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VW decides against active-cooling system for e-Golf lithium battery

When the 2015 VW e-Golf was introduced at the LA Auto Show last year, VW said it would come with a water-cooled battery. During the Detroit Auto Show, when the car was trotted out again, VW released a new press release that stripped out the "water-cooled" language, but this change went unnoticed. During a recent VW event in Germany, a friend from Green Car Reports realized that the battery on display did not seem to have any water-cooling mechanisms. That set us off on a bit of a sleuthing and we have now learned that VW is not going to include any active cooling in the upcoming e-Golf. In fact, the company is entirely confident that this car - because of what it's designed to do - doesn't need it. "The need for a cooling system wasn't there" - VW's Darryll Harrison VW has been working on an electrified Golf for ages now, and so changes to the plan are to be expected. But battery cooling is vitally important not just to keep the car operating properly but because when things get too hot, there can be serious public relations problems. Nissan began testing a new battery chemistry for the Leaf in 2013 after an uproar from warm-weather EV drivers in Arizona who were experiencing worse-than-expected battery performance. The Leaf has always used an air-cooled battery, which is another way to say that there is no active cooling system (more details here). Tesla CEO Elon Musk once said this approach is "primitive." So, why is VW following the same path? We asked Darryll Harrison, VW US's manager of brand public relations west, for more information, and he told AutoblogGreen that VW engineers discovered through a lot of testing of the Golf Mk6 EV prototypes, that battery performance was not impacted by temperatures when using the right battery chemistry. That chemistry, it turns out, is lithium nickel manganese cobalt oxide (NMC) in cells from Panasonic. These cells had "the lowest self-warming tendency and the lowest memory effect of all cells tested," Harrison said. He added that VW engineers tested the NMC cells in places like Death Valley and Arizona and found they didn't warm very quickly either through operation, charging (including during fast charging) or through high ambient temps. "The need for a cooling system wasn't there," Harrison said.

Recharge Wrap-Up: Tesla, CarCharging and the EPA

Credit Suisse analysts are bullish on Tesla. The group gives the electric car company's stock an "outperform" rating with a target price of $325. For its continued success, Credit Suisse cites the vehicles' superior technology, in turn offering more torque, roominess and reliability. Says analyst Dan Galves said of Tesla's competition with ICEs, "If Tesla can get to cost-parity with Internal Combustion vehicles and still offer $1,400 to $2,500 per year fuel savings to the consumer, it won't be a fair fight." Read more at Yahoo Finance or at Business Insider. In other Tesla news, Tesla Model S owners will be able to unlock and start their car using an iPhone. The Tesla app is adding this functionality soon, perhaps with the update to iOS 8. It's not yet clear how this function will work, but it's one more innovative convenience feature that Model S owners can enjoy. That means drivers will have less to carry in their pockets or purses when they go for a drive. Read more at 9 to 5 Mac. CarCharging Group has remotely lowered the amperage on some of its residential users' Blink charging stations to 24 amps. This will slow down the charging time for affected customers with 6.6-kilowatt charging by about 15 percent. The company cited safety reasons for the move, with concerns about overheating. The amperage reduction is temporary, until CarCharging is able to provide replacement parts for the chargers. Some are concerned about the delayed action, as well as the fact that the reduction was handled without owner permission. Read more at Plugin Cars. Ford is halting test drives and sales of certain C-Max hybrid and Focus models due to a safety concern. Cars made during a single week this month at a Michigan factory may not have enough ball bearings in the steering gear assembly, which could lead to loss of control. None of the affected cars have been sold, Ford says, and about 50 units are currently at dealerships. Just over 600 will need to be recalled. Dealerships have been notified of the problem. Read more at Reuters and the The Detroit News. A new EPA report shows that urban air in the US is becoming less toxic since the Clean Air Act Amendments of 1990. The report shows a 66-percent reduction in benzene, almost 60 percent reduction in mercury from man-made sources, 84 percent less lead and more.

The VW emissions carnage assessment with an upside

Bombs cause destruction. Even if they're intelligently guided and pinpoint, there's always collateral damage. The strange Volkswagen brew, which is still spontaneously combusting in plain sight, will result in aftershocks for years. And the professional end of the corporation's top leadership will not be the only casualties. Blows are striking shareholder confidence, the residual value of the cars involved, consumer confidence, and the German economy itself. A hard rain's going to fall elsewhere, too. Here are just four damage assessment areas. The High-Compression Past and Low-Compassion Future of Diesels Despite European and especially German manufacturers' high belief that diesel engines were a way to light-duty automotive salvation, VW's scandal started the last nail in the fuel's coffin. Regulations both in the U.S. and in Europe for particulates and nitrogen oxide (NOx) are getting much harder to meet, and this is at the very core of VW's deception. Even with the high-cost exhaust after-treatment systems, sky-high fuel pressure, and sophisticated electronics, the inescapable NOx realities won't be washable by technology in an affordable way. German engineering pride will have to work a real miracle to meet these looming regs and the stain of VW's scandal did the whole diesel movement no favors. Perhaps not so ironically, the E.U. adopted more stringent emission standards this year, which closely mimic the U.S. Tier 2, Bin 5 figures phased in for 2008. Indeed, when VW announced it was able to meet the stringent US NOx emissions standards in 2009 for its diesel engines without urea injection as an exhaust after-treatment, it was a particularly high point of engineering pride for the company. No other manufacturer had figured out how to do so. One Honda official at the time remarked that they had simply no idea how VW was achieving this feat and Honda couldn't come close. Well, neither could VW. On a macro scale, European cities are also starting to face government fines for air quality violations. This is forcing those cities to find various ways to cut smog-related causes like tailpipe emissions. In fact, Paris has gone to the length of restricting car use on a sliding scale when smog persists, while electric cars are free to roam. France's longer and larger plan is banning diesel fuel for light-duty transportation entirely. But why was there a frothy focus by the European manufacturers on diesels in the first place?