Secondary battery, battery pack, electronic device, electric tool, electric aircraft, and electric vehicle
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 18, 2025
Grant Date -
Apr 21, 2022
app pub date -
Dec 30, 2021
filing date -
Dec 30, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a secondary battery where a positive electrode includes a first covered part covered with a positive electrode active material layer and a positive electrode active material non-covered part on a positive electrode foil, and a negative electrode includes a second covered part covered with a negative electrode active material layer and a negative electrode active material non-covered part on a negative electrode foil, one or both of the positive electrode active material non-covered part and the negative electrode active material non-covered part have a surface formed by bending toward the central axis of the wound structure and overlapping each other, and the surface is joined to the positive electrode current-collecting plate or the negative electrode current-collecting plate.
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