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1. EP3544089 - POUCH-TYPE SECONDARY BATTERY

Office European Patent Office
Application Number 18854422
Application Date 09.08.2018
Publication Number 3544089
Publication Date 25.09.2019
Publication Kind A4
IPC
H01M 2/34
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
H01M 2/02
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
H01M 2/08
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
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 10/0525
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/48
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
48Accumulators combined with arrangements for measuring, testing or indicating condition, e.g. level or density of the electrolyte
CPC
H01M 2/0207
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
0202for small-sized cells or batteries, e.g. miniature battery or power cells, batteries or cells for portable equipment
0207Flat-shaped cells or batteries of flat cells
H01M 2/021
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
0202for small-sized cells or batteries, e.g. miniature battery or power cells, batteries or cells for portable equipment
0207Flat-shaped cells or batteries of flat cells
021with both terminals passing through the case or cover
H01M 2/0212
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
0202for small-sized cells or batteries, e.g. miniature battery or power cells, batteries or cells for portable equipment
0207Flat-shaped cells or batteries of flat cells
0212with plate-like or sheet-like terminals
H01M 2/0275
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
0257characterised by the material
0275of flexible envelopes or bags around open cell elements
H01M 2/08
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 2/345
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 ; , e.g. complete cut of current
345in response to pressure
Applicants LG CHEMICAL LTD
Inventors PARK JONG PIL
CHOI SEUNG DON
Designated States
Title
(DE) BEUTELFÖRMIGE SEKUNDÄRBATTERIE
(EN) POUCH-TYPE SECONDARY BATTERY
(FR) BATTERIE SECONDAIRE DE TYPE POCHE
Abstract
(EN)
To solve the above problem, a pouch type secondary battery according to an embodiment of the present invention includes: an electrode assembly in which an electrode including a positive electrode and a negative electrode and a separator are laminated; a battery case having a pouch shape to accommodate the electrode assembly; an electrode tab connected to the electrode and protruding from one side of the electrode; a first electrode lead having one end connected to the electrode tab; a second electrode lead having one end connected to the other end of the first electrode lead and the other end protruding to the outside of the battery case; and a connection part bonding the first electrode lead to the second electrode lead to connect the first and second electrode leads to each other, wherein, in at least one of the first and second electrode leads, at least one notch is provided on a boding surface on which the first and second electrode leads are bonded to each other through the connection part.

(FR)
Une batterie secondaire de type poche selon un mode de réalisation de la présente invention pour résoudre le problème décrit ci-dessus comprend : un ensemble d'électrodes dans lequel un séparateur et une électrode ayant une électrode positive et une électrode négative sont empilés ; un bac de batterie de type poche qui loge l'ensemble d'électrodes ; une languette d'électrode qui est reliée à l'électrode et fait saillie à partir d'un côté de l'ensemble d'électrodes ; un premier fil d'électrode ayant une extrémité reliée à la languette d'électrode ; un second fil d'électrode qui a une extrémité reliée à l'autre extrémité du premier fil d'électrode et l'autre extrémité faisant saillie vers l'extérieur du bac de batterie ; et une partie de connexion pour faire adhérer et connecter le premier fil d'électrode et le second fil d'électrode l'un à l'autre, sur au moins un fil parmi les premier et second fils d’électrode, au moins une encoche est formée dans les surfaces adhérentes collées l'une à l'autre par l'intermédiaire de la partie de connexion.