Abstract: To check insulation of a pouch electric cell, probes are contacted to an electrode of a pouch electric cell and an aluminum layer of a pouch of the pouch electric cell, respectively, and then an electric characteristic value between the probes is measured. The probe contacted with the aluminum layer has a contact portion made of conductive elastic material. Also, insulation of the pouch electric cell is determined by comparing the measured electric characteristic value with a reference value. Thus, physical characteristics of an outer periphery of a flexible pouch may be sufficiently exhibited in measuring or checking insulation of a pouch electric cell such as insulation resistance, thereby improving reliability of electric contact and minimizing physical damage or deformation of the pouch electric cell.

Abstract: A semiconductor integrated circuit includes first power supply through-chip vias formed through the semiconductor chip to be in a line in a first direction of the semiconductor chip, second power supply through-chip vias formed through the semiconductor chip to be in, first power lines arranged in a second direction, wherein each of the plurality of first power lines is coupled to each of the first power supply through-chip vias, and second power lines arranged in the second direction, wherein each of the plurality of second power lines is coupled to each of the second power supply through-chip vias.

Abstract: An apparatus estimates SOH of a battery based on a battery voltage variation pattern. A data storing unit obtains and stores battery voltage, current and temperature data from sensors, at each SOH estimation. A first SOC estimating unit estimates first SOC by current integration using the battery current data. A second SOC estimating unit estimates open-circuit voltage from the voltage variation pattern, and calculates and stores second SOC corresponding to the open-circuit voltage and temperature using correlations between the open-circuit voltage/temperature and SOC. A weighted mean convergence calculating unit calculates and stores convergence value for weighted mean value of ratio of the second SOC variation to the first SOC variation. A SOH estimating unit estimates capacity corresponding to the weighted mean convergence value using correlation between the weighted mean convergence value and the capacity, estimates relative ratio of the estimated capacity to an initial capacity, and stores it as SOH.

Abstract: An apparatus for estimating resistance characteristics of a battery includes a data storing manager for obtaining and storing battery voltage, current and temperature data of a battery, whenever estimating a battery resistance characteristic; an open circuit voltage calculator for calculating battery open circuit voltage from a battery voltage variation pattern measured at the present and in the past; a weighted mean resistance calculator for calculating a battery resistance parameter from a battery current and a difference between the battery open circuit voltage and a battery voltage, and calculating a weighted mean resistance from battery resistance parameters calculated at the present and in the past; a weighted mean resistance convergence calculator for calculating a weighed mean resistance convergence value by repeatedly calculating a weighted mean sequence using the weighted mean resistance as an initial condition; and a resistance characteristic estimator for estimating a battery resistance from the w

Abstract: The present invention relates to a graphene composition having liquid crystalline properties and a preparation method thereof, and more particularly to a graphene composition wherein graphene having useful electrical properties is uniformly dispersed in a medium, whereby it is chemically and physically stable, exhibits a liquid crystal phase in a wide temperature range and has good compatibility with other compounds, and to a preparation method thereof. In the graphene composition, liquid crystalline properties are imparted to graphene, which can be produced in large amounts and has excellent mechanical, chemical and electrical properties, and thus the graphene composition can provide a chance to apply functional carbon materials in various fields, including nanocomposites, energy storage materials, and photonics.

Abstract: An apparatus for managing a battery pack for a vehicle includes a temperature measurement module for measuring temperature of the battery pack; a current measurement module for measuring a charge/discharge current of the battery pack when the measured temperature is not within a predetermined temperature range; a time measurement module for measuring the time while the measured charge/discharge current is over a predetermined current value; a storage module for accumulating and storing the measured time; and a control module for determining a state of the battery pack according to the accumulated and stored time and providing the state information to a user.

Abstract: Provided is an apparatus for measuring current and voltage of a secondary battery pack in synchronization manner, comprising a voltage measurement circuit for periodically measuring and outputting the level of a charging voltage of each of a plurality of battery cells contained in a battery pack; a current measurement circuit for periodically measuring and outputting the level of current flowing into or out of the battery pack; and a control unit for synchronizing a time difference between a current measurement time point of the battery pack and a voltage measurement time point of each battery cell with a reference delay time.

Abstract: An apparatus balances a charging voltage of each battery cell of a battery pack. The apparatus includes a discharge resistor installed on a conductive line connected to both ends of a battery cell in parallel; a balance signal relay unit for relaying a charging voltage of the battery cell according to a balance control signal; and a discharge switching unit for receiving the relayed charging voltage of the battery cell as a driving voltage and connecting the battery cell to the discharge resistor to discharge the battery cell if the driving voltage is over an effective voltage level. This apparatus prevents overcharging of a battery cell, caused by a failure of a control processor, while balancing a charging voltage of battery cells. Also, the control processor may be protected against an electric impact by electrical insulation from a discharge circuit. Accordingly, the safety of the battery pack is improved.

Abstract: Disclosed herein is a voltage sensing member for sensing the voltage of battery cells constituting a battery module, the voltage sensing member comprising: (a) a pair of supporting parts mounted to the bottom of the battery module at regions (the front and rear parts of the battery module) corresponding to electrode terminal connections of the battery cells; (b) connection parts for electrically connecting the supporting parts to a connector; (c) a plurality of conductive sensing parts protruding upward while one end of each linear mounting part is connected to the corresponding support part and the other end of each linear mounting part is elastically connected to electrode terminals of the battery cells; and (d) a connector mounted on the front part or the rear part of the battery module for transmitting the sensed voltage of the battery cells to a battery management system (BMS).

Abstract: An apparatus for estimating resistance characteristics of a battery includes a data storing manager for obtaining and storing battery voltage, current and temperature data of a battery, whenever estimating a battery resistance characteristic; an open circuit voltage calculator for calculating battery open circuit voltage from a battery voltage variation pattern measured at the present and in the past; a weighted mean resistance calculator for calculating a battery resistance parameter from a battery current and a difference between the battery open circuit voltage and a battery voltage, and calculating a weighted mean resistance from battery resistance parameters calculated at the present and in the past; a weighted mean resistance convergence calculator for calculating a weighed mean resistance convergence value by repeatedly calculating a weighted mean sequence using the weighted mean resistance as an initial condition; and a resistance characteristic estimator for estimating a battery resistance from the w

Abstract: The present invention relates to a polarizer having an antistatic layer and a liquid crystal display. The present invention may provide a polarizer which may prevent malfunction of devices by static electricity generated in preparation or use procedures even without using the ITO layer conventionally formed between the upper glass substrate of a liquid crystal panel and a polarizer in a liquid crystal display for an antistatic purpose, and has excellent physical properties such as endurance reliability under high temperature or high humidity condition and optical characteristics, and a liquid crystal display thereof.

Abstract: A method of providing a push service to an AT and a push server apparatus using the same to facilitate a data receiving service comprising reception of paging messages at the AT in a mobile communication system for high-speed data transmission are provided. The mobile communication system comprises at least one DLR for allocating a UATI to the AT when a communication is connected to the AT, a home DLR for storing the ID of the AT with respect to the identification information of the DLR, a PDSN for establishing a PPP session with the AT, a DNS, and a push server for buffering push data for the AT received from a CN and requesting paging of the AT for push data transmission to the AT from which the PPP session has been terminated.

Abstract: A bedsore prevention mattress is disclosed, which can effectively prevent a bedsore of a patient who uses a bed or the like for a long time by circulating air while raising a portion directly contacting with a back, waist or shoulder of a patient. The bedsore prevention mattress comprises a plurality of air cylinder apparatuses each equipped with a vertically installed cylinder body, a piston rod which is engaged to each cylinder body and moves up and down, and a contact means which is engaged to an upper side of the piston rod and contacts with a patient's back; an air supply apparatus for supplying a high pressure air to each air cylinder apparatus; an air supply tube H which connects each air cylinder apparatus and the air supply apparatus; and a control unit C which controls the operations of the air supply apparatus and the air cylinder apparatus.

Abstract: Disclosed are a method and an apparatus for detecting abnormality of a current sensor operative to measure a charge or discharge current of a battery pack. The method comprises measuring current and voltage of the battery pack; and detecting abnormality of the current sensor by comparing variations in current and voltage over a predetermined time with a current reference value and a voltage reference value, respectively. According to the present invention, it is capable of improving reliability of the battery pack, and in case that the current sensor is out of order, of protecting the battery pack from dangerous accidents such as explosion.

Abstract: Disclosed is a relay control apparatus and method for electric drive vehicles. The apparatus controls turn-off of a relay operative to connect an electric drive unit with a battery pack for supplying electrical power to the electric drive unit, and comprises a current sensor for measuring and outputting a residual current flowing between the battery pack and the electric drive unit; and a controller for, in a situation requiring turn-off of the relay, receiving the measured residual current value, comparing the measured residual current value with a reference value for the residual current, and controlling to maintain the ON-state of the relay or to turn off the relay on the basis of the comparison results. Accordingly, it prevents a relay of electric drive vehicles from being damaged due to over-current such as a surge current, at the time of turning off the relay.

Abstract: There is provided a method for preparing a natural cellulose-AgO matrix having antimicrobial activity without leaching silver from the cellulose-AgO matrix. The method comprises: introducing silver ions (Ag+) into a natural cellulose matrix by dipping the natural cellulose matrix in an AgCl-dissolved NH4OH solution; and substituting hydrogen (H) of hydroxyl group (—OH) in natural cellulose with Ag+ by drying the silver ion-infused natural cellulose matrix, thus to form a natural cotton-AgO complex. The cellulose-AgO matrix prepared in the method may be useful to continuously maintain antimicrobial activity by maintaining an effective concentration of silver, which does not have cytotoxicity to human skin, and chemically bonded silver is not leached during the rehydration due to the chemical bond between the silver and the cellulose matrix.

Abstract: The present invention provides a coating composition and a coating film that comprises a binder containing a UV-curable functional group, a compound containing a fluorine UV-curable functional group, a photoinitiator; and nano-sized particles. The coating film according to the present invention has excellent abrasion resistance and contamination resistance such as fingerprint trace removability and scribbling resistance.

Abstract: An apparatus balances a charging voltage of each battery cell of a battery pack. The apparatus includes a discharge resistor installed on a conductive line connected to both ends of a battery cell in parallel; a balance signal relay unit for relaying a charging voltage of the battery cell according to a balance control signal; and a discharge switching unit for receiving the relayed charging voltage of the battery cell as a driving voltage and connecting the battery cell to the discharge resistor to discharge the battery cell if the driving voltage is over an effective voltage level. This apparatus prevents overcharging of a battery cell, caused by a failure of a control processor, while balancing a charging voltage of battery cells. Also, the control processor may be protected against an electric impact by electrical insulation from a discharge circuit. Accordingly, the safety of the battery pack is improved.

Abstract: A lignocellulose-based anion-adsorbing medium (LAM) and process for making and using same for selectively removing phosphates and arsenic contaminants from aqueous solutions is disclosed. Making the LAM comprises (a) dissociating cations such as Fe and Al, from their counterions by adding a chemical compound containing said cations to water and acidifying; (b) pelletizing a lignocellulose; (c) adsorbing the cations to the lignocellulose by bringing the lignocellulose into contact with the solution of step (a) and incubating; and, (d) exposing the lignocellulose of step (c) to an alkaline fixing agent to replace hydrogens (H) of the hydroxyl groups of the lignocellulose with the adsorbed cations to produce the LAM with a positive charge. The LAM may be used to selectively and cost-effectively remove phosphate and arsenic contaminants from aqueous solutions by retaining them at the Fe or Al on the LAM.

Abstract: An apparatus for testing online performance on a client/server architecture, includes: a client group connected to a server group; and a server group for providing the online service to the client group and capturing packet information based on communication with the client group. Further, the apparatus for testing online performance on a client/server architecture includes a central management unit for carrying out analysis, edition, and scripting for the captured packet information to overall manage an online performance test between the client group and the server group; and a load generation unit for generating a virtual client in accordance with the scripting result of the central management unit to regenerate a load in the server group.