Coolants are typically liquids that allow the transfer of heat between the battery cells and a heat sink. Typically the heat sink is air, but could be water for a boat or a ground heat sink for stationary battery packs.

The most commonly used coolants are:

  • Water
  • Deionized water
  • Water glycol
  • Dielectric fluids
    • Single phase
    • Two phase
  • Refrigerants

Dielectric Fluids

The key parameters for dielectric fluids have been proposed in different formats and hence important to look at those to ensure that you don’t miss a factor in any given application.

There are many options for cooling batteries. However, dielectric immersion cooling is seen as perhaps the ultimate high performance cooling method for battery cells. In this particular case we are focusing on the single phase dielectric cooling fluids.