Study of an Active Heat‐Dissipating Liquid Metal Wire with Electrical‐Material Cotransmission Characteristics and Its Applications

Abstract

In the field of precision motors, there is a growing demand for higher power density, requiring wires to withstand elevated current density and resulting, in significant heating of the motor. This study investigated various properties of liquid metal conductors and evaluated their potential for enhancing the heat dissipation performance in a motor armature system. The results demonstrate that liquid metal conductors can be successfully applied to a motor armature system. Their characteristics, such as electro‐hydraulic coupling and decoupling, fulfill the requirements of fluid field circulation and unidirectional electrical conduction in the armature system. With a current density of 176.8 mA/cm², the maximum temperature decreased from 35.2 °C to 30.9 °C, achieving a temperature reduction of 12%. This paper details the specific methods for manufacturing motor armatures using liquid metal conductors, including the structures of different types of armature systems. Additionally, the paper also presents a study on some performance aspects of this armature system, showing a decrease in the maximum temperature from 54.9 °C to 50.9 °C, corresponding to a 7.3% temperature reduction. Thus, a novel approach is provided to the thermal management system of motors, which can be further extended to the field of bioelectrodes in future research.This article is protected by copyright. All rights reserved.