Hybrid-based three-speed transmission drive system

Abstract

The invention discloses a hybrid-based three-speed transmission drive system, including a differential. A main reduction gear of the differential is drivable by a hybrid drive assembly including a first input shaft, a second input shaft and a first output shaft parallel to each other, the first input shaft being connected to the engine and the other end being connected to the second input shaft. The second input shaft is connected with the auxiliary motor, the clutch is fixedly connected with the second hollow shaft sleeved on the second input shaft, and the second hollow shaft is connected with the first hollow shaft. The first hollow shaft is connected with the first output shaft through a gear assembly, and the first output shaft is provided with a first connecting gear. The system alsoincludes a second output shaft driven by the first hollow shaft through a gear assembly, and the second output shaft is provided with a second connected gear. The system is mainly embodied in that: the structure is simple, the design is exquisite, parallel hybrid operation can be realized in all three gears, dynamic performance is good, fuel saving performance is good, and driving comfort is greatly improved.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a driving system of a three-speed transmission based on hybrid electric vehicles. Background technique [0002] Faced with the pressure of energy and environmental protection, many countries have introduced relevant policies to encourage the development and promotion of hybrid vehicles and related supporting systems. A hybrid electric vehicle refers to a vehicle jointly driven by two or more different types of power sources, and a hybrid electric vehicle requires at least one power source to provide electric energy. Gasoline-electric hybrid vehicles are the first to accept development and are currently the most widely developed and mature hybrid vehicles. They are based on traditional fuel vehicles that use engines, adding electric motors as the second driving force, and properly selecting them according to different working conditions. drive mode. [0003] Pub...

AI Technical Summary

Problems solved by technology

[0004] The power system of the above-mentioned hybrid electric vehicle has the following defects: 1. The second motor is driven in two gears, and the engine is driven in three gears. As a result, in the hybrid mode, the engine and the second motor cannot satisfy all the gears, and cannot be very fast. Satisfy the requirements of power and economy well; 2. The first motor needs to reversely drag the engine to start until the engine reaches the high-efficiency economic zone, and the coaxial design of the first motor and the engine needs to match the first motor with a larger specification, increasing At the same time, the cost of the enterprise also increases the difficulty of design. How to place the first motor with a larger specification in the original space has also become a problem; 3. The drive system has a complex structure, takes up a lot of space, and is inconvenient to carry

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