Secondary battery and method of manufacturing the same

A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid which is fixed to the container and is closing the pourin...

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Bibliographic Details
Main Authors Toyota, Natsuki, Okada, Naotada, Sakai, Tetsuo, Kawada, Yoshitaka, Yahagi, Susumu
Format Patent
LanguageEnglish
Published 05.03.2019
Subjects
BASIC ELECTRIC ELEMENTS
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
ELECTRICITY
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid which is fixed to the container and is closing the pouring hole. The sealing lid has a welding mark existing in a ring shape with a depth through the sealing lid to a lid body of the container, and an inner circumferential side molten mark existing in a ring shape overlapping with the welding mark, on the inner circumferential side of the welding mark in the sealing lid, with a depth corresponding to the thickness of the sealing lid.
Bibliography:Application Number: US201213356392