Download or read book Thermal Characteristics of Air Flow Cooling in the Lithium Ion Batteries Experimental Chamber written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A battery pack prototype has been designed and built to evaluate various air cooling concepts for the thermal management of Li-ion batteries. The heat generation from the Li-Ion batteries was simulated with electrical heat generation devices with the same dimensions as the Li-Ion battery (200 mm x 150 mm x 12 mm). Each battery simulator generates up to 15W of heat. There are 20 temperature probes placed uniformly on the surface of the battery simulator, which can measure temperatures in the range from -40 C to +120 C. The prototype for the pack has up to 100 battery simulators and temperature probes are recorder using a PC based DAQ system. We can measure the average surface temperature of the simulator, temperature distribution on each surface and temperature distributions in the pack. The pack which holds the battery simulators is built as a crate, with adjustable gap (varies from 2mm to 5mm) between the simulators for air flow channel studies. The total system flow rate and the inlet flow temperature are controlled during the test. The cooling channel with various heat transfer enhancing devices can be installed between the simulators to investigate the cooling performance. The prototype was designed to configure the number of cooling channels from one to hundred Li-ion battery simulators. The pack is thermally isolated which prevents heat transfer from the pack to the surroundings. The flow device can provide the air flow rate in the gap of up to 5m/s velocity and air temperature in the range from -30 C to +50 C. Test results are compared with computational modeling of the test configurations. The present test set up will be used for future tests for developing and validating new cooling concepts such as surface conditions or heat pipes.

Download or read book A multifactorial analysis of thermal management concepts for high voltage battery systems written by Joshua Smith and published by Cuvillier Verlag. This book was released on 2023-06-23 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research presents a method for efficiently and reproducibly comparing diverse battery thermal management concepts in an early stage of development to assist in battery system design. The basis of this method is a hardware-based thermal simulation model of a prismatic Lithium-Ion battery, called the Smart Battery Cell (SBC). By eliminating the active chemistry, enhanced reproducibility of the experimental boundary conditions and increased efficiency of the experimental trials are realized. Additionally, safety risks associated with Lithium-Ion cells are eliminated, making the use of the SBC possible with thermal management systems in an early state of developed and without costly safety infrastructure. The integration of thermocouples leaves the thermal contact surface undisturbed, allowing the SBC to be integrated into diverse thermal management systems.

Download or read book Modeling and Simulation of Lithium ion Power Battery Thermal Management written by Junqiu Li and published by Springer Nature. This book was released on 2022-05-09 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the thermal management technology of lithium-ion batteries for vehicles. It introduces the charging and discharging temperature characteristics of lithium-ion batteries for vehicles, the method for modeling heat generation of lithium-ion batteries, experimental research and simulation on air-cooled and liquid-cooled heat dissipation of lithium-ion batteries, lithium-ion battery heating method based on PTC and wide-line metal film, self-heating using sinusoidal alternating current. This book is mainly for practitioners in the new energy vehicle industry, and it is suitable for reading and reference by researchers and engineering technicians in related fields such as new energy vehicles, thermal management and batteries. It can also be used as a reference book for undergraduates and graduate students in energy and power, electric vehicles, batteries and other related majors.

Download or read book Heat Pipe Science And Technology written by Amir Faghri and published by Global Digital Press. This book was released on 1995-03 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents basic and advanced techniques in the analytical and numerical modeling of various heat pipe systems under a variety of operating conditions and limitations. It describes the variety of complex and coupled processes of heat and mass transfer in heat pipes. The book consists of fourteen chapters, two appendices, and over 400 illustrations, along with numerous references and a wide variety of technical data on heat pipes.

Download or read book Modeling and Measurements of Thermal Transport in Li ion Based Energy Conversion and Storage Devices written by Krishna Shah (Ph.D.) and published by . This book was released on 2019 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer is of significant importance in energy conversion and storage devices such as Lithium-ion batteries for its safe operation and performance. Li-ion batteries are considered to be the state of the art among the energy storage devices due to their very high energy density and high power density. However, the safety of Li-ion batteries has become a concern in light of recent incidents, where there have been catastrophic events reported due to overheating of large battery packs. It is imperative to fully understand the nature of thermal transport in Li-ion cells. However, this has not been explored in detail yet. Recent findings have suggested very large thermal conductivity anisotropy in cylindrical Li-ion batteries. In order to make accurate predictions of thermal behavior of the Li-ion cell, it is very important for thermal models to account for such a high degree of anisotropy. In the present work, analytical steady state and transient thermal models have been developed for a cylindrical Li-ion cell. These models can be used as a tool to optimize design parameters and provide directions for further research in improving heat transfer inside a cell for improved safety. A key conclusion from this thermal modeling work is the presence of a very large temperature gradient inside the battery, which indicates poor heat transfer from the core to the surface of a cell, even if cooled aggressively at the surface. This can be explained by a thermal resistor model where the radial conduction resistance is shown to be the rate limiting factor in heat dissipation. From the thermal modeling work, it appears that the heat from the core of the cell isn't being effectively transferred to the surface. This can be due to the large thermal resistance offered by the battery material which the heat has to propagate through. If an axial fluidic channel is provided through the core of the cell, it can significantly improve heat removal from the core of the cell. Fluid flow through an annular channel is a promising strategy for cooling a Li-ion cell. A simplified analytical model is developed to understand this in detail. The model predicts temperature rise inside a cell as a function of average convective heat transfer coefficient over the channel surface and the size of the channel. Gain in terms of higher charge/discharge rate due to the effective cooling is also estimated. Reduction in temperature rise or increase in power density is also compared against the reduction in energy density as a function of channel size. A related fundamental problem of conjugate heat transfer is solved. A classical example of such a problem is flow in a thick tube, which is similar to the problem of the proposed design of a Li-ion battery with an axial fluidic channel. A framework is proposed to solve conjugate heat transfer problem and is demonstrated by solving a couple of commonly occurring conjugate heat transfer problems in reality. The method is validated with a well validated past model and finite element solver. Experimental demonstration of the conceptual design of a Li-ion cell with an annular channel has been done on a thermal test cell. Various cooling strategies, active as well as passive, have been implemented, evaluated and compared. Active cooling is demonstrated by passing air through the channel in the thermal test cell. For passive cooling, a heat pipe/copper rod is inserted in the channel with the tip protruding outside the cell. The results from this work show effectiveness of internal cooling of a Li-ion cell over convectional external cooling. Thermal runaway leads to catastrophic events in energy storage devices with high energy density, such as a pack of Li-ion cells. An experimentally validated thermal model is developed to capture the nonlinear nature of heat generation in a Li-ion cell due to the temperature dependent behavior of exothermic electrochemical reactions. The thermal modeling effort lead to the discovery of a non-dimensional number named as Thermal Runaway Number (TRN) which can help predict onset of thermal runaway and determine thermal stability of a Li-ion cell. This analysis can prove to be crucial to better understand thermal runaway phenomena in Li-ion batteries. Further, thermal modeling to compute temperature in Li-ion cell with temperature dependent heat generation has also been developed. The model has been experimentally validated by simulating temperature dependent heat generation for different values of heat generation parameters. Effect of heat transfer parameters on temperature has also been analyzed.

Download or read book The Electric Car written by Michael Hereward Westbrook and published by IET. This book was released on 2001 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considerable work has gone into electric car and battery development in the last ten years, with the prospect of substantial improvements in range and performance in battery cars as well as in hybrids and those using fuel cells. This book covers the development of electric cars, from their early days, to new hybrid models in production. Most of the coverage is focused on the very latest technological issues faced by automotive engineers working on electric cars, as well as the key business factors vital for the successful transfer of electric cars into the mass market.

Download or read book Electrochemical Power Sources Fundamentals Systems and Applications written by Jürgen Garche and published by Elsevier. This book was released on 2018-09-20 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Convective Heat Transfer in Porous Media written by Yasser Mahmoudi and published by CRC Press. This book was released on 2019-11-06 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on heat transfer in porous media, this book covers recent advances in nano and macro’ scales. Apart from introducing heat flux bifurcation and splitting within porous media, it highlights two-phase flow, nanofluids, wicking, and convection in bi-disperse porous media. New methods in modeling heat and transport in porous media, such as pore-scale analysis and Lattice–Boltzmann methods, are introduced. The book covers related engineering applications, such as enhanced geothermal systems, porous burners, solar systems, transpiration cooling in aerospace, heat transfer enhancement and electronic cooling, drying and soil evaporation, foam heat exchangers, and polymer-electrolyte fuel cells.

Download or read book Modeling and Experimental Study of Lithium ion Battery Thermal Behavior written by Carlos Felipe Lopez and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: While the popularity of lithium-ion batteries (LIBs) has increased significantly in recent years, safety concerns due to the high thermal instability of LIBs limit their use in applications with zero tolerance for failure. A safety issue of particular interest is a scenario called thermal runaway in which several exothermic side-reactions occur at elevated temperature ranges and release heat, which can then trigger the next reaction. This matter worsens when multiple cells are installed in close proximity to each other as the released heat from an abused cell can activate the chain of reactions in a neighboring cell, causing an entire module to heat rapidly and vent or ignite. This body of work aims to study LIB thermal behavior using both modeling and experiments to determine design practices that improve the safety of LIB modules. Based on the results of single cell abuse testing, a numerical model of the side-reactions that occur during thermal runaway was developed. The results showed that cell form factor and ambient conditions influence abuse behavior significantly. These abuse tests were extended to multi-cell modules to determine the effect of cell spacing, electrical configuration, and protection materials on the propagation of thermal runaway from an abused cell to a surrounding one. Lastly, an electrochemically coupled thermal model of battery thermal management systems of various configurations was created. An optimum thermal management design was found that utilized both active and passive methods of cooling to keep cell temperatures and thermal gradients within safe limits. The work described herein is expected to provide insight into safe battery design practices. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155326

Download or read book The Handbook of Lithium Ion Battery Pack Design written by John T. Warner and published by Elsevier. This book was released on 2024-05-14 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Lithium-Ion Battery Pack Design: Chemistry, Components, Types and Terminology,?Second Edition provides a clear and concise explanation of EV and Li-ion batteries for readers that are new to the field. The second edition expands and updates all topics covered in the original book, adding more details to all existing chapters and including major updates to align with all of the rapid changes the industry has experienced over the past few years. This handbook offers a layman's explanation of the history of vehicle electrification and battery technology, describing the various terminology and acronyms and explaining how to do simple calculations that can be used in determining basic battery sizing, capacity, voltage, and energy. By the end of this book the reader will have a solid understanding of the terminology around Li-ion batteries and be able to undertake simple battery calculations. The book is immensely useful to beginning and experienced engineers alike who are moving into the battery field. Li-ion batteries are one of the most unique systems in automobiles today in that they combine multiple engineering disciplines, yet most engineering programs focus on only a single engineering field. This book provides the reader with a reference to the history, terminology and design criteria needed to understand the Li-ion battery and to successfully lay out a new battery concept. Whether you are an electrical engineer, a mechanical engineer or a chemist, this book will help you better appreciate the inter-relationships between the various battery engineering fields that are required to understand the battery as an Energy Storage System. It gives great insights for readers ranging from engineers to sales, marketing, management, leadership, investors, and government officials. - Adds a brief history of battery technology and its evolution to current technologies? - Expands and updates the chemistry to include the latest types - Discusses thermal runaway and cascading failure mitigation technologies? - Expands and updates the descriptions of the battery module and pack components and systems?? - Adds description of the manufacturing processes for cells, modules, and packs? - Introduces and discusses new topics such as battery-as-a-service, cell to pack and cell to chassis designs, and wireless BMS?

Download or read book Handbook of Batteries written by David Linden and published by McGraw-Hill Professional. This book was released on 2002 with total page 1516 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Analysis of Heat spreading Thermal Management Solutions for Lithium ion Batteries written by Hussam Jihad Khasawneh and published by . This book was released on 2011 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Electrical storage technologies (i.e., batteries) play a ubiquitous role in all facets of modern technologies for applications ranging from very small to very large scale, both stationary and mobile. In the past decade, Li-ion batteries are quickly emerging as the preferred electrical energy storage technology due to the intrinsic power and energy storage density compared to older battery chemistries. All electrochemical batteries are strongly linked to their thermal state: on one hand, their electrical characteristics are strongly dependent on temperature and, on the other hand, their thermal state is a result of both their environmental temperature, but also their electrical usage due to internal heat generation. Furthermore, their life (and potentially safety) is also strongly affected by their thermal state. Li-ion batteries, due to their high electrical power capability and density tend to be used aggressively in many applications, rendering the thermal issues more acute. Finally, Li-ion battery packs (like all packs) are made of many cells interconnected in various series/parallel arrangements in tightly confined spaces. Hence, thermal management solutions need to be implemented for two primary reasons: rejecting the heat generated inside the pack to the environment to avoid high (or unsafe) temperatures leading to premature (or catastrophic) failure and providing a good thermal uniformity among all the cells so that their electrical performance (and aging) in well matched in a pack. This thesis focuses on the thermal modeling of Li-ion packs and the development of passive thermal management solutions for such packs. The thesis first provides an extensive review of the current literature on Li-ion batteries electrical and thermal modeling and current approaches for thermal management solutions of Li-ion packs. This study then focuses on a particular current application using a small Li-ion pack, namely a contractor-grade 36v cordless drill. This particular application was chosen as it encapsulates many of the features of larger automotive packs and represent and leads to an aggressive usage pattern where battery life is always an issue. This pack was experimentally studied to establish typical usage patterns and to measure the thermal and electrical state of the stock pack during such usage. The study then developed and validated a FEM computational pack model in the stock configuration. This experimentally validated models was then used as a proxy to reality to numerically investigate multiple possible configurations of passive thermal management solutions using a high thermal conductivity, Graphite-based heat spreading material to both reduce temperature non-uniformities within the pack and decrease of overall pack temperature (better heat rejection) during aggressive use. Finally, a preliminary experimental validation of one of the promising configurations of heat spreaders was investigated. The work described in this thesis clearly demonstrates that passive heat spreading technology can be very beneficial to reduce thermal stress on batteries and lead to more thermally homogenous packs. Furthermore, this study demonstrated that the investigation of such solutions can be performed with validated thermal FEM models to speed up the development of actual solution and reduce experimental prototype building. Future work will include more configurations, but also experimental investigation of battery life for both thermally managed and unmanaged packs under similar (aggressive) usage patterns. Finally, the conclusions from this study conducted on a cordless power tool are probably equally applicable to large automotive battery packs where life and costs are critical.

Download or read book Engineering Energy Storage written by Odne Stokke Burheim and published by Academic Press. This book was released on 2017-07-26 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering Energy Storage explains the engineering concepts of different relevant energy technologies in a coherent manner, assessing underlying numerical material to evaluate energy, power, volume, weight and cost of new and existing energy storage systems. With numerical examples and problems with solutions, this fundamental reference on engineering principles gives guidance on energy storage devices, setting up energy system plans for smart grids. Designed for those in traditional fields of science and professional engineers in applied industries with projects related to energy and engineering, this book is an ideal resource on the topic. - Contains chapter based numerical examples, with applied industry problems and solutions - Assesses underlying numerical material for evaluating energy, power, volume, weight and cost of new and existing energy storage systems - Offers a cross-disciplinary look across electrical, mechanical and chemical engineering aspects of energy storage

Download or read book Numerical Analysis of Unsteady Heat Transfer for Thermal Management written by and published by . This book was released on 2012 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Management for Opto electronics Packaging and Applications written by Xiaobing Luo and published by John Wiley & Sons. This book was released on 2024-08-12 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal Management for Opto-electronics Packaging and Applications A systematic guide to the theory, applications, and design of thermal management for LED packaging In Thermal Management for Opto-electronics Packaging and Applications, a team of distinguished engineers and researchers deliver an authoritative discussion of the fundamental theory and practical design required for LED product development. Readers will get a solid grounding in thermal management strategies and find up-to-date coverage of heat transfer fundamentals, thermal modeling, and thermal simulation and design. The authors explain cooling technologies and testing techniques that will help the reader evaluate device performance and accelerate the design and manufacturing cycle. In this all-inclusive guide to LED package thermal management, the book provides the latest advances in thermal engineering design and opto-electronic devices and systems. The book also includes: A thorough introduction to thermal conduction and solutions, including discussions of thermal resistance and high thermal conductivity materials Comprehensive explorations of thermal radiation and solutions, including angular- and spectra-regulation radiative cooling Practical discussions of thermally enhanced thermal interfacial materials (TIMs) Complete treatments of hybrid thermal management in downhole devices Perfect for engineers, researchers, and industry professionals in the fields of LED packaging and heat transfer, Thermal Management for Opto-electronics Packaging and Applications will also benefit advanced students focusing on the design of LED product design.

Download or read book Advances in Clean Energy and Sustainability Volume 2 written by Sankara Sarma V. Tatiparti and published by Springer Nature. This book was released on with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lithium Ion Batteries written by Masaki Yoshio and published by Springer Science & Business Media. This book was released on 2010-07-17 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here in a single source is an up-to-date description of the technology associated with the Li-Ion battery industry. It will be useful as a text for researchers interested in energy conversion for the direct conversion of chemical energy into electrical energy.