A type of motor

By setting air inlets and outlets on the motor shaft and utilizing rotor rotation to achieve forced convection circulation cooling, the problem of heat dissipation difficulties in axial flux motors for robot joint applications is solved, achieving efficient motor temperature management and performance improvement.

CN224438728UActive Publication Date: 2026-06-30SHENZHEN XUANJI POWER TECHNOLOGY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN XUANJI POWER TECHNOLOGY CO LTD
Filing Date
2025-08-06
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Axial flux motors are difficult to dissipate heat in robot joint applications, resulting in excessively high motor temperatures that affect performance. Existing natural cooling methods cannot meet the needs of robots with frequent start-stop and high peak power conditions.

Method used

Design a hollow motor shaft with an air inlet and an air outlet, and set a heat dissipation structure on the shaft. Forced convection circulation heat dissipation is achieved by the rotation of the rotor. The centrifugal force carries away the hot air, and the external cold air is drawn in through the air inlet, realizing forced convection cooling inside and outside the motor cavity.

Benefits of technology

It achieves efficient heat dissipation without increasing space occupation, avoids the risk of demagnetization, improves the operating efficiency and continuity of the motor, and meets the high-load working conditions of robot joints.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224438728U_ABST
    Figure CN224438728U_ABST
Patent Text Reader

Abstract

This utility model discloses an electric motor, relating to the field of mechanical structure technology, comprising a motor shaft, the motor shaft including an opening and an air inlet, the air inlet communicating with the opening; a housing forming a accommodating cavity, the housing having an air outlet communicating with the air inlet; and a heat dissipation structure disposed within the accommodating cavity and fixed to the motor shaft, the heat dissipation structure moving under the drive of the motor shaft to discharge air entering from the air inlet to the air outlet. This application, by providing a heat dissipation structure opening and an air inlet on the motor shaft, in conjunction with the air outlet on the housing, achieves forced convection circulation and heat dissipation of the air inside and outside the motor cavity during motor operation. This achieves forced convection to reduce the temperature inside and outside the motor cavity, thereby avoiding the risk of demagnetization and improving motor efficiency.
Need to check novelty before this filing date? Find Prior Art