Tandem type hybrid power tractor and intelligent control method

Abstract

According to the tandem type hybrid power tractor and the intelligent control method, stepless speed change running of the tractor is achieved through driving of a motor, the running speed can be adjusted at will within 0-40 km / h, and the tandem type hybrid power tractor has the advantage of continuous stepless speed regulation; two-gear mechanical gear shifting is adopted, stepless speed change running is achieved in gears, and a field operation gear and a road transportation gear are achieved; the electric drive transmission system is simple in structure, high in durability, low in failure rate, high in transmission efficiency and stable in performance; diesel-electric driving power response is fast, power reserve is large, a diesel engine always works stably in the optimal economic area, and a tractor power system is efficient and saves oil. An electric control intelligent management system is adopted to intelligently control the rotating speed of the engine, and the whole machine is simple, comfortable and fast to control and low in control intensity.

Description

technical field [0001] The invention relates to the field of tractors, in particular to a series hybrid tractor and an intelligent control method. Background technique [0002] The electric drive system has the technical advantages of continuous stepless speed regulation. Compared with hydraulic transmission, the efficiency is higher. It is one of the feasible technical solutions to solve the problem that the tractor is difficult to shift continuously through the mechanical stepped transmission due to the large working load. In recent years, the domestic new energy vehicle industry has developed rapidly, and the electric drive technology suitable for vehicles has made great breakthroughs with a high degree of autonomy; various core components such as electric motors, DC / AC inverters and power storage devices The performance indicators have reached the world's advanced level, and the cost advantage is obvious. [0003] Electric tractors are not equal to electric vehicles. Th...

AI Technical Summary

Problems solved by technology

At this stage, the battery energy density has been increasing year by year, reaching 150-160Wh / kg in recent years. According to previous research, when the chassis layout is ignored, the plowing operation time of the pure electric tractor is constrained by its own maximum gravity, and the maximum is 3 hours; But charging takes 10-30 hours

In addition, the cost of use is relatively high. According to current conditions, the battery cost for a 50-horsepower pure electric tractor to plow for 3 hours has reached 170,000 to 200,000 yuan.

Therefore, in addition to major technological breakthroughs in battery technology and rapid mature applications, pure electric tractors have no technical feasibility and marketability in the short to medium term

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