To inhibit a charging relay from being erroneously diagnosed as being welded due to the fact that a DC power supply facility is a specific DC power supply facility.SOLUTION: An ECU of a vehicle performs welding diagnosis processing of charging relays 71 and 72 while SMRs are opened. The welding diagnosis processing is performed while power is supplied from a DC power supply facility to the vehicle. The welding diagnosis processing includes two-electrode welding diagnosis processing and single-electrode welding diagnosis processing. The ECU outputs an output command to the DC power supply facility to perform the two-electrode welding diagnosis processing. When it is determined that both of the charging relays 71 and 72 are not welded in the two-electrode welding diagnosis processing, the ECU performs the single-electrode welding diagnosis processing to diagnose whether welding does not occur in each of the charging relays 71 and 72.SELECTED DRAWING: Figure 2
【課題】DC給電設備が特定DC給電設備であることに起因して、充電リレーが溶着していると誤診断されることを抑制することである。【解決手段】車両のECUは、SMRを開放した状態で充電リレー71,72の溶着診断処理を実行する。溶着診断処理は、DC給電設備から車両に電力が供給されている状態で実行される。溶着診断処理には、両極溶着診断処理および片極溶着診断処理が含まれる。ECUは、DC給電設備に出力指令を出力して両極溶着診断処理を実行する。両極溶着診断処理において、充電リレー71,72の両方が溶着していないと判定すると、ECUは、片極溶着診断処理を実行して、充電リレー71,72のそれぞれについて溶着が発生していないことを診断する。【選択図】図2
VEHICLE AND WELDING DIAGNOSIS METHOD
車両および溶着診断方法
20.08.2020
Patent
Elektronische Ressource
Japanisch
IPC: | 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 / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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