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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.

TRANSLOGIC 150: Volkswagen XL1

How do you build the world's most fuel-efficient production car? Start with the world's most aerodynamic design. The Volkswagen XL1 is capable of 261 miles per gallon thanks to its sleek shape and ultra efficient plug-in diesel hybrid powertrain. The downside is that only 250 will be made and none will be sold stateside. That didn't stop us from taking our turn behind the wheel of this truly revolutionary ride.

Recharge Wrap-up: Tesla charging times compared, VW's 70s hybrid tech

A video shows the difference in Tesla Model S charging speeds with different chargers. The video compares the 60- and 80-kWh versions of the car using a Tesla Supercharger, a CHAdeMo fast charger and Tesla's High Power Wall Connector (HPWC). With the Supercharger, both models charge from to 80 percent in 44 minutes. It's over an hour and a quarter for both cars with the CHAdeMo, but they're about neck and neck in terms of time. The HPWC takes the longest, with the 60-kWh car finishing long before the 85-kWh version. See the video above, and read more at Teslarati. Volkswagen had prototype hybrid technology back in the 1970s. A book called The Complete Book of Electric Vehicles by Sheldon Shacket describes the technology used in Volkswagen's Hybrid-Electric City Taxi prototype, which was based on the Type II microbus. It used the automaker's 1.6-liter air-cooled flat-four (borrowed from the Beetle) along with a Bosch DC shunt electric motor and 11 lead-acid batteries. Interestingly, the hybrid taxi prototype also featured an electric sliding door and a bulletproof bulkhead separating the driver from the passengers. Read more at Jalopnik, and at Green Car Reports. Country music star Lee Brice is going on tour fueled by biodiesel. Partnering with nonprofit environmental organization Reverb, Brice is using the biofuel to travel to college campuses. "We're hoping to offset the environmental impact of the tour by supporting clean energy projects and using buses and trucks fueled with locally produced biodiesel," says Brice, who is personally focused on natural preservation and water conservation. Read more at Domestic Fuel, or at The Boot. Related Gallery Tesla Model S: Quick Spin View 33 Photos News Source: Teslarati, Jalopnik, Green Car Reports, Domestic Fuel, The BootImage Credit: Copyright 2015 Drew Phillips / AOL Celebrities Green Tesla Volkswagen Alternative Fuels Biodiesel Electric Hybrid Videos recharge wrapup