When I attended the press conference of Avita’s extended range two months ago, I shared one of Avita’s views on fuel tank and battery life on Weibo.
At that time, some readers in the comment area jokingly left a message saying that they hoped to have a pure electric car with a range of 500km and a comprehensive range of 1000 km.
Unexpectedly, the Ningde era realized this reader’s wish today.
Today, Ningde era officially launched Miaoyao mixed battery, which is also the third battery brand launched by Ningde era after Kirin and Shenxing battery.
There was not much nonsense at the press conference, so Wang was blown up directly.
The 400-kilometer pure electric endurance was put a few years ago, which may be the maximum range of a pure tram.
At present, the mainstream additional car on the market, the pure electric range is only about 200 kilometers, and there are only a few models, such as zero running C11 and Nezhan L, which extend the range to more than 300 kilometers.
Ningde era launched batteries specifically for extended range and hybrid models this time, and the reason and intention are also obvious: in the past, everyone said that extended range is a transitional product between fuel cars and pure trams, and it is a backward technology.
but the increase in pure electricity shipments last year was 18%, does it seem to have performed quite well? , while the increase in the extended range is 109%.
Just like the talent show in the big fire two years ago, everyone really voted so that the program group, which originally wanted to determine the champion, had to tilt its resources to the dark horse contestants.
Nowadays, the extended range market is so hot that it must be regarded as a separate category, so Ningde era did not hesitate to make special battery for extended range.
Ningde Times also has a clear division of the positioning of the additional range vehicles in the coming year: about 100000 of the A-class extended range vehicles have a pure electric range of about 200km.
15-200000 of the B-class extended range cars have a pure electric range of about 300km.
25 or more high-end extended range models have a pure electric range of 400km.
And Ningde Times said: in the future, the threshold of pure trams is 500 kilometers, and the extended range and pure electricity will be divided equally.
If we really follow the trend of the Ningde era, the party members will obviously win.
In an interview after the press conference, Luo Jian, CMO of Ningde Times, made it clear that mixing cars is not a transitional solution, especially for female users, who do not want the car to lie down outside.
So the Ningde era put a lot of effort into the Snapshot battery this time, because logically, the battery of the extended-range car is very different from that of the pure tram: pure trams are not likely to be sold to remote areas.
and basically will not continue to drive “violently” below 10% of the electricity, but everyone who drives an extended car obviously has its own “poetry and distance, rock and roll and passion”.
So the extended range battery has several difficult problems that need to be overcome: 1.
The coverage of the whole scene, the life of the battery cycle and the discount rate of electricity can be controlled at low temperature.
Need to be able to stabilize the output at low power. 3. Because the battery capacity of the extended range car is low, and the battery is charged and discharged frequently, the cycle life should be 3-4 times longer than that of the pure tram.
Does it sound like it’s starting to get big? Don’t worry, I believe the product manager of the Ningde era suffered more pain than your head when he saw these problems at that time.
So they brought in reinforcements– sodium ions.
In the Snapshot battery, Ningde era adopted the method of mixing lithium and sodium to solve the above three problems.
The first is the trickiest low temperature.
As we all know, the northeast in winter is a nightmare for electric cars.
The reason is that it is so cold that people need heating, not to mention batteries.
Lithium iron phosphate and ternary lithium batteries cannot withstand dozens of degrees below zero because of the “physical” problems of lithium ions.
In this environment, the viscosity of the electrolyte increases, or even partially solidifies, and the electrical conductivity of lithium ion decreases.
Finally, not only the performance of the battery will decline, but also the charge and discharge capacity will decrease very quickly.
So you can often get a short video of “the electric car can’t be unlocked or the machine is frozen” on the Internet.
In the Ningde era, if people in the northeast wanted to drive electric cars, they naturally needed to solve this problem.
Sodium battery is its best rescue.
The viscosity of sodium ion is lower at low temperature, which can reduce the resistance of electrolyte and the electrical conductivity is higher.
The Ningde era integrated the lithium battery and the sodium battery in the same battery package, and the nano battery is resistant to fabrication at low temperature, and the electrochemistry is more stable, so it will be arranged around the battery pack to go to its more familiar low temperature zone and act as a moat.
Let the more expensive lithium battery in the middle, continue to bear the important task of output performance.
Because sodium batteries are cheap and lithium batteries are expensive, they can be flexibly customized according to their needs and costs, which can be said to kill two birds with one stone.
In fact, this is not the first time that this kind of mash-up has been done.
Before, ternary lithium battery and lithium iron phosphate battery have been used before.
It sounds simple, but in fact, the running-in process of sodium ion and lithium ion needs a lot of experiments and data to support, and the Ningde era has also made a more accurate BMS algorithm.
It’s just that the Ningde era not only uses sodium ion as a low temperature guarantee, but also uses it as a SOC detection yardstick for battery power.
Originally, it was very difficult to know SOC accurately, but now the addition of sodium ion has improved the whole accuracy of system control, and pure electric range can be increased by another 10 kilometers.
You may want to ask: why not use such a good thing earlier? Because lithium ions were previously used in high-end electronic products, “high power, small size” is the advantage they pursue.
Therefore, we all focus on lithium ion, and then in the study of sodium ion, we mistakenly copy the research route of lithium ion, resulting in the advantage of sodium ion has not been brought into full play.
However, it is never too late to have a good meal, and now the theoretical research and the selection of new materials have reached a new level.
Previously, the Kirin battery focused on long battery life, while Shenxing overcharge battery focused on fast charging, this time Snapremote battery absorbed the advantages of the two big brothers, not only achieved the long life in the hybrid car, but also attached a 4C overcharge function.
In the case of a pure electric range of 400 km, it can be recharged for 10 minutes to replenish 280 km, which can completely make the engine feel at ease in life.
Moreover, whether the product is good or not depends on whether there are many suitors.
This time, the number of new car companies and models, including ideal, Avita, Deep Blue, Changan Qiyuan, Naha and other brands of 30 models will be carried.
Interestingly, the conference also “inadvertently” revealed that Zhiji will use extended range and Snapshot batteries for the two cars next year.
There are fewer and fewer pure electric players.
Although the extended journey is a little bit like the trend of the times, but Beijing and Shanghai have always been people they wanted but couldn’t get.
But if the extended range really reaches 400 kilometers or even higher in the future, on the same level as many pure trams, will the north be willing to give the extended range a green card? I wonder what you think of the general trend of extended range? How many kilometers do you think is the best range extended vehicle? Welcome to communicate in the comment area.
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