SECONDARY BATTERY END CAP ASSEMBLY
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United States of America Patent
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Issued Date -
Apr 28, 2011
app pub date -
Oct 28, 2009
filing date -
Oct 28, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A secondary battery end cap assembly is extruded integrally, is provided on a cap plate and corresponds to a first perforation and a second perforation of the cap plate. The first perforation corresponds to a gas seal part of the end cap assembly and a side of the gas seal part is extended with a safety valve corresponding to the second perforation to release gas pressure, preventing the battery from being overly recharged that an interior of the battery is too hot and pressure increases, allowing the battery to explode to cause danger. The safety valve is made by a non-metallic material. Hence, a secondary battery end cap assembly is extruded integrally to effectively reduce manufacturing time and improve production efficiency. Furthermore, as the safety valve is penetrated and embedded by extruding a non-metallic material, gas tightness is enhanced without being unriveted and welding problems.
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