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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 Claims 'World's Cleanest Car' Crown

Nissan is claiming the title of "world's cleanest car" by coating a 2015 Nissan Leaf in superhydrophobic and olephobic paint. The paint repels water and oil by creating a protective layer of air between the paint and environment. It rejects water and oils so efficiently that dirt doesn't have a chance to set or streak, according to Nissan. Water and oil bead and wick away from the car's body, leaving the green machine clean. The paint is called Ultra-Ever Dry and it was developed by UltraTech International. It's just an experiment so far that's not yet been added to any production vehicles, but the paint company says Nissan is one of the first automakers to take an interest in the technology. Nissan has been tinkering with the paint for several months, and coated a European Note hatchback to showcase its possibilities. "No matter what the road throws at this Leaf, its Ultra-Ever Dry exterior coating will throw right back," UltraTech International Inc. CEO Mark Shaw told a crowd during a TED talk. Related Gallery Which Green Car Is Right For You? Green Weird Car News Nissan Electric paint

Nissan recovery to focus on U.S., Japan, China markets

Nissan will pull back from Europe and elsewhere to focus on the United States, China and Japan under a plan that represents a new strategic direction for the embattled carmaker, people with direct knowledge of the plan told Reuters. The "operational performance plan" is due to be announced on May 28 and goes beyond fixing problems from ousted leader Carlos Ghosn's aggressive expansion drive, the people said. The company's struggles predate the current global economic shutdown. Nissan's 2019 sales slumped severely.  Nissan was already planning to implement what was described as a "do or die" plan in January, before the global coronavirus pandemic froze automotive production and sales worldwide.  Pursuit of market share, particularly in the United States, led to steep discounting and a cheapened brand. Under the new, three-year plan — reported here for the first time — Nissan aims to restore dealer ties and refresh lineups to regain pricing power and profitability, the people told Reuters. "This is not just a cost-cutting plan. We're rationalizing operations, reprioritizing and refocusing our business to plant seeds for the future," one of the people said. The plan also aims to cut competition and expand cooperation with alliance partners, the people said. Nissan will follow Mitsubishi in plug-in electric hybrid vehicle technology, with the smaller peer taking the lead in Asian markets outside China and Japan. France's Renault will likely focus on electrical vehicle technologies and Europe. Nissan and Mitsubishi declined to comment. Renault did not immediately respond to a request for comment. The plan, led mainly by Chief Operating Officer Ashwani Gupta rather than Nissan's low-key chief executive, Makoto Uchida, is aimed at freeing resources to invest in products and technology for the United States, China and Japan, the people said. "The net effect is even though we reduce our R&D spend this year versus last year and make other savings, we pump those freed-up resources back into core markets and core products," said one of the people, who declined to be identified as they were not authorized to speak with media on the matter. The plan is likely to take up to two weeks to be finalized, with sales and earnings targets complicated by the anticipated long-term impact on auto sales of government measures worldwide taken to stop the coronavirus outbreak, the people said.