IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0129314
(2000-11-08)
|
우선권정보 |
JP-0316721 (1999-11-08) |
국제출원번호 |
PCT/JP00/07866
(2002-05-03)
|
§371/§102 date |
20020503
(20020503)
|
국제공개번호 |
WO01/35477
(2001-05-17)
|
발명자
/ 주소 |
- Hatoh, Kazuhito
- Niikura, Junji
- Ohara, Hideo
- Kanbara, Teruhisa
|
출원인 / 주소 |
- Matsushita Electric Industrial Co., Ltd.
|
대리인 / 주소 |
Akin Gump Strauss Hauer &
|
인용정보 |
피인용 횟수 :
19 인용 특허 :
5 |
초록
▼
A polymer electrolyte fuel cell comprising a hydrogen-ion conductive polymer electrolyte membrane, an anode and a cathode sandwiching the hydrogen-ion conductive polymer electrolyte membrane, an anode-side conductive separator plate having gas flow channels for supplying a fuel gas to the anode, and
A polymer electrolyte fuel cell comprising a hydrogen-ion conductive polymer electrolyte membrane, an anode and a cathode sandwiching the hydrogen-ion conductive polymer electrolyte membrane, an anode-side conductive separator plate having gas flow channels for supplying a fuel gas to the anode, and a cathode-side conductive separator plate having gas flow channels for supplying an oxidant gas to the cathode, wherein the anode-side and cathode-side conductive separator plates have a substantially rectangular part in contact with the anode or cathode in which the length of a longer side is equal to or more than twice the length of a shorter side, and the oxidant gas flow channels have a linear part formed along the longer side of the rectangular part.
대표청구항
▼
1. A polymer electrolyte fuel cell comprising a hydrogen-ion conductive polymer electrolyte membrane, an anode and a cathode sandwiching said hydrogen-ion conductive polymer electrolyte membrane, an anode-side conductive separator plate having gas flow channels for supplying a fuel gas to said anode
1. A polymer electrolyte fuel cell comprising a hydrogen-ion conductive polymer electrolyte membrane, an anode and a cathode sandwiching said hydrogen-ion conductive polymer electrolyte membrane, an anode-side conductive separator plate having gas flow channels for supplying a fuel gas to said anode, and a cathode-side conductive separator plate having gas flow channels for supplying an oxidant gas to said cathode,wherein said anode-side and cathode-side conductive separator plates have a substantially rectangular part in contact with the anode or cathode in which the length of a longer side is not less than twice and not more than six times the length of a shorter side, an oxidant gas inlet manifold is formed in the vicinity of one of the shorter sides of said rectangular part and an oxidant gas outlet manifold is formed in the vicinity of the other of the shorter sides, each of said manifolds being formed as a through-hole of the separator plate, the oxidant gas flow channels of said cathode-side conductive separator plate have a linear part formed along said longer side, and each of said inlet manifold and outlet manifold has an opening having a width which is at least approximately equal to the sum of the widths of said gas flow channels communicating with said manifold, wherein said cathode-side conductive separator plate has, on the backside, cooling water flow channels having a linear part along the longer side of said rectangular part, and the flow direction of the oxidant gas in the linear part of said gas flow channels is substantially the same as the flow direction of the cooling water in the linear part of said cooling water flow channels. 2. The polymer electrolyte fuel cell in accordance with claim 1, wherein said cathode-side conductive separator plate has a plurality of oxidant gas flow channels which are substantially linear and continuous along the longer side from one of the shorter sides toward the other of the shorter sides.3. The polymer electrolyte fuel cell in accordance with claim 1, wherein said oxidant gas flow channels have a serpentine structure composed of a plurality of linear, parallel gas flow channels along the longer side of said cathode-side conductive separator plate and at least one turn where the gas flow channels make a turn, and said turn is located in the vicinity of one of the shorter sides of said cathode-side conductive separator plate.4. The polymer electrolyte fuel cell in accordance with claim 3, wherein said fuel gas flow channels have a serpentine structure composed of a plurality of linear, parallel gas flow channels along the longer side of said anode-side conductive separator plate and at least one turn where the gas flow channels make a turn, and said turn is located in the vicinity of one of the shorter sides of said anode-side conductive separator plate.5. The polymer electrolyte fuel cell in accordance with claim 4, wherein said oxidant gas flow channels have two turns, and said fuel gas flow channels have two or four turns.6. The polymer electrolyte fuel cell in accordance with claim 3, wherein grooves constituting said gas flow channels or cooling water flow channels run across a central part on respective sides of the separator plate, and the position of the center line of a rib between the grooves on one side of said separator plate is in substantial alignment with the position of the center line of a rib between the grooves on the other side except at portions of the ribs which are unavoidably different due to different positions of the grooves in the vicinity of the respective manifolds.7. A polymer electrolyte fuel cell comprising a hydrogen-ion conductive polymer electrolyte membrane, an anode and a cathode sandwiching said hydrogen-ion conductive polymer electrolyte membrane, an anode-side conductive separator plate having gas flow channels for supplying a fuel gas to said anode, and a cathode-side conductive separator plate having gas flow channels for supplying an oxidant gas to said cathode,wherein said anode-side and cathode-side conductive separator plates have a substantially rectangular part in contact with the anode or cathode in which the length of a longer side is not less than twice and not more than six times the length of a shorter side, an oxidant gas inlet manifold is formed in the vicinity of one of the shorter sides of said rectangular part and an oxidant gas outlet manifold is formed in the vicinity of the other of the shorter sides, each of said manifolds being formed as a through-hole of the separator plate, the oxidant gas flow channels of said cathode-side conductive separator plate has a linear part formed along said longer side, and each of said inlet manifold and outlet manifold has an opening having a width which is at least approximately equal to the sum of the widths of said gas flow channels communicating with said manifold, wherein in the anode-side and cathode-side conductive separator plates, grooves constituting the fuel gas and oxidant gas flow channels have a width of 1.5 to 2.5 mm and a depth of 0.4 to 1 mm, and a rib between the grooves has a width of 0.5 to 1.5 mm. 8. The polymer electrolyte fuel cell in accordance with claim 7, wherein said oxidant gas flow channels have a serpentine structure composed of a plurality of linear, parallel gas flow channels along the longer side of said cathode-side conductive separator plate and at least one turn where the gas flow channels make a turn, and said turn is located in the vicinity of one of the shorter sides of said cathode-side conductive separator plate.9. The polymer electrolyte fuel cell in accordance with claim 8, wherein said fuel gas flow channels have a serpentine structure composed of a plurality of linear, parallel gas flow channels along the longer side of said anode-side conductive separator plate and at least one turn where the gas flow channels make a turn, and said turn is located in the vicinity of one of the shorter sides of said anode-side conductive separator plate.10. The polymer electrolyte fuel cell in accordance with claim 9, wherein said oxidant gas flow channels have two turns, and said fuel gas flow channels have two or four turns.11. The polymer electrolyte fuel cell in accordance with claim 7, wherein said cathode-side conductive separator plate has, on the backside, cooling water flow channels having a linear part along the longer side of said rectangular part, and the flow direction of the oxidant gas in the linear part of said gas flow channels is substantially the same as the flow direction of the cooling water in the linear part of said cooling water flow channels.12. The polymer electrolyte fuel cell in accordance with claim 11, wherein grooves constituting said gas flow channels or cooling water flow channels run across a central part on respective sides of the separator plate, and the position of the center line of a rib between the grooves on one side of said separator plate is in substantial alignment with the position of the center line of a rib between the grooves on the other side except at portions of the ribs which are unavoidably different due to different positions of the grooves in the vicinity of the respective manifolds.13. The polymer electrolyte fuel cell in accordance with claim 7, wherein said cathode-side conductive separator plate has a plurality of oxidant gas flow channels which are substantially linear and continuous along the longer side from one of the shorter sides toward the other of the shorter sides.
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