Posts By: Michael Kent

ChargePoint’s CEO on the design of its new residential charging station

In January 2009, ChargePoint installed its first charging station in downtown San Jose, California. Five years later, the company is the king of the charging networks and boasts over 20,000 charging spots in North America. The company has a staggeringly high attach rate for new plug-in vehicle drivers. Somewhere between 70 and 80 percent of… Read more »

The future of integrated inverters: Press-fit solderless interconnects and smarter design

Interplex, the complex assemblies expert, on power electronics, the automotive industry and the continuous drive for smarter design Power modules containing high-power insulated-gate bipolar transistors (IGBTs) are at the core of most modern inverters. These modules are the electronic muscle of the system. They perform all the switching, and they generate all the heat. But… Read more »

Quick Charge Power: Tony Williams on his journey into the EVSE business

EV advocate to charging entrepreneur You may remember a little Nissan LEAF battery controversy that popped up a few years ago. Beginning in May 2012, a handful of LEAF owners located in Phoenix, Arizona started posting on forums that, according to the car’s dashboard display, their batteries were losing capacity much faster than they were expecting…. Read more »

The EVSE GMI circuit: Should the standards be changed?

Leviton’s Director of Engineering explains the EVSE GMI circuit and why he believes the standards should be changed. One of the many safety features integrated into EVSE is the ground monitor interrupter (GMI) circuit. The GMI circuit ensures that the ground path is connected from the vehicle chassis all the way to the electric service… Read more »

EVs, renewables & energy storage: The unstoppable trio of energy’s future

The ripples of disruption: Q&A with Mike Calise The concept of disruption is often discussed in the fields of semiconductors, the internet, data, computers and software. But what about the energy industry? The world has been largely generating and consuming energy the same way for over a century. Charged talked to Mike Calise, Head of Electric… Read more »

Next-gen battery pack testing: AeroVironment launches the AV-900 EX

In the late 1980s, General Motors contracted with the California-based firm AeroVironment to develop the Impact electric concept car. It was the prototype that evolved into the infamous EV1 production car. While designing the Impact, AeroVironment needed the ability to test large-format battery packs for automotive applications. However, at that time, essentially no one else… Read more »

Freudenberg Group’s new line of Li-ion battery separators

The separator is a critical component of a battery. It provides a barrier between the anode and the cathode while enabling the exchange of ionic charge carriers from one side to the other. For over 40 years, the Freudenberg Group has been producing separators for nickel-based batteries, such as the nickel-metal hydride (NiMH) cells widely… Read more »

Q&A with Qualcomm’s Joe Barrett, Appealing to the wireless generation

In January 2014, the Alliance for Wireless Power announced Qualcomm Technologies Inc. as one of the first companies to earn Rezence certification, a technology and set of specifications endorsed by the world’s leading mobile chipmakers, mobile phone manufacturers and other key industry partners. With Qualcomm and other companies now certified, it is expected that Rezence-based… Read more »

Membrane technology and the importance of venting EV electronics

Protecting a car’s sensitive electronics throughout its lifetime is a must, whether it’s a conventional ICE vehicle or an EV. However, the larger electronics in plug-in vehicles have more power, more heat and higher pressure differentials that present new technological challenges to OEMs and suppliers. Any power semiconductor inevitably generates heat while conducting current, due… Read more »

The Buckeye Bullet: A student-built EV that’s racing towards 400 mph

As it stands today, Ohio State’s Buckeye Bullet 1 holds the US record speed for battery electric vehicles (BEVs) at 314.958 mph, its Venturi Buckeye Bullet 2 holds the world record for hydrogen fuel cell electric vehicles at 302.877 mph, and the Venturi Buckeye Bullet 2.5 holds the world record for BEVs at 307.666 mph. … Read more »