Deeply integrated electric drive system

Abstract

Disclosed is a deeply integrated electric drive system. The deeply integrated electric drive system includes a motor module, a motor controller module and a gearbox module which are integrated. A motor shell of the motor module is formed by stirring, rubbing and welding a motor water jacket outer sleeve and a motor water jacket inner sleeve. The motor controller module includes a MOSFET module, adirect current filter module, a MOSFET water cooling board, a control board, a three-phase copper bar and a motor controller cover assembly. The gearbox module includes an input shaft assembly, an intermediate shaft assembly, a differential assembly, a parking mechanism and a gearbox cover assembly. The motor module and the motor controller module adopt integrated cooling water channels. The electric drive system integrates a motor, a motor controller and a gearbox. The motor controller is integrated with the MOSFET module, and so the size is reduced. The motor and the motor controller are connected by the three-phased copper bar which are internally arranged, and adopt integrated cooling water channels without external connection of a high and low voltage wiring harness and a cooling water pipe. The deeply integrated electric drive system has the advantages of high reliability, low cost and convenient logistics transportation.

Description

technical field [0001] The invention belongs to the field of operation and transportation, relates to an electric vehicle power device, in particular to a deeply integrated electric drive system. Background technique [0002] In the traditional electric drive system, the motor and the gearbox are connected together, and the motor controller module is placed separately, and its volume is relatively large. In order to manufacture the water channel, the water-cooled motor shell is manufactured by sand mold integrated casting process. The motor and the motor controller are connected together through the external high-voltage wiring harness. The cooling water of the motor and the motor controller is cooled in series through the external water pipe. The signal is connected to the motor controller through the low-voltage wiring harness. [0003] Since the stator of the motor needs to be cooled, a cooling water channel needs to be provided in the motor housing, so most of the motor...

AI Technical Summary

Problems solved by technology

[0003] Since the stator of the motor needs to be cooled, a cooling water channel must be provided in the motor housing, so most of the motor housing adopts a low-pressure casting lost foam process, which has low manufacturing efficiency and is prone to shrinkage cavities

Motors, motor controllers, and gearboxes are independent components, requiring additional design of mechanical, electrical, and waterway connection features, resulting in traditional electric drive systems that are bulky, heavy, low in integration, and high in cost

Images