrate 22 is made of insulating plastic to insulate and isolate the conductive components 21, the battery cells 10 are square batteries and are sequentially abutted and arranged along a direction parallel to the long sides 202 of the substrate 22, and the positive posts 101 and the negative posts 102 of the battery cells 10 are respectively close to one long side 202 of the substrate 22, so that two positions of the substrate 22 close to the pair of long sides 202 are respectively provided with the same number of connecting holes 221 for the corresponding positive posts 101 and the corresponding negative posts 102 to pass through, and the first limiting ring 222 and the second limiting ring 223 are also arranged at positions of the substrate 22 close to the long sides 202 for fixing the conductive components 21 electrically connected with the battery cells 10.

Further, in one embodiment, each of the first connection plate 211 and the second connection plate 212 includes two conductive portions 203 and a connection portion 204 connected between the two conductive portions 203, specifically, one conductive portion 203 of the first connection plate 211 is electrically connected to the corresponding single battery 10, the other conductive portion 203 is used for connecting other devices, and the two conductive portions 203 of the second connection plate 212 are respectively electrically connected to the corresponding two single batteries 10. In the present embodiment, in order to easily distinguish the first connection piece 211 from the second connection piece 212, the first connection piece 211 is provided with two conductive portions 203 having different shapes, and the second connection piece 212 is provided with two conductive portions 203 having the same shape.

Preferably, the conductive part 203 also plays a role of fixing the single batteries 10, for this reason, the conductive part 203 is provided with conductive holes 2031 capable of matching with the positive post 101 or the negative post 102, that is, the positive post 101 and the negative post 102 of the single battery 10 are both fixed in one conductive hole 2031 through one connection hole 221, and in this embodiment, in order to ensure the reliability of the electrical connection, the positive post 101 and the negative post 102 of each single battery 10 are both fixed in the corresponding conductive hole 2031 by laser welding.

Preferably, connecting portion 204 is the arc and has certain elasticity, make first connection piece 211 and second connection piece 212 all have certain elasticity, thus, receive the impact because of battery module 100, make between the battery cell 10 and the equipment that are connected through first connection piece 211 electricity, and when producing relative displacement between two battery cells 10 that are connected through second connection piece 212 electricity, first connection piece 211 and second connection piece 212 homoenergetic are followed and are strikeed the corresponding elastic deformation of production, thereby every conductive part 203 all can not be from the battery cell 10 or the equipment pine that correspond and take off, can the effectual reliability of guaranteeing the electricity and connecting, and then battery module 100's stability has been improved.

Further, in an embodiment, a pair of limiting grooves 224 for accommodating the conductive elements 21 is formed in one side of the substrate 22 away from the single battery 10 along a direction parallel to the long side 202 of the substrate 22, so that the first limiting ring 222 and the second limiting ring 223 are both formed by protruding and extending from the bottom of the limiting groove 224, and each connecting hole 221 penetrates through the bottom of one limiting groove 224, it can be understood that after the conductive elements 21 are accommodated in the limiting grooves 224, the conductive elements 21 are prevented from protruding out of the surface of the substrate 22, so that the bus bar 20 is more flat, which is beneficial to storing the bus bar 20 and assembling and using the bus bar 20.

Preferably, in order to facilitate the serial connection of the plurality of single batteries 10, the pair of first connection pieces 211 are electrically connected to two single batteries 10 at two ends of the battery module 100, respectively, so as to facilitate the serial connection of the plurality of single batteries 10 by the second connection piece 212, and thus the pair of first limiting rings 222 are also disposed at two ends of the base plate 22, respectively. For example, in the present embodiment, the number of the single batteries 10 is odd and is at least three, and the pair of first connection pieces 211 are respectively disposed at two sides of the battery module 100, such that the pair of first limiting rings 222 are respectively disposed at two opposite ends of the pair of limiting grooves 224. Of course, in other embodiments, the number of the single batteries 10 may be an even number and is at least two, and the pair of first connection pieces 211 are respectively disposed on the same side of the battery module 100, such that the pair of first limiting rings 222 are both disposed in one limiting groove 224 and are respectively located at two ends of the limiting groove 224.

Preferably, two limiting protrusions 2231 are formed at the inner side of each second limiting ring 223 in a protruding manner, and the two limiting protrusions 2231 are oppositely arranged and pressed on the two conductive portions 203 of the corresponding second connecting piece 212 to prevent the second connecting piece 212 from being loosened, so that the stability of the electrical connection between the second connecting piece 212 and the corresponding unit cell 10 can be improved.

Further, in an embodiment, the substrate 22 is further provided with a plurality of through holes 225 located between the pair of limiting grooves 224, so that on one hand, the weight of the substrate 22 can be reduced, thereby reducing the weight of the battery module 100, and increasing the energy density ratio of the battery module 100, and on the other hand, the heat generated by the single batteries 10 can be collected in the middle of the battery module 100, and thus the through holes 225 can also be used for dissipating heat, thereby improving the heat dissipation performance of the battery module 100.

The embodiment of the utility model provides an in, battery module 100 still includes one and gathers board 30, gathers board 30 and installs in one side that cylinder manifold 20 deviates from battery cell 10, and gathers and be equipped with a plurality of collection pencil 301 of being connected one by one with second connection piece 212 on board 30, gathers pencil 301 and is used for gathering battery cell 10's state information such as electric current, voltage, temperature. Specifically, one side of the base plate 22 facing away from the single battery 10 is provided with a mounting groove 226 located between the pair of limiting grooves 224 and used for accommodating the collecting plate 30, the mounting groove 226 and the limiting grooves 224 are arranged in parallel, and the collecting harnesses 301 are respectively arranged on two sides of the collecting plate 30 to correspond to the second connecting pieces 212 one to one. In the present embodiment, a part of the through holes 225 on the substrate 22 are disposed at the bottom of the mounting groove 226, and another part of the through holes 225 are disposed between the mounting groove 226 and the limiting groove 224.

When the battery module 100 provided by the present invention is assembled, the single batteries 10 are sequentially abutted and arranged, the substrate 22 is disposed on the single batteries 10, and the positive pole 101 and the negative pole 102 of each single battery 10 are respectively passed through a connection hole 221 on the substrate 22, the first connecting pieces 211 and the second connecting pieces 212 are placed in the first position-limiting ring 222 and the second position-limiting ring 223 in a one-to-one correspondence, such that each of the positive post 101 and the negative post 102 is mated with a respective one of the conductive vias 2031 on one of the conductive members 21, then, the collecting plate 30 is placed in the mounting groove 226 of the base plate 22, and finally, the positive pole post 101 and the negative pole post 102 of each single battery 10 are welded and fixed with the corresponding conductive piece 21 and the collecting wire bundles 301 and the second connecting pieces 212 on two sides of the collecting plate 30 are welded and fixed one by laser welding, so that the assembly of the battery module 100 is completed.

The utility model provides a battery module will gather board 30 integration on cylinder manifold 20, realizes gathering the integration of being connected with the electricity, and assembly process is simplified, is favorable to improving production efficiency.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. A battery module, its characterized in that: the collecting board comprises a plurality of single batteries, a collecting board and a base board, wherein the collecting board is arranged on the collecting board, and comprises a plurality of conductive pieces electrically connected with the single batteries and the base board is used for installing the conductive pieces; one end of each single battery, which is close to the substrate, is provided with a positive pole and a negative pole which penetrate through the substrate and are respectively and electrically connected with two conductive pieces, the conductive pieces comprise a pair of first connecting pieces and a plurality of second connecting pieces, one first connecting piece is electrically connected with the positive pole of one single battery, the other first connecting piece is electrically connected with the negative pole of the other single battery, and each second connecting piece is electrically connected with two adjacent single batteries so as to connect the plurality of single batteries in series; the base plate deviates from protruding a pair of first spacing ring that is used for fixed first connection piece and a plurality of second spacing ring that is used for fixed second connection piece that form in one side of monomer battery, just a plurality of confessions have been seted up to the base plate the connecting hole that anodal post and negative pole post passed one by one and be used for the holding gather the mounting groove of board, the mounting groove sets up the base plate deviates from one side of monomer battery, the edge of gathering the board be equipped with a plurality of with the collection pencil that the second connection piece electricity is connected.

2. The battery module according to claim 1, wherein: the first connecting sheet and the second connecting sheet respectively comprise two conductive parts and a connecting part connected between the two conductive parts, one conductive part of the first connecting sheet is electrically connected with the corresponding single battery, and the two conductive parts of the second connecting sheet are respectively electrically connected with the two corresponding single batteries.

3. The battery module according to claim 2, wherein: the first connecting sheet is provided with two conductive parts with different shapes, and the second connecting sheet is provided with two conductive parts with the same shape.

4. The battery module according to claim 3, wherein: the conductive part is provided with a conductive hole which can be matched with the positive pole column or the negative pole column.

5. The battery module according to claim 2, wherein: the connecting part is arc-shaped and has certain elasticity.

6. The battery module according to claim 1, wherein: the base plate is a rectangular plate and comprises a pair of short edges and a pair of long edges, and the single batteries are square batteries and are sequentially abutted and arranged along the direction parallel to the long edges of the base plate; the positive pole column and the negative pole column of the single battery are respectively close to one long edge of the substrate, and the two positions of the substrate close to the pair of long edges are respectively provided with the same number of connecting holes.

7. The battery module according to claim 6, wherein: one side of the substrate, which is far away from the single battery, is provided with a pair of limiting grooves which are used for containing the conductive pieces along the long edge direction parallel to the substrate, the first limiting ring and the second limiting ring are formed by protruding and extending from the bottom of the limiting grooves, and each connecting hole penetrates through the bottom of one limiting groove.

8. The battery module according to claim 7, wherein: the pair of first limiting rings are respectively arranged at two ends of the pair of limiting grooves which are opposite to each other.

9. The battery module according to claim 7, wherein: the substrate is also provided with a plurality of through holes positioned between the pair of limiting grooves.