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.

Introduction:

The performance and life-cycle costs of electric vehicles (EV) and hybrid electric vehicles (HEV) depend inherently on energy storage systems such as batteries. Battery pack performance directly affects the all electric range, power for acceleration, fuel economy, and charge acceptance during energy recovery from regenerative braking. Because the battery pack cost, durability, and life also affect the cost and reliability of the vehicle, any parameter that affects the battery pack must be optimized.

Temperature and temperature uniformity have a strong influence on battery pack performance and consequently, that of HEVs and EVs. All the modules in the pack should be operated within the optimum temperature range suitable for the particular electrochemical couple used. In addition, uneven temperature distribution in a pack leads to different charge/discharge behaviour that results in unbalanced modules and reduced pack performance . Because HEV batteries have high specific power and undergo aggressive HEV charging/discharging profiles, thermal issues in an HEV pack are of more concern than in EV packs.

In this project will simulate the thermal effect of a 10S1P lithium-ion battery pack,which consist of 10 ANR26650m1-B high-performance Nanophosphate lithium iron phosphate (LiFePO4) battery technology delivers high power and energy density combined with excellent safety performance and extensive life cycling in a lighter weight, more compact package. to make its interesting,a fault has been introduced in one of the cell to demonstate the effect of the faulty cell on the entire pack.

THE THEORY PART IS REFERRED FROM THE ONLINE .

Module 1 [Cell 1-5]:

Module 2 [Cell 6]:

Module 3 [Cell 7-10]:

RESULT ;

SOC ;

TEMP ;