摘要:
A preservation assembly of a polymer electrolyte fuel cell stack is provided. The assembly includes an uninstalled polymer electrolyte fuel cell stack and sealing units. The uninstalled polymer electrolyte fuel cell stack is provided with an oxidizing agent passage having an inlet and an outlet and extending through a cathode and a reducing agent passage having an inlet and an outlet and extending through an anode. The sealing units include sealing plugs or containers and are configured to seal the inlet and the outlet of the oxidizing agent passage within which an oxygen concentration has been decreased and to seal the inlet and the outlet of the reducing agent passage within which the oxygen concentration has been decreased. The uninstalled polymer electrolyte fuel cell stack is in a state before an assembled polymer electrolyte fuel cell stack is incorporated into a fuel cell system.
摘要:
Elastic members that are integrally joined to a frame member are placed between an outer edge of an electrode unit and an inner edge of the frame member, and in the assembled state of the single cell module, the elastic members are elastically deformed in the thickness direction of a membrane-electrode-frame assembly so that the gap between the membrane-electrode-frame assembly and the separator is sealed in a tight contact state.
摘要:
For the purpose of providing a fuel cell module having a small number of molding processes and favorable productivity, the edge of a polymer electrolyte membrane (44) exposed at the outer periphery of an electrode section, which is formed by providing an anode electrode (46a) and a cathode electrode (46b) on the polymer electrolyte membrane (44), is placed on the upper surface of one frame (47a); and another frame (47c) is molded on the upper surface of the one frame (47a) by injecting a resin material having a smaller Young's modulus than the one frame (47a), and a seal section (49) made from the same material as the other frame (47c) is simultaneously molded on the lower surface of the other frame (47a).
摘要:
An object of the present invention is to provide a fuel cell including a reaction gas supply path which makes it difficult to cause water condensation in a region near an end plate.A fuel cell of the present invention comprises a cell stack 2 having a reaction gas passage 13a inside thereof and having on one end surface thereof a reaction gas supply inlet 17 from which a reaction gas is supplied to the reaction gas passage 13a, a joint 5 connecting the reaction gas supply inlet 17 to an external pipe P for supplying the reaction gas, plate-shaped end members 3, 4 which are disposed on one end surface of the cell stack 2 and have through-holes 21, 23 into which the joint 5 is inserted so as not to contact inner wall surfaces thereof, and a closing member 9 for substantially closing a space formed between the joint 5 and the inner wall surfaces of the through-holes 21, 23.
摘要:
In a fuel cell composed of a pair of separators with a membrane electrode assembly sandwiched therebetween, gas passages having a plurality of generally linear passage portions, and bent passage portions each of which makes one end portion of the linear passage portions communicated with the other end portion of the linear passage portions, are formed so as to be communicative from a gas introducing port to a discharge port. In inner wall surfaces of the groove portions of the separators constituting the linear passage portions, water-retaining groove portions capable of retaining inside thereof at least part of water generated in the gas passage are formed in such a grooved configuration as to be substantially continuous along the passage portion. As a water drop generated within the gas passage makes contact with retained water within the water-retaining groove portions, growth of the water drop is suppressed to avoid any blockage of the gas passage, by which the anti-flooding property is improved.
摘要:
In a polymer electrolyte fuel cell provided with a fuel cell stack assembled by sandwiching a plurality of stacked single cell modules with a plurality of fastening members through a pair of end plates, the fuel cell including a first elastic member arranged between the fastening member and the end plate and a plurality of second elastic members arranged between the end plate and the end of the fuel cell stack, wherein each of the second elastic members is arranged on the surface of the end plate corresponding to the electrode portion of a membrane electrode assembly in each of the single cell module and each of the first elastic members is arranged on the surface of the end plate corresponding to a seal member arrangement region in which seal member is arranged between the periphery of the membrane electrode assembly and a pair of separator plates in each single cell module.
摘要:
Elastic members that are integrally joined to a frame member are placed between an outer edge of an electrode unit and an inner edge of the frame member, and in the assembled state of the single cell module, the elastic members are elastically deformed in the thickness direction of a membrane-electrode-frame assembly so that the gap between the membrane-electrode-frame assembly and the separator is sealed in a tightly contact state.
摘要:
A MEA-frame assembly is arranged in a mold for injection molding to form a first flow passage arranged so as to extend along the outer periphery of an electrode between the outer periphery of the electrode and the inner periphery of a frame, a second flow passage arranged so as to extend along an inner elastic member between the inner periphery and outer periphery of the frame and a plurality of connecting flow passages which communicate the first flow passage with the second flow passage. An elastic resin is injected into the first flow passage to fill the first flow passage with the elastic resin and to fill the second flow passage with the elastic resin through each of the communicating flow passages, thereby an elastic member which hermetically seals the space between the MEA-frame assembly and the separator is integrally formed.
摘要:
The polymer electrolyte fuel cell of the present invention is equipped with a cell having an MEA having a hydrogen ion-conducting polymer electrolyte membrane and an anode and a cathode sandwiching the polymer electrolyte membrane; a platelike anode-side separator positioned on one side of the MEA so that the front surface thereof contacts the anode, with fuel gas passages through which fuel gas flows being formed in the front surface; and a platelike cathode-side separator positioned on the other side of the MEA so that the front surface thereof contacts the cathode, with oxidizing gas passages through which oxidizing gas flows being formed in the front surface; a cell stack in which a plurality of said cells is stacked; and a cooling water flow passage, through which cooling water flows, formed on at least the rear surface of one from among the anode-side separator and the cathode-side separator of at least a prescribed cell in said cell stack; where said fuel gas, oxidizing gas, and cooling water flow through said fuel gas passage, oxidizing gas passage, and cooling water passage, respectively, in a manner not running counter to gravity.