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October 26 th , 2011

Solar Jackets’ Racer Battery Monitoring System(BMS) Ali Bibonge Daniel Christopher Paul Martin Mark Slade Taverishima Tsegha. October 26 th , 2011. BMS Project Overview. Battery monitoring system for a solar powered race car Maintain batteries in a “safe to operate” and efficient state

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October 26 th , 2011

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  1. Solar Jackets’ Racer Battery Monitoring System(BMS)Ali BibongeDaniel ChristopherPaul MartinMark SladeTaverishimaTsegha October 26th, 2011

  2. BMS Project Overview • Battery monitoring system for a solar powered race car • Maintain batteries in a “safe to operate” and efficient state • For Solar Jackets’ entry into the American/World Solar Challenge • Cost: $1200

  3. What Does the BMS Do? • It Monitors: • Li-ion Cell Over/Under Voltages • Li-ion Cell Over Current • Battery Pack OverTemperature • Transmits/Receives acquired data via RS-485 to racer systems

  4. BMS Current Design Status • Prototype able to: • Measure module current • Measure module temperature • Electrically isolate the Li-ion cells

  5. Data Collected by the BMS • Data structure including: • Voltage data (individual cells/module) • Module temperature • Module current

  6. BMS System Flow Chart

  7. System Development Problems • Conversion of existing PIC18 code to PIC24 • Cost of electro-mechanical relay • $130.00 per relay • Space limitations in the battery module

  8. Battery Box Limitations

  9. Another View

  10. Battery Module and Cell Thresholds

  11. Temperature Green Zone Test Picture

  12. Temperature Red Zone Test Picture

  13. Project Milestones • November 4: Working voltage sensing feature with PIC24 • November 9: Testing electromechanical relay • November 16: Fabrication and assembly • December 9: Final presentation

  14. Questions?

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