Patent ID: 7560190

Claim:
A cooling system for a battery pack having a plurality of battery modules, the cooling system comprising: a refrigerant guide member disposed at one of an upper side of the battery pack and a lower side of the battery pack, the refrigerant guide member comprising: a refrigerant introduction section disposed adjacent to a first sidewall of the battery pack, the refrigerant introduction section having an inlet and including partitions which separate adjacent battery modules of the plurality of battery modules; and a refrigerant discharge section disposed adjacent to a second sidewall of the battery pack, opposite the first sidewall of the battery pack, the refrigerant discharge section having an outlet; first refrigerant passages in fluid communication with the inlet and which extend through the first sidewall; second refrigerant passages defined by gaps between adjacent battery cells of the battery modules, the second refrigerant passages in fluid communication with the first refrigerant passages; and third refrigerant passages which extend through the second sidewall and which are in fluid communication with the outlet.