On a car with a camera for anti-shake, what is the level of BYD Yun Nian, which can only cost more than 300,000 yuan to experience?

In digital cameras, the application of anti-shake technology has undoubtedly greatly expanded the application scenarios and usage tolerance of professional photography. Of course, anti-shake technology is not only used in photography, but also in cars. It's just that in the automotive field, this technology is not called anti-shake. The more common names we see are variable suspension, air suspension, active suspension, etc. Recently, BYD has released a complete set of cloud technology to provide a package solution to the problem of vehicle anti-shake. So today we will take a look at this set of cloud technology to see what kind of effects it can bring. The hardware is not unusual, and the top version is the full-blooded version

First of all, we need to explain the background. With the development of electrification, among the three major parts of traditional cars, only the importance of the chassis seems to have been retained. Come down. Moreover, due to the characteristics of electric drive and the kinetic energy recovery design of electric vehicles, the driving experience may even produce a stronger sense of dizziness than that of fuel vehicles, which further strengthens the importance of the chassis in new energy vehicles. . Take today's protagonist BYD as an example. Both blade batteries and three-electricity integration technology have already received extensive market verification and recognition. Only in the area of ??chassis technology, BYD's experience is almost a microcosm of Chinese brands. The inheritance of tuning technology allows foreign brands to still be in an advantageous position in chassis technology. BYD Yunnan technology can almost be regarded as an attempt to "overtake on corners" in the chassis part.

Specifically, BYD Cloud Technology itself has released versions C/A/P/X from low to high. To describe the relationship between them roughly, it can be compared to the more familiar ESP electronic body stabilization system. In other words, the "highest level" ESP system is backward compatible with ABS, BAS, TCS, etc. Of course, the two are completely different in terms of technical routes. In addition to application scenarios, the biggest difference is that even if it evolves to ESP, the operating logic of this stable system is still passive. The highest level currently disclosed by BYD Cloud Technology is to achieve active work in the true sense.

Among them, Yunnan-C corresponds to the variable damping system of the shock absorber, which realizes the damping effect of the electronically controlled shock absorber through sensors and calculation judgment. Yunnan-A corresponds to the air suspension system, and the air spring replaces our common mechanical spring structure. On this basis, the front electronically controlled damping adjustable damping system is also retained. As for the Yunnan-P, the technology tree is returned to the hydraulic structure, and the large-size coil springs appear before us again. As for the various attitude controls of the vehicle, they are adjusted by hydraulic means. In the final Yunnan-X, air springs appear again, and active variable anti-roll bars adjusted by motors form the underlying hardware. The core thing is that it can recognize the roadside through binocular cameras, or lidar systems, etc., so as to achieve true proactive chassis adjustment in advance.

We dismantle the hardware aspects of the above four sets of Yunnan technologies. Adjustable shock absorber damping, air suspension, hydraulic suspension, and even binocular cameras and lidar are not cars. A rare thing in the circle. The fundamental direction of the four sets of technical solutions lies in the computing power system of Yunnan Technology. It can be said that as the solution becomes more comprehensive and the adjustable range and intensity increase, its computing power requirements will become higher. It can be said that BYD has changed the track of chassis tuning from the traditional dealing with mechanical structures, springs, and screws to making friends with algorithms and computing power, directly bypassing the so-called tuning metaphysics. According to logical inference, the next step should be to talk about the feasibility and reliability of this system. However, the entire set of technologies currently lacks support for practical application effects. For the time being, we can speculate on the effects of the four sets of Yunnan technology installed on vehicles based on BYD's disclosure of vehicle installation prospects. And what other technical points BYD has hidden in the words of the press conference. Will Yun Nian be available for more than 300,000 yuan? The scenarios of the four solutions are different

As the most basic one in the package of solutions, Yunnan-C is also the one with the clearest picture based on the information from all aspects. First of all, in terms of hardware, the solenoid valve used to adjust damping has been integrated inside the shock absorber. In addition, BYD directly clarified that this technology can be upgraded through OTA for some models of Han, Tang, and Denza D9. In other words, these models have this system embedded in the hardware. But the point is also here. Taking BYD Han as an example, the Qianshancui limited edition and DM-p top models that can upgrade the system OTA. DM-p is better to say that, including DM-i, it is also the only version among plug-in hybrids that provides variable suspension function. However, as for the Qianshancui Limited Edition, there is basically no difference in chassis hardware between it and the Genesis Edition Four-wheel Drive Exclusive Edition, and the launch time is exactly the same, but the latter has not been included in the list of Yunnan-C upgrades. . Combined with other models that can be upgraded, such as the Tang and Denza D9, perhaps BYD has raised the value threshold of the entire Yunnan system to more than 300,000 yuan.

As for the higher-end Yunnan-A technology, it was made clear at the press conference that it will be provided to Denza N7. The air suspension plus Yunnan-C's solenoid valve adjustable shock absorber damping system can help the vehicle's stability and ground clearance to the naked eye. Likewise, the amount of suspension space occupied by this system is equally obvious.

Especially for the rear suspension, spring barrel separation is a necessary operation, otherwise the meaning of complex adjustment will be lost. As a result, the shock absorbers and air springs take up a huge amount of space, and the air tank also has to be integrated at the end of the body. Although this position will not squeeze too much space for the power battery pack. But the layout and heat dissipation of the rear motor, as well as the space design of the trunk, also pose challenges. In this regard, Denza N7 is just a medium-sized SUV. How to balance it still tests the design skills. However, the first application of Yunnan-A technology also clarifies the identity of Denza N7 as a paved urban SUV. After all, air suspension itself is not suitable for high-intensity application scenarios with frequent adjustments. Using it for hard-core actions will only lead to further reduction in reliability.

What is really reserved for hardcore SUVs is the Yunnan-P system, which is why it "reverses" and uses the hydraulic system. In fact, the technical level of air suspension and hydraulic suspension cannot be judged by naming. The latter is more used in vehicles that need to bear harsh terrain and heavy-duty vehicles. Although it is said to be a hydraulic system, from a hardware perspective, it may be more accurate to say it is a liquid-pneumatic system. This balances reliability and strength with size and weight. After all, even if the U8 is regarded as a hard-core off-road positioning, it is still a civilian vehicle after all, and the suspension adjustment cannot be carried out entirely in the same way as a tool vehicle. However, the Yunnan-X system has used the air suspension hardware again, and its application models have also become high-end sports cars, such as the U9. Relatively speaking, it is light and easy to use, while ensuring suspension stiffness, weakening the demand for suspension travel, and emphasizing the use of quantity. The core issue is still the issue of active recognition. For millions of dollars, it feels a bit petty to continue discussing binocular cameras. I believe that lidar is the ultimate hardware destination.

In short, for civilian vehicles, what needs to be considered in the suspension structure is to improve comfort and controllability on the premise of reliability, not how to jump higher or how to Rolling in the rocks. In the era of fuel vehicles, brands such as Mercedes-Benz and Citro?n have accumulated expertise in chassis over many years. In the new energy era, BYD Yunnan Technology also plans to "overtake in corners" when faced with the chassis, a large component that cannot be bypassed. However, the computing power and algorithms it relies on have changed to a different track and continued to accumulate. At the same time, the use of hardware such as air suspension and hydraulic suspension is also testing the huge supply chain capabilities behind the brand.

This article comes from Luka Automobile, the author of Yichehao. The copyright belongs to the author. Please contact the author for any form of reprinting.

The content only represents the author's opinion and has nothing to do with Bitauto