Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jae Chul Um0
Date of Patent
April 6, 2010
Patent Application Number
11170783
Date Filed
June 28, 2005
Patent Primary Examiner
Patent abstract
A secondary battery comprising a heat-sensitive indicator on the outer surface of the battery is disclosed. The color of the heat-sensitive indicator changes according to battery temperature. The heat-sensitive indicator may comprise a sheath. When the internal temperature of the battery increases rapidly, the heat-sensitive indicator changes color to alert the user that the battery is abnormally hot.
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