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Automotive Lead-Acid Battery State-of-Health Monitoring System

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dc.contributor.authorKerley, Ross Andrewen
dc.contributor.committeechairHa, Dong Samen
dc.contributor.committeememberKoh, Kwang-Jinen
dc.contributor.committeememberLi, Qiangen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2016-02-28T07:00:15Zen
dc.date.available2016-02-28T07:00:15Zen
dc.date.issued2014-09-05en
dc.description.abstractThis thesis describes the development of a system to continuously monitor the battery in a car and warn the user of an upcoming battery failure. An automotive battery endures enormous strain when it starts the engine, and when it supplies loads without the engine running. Note that the current during a cranking event often exceeds 500 Amperes. Despite the strains, a car battery still typically lasts 4-6 years before requiring replacement. There is often no warning of when a battery should be replaced and there is never a good time for a battery failure. All currently available lead-acid battery monitoring systems use voltage and current sensing to monitor battery impedance and estimate battery health. However, such a system is costly due to the current sensor and typically requires an expert to operate the system. This thesis describes a prototype system to monitor battery state of health and provide advance warning of an upcoming battery failure using only voltage sensing. The prototype measures the voltage during a cranking event and determines if the battery is healthy or not. The voltage of an unhealthy battery will drop lower than a healthy one, and it will not recover as quickly. The major contributions of the proposed research to the field are an algorithm to predict automotive battery state-of-health that is temperature-dependent and a prototype implementation of the algorithm on an ARM processor development board.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:3617en
dc.identifier.urihttp://hdl.handle.net/10919/64870en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectLead Acid Batteryen
dc.subjectState of Chargeen
dc.subjectState of Healthen
dc.titleAutomotive Lead-Acid Battery State-of-Health Monitoring Systemen
dc.typeThesisen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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