Patent ID: 7534521
Filing Date: 2009-05-19
Classification: H01M,Y02E

Abstract:
1. An integral multi-stack system of fuel cell, comprising: a plurality of fuel cell stacks, each of which comprises a fuel inlet port, an oxidant inlet port, a coolant inlet port, a fuel outlet port, an oxidant outlet port, and a coolant outlet port which are used for fuel supplying, oxidant supplying, coolant supplying, exhausted fuel discharging, an exhausted oxidant discharging, and a coolant discharging for said stack unit respectively; and a manifolding functional frame, which comprises: a non-porous body which is provided between said fuel cell stacks for transversely and spacedly mounting said fuel cell stacks at two sides of said non-porous body, and comprises a main fuel supply passage defining a main fuel inlet at a first side of said non-porous body, a main oxidant supply passage defining a main oxidant inlet at said first side of said non-porous body, a main coolant supply passage defining a main coolant inlet at said first side of said non-porous body, a main fuel discharging passage defining a main fuel outlet at a second side of said non-porous body which is opposed to said first side, a main oxidant discharging passage defining a main oxidant outlet at said second side of said non-porous body, and a main coolant discharging passage defining a main coolant outlet at said second side of said non-porous body, wherein said main fuel supply passage, said main oxidant supply passage, said main coolant supply passage, said main fuel discharging passage, said main oxidant discharging passage, and said main coolant discharging passage are longitudinally extended along said non-porous body, wherein said non-porous body further comprises a fuel supply sub-passage communicating said fuel supply passage with each of said fuel inlet ports, an oxidant supply sub-passage communicating said main oxidant supply passage with each of said oxidant inlet ports, a coolant supply sub-passage communicating said main coolant supply passage with each of said coolant inlet ports, a fuel discharging sub-passage communicating said main fuel discharging passage with each of said fuel outlet ports, an oxidant discharging sub-passage communicating said main oxidant discharging passage with each of said oxidant outlet ports, and a coolant discharging sub-passage communicating said main coolant discharging passage with each of said coolant outlet ports, wherein a supply and a discharge of said fuel, oxidant and coolant are spacedly provided on two ends of said non-porous body respectively, so that for each of said fuel cell stacks, a material flow of said fuel, said oxidant and said coolant between said fuel inlet port and said fuel outlet port, said oxidant inlet port and said oxidant outlet port, and said coolant inlet port and said coolant outlet port respectively are independent from said other fuel cell stacks so as to simplify a flow network within said fuel cell and to minimize a flow impedance and energy loss thereof.