HEV Battery Pack Thermal Management Design and Packaging Solutions

Paper #:
  • 2017-01-0622

Published:
  • 2017-03-28
DOI:
  • 10.4271/2017-01-0622
Citation:
Janarthanam, S., Paramasivam, S., Maguire, P., Gebbie, J. et al., "HEV Battery Pack Thermal Management Design and Packaging Solutions," SAE Int. J. Engines 10(3):2017, doi:10.4271/2017-01-0622.
Pages:
5
Abstract:
Hybrid Electric Vehicles (HEV) utilize a High Voltage (HV) battery pack to improve fuel economy by maximizing the capture of vehicle kinetic energy for reuse. Consequently, these HV battery packs experience frequent and rapid charge-discharge cycles. The heat generated during these cycles must be managed effectively to maintain battery cell performance and cell life. The HV battery pack cooling system must keep the HV battery pack temperature below a design target value and maintain a uniform temperature across all of the cells in the HV battery pack. Herein, the authors discuss some of the design points of the air cooled HV battery packs in Ford Motor Company’s current model C-Max and Fusion HEVs. In these vehicles, the flow of battery cooling air was required to not only provide effective cooling of the battery cells, but to simultaneously cool a direct current high voltage to low voltage (DC-DC) converter module. In addition to the fundamental heat transfer goals, the design team overcame package challenges on cooling air flow distribution to both cell arrays and DC-DC convertor and air rush concerns. This paper describes the work the team completed to successfully balance the design requirements.
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