Abstract: An activation method for a lithium secondary battery having an electrode lead includes: a pre-aging process aging the lithium secondary battery at room temperature; a formation process charging the lithium secondary battery; and a roll-pressing process of pressurizing the lithium secondary battery using a pressure roller. The roll-pressing process includes pressing from a center of the lithium secondary battery toward an end of the lithium secondary battery where the electrode lead is located.

Abstract: A motor-driving apparatus for driving a motor having a plurality of windings respectively corresponding to a plurality of phases is provided. The motor-driving apparatus includes a first inverter having a plurality of first switching devices and connected to first ends of the plurality of windings and a second inverter having a plurality of second switching devices and connected to second ends of the plurality of windings. A third switching device is configured to selectively connect and disconnect points at which a number of turns of each of the windings is divided in a preset ratio. A controller is configured to adjust an on/off state of the first to third switching devices based on required output of the motor.

Abstract: A content server may receive from a user device a request for a content asset and may send to the playback device a permit for accessing the content asset. The permit may be used by the content server in order to enforce a concurrency restriction, or a number of concurrent playbacks of one or more content assets desired or permitted by the playback device. In response to receiving a request for a content asset segment associated with a content asset, the content server may determine whether the number of permits currently granted to the playback device exceeds the number of desired or permitted accesses by the playback device, or a group of playback devices, to the content asset or one or more content assets. If so, then the content server may discontinue sending to the playback device any further content asset segments associated with that content asset.

Abstract: The present invention is a method for manufacturing a secondary battery. An electrode assembly and an electrolyte are accommodated into a body of a battery case. The body of the battery case has an accommodation part and a gas pocket part, and a passage that extends from the accommodation part to the outside discharges an internal gas from the accommodation part through the gas pocket part. The battery case is seated in a seating step on a support block, which has an inclined part on a side surface thereof, to support the battery case. The body is pressed to discharge a gas accommodated in the accommodation part through the gas pocket part in the battery case. This method allows easy discharging of internal gas while reducing discharge of the electrolyte with the gas.

Abstract: An electrode includes a unit body stack part formed by stacking at least one basic unit having a four-layer structure in which a first electrode, a first separator, a second electrode and a second separator are sequentially stacked. Each surface of the first separator and the second separator is coated with a coating material having adhesiveness, and the basic unit adheres to an adjacent radial unit in the unit body stack part. The electrode assembly of allows a heating and pressing process to be performed prior to a primary formation process so that a separator of one basic unit and a first electrode of the other basic unit to be adhered and fixed by a coating material coated on the separator, and thus a bending phenomenon caused by a difference in electrode expansion rates in a charging/discharging process is prevented.

Abstract: A direct cooling type power module comprising, an enclosure filled with an insulating fluid, a power semiconductor device disposed inside the enclosure and a bonding unit comprising a porous layer, and a thermally conductive layer to which the power semiconductor device is bonded, and allowing the power semiconductor device to exchange heat with the insulating fluid by the porous layer and the thermally conductive layer.

Abstract: A content server may receive from a user device a request for a content asset and may send to the playback device a permit for accessing the content asset. The permit may be used by the content server in order to enforce a concurrency restriction, or a number of concurrent playbacks of one or more content assets desired or permitted by the playback device. In response to receiving a request for a content asset segment associated with a content asset, the content server may determine whether the number of permits currently granted to the playback device exceeds the number of desired or permitted accesses by the playback device, or a group of playback devices, to the content asset or one or more content assets. If so, then the content server may discontinue sending to the playback device any further content asset segments associated with that content asset.

Abstract: The present disclosure relates to methods of verifying enhanced rock weathering using immobile trace elements found within a mineral amendment. Further disclosed are mineral amendments that enable enhanced rock weathering.

Abstract: A device for charging and discharging a battery cell capable of suppressing a swelling phenomenon of a terrace portion of a battery cell during a formation process of the battery cell includes first and second plates configured to receive a battery cell therebetween and to press two surfaces of the battery cell; first and second grippers connected to the first and second plates, respectively, the first and second grippers protrude to face each other and configured to contact a lead region of the battery cell; and first and second pressing pads positioned inward of the first and second grippers, the first and second pressing pads being configured to contact a terrace region of the battery cell. A method of charging and discharging a battery cell using the same is also provided.

Abstract: The present invention relates to a method for manufacturing a secondary battery and an apparatus for manufacturing a secondary battery. The method for manufacturing the secondary battery according to the present invention comprises: an accommodation process of accommodating an electrode assembly, in which electrodes and separators are alternately stacked, an electrolyte, and one side portion of electrode leads connected to the electrodes, in a pouch to form a cell; an activation process of charging the cell to activate the cell; a pressing process of sequentially pressing the cell through pressing rolls after the activation process to press the cell; and a degassing process of discharging an internal gas of the cell to the outside after the pressing process.

Abstract: The present disclosure relates to methods of verifying enhanced rock weathering using immobile trace elements found within a mineral amendment. Further disclosed are mineral amendments that enable enhanced rock weathering.

Abstract: A device for charging and discharging a battery cell includes first and second plates spaced from each other, the first and second plates being configured to press respective first and second surfaces of a battery cell locatable therebetween, and first and second pressing blocks located on the first and second plates, respectively, the first and second pressing blocks protruding from the first and second plates to face each other. The first and second pressing blocks are locatable in a space between a body and a gas pocket of the battery cell. A method using the device is also provided.

Abstract: The present invention is a method for manufacturing a secondary battery. An electrode assembly and an electrolyte are accommodated into a body of a battery case. The body of the battery case has an accommodation part and a gas pocket part, and a passage that extends from the accommodation part to the outside discharges an internal gas from the accommodation part through the gas pocket part. The battery case is seated in a seating step on a support block, which has an inclined part on a side surface thereof, to support the battery case. The body is pressed to discharge a gas accommodated in the accommodation part through the gas pocket part in the battery case. This method allows easy discharging of internal gas while reducing discharge of the electrolyte with the gas.

Abstract: Methods for activating a secondary battery are provided, as well as methods for manufacturing a secondary battery, which include: providing a secondary battery including an electrode assembly and an electrolyte solution in a battery case, pre-aging the secondary battery at room temperature to provide a pre-aged secondary battery; initially charging the pre-aged secondary battery to provide an initially-charged secondary battery; aging the initially-charged secondary battery at room temperature to provide a room-temperature-aged secondary battery; fully charging the room-temperature-aged secondary battery to a voltage of 4.4V or more to provide a fully-charged secondary battery; and degassing the charged secondary battery to remove gas inside the fully-charged secondary battery. According to these methods, it is possible to increase the remaining amount of an electrolyte solution inside an electrode by fully charging a secondary battery.

Abstract: The present invention provides a gas removing device, which removes a gas generated inside a pouch, in which an electrode assembly is accommodated. The gas removing device includes a pair of vacuum tubes configured to press opposing surfaces of a pouch so as to form a vacuum surface on the pouch; a heating member provided on a pressing surface of each of the vacuum tubes, which presses the pouch, is configured to seal only a portion of an edge of the vacuum surface so as to form a sealed part and an unsealed part; a cutting member configured to cut the vacuum surface of the pouch and form a cutoff hole; and a gas discharging member configured to discharge a gas from inside the pouch to the outside through the unsealed part, the cutoff hole, and the vacuum tubes.

Abstract: A device for charging and discharging a battery cell capable of suppressing a swelling phenomenon of a terrace portion of a battery cell during a formation process of the battery cell includes first and second plates configured to receive a battery cell therebetween and to press two surfaces of the battery cell; first and second grippers connected to the first and second plates, respectively, the first and second grippers protrude to face each other and configured to contact a lead region of the battery cell; and first and second pressing pads positioned inward of the first and second grippers, the first and second pressing pads being configured to contact a terrace region of the battery cell. A method of charging and discharging a battery cell using the same is also provided.

Abstract: A content server may receive from a user device a request for a content asset and may send to the playback device a permit for accessing the content asset. The permit may be used by the content server in order to enforce a concurrency restriction, or a number of concurrent playbacks of one or more content assets desired or permitted by the playback device. In response to receiving a request for a content asset segment associated with a content asset, the content server may determine whether the number of permits currently granted to the playback device exceeds the number of desired or permitted accesses by the playback device, or a group of playback devices, to the content asset or one or more content assets. If so, then the content server may discontinue sending to the playback device any further content asset segments associated with that content asset.

Abstract: An electronic device includes a cover window defining a front surface of the electronic device; a first sensor provided under the cover window and configured to detect a pressure applied to the cover window; a second sensor provided on a same layer as the first sensor and configured to detect the pressure applied to the cover window; a first adhesive member provided on at least one area under the second sensor, wherein the second sensor is less deformed than the first sensor by the pressure applied to the cover window provided by the first adhesive member; and a processor configured to: acquire a first pressure change amount detected by the first sensor and a second pressure change amount detected by the second sensor; and detect the pressure applied to the cover window based on the first pressure change amount and the second pressure change amount.

Abstract: The present invention is a method for manufacturing a secondary battery. An electrode assembly and an electrolyte are accommodated into a body of a battery case. The body of the battery case has an accommodation part and a gas pocket part, and a passage that extends from the accommodation part to the outside discharges an internal gas from the accommodation part through the gas pocket part. The battery case is seated in a seating step on a support block, which has an inclined part on a side surface thereof, to support the battery case. The body is pressed to discharge a gas accommodated in the accommodation part through the gas pocket part in the battery case. This method allows easy discharging of internal gas while reducing discharge of the electrolyte with the gas.

Abstract: The present disclosure relates to methods of verifying enhanced rock weathering using immobile trace elements found within a mineral amendment. Further disclosed are mineral amendments that enable enhanced rock weathering.