Patent ID: 6383234
Filing Date: 2002-05-07
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
A method for manufacturing a prismatic lithium secondary battery having an electrode assembly with a separation film between each pair of a positive electrode plate and a negative electrode plate, the method comprising:preparing a plurality of generally rectangular separation films, each separation film having a first width between opposite longitudinal edges of the separation film, and generally rectangular positive and negative plates having a second width narrower than the first of the separation films; alternately stacking the separation films and the positive and negative plates, so that each positive and negative plate is interposed between two of the separation films, to form a stack; hermetically sealing the longitudinal edges of all of the separation films in the stack by heating along a longitudinal direction of the stack to form an electrode assembly; and immersing the electrode assembly in an electrolyte solution and putting the electrode assembly into a case and hermetically sealing the case.