公开(公告)号：US12216168B2

公开(公告)日：2025-02-04

申请号：US18011396

申请日：2021-07-23

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Bo Mi Lim

IPC: G01R31/367 ,  G01R31/3835 ,  G01R31/392

Abstract: A battery diagnosis device includes a voltage measurement unit for measuring a voltage of a battery cell, a fitting value calculation unit for calculating a fitting voltage of the battery cell in a rest section after charging and discharging of the battery cell, and a diagnosis unit for diagnosing an abnormality of the battery cell by comparing the measured voltage measured by the voltage measurement unit and the fitting voltage calculated by the fitting value calculation unit, with respect to the rest section of the battery cell.

公开(公告)号：US20250038366A1

公开(公告)日：2025-01-30

申请号：US18716907

申请日：2023-09-08

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Ji Seon MUN

IPC: H01M50/507 ,  H01M50/233 ,  H01M50/517

Abstract: The present disclosure relates to a top-bottom separable busbar frame and a battery module including the same, and more particularly to a top-bottom separable busbar frame including a busbar frame disposed on at least one side of a plurality of battery cells, the busbar frame being constituted by an upper busbar frame and a lower busbar frame configured to be separated from and coupled to each other, a plurality of pass-through portions configured to allow electrode leads of the plurality of battery cells pass to extend therethrough, and a plurality of busbars disposed to face the plurality of pass-through portions, the plurality of busbars being electrically connected to the plurality of electrode leads.

公开(公告)号：US20250038328A1

公开(公告)日：2025-01-30

申请号：US18687287

申请日：2022-11-29

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Seung Jae CHO ,  Kun Joo YANG

IPC: H01M50/24 ,  H01M50/258 ,  H01M50/262 ,  H01M50/271

Abstract: The present disclosure relates to a battery pack and a device including the same, and a battery pack according to an example embodiment of the present disclosure includes at least one battery module; a pack case that includes a case cover for covering the at least one battery module and a case tray coupled with an edge of the case cover; and a gasket that is arranged between the case cover and the case tray, wherein the gasket comprises a gasket flat part that is an area where the gasket extends without curvature, and a gasket corner part that is an area where the gasket is deformed to correspond to the shape of the pack case and is bent while having a curvature.

公开(公告)号：US20250038214A1

公开(公告)日：2025-01-30

申请号：US18917411

申请日：2024-10-16

Applicant: LG Energy Solution, Ltd.

Inventor： Sang A Choi ,  Seong Keun Jang ,  Sung Chul Park ,  Sung Soo Yoon

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04

Abstract: An insulating composition having excellent wet adhesion and a preparation method thereof are provided. Due to the excellent wet adhesion in a liquid electrolyte, there is an advantage in that migration of lithium ions in an overlay region of an electrode can be blocked to suppress capacity expression and the like.

公开(公告)号：US20250038165A1

公开(公告)日：2025-01-30

申请号：US18709217

申请日：2022-11-10

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Sue Jin KIM ,  Duk Hyun RYU ,  Kwanhee LEE ,  Jinsu JANG ,  Yunju LEE ,  Geunho PARK ,  Seungyeon SON

IPC: H01M4/04

Abstract: An electrode manufacturing device rolls and transfers a sheet-shaped electrode in which an active material layer is applied to at least any one of a metal foil with a first surface and a second surface which is a back surface of the first surface. At least any one of a rolling roll rolling the electrode and a travel roll rolling and then transferring the electrode comprises a base roll having a predetermined diameter, and having a base surface at an outer circumference thereof; and a step ring being coupled to the outer circumference of the base roll, and having a step surface a diameter of which is greater than a diameter of the base surface. The step ring is detachably coupled to the base roll. A thickness of a step differs from a thickness of the active material layer.

公开(公告)号：US12212164B2

公开(公告)日：2025-01-28

申请号：US18516920

申请日：2023-11-21

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： So Hee Kim ,  Nak Gi Sung ,  Joon Sung Bae

IPC: H02J7/00 ,  H01M10/44 ,  H01M4/04

Abstract: A secondary battery charging method includes a step for introducing a plurality of battery cells onto an activation tray and CC-charging the battery cells; and a step for connecting the plurality of battery cells in parallel. The charging method shortens the time typically required for CV-charging by connecting battery cells in parallel after CC-charging, thus having the effect of replacing CV-charging.

公开(公告)号：US12212000B2

公开(公告)日：2025-01-28

申请号：US17771211

申请日：2021-06-30

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jihoon Ahn ,  Taek Gyoung Kim

IPC: H01M4/58 ,  H01M4/04 ,  H01M10/052 ,  H01M4/02

Abstract: Disclosed is a positive electrode for a lithium-sulfur battery, including a current collector; and a positive electrode active material layer on the current collector, wherein the positive electrode active material layer includes a positive electrode active material and a binder, and the positive electrode active material layer has surface properties defined by the following Sa (arithmetic mean surface roughness of the positive electrode) and Sz (maximum height roughness of the positive electrode) ((i) 1 μm≤Sa≤5 μm, (ii) 10 μm≤Sz≤60 μm (wherein Sa is the average value of the distance from the middle surface of the surface irregularity structure of the positive electrode to the highest point and the lowest point of each irregularity part, and Sz means the distance from the lowest point to the highest point of the positive electrode)) and a method for manufacturing the same.

公开(公告)号：US12209805B2

公开(公告)日：2025-01-28

申请号：US17797468

申请日：2020-11-11

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Kyoung Ho Kim ,  Kyung Mee Lee ,  Hyun Jin Yang ,  Hyun Sup Lee ,  Won Chan Park ,  Myung Han Lee ,  Ji Eun Kim

IPC: F26B25/22 ,  F26B3/04 ,  F26B3/30 ,  G01N21/25 ,  G01N21/31 ,  G06T7/00 ,  G06T7/90 ,  H01M4/04

Abstract: The present invention relates to an electrode drying apparatus and an electrode drying method, and the electrode drying apparatus includes: an oven configured to provide a space in which the electrode is dried and to include a hot air nozzle or an infrared heater; a color coordinate measuring unit configured to be positioned at an outlet of the oven and measure a color coordinate value of an electrode active material layer with respect to the dried electrode; and a controller configured to analyze a drying result of the electrode from the color coordinate value, determine whether the electrode is defective in drying, and control a drying condition of the electrode.

公开(公告)号：US20250030254A1

公开(公告)日：2025-01-23

申请号：US18774390

申请日：2024-07-16

Applicant: LG Energy Solution, Ltd.

Inventor： Kiran KUMAR ,  Joseph Zahavi

IPC: H02J7/00

Abstract: A battery system includes a plurality of batteries including a plurality of chargeable battery cells, and a bus to which the plurality of batteries are selectively connected in parallel. A battery management system monitors operating limits of the chargeable battery cells of the plurality of batteries, generates a signal indicating that an operating limit of a chargeable battery cell of a battery among the plurality of batteries is being reached for a foldback operation of the battery, and initiates the foldback operation. A controller is configured to generate a signal to disconnect the battery associated with the signal of the battery management system from the bus.

公开(公告)号：US20250030121A1

公开(公告)日：2025-01-23

申请号：US18909797

申请日：2024-10-08

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Junghoon LEE ,  Junyeob SEONG ,  Hyemi JUNG

IPC: H01M50/383 ,  H01M50/211 ,  H01M50/276 ,  H01M50/282 ,  H01M50/30

Abstract: A battery pack can include a battery cell stack having a plurality of battery cells stacked in a first direction, and a battery cover covering the battery cell stack and having a first surface facing the battery cell stack and a second surface opposite to the first surface. The battery cover can include a venting part that extends from the first surface to the second surface of the battery cover, a barrier layer covers the venting part at the first surface of the battery cover, the barrier layer having an inner surface that is exposed to the battery cell stack, and a first refractory part positioned on an outer surface of the barrier layer that is opposite to the inner surface of the barrier layer.