FUEL CELL STACK WITH MULTILAYER TYPE COLLECTOR PLATE

摘要

A fuel cell stack is provided which manually increases the temperature of cells arranged in the vicinity of an end plate of the stack to improve starting performance of a fuel cell vehicle at temperatures below zero and driving performance thereof at low temperatures. The fuel cell stack realizes rapid thawing and heating functions in response to freezing of end cells when a vehicle is started at temperatures below zero, using a multilayer current collector having at least one thin collector plate which is structurally and sensitively expandable or contractible based on temperature changes.

主权项

1. A fuel cell stack with a multilayer type collector plate, comprising:
end plates disposed at opposite sides of stack cells stacked in a line to fixedly support the stack cells; and current collectors disposed inside the end plates to collect electricity generated by the stack cells and configured to transmit the electricity to the outside, wherein at least one of the current collectors disposed at the opposite sides of the stack cells includes a first collector plate having a current collection terminal, and a second collector plate stacked on one surface of the first collector plate, and a gap that is a thermal insulation function between the first and second collector plates by thermal contraction of the stack cells at temperatures below zero.