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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.

Ex-Nissan chairman Carlos Ghosn indicted, may remain in jail for months

TOKYO — Nissan's ex-chairman Carlos Ghosn was charged Friday with breach of trust, according to the Tokyo District Court, making the star executive's release unlikely for months. Ghosn, arrested Nov. 19, was earlier charged with falsifying financial reports in underreporting his income by about 5 billion yen ($44 million) over five years through 2015. Ghosn; Greg Kelly, another Nissan executive; and Nissan as a legal entity also were charged Friday with additional underreporting of income, from 2015 through mid-2018. Ghosn's lawyer Motonari Ohtsuru said he would request that Ghosn be granted release on bail. His detention period for the breach of trust allegations was due to expire Friday. Kelly and Nissan were not charged with breach of trust. Those allegations center on Ghosn's handling of investment losses and payments made to a Saudi businessman. Ghosn, 64, says he's innocent. Suspects in Japan are routinely held for months until trials start, and Tokyo prosecutors maintain that Ghosn, a Brazilian-born Frenchman of Lebanese ancestry, is a flight risk. Earlier this week Ghosn told a Tokyo court he was innocent, in his first public appearance since his arrest, and appealed for his detention to end. But the court rejected that request. "I have a genuine love and appreciation for Nissan," Ghosn told the court. "In all of my efforts on behalf of the company, I have acted honorably, legally and with the knowledge and approval of the appropriate executives inside the company." He said the compensation was never decided on, the investment deal never resulted in any losses to Nissan, and the payments to the Saudi businessman were for legitimate services related to dealers and investments in the Gulf. Ghosn, who appeared much thinner than before his arrest, came down with a fever the day after his court appearance, but has since recovered, Ohtsuru, the lawyer, said. His wife Carole Ghosn issued a statement overnight out of Paris, expressing concern over his sickness. "I am pleading with the Japanese authorities to provide us with any information at all about my husband's health. We are fearful and very worried his recovery will be complicated while he continues to endure such harsh conditions and unfair treatment," she said. Apart from prosecutors, only embassy officials and Ghosn's lawyers are allowed to visit him. Such visits were canceled Thursday but resumed Friday.

Infiniti will move back to Japan from Hong Kong in 2020

BEIJING – Nissan's premium brand Infiniti is relocating its headquarters back to Japan from Hong Kong, its home since 2012, to create "more operational efficiencies" with its parent company, according to a document seen by Reuters on Wednesday. The move planned for mid-2020, and expected to be publicly announced later on Wednesday, will help the Japanese automaker cut costs amid a slump in its global earnings in the year ended March 31. "The relocation will further integrate (Infiniti) with global design, research and development and manufacturing functions based in Japan," Nissan said in the statement, adding that Infiniti would continue to "operate independently". The move also was "crucial" for Nissan to follow through on its strategy to electrify the Infiniti lineup, the document said, with plans for every premium model launched from 2021 to be either all-electric or "e-Power" hybrid. A Nissan official, speaking on condition of anonymity, said that while there was a "fair amount of platform and other base technology sharing" between Infiniti and the main volume brand Nissan, "there could be more". Nissan's global operating profit plunged 45% in the last fiscal year and would likely drop another 28% to "rock bottom" in the current one, according to company filings earlier this month. Infiniti's move back to Japan will reverse a decision made under ousted leader Carlos Ghosn to dilute the premium brand's Japanese origins in order to foster a more global image. Its Hong Kong headquarters has about 180 employees who were told about the move back to Yokohama earlier on Wednesday, according to the Nissan official. The Hong Kong headquarters and the global image it was intended to promote were seen as critical for Infiniti to make inroads in China, where being Japanese can sometimes be a handicap because of historical animosities. In 2012, Infiniti and other Japanese brands took a battering in the wake of diplomatic spats over disputed islets known as Diaoyu in China and Senkaku in Japan. Since then, Japan's bilateral relationship with China has steadily improved and Japanese automakers including Nissan and Toyota are seeing their businesses expand, even as China's overall auto market has slumped over the past year. (Reporting by Norihiko Shirouzu; Editing by Stephen Coates)