Patent ID: 8492016
Filing Date: 2013-07-23
Classification: H01M,Y02E

Abstract:
1. A middle- or large-sized battery pack comprising: a module assembly constructed in a structure in which a plurality of battery modules, each of which includes a plurality of battery cells or unit modules mounted in a module case while the battery cells or unit modules are connected in series to each other, are arranged such that the battery modules are disposed in contact with each other in the lateral direction, and a coolant flow channel is vertically formed; a plurality of support members for supporting opposite sides and the bottom and the top of the module assembly and maintaining the arrangement state of the module assembly; and a pack housing for surrounding the module assembly and the support members, wherein the support members include: a pair of side support members for preventing the coolant from leaking to the outside while surrounding sides of the outermost battery modules of the module assembly; a pair of bottom support members for supporting front and rear lower ends of the module assembly while spacing the module assembly from the bottom by a predetermined height, the bottom support members being coupled to the side support members; at least one top connection member connected to the side support members for guiding the coolant to the module assembly from the top of the module assembly, wherein the battery pack is constructed in a cooling structure in which a coolant is introduced through one side upper end (or lower end) of the module assembly along a hermetically sealed space defined by the support members, flows vertically through the module assembly, and is discharged through the other side lower end (or upper end) of the battery assembly, and wherein the pack housing includes a housing body coupled to the base plate while the housing body surrounds the top of the module assembly and the side support members, a front plate mounted to the front of the housing body, and a rear plate mounted to the rear of the housing body.