The invention discloses a vehicle-mounted redundant power supply system and a control method thereof.According to the vehicle-mounted redundant power supply system, on-off of a first step-down DCDC circuit and a second step-down DCDC circuit is controlled according to the whole vehicle load demand power of a vehicle, whether the second step-down DCDC circuit is connected with a V2L module or not is controlled, and related alarm information is reported to a VCU module; therefore, the high-voltage direct-current power transmission of the power battery charges the storage battery or discharges the V2L module. Therefore, according to the embodiment of the invention, the output of the two DCDC circuits can be adjusted according to the load of the whole vehicle, one DCDC circuit can still supply power to the low-voltage load of the whole vehicle after having a fault, V2L discharge in the vehicle is realized, and the driving safety and the power supply conversion efficiency are improved; and after the OBC of the vehicle is removed, the DCDC primary side power conversion circuit can be fully utilized, the V2L function in the vehicle is realized, and the resource utilization rate is high.
本发明公开了一种车载冗余供电系统及其控制方法,通过采用车载冗余供电系统,根据车辆的整车负载需求功率,控制第一降压DCDC电路和第二降压DCDC电路通断,以及控制控制所述第二降压DCDC电路是否接通V2L模块,上报相关的告警信息给VCU模块,以使动力电池的高压直流输电为所述蓄电池进行充电或者为所述V2L模块放电。因此,本发明实施例能够根据整车负载调整两路DCDC的输出,其中一路DCDC有故障后仍能保证给整车低压负载供电,兼具车内V2L放电,提高行车安全和供电转换效率;且车辆去掉OBC后,可充分利用DCDC原边功率变换电路,实现车内V2L的功能,资源利用率高。
Vehicle-mounted redundant power supply system and control method thereof
一种车载冗余供电系统及其控制方法
2023-12-05
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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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