[PDF] Developments In Valve Regulated Lead Acid Vrla Batteries eBook

Author : Patrick T. Moseley
Publisher : Elsevier
Page : 603 pages
File Size : 26,14 MB
Release : 2004-02-24
Category : Science
ISBN : 008047473X

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For many decades, the lead-acid battery has been the most widely used energy-storage device for medium- and large-scale applications (approximately 100Wh and above). In recent years, the traditional, flooded design of the battery has begun to be replaced by an alternative design. This version - the valve-regulated lead-acid (VRLA) battery - requires no replenishment of the water content of the electrolyte solution, does not spill liquids, and can be used in any desired orientation. Since the VRLA battery operates in a somewhat different manner from its flooded counterpart, considerable technological development has been necessary to meet the exacting performance requirements of the full range of applications in which rechargeable batteries are used. The valve-regulated design is now well established in the industrial battery sector, and also appears set to be adopted widely for automotive duty. This book provides a comprehensive account of VRLA technology and its uses. In the future, all industrial processes - including the manufacture of batteries - will be required to conform to the conventions of sustainability. Accordingly, the crucial areas of the environmental impact associated with the production and use of VRLA batteries and the recycling of spent units are also treated thoroughly. Valve-Regulated Lead-Acid Batteries gives an essential insight into the science that underlies the development and operation of VRLA batteries and is a comprehensive reference source for those involved in the practical use of the technology in key energy-storage applications. Covers all major advances in the field Provides a comprehensive account of VRLA technology and its uses First book dedicated to this technology

Author : P. G. Balakrishnan
Publisher :
Page : 0 pages
File Size : 34,41 MB
Release : 2008
Category : Lead-acid batteries
ISBN : 9781604562699

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Although Gaston Planté invented the lead-acid battery in 1859 in France, it took about a century to make it maintenance-free in the sense that there is no necessity for topping up the battery with water. This was made possible by the invention of a hermetically sealed nickel oxyhydroxide-cadmium battery. Though such batteries were variously called in the beginning as maintenance-free battery, sealed battery, starved electrolyte battery, absorbed electrolyte battery, etc., due to heavy litigation, particularly in the U.K., the term valve-regulated lead-acid battery (VRLAB) was coined to obviate the legal battle. The VRLAB operates on the principle of "internal oxygen cycle" without resorting to the use of catalytic recombination plugs. The binary alloys used in the initial periods of development of VRLAB had no aluminium or silver. After the introduction of Ca-Al master alloy for preparing the Pb-Ca-Al alloy, the grid casting problems were minimised. The introduction of tin to alleviate the problem of premature capacity loss helped to a very great extent in increasing the market share of VRLAB, particularly in the stationary market segment. Developments in the absorptive glass mat (AGM) separator also gave a great impetus to the popularisation of the VRLAB. The work done by the Advanced Lead-Acid Battery Consortium (ALABC) paved the way for increasing the Electric Vehicle (EV) market for VRLAB. Rapid charging of VRLAB not only helped in extending the range of EVs by reducing the down time of EVs, but also increased the life of fast-charged VRLAB. The VRLA battery technology being a comparatively new one, a lot of teething troubles were encountered in the initial periods of its introduction. A detailed analysis of the failure modes of VRLAB and remedial measures adopted by the industry is critically analysed. Extensive trials of VRLAB have been carried out to prove the utility of automotive VRLAB in Australia, Italy, Germany and Japan. Aircraft VRLAB have been proved immune to thermal runaway even though the temperature rises to 72°C. A new idea of a hybrid AGM-Gel VRLAB for use in high temperature operation is under investigation and field trial.

Author :
Publisher :
Page : 21 pages
File Size : 24,92 MB
Release : 1993
Category :
ISBN :

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Technical advances in lead-acid battery design have created new opportunities for battery systems in telecommunications, computer backup power and vehicle propulsion power. Now the lead-acid battery has the opportunity to become a major element in the mix of technologies used by electric utilities for several power quality and energy and resource management functions within the network. Since their introduction into industrial applications, Valve Regulated Lead-Acid (VRLA) batteries have received widespread acceptance and use in critical telecommunications and computer installations, and have developed over 10 years of reliable operational history. As further enhancements in performance, reliability and manufacturing processes are made, these VRLA batteries are expanding the role of battery-based energy storage systems within utility companies portfolios. This paper discusses the rationale and process of designing, optimizing and testing VRLA batteries for specific utility application requirements.

Author : Jürgen Garche
Publisher : Elsevier
Page : 708 pages
File Size : 38,92 MB
Release : 2017-02-21
Category : Technology & Engineering
ISBN : 0444637036

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Lead-Acid Batteries for Future Automobiles provides an overview on the innovations that were recently introduced in automotive lead-acid batteries and other aspects of current research. Innovative concepts are presented, some of which aim to make lead-acid technology a candidate for higher levels of powertrain hybridization, namely 48-volt mild or high-volt full hybrids. Lead-acid batteries continue to dominate the market as storage devices for automotive starting and power supply systems, but are facing competition from alternative storage technologies and being challenged by new application requirements, particularly related to new electric vehicle functions and powertrain electrification. Presents an overview of development trends for future automobiles and the demands that they place on the battery Describes how to adapt LABs for use in micro and mild hybrid EVs via collector construction and materials, via carbon additives, via new cell construction (bipolar), and via LAB hybrids with Li-ion and supercap systems System integration of LABs into vehicle power-supply and hybridization concepts Short description of competitive battery technologies

Author :
Publisher :
Page : 13 pages
File Size : 40,37 MB
Release : 2005
Category :
ISBN :

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Valve regulated lead acid (VRLA) batteries offer performance advantages for military vehicle applications. Thus the Army is looking for alternative sources of military-sized VRLA batteries.

Author : C Menictas
Publisher : Elsevier
Page : 635 pages
File Size : 31,54 MB
Release : 2014-12-09
Category : Technology & Engineering
ISBN : 1782420223

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As energy produced from renewable sources is increasingly integrated into the electricity grid, interest in energy storage technologies for grid stabilisation is growing. This book reviews advances in battery technologies and applications for medium and large-scale energy storage. Chapters address advances in nickel, sodium and lithium-based batteries. Other chapters review other emerging battery technologies such as metal-air batteries and flow batteries. The final section of the book discuses design considerations and applications of batteries in remote locations and for grid-scale storage. Reviews advances in battery technologies and applications for medium and large-scale energy storage Examines battery types, including zing-based, lithium-air and vanadium redox flow batteries Analyses design issues and applications of these technologies

Author : Jürgen Garche
Publisher : Newnes
Page : 4532 pages
File Size : 40,49 MB
Release : 2013-05-20
Category : Science
ISBN : 0444527451

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The Encyclopedia of Electrochemical Power Sources is a truly interdisciplinary reference for those working with batteries, fuel cells, electrolyzers, supercapacitors, and photo-electrochemical cells. With a focus on the environmental and economic impact of electrochemical power sources, this five-volume work consolidates coverage of the field and serves as an entry point to the literature for professionals and students alike. Covers the main types of power sources, including their operating principles, systems, materials, and applications Serves as a primary source of information for electrochemists, materials scientists, energy technologists, and engineers Incorporates nearly 350 articles, with timely coverage of such topics as environmental and sustainability considerations