Fuel cell stack
AssigneeNissan Motor Co., Ltd.
InventorsMotoki Yaginuma, Manabu Sugino
Life of this patent
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Abstract
A fuel cell stack including: a metal-supported cell including a power generation cell formed of paired electrodes and an electrolyte sandwiched from both sides between the paired electrodes, and a metal supporting portion which is made of metal and which supports the power generation cell; a separator defining and forming a flow passage portion for gas flow between the separator and the power generation cell; a welded portion in which the metal-supported cell and the separator are welded to each other; a spring portion configured to apply absorption reaction force for absorbing displacement in a stacking direction in the welded portion to the metal-supported cell; and a stopper portion configured to restrict a displacement amount of the spring portion.
Claims6
A fuel cell stack comprising:
- a metal-supported cell including
- a power generation cell formed of paired electrodes and an electrolyte sandwiched from both sides between the paired electrodes, and
- a flat metal supporting plate which is made of metal and having a first flat surface on which the power generation cell is laid and supported, and a second flat surface opposite to the first flat surface;
- a separator defining and forming a flow passage portion for gas flow between the separator and the power generation cell;
- a welded portion in which the second flat surface of the flat metal supporting plate and the separator are directly welded to each other;
- a spring portion configured to apply absorption reaction force to the metal-supported cell for absorbing displacement in a stacking direction in the welded portion;
- and
- a stopper portion configured to restrict a displacement amount of the spring portion.
Dependencies are inferred from the claim text.