How to put safety first in domestic Tesla Model Y BIW analysis?

With the launch of Tesla's FSD subscription service in the US market, Tesla's autopilot function has been pushed to a new business model. In Tesla's FSD beta 9.0 version, the power of pure visual perception system has been seen, but Tesla's changes to the traditional manufacturing process have been ignored. What's its use? Integral die casting? With the appearance of new technology, the production mode of traditional car body will also change, so we have to look forward to the arrival of battery-to-chassis integrated battery.

Is Tesla's Autopilot automatic assisted driving reliable? With this ability, Tesla has made the driving safety level of vehicles equipped with Autopilot automatic assisted driving reach 8.66 times of the national average, and is striving to reach 10 times of the national average. In addition, all four models of Tesla have received five-star praise from NHTSA crash test.

In the nearest Tesla? T-Talk？ During the activity, we saw the white body of the domestic Model Y for the first time. What changes did the floor bring after its integrated die casting? How to put safety first in vehicle design? Let's take a look at Tesla's ideas.

Among the domestic Y-body-in-white materials, there are 55 pieces of 1300MPA ultra-high strength steel (red), accounting for18.7%; 550- 1200MPA high-strength steel (yellow) parts 1 13, accounting for 38.3%; 37 pieces of low carbon steel (blue), accounting for12.5%; 90 pieces of aluminum (ash), accounting for 30.5%.

Tesla? Integral casting? The technological analysis of the body structure of Tesla Model Y must start from the whole die-casting rear bottom plate. Tesla revolutionized its manufacturing process, using the unique 6000-ton large die casting machine of Tesla factory to inject high-temperature molten aluminum into the designed mold to realize its integrated structure.

This manufacturing process can realize the integration of 70 parts of the back floor, omitting the traditional production process of welding the back floor, and greatly reducing the production time and cost.

In addition, the mass of the bottom plate will be lighter after integral die casting. Compared with Model 3, the weight of the same part will be as light as 10-20kg, and the cruising range will be slightly increased. Coupled with its casting process, it will greatly reduce consumables, and all materials are used to the best of their ability.

The first thing that the floor can bring after integral die casting is the integrity of the rear structure of the car body. In the previous car body manufacturing process, every part was connected by solder joints. In the process of automobile collision, the position of solder joint will bear huge impact load, and the stress borne by each solder joint is also different. Even if the quality of each solder joint can be guaranteed, its technical weakness cannot be avoided.

The integral die-casting back floor will be more integrated, and the overall stress will be exerted during the stress process, which greatly improves its yield and tensile strength. According to the Tesla engineer at the event site, this die-casting manufacturing process will also be applied to the front part in the future, reducing the parts of the whole vehicle, improving the production pace and being safer.

Electric cars are safer than fuel cars? It can be seen from the Y-shaped body-in-white that placing ultra-high strength steel beams at the chassis position of the vehicle can avoid squeezing the passenger compartment and battery pack after collapse, which plays an important role in resisting the lateral structural deformation of the vehicle from entering the vehicle. This design is difficult to realize on the fuel truck, because the fuel truck needs to install the exhaust system and the existence of the transmission shaft, and there is no extra room for placement.

Because the fuel vehicle does not have this structural member, the vehicle may be depressed by 40 cm when it is hit by the side, while the Tesla Model Y with this structural member will only be depressed by 20 cm.

Tesla Model Y will install a huge battery pack on the chassis, without an engine and a traditional gearbox, which can well lower the center of gravity of the vehicle and enhance the ability to resist rollover. If you consider the next generation battery to the chassis? The combined structure of battery chassis will strengthen its integrity, and at the same time reduce the weight of the car and improve the strength of the chassis.

The front of Tesla Model Y is equipped with a front spare box, which can be regarded as an energy absorption box during vehicle collision, and the intrusion depth in front of the vehicle is in a reasonable state. In fuel vehicles, from the perspective of vehicle safety, the engine will not promote the safety of vehicles, but it is a burden, which is also the advantage of new energy vehicles in safety.

In addition, we can see that aluminum structures similar to energy-absorbing boxes are installed in the front and rear parts of the vehicle, which are connected with the structural members of the vehicle by bolts.

When a vehicle collides head-on, most of the impact load can be released, and the energy in a serious accident can be transferred outside the cockpit. As long as the structural parts are not damaged, only the structure needs to be replaced, so the maintenance cost will be reduced accordingly.

The wind vane of the industry is designed for domestic Model Y and Model 3 models, and also for the global market. There is a circular opening on the left and right sides of the front panel of the cockpit in order to reserve a position for the steering wheel and pedals, which meets the requirements of the left rudder at home and abroad and the right rudder market. In the future, Tesla will also launch a car made in China and completely designed in China.

Not only a passive safety system, Tesla is also the vane of the industry in terms of active safety, just like the 2.0 strategy released by Zero Run a few days ago, and its intelligent driving technology? Catch up with Tesla in three years? .

Tesla Autopilot's automatic assisted driving is based on computer vision, relying on the camera and radar sensor of the car body to build an assisted driving closer to human driving perception and improve driving safety in active safety.

Tesla recently began to push the FSD subscription function in the United States, letting everyone see Musk's ambition. By further improving the manufacturing process, the cost of body hardware is reduced, and the payment of software constitutes a sustainable income, which is really high!

Summary of the full text When users turned their attention to Tesla's automatic assisted driving, they did not know that Tesla was still strong in the traditional manufacturing field and made subversive innovations in the development of the industry. Spend a lot of money on models? S and Model? Y conducts research and development, decentralizes technology, and builds mass-produced Model Y and Model 3, so that Tesla's supply chain can grow together with Tesla.

In the future, Tesla will rely on its mature and advanced autonomous driving technology as its core competitiveness to carry out a larger proportion of integral casting and battery-to-chassis integrated battery, so that the manufacturing cost and endurance performance of new energy vehicles will achieve a qualitative leap. Is Tesla a luxury brand at present? But Tesla, right? Luxurious? I'm not interested in these two words, but the goal in my bones is the next one? Apple? . (Text: Yayong)

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