To accurately determine abnormality of a relay.SOLUTION: A vehicle power supply system comprises: a battery; a power converter having a smoothing capacitor; a voltage sensor; a first relay; a second relay; a third relay; and a control device which executes a start-up process electrically connecting the battery to the power converter. The start-up process includes: a first process to turn on the first relay and the third relay; a second process to monitor voltage detected with the voltage sensor and to detect a predetermined change in the detected voltage; a third process to increment a predetermined count number when the predetermined change is not detected and to turn off the first relay and the third relay; and a fourth process to determine that at least either the first relay or the third relay has abnormality when the count number reaches a predetermined upper limit.SELECTED DRAWING: Figure 2

    【課題】リレーの異常を精度よく判定する。【解決手段】車両用の電源システムは、バッテリと、平滑コンデンサを有する電力変換装置と、電圧センサと、第1リレーと、第2リレーと、第3リレーと、バッテリと電力変換装置との間を電気的に接続する起動処理を実行する制御装置と、を備える。起動処理は、第1リレー及び第3リレーをオンする第1の処理と、電圧センサによる検出電圧を監視して、検出電圧に現れる所定の変化を検出する第2の処理と、所定の変化が検出されないときは、所定のカウンタ値をインクリメントするとともに、第1リレー及び第3リレーをオフする第3の処理と、カウンタ値が所定の上限値に達したときに、第1リレー又は第3リレーの少なくとも一方に異常が生じていると判定する第4の処理と、を含む。【選択図】図2


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    Title :

    VEHICLE POWER SUPPLY SYSTEM


    Additional title:

    車両用の電源システム


    Contributors:

    Publication date :

    2023-10-23


    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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