Fuel cell
AssigneeHonda Motor Co., Ltd.
InventorsKentaro ISHIDA, Takeshi USHIO, Eri TERADA
Life of this patent
Estimating the term…
Abstract
A fuel cell includes a cathode side separator. An oxygen-containing gas flow field is formed on a surface of the cathode side separator. The oxygen-containing gas flow field includes an inlet channel having a plurality of flow grooves connected to the oxygen-containing gas supply passage, an outlet channel having a plurality of flow grooves connected to the oxygen-containing gas discharge passage, and an intermediate channel having flow grooves with both ends connected to the inlet channel and the outlet channel respectively. The flow grooves of the outlet channel are longer than the flow grooves of the inlet channel, and the flow grooves of the outlet channel are narrowed toward the oxygen-containing gas discharge passage.
Claims8
A fuel cell formed by stacking an electrolyte electrode assembly and a separator in a stacking direction, the eleCttolyte electrode assembly including a cathOde, an anode, and, an electrolyte interposed between the cathode and the anode, an oxygen-containing gas flow field for supplying an oxygen-containing gas along the cathode only in one direction and a fuel gas flow field for supplying a fuel gas along the anode only in another direction opposite to the one direction being formed in the fuel cell, an oxygen-containing gas supply passage and an oxygen-containing gas discharge passage for allowing the oxygen-containing gas to flow in the stacking direction, and a fuel gas supply passage and a fuel gas discharge passage for allowing the fuel gas to flow in the stacking direction being provided in the fuel cell,
- wherein the oxygen-containing gas discharge passage, and a pair of the fuel gas supply passages on both sides of the oxygen-containing gas discharge passage are provided at one end and on a surface of the separator;
- and
- the fuel gas discharge passage, and a pair of the oxygen-containing gas supply passages on both sides of the fuel gas discharge passage are provided at another end and on the surface of the separator.
A fuel cell formed by stacking an electrolyte electrode assembly and a rectangular separator in a stacking direction, the electrolyte electrode assembly including a cathode, an anode, and an electrolyte interposed between the cathode and the anode, an oxygen-containing gas flow field for supplying an oxygen-containing gas along the cathode only in a same direction and a fuel gas flow field for supplying a fuel gas along the anode only in a same direction being formed in the fuel cell, oxygen-containing gas passages for allowing the oxygen-containing gas to flow in the stacking direction, and fuel gas passages for allowing the fuel gas to flow in the stacking direction being provided in the fuel cell,
- wherein one of the oxygen-containing gas passages and a pair of the fuel gas supply passages provided on both sides of the oxygen-containing gas passage are arranged at an end of one short side and on a surface of the separator;
- one of the fuel gas passages, and a pair of the oxygen-containing gas supply passages provided on both sides of the fuel, gas discharge passage are arranged at an end of another short side and on the surface of the separator;
- and
- the oxygen-containing gas passages include an oxygen-containing gas supply passage and an oxygen-containing gas discharge passage, and the fuel gas passages include a fuel gas supply passage and a fuel gas discharge passage.
Dependencies are inferred from the claim text.