发明名称 |
ELECTRODE ASSEMBLY FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME |
摘要 |
Provided are an electrode assembly for a secondary battery and a lithium secondary battery including the same. The electrode assembly for a secondary battery includes: a positive electrode having a positive electrode coating portion formed on a positive electrode collector; a negative electrode having a negative electrode coating portion formed on a negative electrode collector; and a polyolefin-based separator interposed between the positive and negative electrodes, wherein a PTC (Positive Temperature Coefficient) material layer is formed on the top face of any one of the positive and negative electrode coating portions. Therefore, the PTC material layer plays a role of enabling active material to exhibit constant conductivity regardless of charge or discharge while the batteries are normally operated, and the PTC material layer increases safety properties of the batteries by changing the active material from conductor to nonconductor when temperatures inside the batteries are increased by short circuit or accidents. |
申请公布号 |
EP2610955(A4) |
申请公布日期 |
2014.08.20 |
申请号 |
EP20120804401 |
申请日期 |
2012.06.29 |
申请人 |
LG CHEM, LTD. |
发明人 |
KIM, BO HYUN;KIM, DAE IL;LEE, JOONG MIN |
分类号 |
H01M10/04;B60L11/18;H01M2/16;H01M4/36;H01M4/62;H01M10/052;H01M10/058 |
主分类号 |
H01M10/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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