PROBLEM TO BE SOLVED: To enhance reliability of a vehicular power supply device.SOLUTION: A vehicular power supply device includes: a starter generator 16 coupled to an engine; a lead-acid battery 31 connected to the starter generator 16; a lithium-ion battery 32 connected to the starter generator 16 in parallel with the lead-acid battery 31; a switch SW1 switched between a conduction state where the starter generator 16 and the lead-acid battery 31 are connected with each other and a shut-off state where these batteries are separated from each other; a switch SW2 switched between a conduction state where the starter generator 16 and the lithium-ion battery 32 are connected with each other and a shut-off state where these batteries are separated from each other; a switch control section 71 for controlling the switch SW1 and the switch SW2; and a battery determination section 72 for determining whether an abnormal state where the lead-acid battery 31 cannot normally discharge occurs. The switch control section 71 controls the switch SW1 and the switch SW2 to the conduction state when the lead-acid battery 31 is determined to be in an abnormal state.SELECTED DRAWING: Figure 7

    【課題】車両用電源装置の信頼性を高める。【解決手段】エンジンに連結されるスタータジェネレータ16と、スタータジェネレータ16に接続される鉛バッテリ31と、鉛バッテリ31と並列にスタータジェネレータ16に接続されるリチウムイオンバッテリ32と、スタータジェネレータ16と鉛バッテリ31とを接続する導通状態と切り離す遮断状態とに切り替えられるスイッチSW1と、スタータジェネレータ16とリチウムイオンバッテリ32とを接続する導通状態と切り離す遮断状態とに切り替えられるスイッチSW2と、スイッチSW1およびスイッチSW2を制御するスイッチ制御部71と、鉛バッテリ31が正常に放電できない異常状態であるか否かを判定するバッテリ判定部72と、を有し、スイッチ制御部71は、鉛バッテリ31が異常状態であると判定された場合に、スイッチSW1およびスイッチSW2を導通状態に制御する。【選択図】図7


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    Title :

    VEHICULAR POWER SUPPLY DEVICE


    Additional title:

    車両用電源装置


    Contributors:

    Publication date :

    2018-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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