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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 to pursue FWD Nurburgring lap record with Pulsar Nismo

Europeans get very serious about their hot hatches. So do the Japanese. In fact there's been a whole back-and-forth lately over who makes the fastest one, and now Nissan looks set to throw its racing hat into the 'Ring.
That would be the Nürburgring, of course, where automakers trade bragging rights like baseball cards - only they don't give them up willingly. Renault set the front-drive lap record in 2008 with the previous Mégane R26.R then set the bar even higher with the Mégane RS 265 Trophy. That was before Seat stole the honors with its Leon Cupra 280, only for Renault to take them back again with the Mégane RS 275 Trophy-R. Seat is rumored to be considering a renewed assault, but it won't be the only one nipping at Renaultsport's heels in the coming years.
Honda, for its part, has made no secret of its ambition to set the record with the upcoming Civic Type R, and now word has it that Nissan is planning an assault of its own. Its weapon of choice would be an upcoming Nismo version of the new Pulsar hatchback which is just hitting the European market now as a rival to the Ford Focus, Volkswagen Golf, et al. There's no word on what its specs would be, but if it's going to challenge these players, it's going to need between 270 and 300 horsepower, a stiff suspension, big brakes and probably some sort of trick differential.

Ghosn: Low oil prices won't hurt EVs much

Carlos Ghosn might be the most unflappable automotive CEO around. Despite lower gas prices and signs that these prices do impact green vehicle sales, the CEO of the Renault-Nissan Alliance was at the World Economic Forum in Davos, Switzerland this weekend saying that people will continue to buy electric vehicles. "I don't think it is going to be slowing down," he said. "The people who are buying mainly for economic reasons may be deterred from it, but you have plenty of consumers buying EV for other reasons. On top of this, even though the price of oil is unpredictable – nobody has predicted last year that we would be at this level of oil price today and nobody knows where oil price will be next year or two years down the road – but what is predictable is that the regulation on emissions is going to get tougher in the various markets where we are present. So, our EV strategy is here not only to face too much dependence on oil or the cost of oil, but also to allow us to meet the very stringent regulations on emissions that are happening and will be happening in the future. So I can bet you that more and more car makers are coming to EVs and they're going to continue to build and sell EVs, even though the price of oil is coming down." The bit about oil prices and electric vehicles starts at 1:35 into the video. News Source: Nissan via YouTube Green Nissan Renault Emissions Gas Prices Electric Videos oil prices