Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 19, 2010
Patent Application Number
11234831
Date Filed
September 23, 2005
Patent Primary Examiner
Patent abstract
A cap assembly and a lithium secondary battery with the same, in which a shape of a safety vent of a cap plate is such that the safety vent is easily fracturable under low pressure even if the safety vent has a relatively large thickness, thereby improving reliability and safety of the lithium secondary battery. The cap assembly cap plate has a safety vent including at least one first directional weak component and at least one second directional weak component which is connected to the first directional weak component.
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