CN216015623U

CN216015623U - Utmost point ear and utmost point post connection structure of large capacity battery

Info

Publication number: CN216015623U
Application number: CN202121362807.1U
Authority: CN
Inventors: 翟腾飞; 雷政军; 刘毅; 张三学; 郑高锋
Original assignee: Shaanxi Olympus Power Energy Co Ltd
Current assignee: Shaanxi Olympus Power Energy Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-03-11
Anticipated expiration: 2031-06-18

Abstract

The utility model relates to a pole ear and pole column connecting structure of a large-capacity battery, wherein a pole column of the connecting structure is provided with a pole column current collecting disc, and the pole ear is provided with the pole column current collecting disc.

Description

Utmost point ear and utmost point post connection structure of large capacity battery

Technical Field

The application relates to the field of batteries, in particular to a tab and pole connecting structure of a large-capacity battery.

Background

The square battery with the maximum capacity of the lithium battery in the current market is 400Ah, the cylindrical battery with the maximum capacity is not more than 100Ah, the battery pole and the pole lug are connected through a sheet connecting piece, the requirement of charging and discharging of the large-capacity battery cannot be met, if a battery with the capacity larger than 1000Ah is designed, the connection between the pole and the pole lug becomes the largest problem, the large-capacity battery pole collecting disc and the pole lug collecting disc need to be completely connected, but in the welding process, the pole vertical downward projection of the pole collecting disc is incapable of being welded with the pole lug collecting disc due to the influence of the pole, the transmission surface of current is greatly reduced, and the contact surface is heated due to poor contact, so that the charging and discharging of the large-capacity battery are influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the existing equipment, the utility model provides a connection structure of a pole lug and a pole column of a high-capacity battery.

According to the tab and pole connecting structure of the high-capacity battery, the pole in the connecting structure is provided with the pole collecting disc, the tab is provided with the pole collecting disc, and the conductive cushion layer is additionally arranged on the part which cannot be welded between the pole collecting disc and the pole collecting disc.

Preferably, the tab and pole connection structure of the large-capacity battery, wherein the conductive cushion layer is sheet-shaped and has a thickness not greater than 3 mm.

Preferably, the tab and pole connecting structure of the large-capacity battery is characterized in that the conductive conducting coating is arranged in a non-weldable region between the tab current collecting disc and the pole current collecting disc, and the area of the non-weldable region is equal to the area of the non-weldable region.

Preferably, the tab and the post of the high-capacity battery are connected, wherein the conductive cushion layer is made of a metal or non-metal conductive material.

Preferably, the tab and the pole connecting structure of the large-capacity battery, wherein the conductive cushion layer is made of one or more of silver sheets, copper sheets, nickel sheets, aluminum sheets, graphite sheets, foamed silver, foamed copper, foamed aluminum, foamed nickel and graphite cotton.

Preferably, the tab and the pole of the high-capacity battery are connected, wherein the conductive cushion layer is a silver sheet, a copper sheet, foamed silver or foamed copper.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

Fig. 1 is a schematic view of a pole with a current collecting disc according to the present invention.

Fig. 2 is a schematic view of a winding core with a tab and current collector.

Fig. 3 is a schematic view of the conductive pad layer.

Fig. 4 is a position diagram of the conductive cushion layer and the tab current collecting disc.

Fig. 5 is a schematic view of the welding installation of the pole with the current collecting disc, the conductive cushion layer and the pole lug with the current collecting disc.

Fig. 6 is a pole mounting completion diagram.

Description of reference numerals:

1-pole with current collecting disc, 2-pole ear current collecting disc, 3-conductive cushion layer, 4-pole upper insert, 5-insulating gasket, 6-insulating connecting piece, 7-battery upper cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1 to 6, the conductive cushion layer 3 is placed at the geometric center of the pole-ear current-collecting disc 2, the pole 1 with the current-collecting disc is pressed on the pole-ear current-collecting disc 2, the two current-collecting discs are aligned, and the other pole-column current-collecting discs except the pole are welded with the pole-ear current-collecting disc by a laser welding machine, so that the conductive cushion layer is pressed after welding.

As shown in fig. 6, in order to prevent the pole from contacting the battery upper cover during and after installation, the insulating gasket 5 is sleeved into the battery upper cover 7, then the insulating gasket 5 is aligned with the installation holes of the battery upper cover 7, the battery upper cover 7 sleeved with the insulating gasket 5 is sleeved into the current collecting disc pole 1 with the current collecting disc in fig. 5, and the installation holes are aligned.

The pole upper insert 4 is sleeved into the pole 1 with the current collecting disc and aligned with the mounting hole of the battery upper cover 7, the mounting holes are tensioned by the insulating connecting piece 6, and the pole assembly is completed, so that the pole ear and pole connecting structure of the high-capacity battery can be obtained.

It will be appreciated by those skilled in the art that the utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the utility model are intended to be embraced therein.

Claims

1. The utility model provides a utmost point ear and utmost point post connection structure of large capacity battery, its characterized in that, utmost point post has utmost point post current-collecting disc, utmost point ear has utmost point ear current-collecting disc the utmost point post current-collecting disc and utmost point ear current-collecting disc can not welded part have increased electrically conductive bed course.

2. The tab and post connection structure of a large capacity battery as claimed in claim 1, wherein the conductive pad layer is in the form of a sheet having a thickness of not more than 3 mm.

3. The tab and post connection structure of a large-capacity battery as claimed in claim 1, wherein the conductive coating is disposed in a non-weldable region between the tab current collecting plate and the post current collecting plate, and has an area equal to that of the non-weldable region.

4. The tab and post connecting structure of a large capacity battery as claimed in claim 1, wherein the conductive cushion layer is a metal or non-metal conductive material.

5. The tab and post connection structure of a large-capacity battery as claimed in claim 4, wherein the conductive cushion layer is made of silver sheet, copper sheet, nickel sheet, aluminum sheet, silver foam, copper foam, nickel foam, aluminum foam, graphite sheet, and graphite wool.

6. The tab and post connection structure of a large capacity battery as claimed in claim 5, wherein the conductive cushion layer is a silver sheet, a copper sheet, foamed silver or foamed copper.