IMMERSION COOLED BATTERY ARRAY DESIGNS FOR PROVIDING ENHANCED TRACTION BATTERY THERMAL MANAGEMENT

Immersion cooling systems are provided for managing thermal energy levels of traction battery packs. A battery array of the traction battery pack may be configured to establish a multi-stream cooling fluid flow path. A cooling fluid (e.g., a dielectric fluid) may be communicated through the multi-stream cooling fluid flow path for immersion cooling battery cells of the battery array. During a battery thermal event originating from one or more upstream battery cells of the battery array, the multi-stream cooling fluid flow path may be configured to isolate hot gases and thereby prevent the hot gases from thermally influencing downstream battery cells of the battery array.