Invention Grant
US08455123B2 Safety switch using heat shrinkage tube and secondary battery including the same
有权
使用热收缩管和二次电池的安全开关包括相同的
- Patent Title: Safety switch using heat shrinkage tube and secondary battery including the same
- Patent Title (中): 使用热收缩管和二次电池的安全开关包括相同的
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Application No.: US12309505Application Date: 2007-07-14
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Publication No.: US08455123B2Publication Date: 2013-06-04
- Inventor: Ji Heon Ryu , Jeong Hee Choi , Youngjoon Shin
- Applicant: Ji Heon Ryu , Jeong Hee Choi , Youngjoon Shin
- Applicant Address: KR
- Assignee: LG Chem, Ltd.
- Current Assignee: LG Chem, Ltd.
- Current Assignee Address: KR
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: KR10-2006-0066647 20060718
- International Application: PCT/KR2007/003410 WO 20070714
- International Announcement: WO2008/010654 WO 20080124
- Main IPC: H01M10/50
- IPC: H01M10/50

Abstract:
Disclosed herein is a safety switch including a tube that is capable of shrinking when exposed to temperatures in excess of a predetermined temperature level (“heat shrinkage tube”), wherein the length of the heat shrinkage tube is changeable to control current conduction, one end of the heat shrinkage tube is fixed, and the other end of the heat shrinkage tube is connected to an electric wire connection part, such that current conduction or current interruption is accomplished by the change in length of the heat shrinkage tube when the heat shrinkage tube is varied due to heat. When a battery or a battery pack is exposed to an abnormal environment, with the result that the temperature of the battery or the battery pack exceeds a predetermined temperature level, the heat shrinkage tube of the safety switch shrinks to directly interrupt external charge current, thereby preventing the further charge of the battery or the battery pack. Furthermore, internal energy accumulated in the battery cell is forcibly consumed, thereby fundamentally preventing the progress of the abnormal operation of the battery or the battery pack. Consequently, the safety of the battery is secured.
Public/Granted literature
- US20100047674A1 Safety Switch Using Heat Shrinkage Tube and Secondary Battery Including The Same Public/Granted day:2010-02-25
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