PROBLEM TO BE SOLVED: To limit an output current value of a fuel battery cell on the basis of voltage values of the lowest cell voltage and the like, thereby controlling such that the fuel battery cell is not held in a low voltage state.SOLUTION: When it is determined that the lowest cell voltage Vis less than a first threshold Vand the differential voltage Vbetween the highest cell voltage Vand the lowest cell voltage Vis greater than a second threshold V, a first current value Iis determined on the basis of the deviation between a target cell voltage difference Vand the differential voltage V, a second current value Iis determined on the basis of the deviation between the lowest cell voltage Vand a permissive low voltage V, and a smaller current value of either the first current value Iand the second current value Iis set as the maximum current value of an input current to a DC/DC converter.SELECTED DRAWING: Figure 5
【課題】、最低セル電圧等の電圧値に基づいて、燃料電池セルの出力電流値を制限し、燃料電池セルが低電圧状態で保持されないように制御する。【解決手段】最低セル電圧Vminが第1の閾値Vaよりも小さく、且つ最高セル電圧Vmaxと最低セル電圧Vminの差分電圧Vmax-minが第2の閾値Vbよりも大きいと判定された場合には、目標セル電圧差Vspreadと差分電圧Vmax-minとの偏差に基づいて、第1の電流値ILim1を決定し、最低セル電圧Vminと限界低電圧Vlowの偏差に基づいて、第2の電流値ILim2を決定し、第1の電流値ILim1及び第2の電流値ILim2のうち、小さい方の電流値を、DC/DCコンバータへの入力電流の最大電流値として設定する。【選択図】図5
METHOD OF CONTROLLING FUEL BATTERY
燃料電池の制御方法
2017-11-02
Patent
Electronic Resource
Japanese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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