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Filling an empty gas tank in an SUV might take five or six minutes. A new electric SUV from Chinas BYD can charge its battery in roughly the same amount of time, using one of the companys new EV chargers.Thats a major step forward. It is certainly a feat of engineering to design a battery that can handle this kind of charging speed, says John Helveston, an engineering management professor at George Washington University who studies technological change in Chinas EV industry. Tesla does not have battery technology anywhere near this. (BYDs charger has twice the power of Teslas latest supercharger.)The tech inside BYDs newest cars, which will soon roll out, can handle 1,000 volts of power. The companys new EV chargers, meanwhile, are designed to match that, so 249 miles of range can be added to a vehicle in five minutes. BYD now plans to build 4,000 of the new chargers across China.[Image: BYD]In the U.S., many consumers still say theyre hesitating to buy an electric car because of the time they take to charge. Of course, for daily use, many drivers could charge at home, and the range on current EVs is far greater than the typical commute to work. But until a shift happens in consumer perception of how to use a carand for longer-distance drives, or anyone who lives in an apartment without easy access to chargersbetter charging options could be crucial in helping EVs scale up more quickly.China is far ahead of the rest of the world on EV battery tech. Its the result of a series of different factors, including strong industrial policy support by Chinas government to build out the upstream material supply chain for over a decade now, says Helveston. (Trumps current anti-EV policy, meanwhile, is likely to push the U.S. farther behind.) Innovative companies like BYD, he says, are also at the forefront of battery science.The technological development is happening incredibly quickly. The comparison I hear is that if you have a new charging platform or a new battery chemistry, Volkswagen and BMW will say,Well hustle to put this into our systems,and well put it in five years from now. Tesla might say,Well hustle and get it in a year from now. China can say,Well put it in three months from now, Dan Wang, a researcher of Chinas technology industry and a fellow at the Paul Tsai China Center at Yale Law School, recently told Heatmap. Installing new tech is also faster. In China, it is much easier to get approvals and install chargers that can handle these kinds of high-power chargers more quickly, mostly because you only have one entity to work witha state-owned power company, says Helveston. In the U.S., by contrast, installing high-powered chargers takes more coordination between different players, which means it takes more time and ends up costing more.Chargers that use so much power could put a strain on the electric grid if theyre not managed correctly. If everyone charges at the same time when theyre headed home from work, that could be a problem. On the other hand, if some people use an ultrapowerful charger in the middle of the day, that could actually help grids with extra solar power that might otherwise go unused.As with the charging tech itself, whats happening with grid management in China could also be a model for the U.S. Certainly, it is in general better and easier to manage if most EV owners slow charge over longer periods of time, but we are moving to a future where fast charging is just going to be part of the ecosystem, says Helveston. Given the level of innovation happening in Chinas EV sector, I expect the Chinese grid to be able to develop the technology and processes to better handle these kinds of demands on the grid much more quickly than places like the U.S.
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