发明名称 |
METHOD FOR EVALUATING BATTERY SAFETY UNDER INTERNAL SHORT-CIRCUIT CONDITION |
摘要 |
<p>The invention provides a method for evaluating the safety of a battery under an internal short-circuit condition. The battery includes: an electrode group including a positive electrode, a negative electrode, and an insulating layer for electrically insulating the electrodes, which are wound or laminated; an electrolyte; a housing for housing the electrode group and the electrolyte; and a current-collecting terminal for electrically connecting the electrode group and the housing. The method of the invention includes: placing a foreign object at a location inside the electrode group of the battery where the positive electrode and the negative electrode face each other; and pressing the location by the pressure applied by a pressing tool to locally crush the insulating layer between the positive and negative electrodes, thereby causing an internal short-circuit. The contact area of the electrode group and the pressing tool during the pressing is larger than the area of a rectangle circumscribed about the foreign object. A short-circuit test is conducted at a given location inside the battery to comprehensively evaluate the safety of the battery under an internal short-circuit condition.</p> |
申请公布号 |
EP2157653(B1) |
申请公布日期 |
2014.05.07 |
申请号 |
EP20080738623 |
申请日期 |
2008.04.22 |
申请人 |
PANASONIC CORPORATION;SONY CORPORATION;SANYO ELECTRIC CO., LTD. |
发明人 |
KASAMATSU, SHINJI;SHIMADA, MIKINARI;NAGAMINE, MASAYUKI;FUKASE, YASUO;TAKAHASHI, MASATOSHI;IWANAGA, MASATO |
分类号 |
H01M10/04;H01M6/02;H01M6/50;H01M10/0525;H01M10/0587;H01M10/48 |
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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