To provide a vehicle power supply system which can execute electric path control for supplying electric power from a first battery to a second battery at suitable timing while maintaining high power efficiency of the whole vehicle.SOLUTION: A vehicle power supply system comprises: a first power line 21 to which a first inverter 3r and a first battery B1 are connected; a second power line 22 to which a second inverter 3f and a second battery B2 are connected; a voltage converter 4 which converts voltage between the power lines 21, 22; a charge/discharge control device which operates the inverters 3r, 3f and the voltage converter 4, and controls charge/discharge of the batteries B1, B2; and allowance means which allows or prohibits execution of electric path control for charging the second battery B2 with power discharged from the first battery B1. The charge/discharge control device executes said electric path control when a second SOC is a specified value or less and is allowed by the allowance means, and the allowance means does not allow execution of electric path control at the time of deceleration regeneration.SELECTED DRAWING: Figure 22

    【課題】車両全体での電力効率を高く維持しながら適切なタイミングで第1バッテリから第2バッテリへ電力を供給する電気パス制御を実行できる車両電源システムを提供すること。【解決手段】車両電源システムは、第1インバータ3r及び第1バッテリB1が接続された第1電力線21と、第2インバータ3f及び第2バッテリB2が接続された第2電力線22と、電力線21,22との間で電圧を変換する電圧変換器4と、インバータ3r,3f及び電圧変換器4を操作しバッテリB1,B2の充放電を制御する充放電制御装置と、第1バッテリB1から放電した電力で第2バッテリB2を充電する電気パス制御の実行を許可又は禁止する許可手段と、を備える。充放電制御装置は、第2SOCが所定値以下でありかつ許可手段によって許可されている場合に電気パス制御を実行し、許可手段は、減速回生時には、電気パス制御の実行を許可しない。【選択図】図22


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    Title :

    VEHICLE POWER SUPPLY SYSTEM


    Additional title:

    車両電源システム


    Contributors:

    Publication date :

    2019-10-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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