Abstract: A pressing jig for removing gas generated in an activation process of a battery cell includes a plate-shaped lower plate on which the battery cell that has undergone the activation process is placed and fixed, and an upper plate that presses the battery cell placed on the lower plate from above. At least one of the upper plate or the lower plate has a structure in which n (n?3) separated sub-plates are assembled to form a single plate, and the sub-plates independently press the battery cell. The pressing jig can suppress trapping of internal gas by sequentially pressing the battery cell.

Abstract: A secondary battery activation device capable of effectively removing gas generated inside a secondary battery cell during an activation process of a secondary battery and a secondary battery manufacturing method using the same are provided. The secondary battery activation device includes a first pressing unit comprising a first pressing plate and a plurality of first elastic pressing members located on a first surface of the first pressing plate, and a second pressing unit comprising a second pressing plate and a plurality of second elastic pressing members located on a second surface of the second pressing plate, the second surface of the second pressing plate being arranged to face the first surface of the first pressing plate.

Abstract: An activation method for a lithium secondary battery having an electrode lead includes: a pre-aging process aging the lithium secondary battery at room temperature; a formation process charging the lithium secondary battery; and a roll-pressing process of pressurizing the lithium secondary battery using a pressure roller. The roll-pressing process includes pressing from a center of the lithium secondary battery toward an end of the lithium secondary battery where the electrode lead is located.

Abstract: An electrode includes a unit body stack part formed by stacking at least one basic unit having a four-layer structure in which a first electrode, a first separator, a second electrode and a second separator are sequentially stacked. Each surface of the first separator and the second separator is coated with a coating material having adhesiveness, and the basic unit adheres to an adjacent radial unit in the unit body stack part. The electrode assembly of allows a heating and pressing process to be performed prior to a primary formation process so that a separator of one basic unit and a first electrode of the other basic unit to be adhered and fixed by a coating material coated on the separator, and thus a bending phenomenon caused by a difference in electrode expansion rates in a charging/discharging process is prevented.

Abstract: A device for charging and discharging a battery cell capable of suppressing a swelling phenomenon of a terrace portion of a battery cell during a formation process of the battery cell includes first and second plates configured to receive a battery cell therebetween and to press two surfaces of the battery cell; first and second grippers connected to the first and second plates, respectively, the first and second grippers protrude to face each other and configured to contact a lead region of the battery cell; and first and second pressing pads positioned inward of the first and second grippers, the first and second pressing pads being configured to contact a terrace region of the battery cell. A method of charging and discharging a battery cell using the same is also provided.

Abstract: The present invention relates to a method for manufacturing a secondary battery and an apparatus for manufacturing a secondary battery. The method for manufacturing the secondary battery according to the present invention comprises: an accommodation process of accommodating an electrode assembly, in which electrodes and separators are alternately stacked, an electrolyte, and one side portion of electrode leads connected to the electrodes, in a pouch to form a cell; an activation process of charging the cell to activate the cell; a pressing process of sequentially pressing the cell through pressing rolls after the activation process to press the cell; and a degassing process of discharging an internal gas of the cell to the outside after the pressing process.

Abstract: A device for charging and discharging a battery cell includes first and second plates spaced from each other, the first and second plates being configured to press respective first and second surfaces of a battery cell locatable therebetween, and first and second pressing blocks located on the first and second plates, respectively, the first and second pressing blocks protruding from the first and second plates to face each other. The first and second pressing blocks are locatable in a space between a body and a gas pocket of the battery cell. A method using the device is also provided.

Abstract: The present invention provides a gas removing device, which removes a gas generated inside a pouch, in which an electrode assembly is accommodated. The gas removing device includes a pair of vacuum tubes configured to press opposing surfaces of a pouch so as to form a vacuum surface on the pouch; a heating member provided on a pressing surface of each of the vacuum tubes, which presses the pouch, is configured to seal only a portion of an edge of the vacuum surface so as to form a sealed part and an unsealed part; a cutting member configured to cut the vacuum surface of the pouch and form a cutoff hole; and a gas discharging member configured to discharge a gas from inside the pouch to the outside through the unsealed part, the cutoff hole, and the vacuum tubes.

Abstract: A device for charging and discharging a battery cell capable of suppressing a swelling phenomenon of a terrace portion of a battery cell during a formation process of the battery cell includes first and second plates configured to receive a battery cell therebetween and to press two surfaces of the battery cell; first and second grippers connected to the first and second plates, respectively, the first and second grippers protrude to face each other and configured to contact a lead region of the battery cell; and first and second pressing pads positioned inward of the first and second grippers, the first and second pressing pads being configured to contact a terrace region of the battery cell. A method of charging and discharging a battery cell using the same is also provided.

Abstract: A temperature measurement device suitable for measuring the temperature of each secondary battery to consider a temperature deviation between secondary batteries that may occur during charging/discharging in the formation process and capacity test after the secondary battery assembly process, and a charge/discharge apparatus including the temperature measurement device are provided. The temperature measurement device is for measuring a temperature of at least one of a plurality of secondary batteries arranged along an X-axis direction, spaced apart from one another, in a standing position, and includes a non-contact temperature sensor unit which is insertable into a spacing between adjacent secondary batteries to measure the temperature of the secondary battery that the non-contact temperature sensor unit faces in a non-contact manner, and a Z-axis transfer device which inserts the non-contact temperature sensor unit into the spacing downward from above the secondary batteries in a Z-axis direction.

Abstract: A pressing jig for removing gas generated in an activation process of a battery cell includes a plate-shaped lower plate on which the battery cell that has undergone the activation process is placed and fixed, and an upper plate that presses the battery cell placed on the lower plate from above. At least one of the upper plate or the lower plate has a structure in which n (n?3) separated sub-plates are assembled to form a single plate, and the sub-plates independently press the battery cell. The pressing jig can suppress trapping of internal gas by sequentially pressing the battery cell.

Abstract: A charging and discharging apparatus including a temperature measuring device suitable for measuring a temperature of each secondary battery and a cooling fan for cooling secondary batteries by utilizing temperature information using the temperature measuring device, such that a temperature deviation between the secondary batteries, which may occur during charging and discharging in a formation process and a capacity test after a secondary battery assembly process, is provided. The charging and discharging apparatus includes a movable non-contact temperature measuring device and cooling fans of which directions of wind and outputs are individually adjusted based on temperature information measured by the temperature measuring device according to a location in each secondary battery.

Abstract: A formation jig includes a pressing plate configured to press a battery cell, the pressing plate having a first through hole; a pressing support plate configured to support the battery cell when the pressing plate presses an upper or lower portion of the battery cell, the pressing support plate having a second through hole and a third through hole; a first screw configured to pass through first through hole of the pressing plate and the second through hole of the pressing support plate and to move the pressing plate in a gap-adjusting direction by rotation thereof; and a second screw configured to pass through the third through hole of the pressing support plate and to move the pressing support plate in the gap-adjusting direction by rotation thereof. A diameter of the second through hole is larger than a diameter of the first through hole.

Abstract: A degassing apparatus for a secondary battery, and a degassing method using same, is provided. The degassing apparatus includes a drive motor and a jig arm configured to pressurize a first surface of a gas pocket of a battery cell and a second surface opposite the first surface by controlling a separation distance by the operation of a driving motor. The degassing apparatus is capable of performing an effective degassing and sealing process for the battery cell without positional movement of the battery cell during cell activation or after cell activation.

Abstract: A charging and discharging apparatus including a temperature measuring device suitable for measuring a temperature of each secondary battery and a cooling fan for cooling secondary batteries by utilizing temperature information using the temperature measuring device, such that a temperature deviation between the secondary batteries, which may occur during charging and discharging in a formation process and a capacity test after a secondary battery assembly process, is provided. The charging and discharging apparatus includes a movable non-contact temperature measuring device and cooling fans of which directions of wind and outputs are individually adjusted based on temperature information measured by the temperature measuring device according to a location in each secondary battery.

Abstract: An electrode includes a unit body stack part formed by stacking at least one basic unit having a four-layer structure in which a first electrode, a first separator, a second electrode and a second separator are sequentially stacked. Each surface of the first separator and the second separator is coated with a coating material having adhesiveness, and the basic unit adheres to an adjacent radial unit in the unit body stack part. The electrode assembly of allows a heating and pressing process to be performed prior to a primary formation process so that a separator of one basic unit and a first electrode of the other basic unit to be adhered and fixed by a coating material coated on the separator, and thus a bending phenomenon caused by a difference in electrode expansion rates in a charging/discharging process is prevented.

Abstract: A battery cell degassing apparatus for degassing a battery cell having a gas pocket, which includes a chamber cover to which the battery cell is detachably mounted, a vacuum chamber coupled to the chamber cover and configured to accommodate the battery cell in a vacuum environment, the chamber cover being slidable in a horizontal direction with respect to the vacuum chamber, a piercing unit provided at the vacuum chamber to pierce a part of the gas pocket, and a pressing unit provided at the vacuum chamber to be spaced apart from the piercing unit and configured to flatten an upper surface and a lower surface of the battery cell and to discharge a gas inside the battery cell to the outside of the battery cell is provided.

Abstract: A temperature measurement device suitable for measuring the temperature of each secondary battery to consider a temperature deviation between secondary batteries that may occur during charging/discharging in the formation process and capacity test after the secondary battery assembly process, and a charge/discharge apparatus including the temperature measurement device are provided. The temperature measurement device is for measuring a temperature of at least one of a plurality of secondary batteries arranged along an X-axis direction, spaced apart from one another, in a standing position, and includes a non-contact temperature sensor unit which is insertable into a spacing between adjacent secondary batteries to measure the temperature of the secondary battery that the non-contact temperature sensor unit faces in a non-contact manner, and a Z-axis transfer device which inserts the non-contact temperature sensor unit into the spacing downward from above the secondary batteries in a Z-axis direction.

Abstract: A method for injecting an electrolyte of a pouch type battery is provided. The method includes pressing the pouch type battery that has a gas pocket on a first side thereof to move gas generated from the battery toward the gas pocket. The gas pocket is then pierced using a needle type injector and an electrolyte is injected through the pierced portion. The electrolyte injected into the gas pocket is moved toward a second side of the battery and the gas pocket is pierced to remove the gas under a vacuum and seal the battery.

Abstract: A battery cell degassing apparatus for degassing a battery cell having a gas pocket, which includes a chamber cover to which the battery cell is detachably mounted, a vacuum chamber coupled to the chamber cover and configured to accommodate the battery cell in a vacuum environment, the chamber cover being slidable in a vertical direction with respect to the vacuum chamber, a piercing unit provided at the vacuum chamber to pierce a part of the gas pocket, and a pressing unit provided at the vacuum chamber to be spaced apart from the piercing unit and configured to flatten a left surface and a right surface of the battery cell and to discharge a gas inside the battery cell to the outside of the battery cell is provided.