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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, least profitable Japanese automaker in Q3, stays strong on EVs

Nissan had some not-so-good financial news to report today. Despite a 57-percent net income increase, Nissan was Japan's least-profitable carmaker for the third quarter of last year. A weak yen helped put the company's operating profit below the estimates of financial analysts. In a speech on the financial situation, Nissan corporate vice president Joji Tagawa said "These results, however, do not reflect the full potential of Nissan." Given our focus on expensive electric vehicles, among other things, we wondered how this might affect EVs. One of the financial analysts told Bloomberg that the news is a "crisis" at the company, but the official word is that things are steady as she goes on the EV front. In his speech, Tagawa reaffirmed the company's strong belief in plug-in vehicles, saying that "Nissan's EV strategy will accelerate with the launch in fiscal 2014 of the e-NV200, the second all-electric model available globally." That electric van has the potential "to transform emissions among commercial vehicles" and Nissan remains interested in initiatives such as EV carsharing in Japan and the continued deployment of charging infrastructure. The speech transcript is available below. In a statement to AutoblogGreen, Billy Hayes, Nissan's vice president and program director, said that, "Nissan considers zero emission vehicles to be the ultimate solution for realizing sustainable mobility in the future and is strongly committed to EV technologies. Nissan's investment in Leaf and EV technology is positive for the company's business results over the lifecycle, and accelerating sales of Leaf only help to build economies of scale and improve the business model for the technology further." FY13 3Q financial results Nissan Motor Co., Ltd. Joji Tagawa, Corporate Vice President Introduction For the nine-month period, Nissan has made solid progress to improve its business performance. The pro forma nine-month financial results, and particularly those of the third quarter, are up compared to the same period last year, despite intense competition and uncertain economic conditions. These results, however, do not reflect the full potential of Nissan. Looking ahead to the quarter ending March 31, 2014, we expect to continue to improve our business results and as such, we are maintaining our prior profit outlook for the fiscal year.

Nissan presents NV200 is the brave new face of London taxis [w/video]

In most cities, just about any vehicle can serve as a taxi - so long as it meets the owner/operator's requirements for reliability, comfort and utility. But certain cities have their own unique taxis, and Nissan has been working hard to corner those markets. It has already designed specific taxis for such locations as New York, Barcelona and Tokyo, but its latest effort will bring a new Hackney Carriage to the streets of London.
A year and a half ago, Nissan displayed its NV200 on the streets of London in traditional black livery. But this new design takes the customization for the British capital one step further. Working closely with the mayor's office and with cab drivers across the city, Nissan's European design center in the Paddington district has reskinned the NV200 specifically to serve as the new black cab in London. The new face features round headlights, a new grille, LED lighting and a restyled front bumper. The steering has also been reconfigured to meet the 25-foot turning circle requirements for Hackney Carriages, as the black cabs are known on the streets of London.
The result is a distinctly British take on the NV200 taxi - one that we're guessing won't go without its fair share of controversy. Nissan will begin offering the black cab at the end of the year with a 1.6-liter gasoline engine mated to an automatic transmission, a powertrain said to be cleaner than the diesels used in existing taxis. And Nissan should know, having supplied many of those 2.7-liter turbodiesels in the '80s and '90s. But if that's not clean enough, the Japanese automaker will also begin selling an electric version, the e-NV200, starting next year. Watch the video clip and read the full details in the press release below.