Integrated electric drive power assembly system

Abstract

The invention discloses an integrated electric drive power assembly system which comprises an inverter, a motor, a two-speed transmission, a main speed reducer and a left-right half shaft. The inverter comprises positive electrode bus, negative electrode bus, a resistor, a capacitor, an IGBT (insulated gate bipolar transistor) group, a three-phase alternating-current output line and an inverter shell, and the three-phase alternating-current output line is electrically connected with the motor by an inverter and motor connector; a motor output shaft of the motor is connected with a transmissioninput shaft of the two-speed transmission by a flange plate; the two-speed transmission comprises the transmission input shaft, a first-speed driving gear, a first-speed driven gear, a second-speed driving gear, a second-speed driven gear, a transmission output shaft, a combination sleeve and a transmission shell; a differential mechanism and a main speed reduction gear train are integrated in the main speed reducer, and two ends of the differential mechanisms are connected with the left-right half shaft. The integrated electric drive power assembly system has the advantages that the inverter, the motor, the two-speed transmission, the main speed reducer and the differential mechanism are integrated at the high level and can be modularly produced; mounting spaces can be sufficiently utilized, and the weights can be reduced to a great extent; the integrated electric drive power assembly system is high in reliability and low in vibration noise, and smooth transmission can be carried outby the integrated electric drive power assembly system.

Description

Technical field [0001] The invention relates to the field of automobile power and transmission systems, in particular to an integrated electric drive power assembly system. Background technique [0002] In order to alleviate the energy and environmental crisis, traditional fuel vehicles have been transformed into hybrid vehicles and electric vehicles. At present, the electric drive powertrains of hybrid vehicles and pure electric vehicles generally adopt separate installations of batteries, inverters and motors, and use cables to realize electrical connection; separate installations of motors, transmissions and final drives, and use drive shafts and The flange realizes the mechanical connection, retaining the differential and the left and right half-bridge structure. This power structure combined with the traditional drive train greatly reduces the utilization rate of the vehicle chassis space, and the components need to be connected by connecting devices. Complexity, complicate...

AI Technical Summary

Problems solved by technology

However, the device adopts the hollow motor shaft, which increases the difficulty of manufacturing and installation, and does not use the final reducer, the output torque of the drive system is limited, and it is difficult to be competent for the high-load working conditions with large torque requirements

[0004] Patent CN201620513908.7 discloses an integrated electric drive axle, which includes: a first drive motor, a first reducer, a differential, a second reducer and a second drive motor, avoiding the dual-motor The structure of the power coupling system is complex, but the dual motors and the two reducers are arranged on the drive axle along the axial direction, and there is a problem of excessive unsprung mass

[0005] Patent CN201420176025.2 discloses an electric drive transaxle integrating a second-speed gearbox, a final drive and a differential. The device has a complete structure, high reliability and high transmission efficiency. The gearbox is integrated on the drive axle, and there is a problem that the axial dimension of the entire structure is too large

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