By Tom Saxton, Chief Science Officer, Plug In America Many current and prospective electric vehicle owners are curious to better understand battery pack longevity. There’s plenty of technical data on how batteries lose capacity with use, but a lot of that testing subjects the batteries to extreme and rapid charge/discharge cycles, very unlike the much gentler use… Read more »
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GM uses ultrasonic welding to build ELR battery packs
Ultrasonic welding is one of many high-tech manufacturing processes that GM uses to produce its EVs, including the Chevy Volt and the new Cadillac ELR electric luxury coupe. The technique employs a pair of tools called an anvil and horn to apply rapid mechanical vibrations to the battery’s copper and aluminum electrodes. This creates heat… Read more »
Musk expands on Tesla’s Q2 financial report
Last evening, Tesla Motors announced its Q2 2013 financial results, and afterward, Chairman & CEO Elon Musk and CFO Deepak Ahuja took questions from journalists and analysts for about an hour. As expected, Musk did most of the talking, and covered a lot of ground concerning Tesla’s future production plans and international expansion. On… Read more »
Peugeot evaluates Nickel-Zinc batteries for stop-start vehicles
PowerGenix, a developer of Nickel-Zinc (NiZn) batteries, announced that it has entered into an innovation contract with PSA Peugeot Citroen Automobiles. Peugeot will conduct an evaluation of NiZn batteries as a replacement for lead-acid in stop-start vehicles. Stop-start technology is one of the most cost-effective and efficient means of optimizing fuel economy. Current estimates put… Read more »
VIDEO: Another peek inside Tesla’s Fremont factory
Another video from WIRED lets us look in on Tesla’s factory in Fremont, California, where the future of the American automobile industry is being assembled. This video is much like the one WIRED released a couple of weeks ago, but true Tesla fans can never get enough. The huge factory was built by NUMMI, a… Read more »
Wildcat Discovery Technologies’ new cathode materials
We first told you about Wildcat Discovery Technologies back in the October/November 2012 issue of Charged. It is a venture-backed start-up in Southern California that has developed proprietary methods for rapidly synthesizing energy-storage materials. The company boasts that one of its busy scientists can produce 400 to 500 different battery materials at the same time… Read more »
A reluctant gem: The FIAT 500e EV
The cute, cuddly FIAT 500e EV may have been born only out of regulatory necessity. So what happens if it becomes the best-reviewed new EV in its class? The bar is raised; the game changes. Maybe Chrysler will even concede that it should sell it outside of the Golden State. Summertime in Sonoma County… Read more »
A closer look at coulombic efficiency
Peter Ulrix and Stef Leemans of PEC explain how the very delicate process of measuring a cell’s coulombic efficiency could significantly speed up development times. In May, the California Center for Sustainable Energy (CCSE) put out its results for America’s biggest survey of plug-in drivers yet. More than 2,000 California EV owners responded, and while… Read more »
VIDEO: Drayson Racing claims new FIA World Land Speed record
Drayson Racing has announced that it has set a new World Electric Land Speed Record. With former UK Science Minister Lord Drayson behind the wheel, the Drayson B12 69/EV electric Le Mans Prototype made two blistering runs on a runway at Elvington Airfield in Yorkshire, England, reaching an average top speed of 204.185 mph. … Read more »
Williams Advanced Engineering to supply battery technology for Formula E
The fully electric racing series that is scheduled to begin in 2014. Williams will partner with Spark Racing Technology, which is building the 42 Formula E cars.