A 2-speed AMT electric drive axle for light commercial vehicles

By using 2-speed AMT electric drive axle in pure electric light commercial vehicles and using two-stage cylindrical gear reduction and automatic transmission technology, the problem that a single-speed fixed speed ratio reducer cannot take into account the vehicle's power and economy, and achieve higher power output and range.

CN119749227APending Publication Date: 2025-04-04FANGSHENG AXLE LIUZHOU
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Patent Information

Application Number
CN202411941698.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

The existing pure electric light commercial vehicle electric drive axles adopt a single-speed fixed speed ratio reducer, which cannot effectively utilize the motor's efficient working area, resulting in the vehicle being unable to take into account the maximum speed and maximum climbing requirements, and the range is small, making it difficult to take into account the power and economy of the entire vehicle.

Method used

The 2-speed AMT electric drive axle is adopted, and the reducer is a two-stage cylindrical gear to reduce the speed. The shifting mechanism is integrated on the input shaft. Through the two-stage deceleration and automatic speed change technology, the adaptability and efficiency of power output are achieved.

Benefits of technology

Through the 2-speed AMT electric drive axle, the vehicle's power and economy are improved, and it can provide higher vehicle speed, acceleration and hill climbing capabilities under various operating conditions, extend the vehicle's range, and reduce the energy consumption and cost of the entire vehicle.

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Abstract

The present invention relates to a 2-speed AMT electric drive axle for a light commercial vehicle. The reducer is a 2-speed AMT reducer. The reducer includes an input shaft assembly, a second shaft assembly and a reducer housing. The input shaft assembly and the second shaft assembly are respectively arranged in the reducer housing. The input shaft assembly is connected to a motor, the second shaft assembly is connected to the input shaft assembly, and the second shaft assembly is connected to a differential. The input shaft assembly is a shift shaft assembly, which includes an input shaft, driving teeth of two gears and a shift sleeve. The second shaft assembly includes passive teeth of two gears, a secondary driving gear shaft and a secondary driving bevel gear. The motor power is input from the reducer input shaft, and after two-stage reduction, it is transmitted from the differential to the left and right half shafts respectively, until the wheel ends on both sides of the drive axle. The reduction box is a two-stage reduction structure, the shift mechanism is concentrated on the input shaft, the structure is compact, the axial space occupied is small, it is convenient for the chassis layout of the whole vehicle, and the transmission efficiency is high.
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