[Editor's Note] Guangdong Huilipu Intelligent Technology Co., Ltd. has been deeply rooted in the motor industry for 30 years. The company pioneered the world's first claw-pole servo motor, featuring ultra-low noise (below 20dB), high precision (below 0.1°), and an astonishingly low cost—down to just RMB 10 per unit. It has now become the preferred motor solution for new energy vehicles (NEVs), humanoid robots, and ultra-quiet intelligent actuators.
Electric motors—often referred to as actuators—represent the next critical breakthrough in reducing costs and enhancing user experience in today’s new energy vehicles (NEVs). Guangdong Huilipu Intelligent Technology has developed the world’s first claw-pole servo motor, delivering noise levels as low as 20 decibels—almost unheard of in the industry. Specifically, the in-vehicle claw-pole brushless servo actuator produces less than 25dB of noise, and only 28dB when installed in automotive air conditioners. Additionally, its position control precision is ten times higher than conventional motors, reaching a remarkable 0.1-degree level. Even more impressive is the motor’s production cost, which has been brought down to the RMB 10 range.
According to Mr. Zhou Aiming, Founder and Chairman of Huilipu, “Many NEVs are still using outdated brushed motors, which are not only noisy and less reliable but also more expensive than our claw-pole servo motors. As a result, an increasing number of NEV manufacturers are showing great interest in this technology. Our motors not only reduce cost and noise but also improve air-conditioning temperature control accuracy to 0.1 degrees. Since a single NEV can utilize at least 20 claw-pole servo motors, there remains significant potential to further reduce vehicle costs while dramatically enhancing quietness and user experience.”
These innovative claw-pole servo motors can be applied in numerous NEV components, including air vents, side mirrors, headlamp steering, seat angle adjustment, windshield wipers, sunroofs, tailgates, anti-pinch windows, intake grilles, onboard projectors, door locks, and retractable pedals. Backed by patented technology, these motors outperform conventional brushed motors and brushless stepper motors not only in noise, cost, and reliability, but also in performance—with smoother operation, stall detection and protection, high transmission efficiency, no need for Hall sensors, and single-wire protocol compatibility. Overall system costs are reduced by approximately 30%, including a 30% drop in controller cost and a 40% reduction in wiring harness costs (despite the motor itself being slightly more expensive than a stepper motor).
Chairman Zhou elaborated: “When used in automotive air-conditioning systems, our claw-pole servo actuators produce less than 28dB of noise—nearly 20dB quieter than traditional actuators (which operate around 45dB). Moreover, they offer over ten times the positional accuracy at a fraction of the system cost—down by 30%.”
The claw-pole motor was originally invented in 1992 by Chairman Zhou when he was a professor at Hunan University. In 1996, it gained widespread recognition after solving the long-standing issue of broken flaps in Haier air conditioners. Since then, the technology has been adopted by a wide array of global and domestic brands, including TCL, LG, Samsung, Haier, Midea, Panasonic, Hisense, Changhong, Gree, Airmate, Dyson, Carrier, Pioneer, Geely, Chery, and Dongfeng Motor.
Mr. Zhou, who holds a degree from the University of Electronic Science and Technology of China, is a well-known expert in China's stepper motor industry. He currently serves as Vice Chairman of the Digital Economy Committee of the China Information Industry Association, President of the UESTC Greater Bay Area Alumni Association of the School of Automation, and was the lead drafter of the national standard for air-conditioning damper motors. To date, Huilipu has been granted 48 Chinese invention patents, 98 utility model patents, and 16 software copyrights.
The company also benefits from the guidance and support of two influential stakeholders: Academician Fang Jiaxiong of the Chinese Academy of Engineering, a leading figure in China’s sensor industry, and Professor He Yigang, Deputy Dean of the School of Electrical Engineering at Wuhan University and a recipient of the National Science Fund for Distinguished Young Scholars. Academician Fang has provided strategic input on product direction and the design of Huilipu’s proprietary iMotors microcircuit chips, while Professor He developed a unique micro-current detection solution that eliminates the need for Hall sensors—significantly reducing cost.
Figure 1: Application scenarios and technical advantages of claw-pole servo motors in NEVs
Figure 2: Key parameter comparison between current mainstream actuators and claw-pole servo motors
Huilipu’s claw-pole servo motors adopt a single-wire communication protocol, requiring only one I/O pin on the MCU to send a PWM signal for controlling speed and direction. This reduces the traditional 5-wire interface to just 3 wires, cutting connector and cable costs by over 20%. The motor also features an integrated drive circuit, which not only reduces electromagnetic interference and motherboard size but also eliminates the need for a dedicated motor drive engineer and simplifies software development for system integrators.
Other standout features of the ultra-quiet claw-pole servo motor include:
LIN protocol support
Automatic soft start/stop
Adjustable phase-lock torque
Overheat protection
Stall protection
256-point sine wave control
Real-time position feedback
Overvoltage and undervoltage protection
Idle noise
As China’s NEV industry continues to gain momentum and assert its leadership in vehicle architecture innovation, Guangdong Huilipu Intelligent Technology is well-positioned to ride this wave of opportunity. The company’s groundbreaking 20dB claw-pole servo motors not only promise to reshape the global motor landscape but also highlight China’s growing influence in the ultra-quiet actuator domain.
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