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Tech Features

Leyden Energy’s Li-imide electrolyte and the rise of start-stop vehicles

Battery start-up Leyden Energy plans to profit from the forecasted groundswell at the bottom of the electrification ladder: start-stop vehicles The average person may see the trademarked Li-imide logo and rush to the nearest convenience store to try a tangy new soft drink. However, you, being a somewhat chemistry-savvy electric vehicle enthusiast, know that Li-imide’s likely… Read more »

Web of Power: Spider9’s Operating System for Energy

Spider9 weaves a matrix for stationary energy storage and shows that when it comes to fitting battery technology into electric vehicles, it’s not all for one and one for all. Many real-world technologists and engineers take inspiration from the worlds of science fiction, where recurring themes of systems theory take shape in the Grid of… Read more »

The challenges of battery state of charge measurements

Your BMS’s fuel gauge is lying to you. Here’s why that’s not a big deal. Battery management systems (BMSs), and the fuel gauges in them, are a part of daily life for almost everyone. You’ll find them in vehicles, laptops, cell phones, grid-attached energy storage – basically, anything that does work and needs to be plugged in,… Read more »

Multiphase cooling: CapTherm’s technology takes the heat off

Canada’s CapTherm Systems’ multiphase cooling technology could take the heat off of EV batteries and charging stations more efficiently, taking up less space using fewer materials while improving longevity and performance. Charged takes an early peek at this innovation before it goes commercial next year. If you’ve never dropped your smartphone 10 feet onto pavement,… Read more »

A closer look at back electromotive force

Why motors generate and generators motor In a previous article I took a closer look at regenerative braking, and mentioned an old engineering saying that every motor is a generator and every generator is a motor (along with the caveat that some are more suited to the opposite purpose than others). This time around I’ll… Read more »

Plug In America research: Tesla Roadster battery longevity exceeds projections

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 »

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 »

Parker Hannifin races into traction motors

After years of development, the company plans to launch a new line of traction motors this summer. Parker Hannifin is an industrial motion and control powerhouse. With over $13 billion in sales last year, its products range from hydraulics to pneumatics to electric motors. But until recently, the company’s selection of motors was solely targeted at… Read more »

In-wheel house: Protean Electric’s in-wheel drive system nears production

When Protean Electric begins production of its Protean Drive in-wheel electric drive system later this year, it could mark the stirring comeback of the wheel hub motor, a concept that’s been more than a century in the making.  Electric wheel-hub motors date all the way back to 1884, and none other than Ferdinand Porsche used… 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 »