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1. 发明授权

US06797421B2 Method and apparatus for preventing water in fuel cell power plants from freezing during storage 有权
标题翻译：在储存期间防止燃料电池发电厂中的水冻结的方法和装置
公开(公告)号：US06797421B2
公开(公告)日：2004-09-28
申请号：US10043791
申请日：2002-01-11
申请人： Richard J. Assarabowski , William T. Unkert , Leonard A. Bach , Albert P. Grasso , Benoit Charles Olsommer
发明人： Richard J. Assarabowski , William T. Unkert , Leonard A. Bach , Albert P. Grasso , Benoit Charles Olsommer
IPC分类号： H01M812
CPC分类号： H01M8/2475 , H01M8/04007 , H01M8/04022 , H01M8/04029 , H01M8/04253 , H01M2008/1095
摘要： A keep warm system for a fuel cell, power plant (10), typically of the PEM type, prevents freeze-sensitive portions of the power plant, such as the cell stack assembly (CSA) (12) and the water management system (28, 30), from freezing under extreme cold external temperatures, during extended storage (CSA shut-down) periods. Pre-stored and pressurized fuel, typically hydrogen (25), normally used to fuel the anode (16) of the CSA, is used as fuel for a catalytic oxidation reaction at a catalytic burner (66) to produce heated gas that convectively passes in heat exchange relation with the freeze sensitive portions (12, 28, 30) of the power plant (10). The convective flow of the heated gases induces the air flow to the burner (66), obviating the need for parasitic electrical loads. Thermal insulating means (64) substantially enclose the freeze-sensitive CSA (12) and/or the water management system (28, 30), and the convective flow of the heated gas from the catalytic burner (66), to improve system thermal efficiency.
摘要翻译：燃料电池的保温系统，通常为PEM型的发电厂（10）防止电厂的冷冻敏感部分，例如电池堆组件（CSA）（12）和水管理系统（28），30），在极端寒冷的外部温度下，在延长储存（CSA关闭）期间冻结。通常用于燃料CSA的阳极（16）的预先储存和加压的燃料（通常是氢气（25））用作催化燃烧器（66）上的催化氧化反应的燃料，以产生对流通过的加热气体与发电厂（10）的冷冻敏感部分（12,28,30）的热交换关系。加热的气体的对流流动引起空气流向燃烧器（66），从而避免了对寄生电力负载的需要。绝热装置（64）基本上包围冷冻敏感CSA（12）和/或水管理系统（28,30）以及来自催化燃烧器（66）的加热气体的对流，以提高系统热效率。

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