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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

Volkswagen could build plug-in hybrids in China

When you're Europe's largest automaker and your largest global market happens to be the one most notorious for its pollution (China), some solutions just present themselves. Volkswagen may be heeding that call. During the upcoming Beijing Motor Show, the company is expected to announce plans to produce plug-in hybrid electric vehicles in China, Reuters says, citing sources within the company. Few details have emerged, though the plug-ins will likely be produced at VW's Foshan factory in South China, which currently makes the Golf and Audi A3 and has plans to eventually make 600,000 vehicles annually. News has been percolating for a while, as Oliver Schmidt, general manager engineering and environmental office for Volkswagen Group of America, said last March that the company was planning at least two plug-in hybrid lines under the VW badge (and another three with its Audi and Porsche affiliates), including possibly a Touareg and Jetta PHEV. VW said late last month that it was looking to speed up development of "particularly eco-friendly models" made by Shanghai Volkswagen as well as developing a "new, very eco-friendly vehicle" with First Automotive Works (FAW). Earlier this year, VW unveiled its Golf GTE plug-in hybrid at the Geneva Motor Show. That model has a 1.4-liter turbocharged four-cylinder engine and an electric motor to provide 201 horsepower and 258 pound-feet of torque. The car can travel as many as 81 miles on electric power alone.