电动汽车充电桩的气动噪声分析和优化

潘琦,江丙云,陈云

Aerodynamic noise analysis and optimization for charging pile of electric vehicle

Qi PAN,Bingyun JIANG,Yun CHEN

表 1 不同工况下各测点的A计权声压级

Tab.1 A-weighted sound pressure levels at points of different operating conditions

测试点 环温25 ℃ 环温30 ℃ 环温35 ℃ 环温40 ℃ LpA,S/dB LpA,T/dB Ev/% LpA,S/dB LpA,T/dB Ev/% LpA,S/dB LpA,T/dB Ev/% LpA,S/dB LpA,T/dB Ev/% 前 74.5 72.9 2.1 77.0 75.7 1.7 78.9 77.3 2.0 83.4 81.5 2.3 后 58.2 51.4 13.0 60.0 53.9 11.3 61.3 54.8 11.8 66.5 57.4 14.8 左 62.9 60.8 3.4 64.7 65.0 −0.5 66.1 65.6 0.7 70.5 69.1 1.4 右 62.1 59.6 4.2 64.5 63.0 2.4 65.9 64.4 2.3 70.2 67.5 3.3