Electric vehicles have gradually begun to replace fuel cars as the mainstream transportation. But to this day, there are still many people who cannot accept that the charging speed is too slow, which is not conducive to the efficiency of the passage for those who use the car frequently. And how to improve the charging speed, has also become the major car companies and research institutions are competing for the object.
Recently, NASA announced a message that a new NASA-funded technology for future space missions could fully charge electric vehicles in just five minutes on Earth, paving the way for an increase in the popularity of such vehicles.
Actually it is to cool down
Pumping more energy into an electric vehicle in a short period of time is not as easy as it sounds, because more electricity means more heat, and the combination of the two means instability that could produce an explosion or other bad results.
In other words, the underlying principle to achieve faster charging is the need for a better way to cool down.
The announcement is for a project known as the Flow Boiling and Condensation Experiment (FBCE), in which NASA cools airborne electronics with a single-phase system, a subcooling element that maintains a single liquid "phase. As the name implies, the system uses two media, liquid and steam, to transfer heat out more efficiently.
According to NASA, as the object heats up, the water boils near the channel walls, forming small bubbles on the channel walls, which leave the channel walls at a high frequency, constantly pumping liquid from the inner region of the channel to the channel walls.
This heated vapor is then replaced by a coolant drawn from the inside of the runner. The vapor eventually condenses and returns to liquid form.
It seems to be difficult to understand, play car brother also do not know very well, but from the literal understanding, it seems to be a bit like the water cooling device in the computer? If there are friends who understand in front of the screen can be in the comments section for everyone science.
There is still a long way to go in the future
It is well known that many charging stations are now rated at 350 amps due to temperature limitations. And NASA estimates that this technology could increase that to a staggering 2400 amps.
It's important to know that a charging station that provides a steady current of just 1,400 amps can fully charge an electric vehicle in as little as five minutes.
The application of this new technology achieves an unprecedented reduction in the time it takes to charge a vehicle and could be one of the ways to remove a major barrier to global adoption of electric vehicles.
But playing with the car brother to remind everyone is that the prospect of five-minute fast charging is certainly tempting, but as with most cutting-edge technologies, it will take some time before it is ready for the masses.
Not only is the technology not yet mature, but also the layout and transformation of charging stations, which is the biggest problem. After all, to mass production, the cost of a single charging pile is already not low, and the country's charging pile has reached more than 4 million units, which is still very far from us.