Nonaqueous electrolyte secondary battery and battery module

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12266766
APP PUB NO 20240274888A1
SERIAL NO

18615291

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Importance

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Abstract

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A nonaqueous electrolyte secondary battery includes an electrode body and a nonaqueous electrolyte solution. An electrolyte solution passage is a flow passage through which the nonaqueous electrolyte solution flows between the inside and the outside of the electrode body. A region of a negative-electrode composite material layer in contact with the electrolyte solution passage is a damming portion and a region located on the center side relative to the damming portion is a liquid retaining portion. The damming portion contains a negative electrode active material of which an electrical potential relative to a positive electrode active material is high and a ratio of expansion or contraction due to an increase or decrease in SOC is high, when compared to a negative electrode active material contained in the liquid retaining portion. The electrolyte solution passage can be closed by the damming portion in a charge state where the damming portion expands.

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Patent Owner(s)

  • 501 TOYOTA JIDOSHA KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takebayashi, Yoshitomo Nisshin, JP 20 57
Yoshioka, Masahiro Toyota, JP 110 1664

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