Method for manufacturing nonaqueous electrolyte secondary battery

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11380940
APP PUB NO 20210194062A1
SERIAL NO

16755062

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Abstract

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A method for manufacturing a nonaqueous electrolyte secondary battery, when an electrode tab is provided at a longitudinal-direction end portion of an electrode located at a winding-start side of an electrode body, the method being capable of sufficiently reducing damage on a separator and the electrode in a process for manufacturing the electrode body. In a manufacturing step of one example of an embodiment, a negative electrode tab is bonded to a longitudinal-direction end portion of a negative electrode to be located at a winding-start side of an electrode body, the negative electrode tab is processed so that a width-direction central portion of the negative electrode tab at least bulges toward a winding-outer side of the electrode body, and while a gap is formed between the negative electrode tab and a winding core, a positive electrode, the negative electrode, and a separator are wound around the winding core.

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Patent Owner(s)

  • SANYO ELECTRIC CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kitagawa, Takanori Osaka, JP 8 17
Kusagawa, Koichi Osaka, JP 4 4
Ueda, Tomomichi Osaka, JP 14 75

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