Abstract: A battery cell includes an electrode assembly containing a plurality of electrode plates stacked with a separator interposed therebetween; and a battery case in which the electrode assembly is mounted onto a receiving part, wherein the electrode assembly includes a plurality of electrode tabs that are respectively formed to extend from the plurality of electrode plates, wherein the plurality of electrode tabs are mutually arranged on the same line with the same polarity to form an electrode tab arrangement body, and wherein one or more protection members are joined to the ends of the plurality of electrode tabs.

Abstract: The present invention relates to an electrode assembly having a short circuit prevention coating portion, and more particularly an electrode assembly including a positive electrode sheet having a positive electrode tab protruding from one side thereof and a positive electrode mixture layer applied to a lower part of the positive electrode tab and to a current collector, a negative electrode sheet having a negative electrode tab protruding from one side thereof and a negative electrode mixture layer applied to a lower part of the negative electrode tab and to a current collector, and a separator located between the positive electrode sheet and the negative electrode sheet, wherein the negative electrode sheet has a shoulder portion extending in a horizontal direction by a predetermined length, the negative electrode active material being applied to the shoulder portion, and the shoulder portion is wrapped with a coating portion.

Abstract: A secondary battery according to an exemplary embodiment of the present invention includes: an electrode assembly; and a pouch case in which the electrode assembly is embedded, in which the pouch case includes a first case part formed with a first accommodating part in which a part of the electrode assembly is embedded, and a second case part formed with a second accommodating part in which the remaining part of the electrode assembly is accommodated, the first case part and the second case part are in contact with each other in an edge portion surrounding the first and second accommodating parts and are sealed by a sealing part formed in a band shape on at least a part of the edge portion, the sealing part includes a first sealing part having a first width and a second sealing part having a second width smaller than the first width, and a central portion of the second sealing part in a longitudinal direction coincides with a central portion of a long side of the electrode assembly.

Abstract: A secondary battery comprises an electrode assembly comprising radical units in which first and second electrodes are alternately laminated with a separator therebetween and a separation film surrounding the radical units to be repeatedly laminated, wherein the electrode assembly comprises a protection unit laminated on an outermost separation film disposed on the uppermost end or lowermost end of the separation film, the protection unit has a structure comprising a second protection electrode, a separator, and a first protection electrode which are successively laminated from the outermost separation film disposed on the uppermost end or lowermost end of the electrode assembly, the second protection electrode has a cross-sectional coating structure comprising a second collector and a second electrode active material portion coated with a second electrode active material on an inner surface of the second collector, and the inner surface is a surface facing a center of the electrode assembly.

Abstract: The present invention relates to an electrode assembly having an external shape fixation frame, and more particularly an electrode assembly including a unit cell including one or more electrodes and one or more separators, wherein the electrode assembly is at least one selected from among a stacked type electrode assembly, a stacked and folded type electrode assembly, and a wound type electrode assembly, and the electrode assembly includes an external shape fixation frame configured to wrap a portion of an outer surface of the electrode assembly, and a lithium secondary battery including the same.

Abstract: The present invention relates to an electrode manufacturing method for manufacturing a foldable battery cell, the electrode manufacturing method including a coating step of forming an electrode mixture coated portion on an electrode sheet so as to include an uncoated portion having no electrode mixture formed thereon by coating, a step of slitting the electrode sheet into a plurality of unit electrode sheets, and a step of notching the slit electrode sheet, wherein the uncoated portion includes an electrode tab formation portion and a folding portion formed so as to be parallel to a direction in which the electrode sheet is taken out.

Abstract: The present invention relates to a pouch-shaped battery cell having an electrode assembly in a pouch-shaped battery case, the electrode assembly including positive electrodes and negative electrodes, each of the positive electrodes and the negative electrodes having a structure in which the length of the electrode in a width direction is less than the length of the electrode in a length direction, each of the positive electrodes and the negative electrodes has an uncoated portion extending parallel to outer peripheries of the electrode in the overall width direction or outer peripheries of the electrode in the overall length direction and a coated portion, which is coated with an electrode mixture, formed at the remaining portion of the electrode excluding the uncoated portion, and a stepped structure is formed at the part of the pouch-shaped battery case corresponding to the uncoated portion so as to be recessed inwards.

Abstract: A battery cell tray includes a tray body having a storage space therein, and first and second plates arranged in the storage space of the tray body, the first and second plates being configured to support opposite surfaces of at least one battery cell to allow the battery cell to be mounted in an erect state, the first and second plates being movable in a horizontal direction in the storage space, and each of the first and second plates having a heating member therein. A method of activating a battery cell using the battery cell tray is also provided.

Abstract: The present invention relates to an electrode manufacturing method for manufacturing a foldable battery cell, the electrode manufacturing method including a coating step of forming an electrode mixture coated portion on an electrode sheet so as to include an uncoated portion having no electrode mixture formed thereon by coating, a step of slitting the electrode sheet into a plurality of unit electrode sheets, and a step of notching the slit electrode sheet, wherein the uncoated portion includes a first uncoated portion formed so as to be parallel to a direction in which the electrode sheet is taken out and a second uncoated portion formed so as to be perpendicular to the direction in which the electrode sheet is taken out.

Abstract: A secondary battery comprises an electrode assembly comprising radical units in which first and second electrodes are alternately laminated with a separator therebetween and a separation film surrounding the radical units to be repeatedly laminated, wherein the electrode assembly comprises a protection unit laminated on an outermost separation film disposed on the uppermost end or lowermost end of the separation film, the protection unit has a structure comprising a second protection electrode, a separator, and a first protection electrode which are successively laminated from the outermost separation film disposed on the uppermost end or lowermost end of the electrode assembly, the second protection electrode has a cross-sectional coating structure comprising a second collector and a second electrode active material portion coated with a second electrode active material on an inner surface of the second collector, and the inner surface is a surface facing a center of the electrode assembly.

Abstract: A secondary battery comprises an electrode assembly comprising radical units in which first and second electrodes are alternately laminated with a separator therebetween and a separation film surrounding the radical units to be repeatedly laminated, wherein the electrode assembly comprises a protection unit laminated on an outermost separation film disposed on the uppermost end or lowermost end of the separation film, the protection unit has a structure comprising a second protection electrode, a separator, and a first protection electrode which are successively laminated from the outermost separation film disposed on the uppermost end or lowermost end of the electrode assembly, the second protection electrode has a cross-sectional coating structure comprising a second collector and a second electrode active material portion coated with a second electrode active material on an inner surface of the second collector, and the inner surface is a surface facing a center of the electrode assembly.

Abstract: The electrode assembly comprises a first electrode unit in which an electrode and a separator are alternately stacked and a second electrode unit in which an electrode and a separator are alternately stacked, the second electrode unit having a size less than that of the first electrode unit and being stacked on the first electrode unit, wherein a tab bonding body manufactured by connecting an electrode tab provided in the first electrode unit to an electrode tab provided in the second electrode unit is disposed within a range of a width of the second electrode unit, and a leading electrode tab to which an electrode lead is connected is disposed on a portion of the first electrode unit.

Abstract: Disclosed herein is a battery cell configured such that an electrode assembly, including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, is mounted in a receiving part formed in a battery case, a positive electrode terminal and a negative electrode terminal protrude from at least one side of the electrode assembly, and an insulative material is provided between the electrode assembly and the battery case.

Abstract: A secondary battery comprises an electrode assembly comprising radical units in which first and second electrodes are alternately laminated with a separator therebetween and a separation film surrounding the radical units to be repeatedly laminated, wherein the electrode assembly comprises a protection unit laminated on an outermost separation film disposed on the uppermost end or lowermost end of the separation film, the protection unit has a structure comprising a second protection electrode, a separator, and a first protection electrode which are successively laminated from the outermost separation film disposed on the uppermost end or lowermost end of the electrode assembly, the second protection electrode has a cross-sectional coating structure comprising a second collector and a second electrode active material portion coated with a second electrode active material on an inner surface of the second collector, and the inner surface is a surface facing a center of the electrode assembly.

Abstract: The electrode assembly comprises a first electrode unit in which an electrode and a separator are alternately stacked and a second electrode unit in which an electrode and a separator are alternately stacked, the second electrode unit having a size less than that of the first electrode unit and being stacked on the first electrode unit, wherein a tab bonding body manufactured by connecting an electrode tab provided in the first electrode unit to an electrode tab provided in the second electrode unit is disposed within a range of a width of the second electrode unit, and a leading electrode tab to which an electrode lead is connected is disposed on a portion of the first electrode unit.

Abstract: Disclosed herein is a battery pack including secondary batteries which can be charged and discharged. The battery pack is configured such that secondary batteries having different sizes are stacked to form a stair-like structure having a width and a height.

Abstract: Disclosed herein is a battery cell configured such that an electrode assembly, including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, is mounted in a receiving part formed in a battery case, a positive electrode terminal and a negative electrode terminal protrude from at least one side of the electrode assembly, and an insulative material is provided between the electrode assembly and the battery case.

Abstract: Disclosed herein is a battery pack including secondary batteries which can be charged and discharged. The battery pack is configured such that secondary batteries having different sizes are stacked to form a stair-like structure having a width and a height.

Abstract: Disclosed herein is a battery pack including secondary batteries which can be charged and discharged. The battery pack is configured such that secondary batteries having different sizes are stacked to form a stair-like structure having a width and a height.