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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 expands Ghosn probe to more countries, executive Munoz under scrutiny, sources say

BEIJING — Nissan Motor Co Ltd has broadened its investigation into ousted chairman Carlos Ghosn to include dealings that took place in the United States, India and Latin America, three people with knowledge of the inquiry said. In one aspect of their internal probe, company investigators are looking into decisions made in the United States by Jose Munoz who led Nissan's North American operations from 2014 to 2018, the people said. Munoz was recently placed on a leave of absence due to the probe, they added. Nissan said this month that Munoz, its chief performance officer and widely seen within the industry as close to Ghosn, was on leave "to allow him to assist the company by concentrating on special tasks arising from recent events." Munoz is not cooperating with investigators, two of the people with knowledge of the probe said, both describing his actions as "stonewalling". One of the sources described Munoz, who currently heads Nissan's China operations, as a "person of interest" in the probe, adding that it was not clear whether he would be accused of any wrongdoing. Munoz, 53, did not reply to Reuters requests for comment. The people with knowledge of the probe spoke to Reuters on condition of anonymity due to the sensitivity of the matter. A lawyer for Ghosn, Motonari Otsuru, said in an emailed comment: "I am unaware of this." Some of the questions put to Munoz relate to dealer franchise rights, one of the sources said. Other questions relate to contracts with parts suppliers and service providers that Munoz approved when he was at the helm of Nissan's U.S. operations, another source said. The sources said the findings made as part of the probe into Ghosn's affairs in the U.S. market are being shared with prosecutors. Tokyo prosecutors declined to comment. Nissan has said its internal investigation had uncovered "substantial and convincing evidence of misconduct" by Ghosn and that its scope is expanding. Ghosn, once the most celebrated executives in the auto industry and the anchor of Nissan's alliance with France's Renault SA, has been charged with under-reporting his income. On Friday, he was also charged with aggravated breach of trust, accused of shifting personal investment losses worth 1.85 billion yen ($17 million) to Nissan. In his first public appearance since his Nov.

NHTSA, IIHS, and 20 automakers to make auto braking standard by 2022

The National Highway Traffic Safety Administration, the Insurance Institute for Highway Safety and virtually every automaker in the US domestic market have announced a pact to make automatic emergency braking standard by 2022. Here's the full rundown of companies involved: BMW, Fiat Chrysler Automobiles, Ford, General Motors, Honda, Hyundai, Jaguar Land Rover, Kia, Mazda, Mercedes-Benz, Mitsubishi, Nissan, Subaru, Tesla, Toyota, Volkswagen, and Volvo (not to mention the brands that fall under each automaker's respective umbrella). Like we reported yesterday, AEB will be as ubiquitous in the future as traction and stability control are today. But the thing to note here is that this is not a governmental mandate. It's truly an agreement between automakers and the government, a fact that NHTSA claims will lead to widespread adoption three years sooner than a formal rule. That fact in itself should prevent up to 28,000 crashes and 12,000 injuries. The agreement will come into effect in two waves. For the majority of vehicles on the road – those with gross vehicle weights below 8,500 pounds – AEB will need to be standard equipment by September 1, 2022. Vehicles between 8,501 and 10,000 pounds will have an extra three years to offer AEB. "It's an exciting time for vehicle safety. By proactively making emergency braking systems standard equipment on their vehicles, these 20 automakers will help prevent thousands of crashes and save lives," said Secretary of Transportation Anthony Foxx said in an official statement. "It's a win for safety and a win for consumers." Read on for the official press release from NHTSA. Related Video: U.S. DOT and IIHS announce historic commitment of 20 automakers to make automatic emergency braking standard on new vehicles McLEAN, Va. – The U.S. Department of Transportation's National Highway Traffic Safety Administration and the Insurance Institute for Highway Safety announced today a historic commitment by 20 automakers representing more than 99 percent of the U.S. auto market to make automatic emergency braking a standard feature on virtually all new cars no later than NHTSA's 2022 reporting year, which begins Sept 1, 2022. Automakers making the commitment are Audi, BMW, FCA US LLC, Ford, General Motors, Honda, Hyundai, Jaguar Land Rover, Kia, Maserati, Mazda, Mercedes-Benz, Mitsubishi Motors, Nissan, Porsche, Subaru, Tesla Motors Inc., Toyota, Volkswagen and Volvo Car USA.