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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 invests in QuantumScape for potentially fireproof, long-range EV batteries

VW might be getting ready to push its plug-in technology in a big way thanks to an investment in the battery startup QuantumScape. Key point: the solid-state battery is said to be fireproof and will offer tremendous range advantages. Details are not abundant yet, but according to Bloomberg, VW of America bought a five-percent stake in QuantumScape (and has an option to raise its holding). The tech could "more than triple" the EV range of VW, Porsche and Audi plug-in vehicles as soon as the middle of 2015, according to unnamed sources that Bloomberg talked to. Former Stanford University researchers started QuantumScape in 2010. The bare-bones QuantumScape website (there's nothing there other than some contact information) doesn't offer many hints about what's happening at the company, but GigaOM's Katie Fehrenbacher notes that QuantumScape is licensing tech from the "All Electron Battery" project at Stanford a few years ago. It certainly sounds amazing: [It's] a completely new class of electrical energy storage devices for electric vehicles that has the potential to provide ultra-high energy and power densities, while enabling extremely high cycle life. The All-Electron Battery stores energy by moving electrons, rather than ions, and uses electron/hole redox instead of capacitive polarization of a double-layer. ... If successful, this project will develop a completely new paradigm in energy storage for electrified vehicles that could revolutionize the electric vehicle industry. If that's what's coming in a future e-Golf or E-Tron, sign us up.

Volkswagen building budget car family planned for China in 2018

Volkswagen has publicly pondered a low-cost car for China, something akin to Nissan's Datsun revival in Southeast Asia, for at least three years. In 2013 it tapped Chinese partner FAW to help develop an entire budget brand, with plans to have something on the market in 2016 in the 6,000- to 8,000-euro range. About a year ago, VW said it couldn't figure out how to engineer an inexpensive car that didn't run counter to the brand's values, then three weeks later said it had overcome the issues. Reuters now reports that VW CEO Martin Winterkorn told German newspaper Bild am Sonntag, "We will bring a budget-car family to market in 2018, with an SUV, saloon and hatchback." Winterkorn didn't offer any other details like who VW would work with to build it - VW has partnerships with both FAW and SAIC, but the announcement will be welcomed by the brand's Chinese outpost. When this adventure started, VW said it was working to create a model that would cost 6,000 to 8,000 euro. That estimate has increased. Winterkorn is now saying the 2018 offerings will come in between 8,000 and 11,000 euro. In a straight euro-to-yuan conversion, that would equate to Chinese pricing of 56,000 to 77,000 yuan. For comparison, the New Polo with a 1.4-liter engine and a manual transmission starts at 85,900 yuan. Perhaps with an eye on the success of the Nissan-Renault sub-brand Dacia in Europe and emerging markets, Winterkorn told Bild, "We will see if this is something of interest for other markets as well." On the opposite end of the price/performance spectrum, Winterkorn also said that VW is working on two new models for Bugatti, one powered by a traditional gasoline engine and another with some sort of hybrid setup. The latter model would reportedly be the higher-performing of the two, though it's not clear whether there would be two vehicle lines or two versions of the same vehicle. As ever, as soon as we know more, so will you.