Intelligent rear-drive assembly of rear axle of electric vehicle

Abstract

The invention discloses an intelligent rear-drive assembly of a rear axle of an electric vehicle and belongs to the technical field of electric vehicles. The intelligent rear-drive assembly of the rear axle of the electric vehicle comprises a differential mechanism, a motor, a controller and a pair of half axles, wherein the motor is used for providing power input for the differential mechanism, the controller is used for controlling the working state of the motor, and the pair of half axles is mounted at the power output end of the differential mechanism. An oil injection assembly and a liquid level monitoring assembly are mounted on a differential mechanism shell of the differential mechanism. The liquid level monitoring assembly can be used for monitoring whether oil in the differential mechanism shell exceeds a rated liquid level or not in the oil injection process. The oil injection assembly and the liquid level monitoring assembly are mounted in positions close to the middle portion of the differential mechanism shell. The oil injection assembly comprises a guide part, an oil injection base detachably inserted on the differential mechanism shell, and screws, and the installation position of the oil injection base is lower than the installation position of the liquid level monitoring assembly. Whether the oil level reaches the rated oil level or not is monitored in the process of injecting oil into the differential mechanism shell, and the oil injection process can be conducted conveniently; and the backflow phenomenon is avoided, and the air tightness is good.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a rear drive assembly of a rear axle of an electric vehicle. Background technique [0002] At present, the rear drive assembly of the rear axle of an electric vehicle includes a differential, a motor that provides power input to the differential, a controller for controlling the working state of the motor, and a pair of half shafts installed at the power output end of the differential. According to the latest industry common knowledge, the differential is equipped with a housing, and the middle of the housing is provided with a grease nozzle. Before use, it is usually necessary to inject oil into the differential housing so that the inside of the differential The gears can work normally, and the height of the injected oil is generally controlled in the middle of the differential case. When the gears inside the differential are working, they will continuously bring up t...

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Problems solved by technology

[0003] However, the design of the traditional oil nozzle is not reasonable enough. When oiling, unscrew the protective cap and inject the oil into the housing until the oil leaks from the oil nozzle to stop the oil injection, which is equivalent to the need for reverse flow during the oil injection process. Knowing that the liquid level of the oil has reached the rated height, the oil level at this time has risen to the middle position on the shell, but this traditional method will lead to the loss of oil. In the current situation where oil resources are increasingly scarce Under the current situation, this approach is not advisable, and the original oil injection scheme needs to be improved

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