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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.

Next VW Camper van concept to be electric

The next-generation Volkswagen Transporter workhorse van (teased above) debuts on April 15, but VW is also working on a more retro-inspired van concept that would be motivated by electric power. Dr. Heinz-Jakob Neusser, Volkswagen development boss on the automotive giant's board of management, described the upcoming Camper concept to Autocar at the New York Auto Show. On the outside, the model would feature a wide D-pillar, boxy design and small front overhang to maintain a classic look. "The distance from the A-pillar to the front end must be very short," he said to Autocar. For power, an electric motor would spin the front axle, and the batteries would be located under the floor. Dr. Neusser was clear that the electric van was just a concept but didn't say when it might debut. He also didn't indicate if the vehicle shared a platform with the new T6 or some over model in the company's lineup. VW has been toying with building a retro-style van for over a decade. In 2001, it showed the Microbus concept, and a decade later there was the Bulli. Neither of them ever actually saw production.

VW Tiguan grows up, gets bigger

The compact crossover segment continues to do huge business around the world, and Volkswagen is showing just how important the niche is by debuting four versions of the all-new, second-generation Tiguan at the Frankfurt Motor Show. Now riding on VW's MQB platform, the latest version has had a growth spurt, but it has also shed 110 pounds in the process. The first of them will hit the international market in April 2016. While the design is still definitively a VW, the latest Tiguan looks more aggressive and expands to 2.4-inches longer, 1.2-inches wider, 1.3-inches lower. There's also three more inches of wheelbase than the outgoing generation. At the front, the grille stretches all the way across and connects with the headlights to visually widen the look even more. In profile and at the rear, things are now a bit more angular, but the changes give the model a more chiseled style. In Fall 2016, VW will debut an even longer wheelbase body for the Tiguan. According to the company, this version will be aimed directly at customers in the US and China that prefer larger vehicles. The added inches outside translate to more room for passengers and cargo inside. Even with the seats up, there's an extra 1.8 cubic feet for stuff in the back, and those sitting in the rear get 1.1 inches more knee room. As an added amenity, buyers can option a 12.3-inch Active Info display digital instrument panel. Europeans gets a choice of eight engines: four fueled by gasoline and four by diesel. They range in power from 123 to 237 horsepower. Expect far fewer options when the Tiguan eventually arrives on these shores. Both front-wheel drive and 4Motion are available, too. In addition to having standard, 4Motion, and R-Line variants on display in Frankfurt, VW also has the Tiguan GTE plug-in hybrid concept at the show. It combines a 1.4-liter TSI engine and an electric motor mounted to the six-speed DSG to offer a total system output of 215 hp. The 13 kWh lithium-ion battery also lets the PHEV cover 31 miles on electric power and get an estimated 124 miles per gallon on the European cycle. That's not too bad, but the roof also features solar cells that VW claims can add another 621 miles of driving range per year under ideal conditions.