Product Overview

The axial flux motor is a permanent magnet synchronous motor that adopts a disc-shaped axial flux topology. The magnetic field direction is parallel to the rotation axis, and the stator and rotor are arranged in a flat, disc-like configuration facing each other. It is specifically designed for high-end applications where space is limited, weight needs to be minimized, power density must be high, and dynamic response must be rapid, addressing the pain points of traditional radial motors—large axial dimensions, heavy weight, low efficiency, and slow response. By stacking multiple discs, it can achieve power redundancy or high-power output, making it the next-generation core power component for new energy vehicles, aerospace, and high-end industrial automation.

Working Principle

1. Magnetic Flux Path: The magnetic flux flows parallel to the motor’s axis, with the stator and rotor arranged face-to-face in a disc-like configuration, resulting in a shorter magnetic circuit and lower iron losses.
2. Torque Generation: The rotor’s permanent magnets couple with the stator windings’ magnetic field, and the large-diameter pole faces produce high torque density.
3. Structural Advantages: Its flat “disc-shaped” design results in an extremely short axial length, supports multi-disc stacking combinations, and allows flexible power scaling.
4. Dynamic Characteristics: With low rotor inertia and fast current response, it achieves high-precision dynamic control.

Core Advantages and Selling Points

1. Extreme Lightweighting: Reduces weight by 50–70%

At the same power/torque level, its weight is only 30–50% of that of a conventional radial motor; a 200kW drive motor can be reduced from 120kg to 50–60kg, directly improving electric vehicle range or increasing aircraft payload capacity.

2. Ultra-Compact Dimensions: Axial length shortened by 50–70%

Its axial length is only 30–50% of that of a traditional radial motor; hub motor thickness can be compressed from 100mm to 40–50mm, and robot joints can be reduced from 80mm to 30–40mm, without encroaching on installation space.

3. Ultra-High Power/Torque Density: Increases by 2–5 times

Torque density: 20–30 Nm/kg (traditional radial motors: 5–10 Nm/kg).

Power density: 5–8 kW/kg (traditional radial motors: 1.5–3 kW/kg).

A 30kg axial motor can deliver the torque of a traditional 100kg radial motor, while a 15kg unit can provide peak power of 30–40kW for electric motorcycles.

4. High Efficiency Across a Wide Range: Improves efficiency by 2–5 percentage points

Peak efficiency: 96–98% (traditional radial motors: 92–96%).

Efficiency in the >90% range: 85–95% (traditional radial motors: 60–80%).

Electric vehicle efficiency rises from 93% to 96%, extending range by about 5%; a 10kW motor generates 30–40% less heat, allowing for a more compact cooling system.

5. Rapid Dynamic Response: Rotational inertia reduced by 50–80%

Rotor inertia is only 20–50% of that of a radial motor at the same power level; acceleration time is shortened by 2–5 times, robot motion cycles are reduced by 20–40%, position loop bandwidth is increased by 3–5 times, and machining accuracy reaches ±0.002mm.

6. Excellent Heat Dissipation and High Reliability

Its flat structure provides a larger heat dissipation area, enabling faster heat conduction; the direct-drive design without a gearbox extends mean time between failures (MTBF) by 2–3 times, resulting in longer maintenance intervals.

Target Customer Groups

1. New Energy Vehicles and High-Performance Mobility: Automakers, electric drive system suppliers, and hub motor solution providers.
2. Aerospace and Electric Aviation: eVTOL aircraft manufacturers, drone companies, and aviation power system vendors.
3. High-End Industry and Automation: Humanoid robots, collaborative robots, precision machine tools, and high-speed automated equipment manufacturers.
4. Special-Purpose Power Systems and Power Generation: Wind power, tidal power, marine electric drives, and hybrid power system integrators for construction machinery.

Application Scenarios

1. New Energy Vehicles: Main drive motors, wheel-side motors, hub motors, and high-performance sports car power systems.
2. Electric Aviation (eVTOL): Aircraft main propulsion motors, distributed electric drive systems, and lightweight aviation power units.
3. Humanoid/Collaborative Robots: Joint drive motors, high-torque-density lightweight actuators, and high-precision servo systems.
4. High-End Industrial Automation: Precision machine tool spindles, high-speed conveyors, servo presses, and semiconductor equipment drives.
5. Renewable Energy Power Generation: Wind turbines, tidal generators, small high-efficiency generator sets, and energy recovery systems.
6. Special Vehicles and Ships: Construction machinery, port equipment, electric ship propulsion systems, and hybrid power units.

Solving Industry Pain Points

1. Severe limitations on axial installation space: Traditional motors have excessively long axials, making them impossible to fit into hubs, robot joints, or compact electric drive compartments.
2. Weight vs. Power/Torque trade-off: At high power demands, excessive weight reduces range, decreases aircraft payload, and compromises equipment flexibility.
3. Slow dynamic response and control lag: Traditional motors have high rotational inertia, leading to sluggish acceleration and poor positioning accuracy, unable to meet the demands of high-speed, precision control.
4. System efficiency and heat dissipation bottlenecks: Traditional motors suffer from low efficiency and significant heat generation, complex cooling systems, high long-term operating energy consumption, and elevated maintenance costs.

Core Product Value

1. Weight Value: Increases range by 5–10% or boosts payload

For automobiles: Every 10kg reduction adds 2–3km of range; a 200kW motor losing 60kg+ improves range by 12–18km.

For aviation: Each 1kg reduction in eVTOL weight allows an additional 0.5–1kg of battery/passenger capacity; a 200kg power system reduced to 80–100kg significantly enhances flight range and payload.

2. Space Value: Frees up 50–100L of critical space

For electric vehicles: The powertrain’s axial dimensions shrink by over 50%, freeing up 50–100L for battery packs or passenger cabins.

For robots: Joint thickness is halved, enabling greater freedom and more flexible layouts; collaborative robots can now operate in tight spaces.

3. Efficiency Value: Reduces energy consumption by 10–20%, yielding substantial annual electricity bill savings

A 10kW continuous-operation motor sees a 3% efficiency boost, generating an extra 2,600 kWh annually (based on 8,000 hours of operation).

For electric vehicles, overall energy consumption drops by 10–20%, while range increases by 5–10% under the same battery conditions.

4. Dynamic Value: Boosts production efficiency by 20–40%, achieving micron-level machining precision

For robots: Motion cycles shorten by 20–40%, increasing productivity per unit time.

For machine tools: Position loop bandwidth expands by 3–5 times, raising machining precision from ±0.01mm to ±0.002mm, opening doors to ultra-precise manufacturing.

5. System Value: Lowers total cost of ownership (TCO)

By eliminating gearboxes, reducing structural components, and simplifying cooling systems, one robot joint case saw total costs drop by 15%.

Direct-drive designs without gearboxes offer better heat dissipation, extend maintenance intervals by 2–3 times, and cut maintenance costs by 30–50%.

Frequently Asked Questions (FAQ)

Q1: What is the core difference between an axial flux motor and a traditional radial motor?

A: The magnetic field direction differs—the axial flux motor has a magnetic field parallel to the rotation axis, with stator and rotor arranged in a disc-like configuration facing each other; whereas the traditional radial motor features a magnetic field along the radial direction, with cylindrical stator and rotor nested inside. Axial motors are flatter, lighter, and offer higher power density.

Q2: Which applications of new energy vehicles are suitable for axial flux motors?

A: Suitable for main drive motors, wheel-side motors, and hub motors, especially ideal for high-performance sports cars and lightweight electric vehicles, enhancing range, optimizing interior space, and improving handling.

Q3: What advantages does an axial flux motor offer in the aviation sector?

A: Lightweight and high power density enable eVTOL aircraft to significantly increase payload capacity and flight range; its flat structure integrates easily into the airframe and adapts well to distributed electric drive systems.

Q4: Is maintenance for axial flux motors difficult?

A: Featuring a direct-drive, gearbox-free design with excellent heat dissipation, the mean time between failures (MTBF) is extended by 2–3 times, resulting in longer maintenance intervals and lower maintenance costs.

Q5: Do you support high-power customization?

A: Yes, through multi-disc stacking combinations, it can achieve power redundancy or high-power output, meeting power requirements ranging from 10kW to 500kW+.

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