ELECTROCHEMICAL DEVICE HAVING VARIOUS TYPES OF SEPARATORS Russian patent published in 2012 - IPC H01M2/14 H01M10/52 

FIELD: electricity.

SUBSTANCE: electrochemical device comprises multiple separate cells, every of which has the first separator and a cathode, and an anode arranged at both sides of the first separator, and a continuous single second separator placed between neighbouring separate cells joined to each other into a multiple-layer structure and arranged to enclose each cell. The first separator comprises a heat-resistant porous substrate with a melting temperature of 200°C or higher, and the first layer of a porous coating formed on at least one surface of a heat-resistant porous substrate and made from a mixture of multiple inorganic particles and a binding polymer. The second separator comprises a polyolefin porous substrate and the second layer of a porous coating formed on at least one surface of a polyolefin porous substrate and made from a mixture of multiple inorganic particles and a binding polymer.

EFFECT: thermal stability, prevention of a short circuit, an explosion, ignition of an electrochemical device.

16 cl, 5 dwg, 2 tbl, 3 ex