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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 and Infiniti to get 6 EVs within 5 years

Nissan will get four new electric-powered vehicles, while its luxury division Infiniti will get two over the next five years, a top executive told Automotive News. The six EVs will make up Nissan and Infiniti's share of the 12 electric vehicles planned for Renault-Nissan-Mitsubishi by 2022, though there's no word on how the numbers break down for those other brands. Infiniti last month announced plans for its first all-electric vehicle in 2021, plus new "e-Power" series hybrids like the ones it has introduced in other markets. But the six vehicles divulged by Toshihiro Hirai, Nissan's corporate vice president for powertrain and EV engineering, reportedly include only full battery-electrics and not hybrids. The only full-electric currently offered by either brand in the U.S. is the Nissan Leaf, which was just updated for 2018. Nissan-Renault CEO Carlos Ghosn has been a consistent supporter of electric vehicles, and he has said EVs need greater government incentives, lower development costs and a greater recognition among the buying public of the risks of climate change in order to gain traction among consumers. Last summer, Nissan-Renault announced plans to build electric vehicles in China in a new venture with Dongfeng Motor to meet EV quotas. They'll use a subcompact crossover platform from its own vehicle family.Related Video:

Fiat contemplating sub-brand to compete with Dacia, Datsun

You can add Fiat to the admittedly short list of automakers considering a low-cost brand to rival Dacia. The inexpensive Eastern European brand from Renault-Nissan has performed on the balance sheet like a premium model line, and the money the alliance is taking off the table is encouraging other players to deal themselves in. Pretty soon Nissan's Datsun sub-brand will join the Dacia party, going on sale in Russia, Indonesia and India and will claim even more rubles, rupiahs and rupees for the parent company. Volkswagen recently said it will make a decision this year on a budget line for the Chinese market. With the euthanasia of Lancia and plans to move the Fiat brand upmarket, company CEO Sergio Marchionne wonders aloud to Automotive News Europe whether there could be room for a new budget brand underneath Fiat.
We're told that the initiative has been in the idea box for five years and even moved to the stage of name considerations, like Innocenti, but worries about profit kept it from realization. If such a range were to be developed, Marchionne says it couldn't be built in Italy and stay within budget, and the company is "analyzing its manufacturing capacity outside of Europe to see if a low-cost brand is viable."