PROBLEM TO BE SOLVED: To maintain power feeding to a load even when a ground fault occurs in one of a plurality of power feeding paths.SOLUTION: A relay module 5 for an on-vehicle power supply includes power supply lines 61 to 63, and a main relay 52 and a sub relay 53 having different current capacity from each other. The power supply line 61 is connected to a main battery 1, the power supply line 62 is connected to a sub battery 2, and the power supply line 63 is connected to an important load 83, respectively. The main relay 52 is provided between the power supply lines 61, 63, and the sub relay 53 is connected between the power supply lines 62, 63, respectively. The main relay 52 is non-conductive when a ground fault occurs in the power supply line 61, and is conductive when a ground fault occurs in the power supply line 62. The sub relay 53 is non-conductive when the ground fault occurs in the power supply line 62, and is conductive when the ground fault occurs in the power supply line 61. When there is no abnormality in both power supply lines 61, 62, one having larger current capacity between the main relay 52 and the sub relay 53 is conductive, and the other is non-conductive.SELECTED DRAWING: Figure 1
【課題】複数の給電用の経路の一つにおいて地絡が発生しても、負荷への給電を維持する。【解決手段】車載電源用のリレーモジュール5は、電源線61〜63と、相互に電流容量が異なるメインリレー52及びサブリレー53とを備える。電源線61はメインバッテリ1に、電源線62はサブバッテリ2に、電源線63は重要負荷83に、それぞれ接続される。メインリレー52は電源線61,63の間に、サブリレー53は電源線62,63の間に、それぞれ設けられる。メインリレー52は、電源線61に地絡が発生したときに非導通であり、電源線62に地絡が発生したときに導通する。サブリレー53は、電源線62に地絡が発生したときに非導通であり、電源線61に地絡が発生したときに導通する。電源線61,62のいずれにも異常がない場合にはメインリレー52及びサブリレー53のうち電流容量が大きい一方が導通し、他方が非導通である。【選択図】図1
SWITCH DEVICE FOR ON-VEHICLE POWER SUPPLY AND POWER SUPPLY DEVICE
車載電源用のスイッチ装置及び電源装置
2017-08-17
Patent
Elektronische Ressource
Japanisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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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