Battery module

摘要

Disclosed herein is a battery module including two or more plate-shaped battery cells, as unit cells, constructed in a stacked structure in which electrode terminals of the battery cells are connected in series with each other and the electrode terminal connections are bent such that the battery cells are stacked, and a pair of high-strength cell covers for surrounding the outer surfaces of the battery cells when the cell covers are coupled with each other. The present invention has the effect of easily mounting a sensing unit that is capable of minimizing the weight and size of battery cells while effectively reinforcing the low mechanical strength of the battery cells and sensing the operation state of the battery cells to a battery module. In addition, the present invention has the effect of manufacturing the battery module by a simple assembly process without using a plurality of members for mechanical coupling and electrical connection, thereby decreasing the manufacturing costs of the battery module, and effectively preventing the battery module from being short-circuited or damaged during the manufacture or the operation of the battery module. Furthermore, the present invention has the effect of manufacturing a middle- or large-sized battery system having desired output and capacity using the battery module as a unit body.

主权项

1. A battery module including plate-shaped battery cells having electrode terminals formed at the upper and lower ends thereof, wherein the battery module comprises:
two or more battery cells constructed in a stacked structure in which the battery cells are connected in series with each other such that electrode terminal connections between electrode terminals of successively adjacent battery cells are bent such that the battery cells are stacked, wherein each battery cell is constructed in a structure in which an electrode assembly is mounted in a case made of a laminate sheet including a metal layer and a resin layer, and an edge of the case is sealed; and a pair of cell covers for surrounding the outer surfaces of the battery cells excluding the electrode terminals of the battery cells when the cell covers are coupled with each other, wherein each cell cover includes elastic coupling parts that directly engage with the elastic coupling parts of the other cell cover to couple the cell covers with each other, wherein the cell covers are each entirely made of a metal sheet.