Patent ID: 9741984
Date: 2017-08-22
CPC Classifications: B60L,H01M,Y02E,Y02T

Claim:
1. A battery module comprising: a unit module stack configured to have a structure in which two or more unit modules, each of which comprises two or more battery cells surrounded by a cell cover in a state in which the two or more battery cells are electrically connected to each other by vertically bending electrode terminals of the battery cells to form electrode terminal connection parts, the electrode terminal connection parts protrude outward from the cell cover in a state in which the electrode terminal connection parts extend vertically to define electrode terminals of the unit module, are stacked; a module case in which the unit modules of the unit module stack are arranged such that the unit modules are connected in series to each other, and the electrode terminals of the unit modules are exposed through the module case; a bus bar assembly mounted at the electrode terminals of the unit modules in the module case, the bus bar assembly comprising one or more bus bars for connection in series between the unit modules, the bus bars being mounted in an exposed state such that welding is performed from an outside of the module case; and an electrically insulative cover for covering the bus bar assembly, wherein the module case is provided at an outer surface thereof with one or more coupling parts for mounting the battery module to a device or a pack case, and wherein the coupling parts extend along the outer surface of the module case in a vertical direction in a state in which the coupling parts protrude from the outer surface of the module case, a height of each of the coupling parts being equal to a height of the module case, and each of the coupling parts is provided with a depressed groove, which extends linearly along a vertical central axis of each of the coupling parts.