Lg Chem, Ltd

Electronics and Telecommunications Research Institute

Jong-Min Park

Jin-Kyu Choi

Hyun-Chul Lee

Jin-Seok Heo

Jong-Kyung Ko

Gwang-Ja Jin

Dae-Seung Yoo

Do-Seob Ahn

Seung-yong Lee

Ju-Young Kim

Jung-Soo Kang

Young-Bo Cho

Dong-Keun Kwon

Do-Youn Kim

Dong-Sun Lim

Byung-Tae Jang

Byung-Su Kang

Bon-Jun Ku

Seung-Min Lee

Do-Yang Jung

Gyu-Yeol Lee

Chan-Min Park

Yang-Su Kim

Woo-Jung Kim

Hyung-Joo Kim

Ki-Wook Jang

Young-Gwan Kim

Hee-Sung Moon

Eung-Yong Kim

Yeong-Ju Kang

Jun-Ill Yoon

The present disclosure discloses an apparatus and method for estimating a remaining service life of a battery that enables providing a relatively exact remaining service life of the battery to a user even when a parameter of the battery does not change sufficiently enough to enable measurement of the remaining service life due to reasons such as the battery not being used or the like.

Apparatus and method for estimating remaining service life of battery

Disclosed is a battery management unit for setting a communication identifier through the frequency of a start signal. The battery management unit according to the present invention analyzes the frequency of a received start signal. If the frequency of the start signal is a fundamental frequency, the battery management unit sets itself as a master unit. If the frequency of the start signal is not the fundamental frequency, the battery management unit sets itself as a slave unit. In addition, when outputting a start signal to another neighboring battery management unit, the battery management unit according to the present invention outputs the start signal by modulating the frequency of the start signal into a frequency produced by adding an additional frequency value to the frequency as received in the battery management unit. Thus, the battery management unit is capable of setting the status of the battery management unit and also setting a communication identifier of the battery management unit by analyzing the value of the received frequency.

Battery management unit and method for setting identifier by using frequency modulation

Disclosed is a communication terminal for constructing a daisy chain communication network without distinction between an input connector and an output connector.

Communication terminal for constructing daisy chain communication network without distinction between input connector and output connector

A power storage system includes n number of slave BMSs for transmitting data associated with an electric characteristic value of battery cells, included in battery modules managed by the slave BMSs, through slave communication networks; m number of master BMSs for primarily processing the data associated with an electric characteristic value of battery cells, transmitted through the slave communication networks, and transmitting the primarily processed data through a master communication network; and a super master BMS for secondarily processing the data transmitted through the master communication network. Since the data transmitted from each slave BMS are processed in a master BMSs, the amount of data loaded on a communication line may decrease. Therefore, even though the capacity of a power storage system increases, rapid data collection and data control may be achieved.

Power storage system having modularized BMS connection structure and method for controlling the system

The present disclosure discloses a system and method for allocating a communication identification (ID) associated with a position of a multi-battery management system (BMS). According to the system and method for allocating a communication ID according to the present disclosure, the communication ID associated with the position may be allocated to the multi-BMS quickly.

System and method for allocating communication ID for multi-BMS

Disclosed herein are a maritime communication apparatus and method. The maritime communication apparatus includes a land-based network communication unit, a maritime network communication unit, and a communication control unit. The land-based network communication unit communicates with a land-based communication network. The maritime network communication unit communicates with a maritime communication network. The communication control unit links the communication of the land-based network communication unit with the communication of the maritime network communication unit in accordance with a destination address of data provided by any one of the land-based network communication unit and the maritime network communication unit.

Maritime wireless communication method and apparatus

Disclosed is an apparatus and method for managing a battery that may manage a surrounding environment and a usage history of the battery. The battery management apparatus senses a temperature of an environment to which the battery is exposed, and stores a period of time during which the battery is exposed to a high temperature when the sensed temperature corresponds to a preset first or second area. In this instance, the battery management apparatus may determine whether the battery is simply exposed to the high temperature or the battery is charged or discharged while exposed to the high temperature, and store a usage time together. According to the present disclosure, information about a time domain affecting the life or performance of the battery may be calculated in consideration of the temperature environment to which the battery is exposed.

Apparatus and method for managing battery application environment and usage history

Disclosed is a method for setting sequential ID to a multi-slave BMS in a battery pack, the battery pack including N (N: natural number of 2 or more) slave BMSs having sequential physical locations to control a battery module containing at least one battery and a main BMS to control the N slave BMSs.

Method and system for setting sequential identification to multi-slave in battery pack

Disclosed herein are a method and apparatus for generating multiband Radio Frequency (RF) signals in maritime wireless communication. The apparatus includes a baseband conversion unit, a phase compensation unit, a Direct Current (DC) offset compensation unit, and an RF transmission unit. The baseband conversion unit converts RF signals corresponding to a baseband modulation signal having a negative frequency and a baseband modulation signal having a positive frequency into baseband signals, respectively. The phase compensation unit eliminates the images of multiband signals so as to correspond to the baseband signals. The DC offset compensation unit compensates the baseband modulation signals for DC offsets using the multiband signals from which the images have been eliminated. The RF transmission unit generates the RF signals using the signals which have been compensated for the DC offsets, and sends the RF signals via an antenna.

Apparatus and method for generating multiband radio frequency signals in maritime wireless communication

Disclosed is an apparatus for controlling the connection of a plurality of battery packs including a switching unit provided on a charge/discharge path of each battery pack to selectively open and close the charge/discharge path, a first control unit provided for each battery pack to determine the state of charge (SOC) of each battery pack and control the opening/closing of the switching unit, and a second control unit to receive the determined SOC of each battery pack from the first control unit, group battery packs having a predetermined range of SOCs, select a group containing a largest number of battery packs, connect the battery packs of the selected group in parallel, charge or discharge the parallel-connected battery packs so that a difference in SOC between the parallel-connected battery packs and the non-connected battery pack falls within a predetermined range, and connect the non-connected battery pack thereto in parallel.

Apparatus and method for controlling connection of battery packs

Disclosed is a multi-BMS identifier allocation system. The multi-BMS identifier allocation system according to the present invention comprises a master BMS and N slave BMSs (N is an integer greater than or equal to 2) which are connected to a series communication network and a parallel communication network, wherein the master BMS comprises at least two first and second master communication channels which form a communication interface with the series communication network and selectively output a forward or backward enabling signal and allocates unique communication identifiers to the slave BMSs through the parallel communication network, and the first to Nth slave BMSs start enabling in response to the forward or backward enabling signal received through the series communication network, are allocated the identifiers from the master BMS through the parallel communication network, and output an enabling signal to an adjacent slave BMS along a transmission direction of the enabling signal.

System and method for allocating identifier to multi-BMS

The control system according to the present disclosure integratedly manages a plurality of solar cell lighting apparatuses, each solar cell lighting apparatus including a light emitting source to emit light by a discharge power of a secondary battery and a control unit to adjust a magnitude of the discharge power, and includes a main control unit to collect charge capacity information of each of the secondary batteries included in the plurality of solar cell lighting apparatuses from the control unit of each of the plurality of solar cell lighting apparatuses, determine at least one solar cell lighting apparatus needed to control a light intensity based on the charge capacity collected from the secondary batteries, and output a light intensity control signal to the control unit of the determined solar cell lighting apparatus, to achieve charge capacity balancing of the secondary batteries.

System and method for controlling solar cell lighting apparatus

An apparatus for controlling a battery includes a capacitor for charging a voltage when the apparatus is on and discharging a voltage when the apparatus is off, a discharging circuit for discharging the voltage charged in the capacitor; a first switching unit for connecting or disconnecting the capacitor to/from a predetermined power source for the purpose of charging of the capacitor; a second switching unit for connecting or disconnecting the capacitor to/from the discharging unit; a voltage measuring unit for measuring a voltage charged in the capacitor; and a controller for calculating a power-off duration time according to the measured voltage. This apparatus may continuously calculate a power-off duration time of a battery pack.

Method and apparatus for calculating power-off duration time and state of charging of battery

A hexagonal array structure of a dielectric rod for shaping a flat-topped element pattern (FTEP) is provided. The hexagonal structure of dielectric rods forming a flat-topped element pattern (FTEP) includes: a center element for forming a unit radiation pattern of the FTEP through an electromagnetic wave mutual coupling by receiving a polarization signal of a basic mode; a plurality of first ring elements arranged at vertexes of a regular hexagon based on the center element for forming the unit radiation pattern by electromagnetic wave mutual coupling with the center element and an electromagnetic wave; and a circular waveguide array supporting unit for supporting the center element and the plurality of first ring elements.

Growing community of inventors

Daejeon, South Korea

Jong-Min Park