Abstract: A method for manufacturing a secondary battery and a pre-degassing device for manufacturing a secondary battery are disclosed. The method comprises: an accommodation process of accommodating an electrode assembly in an accommodation part formed inside a battery case to form a cell; an electrolyte injection process of injecting an electrolyte into the accommodation part of the battery case; a primary aging process of elapsing a predetermined time so that the electrode assembly is impregnated into the electrolyte; a primary charging process of primarily charging and discharging the cell; a pre-degassing process of pressing the battery case to discharge a gas inside the electrode assembly to the outside of the electrode assembly; and a secondary aging process of elapsing a predetermined time so that the electrode assembly is impregnated into the electrolyte, wherein, in the pre-degassing process, the battery case is pressed while applying heat to the battery case.

Abstract: An electrode assembly manufacturing apparatus includes an electrode sheet supply unit for supplying an electrode sheet on which electrode mixture coating and non-coating portions are formed, a cutting unit at the rear of the supply unit for forming an electrode tab at the electrode sheet, and a lamination unit at the rear of the supply unit and configured to laminate positive and negative electrodes stacked with a separator between them. A cutting unit die supports the electrode sheet and an ultrasonic cutter spaced from the die forms the tab. A cutting line of a cutting edge of the cutter corresponds to a periphery of a unit electrode in a tab forming direction. The cutting and lamination units are on the same line in a continuous process to reduce a necessary space for electrode assembly manufacture and prevent electrode sheet foil deformation and electrode mixture layer damage in the cut section.

Abstract: The present technology relates to an electrochemical device comprising a separation membrane having a dotted line, and a short circuit inducing member, and a method capable of evaluating safety under internal short circuit conditions by using the electrochemical device. When using the electrochemical device of the present invention, it is possible to easily evaluate safety under internal short circuit conditions without physical deformation of an energy storage apparatus.

Abstract: An apparatus for manufacturing an electrode according to an embodiment of the present invention includes a pattern formation mechanism configured to form a pattern groove in an electrode, the electrode including an electrode collector and a coating part made of an electrode active material applied on at least one surface of the electrode collector. The pattern formation mechanism presses a surface of the coating part to form the pattern groove, the pattern groove being an intaglio pattern in the coating part. Related methods for manufacturing the electrode and the electrode manufactured thereby are provided.

Abstract: The present technology relates to: an electrochemical element which comprises a separator having through-holes formed therein, a through-hole cover material, and a spacer; and a method for using the electrochemical element to evaluate the safety of an energy storage device by means of an internal short circuit. An energy storage device including the electrochemical element according to the present invention is characterized in that: the energy storage device can be restored, after an internal short circuit evaluation test, to a state in which a short circuit has not occurred; and a repeat test and evaluation can be carried out without disassembly and reassembly.

Abstract: The present invention relates to a battery cell comprising a separator in which a perforated line and magnetic bodies adjacent to the perforated line are formed, and a method for evaluating battery cell safety by using same, wherein the battery cell can induce an internal short circuit without physical deformation of the cell structure, and can be effectively applied to evaluation of battery cell safety against an internal short circuit.

Abstract: The present invention relates to: a battery cell including a punched portion formed through a separator, and a short-circuit inducing member disposed on the punched portion; and a method for evaluating the safety of a battery under internal short-circuit conditions by using the battery cell. Using the battery cell of the present invention, the safety of a battery under internal short-circuit conditions can be easily evaluated without physical deformation or reassembly of the battery cell.

Abstract: The present invention relates to a method for manufacturing a secondary battery and a pre-degassing device for manufacturing a secondary battery.

Abstract: The present invention relates to an electrode tab welding apparatus for welding electrode tabs of a pouch-shaped battery to each other in a state of gathering the electrode tabs using tab guides in a preliminary welding step of welding the electrode tabs to each other before welding the electrode tabs and an electrode lead of the pouch-shaped battery to each other and an electrode tab welding method using the same.

Abstract: An apparatus for manufacturing a secondary battery is provided. The apparatus comprises a separation sheet supply device configured to supply two separation sheets configured to be disposed vertically. An electrode supply device is configured to supply electrodes to be disposed between the two separation sheets and on a top surface of one of the separation sheets. The one of the separation sheets is disposed at an upper side. A lamination device is configured to bond the two separation sheets and the electrodes to each other. An ultrasonic cutting device is configured to bond surfaces of the two separation sheets to each other and simultaneously cut a bonding surface of the two separation sheets.

Abstract: An electrode assembly manufacturing apparatus includes an electrode sheet supply unit for supplying an electrode sheet on which electrode mixture coating and non-coating portions are formed, a cutting unit at the rear of the supply unit for forming an electrode tab at the electrode sheet, and a lamination unit at the rear of the supply unit and configured to laminate positive and negative electrodes stacked with a separator between them. A cutting unit die supports the electrode sheet and an ultrasonic cutter spaced from the die forms the tab. A cutting line of a cutting edge of the cutter corresponds to a periphery of a unit electrode in a tab forming direction. The cutting and lamination units are on the same line in a continuous process to reduce a necessary space for electrode assembly manufacture and prevent electrode sheet foil deformation and electrode mixture layer damage in the cut section.

Abstract: The present invention relates to a method for manufacturing a secondary battery and a pre-degassing device for manufacturing a secondary battery.

Abstract: The present invention relates to a battery cell comprising a separator in which a perforated line and magnetic bodies adjacent to the perforated line are formed, and a method for evaluating battery cell safety by using same, wherein the battery cell can induce an internal short circuit without physical deformation of the cell structure, and can be effectively applied to evaluation of battery cell safety against an internal short circuit.

Abstract: Discussed is method for manufacturing a unit cell in which a certain number of separators and electrodes are alternately stacked, the method including: an adhesive applying operation of continuously providing a lower separator at a relatively lower position and an upper separator at a relatively upper position and applying an adhesive to a surface of at least one separator of the lower separator or the upper separator; an electrode inputting operation of inputting an electrode onto the lower separator; and a stacking operation of positioning and stacking the electrode between the lower separator and the upper separator. The adhesive applied on the at least one separator allows the electrode to be bonded to the at least one separator or allows the other separator to be bonded to the at least one separator, thereby preventing the electrode from moving relative to at least one of the upper and lower separators.

Abstract: The present technology relates to: an electrochemical element which comprises a separator having through-holes formed therein, a through-hole cover material, and a spacer; and a method for using the electrochemical element to evaluate the safety of an energy storage device by means of an internal short circuit. An energy storage device including the electrochemical element according to the present invention is characterized in that: the energy storage device can be restored, after an internal short circuit evaluation test, to a state in which a short circuit has not occurred; and a repeat test and evaluation can be carried out without disassembly and reassembly.

Abstract: The present technology relates to an electrochemical device comprising a separation membrane having a dotted line, and a short circuit inducing member, and a method capable of evaluating safety under internal short circuit conditions by using the electrochemical device. When using the electrochemical device of the present invention, it is possible to easily evaluate safety under internal short circuit conditions without physical deformation of an energy storage apparatus.

Abstract: The present invention relates to: a battery cell including a punched portion formed through a separator, and a short-circuit inducing member disposed on the punched portion; and a method for evaluating the safety of a battery under internal short-circuit conditions by using the battery cell. Using the battery cell of the present invention, the safety of a battery under internal short-circuit conditions can be easily evaluated without physical deformation or reassembly of the battery cell.

Abstract: Disclosed is a composition for improving microbial flora containing a herbal medicine extract as an active ingredient, wherein the composition can inhibit the growth of harmful bacteria and promote the growth of beneficial bacteria.

Abstract: Provided is a system for registering a terminal, including: a verification unit to verify whether the terminal is a closed subscriber group (CSG) member in response to a registration request to a small base station that is received from the terminal; a search unit to search for an owner terminal of the small base station when the terminal is not the CSG member as the verification result; a request unit to request the found owner terminal to determine whether to approve a CSG member registration of the terminal; and a registration unit to register the terminal as a temporary CSG member when the owner terminal approves the CSG member registration in response to the request.

Abstract: A mobile terminal includes a subscriber identification module (SIM) card unit to receive and store Internet Protocol (IP) device information including a local IP address of an IP device from a femtocell, and a control unit to transmit a control command to control the IP device using the local IP address.