LITHIUM BATTERY SEPARATOR HAVING A SHUTDOWN FUNCTION
    2.
    发明申请
    LITHIUM BATTERY SEPARATOR HAVING A SHUTDOWN FUNCTION 失效
    锂离子电池分离器具有关断功能

    公开(公告)号:US20090311418A1

    公开(公告)日:2009-12-17

    申请号:US12545900

    申请日:2009-08-24

    IPC分类号: B05D5/12

    摘要: Electrical separators for batteries, especially lithium batteries, having a shutdown mechanism. A process for their production. An electrical separator is used in batteries and other systems in which electrodes have to be separated from each other while maintaining ion conductivity. Safety is very important in lithium batteries, since in contrast to other types of battery (Pb, NiCd, NiMeH) the solvent for the electrolyte is not water but a combustible solvent. A separator for lithium cells must possess a shutdown mechanism while not being able to melt down. This is achieved by an electrical separator having a shutdown layer which comprises particles which melt at a desired temperature, close the pores of the separator, and so stop ion flow. Since the separator also comprises a porous inorganic (ceramic) layer on a carrier, the cells cannot melt down as a result of a completely melted separator.

    摘要翻译: 电池分离器,特别是锂电池,具有关机机构。 一个生产过程。 在电池和其他系统中使用电隔离器,其中电极必须彼此分离,同时保持离子传导性。 安全性在锂电池中非常重要,因为与其他类型的电池(Pb,NiCd,NiMeH)相反,电解质溶剂不是水而是可燃溶剂。 用于锂电池的隔板必须具有关闭机构,而不能熔化。 这通过具有关闭层的电隔离器来实现,该关闭层包括在期望温度下熔化的颗粒,闭合隔板的孔,并且因此停止离子流。 由于分离器还包含载体上的多孔无机(陶瓷)层,所以由于完全熔化的分离器,电池不能熔化。