Abstract:
Disclosed therein is a spring tube winding machine including: a winding roller (10) formed in a cylindrical shape to wind a first rubber sheet (T1), a first code topping paper (C1), a second code topping paper (C2) and a second rubber sheet (T2), which are the spring tube materials, in order, the winding roller (10) including an uneven portion (12) formed on the outer circumferential surface thereof, a nozzle (14) disposed at an end for injecting compressed air, and a plurality of discharge holes (16) for ejecting compressed air injected through the nozzle (14) outwardly from the inside; and a table (20) having a reference line (22) for setting a seating angle in such a fashion that the spring tube materials wound on the winding roller (10) are seated in an unfolded state and the codes (C) embedded in the first code topping paper (C1) and the second code topping paper (C2) are intersected with each other. The spring tube materials are seated at correct positions and wound on the winding roller through the reference lines marked on the table so as to be exactly arranged at the preset code intersection angle, and so, the spring tube winding machine can keep even quality of the spring tube and even buffering force. Moreover, the spring tube winding machine enables the spring tube materials to be easily removed from the winding roller after completion of the stacking and winding process because the discharge hole is formed to spray the compressed air in the outward direction from the inside.
Abstract:
Disclosed therein is a spring tube melting machine of an air suspension system. The spring tube melting machine includes an inner molding part (100) and an outer molding part (200), which can mold an integrated spring tube by compressing half-finished spring tube materials at high temperature in order prevent bad molding due to the remaining air and overlap of spring tube materials and simplify maintenance due to repeated use.
Abstract:
Disclosed is a separator. The separator includes a planar non-woven fabric substrate having a plurality of pores, and a porous coating layer formed on at least one surface of the non-woven fabric substrate. The porous coating layer is composed of a mixture of filler particles and a binder polymer. The filler particles include conductive positive temperature coefficient (PTC) particles composed of a mixture of conductive particles and a low melting point resin having a melting point lower than that of the non-woven fabric substrate. Due to the presence of the conductive PTC particles, the porous coating layer can be imparted with a shutdown function against thermal runaway. In addition, the porous coating layer exhibits appropriate electrical conductivity. Therefore, the separator is suitable for use in a high-capacity electrochemical device.
Abstract:
A digital broadcasting system and method, where the digital broadcasting system includes: a transmission stream generator multiplexing a normal stream and a turbo stream to generate a dual transmission stream; a transmitter inserting an supplementary reference signal (SRS) into the dual transmission stream, processing the turbo stream to reconstitute the dual transmission stream, and outputting the reconstituted dual transmission stream; and a receiver receiving the reconstituted dual transmission stream, separately turbo decoding the turbo stream, inserting the turbo decode turbo stream into the dual transmission stream, and decoding the dual transmission stream into which the turbo decoded turbo stream has been inserted, to restore normal stream data and turbo stream data. Thus, reception sensitivity of a digital broadcasting signal can be efficiently improved.
Abstract:
The present invention relates to a separator comprising a porous substrate; and a porous coating layer formed on at least one surface of the porous substrate and comprising a mixture of first inorganic particles coated with a coupling agent on the surface thereof, second inorganic particles coated with a coupling agent on the surface thereof and a binder polymer, the first inorganic particles having an average diameter of 1 to 10 μm and the second inorganic particles having an average diameter of 50 to 500 nm. In accordance with the present invention, a separator having a porous coating layer comprising two kinds of inorganic particles which are coated with a coupling agent is manufactured to minimize a mechanochemical reaction, thereby inhibiting the production of unnecessary substances, and to easily introduce functional particles.
Abstract:
Disclosed is a method for manufacturing a separator. The method includes (S1) preparing a slurry containing inorganic particles dispersed therein and a solution of a binder polymer in a solvent, and coating the slurry on at least one surface of a porous substrate to form a first porous coating layer, and (S2) electroprocessing a polymer solution on the outer surface of the first porous coating layer to form a second porous coating layer. The first porous coating layer formed on at least one surface of the porous substrate is composed of a highly thermally stable inorganic material to suppress short-circuiting between an anode and a cathode even when an electrochemical device is overheated. The second porous coating layer formed by electroprocessing improves the bindability of the separator to other base materials of the electrodes.
Abstract:
A jelly-roll type electrode assembly is disclosed. The jelly-roll type electrode assembly includes an anode, a cathode, and separators interposed between the anode and the cathode and having a greater length than width. Each of the separators is longer than the anode and the cathode. Each of the separators has a porous substrate and porous coating layers formed on both surfaces of the porous substrate. The porous coating layers include a mixture of inorganic particles and a binder polymer. The porous coating layers are formed only in areas where the separators are in contact with the anode and the cathode. The porous coating layers enhance the heat resistance of the separators. Due to the enhanced heat resistance, the separators can prevent the performance of a battery from deteriorating. In addition, the porous coating layers can be prevented from being separated from the separators during battery assembly processing.
Abstract:
A digital broadcast transmitting/receiving system, and a signal processing method thereof, includes a randomizer for randomizing a transport stream into a specified position of which stuff bytes are inserted, a stuff-byte exchanger for replacing the stuff bytes included in data output from the randomizer with specified known data, an RS encoder for performing an RS-encoding of data output from the stuff-byte exchanger, an interleaver for interleaving data output from the RS encoder, a trellis encoder for performing a trellis encoding of data output from the interleaver, an RS parity generator for generating a parity by performing an RS encoding of data output from the RS encoder, and outputting the generated parity to the trellis encoder, and a modulator/RF converter for modulating data output from the trellis encoder and performing an RF up-converting of the modulated data. The digital broadcast receiving performance can be improved even in an inferior multi-path channel by detecting the known data from the received signal and using the known data for synchronization and equalization in a digital broadcast receiver.
Abstract:
Disclosed therein is a spring tube winding machine including: a winding roller (10) formed in a cylindrical shape to wind a first rubber sheet (T1), a first code topping paper (C1), a second code topping paper (C2) and a second rubber sheet (T2), which are the spring tube materials, in order, the winding roller (10) including an uneven portion (12) formed on the outer circumferential surface thereof, a nozzle (14) disposed at an end for injecting compressed air, and a. plurality of discharge holes (16) for ejecting compressed air injected through the nozzle (14) outwardly from the inside; and a table (20) having a reference line (22) for setting a seating angle in such a fashion that the spring tube materials wound on the winding roller (10) are seated in an unfolded state and the codes (C) embedded in the first code topping paper (C1) and the second code topping paper (C2) are intersected with each other. The spring tube materials are seated at correct positions and wound on the winding roller through the reference lines marked on the table so as to be exactly arranged at the preset code intersection angle, and so, the spring tube winding machine can keep even quality of the spring tube and even buffering force. Moreover, the spring tube winding machine enables the spring tube materials to be easily removed from the winding roller after completion of the stacking and winding process because the discharge hole is formed to spray the compressed air in the outward direction from the inside.
Abstract:
An orthogonal frequency division multiplexing (OFDM) signal transmission apparatus and a method thereof are disclosed. The OFDM signal transmission apparatus includes an inverse Fourier transform (IFT) unit for transforming a frequency domain OFDM signal to a time domain OFDM signal according to one of transmission modes of 4K, 16K, and 32K; a guard interval inserting unit for inserting a guard interval into the transformed time domain OFDM signal according to a predetermined guard interval inserting rate; and a transmitting unit for transmitting the OFDM signal having the guard interval. Therefore, the data transmission rate is enhanced.