Lg Energy Solution, Ltd.

Electronics and Telecommunications Research Institute

Lg Chem, Ltd

Jae Dong Park

Byoung Whi Kim

Hyun Ki Cho

Hyeong Ho Lee

Sang Hoon Lee

Jae Woo Yang

Keun Wook Lee

Seung Hyun Cho

Ji Eun Kim

Ho Byung Yoon

Seong Yeol Yang

Woo Ram Lee

Chan Ha Park

Ji Won Hwang

Sung Gun Lee

Jung Hyun Kwon

Hu Jun Lee

A battery life prediction apparatus according to an embodiment disclosed herein includes a processor and memory having programmed thereon instructions that, when executed, are configured to cause the processor to obtain information about a charge end voltage of a battery corresponding to a charge protocol and predict a life of the battery corresponding to the charge protocol based on the information about the charge end voltage of the battery corresponding to the charge protocol.

Battery self-discharge current measurement apparatus and operating method thereof

Discussed is a battery management apparatus which includes a battery management system that monitors a state of a battery, and a power receiving device that wirelessly receives power from a power transmitting device, where the battery management system calculates an optimum charging condition for the battery based on data on the state of the battery and power transmission performance of the power transmitting device.

Wireless charging receiver integrated battery management system and method

A system for detecting a defective battery using wireless communications. The system includes first sensors and a first master device. The first sensors are matched on a 1:1 basis with first battery modules to monitor the first battery modules. The first master device communicates with the first sensors. The respective first sensors each include a first monitoring circuit which collects a primary data on a 1:1-matched first battery module in a monitoring mode, and a first communicating circuit which outputs the primary data to the first master device in a communicating mode. The first monitoring circuit is turned off in the communicating mode. The first communicating circuit is turned off in the monitoring mode.

System and method for detecting a defective battery using wireless communications

Disclosed is a battery management system and a battery pack and the battery management system includes: a pack voltage sampling unit for periodically sampling a pack voltage of a battery pack; a pack current sampling unit for sampling a pack current of the battery pack; and a control unit for, when the pack voltage sampling of the battery pack is completed, recording a time from a sampling start time of the pack voltage to a sampling completion time of the pack voltage as a first time, and transmitting a voltage sampling synchronization signal for measuring a cell voltage of a battery cell to a plurality of lower-level battery management systems.

Battery management system and battery pack

The present invention provides a battery pack state parallel-monitoring device having a battery pack configured with a plurality of battery cells, a cell monitoring unit for measuring a state of the plurality of battery cells, a BMIC for generating a diagnostic signal indicating a state of the battery pack through the cell monitoring unit, a main MCU for receiving the diagnostic signal, and an auxiliary MCU for receiving the diagnostic signal and transmitting/receiving data of the main MCU, the battery pack state parallel-monitoring device including data lines connecting the BMIC and the main MCU to each other, parallel lines connected in parallel to the data lines, and a communication monitoring unit connected to the parallel lines to monitor data transmitted/received between the BMIC and the main MCU and transfer the monitored data to the auxiliary MCU.

Battery pack status parallel monitoring device

A PLC-based wavelength-tunable WDM-PON system with an optical wavelength alignment function, the WDM-PON system comprises: a PLC platform formed on a silicon substrate; a semiconductor chip comprising an active region generating light and a passive region located in front of the active region for vertically coupling the light generated in the active region; a planar lightwave circuit (PLC) waveguide; one portion of a PLC platform where the semiconductor chip is surface mounted; waveguide Bragg grating (WBG) formed at a predetermined location of the PLC waveguide; a directional coupler transferring an optical power by permitting the passive region to approach the PLC waveguide; a heater terminal, which is formed on the WBG; and a V-groove for attaching an optical fiber to another end of the PLC waveguide. Accordingly, a WDM-PON system having a function of realizing a cost-effective optical wavelength alignment can be provided.

WDM-PON system with optical wavelength alignment function

A method for fabricating a laser includes preparing an optical fiber including the optical fiber Bragg grating formed at a region thereof, and a ferrule provided with a cylindrical free space penetrating both ends thereof; applying a first thermal epoxy resin to a partial region of the outer cylindrical surface of the other region of the optical fiber, at which the optical fiber Bragg grating is not formed; inserting the optical fiber into the ferrule so that the region of the optical fiber at which the optical fiber Bragg grating is formed and the region of the optical fiber to which the first thermal epoxy resin is applied are located in the cylindrical free space of the ferrule; fixing the optical fiber to the ferrule by curing the first thermal epoxy resin; and optically coupling one end of the optical fiber, fixed to the ferrule, and a light source.

Growing community of inventors

Daejeon, South Korea

Jae Dong Park