HERMETICALLY SEALED BATTERY
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United States of America Patent
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Issued Date -
Aug 24, 2023
app pub date -
Jul 16, 2021
filing date -
Aug 6, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A sealed battery includes a battery case with a bottomed cylindrical shape having an opening; an electrode body housed in the battery case; an electrolyte solution; and a sealing member that closes the opening of the battery case. The sealing member is formed by stacking a terminal cap, a bottom plate electrically connecting the terminal cap and an electrode of one polarity of the electrode body, and a valve body interposed between the terminal cap and the bottom plate. The valve body has a surface covered with a resin material, and an end surface that is an outer edge of the valve body is covered with a protective layer containing a compound A having corrosion resistance to the electrolyte solution.
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