Non-aqueous electrolyte secondary battery
Number of patents in Portfolio can not be more than 2000
United States of America
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Jul 9, 2024
Grant Date -
N/A
app pub date -
Sep 16, 2021
filing date -
Sep 16, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
According to the present invention, a non-aqueous electrolyte secondary battery includes an accommodation container including a positive electrode can, a gasket, and a negative electrode can, and a power generation element containing an electrolytic solution. The positive electrode can is formed in a bottomed-cylindrical shape having a bottom wall portion and an outer wall portion. The negative electrode can is formed in a topped-cylindrical shape having a top wall portion and an inner wall portion. A portion of the outer wall portion located on a top wall portion side is made as a crimping portion 12b curved with a curvature radius R gradually toward an inner wall portion side as it extends from a bottom wall portion side toward an opening end edge of the outer wall portion. A diameter D of the non-aqueous electrolyte secondary battery is set to 4.6 mm to 5.0 mm. A height H2 of the positive electrode can is set to be in a range of 74% to 79% of a height H1 of the non-aqueous electrolyte secondary battery. The curvature radius R of the crimping portion is set to be in a range of 0.7 mm to 1.1 mm.
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