Golden Securities: Robot Electric Motor High-Temperature and High-Torsion Demands are Urgent

AI Business News, Golden Securities statement: Robot electric motor high-temperature and high-torsion demands are urgent: High torque density + low torque fluctuation + strong overload ability + heat dissipation properties are the core performance indicators of motors. Robots in various complex environments complete tasks such as lifting, grasping, and walking, requiring large moments to drive, like the iRobot A2 Max robot with a peak joint torque of 450 Nm. Due to the limited size of robots, joint motors need to have high torque output capabilities at unit density. In industrial robotic arms, surgical robots, etc., where precise operations are required, joint motors require low backlash torque. In joints such as leg and foot joints that frequently interact with the environment, motors often operate in periodic short-term overload conditions, requiring peak torques of 5-10 times the rated torque demand. Meanwhile, when motors are in overloading conditions, the winding has extremely high energy density, generating massive heat in a short time. Therefore, high-performance robot joint motors need to have good high-temperature and heat dissipation properties. By keeping power density unchanged, designing the harmonized magnetic field magnetic circuit will reduce motor volume by half, achieving a leap in power density, which is expected to continuously open up space for industrial and humanoid robot applications.

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