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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: BYD sales surge, new Mazda MX-5, plug-in VW Passat

BYD has enjoyed a tremendous leap in sales since last year, according to Want China Times. Sales from January to April were ten times that of the same period last year, with much of the credit going to government subsidies for clean cars. BYD claims, though, that battery production is limiting the number of vehicles it sells, and that by increasing that production capacity, it will see even more success. BYD's Qin plug-in hybrid, introduced in December, has already sold 4,500 units with another 8,000 orders already placed. Read more here. Mazda will reveal the fourth generation of its MX-5 roadster in September. To celebrate the car's 25th anniversary, the all-new two-seat convertible will debut during simultaneous private events in Spain, Japan and the US on September 3 and 4. Furthermore, the new Miata will be the center of a more public event in Barcelona on September 6. For fans in the US, Mazda will hold a Miatas at Mazda Raceway event from September 5 to 7. The 2016 MX-5 promises to continue to offer a lightweight, balanced design for fun and efficiency. The new Volkswagen Passat will feature a plug-in hybrid version. Volkswagen confirmed the Passat PHEV for Europe at the model's unveiling at the Volkswagen Design Centre in Potsdam, Germany. The plug-in Passat uses a 154-horsepower TSI engine and an 80-kilowatt electric motor for a total output of 208 horsepower. With a full charge, it can travel up to 31 miles on electricity alone. All versions of the eighth-generation Passat use stop-start and regenerative braking. Read more at Green Car Congress. BBC warns that the costs of charging an electric vehicle in the UK could surpass those of fueling a gasoline engine. Not so fast, says The Green Car Website. While the BBC cites charging services like Charge Master introducing fees for rapid charging making it cost about as much per mile to drive as traditional internal combustion engines. The Green Car Website points out that most people usually charge at home for much less, that paying for rapid charging is still not that expensive and that the BBC article misses the point about EVs, anyway. See the BBC article here or click here to read the rebuttal. News Source: Want China Times, Mazda, Volkswagen, BBC News, The Green Car Website via Charged, Green Car Congress Green Mazda Volkswagen Green Automakers Electric PHEV recharge wrapup qin

Recharge Wrap-up: 2015 Fuel Economy Guide available, how Porsche ships 919 Hybrid

The EPA and Department of Energy have released the 2015 Fuel Economy Guide. Unsurprisingly, the groups say that this year features more fuel efficient and low-emissions vehicles than previous years, and they span a greater variety of vehicle types. The guide also provides "best-in-class" lists, greenhouse gas ratings and estimated fuel costs for each vehicle. The EPA and DOE hope that car buyers will use the guide to help choose cars that are better for the environment and the climate. Check out the guide for yourself or read more in the press release below. To get from one WEC race to the next, Porsche ships its 919 Hybrid LMP1 cars by air. As the team travels around the world - from continent to continent - it must take 35 tons worth of cargo with it, including two LMP1 cars. That means draining fluids, partially dismantling the cars, and fitting everything into a 747. The team also ships items by sea, which requires shipping extra sets of items due to the longer shipping times. "It's all about efficiency," according to Porsche. Read more in the press release below. Terra Motors is unveiling the A4000i electric scooter, which it will sell in Europe, at the EICMA motorcycle show in Milan. The A4000i, which features smartphone connectivity, will be the company's European flagship model. Terra Motors will begin selling in Italy, and plans to make arrangements to sell in several more countries shortly after. Terra hopes to set up manufacturing in Europe, as well. Also on display at EICMA is the company's Bizmo II electric scooter, which has a driving range of 93 miles on a single charge. Read more in the press release below. Volkswagen is providing a 2015 e-Golf to Stanford University for research. The car will be used to study electric mobility, improvements in the driving experience and people's driving behavior and attitudes toward EVs. "Volkswagen's longstanding relationship with Stanford has allowed us to push the boundaries of automotive research and innovation," says Volkswagen's Ewald Goessmann, "and we look forward to extending our work together to drive advances in electric vehicles." See the video and read more in the press release below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. EPA, DOE Release 2015 Fuel Economy Guide for Car Buyers The U.S.