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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.

Recharge Wrap-up: Mercedes gets F1 efficiency, EV charging in Vermont, VW e-Golf to use Bosch

Efficiency equals performance, especially in the case of Formula 1 racing. The Mercedes AMC Petronas team points to several key efficiency technologies it uses to get the most out of its cars. And if their utter dominance so far this season is testament to this relationship, perhaps we should pay attention. Mercedes highlights hybrid tech, turbocharging, aerodynamics, lightweight construction, tribology (both in making internal components and lubricants more slippery) and simulation as crucial to getting around the track faster than anyone else. These just happen to be some of the same things that make the cars we drive on public roads more fuel-efficient. Learn more in the press release below. It's a good read. Brammo, maker of sweet electric motorcycles, is teaming up with TEAM Industries to make drivetrains for electric vehicles. TEAM, which specializes in drivetrain technology, will also become an investor in Brammo as part of the partnership. "The electric vehicle market is a growth market," says TEAM CEO and President David Ricke, "and TEAM and Brammo will be providing a wide range of solutions for OEM manufacturers." Read more over at EV World. Vermont celebrated the installation of a new EV charging station as part of a Green Energy Corridor between Boston and Montreal. When finished, drivers will be able to make the whole trip in an EV with access to charging along the way. For $5, customers can charge their vehicle in about 30 minutes at the Red Hen Baking Company in Middlesex. There are currently only about 700 EVs on the road in Vermont. The state has a goal to get 90 percent of its energy from renewable sources by 2050, and getting more EVs on the road is crucial to that mission. Vermont hopes that expanding the charging infrastructure will convince more people to go electric. Read more at Vermont Public Radio's website. For it's new e-Golf, Volkswagen will use Bosch chargers for home installation and ChargePoint stations at its dealerships. Bosch will have various 240-volt options for the home, and will also provide installation. e-Golf customers will also get a free ChargePoint membership, and will have access to the company's network of charging stations worldwide. The 2015 e-Golf goes on sale in the US later this year. Read more in the press release below. Synergies between F1 and Road Car Development: Efficiency equals performance In Formula 1 Racing, performance is everything.

Recharge Wrap-up: Volkswagen adopts CCS Combo plug, Tesla adds Trip Energy Prediction

Volkswagen plans to use CCS Combo plugs as standard for all future plug-in vehicles. The CCS fast-charging allows cars to charge to 80-percent capacity in as little as 15 minutes for cars like the Cross Coupe GTE. This could be a boon to prospective customers, as studies have found plug-in hybrid drivers plug in more frequently than originally expected. Plug-in drivers seem to want to perform as much driving as possible using electricity alone, and VW's plan to adopt the CCS Combo plug could help drivers achieve that. Read more at Green Car Reports. Tesla's 6.1 Firmware update for the Model S includes a Trip Energy Prediction feature. The new feature takes into account things like elevation, speed and predicted driving behavior to estimate the amount of energy used and how much range will be left in the battery after a route is programmed into the navigation system. It can let the driver know if a round trip can be made, and if the driver will need to charge before heading out. The feature updates itself in realtime throughout the drive as well, responding to how much energy is actually being used. Read a rundown of Trip Energy Prediction at Teslarati. The dates for National Drive Electric Week have been set for Saturday, September 12 through Sunday, September 20, 2015. The grassroots celebration of EVs is organized by Plug In America, The Electric Auto Association and the Sierra Club. "We're revved up for National Drive Electric Week 2015, which will offer the public, the media, and policymakers a great opportunity to come check out many of the 20-plus plug-in vehicles on the market," says Sierra Club EV Initiative Director Gina Coplon-Newfield. Last year, more than 90,000 people participated in 152 cities worldwide. Read more in the press release below. National Drive Electric Week 2015-DATES ARE SET SAN FRANCISCO, Calif., Jan., 20, 2015-Dates have been set for the fifth annual National Drive Electric Week: Sat., Sept. 12 through Sun., Sept. 20, 2015. Events will encompass two weekends to give planners maximum flexibility and consumers plenty of opportunity to attend. "This promises to be an exciting year for plug-in vehicles," said Tom Saxton, Plug In America's chief science officer. "The BMW i3 will be on the road for the first full year, we expect deliveries of the Tesla Model X, an updated Chevy Volt, and greater overall sales growth than we saw last year.