BATTERY PACK HOUSING HAVING PLATE ASSEMBLY WITH AIR PASSAGES AND FINS

A battery pack assembly that communicates with a heating ventilation and air conditioning (HVAC) system for an electrified vehicle is provided. The battery back assembly includes a battery pack housing and a plurality of battery cells. The battery pack housing includes a plate assembly and a plurality of fins. The plate assembly comprises a first plate that defines a first air passage therethrough and a second plate that defines a second air passage therethrough. The fins are connected to and extend between the first and second plates. The plurality of battery cells are disposed in the battery pack housing. A first battery cell is positioned between adjacent fins. Heat generated from the plurality of battery cells is transferred (i) conductively to the fins and to the plate assembly; and (ii) convectively from the plate assembly to the air travelling through the first and second air passages.