To provide a power supply system that can sufficiently exert output performance of an output type second battery even when a state of charge of a capacity type first battery is lowered.SOLUTION: A power supply system comprises: a load circuit including a drive motor coupled to a drive wheel; a capacity type first battery; an output type second battery; a power circuit that connects the load circuit, the first battery, and the second battery; and a management ECU for operating the power circuit to control a flow of power between the drive motor and the first and second batteries and a flow of power from the first battery to the second battery. The management ECU permits execution of power path control for supplying power output from the first battery to the second battery when a second SOC corresponding to a state of charge of the second battery is lower than a second SOC lower limit value A, and sets the second SOC lower limit value A to a larger value as a first SOC of the first battery is smaller.SELECTED DRAWING: Figure 7

    【課題】容量型の第1バッテリの充電率が低下しても出力型の第2バッテリの出力性能を十分に発揮できる電源システムを提供すること。【解決手段】電源システムは、駆動輪に連結された駆動モータを含む負荷回路と、容量型の第1バッテリと、出力型の第2バッテリと、負荷回路、第1バッテリ、及び第2バッテリを接続する電力回路と、電力回路を操作することにより、第1及び第2バッテリと駆動モータとの間の電力の流れ並びに第1バッテリから第2バッテリへの電力の流れを制御するマネジメントECUと、を備える。マネジメントECUは、第2バッテリの充電率に相当する第2SOCが第2SOC下限値A未満である場合、第1バッテリから出力される電力を第2バッテリに供給する電力パス制御の実行を許可するとともに、第1バッテリの第1SOCが小さくなるほど第2SOC下限値Aを大きな値に設定する。【選択図】図7


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    Title :

    POWER SUPPLY SYSTEM


    Additional title:

    電源システム


    Contributors:

    Publication date :

    2022-06-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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



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