Car building has become a cake on the tip of the knife, and everyone wants to eat it.
Since the development route of electrification was determined after the emission gate incident, the Volkswagen Group has become enthusiastic about the launch of the electric concept.
In recent years, the e-tron has become the standard suffix for almost all Audi-branded concept cars.
A few days ago, Audi also officially released the new A6 Avant e-tron concept car, which will become the prototype of the concept of a new generation of Audi A6 in the future.
The most attractive concept of this Audi A6 Avant e-tron is the 800V high-voltage charging system and the 270-kilowatt charging power.
This means that the car can complete a range supplement of about 300 kilometers in 10 minutes. In the pure electricity segment of energy replenishment anxiety, it is undoubtedly the existence of breakthrough significance.
Low wind resistance
In the long process of Audi's competition for share in the luxury brand field, aerodynamics has always played an important role.
In the early years, the Audi 100 achieved a drag coefficient of 0.3 thanks to its excellent aerodynamic design.
It is precisely because of the blessing of the low wind resistance design that the Audi 100 has successfully sat on the top seat of China's luxury cars after coming to China.
In the era of new energy, the wind resistance coefficient is paid more attention.
In a station wagon configuration, the new Audi A6 Avant e-tron concept uses a wide roof line to optimize its drag coefficient.
From the data point of view, the Drag Coefficient of the Audi A6 Avant e-tron Concept is only 0.22.
If Audi is not exaggerating, then this drag coefficient is the lowest presence in the concept car that is closest to the production model.
In terms of size, the Audi A6 Avant e-tron Concept has a body length of 4960 mm, a body width of 1960 mm and a height of 1440 mm.
Purely in terms of size, it is already close to the level of the mass production car, which is consistent with the Audi A6/A7 series at this stage.
Stylistically, the Audi A6 Avant e-tron concept also got rid of the image of a traditional station wagon.
Although it is still a low and slender design style, the body part is obviously heavier than the traditional station wagon, and the size between the window sill line and the sill is enlarged.
From the perspective of the hard point configuration of electric vehicles, this change is also in line with the characteristics of the bottom battery of electric vehicles.
In other words, the Audi A6 Avant e-tron concept car released by Audi this time is really thinking about what an electric car looks like in terms of shape and proportion.
As for the design of the details, the Audi A6 Avant e-tron concept car is similar to the design language of the Audi family at this stage, with a polygonal large-mouth air intake grille as a continuation of the brand gene, and the two sides of the intake grille reserve large-sized air intakes, and the headlights only echo it.
After these details are enlarged, it is the appearance of the Audi Q6 that has just released the announcement map.
The rear of the vehicle is a penetrating taillight and an exaggerated rear diffuser design, and it is worth noting that this diffuser features an element similar to the exhaust pipe.
The design impact of the low wind resistance on the rear of the Audi A6 Avant e-tron concept is evident.
Obvious diversion characteristics can be seen from the features of the upper edge of the rear end, separating the air flow as much as possible backwards, and the two exhaust pipes of the rear diffuser are actually characterized by reducing turbulence to guide the air flowing under the vehicle in a way that reduces turbulence, achieving the effect of reducing air resistance and reducing high-speed lift.
The lower wind resistance also brings lower energy consumption and longer range to the Audi A6 Avant e-tron concept.
PPE architecture
The new Audi A6 Avant e-tron concept car is based on the PPE platform, a new electric vehicle platform led by Audi.
The dimensions of vehicles, batteries and wheelbases under the PPE architecture are retractable to suit the needs of models in different market segments.
In order to solve the problem of proportion caused by the relatively long wheelbase and the relatively short front and rear overhangs, Audi has also enlarged the size of the wheels on the models of the PPE platform architecture, so that the models under this platform can also have perfect proportions.
Inside the vehicle, the ride space will directly benefit from the design of the long wheelbase.
The key to the PPE architecture is the battery module between the front and rear bridges.
In the concept demonstration of the Audi A6 Avant e-tron concept car, the module can store 100 kWh of electricity, while the entire floor of the vehicle can achieve a flat battery pack layout.
This means that the Audi A6 Avant e-tron concept car can achieve relatively high ground clearance and lower travel height without changing the basic structure.
Although the PPE platform does not have a central channel, Audi has not given up the brand tone of the iconic quattro full-time four-wheel drive.
The PPE platform realizes the drive form of full-time four-wheel drive through the structure of electric four-wheel drive.
On the Audi A6 Avant e-tron concept, the motors on the front and rear axles deliver a total output of 350 kW and a total output torque of 800 Nm.
800V
Although, there are more and more cars in 800V, but 800V Audi, this is probably the first one.
The core concept of the Audi A6 Avant e-tron concept car, which is also the core concept of the PPE architecture, is the 800V high-voltage fast charging technology.
This technology ensures that with the help of fast charging facilities, the battery pack can quickly achieve a charging power of 270 kilowatts, allowing the vehicle to quickly complete the mileage replenishment.
PPE's high-voltage fast charging technology enables it to achieve a battery level that provides vehicles with a range of more than 300 kilometers in a refueling time close to that of a fuel vehicle, that is, within 10 minutes.
In 25 minutes, it is possible to complete the power supply of a 100 kWh battery pack from 5% to 80%.
Low wind resistance and efficient power management make the Full Power Range of the Audi A6 Avant e-tron Concept reach 700 km, which is basically the same as that of fuel vehicles in terms of range and charging time.
From the perspective of application scenarios, it is basically consistent with ordinary fuel vehicles.
As an electric vehicle, it can complete zero hundred acceleration in less than seven seconds, while the high-performance version can be further compressed to less than 4 seconds.
In fact, it is not only Audi that is concentrating on the development of ultra-high voltage charging technology, but also released 800V ultra-high voltage charging technology at last year's Guangzhou International Auto Show.
Compared with the current stage of charging equipment, ultra-high voltage charging technology can indeed quickly compress the charging time, but it also puts forward new requirements for charging facilities.
Because the charging voltage is too high, the ultra-high voltage charging pile must be equipped with an energy storage box, otherwise, such a large charging power, the power grid can not withstand its load.
This means that while new technologies are being released, it is also necessary to further improve infrastructure construction.
The emergence of the Audi A6 Avant e-tron concept car, the most eye-catching is the design idea of low wind resistance.
In addition, at the level of designing electric technology, Audi is not really at the forefront of the industry, at least, it cannot keep up with the pace of new domestic brands.
Obviously, the besieged Volkswagen Group has sounded the clarion call of counterattack of new energy.......