CN213782206U

CN213782206U - Power battery and electric automobile

Info

Publication number: CN213782206U
Application number: CN202022318254.1U
Authority: CN
Inventors: 陈鸿铭
Original assignee: Shanghai Cenat New Energy Co Ltd
Current assignee: Shanghai Cenat New Energy Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-07-23
Anticipated expiration: 2030-10-16

Abstract

The utility model relates to the technical field of batteries, the utility model provides a power battery and electric automobile, above-mentioned power battery includes a plurality of battery modules and an at least bridging piece, each battery module all is equipped with the electrode and draws out the piece, each bridging piece is electric connection respectively and draws out the piece in the electrode of two adjacent battery modules, each electrode draws out the piece and all has the location space, each bridging piece's relative both ends all are equipped with location portion, each location portion pegs graft in the location space of the piece is drawn out to the electrode that corresponds, effectively realize the pre-fixing operation to the bridging piece, the power battery that adopts above-mentioned pre-fixing structure can effectively realize automatic assembly operation, effectively improve above-mentioned power battery's assembly efficiency.

Description

Power battery and electric automobile

Technical Field

The utility model relates to a battery technology field especially provides a power battery and electric automobile.

Background

The conventional power battery generally includes a plurality of battery modules, and two adjacent battery modules are connected by using a crossover so as to connect the two adjacent battery modules in series or in parallel.

At present, the connection operation of the battery module and the bridging piece is generally carried out in a manual mode, a worker needs to hold the bridging piece with one hand to fix the bridging piece, and operates a connecting tool with the other hand to connect the bridging piece to the battery module.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power battery and electric automobile aims at solving the technical problem that the assembly efficiency of battery module and cross-over piece is low among the prior art.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions: the utility model provides a power battery, includes a plurality of battery module and at least one bridging piece, and each battery module all is equipped with the electrode and draws forth the piece, and each bridging piece electric connection respectively has the location space in the electrode of two adjacent battery modules, and each electrode draws forth the piece, and each bridging piece's relative both ends all are equipped with location portion, and each location portion pegs graft in the location space of the electrode that corresponds draws forth the piece.

The utility model provides a power battery has following beneficial effect at least: when the assembling process is carried out, the positioning part at one end of the bridging piece is inserted into the positioning space of the electrode leading-out piece of one battery module, the positioning part at the other end of the bridging piece is inserted into the positioning space of the electrode leading-out piece of the other battery module, at the moment, the bridging piece is pre-fixed between the two adjacent battery modules, then the pre-fixing operation is carried out on other battery modules and other bridging pieces in the power battery respectively, and then each bridging piece in the power battery is fixedly connected between the two adjacent battery modules respectively through automatic connecting equipment.

In one embodiment, each electrode lead-out member is provided with a first clamping arm and a second clamping arm which are arranged oppositely, and a positioning space is formed between each first clamping arm and the corresponding second clamping arm in a separating mode.

By adopting the technical scheme, the pre-fixing operation of the bridging piece is effectively realized.

In one embodiment, the two opposite sides of each positioning portion are respectively provided with a first limiting groove and a second limiting groove, one side of each first clamping arm relative to the corresponding second clamping arm is provided with a first protruding rib, one side of each second clamping arm relative to the corresponding first clamping arm is provided with a second protruding rib, each first protruding rib is respectively inserted into the first limiting groove of the corresponding positioning portion, and each second protruding rib is respectively inserted into the second limiting groove of the corresponding positioning portion.

By adopting the technical scheme, the limiting effect on the bridging piece is effectively achieved, the situation that the bridging piece is displaced in the automatic assembly process can be avoided, and the stability of the automatic assembly operation of the power battery is effectively ensured.

In one embodiment, the two positioning portions of each bridging piece are respectively in interference fit between the corresponding first clamping arm and the corresponding second clamping arm.

By adopting the technical scheme, the first clamping arm and the second clamping arm clamp the positioning part of the bridging piece together, so that the pre-fixing operation of the bridging piece is more effectively realized, the shifting condition of the bridging piece in the automatic assembly process can be avoided, and the stability of the automatic assembly operation of the power battery is effectively ensured.

In one embodiment, each battery module is provided with a support seat positioned below the corresponding electrode leading-out piece, and each positioning part is inserted into the positioning space of the corresponding electrode leading-out piece and then abuts against the corresponding support seat.

Through adopting above-mentioned technical scheme, the support can effectively play the supporting effect to the location portion of cross-over piece, makes the cross-over piece can fix in advance between two adjacent battery module more steadily, effectively avoids the condition that the cross-over piece appears shifting at automatic assembly in-process to effectively guarantee the stability of above-mentioned power battery's automatic assembly operation.

In one embodiment, each battery module includes a fastening member, each positioning portion has a first connection hole, each support has a second connection hole, and each fastening member passes through the first connection hole of the corresponding positioning portion and then is connected to the second connection hole of the corresponding support.

Through adopting above-mentioned technical scheme, effectively realize connecting the crossover member between two adjacent battery module.

In one embodiment, each positioning part is welded with each electrode lead-out piece correspondingly.

In one embodiment, each bridging piece is in a U-shaped structure, and two opposite ends of each bridging piece are bent towards the corresponding battery module to form positioning parts.

Through adopting above-mentioned technical scheme, the crossover piece after accomplishing the assembly operation can press close to with the battery module to the at utmost, effectively improves above-mentioned power battery's inner structure's compactness, effectively reduces above-mentioned power battery's volume to promote above-mentioned power battery's energy density.

In one embodiment, the insertion end of each positioning portion is provided with a plurality of corners, and each corner is in a chamfer structure.

Through adopting above-mentioned technical scheme, be more convenient for insert each location portion in the location space that corresponds, effectively improve above-mentioned power battery's the convenient degree of assembly.

In order to achieve the above object, the utility model also provides an electric automobile, including above-mentioned power battery.

Since the electric vehicle adopts all the embodiments of the power battery, at least all the advantages of the embodiments are achieved, and detailed description is omitted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced 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 without inventive labor.

Fig. 1 is a schematic structural diagram of a power battery according to an embodiment of the present invention;

FIG. 2 is an exploded view of the power cell of FIG. 1;

FIG. 3 is an enlarged schematic view of the power battery shown in FIG. 2 at A;

FIG. 4 is a schematic diagram of a crossover in the power cell of FIG. 1;

fig. 5 is a schematic structural diagram of a power battery according to another embodiment of the present invention;

FIG. 6 is an exploded view of the power cell of FIG. 5;

FIG. 7 is an enlarged schematic view of the power battery shown in FIG. 6 at B;

fig. 8 is a schematic diagram illustrating the construction of the crossover in the power cell of fig. 5.

Wherein, in the figures, the respective reference numerals:

10. the battery module comprises a battery module 11, an electrode leading-out piece 111, a positioning space 112, a first clamping arm 1121, a first convex rib 113, a second clamping arm 1131, a second convex rib 12, a support 121, a second connecting hole 20, a bridging piece 21, a positioning part 211, a first connecting hole 212, a first limiting groove 213, a second limiting groove 214, a plug-in end 2141 and a corner part.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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 invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example one

Referring to fig. 1 to 4, a power battery includes a plurality of battery modules 10 and at least one crossover member 20, each battery module 10 is provided with an electrode leading-out member 11, each crossover member 20 is electrically connected to the electrode leading-out members 11 of two adjacent battery modules 10, each electrode leading-out member 11 is provided with a positioning space 111, two opposite ends of each crossover member 20 are provided with positioning portions 21, and each positioning portion 21 is inserted into the positioning space 111 of the corresponding electrode leading-out member 11.

In the assembling process, the positioning part 21 at one end of the bridging piece 20 is inserted into the positioning space 111 of the electrode leading-out piece 11 of one battery module 10, and the positioning part 21 at the other end of the bridging piece 20 is inserted into the positioning space 111 of the electrode leading-out piece 11 of another battery module 10, at this time, the bridging piece 20 is pre-fixed between two adjacent battery modules 10, then the pre-fixing operation is respectively performed on other battery modules 10 and other bridging pieces 20 in the power battery, and then each bridging piece 20 in the power battery is respectively fixedly connected between two adjacent battery modules 10 through automatic connection equipment.

In the present embodiment, please refer to fig. 3, each electrode lead-out member 11 has a first clamping arm 112 and a second clamping arm 113 that are disposed in a spaced manner, and the positioning space 111 is formed between each first clamping arm 112 and the corresponding second clamping arm 113. By adopting the technical scheme, the pre-fixing operation of the bridging piece 20 is effectively realized.

Specifically, as shown in fig. 1 to fig. 3, the two positioning portions 21 of each bridge piece 20 are respectively in interference fit between the corresponding first clamping arm 112 and the corresponding second clamping arm 113. By adopting the above technical scheme, the first clamping arm 112 and the second clamping arm 113 clamp the positioning part 21 of the crossover 20 together, so that the pre-fixing operation of the crossover 20 is more effectively realized, the situation that the crossover 20 is displaced in the automatic assembly process can be avoided, and the stability of the automatic assembly operation of the power battery is effectively ensured.

Specifically, the width of the positioning portion 21 of each bridge 20 is slightly larger than the distance between the corresponding first clamping arm 112 and the corresponding second clamping arm 113 (i.e., the width of the positioning space 111), so that the two positioning portions 21 of each bridge 20 are respectively in interference fit between the corresponding first clamping arm 112 and the corresponding second clamping arm 113.

In the present embodiment, please refer to fig. 1 to 3, each battery module 10 is provided with a support 12 located below the corresponding electrode lead-out member 11, and each positioning portion 21 is inserted into the positioning space 111 of the corresponding electrode lead-out member 11 and then abuts against the corresponding support 12. Through adopting above-mentioned technical scheme, support 12 can effectively play the supporting effect to the location portion 21 of crossover piece 20, makes crossover piece 20 can fix in advance between two adjacent battery module 10 more steadily, effectively avoids the condition that the aversion appears in automatic assembly process in crossover piece 20 to effectively guarantee the stability of above-mentioned power battery's automatic assembly operation.

Specifically, as shown in fig. 2 to 4, each battery module 10 includes a fastening member (not shown), such as a bolt, a screw, etc., each positioning portion 21 has a first connecting hole 211, each support 12 has a second connecting hole 121, and each fastening member passes through the first connecting hole 211 of the corresponding positioning portion 21 and then is connected to the second connecting hole 121 of the corresponding support 12. By adopting the above technical scheme, the connection of the crossover 20 between the adjacent two battery modules 10 is effectively achieved.

In this embodiment, the automatic connecting device is an automatic welding device.

In the present embodiment, please refer to fig. 3, each bridging member 20 is a "U" shaped structure, and two opposite ends of each bridging member 20 are bent toward the corresponding battery module 10 to form the positioning portion 21. By adopting the technical scheme, the cross connecting piece 20 after the assembly operation can be attached to the battery module 10 to the greatest extent, the compactness of the internal structure of the power battery is effectively improved, the size of the power battery is effectively reduced, and the energy density of the power battery is improved.

As shown in fig. 4, the inserting end 214 of each positioning portion 21 has a plurality of corners 2141, and each corner 2141 has a chamfered structure. Through adopting above-mentioned technical scheme, be more convenient for insert each location portion 21 in the corresponding location space 111, effectively improve above-mentioned power battery's the convenient degree of assembly.

Example two

The present embodiment is different from the first embodiment in the pre-fixing structure of the crossover 20.

In this embodiment, please refer to fig. 5 to 8, two opposite sides of each positioning portion 21 are respectively provided with a first limiting groove 212 and a second limiting groove 213, one side of each first clamping arm 112 corresponding to the second clamping arm 113 is provided with a first protruding rib 1121, one side of each second clamping arm 113 corresponding to the first clamping arm 112 is provided with a second protruding rib 1131, each first protruding rib 1121 is respectively inserted into the first limiting groove 212 of the corresponding positioning portion 21, and each second protruding rib 1131 is respectively inserted into the second limiting groove 213 of the corresponding positioning portion 21, so as to effectively limit the bridging member 20, prevent the bridging member 20 from shifting during the automatic assembly process, and thereby effectively ensure the stability of the automatic assembly operation of the power battery.

EXAMPLE III

The present embodiment is different from the first embodiment in the manner of connecting the crossover 20 with the battery module 10.

In the present embodiment, the positioning parts 21 are welded to the electrode lead-outs 11, respectively, so that the connection of the crossover 20 between the adjacent two battery modules 10 is effectively accomplished.

An electric automobile comprises the power battery.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a power battery, includes a plurality of battery module and an at least bridging piece, each battery module all is equipped with electrode extraction piece, each bridging piece respectively electric connection in adjacent two battery module the electrode extraction piece, its characterized in that: each electrode leading-out piece is provided with a positioning space, two opposite ends of each bridging piece are provided with positioning parts, and each positioning part is inserted into the corresponding positioning space of the electrode leading-out piece.

2. The power cell of claim 1, wherein: each electrode leading-out piece is provided with a first clamping arm and a second clamping arm which are oppositely arranged in a separated mode, and a positioning space is formed between each first clamping arm and the corresponding second clamping arm.

3. The power cell of claim 2, wherein: the positioning part is provided with a first limiting groove and a second limiting groove on two opposite sides, a first convex rib is arranged on one side of each first clamping arm relative to the corresponding second clamping arm, a second convex rib is arranged on one side of each second clamping arm relative to the corresponding first clamping arm, each first convex rib is respectively inserted into the corresponding first limiting groove of the positioning part, and each second convex rib is respectively inserted into the corresponding second limiting groove of the positioning part.

4. The power cell of claim 2, wherein: the two positioning parts of each bridging piece are respectively in interference fit between the corresponding first clamping arm and the corresponding second clamping arm.

5. The power cell of any of claims 1-4, wherein: each battery module is provided with a support which is positioned below the corresponding electrode leading-out piece, and each positioning part is inserted into the positioning space of the corresponding electrode leading-out piece and then is abutted against the corresponding support.

6. The power cell of claim 5, wherein: each battery module all includes the fastener, and each location portion has all seted up first connecting hole, and each support has all seted up the second connecting hole, and each fastener passes behind the first connecting hole of corresponding location portion connect in the second connecting hole of corresponding support.

7. The power cell of any of claims 1-4, wherein: and each positioning part is welded with each electrode leading-out piece correspondingly.

8. The power cell of any of claims 1-4, wherein: each bridging piece is of a U-shaped structure, and the two opposite ends of each bridging piece are bent towards the corresponding battery module to form the positioning parts.

9. The power cell of any of claims 1-4, wherein: each the grafting end of location portion all has a plurality of bights, each bight all is the chamfer structure.

10. An electric vehicle, characterized in that: comprising a power cell according to any of claims 1-9.