US 7,547,489 B2
Electrochemical device
Ken Nishimura, Moriguchi (Japan); Naoto Arai, Ikoma (Japan); Toru Oshima, Moriguchi (Japan); Fumio Daio, Osaka (Japan); Munehisa Ikoma, Shiki-gun (Japan); and Hideo Kaiya, Chigasaki (Japan)
Assigned to Panasonic Corporation, Osaka (Japan)
Appl. No. 10/540,862
PCT Filed Dec. 09, 2003, PCT No. PCT/JP03/15757
§ 371(c)(1), (2), (4) Date Jun. 27, 2005,
PCT Pub. No. WO2004/062003, PCT Pub. Date Jul. 22, 2004.
Claims priority of application No. 2002-380939 (JP), filed on Dec. 27, 2002; and application No. 2003-024988 (JP), filed on Jan. 31, 2003.
Prior Publication US 2006/0099493 A1, May 11, 2006
Int. Cl. H01M 10/50 (2006.01)
U.S. Cl. 429—122  [429/62; 429/234; 429/94] 13 Claims
OG exemplary drawing
 
1. An electrochemical device having an electrode plate assembly that comprises: (a) at least one first electrode; (b) at least one second electrode; and (c) a separator interposed between the first electrode and the second electrode,
wherein said electrode plate assembly includes a PTC device,
said first electrode (a) comprises a first current collector sheet having a conductive area and an insulating area and at least one first electrode mixture layer carried thereon,
said second electrode (b) comprises a second current collector sheet having a conductive area and an insulating area and at least one second electrode mixture layer carried thereon,
said electrode plate assembly is a layered-type electrode plate assembly obtained by layering said first electrode, said second electrode and said separator, and
the conductive area of said first current collector sheet is connected to a first terminal on a first side face of said layered-type electrode plate assembly, the conductive area of said second current collector sheet is connected to a second terminal on a second side face of said layered-type electrode plate assembly, the insulating area of said first current collector sheet is positioned on said second side face, and the insulating area of said second current collector sheet is positioned on said first side face,
wherein said insulating area of said first current collector protrudes into the second terminal, and said insulating area of said second current collector protrudes into the first terminal.