Novel materials and innovative production processes for battery systems technology

Center for Energy Storage Technologies and Systems

In the »Center for Energy Storage Technologies and Systems«, Fraunhofer ISE focuses on two main areas: battery storage technologies and thermal storage technologies.

In the field of battery technologies, we are working with novel materials and developing innovative production processes for battery cells and pursue new approaches for battery system technology – from cells, through the module, up to the complete battery pack including battery management and thermal management. We optimize procedures to determine the state of charge and state of health as well as to predict the lifetime. In addition, we work on optimized charging and operating control strategies as well as battery system prototypes for widely varying application areas. Our activities also include the modelling and simulation of batteries. We work with electrical, electrochemical and thermal models at material, cell and system level. We carry out comprehensive testing and verification of batteries, including performance (efficiency and effectiveness) and aging investigations (calendric, cyclic), thermal investigations, abuse tests and post mortem analyses. Furthermore, we have the expertise to test various PV storage systems such as Pico PV systems, Solar Home systems, PV hybrid systems, grid-connected PV battery systems and storage system components (charge controllers, energy management systems, etc.).  

In terms of thermal storage technologies, we are developing new highly efficient storage materials based on classic sensitive storage materials, latent heat storage materials and sorption materials. We examine these storage materials with regard to their behavior in the storage system and carry out performance tests under conditions of use. For this purpose, various test stands and test facilities are available, with which we carry out characterizations of storage systems in a temperature range of -30°C to 550°C. By means of measuring campaigns at existing thermal plants in buildings, industry and trade, we analyze in detail the energy flows to evaluate the optimal energetic and economic integration of thermal storage systems. For analysis, we also use system simulations with which we not only evaluate the storage technology best suited for a given system, but also optimize the operating control strategies of the systems for the integration of thermal storage.

Technical Facilities

Lab Battery Materials

Basic processing chain for the production and processing of materials for battery cells

Test circuits for cycling small battery cells and measurement systems for electrochemical characterization of new battery chemistries


Lab Batteries

Battery test circuits up to system level with 250 kW (1000V, 600A)

Climatic chambers with safety equipment

Isothermal battery calorimeter

High-accuracy coulombmetric test stand

Test rigs for complete PV home storage systems up to 15 kW (Hardware-in-the-loop)

Development of battery management systems end electronics for small PV systems


Lab Lighting and DC Appliances

Testing and measurements for the characterization and certification of solar lights, light sources, PV battery system components (e.g. charge controllers according to IEC 62509) and DC-powered products (e.g. TVs)


Lab Storage Systems and Off-Grid Systems

Testing and measurements for the characterization and certification of PV battery systems (PICO PV systems according to IEC-TS 62257-9-5 and Solar Home System kits)

Testing and measurements for the characterization of PV battery storage systems as well as PV diesel hybrid systems with and without battery support


Lab Thermal Characterization

Test facility to characterize storage systems according to EN 12977-3

Measuring instruments for the characterization of storage materials with regard to their storage capacity, heat conduction, density and viscosity

Test stands to characterize thermal storage units in a temperature range of -30°C to 550°C

Monitoring systems for energy relevant analysis of thermal storage units in application

Contact

Matthias Vetter

Contact Press / Media

Dr. Matthias Vetter

Battery Systems for Stationary and Mobile Applications

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5600

Daniel Biro

Contact Press / Media

Dr. Daniel Biro

Battery Cell Technology

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5246

Stephan Lux

Contact Press / Media

Stephan Lux

Lab Batteries

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5419

Norbert Pfanner

Contact Press / Media

Norbert Pfanner

Lab Lighting and DC Appliances

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5224

Stefan Gschwander

Contact Press / Media

Stefan Gschwander

Thermal Storage for Buildings

Fraunhofer ISE
Heidenhofstr. 2
79110 Freiburg

Phone +49 761 4588-5494

More about our labs:

Lab Batteries

Testing of battery cells and modules as well as complete battery storage systems

Lab Lighting and DC Appliances

Test, inspection and certification for lamps, lighting systems and charge controllers