Direct-methanol fuel cell system and method for controlling the same
OwnerHiroyasu Sumino, Yasuhiro Harada +2inventors
InventorsHiroyasu Sumino, Yasuhiro Harada, Hirohisa Miyamoto, Nobuo Shibuya
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Abstract
A direct-methanol fuel cell system includes a power generating unit, a fuel container which is connected to the power generating unit and contains a first fuel being a methanol aqueous solution, a replenishing container which is connected to the fuel container and contains a second fuel which is methanol or a methanol aqueous solution having a concentration higher than a concentration of the first fuel, and a control unit configured to reduce a concentration of the first fuel and a voltage of the power generating unit until a temperature of the power generating unit rises to a preset temperature value.
Claims20
A direct-methanol fuel cell system comprising:
- a power generating unit including at least one membrane electrode assembly;
- a fuel container which is connected to the power generating unit and contains a first fuel being a methanol aqueous solution;
- a replenishing container which is connected to the fuel container and contains a second fuel which is methanol or a methanol aqueous solution having a concentration higher than a concentration of the first fuel;
- and
- a control unit configured to reduce a concentration of the first fuel and a voltage of the power generating unit until a temperature of the power generating unit rises to a preset temperature value.
A method for controlling a direct-methanol fuel cell system comprising a power generating unit including an anode, a cathode, and an electrolyte membrane provided between the anode and the cathode, the method comprising:
- reducing a concentration of a first fuel supplied to the anode and a voltage of the power generating unit until a temperature of the power generating unit rises to a preset temperature value, and the first fuel being a methanol aqueous solution.
A method for controlling a direct-methanol fuel cell system comprising:
- a power generating unit including at least one membrane electrode assembly;
- a fuel container which is connected to the power generating unit and contains a first fuel being a methanol aqueous solution;
- and
- a replenishing container which is connected to the fuel container and contains a second fuel which is methanol or a methanol aqueous solution having a concentration higher than a concentration of the first fuel,
- and the method comprises reducing a concentration of the first fuel and a voltage of the power generating unit until a temperature of the power generating unit rises to a preset temperature value.
Dependencies are inferred from the claim text.