Patent ID: 8404002
Filing Date: 2013-03-26
Classification: H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. A method of manufacturing a bipolar battery stack comprising: Preparing a first bipolar electrode by attaching a positive electrode and a negative electrode on opposite sides of a collector; Overlaying a first permeable separator on the first bipolar electrode with an electrolyte interposed there between to form a first sub-assembly; Preparing a second bipolar electrode by attaching a positive electrode and a negative electrode on opposite sides of a collector; Overlaying a second permeable separator on the second bipolar electrode with an electrolyte interposed there between to form a second subassembly; Stacking the first subassembly and the second subassembly to form at least a part of the bipolar battery stack and; Exhausting a gas bubble through the first permeable separator, the gas bubble formed between the first bipolar electrode on which the electrolyte is applied and the first permeable separator and exhausting a gas bubble through the second permeable separator, the gas bubble formed between the second bipolar electrode on which the electrolyte is applied and the second permeable separator, wherein exhausting the gas bubble can be performed individually before stacking or together after stacking but during the manufacturing of the battery.