Valve regulated lead acid batteries-gas and heat management

Berndt, Dietrich

doi:10.1109/intlec.1988.22330

Cited by 10 publications

(7 citation statements)

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“…Another finding to consider in the case of the vented lead acid battery is that the float current is magnified ten times when the cell voltage is increased by 200 mV [17]. One would anticipate a similar effect in VRLA cells.…”

Section: Currentmentioning

confidence: 97%

“…Temperature has one of the largest effects on the current acceptance [14]. A floating charge current at 20 deg C was doubled at 40 deg C. The float current is markedly higher for the VRLA than the vented cell [17] and most of the float current is consumed by the internal oxygen cycle. This energy is completely transformed into heat in the cell.…”

Section: Currentmentioning

confidence: 99%

“…Heat production has two sources -electrochemical reaction called "heat of reaction" and the Jouleeffect produced by any electric resistance. In the cases of lead acid battery the Jouleeffects are much stronger and cover the temperature effects of the heat of reaction [17].…”

Section: -3mentioning

confidence: 99%

“…The main cooling effect is heat dissipated through the cell side wall [17]. This means the cooling of larger cells will be more difficult because there is more volume in which to generate heat with less proportional surface area with which to cool.…”

Section: -3mentioning

confidence: 99%

“…This means the cooling of larger cells will be more difficult because there is more volume in which to generate heat with less proportional surface area with which to cool. It also means that cells should be arranged so that the cooling of each cell, even cells in the middle, can take place [17].…”

Section: -3mentioning

confidence: 99%

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A total battery monitoring program for the telecommunications industry

Modisette¹

Proceedings of Intelec 94

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Considerable information has been provided on VRLA batteries concerning battery and ambient temperatures, float voltage for cells and strings, float current, and battery capacity. Often these characteristics have been considered separately or in incomplete sets. Telecommunications personnel using the Lead-Acid Battery in the field don't have a comprehensive, single source for reference. A source is needed that provides guidelines for selecting the various points of operation with a brief explanation for each. This paper meets this need by describing a program for total battery monitoring, management, record keeping, and maintenance. Monitored characteristics and selected ranges are justified by reference to published information.This program will utilize existing information to provide optimal battery life, battery capacity, remaining operating time both at present load and at maximum load, energy efficiency, and warranty records with less personnel. This program will also locate deficient cells or blocks and provide records to indicate conditions that lead to the failure and to provide support of a warrantee claim. A reduction in personnel is possible, since sites only require attention when a problem is indicated and the proper equipment to correct the problem can be obtained before the site visit.

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Section: Currentmentioning

confidence: 97%

Section: Currentmentioning

confidence: 99%

Section: -3mentioning

confidence: 99%

Section: -3mentioning

confidence: 99%

Section: -3mentioning

confidence: 99%

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A total battery monitoring program for the telecommunications industry

Modisette¹

Proceedings of Intelec 94

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Review on the research of failure modes and mechanism for lead-acid batteries

Yang

Wang

et al. 2016

Int. J. Energy Res.

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Summary The lead–acid battery (LAB) has been one of the main secondary electrochemical power sources with wide application in various fields (transport vehicles, telecommunications, information technologies, etc.). It has won a dominating position in energy storage and load‐leveling applications. However, the failure of LAB becomes the key barrier for its further development and application. Therefore, understanding the failure modes and mechanism of LAB is of great significance. The failure modes of LAB mainly include two aspects: failure of the positive electrode and negative electrode. The degradations of active material and grid corrosion are the two major failure modes for positive electrode, while the irreversible sulfation is the most common failure mode for the negative electrode. Introduction of carbon materials to the negative electrodes of LAB could suppress sulfation problem and enhance the battery performance efficiently. This paper will attempt here to pull together observations made by previous research to obtain a more comprehensive and integrative view of LAB failure modes. Moreover, according to a detail investigation to the battery market, we have drawn an objective and optimistic conclusion of LAB prospect. Copyright © 2016 John Wiley & Sons, Ltd.

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Fast charging of lead-acid batteries

Valeriote¹,

Chang²,

Jochim³

Proceedings of 9th Annual Battery Conference on Applications and Advances

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Valve regulated lead acid batteries-gas and heat management

Cited by 10 publications

References 0 publications

A total battery monitoring program for the telecommunications industry

A total battery monitoring program for the telecommunications industry

Review on the research of failure modes and mechanism for lead-acid batteries

Fast charging of lead-acid batteries

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