Abstract: A secondary battery includes a pouch coated with a gas absorbent and its manufacturing method are provided. The secondary battery includes a pouch case, a cell stored inside the pouch case, and a gas absorbent between two mating surface of a surplus part of a pouch case.

Abstract: A cell for a secondary battery and a method for manufacturing the same. The cell for a secondary battery includes at least one negative electrode and at least one positive electrode. Each negative electrode and positive electrode are stacked alternately with a separator interposed therebetween, wherein at least one separator includes a plurality of coated portions on at least one surface spaced apart from one another, and each coated portion includes a gas adsorbent and an adhesive binder. According to the cell for a secondary battery and method for manufacturing the same, it is possible to minimize gases trapped in the cell of the secondary battery and to ensure the adhesion between the separator and the electrodes.

Abstract: An electrode for a secondary battery and an electrode assembly including the same. The electrode includes a mixture layer and a gas adsorption layers disposed on at least one surface of an electrode current collector. Since the mixture layer has a pattern structure and the gas adsorption layer is disposed in a regions where the mixture layer is not disposed, there is an advantage in that a secondary battery including the above has excellent performance and stability due to an excellent effect of removing a gas generated during initial charging/discharging of the secondary battery.

Abstract: A secondary battery includes an electrode assembly, a battery can in which the electrode assembly is accommodated, a cap assembly including an upper cap plate defining a positive terminal, the cap assembly being disposed above the battery can, a gasket surrounding a rim of the cap assembly and interposed between the battery can and the cap, and a porous member disposed between the cap assembly and the gasket to discharge gas generated in the battery can to outside the battery can.

Abstract: A method of producing a lithium secondary battery according to the present invention allows a SEI film to be more easily formed by a stepwise charging process of gradually increasing the magnitude of a charging current or a stepwise charging & pulse charging and discharging in primary charging after injection of a first electrolyte and also allows the formed SEI film to be stabilized, and thus gas generated during an activation process can be further reduced, and the resistance of a final battery cell produced by the method can be reduced.

Abstract: The present invention relates to a method for activating a secondary battery. The present invention comprises: a primary charging step of charging a secondary battery including a positive electrode, a negative electrode, a separator, and an electrolyte; a room temperature-aging step of storing, at a room temperature, the secondary battery that has undergone the primary charging step; and a high temperature-aging step of storing, at a high temperature, the secondary battery that has undergone the room temperature-aging step, wherein charging/discharging is performed by alternately applying + current and ? current to the secondary battery at the end of the primary charging step. The method for activating a secondary battery according to the present invention includes alternately applying + current and ? current to the secondary battery at the end of the primary charging step to stabilize an SEI film, thereby shortening a following-up aging time.

Abstract: A press jig includes a pair of plate-shaped members, each of which includes a plurality of protrusions spaced apart from each other on a surface thereof, the protrusions being configured to come into contact with the secondary battery when pressed; and a heating unit that heats the protrusions formed on the plate-shaped member. A method of manufacturing a secondary battery using the same is also provided.

Abstract: A method of activating a battery cell and a method of manufacturing a battery cell including the same, and more particularly, to a battery cell activation method capable of easily discharging gas trapped between a separator and an electrode inside an electrode assembly of a battery cell, and preventing discharge of a large amount of electrolyte solution during a gas discharging process, and a method of manufacturing a battery cell including the same.

Abstract: A jig for pressing a gas analysis monocell according to the present invention comprises: a first plate and a second plate which face each other with a monocell therebetween; a first auxiliary pad positioned between the first plate and the monocell; and a second auxiliary pad positioned between the second plate and the monocell, wherein the first plate and the second plate are formed of a thermosetting resin. When analyzing a gas generated from the monocell during a primary charge, the jig for pressing the monocell according to the present invention presses the thin monocell to prevent a gap from forming between electrodes due to the primary charge, and thus has an effect of deriving more reliable analysis results.

Abstract: A press jig includes a pair of plate-shaped members, each of which includes a plurality of protrusions spaced apart from each other on a surface thereof, the protrusions being configured to come into contact with the secondary battery when pressed; and a heating unit that heats the protrusions formed on the plate-shaped member. A method of manufacturing a secondary battery using the same is also provided.

Abstract: The present invention relates to a method for activating a secondary battery. The present invention comprises: a primary charging step of charging a secondary battery including a positive electrode, a negative electrode, a separator, and an electrolyte; a room temperature-aging step of storing, at a room temperature, the secondary battery that has undergone the primary charging step; and a high temperature-aging step of storing, at a high temperature, the secondary battery that has undergone the room temperature-aging step, wherein charging/discharging is performed by alternately applying + current and ? current to the secondary battery at the end of the primary charging step. The method for activating a secondary battery according to the present invention includes alternately applying + current and ? current to the secondary battery at the end of the primary charging step to stabilize an SEI film, thereby shortening a following-up aging time.

Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.

Abstract: A jig for pressing a gas analysis monocell according to the present invention comprises: a first plate and a second plate which face each other with a monocell therebetween; a first auxiliary pad positioned between the first plate and the monocell; and a second auxiliary pad positioned between the second plate and the monocell, wherein the first plate and the second plate are formed of a thermosetting resin. When analyzing a gas generated from the monocell during a primary charge, the jig for pressing the monocell according to the present invention presses the thin monocell to prevent a gap from forming between electrodes due to the primary charge, and thus has an effect of deriving more reliable analysis results.

Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.

Abstract: The present invention relates to an electrolyte impregnation apparatus comprising: a pressing unit comprising a pressing plate that presses a battery cell in which an electrode assembly and an electrolyte are accommodated; and an ultrasonic vibration unit installed to a portion or the whole of the pressing plate to apply ultrasonic vibration to the battery cell.

Abstract: The present disclosure provides a positive electrode material comprising: a positive electrode active material mixture comprising a positive electrode active material prepared with an active material precursor and a lithium compound, a conductive agent and a binder; and an active material precursor as an additive, in which the active material precursor as the additive is a same substance as the active material precursor as a material of the positive electrode active material.

Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.

Abstract: The present invention relates to an electrolyte impregnation apparatus comprising: a pressing unit comprising a pressing plate that presses a battery cell in which an electrode assembly and an electrolyte are accommodated; and an ultrasonic vibration unit installed to a portion or the whole of the pressing plate to apply ultrasonic vibration to the battery cell.

Abstract: The present disclosure provides a positive electrode material comprising: a positive electrode active material mixture comprising a positive electrode active material prepared with an active material precursor and a lithium compound, a conductive agent and a binder; and an active material precursor as an additive, in which the active material precursor as the additive is a same substance as the active material precursor as a material of the positive electrode active material.

Abstract: A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.