British Company Develops Lighter, Lower-Cost Electric Motor by Replacing Copper Windings with Aluminum

The British Company Ricardo Replaced Copper Windings with Aluminum Coils in an Electric Motor, Resulting in a Lighter Propulsor with a Final Cost That Fits Most Consumers’ Budgets

Since the first idea of creating electric cars and other vehicles that could be electrified, the focus has remained the same. There have been various efforts to develop electric cars that are increasingly efficient, and therefore, the emphasis is on the part that provides power to the car: the batteries. Even with batteries still being the center of attention, there are many other areas that can be explored to technologically advance the efficiency of electric cars. Additionally, there is also the recycling aspect of this motor which, being made of aluminum, will be much easier to recycle at the end of its life cycle, and can also be repurposed in other sectors. The use of aluminum windings instead of copper also makes the motor cheaper and much lighter for the vehicle.

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Development Process of Electric Motors with Aluminum Windings

The British company Ricardo is responsible for developing electric motors with aluminum windings, intended for compact electric cars. Undoubtedly, this is a major breakthrough since conventional electric motor windings are typically made of copper, while aluminum is used only in the fabrication of induction motor rods.

Lightweight, Efficient, and Low-Cost Propulsion

There are many advantages to this efficient motor – and low-cost, primarily because aluminum is much lighter than copper. Even though aluminum has about 30% less conductivity and requires slightly larger windings, it is a good alternative to minimize mass as much as possible. Furthermore, in terms of efficiency, aluminum and copper are on par.

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In more modern high-power propulsion systems, copper has significant losses, unlike aluminum in alternating current. It loses even more in direct current; however, the windings made with both metals do not show significant differences. Nevertheless, aluminum has a much better thermal capacity than copper, allowing it to handle a greater power before overheating.

The Use of Aluminum in Motor Manufacturing is Linked to Economic, Environmental, and Sustainability Considerations

The characteristics of aluminum are not purely technical. Due to aluminum being much more common in nature than copper, it is also easier to extract, and the combination of these two characteristics is key to making it much cheaper.

In conclusion, aluminum is easier to recycle, unlike copper, where the attempt to recover it carries a high contamination risk; thus, a much more complex and costly process is required for its reuse in other applications. With the new lightweight, efficient, and low-cost motor made from aluminum windings, it will be much easier to recycle when its useful life cycle comes to an end.