In the gear of transition from one era to another, the birth of new things is always explosive, disorderly, and chaotic. Just recently, many people are talking about the flashy features displayed on the newly released models, and when they say that many smart features do not need to be equipped with gimmicks, they do not think at all that they do not know what big data is, how much real usage is used by users, or whether they can come up with solutions.
Being able to spray with a long mouth is a natural human right, but a spray without basis is no different from the shrew scolding street.
The protagonist of this article wants to talk about BYD, the only Chinese car company that can actually compete with Tesla in today's new energy era, and what level it shows consumers about new technologies and new things.
Keyword one, blade battery, whether spontaneous combustion and whether advanced
At the beginning of 2020, after the initial control of the epidemic, the first important event in the automotive circle was the technology demonstration of the BYD blade factory in Chongqing. Before that, the Ningde era and BYD just completed a network confrontation, BYD took the lead in showing the use of steel needles to pierce the blade battery, after the internal structure was destroyed, BYD battery did not fire, did not heat, did not spontaneously combust. Ningde era, in the next response is relatively low-level, to the battery set a hardness of the metal shell, steel needles did not pierce the battery at all, Ningde era also said that their battery is safe, no fire, no spontaneous combustion.
Consumers are obviously not fools, the media is not a fool, the two are better or worse in the sales volume and car companies to choose the results of the battery, the answer is obvious, BYD won. Throughout 2020, BYD's publicity focus on all new technology models is based on blade batteries as the absolute main line, and the confidence behind it is also full of confidence.
From the process of many public displays, online live broadcasts, and user + media visits, BYD blade batteries have really shown their advantages. It is indeed possible to produce high temperatures and no open flames after puncture, and there is no prerequisite for spontaneous combustion of vehicles. The solution is BYD's further control of the safety of lithium iron phosphate materials, as well as the instantaneous and extremely rapid increase of the peripheral resistance of the "penetration point" after puncture, so that the short-circuit reaction is controlled, and then there are reasons such as battery structure and manufacturing process.
However, as BYD's car sales are getting higher and higher, there are also models equipped with blade batteries that have "caught fire", which inevitably produces confusion between initial cognition and public opinion. However, apart a series of cases, BYD blade battery models such a direct summary of the conclusion is actually, 1. After the collision, there are too many variables in the related events that have been shelved for a period of time to cause controversy, such as the oozing of oil to make the ignition point lower; 2, there is no BYD model that directly and quickly spontaneously combusts, which does not meet the escape time specified by the national standard. That is to say, it is harmless to the personnel, meets the standard, and everything can be handed over to the insurance company.
Subsequently, it must be further observed to see how its safety performance is, and in view of the many variables of collision, charging and other situations, the individual safety events need to be split and analyzed separately.
Everything above is basically equal to BYD's blade battery safety performance is good. However, it should be noted that safety performance is only one aspect of battery technology, and technological progress is the next problem that BYD will face.
At the World New Energy Vehicle Conference in September 2020, Lu Zhipei, deputy director of BYD's Shenzhen Development Center, interpreted the future planning of blade batteries in detail. In 2020, the energy density of the first generation of blade batteries is 140Wh/kg and the volume energy density is 230Wh/L, and it is expected that the energy density can reach greater than 180Wh/kg and the volume energy density can reach 300Wh/L in 2025.
That is to say, BYD is ready to use about 5 years to complete the iterative improvement of the energy density of blade batteries through its own research and development. However, standing in the power battery industry, whether it is 180Wh/kg or 300Wh/L volume energy density, this is only equivalent to the upper level of ternary lithium batteries in about 2019.
In 2025, what will BYD's second-generation blade battery face? The expected answer is that if you want to achieve the same energy as ternary lithium, its volume is significantly larger and heavier, which forms a reverse cycle. If you want to use a second-generation blade battery, you have to stack the batteries to make up for the weight difference. We also have to pray that battery technology will not change much, such as the large-scale application of semi-solid-state batteries. Because, once it appears, the blade battery has changed from choosing one of the two to one of several major choices, and the status is very different.
The key word two, DM-i technology, the difference between fuel consumption and high technology
At present, another core technology of BYD is DM-i. Compared with Honda's third-generation i-MMD, its way of thinking is similar, it is a low-speed electric drive, high-speed direct drive, but because it has a stronger three-electric capability, technology research and development reserves, BYD DM-i is a good combination of PHEV and traditional HEV. And one of the most praiseworthy points is that in dm-i, in addition to the advantages of sandy technology (other car companies can not build at the same cost), the research and development of engine technology is also a big advantage (compared to other Chinese brands).
The technical advantage of DM-i is that under the same cost, other car companies cannot achieve the same technical performance. However, DM-i also has technical shortcomings, all rely on electronic control for power output distribution, insufficient data level and follow-up maintenance and other aspects of pressure, while there are high-speed road conditions under the performance does not have advantages.
In addition, in the new batch of used car markets, there are many BYD DM-i models that are about 1 year old. On the one hand, the new car is not enough to sell for the car, on the other hand, many consumers choose to sell, there are more differences and the stories behind it.
The development route of DM technology, after 3 iterations, the first generation of thinking is similar to Toyota THS, the second generation is the overall optimization of the first generation, but because there is no BSG motor, etc., the weak power / high fuel consumption after battery feeding is a technical disadvantage, and the third generation is the same thinking as the Honda i-MMD. Among them, the technical route has a more obvious change, combined with the time and speed of its launch iteration, it is inevitable to put a question mark on its data and test intensity.
DM-i's i will experience complex road conditions and different driving styles after consumers buy in large quantities, and BYD's ability to optimize firmware and shift logic software is the main focus of follow-up.
In addition, in the testing of various DM-i models, we also found another relative weakness. In the high-speed driving state, the fuel consumption data performance of direct drive is actually only the upstream level of the industry, not the top level. That is to say, those owners with a slightly more aggressive driving style cannot enjoy the benefits of low fuel consumption, unless they are aggrieved and drive slowly.
This engine is related to the basic displacement, ANDD's DM-p is also coming soon, and it is expected to make a new certification for its high-speed fuel consumption in this technology. However, it is natural to test the automatic electronic control logic capability of power distribution.
To put it simply, DM-i technology models, opened in the urban area, face toyota THS and Honda i-MMD, fuel consumption is more than 1L lower, but on the highway, the advantage is still in the hands of Toyota THS with a larger displacement. In fact, this also brought new pressure to DM-i, when Toyota/Honda further released profits in cost control, and lowered the price of the vehicle slightly.
The topic in front of consumers will become, I can buy two fields for 5,000-10,000 more, so why consider DM-i, especially DM-i, which has only experienced more than 1 year of market tests.
Write at the end:
The above two BYD core technologies, because of the launch time, have to go through more tests. At present, it can be seen that it is cheap, there is no real opponent at the same price, and it has the advantage of differentiated competition.
The pressure is that Toyota, Honda, Volkswagen, Geely, and the Great Wall can not be carried by the first to carry it after the follow-up technology upgrading and BYD enters the same market competition.
This trend has come. Volkswagen's ID has released more than 30,000 discounts on the terminal, and most car companies have been bordering or even deeply colliding because of the cost of batteries.
More and more Chinese car companies have also created their own DHT, big plugs, such as Chery put the price of Tiggo 8 PLUS Kunpeng e+ to about 150,000 yuan.
Therefore, the situation in front of BYD is not yet a big killing, and there may be new changes at any time with the follow-up changes.