Secondary battery, battery pack, electronic device, electric tool, electric aircraft, and electric vehicle
A secondary battery in which a positive electrode has, on a strip-shaped positive electrode foil, a covering portion covered with a positive electrode active material layer and a positive electrode active material non-covering portion, and a negative electrode has, on a strip-shaped negative electro...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | A secondary battery in which a positive electrode has, on a strip-shaped positive electrode foil, a covering portion covered with a positive electrode active material layer and a positive electrode active material non-covering portion, and a negative electrode has, on a strip-shaped negative electrode foil, a covering portion covered with a negative electrode active material layer and a negative electrode active material non-covering portion, the positive electrode active material uncovered portion is joined to the positive electrode collector plate on one side of the end face of the electrode winding body, and the negative electrode active material uncovered portion is joined to the negative electrode collector plate on the other side of the end face of the electrode winding body. Either or both of the positive electrode active material non-covering portion and the negative electrode active material non-covering portion have a flat surface formed by being bent toward the central axis of the wound structure a |
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