Abstract: The present invention relates to a multiband antenna comprising: a reflector providing a ground plane; a first radiation module for a first frequency band, provided on the reflector; and a plurality of second radiation modules for a second frequency band, laminated on the first radiation module, wherein: the first radiation module includes first to fourth radiation elements symmetrically combined in four directions on an entire plane, wherein each of the first to fourth radiation elements includes a radiation arm in a cup shape and a support for supporting and fixing the radiation arm to the reflector, and the second radiation modules are provided to each radiation arm of the first to fourth radiation elements, wherein the lower surface of the cup shape of each radiation arm of the first to fourth radiation elements is designed to have a predetermined area for providing the ground plane to the second radiation modules.

Abstract: The present invention relates to a multi-band, multi-polarized wireless communication antenna, which comprises: a reflector; at least one first radiation module of a first band which is installed on the reflector; and at least one second or third radiation module of a second band or a third band installed on the reflector, wherein the first radiation module comprises first to fourth radiating elements having a dipole structure, the first to fourth radiating elements are configured such that every two radiating arms thereof are connected in the shape of letter “”, one of the two radiating arms is configured to be placed side by side along side of the reflector, and the second or third radiation module is installed to be included within an installation range of the first radiation module.

Abstract: Provided is a secondary battery management system and method for exchanging information in a multi-pack parallel structure using the same, and more particularly, to a secondary battery management system and method for exchanging information in a multi-pack parallel structure using the same, including: a unit battery cell; a battery module in which a plurality of unit battery cells are disposed; and a voltage temperature management system (VTMS) generates a state information and generates a diagnosis information of battery module or the unit battery cells using unit battery cell information for the unit battery cells.

Abstract: A SOC correcting system in a parallel structure of multiple packs in which a plurality of sub-packs having serially connected cells are connected in parallel. The system includes sub BMSs connected to each of the sub-packs a main BMS connected to each of the sub BMSs to collect the SOCs calculated in each of the sub BMSs and to transmit a final SOC to a vehicle SOC to a vehicle controller. When an average SOC to each SOC of the sub-packs is less than 50%, the main BMS determines a minimum value among the SOCs of the sub-packs as a final SOC, and when the average SOC to each SOC of the sub-packs is 50% or more, the main BMS determines a maximum value among the SOCs of the sub-packs as a final SOC.

Abstract: The present invention relates to an antenna for a mobile-communication base station and includes a reflective plate, and a first radiant element having a first frequency band formed on the reflective plate, wherein the first radiant element includes: a slot structure that is formed as a letter “X” hole directly in the entire reflective plate and generates a transmission signal having X-shaped dual polarizations that are orthogonal to each other, and a metallic patch plate that is installed on the top of the slot structure so as to be insulated from the reflective plate.

Abstract: Provided are a charge equalization apparatus and method for a battery string connected in series, and more particularly, are a charge equalization apparatus and method that efficiently perform charge equalization while reducing entire complexity and volume and lowering production costs through a configuration that an individual battery included in a battery string shares a single voltage sensing module and a single charge equalizing module; a switch block of a two-stage structure forms a current path for measuring voltage of individual batteries included in the battery string, and at the same time, forms a charging or discharging path of a low-charged or over-charged battery among the battery strings; and a switch device having low withstand voltage is used.

Abstract: The present invention relates to a battery management apparatus of a high voltage battery for a hybrid vehicle, in more detail, a battery management apparatus of a high voltage battery for a hybrid vehicle which includes: a plurality of battery packs including a plurality of unit cells; slave battery management modules measuring and monitoring temperature and voltage of the unit cells in the battery packs; temperature/voltage measurement wires connecting the unit cells with adjacent unit cells for the slave battery management modules to measure temperature and voltage between the unit cells and the adjacent unit cells; a master battery management module connected with the slave battery management modules; and communication wires connecting the modules.

Abstract: Provided is an insulation resistance measuring circuit including: a source resistor unit including a first source resistor connected between a positive terminal of a battery and a second source resistor and the second source resistor connected between a negative terminal of the battery and the first source resistor; a voltage sensing unit sensing a voltage of the first source resistor as a first voltage and sensing a voltage of the second source resistor as a second voltage; and an insulation resistance measuring unit measuring an insulation resistance of the battery through a value obtained by dividing a difference between the first and second voltages by a sum between the first and second voltages.

Abstract: A two-stage charge equalization apparatus for a series-connected battery string having a two-stage DC-DC converter including a first DC-DC converter; and a second DC-DC converter which is inputted. A battery string is divided into one or more battery modules having a plurality of battery cells connected in series, and a current conversion switch module forms a path of the charge current between the battery module and the second DC-DC converter to allow the charge current to be applied to the particular battery cell composing the battery module and controls an application direction of the charge current. A microprocessor determines a battery cell to be charged of a low-charged battery cell and controls the current conversion switch module to allow the charge current to be applied to the battery cell to be charged.

Abstract: An automatic charge equalization apparatus using a regulated voltage source according to the present invention comprises a battery module having a plurality of batteries connected in series; a battery string having M (natural number of M?2) battery modules connected in series: a regulated voltage source which is provided for each battery module and outputs and maintains an average voltage of the battery string; a bidirectional switch block which is provided for each battery module between the battery module and the regulated voltage source to connect each battery to an output of the regulated voltage source by forming a parallel current moving path to each battery composing the battery module; and a microprocessor controlling the bidirectional switch block, wherein each battery composing the battery module shares the regulated voltage source by the bidirectional switch block and the microprocessor controls the bidirectional switch block to successively connect the batteries composing the battery module with t

Abstract: Provided is a secondary battery management system and method for exchanging information in a multi-pack parallel structure using the same, and more particularly, to a secondary battery management system and method for exchanging information in a multi-pack parallel structure using the same, including: a unit battery cell; a battery module in which a plurality of unit battery cells are disposed; and a voltage temperature management system (VTMS) generates a state information and generates a diagnosis information of battery module or the unit battery cells using unit battery cell information for the unit battery cells.

Abstract: Provided is a system for estimating a state of health for an ESS, including: a pack voltage calculating processor receiving cell voltage of a battery cell that is the most basic of an energy storage system (ESS) to calculate pack voltage of a battery pack; an SOH estimating processor receiving the pack voltage from the pack voltage calculating processor and setting preconditions for estimating state of health (SOH) to estimate the SOH meeting the preconditions; an SOH calculating processor confirming pack voltage when meeting the preconditions at the time of estimating the SOH and calculating the SOH by using a voltage difference between the confirmed current pack voltage and initial pack voltage; and an SOC compensating processor calculating a state of charge (SOC) compensating capacity by multiplying initial rated capacity by the SOH received from the SOH calculating processor.

Abstract: Provided are an apparatus and a method for measuring battery capacity fade. The apparatus for measuring battery capacity fade includes: at least one battery used in a hybrid vehicle, a plug-in hybrid electric vehicle or an electric vehicle; a sensing unit sensing current, voltage and temperature of the at least one battery; a data processing unit measuring voltage and current data from the sensing unit if the current is constant current in a charging period and state of charge (SOC) is in a predetermined region; and a calculating unit setting at least two points on the voltage data and applying the voltage data corresponding to the at least two points to an equivalent circuit model of the at least one batter, to calculate faded capacity.

Abstract: The present invention relates to a cell balancing method for a high-voltage battery pack, and the method comprises steps of a) measuring an electromotive force of each cell composing the battery pack; b) selecting the cell to be balanced based on the electromotive force of the each cell; c) computing a total amount of charges used for balancing of the cell to be balanced; d) obtaining an accumulative amount of charges by accumulating an amount of current consumed for the balancing while performing the balancing of the cell to be balanced; and e) completing the balancing of the cell to be balanced when the accumulative amount of charges equals the total amount of charges.

Abstract: The present invention relates to a pouch-type secondary battery including a gas discharging device and a gas discharging control method, comprising: a plurality of pouched type cell modules including a pair of pouched type cells sealed by a pouch, having cathode taps and anode taps drawn to the outside of one side of the pouch, and sequentially laminated to each other, and a cell case coupled to seal the pouches of the pouched type cells; a gas discharging hole which is formed at and communicates with one side of the cell case; a connective duct which is coupled and communicates with the gas discharging hole; and a fan which is formed at one side of the connective duct.

Abstract: Provided is a SOC correcting system in a parallel structure of multiple packs that a plurality of sub-packs having serially connected cells are connected in parallel, the system including of: sub BMSs connected to each of the sub packs to calculate each SOC of the sub-packs; and a main BMS connected to each of the sub BMSs to collect the SOCs calculated in each of the sub BMSs and transmit a final SOC to a vehicle controller, wherein when an average SOC to each SOC of the sub-packs is less than 50%, the main BMS determines a minimum value among the SOCs of the sub-packs as a final SOC, and when the average SOC to each SOC of the sub-packs is 50% or more, the main BMS determines a maximum value among the SOCs of the sub-packs as a final SOC.

Abstract: This invention is related to a method and an apparatus for choosing SOCi (State Of Charge based on current) or SOCv (State Of Charge based on voltage) as the SOC (State Of Charge) of a battery depending on a condition in a battery management system by using an equivalent circuit model. In this invention, a method for measuring SOC of a battery in a battery management system is characterized by comprising the steps of: obtaining voltage data and temperature by measuring the current, voltage and temperature of a battery; calculating SOCi by accumulating the current data; calculating open circuit voltage by using an equivalent circuit model which simply presents the current data, the voltage data and the battery through an electric circuit; calculating SOCv by using the temperature data and the open circuit voltage; and choosing at least one of the SOCi and the SOCv as SOC of the battery by using the SOCi and the SOCv based on the judgment on the current state of a vehicle for a certain time interval.

Abstract: Disclosed herein is a high-voltage battery with an integrated connector. The high-voltage battery includes cells, support members, a housing, the integrated connector and a BMS. A lower connection member is provided on one side of each support member and has protrusions made of electrical conductors. The protrusions come into contact with corresponding electrodes of the cells. A cell assembly formed by the arrangement of the cells and the supports is inserted into the housing. The integrated connector is connected to the lower connection members of the support members so as to mechanically and electrically connect the cells to each other.

Abstract: The present invention relates to a battery management apparatus of a high voltage battery for a hybrid vehicle, in more detail, a battery management apparatus of a high voltage battery for a hybrid vehicle which includes: a plurality of battery packs including a plurality of unit cells; slave battery management modules measuring and monitoring temperature and voltage of the unit cells in the battery packs; temperature/voltage measurement wires connecting the unit cells with adjacent unit cells for the slave battery management modules to measure temperature and voltage between the unit cells and the adjacent unit cells; a master battery management module connected with the slave battery management modules; and communication wires connecting the modules.

Abstract: Provided are a charge equalization apparatus and method for a battery string connected in series, and more particularly, are a charge equalization apparatus and method that efficiently perform charge equalization while reducing entire complexity and volume and lowering production costs through a configuration that an individual battery included in a battery string shares a single voltage sensing module and a single charge equalizing module; a switch block of a two-stage structure forms a current path for measuring voltage of individual batteries included in the battery string, and at the same time, forms a charging or discharding path of a low-charged or over-charged battery among the battery strings; and a switch device having low withstand voltage is used.