METHOD OF PRODUCING THIN BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a method of producing a thin battery, using a non-aqueous electrolyte containing a non-aqueous solvent of high boiling point (>=200 deg.C) capable of uniformly impregnating non-aqueous electrolyte in a production line into a group of electrodes in an exterior film material. SOLUTION: The method of producing a thin battery comprises the process of storing the group of electrodes consisting of positive and negative electrodes wound or laminated with separators therebetween in the exterior film material consisting of plastic laminated films intervened with a gas barrier film laid in the middle and opening the exterior film material at its one end; the process of filling the non-aqueous electrolyte containing the non-aqueous solvent of a high boiling point system in the exterior film material through its opening portion under the atmospheric pressure; and the process of impregnating the non-aqueous electrolyte into the group of electrodes in the exterior film material under a reduced pressure.