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CN105122502A 用于锂离子二次电池的多层混杂型电池隔板及其制造方法 无效 - 驳回 复审申请

用于锂离子二次电池的多层混杂型电池隔板及其制造方法
摘要：
一种用于锂二次电池的多层电池隔板，包括第一层干法的膜，其结合于第二层湿法的膜。第一层可由聚丙烯系树脂制成。第二层可由聚乙烯系树脂制成。隔板可具有不止两个层。隔板可具有约1.5-3.0范围内的TD/MD拉伸强度之比。隔板可具有约35.0微米或更小的厚度。隔板可具有大于约630gf的刺穿强度。隔板可具有至少约2000V的介电击穿。
摘要（英）：

A multi-layered battery separator for a lithium secondary battery includes a first layer of a dry processed membrane bonded to a second layer of a wet processed membrane. The first layer may be made of a polypropylene based resin. The second layer may be made of a polyethylene based resin. The separator may have more than two layers. The separator may have a ratio of TD/MD tensile strength in the range of about 1.5-3.0. The separator may have a thickness of about 35.0 microns or less. The separator may have a puncture strength of greater than about 630 gf. The separator may have a dielectric breakdown of at least about 2000V.

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