Low temperature testing is a project that must be faced in the development of electric vehicles.

Generally speaking, almost all power batteries will be affected by low temperatures and have problems such as reduced range and low charging efficiency. However, due to the battery characteristics of different attributes, the degree of impact is slightly different. After all, this is determined by the characteristics of the battery, because in a low temperature environment, the electrolyte becomes viscous, the chemical reaction inside the battery becomes slower, and the discharge current becomes smaller, resulting in a decrease in the available capacity of the battery and a low charging efficiency.

Even though internationally, various research and development of lithium battery systems for electric vehicles have been carried out in recent years, the materials and characteristics determine that the battery availability is greatly reduced at low temperatures. This is a global problem. In this regard, domestic companies are actually very high in terms of batteries, electrolytes, etc., and are even better than many foreign companies.

And the royal blue car that was flying in the snow and ice was transported thousands of miles to the extreme north to Sarihald to carry out battery adaptability concept.f in extreme weather.

Among the people who recorded the test data, including the project R&D personnel of concept.f, including the engineers of the emp-ultra-micro electric vehicle battery R&D laboratory, closely monitored and recorded the overall data of the vehicle battery through professional instruments installed in the battery system of the electric vehicle.

"Real-time temperature -27℃, this full-power driving has a total range of 335km, and the loss rate of power is nearly 25%..."

When the originally speeding concept.f used up his last bit of power and slowly stopped in the snow and ice, a data recorder loudly reported the results of this test.

"This is the fifteenth consecutive test in these days. After testing under such severe cold conditions every day, although the battery is squeezed until the oil is exhausted every time, it is obvious that the battery's service life is not attenuated, and the test results have always been relatively stable..."

An engineer from the Battery Laboratory compared the heavy data from a while ago and then came to a conclusion.

Although it is a bit too early to draw such a conclusion, after all, it only took fifteen limit tests, these engineers with rich experience can still see the essence through the phenomenon and make judgments in advance.

Since the successful battery development in late June, concept.f's project R&D personnel and battery laboratory engineers have traveled almost all over the country, leaving their test footprints in various places with complex terrain. In this cold Russia, it is the last stop for performance testing.

According to their test results, the ternary lithium battery developed by the Battery Laboratory, combined with the battery management system developed by emp, can achieve the maximum range of concept.f to 441km. Of course, this can only be achieved under very ideal road conditions and surrounding environments. Under the general total road conditions, the average range of 417km can be achieved.

Although ternary lithium batteries are only the first generation of products developed by the battery laboratory, they have various shortcomings. For example, in the cool cold test just now, the battery capacity loss rate reached 1/4, but such conditions are more extreme after all. Overall, for the performance of the first generation of products, both concept.f R&D personnel and battery laboratory engineers are satisfied with this, which has reached the initially designed numerical standards.

Relying on concept.f's large-capacity battery pack, it performs very stably in the 0℃ test environment, with an average range of 412km, which is basically not greatly affected by low temperatures, and during driving, it will not sacrifice motivation and driving pleasure at all.

Even though the current emp still has various shortcomings and shortcomings, it is undeniable that through the step-by-step progress of the concept.f project, the overall technology of emp has been developed in a leap forward, and in this process, considerable experience and a large amount of valuable experimental data have been accumulated.

If the emp at the time was just a powerful player in the domestic electric vehicle market, then now with the emp as support and development of electric vehicles, the other competitors have been left far behind in the technical level.

"This ghost place really freezes to death!"

The driver in the car came out of the cockpit and stomped his feet. He felt a cold wind constantly entering his clothes, making him tremble involuntarily, subconsciously wrap his clothes tightly, and then cursed helplessly.

I drove more than 300 kilometers continuously. Even though there was no road restrictions here and I could gallop as I wish, I was still quite mentally exhausted after this test.

"And, just be content. At least there is warm wind. Look at how we are frozen!"

Hearing his words, a staff member on the side looked up at him, curled his lips, and said with some dissatisfaction.

His fatigue is only mentally. You should know that in the car, it simulates the real car use environment, such as heating air, radio, etc., it is turned on until all the power is used up before it is completely turned off. Compared with him, those engineers who stayed in the ice and snow for two or three hours, and were so cold that they wanted to silence, he was much happier.

What's more, after a round, he can take advantage of this opportunity to take a short break. The hard-working staff also have to push heavy high-power generators and experimental charging piles to test the relevant data on fast charging in such extreme weather, and they don't get any chance to rest.

"Haha, thank you for your hard work! Why don't you get a cup of coffee to warm up?" The driver suddenly realized that his words had accidentally aroused public anger. He quickly apologized, hesitated for a while, and then squeezed his eyes at the engineer: "I have the best vodka here, which is an authentic Russian product. I brought it from the city a few days ago, let's have a bite?"

"Go, you'd better keep it yourself, just be more at ease, don't drink too much and get drunk and break the car!" The engineers were not really angry. After hearing his words, they just laughed and cursed a few times, and then continued to lower their heads and do their own things.

No matter what, no matter how much you complain, you still have to do some work seriously. Who told them to do this?

The advancement of a technology and the birth of an achievement are often supported by the hard work of countless people and the support of thousands of data.

In the extreme cold, it was not only the discharge problem of the battery pack, but even the charging became longer. It was originally possible to complete 80% of the power in half an hour. This time, it took nearly twice the time to see the staff pull out the charging pins.

"Okay, let's go!" The driver moved his frozen body for a moment, shouted, and then trotted into the cockpit. Then, the royal blue car once again galloped in the snow and ice...

Today's third update, the miraculous code is over! As expected, I said that I can do it if I work hard!

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