JFE Engineering Reveals Quick Electric Car Battery Charging Station
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JFE Engineering Corp has developed a new electric car charging system that provides a quick battery charge in a matter of minutes. The JFE quick charge will give your electric car’s battery a 50% charge in just 3 minutes on the plug.
One significant hurdle of the impending electric car economy is the inability to quickly charge an electric car’s battery. Electric cars and plug-in electric hybrids have different ranges of travel before their battery will run out of juice. While a driver could just pull up to a gas station in their internal combustion car, this isn’t so easy with an electric. Some have suggested battery swapping stations, and until this point the alternative has been a very long wait at a recharge station until your car is ready to hit the road again. Compared to older methods of recharging, however, JFE Engineering Corp has produced a charging station that’ll give you 50% of a charge in just 3 minutes flat, a technology that could spread electric car infrastructure throughout our nation’s roadways.
The JFE Engineering quick charge system won’t come cheap, but does have its price advantages. A single charging station will $63,000, which is still less than most of the competition, but could be a tough hurdle for a smaller gas station. The system runs off of a traditional electric power source, which means that fueling stations will not need to invest in further infrastructure to power their system. The main drawback to JFE’s quick charge is that it requires modifications to an electric car’s software and systems. This means that JFE’s system is not standardized, which could present incompatibility issues for part of the world’s electric car fleet.
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Hmmm… Let’s examine this proposition, shall we? 50% SOC in three minutes. If we are looking at a 25kWh pack, then 50% of capacity would be 12,500Wh. For that much energy to be delivered in three minutes, 250,000kW would be the average power on the charging bus. If we assume a 300VDC battery pack, the average charge current would be 833A. I’m not saying that cannot be done, but it would require some highly specialized equipment. I do not believe your average, run-of-the-mill EV could handle that much current.
Smart insight, Ebikeguy– I appreciate the due diligence over this company’s claims. One thing I didn’t add in the article is that JFE Engineering’s quick charge stations run off of batteries charged by the standard electric systems of a high-use fueling station. So those batteries are charged either 24/7 or during peak hours, meaning there is more charge available than just what is provided by a direct connection to the grid.
If your math is correct (and it’s safe to assume it is), this would mean that JFE’s system could possibly provide the charge they claim, but it would not be scalable to high demand as currently planned.
Charging at 833 amps ins’t a problem if you have the right equipment. I would imagine the power would come into the car as 3 phase 480v and then get converted by an on board charger. Granted, 250kw is a lot of power, but there are 1000′s of applications that use this much power today, so that shouldn’t be an issue.
Now, with a 300vdc pack, your are looking at about a 10c charge rate, which is very fast, but some of today’s newer batteries can do this (A123′s in particular).
I guess it is just nice to see what is possible, so in the future we might be able to actually use this awesome technology.