CN214411443U

CN214411443U - Cover plate structure for connecting pole core

Info

Publication number: CN214411443U
Application number: CN202120686390.8U
Authority: CN
Inventors: 刘中奎; 陈萌; 曹利娜; 丁怀东; 张宝
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-10-15
Anticipated expiration: 2031-04-02

Abstract

The utility model discloses a cover plate structure for connecting pole cores, which comprises a cover plate, a positive pole connecting piece group and a negative pole connecting piece group, wherein the positive pole connecting piece group and the negative pole connecting piece group are respectively fixed at two ends of the bottom of the cover plate; the positive connecting piece group comprises a positive connecting rod and a positive connecting piece, and the negative connecting piece group comprises a negative connecting rod and a negative connecting piece. The utility model has the advantages of, this apron structure not only can shorten the height of the anodal ear and the negative pole ear of utmost point core, has improved the inside space utilization of battery to the height of anodal ear and negative pole ear shortens, is difficult for appearing the phenomenon of buckling, thereby has guaranteed that contact such as pole piece, apron and the battery case in anodal ear and negative pole ear and the utmost point core takes place the risk of short circuit.

Description

Cover plate structure for connecting pole core

Technical Field

The utility model relates to a lithium cell technical field specifically is a connect apron structure of utmost point core.

Background

At present, the traditional petroleum energy is being largely consumed, China surpasses the United states and becomes the largest world of petroleum import, the use of petroleum energy also brings the problem of environmental pollution, especially carbon emission, wherein the 'contribution' of the tail gas emission of the traditional fuel oil automobile is larger, the automobile keeping amount of China surpasses the first place of the United states in the world, and the pressure of energy conservation and environmental protection is higher and higher. And from the perspective of energy conservation and emission reduction, the development of new energy electric automobiles is profound. With the improvement of living standard, the travel demand of people is gradually improved at present, and an electric vehicle with higher endurance mileage is also needed. In order to increase the range, the energy density needs to be increased in the battery. The energy density of the battery is improved, the positive and negative electrode materials with higher gram capacity can be used in the aspect of a material system, the light-weight structural member material is used, the thick electrode technology can be used in the aspect of the process to improve the compaction density and the like, the electrical core size in the aspect of the size structure is more and more advantageous, the height or the thickness is increased generally, the larger the size is, the occupied proportion of auxiliary parts such as a shell and a cover plate is lower, the utilization rate of the internal space is higher, and the improvement of the grouping efficiency of the energy density of the single electrical core and the PACK is advantageous.

Along with the larger thickness of the battery, the number of pole cores in the battery is correspondingly increased, so that the number of pole lugs is increased, and the welding difficulty of the pole lugs is increased; at present, in order to facilitate welding and assembling, most of the tabs are heightened, but the heightened tabs can cause waste of the internal space of the battery, reduce the space utilization rate of the internal space of the battery, and easily cause bending phenomena when the heights of the tabs are too high, and the bent tabs are in contact with pole pieces, cover plates, battery shells and the like in pole cores to cause short circuit risks.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve lies in how to improve battery inner space utilization and prevent that short circuit phenomenon from taking place.

In order to solve the technical problem, the utility model provides a following technical scheme:

the cover plate structure comprises a cover plate, a positive connecting plate group and a negative connecting plate group, wherein the positive connecting plate group and the negative connecting plate group are fixed at two ends of the bottom of the cover plate respectively.

The positive connecting piece group comprises positive connecting rods and positive connecting pieces, the positive connecting rods are fixed at one end of the bottom of the cover plate in parallel, a plurality of positive connecting pieces are fixed between the two positive connecting rods side by side, and each positive connecting piece is correspondingly connected with a positive lug of each pole core.

The negative pole connecting piece group comprises negative pole connecting rods and negative pole connecting pieces, the negative pole connecting rods are fixed at one end of the bottom of the cover plate far away from the positive pole connecting piece group in parallel, a plurality of negative pole connecting pieces are fixed between the two negative pole connecting rods side by side, and each negative pole connecting piece is correspondingly connected with the negative pole lug of each pole core.

Connect together through the anodal ear of single anodal connection piece and single utmost point core, single negative pole connection piece links together with the negative pole ear of single utmost point core, finally realize being connected of utmost point core and apron, this connected mode not only can shorten the anodal ear of utmost point core and the height of negative pole ear, the inside space utilization of battery has been improved, and the highly shortening of anodal ear and negative pole ear, the difficult phenomenon of buckling that appears, thereby pole piece in anodal ear and negative pole ear and the utmost point core has been guaranteed, the risk of short circuit takes place in contact such as apron and battery case.

Preferably, the positive connecting piece is U-shaped, and two ends of the positive connecting piece are respectively connected with a positive connecting rod.

Preferably, the negative electrode connecting piece is U-shaped, and two end parts of the negative electrode connecting piece are respectively connected with a negative electrode connecting rod.

Preferably, the apron includes apron body, anodal post, negative pole post, anodal connecting piece and negative pole connecting piece, anodal connecting rod and negative pole connecting rod are fixed in the bottom of apron body, the anodal post runs through the apron body and connects two anodal connecting rods through anodal connecting piece, the negative pole post runs through the apron body and connects two negative pole connecting rods through the negative pole connecting piece.

Preferably, the number of the positive connecting pieces and the negative connecting pieces is 4.

Compared with the prior art, the beneficial effects of the utility model are that:

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

fig. 2 is a schematic view of an installation structure of an embodiment of the utility model;

fig. 3 is a schematic structural view of a pole piece according to an embodiment of the present invention.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings attached to the specification.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless explicitly stated or limited otherwise, 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 implying any 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.

Referring to fig. 1 to 3, the present embodiment discloses a cover plate structure for connecting a pole piece, including a cover plate 1, a positive electrode connecting piece group 2 and a negative electrode connecting piece group 3, where two ends of the bottom of the cover plate 1 are respectively fixed with the positive electrode connecting piece group 2 and the negative electrode connecting piece group 3.

The positive connecting piece group 2 comprises positive connecting rods 21 and positive connecting pieces 22, the positive connecting rods 21 are fixed at one end of the bottom of the cover plate 1 in parallel, a plurality of positive connecting pieces 22 are fixed between the two positive connecting rods 21 side by side, and each positive connecting piece 22 is correspondingly connected with a positive lug 41 of each pole core 4.

Negative pole connecting piece group 3 includes negative pole connecting rod 31 and negative pole connection piece 32, negative pole connecting rod 31 parallel fixation is in the apron 1 bottom and is kept away from the one end of positive pole connecting piece group 2, is fixed with a plurality of negative pole connection pieces 32 side by side between two negative pole connecting rods 31, and every negative pole connection piece 32 corresponds the negative pole ear 42 of connecting every utmost point core 4.

Connect together through anodal connection piece 22 of single anodal connection piece and single utmost point core 4's anodal ear 41, single negative pole connection piece 22 links together with single utmost point core 4's negative pole ear 31, finally realize being connected of utmost point core 4 and apron 1, this connected mode not only can shorten the height of anodal ear 41 and negative pole ear 42 of utmost point core 4, the inside space utilization of battery has been improved, and the highly shortening of anodal ear 41 and negative pole ear 42, difficult buckling phenomenon appears, thereby guaranteed the anodal ear 41 and the pole piece in utmost point core 4 of negative pole ear 42 and utmost point core 4, the risk of short circuit takes place in contact such as apron 1 and battery housing.

The apron 1 is including apron body 11, anodal post 12, negative pole post 13, anodal connecting piece 14 and negative pole connecting piece 15, anodal connecting rod 21 and negative pole connecting rod 21 are fixed in the bottom of apron body 11, anodal post 12 runs through apron body 11 and connects two anodal connecting rods 21 through anodal connecting piece 14, two negative pole connecting rods 31 are connected through negative pole connecting piece 15 to negative pole post 13 runs through apron body 11, guarantees that anodal post 12 and negative pole post 13 can normally be connected with anodal ear 41 and the negative pole ear 42 electricity of utmost point core 4.

The positive connecting piece 22 is U-shaped, and two end parts of the positive connecting piece 22 are respectively connected with the positive connecting rod 21; the negative electrode connecting piece 32 is U-shaped, and two ends of the negative electrode connecting piece 32 are respectively connected with the negative electrode connecting rod 21.

Further, the number of the positive connecting pieces 22 and the number of the negative connecting pieces 32 are 4, and specifically corresponds to the number of the pole cores 4.

The utility model discloses an assembly process as follows: fixing positive pole connection piece group 2 and negative pole connection piece group 3 at the bottom both ends of apron body 11 earlier to be connected positive post 12 and two positive pole connecting rods 21 and to be connected negative pole post 13 and two negative pole connecting rods 31 through negative pole connecting piece 15 through positive pole connecting piece 14, then establish apron 1 lid on utmost point core 4, link together through single positive pole connection piece 22 and the anodal ear 41 of single utmost point core 4, single negative pole connection piece 32 links together with the negative pole ear 42 of single utmost point core 4, finally realize the connection of the surplus utmost point core 4 of apron 1.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The above embodiments only show the embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.

Claims

1. The utility model provides a connection utmost point core's apron structure which characterized in that: the anode connecting sheet group and the cathode connecting sheet group are fixed at two ends of the bottom of the cover plate respectively;

the positive connecting piece group comprises positive connecting rods and positive connecting pieces, the positive connecting rods are fixed at one end of the bottom of the cover plate in parallel, a plurality of positive connecting pieces are fixed between the two positive connecting rods side by side, and each positive connecting piece is correspondingly connected with a positive lug of each pole core;

2. The cover plate structure for connecting pole pieces as claimed in claim 1, wherein: the positive connecting piece is U-shaped, and two ends of the positive connecting piece are respectively connected with a positive connecting rod.

3. The cover plate structure for connecting pole pieces as claimed in claim 1, wherein: the negative pole connecting piece is U-shaped, and the two ends of the negative pole connecting piece are respectively connected with a negative pole connecting rod.

4. The cover plate structure for connecting pole pieces as claimed in claim 1, wherein: the apron is including apron body, anodal post, negative pole post, anodal connecting piece and negative pole connecting piece, anodal connecting rod and negative pole connecting rod are fixed in the bottom of apron body, the anodal post runs through the apron body and connects two anodal connecting rods through anodal connecting piece, the negative pole post runs through the apron body and connects two negative pole connecting rods through the negative pole connecting piece.

5. The cover plate structure for connecting pole pieces as claimed in claim 1, wherein: the number of the positive connecting pieces and the number of the negative connecting pieces are 4.