Fuel cell
AssigneeHonda Motor Co., Ltd.
InventorHiroki Homma
Life of this patent
Estimating the term…
Abstract
A flow path member includes an orifice section, a pressure regulating section, a filter section, and a distribution section joined together integrally, and these components are detachably provided between insulating seals. In the orifice section, orifice holes are formed around a fuel gas supply passage. In the pressure regulating section, a substantially ring shaped pressure regulating chamber is formed. In the filter section, a plurality of filter holes are formed. The orifice holes and the filter holes are connected through the pressure regulating chamber. In the distribution section, a plurality of distribution grooves for distributing the fuel gas flowing through the fuel gas supply passage in a stacking direction to flow along a separator surface, and a circular groove for supplying the fuel gas to the filter section are formed.
Claims24
A fuel cell formed by stacking an electrolyte electrode assembly and separators, said electrolyte electrode assembly comprising an anode, a cathode, and an electrolyte interposed between said anode and said cathode, said electrolyte electrode assembly being sandwiched between said separators, said separators each comprising:
- a sandwiching section having a fuel gas channel for supplying a fuel gas along an electrode surface of said anode and an oxygen-containing gas channel for supplying an oxygen-containing gas along an electrode surface of said cathode, separately;
- a bridge connected to said sandwiching section, and having a reactant gas supply channel for supplying the fuel gas to said fuel gas channel or supplying the oxygen-containing gas to said oxygen-containing gas channel;
- and
- a reactant gas supply unit connected to said bridge, a reactant gas supply passage for supplying the fuel gas or the oxygen-containing gas to said reactant gas supply channel extending through said reactant gas supply unit in a stacking direction,
- wherein a flow path member is detachably provided at said reactant gas supply unit via a seal member which seals the reactant gas supply unit, the seal member including a first seal and a second seal, the flow path member detachably provided between the first seal and second seal;
- and
- said flow path member includes an orifice section having orifice holes for reducing a flow rate of the fuel gas or the oxygen-containing gas supplied from said reactant gas supply passage to said reactant gas supply channel, the flow path member being provided between the separators sandwiching the electrolyte electrode assembly.
A fuel cell formed by stacking an electrolyte electrode assembly and separators, said electrolyte electrode assembly comprising an anode, a cathode, and an electrolyte interposed between said anode and said cathode, said electrolyte electrode assembly being sandwiched between said separators, said separators each comprising:
- a sandwiching section having a fuel gas channel for supplying a fuel gas along an electrode surface of said anode and an oxygen-containing gas channel for supplying an oxygen-containing gas along an electrode surface of said cathode separately;
- a bridge connected to said sandwiching section, and having a reactant gas supply channel for supplying the fuel gas to said fuel gas channel or supplying the oxygen-containing gas to said oxygen-containing gas channel;
- and
- a reactant gas supply unit connected to said bridge, a reactant gas supply passage for supplying the fuel gas or the oxygen-containing gas to said reactant gas supply channel extending through said reactant gas supply unit in a stacking direction,
- wherein a flow path member is detachably provided at said reactant gas supply unit;
- via a seal member which seals the reactant gas supply unit, the seal member including a first seal and a second seal, the flow path member detachably provided between the first seal and second seal;
- and
- said flow path member includes a filter section having filter holes for filtering the fuel gas or the oxygen-containing gas supplied from said reactant gas supply passage to said reactant gas supply channel, the flow path member being provided between the separators sandwiching the electrolyte electrode assembly.
Dependencies are inferred from the claim text.