Patent ID: 8387733
Filing Date: 2013-03-05
Classification: B60K,B60L,H01M,Y02E,Y02P,Y02T

Abstract:
1. A battery pack, comprising: a battery assembly including a plurality of stacked battery modules stacked together, each having stacking direction of said plurality of battery modules being the same as stacking direction of said positive electrode and said negative electrode; a cooling passage allowing passage of a cooling medium, said cooling passage including an inlet passage provided along a first one of said plurality of battery modules arranged at one end in said stacking direction, through which said cooling medium is introduced, an outlet passage provided along a second one of said plurality of battery modules arranged at the other end in said stacking direction, through which said cooling medium is let out, a direction turning portion changing flow direction of said cooling medium introduced from said inlet passage and passing said cooling medium to said outlet passage, and a plurality of walls dividing said cooling passage into a plurality of passages are formed in said cooling passage, wherein among said plurality of passages, one positioned at a central portion of said cooling passage has a narrower width than another of the plurality of passages that is positioned at an end portion of said cooling passage.