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Patent Searching and Data


Title:
【発明の名称】燃料電池
Document Type and Number:
Japanese Patent JP2510676
Kind Code:
B2
Abstract:
PURPOSE:To make gas flow within a manifold uniform by making pressure loss produced by increasing gas passage resistance larger than head pressure in the lower part of an outlet manifold. CONSTITUTION:A pair of gas diffusion electrodes 1, 2 are stacked through a separator 4. These units are stacked in several steps, and required gases are supplied to and exhausted from the stacks with manifolds. Head pressure HX P is produced in the lower part of an outlet manifold by the height H of the manifold and the density difference P between supply and exhaust gases. Passage resistance is formed by installing projections 10 in gas passages 9 formed between a gas diffusion electrode and the facing separator to produce required pressure loss L. By setting the pressure loss L to meet the relation of L>HX P, gas uniformaly flows in the manifold with it always pushed in. Density change of fuel gas is larger than that of oxidizing gas and passage resistance is increased.

Inventors:
TAKEMOTO TOSHIAKI
NANBA YOSHIAKI
Application Number:
JP15358488A
Publication Date:
June 26, 1996
Filing Date:
June 23, 1988
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H01M4/86; H01M8/02; H01M8/24; (IPC1-7): H01M8/24
Domestic Patent References:
JP6290871A
JP58166658A
JP58129788A
JP6313276A
JP56168364U
Attorney, Agent or Firm:
Yusuke Hiraki