环面点胶对电源磁性器件可加工性的影响

变压器、电感等磁性器件性能显著影响电源参数指标。针对E型变压器磁芯气隙制作一致性差、效率低的问题,建立了不同点胶方案的有限元分析模型,进行了高黏度环氧绝缘胶非牛顿流体的剪切力机理分析。结果表明,通过减小胶点尺寸、改变胶点形态及分布的方法,可以提高磁芯器件的一致性和加工效率。采用全自动点胶工艺精确控制胶点半径和中心距,制作出了满足电感量要求的变压器,提升了加工效率,验证了仿真和机理分析的正确性。获得了一种高精度、高效的环面点胶和磁性器件制作工艺方法。

Influence of Toroidal Dispensing on Machinability of Power Magnetic Devices

The performance of magnetic devices such as transformer and inductor significantly affect the parameters of power supply. Aiming at the problems of poor consistency and low efficiency in making the air gap of the magnetic core of E-type transformer, a finite element analysis model was established for different dispensing schemes, and the shear mechanism of epoxy insulating non-Newtonian fluid with high viscosity was analyzed. The results show that the consistency and processing efficiency of the magnetic devices can be improved by reducing the size of the glue dots, or changing the shape and distribution of the glue dots. By using automatic dispensing process to control the radius and center distance of glue dots accurately, a transformer meeting the requirements of inductance is made, which improves the processing efficiency and verifies the correctness of simulation and mechanism analysis. A high-precision and high-efficiency manufacturing process for torus dispensing and magnetic devices was obtained.