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Author: Renxiang Wang
Publisher:
ISBN:
Category : Electric batteries
Languages : en
Pages : 202
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Book Description
Lithium-ion batteries are widely used for portable electronics due to high energy density, mature processing technology and reduced cost. However, their applications are somewhat limited by safety concerns. The lithium-ion battery users will take risks in burn or explosion which results from some internal components failure. So, a practical method is required urgently to find out the failures in early time. In this thesis, a new method based on temperature difference between internal point and surface (TDIS) of the battery is developed to detect the thermal failure especially the thermal runaway in early time. A lumped simple thermal model of a lithium-ion battery is developed based on TDIS. Heat transfer coefficients and heat capacity are determined from simultaneous measurements of the surface temperature and the internal temperature in cyclic constant current charging/discharging test. A look-up table of heating power in lithium ion battery is developed based on the lumped model and cyclic charging/discharging experimental results in normal operating condition. A failure detector is also built based on TDIS and reference heating power curve from the look-up table to detect aberrant heating power and bad parameters in transfer function of the lumped model. The TDIS method and TDIS detector is validated to be effective in thermal runaway detection in a thermal runway experiment. In the validation of thermal runway test, the system can find the abnormal heat generation before thermal runaway happens by detecting both abnormal heating power generation and parameter change in transfer function of thermal model of lithium ion batteries. The result of validation is compatible with the expectation of detector design. A simple and applicable detector is developed for lithium ion battery catastrophic failure detection.
Author: Renxiang Wang
Publisher:
ISBN:
Category : Electric batteries
Languages : en
Pages : 202
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Book Description
Lithium-ion batteries are widely used for portable electronics due to high energy density, mature processing technology and reduced cost. However, their applications are somewhat limited by safety concerns. The lithium-ion battery users will take risks in burn or explosion which results from some internal components failure. So, a practical method is required urgently to find out the failures in early time. In this thesis, a new method based on temperature difference between internal point and surface (TDIS) of the battery is developed to detect the thermal failure especially the thermal runaway in early time. A lumped simple thermal model of a lithium-ion battery is developed based on TDIS. Heat transfer coefficients and heat capacity are determined from simultaneous measurements of the surface temperature and the internal temperature in cyclic constant current charging/discharging test. A look-up table of heating power in lithium ion battery is developed based on the lumped model and cyclic charging/discharging experimental results in normal operating condition. A failure detector is also built based on TDIS and reference heating power curve from the look-up table to detect aberrant heating power and bad parameters in transfer function of the lumped model. The TDIS method and TDIS detector is validated to be effective in thermal runaway detection in a thermal runway experiment. In the validation of thermal runway test, the system can find the abnormal heat generation before thermal runaway happens by detecting both abnormal heating power generation and parameter change in transfer function of thermal model of lithium ion batteries. The result of validation is compatible with the expectation of detector design. A simple and applicable detector is developed for lithium ion battery catastrophic failure detection.
Author: Ginu Rajan
Publisher: CRC Press
ISBN: 1351831240
Category : Technology & Engineering
Languages : en
Pages : 894
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Book Description
Optical Fiber Sensors: Advanced Techniques and Applications describes the physical principles of, and latest developments in, optical fiber sensors. Providing a fundamental understanding of the design, operation, and practical applications of fiber optic sensing systems, this book: Discusses new and emerging areas of research including photonic crystal fiber sensors, micro- and nanofiber sensing, liquid crystal photonics, acousto-optic effects in fiber, and fiber laser-based sensing Covers well-established areas such as surface plasmon resonance sensors, interferometric fiber sensors, polymer fiber sensors, Bragg gratings in polymer and silica fibers, and distributed fiber sensors Explores humidity sensing applications, smart structure applications, and medical applications, supplying detailed examples of the various fiber optic sensing technologies in use Optical Fiber Sensors: Advanced Techniques and Applications draws upon the extensive academic and industrial experience of its contributing authors to deliver a comprehensive introduction to optical fiber sensors with a strong practical focus suitable for undergraduate and graduate students as well as scientists and engineers working in the field.
Author: Theodore Frain
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
For battery management systems, fast recognition and mitigation of cell thermal faults is vital for the preservation of battery health and the prevention of dangerous thermal events such as thermal runaway. Current battery management systems (BMSs) found in industry rely on model-based approaches to predict how the temperature of the cell will change based on the current, voltage, and state of the charge of the cell, all three of which can vary greatly throughout an average drive cycle. This thesis presents a thermal fault detection and mitigation system capable of quickly and effectively detecting and mitigating lithium-ion battery thermal faults. The system consists of a dSPACE MicroLabBox communicating via controller area network with an Arbin cycler, which transmits real-time cell data to the MicroLabBox. The MicroLabBox contains a simple cell thermal model which predicts the expected cell surface temperature based on the current being run through the cell. The predicted temperature is compared to the actual surface temperature of the cell, and an error term is generated. When a thermal fault occurs, the actual surface temperature becomes much larger than the predicted temperature, leading to a spike in the error term. This spike triggers a liquid cooling loop to activate and quickly remove excess heat from the cell. The system was tested by first running it through routine charge and discharge cycles to demonstrate that it does not produce false positives, then injecting an artificial thermal fault via a heat gun, which triggers the cooling system to activate.
Author: David Linden
Publisher: McGraw-Hill Professional
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 1516
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Book Description
BETTER BATTERIES Smaller, lighter, more powerful, and longer-lasting: the better battery is a much-sought commodity in the increasingly portable, ever-more-wireless world of electronics. Powering laptops, handhelds, cell phones, pagers, watches, medical devices, and many other modern necessitites, batteries are crucial to today's cutting-edge technologies. BEST CHOICE FOR BATTERY DESIGN AND EVALUATION This definitive guide from top international experts provides the best technical guidance you can find on designing winning products and selecting the most appropriate batteries for particular applications. HANDBOOK OF BATTERIES covers the field from the tiniest batteries yet devised for life-critical applications to the large batteries required for electric and hybrid electric vehicles. EXPERT INFORMATION Edited by battery experts David Linden, battery consultant and editor of the first two editions, and Dr. Thomas Reddy, a pioneer in the lithium battery field, HANDBOOK OF BATTERIES updates you on current methods, helps you solve problems, and makes comparisons easier. Essential for professionals, valuable to hobbyists, and preferred as a consumer guide for battery purchasers, this the THE source for battery information. The only comprehensive reference in the field, HANDBOOK OF BATTERIES has more authoritative information than any other source: * Authored by a team of leading battery technology experts from around the globe * Covers the characteristics, properties, and performance of every major battery type * Entirely revised, including new information on Lithium Ion and Large Nickel Metal Hydride batteries, and portable fuel cells. This one-of-a-kind HANDBOOK helps you: * Apply leading-edge technologies, materials, and methods in new designs and products * Predict battery performance under any conditions * Have all the needed data and equations at your fingertips
Author: Enhua Wang
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
Electric vehicles powered by lithium-ion batteries take advantages for urban transportation. However, the safety of lithium-ion battery needs to be improved. Self-induced internal short circuit of lithium-ion batteries is a serious problem which may cause battery thermal runaway. Accurate and fast identification of internal short circuit is critical, while difficult for lithium-ion battery management system. In this study, the influences of the parameters of significance test on the performance of an algorithm for internal short circuit identification are evaluated experimentally. The designed identification is based on the mean-difference model and the recursive least square algorithm. First, the identification method is presented. Then, two characteristic parameters are determined. Subsequently, the parameters of the significance calculation are optimized based on the measured data. Finally, the effectiveness of the method for the early stage internal short circuit detection is studied by an equivalent experiment. The results indicate that the detection time can be shortened significantly via a proper configuration of the parameters for the significance test.
Author: Katerina E. Aifantis
Publisher: John Wiley & Sons
ISBN: 9783527630028
Category : Technology & Engineering
Languages : en
Pages : 296
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Book Description
Materials Engineering for High Density Energy Storage provides first-hand knowledge about the design of safe and powerful batteries and the methods and approaches for enhancing the performance of next-generation batteries. The book explores how the innovative approaches currently employed, including thin films, nanoparticles and nanocomposites, are paving new ways to performance improvement. The topic's tremendous application potential will appeal to a broad audience, including materials scientists, physicists, electrochemists, libraries, and graduate students.
Author: Jürgen Garche
Publisher: Elsevier
ISBN: 0444640088
Category : Technology & Engineering
Languages : en
Pages : 670
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Book Description
Safety of Lithium Batteries describes how best to assure safety during all phases of the life of Lithium ion batteries (production, transport, use, and disposal). About 5 billion Li-ion cells are produced each year, predominantly for use in consumer electronics. This book describes how the high-energy density and outstanding performance of Li-ion batteries will result in a large increase in the production of Li-ion cells for electric drive train vehicle (xEV) and battery energy storage (BES or EES) purposes. The high-energy density of Li battery systems comes with special hazards related to the materials employed in these systems. The manufacturers of cells and batteries have strongly reduced the hazard probability by a number of measures. However, absolute safety of the Li system is not given as multiple incidents in consumer electronics have shown. Presents the relationship between chemical and structure material properties and cell safety Relates cell and battery design to safety as well as system operation parameters to safety Outlines the influences of abuses on safety and the relationship to battery testing Explores the limitations for transport and storage of cells and batteries Includes recycling, disposal and second use of lithium ion batteries
Author: Alberto Berrueta
Publisher: BoD – Books on Demand
ISBN: 1803554746
Category : Technology & Engineering
Languages : en
Pages : 110
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Book Description
Welcome to an in-depth look at the breakthroughs and challenges in the world of lithium batteries. This edited volume covers the history, current state, and future prospects of various aspects of lithium battery research. We explore the quest for higher energy and power density, better safety measures, and sustainable innovations driving the lithium battery revolution. The chapters address the challenges of anode materials, the crucial importance of safety, the specific needs of batteries for aerial electric vehicles, and advancements in lithium metal batteries. These chapters offer a thorough overview for enthusiasts, researchers, and industry experts. Key topics include nanostructuring, thermal runaway mitigation, 3D printing, and custom designs. This book provides insights into lithium battery technology and a roadmap towards sustainable, efficient, and innovative energy solutions. Discover the future of energy storage as we work together to advance lithium-ion battery technology.
Author: Francesco Ferracuti
Publisher: MDPI
ISBN: 3036504621
Category : Technology & Engineering
Languages : en
Pages : 130
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Book Description
Due to the increasing demand for security and reliability in manufacturing and mechatronic systems, early detection and diagnosis of faults are key points to reduce economic losses caused by unscheduled maintenance and downtimes, to increase safety, to prevent the endangerment of human beings involved in the process operations and to improve reliability and availability of autonomous systems. The development of algorithms for health monitoring and fault and anomaly detection, capable of the early detection, isolation, or even prediction of technical component malfunctioning, is becoming more and more crucial in this context. This Special Issue is devoted to new research efforts and results concerning recent advances and challenges in the application of “Algorithms for Fault Detection and Diagnosis”, articulated over a wide range of sectors. The aim is to provide a collection of some of the current state-of-the-art algorithms within this context, together with new advanced theoretical solutions.
Author: Reiner Korthauer
Publisher: Springer
ISBN: 3662530716
Category : Technology & Engineering
Languages : en
Pages : 417
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Book Description
The handbook focuses on a complete outline of lithium-ion batteries. Just before starting with an exposition of the fundamentals of this system, the book gives a short explanation of the newest cell generation. The most important elements are described as negative / positive electrode materials, electrolytes, seals and separators. The battery disconnect unit and the battery management system are important parts of modern lithium-ion batteries. An economical, faultless and efficient battery production is a must today and is represented with one chapter in the handbook. Cross-cutting issues like electrical, chemical, functional safety are further topics. Last but not least standards and transportation themes are the final chapters of the handbook. The different topics of the handbook provide a good knowledge base not only for those working daily on electrochemical energy storage, but also to scientists, engineers and students concerned in modern battery systems.
