The invention relates to a dual-motor driving system, a control method and a vehicle. The system comprises a first motor, a second motor, a first inverter, a second inverter, a controller and a battery, and the controller is used for controlling the second inverter to charge and discharge the second motor and the battery in a first preset state so as to heat the battery, and controlling the first inverter to convert the three-phase current generated by the first motor into direct current so as to charge the battery. Therefore, the battery can be charged when the battery is self-heated, the temperature of the battery is well maintained, the electrolyte activity and electrochemical reaction rate of the lithium ion battery are improved, the charging efficiency is improved, the service life of the battery is prolonged, the self-heating energy loss of the battery is small, and the heating efficiency is high. Besides, the motor on the vehicle is used for heating the battery, reuse of the motor can be achieved, the motor can achieve different functions according to different requirements, the cost, the size and the weight of the whole vehicle can be reduced, the production difficulty can be reduced, and the reliability of the dual-motor driving system can be improved.
本公开涉及一种双电机驱动系统、控制方法及车辆。系统包括:第一电机、第二电机、第一逆变器、第二逆变器、控制器及电池;控制器用于在第一预设状态下,控制第二逆变器使第二电机与电池进行充放电,以对电池进行加热,控制第一逆变器使第一电机产生的三相电流转化为直流电,以对电池充电。这样就能在电池自加热时实现电池的充电,较好维持电池温度,提升锂离子电池电解液活性和电化学反应速率,提升充电效率,延长电池寿命,且电池自加热能量损耗小、加热效率高。另外,利用车辆上的电机对电池加热,可实现电机的复用,使电机能够根据不同的需要实现不同功能,不仅能降低整车成本、体积及重量,还可降低生产制成难度,提升双电机驱动系统可靠性。
Dual-motor driving system, control method and vehicle
双电机驱动系统、控制方法及车辆
2023-10-24
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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