BATTERY MODULE, SECONDARY BATTERY AND CAP ASSEMBLY THEREOF
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United States of America Patent
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N/A
Issued Date -
Oct 29, 2020
app pub date -
Dec 30, 2019
filing date -
Apr 26, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
The present disclosure provides a battery module, a secondary battery and a cap assembly thereof. The cap assembly includes a cap plate which is provided with a terminal hole and an electrode terminal provided to the cap plate and covering the terminal hole; the electrode terminal includes an outer surface; the electrode terminal includes a positioning hole which is recessed with respect to the outer surface and includes a first portion and a second portion, the second portion is positioned to a side of the first portion away from the outer surface; a section of the first portion parallel to a central axis of the positioning hole is trapezoidal; a size of the first portion gradually decreases in a direction of the first portion close to the second portion, and a minimum size of the first portion is greater than or equal to a size of the second portion.
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