Abstract: A degassing system of a pouch for a secondary battery is provided. In the degassing system, after inhaling gas regardless of the size of a cell pocket, the gas may be processed, and the convenience of work may be increased by setting the period of degassing time or the amount of gas to be discharged according to the size of a pouch, and an abnormality in a suction line for degassing may be automatically detected according to a comparison value by comparing the amount of discharged gas with a reference value preset by each pouch size.

Abstract: A battery cell includes an electrode assembly; a case comprising an accommodation portion accommodating the electrode assembly and a sealing portion formed on a periphery of the accommodation portion; and a fixing member disposed between the accommodation portion and the sealing portion to adhere each other; wherein the fixing member comprises a core layer, and an adhesive layer is stacked on both surfaces of the core layer.

Abstract: Provided is a superwide pouch type secondary battery comprising an electrode assembly including a cathode plate, an anode plate, and a separator; a pouch surrounding the electrode assembly; and electrode tabs connected to both ends of the electrode assembly and protruding outward of the pouch, wherein the electrode tabs connected to the both ends of the electrode assembly include one or more cathode tabs and anode tabs, respectively, and width of battery cell is more than 4 times longer than height of battery cell such that loading efficiency of the pouch type secondary battery into a vehicle and an energy density may be improved without increasing an internal electrode.

Abstract: A pouch-type secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate; and a pouch film in which the electrode assembly is accommodated, wherein the pouch film includes a first side sealing portion from which a negative electrode lead connected to the electrode assembly protrudes, a second side sealing portion from which a positive electrode lead connected to the electrode assembly protrudes, and an upper sealing portion having both end portions connected to the first and second side sealing portions, and the pouch film includes a folded portion disposed on an end of the first side sealing portion and an end of the second side sealing portion, and folded toward a bottom portion of the pouch film, wherein the folded portion is folded in one direction.

Abstract: An embodiment of the present invention relates to a pouch-type secondary battery. According to embodiment of the present invention, the pouch-type secondary battery includes: an case configured to house an electrode assembly from which electrode tab are drawn out; sealing parts formed by adhering the case along outer peripheries of the electrode assembly; and folding parts formed by folding the sealing parts of surfaces on which the electrode tab drawn to an outside of the case is not formed, wherein a length of the folding part has a relationship with a thickness of the electrode assembly as the following equation: H?T/2 (wherein, H is the height of the folded folding part, T is the thickness of the electrode assembly, based on a cross-section perpendicular to a direction in which the electrode tabs of the electrode assembly are drawn out).

Abstract: A ventilation device for a secondary battery includes a frame including a first frame and a second frame, and a connector connecting the first frame and the second frame to each other and including a slit portion. Each of the first frame and the second frame includes a facing surface that faces each other, and at least one of the first frame and the second frame includes a ventilation guiding portion recessed from the facing surface. The frame includes a terrace expansion restraining portion including an inclined surface structured to support a pouch terrace portion of the secondary battery and formed at a surface of the frame adjacent to a surface including the ventilation guiding portion. A ventilation control portion is formed to provide a space between the first frame and the second frame to be connected to the ventilation guiding portion.

Abstract: A ventilation device for a secondary battery includes a frame including a first frame and a second frame, and a connector connecting the first frame and the second frame to each other and including a slit portion formed therein. Each of the first frame and the second frame has a facing surface that faces each other, and at least one of the first frame and the second frame includes a ventilation guiding portion recessed from the facing surface, and a ventilation control portion is formed to provide a space between the first frame and the second frame and to be connected to the ventilation guiding portion.

Abstract: An embodiment of the present invention relates to a pouch-type secondary battery. According to embodiment of the present invention, the pouch-type secondary battery includes: an case configured to house an electrode assembly from which electrode tab are drawn out; sealing parts formed by adhering the case along outer peripheries of the electrode assembly; and folding parts formed by folding the sealing parts of surfaces on which the electrode tab drawn to an outside of the case is not formed, wherein a length of the folding part has a relationship with a thickness of the electrode assembly as the following equation: H?T/2 (wherein, H is the height of the folded folding part, T is the thickness of the electrode assembly, based on a cross-section perpendicular to a direction in which the electrode tabs of the electrode assembly are drawn out).

Abstract: Proposed is a method of manufacturing a secondary battery. The method includes inserting an electrode assembly into a pouch, injecting an electrolyte into the pouch and aging, charging the electrode assembly, degassing to discharge gas from the pouch, discharging the electrode assembly, and charging to a shipment charge level. Since an anode active material is added to an anode material of a secondary battery through the method, there is an effect of further enhancing the reliability of the secondary battery in the manufacturing method of the secondary battery.

Abstract: Provided is a superwide pouch type secondary battery comprising an electrode assembly including a cathode plate, an anode plate, and a separator; a pouch surrounding the electrode assembly; and electrode tabs connected to both ends of the electrode assembly and protruding outward of the pouch, wherein the electrode tabs connected to the both ends of the electrode assembly include one or more cathode tabs and anode tabs, respectively, and width of battery cell is more than 4 times longer than height of battery cell such that loading efficiency of the pouch type secondary battery into a vehicle and an energy density may be improved without increasing an internal electrode.

Abstract: A pouch secondary battery is disclosed. One aspect of the present invention provides a pouch secondary battery including a casing configured to accommodate an electrode assembly from which electrode tabs are led; and the casing includes a sealing portion formed on three sides of four sides of the pouch secondary battery and an adhesion portion formed on the remaining one side; and an extending portion protruding perpendicularly with respect to the adhesion portion is formed in a portion adjacent to the adhesion portion in the sealing portion.

Abstract: A secondary battery module includes a plurality of pouch type secondary batteries stacked in parallel, and a cooling plate configured to cool the plurality of stacked pouch type secondary batteries, wherein each of the pouch type secondary batteries includes a sealing portion and a close contact portion formed by an exterior material in an outer periphery thereof, the sealing portion is formed at three of four sides of the pouch type secondary battery and the close contact portion is formed at the other side of the pouch type secondary battery, an extending portion protruding in a direction perpendicular to the close contact portion is formed at a portion of the sealing portion adjacent to the close contact portion, and the cooling plate is brought into contact with the close contact portions of the plurality of stacked pouch type secondary batteries and cools the close contact portions.

Abstract: Provided is a superwide pouch type secondary battery comprising an electrode assembly including a cathode plate, an anode plate, and a separator; a pouch surrounding the electrode assembly; and electrode tabs connected to both ends of the electrode assembly and protruding outward of the pouch, wherein the electrode tabs connected to the both ends of the electrode assembly include one or more cathode tabs and anode tabs, respectively, and width of battery cell is more than 4 times longer than height of battery cell such that loading efficiency of the pouch type secondary battery into a vehicle and an energy density may be improved without increasing an internal electrode.

Abstract: A pouch secondary battery is disclosed. One aspect of the present invention provides a pouch secondary battery including a casing configured to accommodate an electrode assembly from which electrode tabs are led; and the casing includes a sealing portion formed on three sides of four sides of the pouch secondary battery and a close contact portion formed on the remaining one side; and an extending portion protruding perpendicularly with respect to the close contact portion is formed in a portion adjacent to the close contact portion in the sealing portion.

Abstract: A secondary battery module includes a plurality of pouch type secondary batteries stacked in parallel, and a cooling plate configured to cool the plurality of stacked pouch type secondary batteries, wherein each of the pouch type secondary batteries includes a sealing portion and a close contact portion formed by an exterior material in an outer periphery thereof, the sealing portion is formed at three of four sides of the pouch type secondary battery and the close contact portion is formed at the other side of the pouch type secondary battery, an extending portion protruding in a direction perpendicular to the close contact portion is formed at a portion of the sealing portion adjacent to the close contact portion, and the cooling plate is brought into contact with the close contact portions of the plurality of stacked pouch type secondary batteries and cools the close contact portions.

Abstract: A degassing system of a pouch for a secondary battery is provided. In the degassing system, after inhaling gas regardless of the size of a cell pocket, the gas may be processed, and the convenience of work may be increased by setting the period of degassing time or the amount of gas to be discharged according to the size of a pouch, and an abnormality in a suction line for degassing may be automatically detected according to a comparison value by comparing the amount of discharged gas with a reference value preset by each pouch size.

Abstract: A degassing device of a pouch for a secondary battery and a degassing device using the same are provided. The degassing apparatus includes a separation unit including an adsorption plate adsorbing at least one surface of the pouch, and forming a space inside of the pouch by pulling the adsorption plate, and a gas removal unit installed on the adsorption plate, piercing the pouch with a needle having a gas discharge path therein, and removing gas from the pouch through the gas discharge path.

Abstract: A battery cell includes an electrode assembly; a case comprising an accommodation portion accommodating the electrode assembly and a sealing portion formed on a periphery of the accommodation portion; and a fixing member disposed between the accommodation portion and the sealing portion to adhere each other; wherein the fixing member comprises a core layer, and an adhesive layer is stacked on both surfaces of the core layer.

Abstract: Provided is a superwide pouch type secondary battery comprising an electrode assembly including a cathode plate, an anode plate, and a separator; a pouch surrounding the electrode assembly; and electrode tabs connected to both ends of the electrode assembly and protruding outward of the pouch, wherein the electrode tabs connected to the both ends of the electrode assembly include one or more cathode tabs and anode tabs, respectively, and width of battery cell is more than 4 times longer than height of battery cell such that loading efficiency of the pouch type secondary battery into a vehicle and an energy density may be improved without increasing an internal electrode.

Abstract: Provided is a venting system of a pouch type lithium secondary battery. According to an exemplary embodiment of the present invention, the venting system of a pouch type lithium secondary battery includes a venting device that controls opening and closing of a passage communicating an internal pressure of a pouch to discharge gas from an inner portion of the pouch.