PROBLEM TO BE SOLVED: To accurately discriminate the cause of output abnormality of a voltage sensor used for detecting a voltage supplied to a charge relay from an external charge device when the output abnormality is detected.SOLUTION: A PMECU of a hybrid vehicle determines that a failure of the relay terminal voltage sensor has occurred (S220-S250) in a case where a physical amount difference Δ being a difference between an inter-terminal voltage VB of a battery and a supply voltage Vs of an external charge device is within a given range when output abnormality of a relay terminal voltage sensor is detected during execution of external charging, or determines that abnormality has occurred to a charging line from a power reception connector to the battery (S290) in a case where the physical amount difference Δ is outside the given range, with the supply voltage Vs exceeding a voltage threshold Vref, or abnormality has occurred to the external charge device (S300) in a case where the physical amount difference Δ is outside the given range, with the supply voltage Vs being equal to or less than the voltage threshold Vref.SELECTED DRAWING: Figure 3
【課題】外部充電装置から充電リレーに供給される電圧を検出する電圧センサの出力異常が検知された際に、出力異常の要因を精度よく判別する。【解決手段】ハイブリッド車両のPMECUは、外部充電の実行中にリレー端電圧センサの出力異常が検知された際に、バッテリの端子間電圧VBと外部充電装置の供給電圧Vsとの差である物理量差Δが所定範囲内に含まれる場合、リレー端電圧センサの故障が発生したと判断しS220〜S250、物理量差Δが所定範囲内に含まれておらず、かつ、供給電圧Vsが電圧閾値Vrefを上回っている場合、受電コネクタからバッテリまでの充電ラインの異常が発生したと判断しS290、物理量差Δが所定範囲内に含まれておらず、かつ、供給電圧Vsが電圧閾値Vref以下である場合、外部充電装置の異常が発生したと判断するS300。【選択図】図3
VEHICLE AND FAILURE DIAGNOSIS METHOD FOR VOLTAGE SENSOR
車両および電圧センサの故障診断方法
30.05.2016
Patent
Elektronische Ressource
Japanisch
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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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