Lithium-ion battery and deformable safety valve as overcharge protection device thereof
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United States of America Patent
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May 17, 2016
Grant Date -
Oct 9, 2014
app pub date -
Apr 2, 2014
filing date -
Apr 9, 2013
priority date (Note) -
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Abstract
The present disclosure provides a lithium-ion battery and a deformable safety valve as an overcharge protection device thereof. The deformable safety valve as the overcharge protection device of the lithium-ion battery comprises a short-circuit conductive plate and a deformable plate made from aluminum, a facing surface of the deformable plate being coated with a metal layer to reduce contact resistance between the deformable plate and the short-circuit conductive plate. The lithium-ion battery comprises a first electrode post; a cap plate electrically connected to the first electrode post; an electrolyte-injection hole provided in the cap plate; a vent provided in the cap plate; a deformable safety valve provided to the cap plate; and a second electrode post assembled to the cap plate in an insulating manner; wherein the deformable safety valve is the above deformable safety valve as the overcharge protection device of the lithium-ion battery.
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