A high torque density motor with stator winding and heat pipe integrated heat dissipation structure

Abstract

The invention discloses a high torque density motor with a stator winding and heat pipe integrated heat radiation structure. The motor is characterized in that a casing, a rotor assembly and a statorassembly are sequentially coaxially arranged from outside to inside, a circumferential surface of a stator core is uniformly provided with multiple stator teeth, a stator groove is formed between adjacent stator teeth, a motor stator winding includes multiple winding coils, the rotor assembly includes a permanent magnet and further includes a thermal pipe radiator, each stator tooth is wound withone winding coil, a dual-layer insulation paper segmentation layer is arranged between the two adjacent winding coils, the thermal pipe radiator includes a heat absorption segment and a heat radiationsegment, the heat absorption segment is fixed between the dual-layer insulation paper segmentation layer of each stator groove through heat conduction silica gel, a stator shaft is provided with theheat radiation space, and a heat radiation segment of a thermal pipe extends into the heat radiation space. The motor is advantaged in that loss heat of the stator winding is led out through the thermal pipe radiator, problems of large heat radiation and high temperature rising can be solved, and the motor can be applied to an electric automobile wheel direct-driven system.

Description

technical field [0001] The invention belongs to the technical field of high-torque-density motors, in particular to a high-torque-density motor with an integral heat dissipation structure of stator windings and heat pipes. Background technique [0002] With the continuous improvement of the torque density of the motor system, more and more high-tech fields such as new energy vehicles, all-electric aircraft, and all-electric ships use high-performance direct-drive motors as the main drive system to improve the overall performance of the electric drive system. Power-to-weight ratio performance. However, the increase in motor torque is based on the increase in motor winding current. As the current in the motor winding increases, the copper loss increases, which will inevitably lead to an increase in the winding temperature of the high torque density motor. If the temperature limit of the enameled wire is exceeded, the motor winding will be burned, which will directly affect t...

AI Technical Summary

Problems solved by technology

However, in the case of high torque output in existing motors, the main heat source and weak link are the stator windings. Therefore, the contact structure between the heat pipe and the iron core cannot best utilize the heat conduction and heat dissipation capabilities of the heat pipe.

Images