PROBLEM TO BE SOLVED: To provide a vehicular power supply device capable of suppressing degradation of a sub-power supply, while realizing redundancy of power supplied to a load part by the sub-power supply.SOLUTION: A vehicular power supply device 1 comprises a main power supply 10, a sub-power supply 40, a switching circuit 50, a redundant circuit 60, and a control part 80. The sub-power supply 40 is connected to a main power supply 10 and a required stable load part 32, and voltage of power supplied to the required stable load part 32 is lower than another voltage of power supplied to the required stable load part 32 from the main power supply 10. The switching circuit 50 provided between the main power supply 10 and the sub-power supply 40 switches on and off electrical connection between the main power supply 10 and the sub-power supply 40. The redundant circuit 60 as a circuit that is different from the switching circuit 50 comprises a diode 61 between the sub-power supply 40 and the required stable load part 32 and supplies power to the required stable load part 32 from the sub-power supply 40 via the diode 61. The control part 80 connected to the switching circuit 50 controls the switching circuit 50.SELECTED DRAWING: Figure 1
【課題】サブ電源により負荷部への電力供給の冗長性を実現した上で、サブ電源の劣化を抑制することができる車両用電源装置を提供する。【解決手段】車両用電源装置1は、主電源10と、サブ電源40と、切替回路50と、冗長回路60と、制御部80とを備える。サブ電源40は、主電源10及び要安定負荷部32に接続され、要安定負荷部32に供給する電力の電圧が主電源10から要安定負荷部32に供給される電力の電圧より低い。切替回路50は、主電源10とサブ電源40との間に設けられ、主電源10とサブ電源40との電気的な接続をオン又はオフに切り替える。冗長回路60は、切替回路50とは異なる回路であって、サブ電源40と要安定負荷部32との間にダイオード61を有し、当該ダイオード61を介してサブ電源40から要安定負荷部32に電力が供給される。制御部80は、切替回路50に接続され、当該切替回路50を制御する。【選択図】図1
VEHICULAR POWER SUPPLY DEVICE
車両用電源装置
15.11.2018
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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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 / 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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