First, to buy a tram is to buy a battery?
The phrase "to buy a tram is to buy a battery" should have been the view of 5 years ago, right? At that time, the situation was:
Batteries cost more: Batteries may account for nearly half of the cost of electric models under 150,000 today. This was even more serious 5 years ago, and battery costs may account for the majority.
Poor battery performance: 5 years ago, the battery life decayed faster, a good battery can be used for a lifetime, a poor battery can only be used for a few years, and the cost of replacing the battery can be too high. 5 years ago, the battery consistency was worse than now, and the so-called "endurance cliff decline" occurred from time to time, seriously threatening daily use.
Poor level of integration: The technology that groups hundreds of batteries together, car companies have gradually matured in the past five or six years. Before it matures, whether the battery will go wrong, will it spontaneously combust, and car companies will not dare to pack tickets.
At that time, whether a car's battery was good or not directly affected its service life, maintenance costs, daily travel and personal safety.
If the battery is not good, from time to time to anchor one, spontaneous combustion, who still has the heart to care about the appearance, interior, space? So buying a tram is not buying a battery?
Therefore, the view that "buying a tram is buying a battery" is not stupid and ridiculous, but the times are different and the views are outdated.
Fast forward to 2022, the status of the battery has not changed, it is still one of the most important components of electric vehicles.
The difference is that the technical level of battery cell factories and car companies has come up, and they can achieve a higher level of battery life, performance and safety, and the difference in battery level between car companies is not as big as 5 years ago.
As a consumer, it is difficult to judge the true difference of the battery between each model with a magnifying glass, so it is better to pay attention to the appearance, interior, space, driving experience, intelligence and other properties of the actual use perception.
Second, how does Xiaobai look at the battery
Mainstream electric vehicles use lithium-ion batteries, but there are still many differences. For example, the major categories are divided into ternary lithium batteries and lithium iron phosphate batteries (including BYD blade batteries); ternary lithium is divided into two categories: NCA and NCM; NCM has different formulas, such as 523, 622, 811 batteries...
Doesn't it sound like the head is bigger? Don't be afraid, we ordinary consumers buy a car, there is no need to understand so fine! Just need to understand a few big aspects!
Buy ternary lithium or lithium iron phosphate?
Popular models like Model 3 and P7 have adopted the strategy of using ternary lithium batteries to do long-endurance versions and lithium iron phosphate batteries to do standard endurance versions.
Compared with ternary lithium, lithium iron phosphate batteries are characterized by low cost, long life, and poor low temperature performance.
Low cost means that the purchase price of the car is low; the long life means that it can be charged to 100% without worrying about attenuation; the poor low temperature performance means that the northern winter should be leisurely.
These two kinds of batteries, what should I choose? Simple principle:
Travel demand priority principle: If it is only for commuting to work, travel demand is small, then even in such a cold place as Beijing, there is no need to choose ternary lithium, buy a standard endurance version of lithium iron phosphate can be; if you often drive long-distance, travel demand is long, then even in such a warm place in Guangdong, it is best to choose the ultra-long endurance version of ternary lithium.
There are home piles south of the Yangtze River: the lithium iron phosphate version is preferred, because the climate is mild, and the winter is not cold for a few days; there are home piles that can often be charged to 100%, which is equivalent to 10% more capacity than the recommended ternary lithium charged to 90%. Of course, the short endurance is not as good as the long one, but what is not good about saving tens of thousands of dollars to eat?
Northeast extreme cold areas: it is recommended to buy an electric vehicle after full research, if you want to buy it, it is recommended that ternary lithium be purchased.
2. Ternary lithium to buy 523 or 811?
When Buying a car, Xiao Bai often encounters the battery words sold, such as: "Our battery is 811, more advanced than 523", "We do not use 811 battery, because it is easy to spontaneously combust".
From the perspective of technological evolution, 811 battery research and development and manufacturing is more difficult, energy density is higher, it is not wrong to say that technology is more advanced. However, the 811 battery requires more complex battery group technology, and the energy density of the battery pack is not necessarily high; the 811 battery has more stringent requirements for thermal management, consumes more energy, and the remaining ones for consumers will not necessarily be more.
Therefore, when consumers go to choose a car to buy a car, they do not have to listen to the concepts of 523 batteries and 811 batteries, but only need to care about 3 issues:
Ask the sales: How much is your car, how much is the battery life.
Q: Is this car usually driving a solid battery life?
Q: Search for how many tens of thousands of cars have been sold and how many have spontaneously ignited.
3. Don't you buy batteries in the non-Ningde era?
About in 2019, the automotive industry has a strange phenomenon: the Ningde era is famous, many consumers have identified the Ningde era battery, if a car does not use the battery of the Ningde era, he will not buy - this is probably the ultimate of the "buy a tram is to buy a battery" trend of thought!
In fact, the Ningde era is indeed the industry leader, not only the largest share, but also the most advanced technology. Not only that, but also the introduction of new technologies that lead the direction of the industry, such as the "sodium-ion battery" technology that bypasses the limitation of lithium elements:
Another example is the "chocolate battery changer" technology that can optimize battery utilization:
Well, just like buying a notebook to buy Intel, AMD (there is no third to choose... So is it necessary to buy an electric car to buy the Ningde era?
I don't think it's necessary for two reasons:
First, after the big waves and sands, the battery cell factories that can survive are not idle people. The Ningde era is very powerful, and other battery cell factories are not bad. Before the breakthrough of the next generation of technology, the technology gap between battery cell factories cannot be closed.
Second, the development of lithium-ion battery systems to this stage in 2022, the performance, safety and life of the battery system depend more on the technical level of the car company than on the technical level of the battery cell factory - rather than paying attention to the difference in the battery brand, it is better to pay attention to the difference of the car brand.