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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.

Autoblog Podcast #370

Episode #370 of the Autoblog podcast is here, and this week, Dan Roth, Michael Harley and Craig Fitzgerald of BangShift and Boldride talk about the 2015 Jeep Renegade, the Consumer Reports list of Cars to Avoid, and the Geneva Motor Show, which opened today. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along after the jump with our Q&A. Thanks for listening! Autoblog Podcast #370: Topics: 2015 Jeep Renegade Worst Cars of 2014 Geneva Motor Show preview In the Autoblog Garage: 2014 Volkswagen Jetta SE 2014 SRT Viper 2015 Subaru WRX Hosts: Dan Roth, Michael Harley Guests: Craig Fitzgerald Runtime: 01:28:37 Rundown: Intro and Garage - 00:00 Jeep Renegade - 27:28 Cars to Avoid - 41:46 Geneva Motor Show - 59:54 Q&A - 01:11:04 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Podcasts Geneva Motor Show Jeep Subaru Volkswagen Concept Cars worst cars

VW CEO Winterkorn issues video apology for diesel scandal

Amid rumors that he might step down from the automaker, Volkswagen CEO Martin Winterkorn has issued a video statement publicly apologizing for the company's diesel emissions scandal. The boss claims that he doesn't have the answers to all of the questions yet but promises a thorough investigation to makes things right. Multiple times in the speech, he asks forgiveness from customers all over the world and asks people not to blame all of the company's 600,000 employees for this lapse. At no point does Winterkorn mention resigning, though. You can watch the whole clip above, but it's in German, so turn on the subtitles. However, Winterkorn's future with VW isn't assured, and works council boss Bernd Osterloh appears ready to make some changes. "I can assure you that we will do everything possible in the supervisory board meetings this week to ensure the matter is cleared up quickly and that personnel consequences are drawn. And that will not just affect the rank and file, I can assure you," he said in a letter to Bild, according to Reuters. Earlier today, the automaker admitted that the same engine management software is in vehicles from other VW group brands, but it claims that the Type EA 189 engine is the only one with a deviation between test results and real-world numbers. That mill is installed in 11 million vehicles across the globe. As a start, VW is earmarking 6.5 billion euros ($7.3 billion at current rates) to service them. The actual costs could go much higher, though.