Fuel cell system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorRyouichi Nanba
Life of this patent
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Abstract
A fuel cell system includes a stacked assembly, a resonance determining unit, and a controller. The stacked assembly includes a plurality of unit cells stacked together. Each of the unit cells includes an electrolyte membrane, and a pair of electrodes between which the electrolyte membrane is sandwiched. The resonance determining unit is configured to determine whether vibration of the stacked assembly which occurs during running of a vehicle is within a resonance region of the stacked assembly. The controller is configured to change a natural frequency of the stacked assembly such that the vibration of the stacked assembly falls outside the resonance region, if the resonance determining unit determines that the vibration of the stacked assembly is within the resonance region.
Claims15
A fuel cell system comprising:
- a stacked assembly including a plurality of unit cells stacked together, each of the unit cells including an electrolyte membrane and a pair of electrodes between which the electrolyte membrane is sandwiched;
- a resonance determining unit configured to determine whether vibration of the stacked assembly, which occurs during running of a vehicle, is within a resonance region of the stacked assembly;
- and
- a controller configured to change a natural frequency of the stacked assembly such that the vibration of the stacked assembly falls outside the resonance region if the resonance determining unit determines that the vibration of the stacked assembly is within the resonance region.
A fuel cell system comprising:
- a stacked assembly including a plurality of unit cells stacked together, each of the unit cells including an electrolyte membrane, and a pair of electrodes between which the electrolyte membrane is sandwiched;
- an acceleration sensor installed on the stacked assembly and configured to analyze vibration of the stacked assembly to determine whether the vibration of the stacked assembly is within a resonance region of the stacked assembly;
- a natural frequency control device configured to change at least one of a length of the stacked assembly, a density of the stacked assembly, and a modulus of longitudinal elasticity of the stacked assembly;
- and
- a controller configured to control the natural frequency control device to change at least one of the length of the stacked assembly, the density of the stacked assembly, and the modulus of longitudinal elasticity of the stacked assembly if the vibration of the stacked assembly analyzed by the acceleration sensor is within the resonance region.
Dependencies are inferred from the claim text.