Electric drive axle

Abstract

The invention relates to the technical field of electric drive axles, in particular to an electric drive axle which comprises a high-voltage connector, a low-voltage connector, a motor controller, a motor, a speed reducer and a shell, the motor controller, the motor and the speed reducer are installed in the shell, the high-voltage connector and the low-voltage connector are arranged in the envelope range of the shell, the motor controller is integrated in a motor end cover, and the motor controller is integrated in a motor end cover. And a power semiconductor module of the motor controller is thermally pressed on the motor end cover. Compared with the prior art, the high-voltage connector and the low-voltage connector are in the enveloping range of the shell, the safety of the plastic wire harness connector under the collision condition can be effectively protected, internal wiring can be achieved, and the space of the whole vehicle is saved. The power semiconductor module is fixed in a thermocompression bonding mode, heat conduction performance is improved, thermal resistance is reduced, and durability is improved. The use of mechanical parts such as a mechanical shell, a cover plate and a supporting piece is reduced, the use amount of copper bars and connecting pieces in current energy transmission is reduced, and the cost is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of electric drive axles, in particular to an electric drive axle. Background technique [0002] New energy vehicles represent the development direction of future automobiles, and the proportion of new energy vehicles in the global automobile market is growing rapidly. As a non-renewable energy source, petroleum cannot continue to support the huge demand for vehicle fuel in the long run, and there are inevitably pollution problems such as carbon emissions. For this reason, the search for clean energy has always been the goal of exploration by various countries, and new energy vehicles have therefore received great attention. In the technical route of key areas of "Made in China 2025", it is also proposed to break through technical problems such as the integration of motors and transmissions, inverters, and special transmissions for highly integrated electric drive systems. [0003] The electric bridge is th...

AI Technical Summary

Problems solved by technology

However, due to its large volume, it is limited by space in some complete vehicles, and there is a problem that it is difficult to arrange

[0006] In addition, the battery cost required by pure electric vehicles is relatively high, which will lead to the same level of models, and the cost of pure electric vehicles is higher than that of traditional engine vehicles, forcing the demand for pure electric vehicles to reduce costs.

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