Patent ID: 7618740
Filing Date: 2009-11-17
Classification: H01M,Y02E

Abstract:
1. A cooling device for a battery pack including a plurality of prismatic rechargeable batteries arranged in parallel so that their longer side faces are opposed to each other, each of the rechargeable batteries having a height larger than a thickness of shorter side surfaces and the longer side faces with a width in a horizontal direction larger than the height, the cooling device comprising: a cooling medium path that allows a cooling medium to flow in right and left directions between the longer side faces of the rechargeable batteries; and a cooling medium delivery device that delivers the cooling medium to the cooling medium path, wherein the cooling medium path is horizontally formed between the longer side faces of the rechargeable batteries so that the cooling medium flows horizontally therethrough, and each rechargeable battery includes a plurality of connection terminals provided on both shorter side surfaces thereof, and an upper rib and lower rib are provided respectively at the upper and lower ends of the longer side faces, the upper rib and the lower rib extend along the entire length of the longer side faces forming the cooling medium path, and wherein the cooling medium path has upper and lower ends closed by the upper rib and the lower rib, and further has open right and left ends.