Charging times for electric cars are still a long way from those at the petrol pump. Research has shown that this is one of the most important reasons for consumers not to drive an electric car, and InMotion is going to change this!
InMotion is developing a new fast-charging technology called 'Electric Refueling'. No long queues for a charging station anymore, or the need to buy a cup of coffee, just charge and go.
It is a challenge that should not be underestimated. Technologically, it is a very complex concept. InMotion will demonstrate the possibilities of Electric Refueling by competing in the 24 Hours of Le Mans in the Garage 56 with an electric fast-charging endurance race car in 2023.
The Revolution is the first race car with our fast charging technology. Right now, charging within 12 minutes is very impressive, but we want this to be even faster. InMotion is eager to really put Electric Refueling into practice; make charging as fast and convenient as refueling. We are doing this by making our current battery pack charge even faster. This first iteration consists of a 57.6 kWh battery pack which we can charge within 12 minutes. In the course of 2021, we will further develop the battery pack to reduce the charging time to an even more impressive 7.5 minutes.
In order to showcase these fast charging times and really test the battery pack to its limits, we have chosen to implement the battery pack in an LMP3 race car. The chassis for this car consists of 3 main parts. The first in front is the monocoque, which contains the safety cell for the driver. This part is designed and manufactured by Ginetta, a race car manufacturer from the UK. Behind the monocoque lies the battery casing, which is a structural part of the car and is made from a carbon composite structure. This battery casing is designed in cooperation between Ginetta and InMotion, and produced by Ginetta. At last behind the battery pack a tubular frame is mounted, which connects the front of the car to the rear suspension, and houses the powertrain. This tubular frame is designed by InMotion and manufactured by CP-tech in Germany.
The battery pack itself consists of 30 battery modules, each containing 12 cells, yielding a total voltage of 750V. In order to fast-charge these battery modules, InMotion has developed it’s own cooling system, consisting of 2 separate loops. The first loop extracts heat from the battery modules by flowing a water-like fluid through the battery pack. The second loop consists of a refrigerant system (like an air-conditioning system), which is used to extract heat from the first loop and give it to the environment. The advantage from such a refrigerant system is that it allows us to keep the batteries at their optimal temperature, even if the outside temperature is higher. Making fast charging even faster.