10 minutes to fill an electric car! American famous school pushes new charging method: 140 ℃

According to foreign media reports, researchers at Pennsylvania State University have announced a new technology that can fully charge electric vehicle batteries in 10 minutes. Compared with the traditional fast charging technology, the new technology can greatly shorten the charging time of electric vehicle owners.

Recently, researchers published a research report in the world's top journal "Joule". The report pointed out that when lithium-ion batteries are quickly charged at an ambient temperature of less than 50 degrees Celsius, the battery's activity will quickly decrease, while at 140 degrees Celsius The high temperature continues to heat the battery for 10 minutes, and then quickly cool it, the battery can be charged with electricity, enough to support the vehicle to travel 300-500 kilometers. The battery life using the above charging method can reach 2500 times, and can support a total of 800,000 kilometers.

In terms of specific operation, a thin nickel foil with a temperature sensor is used to heat the battery. The sensor is connected to a switch that controls the current flow through the metal foil to quickly heat the material and heat the battery. Finally, the cooling operation of the battery will be completed quickly with the help of the vehicle's own cooling system.

However, it should be noted that there are certain risks in heating batteries. This practice is also currently prohibited in the industry, so the program will not be mass-produced in the short term. At the same time, the director of the Pennsylvania State University Electrochemical Engine Center also emphasized: "Increasing the battery temperature to 140 degrees Celsius will lead to a reduction in battery life. In the field of batteries, the extreme behavior of heating the battery to 60 degrees Celsius is generally prohibited. Battery and significantly shorten battery life. "

Compared with system solutions developed by Tesla and other auto manufacturers, the new program of Pennsylvania State University can be described as simple and crude, but it shows us a new idea, the charging time is shorter, and the practicality is also stronger. However, there is still a long way to go before the overly radical technical route is reached.