Fuel cell, and collector plate thereof
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakahashi Tsuyoshi
Life of this patent
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Abstract
A fuel cell and a collector plate thereof that are able to improve the characteristic of distribution of reaction gasses to gas passages. Each collector plate of the fuel cell has reaction gas-conveying gas passages that are formed in stacking surfaces that face adjacent electrolyte films. Each gas passage is provided with a supply hole for distributing and supplying a reaction gas and a discharge hole for discharging the reaction gas from the gas passage. In a state where collector plates are stacked with electrolyte films placed therebetween, the supply holes connect to form a supply manifold, and the discharge holes connect to form a discharge manifold. The opening area of each discharge hole is set greater than the opening area of each supply hole.
Claims12
A collector plate of a fuel cell, comprising:
- a gas passage formed in at least one surface;
- a supply hole for distributing and supplying a reaction gas into the gas passage;
- and
- a discharge hole for discharging the reaction gas from the gas passage,
- wherein an opening area of the discharge hole is greater than an opening area of the supply hole.
A fuel cell comprising:
- a stack formed by alternately stacking collector plates and units each of which is formed by an electrolyte film and reaction electrodes sandwiching the electrolyte film;
- a gas passage formed between each unit and an adjacent collector plate, within the stack;
- a supply manifold that is formed in a stacking direction of the stack and that distributes and supplies a reaction gas into each gas passage;
- a discharge manifold which is formed in the stacking direction of the stack and to which the reaction gas in each gas passage is discharged;
- wherein a passage sectional area of the discharge manifold is greater than a passage sectional area of the supply manifold.
Dependencies are inferred from the claim text.