Dual-motor integrated driving system of electric vehicle

Abstract

The invention discloses a dual-motor integrated driving system of an electric vehicle, and belongs to the technical field of driving systems of electric vehicles. The driving system comprises a casing, a dual-motor assembly and a control assembly; the dual-motor assembly includes a motor I and a motor II connected through a synchronizer; the motor I is relatively big in size; the control assemblyis arranged at the top parts of the motor I and the motor II; the control assembly comprises an insulated gate bipolar translator (IGBT) power unit I and an IGBT power unit II correspondingly used forsupplying power for the motor I and the motor II; the IGBT power unit I is arranged above the motor II; and the IGBT power unit II is arranged above the motor I. The driving system has the beneficialeffects that the dual-motor assembly and the control assembly are integrated in the casing, and the structural difference of the dual-motor assembly is fully utilized to arrange the control assembly,so that the space is fully utilized, and the whole vehicle layout is facilitated; and heat emission can be performed simultaneously on the dual-motor assembly and the control assembly through a designed water cooling assembly, so that the integral heat emission efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of electric vehicle drive systems, in particular to an electric vehicle dual-motor integrated drive system. Background technique [0002] At present, the development of electric vehicles is one of the major strategies for the transformation of my country's automobile industry. The country is vigorously promoting the development of electric vehicles, and pure electric vehicles are one of the main promotion objects. The electric drive system is a very important core component of pure electric vehicles. The highly integrated and high-efficiency electric drive system is the goal that the industry has been pursuing. [0003] The power and economy of pure electric vehicles are often considered to be two contradictory basic points. The high power requirements make the motor power and torque parameters large, so the whole vehicle often works at the low power and low torque point of the motor. Here, the motor system ...

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Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a dual-motor integrated drive system, which mainly solves the problem that the combined structure of the dual-motor drive system occupies a large space and makes the layout of the whole vehicle difficult, and further solves the problem of cooling the dual-motor drive system. For the problem of low efficiency, the purpose is to integrate the dual-motor components and control components into one casing, make full use of the structural space of the dual-motor components to arrange the control components, reduce the occupied space, make full use of the layout of the vehicle, and optimize the cooling structure , to improve the cooling efficiency of the integrated system

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