Project 2 Thermal modeling of battery pack
AIM:- For a 10 cell series lithium ion battery model, simulate the thermal effects and compare life cycle performance at various temperatures, charge & discharge rates using MATLAB.
Solutiom#:-
Component Requirement:
1. Battery (Table-Based)
to activate the soc option
2. Thermal Reference:-
This block represents a reference point in a thermal network where the temperature is equal to absolute zero
3. Temperature Sensor:-
This block measures temperature in a thermal network. There is no heat flow through the sensor. The physical signal port T reports the temperature difference across the sensor. The measurement is positive when the temperature at port A is greater than the temperature at port B.
4. Convective Heat Transfer:-
This block models heat transfer in a thermal network by convection due to fluid motion. The rate of heat transfer is proportional to the temperature difference, heat transfer coefficient, and surface area in contact with the fluid.
5. Temperature Sensor:-
6. PS-Simulink Converter:- to convert some physical quantity to Simulink data
7. Electrical Reference:-
8. Solver Configuration:-
9. Scope for output waveform:-
10. Controlled Current Source for Discharge the battery with some constant discharge current
11. Signal builder:-
12. Add block:-
10 cell series lithium-ion battery schematic diagram:
SIMSCAPE MODEL:-
I am Testing the series batteries with the constant discharge current on different operating temperatures ranging from 300K to 390K.
Temperature Chart:
|
K |
degC |
|
300 |
26.85 |
|
330 |
56.85 |
|
360 |
86.85 |
|
390 |
116.85 |
1. The result on 300K temperature:
2. The result on 330K temperature:
3. The result on 360K temperature:
4. The result on 390K temperature:
Comments:
|
K |
degC |
SoC% |
|
300 |
26.85 |
14.6% |
|
330 |
56.85 |
14.3% |
|
360 |
86.85 |
7.14% |
|
390 |
116.85 |
2.38% |
Conclusion:-
As you can see the with the rise in temperature the SoC decreases which means that if we operate the battery at a high temperature than the rated temperature then the battery will discharge fast and the life of the battery will decrease. accordingly.