Double-clutch and double-motor hybrid power assembly with speed reducer module

Abstract

The invention discloses a double-clutch and double-motor hybrid power assembly with a speed reducer module. An engine, an elastic damping connector, a front single-plate clutch, a first motor, a rear single-plate clutch, a second motor and the speed reducer module of the double-clutch and double-motor hybrid power assembly are sequentially coaxially connected with one another; the speed reducer module is connected with a driving axle assembly; a vehicle control unit is connected with an energy storage power source, a first motor controller and a second motor controller, the first motor controller is further connected with the first motor and the energy storage power source, and the second motor controller is further connected with the second motor and the energy storage power source. The double-clutch and double-motor hybrid power assembly has the advantages that the front single-plate clutch and the rear single-plate clutch can be switched over without power interruption, are quick in response, small in structural volume, high in reliability and transmission efficiency and low in energy consumption and maintenance cost and are provided with simple control systems, chassis impact load of main driving motors can be effectively reduced or eliminated by the speed reducer module, accordingly, the power transmission efficiency of a new-energy vehicle can be effectively improved, energy management and matching can be optimized, the integral performance can be improved, and the like.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a dual-clutch dual-motor hybrid power assembly with a reducer module 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 electr...

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 discharge resistance, low efficiency, complex hydraulic control components, and high maintenance costs 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] For the main drive motor, due to the low speed and large torque demand, it will lead to large axial size, volume, weight, high cost, and large impact load on the chassis, especially due to the large moment of inertia of the motor rotor. Drive axle assembly, engine crankshaft, starter generator, automatic clutch and elastic damping connector have a very high impact strength, resulting in broken shaft of starter generator, damage to elastic damping disc, premature wear of engine crankshaft bearing, main shaft of rear axle Reducer gear damage, increased vibration and noise and other technical issues

[0005] 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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