The invention relates to the technical field of automobile power systems, in particular to a double-motor double-planet-row coaxial power dividing hybrid power system and a driving method thereof. According to the hybrid power system, double motors and double planet rows are coaxially arranged, two sun gears are directly connected, and the two sun gears are high-speed gears, so that the torque is small under the condition of transmitting the same power, and the sizes of the planet rows can be reduced. And by adopting a planet row and parallel shaft combination mode, a larger speed ratio can be realized, the motor volume is reduced, and the power density is improved. In the power split mode, the engine, the generator and the driving motor influence the output power at the same time, the generator and the driving motor can intervene in the whole vehicle torque (driving or power generation) at any time, and the dynamic response performance is improved. Due to the fact that only two planet rows are adopted, no clutch is arranged, energy flow of the whole vehicle can be adjusted by adjusting power flow of the generator, and the advantages of being relatively simple in arrangement and low in cost are achieved.
本发明涉及汽车动力系统技术领域,具体涉及一种双电机双行星排同轴功率分流混合动力系统及其驱动方法。混合动力系统采用双电机双行星排同轴布置,且两个太阳轮直接连接,由于两个太阳轮都属于高速齿轮,传递同等功率的情况下扭矩小,所以可减小行星排尺寸。采用行星排与平行轴组合方式,能实现更大速比,减小电机体积,提高功率密度。在功率分流模式下,发动机、发电机及驱动电机三者同时影响输出功率,发电机和驱动电机都可以随时干预整车扭矩(驱动或发电),提升了动态响应性能。由于仅采用两个行星排,没有离合器,通过调节发电机功率流即可调节整车能量流,具有布置相对简单和成本低的优势。
Dual-motor dual-planet-row coaxial power dividing hybrid power system and driving method thereof
双电机双行星排同轴功率分流混合动力系统及其驱动方法
2024-04-05
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 |
Dual-motor hybrid power driving system and using method thereof
European Patent Office | 2021
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