Electric vehicle gearbox

Abstract

The invention belongs to the technical field of gearboxes and discloses an electric vehicle gearbox. According to the purpose, electric vehicles and the like can better adapt to mountainous regions with large slopes. The electric vehicle gearbox comprises a gearbox shell, a variable speed gear device, an input shaft and an output shaft. The input shaft and the output shaft are fixed to the gearboxshell through a first bearing seat and a second bearing seat correspondingly. The variable gear device comprises a drive gear arranged on the input shaft in a sleeving manner, a transmission mechanism, an output mechanism and a variable speed mechanism, wherein the transmission mechanism, the output mechanism and the variable speed mechanism are arranged on one side of the drive gear. By means ofthe electric vehicle gear box, the variable speed is achieved by setting the tooth number of a gear in the variable speed mechanism; multiple variable speed assemblies are used for achieving corresponding variable speed accumulation, and the variable speed range is enlarged; and then a transmission mechanism is installed at different positions, and therefore the multistage variable speed is smoothly achieved. The electric vehicle gearbox is simple and practical in structure and capable of being widely applied to electric vehicles and other facility equipment with high-torque variable speed requirements.

Description

technical field [0001] The invention belongs to the technical field of gearboxes, in particular to an electric vehicle gearbox. Background technique [0002] The existing electric vehicle driving device is generally a driving motor plus a first-stage deceleration mechanism, but this kind of driving device often has the following problems: 1. When going uphill and when accelerating with a heavy load, the current is large, the power consumption is large and the uphill Insufficient power to apply on slopes. When going uphill or accelerating with heavy load, it is easy to cause the current to increase sharply, the efficiency of the driving motor is low, and it is easy to burn the controller and the motor. At the same time, the high current discharge directly affects the life of the battery; 2. The overall efficiency of driving under various road conditions 3. Poor acceleration performance and weak climbing energy. Contents of the invention [0003] In order to solve at least...

AI Technical Summary

Problems solved by technology

[0002] The existing electric vehicle driving device is generally a driving motor plus a first-stage deceleration mechanism, but this kind of driving device often has the following problems: 1. When going uphill and when accelerating with a heavy load, the current is large, the power consumption is large and the uphill Insufficient power to apply on slopes

When going uphill or accelerating with heavy load, it is easy to cause the current to increase sharply, the efficiency of the driving motor is low, and it is easy to burn the controller and the motor. At the same time, the high current discharge directly affects the life of the battery; 2. The overall efficiency of driving under various road conditions Low, short cruising range; 3. Poor acceleration performance, weak climbing energy

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