TRACTION BATTERY PACK HAVING BATTERY CELL HOLDERS THAT GUIDE COOLANT

A traction battery pack assembly includes an array container, battery cells within the array container, and battery cell holders that each hold at least one of the battery cells. The battery cell holders partition an interior of the array container into a coolant section and a coolant-free section. A traction battery pack thermal management method includes, within an interior of an array container, using battery cell holders to hold battery cells, and additionally using the battery cell holders to partition the interior into a coolant section and a coolant-free section.