Patent ID: 8557429
Filing Date: 2013-10-15
Classification: H01M,Y02E

Abstract:
1. A battery pack comprising: a plurality of battery modules, each having two opposing long sides, two opposing short sides that are shorter than the long sides, and two opposing end surfaces, being covered by a film, and including a plurality of cells arranged in line, the plurality of battery modules being arranged in a direction perpendicular to a cell arrangement direction in which the cells are arranged, each of the cells having a rectangular parallelepiped shape and a safety valve, and the cells being separate from each other, connected with each other in series, and placed so that the safety valves of the cells face one of the short sides of the battery modules, end faces of the cells face each other, and long sides of the cells form a continuous surface along each of the long sides of the battery modules; a plurality of holding spacers placed one each between the battery modules to hold the battery modules located on both sides of each holding spacer, each holding spacer including a spacer body made of resin having electrical insulating properties and formed in a plate-like shape, and the spacer body including, on both sides of the spacer body, protrusions for forming cooling passages by contacting the long sides of the battery modules, the battery modules and the holding spacers being integrally retained; and a first spacer support member and a second spacer support member which hold the holding spacers therebetween in a vertical direction perpendicular to both the cell arrangement direction and a module arrangement direction in which the battery modules are arranged, wherein: