Hello everyone, I am the president of the Electric Vehicle Commune.
Last night, Mercedes-Benz took only a few minutes to complete the launch of the new EQS SUV. Unsurprisingly, this should be the most expensive pure electric SUV in the world.
But to be honest, this new Mercedes-Benz flagship is indeed a bit uninteresting -
It is true that the EQS SUV represents the determination of Mercedes-Benz to electrify, the space is spacious enough to be comfortable, and the screen is big enough, but it always feels that there is no special highlight.
This is not because the car is too expensive and the distance from ordinary people is a little far. But after getting used to the various epoch-making products of new energy vehicles, these flagship models with toothpaste upgrades have almost no feeling.
I don't know if everyone feels the same way.
However, compared with the EQS SUV, what surprised the company more was actually the big thing that Mercedes-Benz did a few days ago.
They first fully charged a Mercedes-Benz Vision EQXX, and then drove non-stop from their hometown of Sindelfingen, Germany, to the french town of Cassis, passing through highways, mountain tunnels and other road conditions, a box of electric driving 1008 kilometers!
The final result is also very off-cut.
After an 11-hour, 32-minute run, the Vision EQXX had 15% of its remaining battery. The average speed on the road is 87.4km/h, and the power consumption is as low as 8.7kWh/100km!
Good guys, if the average speed is close to 90 per hour, it is equivalent to running against the speed limit the whole time, and 120km/h must be the norm. I believe that the old drivers who often go out of the door know this.
And the characteristics of electric vehicles, the faster they drive, the more expensive they are.
When the president ran the energy-saving race before, a brand of pure electric medium-sized SUVs had to drive at a uniform speed of 40km/h, and the power consumption could be as low as 9kWh/100km.
Even the Tesla Model 3, which is recognized as power-saving, has a uniform speed of 90km/h to run, and the power consumption is almost 12kWh/100km! How exactly did Mercedes-Benz do it?
So after the test was completed, almost half of the big V in the car circle was forwarding, saying that Mercedes-Benz "refreshed cognition":
Of course, there are also friends who seize the opportunity and run overnight to rub a wave of heat.
However, from the comment area, it does not seem to be very harmonious.
So, is the gold content of Mercedes-Benz's 1000 km endurance test really so high?
What does this say?
Today, let's have a good talk.
01. Battery life challenge, how much gold content?
Although on the surface, Mercedes-Benz has achieved the energy consumption of EQXX to the extreme, but in fact, it is not so worth blowing -
On the one hand, it is because Mercedes-Benz has slightly "cheated" twice in this real test.
The starting point of the test, Sindelfingen, where the Mercedes-Benz factory is located, has a maximum altitude of 449 meters, while the end of cassis town is only about 100 meters above sea level, with a gap of almost 300 meters between the two places.
And Mercedes-Benz did not open the "fastest" mode, but chose a route with most plains, afraid that the altitude fluctuations are too large, affecting the final endurance performance.
According to the formula W (work) = F (force) ×s (distance / displacement), and the weight of mercedes-Benz EQXX 1755kg, it can be calculated that this downhill can save about 1.5kWh of electricity, almost 17 kilometers of endurance.
Well, it can only be said that it is a small cheat, and it does not affect the overall situation.
In addition, the Mercedes-Benz EQXX also used four Bridgestone custom Turanza Eco ultra-low roll-off tires (only 4.7), and the width was only 185mm, and the width of Shenche Wuling Hongguang was one.
The purpose of this is actually the same as the latest Wuling Hongguang, which is to reduce the grounding area to reduce the rolling resistance, thereby reducing energy consumption.
As for the problems such as the smaller grounding area of the tires, the impact on handling and driving safety, etc., everything has to make way for energy consumption.
Then some small partners will ask: Wuling is to pull goods, cheap and fuel-saving on the line; "noble" Mercedes-Benz, why should it sacrifice safety for energy consumption?
The answer to this question is also the biggest reason why Mercedes-Benz can complete this challenge:
The Mercedes-Benz EQXX is not a production car that is actually handed over to consumers, but a concept car that is close to mass production!
Since it is a concept car, Mercedes-Benz can naturally take out all the bottom of the house, and it is the kind that does not consider the cost at all.
However, through the concept car to engage in marketing, Mercedes-Benz is not the first to play like this.
As early as 2011, Volkswagen launched the XL1 Concept, which is really a model for concept car marketing.
As a plug-in hybrid A0-class coupe, the Volkswagen XL1 relies on stealing a weight as light as 795kg, a drag coefficient as low as 0.189 and a large number of exaggerated designs, so that the fuel consumption of 100 kilometers is only 0.9L!
In order to save fuel, the XL1 only uses a two-cylinder turbocharged engine with a displacement of 0.8L, and a motor to form a plug-in and mixing system, and the fuel tank is only 10L;
In order to steal light, only 23% of the body of the XL1 is metal, and the rest is all carbon fiber;
In order to reduce wind resistance, the XL1 not only adopted an exaggerated streamlined design, made the rear wheel arch into a seal, but also replaced the rearview mirror with a camera! The chassis is also as flat as possible to minimize the impact of wind on the range.
In that era, volkswagen launched the XL1 to a much more powerful degree than Mercedes-Benz now launched the EQXX.
What's more, the public lived in 2014! correct! handful! it! measure! give birth! go out! come! finish!
Although only 200 units were built, it blocked the mouth of many bar spirits, and also confirmed the reputation of "1L car".
From the example of volkswagen XL1, it is actually not difficult to see:
Wanting to consume low energy is actually very simple, and it is enough to spend money to pile up technology without scruples, as long as you have it.
02. Mercedes-Benz, is there really technology?
You don't say, there really is, and there are a lot of them.
For example, the drag coefficient of the Mercedes-Benz EQXX is only 0.17, which is lower than the 0.20 of the Mercedes-Benz EQS, the 0.208 of the NIO ET7 and tesla Model S, the 0.21 of the Zhiji L7, and the 0.22 of the Porsche Taycan.
Don't underestimate the 0.0X increase, because wind resistance = wind resistance coefficient× the square of the impact wind area × speed, and the biggest obstacle to high-speed energy consumption is wind resistance.
This 0.0X means that the wind resistance of the Mercedes-Benz EQXX is about 20% lower than that of the best new energy vehicles on the market, and it can save almost 15% of electricity at high speed!
But in order to achieve a wind resistance coefficient of 0.17, Mercedes-Benz has paid a lot. Even to a certain extent, even dignity has been abandoned:
EQXX fully curved shape design, only for aerodynamic service. As for how it doesn't look like a Mercedes, it doesn't matter.
In order to reduce the wind resistance of the car a little, the front of the car did not use the elegant Mercedes-Benz logo and the good-looking sports standard, but slightly perfunctorily used a sticker, and also pasted crooked.
This is done in conjunction with the active intake grille and rear diffuser to minimize air turbulence. This allows air to flow more smoothly from the front of the car to the sides and cut down the tail, ultimately reducing wind resistance.
But then again, this design is not something that can be achieved with only one wind tunnel laboratory, but takes into account the retro aesthetic, the wind resistance coefficient and being able to go on the road.
After all, GAC Aean has also launched a concept car called EN0.146 before, and the wind resistance coefficient of 0.146 is also known as the lowest concept car. But in contrast, the design of the Mercedes-Benz EQXX is more pleasing to the eye.
In addition, Mercedes-Benz is also doing everything in its power to steal light (it is good to have money), because light is a weapon to save electricity.
The EQXX's bodywork is almost all aluminium alloy and composite materials, and the subframe is also made of F1-class lightweight technology. The brake discs were replaced with aluminum, and even the material of the spring was changed from steel to special glass fiber, which is to be light.
And just like the bones of birds, become hollow to lose weight and fly farther, Mercedes-Benz also deliberately made a simulation analysis of parts such as the rear bottom plate and the top of the tower, and the places that do not need to be forced are all hollowed out by Mercedes-Benz!
Of course, the heaviest battery pack for electric vehicles, Mercedes-Benz also uses a lot of black technology.
The clichéd CTC technology is naturally a must, and putting the battery cell directly into the chassis can save the weight of the module and battery housing. In order to reduce weight, Mercedes-Benz even canceled the beam in the middle, and used the enclosure of the module to support the internal structure;
The battery top cover under the seat, EQXX, uses a carbon fiber-sugarcane composite material that no one has ever heard of, which is said to be derived from the F1 process. If you get closer, you can still smell the copper smell of money;
In addition, the anode material of the battery has also been replaced by silicon carbon from graphite.
In the end, the energy density of this high-density battery pack is as high as 400Wh/L, 200Wh/kg, and the weight is only 495 kg.
This means that it is 50% smaller than the size of the battery pack with the same amount of electricity, 30% lighter, and also makes the Mercedes-Benz EQXX only 1755kg in the case of 100 kWh of electricity, and the weight of a 60 kWh Tesla Model 3!
But these manufacturing technologies are not all Mercedes-Benz, but also the technology on Sandian.
This battery pack is not the current mainstream 400-600V, nor does it use the 800V of the next-generation electric drive platform, but chooses a higher voltage 900V system.
A higher voltage platform equates to a smaller current, which means a thinner, lighter harness and lower losses.
In the electric drive assembly part, although the peak output of the EQXX motor is only 180 kW, it is the result of a collaboration between Mercedes-Benz and F1 experts. Compared with the output power, its skill points are all pointed at the endurance -
After optimizing the loss of the entire drivetrain (motor, inverter and reducer), 95% of the energy of the battery pack can be transferred to the wheel, which is even more efficient than the motor of many car companies!
And for every 1% increase in efficiency, the battery life can be increased by 2%.
Therefore, Mercedes-Benz can complete this challenge, and the optimization of the wind resistance coefficient, vehicle weight and three electric efficiency is indispensable.
As for the roof solar panels, active and passive cooling systems, kinetic energy recovery, heat recovery and other technologies, although saving a saving can also increase the endurance of tens of kilometers, but it is more like icing on the cake, other car companies also have similar technology.
This time, the president will not talk to everyone more, interested in the comment area to see.
Written at the end: What is the significance of this challenge?
In fact, from the details of the Mercedes-Benz EQXX, which is still equipped with rearview mirrors, four doors, and is also equipped with door handles, it can be seen that this time is not a simple showmanship.
Mercedes-Benz really has the idea of mass-producing this car.
According to gossip, the Mercedes-Benz EQXX uses a new MMA compact pure electric architecture to build, which is the new architecture that the next generation of Mercedes-Benz EQA and EQB will adopt, and even the sedan version of the EQC may also join.
The black technologies such as silicon carbon anode, active and passive battery cooling system, multi-source heat pump air conditioning, and body lightweight equipped with Mercedes-Benz EQXX will also appear in Mercedes-Benz and other new cars of joint ventures and independent brands in the near future.
Perhaps the aerodynamic styling of these new cars will not be so pompous, but at least the design concept of the Mercedes-Benz EQXX has shown that in this era of electrification, the application of aerodynamics has become more and more important.
The continuous development of these technologies will certainly evolve into an arms race in the era of electrification.
Whoever can get these "nuclear weapons" has the ability to command the world.
But what Mercedes-Benz did not notice was that the changes in the development of the times were not only electrification, but also intelligence.
The core of intelligence is not how many screens Mercedes-Benz is best at, how big the screen is, how high-definition the screen is, and whether the screen ratio can reach 100%, but whether it can bring more convenience to people's transportation.
Coincidentally, just tonight, BMW also released a brand new flagship class, the i7 and 7 Series.
What left the deepest impression on the president, in addition to this "epoch-making" split headlight design, was the two mobile phone-sized touch screens on the back door handles.
It must be admitted that this does look advanced enough, and the sense of technology is also very strong.
But what makes the president wonder is why use a screen that is not clear to the nearsighted and easy to touch, instead of a more convenient and better voice assistant?
Perhaps this is the biggest problem that BBAas who have mastered nuclear weapons will face in the new era.
And this, it is also likely to be the reason why Mercedes-Benz fell on the altar in the new era.