Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Abstract: Disclosed herein is a battery pack including (a) a battery cell array comprising two or more battery cells, each of which has an electrode assembly of a cathode/separator/anode structure disposed in a battery case together with an electrolyte in a sealed state, arranged in the lateral direction, (b) a protection circuit module (PCM) including connection terminals connected to electrode terminals of the battery cells by resistance welding, metal plates to electrically connect the battery cells to each other, and a protection circuit to control an operation of the battery pack, the PCM being connected to the upper end of the battery cell array, and (c) a pack case in which the battery cell array and the protection circuit module are disposed, wherein electrical connection regions between cathode terminals of the battery cells and the protection circuit module are configured to have a structure in which conductive plates attached to the tops of the respective connection terminals of the protection circuit module

Abstract: A wheel button structure is provided. The wheel button structure includes a case part including an upper case through which a guide hole is formed, a wheel part rotating in the case part with respect to a rotation axis fixed to one side of the case part, connected to a transfer device operated while interlocked with the wheel part, and including a barrier wall formed on a surface facing the guide hole to wrap a plurality of times around the rotation axis, and a stopper including a lower portion inserted between a first part of the barrier wall and a second part of the barrier wall adjacent to the first part of the barrier wall and an upper portion inserted into the guide hole, wherein the stopper moves along the guide hole when the wheel part rotates.

Abstract: Disclosed herein is a battery pack including a battery cell array including two or more battery cells, each of which has an electrode assembly of a cathode/separator/anode structure disposed in a battery case together with an electrolyte in a sealed state, arranged in the lateral direction, a protection circuit module (PCM) connected to the upper end of the battery cell array to control the operation of the battery pack, a pack case in which the battery cell array and the protection circuit module are disposed, and a spacer mounted between the pack case and the battery cell array to provide a space accommodating the increase in thickness of the battery cell array during charge and discharge of the battery pack.

Abstract: A computing apparatus includes a first body having a keyboard, a second body having a display, and a support of which one end portion is connected to the first body through at least one first hinge unit and the other end portion is connected to the second body through at least one second hinge unit disposed in parallel to the first hinge unit. The first hinge unit is disposed to be spaced away from a rear end portion of the first body so that when the second body and the support are simultaneously rotated in a direction in which the second body and the support are spaced away from the first body, a rear end portion of the second body interferes with the rear end portion of the first body and the second body is rotated in a direction in which the second body is spaced away from the support.

Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Abstract: The present specification provides a polymer electrolyte membrane, a membrane electrode assembly including the polymer electrolyte membrane, and a fuel cell including the membrane electrode assembly.

Abstract: A hinge apparatus that connects a first member and a second member to each other so that the first member and the second member are mutually foldable. The hinge apparatus includes a first gear disposed on the first member to rotate according to a rotation of the first member and a second gear disposed on the second member and tooth-engaged with the first gear to rotate according to a rotation of the second member or a rotation of the first gear. The hinge apparatus also including a pressure member to reinforce a mesh force between the first and the second gears.

Abstract: Disclosed is a sealed structure for an electrochemical device having a hollow space therein, further comprising a material generating gases via thermal decomposition in the hollow space. Also, disclosed is an electrochemical device comprising a cathode, an anode, a separator, an electrolyte, a casing for the device, and the structure for the electrochemical device.

Abstract: Disclosed is a sealed structure for an electrochemical device having a hollow space therein, further comprising a material generating gases via thermal decomposition in the hollow space. Also, disclosed is an electrochemical device comprising a cathode, an anode, a separator, an electrolyte, a casing for the device, and the structure for the electrochemical device.

Abstract: A hinge apparatus connects a first member and a second member to each other so that the first and second members are mutually foldable, and is usable with a computing apparatus. The hinge apparatus includes first and second main gears which are disposed on the first and the second members, respectively, a plurality of idle gears which are disposed between the first and the second main gears so that the first and the second main gears are interlocked with each other, and a pressure member which reinforces a mesh force between the first and the second main gears and the plurality of idle gears.

Abstract: Disclosed herein is a pack case for battery packs in which a battery cell array including two or more battery cells arranged in a lateral direction and a protection circuit module (PCM) including a protection circuit to control an operation of the battery pack are mounted, the pack case including a lower case, on which the battery cell array and the protection circuit module are mounted, and an upper case disposed above the lower case so that the upper case covers the lower case to fix the battery cell array and the protection circuit module in place, wherein a lower case is partitioned into a battery cell mounting part, on which the battery cells are mounted, and a protection circuit module mounting part, on which the protection circuit module is mounted, a partition wall is formed at an interface between the battery cell mounting part and the protection circuit module mounting part, and openings, through which electrode terminals of the battery cells are exposed toward the protection circuit module, are for

Abstract: Disclosed is a sealed structure for an electrochemical device having a hollow space therein, further comprising a material generating gases via thermal decomposition in the hollow space. Also, disclosed is an electrochemical device comprising a cathode, an anode, a separator, an electrolyte, a casing for the device, and the structure for the electrochemical device.

Abstract: A coupling structure for a multi-layered chip filter includes a resonator layer including a resonator pattern with spaced areas and a coupling layer including at least two separated overlap portion patterns overlapped with the spaced areas of the resonator pattern respectively and a connecting portion pattern having multiple linear portions connecting the separated overlap portion patterns in an area not-overlapped with the resonator pattern.

Abstract: A portable electronic device includes first and second device units and at least one hinge assembly configured to pivotably connect the second device unit to the first device unit. The hinge assembly includes a first fixing unit configured to be fixed to the first device unit, a second fixing unit configured to be fixed to the second device unit, a plurality of shaft members configured to be arranged in parallel with one another and to include first and second outer shaft members respectively mounted on the first and second fixing units and a plurality of inner shaft members arranged between the first and second outer shaft members, and a gear unit mounted on the shaft members to connect the plurality of shaft members with one another through a gear mesh.

Abstract: A random number generation method and apparatus are disclosed. In the random number generation method, a random number is generated using a plurality of digital signals existing in various storage devices, and thus the speed at which a random number is generated may be significantly increased.

Abstract: Disclosed is the structure of a center pin inserted into the winding center of a winding-type electrode assembly of an electrochemical device, which has a case containing the winding-type electrode assembly. The center pin can be manufactured through a simple process and can secure the safety of an electrochemical device when physical impact (e.g. squeezing, shock) is applied from the outside or when the internal temperature rises. The center pin is manufactured by winding a planar substrate, which has at least two protrusions formed in an embossing type or which has at least two scores formed in a predetermined shape, into a tubular shape.

Abstract: A computing apparatus includes a first body having a keyboard, a second body having a display, and a support of which one end portion is connected to the first body through at least one first hinge unit and the other end portion is connected to the second body through at least one second hinge unit disposed in parallel to the first hinge unit. The first hinge unit is disposed to be spaced away from a rear end portion of the first body so that when the second body and the support are simultaneously rotated in a direction in which the second body and the support are spaced away from the first body, a rear end portion of the second body interferes with the rear end portion of the first body and the second body is rotated in a direction in which the second body is spaced away from the support.

Abstract: A data storage device protecting security code stored therein and a data storage system including same are disclosed. The data storage device efficiently prevents unauthorized access to the security code by allowing command descriptor block (CDB) information to be read using only a read-only memory (ROM).