FUEL BATTERY SINGLE CELL AND FUEL CELL STACK

• Main Authors: IDA ATSUMI, ITO MASAYUKI, ARAKI YASUSHI, KAJIWARA TAKASHI, SHIBATA KAZUNORI
• Format: Patent
• Language: English; Japanese
• Published: 08.09.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To surly seal a fuel battery single cell with a separator.SOLUTION: First and second separators of a fuel battery single cell 1 include: first and second passage forming regions; and first and second projection parts 10a and 10c formed to a peripheral part so as to project outward in a thickness direction S of the fuel battery single cell while surrounding the regions. The first projection part can be elastically deformed in the thickness direction, and the second projection part includes: a pair of standing parts 17 standing from the peripheral part; and a contacting part 16 expanding between the standing parts. A plurality of fuel battery single cells are laminated so that one first separator and the other second separator of adjacent two fuel battery single cells are faced, and the fuel cell stack is formed. A fluid channel is formed between the first and second separators by the first and second channel forming regions, the first projection part and the contact part are contacted, and a seal part 9 surrounding the fluid channel is formed. A reinforcement member 8 is attached to an outer surface or an inner surface of the contact part.SELECTED DRAWING: Figure 2 【課題】燃料電池単セルのセパレータでのシールをより確実に行う。【解決手段】燃料電池単セル１の第１、第２のセパレータがそれぞれ第１、第２の通路形成領域と、各領域を取り囲みつつ燃料電池単セルの厚さ方向Ｓ外向きに突出するように周縁部分に形成された第１、第２の突出部１０ａ、１０ｃとを有し、第１の突出部は厚さ方向に弾性変形可能で、第２の突出部は周縁部分から起立する一対の起立部１７と起立部同士間に拡がる当接部１６とを含む。隣接する２つの燃料電池単セルの一方の第１のセパレータと他方の第２のセパレータとが対面するように複数の前記燃料電池単セルを積層して燃料電池スタックが形成され、第１、第２の通路形成領域により第１、第２のセパレータ間に流体通路が形成され、第１の突出部と当接部とが当接して、流体通路を取り囲むシール部９が形成される。当接部の外面又は内面には補強部材８が取り付けられる。【選択図】図２