Patent ID: 8663858
Filing Date: 2014-03-04
Classification: H01M,Y02E,Y02T

Abstract:
1. A fuel cell system having a fuel cell stack that generates electric power by electrochemical reaction of reaction gases fed to the fuel electrode and oxidant electrode, the fuel cell system comprising: a fuel gas feeding device that feeds fuel gas; a plurality of auxiliary devices comprising: a control device programmed to perform the following fuel conservation operation: a voltage detecting device that detects the voltage of said fuel cell stack, wherein said control device resets operation from said fuel conservation operation to an idle operation when said voltage during said fuel conservation operation is lower than a prescribed level, wherein the idle operation comprises: wherein when a transition is made to said fuel conservation operation, said control device delays setting the stack current for said fuel conservation operation until after the shutdown of said auxiliary devices so that said stack voltage does not exceed a voltage in said idle operation.