The invention discloses a new energy vehicle current anomaly protection control method and a high-voltage loop, and belongs to the field of high-voltage loop anomaly protection.The new energy vehicle current anomaly protection control method is characterized in that an excitation fuse is arranged on the high-voltage loop in series; detecting current on the high-voltage loop, judging whether abnormal current occurs or not, judging the state of the vehicle when the abnormal current occurs, and controlling the excitation fuse to be directly switched on and off if the vehicle is in a charging state or the speed of the vehicle is less than or equal to Vkm/h; when the vehicle speed is larger than Vkm/h, the output power of a motor is controlled to be reduced to 0, meanwhile, vehicle steering configuration information is recognized, and if the vehicle is a double-source steering system, the vehicle is switched to a low-pressure steering state, and a fuse is controlled to be switched on and off; if the system is a non-double-source steering system, the excitation fuse is controlled to be switched on and off when the vehicle speed is smaller than or equal to Vkm/h. According to the method, the high-voltage loop can be quickly cut off to protect the load when the abnormal current occurs, and extra potential safety hazards caused by out-of-control of the steering system of the new energy vehicle are avoided.
本发明公开了一种新能源车辆电流异常保护控制方法及高压回路,属于高压回路异常保护领域,一种新能源车辆电流异常保护控制方法,高压回路上串设有激励熔断器;检测高压回路上的电流,判断是否出现异常电流,当出现异常电流时判断车辆所处状态,若车辆处于充电状态或车辆车速小于等于Vkm/h时,控制激励熔断器直接开断;当车速大于Vkm/h时,则控制电机输出功率降为0,同时识别车辆转向的配置信息,若为双源转向系统,则切换至低压转向状态并控制激励熔断器开断;若为非双源转向系统,则等待车速小于等于Vkm/h时控制激励熔断器开断。该方法保证在出现异常电流时即可以快速切断高压回路保护负载,又不会因新能源车辆的转向系统的失控带来额外的安全隐患。
New energy vehicle current abnormity protection control method and high-voltage loop
一种新能源车辆电流异常保护控制方法及高压回路
2023-09-19
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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