The present invention provides a battery module, which includes: a plurality of battery cells which include electrode tabs, respectively; and one or more bus bars connected to the electrode tabs for electrically connecting the plurality of battery cells with each other, wherein each of the one or more bus bars includes a plate having one or more openings formed therein, and a plurality of adjacent electrode tabs among the electrode tabs are inserted into any one of the one or more openings of the plate to be electrically connected with each other.

A battery pack includes a battery assembly including six batteries each having a cylindrical external shape, and electrode terminals at both end portions in a cylindrical axis direction, respectively, are arranged in a second direction perpendicular to the cylindrical axis direction in which cylindrical axes thereof are in parallel or substantially in parallel, and a tab to connect the electrode terminals of the six batteries. Assuming that three batteries arranged in the second direction are a first battery, a second battery, and a third battery in this order, the tab is connected to the first battery and the third battery without being connected to the second battery.

A power disconnection device for manually disconnecting power of a battery pack, the device including a housing, first and second interlock terminals provided in the housing and connectable to an interlock circuit of the battery pack, first and second high voltage terminals connectable to a high voltage line of the battery pack, a switch lever disposed over inner and outer portions of the housing, a first switch module in contact with the first and second interlock terminals, and upon an off operation of the switch lever, configured to be separated from any one of the first and second interlock terminals, and a second switch module configured to interlock with the first switch module, the second switch module being in contact with the first and second high voltage terminals, separated from any one of the first and second interlock terminals, and then separated from the first and second high voltage terminals.

A power disconnection device for manually disconnecting power of a battery pack, the device including a housing, first and second interlock terminals provided in the housing and connectable to an interlock circuit of the battery pack, first and second high voltage terminals connectable to a high voltage line of the battery pack, a switch lever disposed over inner and outer portions of the housing, a first switch module in contact with the first and second interlock terminals, and upon an off operation of the switch lever, configured to be separated from any one of the first and second interlock terminals, and a second switch module configured to interlock with the first switch module, the second switch module being in contact with the first and second high voltage terminals, separated from any one of the first and second interlock terminals, and then separated from the first and second high voltage terminals.

The present disclosure relates to a battery module comprising: a plurality of battery cells each including an electrode tab; and a bus bar connected to the electrode tab to electrically connect the plurality of battery cells to each other. The bus bar includes a plate having a plurality of holes. The electrode tab of each of the battery cells is inserted into at least a part of the plurality of holes of the plate. The electrode tab inserted into the hole and the plate are coupled to each other by a welding bead, and the welding bead has a width and a height defined by Equations 1 and 2, respectively.

A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.

A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.

The present disclosure provides a battery module, including a first battery cell arrangement structure, a second battery cell arrangement structure and a bus bar array. With battery cells stacked in a horizontal direction, a first battery cell arrangement structure and a second battery cell arrangement structure are stacked in a vertical direction, and a first bus bar of a bus bar array is used to sequentially connect the battery cells of the first battery cell arrangement structure and the second battery cell arrangement structure. As a result, a total positive electrode and a total negative electrode of a battery module are located at two ends of the battery module, which greatly reduces the possibility of a short circuit of the battery module and improves the safety of the battery module.

An electric wire routing groove portion in which an electric wire is hosed includes a bottom portion; a pair of side wall portions that are erected from the bottom portion and are provided facing each other; and locking pieces that protrude from the side wall portions in directions in which the locking pieces approach each other and are formed with a gap through which the electric wire is passed between distal ends of the locking pieces. The side wall portion includes low edge portions formed on both sides of the locking pieces and provided closer to the bottom portion than a position of the locking piece on a bottom portion side.

A package for a power storage device includes at least one laminated packaging material having first and second sections. The packaging material includes a metallic foil layer, a heat-resistant resin layer, and a heat-fusible resin layer. In a state in which the heat-fusible resin layers of the first and second sections are faced, peripheral edges thereof are heat-sealed to form a storage chamber for accommodating a device main body. One of the sections is extended outside the storage chamber to form a conductive flange having an exposed heat-fusible resin layer. The conductive flange is provided with an external conductive section in which the heat-fusible resin layer is partially removed to expose the metallic foil layer. The packaging material having the external conductive section is provided with an internal conductive section in the storage chamber in which the heat-fusible resin layer is partially removed to expose the metallic foil layer.