ETD RECORD
State of charge indicator (SOCI) design for the lithium polycarbon monoflouride (Li/CFx) battery /Edward James William II.
Citation
William, Edward James,II.. (2010). State of charge indicator (SOCI) design for the lithium polycarbon monoflouride (Li/CFx) battery /Edward James William II.. Theses and Dissertations Collection, University of Idaho Library Digital Collections. https://www.lib.uidaho.edu/digital/etd/items/etd_97.html
- Title:
- State of charge indicator (SOCI) design for the lithium polycarbon monoflouride (Li/CFx) battery /Edward James William II.
- Author:
- William, Edward James,II.
- Date:
- 2010
- Keywords:
- Lithium cells--Design and construction
- Program:
- Electrical Engineering
- Abstract:
- The lithium polycarbon monoflouride (Li/CFx) battery has dynamic environmental conditions, such as the ambient temperature history. The current SOCI technology has a problem with flat discharge curves where state of charge (SOC) is a function of voltage (V). The intended usage of the SOCI is for monitoring military cells, with extension to any battery with flat discharge profile.;This dissertation provides a solution for monitoring this Li/CFx discharge behavior. This non-linear solution is achieved in the form of an Artificial Neural Network (ANN) algorithm. This dissertation will take an in-depth look into the ANN algorithm and how it will be trained. Moreover, the trained ANN-based algorithm will be programmed into a MSP430 microcontroller and will improve non-linear discharge SOCI accuracy. This solution is estimated to be successful in giving us an approximate SOC within 2-3% margin of error.;Moreover, this dissertation provides a scientific contribution in the form of a correction to internal resistance equation (4-13), Li/CFx battery mathematical model, SOCI prototype, and cost analysis. The SOCI is composed of circuit, ANN algorithm, MSP430 microcontroller, and a five light-emitting diode (LED) output display. Its output display will function as a SOCI that shows five initiated LEDs that demonstrate a 100% fully charged Li/CFx battery. The SOCI will adjust the engaged LED display proportionally as battery discharges, and finally all LEDs will be disengaged to demonstrate the battery is discharged at 0%.
- Description:
- Thesis (Ph. D., Electrical Engineering)--University of Idaho, May 2010.
- Major Professor:
- Herbert Hess.
- Defense Date:
- May 2010.
- Type:
- Text
- Format Original:
- xvii, 259 leaves :ill. ;29 cm.
- Format:
- record
Rights
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- In Copyright - Educational Use Permitted. For more information, please contact University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu.
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