PROBLEM TO BE SOLVED: To reduce the cost of a vehicular electric power supply device that comprises a first power storage body and a second power storage body.SOLUTION: A vehicular electric power supply device 10 mounted to a vehicle has: a motor generator 16 connected to an engine; a lithium-ion battery 27 connected to the motor generator 16; a lead battery 28 that is connected to the motor generator 16 in parallel with the lithium-ion battery 27 and is lower in terminal voltage than the lithium-ion battery 27; and a charge and discharge controller 51 that controls generation voltage of the motor generator 16 and controls charging and discharging of the lithium-ion battery 27. The charge and discharge controller 51 supplies electric power from the motor generator 16 to the lithium-ion battery 27 by increasing the generation voltage higher than the terminal voltage of the lithium-ion battery 27 and supplies electric power from the lithium-ion battery 27 to an instantaneous voltage drop protection load 33 by decreasing the generation voltage lower than the terminal voltage of the lithium-ion battery 27.SELECTED DRAWING: Figure 2

    【課題】第1蓄電体と第2蓄電体とを備えた車両用電源装置のコストを下げる。【解決手段】車両に搭載される車両用電源装置10であって、エンジンに接続されるモータジェネレータ16と、モータジェネレータ16に接続されるリチウムイオンバッテリ27と、リチウムイオンバッテリ27と並列にモータジェネレータ16に接続され、リチウムイオンバッテリ27よりも端子電圧の低い鉛バッテリ28と、モータジェネレータ16の発電電圧を制御し、リチウムイオンバッテリ27の充放電を制御する充放電コントローラ51と、を有し、充放電コントローラ51は、発電電圧をリチウムイオンバッテリ27の端子電圧よりも上げることにより、モータジェネレータ16からリチウムイオンバッテリ27に電力を供給し、発電電圧をリチウムイオンバッテリ27の端子電圧よりも下げることにより、リチウムイオンバッテリ27から瞬低保護負荷33に電力を供給する。【選択図】図2


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    Title :

    VEHICULAR ELECTRIC POWER SUPPLY DEVICE


    Additional title:

    車両用電源装置


    Contributors:

    Publication date :

    2016-11-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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 / 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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