With what? Models? y？ As the delivery date approaches, there are more and more questions about it. Models? y？ Details were revealed.
Which is the most concerned? Models? y？ Double motor version? Environmental protection agency? Previous cruising range? 280? Miles (480 kilometers) have greatly increased to? 3 15? Miles (507? Kilometers, whether it is long battery life or performance? Version). Models? y？ Therefore, it has become the most energy-saving electric SUV in the world.
Tesla said:
Because? Models? y？ (AWD) Engineering optimization, can we maximize it? Environmental protection agency? The cruising range has increased to? 3 15 miles, while the previous estimate was 280 miles. This has improved? Models? Y as the most energy-efficient electric vehicle in the world? SUV？ Leading position.
Actually, models? y？ Not only the most energy-efficient electric car in the world? SUV, the most energy-efficient mass production in America? SUV？ (Cross-border), whether it is a tanker or a tram. Models? y？ what's up Comprehensive MPGe? How many miles can electricity run at 33.705 degrees, equivalent to? MPG) gundam? 12 1? ; For comparison, Audi? 20 19? Version? Electronic creation? what's up MPGe？ For what? 74。
Such a substantial improvement has made more and more people curious-is Tesla there? Models? y？ A brand-new engineering "magic" was applied to it?
2020? Year? 1? Month? 3 1? On the same day, Tesla disclosed? Models? y？ Photo of the production line. Die-hard fans began to analyze again and again. With the participation of more and more professional engineers, they are more and more inclined to believe that Tesla is? Models? y？ More advanced production technologies and processes have been adopted internationally-once a year? Models? 3? The "failed" and "fully automatic production" in the world! Tesla is making a comeback.
The most wonderful analysis: due to the adoption of "more advanced" production technology, model? y？ What is the solder joint ratio of the car body? Models? 3? Less? 1000? Where to? 1500. It takes 7 seconds for each solder joint; Models? y？ Only in this process will it be better than? Models? 3? Less? 120? A few minutes, that's two hours.
What does this mean? Models? y？ What will the production cost be? Models? 3? Even lower! Tesla is entering the stage of large-scale and efficient production!
However, how is it achieved?
First? 20 16? Since 2008.
At that time, Musk accepted? y？ Combinator? Interview with the founder. He said? 20 16? The biggest epiphany in 2008 was: "It is at least two orders of magnitude more difficult to realize the importance of machines that produce machines than cars!" ! 」
Musk said that because he had it? 40? Ten thousand? Models? 3? Book an order, but Tesla is still a small car company based on a niche market.
Want to change from a small company to a mass company, mode? 3? Mass production with large scale and high quality is very important. Musk must find a way to achieve this while saving costs as much as possible. So Musk said: "To increase Tesla's production speed by 20 times! 」
Musk's method is to make "machines that produce machines", that is, to realize large-scale automation of automobile production.
On April Fool's Day in 20 18, Musk released this famous picture of Tesla's bankruptcy.
However, on the first attempt, Tesla was defeated.
20 17? Arrive at the end of 2008? 20 18? The fourth year? Month, due to? Models? 3? Due to the delay in large-scale delivery, Tesla fell into the hell of production and supply chain. Musk had to admit that he had done something wrong, and let Tesla return to the standard process of the traditional automobile factory through the tent factory-relying on manpower to solve the installation of those small and soft parts.
20 18? Year? Q 1？ In the earnings conference call, Musk publicly admitted that he had made a mistake, and then said on Twitter: "The excessive automation of the Tesla factory is a mistake. To be exact, it's my fault. Humans are underestimated. " (At that time? Models? 3? Can the weekly output exceed the tent factory? 5000? Taiwan Province. )
Nearly two years later, with? Models? y？ Near the information disclosure before delivery, it was found that Musk never gave up the dream of fully automatic production in the automobile factory, and even took a big step forward in this truth.
This big step, from the information revealed, is roughly composed of three parts.
First of all, it is an integral casting car body, which is no longer welded or riveted by a series of stamped steel and aluminum parts like the traditional process. Tesla applied for a multi-directional integrated casting machine for vehicle frames and related methods (as shown above).
Through this "comprehensive casting machine", what model? y？ "What will the body be made of? 70? Parts reduced to? 1? A, greatly reducing the capital expenditure of assembling all components together. 」
Followed by a revolutionary new wiring architecture (pictured above), Tesla also applied for a patent.
Models? s？ About the harness? 3? Kilometers, model? 3? Reduced to? 1.5? Kilometers, and Tesla's goal is from? Models? y？ Start gradually reducing the length of harness to? 100? rice.
Finally, is Tesla here? 20 18? In the second half of 2006, a patent named "Structural Cable" was applied (as shown above). Musk hopes to avoid it in this way? Models? 3? The mistake made in the world-there is no newly designed structural cable and harness layout, and human beings are indeed more suitable for arranging less rigid and flexible cables than machines.
Click to enlarge and watch.
And a few days ago, IPE? Engineering? GMBH？ Engineer? Holger. Elk. It's done, right? Models? y？ Detailed analysis of production line pictures.
He thought, model? y？ The car body consists of four main parts: rear casting, front casting and BS? Asm？ LH (left body part) and? BS？ Asm？ Right side body assembly. ) and of course the skin. Panels and other parts.
In other words, a model? y？ The car body may be composed of two huge castings, one of which is used to fix the powertrain, which will be stronger.
Click to enlarge and watch.
Further analysis, holger? Elk. Think? Models? y？ The car body is made of blank stamped steel plates customized by HSS (high strength steel) or UHSS (ultra high strength steel). Because of its high tensile strength, the panel can only be formed by hot pressing. Therefore, obvious heat marks can be seen on the skin of the panel.
The upper part? Answer? On the other hand, it seems that the pillar and roof rail parts are made of separate pressed parts and then welded to the rim plate of the door to form the final side of the car body.
The main casting is the rear body.
"The rear body is a super-large casting, including a long member, a cross beam, components of the power system, all mounting points of the hub cover, and the geometric shape of the rear body is also defined? x？ /? y？ /? Z coordinate. 」
Does the casting contain. c？ Steering column and extending to the rear roof cross member.
Elk. After estimating, he said: "The casting process must be very advanced, because the size and weight of the castings are too large and have never been seen before. And such casting should be carried out on a cold chamber pressure casting machine with vacuum support? HPDC (high pressure die casting) is completed to avoid casting defects such as holes, bubbles and cracks. 」
He roughly estimated that the weight of the rear structure is about? 40? Where to? 45? Kilograms, and Audi? A8？ What is the weight of the post-cast member? 10.5? Kilogram.
According to German experts, only a few suppliers in the world have manufacturing capacity? 4.000? Or at most 5.500 km? Experience in using a ton of cold chamber casting machine with clamping force. So Tesla's machine must be specially customized and huge. What is the maximum annual production capacity? 15? Ten thousand parts.
Elk. Finally, two sets of data are given. Except that the welding points we applied for at the beginning will be better than? Models? 3? Reduce? 1000? Where to? 1500? Besides, he still thinks? Models? y？ Will there be fewer production lines than traditional manufacturing processes? 40%? This process.
This is a terrible number. Is it necessary for Tesla, which is in a leading position in the fields of power generation and autonomous driving, to beat the traditional automobile factory in the mass production process? Jane. Great history? Become a "machine that produces machines"?
I believe Tesla will definitely give an answer soon, and Tesla Giga Shanghai? Models? y？ Workshop, also a high probability will adopt this more advanced production technology.
(End)
Source: First Power Grid
Author: Electric Planet News Crab Boss
This article comes from car home, the author of the car manufacturer, and does not represent car home's position.