To provide a vehicular power supply system capable of lowering the voltage of a main circuit to or lower than a specified value within a specified time even in a case where the voltage of the main circuit increases again before the vehicle is stopped after its collision.SOLUTION: A vehicular power supply system includes: a high-voltage battery; a drive motor connected to a drive wheel; a high-voltage circuit for exchanging power between the high-voltage battery and the drive motor; a secondary-side voltage sensor for obtaining a secondary-side voltage V2 that is a voltage at the high-voltage circuit; and a system ECU for executing discharge control for lowering the secondary-side voltage V2 by operating the high-voltage circuit in a case where a discharge start condition is established. After the discharge start condition is established, the system ECU starts the discharge control after executing standby control processing for a given period of time in which the start of the discharge control processing is held standby.SELECTED DRAWING: Figure 11

    【課題】車両衝突後、車両が停止するまでの間に主回路の電圧が再上昇した場合であっても、主回路の電圧を規定時間内に規定電圧以下まで低下させることができる車両の電源システムを提供すること。【解決手段】車両の電源システムは、高電圧バッテリと、駆動輪に連結された駆動モータと、高電圧バッテリと駆動モータとの間で電力の授受を行う高電圧回路と、高電圧回路における電圧である2次側電圧V2を取得する2次側電圧センサと、放電開始条件が成立した場合に、高電圧回路を操作し2次側電圧V2を低下させる放電制御を実行するシステムECUと、を備える。システムECUは、放電開始条件が成立した後、放電制御処理の開始を待機する待機制御処理を所定時間実行した後に放電制御処理を開始する。【選択図】図11


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    Title :

    VEHICULAR POWER SUPPLY SYSTEM


    Additional title:

    車両の電源システム


    Contributors:

    Publication date :

    2020-11-05


    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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