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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 could report first quarterly loss since March 2009

TOKYO — Nissan may report its first quarterly loss in more than a decade on Thursday because of slumping sales, sources familiar with the company said, adding more pressure on efforts to rebuild the company after Carlos Ghosn's ouster. Deteriorating profits underscore the challenges facing Nissan, which is unwinding many of the expansionist strategies championed by ex-Chief Executive Officer and Chairman Ghosn by slashing jobs, production sites and product offerings to save cash and ensure its survival. In addition to slumping sales, production disruptions caused by China's coronavirus outbreak could also drag profits lower. Three senior officials at Japan's No. 2 automaker told Reuters that they anticipate a poor results announcement on Thursday, with one of them calling the figures "dismal". Two of the officials cautioned that there is the possibility of an operating loss, which would be the first quarterly loss since the period ending in March 2009. Nissan said it could not comment on its financial results ahead of its official announcement. The company is likely to report operating profit of 48.6 billion yen ($442.5 million) for the quarter ending in December, less than half the 103 billion yen profit a year ago, according to SmartEstimate's survey of three analysts, who revised their forecasts in January. However, those forecasts were issued before the release of the December vehicle sales figures on Jan. 30, which show third-quarter sales dropped by 11% from the year earlier period, according to Reuters calculations. That is the biggest quarterly slump of its current sales downturn that began two years ago. That sales decline led one auto equities analyst based in Japan to scrap his forecast and also warn that Nissan could post a loss. "It will be a question of whether there will be a profit or a loss. For the quarter, a loss is a possibility," he said, declining to be named as his forecast had not been updated to reflect his latest view. One of the three Nissan officials said there is a risk the automaker may cut its full-year profit forecast of 150 billion yen, which would be an 11-year low. The company announced that forecast in November after an initial 230 billion yen outlook.

Google's new Android Autos OS unveiled, will be in cars this year [w/video]

Connected cars are coming en-masse. We know this much. How, though, remains something of an open question, especially as two of the world's largest tech companies are preparing to battle for control of your car's dashboard. On the one hand, we have Apple and its CarPlay system. And now, we know what Google has been working on with Auto Link.
Its new name is Android Auto, and yes, it's based off the Android architecture that is the primary challenger to Apple's iOS mobile operating system. Announced at Google's I/O conference today, Android Auto functions similarly to CarPlay - owners will need to plug their smartphones into their cars to access the full breadth of capability.
In Android Auto's case, that means a wealth of voice controls to limit distracted driving. Google's marquee apps will be available when the interface arrives in production models later this year, including Google Play Music, Google Maps and voice-activated texting and text playback. Meanwhile, developers will be able to begin designing custom apps for the new system via an upcoming software development kit.