POWER STORAGE DEVICE AND METHOD OF MANUFACTURING THE POWER STORAGE DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Mar 21, 2024
filing date -
Mar 21, 2024
priority date (Note) -
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Abstract
A power storage device includes a current collecting terminal, a case member having a terminal insertion hole, and an insulating resin member connecting the current collecting terminal with a hole periphery and a hole surrounding portion of the terminal insertion hole. The current collecting terminal and the case member have seal portions that ensure airtightness in a case, at connecting portions connecting with the insulating resin member, and each of the seal portions is a roughened surface. The insulating resin member has a thermoplastic resin material including high molecular weight particles with a molecular weight of 10,000 or more and low molecular weight particles with a molecular weight of 500 to 5,000, and the low molecular weight particles are included 5 to 15% by weight in the thermoplastic resin material and are unevenly distributed closer to the roughened surface.
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