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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.

Regulators consider adding more carmakers to Takata recall

Volkswagen's diesel emissions scandal has been getting a lot of press recently, but the Takata airbag inflator affair could be grabbing headlines again soon. According to Bloomberg, the National Highway Traffic Safety Administration is contemplating an expansion to the campaign that could add seven automakers to the 12 already affected. They are Jaguar Land Rover, Mercedes-Benz, Spartan Motors, Suzuki, Tesla, Volvo Trucks, and VW Group. To be clear, there's no recall for any of these automakers, yet. The government is simply asking for a full list of vehicles that each of them have with Takata-supplied inflators containing ammonium nitrate propellant. The agency is concerned this substance could play a roll in the ruptures. "NHTSA is considering not only whether to issue an administrative order that would coordinate the remedy programs associated with the current Takata recalls, but also whether such an order should include expansion of the current recalls," the letters say. All seven can be viewed, here. From a report supplied by Takata, the government already knows that the company supplied 887,055 inflators with ammonium-nitrate propellant to VW and 184,926 of them to Tesla. In an incident during the summer, a side airbag allegedly burst in a 2015 VW Tiguan. In early September, NHTSA put out a revised report that there were 23.4 million inflators to be replaced in 19.2 million vehicles in the US. An earlier accounting from the agency had about 34 million of the parts in 30 million cars. High humidity is still believed to be among the biggest risk factors for the ruptures. Although, if ammonium nitrate also gets the blame, some already recalled models might need to be repaired again. Related Video:

Horn, Hackenburg, Hatz to be fired as VW diesel scandal deepens

Volkswagen will sack three more high ranking executives, including the head of its US division, as the company's diesel scandal deepens. Reuters reported Thursday morning that the executives are: Michael Horn, who has led VW's US operations since January 1, 2014; Ulrich Hackenberg, who oversaw Audi's research and development; and Wolfgang Hatz, who was in charge of R&D for Porsche. A VW spokesman wouldn't comment in response to an Autoblog email. The moves come in the wake of longtime VW chief executive Martin Winterkorn stepping down on Wednesday. Volkswagen's board said at the time that it expected more personnel changes to follow. Volkswagen's board is scheduled to meet Friday, and Porsche CEO Matthias Muller has reportedly been named as Winterkorn's successor. The German auto giant was plunged into crisis last Friday when the EPA charged that the company manipulated software in its diesel-powered cars to pass US emissions tests. About 482,000 vehicles in the US are affected, and VW estimates 11 million around the world could have the rigged software. The revelations have prompted outcry from governments and regulatory agencies, and in the US, Volkswagen could face a fine of up to $18 billion. The departure of Horn, Hackenberg, and Hatz is a stunning downfall for three of the company's top and most visible executives. Horn had led US operations for less than two years, taking over from Jonathan Browning, who was well-respected but failed to reach VW's ambitious sales targets. Before overseeing Audi R&D, Hackenberg was hailed as a visionary for work in developing VW's modular architectures, which allow the company to save time and money by building many vehicles off the same chassis. Hatz had led Porsche R&D since 2011 and also was in charge of engines and transmission development for all of Volkswagen. Related Video: News Source: ReutersImage Credit: Getty Images Government/Legal Green Hirings/Firings/Layoffs Audi Porsche Volkswagen Emissions Diesel Vehicles vw diesel scandal vw diesel ulrich hackenberg michael horn wolfgang hatz