Abstract: The present invention provides a battery monitoring method, which is performed by a battery monitoring device, including: measuring a first voltage drop across both ends of a first shunt resistor of a bus bar electrically connected to a battery and a second voltage drop across both ends of a second shunt resistor, which is in parallel or serial connection with the first shunt resistor; calculating a first current and a second current flowing, respectively, through the first shunt resistor and the second shunt resistor using a first voltage drop value and a second voltage drop value; and determining a state of the battery using a difference between a first current value and a second current value. According to the present invention, it is possible to increase the reliability of monitoring information related to the battery's state by utilizing current values that have undergone linearity compensation and temperature compensation.

Abstract: The present invention relates to: a pyrene derivative compound having a specific structure; and a high efficiency organic light-emitting device employing the pyrene derivative compound in a light emitting layer and thus having excellent light-emitting characteristics. The organic light-emitting device according to the present invention can be configured as a high efficiency organic light-emitting device having excellent light-emitting characteristics by employing the pyrene derivative compound having the specific structure as a host in the light emitting layer, and thus can be usefully applied industrially in lighting devices, as well as various display devices such as flat, flexible, and wearable displays.

Abstract: The present disclosure relates to a printed circuit board including a first insulating layer, a pad embedded in an upper portion of the first insulating and having an upper surface portion, a side surface portion, and a lower surface portion, where a portion of the upper surface portion and a portion of the side surface portion protrude from the upper surface of the first insulating layer, and a metal layer covering the portion of the upper surface portion, the portion of the side surface portion, and a portion of the lower surface portion of the pad.

Abstract: A fuel cell vehicle includes a fuel cell stack and a battery; an air compressor that supplies air to the fuel cell stack and is able to generate power during regenerative braking; a drive motor that provides driving force to a vehicle and is able to generate power during the regenerative braking; and a controller that controls operation of the air compressor so that a sum of power generation of the fuel cell stack and power generation of the regenerative braking of the air compressor and drive motor is close to a chargeable amount of the battery.

Abstract: A matting agent-free matt metallic steel sheet for a home appliance, including a primer layer formed on the steel sheet, a basecoat layer formed on the primer layer, a print layer formed on the basecoat layer, and a clearcoat layer formed on the print layer, wherein the clearcoat layer includes an acrylic resin having a weight average molecular weight Mw range of 70,000 to 100,000.

Abstract: A method of manufacturing a binder-free electrode includes hydrothermally synthesizing a transition metal oxide-based active material on a 3D porous substrate; and using electrothermal waves on the substrate on which the transition metal oxide-based active material is hydrothermally synthesized. Consequently, a transition metal oxide/conductive substrate composite can be synthesized within a few seconds.

Abstract: A multilayer electronic component including: a body including a dielectric layer and internal electrodes; and external electrodes disposed outside the body and connected to the internal electrodes, wherein 1.5?Hfs/Hfc?5.0 when the internal electrode includes hafnium (Hf), Hfc indicates an average Hf content (at %) in a center of the internal electrode, and Hfs indicates an average Hf content (at %) in the internal electrode, measured from the center of the internal electrode to an interface thereof in contact with the dielectric layer.

Abstract: According to an embodiment of the disclosure, an ultrasonic probe may be provided, the ultrasonic probe including a first housing, a second housing coupled to the first housing, an acoustic module at least partially arranged in the first housing and including a transducer and a lens portion, the transducer being capable of converting an ultrasonic signal and an electrical signal, and the lens portion being capable of changing a path of the ultrasonic signal, a first connector connected to an inner surface of the first housing, and a second connector at least partially arranged in the second housing and connected to the first connector, wherein the first connector is configured to connect the second connector and the first housing to each other, such that the first housing is coupled to the second housing.

Abstract: A PCM steel sheet for a home appliance and a refrigerator including the same. The PCM steel sheet may include a steel sheet, a basecoat layer provided on the steel sheet, a hairline layer formed on the basecoat layer, a clearcoat layer provided on the hairline layer, and a primer layer between the steel sheet and the basecoat layer to provide adhesion. The PCM steel sheet for a home appliance does not include a metal mesh layer. The PCM steel sheet for a home appliance may have a brightness (flop index) of about 20 or more.

Abstract: A substrate transfer system capable of performing efficient distribution exchange between fabricating facilities is provided. The substrate transfer system includes a lower rail, an upper rail which is located above the lower rail from a ground plane, and extends to be parallel to the lower rail, a conveyor which extends to intersect the lower rail and the upper rail, below the lower rail, a first lower transport unit which transports a first carrier along the lower rail and unloads the first carrier onto the conveyor, and a first upper transport unit which transports a second carrier along the upper rail and unloads the second carrier onto the conveyor, wherein the conveyor includes a linear module which moves the first carrier and the second carrier in a linear direction, and a turning module which turns the first carrier and the second carrier.

Abstract: A battery module includes a module housing with a simplified assembling process and an improved energy density. The battery module includes a battery assembly configured to include a plurality of secondary batteries and has front, rear, upper, lower, left and right sides; and a module housing including a first frame located at the left side of the battery assembly and having a plate shape with opposing ends bent rightward so that bent portions thereof are respectively located at the upper side and the lower side of the battery assembly, and a second frame located at the right side of the battery assembly and having a plate shape with opposing ends bent leftward so that bent portions thereof are respectively located at the upper side and the lower side of the battery assembly and are coupled with the bent portions of the first frame, respectively.

Abstract: A quantum dot including a core comprising a first semiconductor nanocrystal including a zinc chalcogenide and a semiconductor nanocrystal shell disposed on the surface of the core and comprising zinc, selenium, and sulfur. The quantum dot does not comprise cadmium, emits blue light, and may exhibit a digital diffraction pattern obtained by a Fast Fourier Transform of a transmission electron microscopic image including a (100) facet of a zinc blende structure. In an X-ray diffraction spectrum of the quantum dot, a ratio of a defect peak area with respect to a peak area of a zinc blende crystal structure is less than about 0.8:1. A method of producing the quantum dot, and an electroluminescent device including the quantum dot are also disclosed.

Abstract: Provided is a hologram transcription apparatus including: an exposure part; and a light source part for irradiating light to the exposure part. Here, the exposure part includes a transfer unit for transferring a hologram film, and the exposure part is rotatable to change an angle formed with the light.

Abstract: A systems and methods for tracking a position of an electrode. The system may include: a notching controller configured to store pitch information of a unit electrode and to acquire electrode coordinate information of the electrode in a roll-to-roll state during a notching process and a cell identification (ID) of the unit electrode; a calculator configured to calculate coordinates of the cell ID from the pitch information and the cell ID; a roll map generator configured to generate a roll map based on the electrode coordinate information transmitted from the notching controller; and a mapping part configured to compare the coordinates of the roll map with the coordinates of the cell ID to derive an electrode position of the electrode during the electrode manufacturing process from which the unit electrode originates.

Abstract: Cathodes and lithium secondary batteries including the cathodes are disclosed. In some implementations, a cathode may include a cathode current collector and a cathode active material layer disposed on the cathode current collector and including cathode active material particles such that the cathode active material layer satisfies a specific equation. The cathode active material particles may include lithium metal oxide particles that include nickel, and may have a mole fraction of cobalt of 0.02 or less with respect to all elements except for lithium and oxygen.

Abstract: A method for producing a lead-free X-ray shielding material using a bismuth halide compound is provided, the method including a first step of producing porous PDMS (Polydimethylsiloxane); a second step of producing a mixed solution of the bismuth halide compound and THF; and a third step of immersing the porous PDMS into the mixed solution such that the bismuth halide compound is loaded into the porous PDMS to produce a bismuth halide compound-PDMS composite material.

Abstract: An apparatus for generating a roll map of a merge-wound electrode includes a position measurement device configured to acquire coordinate value data for a longitudinal position of an electrode according to an amount of rotation of the rewinder. The apparatus includes an input device configured to input an input signal indicating a start of merge-winding or an end of merge-winding, a seam detector configured to detect a seam, a reference point detector configured to detect a plurality of reference points of the merge-wound electrode, and a roll map generator configured to generate a roll map for simulating the merge-wound electrode moving in a roll-to-roll state based on the input signal of the input device, and to display the longitudinal coordinate values of the electrode, the electrode coordinate values of the seam, and the electrode coordinate values of the plurality of reference points of the merge-wound electrode on the roll map.

Abstract: An organic light-emitting device according to the present invention uses a pyrene derivative compound having a characteristic structure as a host in a light-emitting layer to realize a long-lifespan and high-efficiency organic light-emitting device having excellent light-emitting characteristics in terms of lifespan and luminescence efficiency. Accordingly, the organic light-emitting device can be usefully applied, in the industrial aspect, for various display devices such as flat panel, flexible, and wearable displays, as well as lighting devices.