Abstract: A cathode active material for lithium secondary batteries having a multiphase structure and a manufacturing method thereof are disclosed. The cathode active material includes a lithium oxide according to the chemical formula Li1+xMn2O4 and having a multiphase structure including at least a cation-disordered rock salt (DRX) structure. In the formula, x satisfies the relationship 0?x?0.75.

Abstract: Disclosed are a method and device for managing a project by using data filtering. A project is efficiently operated by dividing a project based on a minimum unit task and designing a plurality of child projects connected in sequential order such that a plurality of child projects proceed in order.

Abstract: A cathode material for sulfide-based all-solid-state batteries, in which Li3V2(PO4)3 (LVP) is doped with a transition metal having an oxidation number of +5 or more and the surface of the cathode material is substituted with a halogen element so as to have improved surface stability and energy density and to suppress side reactions with a solid electrolyte, a manufacturing method thereof, and an all-solid-state battery using the same.

Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.

Abstract: A cathode active material with controlled rheological properties for lithium secondary batteries. In particular, the cathode active material for a lithium secondary battery includes: a core part comprising a lithium metal oxide; and a coating layer covering at least a portion of a surface of the core part and comprising an inorganic compound.

Abstract: An embodiment regenerated cathode active material includes a first core region including a cathode active material in a layered crystal structure and a second core region enveloping a portion of the first core region, wherein the regenerated cathode active material has a first mole fraction of particles in the layered crystal structure of 0.96 to 1, has a second mole fraction of particles in a rock salt crystal structure of 0 to 0.02, and has a third mole fraction of particles in a spinel crystal structure of 0 to 0.02 based on the total cathode active material.

Abstract: Disclosed is a UWB antenna module arranged in the lateral direction of a portable terminal so as to prevent deterioration of communication performance while minimizing a mounting space. The disclosed UWB antenna module comprises: a planar base substrate; a plurality of radiation patterns arranged on the upper surface of the base substrate, and arranged so as to be spaced from each other; a switching element arranged on the lower surface of the base substrate and connected to the plurality of radiation patterns; and a communication chipset arranged to be spaced from the switching element on the lower surface of the base substrate, and connected to one of the plurality of radiation patterns through a switching operation of the switching element.

Abstract: A cathode material for sulfide-based all-solid-state batteries, in which Li3V2(PO4)3 (LVP) is doped with a transition metal having an oxidation number of +5 or more and the surface of the cathode material is substituted with a halogen element so as to have improved surface stability and energy density and to suppress side reactions with a solid electrolyte, a manufacturing method thereof, and an all-solid-state battery using the same.

Abstract: A system for controlling a compressor may include an engine controller controlling a fuel injection amount corresponding to an engine load and an opening amount of a throttle by reflecting a required torque required for an air conditioner, an operation information detector for detecting operation information according to driving state of the vehicle, a compressor generating pressure through a piston operation of a cylinder utilizing the power of the engine during operation of the air conditioner, and a controller determining an engine negative pressure of an intake manifold stored in the brake booster at a value, and when the negative pressure of intake manifold is below a first threshold value when the brake is operated, the engine enters a negative pressure recovery mode for predicting an insignificant negative pressure drop condition that falls below a second threshold value which is the A/C cut control condition and reduces the A/C duty.

Abstract: An apparatus for controlling a compressor includes: an operation information detector which detects operation information from various sensors according to an operation of a vehicle; a compressor which compresses a refrigerant for operating an air conditioner; and a controller which performs starting acceleration control of momentarily decreasing an operation rate of the compressor, which uses engine power in an acceleration situation of the vehicle, in which the controller stores a first map, in which a starting acceleration entry condition according to a driving pattern and a heat load of the vehicle is defined in a plurality of levels, sets a starting acceleration entry condition having a final level corresponding to the driving pattern according to a starting acceleration entry frequency of a driver for a predetermined unit time within a limited level range of the first map, and adjusts a starting acceleration control frequency of the compressor.

Abstract: A system for controlling a compressor may include an engine controller that controls a fuel injection amount corresponding to an engine load and an opening amount of a throttle by reflecting a required torque required for an air conditioner (A/C), an operation information detector for detecting operation information according to driving state of the vehicle, a compressor that generates pressure during operation of the A/C, an air conditioner relay which is turned on when the air conditioner operates and is turned off when the A/C is stopped, and a controller which determines an engine negative pressure of an intake manifold, and when the cooling water temperature is lower than the predetermined temperature and the intake manifold pressure is lower than the first threshold value, a cold-start intake manifold negative pressure insufficient event is generated to reduce the A/C duty in accordance with the entry into a negative pressure recovery mode.

Abstract: A method for natural ventilation of a vehicle interior includes steps of: determining, by a controller, formation of an interior negative pressure in an interior space while driving of a vehicle is maintained as an internal air mode, determining, by the controller, an over-production of a harmful gas in an exhaust gas using an air-to-fuel ratio or an Accelerator Position Scope (APS), in an air conditioning system; regarding satisfaction of the formation of the interior negative pressure and satisfaction of the over-production of the harmful gas as an entry condition and mixing an exterior air into the interior space so as to mitigate the interior negative pressure in the internal air mode; and after mixing the exterior air, regarding the non-satisfaction of the over-production of the harmful gas as a cancellation condition and blocking the exterior air.

Abstract: A system for controlling a compressor may include an engine controller that controls a fuel injection amount corresponding to an engine load and an opening amount of a throttle by reflecting a required torque required for an air conditioner (A/C), an operation information detector for detecting operation information according to driving state of the vehicle, a compressor that generates pressure during operation of the A/C, an air conditioner relay which is turned on when the air conditioner operates and is turned off when the A/C is stopped, and a controller which determines an engine negative pressure of an intake manifold, and when the cooling water temperature is lower than the predetermined temperature and the intake manifold pressure is lower than the first threshold value, a cold-start intake manifold negative pressure insufficient event is generated to reduce the A/C duty in accordance with the entry into a negative pressure recovery mode.

Abstract: A system for controlling a compressor may include an engine controller controlling a fuel injection amount corresponding to an engine load and an opening amount of a throttle by reflecting a required torque required for an air conditioner, an operation information detector for detecting operation information according to driving state of the vehicle, a compressor generating pressure through a piston operation of a cylinder utilizing the power of the engine during operation of the air conditioner, and a controller determining an engine negative pressure of an intake manifold stored in the brake booster at a value, and when the negative pressure of intake manifold is below a first threshold value when the brake is operated, the engine enters a negative pressure recovery mode for predicting an insignificant negative pressure drop condition that falls below a second threshold value which is the A/C cut control condition and reduces the A/C duty.

Abstract: An apparatus for controlling a compressor includes: an operation information detector which detects operation information from various sensors according to an operation of a vehicle; a compressor which compresses a refrigerant for operating an air conditioner; and a controller which performs starting acceleration control of momentarily decreasing an operation rate of the compressor, which uses engine power in an acceleration situation of the vehicle, in which the controller stores a first map, in which a starting acceleration entry condition according to a driving pattern and a heat load of the vehicle is defined in a plurality of levels, sets a starting acceleration entry condition having a final level corresponding to the driving pattern according to a starting acceleration entry frequency of a driver for a predetermined unit time within a limited level range of the first map, and adjusts a starting acceleration control frequency of the compressor.

Abstract: A method for natural ventilation of a vehicle interior includes steps of: determining, by a controller, formation of an interior negative pressure in an interior space while driving of a vehicle is maintained as an internal air mode, determining, by the controller, an over-production of a harmful gas in an exhaust gas using an air-to-fuel ratio or an Accelerator Position Scope (APS), in an air conditioning system; regarding satisfaction of the formation of the interior negative pressure and satisfaction of the over-production of the harmful gas as an entry condition and mixing an exterior air into the interior space so as to mitigate the interior negative pressure in the internal air mode; and after mixing the exterior air, regarding the non-satisfaction of the over-production of the harmful gas as a cancellation condition and blocking the exterior air.

Abstract: A method and an apparatus for controlling a compressor are provided. The method includes measuring a vehicle speed, an engine speed, a position value of an accelerator pedal, and an external air temperature and comparing the vehicle speed with a predetermined speed. A basic operation rate of the compressor is then determined based on the engine speed and the position value of the accelerator pedal when the vehicle speed is equal to or less than the predetermined speed. A final operation rate of the compressor is determined based on the external air temperature and the determined basic operation rate and the compressor is operated based on the determined final operation rate.

Abstract: A compressor control apparatus may include a data detector detecting status data including at least one of vehicle speed, engine speed, accelerator pedal location value, and slope way measurement value; and controller that determines whether engine speed and accelerator pedal location value of the status data satisfy oscillation acceleration entering condition, if the vehicle speed exists in predetermined range and that sets basic operation rate of compressor according to the engine speed and the accelerator pedal location value, if engine speed and accelerator pedal location value of the status data satisfy oscillation acceleration entering condition and that generates final operation rate of the compressor using the basic operation rate, slope way constant according to the slope way measurement value, and air temperature compensation constant according to air temperature and that controls operation of the compressor based on the final operation rate.

Abstract: A compressor control apparatus may include a data detector detecting status data including at least one of vehicle speed, engine speed, accelerator pedal location value, and slope way measurement value; and controller that determines whether engine speed and accelerator pedal location value of the status data satisfy oscillation acceleration entering condition, if the vehicle speed exists in predetermined range and that sets basic operation rate of compressor according to the engine speed and the accelerator pedal location value, if engine speed and accelerator pedal location value of the status data satisfy oscillation acceleration entering condition and that generates final operation rate of the compressor using the basic operation rate, slope way constant according to the slope way measurement value, and air temperature compensation constant according to air temperature and that controls operation of the compressor based on the final operation rate.

Abstract: A method and an apparatus for controlling a compressor are provided. The method includes measuring a vehicle speed, an engine speed, a position value of an accelerator pedal, and an external air temperature and comparing the vehicle speed with a predetermined speed. A basic operation rate of the compressor is then determined based on the engine speed and the position value of the accelerator pedal when the vehicle speed is equal to or less than the predetermined speed. A final operation rate of the compressor is determined based on the external air temperature and the determined basic operation rate and the compressor is operated based on the determined final operation rate.