Novel energy-saving electric loader drive control system and control method

Abstract

The invention discloses a novel energy-saving electric loader drive control system and control method, and belongs to the technical field of shoveling engineering machinery vehicles. A control handleis connected with a vehicle control unit (VCU); the VCU is electrically connected with a motor controller I, a motor controller II and a power battery controller BMS; the motor controller I is in control connection with a double-output-shaft walking motor, and the double-output-shaft walking motor drives front wheels and rear wheels through a front transmission shaft and a rear transmission shaft;the motor controller II is in control connection with a hydraulic pump control motor, and the hydraulic pump control motor drives a hydraulic pump to provide power for a hydraulic system of a loader;and the power battery controller BMS is in control connection with a power battery pack, and the power battery pack supplies power to the double-output-shaft walking motor and the hydraulic pump control motor. The motor is in a mode of a double-output-shaft structure, the whole machine is easy to arrange, the structure is simple and convenient, the reliability is high, the problems that an existing loader is complex in structure and control are solved, the working efficiency is high, and the good energy-saving effect is achieved.

Description

technical field [0001] The invention relates to a pure electric loader, in particular to a novel energy-saving electric loader drive control system and control method, and belongs to the technical field of shoveling construction machinery vehicles. 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, the drive control system of wheel loaders mostly uses internal combustion engine power, the power transmission system technology is mature, and the engine is generally diesel engine. 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 in general work is only about 30%. Most of the existing pure electric loader power transmission systems use dual motors to drive the front and rear whe...

AI Technical Summary

Problems solved by technology

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 normal operation; the power transmission system of the existing pure electric loader mostly uses dual motors to drive the front and rear wheels, which is expensive and complicated to control

[0003] In the prior art, the Chinese patent discloses "a drive control system applied to pure electric loaders" CN109457744. Although it realizes the motor-driven traveling mechanism, the motor it uses has only a single power take-off port, and an external speed change mechanism is required. and transfer case to realize the four-wheel drive of the loader, the structure is complex, the manufacturing cost is high, and the maintenance is difficult

[0004] The Chinese patent also discloses "a hybrid loader power device and corresponding loader" CN206653918 provides the technology that the motor directly drives the axle to rotate through the transmission shaft, but two motors are required to be directly driven respectively to realize the four-wheel drive of the loader. Also expensive and complex control system

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