公开(公告)号：US12068485B2

公开(公告)日：2024-08-20

申请号：US17283659

申请日：2019-10-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shigeki Matsuta

IPC: H01M4/66 ,  H01M4/525 ,  H01M10/0525 ,  H01M50/46 ,  H01M4/131

CPC classification number: H01M4/666 ,  H01M4/525 ,  H01M4/667 ,  H01M10/0525 ,  H01M50/46 ,  H01M4/131

Abstract: Provided is a secondary battery that can sufficiently suppress a leakage current even when conductive foreign matter passes through a separator to cause a minute short-circuit. The secondary battery according to an aspect of the present disclosure comprises: a positive electrode; a negative electrode; and a separator interposed between the positive electrode and the negative electrode, wherein each of the positive electrode and the negative electrode has a current collector and a mixed material layer formed on the surface of the current collector. At least one of the positive electrode and the negative electrode has a semiconductor layer formed substantially over the entire surface of the mixed material layer and having a higher resistance than the mixed material layer.

公开(公告)号：US20220094023A1

公开(公告)日：2022-03-24

申请号：US17420165

申请日：2019-11-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuma Kamiyama ,  Shigeki Matsuta ,  Yoshiaki Araki

IPC: H01M50/533 ,  H01M10/0585 ,  H01M50/147 ,  H01M50/543 ,  H01M50/183

Abstract: A secondary battery according to an aspect of the present disclosure includes a multilayer electrode body obtained by laminating multiple electrode plates with a separator interposed in between, multiple electrode tabs protruding from first ends of the multiple electrode plates, an exterior body having an opening receiving the multilayer electrode body, a sealing plate that closes the opening, a collector disposed on the sealing plate and connected to the multiple electrode tabs with a connector, and a binding member that binds the multiple electrode tabs between the connector and the multilayer electrode body. A secondary battery with this structure prevents damages of electrode tabs due to abrasion between the electrode tabs.

公开(公告)号：US11450917B2

公开(公告)日：2022-09-20

申请号：US16639845

申请日：2018-12-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuya Oka ,  Hiroshi Yoshizawa ,  Shigeki Matsuta ,  Yoshiaki Araki

IPC: H01M50/293 ,  H01M50/289 ,  H01M50/291

Abstract: The power storage device is provided with a cell stack body formed by alternately arranging a plurality of secondary cells and a plurality of buffer plates. Each of the buffer plates has a non-deformable section and a deformable section that is elastically deformed according to a volume change in the secondary cell. The non-deformable section has a through hole in which the deformable section is fitted. The deformable section is formed thicker than the non-deformable section.

公开(公告)号：US20210135317A1

公开(公告)日：2021-05-06

申请号：US16639845

申请日：2018-12-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuya Oka ,  Hiroshi Yoshizawa ,  Shigeki Matsuta ,  Yoshiaki Araki

IPC: H01M50/48 ,  H01M50/474

Abstract: The power storage device is provided with a cell stack body formed by alternately arranging a plurality of secondary cells and a plurality of buffer plates. Each of the buffer plates has a non-deformable section and a deformable section that is elastically deformed according to a volume change in the secondary cell. The non-deformable section has a through hole in which the deformable section is fitted. The deformable section is formed thicker than the non-deformable section.

公开(公告)号：US20220013789A1

公开(公告)日：2022-01-13

申请号：US17283659

申请日：2019-10-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shigeki Matsuta

IPC: H01M4/66 ,  H01M10/0525 ,  H01M50/46 ,  H01M4/525

Abstract: Provided is a secondary battery that can sufficiently suppress a leakage current even when conductive foreign matter passes through a separator to cause a minute short-circuit. The secondary battery according to an aspect of the present disclosure comprises: a positive electrode; a negative electrode; and a separator interposed between the positive electrode and the negative electrode, wherein each of the positive electrode and the negative electrode has a current collector and a mixed material layer formed on the surface of the current collector. At least one of the positive electrode and the negative electrode has a semiconductor layer formed substantially over the entire surface of the mixed material layer and having a higher resistance than the mixed material layer.