The invention relates to a double-planet-row series-parallel dual-mode transmission system, and belongs to the field of new energy automobiles. The system comprises a power coupling mechanism, an engine, a torsion damper, a first motor, a second motor, a power battery, an inverter, an assembly controller and a controller local area network, wherein the power coupling mechanism comprises a speed reducer, a first planet row, a second planet row, a clutch and a brake. The assembly controller comprises an engine control unit, a whole vehicle control unit, a motor control unit and a power battery control unit. By controlling the states of the clutch and the brake, an input type power dividing mode and a composite type power dividing mode which are suitable for different speed ratio intervals can be achieved, and the problem that the transmission efficiency is reduced due to the fact that power circulation occurs in the input type power dividing mode during high-speed driving is solved through dual-mode switching; and the power transmission system can maintain high transmission efficiency in a wider speed ratio interval. The production cost is reduced, and the working efficiency of the whole vehicle is improved.
本发明涉及一种双行星排混联双模传动系统,属于新能源汽车领域。该系统包括动力耦合机构、发动机、扭转减振器、第一电机、第二电机、动力电池,逆变器、总成控制器和控制器局域网,其中动力耦合机构包括减速器、第一行星排、第二行星排、离合器和制动器;总成控制器包括发动机控制单元、整车控制单元、电机控制单元和动力电池控制单元。通过控制离合器和制动器的状态可以实现两种适用于不同速比区间的输入型功率分流模式和复合型功率分流模式,双模的切换解决了输入型功率分流模式在高速行驶时发生功率循环而导致传动效率下降的问题,使动力传动系统在更广的速比区间内维持高的传动效率。本发明降低了生产成本,提高了整车的工作效率。
Double-planet-row series-parallel dual-mode transmission system
一种双行星排混联双模传动系统
2021-04-16
Patent
Electronic Resource
Chinese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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