Slow charging, short life, unsafe, what kind of power battery does the market need?
Charging for 5 minutes for 260 kilometers, the battery life and safety of electric vehicles is no longer a nightmare for consumers. With the release of high-energy fast-charge lithium battery cells, electric vehicles are expected to spread rapidly.
On June 2nd, the media reported that a Tesla ModelS was set on fire at a super charging station in Antwerp, Belgium, and was completely burned. This is at least the fourth Tesla spontaneous combustion incident in the past two months.
On the other side of the ocean, Chai Wei always pays attention to every movement in the electric vehicle industry. Is it accidental that Tesla has had four spontaneous combustion events in two months? At the moment, almost all car manufacturers are deploying new energy vehicles. What are the bottlenecks in the popularity of electric vehicles in China?
Chai Wei is the chairman of Zhejiang Volta Technology Co., Ltd. The company is mainly engaged in the research and development of automotive battery technology and battery products. Right now, will he bring a high-energy fast-charged lithium-ion battery technology to bring about industry changes?
On June 11, Volta Tech held a press conference to officially release the world's first industrialized Folta-1.2 series of high-energy fast-charged lithium-ion batteries. The battery can achieve "charging for 5 minutes, battery life of 260 kilometers", which caused great vibration in the industry.
"Consumer anxiety" in the popularity of electric vehicles
Tesla, Mercedes-Benz, BMW, Toyota, Volkswagen, Geely, BYD... It seems that every car brand is in the layout of new energy vehicles, the "new track", and is affected by factors such as "mileage anxiety" and "charging anxiety". Electric cars are still not the first choice for consumers.
It has received much attention, but it has been "card neck" in popularity. What is the reason? First of all, everyone is most concerned about the safety of pure electric vehicles. "In recent years, the cases of self-ignition explosions of electric vehicles are not uncommon. Once spontaneous combustion occurs, the possibility of survivors is extremely small. As a consumer, who is willing to put a time bomb on their side?" Sun, who has been engaged in automobile media observation for many years. This is what Mr. said.
From the point of view of the self-ignition of electric vehicles, most of the causes of fire originate from batteries. "The power batteries that have been loaded on the market are all slow-charged batteries, which are very harmful to the battery. Many people think that the self-ignition of electric vehicles is caused by short circuit. In fact, this is a misunderstanding. The self-ignition of electric vehicles is mostly because Battery material and technical defects, as well as improper use by consumers, etc., said Zhou Xiaoping, chief scientist of Volta.
Zhou Xiaoping has long been engaged in research in the fields of chemistry, chemistry, chemistry, and electrochemistry, and holds a number of patents related to lithium batteries. "The positive electrode material of the battery is fast-filled with technology, but the negative electrode material is often graphite, which is lipophilic and cannot be charged quickly. That is to say, the power battery that is now loaded is dangerous."
In addition to safety issues, the problem of the cruising range of electric vehicles is also a problem for automakers. This is also a problem for automakers. For pure electric vehicles, long-distance travel needs to be considered and considered. Much more. In addition, the penetration rate of supporting charging piles is not high, consumers install charging piles themselves, the power grid transformation is difficult, and the safety is poor.
At present, new energy vehicles have become the most dynamic sector in the automotive market. Statistics show that by 2018, the production and sales of new energy vehicles in China have reached 1.27 million and 1.256 million, respectively, an increase of 59.9% and 61.7% respectively. So, how does the electric car market need a “reliable” battery?
"Now the popularity of electric vehicles has encountered slow pains, short life, poor safety, mileage anxiety and other ‘pain points.’ If a battery can solve these problems, it will greatly promote the popularity of pure electric vehicles.” Chai Wei said.
The world's first high-energy fast-charged lithium-ion battery technology in Hangzhou
Does this "once and for all" battery exist? On June 11, Zhejiang Volta Technology Co., Ltd. held a press conference in Hangzhou, officially releasing the world's first industrialized Folta-1.2 series high-energy fast-charge lithium-ion battery technology with independent intellectual property rights.
At the scene, Vodafone also conducted a live charging and discharging demonstration of high-energy fast-charged lithium-ion battery technology. At the same time, a set of sensational data was released: for example, a small-sized passenger car loaded with 50-degree power, this technology can achieve charging for 5 minutes from 15% to 80%, battery life up to 260 kilometers; charging for 10 minutes, electricity from 15% to 90%, battery life up to 300 kilometers; for 25-degree power consumption of mini passenger cars, it can charge 5 minutes from 15% to 80%, battery life up to 180 kilometers; charge 10 minutes, power from 15% to 90%, battery life up to 200 kilometers.
According to reports, Folta-1.2 series high-energy fast-charged lithium-ion battery technology continues its mileage through fast charging, and its charging speed can be comparable to that of traditional fuel vehicles, which fundamentally solves the current slow-charged electric vehicles. Mileage anxiety. "The power battery must ensure that the cycle life is more than 5000 times in the case of 10 minutes of charge and discharge." Chai Wei said.
At present, the Folta-1.2 series of high-energy fast-charged lithium-ion battery products developed by relying on the "Lithium-ion fast-guide" material technology have completed the Folta-1.2 series of high-energy fast-charged lithium-ion batteries with many domestic vehicle manufacturers. Combined testing of battery product technology, the technology has been industrialized.
At the same time, Volta Technology also has its own solutions in the construction and development of centralized fast charging stations. Taking Hangzhou as an example, there are currently 53 gas stations in the main city, which can basically meet the refueling demand of 2 million gasoline vehicles in Hangzhou. “The national grid pulls the special line and uniformly allocates electricity. If 10 centralized fast charging stations are built in Hangzhou, an average of 20 charging piles for each fast charging station can meet the charging demand of electric vehicles.”发送反馈历史记录