Title:
FUEL CELL STACK AND OPERATION METHOD FOR FUEL CELL STACK
Document Type and Number:
WIPO Patent Application WO/2021/045197
Kind Code:
A1
Abstract:
According to the present embodiment, a fuel cell stack is provided with a cell stack comprising a stack of multiple unit cells, each comprising an electrolyte film, a fuel electrode porous flow-path plate, and an oxidant electrode porous flow-path plate, the pressure of cooling water in a cooling water flow path is lower than that of a fuel gas in a fuel electrode flow path, the differential pressure between the fuel gas pressure at an inlet part of the fuel electrode flow path and the cooling water pressure in the cooling water flow path corresponding to the inlet part is smaller than the differential pressure between the fuel gas pressure at an outlet part of the fuel electrode flow path and the cooling water pressure in the cooling water flow path corresponding to the outlet part, and the larger of the differential pressures among the largest value of the differential pressure between the cooling water pressure and the oxidant pressure and the largest value of the differential pressure between the cooling water pressure and the fuel electrode pressure is smaller than the capillary force of the flow-path plates.
Inventors:
KATO YUMA (JP)
MAEKAWA AKIRA (JP)
MAEKAWA AKIRA (JP)
Application Number:
PCT/JP2020/033618
Publication Date:
March 11, 2021
Filing Date:
September 04, 2020
Export Citation:
Assignee:
TOSHIBA KK (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
H01M8/023; H01M8/0267; H01M8/04291; H01M8/04746; H01M8/10; H01M8/2465; H01M8/2483
Foreign References:
| JP2005158596A | 2005-06-16 | |||
| JP2013191433A | 2013-09-26 |
Attorney, Agent or Firm:
NAKAMURA Yukitaka et al. (JP)
Download PDF: