公开(公告)号：US20230070569A1

公开(公告)日：2023-03-09

申请号：US17759762

申请日：2020-11-27

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Nozomi ONAKA ,  Tomoyuki OKADA ,  Kazuto SHIINA

IPC分类号： H01M50/562 ,  H01M50/557 ,  H01M50/178 ,  H01M50/105 ,  B32B3/08 ,  B32B27/32

摘要： A lead member for a secondary battery includes a conductor, and a covering material. The conductor has an upper surface and a lower surface that extend in a length direction and a width direction and are opposite to each other, and a first side surface and a second side surface that extend in the length direction and a thickness direction, connect the upper surface to the lower surface, and are opposite to each other. The covering material is formed by sticking a plurality of insulating films together to surround the upper surface, the first side surface, the lower surface, and the second side surface. Each of the plurality of insulating films includes an inner layer and an outer layer, in an order from a side closer to the conductor. The lead member includes a first insulator and a second insulator on the first side surface and the second side surface of the conductor respectively, in an area surrounded by the covering material of the conductor. The first insulator and the second insulator have a lower melting point than the inner layer. The first insulator and the second insulator are placed to be separated from each other.