With consumers’ recognition of electric vehicles, there is more and more electric vehicles on the domestic market.
If we want to buy an excellent fuel car, you may consider the product factors that everyone is well known, but exchanged How should an electric vehicle choose?
Or when the electric vehicle above two or 130,000 yuan is selected, where is its value? What should I refer to when purchasing a high-end electric vehicle?
On February 3, NetEase live broadcast has launched such a scientific tax-driven car, and dismantled on the spot. Extreme Fox Alpha T and Wei Si ES6 two markets focus on high-end electric vehicles.
and also invited electric vehicle related professional guests to participate in explanations, with the way of Ding Ding cows, revolving science interpretation around electric vehicle core components, body structure, etc., let everyone have a chance I really understand where a high-end electric vehicle is.
Double synchronous motor is stable and light Quantified balance
[123 】 Just as we value its engine when purchasing fuel vehicles, the electric vehicle is equally important for electric vehicles as a power source, and the quality of the motor determines how far the electric vehicle can go.
The motor used in the current market is mainly two kinds of permanent magnet synchronous motors and communication asynchronous motors.
As a polar fox alpha T, the Double permanent magnet synchronous motor is used, The motor power reaches 160 kW, the torque reaches 360 nm, and the performance is very eye-catching in the domestic class model, and the 0-100km / h acceleration takes only 4.6 seconds.
Its power assembly is jointly created by Siemens, Fareo, Borg Warner three international top enterprises, using the latest international three-in-one high integration technology solution, The weight is lighter and the volume is smaller. At the same time, two synchronous motors are used, and there is also the advantage of ensuring the consistent control system before and after the vehicle, which reduces the difficulty of the vehicle control.
For electric vehicles, these are basic factors that make it more efficient and run more far, and the electric machine assembly of Alpha T is very good. Lightweight, volume and efficiency performance, so it can provide excellent daily use.
The whole vehicle is used by 蔚 来 ES6 The front permanent magnet rear asynchronous motor configuration.
Everyone knows that in terms of asynchronous motors, Tesla has always been faithful users, because the AC asynchronous motor has good performance, simple structure, strong durability, and more important It is to avoid dependence on rare earth resources (as a foreign brand, in consideration of whether the source of raw materials is sufficient when using the motor), and the choice of us is mainly considering the cost of use and the performance of the motor.
This motor can bring 400 kW of integrated maximum output power for ES6, which is more powerful.
However, because the motor components are not shared, the development cost and component cost is higher, and the control system also needs to match the same. In terms of weight, its asynchronous machine is output from the same specification.The synchronization machine is slightly around 20 kg.
In addition to the motor, this dismantling can see the Alpha T high-pressure control box (PDU) layout is also very characteristic, Higher integration, distribution box, charger, DCDC and other integration, fixed in power assembly, this advantage is that the energy density is high, the size is low, and the weight is low.
Type ES6 uses a traditional layout, but it is expected that it may also adopt a larger integrated design in the future. .
lithium battery is a recognized mainstream The two cars have a characteristic
As the core components of the new energy vehicle, the problems of their security, practicality, and life, etc. have been readily attached to the industry, and this is also one of the most concerned issues when we buy a car.
At present, the car battery pack is mainly a three-dimensional lithium battery. The improvement of battery performance is mainly in the formula and material of the three-dimensional lithium battery.
Among them, the Alpha T uses SK’s NCM811 soft bag battery, which facilitates the reduction of the overall weight of the body, and the battery core uses high power positive material, advanced Negative electrode toner technology, new low-density high conductive electrolyte technology, ceramic diaphragm technology, low temperature discharge better.
In cooling, the car uses a liquid-cooled structure that allows the battery pack to keep the battery pack in a reasonable working environment whether low temperature charge or discharge.
And the heat management system of Alpha T is an integrated design, which is directly designed on the battery cabinet floor structure, such as a component “one-purpose” The space in the battery pack is greatly saved, and the system weight and contracting are also reduced, and the genericity of the components is increased.
The energy density of the battery system reaches 194WH / kg, the battery pack is 93.6kWh, and 600 kilometers of NEDC endless mileage can be provided on the four-wheel drive model. Renewal can reach 653 km.
Type ES6 uses NCM811 batteries in Ningde Times, the energy density is also relatively high, not only supports DC fast charge and communication slow Charge, the maximum feature is to support power generation, replace the power battery pack of different power.
Currently, it has begun to provide 100KWH large-capacity battery pack. The battery pack is the highest-capacity battery pack in the domestic market. According to official introduction, loading the battery After the group, the NEDC endless mileage of the ES6 can reach 610 kilometers.
ES6 rapid electrical transmission structure detail
in cooling Aspects, the ES6 battery pack uses a water-cooled module and a battery control unit different from the Alpha T. And this water-cooled system supports the later battery upgrade, which is a stronger battery in the future, and can be replaced directly.
Overall, Alpha T and Wei Si ES6, two batteries structure design have their own highlights, especially in terms of structural security, both battery packs use aluminum Layout, with a strong housing, adhesive rivetingThe extrusion of more than 10 tons will not cause battery damage, so high-strength battery collision protection will make users more assured when using.
body [ 123] Rurple ratio
Rolls
High torsional stiffness
In addition to the core technology of the three-power system, the body safety is also the factors that need to be concerned when purchasing electric vehicles.
The Alpha T body structure consists of steel-aluminum mixed body, consisting of a cage frame structure enclosed by high strength steel, and the cage structure is most The key in the column, B column, etc. use high-strength thermoformed steel, and the intensity is 4 times that of ordinary high-strength steel, which can withstand a pressure of more than 15 tons per square centimeter.
Alfa T uses 43% of aluminum alloy material, mainly in the vertical beam, front cabin, back door, threshold and front and rear Deconsthesia, etc., which takes more consideration of lightweight and pedestrian protection. According to reports, Alpha T’s body torsional stiffness reached 50,000 nm / deg, even higher than the Pharmacy of Rolls Royce.
Type ES6 uses a whole aluminum body, body outer cover, and body structural parts are made of aluminum alloy. Of course, you should mention it, even aluminum is not a class of aluminum, the vehicle will select the appropriate material according to different locations.
Further, by disassembly, I can see that Alpha T is equipped with a cross-sectional size. The pre-collision beam can absorb collision energy at a low speed collision. Integrated calf protection beam structure and effectively protects pedestrian safety. Provide multi-point installation, closely connect, improve the vehicle mode for the front end frame.
Type ES6 also uses 6 series aluminum alloy materials, more materials, and also effective protection in collision Take safety.
The two cars use an integrated stamped door, and the aestheticity of the vehicle is guaranteed to ensure the aesthetics of the vehicle and NVH
The whole dismantling process makes people still don’t have to do it, and it is generally, it is a head player for the new forces. Whether it is three-electric technology or a body chassis such as the body, it is impressive; T as the first mass production model of the polar fox brand, but also let everyone see the excellence of the manufacturer in quality and materials.
I believe that through this dual-car disassembly, consumers have a deeper understanding of high-end electric vehicles, and a good electric car is not only a stacked. Scientific and technological configuration or luxurious interior, where you can’t see it, these electric vehicles will be best.
The dismantling of this time also made us have a stronger confidence in China’s brand electric vehicles, Alpha T and Wei Si ES6 is really worth buying in their respective prices. Electric cars, whether performance technology or materials, are not better than those foreign brands. [Writing | Little Magic]