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DC fast charging not as damaging to EV batteries as expected

As convenient as DC fast charging is, there have been lots of warnings that repeated dumping of so many electrons into an electric vehicle's battery pack in such a short time would reduce the battery's life. While everyone agrees that DC fast charging does have some effect on battery life, it may not be as bad as previously expected. Over on SimanaitisSays, Dennis Simanaitis, writes about a recent presentation by Matt Shirk of the Idaho National Laboratory (INL) called DC Fast, Wireless, And Conductive Charging Evaluation Projects (PDF) that describes an ongoing test of four 2012 Nissan Leaf EVs that are being charged in two pairs of two. One pair only recharges from 50-kW DC fast chargers, which the other two sip from 3.3-kW Level 2 chargers exclusively. Otherwise, the cars are operated pretty much the same: climate is automatically set to 72 degrees, are driven on public roads around Phoenix, AZ and have the same set of dedicated drivers is rotated through the four cars. "Degradation depends more on the miles traveled than on the nature of recharging." What's most interesting are the charts on page seven of Shirk's presentation (click the image above to enlarge), which show the energy capacity of each of the four vehicles. When they were new, the four batteries were each tested to measure their energy capacity and given a 0 capacity loss baseline. They were then tested at 10,000, 20,000, 30,000 and 40,000 miles, and at each point, the DC-only EVs had roughly the same amount of battery loss as the Level 2 test subjects. The DC cars did lose a bit more at each test, but only around a 25-percent overall loss after 40k, compared to 23 percent for the Level 2 cars. Simanaitis' takeaway is that, "INL data suggest that the amount of degradation depends more on the miles traveled than on the nature of recharging." The tests are part of the INLs' Advanced Vehicle Testing Activity work and a final report is forthcoming. These initial numbers from IPL do mesh with other research into DC fast charging, though. Mitsubishi said daily fast charging wouldn't really hurt the battery in the i-MiEV and MIT tests of a Fisker Karma battery showed just 10-percent loss over 1,500 rapid charge-discharge cycles.

Nissan unveils ZEOD RC at Nismo HQ in Japan [w/videos]

At Le Mans this past summer, Nissan unveiled the first prototype for the ZEOD RC, a new hybrid racecar which it intends to field at the famous French endurance race next year. Four months have passed since then, totaling eight month of development, and now Nissan has revealed the final form at the headquarters of its Nismo racing division.
The updated Nissan ZEOD RC benefits from a more streamlined shape with optimized cooling and improved aerodynamics. Although billed as an electric vehicle and not a hybrid, the ZEOD RC pairs a 1.6-liter turbo four with a pair of electric motors. Its regenerative braking system is derived from the Leaf RC, and after 11 laps, it's said to be capable of taking another around the Circuit de la Sarthe under electric power alone, making it the first racecar capable of doing so. Nissan has further stated that it hopes the lessons it garners from this project will help in its development of a new LMP1 to challenge for overall victory at Le Mans in the near future.
The ZEOD RC will be on display at Fuji Speedway this weekend during the six-hour FIA World Endurance Championship race there, after which it will continue its development at the hands of former GT1 champion Michael Krumm and gamer-turned-racer Lucas Ordonez, who will be getting it ready for (and possibly drive it at) next year's 24 Hours of Le Mans. There it will compete - faster than most GTE sportscars, says Nissan - in the Garage 56 spot that once was awarded to the DeltaWing, which Nissan sponsored and to which the ZEOD RC looks conspicuously similar.

Recharge Wrap-up: Renault EV movie, H2 fueling in Paris

Renault has debuted a new documentary called Le Peuple Electrique, or The Electric People. The film features two drivers touring France over the course of three weeks in a Renault Zoe electric vehicle. Along the way, the duo meet and come to rely upon other members of the EV driving community. Renault is showcasing the film at the COP21 summit in Paris to give an insight into the culture of electric vehicles. See the film above (it's in French), and read more in the press release from Renault.Nissan and Renault have joined forces for an ad campaign for their electric vehicles. The campaign, which focuses on the Nissan Leaf and Renault Zoe, coincides with the COP21 environmental summit, for which the automakers have supplied 200 electric cars as shuttles for attendees. The ad campaign consists of press, posters, and a series of six videos, each 15 seconds in length, to be shown on social media networks in France, the UK, Germany, Spain and Italy. Read more from Renault.Air Liquide has announced a hydrogen fueling station for fuel cell taxis in Paris. Electric taxi company STEP plans to launch a fleet of at least 70 Hyundai ix35 (Tucson) Fuel Cell taxis in the next five years. The fueling station will be located at Cours Albert 1er near the Eiffel Tower, so this is truly in the heart of the city. "This first station will allow us to promote the benefits of hydrogen as a clean energy for vehicles with consumers," says Air Liquide's Francois Darchis. "Hydrogen offers a concrete solution to the challenges posed by the issue of sustainable mobility, reducing greenhouse gas emissions as well as local pollution in urban areas." Read more from Air Liquide, or at Technologic Vehicles.The world's largest ultra-fast EV charging station is now operational in Beijing, China. Located at the Xiaoying Public Transit Bus Terminal, the station is capable of charging buses to 100 percent in as little as 10 minutes. It features 25 360-kW chargers and five 90-kW chargers, and enough space for 30 buses at a time. The buses come in to charge two or three times a day during their regular operation. Just in time, too. Read more in the press release below. World's Largest Ultra-fast EV Charging Station Goes Live in Beijing, Fully Charging Commercial Vehicles in 10 Minutes This 26,500 m(2) EV charging complex has 25 chargers at 360kW and 5 chargers at 90kW; maintaining a capacity for Ultra-fast charging 30 urban transit buses at the same time STAFFORD, Texas, Dec.