Polyalcohol microporous barrier for high ratio polyalcohol lithium ion power cell

The present invention relates to a polymer microporous membrane for high-rate polymer lithium-ion power battery. The polymer microporous membrane is mainly used in gel polymer lithium-ion power battery. The power battery can provide powered power supply for equipment of high energy consumption and large current discharge, such as an electric vehicle, an electric motorcycle, uninterruptible power supply and so on. The microporous membrane is made of polymer material, inorganic filler, plasticizer and organic solvent. The porosity rate is between 20 percent and 70 percent. After treatment, the microporous membrane can be transformed into electrolyte membrane; the high-rate gel polymer lithium-ion power battery can be made with a square-layered battery structure. The power battery has excellent high-rate charge and discharge performances and security performances.