Invention Application
US20100136451A1 FUEL CELL SYSTEM AND CURRENT CONTROL METHOD OF SAME 有权
燃料电池系统及其电流控制方法

  • Patent Title: FUEL CELL SYSTEM AND CURRENT CONTROL METHOD OF SAME
  • Patent Title (中): 燃料电池系统及其电流控制方法
  • Application No.: US12598532
    Application Date: 2008-06-27
  • Publication No.: US20100136451A1
    Publication Date: 2010-06-03
  • Inventor: Hiroyuki ImanishiKota ManabeTomoya Ogawa
  • Applicant: Hiroyuki ImanishiKota ManabeTomoya Ogawa
  • Priority: JP2007-174579 20070702
  • International Application: PCT/JP2008/062115 WO 20080627
  • Main IPC: H01M8/04
  • IPC: H01M8/04
FUEL CELL SYSTEM AND CURRENT CONTROL METHOD OF SAME
Abstract:
A control unit 80, when calculating a request current I0 according to a system request electric power Preq and calculating a target current I1 by correcting the request current I0 with PI compensation calculation based on a minimum cell voltage Vm detected by a cell monitor 101, variably changes a proportional gain Kp according to the current value at the present time when calculating a current limit value ΔI as the amount of correction of a request current I0 according to the equation ΔI=ΔV×Kp+ΔΣV×Ki, thereby enhancing controllability to control the current of a fuel cell 20 to a target current value I1. When controlling the current of a fuel cell by determining a target current value by correcting a request current by PI compensation using the difference between a minimum cell voltage and a threshold voltage, controllability to control the current of the fuel cell to the target current value can be enhanced.
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