All motors currently available in the market, be it for automotive, industrial, or a variety of other applications, belong to the category of radial flux motors. These motors, originally invented by Thomas Davenport in 1837, form the backbone of motor technology today. However, the concept of axial flux motors was first introduced by the esteemed scientist Michael Faraday back in 1821. The axial flux motor was considered theoretically superior and more ideal compared to its radial counterpart. Nevertheless, due to technological limitations such as gap tolerances between rotor and stator components, compact heat dissipation challenges, rotor deflection issues under load, and the reliance on permanent magnets, the industry leaned towards the more established radial flux motors. Despite attempts by Nikola Tesla and others to explore axial flux motor concepts in the following years, they did not gain traction, and radial flux motors continued to dominate the market.

Axial flux motors provide a range of design advantages over radial flux motors, particularly in the electric vehicle sector. By relocating the motor from the axle to inside the wheel, axial flux motors allow for innovative drivetrain configurations.

The growing interest in axial flux motors is evident in recent years. These motors, historically utilized in stationary applications like elevators and agricultural machinery, have seen a surge in development efforts to adapt them for electric motorcycles, airport transportation pods, cargo trucks, electric cars, and even aircraft.

While traditional radial flux motors have seen enhancements in weight and cost optimization through the use of permanent magnets or induction technologies, the unique characteristics of axial flux motors offer a promising alternative approach.

Axial flux motors are known for their compactness and shorter axial length compared to radial equivalents, making them particularly suitable for in-wheel motor applications where space is limited. The compact design of axial motors results in higher power and torque densities, reducing the need for excessively high operational speeds.

The innovative design of axial flux motors, with fewer coil ends and potential for the use of centralized or segmented windings, opens up new possibilities for optimized efficiency and performance.

Our Robin Motor stands out for its advancements in overcoming the manufacturing challenges of axial motors. By introducing multi-layer axial flux motors that occupy just a fraction of the volume of traditional radial motors while delivering the same output power, our technology represents a significant leap forward. Leveraging patented non-clogging generator technology, each layer of our multi-layer motors can be individually controlled for optimized performance and efficiency, without the drawbacks of reluctance losses.

In the realm of personal mobility devices like electric bicycles and scooters, radial flux motors have historically been the standard choice. However, considering the high torque demands of modern personal mobility solutions, the compact, high-torque, and energy-efficient nature of axial flux motors position them as the future of propulsion technology. This shift in focus has led us to develop a range of high-performance electric scooters and bicycles based on the cutting-edge design principles of Robin Motor's multilayer axial flux motors.

Typical axial flux motors are characterized by their small and compact design, featuring staggered rotor and stator disks with minimal spacing between them. Despite their ability to generate high magnetic flux levels, axial flux motors encounter challenges in dissipating heat effciently. In contrast, our multi-layer axial motors offer a more compact configuration, where multiple layers of rotor and stator disks are interleaved. Furthermore, the implementation of a reluctance-free stator layer with a coreless design further complicates the heat dissipation process.

To address this issue, we have devised a sophisticated cooling solution. Initially, we meticulously control the stator's radius and thickness at a precise 1:20 ratio and utilize a non-metallic composite material with superior thermal conductivity for optimal heat transfer to the motor housing. Additionally, a flat water circuit integrated between the stator layers, connected to the cooling pump and heat sink plate, facilitates effcient heat dissipation through the circulation of the coolant. Moreover, our multi-layer axial motors allow for torque output adjustment by selectively operating individual motor layers (stators), providing ample cooldown time for deactivated stators

Our Robin Motor has successfully addressed the challenges associated with the manufacturing process of axial motors, leading to the development of advanced multi-layer axial flux motors. in comparison to conventional radial motors, our motors exhibit superior efficiency, requiring only 1/3 of the volume for equivalent power output, attributed to a distinct operational principle.Employing cutting-edge patented technology for clog-free generators, our multilayer axial flux motors feature a unique design where multiple layers of coils and permanent magnets are meticulously stacked and independently controlled for optimal performance. This allows for precise torque management, enabling all motor layers to activate for high torque demands and selectively powering down layers for reduced energy consumption during low torque requirements. Such an innovative design not only enhances adaptability to real-world applications but also minimizes inefficiencies related to internal resistance.

Contemporary personal mobility devices, such as electric bicycles and scooters, predominantly utilize traditional radial flux motors. These motors operate with a flux direction perpendicular to the axis, typically comprising an enameled wire-wound core as the stator and a rotor with a magnetic field perpendicular to the axis. The flux range is dictated by the height of the cylindrical motor, impacting torque output in relation to height variations. While high torque radial flux motors necessitate larger dimensions for stability during rotation, they are limited in design flexibility, particularly in elongated forms. Axial flux motors, on the other hand, offer compact size, high torque output, and enhanced energy efficiency, making them ideal for personal mobility devices.Leveraging the capabilities of Robin Motor's innovative multilayer axial flux motors, we have engineered a range of high-performance electric scooters and bicycles tailored to modern mobility needs.