Double-motor-driving electric vehicle rear axle

Abstract

The invention discloses a double-motor-driving electric vehicle rear axle, and belongs to the technical field of a vehicle rear axle. The rear axle comprises two half shafts arranged on the rear axle, wherein two motors are arranged on the rear axle, and the power output of the two motors is directly or indirectly connected or drives the two half shafts arranged on the rear axle. The double-motor-driving electric vehicle rear axle has the advantages that the structure is simple, the realization is easy, and the power and torque output characteristics can be improved when the double-motor-driving electric vehicle rear axle is applied to an electric vehicle rear axle.

Description

technical field [0001] The invention relates to a rear axle of an electric vehicle, in particular to a rear axle of an electric vehicle driven by dual motors, and belongs to the technical field of vehicle rear axles. Background technique [0002] In recent years, electric vehicles and electric tricycles have developed rapidly due to their environmental protection performance and low usage fees. The manufacture and demand for the rear axle of electric vehicles have shown a rapid development trend. The rear axle on electric vehicles generally uses a motor to drive the reducer to connect to the differential The motor drives the two semi-shafts on the rear axle to rotate. This kind of rear axle is equipped with a motor, which can basically meet the requirements for the use of small power and low torque, but cannot fully meet the requirements of high power and high torque. Requirements, on the other hand, the motor is easily damaged when the transmitted torque and power are too l...

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Problems solved by technology

[0002] In recent years, electric vehicles and electric tricycles have developed rapidly due to their environmental protection performance and low usage fees. The manufacture and demand for the rear axle of electric vehicles have shown a rapid development trend. The rear axle on electric vehicles generally uses a motor to drive the reducer to connect to the differential The motor drives the two semi-shafts on the rear axle to rotate. This kind of rear axle is equipped with a motor, which can basically meet the requirements for the use of small power and low torque, but cannot fully meet the requirements of high power and high torque. Requirements, on the other hand, the motor is easily damaged when the transmitted torque and power are too large. Electric vehicles are also gradually becoming popular in remote mountainous areas. On the mountain roads that often go up and down, the normal and safe driving of electric vehicles requires high power and high torque output characteristics. In order to meet this demand, the traditional method is to increase The power of the driving motor, but generally with the increase of power, its volume will also increase, which will bring space problems to the corresponding rear assembly, so simply increasing the power of the motor cannot fully adapt to the high-power and high-torque output of electric vehicles Development needs, the excessively large volume of the motor brings space problems to the installation of the rear axle, which is basically impossible to realize in the design of some models. In the current market practice, an electric vehicle rear axle capable of outputting high torque and high power is required

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