CAJ | 학술논문

纯电动汽车的噪声源和内部结构与内燃机汽车有着明显差异，由于电机总成噪声较低，使得纯电动汽车的车内路噪变得更加突出。对某款纯电动汽车在不同工况下的车内噪声进行频谱分析，在中低频范围内，结构路噪是车内噪声的主要原因。结合纯电动汽车车身及其板件的动态结构特性分析，识别出车内结构路噪的主要振动源和影响途径。研究结果可对纯电动汽车车内结构噪声的优化控制提供参考。
순전동기차적조성원화내부결구여내연궤기차유착명현차이，유우전궤총성조성교저，사득순전동기차적차내로조변득경가돌출。대모관순전동기차재불동공황하적차내조성진행빈보분석，재중저빈범위내，결구로조시차내조성적주요원인。결합순전동기차차신급기판건적동태결구특성분석，식별출차내결구로조적주요진동원화영향도경。연구결과가대순전동기차차내결구조성적우화공제제공삼고。
The noise source and structure of battery electric vehicles (BEV) are quite different from those of the internal-combustion-engine vehicles. Since the noise level of the motor’s powertrain is low, the road-induced interior noise of the BEV becomes dominant. In this paper, the spectrum analysis of interior noise for a type of the BEV is carried out under different conditions. It is shown that the interior noise depends mainly on the contribution of the road-induced structural noise in the low and mid-frequency ranges. By analyzing dynamic structure characteristic of the BEV’s body and panels, the vibration sources and influencing factors of the road-induced interior structural noise are indentified. The study provides a reference for optimization and control of BEV’s interior structural noise.