Three questions directly hit the soul. Is N7 really that awesome？

　　[car home Information] (|), a car that has been on the market for half a month but is still worth talking about. After all, before looking up to the ground, it is basically a collection of BYD’s top technology achievements at this stage.

　　Its new technology, "Fast Charge with Two Guns", attracted the comments of friends and business executives: "Cool is cool, but …".

　　Its assisted driving level is in line with the first echelon such as Wei Xiaoli Huawei, which makes Di Fen proud.

　　Its cloud chariot -A was well received, and even the well-known roll king Zhang Chaoyang commented on it as "a roll to the end".

　　　To sum up, today, let’s not talk about rhetoric, but order dry goods, and look at the three core highlights of N7, which are also controversial points-Double gun fast charging, assisted driving and cloud chariot technology,Look at the magic market with 300,000-350,000 volume kings. Is Tengshi N7 playing well?

■ Fast charging of double guns is not a technical problem, but actually a "moral problem"?

　　The media person @ 中中中中 commented on the double-gun fast charge: "This is a philosophical question whether a person can occupy two toilets at once with two bottoms. Very profound. ". I think it is very accurate, so I quoted it directly. The following is a simple popularization of this technology. Let’s see if this evaluation is correct.

　　On the issue of fast charging of pure electric vehicles, major manufacturers have rolled up the high-voltage and high-rate battery solution of "800V+3/4C battery" in unison, and the representative models are G6 and G9 owned by Tucki, which together can achieve the maximum charging time of 5 minutes and battery life of 200 km (data of S4 overcharge of G9 4C models). It is officially claimed that the maximum charging power of 4C battery can reach 480kW, and 3C can also reach 280kW (S4 super-charged pile is required).

"Publicity map of G9"

　　However, BYD just didn’t take the usual road, and put a "double-gun fast charging" technology on Tengshi N7. The "double-gun fast charging" is not a fast charging and a slow charging at the same time, but a fast charging port on the left and right and two fast charging ports at the same time. If you don’t know, you can look at the real shot of car home below.Tengshi N7 has charging ports on the left and right sides of the car body, and one side is a combination of 9-hole fast charging and 7-hole slow charging, just like ordinary new energy vehicles. On the other side is a separate 9-hole fast charge.

"One side of N7 has 9 holes for quick filling"

"One side of N7 has 9-hole fast filling port +7-hole slow filling port"

　　In terms of data, the official claims to charge 300km for 15 minutes, with a maximum power of 230kW for two guns and 150kW for a single gun. Of course, this power also needs the support of the station. You should not fantasize about the power of 150kW on the pile with a calibration of 60kW in the State Grid.

　　The technology of fast charging with two guns is not difficult to realize. The pure electric version of Tengshi D9 is equipped with this technology, but the maximum power that N7 can support has increased.Double-gun fast charging has long been applied in new energy buses, and it is reasonable for BYD to transfer its technology to passenger cars. Weilai’s wet nurse car has also used this technology. It can even plug three guns into a car to replenish electricity, which is very overbearing.

　　The biggest problem of fast charging with two guns may be "morality". This charging mode requires one person to occupy two piles. As we all know, charging piles are scarce resources. Especially on the high-speed holidays, some grumpy brothers have to scold a few words when they look at the ideal or plug-in cars occupy one pile to charge. Excuse me, are the oil in your tank and the engine in the front cabin furnishings? Let them see you take advantage of the situation. You can’t fight, can you?

　　Imagine this scene, because of the length of the charging cable, you may need to park your car between two charging parking spaces, accept the eyes of the car owners, and some good things will ask you a few words, which is simply stinging for me. In addition, there is a soul question-does ——App support double opening? This question is similar to whether a computer can log in to two WeChat, which deserves serious consideration. Of course, at present, some apps such as special calls support double opening, but some don’t. Therefore, it is recommended that you bring a lively friend when charging, which can not only help scan the code, but also charge the car owners with two guns.

　　As for the fast charging power of two guns, the measured data of car home on D9 show that the maximum charging power on a 120kW charging pile is 101.8kW when the power is below 80%, and the power drops to 55kW when the power is above 85%. Measured on N7, when the battery charge is 39%, the power reaches 176.7kW. In addition, some users actually measured that N7 was charged from 20% to 80%, and it took 21 minutes for a single gun and 14 minutes for a double gun.

"Measured data of car home on D9"

"Measured data of car home on N7"

　　We emphasize that the charging speed and power are related to many factors, such as the situation of the station and the battery capacity. Generally, the highest power advertised by the manufacturer cannot be reached, and everyone’s test data is not necessarily the same. Tesla explained this problem clearly, so you can refer to it.　　　

　　

　　To sum up, the advantages and disadvantages of "high-voltage fast charging" and "double-gun fast charging" are theoretically better than that of "double-gun fast charging", but it needs the support of exclusive charging piles and batteries, which is difficult to spread in a short time. For example, Tucki’s S4 is overcharged, and the P7 of the non-800V platform cannot reach that high power; Even the Tesla V3, which is paved more now, cannot be compared with ordinary charging stations in quantity. The fast charging with two guns can make better use of the resources of the station, and can improve the charging speed under the same conditions without modifying the station. In other words, if everyone is in the same State Grid station, the charging speed of two guns together is better than Xiaopeng G9. After all, 800V has nothing to play in this scene.

　　As for some comments on the internet, it is actually a question of "ass decides head", so you can refer to it selectively. For example, Zhao Changjiang of Tengshi once spoke out, "Charging 800V has been fooled by some enterprises in the industry." He said that BYD can achieve a charging peak of more than 700V in 2018, but double-gun fast charging can double the charging efficiency even on a 240V ordinary public charging pile.

　　He Xiaopeng and Li Xiang, who are fast charging the Party, are naturally fans of 800V, and their attitude is shown by the over-charging stations and overwhelming publicity.

　　　Shen Fei, a seemingly neutral Weilai executive who mainly changes electricity, commented that the double-gun fast charging is "in practice, it is not as convenient as expected" based on the car experience of his own wet nurse car.“Being cool is cool, but there are not many occasions that can make you cool.”。 At the same time, he also believes that the charging power is not a problem, and the voltage is not a problem. The key is "whether users have demand or not, and whether enterprises are willing to invest huge sums of money to build super-filled piles".

　　In other words, Tucki and Ideality chose to build their own overcharge station, and Weilai chose to build and replace the power station. BYD didn’t have these ideas, but also hoped that your recharge would be more comfortable and smooth, so it arranged a double-gun quick charge. Everyone is trying their best to serve the owners and help the rapid development of new energy vehicles.

　　At this point, the discussion on "double gun fast charging" has come to an end. Do you think this technology is easy to use? How does it compare with 800V? Welcome to discuss in the comments section.　　　　　　

■ city/high-speed NOA has to wait for OTA?

　　Let’s talk about assisted driving. Now, the new car-making force headed by Wei Xiaoli is crazy with rhythm, that is, about 300,000 electric vehicles must be driven with advanced assisted driving, otherwise it will not be luxurious enough, not smart enough, and it still seems to be behind the times. At present, it has been rolled into the city NOA. And BYD, in these years, has been lacking in this respect.

　　Tengshi N7 "Tengshi Pilot" can be described as making Difen proud.This fusion scheme of laser/millimeter wave/ultrasonic radar+camera+high-precision map can provide high-speed NOA, urban NOA, AVP parking service and full-scene NOA software, which is in line with the current level of head enterprises in theory.

　　　However, Tengshi N7 can’t realize high-speed NOA at present, and it is expected to be realized in Q4., including the ability of point-to-point automatic driving at high speed and handling sudden traffic jams. By March next year, it can realize the functions of avoiding high-speed obstacle cars, driving on ramps with large curvature and parking across floors.NOA driving support in 20 cities is expected to be realized next year.

　　　At present, N7 only has high-speed ACC, lane change with lights, multi-scene automatic parking and so on.. Therefore, if you want to use NOA immediately and experience the happiness of intelligent driving, we suggest choosing Tucki or Aouita. Now they can let you enjoy NOA.

　　As for the actual experience of Tengshi N7 assisted driving, please watch the measured video of car home. To sum up briefly, the basic function is great, and I look forward to higher-level functions!

More exciting videos are all on the car home video platform.

　　　Tengshi Pilot is divided into standard and high-order, which is also very common. Basically, the number of chips and sensors is different. The standard version is equipped with 5 cameras, 5 millimeter waves /12 ultrasonic radars. The chip comes from the horizon, and its functions are the ACC mentioned above. Now people generally call them "L2". The high-end version needs to spend 23,000 yuan (limited time discount) to choose and install, and gave a NVIDIA Orion-X with a computing power of 254TOPS. This chip is also an old friend of everyone and is familiar with it; As well as a camera and two laser radars, the functions include high-speed NOA, urban NOA, HPA memory parking, AVP parking service and so on.According to Zhao Changjiang, 20% of the scheduled car owners chose this set of advanced assisted driving.

　　Regarding this set of assisted driving, because it has not yet landed, everyone is concerned about some theoretical issues, such as the low-priced double horizon journey 3, with a computing power of 10TOPS. At this time, someone jumped out and said, why don’t more than 300,000 cars even give a journey 5? You see, the low match of people’s ideal L7 is Journey 5! Finally, 128TOPS! However, Double Journey 3 has also been put into use in many models, such as Nezha S and Deep Blue SL03. It is no problem to realize the basic functions, and it can be used in other places with some cost savings.

　　There is another melon. The N7 is a very rare vehicle that uses a single NVIDIA Orin-X to realize a series of high-order driving assistance functions (we have reason to suspect that dual Orin-X will be expected). At present, manufacturers that can realize NOA in cities, except for Huawei’s Wenjie and Aouita, all adopt the scheme of two Orin-X, and Weilai ES6 even rolled out four Orin-X, which is not low in cost estimation … So the N7 is in. However, in view of the fact that canoe Zhixing has been able to make a city NOA (no mass production) on a journey 5(128TOPS), I think an Orion-X (254 TOPS) is not impossible. The partner chosen by BYD is Momenta, a supplier who has worked with Zhiji and has rich experience.

　　　At the launch conference of Tengshi N7, BYD also released the "Eye of God" high-order intelligent driving system, which has several innovations, such as the integration of the vehicle’s perception and execution mechanism with software, and a set of hardware, that is, the vehicle-mounted computing platform and the self-developed software vehicle control system BOS.

　　The on-board computing platform is not just the NVIDIA chip, it contains hardware and software. We can watch the video released by BYD. The on-board computing platform is a bit like a circuit board welded by engineering students, which contains hardware and software, and the hardware integrates multiple CPUs and GPUs. There are more layers of software, and BOS is one of them.

More exciting videos are all on the car home video platform.

　　　Having said so much above, I want to emphasize BYD’s self-research ability. At present, automobile manufacturers have different degrees of participation in the self-research of in-vehicle computing platforms. For example, Tesla can develop its own operating system, functional software and even chips. Tucki has realized self-research of various functions, and some manufacturers choose to package suppliers directly. At present, a trend is that as a vehicle manufacturer, it is an ideal path to start self-research from the development of application layer software, then go deep into the self-research of system software architecture, and then develop its own special chip like Tesla to realize self-research of software and hardware. BYD has achieved self-research of operating system, which is still relatively excellent.

　　　Speaking of a thousand words and ten thousand words, the assisted driving thing is still worth seeing in the actual measurement. We also hope that Tengshi will quickly push the advanced driving assistance and prove its strength with the measured data.　　　　

■ Can Yunqi -A compare with the magic carpet of Mercedes-Benz?

　　　If you are a qualified "Difen", you are certainly no stranger to Yunxiao. In April this year, the cloud system was released.It includes four sets of body control systems with different orientations (Yunqi -C, Yunqi -A, Yunqi -P and Yunqi -X).

　　Here we focus on Tengshi N7′ s first ride.Yunnian -A, this is an intelligent air body control system.It is Yunnian -C (Variable Damping Shock Absorber) with air spring, which can change the suspension height, spring stiffness, shock absorber damping and active adjustment of seat wing. We know that the subsequent Yunqi -A supports multi-cavity air springs, and can be monitored by OTA camera and lidar, which is similar to the active sensing function of Mercedes-Benz "magic carpet".

　　In recent years, domestic new energy vehicle companies have been involved in a crazy way, and more than 300,000 vehicles can also enjoy the beauty of air suspension, such as Krypton 001 (Weiback single cavity air suspension), Tucki G9 (Weiback double cavity air suspension) and Zhiji LS7 (mainland single cavity air suspension); Coupled with the efforts of domestic products Kong Hui (ideal supply) and Baolong (supply Tengshi N7), air suspension is almost "flying into the homes of ordinary people", and people are increasingly fond of discussing air suspension.

　　Not long ago, there was a great controversy about whether the ideal L9 suspension could be called "magic carpet". The reason is that some people think that the ideal L9 system can’t scan the road conditions in advance and actively adjust, but passively adjust, which is simply touching the porcelain magic carpet. Some people think that no one has set a standard to say what a magic carpet is. Why can’t an ideal say that it is a magic carpet?Let’s talk here. Do you think N7 can compare with Mercedes-Benz’s "magic carpet" after OTA camera and lidar detection?

"The ideal" magic carpet "hangs in the air"

"Magic carpet technology of Mercedes-Benz"

　　In addition, the single/double-cavity air spring is also the focus of discussion. For example, Tucki G9 uses the double-cavity air suspension from an old foreign supplier, which gives almost the same price at once, but the ideal and momentum of using the domestic single-cavity spring N7 is shocked. Of course, from the known information, the ideal and soaring double-cavity suspension and sensing technology are working overtime.

　　The ideal engineer said well in an interview with the media, "Under the same price range, if you don’t short the spring, the product will not be competitive;" Today, when you use a single-cavity air spring, you see that others use a double cavity. Everyone doesn’t care what the double cavity and the single cavity bring to the car. Even if they are equivalent, they will feel that the double cavity has one more cavity than others, and the performance is good. It is rolled up. " In fact, we consumers should focus on the actual experience rather than focusing on single cavity or double cavity, magic carpet or CDC. The following is the driving experience video of Tengshi N7, which you can refer to or test drive yourself.

More exciting videos are all on the car home video platform.

■ A small egg-6 nm chip

　　　Tengshi N7 conference site, there is also a fun little egg-car chip. This chip is special in the 6nm process. We know that the Qualcomm Snapdragon 8155 used by high-end players at present is 7nm, while the Qualcomm Snapdragon 8295, the next-generation product used for integration, is 5nm. So what is this magical "6nm" process chip?

　　At that time, everyone generally speculated that it was a domestic chip, but later, Zhao Changjiang said in an interview with the media that it was actually a customized Qualcomm chip, which focused on the whole ecology and was suspected to be pluggable, that is, it was very convenient to replace it with a stronger chip later.

　　Tengshi N7 has six screens, which can be driven by this chip. Compared with 8155, its data also has obvious advantages. At present, some car winder manufacturers, such as Ideal, use double 8155. However, for BYD, a conservative car company, Tengshi D9 still uses Qualcomm 7325 when people are crazy about Qualcomm 8155. Such a customized chip can also show sincerity. As for the specific performance and characteristics of the chip, we expect Tengshi to be revealed slowly.

■ Edit comments

　　Tengshi N7 is a car worthy of a special book in terms of significance, products, technology and market. This paper only focuses on its three product points, without much analysis on its significance to BYD and Tengshi, and the future after entering the highly competitive Red Sea market. We also welcome more friends who are interested in this car to actively participate in the discussion in the comment area. (Text/car home Xing Yueyang)