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1. WO2020137372 - SEALED BATTERY

Publication Number WO/2020/137372
Publication Date 02.07.2020
International Application No. PCT/JP2019/047082
International Filing Date 02.12.2019
IPC
H01M 2/04 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
02Cases, jackets or wrappings
04Lids or covers
H01M 2/08 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
02Cases, jackets or wrappings
08Sealing materials
H01M 2/26 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
20Current-conducting connections for cells
22Fixed connections, i.e. not intended for disconnection
26Electrode connections
H01M 2/34 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
20Current-conducting connections for cells
34with provision for preventing undesired use or discharge
CPC
H01M 50/147
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
10Primary casings, jackets or wrappings of a single cell or a single battery
147Lids or covers
H01M 50/183
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
10Primary casings, jackets or wrappings of a single cell or a single battery
183Sealing members
H01M 50/531
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
50Current conducting connections for cells or batteries
531Electrode connections inside a battery casing
H01M 50/572
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
50Current conducting connections for cells or batteries
572Means for preventing undesired use or discharge
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants
  • 三洋電機株式会社 SANYO ELECTRIC CO., LTD. [JP]/[JP]
Inventors
  • 吉田 政幹 YOSHIDA Masayoshi
  • 奥谷 仰 OKUTANI Oose
  • 野上 嵩広 NOGAMI Takahiro
  • 高野 曉 TAKANO Akira
Agents
  • 徳田 佳昭 TOKUDA Yoshiaki
  • 西田 浩希 NISHIDA Hiroki
Priority Data
2018-24638528.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SEALED BATTERY
(FR) BATTERIE SCELLÉE
(JA) 密閉電池
Abstract
(EN)
The purpose of the present disclosure is to reduce the possibility of the generation of reconduction after the electrical conduction between a valve body and a metal plate has been disconnected. This sealed battery that is an example of the present embodiment is provided with: a battery case that includes a cylindrical exterior can having a bottom and an opening sealing body that closes an opening of the outer can; a gasket that is arranged between the exterior can and the opening sealing body; and an electrode body that is contained inside the battery case. The opening sealing body has: a metal plate that includes an annular part to which an electrode lead is electrically connected, and a disconnecting part that is separated from the annular part when the inner pressure of the battery case exceeds a predetermined threshold; a valve body that is arranged further to the outside of the battery case than the metal plate; and an insulating plate that is arranged between the metal plate and the valve body and insulates portions other than a connecting portion of the metal plate and the valve body. The insulating plate or the gasket is provided with an elastic deformation part that deforms in the direction of the valve body when the disconnecting part of the metal plate is separated from the annular part.
(FR)
L'objectif de la présente invention est de réduire la possibilité de la génération de réconduction après que la conduction électrique entre un corps de soupape et une plaque métallique a été déconnectée. Cette batterie scellée qui est un exemple du présent mode de réalisation comprend : un compartiment de batterie qui comprend un compartiment extérieur cylindrique ayant un fond et un corps d'étanchéité d'ouverture qui ferme une ouverture du compartiment extérieur ; un joint d'étanchéité qui est disposé entre le compartiment extérieur et le corps d'étanchéité d'ouverture ; et un corps d'électrode qui est contenu à l'intérieur du compartiment de batterie. Le corps d'étanchéité d'ouverture comporte : une plaque métallique qui comprend une partie annulaire à laquelle un fil d'électrode est électriquement connecté, et une partie de déconnexion qui est séparée de la partie annulaire lorsque la pression interne du compartiment de batterie dépasse un seuil prédéterminé ; un corps de soupape qui est disposé davantage vers l'extérieur du compartiment de batterie que la plaque métallique ; et une plaque isolante qui est disposée entre la plaque métallique et le corps de soupape et isole des parties autres qu'une partie de liaison de la plaque métallique et du corps de soupape. La plaque isolante ou le joint d'étanchéité comporte une partie de déformation élastique qui se déforme dans la direction du corps de soupape lorsque la partie de déconnexion de la plaque métallique est séparée de la partie annulaire
(JA)
本開示は、弁体と金属板の電気的導通が遮断された後、再導通が発生する可能性を低減することを目的とする。実施形態の一例である密閉電池は、有底筒状の外装缶、及び外装缶の開口部を塞ぐ封口体を含む電池ケースと、外装缶と封口体の間に配置されたガスケットと、電池ケース内に収容された電極体とを備える。封口体は、電極リードが電気的に接続される環状部、及び電池ケースの内圧が所定の閾値を超えたときに環状部から切り離される切離部を含む金属板と、金属板よりも電池ケースの外側に配置される弁体と、金属板と弁体の間に配置され、金属板と弁体の接続部分以外を絶縁する絶縁板とを有する。絶縁板又はガスケットには、金属板の切離部が環状部から切り離されるときに弁体の方向に変形する弾性変形部が設けられている。
Also published as
JP2020562981
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