摘要:
A fuel cell is disclosed comprising: a power generation layer including an electrolyte membrane, and an anode and a cathode provided on respective surfaces of the electrolyte membrane; a fuel gas flow path layer located on a side of the anode of the power generation layer to supply a fuel gas to the anode while flowing the fuel gas along a flow direction of the fuel gas approximately orthogonal to a stacking direction in which respective layers of the fuel cell are stacked; and an oxidizing gas flow path layer located on a side of the cathode of the power generation layer to supply an oxidizing gas to the cathode while flowing the oxidizing gas along a flow direction of the oxidizing gas opposed to the flow direction of the fuel gas. A power generation area of the fuel cell, in which electric power is generated, has an upstream region including a most upstream position along the flow direction of the fuel gas and a downstream region including a most downstream position along the flow direction of the fuel gas. A midstream region, which is a remaining region of the power generation area other than the upstream region and the downstream region, has higher water vapor transfer resistance between the anode side and the cathode side than the upstream region and the downstream region.
摘要:
The procedure of the invention successively obtains an estimated value of amount of liquid water in a fuel cell during operation in each specified period by the following steps (a) to (d), thereby improving the detection accuracy of the water condition inside the fuel cell. The step (a) obtains a previous estimated value. The step (b) obtains a drainage rate that represents an amount of liquid water discharged from the fuel cell per unit time, based on the previous estimated value and a value representing a current flow rate of a reactive gas in the fuel cell. The step (c) multiplies the drainage rate by a period of obtaining the estimated value, so as to calculate an amount of liquid water discharged from the fuel cell for a specified duration. The step (d) determines a current estimated value, based on the amount of liquid water discharged from the fuel cell for the specified duration.
摘要:
An anode separator 30 of a fuel cell 10 forms: a plurality of gas flow channels 45 arranged in parallel to let a fuel gas flow to an MEA 20; a supply passage 42 configured to supply the plurality of gas flow channels 45 with the fuel gas; and a recovery passage 48 configured to recover the fuel gas from the plurality of gas flow channels 45. The plurality of gas flow channels 45 include: a gas flow channel 45a connects the supply passage 42 and the recovery passage 48; and a gas flow channel 45b having the supply passage 42-side blocked.
摘要:
A fuel cell has a joint body produced by interposing an electrolyte member between a pair of electrodes, and a separator (500A) which holds the joint body. The separator (500A) comprises a rib portion (555, 556) which divides an area which forms a fluid passage for fluid which flows through the separator, wherein the plurality of regions communicate with each other. The width (W1, W2, W3) of each region is different, with the width (W1) of the regions near an inlet portion of the fluid being wider than the width (W3) of the regions near an outlet portion of the fluid.
摘要:
A fuel cell system 100 includes a fuel cell 10, a cathode gas supply system 30, a supply valve 34, an exhaust valve 43 and a controller 20. The fuel cell 10 has a supply manifold M1, an exhaust manifold M2, and a power generation area GA connected with these manifolds M1 and M2. The cathode gas supply system 30 causes a gas to be flowed into the supply manifold M1. The supply valve 34 is operable to seal the supply manifold M1, whereas the exhaust valve 43 is operable to seal the exhaust manifold M2. The controller 20 closes the supply valve 34 and the exhaust valve 43 after operation stop of the fuel cell 10 to seal the fuel cell 10 under a specified pressure and then waits for a predefined time. The controller 20 subsequently opens the supply valve 34 to move water remaining in the power generation area GA on the flow of the gas toward outside of the power generation area GA.
摘要:
An anode separator 30 of a fuel cell 10 forms: a plurality of gas flow channels 45 arranged in parallel to let a fuel gas flow to an MEA 20; a supply passage 42 configured to supply the plurality of gas flow channels 45 with the fuel gas; and a recovery passage 48 configured to recover the fuel gas from the plurality of gas flow channels 45. The plurality of gas flow channels 45 include: a gas flow channel 45a connects the supply passage 42 and the recovery passage 48; and a gas flow channel 45b having the supply passage 42-side blocked.
摘要:
A fuel cell has a joint body produced by interposing an electrolyte member between a pair of electrodes, and a separator (500A) which holds the joint body. The separator (500A) comprises a rib portion (555, 556) which divides an area which forms a fluid passage for fluid which flows through the separator, wherein the plurality of regions communicate with each other. The width (W1, W2, W3) of each region is different, with the width (W1) of the regions near an inlet portion of the fluid being wider than the width (W3) of the regions near an outlet portion of the fluid.
摘要:
There is provided a fuel cell. The fuel cell comprises a stacked body that has a stacked configuration by stacking a plurality of single fuel cells; a fastening support member that is extended along a stacking direction of the plurality of single fuel cells and is configured to fasten the stacked body in the stacking direction; and an impact transmission member that is configured to include a dilatant fluid and is placed between the stacked body and the fastening support member to be arranged in a location corresponding to multiple consecutive single fuel cells along the stacking direction among the plurality of single fuel cells.