Posts Tagged: Fraunhofer

Fraunhofer develops GaN power ICs with integrated sensors

Researchers from the Fraunhofer Institute have integrated current and temperature sensors, 600 V-class power transistors, freewheeling diodes, and gate drivers onto a gallium nitride (GaN)-based semiconductor chip. The new circuit measures 4 x 3 mm and enables high switching frequencies and a high power density, while providing fast and accurate condition monitoring, according to the… Read more »

Fraunhofer and Hitachi Metals create on-board charger with 3.8 kW/l power density

The Fraunhofer Institute and Hitachi Metals say they’ve produced an on-board charger (OBC) prototype that delivers both high power output and compactness by using soft magnetic materials developed by Hitachi. Hitachi says the technology enables the OBC prototype to generate a power density of 3.8 kW/l. Hitachi explains that there is typically a trade-off between… Read more »

New motor cooling solution could lead to lighter EVs

Researchers from the Fraunhofer Institute for Chemical Technology and the Karlsruhe Institute of Technology have developed a new method for cooling electric motors, which could help reduce the weight of EVs. With the new cooling method, motors can be housed in lighter-weight polymer materials, and they also benefit from increased efficiency and power density. The… Read more »

Daimler and thysenkrupp partner to develop bipolar batteries

Under a project sponsored by the German Ministry for Economic Affairs and Energy, Daimler and the Fraunhofer Institute, together with German conglomerate thyssenkrupp and engineering firm IAV, are co-developing the design and production of bipolar batteries. Bipolar batteries are still in the laboratory stage and have not moved past pilot scale. The project, named EMBATT-goes-FAB,… 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 »

Finnish firm develops lightweight stainless steel battery pack for EVs

Finland-based Outokumpu is working on lightweight stainless steel solutions for EVs in cooperation with Germany’s Fraunhofer Institute. Their latest innovation is a new battery pack that combines several lightweight engineering technologies as well as new types of cooling and structural strategies. Because EV batteries are mainly installed in the underfloor area, their casings have high… Read more »

Fraunhofer’s modular battery makes it easy to isolate defective cells

Researchers at Germany’s Fraunhofer Institute have developed a modular battery system that could offer lower cost and improved range by making it easier to replace defective cells. In theory, all the individual cells of a battery can store the same amount of energy. In practice however, their capacities vary, and because the cells are connected… Read more »

Scalable axle module for commercial vehicles promises cost savings

A group of eleven German partners, including the Fraunhofer Institute, is developing an integrated axle module for commercial vehicles that promises high performance and reduced production costs. ESKAM, which stands for Electric Scalable Axle Module, includes a motor, gearbox and power electronics in a single compact housing. Advantages of the axle module include high power… Read more »