F R A U N H O F E R I N S T I T U T E F O R S O L A R E N E R G Y S Y S T E M S I S E

ELECTRICAL ENERGY STORAGE

Cover image:

Battery cell development – assembling a button cell.

© Fraunhofer ISE / Dirk Mahler

Fraunhofer Institute for

Solar Energy Systems ISE

Heidenhofstr. 2

79110 Freiburg, Germany

Phone +49 761 4588-0

www.ise.fraunhofer.de

03-910-20

Electrical Energy Storage

Dr. Matthias Vetter

Phone +49 761 4588-5600

Dr. Daniel Biro

Phone +49 761 4588-5246

batteries@ise.fraunhofer.de

Battery Cell Technology

Dr. Daniel Biro

Phone +49 761 4588-5246

batteries.cell@ise.fraunhofer.de

Battery Engineering

Stephan Lux

Phone +49 761 4588-5419

batteries.system@ise.fraunhofer.de

Applied Storage Systems

Johannes Wüllner

Phone +49 761 4588-2129

batteries.application@ise.fraunhofer.de

Battery Testing

Adrian Heuer

Phone +49 761 4588-5220

adrian.heuer@ise.fraunhofer.de

Further information:

Applied Storage SystemsWe optimize the integration and the operation of energy

storage for various applications, focusing on the entire system

in an interdisciplinary approach. Based on simulation and

modeling we advise our customers and partners along the

complete value chain. We also help to ensure the safe, reliable

and high performance operation of the electrical energy sup-

ply, which is the basis for bankable and insurable projects.Our

services comprise:

n realization of lighthouse projects

n business case development

n consulting during complete life cycle of storage projects

n system modeling, analysis and optimized system design

n simulation based storage sizing

n energy management systems

n technical due diligence: site inspection, testing, monitoring

Battery TestingWith the increasing deployment and growing complexity of

battery storage, comprehensive testing and verification have

become essential. Otherwise system errors, incorrect installa-

tions or inadequate system operation can lead to performance

failures, financial losses or even damage and accidents.

Therefore, we provide testing and verification from battery

cells up to complete systems – customer-specific and according

to established standards. (e.g. UN38.3, IEC 62133, IEC 62619,

IEC 62841). Our services comprise:

n aging: calendric and cyclic

n safety: components and systems incl. functional safety

n reliability: consideration of operating conditions and

system behavior with aged components

n performance: efficiency and effectiveness

n end-of-line quality control for cell production

n system design validation by destructive testing

n validation of thermal runaway mitigation

Battery Cell Technology We conduct research on new materials, innovative cell

architectures and new production processes. We accompany

our work with techno-economical considerations and cell

simulations in order to evaluate the economic efficiency and

technological effectiveness of our approaches.

Our services comprise:

n development and characterization of materials and

battery cells

n development of process technologies

n aqueous systems for stationary energy storage

n lithium-ion battery cells

n solid state battery cells

n technical and economical analyses (TCO)

n life cycle analyses (LCA)

Battery EngineeringAlong the entire value chain we provide highly professional

R&D services for battery system solutions in which we opti-

mize various stationary, electromobile and portable applica-

tions with specific boundary conditions and requirements. We

develop holistic approaches, which include advanced measures

for increased safety and reliability.as well as prolonged

lifetimes. Our services comprise:

n cell formation

n cell and system characterization

n aging and performance scrutiny

n system design and engineering

n thermal management

n battery management

n algorithms for state estimation and lifetime prediction

n optimized charging and operating control strategies

n thermal runaway investigation including gas analysis

n strategies for mitigating propagation risks

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1 Glovebox for preparation of sulfide-based solid-state batteries.

2 Thermographic image of a battery module to evaluate heat

generation as a function of the discharge power.

Technical Infrastructuren various processing chains for the production and processing

of advanced materials for battery cells and energy storage

n test circuits for cycling and advanced characterization of

battery cells and measurement systems for electrochemical

characterization of new battery chemistries

n battery test circuits for single battery cells up to the system

level with 250 kW (1000 V, 600 A)

n climatic chambers with safety equipment

n isothermal battery calorimeter

n high-accuracy coulombmetric test stand

n Hardware-in-the-Loop (HiL) test stand for battery

management systems

n testing and measurements for the characterization and

certification of PICO PV systems and Solar Home System kits

n test rigs for complete residential PV storage systems up to

15 kW (Hardware-in-the-Loop)

n measurement equipment for testing and characterization

of commercial PV storage systems as well as PV diesel

hybrid systems with and without battery support

Powerful electrical energy storage systems are essential for

the efficient and reliable use of fluctuating, renewable energy

sources as well as for electromobility and portable devices.

Depending on these various application scenarios, the require-

ments for rechargable battery systems can differ tremendously.

Fraunhofer ISE has made the optimization of battery systems

along the entire value chain a priority: from the material and

cell to the complete system up to the integration into the

application. For battery materials, cells, modules and systems,

we offer extensive R&D services. These encompass the analysis

and exploration of advanced material combinations and cell

architectures, the investigation of new battery cell production

processes including cell characterization, techno-economical

evaluations and life cycle assessment. We analyze aging

mechanisms and approaches to increase cycling stability and

lifetime. We also develop entire battery system prototypes,

including thermal management and battery management. Be-

yond this, we support our partners by offering comprehensive

testing services. Within field projects we facilitate the integra-

tion of electrical energy storage into diverse applications and

provide the corresponding quality assurance. Examples include

stationary battery storage units for commercial and industrial

applications as well as applications in electric mobility, from

light electric vehicles to passenger cars up to the electrification

or hybridization of planes and ships.

With our comprehensive and long-term experience, innovative

ideas and state-of-the-art laboratory facilities, we support

clients and partners such as

n suppliers of materials and battery cells

n production and characterization equipment industry

n battery system suppliers

n system integrators, OEMs

n system operators and utilities

n project developers, banks, insurance companies

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Fraunhofer ISE combines extensive technical knowledge

and expertise, more than 25 years of field experience, in-

novative thinking and state-of-the art technical equipment

in order to provide our partners and customers with:

n profound expertise along the entire value chain from

materials, battery cells, battery systems up to electrical

storage applications

n a one-stop shop for research, development, quality

assurance and certification in cooperation with

reknown certification bodies

n optimized cost-effectiveness, performance, durability,

reliability and safety of electrical storage solutions

n reduced time-to-market since integration and

certification issues can already be considered during

the development process

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3 Electricity supply for the Murchison Radioastronomy Observatory

(MRO) with a large isolated mini-grid. © CSIRO Australia

4 Investigating the lifetime of residential PV storage systems.