리니어모터 응용분야 소개

시대의 지속적인 발전으로, 선형 모션 모듈은 전자, 반도체 장비 등의 분야에서 널리 사용됩니다., 정밀 CNC 기계, 그리고 고급 의료기기. 선형 모듈은 선형 모터와 컨트롤러로 구성됩니다., and linear motors are characterized by high precision, long travel distance, high load capacity, and high speed.

During operation, linear motors release a significant amount of heat that accumulates inside the motor, most of which is generated as Ohmic heat when the motor windings are working. When the internal temperature of the motor becomes too high, the insulation life decreases, and the mechanical performance of the metal components also deteriorates, which can severely shorten the motor’s lifespan and impact its safety.

The lifespan and safety issues of linear motors are essentially problems of thermal management. As market demand for linear motors continues to rise, future market competition will focus on performance, and performance competition will center on thermal management technology. Thermal management technology plays a decisive role in the safety, reliability, and lifespan of linear motors, and it is also a bottleneck issue that will seriously constrain the future development of linear motors.

“Typically, the area of severe heating in a linear motor is at the bottom, but since the motor’s cooling space is limited, the water channel can only be arranged at one end of the motor. The thermal conductivity of the motor winding itself is very low, so the idea is to apply phase-change devices between the heating area and the water-cooled area, creating an additional heat transfer path to achieve cooling and temperature control. This is one thermal management solution for linear motors.”

Linear motor scenario in high-precision CNC machines: By adopting a liquid-cooled thermal management solution for the linear motor, the maximum temperature at 50W power is reduced by 42.5°C, from 125°C down to 82.5°C. With the same temperature, the power can be doubled (to 100W).

“In scenarios like linear motors that require high thrust, heat generation tends to be a serious issue. For example, when the acceleration of a maglev train increases, the coils inside can generate critical levels of heat. Targeted thermal management solutions can be designed to address this. Similar solutions can be applied to gantry cranes at ports, container handling equipment, and so on, all of which can benefit from phase-change devices.”

Linear motor thermal management solution: Using Professor Tang’s ultra-thin heat spreader technology, a thermal management system for linear motors was designed. By obtaining the dimensions and operating conditions of the linear motor, a U-shaped or L-shaped ultra-thin phase-change heat spreader that matches the motor is designed and manufactured. This spreader uses the gas-liquid phase-change cycle inside to evenly transfer the Ohmic heat generated by the winding components during operation to the liquid cooling plate, where the heat is dissipated.

Compared to traditional linear motor cooling structures, this technology has the advantage of low thermal resistance, resulting in high heat dissipation efficiency for the winding components. Even during long-term operation, the motor is less likely to experience heat accumulation. The internal temperature difference of the motor is controlled within 5°C, which helps maintain the mechanical properties of the metal components, extend the lifespan of the insulation and motor, and improve the motor’s safety. It also ensures uniform heat distribution in the linear motor, preventing issues such as motor burnout or thermal deformation of the casing.