Abstract: Disclosed herein is a gas release member and a secondary battery including same. The gas release member can include a sheet having gas permeability. The gas release member can have a hole in a peripheral region of the sheet. The secondary battery can include an electrode assembly and a case accommodating the electrode assembly. The secondary battery can include the gas release member adhered to an inner side of an opening of the secondary battery.

Abstract: Disclosed is a separator for an electrochemical device that includes a polymer substrate with small and uniform pores and an aqueous organic/inorganic composite porous coating layer and an adhesive coating layer and which is improved in compression resistance, and a method of making the separator and the electrochemical device including the separator. The separator with improved compression resistance is not easily deformed by well resisting pressure applied thereto during a lamination process in which an electrode and the separator are applied with heat and pressure so as to be bonded to each other. In addition, when pressure is applied, the coating layer serves as a buffer, thereby reducing the pressing force exerted on the porous substrate. Thus, deformation of the separator is inhibited.

Abstract: One embodiment of the present invention provides a unit cell manufacturing device comprising a vision part for measuring a measurement value comprising the position information of at least one of the central electrode, the upper separator, the lower separator, the upper electrode and the lower electrode in the unit cell; and a control part for calculating the position correction value of at least one of the central electrode, the upper separator, the lower separator, the upper electrode, and the lower electrode, based on the measurement value measured in the vision part, and correcting at least one of the position of the central electrode supplied to the laminate conveying part, the position of the upper electrode supplied to the laminate conveying part, the position of the lower electrode supplied to the laminate conveying part and the cutting position of the laminate cutting part, based on the calculated position correction value.

Abstract: A fire-resistant bus bar includes a bus bar conductor part; a sheath layer of a fire-resistant silicone, and a protective layer. The sheath layer covers portions of the bus bar conductor part excluding both ends and is ceramicized at high temperatures to support the bus bar conductor part. The protective layer covers the sheath layer, in which a metal sheet is included in the sheath layer to reinforce the structural rigidity of the sheath layer. A battery pack and method of manufacture are also provided.

Abstract: Discussed is a transfer device for a battery cell assembly. The transfer device may include a jig plate including an opening in a central area of the jig plate, first cross-beam fasteners on the jig plate and configured to be coupled to a first cross-beam of a battery cell assembly, second cross-beam fasteners configured to be coupled to a second cross-beam of the battery cell assembly, and first and second film fasteners on the jig plate and adjacent to the opening of the jig plate.

Abstract: A method of manufacturing a battery, particularly a secondary battery, includes: depositing an active material on a substrate, depositing an insulator material on the substrate such as to extend over a boundary between the active material and the substrate, determining an indicative wet thickness of the insulator material at a position on the substrate that is offset from the boundary by a characteristic measurement distance, and adapting the depositing of the insulator material as a function of the indicative wet thickness. The insulator material includes an insulator component and a liquid component. A battery manufacturing system and a battery are also provided.

Abstract: The present invention relates to a pouch folding device for a secondary battery and a secondary battery, and the pouch folding device for the secondary battery, which folds a pouch including a body, in which an electrode assembly is accommodated, and a sealing part disposed on an edge of the body, includes: a side folding part configured to side-fold the sealing part of the pouch toward the body; and a corner folding part comprising a corner folding roller configured to press a corner portion at the side-folded sealing part to fold a corner toward the body, wherein the corner folding roller comprises a flat surface and an inclined surface, and the inclined surface of the corner folding roller during the pressing is disposed closer to the body than the flat surface.

Abstract: A battery cell according to the present invention can include an electrode assembly including a positive electrode, a negative electrode, and a separating membrane disposed between the positive electrode and the negative electrode, a cell case for receiving the electrode assembly, and an electrode lead connected to the electrode assembly and protruding from one end of the cell case. The cell case can include a receiving portion to receiving the electrode assembly and a sealing portion formed on an edge of the cell case to sealing the electrode assembly, and a reinforcing member positioned on an external side of the cell case to overlap at least a portion of the sealing portion.

Abstract: A battery management apparatus includes a first relay configured to connect a first end of a battery pack to a first end of a load, a second relay configured to connect a second end of the battery pack to a second end of the load, a sensor configured to measure a voltage of the battery pack and a voltage of the load, and a controller configured to control operations of the first relay and the second relay and receive a measurement of the voltage of the battery pack or the voltage of the load based on the operations of the first relay and the second relay.

Abstract: An electrode assembly has a one or more first electrode plates, separators, and second electrode plates are stacked, wherein the first electrode plate include a first electrode tab portion, to which a first active material is not applied, on one side thereof in a width direction, and the first electrode tab portion extends further outward in the width direction from one side end portion of the electrode assembly in the width direction than the separator, and an insulating coating is formed on a slit surface of the second electrode plate, which is disposed adjacent to the first electrode tab portion with the separator interposed therebetween, at one side end portion of the electrode assembly. The insulating coating is formed after coating and slitting a second active material on the second electrode plate and before stacking the first electrode plate, the second electrode plate, and the separator.

Abstract: A method of manufacturing a battery module includes accommodating a battery cell stack in which a plurality of battery cells are stacked in a frame member, mounting a supporting jig on an upper surface of the frame member, and injecting a thermally conductive resin through an injection hole formed in a lower surface of the frame member. In the step of injecting the t thermally conductive resin, the supporting jig supports a component inside the frame member so that the component does not move toward the upper surface of the frame member.

Abstract: Disclosed is a battery management apparatus capable of effectively reducing the current consumption of a component for waking up a microcontroller unit. The battery management apparatus includes a wake-up unit, a first power supply path, a first regulator, a first switching element, a feedback module, and a microcontroller unit configured to convert a sleep mode to a wake-up mode by receiving a wake-up signal from the wake-up unit and connected to the feedback module to turn off the first switching element.

Abstract: Discussed is a method for manufacturing a battery module, the method including mounting a battery cell stack on a bottom part of a module frame, the module frame having an upper part that is opened, mounting an upper plate such that the upper plate covers the battery cell stack on the opened upper part of the module frame, coupling the upper plate and the module frame, and coupling end plates to opened opposite sides of the module frame, respectively. The battery cell stack is mounted on the bottom part of the module frame by using spreading jigs configured to spread opposite ends of side surface parts of the module frame while being moved along a direction that is perpendicular to the bottom part of the module frame by side surface pressing jigs.

Abstract: A plasma processing apparatus of a unit cell for a secondary battery includes a discharge roller configured to transport a separator of the unit cell for a secondary battery and allowing a metal member to be placed therein, and a plasma processing member configured to generate plasma through a mutual reaction with the metal member and irradiate the plasma to a surface of the separator, wherein a pattern portion having a certain stepped portion is formed on an outer surface of the discharge roller.

Abstract: A battery pack includes a lower pack housing including a bottom plate and a side wall frame surrounding edges of the bottom plate; an upper lid coupled to an upper surface of the side wall frame while covering the lower pack housing; and a pack gasket installed between the upper surface of the side wall frame and the upper lid, in which a first protruding part blocking the inside of the battery pack and the pack gasket is provided along the upper surface of the side wall frame.

Abstract: A battery pack including, in one example, a battery block including a cell array including a plurality of prismatic cells arranged in a row, a pair of side plates disposed on each of both sides of the cell array, and a pair of end plates disposed on each of front and rear surfaces of the cell array, wherein both ends of the end plates in the width direction are fixed to side brackets provided at both ends of the side plates in the longitudinal direction of the side plates, so that the cell array is constrained as a single block; and a pack case in which a plurality of the battery blocks are mounted, wherein the end plate includes an end bracket that is fixed to a mounting part provided in the pack case.

Abstract: An electrode assembly, a method for manufacturing an electrode assembly, and a secondary battery including the electrode assembly. At a core part of the electrode assembly, the flatness fraction of a flat region of an electrode is between 3% and 13.5%. The electrode assembly may have a circularity of the electrode of 89% or greater. The electrode assembly may have an angle formed between the longitudinal end portion of the electrode and the curvature maximum point of the electrode between 40° and 98°. The deformation of the end portion of the electrode located at the core part and an adjacent electrode is reduced to address separator damage and reduce core collapse, core impingement, and core cracking.

Abstract: A battery-pack-based battery swapping station may include an external power grid configured to supply power, at least one charger configured to charge a battery pack, a controller configured to perform control such that the power supplied from the external power grid is transmitted to the battery pack and the battery pack is charged with the power, a main power source configured to supply power to the controller, a first bidirectional direct-current to direct-current (DC/DC) converter, the first DC/DC converter being configured to supply direct-current power to the battery pack, a second DC/DC converter, and an alternating-current to direct-current (AC/DC) converter connected to the external power grid, the AC/DC converter being configured to convert current. In addition, the controller may include a main control unit (MCU) is located between the AC/DC converter and the first DC/DC converter, the MCU being configured to generate a control signal.

Abstract: The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.

Abstract: An electrode assembly, a method for manufacturing an electrode assembly, and a secondary battery including the electrode assembly are provided. At the core part of the electrode assembly, the angle formed between the longitudinal end portion of an electrode and the curvature maximum point of the electrode is greater than 40° and 98° or less. The electrode assembly may have a circularity of the electrode of 89% or greater. The electrode assembly may have a flat region with a curvature of the electrode of 1 or less that is between 3% and 13.5%. The deformation of the end portion of the first electrode, located at the core part and an adjacent electrode, is reduced to address separator damage and reduce core collapse, core impingement, and core cracking.