Project 2

Project:2

Lithium ion

Using MATLAB/ Simulink and the drive cycle from the attached excel sheet, find-

1. The max heat generation of the battery
2. The SOC of the battery at 2 *104second of the battery operation

1. Maximum heat generation of the battery

The maximum current in the drive cycle is I= -0.896 at time t= 2minitue (120seconds)

Battery resistance = 2milliohm

Maximum heat generated = I^2Rt = (-0.896^2) *2*120 = 0.192 watt

The total heat generated = joule heat + Entropic heat

= 0.192W+2(0.192W)

=0.576 watt

The maximum heat generation of the battery is 0.576 watt

1. The SOC of the battery at 2*104 second of the battery operation

Current controlled source

Battery

Bus selector

Scope

Signal builder

Resistor

• The signal builder is given as the input to the model
• The simulation time is 2*104 is 208 sec
• 208 is a simulation time
• Signal builder is given to the current controller source which is connected to the batter as a load
• So here the battery is discharged according to this signal given by the data
• The powergui block is required for any simulation of the Simulink model
• It is mainly used to store the equipment Simulink circuit which represents the state space model
• The output of a battery is given to the scope through the bus selector