The invention provides a reverse pre-charging current-limiting vehicle-mounted power supply device, a control method and an electric vehicle, the reverse pre-charging current-limiting vehicle-mounted power supply device comprises a primary side capacitor, a direct current conversion circuit, a filter inductor, an ORING switch tube and an independent power supply, one output end of the DC conversion circuit is used for being connected with one end of the low-voltage battery through the filter inductor and the ORING switch tube in sequence, and the other output end of the DC conversion circuit is used for being connected with the other end of the low-voltage battery. The independent power supply is used for outputting driving voltage to the ORING switch tube so as to drive the ORING switch tube. In the process that the direct current conversion circuit is used for receiving power supplied by the low-voltage battery through the ORING switch tube and reversely charging the primary side capacitor, the independent power supply is used for adjusting the driving voltage so as to adjust the current passing through the ORING switch tube, and therefore the cost and the size of the vehicle-mounted power supply device are reduced while the design complexity is not increased.
本申请提供了一种反向预充限流的车载供电装置、控制方法和电动汽车,包括原边电容、直流变换电路、滤波电感、ORING开关管以及独立电源,其中,原边电容的两端分别用于连接直流变换电路的两个输入端,直流变换电路的一个输出端用于依次通过滤波电感和ORING开关管连接低压电池一端、另一个输出端用于连接该低压电池的另一端。该独立电源用于向ORING开关管输出驱动电压以驱动ORING开关管。在直流变换电路用于通过ORING开关管接收低压电池供电并为原边电容反向充电的过程中,独立电源用于调整驱动电压的大小以调整通过ORING开关管的电流大小,从而在不增加设计复杂度的同时,减小车载供电装置的成本和体积。
Reverse pre-charging current-limiting vehicle-mounted power supply device, control method and electric vehicle
反向预充限流的车载供电装置、控制方法和电动汽车
2024-05-31
Patent
Elektronische Ressource
Chinesisch
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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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