Automotive hybrid power structure based on AMT

Abstract

The invention discloses an automotive hybrid power structure based on AMT (automatic mechanical transmission). A transmission input shaft is provided with a driving tooth, driving and driven combinedteeth and mode-switching combined tooth sleeves, the driving tooth and the driving and driven combined tooth are fixedly connected together and sleeve the input shaft in a spaced way, the driven combined tooth is installed on the input shaft, and the mode-switching combined tooth sleeve can slide on the driving combined tooth and the driven combined tooth to be separately engaged with driving combined tooth or the driven combined tooth or to be simultaneously engaged with the teeth. An output shaft is provided with tooth parts similar to the input shaft, and the teeth have a similar connectionrelationship. The two mode-switching combined tooth sleeves slide synchronously, and when the two tooth sleeves slide synchronously, only one tooth sleeve is engaged with the driven combined tooth and the driving combined tooth simultaneously or the tooth sleeves are not engaged with the teeth simultaneously. A driving tooth of the motor is engaged with the driving tooth of the input shaft. The automotive hybrid power structure overcomes the problem of power interruption during shifting of an AMT transmission, can be automatically switched among a pure oil mode, a P2 hybrid mode and a P3 hybrid mode, and meets the requirements of different driving conditions.

Description

technical field [0001] The invention relates to new energy vehicles, in particular to an AMT-based vehicle hybrid structure, and belongs to the technical field of electric vehicles. Background technique [0002] With the increasingly stringent environmental protection measures around the world, electric vehicles have become a focus of automotive research and development due to their energy-saving and low-emission characteristics, and have been successfully commercialized. Since the battery life and charging technology of pure electric vehicles have not been fully resolved, they are not yet generally accepted by consumers. However, hybrid electric vehicles take into account the advantages of fuel vehicles and electric vehicles, so currently hybrid electric vehicles have more market prospects. [0003] The common hybrid setting methods are: 1. Add 48-volt BSG electrode on the engine to replace the traditional generator (referred to as P0); its representative mass-produced mod...

AI Technical Summary

Problems solved by technology

[0006] The hydromechanical automatic transmission is the most widely used transmission, which realizes the function of automatic torque conversion and speed change. With the increase of gears and the advancement of electronic control technology, the shifting response of this transmission is more agile , the action is smoother, but it also has some inherent disadvantages: First, the torque converter, which relies on liquid to transmit power, has a large volume and heavy weight, and the oil transmission efficiency is not as high as that of the gear transmission, which will consume some energy, resulting in The fuel consumption of the vehicle is high; secondly, the planetary gear needs to be locked during the shifting process, and some shifting shocks will inevitably occur during the locking action, especially when fast locking is required during intense driving; thirdly, since the entire mechanism includes electronic control, Hydraulic, mechanical and other devices make the structure very complicated and the reliability is relatively reduced

Due to the complex structure of DSG, the manufacturing cost is relatively high

[0009] Although AMT has unique advantages such as simple structure, low cost, easy manufacture, and high transmission efficiency, it is rarely used in hybrid vehicles due to inherent defects such as difficult control, especially power interruption during gear shifting, and poor driving comfort.

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