POWER STORAGE CELL AND METHOD OF PRODUCING THE SAME
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United States of America
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Issued Date -
Dec 19, 2024
app pub date -
Apr 16, 2024
filing date -
Apr 16, 2024
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Abstract
A power storage cell comprises a cell case and a wound electrode assembly. The wound electrode assembly includes a first electrode, a separator, a second electrode, and a fixing member. In a winding direction of the wound electrode assembly, the first electrode has a first end portion. The second electrode has a second end portion. The separator has a third end portion. In the winding direction, the second end portion is positioned within a region spanning from the first end portion to the third end portion. The first end portion consists of the first foil. The second end portion consists of the second foil. The fixing member fixes the wound electrode assembly at the third end portion. The expression “0.9×T2≤Tf≤1.1×(T1+T2)” is satisfied. T1 represents a thickness of the first foil. T2 represents a thickness of the second foil. Tf represents a maximum thickness of the fixing member.
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