公开(公告)号：US20210036298A1

公开(公告)日：2021-02-04

申请号：US16964136

申请日：2019-01-30

Applicant: GS Yuasa International Ltd.

Inventor： Hirokazu KAMBAYASHI ,  Shohel YAMAO ,  Takuya AOYAMA

IPC: H01M2/26 ,  H01M10/0587

Abstract: An energy storage device includes: an electrode assembly; a case that houses the electrode assembly; and a spacer that is a side spacer disposed between the electrode assembly and the case. The spacer has a rear portion disposed to face the electrode-assembly end portion, a side portion extended in a direction along the side surface of the electrode assembly, and a connection that rotatably connects the side portion to the rear portion.

公开(公告)号：US20190044105A1

公开(公告)日：2019-02-07

申请号：US16075520

申请日：2017-01-19

Applicant: GS Yuasa International Ltd.

Inventor： Kazuto MAEDA ,  Hirokazu KAMBAYASHI

IPC: H01M2/06 ,  H01M4/70 ,  H01M2/26 ,  H01M2/04 ,  H01M2/08 ,  H01M10/0525 ,  H01M4/13

Abstract: A method for manufacturing an energy storage device includes a swaging step in which a swaged portion is formed by swaging a tip portion, penetrating a positive electrode terminal or a positive electrode current collector and projecting in a predetermined direction from the positive electrode terminal or the positive electrode current collector, of a shaft portion. In the swaging step, the tip portion of the shaft portion is swaged by a punch which includes a pressing surface, the pressing surface including a punch-side first concave portion which is concaved in the predetermined direction and a punch-side second concave portion which is concaved in the predetermined direction more than the punch-side first concave portion at an inner peripheral side of the punch-side first concave portion.

公开(公告)号：US20180375069A1

公开(公告)日：2018-12-27

申请号：US15781450

申请日：2016-12-28

Applicant: GS Yuasa International Ltd.

Inventor： Hirokazu KAMBAYASHI ,  Kazuto MAEDA

IPC: H01M2/08 ,  H01G9/008 ,  H01G9/10 ,  H01G9/00 ,  H01M2/06

CPC classification number: H01M2/08 ,  H01G9/0029 ,  H01G9/008 ,  H01G9/10 ,  H01G11/74 ,  H01G11/80 ,  H01G11/84 ,  H01M2/0404 ,  H01M2/06 ,  H01M2/30

Abstract: A sealing member (positive electrode first sealing member) disposed between a terminal (positive electrode terminal), which is provided on a case of an energy storage device, and the case or between a current collector (positive electrode current collector), which is electrically connected with the terminal, and the case. The sealing member includes a first surface (bottom surface) which faces the case and a second surface (bottom surface) which is opposite to the first surface and faces the terminal or the current collector. A first protrusion is formed on the first surface, the first protrusion surrounding a shaft portion of the terminal. A second protrusion is formed on the second surface, the second protrusion surrounding the shaft portion of the terminal. A protrusion amount of the first protrusion is different from a protrusion amount of the second protrusion.

公开(公告)号：US20180287124A1

公开(公告)日：2018-10-04

申请号：US15763427

申请日：2016-09-27

Applicant: GS Yuasa International Ltd

Inventor： Hirokazu KAMBAYASHI ,  Kazuto MAEDA

IPC: H01M2/26 ,  H01G9/048 ,  H01G9/08 ,  H01G9/00 ,  H01M10/0585 ,  H01M2/04

CPC classification number: H01M2/26 ,  H01G9/0029 ,  H01G9/048 ,  H01G9/08 ,  H01G11/74 ,  H01G11/76 ,  H01G11/84 ,  H01M2/0426 ,  H01M2/0469 ,  H01M2/0473 ,  H01M2/263 ,  H01M10/0585 ,  Y02E60/13 ,  Y02T10/7022

Abstract: An energy storage device includes: an electrode assembly formed by stacking plates; and a first conductive member welded to one of both surfaces of a converged portion on an end portion of the electrode assembly without covering the converged portion from an end portion side, wherein a welding surface of a welded portion where the electrode assembly and the first conductive member are welded to each other is disposed at a position recessed from an outer surface of the first conductive member.

公开(公告)号：US20180069227A1

公开(公告)日：2018-03-08

申请号：US15697245

申请日：2017-09-06

Applicant: GS Yuasa International Ltd.

Inventor： Kazuto MAEDA ,  Hirokazu KAMBAYASHI ,  Shohei YAMAO

IPC: H01M2/30 ,  H01M2/04 ,  H01M2/06 ,  H01M10/04 ,  H01M10/0525

CPC classification number: H01M2/30 ,  H01M2/0473 ,  H01M2/06 ,  H01M2/22 ,  H01M10/0431 ,  H01M10/0525 ,  H01M2220/20

Abstract: An energy storage device including: an electrode assembly having a body portion and a first tab portion projecting from the body portion; and a container housing the electrode assembly, wherein a first current collector electrically connected to the first tab portion or the first tab portion, and the container have a swaged joint portion having a concavo-convex structure projecting toward the other side from one side.