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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.

More German automakers may be afoul of US emission standards

Volkswagen has plenty of smoke to share, and that may mean fire for other German automakers that make diesel vehicles, says Automotive News. Earlier this month, European Federation for Transport and Environment said that BMW, Daimler's Mercedes-Benz and General Motor's Opel division are among other automakers that may have equipped their vehicles' diesel engines with similar software as VW's. That software was found to reduce emissions while a car is being tested for emissions and shuts down emissions-control systems during normal use. The European environmental group used data from the International Council on Clean Transportation. Automotive News notes that the European environmental group put out its own report earlier this month, before the VW scandal broke loose, but the report was pretty much overlooked. Now, VW is under fire after it was discovered that 2.0-liter diesel engines in the VW Jetta and Golf, and Audi A3, may be programmed to game the emissions system. VW sold almost a half-million diesel vehicles in the US during the past six years. Both BMW and Mercedes-Benz told Automotive News that the issue that befell VW doesn't apply to their diesel vehicles. Earlier this week, Volkswagen admitted its car ran the sneaky software, while the US Environmental Protection Agency (EPA) has started a probe on the company. VW is setting aside more than $7 billion to pay for the alleged violations. Meanwhile, US taxpayers may have spent as much as $51 million a year to pay for subsidies related to VW's diesel vehicle sales in 2009 alone, according to the Los Angeles Times.

German authorities investigate Winterkorn

Former Volkswagen CEO Martin Winterkorn is potentially walking away from the embattled automaker with a $32-million pension, but his retirement might not be quite so relaxed because German prosecutors in the city of Braunschweig (also called Brunswick) are now investigating his role in VW's diesel emissions evasion. The lawyers want to know whether he committed fraud, and a conviction could mean up to 10 years in prison, according to the Associated Press. However, this process is still in its earliest stages, and Winterkorn is long way from sitting in a courtroom. With other high-profile corporate cases in Germany as a guide, a trial could be years away. Lawyers haven't even questioned the former CEO, yet. In Germany, people are free to file criminal complaints, and prosecutors then decide whether a full investigation is necessary. According to the AP, Braunschweig has received about 12 grievances so far, including one from Volkswagen. The law in the country also doesn't allow charging businesses with wrongdoing, only people. Winterkorn resigned from his role at the top of VW last week, just a day after issuing a video apology for the automaker's actions. Former Porsche boss Matthias Muller has succeeded him. Along with having a new person in charge, the automaker's Supervisory Board instituted a thorough corporate reshuffle to put more focus on various regions and give brands additional power by early next year. Related Video: