Measuring the Temperature and Voltage of a Lithium Ion Battery

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Presentation transcript:

Measuring the Temperature and Voltage of a Lithium Ion Battery Ian Buck

Outline Purpose The Battery Procedure Materials Results

Purpose The Purpose of the project is to test for battery life through charging and discharging. While charging and discharging, temperature must be monitored for safety.

The Battery: Specifications Li-ion Battery 55 cells 175 Volts

Materials: NTC Thermistor NTC Thermistor’s were used to read voltage and from the voltage, and temperature was calculated. As the Temperature changed, so did the resistance.

Materials: Board Sensors attached to each battery cell Thermistor’s attached to two cells in each row Board then connects to Laptop

Materials: Software LTC6804/LTC6811 Multicell Monitor Logs Data from board into an excel

Results: General input/output Temperature

Results: General input/output Voltage

Labview Program The purpose of the Matlab program is to graph the data after the test, whereas the Labview Program is to show the temperature and voltage during the Test

Voltage The program reads the voltage data from the data-log. The program displays the average voltage of each row. The graph is the voltage of the whole battery.

Temperature For Temperature, the program displays the general temperature for each thermistor. The graph displays average temperature of all thermistors