Mersen beats next generation DOE power density targets through Stack Reference designs

150 kVA – 16kW/L SiC power stack for heavy-duty EV Mersen partnered with AgileSwitch and FTCAP to develop two high performance 3-phase inverter power stack reference designs. The SiC MOSFET version uses Wolfspeed SiC modules to deliver 150 kVA at a power density of 16 kVA/l, exceeding the DOE’s 2020 roadmap for electric vehicle applications…. Read more »

Monolithically integrated GaN half bridge enables smaller, more powerful voltage converters

Germany’s Fraunhofer Institute for Applied Solid State Physics has demonstrated what it calls the world’s first monolithically integrated GaN half bridge for the 600 volt class. Half bridge circuits are the centerpiece of many voltage converters. Monolithic integration combines several components on a single GaN chip, enabling small, powerful systems to be created. Monolithically integrated… Read more »

Will Ford’s new CEO put more emphasis on EVs and AVs?

Ford has replaced CEO Mark Fields with Jim Hackett, the head of the company’s Smart Mobility division. The company also appointed a new executive in charge of “strategy and business model development for electrified vehicles and autonomous vehicles.” The buzz in the media is that the new regime will put more emphasis on electric and… Read more »

EV tech explained: Why do EVs restrict the amount of battery capacity that can be used for driving?

All EVs that use lithium-ion batteries are designed so that their full capacity can’t be used in driving – a few kWh are always left over as a buffer. Sometimes you’ll find this figure in spec sheets, which might (for example) quote capacity as “60 kWh (55 usable)” or some such. What is the reason… Read more »

Groupe PSA and partners launch GridMotion smart charging project

Groupe PSA and several partners have launched a new project to evaluate smart charging technology. The idea is to reduce an EV driver’s electricity bill by shifting charging times to periods of lower electricity prices. Further savings could be achieved by providing grid balancing services through a Vehicle to Grid (V2G) system. The two-year GridMotion… Read more »

Adding quartz powder to Li-S battery electrolyte slows capacity loss

Researchers at the Paul Scherrer Institute (PSI) in Switzerland and the Université Grenoble Alpes in France have developed a simple method that they say can improve the performance of lithium-sulfur batteries by 25-30%. In “Direct observation of lithium polysulfides in lithium-sulfur batteries using operando X-ray diffraction,” published in Nature Energy, Joanna Conder and colleagues reported… Read more »

Guangzhou Automobile Group building industrial park for electric and intelligent vehicles

Chinese automaker Guangzhou Automobile Group (GAC) has begun construction of a large industrial park for electric and intelligent vehicles. Located in Guangzhou’s Panyu district, the park has a planned area of 5 square km. More than 45 billion yuan ($6.5 billion) is expected to be invested in the project, by both GAC and other enterprises… Read more »

German utility connects charging stations to Ethereum blockchain

Innogy Innovation Hub, a subsidiary of Germany electric and gas utility RWE, has launched hundreds of charging stations all over Germany, connected to Ethereum’s public blockchain. As Trustnodes explains, “By using a computer chip in the charging station, a smartphone app to communicate with the interface, and a blockchain to manage and record all of… Read more »

Umicore invests €300 million to boost capacity in cathode materials

Materials technology specialist Umicore plans to invest €300 million ($328 million) between 2017 and 2019 to further increase its production of nickel-manganese-cobalt (NMC) cathode materials. NMC is one of the most popular cathode materials for EV batteries, and global demand is increasing fast. The increased capacity will enable Umicore to respond to a surge in… Read more »

TM4 and Cummins partner to develop plug-in hybrid powertrain for e-buses

Hydro-Québec subsidiary TM4 has joined with motor-maker Cummins to develop a plug-in hybrid powertrain for Class 7/8 transit buses. TM4 equipped 5,000 buses in China with its electric powertrain last year. The new system consists of a genset (Cummins’ Euro 2019 B4.5 engine coupled with TM4’s LSG130 electric generator), a TM4 SUMO electric motor, a… Read more »