Patent ID: 7960066
Filing Date: 2011-06-14
Classification: H01M,Y02B,Y02E

Abstract:
1. A fuel cell system comprising a supply port, a supply-side main flow path, a discharge-side main flow path, a plurality of branch flow paths, and a discharge port, in which the supply-side main flow path is connected to the supply port; the plurality of branch flow paths are, respectively, connected to the supply-side main flow path and the discharge-side main flow path; each of the plurality of branch flow paths has at least one power generation cell; and the discharge-side main flow path is connected to the discharge port, wherein the plurality of branch flow paths include at least a first branch flow path and a second branch flow path, wherein, with respect to each of the branch flow paths, a magnitude of a flow path resistance obtained by summing a flow path resistance from the supply port to a junction between the supply-side main flow path and the first branch flow path and a flow path resistance from a junction between the first branch flow path and the supply-side main flow path to a junction between the first branch flow path and the discharge-side main flow path is less than the magnitude of a flow path resistance obtained by summing a flow path resistance from the supply port to a junction of the supply-side main flow path with the second branch flow path that is different from the first branch flow path, a flow path resistance from a junction between the second branch flow path and the supply-side main flow path to a junction between the second branch flow path and the discharge-side main flow path, and a flow path resistance from a junction between the second branch flow path and the discharge-side main flow path to a junction between the first branch flow path and the discharge-side main flow path, and wherein when the fuel cell system has N units of the branch flow paths, a flow path resistance from a junction between an (n−1) is established (provided n<m<N and 2<n).