ELECTROLYTE POURING METHOD OF FLAT BATTERY

摘要

PURPOSE:To simply and surely pour electrolyte by immersing a flat battery having an electrolyte pouring hole under a reduced pressure in an organic electrolyte and pouring electrolyte by returning to atmospheric pressure into a battery from the electrolyte pouring hole. CONSTITUTION:A lithium metal 3 which serves as a negative active material is press-bonded on the inner surface of a negative current collector 1 also acting as a terminal and having an electrolyte pouring hole 2. The negative part is faced to a positive mix 5 mainly comprising MnO2 which is pressed on the inner surface of a positive current collector 7 also acting as a terminal with a separator 4 interposed between them. These peripheries are sealed with sealant 6 to form a flat battery 8. An organic electrolyte 10 prepared by dissolving LiClO4 in propylene carbonate is filled in a container 9, and a battery 8 is immersed under a reduced pressure in the electrolyte, then the pressure is returned to atmospheric pressure to pour the electrolyte 10 into the battery from the pouring hole 2. Therefore, the electrolyte is surely poured to all portions of the battery.