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Comparing thermal characteristics of Li-ion cells

  • Magazine Feature Article
  • 11EVSD0525_03
Published May 25, 2011 by SAE International in United States
Language:
  • English

Most Li-ion battery suppliers require that the cell temperature be as uniform as possible to achieve optimal battery performance and avoid battery system failure. But some materials in Li-ion cells have low thermal stability.

The thermal management of a lithium-ion battery system is crucial to both battery system safety and battery life. For vehicle propulsion applications, reliability of the battery system must be high and allow for 10 to 15 years of operation.

However, these requirements often result in large temperature differences in battery cells. Most Li-ion battery suppliers require that the cell temperature be as uniform as possible to achieve optimal battery performance and avoid battery system failure. But some materials in Li-ion cells have low thermal stability.