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Multi-Cell Lithium-Ion Battery Management System

For Electric Vehicle. Team Members Pramit Tamrakar- Electrical Engineering Jimmy Skadal- Electrical Engineering Hao Wang- Electrical Engineering Matthew Schulte- Electrical Engineering Advisor Ayman Fayed Client Adan Cervantes- Element One Systems Team-id - SdMay11-04.

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Multi-Cell Lithium-Ion Battery Management System

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  1. For Electric Vehicle • Team Members • Pramit Tamrakar- Electrical Engineering • Jimmy Skadal- Electrical Engineering • Hao Wang- Electrical Engineering • Matthew Schulte- Electrical Engineering • Advisor • Ayman Fayed • Client • Adan Cervantes- Element One Systems • Team-id- SdMay11-04 Multi-Cell Lithium-Ion Battery Management System

  2. Project Goals and System Diagram Design a Lithium Ion Battery Charger that is capable of safely charging 16 parallel packs of 90 cells in series. Successfully build a small scale 18 cell charger that is capable of monitoring and balancing the scaled down system.

  3. MSP430 Launch Pad Buck Circuit Bq76pl536EVM-3 Evaluation module For battery management

  4. Functional Decomposition (Hardware)

  5. Functional Decomposition (Software)

  6. UCC28019AEVM Boost Circuit Will supply the needed maximum 324 volts to the buck circuit for the large scale charger 350 W Power Factor Correction (PFC) boost converter 390 VDC regulated output 0.9 A of load current Advanced fault protection

  7. Buck circuit and Feedback Loop • The buck circuit will take the voltage generated by the boost buck down to cells • The negative feedback loop • Negative feedback tends to compare actual voltage with desired voltage and seeks to reduce the difference Scaled down buck circuit Value of components

  8. Battery Management System • Texas Instruments bq76PL536EVM-3 and MSP430 microcontroller to monitor and regulate the Li-Ion batteries and send information packet to the processor.

  9. Battery Management System • Programming using C and WinGUI • Use SPI with an MSP430 to gather the data and make decisions based on battery status

  10. Implementation of the bq76pl536 with 6 series cells in each

  11. Test Plan • Subsystem test: • Boost Converter • System DC supply • Buck Converter • All necessary voltages and currents • Battery Management System communication • USB-SPI Processing GUI • Integration Test (scaled down): • 18 cell charge/discharge • 32.4V-72V CC, 72V CV until 0.3A to batteries

  12. Schedule Progress

  13. Cost Breakdown

  14. Questions ?

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