Q&A with ONE CTO Dr. Steven Kaye. There is a wide range of characteristics that describe the performance of any given battery chemistry: energy density, specific energy, specific power, discharge efficiency, self-discharge rate, cycle life, calendar life, and—not the least important—cost. Some types of Li-ion chemistries are really good in a few characteristics but fall… Read more »
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DC proposes extra fees on heavy vehicles—including EVs
The proliferation of supersized vehicles has caused or exacerbated a number of problems—not only do large pickups and SUVs spew more air pollution than smaller vehicles, but they are more likely to kill or injure pedestrians and cyclists, and they increase road wear. Several European jurisdictions have enacted measures to address “truck bloat.” In France,… Read more »
WattEV aims to operate 12,000 electric Trucks-as-a-Service and a charging network to support them by 2030
Electrifying commercial vehicles is a critical part of reducing emissions, so it’s frustrating that the pace of fleet electrification has been so slow. Viable commercial EVs have been around for years, but fleet operators insisted on conducting years-long pilots to prove their reliability. Now that phase is over, and companies are starting to place substantial… Read more »
How a motor’s operating speed, torque and control strategy affect its efficiency
Second only to power output, efficiency is one of the most fudgeable ratings that applies to traction motors for EVs (right up there with capacity and cycle life claims for Li-ion batteries…). For common 3-phase industrial AC motors, most of the specmanship shenanigans have been dealt with by NEMA (National Electrical Manufacturers Association), a voluntary… Read more »
Britishvolt wants to build battery gigafactories around the world
Battery “gigafactories” are under construction all over the world—and none too soon. As EV sales grow, it is critical to establish local battery production and shorten supply chains. However, state-of-the-art cell packaging and chemistries are evolving quickly these days. How will cell manufacturers future-proof their cell production facilities? How flexible will these new plants be… Read more »
Rice researchers find misaligned crystallites in cathodes limit lithium flow
Researchers at Rice University have found that stress between misaligned crystallites in cathodes limits the flow of lithium. In an article published in ACS Energy Letters, the researchers write: “As an important battery cathode material, reaction distribution in lithium iron phosphate (LiFePO4) has been extensively studied in dispersed particle systems, but remains poorly understood for… Read more »
ATC Drivetrain acquires battery recycling and test equipment firm Treharne
Powertrain remanufacturer ATC Drivetrain has acquired the UK-based company Treharne Automotive Engineering and its group companies. Treharne and its group companies specialize in EV battery recycling as well as diagnostic and test equipment for powertrain systems. “ATC continues to build competencies that will support customers’ global needs in the EV and hybrid powertrain areas,” said… Read more »
Zenlabs reveals test results for its new pouch cells for e-aviation
Battery cell company Zenlabs Energy has announced the results of energy and power testing on its new large-format pouch cells as part of broader testing performed by independent third-party test lab Energy Assurance. Designed for the electric aviation market, the new large-format cells have a 32 Ah capacity. In 12C rate testing involving about 394… Read more »
Forsee Power to supply next-gen batteries for IVECO France electric buses
Forsee Power, a French specialist in smart EV battery systems, has renewed its partnership with IVECO France, which sells vehicles under the brands IVECO Bus and Heuliez. Forsee and IVECO have been working together to develop zero-emission public transport since 2013. Forsee produces its battery systems at its factory in Chasseneuil-du-Poitou, France, just 100 kilometers… Read more »
How pressure-sensitive adhesives enable advanced thermal runaway barrier design (Webinar)
Fires caused by thermal runaway continue to be a significant issue in the evolution of EV battery packs. Now, as the EV marketplace approaches a tipping point, engineers are racing to address this challenge using various technologies. These include high-performance, pressure-sensitive adhesives (PSA) used in combination with thermal materials that can assist in hindering thermal… Read more »