公开(公告)号：US20210328311A1

公开(公告)日：2021-10-21

申请号：US16479761

申请日：2018-01-23

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hirofumi Furukawa ,  Hiroyuki Yamada

IPC: H01M50/578 ,  H01M50/147 ,  H01M10/04 ,  H01M50/188

Abstract: A conductive member is disposed near a side of the sealing plate facing an electrode assembly with a first insulating member disposed therebetween. The conductive member has a conductive-member opening portion. The conductive member is connected to a positive electrode terminal that projects toward au outside of the battery from the sealing plate. The conductive-member opening portion of the conductive member is sealed by a deformation plate. The deformation plate is connected to a first positive-electrode current collector of a current collecting member, which is electrically connected to positive electrode plates. The deformation plate is deformed in response to an increase in pressure in a rectangular exterior body, and the conductive path between the positive electrode plate and the positive electrode terminal is broken in response to the deformation of the deformation plate. A cover is disposed between the first positive-electrode current collector and the electrode assembly.

公开(公告)号：US20210296746A1

公开(公告)日：2021-09-23

申请号：US17341594

申请日：2021-06-08

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroyuki Yamada

IPC: H01M50/593 ,  H01M50/547 ,  H01M50/588 ,  H01M50/553

Abstract: A conductive member (61) is disposed near a side of the sealing plate (2) facing the inside of a battery with a first insulating member (10) disposed therebetween. The conductive member (61) has a conductive-member opening portion (61f) at a side facing the electrode assembly. An inserting portion (7b) of a positive electrode terminal (7) is inserted through a third terminal-receiving hole (61c) in the conductive member (61) and connected to the conductive member (61). The conductive-member opening portion (61f) of the conductive member (61) is sealed by a deformation plate (62), and the deformation plate (62) is connected to a first positive-electrode current collector (6a), which is electrically connected to positive electrode plates. The conductive member (61) includes a pressing projection (61e) that projects toward the first insulating member (10) from a portion thereof that faces the first insulating member (10).

公开(公告)号：US20210013474A1

公开(公告)日：2021-01-14

申请号：US17019498

申请日：2020-09-14

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroyuki Yamada

IPC: H01M2/12 ,  H01M2/02 ,  H01M10/04 ,  H01M2/34 ,  H01M2/06 ,  H01M2/04 ,  H01M2/30

Abstract: A secondary battery includes: an electrode assembly including a positive electrode plate and a negative electrode plate; an exterior housing that has an opening and houses the electrode assembly; and a sealing plate (2) that seals the opening. The exterior housing and the sealing plate (2) form a battery case. A deformable member (19) that deforms when the pressure inside the battery case reaches a prescribed value or higher and a gas release valve (18) that breaks when the pressure inside the battery case reaches a prescribed value or higher to release gas inside the battery case to the outside of the battery case are provided in the sealing plate (2). A metallic reinforcing member (30) is connected to the inner surface of the sealing plate (2).

公开(公告)号：US10811650B2

公开(公告)日：2020-10-20

申请号：US16312395

申请日：2017-06-27

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroyuki Yamada

IPC: H01M2/12 ,  H01M2/02 ,  H01M10/04 ,  H01M2/34 ,  H01M2/06 ,  H01M2/04 ,  H01M2/30

Abstract: A secondary battery includes: an electrode assembly including a positive electrode plate and a negative electrode plate; an exterior housing that has an opening and houses the electrode assembly; and a sealing plate (2) that seals the opening. The exterior housing and the sealing plate (2) form a battery case. A deformable member (19) that deforms when the pressure inside the battery case reaches a prescribed value or higher and a gas release valve (18) that breaks when the pressure inside the battery case reaches a prescribed value or higher to release gas inside the battery case to the outside of the battery case are provided in the sealing plate (2). A metallic reinforcing member (30) is connected to the inner surface of the sealing plate (2).

公开(公告)号：US20200052265A1

公开(公告)日：2020-02-13

申请号：US16342733

申请日：2017-10-20

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroyuki Yamada

IPC: H01M2/12 ,  H01M2/26

Abstract: To provide a highly reliable rectangular secondary battery. A rectangular secondary battery (20) includes: an electrode body (3) that includes a positive electrode plate and a negative electrode plate; a rectangular casing (1) that includes an opening and that contains the electrode body (3); and a sealing plate (2) that seals the opening of the rectangular casing (1). The sealing plate (2) includes a gas discharge valve (17) that ruptures when the pressure inside the rectangular casing (1) has a predetermined value or more to discharge gas inside the rectangular casing (1) to outside the rectangular casing (1). A portion of a second negative electrode current collector (8b) is disposed, as a shielding member, at a location that is between the sealing plate (2) and the electrode body (3) and that faces the gas discharge valve (17).

公开(公告)号：US20190273277A1

公开(公告)日：2019-09-05

申请号：US16255019

申请日：2019-01-23

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Yohei Muroya ,  Hiroyuki Yamada

IPC: H01M10/04 ,  H01M2/10 ,  H01M2/34 ,  H01M2/20 ,  H01M10/0525

Abstract: Provided are a secondary battery and a battery pack including the secondary battery. A sealing plate has a positive electrode terminal attachment hole. A positive electrode terminal penetrates the positive electrode terminal attachment hole. An external conductive member is connected to a portion of the positive electrode terminal located on the battery outer side with respect to the sealing plate. The conduction path between a positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. A first insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. A second insulating member having higher thermal resistance than the first insulating member is disposed between the external conductive member and the sealing plate.

公开(公告)号：US11955592B2

公开(公告)日：2024-04-09

申请号：US17396920

申请日：2021-08-09

Applicant: SANYO Electric Co., Ltd.

Inventor： Hiroshi Takabayashi ,  Hiroyuki Yamada

IPC: H01M50/147 ,  H01M10/04 ,  H01M50/103 ,  H01M50/176 ,  H01M50/531 ,  H01M50/55 ,  H01M50/553 ,  H01M50/593 ,  H01M50/627

CPC classification number: H01M10/0413 ,  H01M50/103 ,  H01M50/147 ,  H01M50/176 ,  H01M50/531 ,  H01M50/55 ,  H01M50/553 ,  H01M50/593 ,  H01M50/627 ,  H01M2220/20

Abstract: Provided is an electricity storage device having a high volumetric energy density and high reliability. The electricity storage device includes: an electrode assembly including first and second electrode plates and a separator interposed therebetween; an exterior housing that houses the electrode assembly; a lid that covers an opening of the exterior housing; and electrode terminals that are electrically connected to the electrode assembly and partially protrude from the lid to the outside. The lid has a liquid injection hole for injecting an electrolytic solution into the exterior housing. A tubular member extending from the lid toward the electrode assembly is provided between the outer surface of the lid and the electrode assembly so as to surround an opening of the liquid injection hole. A covering member connected to the tubular member and interposed between the liquid injection hole and the electrode assembly is provided.

公开(公告)号：US20190312253A1

公开(公告)日：2019-10-10

申请号：US16335857

申请日：2017-09-28

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroyuki Yamada

IPC: H01M2/26 ,  H01M2/02 ,  H01M2/06 ,  H01M10/04

Abstract: To provide a square secondary battery with a high reliability. A square secondary battery (20) including an electrode body (3) having a positive electrode plate and a negative electrode plate, a square outer package (1) that includes an opening and that houses the electrode body (3), and a sealing plate (2) that seals the opening of the square outer package (1), in which an inner side insulating member (12) serving as a first insulating member is disposed between the sealing plate (2) and a negative electrode collector member (8) and is fixed to the sealing plate (2), and in which a second insulating member (80) disposed between the sealing plate (2) and the electrode body (3) is connected to the inner side insulating member (12) serving as the first insulating member.