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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 chair says component cost decrease keeps him confident of EV success

Volkswagen AG is in the middle of implementing a comprehensive electric vehicle strategy, one that we've been documenting for a long time. The Group stands ready to offer dozens of plug-in vehicles in the coming years if it feels there is sufficient demand and believes that selling a million EVs in Germany by 2020 is reasonable. That would be a solid number, but remember that VW sold over 5,923,000 passenger cars around the world last year, and the group as a whole sold over 9.7 million. At the company's annual Media Conference and Investor Conference in Berlin recently, the chairman of the board of VW AG - surrounded by some decidedly non-green examples of the VW Group's vehicles (some absurd new Bugatti, for example) - took some time to put the company's EV plans into focus. The upshot is that Dr. Martin Winterkorn is still guiding his electromobility ship into new waters, saying that "many more [plug-in] models will follow." Winterkorn said there are three main reasons he is confident in the ability of VW (and Audi and Porsche, at the very least) to push EV sales upward. Batteries are getting better, he said, and if the ranges can be extended, then customers are happy. But the real secret lies in reducing component costs. He said (as translated): It is important to look at the cost of the components: the battery technology, the electric motor and the electric components. Whenever you go into volume production, you of course have economies of scale. In two to three years' time, if we are able to achieve the goals we are setting for ourselves with cost and reach sufficient volume, I do believe that we can achieve two to three percent [market share] within VW Group. So, hitting a million EVs by 2020 is reachable. With the e-Golf and the e-Up off to excellent sales starts, we're willing to be confident as well.

2015 Volkswagen Golf R [w/video]

Volkswagen hired a photographer to come shoot the handful of journalists that it brought to drive the 2015 Golf R at Buttonwillow Raceway north of Los Angeles. This fact, though unremarkable in and of itself, was something I hadn't noticed until I was well into my track time – probably ten laps deep on a day that would see me run twice that number. In any event, I noticed the intrepid shooter as he was sprinting from one side of the track to the other somewhere before Turn 2, while I was barreling down the main straightaway, still looking through Turn 1. In the roughly two-mile configuration of the track that I drove, Buttonwillow is a big, wide-open circuit, largely flat and with excellent overall visibility. On that layout, and just hours into my Golf R experience, I'd already become confident in endeavoring to push the limits of VW's latest blistering hatch. In fact, the easy nature of driving the thing quickly had me overestimating my pace. So when I saw the photog sprint across the tarmac I instinctively slowed way too much, way too early for Turn 1. Looking back at the incident after I'd pitted for the session, I laughed at myself, knowing I'd have had to be driving almost double my actual speed to put the camera guy in any real danger of being hit. But the experience crystallized what my full test of the R bore out: this is a car that makes you feel much faster than you otherwise would, at least in a competition setting. The 2015 Golf R is an uber hatch that will flatter those hyper-enthusiasts passionate enough to splash out on its steep price tag, but without threatening sales of core models like the GTI and its ilk. That's a good thing for the VW fanboys, to be sure, and, I'd argue, a great thing for the strength of the German brand overall. {C} The R felt both placid and comfortable while I clicked off highway miles in search of the racetrack. My test in California had at least two things in common with the First Drive feature that Steve Ewing brought us with the Golf R in Sweden. First, we both drove European specification cars (though mine didn't suffer from the same sticker abuse that Steve's did). Second, we were both somewhat limited in terms of driving the car in varied, real-world situations. My street route consisted almost entirely of tracking California's I-5 north out of Los Angeles; which any Angelino will tell you is a less-than-riveting mode of travel.