公开(公告)号：US20220166094A1

公开(公告)日：2022-05-26

申请号：US17440224

申请日：2020-01-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIDEYUKI UEDA ,  SUGURU MATSUMURA

IPC: H01M50/171 ,  H01M10/0587 ,  H01M50/152

Abstract: A battery comprising: a case having an opening at one end and a bottom at the other end. The case including a cylindrical side surface, an electrode group accommodated in the case together with an electrolytic solution, a cap that seals the opening of the case, and a gasket disposed between the opening of the case and the cap. The case includes an annular groove protruding inward of the case in a part of the cylindrical side surface. The gasket includes a seal accommodating the cap and a cylindrical part extending from the seal toward the electrode group. The cylindrical part of the gasket and a deepest groove of the case have portions in contact with each other, and a contact of the gasket is compressed by the deepest groove of the case.

公开(公告)号：US20180342724A1

公开(公告)日：2018-11-29

申请号：US15779091

申请日：2016-11-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SADAYUKI OKAZAKI ,  YASUTAKA KOGETSU ,  KATSUHISA WADASAKI ,  SUGURU MATSUMURA

IPC: H01M2/26 ,  H01M2/04 ,  H01M2/30 ,  B23K20/10

CPC classification number: H01M2/26 ,  B23K20/10 ,  B23K20/106 ,  H01M2/023 ,  H01M2/04 ,  H01M2/0413 ,  H01M2/046 ,  H01M2/0486 ,  H01M2/22 ,  H01M2/30 ,  H01M10/0422 ,  H01M10/0431

Abstract: A battery includes: an electrode group including a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode; an electrolyte; a container for accommodating the electrode group and the electrolyte; a sealing member for blocking an opening in the container; and a first lead for electrically connecting the first electrode to the sealing member. The first lead has a weld region welded to the sealing member, and the weld region has at least one first bump along the longitudinal direction of the first lead. The cross section of the boundary between the weld region and a non-weld region on the first electrode side has a projecting shape corresponding to the bump.