基于热仿真的平板复合音膜表面温度分析  

Surface Temperature Analysis of Flat Composite Diaphragm Based on Thermal Simulation

作　　者：王世伟 陈进 谢守华 WANG Shiwei;CHEN Jin;XIE Shouhua(Guoguang Electric Company Limited,Guangdong Guangzhou 510800;Guangdong Provincial Key Laboratory of Electroacoustic Electronic Technology R&D and Application,Guangdong Guangzhou 510800,China)

机构地区：[1]国光电器股份有限公司,广东广州510800 [2]广东省电声电子技术研发与应用企业重点实验室,广东广州510800

出　　处：《广州化工》2024年第22期95-98,共4页GuangZhou Chemical Industry

摘　　要：利用Klippel PWT模块测试动圈式平板扬声器音圈的工作温度,利用ANSYS软件仿真模块建立稳态热分析模型,通过静态夹具测温法模拟音圈对平板复合音膜的热传递,将热仿真温度和不同厚度平板复合音膜表面的实际温度对比。结果表明:当音圈最高工作温度为130℃时,热仿真平板音膜的中间部位受热较严重,其次是音圈与平板音膜的粘结位置,平板音膜的边缘受热不明显。静态夹具测温法测试1 mm平板复合音膜的粘结位置的表面温度为50℃,比4 mm平板音膜相同位置的温度高出13.6%,热仿真和静态夹具测试的温度分布相近,夹具静态测温的方法可以在平板复合音膜选材及复合结构设计方面实现较快的表面温度分布判定。Klippel PWT module was used to test the voice coil working temperature of moving coil flat speaker,and ANSYS software simulation module was used to establish the steady-state thermal analysis model.The static fixture temperature measurement method was used to simulate the heat transfer of voice coil to flat composite diaphragm,and the thermal simulation temperature was compared with the actual surface temperature of flat composite diaphragm with different thickness.The results showed that when the highest working temperature of the voice coil was 130℃,the middle part of the thermal simulation flat diaphragm was heated more seriously,followed by the bonding position between the voice coil and the flat diaphragm,and the edge of the flat diaphragm was not heated obviously.The surface temperature at the bonding position of 1 mm flat composite diaphragm tested by static test fixture was 50℃,which was 13.6%higher than that at the same position of 4 mm flat diaphragm.The temperature distributions of thermal simulation and static fixture test were similar.The method of fixture static temperature measurement could be used to determine the surface temperature quickly in the material selection and composite structure design of flat composite diaphragm.

关 键 词：Klippel PWT 热分析模型 热传递 平板复合音膜 

分 类 号：TN643[电子电信—电路与系统]