Design and Comparison of Cooling Plates for a Commercial Pouch Lithium-ion Battery for Electrified Vehicles

Paper #:
  • 2018-01-1188

Published:
  • 2018-04-03
Abstract:
An effective thermal management of lithium-ion battery (LIB) packs for maintaining their operating temperature uniform and in the manufacturers’ allowable range can significantly affect their lifespan for electric and hybrid vehicles. For this purpose, two liquid cooling plates with different flow patterns are designed and compared for a commercial pouch LIB with a graphite anode and lithium iron phosphate cathode (LiFePO4) chemistry. The analysis of the cooling plates is accomplished through mathematical modeling and computer simulation. For the simulation, the maximum continues discharge rate (C-rate) of the battery is considered 5C. The cooling plates are designed to dissipate the maximum possible heat generated in the battery, which is during the continuous discharge of the battery at 5C. An experiment is conducted to determine the local heat flux from the battery during discharge at 5C from the state of charge (SOC) of 0 to 100%. The cooling plates are studied for different liquid flow rates to determine the optimum design parameters and achieving the minimum pressure drop and temperature gradient on the surface of the battery. Overall, this study provides a new design for cooling plates for LIBs for electrified vehicles
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