电机驱动模块铝基混压板散热技术研究

Research on heat dissipation technology of aluminum based hybrid pressure plate for motor drive module

电机驱动模块是新能源汽车电机系统中的核心组件,主要以厚铜线路+铝基混压结构为主,依托面铜、孔铜、高导热粘结片及金属铝基实现大功率器件的快速散热。本文从影响散热的关键要素入手,对散热结构及其相关因素进行了DOE测试,找出提高产品散热性能的最优加工方案,从而使电机驱动模块在极限电流330A,板面温升≤100℃的条件下,耐温时间由原50S提升到90S以上,较好地满足了客户大电流设计及大功率器件的高散热要求。

The motor drive module is a core component in the motor system of new energy vehicles,mainly composed of thick copper wires and aluminum based hybrid structures.It relies on surface copper,pore copper,high thermal conductivity bonding sheets,and metal aluminum matrix to achieve rapid heat dissipation of high-power devices.This a rticle starts with the key factors that affect heat dissipation,conducts DOE testing on the heat dissipation structure and its related factors.The optimal processing plan to improve the heat dissipation performance of the product is found,so that the motor drive module can increase its temperature resistance time from 50 seconds to more than 90 seconds under the condition of a maximum current of 330A and a surface temperature rise of≤100℃,It effectively meets the high heat dissipation requirements of customers for high current design and high-power devices.