公开(公告)号：US20220384854A1

公开(公告)日：2022-12-01

申请号：US17786272

申请日：2020-12-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Atsushi Kawamura ,  Daiki Watanabe ,  Yu Matsui ,  Shingo Tode

IPC: H01M10/0587 ,  H01M50/409 ,  H01M50/103

Abstract: A secondary battery configured so as to comprise: a plurality of positive electrodes each including a positive electrode core and a positive electrode active substance disposed on the positive electrode core; a plurality of negative electrodes each including a negative electrode core and a negative electrode active substance disposed upon the negative electrode core; at least one separator; and an adhesive coated so as to have a substantially constant area density on at least one side surface in the thickness direction of the separator. The secondary battery includes a laminated section in which the positive electrodes and the negative electrodes are alternately stacked, having the separator therebetween. The area of adhered sections adhered by the adhesive is greater on the outside in the lamination direction of the laminated section than on the inside in the lamination direction.