Mercedes-Benz announces long-range EV
Mercedes-Benz has unveiled its Vision EQXX concept EV, which has a range of more than 1000 km on a single battery charge, equating to a consumption of less than 10 kWh of energy per 100 km.
This range is achieved partly through the exterior design and aerodynamics, which have a drag coefficient of only 0.17. The car’s front face is smaller than that of the company’s CLA coupe, while a narrower rear-wheel track allows the air to flow more efficiently. Also, transparent external covers on the wheels prevent virtually all air turbulence.
The Vision EQXX has an energy efficiency of 95%. By comparison, a vehicle with an efficient IC engine achieves around 30%, and an average human long-distance runner achieves around 50%.
Also, instead of making the battery bigger and thus heavier, the energy density has been significantly improved – to 200 Wh/kg. That enables it to store 100 kWh, while taking up 50% less space and weighing 30% less than batteries with comparable capacity. This increase in capacity has been achieved by using state-of-the-art silicon anodes in combination with ultra-lightweight materials from Formula One.
The electric system that supplies power to the Vision EQXX’s auxiliary units draws additional energy from solar cells on the roof. This reduces the energy demands of the high-volt system and ultimately leads to more range. On a single day with ideal conditions, the cells can produce power for up to 25 km of extra range.
The Vision EQXX also uses a range of sustainable materials in its interior, from mushrooms to bamboo, cactus and vegan silk.