随着电池电动汽车(BEV)市场份额的增长,我们必须了解噪音,振动,以及在BEV内部发现的粗糙性(NVH)现象使这种技术革命成为可能。类似于传统车辆,直到今天遇到了许多NVH问题,BEV必须面对许多新的和棘手的NVH问题。例如,传统的车辆由内燃机(ICE)提供动力,内燃机是主要的噪声源。来自其他来源的噪音通常被内燃机掩盖,因此,研究重点是减少燃烧发动机,而较少关注其他来源的噪声。BEV没有冰,自动变速器,分动箱,燃油箱,进气口,或排气系统。在他们的地方,有足够的空间来容纳电驱动单元和电池组。BEV在没有内燃机的情况下更安静,然而,对车辆NVH的研究甚至更重要,因为消除内燃机会暴露BEV的许多噪声行为,这些行为以前被忽略,但现在看起来很明显和恼人。最近对BEV的NVH进行了研究,主要集中在降低动力总成引起的噪声上,轮胎,风和辅助系统以及音质的改善。本文将重点介绍BEVNVH研究的最新进展,以促进BEV系统的未来发展。这是对理论的回顾,计算,以及过去几年学术界和工业界进行的实验工作。
As battery electric vehicle (BEV) market share grows so must our understanding of the noise, vibration, and harshness (
NVH) phenomenon found inside the BEVs which makes this technological revolution possible. Similar to the conventional vehicle having encountered numerous
NVH issues until today, BEV has to face many new and tough
NVH issues. For example, conventional vehicles are powered by the internal combustion engine (ICE) which is the dominant noise source. The noises from other sources were generally masked by the combustion engine, thus the research focus was on the reduction of combustion engine while less attention was paid to noises from other sources. A BEV does not have ICE, automatic transmission, transfer case, fuel tank, air intake, or exhaust systems. In their place, there is more than enough space to accommodate the electric drive unit and battery pack. BEV is quieter without a combustion engine, however, the research on vehicle
NVH is even more significant since the elimination of the combustion engine would expose many noise behaviors of BEV that were previously ignored but would now seem clearly audible and annoying. Researches have recently been conducted on the NVH of BEV mainly emphasis on the reduction of noise induced by powertrain, tire, wind and ancillary system and the improvement of sound quality. This review paper will focus on recent progress in BEV
NVH research to advance the BEV systems in the future. It is a review for theoretical, computational, and experimental work conducted by both academia and industry in the past few years.