Patents Assigned to LG ENERGY SOLUTION, LTD.
-
Publication number: 20240128517Abstract: Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on an axis to define a core and an outer circumference. The first electrode includes an uncoated portion at a long side end thereof and exposed out of the separator along a winding axis direction of the electrode assembly. A part of the uncoated portion is bent in a radial direction of the electrode assembly to form a bending surface region that includes overlapping layers of the uncoated portion, and in a partial region of the bending surface region, the number of stacked layers of the uncoated portion is 10 or more in the winding axis direction of the electrode assembly.Type: ApplicationFiled: January 19, 2022Publication date: April 18, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Hae-Jin LIM, Jin-Hak KONG, Soon-O LEE, Kyu-Hyun CHOI, Do-Gyun KIM, Su-Ji CHOI, Kwang-Su HWANGBO, Geon-Woo MIN, Min-Ki JO, Jae-Won LIM, Hak-Kyun KIM, Je-Jun LEE, Ji-Min JUNG, Jae-Woong KIM, Jong-Sik PARK, Yu-Sung CHOE, Byoung-Gu LEE, Duk-Hyun RYU, Kwan-Hee LEE, Jae-Eun LEE, Bo-Hyun KANG, Pil-Kyu PARK
-
Patent number: 11959972Abstract: 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: GrantFiled: October 12, 2021Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION LTD.Inventors: Kyung-Hwa Woo, Yoon-Jung Bae, A-Ming Cha
-
Patent number: 11959818Abstract: 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: GrantFiled: October 18, 2019Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Ji Hye Park, Su Hyun Kim
-
Patent number: 11961642Abstract: 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: GrantFiled: August 10, 2020Date of Patent: April 16, 2024Assignee: LG Energy Solution, Ltd.Inventor: Dong-Wan Ko
-
Patent number: 11959974Abstract: 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: GrantFiled: August 10, 2020Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Jin-Gon Kim, Cha-Hun Ku, Su-Taek Jung, Jung-Kwan Pyo
-
Patent number: 11962039Abstract: 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: GrantFiled: August 19, 2019Date of Patent: April 16, 2024Assignee: LG Energy Solution, Ltd.Inventors: Young Bum Cho, Kyung Mo Kim, Sung Won Seo, Seung Joon Kim
-
Patent number: 11962020Abstract: 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: GrantFiled: January 20, 2020Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Eun-Gyu Shin, Jae-Min Yoo, Yoon-Koo Lee, Dal-Mo Kang, Jeong-O Mun
-
Patent number: 11959969Abstract: 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: GrantFiled: May 12, 2021Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Young Jin Kim, Won Tae Joe, Bom Jin Lee, Bo Mi Lim
-
Patent number: 11961983Abstract: 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: GrantFiled: July 9, 2020Date of Patent: April 16, 2024Assignee: 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: 11958941Abstract: 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: GrantFiled: August 10, 2020Date of Patent: April 16, 2024Assignee: LG Energy Solution, Ltd.Inventors: Jeongae Yoon, Solji Park, Kyoung Ho Ahn, Sujeong Kim, Chul Haeng Lee, Sung Soo Yoon
-
Patent number: 11959971Abstract: 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: GrantFiled: September 24, 2020Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventor: Jeong Wan Kim
-
Patent number: 11962003Abstract: 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: GrantFiled: January 21, 2020Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Su-Min Lee, Je-Young Kim, Se-Mi Park, Yong-Ju Lee
-
Patent number: 11962034Abstract: 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: GrantFiled: November 1, 2019Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Hye-Jin Kwon, In-Hyouk Sung
-
Patent number: 11961956Abstract: 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: GrantFiled: July 24, 2018Date of Patent: April 16, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Ji-Su Yoon, Su-Chang Kim, Jae-Min Yoo, Jae-Uk Ryu, Dal-Mo Kang, Jeong-O Mun
-
Publication number: 20240120616Abstract: 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: ApplicationFiled: April 19, 2022Publication date: April 11, 2024Applicant: 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: 20240120547Abstract: The present disclosure relates to: a lithium secondary battery including a positive electrode, a separator, and a negative electrode, the lithium secondary battery being injected with an electrolyte solution containing a eutectic mixture of succinonitrile and lithium salt as a solvent; and a method for manufacturing the lithium secondary battery.Type: ApplicationFiled: March 28, 2022Publication date: April 11, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Sook YUN, Ji Hyun CHOI
-
Publication number: 20240120550Abstract: A method of manufacturing a curved secondary battery having a target radius of curvature includes incorporating an electrode assembly including a cathode, an anode, and a separator interposed between the cathode and the anode into a battery case together with an electrolyte to manufacture a secondary battery, subjecting the secondary battery to a first activation, degassing the secondary battery after the first activation, subjecting the secondary battery to a first hot press after degassing the secondary battery so that the secondary battery has a first radius of curvature, subjecting the secondary battery to a second activation after the first hot press, and subjecting the secondary battery to a second hot press after the second activation so that the secondary battery has a second radius of curvature.Type: ApplicationFiled: November 15, 2022Publication date: April 11, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Dong Hun SONG, Minjung KIM, Hayelin CHOI, Wooyong LEE
-
Publication number: 20240116011Abstract: 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: ApplicationFiled: October 28, 2022Publication date: April 11, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Yonghan KIM, Takashi TAKEUCHI, Hyeon Min KO, Sora LEE, Seungmi HAN
-
Publication number: 20240120556Abstract: An electrode insulating coating composition according to the present invention includes boehmite particles, a dispersant, a binder, and a solvent, wherein the dispersant includes two or more fatty acid compounds, and is included in an amount of 1.2 to 8.8 parts by weight with respect to 100 parts by weight of the boehmite particles.Type: ApplicationFiled: October 31, 2022Publication date: April 11, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Houng Sik YOO, Dong Hyun KIM, Sang Hoon CHOY, Hyeon CHOI
-
Publication number: 20240118028Abstract: 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: ApplicationFiled: January 27, 2022Publication date: April 11, 2024Applicant: LG Energy Solution, Ltd.Inventors: Soon Sik Choi, Young Kuk Ko, Oh Cheol Kwon, Ji Hwan Kim, Jeong Won Lee