Tech Features

LORD and Scheugenpflug collaborate to scale up EV thermal designs

When EV manufacturers find a high-quality gap filler that maximizes battery performance, they don’t want to hit a snag with the application system. One of the fundamental challenges in designing an EV battery pack is the effective management of heat generated during the battery’s charge and discharge cycles. A basic principle of physics is that… Read more »

ELANTAS increases electric motor longevity with nanoparticle-infused insulation

Protecting against dielectric fatigue Like the engines in conventional vehicles, the electric motors in EVs are designed for longevity, but every device will wear out eventually. While motors have many fewer moving parts than ICEs, they are under considerable electrical and mechanical stress. A properly designed electric motor should have a useful life that far… Read more »

A closer look at the losses in EV motors

  In the bad old days when the only batteries suitable for traction applications were flooded lead-acid and Ni-Cd types, the battery was the least efficient component of an EV powertrain, routinely delivering back only 50-70% of the amp-hours that went into charging it (aka the Coulometric efficiency). When you knew you were going to… Read more »

Churning out EVs: TDK has built a fully automated manufacturing line for its DC link capacitors

Raw materials in one end, pallets full of power film capacitors out the other For companies that produce products used for electric power conversion, EVs represent a huge new market, potentially much bigger than any other existing industry. Those who have realized the potential and invested early are now positioning themselves as leaders in automotive… Read more »

Top circuit protection considerations for DC fast chargers, a new class of high-voltage consumer electronics

DC fast charging isn’t just a godsend for EV drivers looking for a quick charge. It’s also an entirely new level of consumer electronics. “You and I, as members of the general public, have previously never had access to anything higher in voltage than what we see at home in our wall socket,” Tim Patel, Global… Read more »

Top causes of failure in power semiconductors

All electronic devices eventually die, and the failure can be quite spectacular if suitable foresight and care was not employed during the design and construction phases, especially if the device handles high power or is supplied by a large battery. It should go without saying that both conditions apply to much of the electronics inside… Read more »

Motor manufacturing: Tempel builds state-of-the-art factories to meet automaker’s requirements

Stamping precision parts for automotive-grade motor manufacturing The demands of the automotive industry are unlike any other. Carmakers require that their suppliers deliver millions of parts with incredibly tight tolerances that will not fail after a decade of daily use. The companies that manufacture parts for ICEs have grown increasingly sophisticated and disciplined in the… Read more »

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 »

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 »