Patent ID: 7727658
Filing Date: 2010-06-01
Classification: B29C,B29K,H01M,Y02E

Abstract:
1. A fuel cell in which a plurality of electric cells including a membrane electrode assembly (MEA) having a catalytic layer and a diffusion layer on both surfaces of an electrolytic membrane is held between a first separator and a second separator are laminated, wherein the first separator has a metallic internal member and a thermoplastic laser transmitting resin layer provided at an outer peripheral portion of the metallic internal member, wherein the thermoplastic laser transmitting resin layer and the metallic internal member are made of different materials, the second separator has a metallic internal member and a thermoplastic laser absorptive resin layer provided at an outer peripheral portion of the metallic internal member, wherein the thermoplastic laser absorptive resin layer is made of a material different than the metallic internal member and the thermoplastic laser transmitting resin layer of the first separator, the MEA physically contacts and is sandwiched between a portion of the thermoplastic laser transmitting resin layer of the first separator and a portion of the thermoplastic laser absorptive layer of the second separator, the thermoplastic laser transmitting resin layer of the first separator is adjacent to the thermoplastic laser absorptive resin layer of the second separator, the thermoplastic laser transmitting resin layer of the first separator adheres to the thermoplastic laser absorptive resin layer of the second separator to laminate the first and second separators together, wherein a laser emitted portion forms a circular body in plan view of the adjacent separators, and the MEA is positioned in the circular body.