A dual-disc clutch hybrid powertrain suitable for new energy vehicles

Abstract

The invention discloses a double-plate clutch hybrid power assembly suitable for a new energy automobile. An engine, an elastic damping connecting unit, a first motor, a double-plate clutch and a second motor of the double-plate clutch hybrid power assembly are coaxially connected in sequence. An output shaft of the second motor is connected with a drive axle assembly. An energy-storing power source is electrically connected with a first motor controller, a second motor controller and a vehicle control unit. The first motor controller is electrically connected with the vehicle control unit and the first motor. The second motor controller is electrically connected with the vehicle control unit and the second motor. The double-plate clutch does not generate axial force to the motors and the engine, and the functions of the clutch, a two-gear transmission, impact overload protection, forward and reverse separation, non-power-interruption speed-differential gear shifting and the like are achieved. Switching response is rapid, reliability is high, energy consumption is low, and efficiency is high. Energy output can be randomly switched between the engine and the energy-storing power source according to working conditions, energy can be recycled, and energy management fit is more reasonable.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a dual-disc clutch hybrid power assembly suitable for new energy vehicles. Background technique [0002] With the continuous development of society and vehicle engineering technology, the number of vehicles is increasing. The energy consumption during the use of vehicles and the pollution of exhaust emissions to the environment have been highly valued by all walks of life. More and more countries and regions have introduced incentive policies for the development of new energy vehicles, especially the use of powertrains for large commercial vehicles plays an important role in actively promoting the development of new energy vehicles and related supporting industries and technologies. Currently, the technical routes adopted in the market are mainly hybrid technology and pure electric technology. Whether it is hybrid technology or pure electric technology, it is necessa...

AI Technical Summary

Problems solved by technology

Since the traditional hydraulic automatic transmission has a continuously working hydraulic pump, which consumes a lot of energy and cannot be dragged in reverse, it is no longer suitable for hybrid or pure electric vehicles

[0003] At present, three kinds of automatic clutches are mainly used in hybrid powertrains. One is the automatic clutch that separates or combines the dry clutch by pushing the shift fork release bearing through the cylinder; Technical problems such as short bearing life, complex control system, large structure volume, high machining accuracy, high failure probability, short life, and high maintenance cost

The second is an automatic clutch that realizes clutching by pushing multiple wet friction pairs through a hydraulic cylinder; however, there are technical problems such as large displacement resistance, high maintenance costs, low efficiency, and complex hydraulic control components with multiple wet friction pairs.

However, AMT has technical problems such as poor smoothness of shifting, inability to realize powerless intermittent shifting, long shifting time, complex control system, large structure volume, high machining accuracy, low reliability, and inability to realize semi-linkage drive.

[0004] Therefore, the above three types of clutches do not meet the overall performance matching requirements of the hybrid powertrain, resulting in low power transmission efficiency of the hybrid powertrain, unreasonable energy management and matching, and low vehicle performance.

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