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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.

Honda, Nissan, and Toyota expand Takata recall by millions worldwide

Honda, Nissan, and Toyota are expanding their global Takata airbag inflator recalls to cover millions of additional vehicles. Toyota alone is adding about 5 million vehicles to its campaign globally, and over 600,000 of those are in the US, according to Automotive News. Nissan's expansion includes an estimated 1.56 million cars worldwide, including about 326,000 in North America, but the exact models from the company are not yet known. According to Automotive News, Honda has also announced plans to increase the scope of its campaign but hasn't yet disclosed specific models, total numbers, or their location. Company spokesperson Chris Martin tells Autoblog that none of these vehicles are in the US, though. In the US, Toyota is replacing the driver's side front inflators on 160,000 examples of the 2004 and 2005 RAV4 nationwide. It's also swapping out the front passenger side parts for 177,000 units of the 2003 and 2004 Tundra (pictured above) and 2004 Sequoia. The automaker is also expanding its regional recalls in high-humidity areas to include the passenger-side inflators of 300,000 more vehicles. In total, the affected models are 2005-2007 model-year Corolla, Matrix, Sequoia, and Lexus SC; plus the 2005-2006 Tundra is included, as well. All of the states that are covered by this campaign are listed in Toyota's announcement, below. In a statement to Autoblog, Nissan said that it's currently working with the National Highway Traffic Safety Administration on this campaign. "We expect to have a more formal statement and additional information by Friday, May 15," the company said. TOYOTA EXPANDS TAKATA AIRBAG SAFETY RECALLS TORRANCE, Calif., May 12, 2015 – Toyota Motor Sales, U.S.A., Inc. today announced that it is expanding its recalls involving Takata air bag inflators. First, Toyota will conduct a recall to replace Takata-supplied driver front airbag inflators on approximately 160,000 model year 2004 and 2005 RAV4 sport utility vehicles. The inflators could potentially be susceptible to rupture when deployed in a crash, increasing the risk of injury to vehicle occupants. For similar reasons, Toyota will expand two existing recalls for Takata-supplied front passenger airbag inflators, namely: Toyota's nationwide recall launched in April 2013 will expand to include approximately an additional 177,000 model year 2003-2004 Tundra and model year 2004 Sequoia vehicles.

Nissan sees its EV sales surging to 1 million annually by 2022

YOKOHAMA, Japan — Nissan announced plans to sell 1 million electric vehicles (EVs) annually by 2022, a six-fold jump from what it sold last year, and said it had no plans to stop testing its self-driving cars on public roads, calling them safe. Japan's No. 2 automaker and its rivals are planning to crank up development and production of electric cars in response to tightening emissions regulations around the world, even as demand for such vehicles remains limited due to their high cost and limited charging infrastructure. Launched as the world's first mass-market all-battery EV in 2010, Nissan's Leaf compact hatchback is the world's best-selling EV, though sales have been just around 300,000 units in its lifetime. The company now plans to focus its lower-emissions lineup on all-battery and gasoline-hybrid EVs rather than costlier technologies including plug-in hybrids. Nissan said on Friday it would develop eight new all-battery EVs over the next five years, including four models for China. Its luxury Infiniti brand would begin carrying new electric models from 2021, it added. Through 2022, vehicles powered by its "e-Power" gasoline-hybrid technology would likely comprise the majority of Nissan's electric line-up, it said. Such vehicles use gasoline to power the car's motor, requiring a much smaller battery than EVs and therefore are less expensive to produce. "The heart of our strategy in terms of electrification is battery EVs and e-Power technology," Nissan Chief Planning Officer Philippe Klein told reporters at a briefing. Concerns about EV battery costs and components have prompted many automakers to develop a variety of lower emissions technologies, but Klein said that Nissan would largely forego plug-in hybrids and hydrogen fuel cell technologies, given their low cost-performance at the moment. In 2017, Nissan sold 163,000 electric vehicles globally. Nissan and its automaking partners, Renault and Mitsubishi, together plan to launch 17 electric models as part of their strategy to achieve annual vehicle sales totaling 14 million units by 2022, compared with 10.6 million units in 2017. Self-driving tests to continue Automakers and technology companies are facing mounting pressure to prove that their automated driving functions under development are safe to use on public roads following a fatal accident involving a self-driving car operated by Uber Technologies [UBER.UL] in the United States earlier this week.