发明授权
US09070921B2 Subzero ambient shutdown purge operating strategy for PEM fuel cell system
有权
PEM燃料电池系统的零度环境关闭清洗操作策略
- 专利标题: Subzero ambient shutdown purge operating strategy for PEM fuel cell system
- 专利标题(中): PEM燃料电池系统的零度环境关闭清洗操作策略
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申请号: US13431703申请日: 2012-03-27
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公开(公告)号: US09070921B2公开(公告)日: 2015-06-30
- 发明人: Michael Cartwright , Bruce J. Clingerman , Daniel I. Harris , Aaron Rogahn , Derek R. Lebzelter
- 申请人: Michael Cartwright , Bruce J. Clingerman , Daniel I. Harris , Aaron Rogahn , Derek R. Lebzelter
- 申请人地址: US MI Detroit
- 专利权人: GM Global Technology Operations LLC
- 当前专利权人: GM Global Technology Operations LLC
- 当前专利权人地址: US MI Detroit
- 代理机构: Miller IP Group, PLC
- 代理商 John A. Miller
- 主分类号: H01M8/06
- IPC分类号: H01M8/06 ; H01M16/00 ; H01M8/04
摘要:
A method for purging water from a fuel cell stack at fuel cell system shutdown. The method includes determining a stack water generation request to control the rate of drying of membranes in the stack and determining a cathode catalytic heating water generation request. A maximum charge a battery in the fuel cell system can accept is also determined. An ancillary power request for powering components of the fuel cell system during shutdown is determined. The method allocates how much of the water generation request will be fulfilled by operating the fuel cell stack to charge the battery and to provide the power needed for the ancillary power request, and how much of the water generation request will be fulfilled by cathode catalytic heating that produces water and heat in a cathode side of the fuel cell stack.