2022 BMW iX Flow Concept @ Magic Color-Changing Paint – The BMW E Ink

With the BMW iX Flow featuring E Ink being presented on the occasion of CES 2022, the Munich-based premium car manufacturer is offering the prospect of a future technology that uses digitization to also adapt the exterior of a vehicle to different situations and individual wishes. The surface of the BMW iX Flow featuring E Ink can vary its shade at the driver's prompting.

A variable exterior color can contribute to wellness in the interior and to the efficiency of the vehicle. This is done by taking account of the different abilities of light and dark colors when it comes to reflecting sunlight and the associated absorption of thermal energy. A white surface reflects a lot more sunlight than a black one. By implication, heating of the vehicle and passenger compartment as a result of strong sunlight and high outside temperatures can be reduced by changing the exterior to a light color. In cooler weather, a dark outer skin will help the vehicle to absorb noticeably more warmth from the sun.

In both cases, selective color changes can help to cut the amount of cooling and heating required from the vehicle's air conditioning. This reduces the amount of energy the vehicle electrical system needs and with it also the vehicle's fuel or electricity consumption. In an all-electric car, changing the color in line with the weather can therefore also help to increase the range. In the interior, the technology could, for example, prevent the dashboard from heating up too much.

E Ink technology itself is extremely energy efficient. Unlike displays or projectors, the electrophoretic technology needs absolutely no energy to keep the chosen color state constant. Current only flows during the short color changing phase.

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