Abstract: Disclosed are an arc path generation unit and a direct current relay including the same. An arc path generation unit according to various exemplary embodiments of the present disclosure comprises a Halbach array or a magnet part which forms a magnetic field in a space part for accommodating fixed contacts. The formed magnetic field forms an electromagnetic force, together with the current flowing a direct current relay. The formed electromagnetic force may induce generated arcs. The electromagnetic force formed near each fixed contact is formed in a direction going away from each fixed contact. Therefore, the generated arcs do not meet each other, and thus can be effectively suppressed and discharged.

Abstract: The present invention relates to a positive electrode and a secondary battery including the same, the positive electrode including a current collector and a positive electrode active material layer disposed on the current collector, wherein the positive active material layer includes a positive electrode active material, a binder, and a multi-walled carbon nanotube, wherein the multi-walled carbon nanotube has an average length of 1-2 ?m and has a length standard deviation of 0.5 ?m or less.

Abstract: A refrigerator includes a main body having a storage compartment formed therein, and a cooling module forming a machine compartment in which a compressor is disposed and detachably mounted to the main body. The cooling module includes a module body forming the machine compartment, a condenser of an L shape disposed on one side of the compressor and including a first part corresponding to a portion of a rear surface of the machine compartment and a second part corresponding to one side of the machine compartment. The condenser is vertically mounted on a base plate disposed below the module body. A module cover is provided to cover the rear of the machine compartment, and a suction flow path includes first and second suction flow paths.

Abstract: A positive electrode and a secondary battery including the same are provided. The positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, wherein the positive active material layer includes a positive electrode active material, a binder, and a multi-walled carbon nanotube, wherein the multi-walled carbon nanotube has an average length of 1-2 ?m and has a length standard deviation of 0.5 ?m or less.

Abstract: An electrode includes an electrode active material, wherein the electrode active material layer includes an electrode active material, polyvinylidene fluoride, and a conductive agent, wherein the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded to each other, and the carbon nanotube structure is included in an amount of 0.01 wt % to 0.5 wt % in the electrode active material layer. A secondary battery including the same, and a method of preparing the electrode are also provided.

Abstract: Disclosed are a movable contact part and a direct current relay comprising the same. The movable contact part, according to one embodiment of the present disclosure, comprises a coupling part which is provided to each component. The coupling part provided to each component is coupled to the coupling part provided to another adjacently positioned component. Thus, a coupled state between each of the components constituting the movable contact part may be easily and stably formed.

Abstract: Disclosed are a movable contact part and a direct current relay including same. The movable contact part comprises an upper yoke. The upper yoke generates a magnetic force that attenuates the electromagnetic repulsive force generated between a movable contact and a fixed contact. The upper yoke includes a cover part covering the movable contact from above and an arm part connected to the cover part and covering the movable contact from both sides. The arm part is thinner than the cover part. A curved portion of the arm part is shorter than the cover part and an extension portion. Thus, even though the total weight of the upper yoke is reduced, the area of the upper yoke is increased, and the thickness and length of a support part can be maintained. Consequently, the intensity of the magnetic force of the upper yoke can be enhanced.

Abstract: Disclosed are an arc path forming part and a direct current relay including the same. An arc path forming part according to an embodiment of the present disclosure comprises a plurality of magnet parts. Each magnet part is located on one side and the other side of the arc path forming part, respectively, to form a magnetic field inside an arc chamber. The arc generated inside the arc chamber is extended in a direction away from the center of the arc chamber by receiving electromagnetic force from the magnetic field. Thus, damage to each component located at the center can be prevented.

Abstract: Disclosed are a movable contact part and a direct current relay comprising same. The movable contact part, according to one embodiment of the present disclosure, comprises a lower yoke. The lower yoke forms a magnetic force for canceling an electromagnetic repulsive force generated between a movable contact and a fixed contact. The lower yoke comprises: a support part for supporting the movable contact; and a wing part connected to the support part. The wing part is formed so as to be thinner than the support part. According to one embodiment, the wing part is formed so as to be shorter than the support part. Thus, the total weight of the lower yoke is decreased, while the area of the lower yoke is increased, and the thickness and length of the support part may be maintained. Consequently, the lower yoke magnetic strength, operational reliability, and vibration or impact resistance may be improved.

Abstract: An electrode includes an electrode active material, wherein the electrode active material layer includes an electrode active material, polyvinylidene fluoride, and a conductive agent, wherein the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded to each other, and the carbon nanotube structure is included in an amount of 0.01 wt % to 0.5 wt % in the electrode active material layer. A secondary battery including the same, and a method of preparing the electrode are also provided.

Abstract: Disclosed are an arc path generation unit and a direct current relay including the same. An arc path generation unit according to various exemplary embodiments of the present disclosure comprises a Halbach array and a magnet part which form a magnetic field in a space part formed in the arc path generation unit. The magnetic field formed by the Halbach array and the magnet part forms an electromagnetic force, together with the current applied to each of fixed contacts. The electromagnetic force formed near each fixed contact is formed in a direction going away from the center of the space part, or in a direction going away from each fixed contact. Therefore, generated arcs can be rapidly suppressed and discharged through induction by the electromagnetic force.

Abstract: Disclosed are a movable contact part and a direct current relay including the same. The movable contact part according to an embodiment of the present disclosure includes an upper holder and a lower holder. One holder among the upper holder and the lower holder has a coupling protrusion that protrudes toward the other holder. The other holder among the upper holder and the lower holder has a coupling groove into which the coupling protrusion is inserted and coupled. The lower holder is coupled to the inside of a housing, and the upper holder is coupled to each of the lower holder and the housing. Accordingly, the coupling between the upper holder and the lower holder is facilitated, and the coupled state can be stably maintained.

Abstract: An arc path formation unit and a direct current relay including same are disclosed. The arc path formation unit according to various embodiments of the present disclosure comprises a Halbach array and a magnet unit, which form a magnetic field in a space part in which fixed contacts are accommodated. The formed magnetic field forms an electromagnetic force together with the current applied to the direct current relay. The formed electromagnetic force can induce generated arcs here, the electromagnetic force formed in proximity to the respective fixed contacts is formed in the direction of moving away from the respective fixed contacts. Therefore, the generated arcs do not meet each other, and thus can be effectively extinguished and discharged.

Abstract: An arc path formation unit and a direct current relay are disclosed. The arc path formation unit, according to various embodiments of the present disclosure, includes a Halbach array provided in at least one of the forward and backward directions. The Halbach array forms a magnetic field within an arc chamber by itself or along with another magnetic body. An electromagnetic force may be generated for inducing an arc that is generated by a formed magnetic field and current flowing through the direct current relay. The electromagnetic force is generated in a direction away from each fixed contact. Accordingly, the generated arc can be extinguished and discharged effectively.

Abstract: Disclosed are an arc path generation unit and a direct current relay including the same. An arc path generation unit according to various exemplary embodiments of the present disclosure comprises a Halbach array or a magnet part which forms a magnetic field in a space part for accommodating fixed contacts. The formed magnetic field forms an electromagnetic force, together with the current flowing a direct current relay. The formed electromagnetic force may induce generated arcs. The electromagnetic force formed near each fixed contact is formed in a direction going away from each fixed contact. Therefore, the generated arcs do not meet each other, and thus can be effectively suppressed and discharged.

Abstract: An arc path-forming part and a DC relay comprising same are disclosed. The arc path-forming part according to various embodiments of the present disclosure comprises a Halbach array and a magnet part that form a magnetic field in a space formed therein. The magnetic field formed by the Halbach array is stronger in the direction toward the space. The magnetic field formed by the Halbach array and the magnet part forms an electromagnetic force together with the current applied to each fixed contactor. Here, the electromagnetic force formed in the vicinity of each fixed contactor is formed in a direction away from the center of the space or in a direction away from each fixed contactor. Accordingly, a generated arc can be quickly extinguished and discharged by being induced by the electromagnetic force.

Abstract: An arc path formation unit and a direct current relay comprising same are disclosed. An arc path formation unit according to an embodiment of the present invention comprises a plurality of magnet parts. The plurality of magnet parts can form a magnetic field in a space inside an arc chamber to form an electromagnetic force for moving generated arc. The magnetic field formed by each magnet part forms an electromagnetic force toward the outside of the arc chamber. Electromagnetic forces formed adjacently to fixed contacts are formed in opposite directions. Therefore, the generated arc can be quickly moved to the outside and extinguished without damage to each constituent element of a direct current relay caused by the generated arc.

Abstract: The present invention relates to a negative electrode comprising a negative electrode current collector; and a negative electrode active material layer formed on the negative electrode current collector, wherein the negative electrode active material layer comprises a silicon-based active material, a binder, a first conductive material, and a second conductive material; a specific surface area of the second conductive material is larger than a specific surface area of the first conductive material; the first conductive material is contained in the negative electrode active material layer in an amount of 9.68% by weight to 9.83% by weight; and the second conductive material is contained in the negative electrode active material layer in an amount of 0.17 to 0.32% by weight.

Abstract: Provided is a secondary battery which includes: one or more positive electrodes including a positive electrode active material layer; a plurality of negative electrodes including a first negative electrode including a silicon-based active material and a second negative electrode including a carbon-based active material; a separator; and an electrolyte, wherein the positive electrode and the negative electrode are alternately stacked with the separators interposed therebetween, and the ratio of weight of the silicon-based active material included in the first negative electrode and weight of the carbon-based active material included in the second negative electrode is in the range of 40:60 to 90:10.

Abstract: The present invention provides a composition for forming an insulating layer for a lithium secondary battery, which includes a binder polymer; a coloring agent including at least one selected from the group consisting of an organic dye, an oil-soluble dye and an organic phosphor; and a solvent, and has a viscosity of 1,000 cP or more at 25° C.