A multi-gear power split hybrid power transmission system and vehicle

By using a multi-speed power split hybrid transmission system, which utilizes a planetary gear mechanism to work in conjunction with the electric motor, the problems of power interruption during gear shifts and structural complexity in tractor power transmission systems are solved. This achieves smooth gear shift control and low fuel consumption, improving driving comfort and safety.

CN224714820UActive Publication Date: 2026-09-04ZHIXIN CONTROL SYST CO LTD
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Patent Information

Application Number
CN202522244306.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-23
Publication Date
2026-09-04
Estimated Expiration
2035-10-23

AI Technical Summary

Technical Problem

Existing tractor power transmission systems suffer from problems such as power interruption during gear shifting, complex structure, and high cost.

Method used

The system employs a multi-speed power split hybrid power transmission system, including an electronic continuously variable transmission and a dual power coupling mechanism. Through the planetary gear mechanism and the motor working together, it provides multiple independent transmission paths. The second motor provides power compensation in real time during gear shifting, achieving smooth shift control.

Benefits of technology

It significantly reduces driving jerking, improves transmission smoothness, reduces fuel consumption, maintains a compact structure and reasonable layout, and enhances driving comfort and safety.

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Abstract

The application relates to a multi-gear power split hybrid transmission system and a vehicle, which comprises an electronic continuously variable transmission, a planetary gear mechanism composed of a sun gear, a planet carrier and a ring gear, an engine in transmission connection with the planet carrier, a first motor in transmission connection with the sun gear, a ring gear connecting shaft in connection with the ring gear, a double power coupling mechanism comprising an output shaft and an intermediate shaft, a second motor in transmission connection with the intermediate shaft, a first gear shifting mechanism and a second gear shifting mechanism connected between the ring gear connecting shaft and the output shaft and independent of each other, and a third gear shifting mechanism connected between the output shaft and the intermediate shaft. The transmission system of the application is dynamically switched through different transmission paths, power is mutually compensated in the gear shifting stage, the driving jerk is significantly reduced, and the transmission fluency is improved. The engine and the motor can be fully utilized in the high-efficiency working area, different load requirements can be met through the multi-gear design, the vehicle fuel consumption is effectively reduced, and the structure is compact and the layout is reasonable.
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