CN212342770U

CN212342770U - Easily weld formula lithium cell apron

Info

Publication number: CN212342770U
Application number: CN202021279944.4U
Authority: CN
Inventors: 王文林
Original assignee: Suzhou Juhong Communication Computer Technology Co ltd
Current assignee: Suzhou Juhong Communication Computer Technology Co ltd
Priority date: 2020-07-04
Filing date: 2020-07-04
Publication date: 2021-01-12
Anticipated expiration: 2030-07-04

Abstract

The utility model provides an easily weld formula lithium cell apron, is including the apron main part that is equipped with two electrode through-holes, and two electrode pressing plates are insulating connection respectively in two electrode through-holes, and lower insulating pad is connected below the apron main part, and the lower boss is constituteed to the lower part of electrode pressing plate, and the bottom surface of protruding platform and the lower insulating pad bottom surface of electrode through-hole below keep level down, and two electrode connection upper surfaces that lie in insulating pad below down are welded fastening with the lower boss bottom surface plane of two electrode pressing plates respectively. The utility model has the advantages of rational in infrastructure, boss and bottom surface and lower insulating pad bottom surface keep flat under the lower part of electrode clamp plate constitutes, and electrode connection piece and electrode clamp plate can plane welded fastening like this, need not to bulge and put into the operation in the electrode through-hole, and area of contact is abundant, convenient operation, welded efficiency and quality obviously improve to the heat dissipation is good, can not high temperature damage peripheral accessory.

Description

Easily weld formula lithium cell apron

The technical field is as follows: the utility model relates to a lithium battery fitting, especially the apron of lithium cell.

Background art: electrode assemblies such as an electrode pressing plate and a sealing washer of the lithium battery are generally designed and assembled in an electrode through hole of a cover plate, and an electrode connecting sheet at the lower part can contact the electrode pressing plate and is welded and fixed only by bulging the upper part into the electrode through hole. The structure has small operation space during welding, insufficient contact area and great influence on the welding efficiency and quality. Moreover, welding in a narrow space is disadvantageous to heat dissipation, and peripheral accessories are easily damaged at high temperature.

The invention content is as follows: the utility model provides a to prior art not enough, the utility model provides a rational in infrastructure, convenient welded easily welds formula lithium cell apron.

The utility model discloses a be equipped with the apron main part of two electrode through-holes, two electrode pressing plates insulating connection respectively are in two electrode through-holes, and lower insulating pad is connected below the apron main part, and the lower part of electrode pressing plate constitutes down the boss, and the lower insulating pad bottom surface of the bottom surface of lower boss and electrode through-hole below department is held level, two electrode connection upper surfaces that lie in lower insulating pad below respectively with the lower boss bottom surface plane welded fastening of two electrode pressing plates.

The utility model has the advantages of rational in infrastructure, boss and bottom surface and lower insulating pad bottom surface keep flat under the lower part of electrode clamp plate constitutes, and electrode connection piece and electrode clamp plate can plane welded fastening like this, need not to bulge and put into the operation in the electrode through-hole, and area of contact is abundant, convenient operation, welded efficiency and quality obviously improve to the heat dissipation is good, can not high temperature damage peripheral accessory.

The invention is further described with reference to the following figures and examples.

Description of the drawings: fig. 1 is a main schematic view of the embodiment.

Fig. 2 is a perspective exploded view of the embodiment.

Fig. 3 is an enlarged partial sectional view a-a of fig. 1.

Fig. 4 is a main schematic view of the electrode platen.

Fig. 5 is a schematic view of the cover body of fig. 3 with the upper flange in an un-inverted state.

The specific implementation mode is as follows: as shown in fig. 1 to 4, two electrode through holes 2 are formed in a cap plate body 1, two electrode pressing plates 3 as a positive electrode and a negative electrode are respectively insulated and connected in the two electrode through holes 2, and a lower insulating pad 4 is connected to the lower surface of the cap plate body 1. The lower part of the electrode pressing plate 3 forms a lower boss 5, the bottom surface of the lower boss 5 is flush with the bottom surface of the lower insulating pad 4 below the electrode through hole 2, and the upper surfaces of two electrode connecting sheets 6 below the lower insulating pad 4 are respectively welded and fixed with the bottom surfaces of the lower bosses 5 of the two electrode pressing plates 3.

In fact, as shown in fig. 5, the lower part of each electrode through hole 2 is provided with a bottom edge 7 which is sunk and turned inwards, and the height position of the bottom edge 7 is lower than the bottom surface position of the cover plate main body 1, so that a sunk mounting space of the electrode press plate is formed. Therefore, the electrode pressing plate 3 can be installed in a sinking mode on the premise that the thickness of the electrode pressing plate 3 is not reduced, namely the height difference between the surface of the electrode pressing plate 3 and the upper surface of the cover plate main body 1 is reduced or leveled, the height of a battery shell can be further increased under the condition that the total height of a battery is limited, and the effective space of the battery is increased in volume.

In this embodiment, the electrode through holes 2 are provided with upper flanges 8, the electrode pressing plates 3 disposed in the respective electrode through holes 2 are all padded with sealing gaskets 9, the peripheries of the electrode pressing plates 3 are all sleeved with insulating rings 10, and the upper flanges 8 of the electrode through holes 2 are turned inwards to press the insulating rings 10, so as to form an electrode sealing structure. The upper part of the electrode assembly does not need to be welded, and the assembly is simple and reliable. In addition, the periphery of the upper flange 8 of the electrode through hole 2 above the cover plate main body 1 can be covered with a holding decorative ring 11, so that a gap can be shielded, and the cover plate is attractive and dustproof.

Claims

1. The utility model provides an easy formula of welding lithium cell apron, is including the apron main part that is equipped with two electrode through-holes, and two electrode pressing plates are insulating connection respectively in two electrode through-holes, and lower insulating pad is connected below the apron main part, characterized in that: the lower part of the electrode pressing plate (3) forms a lower lug boss (5), the bottom surface of the lower lug boss (5) is flush with the bottom surface of the lower insulating pad (4) below the electrode through hole (2), and the upper surfaces of two electrode connecting sheets (6) below the lower insulating pad (4) are respectively welded and fixed with the bottom surfaces of the lower lug bosses (5) of the two electrode pressing plates (3).

2. The easy-to-weld lithium battery cover plate as set forth in claim 1, wherein: the lower part of each electrode through hole (2) is provided with a bottom edge (7) which is sunk and turned inwards, and the height position of the bottom edge (7) is lower than the bottom surface position of the cover plate main body (1), so that a sunk mounting space of the electrode press plate is formed.

3. The easy-to-weld lithium battery cover plate according to claim 1 or 2, wherein: the electrode through holes (2) are provided with upper flanges (8), the electrode pressing plates (3) arranged in the respective electrode through holes (2) are all padded with sealing gaskets (9), the peripheries of the electrode pressing plates (3) are respectively sleeved with insulating rings (10), and the upper flanges (8) of the electrode through holes (2) are turned inwards to press the insulating rings (10) to form an electrode sealing structure.