Abstract: Disclosed herein are a pouch type secondary battery and a method for manufacturing the same. A pouch type secondary battery may include an electrode assembly having a first width and a pouch type exterior in which a recess part configured to accommodate the electrode assembly is formed. The recess part may include a main recess part and a sub recess part. The main recess part may have a space defining a second width that is equal to or greater than the first width. The sub recess part may communicate with the main recess part and define a space having a third width less than the first width.

Abstract: An electrode includes an active material coating portion coated with an electrode active material on at least one surface of an electrode collector; and an active material non-coating portion which is at one side of the active material coating portion, is not coated with the electrode active material, and includes at least one slit extending from one end to another end thereof, wherein in each slit of the at least one slit, a hole passes through a point at which the respective slit and the active material coating portion meet each other.

Abstract: The present invention relates to a battery cell that can include an electrode assembly configured with two or more unit stacks connected to each other in series or in parallel, a battery case configured to receive the electrode assembly therein, and an insulative protection member configured to protect an electrode tab portion of the unit stacks. The overall length of the battery case can be three or more times the overall width of the battery case. A positive electrode lead and a negative electrode lead can extend outwards from the battery case protruding in opposite directions. A plurality of unit stacks can be used to implement a long battery cell, and a connection portion at which the plurality of unit stacks are connected is reinforced to improve safety of the battery cell.

Abstract: An easy-to-disassemble battery pack is configured to have a structure in which an insulating film is added between a thermal resin and a heat sink such that a lower part of the battery pack is separable from a battery cell while the lower part of the battery pack is fixed in tight contact with the battery cell for heat transfer.

Abstract: A method for assembling a secondary battery cell module by using an assembling jig including a plurality of guide rods disposed on a jig plate includes: mounting a lower frame on the jig plate while the guide rods are inserted into a plurality of arranging through-holes of the lower frame; disposing a plurality of battery cells on the lower frame; mounting an upper frame on the battery cells while the guide rods are inserted into a plurality of arranging through-holes of the upper frame; fastening the upper frame and the lower frame together; and separating the assembling jig from the upper frame and the lower frame.

Abstract: The present invention relates to a battery cell including an electrode assembly including a plurality of electrode plates and at least one separator interposed between the plurality of electrode plates, a case configured to receive the electrode assembly, electrode tabs formed at the electrode plates so as to protrude and extend therefrom, and an electrode lead joined to the electrode tabs while being electrically connected to the outside, wherein each of the electrode tabs includes a first tab portion connected to a corresponding one of the electrode plates and a second tab portion extending from the first tab portion, the electrode lead being joined to the second tab portion, and the first tab portion is provided with a stress relief portion configured to reduce stress in the electrode tab.

Abstract: A battery pack includes a battery cell and a bus bar electrically connected to the battery cell, wherein the bus bar includes a rupture portion configured to melt due to electric resistance heat generated by overcurrent and thus to rupture, the rupture portion having a plurality of through-holes therein.

Abstract: Disclosed herein are a pouch type secondary battery and a method for manufacturing the same. A pouch type secondary battery may include an electrode assembly having a first width and a pouch type exterior in which a recess part configured to accommodate the electrode assembly is formed. The recess part may include a main recess part and a sub recess part. The main recess part may have a space defining a second width that is equal to or greater than the first width. The sub recess part may communicate with the main recess part and define a space having a third width less than the first width.

Abstract: A pouch-type secondary battery includes an electrode assembly having a structure in which electrodes and separators are alternately disposed; and a pouch-type exterior configured to accommodate the electrode assembly, wherein the exterior includes an accommodation part defining a space accommodating the electrode assembly; and a sealing part disposed along a circumference of the accommodation part in which some areas of the exterior are attached to each other so that the accommodation part is sealed from an outside, wherein a plurality of corners are disposed on the sealing part, at least one corner of the plurality of corners includes a recess part recessed toward the electrode assembly; and a diagonal part disposed adjacent to the recess part and extending toward the recess part in a diagonal direction crossing a longitudinal direction of the exterior.

Abstract: An electrode includes an active material coating portion coated with an electrode active material on at least one surface of an electrode collector; and an active material non-coating portion which is at one side of the active material coating portion, is not coated with the electrode active material, and includes at least one slit extending from one end to the another end thereof, wherein in each slit of the at least one slit, a hole is passes through a point at which the respective slit and the active material coating portion meet each other.

Abstract: The present invention relates to a battery cell that can include an electrode assembly configured with two or more unit stacks connected to each other in series or in parallel, a battery case configured to receive the electrode assembly therein, and an insulative protection member configured to protect an electrode tab portion of the unit stacks. The overall length of the battery case can be three or more times the overall width of the battery case. A positive electrode lead and a negative electrode lead can extend outwards from the battery case protruding in opposite directions. A plurality of unit stacks can be used to implement a long battery cell, and a connection portion at which the plurality of unit stacks are connected is reinforced to improve safety of the battery cell.

Abstract: A method for assembling a secondary battery cell module by using an assembling jig including a plurality of guide rods disposed on a jig plate includes: mounting a lower frame on the jig plate while the guide rods are inserted into a plurality of arranging through-holes of the lower frame; disposing a plurality of battery cells on the lower frame; mounting an upper frame on the battery cells while the guide rods are inserted into a plurality of arranging through-holes of the upper frame; fastening the upper frame and the lower frame together; and separating the assembling jig from the upper frame and the lower frame.

Abstract: A method for assembling a secondary battery cell module by using an assembling jig including a plurality of guide rods disposed on a jig plate includes: mounting a lower frame on the jig plate while the guide rods are inserted into a plurality of arranging through-holes of the lower frame; disposing a plurality of battery cells on the lower frame; mounting an upper frame on the battery cells while the guide rods are inserted into a plurality of arranging through-holes of the upper frame; fastening the upper frame and the lower frame together; and separating the assembling jig from the upper frame and the lower frame.

Abstract: A battery pack includes a battery cell and a bus bar electrically connected to the battery cell, wherein the bus bar includes a rupture portion configured to melt due to electric resistance heat generated by overcurrent and thus to rupture, the rupture portion having a plurality of through-holes therein.

Abstract: A method for assembling a secondary battery cell module by using an assembling jig including a plurality of guide rods disposed on a jig plate includes: mounting a lower frame on the jig plate while the guide rods are inserted into a plurality of arranging through-holes of the lower frame; disposing a plurality of battery cells on the lower frame; mounting an upper frame on the battery cells while the guide rods are inserted into a plurality of arranging through-holes of the upper frame; fastening the upper frame and the lower frame together; and separating the assembling jig from the upper frame and the lower frame.

Abstract: Disclosed herein is a battery module configured in a structure in which a plurality of battery cells or unit modules (‘unit cells’) are stacked, and a heat sink is mounted to electrical connection regions between the unit cells and/or to outsides of battery module connection members connected to the electrical connection regions.

Abstract: Disclosed herein is a voltage sensing assembly including sensing bus bars connected to series connection portions of battery cells for sensing the voltage of the battery cells, a printed circuit board (PCB), to the upper part of which the sensing bus bars are and to the lower part of which a connector is coupled, the connector mounted on the PCB, an insulative mounting member including a receiving part having a shape corresponding to the shape of the PCB such that the PCB is mounted in the receiving part, the receiving part being provided at one side thereof with openings, through which the sensing bus bars extend, and an insulation sheet attached to the front surface of the PCB.

Abstract: Disclosed is a battery pack including a battery module array constituted by one or more battery modules each including one or more unit modules each configured to have a structure in which a battery cell is surrounded by a cell cover are mounted in a module case in a state in which the unit modules are stacked while being vertically upright, a base plate on which the battery module array is loaded, a pair of end plates to support opposite sides of the array in a state in which a lower end of each of the end plates is fixed to the base plate, and an insulation member disposed between the array and each of the end plates, the insulation member being provided at a surface thereof facing the array with one or more ribs to absorb shock caused by external force and to define a coolant flow channel.

Abstract: Disclosed herein is a module housing of a unit module including battery cells, the module housing including a first cover member and a second cover member coupled to each other for covering entire outer surfaces of the battery cells, mounting grooves formed at an inside end of at least one of the first and second cover members such that the battery cells are mounted in the respective mounting grooves, and an injection port formed at the module housing such that a thermoplastic resin is injected to interfaces between the mounting grooves and the battery cells through the injection port in a state in which the battery cells are mounted in the module housing.

Abstract: A battery module including two or more stacked battery cells which can be charged and discharged and at least one cooling plate comprising a thermal conduction portion and at least one heat dissipation portion connected to said thermal conduction portion, the thermal conduction portion being disposed between one or more adjacent battery cells, and the at least one heat dissipation portion extending beyond the adjacent battery cells and including one or more bend is provided.