Patent ID: 8852785
Filing Date: 2014-10-07
Classification: H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. A bipolar secondary battery, comprising: a battery element, the battery element comprising: first and second bipolar electrodes, each of the first and second bipolar electrodes having a collector disposed with a conductive resin layer, a positive electrode active material layer formed on one side of the collector and a negative electrode active material layer formed on the other side of the collector, the conductive resin layer containing a first resin as a base material; and a separator arranged between the first and second bipolar electrodes and retaining therein an electrolyte material to form an electrolyte layer, the separator containing a second resin as a base material; the positive electrode active material layer of the first bipolar electrode, the electrolyte layer and the negative electrode active material layer of the second bipolar electrode constituting a unit cell, wherein a melting point of the first resin is lower than or equal to a melting point of the second resin; and wherein outer peripheries of the collectors of the first and second bipolar electrodes and an outer periphery of the separator are fused together to thereby seal an outer peripheral portion of the unit cell.