The invention discloses a double-source oil pump control method and system, and relates to the technical field of new energy automobiles. Under the condition that an oil pump works normally, whether a CAN bus of a whole automobile is normal or not is judged; under the condition that the CAN is normal, judging whether a high-voltage system part is normal or not, and determining whether high-voltage power failure is needed or not; under the condition that the CAN is abnormal, whether the low-voltage signal port receives a high level or not is judged; and when the high-voltage system is partially abnormal and has an unrecoverable fault and the vehicle speed of the whole vehicle is greater than a set value or the low-voltage signal port receives a high level, low-voltage enabling is carried out. According to the invention, a hierarchical energy distribution optimization strategy is provided, through control strategy optimization, the time delay of switching of the high-pressure oil pump and the low-pressure oil pump is greatly reduced, and the safety during steering is enhanced.
本发明公开了一种双源油泵控制方法及系统,涉及新能源汽车技术领域,油泵正常工作情况下,判断整车CAN总线是否正常;在CAN正常情况下,判断高压系统部分是否正常,并确定是否需要高压断电;在CAN异常情况下,判断低压信号端口是否接收到高电平;在高压系统部分异常且为不可恢复故障、同时整车车速大于设定值时,或者低压信号端口接收到高电平时,低压使能。本发明提供层级分明的能源分配优化策略,通过控制策略优化,大大减少高低压油泵切换的时间延时、增强转向时的安全性。
Double-source oil pump control method and system
一种双源油泵控制方法及系统
2022-12-30
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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