Patents Assigned to LG ENERGY SOLUTIONS, LTD.
  • Battery pack having waterproof function and manufacturing method therefor
    Patent number: 11469472
    Abstract: A battery pack having a battery module having a module case to fix an entire outer periphery of a plurality of battery cells, an upper stage pack cover positioned on an uppermost stage of the battery module and having a pair of terminal penetration holes formed therein, and a lower stage pack cover positioned under the battery module to surround a lower stage portion of the battery module. The battery module is provided with a pair of electrode terminals at a position corresponding to the terminal penetration holes of the upper stage pack cover. Each electrode terminal of the pair of electrode terminals pass through a corresponding terminal penetration hole of the pair of terminal penetration holes and are exposed to the outside. A method for manufacturing the same is also provided.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: October 11, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventor: Ji Myong An
  • UNDERBODY FOR VEHICLE
    Publication number: 20220314772
    Abstract: Discussed is an underbody for a vehicle including a tray member fastened to a lower portion of a vehicle body frame and including a receiving portion having a structure with an open lower surface to accommodate a battery module; and a cover member to cover the open lower surface of the receiving portion, wherein the cover member includes a flow path to circulate a refrigerant fluid.
    Type: Application
    Filed: August 7, 2020
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Kyung Mo KIM, Ho June CHI, Jeong Oh MOON, Jung Hoon LEE, Jin Yong PARK, Hee Jun JIN, Jhin Ha PARK
  • BATTERY RACK AND ENERGY STORAGE DEVICE COMPRISING BATTERY RACK
    Publication number: 20220320632
    Abstract: A battery rack includes a plurality of battery modules including at least one battery cell and a module case configured to accommodate the at least one battery cell and including a fire extinguishing unit capable of supplying a fire extinguishing agent into the module case when thermal runaway or fire occurs in the at least one battery cell; a rack case configured to accommodate the plurality of battery modules; and a drainage guide unit provided to the rack case and configured to guide the fire extinguishing agent used when the thermal runaway or fire occurs to be drained.
    Type: Application
    Filed: March 4, 2021
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Kown SON, Goan-Su JUNG, Jong-Soo LEE, Jin-Kyu LEE
  • Method and Device for Evaluating Dispersion of Binder in Electrode Mixture Layer
    Publication number: 20220316853
    Abstract: The present invention relates to a method and device for evaluating the thickness-direction dispersion of a binder in a mixture layer of an electrode. The thickness-direction dispersion of the binder in the mixture layer of the electrode can be evaluated through a non-destructive method.
    Type: Application
    Filed: November 19, 2020
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventor: Ji Hye Park
  • Battery Cell And Battery Module
    Publication number: 20220320588
    Abstract: A battery cell with an electrode assembly and a pouch case is disclosed herein. The electrode assembly can including a positive electrode, a negative electrode, and a separator interposed therebetween. The electrode assembly can have a planar shape with four sides. The pouch case can accommodate the electrode assembly. The pouch case can include a first accommodating portion to accommodate a portion of the electrode assembly, a second accommodating portion to accommodate the remaining portion of the electrode assembly. A folding portion of the pouch case can be configured to fold the pouch case such that the first accommodating portion and the second accommodating portion face each other. The pouch case can include a seam allowance formed by boning an extension of a sealing portion of the pouch case to an extension of the folding portion at an intersection of the folding portion and the sealing portion.
    Type: Application
    Filed: June 30, 2020
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Kitaek Jung, Junyeob Seong, Jee Hoon Jeong
  • Pouch-Type Secondary Battery and Battery Module Having the Same
    Publication number: 20220320635
    Abstract: A pouch-type secondary battery includes an electrode assembly, in which a plurality of positive electrodes and a plurality of negative electrodes are alternately stacked with separators therebetween, and a pouch which is formed by sealing a pair of cases integrally connected to each other by a folding portion and includes an accommodation portion that accommodates the electrode assembly. A plurality of outer walls forming a perimeter of the accommodation portion may include a folding portion-side outer wall, which includes the folding portion, and a sealing portion-side outer wall which is connected to a sealing portion in which the pair of cases are fused to each other. An average distance between ends of the plurality of negative electrodes and the folding portion-side outer wall may be about 0.6 mm or less.
    Type: Application
    Filed: January 7, 2022
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Se Young Oh, Jeong Min Ha, Sin Woong Kim, Geun Hee Kim, Hyun Beom Kim, Hyung Ho Kwon
  • APPARATUS AND METHOD FOR DIAGNOSING STATE OF BATTERY
    Publication number: 20220317192
    Abstract: An apparatus for diagnosing a state of a battery according to an embodiment of the present disclosure includes: a charging and discharging assembly for charging or discharging a battery module; a measurer for measuring a current of the battery module at every predetermined period during a cycle in which the battery module is charged or discharged; and a controller for receiving a measurement value for the current of the battery module from the measuring unit, estimating a state of charge (SOC) of the battery module during the cycle based on the received measurement value, calculating a change rate of the estimated SOC, and determining whether a defect occurs in the battery module based on a comparison result between the calculated change rate of the SOC and a preset reference change rate.
    Type: Application
    Filed: November 26, 2020
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Dong-Chun LEE, Seung-Hwan KIM
  • BATTERY TRANSPORTING APPARATUS
    Publication number: 20220320670
    Abstract: Disclosed is a battery transporting apparatus including a frame member for supporting a battery cell; a pair of electrode lead support members movably mounted to the frame member to be adjustable in a length direction of the battery cell among length, width and thickness directions of the battery cell and for supporting electrode leads of the battery cell, respectively; a lengthwise rotary shaft coupled to the frame member; and a lengthwise moving member coupled to the pair of electrode lead support members and coupled to the lengthwise rotary shaft, the lengthwise moving member moves along the lengthwise rotary shaft when the lengthwise rotary shaft rotates so that the pair of electrode lead support members are moved.
    Type: Application
    Filed: May 13, 2020
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Dong-Hee LEE, Sung-Guk HONG
  • BATTERY MODULE, AND BATTERY RACK AND POWER STORAGE DEVICE, EACH COMPRISING SAME BATTERY MODULE
    Publication number: 20220320628
    Abstract: A battery module includes a plurality of battery cells stacked on each other; a module case configured to accommodate the plurality of battery cells; and a plurality of thermal runaway prevention units provided in the module case and respectively disposed between the plurality of battery cells along a stacking direction of the plurality of battery cells.
    Type: Application
    Filed: September 2, 2020
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Eun-Gyu SHIN, Jeong-O MUN, Jae-Min YOO, Yoon-Koo LEE
  • Secondary Battery And Case, And Method For Manufacturing Same
    Publication number: 20220320674
    Abstract: Disclosed herein are a case for secondary battery, a secondary battery including the case, and a method for manufacturing the case for the secondary battery. According to the present disclosure, a gas discharge device can be formed in the case for a secondary battery. The case may include a recess part with a cutoff area. The gas discharge device can include a passage through which a gas is discharged through the cutoff area of the recess part when a pressure of the empty space in the body part exceeds a predetermined value.
    Type: Application
    Filed: October 7, 2020
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Byeong Kyu Kim, Jung Jin Kim, Tae Hyun Kwon
  • BATTERY PACK COMPRISING CELL STACK STRUCTURE USING FLEXIBLE PRINTED CIRCUIT BOARD
    Publication number: 20220320601
    Abstract: Discussed are a battery pack including a cell stack structure using a flexible printed circuit board (FPCB), and more specifically, to a battery pack that forms various stack structures by connecting battery cells through an FPCB and stacking the battery cells in a desired stacked state. The battery pack includes at least two or more stacked battery cells; a flexible printed circuit board (FPCB) configured to electrically interconnect the battery cells; and a battery protection circuit configured to protect the battery cells, wherein the FPCB comprises a cell connection part connecting the battery cells in a predetermined connection state.
    Type: Application
    Filed: December 30, 2020
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventor: Jae Hyung KIM
  • Battery Management Apparatus
    Publication number: 20220317206
    Abstract: A battery management apparatus includes: an inverter connected to a battery cell and configured to convert a DC current output from the battery cell into an AC current according to an operation state of a plurality of switches provided therein; a measuring unit connected to a diagnosis line at which the AC current converted by the inverter is output, the measuring unit being configured to measure a voltage of the diagnosis line and output the measurement result; and a control unit having a plurality of capacitors connected to the diagnosis line and configured to control the operation state of the plurality of switches, receive the measurement result output from the measuring unit and diagnose a state of the plurality of capacitors based on the received measurement result.
    Type: Application
    Filed: September 16, 2020
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventor: Hyeon-Jin Song
  • BATTERY MODULE COMPRISING BUS BAR PLATE, BATTERY PACK COMPRISING SAME, AND ELECTRONIC DEVICE
    Publication number: 20220320691
    Abstract: A battery module according to the present disclosure includes a plurality of cylindrical battery cells including a gas vent configured to discharge an internal gas and a busbar plate including a negative electrode connection terminal extending from an edge of a connection opening and having the extended part in contact with a negative electrode terminal to electrically connect the plurality of cylindrical battery cells wherein among a positive electrode connection terminal and the negative electrode connection terminal, the connection terminal in contact with a positive electrode terminal or a negative electrode terminal that is not opened by the gas vent includes a fuse portion configured to blow when a predetermined current or above flows from the cylindrical battery cell, the fuse portion having a bent structure that is bent in a horizontal direction at least once.
    Type: Application
    Filed: August 13, 2020
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Han-Yong Jeong, Suk-Hoon Lee, Young-Su Son
  • Porous Separator and Electrochemical Device Including the Same
    Publication number: 20220320683
    Abstract: Disclosed is a free-standing porous separator including a plurality of inorganic particles and a binder polymer positioned on the whole or a part of the surface of the inorganic particles to connect the inorganic particles with one another and fix them, wherein the binder polymer comprises a polyvinylidene fluoride (PVdF)-based binder polymer modified with an ester (COO)- or carboxyl (COOH)-containing monomer. An electrochemical device including the free-standing porous separator is also disclosed. It is possible to provide a porous separator which has a reduced dimensional change in an electrolyte, while showing improved tensile strength and/or elongation at the same time.
    Type: Application
    Filed: August 7, 2020
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Min-Ji Kim, Seung-Hyun Lee, So-Mi Jeong, Da-Kyung Han
  • Device and Method for Mounting Battery Cell
    Publication number: 20220320569
    Abstract: An apparatus for mounting a battery cell mounts a battery cell stack to a frame that includes a base cover and a pair of side covers respectively extending from both ends of the base cover. The apparatus includes a support member to support the battery cell stack, a roller member around which a film fixed to the support member is wound, and a film guide member configured to move the film into the frame. When the film guide member moves the film into the frame, the support member and the frame move toward each other, and the battery cell stack is movable along the film to be mounted to the frame.
    Type: Application
    Filed: June 7, 2022
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Kyung-Mo Kim, Jeong-O Mun, Ho-June Chi
  • BINDER COMPOSITION FOR NEGATIVE ELECTRODE, NEGATIVE ELECTRODE, AND SECONDARY BATTERY
    Publication number: 20220320517
    Abstract: Disclosed is a binder composition for a negative electrode which includes a binder polymer containing at least one first functional group selected from the group consisting of a hydroxy group and a carboxyl group, and a crosslinked polymer containing at least one second functional group selected from the group consisting of an amino group and an isocyanate group, wherein the crosslinked polymer is present in an amount of 1.5 parts by weight to 8.5 parts by weight based on 100 parts by weight of the binder polymer.
    Type: Application
    Filed: December 22, 2020
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Yo Han KWON, Joonwon LIM, Min Chul JANG, Sun Kyu KIM
  • BATTERY CONTROL SYSTEM, BATTERY PACK, ELECTRIC VEHICLE, AND ID SETTING METHOD FOR THE BATTERY CONTROL SYSTEM
    Publication number: 20220314832
    Abstract: A battery control system according to the present disclosure includes first to third signal paths, and first to nth battery controllers. When a high level voltage is inputted through the second signal path, the first battery controller sets an ID of the first battery controller based on ID information collected through the first signal path and outputs the high level voltage to the second signal path. Where i is a natural number of 2-n, when the high level voltage outputted by the i?1th battery controller is inputted through the second signal path, the ith battery controller sets an ID of the ith battery controller and outputs the high level voltage to the second signal path. When the high level voltage is outputted to the third signal path by the nth battery controller, each battery controller outputs a response signal to the first signal path.
    Type: Application
    Filed: February 4, 2021
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Yang-Soo AN, Gyu-Yeol LEE, Sang-Jin LEE, Dae-Gon JEON
  • BATTERY PACK HAVING BMU COMPONENT DAMAGE PREVENTION STRUCTURE
    Publication number: 20220320599
    Abstract: Discussed is a battery pack including a structure for reducing damage to a component of a Battery Management Unit (BMU), and more particularly, to a battery pack with a structure that mitigates a concentration of stress caused by external vibration or force on the BMU mounted on a BMU mounting part and facilitates the assembly of the BMU, so that the BMU can be stably fixed to an assembled position to reduce damage to BMU components. The battery pack includes a partition configured to divide cell mounting parts and the BMU mounting part, and the partition have a stress concentration relaxation structure.
    Type: Application
    Filed: December 30, 2020
    Publication date: October 6, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Hyuk Joon SON, Jae Young JANG, Jin Hyun LEE
  • Pouch-Type Battery Case, Apparatus for Forming Same, and Pouch-Type Secondary Battery
    Publication number: 20220320634
    Abstract: A pouch-type battery case includes a cup portion, which accommodates therein an electrode assembly formed by stacking an electrode and a separator, and a plurality of die edges connecting an outer wall of the cup portion to a side extending from the outer wall. The die edges include a first region, which is rounded at a first radius (r1) of curvature and at which an electrode tab extending from the electrode is positioned, and a second region which is other than the first region and rounded at one or more second radii (r2, r3, r4) of curvature less than or equal to the first radius (r1) of curvature. The second region is divided into an inner region and an outer region with respect to the first region, and the radius (r2) of curvature in the inner region differs from the radii (r3, r4) of curvature in the outer region.
    Type: Application
    Filed: January 6, 2022
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Se Young Oh, Jeong Min Ha, Sang Hun Kim, Sin Woong Kim, Geun Hee Kim, Hyun Beom Kim, Hyung Ho Kwon
  • Battery DOD Diagnosing Apparatus and Method
    Publication number: 20220317197
    Abstract: A battery DOD diagnosing apparatus includes a measuring unit configured to measure a voltage of each of a plurality of battery cells in each of a plurality of cycles in which charging and discharging are performed, and output a plurality of voltage information for the plurality of measured voltages, and a control unit configured to receive the plurality of voltage information, calculate a voltage deviation of each cycle for each battery cell based on a reference voltage measured in an initial cycle of each of the plurality of battery cells, and diagnose a relative DOD of the plurality of battery cells based on a voltage sum value according to the plurality of voltage deviations calculated for each of the plurality of battery cells.
    Type: Application
    Filed: October 7, 2020
    Publication date: October 6, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Ji-Yeon Kim, Dae-Soo Kim, Yoon-Jung Bae