Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. An intermediate one of the separator portions may be adhered to an intermediate one of the electrodes such that it would take a peel force in a range from 5 gf to 35 gf per 20 mm width applied to an edge of the intermediate separator portion in order to peel it away from the intermediate electrode at a speed of 100 mm/min along the stacking axis. Moreover, top and bottom ones of the separator portions may each have a value of air permeability from 70 sec/100 ml to sec/100 ml per square inch of the respective separator portion at a pressure of 0.05 MPa and at room temperature.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. The plurality of electrodes include a top electrode positioned at a top of the stack along the stacking axis, and the plurality of electrodes include a bottom electrode positioned at a bottom of the stack. The separator portions in the stack include a top separator portion abutting the top electrode and a bottom separator portion abutting the bottom electrode. The top separator portion and the bottom separator portion each have a value of air permeability from 80 sec/100 ml to 120 sec/100 ml per square inch of the respective separator portion at a pressure of 0.05 MPa and at room temperature.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. The plurality of electrodes include a top electrode positioned at a top of the stack along the stacking axis, and the plurality of electrodes include a bottom electrode positioned at a bottom of the stack. The separator portions in the stack include a top separator portion abutting the top electrode and a bottom separator portion abutting the bottom electrode. The bottom electrode may have a thickness along the stacking axis that is from 80% to 120% of a thickness of the top electrode along the stacking axis. Moreover, a maximum thickness of each of the electrodes in the stack may be less than 8.3 mm.

Abstract: An electrode assembly manufacturing method includes the steps of: assembling an electrode stack; performing a primary heat press operation on the electrode stack; then performing a pre-heating operation on the electrode stack; and then performing a secondary heat press operation on the electrode stack. The pre-heating operation may include applying heat and pressure to the electrode stack for a time period from 10 seconds to 40 seconds under a pressure condition from 0.5 MPa to 2 MPa and under a temperature condition from 50° C. to 85° C. The pressure condition applied in the pre-heating operation may include applying a lower pressure than that applied in the primary and secondary heat press operations. The primary heat press operation may include engaging the electrode stack with a gripper to secure a position of the electrode stack, which gripper may be disengaged from the electrode stack before performing the pre-heating operation.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. The plurality of electrodes include a top electrode positioned at a top of the stack along the stacking axis, and the plurality of electrodes include a bottom electrode positioned at a bottom of the stack. The separator portions in the stack include a top separator portion abutting the top electrode and a bottom separator portion abutting the bottom electrode. The bottom electrode may have a thickness along the stacking axis that is from 80% to 120% of a thickness of the top electrode along the stacking axis. Moreover, a maximum thickness of each of the electrodes in the stack may be less than 8.3 mm.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. The plurality of electrodes include a top electrode positioned at a top of the stack along the stacking axis, and the plurality of electrodes include a bottom electrode positioned at a bottom of the stack. The separator portions in the stack include a top separator portion abutting the top electrode and a bottom separator portion abutting the bottom electrode. The bottom electrode may have a thickness along the stacking axis that is from 80% to 120% of a thickness of the top electrode along the stacking axis. Moreover, a maximum thickness of each of the electrodes in the stack may be less than 8.3 mm.

Abstract: An electrode assembly manufacturing method includes the steps of: assembling an electrode stack; performing a primary heat press operation on the electrode stack while engaging the electrode stack with a gripper; and then performing a secondary heat press operation on the electrode stack while the gripper is disengaged from the electrode stack. The secondary heat press operation may include applying heat and pressure to the electrode stack for a time period from 5 seconds to 60 seconds under a temperature condition from 50° C. to 90° C. and under a pressure condition from 1 Mpa to 6 Mpa. The step of assembling the electrode stack may include alternately stacking first and second electrodes on an elongated separator sheet, and sequentially folding the separator sheet over a previously-stacked one of the electrodes before a subsequent electrode is stacked. An apparatus for performing the manufacturing method is also disclosed.

Abstract: An electrode assembly manufacturing method includes the steps of: assembling an electrode stack; performing a primary heat press operation on the electrode stack while engaging the electrode stack with a gripper; and then performing a secondary heat press operation on the electrode stack while the gripper is disengaged from the electrode stack. The secondary heat press operation may include applying heat and pressure to the electrode stack for a time period from 5 seconds to 60 seconds under a temperature condition from 50° C. to 90° C. and under a pressure condition from 1 Mpa to 6 Mpa. The step of assembling the electrode stack may include alternately stacking first and second electrodes on an elongated separator sheet, and sequentially folding the separator sheet over a previously-stacked one of the electrodes before a subsequent electrode is stacked. An apparatus for performing the manufacturing method is also disclosed.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. An intermediate one of the separator portions may be adhered to an intermediate one of the electrodes such that it would take a peel force in a range from 5 gf to 35 gf per 20 mm width applied to an edge of the intermediate separator portion in order to peel it away from the intermediate electrode at a speed of 100 mm/min along the stacking axis. Moreover, top and bottom ones of the separator portions may each have a value of air permeability from 70 sec/100 ml to sec/100 ml per square inch of the respective separator portion at a pressure of 0.05 MPa and at room temperature.

Abstract: An electrode assembly manufacturing method includes the steps of: assembling an electrode stack; performing a primary heat press operation on the electrode stack; then performing a pre-heating operation on the electrode stack; and then performing a secondary heat press operation on the electrode stack. The pre-heating operation may include applying heat and pressure to the electrode stack for a time period from 10 seconds to 40 seconds under a pressure condition from 0.5 MPa to 2 MPa and under a temperature condition from 50° C. to 85° C. The pressure condition applied in the pre-heating operation may include applying a lower pressure than that applied in the primary and secondary heat press operations. The primary heat press operation may include engaging the electrode stack with a gripper to secure a position of the electrode stack, which gripper may be disengaged from the electrode stack before performing the pre-heating operation.

Abstract: An electrode assembly manufacturing method includes the steps of: assembling an electrode stack; performing a primary heat press operation on the electrode stack while engaging the electrode stack with a gripper; and then performing a secondary heat press operation on the electrode stack while the gripper is disengaged from the electrode stack. The secondary heat press operation may include applying heat and pressure to the electrode stack for a time period from 5 seconds to 60 seconds under a temperature condition from 50° C. to 90° C. and under a pressure condition from 1 Mpa to 6 Mpa. The step of assembling the electrode stack may include alternately stacking first and second electrodes on an elongated separator sheet, and sequentially folding the separator sheet over a previously-stacked one of the electrodes before a subsequent electrode is stacked. An apparatus for performing the manufacturing method is also disclosed.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. The plurality of electrodes include a top electrode positioned at a top of the stack along the stacking axis, and the plurality of electrodes include a bottom electrode positioned at a bottom of the stack. The separator portions in the stack include a top separator portion abutting the top electrode and a bottom separator portion abutting the bottom electrode. The bottom electrode may have a thickness along the stacking axis that is from 80% to 120% of a thickness of the top electrode along the stacking axis. Moreover, a maximum thickness of each of the electrodes in the stack may be less than 8.3 mm.

Abstract: An electrode assembly manufacturing apparatus for fabricating a stack includes a stack table, gripper, and first press unit. The stack includes a first electrode, a second electrode, and a section of a separator between the first and the second electrodes. The stack table is configured for supporting the stack. The gripper is configured for fixing the stack. The first press unit is configured for heating and compressing the stack fixed by the gripper.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. The plurality of electrodes include a top electrode positioned at a top of the stack along the stacking axis, and the plurality of electrodes include a bottom electrode positioned at a bottom of the stack. The separator portions in the stack include a top separator portion abutting the top electrode and a bottom separator portion abutting the bottom electrode. The top separator portion and the bottom separator portion each have a value of air permeability from 80 sec/100 ml to 120 sec/100 ml per square inch of the respective separator portion at a pressure of 0.05 MPa and at room temperature.

Abstract: Disclosed herein is a pouch-shaped battery cell configured to have a structure in which an electrode assembly is received in a pouch-shaped battery case together with an electrolytic solution, wherein the pouch-shaped battery case is made of a laminate sheet including a metal layer and a resin layer, an upper edge of the pouch-shaped battery case, from which electrode terminals protrude outward, and opposite side edges of the pouch-shaped battery case, which are adjacent to the upper edge of the pouch-shaped battery case, are thermally fused to constitute a sealed portion of the pouch-shaped battery case, the opposite side edges of the pouch-shaped battery case being bent perpendicularly from the upper edge of the pouch-shaped battery case toward an electrode assembly receiving unit for receiving the electrode assembly, and a protective film is attached so as to wrap the perpendicularly bent opposite side edges of the pouch-shaped battery case.

Abstract: The present invention relates to an electrode assembly in which a plurality of electrode units are stacked to improve product stability when manufactured and a method for manufacturing the same. In addition, the present invention is provided to include a plurality of electrode units on which electrode tabs are formed and a full length-side separator member folded in a direction in which the electrode tabs are formed and a direction opposite to the direction in which the electrode tabs are formed while stacking the plurality of electrode units to be separated from each other.

Abstract: Provided is a method of determining a hemostatic pressure in a tourniquet includes: driving a limb occlusion pressure (LOP) sensor, which measures a pulse signal of a subject, at a first brightness (S1); checking whether the LOP sensor and a main body are connected to each other (S2); providing a first hemostatic pressure from the main body to the tourniquet (S3); checking, on the basis of a result value of the LOP sensor, whether a pulse of the subject is detected (S4); and, when, on the basis of the result value of the LOP sensor, the pulse of the subject is determined as “not detected,” providing a hemostatic pressure, which is obtained by increasing the current hemostatic pressure by a safe hemostatic pressure, from the main body to the tourniquet (S7).

Abstract: The present disclosure provides a battery cell activation tray which is an activation tray configured to accommodate battery cells during an activation process of the battery cells and has a structure including a base plate having a plate-type structure in which a plurality of battery cells are located on an upper surface thereof and a supporting portion of a partition wall structure protruding at one end in an upper surface direction, a plurality of jigs located on the upper surface of the base plate and separated from each other at a predetermined interval, and one or more elastic members mounted on the jigs to adjust separation distances between the jigs by elasticity, at both of opposite outer peripheral portions.

Abstract: The present invention relates to an electrode assembly in which a plurality of electrode units are stacked to improve product stability when manufactured and a method for manufacturing the same. In addition, the present invention is provided to include a plurality of electrode units on which electrode tabs are formed and a full length-side separator member folded in a direction in which the electrode tabs are formed and a direction opposite to the direction in which the electrode tabs are formed while stacking the plurality of electrode units to be separated from each other.

Abstract: The present disclosure provides a battery cell clamping device to fix and clamp two or more battery cells in a process of clamping and baking the battery cells arranged in one direction, including fixing jigs interposed between the battery cells, a pressure applying part configured to clamp a cell arrangement by applying a pressure with the fixing jigs interposed, and a base having a structure supporting the cell arrangement in a direction against the pressure applied from the pressure applying part in a state in which the cell arrangement is disposed on an upper surface of the base, wherein each of the fixing jigs is formed with guide blocks to align the battery cell at a fixed position on the jig in such a manner that the guide block abuts at least two side surfaces of the battery cell which are extended with respect to each other.