Regarding new energy vehicles, the PK between the new car-making forces and traditional car companies in the past two years has never stopped. Many people compare "new energy" to the track, and on this track, the new forces are indeed ahead of the traditional car companies. For example, pure electric mileage, 1000km is the benchmark; for example, intelligent, whether it is the screen in the car or the assisted driving system, the new forces are also more brilliant.
On this track, as the "big brother" of traditional car companies, Mercedes-Benz, is naturally not willing to show weakness. At the beginning of 2022, a new pure electric concept car was launched in the world, called VISION EQXX (hereinafter referred to as Mercedes-Benz EQXX). Judging from the information currently available, the mileage of this pure electric concept car will exceed 1000km.
Moreover, the Mercedes-Benz EQXX is not just a concept car level, but is planned to be mass-produced in 2024. Some people say that pure electric battery life of 1000km is not to make the battery capacity larger? In fact, it is not so simple, in the Mercedes-Benz EQXX car, we see a different concept.
It is equipped with a 100 kWh battery pack, which is an improvement over EQS
Of course, behind the ultra-long endurance, there must be the support of large-capacity batteries, but in other words, large-capacity batteries do not represent ultra-long battery life. Specifically, the Mercedes-Benz EQXX is equipped with a 100 kWh battery pack, which is smaller than the 111.8 kWh battery pack on the Mercedes-Benz EQS, but from the perspective of battery technology, the Mercedes-Benz EQXX is better. First of all, the battery pack uses a technology similar to Cell to Pack to achieve an energy volume density of 400Wh/L, that is, the nearly 100kWh capacity of the battery on the EQXX is only half the volume of the similar capacity of the battery on the EQS, and the weight is 30% lighter, only 495kg (including the entire battery pack assembly).
For a pure electric vehicle, the size of the motor power will directly affect the level of pure electric endurance. Probably with the concept of giving priority to battery life, Mercedes-Benz equipped the EQXX with a single motor with a maximum power of only 150 kilowatts (204 hp). What is the concept of 204 hp for this pure electric car? What we know at present is that the Mercedes-Benz EQXX is a coupe positioning, the wheelbase is 2800mm, and the whole car should be similar to the standard axle version of the 3 Series. Therefore, 204 horsepower is not big or small for mercedes-Benz EQXX. With a 100 kWh battery pack, the Mercedes-Benz EQXX can have a range of more than 1000 km (less than 10 kWh of energy consumption per 100 km).
Behind the ultra-long endurance, it is inseparable from the ultra-low wind resistance coefficient
Next, we are going to talk about the focus, that is, the Drag Coefficient of the Mercedes-Benz EQXX is as low as 0.17Cd, which is mainly due to excellent aerodynamics. As can be seen from the appearance of the Mercedes-Benz EQXX, it adopts a shape similar to a water drop, and adopts the long-tail design used by supercars. In addition, additional drains can be found on the body of the Mercedes-Benz EQXX to reduce wind resistance.
It is worth mentioning that friends who are familiar with pure electric vehicles should find that all pure electric vehicle models are almost all equipped with narrow tires, such as Volkswagen's ID.3, which is such a small car, with 20-inch large-size tires, but the width is only 215. In contrast, the Mercedes-Benz EQXX is even more extreme, 20-inch low-resistance tires, with a width of only 185.
Not only that, in order to reduce the turbulence caused by the rotation of the wheels, the Mercedes-Benz EQXX also adopts a closed rim, and together with the ventilation holes on the front bracket sides and the fenders, the so-called air breather wind curtain is formed to further organize the turbulence near the front wheel. It can be said that in order to "reduce the resistance", Mercedes-Benz has achieved the ultimate.
Ah Chuan commented on the car
Back to the question at the beginning of our article, is the ultra-1000km ultra-long endurance just to make the battery capacity bigger? In fact, it is not so simple, at least in the development concept of Mercedes-Benz, in order to achieve long endurance, it is a systematic technical activity, including the overall efficiency of the three-electric system, including the lightweight of the battery pack and energy density and so on. And on the Mercedes-Benz EQXX, we do see an improvement in the battery pack. Another ultra-low drag coefficient of the whole vehicle, including low rolling resistance tires, etc., is also the key to reducing energy consumption. Therefore, increasing the pure electric endurance, this is not only "addition", but also the clever use of "subtraction".