电池负极连接结构及卷绕式圆柱形电池

Battery negative pole connection structure and coiling formula cylinder battery

Abstract

The utility model discloses a battery negative pole connection structure and coiling formula cylinder battery, including the box hat of the built -in article that curl and the negative pole utmost point ear of being connected with the negative pole piece of the article that curl, the coating of box hat bottom has an annular insulating rete, should insulating rete with the box hat bottom with to curl article isolated, the middle zone who is somebody's turn to do the insulation rete is spotwelding area, bears the welding of negative pole utmost point ear be in the spotwelding area of box hat bottom. Its advantage is: the insulating film is scribbled to the box hat bottom, has saved the use of negative pole end insulating piece, has saved the material, has also saved the space simultaneously, can hold more active material, has improved the capacity of battery, and simplified production processes, saved manufacturing cost, avoided since the negative pole insulating piece leak put, the production of landing, the battery defective products that leads to of bending, improved the yield of battery.
本实用新型公开了电池负极连接结构及卷绕式圆柱形电池,包括内置卷曲品的钢壳和与卷曲品的负极片连接的负极极耳,钢壳底部涂覆有环状的绝缘膜层,该绝缘膜层将钢壳底部与卷曲品相隔离,该绝缘膜层的中间区域为点焊区,负所述的负极极耳焊接在所述的钢壳底部的点焊区。其优点是:钢壳底部涂绝缘膜,省去了负极端绝缘片的使用,节省了材料,同时也节省了空间,可以容纳更多的活性物质,提高了电池的容量;并且简化了生产工序,节省了生产成本,避免了由于负极绝缘片漏放、滑落、折弯导致的电池不良品的产生,提高了电池的成品率。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle