Abstract: Disclosed is a battery module having an improved heat balance for a plurality of cylindrical battery cells and a battery pack including the same. The battery module includes a plurality of cylindrical battery cells; a module housing having an accommodation portion formed therein to accommodate the plurality of cylindrical battery cell; and a heat pipe having an outer wall to form a sealed tube structure, the tube structure including a coolant therein, the heat pipe including a wick located to surround an inner wall of the tube structure and having a plurality of micropores formed therein, the heat pipe extending in a horizontal direction along the plurality of cylindrical battery cells, the heat pipe having a plate shape and provided to stand so that both surfaces thereof are oriented in a horizontal direction.

Abstract: Disclosed are a coffee extraction system and a coffee extraction method using the same.

Abstract: The present disclosure relates to a printed circuit board connected to a battery, and more particularly, to a printed circuit board having an improved structure connected to an electrode led out from a battery.

Abstract: A protection circuit board includes a printed circuit board having a circuit is printed on a board formed from an electrically insulating material and two or more connection components disposed on at least one surface of the printed circuit board and are coupled to an electrode terminal of a secondary battery. Additionally, at least one inspection slot having a shape recessed within the connection component and extending to a portion that the electrode terminal of the secondary battery is coupled thereto and is defined in the connection component.

Abstract: Provided is a plate-shaped battery cell in which electrode leads are located at one side end portion of a battery case including an excess sealing portion of a thermally-welded or adhesive structure for sealing an electrode assembly.

Abstract: This invention relates to a ceramic filter for a syringe and a method of manufacturing the same, and more particularly to a ceramic filter for a syringe, which has filter performance equal to or higher than that of a metal filter and which includes alumina (Al2O3) and a sintering aid, thus solving various problems encountered while using the filter, and to a method of manufacturing the same.

Abstract: A battery pack that is mounted to a laptop computer, wherein two or more battery cells that can be charged and discharged are housed in a pack case; the battery cells are cylindrical battery cells having a circular vertical cross-section; the pack case is configured with a lower case in which battery cells are received and an upper case that is coupled to the lower case in order to close and seal the battery cells; in the upper case, a thickness of an upper contact point portion that contacts an upper end external circumferential surface of the battery cells is 70% or less of that of the remaining portions of the upper case, and a first sheet is attached to an outer surface of the upper case corresponding to the upper contact point portion; and in the lower case, a thickness of a lower contact point portion that contacts a lower end external circumferential surface of the battery cells is 70% or less of that of the remaining portions of the lower case, and a second sheet is attached to an outer surface of the

Abstract: Disclosed herein is a method for manufacturing SiC powders with a high purity, and more particularly, a method for manufacturing SiC powders with a high purity by reating a solid phase carbon source as raw materials with gas phase silicon sources generated from a starting material composed of metallic silicon and silicon dioxide powders and, in which it is easy to control the size and crystalline phase of the SiC powders by changing the compositions of the gas phase silicon source to the solid phase carbon source mole ratio, and the temperature and time for the heat treatment.

Abstract: Disclosed herein is a method for manufacturing SiC powders with a high purity, and more particularly, a method for manufacturing SiC powders with a high purity by reating a solid phase carbon source as raw materials with gas phase silicon sources generated from a starting material composed of metallic silicon and silicon dioxide powders and, in which it is easy to control the size and crystalline phase of the SiC powders by changing the compositions of the gas phase silicon source to the solid phase carbon source mole ratio, and the temperature and time for the heat treatment.

Abstract: An imaging lens, which can be suitable for small-size information terminals, such as mobile phones equipped with cameras, or Personal Digital Assistants (PDAs). The imaging lens includes an iris, a first lens having a positive refractive power, a second lens, having a negative refractive power, a third lens having an aspherical shape and a positive refractive power, and a fourth lens having an aspherical shape and a negative refractive power.

Abstract: The present invention relates to an imaging lens, which can be suitably mounted in small-sized information terminals, such as mobile phones equipped with cameras or Personal Digital Assistants (PDAs). The imaging lens includes an iris, a first lens, a second lens, a third lens, and a fourth lens sequentially arranged in a direction from an object side. The first lens is a positive lens having positive reflective power, the second lens is a negative lens having negative reflective power, the third lens is a positive lens, which has at least one surface formed in an aspherical shape and has positive reflective power, and the fourth lens is a negative lens, which has an image side surface formed in an aspherical shape and an object side surface formed in a spherical shape, and has negative reflective power. The imaging lens is configured to satisfy the following conditional expressions (r3+r4)/(r3?r4)>?0.7, v1?v2>15.0, and v3?v2>15.

Abstract: A junction lens device is made by joining a high refractive lens and a low refractive lens using an adhesive. A coating layer for index matching is formed on a surface of at least one of the high refractive lens and the low refractive lens contacting the adhesive to reduce a reflection ratio on a junction surface. The coating layer is formed such that a reflection ratio on the junction surface with respect to a visible light ray is not more than about 0.2%.

Abstract: A junction lens device is made by joining a high refractive lens and a low refractive lens using an adhesive. A coating layer for index matching is formed on a surface of at least one of the high refractive lens and the low refractive lens contacting the adhesive to reduce a reflection ratio on a junction surface. The coating layer is formed such that a reflection ratio on the junction surface with respect to a visible light ray is not more than about 0.2%.