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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 applies for 'R-Hybrid' trademark, but what is it for?

Patent and trademark filings are sort of like tasseography for those of us in the auto industry. If you know where and how to look at something, there's a lot to be figured out. Take this trademark filing from Nissan - it's similar to the Pure Drive badge found on a Versa or Sentra, but the bottom half sports the phrase "R-Hybrid." This wouldn't be remarkable if the "R" in R-Hybrid weren't the same style as the "R" in the Nissan GT-R's badge, right down to the serifs.
While it's easy to see this as grasping at straws, it makes a fair degree of sense. The R35 GT-R may be a dominant performance machine, but it's been around since 2008, which is donkey years in the automotive industry. And based on the recent crop of hybridized hypercars and racecars, a hybrid GT-R doesn't seem like such a stretch.
As Car And Driver points out, figuring out that the GT-R will go hybrid isn't hard - figuring out when it will arrive, is. The buff book rightly points out that a new GT-R isn't expected until 2017, but that designing and trademarking a badge four years ahead of time is a bit odd. Car and Driver speculates that we could see a mildly hybridized R35, although the chances do seem remarkably low. Head over to C/D for a more thorough rundown on why this just might be a GT-R badge, including comparisons with other R-badged Nissans.

Nissan board meets but doesn't pick a replacement for Ghosn

YOKOHAMA, Japan — Nissan's board met Monday but failed to pick a new chairman to replace Carlos Ghosn, who was arrested last month on charges of violating financial regulations, saying more discussion was needed. Nissan Motor Co. Chief Executive Hiroto Saikawa told reporters that the board approved a special committee of outsiders to strengthen governance at the company. A date for the selection of a chairman was not decided. "We plan to be cautious in this process, and I do not plan to rush this," Saikawa said. The recommendations for beefing up governance are due in March, and Saikawa said he was willing to wait until then to choose a chairman. The board meeting came amid an unfolding scandal that threatens the Japanese automaker's two-decade alliance with Renault SA of France and its global brand, and highlights shoddy governance at the manufacturer of the Leaf electric car. Related: Carlos Ghosn coup theory grows: Did Nissan set him up for a fall? Ghosn and another board member Greg Kelly were formally charged last week with falsifying financial reports in underreporting Ghosn's income by about 5 billion yen ($44 million) from 2011 to 2015. They were arrested Nov. 19 by Tokyo prosecutors and remain in detention. A source close to Ghosn's family says Ghosn is innocent, as the alleged income was never decided upon or paid. Aubrey Harwell, the U.S. lawyer for Kelly, an American, says he is innocent, and that Nissan insiders and outside experts had advised him that the financial reporting was proper. The chairman must be selected from among the board members. Three outside board members — race-car driver Keiko Ihara; Masakazu Toyoda, an academic; and Jean-Baptiste Duzan, formerly of Renault — are making that decision. The special committee for governance includes the three outside board members and four other outsiders, including former judge Seiichiro Nishioka. One candidate for chairman is Saikawa, who was hand-picked by Ghosn to succeed him as chief executive. He has denounced Ghosn and Kelly as the "masterminds" in a scheme to falsify income reports and abuse company money and assets. Renault has kept Ghosn as chief executive and chairman, saying its investigation has not found wrongdoing in the awarding of Ghosn's compensation. Saikawa called on directors at Renault to heed its reasons for sacking Ghosn, but Renault's interim chairman Philippe Lagayette said on Friday that its board had not considered a replacement.