To provide a power supply unit and a power supply system that can properly calculate internal resistance of a second storage battery without having influence on behaviour of a vehicle.SOLUTION: A power supply unit 40 is applied to a power supply system 100 that is mounted on a vehicle in which an engine 30 is automatically stopped and restarted according to a prescribed condition and is equipped with a first storage battery 11 that is used for power supply at the time of initially starting the engine and a second storage battery 12 that is used for power supply at the time of restarting the engine after the engine is automatically stopped, which are connected in parallel to a rotating electric machine 10, which comprises: a driving control part that brings the rotating electric machine into a force driving state by power supply from the second storage battery, under a low-efficiency state where efficiency of the rotating electric machine is equal to a predetermined value or less, after initially starting the engine 30; and a resistance calculation part that calculates internal resistance of the second storage battery, when the driving control part brings the rotating electric machine into the force driving state under the low efficiency state.SELECTED DRAWING: Figure 1

    【課題】車両挙動に影響及ぼすことなく第2蓄電池の内部抵抗を適正に算出できる電源装置及び電源システムを提供すること。【解決手段】所定条件に応じてエンジン30の自動停止及び再始動を行う車両に搭載され、回転電機10に対して並列接続され、エンジンの初回始動時の電力供給に使用される第1蓄電池11と、エンジンの自動停止後の再始動の際の電力供給に使用される第2蓄電池12と、を備える電源システム100に適用される電源装置40であって、エンジン30の初回始動後において、当該回転電機の効率が所定以下となる低効率状態下で、第2蓄電池からの電力供給により回転電機を力行駆動状態とする駆動制御部と、駆動制御部により低効率状態下で回転電機を力行駆動状態とした場合に、第2蓄電池の内部抵抗を算出する抵抗算出部と、を備える。【選択図】 図1


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    Titel :

    POWER SUPPLY UNIT AND POWER SUPPLY SYSTEM


    Weitere Titelangaben:

    電源装置、電源システム


    Beteiligte:

    Erscheinungsdatum :

    2020-11-12


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F02N STARTING OF COMBUSTION ENGINES , Anlassen von Brennkraftmaschinen / 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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