Abstract: A data storage device is provided. The data storage device includes a storage medium configured to store data blocks included in a stripe set, and a controller connected to the storage medium and configured to, decode a first data block disposed in a column among the data blocks, during a read operation of the first data block, and read first group data blocks disposed in the column among the data blocks, based on a read failure of the first data block.

Abstract: Provided is a pouch-type secondary battery including an electrode assembly, electrode tabs extending outward from the electrode assembly, a pouch-type battery case for housing the electrode assembly, first sealing portions for sealing the pouch-type battery case and the electrode tabs, and second sealing portions formed at positions with the exception of electrode tab-positioned sites between the first sealing portions and the electrode assembly. The secondary battery is configured to have a structure such that a channel is formed with electrode tab portions by further sealing inside portions of the electrode tabs with the exception of electrode tab-occupied portions. Such a structure allows for easy unidirectional discharge of gases even when the battery inside reaches a certain level of internal pressure due to evolution of gases and enables previous expectation of the gas discharge direction. Therefore, it is possible to provide a secondary battery with improved safety.

Abstract: A method for manufacturing a lithium ion polymer battery is provided in which in injecting electrolyte into a lithium ion polymer battery, the battery cell is immersed in an electrolyte impregnation bath to allow the electrolyte to be impregnated into the cell. The electrolyte can be impregnated simultaneously, and as the battery cell is activated, the electrolyte is settled down in the interior of the battery cell. Thus, when the battery cell is sealed, a phenomenon that the electrolyte is present at the sealed portion can be prevented.

Abstract: Provided is a pouch-type secondary battery including an electrode assembly, electrode tabs extending outward from the electrode assembly, a pouch-type battery case for housing the electrode assembly, first sealing portions for sealing the pouch-type battery case and the electrode tabs, and second sealing portions formed at positions with the exception of electrode tab-positioned sites between the first sealing portions and the electrode assembly. The secondary battery is configured to have a structure such that a channel is formed with electrode tab portions by further sealing inside portions of the electrode tabs with the exception of electrode tab-occupied portions. Such a structure allows for easy unidirectional discharge of gases even when the battery inside reaches a certain level of internal pressure due to evolution of gases and enables previous expectation of the gas discharge direction. Therefore, it is possible to provide a secondary battery with improved safety.

Abstract: In a battery in which a separator is disposed between a cathode and an anode, a jelly roll is wound with the separator. The cathode, the anode and the separator are received in a battery case and surrounded with an electrolyte, and an opening of the battery case is sealed by a top cap assembly connected to the cathode. A curved groove is formed on the battery case as a safety element for preventing the explosion of the battery due to an increase of internal pressure, the groove being formed along a line of equal stress on the surface of the battery case.

Abstract: A safety plate of a secondary battery is disclosed, which can prevent the explosion of the battery such as a lithium ion secondary battery which is apt to be exploded due to an excessive inner pressure.

Abstract: The present device relates to a correction tape in which a tape guide is formed at the front part of the outer casing of the correction tape so that it can be revolved in a desired angle as the user wants, and a concave groove is formed at the base part of the tape guide and a magnifying glass part in the outer casing so that the user can easily affirm the part to be corrected. According to the device, a concave groove (13) is formed at the bottom face; and each revolving part (11) is formed at the front face and upper and lower face of the rear end, around the concave groove (13); and at the outer face of the revolving part (11) of rear upper face, a tape guide (1) having a protrusion (12) for adjusting angle is combined with an inserting groove (21) of the inner face of the outer casing (20) having magnifying glass part (23) in order to be revolved; and the inner face of the inserting groove (21) has fitting grooves (22) at regular intervals.