The invention discloses a noise reduction method for a charging pile of an electric vehicle. The noise reduction method comprises the following steps: acquiring an operation efficiency curve of a power supply module of the charging pile under different power load conditions; according to the operation efficiency curve of the power supply module of the charging pile under different power load conditions, obtaining the heating value Qi of the power supply module under different power load conditions, and selecting the maximum value Qmax of the heating value; the phase-change radiator is designed according to the maximum value Qmax of the calorific value; under the condition of the maximum allowable temperature of a power device of the power supply module, the heat dissipating capacity Q total of the phase-change radiator is composed of the heat dissipating capacity Q1 of a metal fin-shaped radiator and the phase-change heat absorption capacity Q2; wherein the total Q is more than n times greater than the Qmax; wherein Q1 is greater than Qmax, and Q2 is more than m times greater than Qmax; wherein ngt; 1, mlt; 1. The method has the advantages of simplicity and convenience in operation, low noise reduction cost, good noise reduction effect and the like.
本发明公开了一种电动汽车充电桩降噪方法,包括步骤:获取充电桩的电源模块在不同功率负载条件下的运行效率曲线;根据充电桩的电源模块在不同功率负载条件下的运行效率曲线,得到电源模块在不同功率负载条件下的发热量Qi,从中选出发热量最大值Qmax;根据发热量最大值Qmax来对相变散热器进行设计:在电源模块的功率器件最大容许温度条件下,相变散热器的散热量Q总由金属翅形散热器的散热量Q1和相变吸热量Q2两部分组成;其中Q总大于Qmax的n倍以上;其中Q1大于Qmax,Q2大于Qmax的m倍以上;其中n>1,m<1。本发明具有操作简便、降噪成本低且降噪效果好等优点。
Noise reduction method for electric vehicle charging pile
一种电动汽车充电桩降噪方法
2024-10-01
Patent
Electronic Resource
Chinese
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