The invention relates to a fault processing method for a vehicle-mounted charger of an electric vehicle, which belongs to the technical field of electric vehicles and comprises the following steps of: performing fault diagnosis on the vehicle-mounted charger to determine a fault reason; for vehicles urgently needing fault processing in the market, software optimization is carried out on the starting process of a vehicle-mounted charger and the starting process of PFC circuit software; for market stock vehicles and vehicles to be produced, software optimization is carried out on the starting process of a vehicle-mounted charger and the software starting process of the PFC circuit, and a resistor of a front-end driving circuit of an MOS tube in the PFC circuit is replaced with a resistor with a larger resistance value. According to the method, software optimization and hardware improvement are complementary, the time advantage of the software optimization is used for supplementing the time short plate of the hardware improvement process, and compared with pure hardware improvement, the software optimization and the hardware improvement are matched with each other, so that the problem solving time is greatly shortened on the premise that the fault problem is effectively solved, and the problem solving efficiency is improved. And meanwhile, the after-sales cost is reduced.
本发明涉及一种电动汽车车载充电机故障处理方法,属于电动汽车技术领域,包括步骤:对车载充电机进行故障诊断,确定故障原因;针对市场急需故障处理的车辆,分别对车载充电机启动过程和PFC电路软件启动过程进行软件优化;针对市场存量车辆和待生产车辆,不仅分别对车载充电机启动过程和PFC电路软件启动过程进行软件优化,还将PFC电路中MOS管前端驱动电路电阻更换为阻值更大的电阻。本发明通过软件优化和硬件改进,两种方案互补,以软件优化的时间优势,补齐硬件改进过程的时间短板,相比于单纯的硬件改进,采用软件优化与硬件改进相互配合,在保证故障问题得到有效解决的前提下,大大缩短了解决问题的时间,同时减少了售后成本。
Fault processing method for vehicle-mounted charger of electric vehicle
一种电动汽车车载充电机故障处理方法
2023-12-26
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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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