Week 7 State of charge estimation
1.Simulate the 3 test cases from harness dashboard and write a detailed report on the results
2.What is coulomb counting? Refer to the above model and explain how BMS implements coulomb counting for SOC estimation ?
model setup:-
The above model is battery management system(BMS) which does the computations.The block represnt a battery pack.
this a dashboard of a vehicle it indicates the battery sates - Balancing ,charging and driving LEDs indicates eeror or any faluts.
- case 1
- driving-balancing-charging-balancing
case 2:-
driving-charging
case 3 is charging
from this the results are analysed
RESULTS:-
case1:- Balancing-charging-balancing
case2 :-Drive charge
case 3 :-charging
The Coulomb counting method measures the discharging current of a battery and integrates the discharging current over time in order to estimate SOC Coulomb counting method is done to estimate the , which is estimated from the discharging current, , and previously estimated SOC values, .
BMS implements coulomb counting for SOC estimation ?
inside BMS ECU block we have SOC block
within SOC estimation block we have coulumb counting.
by coulumb counting SOC estimation is done.
temp and current is given as input for coulumb counting.
current signal given to gain block
inputs are interagted and current is integrated with respect to time
this ouput goes further to another block where its diveded by capacity
from this SOC is calculated