Impact of Electric Vehicle Lateral Dynamics on the Battery Pack

Abstract:

The present work is concerned with the rolling motion of the battery pack when EV travelling on the road. First McPherson suspension system was regarded as the research object with detailed analysis of its structural features and motion characteristics. Establish the mathematical model which could apply to calculating the rolling motion of the vehicle body. Through MATLAB/Simulink simulation software, we could calculate the rolling angle on passive suspension. On this basis, assume that the battery pack mounted on the vehicle body and make it passive connection and PID connection. When the body rolls, the battery pack will produce a certain angle then. Next establish the mathematical model to summarize the relationship between the two variables. Then we set the parameters and calculate the roll angle of battery pack in both cases for comparison. Simulation results show that road irregularities will make battery rotate an angle and PID controller can effectively reduce the angle, especially angular acceleration. This paper put forward a new idea that battery is connected with body by active control on EV, and proves the superiority in reducing the rolling angle.

• Periodical: Applied Mechanics and Materials (Volume 590)
• Pages: 451-457
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.590.451
• Online since: June 2014
• Authors: Sen Nan Song, Fa Chao Jiang*, Hong Shi
• Keywords: Battery Pack, Mathematical Models, McPherson Suspension, PID Control, Simulation

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