Bipolar plate
AssigneeRöchling Automotive SE & Co. KG
InventorsFabrizio Chini, Edoardo Martelli, Manfred Kampke
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Abstract
A bipolar plate for a fuel cell comprises a fiber reinforcement structure containing thermoplastically bonded carbon fibers, the fiber reinforcement structure being multilayered and comprising a plurality of fiber reinforcement structure layers, at least two of which contain thermoplastically bonded carbon fibers.
Claims18
A bipolar plate for a fuel cell, the bipolar plate comprising a fiber reinforcement structure including thermoplastically bonded carbon fibers, the fiber reinforcement structure being multilayered and comprising a plurality of fiber reinforcement structure layers, said fiber reinforcement structure layers having two top layers on the outside of the fiber reinforcement structure and an inner core layer arranged between said top layers, each of the top and the core layers having thermoplastically bonded carbon fibers, wherein a fiber reinforcement structure layer lying further to the outside has greater carbon fiber proportion by mass than a fiber reinforcement structure layer lying further to the inside of the fiber reinforcement structure.
A bipolar plate for a fuel cell, the bipolar plate comprising a fiber reinforcement structure including thermoplastically bonded carbon fibers, the fiber reinforcement structure being multilayered and comprising a gas-impermeable separating region next to a porous region in the direction of thickness of the bipolar plate, said porous region comprising a first outer fiber reinforcement structure layer and a second inner fiber reinforcement structure layer, said second inner fiber reinforcement structure layer being arranged between the gas-impermeable separating region and the first outer fiber reinforcement structure layer in the direction of thickness of the bipolar plate, said first outer and second inner fiber reinforcement structures each having thermoplastically bonded carbon fibers, wherein the first outer fiber reinforcement structure layer has greater carbon fiber proportion by mass than the second inner fiber reinforcement structure layer.
Dependencies are inferred from the claim text.