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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 scandal, Alan Taylor on Vipers, and future cars | Autoblog Podcast #474

Episode #473 of the Autoblog Podcast is here. This week, Dan Roth chats with Sam Abuelsamid of Navigant Research about the just-announced deal pending between Volkswagen and the EPA, and Navigant's Transportation Outlook for 2025 to 2050. Alan Taylor, host of The Drive on ERN also visits the Podcast to talk about picking up his Viper ACR in Texas and driving it back to the West Coast. It all starts with the Autoblog Garage - check it out! Check out the rundown with times for topics, and thanks for listening! Autoblog Podcast #474 Topics VW/EPA deal Navigant Research Transportation Outlook Alan Taylor In The Autoblog Garage 2016 Lincoln MKX 2016 Volvo XC90 2016 Jeep Renegade Trailhawk Hosts: Dan Roth Guests: Sam Abuelsamid, Alan Taylor Rundown Intro & Garage - 00:00 VW/EPA - 25:51 Navigant Outlook - 38:47 Alan Taylor - 54:43 Total Duration: 01:13:11 Get The Podcast 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 Dodge Volkswagen

Porsche again staring down another $1.8B in hedge fund lawsuits

The sequence of events from 2007 that began with Porsche's secret attempt to take over Volkswagen, and instead lead to Porsche being taken over by VW, continues to instigate lawsuits against the Stuttgart sports car manufacturer. A group of hedge funds that suffered over $1 billion in losses sued the car company in New York. Porsche had publicly stated it wasn't trying to buy VW, the hedge funds in question were shorting VW stock, and when Porsche's actual intentions were revealed, the stock shot up and the hedge funds took a beating.
The case was thrown out over the issue of jurisdiction, then appealed, only to see another suit filed on top of that. After that, most of the hedge funds withdrew their claims in New York and Porsche offered a 90-day window to refile in Germany where it is already fighting a number of other suits over the same issue. The hedge funds accepted the offer, refiling in Stuttgart for $1.8 billion in damages. According to Bloomberg, Porsche hasn't commented on the refiling, but as the same plaintiffs are involved, it's safe to assume that the carmaker still feels the case is "unsubstantiated and without merit." It has fared alright so far even in German courts, with two lesser cases against it thrown out last year.