| 摘要 |
The present invention relates to a fuel cell system having a plurality of individual fuel cells which are combined to a stack, each of said individual fuel cells consisting of a substantially planar membrane-electrode unit, two gas diffusion layers in the form of a fiber structure and of a bipolar plate, which establishes the electrical connection to the adjacent individual fuel cell that is located above or below, wherein the gas diffusion layers adjoin the larger surfaces of the membrane electrode unit, which are located opposite of one another. The bipolar plate according to the invention comprises an active region surrounded by an edge region. In order to create a fuel cell system of the above-mentioned type, which is particularly thin, has no disadvantages in terms of weight, volume and power and moreover can be achieved in a cost-effective manner, it is proposed according to the invention that the bipolar plates in the active region have a completely flat design so that the gas-carrying region is formed exclusively by the gas diffusion layers, what amounts to at least 60% of the height of an individual fuel cell. |
