Rugged Power

Lithium Batteries: Science and Technology is an up-to-date and comprehensive compendium on advanced power sources and energy related topics. Each chapter is a detailed and thorough treatment of its subject. The volume includes several tutorials and contributes to an understanding of the many fields that impact the development of lithium batteries. Recent advances on various components are included and numerous examples of innovation are presented. Extensive references are given at the end of each chapter. All contributors are internationally recognized experts in their respective specialty. The fundamental knowledge necessary for designing new battery materials with desired physical and chemical properties including structural, electronic and reactivity are discussed. The molecular engineering of battery materials is treated by the most advanced theoretical and experimental methods.

This timely book addresses the different components that make up a lithium battery while also providing up-to-date information on advanced characterization techniques, safety issues, and applications. Richly illustrated as an aid to understanding, the book is edited by a team of researchers from both academia and industry, and each chapter is written by a pertinent leading expert in the field.
Beginners and students will benefit from the coverage of such fundamentals as electrochemistry, thermodynamics, transport, and storage. At the same time, those involved in R&D of lithium batteries will find this an invaluable source of information on computational modeling, cathodes, anodes, electrolytes, the electrode/electrolyte interface, cell design, and solid-state batteries. Finally, those working in the lithium-ion battery industry will use this monograph to track development in achieving higher storage capability, rate performances, and reliability.

An engineering tutorial designed to teach basic UPS (Uninterruptible Power Supplies) design and operation.

Canon EOS Digital Rebel XT Guide to Digital SLR Photography serves as a concise introduction to the features of theCanon EOS dSLR. This book not only covers the camera's basic controls, it explains their purpose and function, outlining how readers should use them and why. From focus zones to zoom settings, to exposure modes, The Canon EOS Digital Rebel XT Guide to Digital SLR Photography is aimed at providing photographers with a concise, yet complete, introduction to all aspects of digital shooting. For anyone who would otherwise struggle to learn how to use their Canon 30D's basic capabilities, this book is a quick start to pixel proficiency.

Lithium ion batteries are the state-of-the-art power sources for portable electronic devices and, due to their superior energy and power densities, are promising candidates for the demanding energy storage applications of the U.S. Navy and other branches of the military. While graphitic carbon is currently the most common anode material in lithium ion batteries, it suffers from low specific capacity (~372 mAh/g) and poor power characteristics. In contrast, amorphous carbons allow for faster charge/discharge kinetics and were found to exhibit specific capacities of up to 1000 mAh/g due to a different, and still unknown storage mechanism. This work examines the suitability of amorphous carbide-derived carbon (CDC) anodes for high-power and high-energy density lithium ion batteries. Using different material characterization techniques, such as Raman Spectroscopy, X-Ray Diffraction (XRD), and Scanning Electron Microscope (SEM), we aim to determine the relationship between the structural features of CDC to its electrochemical performance. Studies were conducted on three titanium carbide (TiC)-based CDC powders, synthesized at 600, 1000, and 1200 °C. Custom-made CDC anodes were fabricated, tested and cycled against commercial LiCoO2 and lithium metal cathodes in button-type coin cell enclosures. Electrochemical testing revealed specific capacities approaching 300 mAh/g. While the observed specific energy is lower than that of a conventional graphite anodes, the results are promising and may provide deeper insights into the relatively unknown charge storage mechanism in amorphous carbons. Our results also indicate that CDCs allow for substantial improvements in power characteristics, but additional research is needed to verify the obtained results and further optimize the electrode fabrication process.

Iron Phosphate Materials as Cathodes for Lithium Batteries describes the synthesis and the chemical–physical characteristics of iron phosphates, and presents methods of making LiFePO4 a suitable cathode material for lithium-ion batteries. The author studies carbon’s ability to increase conductivity and to decrease material grain size, as well as investigating the electrochemical behaviour of the materials obtained. Iron Phosphate Materials as Cathodes for Lithium Batteries also proposes a model to explain lithium insertion/extraction in LiFePO4 and to predict voltage profiles at various discharge rates. Iron Phosphate Materials as Cathodes for Lithium Batteries is written for postgraduate students and researchers in electrochemistry, R&D professionals and experts in electrochemical storage.

The Naval Postgraduate School’s Battery Management System (BMS) manages Li-ion batteries in a possible storage system for pulsed power weapons aboard Naval Vessels. The system charges the batteries with a buck converter according to the Constant Current Constant Voltage method. The BMS uses analog equipment to measure signals and then digitally converts signals for transmittal to a Field Programmable Gate Array (FPGA). Software processing controls the voltage and current directed to the batteries to maintain proper control and maintenance of the batteries. Based on the BMS’s successful operation, the processing of voltage and current signals in the BMS is researched and documented in this thesis. The documentation is provided through a thorough signal analysis before and after each component. Specifically, the current signal is analyzed and the processes of a Hall Effect Sensor, an instrument amplifier, and an analog-to-digital converter are described. Additionally, the voltage signal and its processing by a voltage-to-frequency converter are analyzed and the FPGA programming is described. The accuracy of the collected data is shown and possible improvements to the system are documented.