The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2014
Filed:
Jul. 20, 2006
Sung Kyun Chang, Daejeon, KR;
Joon Hwan Lee, Daejeon, KR;
Jae Hyun Lee, Daejeon, KR;
Soo Hyun Ha, Busan, KR;
Jeong Ju Cho, Daejeon, KR;
Sang Hoon Choy, Daejeon, KR;
Sung Kyun Chang, Daejeon, KR;
Joon Hwan Lee, Daejeon, KR;
Jae Hyun Lee, Daejeon, KR;
Soo Hyun Ha, Busan, KR;
Jeong Ju Cho, Daejeon, KR;
Sang Hoon Choy, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention is an apparatus for protecting a secondary battery, in which, when the secondary battery such as a lithium-ion secondary battery is exposed to high temperature exceeding a working range due to a change in external environment, external impacts, and so on, or heated due to spontaneous generation of heat caused by internal defects, the secondary battery is discharged. The apparatus includes a thyristor or transistor having an anode and a cathode connected both terminals of the secondary battery respectively, and shorting both terminals of the secondary battery when gate current is supplied, and a temperature sensor detecting temperature of the secondary battery and supplying the gate current to the thyristor or transistor when the detected temperature is higher than predetermined temperature.