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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.

Infiniti to move forward with 'Nissan-plus' strategy for its future cars

Sales at Infiniti in 2019 were down in the dumps. While the market as a whole fell 1.2%, Infiniti brand sales were down 21%. Nissan wasn’t too far behind, with its sales sliding 9.9% year-to-year. None of those numbers look great, but Nissan COO Ashwani Gupta still sees a path forward for NissanÂ’s luxury brand, Infiniti. “We will bring back Infiniti as Nissan-plus, in terms of product and technology," Gupta told Automotive News. “Infiniti will be great again.” Historically-speaking, Infiniti has been “Nissan-plus” for a long time over the years. Many vehicles in its lineup have been re-skinned versions of Nissans with some luxury thrown into the mix, and thatÂ’s not necessarily a bad thing. There have been some standouts, namely the original Q45 with its pioneering active suspension and shockingly sporty dynamics. And then there are the G coupes and sedans, vehicles that are still desirable to enthusiasts today. View 31 Photos InfinitiÂ’s current enthusiast offerings revolve around the Q50 sedan and Q60 coupe, both of which are rear-wheel-drive (or all-wheel-drive) cars with sporting intentions. ThereÂ’s no equivalent Nissan sold in America, but the Q50 is the Nissan Skyline in Japan. ItÂ’s impossible to know what the fate of these rear-drive-based cars will be, but a few possibilities lie ahead. Infiniti could really lean in to the “Nissan-plus” nomenclature and repurpose the new Altima as an Infiniti sedan. More likely, however, is a move to electrification. The Nissan IMs Concept and Infiniti Q Inspiration Concept both suggest that the company is interested in creating electric sedans. A “Nissan-plus” electric sedan sure sounds a whole lot better than a front-drive-based rebadged Nissan. InfinitiÂ’s biggest problem at this second is the lack of new product on the market. Its QX50 crossover is the most recent big redesign weÂ’ve been witness to, but it needed replacements yesterday for the QX60, Q50 and Q60 to be competitive with others in those segments. Both Lexus and Acura are outpacing Infiniti by a wide margin. The path forward as “Nissan-plus” also suggests Infiniti aims to be a premium brand, rather than a full-fledged luxury brand competing toe-to-toe with Audi, BMW and Mercedes-Benz. ThatÂ’s consistent with how the brandÂ’s cars have stacked up in recent years, even as it collaborated with Mercedes to put an Infiniti badge on the GLA crossover.

2022 Infiniti QX60 to get 295-HP V6, dump CVT for nine-speed auto

Infiniti confirmed Thursday that its redesigned QX60 will ditch its CVT in favor of a newer nine-speed automatic, following its platform cousin, the 2022 Nissan Pathfinder, in adopting an updated powertrain. Though not officially revealed, it should look mostly identical to the QX60 Monograph concept in these photos.  Putting this powertrain in Infiniti's midsize crossover really shouldn't be much of a surprise. Thanks to Nissan, we've already gotten a sneak peak at it care of the 2022 Pathfinder, which will employ the ZF nine-speed paired to the same 3.5-liter V6. The engine is tuned for an extra 11 horsepower (295 vs. 284) in the Infiniti, but we don't expect significant differences between the two when it comes to their fundamentals. Infiniti hasn't yet confirmed whether the QX60 will be offered in both front- and all-wheel-drive configurations, but we have no reason to believe otherwise. The Pathfinder is offered with front-wheel drive standard or an optional, redesigned all-wheel-drive system. It’s a new direct coupling design that can send 50% of available torque to the rear wheels, which Nissan says improves off-road performance. For Infiniti, we expect tuning centered around performance and refinement.  The ZF nine-speed isn't our favorite transmission. Its compact design makes it convenient for all-wheel-drive applications, but its on-road calibration leaves quite a bit to be desired, and many vehicles we've tested with that gearbox have disappointed us with their lack of ultimate refinement and responsiveness. That said, it's still probably an improvement over the CVT, which often seems to merely convert gasoline into unpleasant noises.  "The upcoming, all-new 2022 Infiniti QX60 embraces the tenets of what our brand stands for," said Infiniti Chairman Peyman Kargar in the company's announcement. "Teams from Japan and the U.S. have worked tirelessly to bring the new QX60 to customers as our most refined and advanced three-row crossover yet. The QX60 is a foundation for Infiniti and will bring to life our core philosophies. WeÂ’ll have more to talk about soon, so watch this space." Infiniti promises to formally introduce the 2022 QX60 later this year.