Abstract: A battery pack (1) for an electric vehicle is attached to the bottom surface of a vehicle floor from below so that the bottom part protrudes downward from the vehicle floor. A lower case (11) that constitutes part of a case (10) is die-cast from an aluminum alloy together with an upper case (12), and has a plurality of cooling fins (66) that extend in the vertical direction integrally formed in the front wall (51) and rear wall (52) thereof. These cooling fins (66) improve the heat-release characteristics and also serve as protectors for protecting the corners of the bottom part of the battery pack (1) in the event of an impact with a curb or the like. Cooling fins (66) are provided adjacent to both sides of a safety valve (16) so as to protect the safety valve (16) from impacts.

Abstract: Provided is an assembled battery module in which a plurality of laminated cells can be assembled within a short time. An assembled battery module comprising: a plurality of laminated cells 1 being stacked on each other, each of the plurality of laminated cells 1 including positive electrode terminal 1a and negative electrode terminal 1b, positive electrode terminal 1a and negative electrode terminal 1b being pulled out in the same direction; terminal fixing plate 3 disposed on a side of the plurality of laminated cells 1 to which positive electrode terminals 1a and negative electrode terminals 1b are pulled out; and terminal connection board 2 disposed between the plurality of laminated cells 1 and terminal fixing plate 3 and secured to terminal fixing plate 3, terminal connection board 2 including a plurality of terminal through-holes 2a each receiving positive electrode terminal 1a or the negative electrode terminal 1b.