To provide a power source system of an electric vehicle capable of continuing management of charge and discharge of a first battery for supplying driving power even if the electric power supply capability of a second battery is sharply reduced.SOLUTION: A power source system (3) of an electric vehicle includes: a first battery (20) for supplying electric power to a driving motor; a battery control section (30) for managing charge and discharge of the first battery; a second battery (25) for supplying the electric power having a lower voltage than the first battery; and a control power source management section (28) having a confluent line that can draw current from the first power source line to which the electric power of the first battery is transmitted and the second power source line to which the electric power of the second battery is transmitted, and transmitting the electric power via the confluent line to the battery control section from either of the first power source line or the second power source line, according to the magnitude of the voltage from the first power source line to the confluent line and the voltage applied from the second power source line to the confluent line.SELECTED DRAWING: Figure 1
【課題】第2バッテリの電力供給能力が急激に低下しても、走行用の電力を供給する第1バッテリの充放電の管理を継続することのできる電動車両の電源システムを提供する。【解決手段】この電動車両の電源システム(3)は、走行モータに電力を供給する第1バッテリ(20)と、第1バッテリの充放電の管理を行うバッテリ制御部(30)と、第1バッテリよりも低電圧の電力を供給する第2バッテリ(25)と、第1バッテリの電力が伝送される第1電源線及び前記第2バッテリの電力が伝送される第2電源線から電流を引き込み可能な合流線を有し、第1電源線から合流線に加えられる電圧と、第2電源線から前記合流線に加えられる電圧との大小に応じて、第1電源線又は第2電源線の何れか一方から合流線を介して前記バッテリ制御部へ電力を送る制御電源管理部(28)と、を備える。【選択図】図1
POWER SOURCE SYSTEM FOR ELECTRIC VEHICLE
電動車両の電源システム
2019-07-04
Patent
Electronic Resource
Japanese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |