Patent ID: 6106973
Filing Date: 2000-08-22
Classification: H01M,Y02P

Abstract:
A thin battery comprising:a sheathing comprising a laminated film configured to form an airtight sealed chamber;an electricity generating element disposed in said sealed chamber, said electricity generating element having a positive electrode, a negative electrode, an upper surface, and a lower surface,wherein said sheathing has a primary sealing portion formed by a first pair of opposite edge portions of said laminated film which are overlapped and adhered together over one of said upper and lower surfaces of said electricity generating element to form an overlapped laminated film,a first secondary sealing portion formed by adhering together opposing surfaces at a first end of said overlapped laminated film, anda second secondary sealing portion formed by adhering together opposing surfaces at a second end of said overlapped laminated film,wherein said first and second secondary sealing portions are disposed at opposite ends of said primary sealing portion and extend perpendicularly with respect to said primary sealing portion, and said first secondary sealing portion is located outwardly of the periphery of said electricity generating element, and said second secondary sealing portion is disposed over said primary sealing portion and over one of said upper and lower surfaces of said electricity generating element; andcollector terminals connected to said positive electrode and said negative electrode, respectively,said collector terminals extending from said electricity generating element outwardly of said sealed chamber, wherein said collector terminals are sealed in an airtight manner at said first secondary sealing portion.