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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.

VW may make Bentley a subsidiary of Audi

FRANKFURT — Volkswagen plans to make British luxury carmaker Bentley a subsidiary of its Audi division as it seeks economies of scale among its top-end brands, German trade publication Automobilwoche reported. Bentley, for now overseen by the head of VW's Porsche business, Oliver Blume, will from next year be part of Audi, where VW group Chief Executive Herbert Diess believes it has more potential, Automobilwoche cited company sources as saying. Synergies could include using Audi technology for a new Bentley SUV, it added. Volkswagen, which declined to comment on the report, is reviewing the future of its high-performance brands Lamborghini, Bugatti and Ducati motorcycles as part of broader quest for more economies of scale as it shifts to mass producing electric cars. Sources familiar with the matter told Reuters this month that Volkswagen was working on plans to prepare Lamborghini for a stock market listing. Related Video: Audi Bentley Volkswagen

Volkswagen completes design work on new EV platform

Volkswagen has completed the design work for its modular, MEB platform that's geared specifically for electric-vehicle production, Automotive News Europe says, citing comments Volkswagen development head Frank Welsch made at CES in Las Vegas last week. Additionally, VW's Skoda and Seat divisions may use that platform for their own plug-in vehicle models. VW's Audi division is also considering employing the platform, though adoption by Volkswagen's Porsche unit is unlikely. VW expects to start selling its first model specifically designed as an EV (i.e., not converted from existing conventional models such as the Golf and Up!) by 2020. Welsch added that the MEB platform may be used as a base for updated electrified versions of Golf, Tiguan, and Passat. Meanwhile, Skoda will debut as many as five plug-in models by 2025. Europe's largest automaker is looking to further distance itself from the 2015 scandal that involved software that cheats diesel-emissions testing efforts and has cost the company more than $15 billion in US settlements alone. All told, VW and its divisions expect to debut as many as 30 plug-in vehicle models within the next decade. Volkswagen unveiled its I.D. concept vehicle, which is based on the MEB platform and looks somewhat like the BMW i3 electric-vehicle model, at last year's Paris Motor Show. VW said at the time that the vehicle could go as far as 373 miles on a single charge. Additionally, VW will show off an electric SUV concept model at this year's Shanghai Auto Show, and is unveiling a microbus version of the I.D. concept at the Detroit Auto Show this month. Related Video: Featured Gallery Volkswagen I.D. Concept: Paris 2016 View 16 Photos News Source: Automotive News Europe-sub.req. Green Volkswagen SEAT Skoda Green Automakers Electric Hybrid meb