Lithium ion battery is with two -sided bonding diaphragm and lithium ion battery

The utility model provides a lithium ion battery is with two -sided bonding diaphragm and lithium ion battery, lithium ion battery is with two -sided bonding diaphragm including the base film, the oneside coating of base film has river system PVDF adhesive layer, the another side coating of base film has polyacrylate adhesive layer. Adopt the technical scheme of the utility model, the short circuit rate of rolling up the core that has reduced improves the product percent of pass, and electric core hardness obviously promotes, and positive flatulence ratio reduces greatly, the service life oflithium ion battery's big multiplying power discharge performance, cyclicity ability, is prolonged it is longer, more reliable. 本实用新型提供了种锂离子电池用双面粘接隔膜及锂离子电池，所述锂离子电池用双面粘结隔膜包括基膜，所述基膜的面涂覆有水系PVDF胶粘剂层，所述基膜的另面涂覆有聚丙烯酸酯胶粘剂层。采用本实用新型的技术方案，降低了卷芯的短路率，提高产品合格率；而且电芯硬度明显提升，正胀气比率大大减小；提高了锂离子电池的大倍率放电性能、循环性能，使用寿命更长，更加可靠。