Electric Mercedes drives more than 1000 kilometers with a full battery: practical test passed | Car

Mercedes had on paper announced a range of 1000 kilometers for its EQXX. During a trip over the Alps checked by the German TÜV inspection authority, the study model proved that this is actually possible in practice.

The EQXX is a concept car in which all kinds of groundbreaking techniques have been applied that we will see in production models in a few years. In the case of the EQXX, the emphasis was mainly on a large range, because that seems to be the trump card for enticing the general public to drive electric.

According to the computer calculations, the innovative Mercedes could go more than 1000 kilometers on a single charge. That this is not a false promise, was shown during a practical test. It was the car’s first time on a public road.

After the 1,008-kilometre drive from Sindelfingen in Germany to Cassis on the Côte d’Azur in France, the on-board computer said the batteries had power for another 140 kilometers. And to think that part of the route was driven in temperatures just above freezing: anything but ideal for the condition of the battery pack. And the route through the mountains occasionally had to overcome significant ascents.

According to Mercedes, average electric cars use up about two-thirds of their energy through air resistance. That is why the developers of the Vision EQXX mainly focused on this. This has resulted in an extremely streamlined car with a so-called Cw value of 0.17. Of course, such a number means little to few people, so the German brand provided some context. One american football, an oval match ball has a drag coefficient of between 0.18 and 0.20. A penguin does a lot better than the EQXX, with a Cw value of just 0.05.

Weight saving

Weight saving also played a role. The car weighs 1750 kilos, which is surprisingly little for an electric model. This is mainly due to the new battery pack, which is half the size and also 30 percent lighter than the battery pack in the current electric top model from Mercedes, the EQS. However, the promising solid-state battery has not been used. This Mercedes simply contains lithium-ion battery cells, as can be found in just about all electric and hybrid cars of the moment.

The battery pack of the EQXX is less than 100 kWh in size and works with a particularly high voltage of more than 900 volts. That is even more than the 800 volts that Porsche, Audi and Hyundai/Kia currently use, while most brands, such as BMW, still work with 400 volts.

At 07:00 on April 5, the Vision EQXX drove from Sindelfingen, Germany, to Cassis in the deep south of France. The ride went through the Gotthard tunnel and Milan. According to Mercedes-Benz, the Vision EQXX drove with regular traffic and there were no people behind the wheel trying to set extreme records.

The average speed was 87.4 km/h. On the highway, the 140 km/h was even reached. The solar panels in the roof provided the car with 25 kilometers extra driving range, according to Mercedes-Benz. Average consumption was 8.7 kWh per 100 kilometres.

Mercedes-Benz wants to release a car in two years’ time that incorporates the technology from this concept model. It will probably be a compact family car in the format of the current A-class sedan, but with a coupé-like roofline, because of the ideal streamline.

Electric Mercedes drives more than 1000 kilometers with a full battery: practical test passed | Car
Source link Electric Mercedes drives more than 1000 kilometers with a full battery: practical test passed | Car

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