Analysis of lithium-ion thermostabilization systems traction batteries of electric vehicles

Abstract

Problem. The paper solves an important scientific and practical problem that allows to increase the competitive advantages of agricultural producers through the use of modern energy-efficient tractors with electric transmission. The control system of the traction electric drive is a component of the modern electric tractor of the fourth traction class which has become the most widespread and is intended for providing movement in the modes of various loading. The study of electric motors of a modern electric tractor of the fourth traction class is carried out. The electric motor is characterized by input and output parameters, internal parameters or state parameters, external influences. Methodology. The methods of theoretical basic electrical engineering have been developed in the production and calculation of circuits. Also classical methods of statistics of signals from ADC are used. Results. The technique of processing information from the current, voltage and temperature sensors using a mathematical apparatus without using harmonic analysis is presented. The hardware implementation of the proposed method allows the use of simplified computing tools. Originality. Complex analysis of the data obtained from the current, voltage and temperature sensors is carried out. During the analysis, the range of velocities with stable operation of the measurement system was determined. Based on the data obtained, it is concluded that the use of a horn antenna as a concentrator substantially eliminates lateral interference and extends the range of possible velocity measurements. It is shown that the level of sampling significantly affects the upper limit of the measurement speed. Practical value. It is shown that: As a result of the work, an important scientific and practical problem was solved, which allows to increase the energy efficiency of tractors through the use of tractors of the fourth traction class electric drive. To maintain the maximum energy efficiency of the traction electric drive of the tractor in the modes of various loads, its control system must include means of displaying the current state of the energy parameters of the power plant. The electrical equipment must include an on-board computer, which helps the driver to make the optimal tasks of work, according to preliminary calculations, as well as display the information needed on the route, the state of the vehicle, means of communication. communication of the car with the external environment, with the navigation system, etc. The on-board computer provides information to the touch screen with programmable virtual controls, and communicates with the driver's mobile systems. The study of electric motors of a fifth traction class electric tractor was carried out. As an object of motor control, it is characterized by input and output parameters, internal parameters or state parameters, external influences. An algorithm for selecting the parameters of the traction motor system has been developed and a circuit implementation of the control system has been offered.