THERMAL INSULATING JOINTS FOR TRACTION BATTERY PACKS

Exemplary traction battery pack designs for use in electrified vehicles may include a thermal insulating joint configured to isolate a heat transfer path at one or more structural connections between an enclosure tray and a battery internal structure (e.g., heat exchanger plate, cross member, etc.) of the traction battery pack. The thermal insulating joint may include a first thermal insulation component and a second thermal insulation component disposed on opposite sides of the battery internal structure. The thermal insulation components cooperate to block the heat transfer path across the structural connection, thereby insulating the battery internals from an ambient surrounding of the traction battery pack.