The invention relates to a dual-motor electric vehicle driving system based on planetary gears, and belongs to the technical field of pure electric vehicle driving. The system comprises a first motor,a first motor brake, a second motor, a second motor brake and a planetary gear power coupling mechanism. When the vehicle runs at low power, the driving system is in a first driving mode or a seconddriving mode; in the first driving mode, when the first motor works and the second motor brake is locked, the first motor drives the vehicle through a fixed transmission ratio; in the second driving mode, when the first motor brake is locked and the second motor works, the second motor drives the vehicle through a fixed transmission ratio; when the vehicle runs at high power, the driving system isin a third driving mode; when both the first motor brake and the second motor brake are released and the first motor and the second motor work simultaneously, the two motors are driven at a variabletransmission ratio and are coupled through a rotating speed. The system can improve motor efficiency and increase the driving range of the electric vehicle.
本发明涉及一种基于行星齿轮的双电机电动汽车驱动系统,属于纯电动汽车驱动技术领域。包括第一电机、第一电机制动器、第二电机、第二电机制动器、行星齿轮动力耦合机构。当车辆小功率运行时,驱动系统处于第一驱动模式或第二驱动模式;第一驱动模式:当第一电机工作,第二电机制动器抱死时,第一电机通过固定的传动比驱动车辆;第二驱动模式:当第一电机制动器抱死,第二电机工作时,第二电机通过固定的传动比驱动车辆;当车辆大功率运行时,驱动系统处于第三驱动模式;即当第一电机制动器和第二电机制动器均释放,第一电机和第二电机同时工作时,两电机以变化的传动比驱动,且通过转速耦合。本发明有利于提高电机效率,增加电动汽车的续驶里程。
Dual-motor electric vehicle driving system based on planetary gear
一种基于行星齿轮的双电机电动汽车驱动系统
28.08.2020
Patent
Elektronische Ressource
Chinesisch
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