Three-motor novel pure electric loader drive control system

Abstract

The invention discloses a pure electric loader, and belongs to the shoveling and conveying engineering machine vehicle technology. A whole vehicle controller VCU is electrically connected with a motorcontroller I, a motor controller II, a hydraulic controller HCU and a power battery controller BMS. The motor controller I is connected with a walking motor I, the walking motor I drives a front transmission shaft through an AMT speed changing box I, and the front transmission shaft drives a front wheel. The motor controller II is connected with a walking motor II, the walking motor II drives a rear transmission shaft through an AMT speed changing box II, and the rear transmission shaft drives a rear wheel. The hydraulic controller HCU is connected with a motor controller III, the motor controller III is connected with a hydraulic motor, the hydraulic motor drives a hydraulic pump, and the hydraulic pump provides power for a hydraulic system. The power battery controller BMS is connectedwith a power battery set. The pure electric loader is low in noise and free of pollution, an independent electric drive walking system and an electric drive hydraulic system are adopted so that stepless speed changing and easy gear shifting can be achieved, the power is strong, and the hydraulic system can provide stable and efficient powerful drive force.

Description

technical field [0001] The invention relates to the technical field of shoveling engineering machinery vehicles, in particular to a pure electric loader. Background technique [0002] Loaders are used for loading, unloading, pushing, construction and other operations of bulk materials such as soil, gravel, coal, etc., and are widely used in various construction sites. At present, a large number of wheel loader drive control systems use internal combustion engine power, and the transmission device is hydraulic transmission, which is mainly composed of engine, torque converter, power shift transmission, drive shaft, drive axle and so on. The power transmission system technology of this method is mature, and the engine is generally a diesel engine. [0003] Its disadvantages are: [0004] The engine consumes a lot of fuel, wastes energy and pollutes the environment. The transmission efficiency of the hydraulic torque converter is low, and the average efficiency during normal...

AI Technical Summary

Problems solved by technology

[0004] The engine consumes a lot of fuel, wastes energy and pollutes the environment

The transmission efficiency of the hydraulic torque converter is low, and the average efficiency is only about 30% during general work; the power shift transmission used for the loader is a multi-speed transmission, generally three gears forward and three gears forward or four gears forward and backward Four gears; the transmission shift adopts hydraulic manual operation, multi-plate friction clutch and brake shift, complex structure, high manufacturing cost and difficult maintenance

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