Lithium secondary battery having PTC powder and manufacturing method thereof
    79.
    发明申请
    Lithium secondary battery having PTC powder and manufacturing method thereof 审中-公开
    具有PTC粉末的锂二次电池及其制造方法

    公开(公告)号:US20050079422A1

    公开(公告)日:2005-04-14

    申请号:US10958018

    申请日:2004-10-04

    Abstract: Disclosed is a lithium secondary battery with high stability and excellent performance, and its manufacturing method. The lithium secondary battery includes a positive electrode including a positive electrode active material, a conductive material and a binding material and a negative electrode including a negative electrode active material and a binding material, and PTC powder is contained in at least one of the positive electrode and the negative electrode. If the battery is overheated due to overcharge, the PTC powder contained in the positive electrode and/or the negative electrode abruptly increases electric resistance to break electric current, thereby preventing further increase of temperature and resultantly preventing fire or explosion. In addition, the conductive material is contained separately from the PTC powder, performance of the battery is not deteriorated in the normal operation.

    Abstract translation: 公开了具有高稳定性和优异性能的锂二次电池及其制造方法。 锂二次电池包括正极,包括正极活性物质,导电材料和粘合材料,负极包括负极活性物质和粘结材料,PTC粉末包含在至少一个正极 和负极。 如果由于过充电导致电池过热,则包含在正极和/或负极中的PTC粉末突然增加电阻以断开电流,从而防止温度的进一步升高,从而防止火灾或爆炸。 此外,导电材料与PTC粉末分开地包含,在正常操作中电池的性能不会劣化。

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