3-gear double-clutch automatic gearbox for electromobile

Abstract

The invention discloses a 3-gear double-clutch automatic gearbox for an electromobile. The 3-gear double-clutch automatic gearbox comprises a clutch K1, a clutch K2, a synchronizer, an input shaft anda second shaft parallel to the input shaft. The clutch K1 and the clutch K2 are arranged at the two ends of the input shaft. The clutch K1 transmits power to the second shaft through a first-gear gear pair or a third-gear gear pair. The clutch K2 transmits power to the second shaft through a second-gear gear pair. The synchronizer is arranged on the second shaft, and located between the first-gear gear pair and the third-gear gear pair. By means of the three-gear design, a vehicle can obtain large torque when provided with a low-power motor, and the technical problem that the second gear of atwo-gear gearbox is powerless, the speed of the first gear is not enough, and the moment of force of the second gear is not enough is solved. The beneficial effects of being simple in structure and low in process cost are achieved. Balance between the dynamic property and the economical efficiency of the pure electromobile is achieved, the total power of a motor selected by the electromobile andthe load requirement of a motor system are reduced, and then the discharge rate of a battery is reduced.

Description

Technical field [0001] The invention relates to a dual-clutch automatic transmission, in particular to a 3-speed dual-clutch automatic transmission for electric vehicles. Background technique [0002] Pure electric vehicles have the advantages of low noise, zero emissions, easy operation and maintenance, etc., and their prospects are widely optimistic due to their relatively small environmental impact compared to traditional vehicles. [0003] Because the drive motor of pure electric vehicles has good speed regulation characteristics, the power transmission system of pure electric vehicles in the industry mostly adopts single-speed transmission or two-speed transmission. However, it is used in electric vehicles with large torque requirements and low speed. For example, when used in passenger cars or trucks with a load of 8t to 14t, the single-speed transmission cannot meet the load capacity and maximum speed at the same time. At present, the domestic mainstream 8t-14t electric bus ...

AI Technical Summary

Problems solved by technology

It can be seen that this solution includes the first input shaft, the second input shaft, the output shaft and the auxiliary shaft, the structure is relatively complicated, and the process cost is relatively high. In addition, in this solution, the first input shaft penetrates into the In the second input shaft, odd-even dual clutches are used, resulting in a longer and thinner shaft, which is difficult to load large torque, increases the rigidity requirements and processing difficulty of the overall shaft, and cannot guarantee the feasibility of the process and the feasibility of industrialization.

Images