Abstract: A battery pack includes a plurality of cell module assemblies having at least one battery cell, and a control module electrically connected to the plurality of cell module assemblies to manage the plurality of cell module assemblies as at least two groups.

Abstract: A battery pack includes a first battery module having a first corner formed by two side plates; a processing unit having a second corner formed by two side plates, electrically connected to the first battery module and controlling charge/discharge of the battery module; and a first coupling member having one side fastened to the first corner and the other side fastened to the second corner.

Abstract: A battery pack includes a battery module having at least one battery cell, a pack case configured to accommodate the battery module, and a connection guide unit provided on at least one side of the pack case and configured to be accessible to electrical members of two or more connection types.

Abstract: The battery pack includes a battery module; a processing unit which is electrically connected to the battery module and configured to control charge/discharge of the battery module, wherein at least one of the battery module or the processing unit is configured to allow another battery module or another processing unit to be coupled to two or more sides thereof.

Abstract: An embodiment of the present invention relates to a cylindrical secondary battery in which a positive electrode terminal is adhered and fixed to a cylindrical can by an insulating sheet, and thus sealing between the cylindrical can and the positive electrode terminal can be facilitated due to an increased contact area.

Abstract: An internal pressure measuring jig for a cylindrical battery cell, of the present invention, comprises: a lower jig which has a form corresponding to a cylindrical battery cell, and has a temperature measuring part and a receiving groove in which the cylindrical battery cell is separably inserted; and an upper jig which discharges gas inside the cylindrical battery cell, has a pressure measuring part for measuring the pressure of the discharged gas, and is separably coupled to the lower jig so as to close off an opening part of the receiving groove.

Abstract: An internal pressure measuring jig for a cylindrical battery cell, of the present invention, comprises: a lower jig which has a form corresponding to a cylindrical battery cell, and has a temperature measuring part and a receiving groove in which the cylindrical battery cell is separably inserted; and an upper jig which discharges gas inside the cylindrical battery cell, has a pressure measuring part for measuring the pressure of the discharged gas, and is separably coupled to the lower jig so as to close off an opening part of the receiving groove.

Abstract: A shelf unit for use in a rack for communication equipment comprising: a front body including a pair of side panels for containing PCBs; a back board detachably mounted to the rear ends of the side panels of the front body; and a rear body including a pair of side panels for containing PCBs. Connecting members are mounted adjacent to the rear ends of the side panels of the front body and protrude outward therefrom. A pair of connecting plates extends forward from the front ends of the respective side panels of the rear body. L-shaped slots are provided at the connecting plates, into which the respective connecting members are fitted.