The invention belongs to the technical field of new energy automobiles, and discloses a dual-motor two-gear speed reduction system and a new energy automobile. The double-motor two-gear speed reduction system comprises a motor set, a first shaft set, a second shaft set and a third shaft set. The motor group comprises a first motor and a second motor which are coaxially arranged; the first shaft set comprises a first left half shaft, a first right half shaft, a speed reducing mechanism and a gear shifting mechanism. The second shaft group is in transmission connection with the first left half shaft for primary speed reduction; and the third shaft group and the second shaft group are in transmission connection for secondary speed reduction, and power is output to the wheel end structure. According to the dual-motor two-gear speed reduction system, by switching the gear shifting mechanism, the second motor has a two-gear power output mode to reduce the speed of the first left half shaft, the loss of wheel end driving torque caused by the second motor in the whole gear shifting process is compensated by the first motor, and therefore power-interruption-free gear shifting is achieved; and smooth gear shifting can be achieved by adjusting the speed through the second motor.

    本发明属于新能源汽车技术领域,公开了一种双电机两挡减速系统及新能源汽车。双电机两挡减速系统包括电机组、第一轴组、第二轴组和第三轴组。电机组包括同轴设置的第一电机和第二电机;第一轴组包括第一左半轴、第一右半轴、减速机构和换挡机构;第二轴组与第一左半轴传动连接进行一级减速;第三轴组与第二轴组传动连接进行二级减速,并将动力输出至轮端结构。该双电机两挡减速系统通过切换换挡机构,使第二电机具备两挡动力输出方式对第一左半轴进行降速,第二电机在整个换挡过程中引起的轮端驱动力矩的损失,由第一电机进行补偿,从而实现动力无中断换挡,且在换挡时,还可通过第二电机进行调速实现平顺的换挡。


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    Title :

    Dual-motor two-gear speed reduction system and new energy automobile


    Additional title:

    一种双电机两挡减速系统及新能源汽车


    Contributors:
    XU KE (author) / WANG JUNHAO (author) / JIANG LEI (author) / HUANG CHAO (author) / WANG ZHEN (author) / SHI CHUNXUAN (author)

    Publication date :

    2022-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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