Upload
price-noble
View
43
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Solar Jackets’ Racer Battery Management System(BMS) Ali Bibonge Daniel Christopher Paul Martin Mark Slade Taverishima Tsegha. December 7 th , 2011. BMS Project Overview. Battery monitoring system for a solar powered race car Maintain batteries in a “safe to operate” and efficient state - PowerPoint PPT Presentation
Citation preview
Solar Jackets’ Racer Battery Management
System(BMS)Ali Bibonge
Daniel ChristopherPaul MartinMark Slade
Taverishima Tsegha
Solar Jackets’ Racer Battery Management
System(BMS)Ali Bibonge
Daniel ChristopherPaul MartinMark Slade
Taverishima Tsegha
December 7th, 2011
2
BMS Project OverviewBMS 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
Overall BMS cost of $1200
3
Proposed Design ObjectivesProposed Design Objectives
It monitors: Li-ion cell over/under voltages Li-ion cell over current Battery pack over temperature
Electrically isolate the Li-ion cellsTransmits or receives acquired data via
RS-485 to racer systems
4
Current Design FunctionalityCurrent Design Functionality
It monitors: Li-ion cell over current Battery pack over temperature
Electrically isolate the Li-ion cellsThe RS-485 communication component
has been incorporated into the BMS PCB and is ready for programming
5
BMS System Flow ChartBMS System Flow Chart
PrototypingPrototyping
6
PrototypingPrototyping
7
8
TestingTesting
Something here...
9
Demonstration of Temperature Sensor Demonstration of Temperature Sensor
10
Demonstration of Current Sensor Demonstration of Current Sensor
11
System Development ProblemsSystem Development Problems
Programming of the LTC chip for measuring voltages
The LTC chip has been included on the PCB for further programming
Georgia Tech milling machine is broken
12
Final BudgetFinal Budget
Total amount spent is approximately $400
This covers the electromechanical relay, LM 35 temperature sensors, ACS758 current sensors, DC fuse/fuse holder, and copper bus/connectors
13
Battery Module and Cell ThresholdsBattery Module and Cell Thresholds
Green Zone
Yellow Zone
Red Zone
Temperature
< 40 C 40 C - 45 C > 45 C
Discharge Current
< 40 A 40 A - 60 A > 60 A
Charge Current
< 16 A 16 A - 18 A > 18 A
Voltage (module)
85 V - 103 V
103 V - 105 V
> 105 V
Voltage(Li-ion cell)
2.6 V - 3.3 V
3.3 V - 3.6 V
2.3 V - 2.6 V
> 3.6 V< 2.3 V
14
Recommended Future WorkRecommended Future Work
LTC programming Incorporating the electromechanical
relay into the battery box RS-485 programming Mounting PCB components
15
Questions?