Lithium-ion based batteries have become the prevalent choice for a diverse range of applications, especially in systems that such as electric-based transportation, grid storage, and portable power equipment. As such, many of these applications require an effective thermal management system in order to maintain optimal thermal stability from both a safety and performance standpoint. Susceptibility of most commercial lithium-ion chemistries to degrade at elevated operating temperatures can lead to significant loss of capacity over subsequent charge/discharge cycles, reducing overall battery life and performance. Also, mitigation of detrimental thermal runaway events is critical for safe use, especially in applications such as electric vehicles, where catastrophic and possibly lethal failures can occur.
In this presentation a novel thermal management system will be demonstrated which offers a solution to both these safety and performance concerns through the use of latent heat storage (LHS) material that are able to absorb and store significant thermal energy while being inherently flame retardant, substantially increasing the overall thermal stability of a battery system. The ability of these LHS-based systems to maintain optimal cycling performance and inhibit thermal runaway will be explored and the benefits of these materials into a variety of application-specific design configurations will be detailed.