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Fleets and Infrastructure Features

Regenerative braking: A closer look at the methods and limits of regen

All motors are generators, the old saying goes, with the caveat that few types are equally good at both modes of operation, and some are downright awful as generators (a classic example being the single-phase shaded pole induction type, used in myriad small appliances the world over). Fortunately, both types of AC motor commonly used… Read more »

Hubject connects over 70,000 chargers in 26 countries, and it’s bringing that expertise stateside

Easier EV charging interoperability en route to North America When your EV is running low on range, the last thing you want to do is waste time hunting down a spot to charge it. When driving an ICE vehicle, you can pull up to any gas station and fill your tank. With an EV, it’s not… Read more »

Charge like A supercap, store like a battery: ZapGo’s carbon-ion technology

Imagine an EV that could add 300 miles of range with a 5-minute charge – roughly the same amount of time it takes to refuel an ICE vehicle. Many companies are working on technologies to enable faster charging, which would be a huge win for EV adoption. ZapGo, based in Oxford, UK and Charlotte, North… Read more »

BP sees big opportunities for EVs and has recently been investing in EV-related companies

The oil and gas giant’s EV investment rationale is outlined in its new report, BP Technology Outlook. Demand for travel is central to modern society. Currently, transport accounts for 20% of global primary energy use. The global light-duty fleet of cars, vans, and light trucks is here to stay for the foreseeable future. In fact,… Read more »

A closer look at DC-DC converters

As far as we know, all EVs in production by major automakers use a conventional lead-acid battery for the 12 V system (surprising, but true – more on why in a bit) and this battery needs charging, just as it does in an ICE vehicle. While you could hang an alternator off the traction motor… Read more »

Electrify America begins building a nationwide network of metro, highway, workplace and community chargers

The two-billion-dollar 10-year investment represents the largest of its kind so far. In the chaos that is human affairs, bad intentions sometimes eventually lead to good results. As atonement for Volkswagen’s criminal actions in what we like to call the Dirty Diesel Debacle, government regulators have forced the automaker to invest substantial resources in promoting… Read more »

Heraeus helps companies learn to use cutting-edge materials to improve EV electronics

In addition to sophisticated new material solutions, Heraeus offers engineering services to customers to help bring next-generation products to market faster and increase the overall module reliability. When it comes to making the most efficient EVs possible, materials matter. Nobody knows that better than Heraeus, a German-based technology group that has a stake in global… Read more »

FreeWire deploys battery systems to increase the scalability of EV infrastructure

Rolling out the charging stations necessary to enable wide-scale adoption of EVs is a challenging task. Though valiant efforts are being made, there are still a lot of problematic applications that could benefit from innovative solutions. One young company, FreeWire Technologies, believes it has an answer to help with scalability: batteries on wheels. Business school… Read more »

Top circuit protection requirements to consider when designing an automotive battery pack

Littelfuse helps the auto industry navigate new electrical engineering challenges When engineers design a battery pack, they tend to focus first on its core functionality and value proposition. For a high-end energy storage device, those core attributes are typically things like total pack energy density, cost minimization, packaging efficiency, peak power and state-of-the-art thermal management…. Read more »

A closer look at film capacitors

Plastic film capacitors relentlessly continue to take over many of the duties in EV power electronics that were once performed by the venerable aluminum electrolytic type, mainly because film capacitors exhibit much lower losses and have a much longer operational lifespan, especially at ambient temperatures in the 75-85° C range. The tradeoff is that film… Read more »