Posts By: Joey Stetter

UQM Technologies grows from pioneer to power player in vehicle electrification

With its integrated electric propulsion systems spreading across the globe in all conceivable vehicle types, UQM Technologies could be called the biggest little company in the EV industry. Over the past few years, the company seems to have entered its prime, as in one of those TV commercials where a deep, authoritative voice tell us… Read more »

Siemens saves weight and space with integrated motor and inverter

Screw it in and drive Among the companies pushing the boundaries of packaging efficiency is the German engineering colossus Siemens. The company has developed an integrated motor and inverter contained in a single housing, the Siemens Sivetec MSA 3300. The new drive unit reduces weight, frees up six to seven liters of additional space, lowers… Read more »

Pushing the power limits: Fuji Electric on the new requirements of power electronics

With each passing model year, the requirements demanded of automotive power electronics increase. Market forces are pushing Insulated Gate Bipolar Transistor (IGBT) modules towards lighter, smaller, more powerful and more reliable technology. These switching devices are what power an EV or hybrid inverter, and with increasingly stringent emissions requirements, automakers are looking for more innovative… Read more »

How to avoid electrical infrastructure upgrades when installing EVSE

With the falling prices, increasing sales and growing mass-market appeal of plug-in vehicles, more and more facility owners are contemplating EV charging amenities for employees, tenants and visitors. EV infrastructure could become a real competitive differentiator by attracting the desirable EV-driving population. In today’s competitive landscape, facility owners can no longer ignore the idea of… Read more »

Simulation of battery pack cooling systems: measure twice, cut once

The experts at Mentor Graphics walk us through the simulation and analysis of a battery pack cooling system. In the business of battery pack design, one of the main considerations is cooling. The pack must have a uniform and stable temperature for the batteries to perform adequately during worst-case conditions. Even within a single cell,… Read more »

oneDRIVE of a kind: KLD Energy’s new propulsion system

In August 2013, KLD Energy announced that it has received official UN and IEC certification for the battery pack solution of its proprietary electric drive system. The announcement marked the end of a five-year development effort and the beginning of high-volume production for the company’s ultra-efficient turnkey oneDRIVE propulsion system.  There are hundreds of different… Read more »

Ultracapacitors creep into automotive

Maxwell looks to leverage its early ultracapacitor experience into a ubiquitous, low-cost, high-volume complement to batteries. Power sources like internal combustion engines and advanced battery packs work great as continuous suppliers of energy. But during the highest peak loads, both sacrifice efficiency attempting to meet the power delivery demands. And pushing these devices to their… Read more »

Can phase change material mitigate thermal runaway in Li-ion packs?

(This article originally appeared in Charged Issue 6 – JAN/FEB 2013) AllCell Technologies’ new phase change thermal management material If you have spent time at any of the EV industry trade shows, you’ve probably heard the term thermal runaway. It refers to a chain reaction in which an increase in temperature causes further increases in temperature and uncontrollable… Read more »