Invention Application
- 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
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Application No.: US12598532Application Date: 2008-06-27
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Publication No.: US20100136451A1Publication Date: 2010-06-03
- Inventor: Hiroyuki Imanishi , Kota Manabe , Tomoya Ogawa
- Applicant: Hiroyuki Imanishi , Kota Manabe , Tomoya Ogawa
- Priority: JP2007-174579 20070702
- International Application: PCT/JP2008/062115 WO 20080627
- Main IPC: H01M8/04
- IPC: H01M8/04

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.
Public/Granted literature
- US08227123B2 Fuel cell system and current control method with PI compensation based on minimum cell voltage Public/Granted day:2012-07-24
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