The Uni Wheel concept frees up space within a vehicle that was previously unavailable to users. By relocating many components of the drive system to the wheel hub and downsizing the electric motor with no impact on performance, the extra space made available within the vehicle body can be utilized as additional cargo room, such as a larger trunk or a ‘frunk’.

It’s also possible to move away from conventional seating arrangements designed around the driver, creating new interior layouts and designs for the era of fully autonomous driving. Utilizing this space to improve battery capacity can also improve driving range, meaning users can achieve the range of a large EV without the physical size of the vehicle growing.

The developments Uni Wheel allows will also significantly increase passenger space. EV batteries are conventionally located low down in a vehicle’s body, which requires a raised ride height, often reducing passenger space by the volume of the battery. However, Uni Wheel optimizes battery packaging, with the loss of passenger space minimized.

This will be a valuable feature for PBVs, which need to maximize interior space by offering a low, flat-floor design. The flat-floor platform enabled by Uni Wheel allows for strong flexibility and scalability when it comes to PBVs, enabling the design of various body types depending on the  intended use case.

Uni Wheel is highly flexible and easily adaptable to all types of EVs, including regular passenger and high-performance EVs, as the system can implement the same powertrain and reduction gear functions required for conventional EVs.

In addition to vehicles of various sizes, Uni Wheel can also be applied to other types of mobility devices, such as wheelchairs, bicycles and delivery robots. Depending on the requirements of these different forms of mobility, Uni Wheel can be scaled to work with wheel sizes as small as 4 inches and as large as 25 inches or more. In addition, Uni Wheel’s ability to move the rotation axis of the wheel makes it possible to create forms of personal mobility that can climb stairs as smoothly as an escalator.

Hyundai Motor and Kia are continuously verifying the stability, efficiency, and durability of Uni Wheel through various tests to perfect its development and will continue efforts to improve its efficiency by adjusting the reduction gear ratio, and upgrading the lubrication and cooling system.

Hyundai Motor and Kia have applied for and registered eight patents related to Uni Wheel in South Korea as well as the United States and Europe.

More information and detailed visual representations of the innovative Uni Wheel drive system can be found here: https://www.youtube.com/watch?v=Nd6C0y8xc20