Patents Assigned to LG ENERGY SOLUTION, LTD.
  • Patent number: 11962039
    Abstract: A method of mounting a bus-bar frame includes: forming a plurality of cell lead blocks and a battery cell stacked body by alternately stacking a cell lead block and at least one battery cell; disposing a top cover with respective ends on which a bus-bar frame is installed so as to cover the battery cell stacked body; removing the lead blocks from a space between the battery cell stacked body and the bus-bar frame; and installing the bus-bar frame on the battery cell stacked body by rotating the bus-bar frame. The alternately stacking of the cell lead block and the at least one battery cell includes positioning an electrode lead protruding from each battery cell between neighboring ones of the cell lead blocks.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: April 16, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Young Bum Cho, Kyung Mo Kim, Sung Won Seo, Seung Joon Kim
  • Patent number: 11961956
    Abstract: A cylindrical secondary battery module includes: a plurality of cylindrical secondary battery cells respectively having a battery case in which an electrode assembly and an electrolyte are accommodated; a cell frame at which the plurality of cylindrical secondary battery cells are disposed; and a lid coupled to the cell frame and having a flame outlet. The cell frame includes: a plurality of plate members bent and coupled to intersect each other; and a space formed between the plurality of plate members so that the cylindrical secondary battery cells are disposed therein.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Ji-Su Yoon, Su-Chang Kim, Jae-Min Yoo, Jae-Uk Ryu, Dal-Mo Kang, Jeong-O Mun
  • Patent number: 11961642
    Abstract: A shunt resistor module, which includes a shunt resistor having a resistor unit having a predetermined resistance, plate-shaped terminal units respectively configured to extend at both sides of the resistor unit, and a voltage measurement lead pin configured to protrude perpendicular to the terminal unit and having an end portion bent to be parallel to the terminal unit, and a PCB substrate having an assembly guide portion formed to be cut inward by a predetermined depth from an outermost side thereof. The voltage measurement lead pin is fit into the assembly guide portion so that the resistor unit and the terminal unit are placed on a front surface of the PCB substrate and the end portion of the voltage measurement lead pin is caught at a rear surface of the PCB substrate.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: April 16, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventor: Dong-Wan Ko
  • Patent number: 11962003
    Abstract: A negative electrode active material for a lithium secondary battery which includes: silicon particles; and a coating layer surrounding respective silicon particles, wherein the silicon particles have a full width at half maximum (FWHM) of peak ranging from 2 to 10 in the particle diameter distribution having an average particle diameter (D50) of 1 ?m to 30 ?m, and the coating layer includes at least one selected from the group consisting of carbon and a polymer. A negative electrode and lithium secondary battery including the negative electrode active material are also disclosed.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Su-Min Lee, Je-Young Kim, Se-Mi Park, Yong-Ju Lee
  • Patent number: 11959974
    Abstract: A pressurizing short-circuit inspection apparatus, which includes compression plates arranged with a predetermined separation distance therebetween so that at least one of secondary battery cells is inserted therein, the compression plates being moved in ±X-axis direction to adjust the separation distance; and a pressurizing short-circuit inspection assembly having a cell pressing unit configured to press a predetermined region of a body of the secondary battery cell and a power supply unit provided in contact with an electrode lead of the secondary battery cell to apply a test voltage, the pressurizing short-circuit inspection assembly being respectively mounted to the compression plates to be movable along ±Y-axis direction, is provided.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Jin-Gon Kim, Cha-Hun Ku, Su-Taek Jung, Jung-Kwan Pyo
  • Patent number: 11962034
    Abstract: A separator including: a porous polymer substrate having a plurality of pores; and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer comprises inorganic particles, core-shell type polymer particles having a core portion and a shell portion surrounding the core portion, and a binder polymer positioned on the whole or a part of the surface of the inorganic particles and core-shell type polymer particles to connect and fix the inorganic particles and core-shell type polymer particles with one another. The core portion has a glass transition temperature, Tg, higher than the shell portion in the core-shell type polymer particles. The ratio of the average diameter of the core-shell type polymer particles to the average diameter of the inorganic particles is 80% to 200%.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hye-Jin Kwon, In-Hyouk Sung
  • Patent number: 11959972
    Abstract: A battery diagnosing apparatus includes a measuring unit configured to measure voltage and temperature of a battery, an ohmic resistance determining unit configured to determine an ohmic resistance of the battery based on an impedance profile generated for the battery, and a control unit configured to calculate a voltage change amount by comparing the voltage of the battery measured by the measuring unit with a reference voltage, calculate a resistance change rate by comparing the ohmic resistance determined by the ohmic resistance determining unit with a reference resistance, judge an internal gas generation level of the battery by comparing magnitudes of the calculated resistance change rate and a criterion resistance change rate, and judge an internal gas generation cause of the battery by comparing magnitudes of the calculated voltage change amount and a criterion voltage change amount.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION LTD.
    Inventors: Kyung-Hwa Woo, Yoon-Jung Bae, A-Ming Cha
  • Patent number: 11959971
    Abstract: Disclosed is a method and system for detecting connection failure of a parallel connected cell that provides improved accuracy by first detecting the cell connection failure due to the current interruption device (CID) operation of the battery or opening the parallel connection line for a battery that is being discharged by the operation of an external device, and confirming the first detection result through Direct Current Internal Resistance (DCIR) measurement for the battery.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventor: Jeong Wan Kim
  • Patent number: 11962020
    Abstract: A battery cell includes an electrode assembly, a pair of electrode leads electrically connected to the electrode assembly, a battery case configured to accommodate the pair of electrode leads such that the pair of electrode leads protrude at least partially in a front and rear direction of the battery cell, the battery case having an accommodation space formed to accommodate the electrode assembly, and a taping unit configured to integrally cover both side surfaces and upper and lower surfaces of the battery case.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Eun-Gyu Shin, Jae-Min Yoo, Yoon-Koo Lee, Dal-Mo Kang, Jeong-O Mun
  • Patent number: 11961983
    Abstract: Disclosed is a battery module, which includes: a battery cell assembly having at least one battery cell; a module case configured to accommodate the battery cell assembly; and at least one injection hole provided in a bottom portion of the module case to inject a thermally conductive adhesive into the module case.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: April 16, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Soo-Youl Kim, Jae-Hun Yang, Han-Jong Yoon, Jae-Min Lee, Hae-Ryong Jeon, Young-Ho Choi
  • Patent number: 11959818
    Abstract: A method for predicting the explosion pressure of a medium- and large-size cell module, according to the present invention, comprises the steps of: (S100) deriving a profile (SOC-temperature profile) of the generation temperature according to a state of charge (SOC) of a medium- and large-size cell module to be predicted; (S200) mounting a small cell inside an explosion pressure measurement device; (S300) overcharging the small cell until an explosion occurs while heating the small cell in the same manner as the SOC-temperature profile derived in step (S100); (S400) measuring the pressure during the explosion of the small cell; and (S500) converting the pressure during the explosion of the measured small cell into pressure of a medium- and large-size cell module.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Ji Hye Park, Su Hyun Kim
  • Patent number: 11958941
    Abstract: A polymer for a gel polymer electrolyte, a gel polymer electrolyte and a lithium secondary battery comprising the same are disclosed herein. In some embodiments, a polymer for the gel polymer electrolyte includes a copolymer having a main chain and a first side chain and a second side chain bonded to the main chain, wherein the main chain contains a fluoropolymer, wherein the first side chain contains a siloxane group and the second side chain contains an acrylic polymer. The polymer improves stability of a gel polymer electrolyte and a lithium secondary battery including the same.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: April 16, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Jeongae Yoon, Solji Park, Kyoung Ho Ahn, Sujeong Kim, Chul Haeng Lee, Sung Soo Yoon
  • Patent number: 11959969
    Abstract: There is provided an apparatus for diagnosing whether or not an error has occurred in battery cells, the apparatus including a voltage measurement circuit for measuring a voltage of a battery cell, a data processing circuit for calculating a target statistical value indicating a state of the battery cell based on a voltage measured by the voltage measurement circuit, and calculates a cumulative statistical value, and a diagnosis circuit that determines whether or not an error has occurred in the battery cell through a cumulative determination operation of comparing the cumulative statistical value with a cumulative reference value, and counts a number of times of cumulative error when it is determined that the error has occurred in the battery cell in the cumulative determination operation.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: April 16, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Young Jin Kim, Won Tae Joe, Bom Jin Lee, Bo Mi Lim
  • Publication number: 20240118028
    Abstract: An infrared heat source module is configured to minimize problems such as wrinkles or cracks in electrodes even if the patterns of a coated part and an uncoated part of the electrodes present in a current collector vary. The module improves a drying efficiency of the coated part of the current collector. An electrode using the infrared heat source module is manufactured by a process.
    Type: Application
    Filed: January 27, 2022
    Publication date: April 11, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Soon Sik Choi, Young Kuk Ko, Oh Cheol Kwon, Ji Hwan Kim, Jeong Won Lee
  • Publication number: 20240120616
    Abstract: A secondary battery includes an electrode assembly having a positive electrode provided with a positive electrode tab, a separator, and a negative electrode provided with a negative electrode tab, the positive electrode, the separator, and the negative electrode being wound, the electrode assembly having a core part at a center thereof; a can configured to receive the electrode assembly therein, the negative electrode tab being connected to the can; a cap assembly coupled to an opening of the can, the positive electrode tab being connected to the cap assembly; and a reinforcing member provided on an end of the separator exposed beyond the positive electrode or the negative electrode to prevent heat of the positive electrode tab or the negative electrode tab from being transferred to the separator.
    Type: Application
    Filed: April 19, 2022
    Publication date: April 11, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Soon Kwan KWON, Su Taek JUNG, Seok Hoon JANG, Hyeok JEONG, Sang Ho BAE, Byeong Kyu LEE, Seong Won CHOI, Min Wook KIM, Yong Jun LEE
  • Publication number: 20240116072
    Abstract: A slot die shim, which is interposed between a first slot die and a second slot die, has a plurality of flow paths separated by a plurality of protruding portions so that electrode slurry flows through the plurality of flow paths. The slot die shim includes a coupling portion coupled to the first and second dies, a plurality of first protruding portions protruding from one side of the coupling portion and spaced apart from one another, and one or more second protruding portions positioned between the first protruding portions, in which the second protruding portion includes a groove through which the slurry flows.
    Type: Application
    Filed: December 6, 2022
    Publication date: April 11, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Younggyu Moon, Joon Sun Park, Manhyeong Kim, Eudeum Kim, Byeongwon Lee
  • Publication number: 20240116011
    Abstract: An apparatus for manufacturing a slurry for an electrode includes a mixer configured to mix an electrode active material, a conductive material, a binder, and a solvent to form a slurry; a flow path configured to sample the slurry from the mixing part to provide a sample; a weigher configured to measure a weight sample; a washer configured to wash an interior of the weigher; and a gas discharge part configured to circulate air in the weigher.
    Type: Application
    Filed: October 28, 2022
    Publication date: April 11, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Yonghan KIM, Takashi TAKEUCHI, Hyeon Min KO, Sora LEE, Seungmi HAN
  • Publication number: 20240120478
    Abstract: A lithium secondary battery includes a cathode having a cathode active material, an anode having an anode active material, a separator, and an electrolyte. The cathode active material comprises a lithium composite transition metal compound having Ni, Co, and Mn, and has single particles and/or pseudo-single particles. Each single particle consists of one nodule, and each pseudo-single crystal is a composite of 30 or fewer nodules. The single particles and/or pseudo-single particles have an average particle diameter (D50) of 1 ?m or more. The anode active material has a silicon carbon composite having an average particle diameter (D50) of more than 1 ?m. The average particle diameter (D50) of the single particles and/or pseudo-single particles is smaller than the average particle diameter (D50) of the silicon carbon composite.
    Type: Application
    Filed: August 3, 2023
    Publication date: April 11, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Su Min Lee, Sun Young Shin, Yong Ju Lee, Bumgi Heo
  • Publication number: 20240120521
    Abstract: An electrode assembly manufacturing device according to the present disclosure includes a transfer unit for transferring an electrode assembly to a sealing position, multiple sealing blocks, and a lower support. The lower support is controlled to move up and down in a first state in which the sealing block is moved forward toward the electrode assembly, so that both distal ends of multiple separators in the longitudinal direction are bent downward and sealed while being in contact with the sealing block. Since the electrode assembly manufacturing device according to embodiments of the present invention heat-seals the end of the separator in a downwardly bent state, it is possible to manufacture an electrode assembly that prevents blocking of the separator when sealing a pouch.
    Type: Application
    Filed: November 16, 2022
    Publication date: April 11, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventor: Gyu Dae Ahn
  • Publication number: 20240120576
    Abstract: A battery module includes a sub-module stack formed by stacking a plurality of sub-modules including a cooling member having a coolant flow path and a plurality of battery cells disposed on both surfaces of the cooling member; and a pair of bus bar frame assemblies coupled to one side and the other side of the sub-module stack to electrically connect the plurality of battery cells.
    Type: Application
    Filed: April 5, 2022
    Publication date: April 11, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Sang-Hyun YU, Young-Bum CHO, Won-Hoe KU, Han-Ki YOON, Yu-Dam KONG, Jin-Kyu SHIN