Lg Chem, Ltd

Lg Energy Solution, Ltd.

Seog Jin Yoon

Ho Chol Nam

Sung Ju Hong

Kun Joo Yang

Dong Hyun Kim

Hak In Kim

Han Yong Jeong

Jong Woon Choi

Ki Eob Moon

Cheol Woong Lee

Jae Sik Chung

Jeong Wook Kim

Hyoung Chul Yoon

Hyo Seong An

Ji Myong An

Won Hoe Lee

Seung Jin Noh

Yong Jun Cho

Seung Hwan Kim

Hyung Ku Yun

Jin Oh Yang

Tae Wook Kim

Han Chul Kim

Hyungchan Kim

Migeum Choi

Youngjoo Cha

Se Woo Shin

Sun Kwang Jung

Jae Sang Kim

Ga Young Woo

Jaehyeon Ju

The present invention relates to a temperature condition diagnosis system and method for diagnosing a temperature abnormal state of a battery cell or module according to a relative temperature change of the battery cell using a difference in cell or module surface temperature compared to a battery management system (BMS) temperature sensor.

System and method for diagnosing abnormal state of temperature of battery cell by using BMS temperature sensor

A battery pack according to an embodiment includes a case in which a plurality of battery cells are accommodated, and a battery management system (BMS) for detecting damage to the case, wherein the BMS includes a voltage output terminal for outputting a predetermined voltage, a ground terminal, and a voltage measurement terminal for measuring voltage, wherein the case includes a conductive member having a first end connected to the voltage output terminal of the BMS and a second end connected to the ground terminal of the BMS, and a sensing wire having a first end connected to the conductive member and a second end connected to a voltage measurement terminal of the BMS, the conductive member being provided between one surface inside the case and the other surface opposite to the one surface.

Apparatus and method for detecting damage to battery pack case

A battery pack according to an embodiment of the present invention includes a (+) output terminal of the battery pack, a (−) output terminal of the battery pack, a (−) line connecting the (−) output terminal to a (−) terminal of a battery cell constituting the battery pack, a pre-charge FET provided on the (−) line, a system contact terminal configured to check whether the external system is connected, a battery management system (BMS), and a charge/discharge FET configured to charge or discharge the battery pack under a control of the BMS, wherein the pre-charge FET and the charge/discharge FET are connected in parallel.

BMS wakeup device and method

Discussed is a battery pack, the temperature of which is maintained within a certain range by a heating component or a heat dissipating component attached thereto. The battery pack includes an upper end cover provided above cylindrical cells to protect an inside of the battery pack, a first metal panel positioned below the upper end cover and jointed to the upper portion of the cylindrical cells, a second metal panel jointed to a lower portion of the cylindrical cells, a holder configured to surround and fix an outer side surface of the entire cylindrical cells and the lower portion of the second metal panel, and a lower end cover positioned below the second metal panel and the holder to form a lower end portion of the battery pack.

Battery pack

The present disclosure relates to a flexible printed circuit board (FPCB) and a method for manufacturing a flexible printed circuit board, which is capable of minimizing a process tolerance generated when an outer shape of a board is processed by forming a reference mark in the FPCB and performing an outer shape processing by using the reference mark as a reference point among a series of processes for manufacturing the board.

Method for manufacturing flexible printed circuit board

The present disclosure relates to a battery module and a battery pack including the same, and more particularly, to a battery module and a battery pack having the same, the battery module being formed in a heat transfer structure so that the temperatures of a plurality of battery cells are efficiently adjusted, and formed such that a heat transfer member is formed to have through holes so that the stability of the battery cells increases.

Battery module and battery pack comprising same

The present disclosure relates to a battery pack, and more particularly, to a battery pack, the temperature of which is maintained within a certain range by a heating component or a heat dissipating component attached thereto.

A heat-radiating structure of a cylindrical battery cell includes a first plate configured to contact an upper partial area of a battery cell and to which a current of the battery cell is discharged, the first plate having an area not contacting the battery cell, a second plate disposed between the first plate and the battery cell, the second plate not contacting the battery cell, and a heat transfer part disposed between the second plate and the battery cell and configured to transfer heat generated in the battery cell to the second plate while contacting the battery cell is provided. The second plate contacts the area of the first plate not contacting the battery cell and a portion of the current discharged from the battery cell to the first plate is discharged from the second plate. A heat-radiating system of a cylindrical battery is also provided.

Heat dissipating structure of cylindrical battery cell

A heater control system for a battery pack and a method for the same in accordance with the present invention relate to a system and a method for the same in which according to temperature deviations generated during heating operations of heaters provided in each battery pack, between battery packs and cells included in the battery packs, each heater is individually controlled to allow the battery packs and the battery cells therein to be heated to a uniform temperature state.

Heater control system for battery packs having parallel connection structure, and method therefor

A battery capacity estimation apparatus including: a battery; a sensing unit connected to the battery to measure an OCV of the battery; an SOC estimation unit connected to the sensing unit to estimate an SOC of the battery using the OCV measured from the sensing unit; a memory unit storing data including the SOC and the OCV of the battery, the memory unit being connected to the SOC estimation unit; and an operation unit connected to the SOC estimation unit and the memory unit, the operation unit being configured to calculate an SOC reduction degree according to a use voltage range change and re-calculate a changed SOC according to a changed use capacity.

Battery capacity estimation apparatus and method, and battery management apparatus provided with same and method thereof

A battery pack and a method for manufacturing the same, and more particularly, a battery pack in which a heat dissipation member is attached to a protection element assembly to reduce heat generated from the battery pack when being discharged and a method for manufacturing the same.

Battery pack and manufacturing method therefor

The present disclosure provides a battery pack including a plurality of cylindrical battery cells forming a clamping part by coupling a cap assembly on one opened surface of a cylindrical can and forming a first electrode terminal and a second electrode terminal on a top surface of the clamping part and a top end central portion of the cap assembly, respectively, and a first electrode terminal connecting plate simultaneously coupled to upper end surfaces of the clamping parts of the battery cells in a state in which cylindrical battery cells are laterally arranged so that the cap assemblies of the cylindrical battery cells head in the same direction. The first electrode terminal connecting plate includes a welding plate having a relatively thin thickness to be welded on the upper end surface of the clamping part of the cap assembly, and a conductive plate coupled to a top surface of the welding plate, which is opposite to the cap assembly, and having a relatively thick thickness in comparison with that of the welding plate for smooth current flow between first electrode terminals of the upper end surface of the clamping part.

Battery pack comprising electrode terminal connection plate

The present disclosure relates to battery cell balancing using duty ratio control, and more particularly, to a battery cell balancing method and system with improved accuracy and efficiency by detecting a temperature of a resistance caused by a current flowing in a battery cell during battery cell balancing, calculating a duty ratio of the battery cell balancing according thereto, and detecting a voltage of the battery cell when a predetermined time elapses after the cell balancing operation.

Method and system for effective battery cell balancing through duty control

The present invention relates to an apparatus and method for providing a charging voltage, and more particularly, to an apparatus and method for providing a charging voltage, which rapidly provide a stable charging voltage to a corresponding cell through a cell balancing voltage source that is one of two separate charging voltage sources, when cell balancing is necessary.

Growing community of inventors

Cheongju-si, South Korea

Seog Jin Yoon