Fuel cell and separator constituting the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-002/38
H01M-008/02
H01M-008/04
H01M-008/24
H01M-008/10
출원번호
US-0523132
(2008-01-28)
등록번호
US-8993188
(2015-03-31)
우선권정보
JP-2007-018063 (2007-01-29)
국제출원번호
PCT/IB2008/000183
(2008-01-28)
§371/§102 date
20090714
(20090714)
국제공개번호
WO2008/093200
(2008-08-07)
발명자
/ 주소
Goto, Sogo
출원인 / 주소
Toyota Jidosha Kabushiki Kaishi
대리인 / 주소
Kenyon & Kenyon LLP
인용정보
피인용 횟수 :
0인용 특허 :
1
초록▼
Each separator of a fuel cell stacked alternately with the power generation bodies has a first surface facing the first electrode of the power generation body, a second surface facing the second electrode of another power generation body, a first reactant gas channel that supplies or discharges a fi
Each separator of a fuel cell stacked alternately with the power generation bodies has a first surface facing the first electrode of the power generation body, a second surface facing the second electrode of another power generation body, a first reactant gas channel that supplies or discharges a first reactant gas to or from the first electrode and that extends in the separator and has an opening portion opened in the first surface, and a second reactant gas channel that supplies and discharges a second reactant gas to or from the second electrode facing the second surface and that extends in the separator and has an opening portion opened in the second surface. The opening portion of the first reactant gas channel and the opening portion of the second reactant gas channel are both disposed along a first portion of a peripheral border of a power generation region.
대표청구항▼
1. A fuel cell comprising: power generation bodies each having a first electrode and a second electrode; anda plurality of separators stacked alternately with the power generation bodies so as to constitute the fuel cell, each separator including:a first surface that faces the first electrode of one
1. A fuel cell comprising: power generation bodies each having a first electrode and a second electrode; anda plurality of separators stacked alternately with the power generation bodies so as to constitute the fuel cell, each separator including:a first surface that faces the first electrode of one of the power generation bodies;a second surface that faces the second electrode of another one of the power generation bodies;at least one first reactant gas discharge channel that is provided for discharging a first reactant gas from the first electrode facing the first surface and that extends in the separator and has, at an end of the first reactant gas channel, a discharge opening portion that is opened in the first surface; anda second reactant gas supply channel that is provided for supplying a second reactant gas to the second electrode facing the second surface and that extends in the separator and has, at an end of the second reactant gas channel, a supply opening portion that is opened in the second surface, whereinat least a portion of the discharge opening portion of the at least one first reactant gas discharge channel and at least a portion of the supply opening portion of the second reactant gas supply channel are disposed, in the separator, along substantially an entire length of a first side of a generally rectangular power generation region that faces the power generation bodies when the separator is stacked with the power generation bodies, and are positioned parallel to each otherwherein the discharge opening portion and the supply opening portion are rectangular shaped longitudinal slits each having two equally sized long sides and two equally sized short sides, and the long sides being parallel to sides of the power generation region. 2. The fuel cell according to claim 1, wherein each separator further includes at least one first reactant gas supply channel that is provided for supplying the first reactant gas to the first electrode facing the first surface and that extends in the separator and has, at an end of the first reactant gas supply channel, an opening portion that is opened in the first surface and is disposed along a second side of the power generation region that is located opposite from the first side across the power generation region. 3. The fuel cell according to claim 2, wherein each separator further includes a second reactant gas discharge channel that is provided for discharging the second reactant gas from the second electrode facing the second surface and that extends in the separator and has, at an end of the second reactant gas discharge channel, an opening portion that is opened in the second surface and is disposed along the second side. 4. The fuel cell according to claim 1, wherein a flowing direction in the at least one first reactant gas discharge channel is substantially perpendicular to the first side, anda flowing direction in the second reactant gas supply channel is substantially parallel to the first side. 5. The fuel cell according to claim 1, wherein each separator further includes a plurality of first reactant gas supply channels, andthe first reactant gas supply channels are disposed so that pressure losses of the first reactant gas supply channels become equal to each other. 6. The fuel cell according to claim 1, wherein each separator further includes a first reactant gas discharge manifold that communicates with another end of the at least one first reactant gas discharge channel and that penetrates through the separator, and a second reactant gas supply manifold that communicates with another end of the second reactant gas supply channel and that penetrates through the separator, andthe second reactant gas supply channel has a channel width that becomes narrower with increasing distance from the second reactant gas supply manifold. 7. The fuel cell according to claim 6, wherein the opening width of the supply opening portion of the second reactant gas supply channel also becomes narrower with increasing distance from the second reactant gas supply manifold, similarly to the channel width of the second reactant gas supply channel. 8. The fuel cell according to claim 7, the fuel cell further comprising a porous body which is disposed between the second electrode of the another one of the power generation bodies and the second surface of the separator and in which the second reactant gas flows, wherein an external shape of the porous body is formed so as to extend along the opening portion of the second reactant gas supply channel formed in the second surface. 9. The fuel cell according to claim 1, wherein each separator further includes a first reactant gas discharge manifold that communicates with another end of the first reactant gas discharge channel and that penetrates through the separator, and a second reactant gas supply manifold that communicates with the second reactant gas supply channel and that penetrates through the separator,the first reactant gas discharge manifold is disposed outside the power generation region, along substantially the entire length of the first side of the power generation region, andthe second reactant gas supply manifold is disposed outside the power generation region, along a third side of the power generation region adjacent to the first side. 10. The fuel cell according to claim 1, wherein each separator has a laminate structure that includes a first plate having the first surface, a second plate having the second surface, and an intermediate plate disposed between the first plate and the second plate,the at least one first reactant gas discharge channel is formed by a first intermediate plate penetration opening portion that penetrates through the intermediate plate and a first plate penetration opening portion that penetrates through the first plate, andthe second reactant gas supply channel is formed by a second intermediate plate penetration opening portion that penetrates through the intermediate plate and a second plate penetration opening portion that penetrates through the second plate. 11. The fuel cell according to claim 1, wherein the first electrode is a cathode,the second electrode is an anode,the first reactant gas is oxidizing gas, andthe second reactant gas is fuel gas.
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이 특허에 인용된 특허 (1)
Wilson Mahlon S., Ambient pressure fuel cell system.
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