2008 Nissan Altima S Sedan 4-door 2.5s on 2040-cars

Auto blog

Nissan EV design is diverging in three directions

As the movie awards season kicks into high gear, Nissan design chief Shiro Nakamura appears to be implying that his company's electric-vehicle design prospects are about to go from Philomena into The Wolf of Wall Street territory. Nakamura, speaking with Motor Authority at the Detroit Auto Show last week, allowed that the design of the five-seat Nissan Leaf is fairly conservative and will remain so given that the model continues to be the most practically-minded EV from the company. In the near future, though, Nissan is planning to head in different directions. Specifically, an all-electric sports car and a two-seat commuter vehicle that could come with in-wheel electric motors that will allow the designs to get more radical. How radical? Well, we've heard Nissan may bring the BladeGlider concept (pictured) it unveiled at the Tokyo Motor Show late last year to production. It has a narrow front and wider rear and a 1+2 seating arrangement. Beyond that, Nissan has the two-seat Esflow concept vehicle it showed off in 2011 that could provide some hints, since it's expected that some of the design components from that car will be worked into the upcoming production models.

Nissan quietly, quickly installing more CHAdeMO stations

Nissan Leaf electric-vehicle sales continue to grow. And the number of US fast-charging stations that the Leaf can use are growing, well, faster. As it should be. Nissan has made good on its early-2013 vow to help ensure that the number of CHAdeMO stations in the US tripled by mid-2014, with Atlanta, San Francisco, Los Angeles and Dallas emerging as the most prevalent US markets, Green Car Reports says. In fact, the number of such stations, which can charge a Leaf to 80-percent battery capacity in about a half hour, has jumped to 633 from about 160 as of January 2013. About 180 are at Nissan dealerships, and that number should continue to surge since Nissan plans to aggressively add fast-charging stations through next March. Nissan spokesman Brian Brockman, in an e-mail to AutoblogGreen, confirmed those numbers and added that companies such as NRG, through its eVgo program, are also adding fast chargers throughout the country. The continued increase is good news for drivers of the Mitsubishi i (okay, we admit, there are not that many of them out there) and future drivers of the Kia Soul EV, as both of the models are CHAdeMO-compatible. Granted, the US has nothing on Europe, where the number of CHAdeMO stations has jumped to more than 1,000 from about 600 stations early last year. Nissan expects the continent to have about 1,800 fast-charging stations by year end. Still, the number of US CHAdeMO stations dwarfs the number of Tesla Motors' Supercharger stations, which total about 100.

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.