Project 2

AIM :

         To design and calculation of battery temprature using MATLAB/simulink and  the drive cycle from the attached excel sheet, and the max heat generation of the battery and SOC of the battery calculation. 

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

Consider the battery resistance is 0.5 mOhm, delta time is 0.1 and entropic factor is 2

    The battery temptrature calculation using drive cycle frome the excel sheet value this file some given value is availble to using the current and time to maximum and minimum value of the heat.

   Given :

          The Max Current and minimum current and battery houres and resistance all given parameter

             Heat Generated = Joules Heat + entropy heat 

  Heat generated is the calculation of ohms law Voltage and current and resistance to battery.

   Ohms law 

              V = I*R

     The heat calculated is the  current flowing throuth the resistance of the battery to battery heat is dissipated in the resistor. that time producing the heat using heat dissipated time to calculeted the joules calculation.

  Calculated Power is the joules heat is to the resistance of ohms  heat, so calculated powe

    Power P = V * I^2 * R

     heat    H =  ∫P.dt with the limits of time 0 to t

               H = I^2*R*t

   V = Voltage,

   P = Power,

   I  =  Current,

   R = Resistance,

    t = time,

    H = heat.

 Entropy Heat :    is a scientific concept, as well as a measurable physical property, that is most commonly associated with a state of disorder, randomness, or uncertainty. The term and the concept are used in diverse fields, from classical thermodynamics, where it was first recognized, to the microscopic description of nature in statistical physics. 

       the heat generation due to entropy change inside a battery occurs when electro chemical reaction are performed. the entropy heat is reversible heat resulting from change in open circuit voltage with respect to temperature at two electrodes.

    the battery resistance is 0.5 mOhm, delta time is 0.1 and entropic factor is 2

    Battery resistance = 0.5 m Ohms 

                               = 0.0005 Ohms.

a . The max heat generation of the battery 

         The calculate max current of I max :

         Max heat generation = maximum joule heat + 2(maximum joule heat )

          maximum current Imax = -0.896 A

                                  time t  = 1.7 sec

                                         R  = 0.0005 Ohms. 

               maximum joule heat = (Imax)^2*R*tmax

                                              = (-0.896)^2*0.0005*1.7

                                              = 0.0006823936j

        Maximum heat generation = maximum joule heat + 2(maximum joule heat )

        Maximum heat generation = 0.00068236j + 2(0.00068236j)

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

     The SOC of the battery is 2*104 second of the battery 208 second the SOC is the state of charge 

 SOC = Q/Qmax 

         the simulink modul is battery and singal bilder source and SOC block is bus selector block used and scope.

   BATTERY :

Implements a generic battery model for most popular battery types. Temperature and aging (due to cycling) effects can be specified for Lithium-Ion battery type.

    CONTROLLER CURRENT SOURCE :

     Converts the Simulink input signal into an equivalent current source. The generated current is driven by the input signal of the block. You can initialize your circuit with a specific AC or DC current. If you want to start the simulation in steady-state, the block input must be connected to a signal starting as a sinusoidal or DC waveform corresponding to the initial valu

  BUS SELECTOR :

This block accepts a bus as input which can be created from a Bus Creator, Bus Selector or a block that defines its output using a bus object. The left listbox shows the elements in the input bus. Use the Select button to select the output elements. The right listbox shows the selections. Use the Up, Down, or Remove button to reorder the selections. Check 'Output as virtual bus' to output a single bus.

  SCOPE AND POWER GUID :

       Scope is the display to singnal output ans power guid Set simulation type, simulation parameters, and preferences.

SIMULINK MODUL OF SOC :

   RESULT OF MATLAB SIMULINK MODEL :

 CONCLUSION :

             To conclusion of the result is calculate joule heat andbattery SOC design of matlab simulink model all the result completed.