The new battery makes electric cars no longer "arms" in winter

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Портативті электр станциясының жеткізушісі

Electric vehicles equipped with all weather batteries will be unveiled at the Beijing Winter Olympics. In the cold area, the field team testing for three years has fully verified the performance and life of this new battery. "Lithium-ion battery is not resistant to low temperature problems, has been resolved.

"This battery technology, from the National Inventor Academy of Sports Sciences, Wang Chaoyang. He is a dynamic lithium-ion battery, energy storage and fuel power lithium battery technology scientist. On November 6, Wang Chaoyang pointed out in the Tencent WE conference that energy storage technology is a key core technology to achieve "double carbon" objectives and energy revolution.

It has major strategic significance. Academician, dynamic lithium-ion battery, energy storage and fuel power lithium battery technology scientist Wang Chaoyang. Tencent We General Assembly for map battery is everywhere, new battery technology often has the key to the rise of the new industry.

However, in 200 years, the battery structure has not changed much. It consists of three materials: an electrode material, a positive electrode material, and an electrolyte separating both. This structure naturally forms two interfaces: one exists between the positive electrode material and the electrolyte, and the other is between the negative electrode material and the electrolyte.

There is a potential difference between the two interfaces, and the voltage of the battery is given. "Whether we are using batteries, the response interface in the battery has been working hard and active. "Wang Chaoyang said, this is the root cause of the battery has safety hazards and aging.

Lithium-ion batteries are very afraid of cold, electric cars may "armpit" in winter: the endless mileage is shortened, it is difficult to charge. The battery material itself cannot meet the low temperature and high activity and high temperature stability. Engineers should add a hot management system to the battery to ensure the safety of the battery.

In this way, the battery weight, volume, and cost will be added. Is there a battery, you can turn off some of the response interface when you don't work, improve safety; when you work, you will have a strong adjustment, give you the high power? The team of Wang Chaoyang has been looking for and explores the battery of the adjustable interface. They have invented a full weather tank battery, related articles published in "Nature" magazine.

The flammability of the electrolyte is not changed, nor does the thermal stability of the electrode material, and they are implanted in the inside of the battery as a heat generator. With the energy comes with the battery, plus a switch, you can regulate the activity of the battery. Even if the battery is frozen in the 30 degree environment, only 30 seconds, you can use it from heating to zero.

This technology has been adopted by the Beijing Winter Olympics in 2022, and has become one of the core technologies that drive the Olympic electric vehicle. Add a nickel foil, it sounds a fairly simple method. Wang Chaoyang told the Science and Technology Daily reporter that there is a twiguous exploration process behind it.

The team tried a variety of methods, a variety of materials: some safety poor, some energy conversion efficiency is low, there is very beautiful in the laboratory, but industrialization is still not . "After 20 For many years, my feelings are that simple is beautiful. The scientific discovery of truly practical value is the ultimate simple.

"Wang Chaoyang feels emotion," innovation should persist and perseverance, so many years, our team has been tracking battery and energy storage. "Based on thermal regulation principle, the team also invented 10 minutes fast charging battery. Wang Chaoyang believes that the application and promotion of the 10-minute fast charging battery is an important milestone for electric vehicles - fast energy can make electric car owners to get rid of mileage.

The dream of Wang Chaoyang is to take the flight to work before retirement. He pointed out that the biggest technical problem in flight is still battery. Flying cars have quite high on the battery, it must rapidly make up the battery immediately after each landing.

"At present, our experiment has confirmed the feasibility and economy of 10 minutes to recharge the battery for flight vehicles. "In fact, battery fast charge and high energy density are scientific significant problems. Wang Chaoyang believes that the true solution should be reviewed by peers, and after the issue of the scientific journal, the third party can be repeated by the third party, and then the market gives a quantitative method.

"This is reliable. "He emphasizes that batteries and energy storage are one of the most important basic technologies in the new energy era and intelligent society, and will usher in huge innovation opportunities in the next decade.