Secondary battery including non-covered part having bent flat surface with groove passing through central axis and another groove not passing through central axis, battery pack, electronic device, electric tool, electric aircraft, and electric vehicle including the same
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 11, 2025
Grant Date -
May 12, 2022
app pub date -
Jan 20, 2022
filing date -
Jan 20, 2022
priority date (Note) -
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Abstract
Provided is a secondary battery including: an electrode wound body that has a positive electrode and a negative electrode stacked with a separator interposed therebetween and has a wound structure; and a positive electrode current collecting plate and a negative electrode current collecting plate, accommodated in an exterior can, where the 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 the 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.
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