| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for performing gas evacuation well while suppressing the boiling of an electrolyte in a degassing step.SOLUTION: A method for manufacturing a film-packaged battery by putting, in an outer sheath, a power-generating element arranged by laminating a positive electrode plate and a negative electrode plate through a separator together with an electrolyte, and sealing the outer sheath with terminals lead out comprises the step of degassing the film-packaged battery, in which an opening for communicating the inside of the outer sheath to the outside is formed, and gas inside the outer sheath is evacuated through the opening. In the degassing step, a pressure of an environment in which the outer sheath is provided is kept within a predetermined pressure range (Pr) of a low level of vacuum for a predetermined period (Th) or longer time.</p> |
