公开(公告)号：US12176745B2

公开(公告)日：2024-12-24

申请号：US17774094

申请日：2020-08-05

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Sang-Woo Ryu ,  Jee-Soon Choi ,  Dal-Mo Kang ,  Yong-Seok Choi

IPC: H02J7/00 ,  G01K3/00 ,  G01R31/00 ,  G01R31/385 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48

Abstract: A forced discharge test apparatus includes a heating circuit; a discharge circuit; a temperature sensor; and a controller. When the controller receives a test command indicating a test resistance and a test temperature, the controller outputs a first control signal to the heating circuit to increase the temperature of a battery cell. The controller outputs a second control signal to the discharge circuit to discharge the battery cell when the temperature of the battery cell reaches the set test temperature. The controller determines that the test temperature is valid with respect to the test resistance when the temperature of the battery cell is equal to or lower than the upper temperature limit at a time point at which a predetermined heating time has passed from a time point when the first control signal is outputted.

公开(公告)号：US12176557B2

公开(公告)日：2024-12-24

申请号：US17601200

申请日：2020-07-10

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jonghwa Choi ,  Junyeob Seong ,  Myungki Park ,  Jee Hoon Jeong

IPC: H01M50/209 ,  H01M10/653

Abstract: A battery module includes a battery cell stack in which a plurality of battery cells are stacked; and a module frame for housing the battery cell stack. The module frame includes a first module frame having an opened upper part and a second module frame having an opened lower part. The first module frame includes a first side surface part, a second side surface part, and a bottom part for connecting the first side surface part and the second side surface part, wherein the second module frame includes a third side surface part, a fourth side surface part, and a ceiling part for connecting the third side surface part and the fourth side surface part. The first module frame and the second module frame surround the battery cell stack in a state where the first side surface part and the third side surface part are overlapped, and the second side surface part and the fourth side surface part are overlapped.

公开(公告)号：US12176553B2

公开(公告)日：2024-12-24

申请号：US17429152

申请日：2020-03-27

Applicant: LG Energy Solution, Ltd.

Inventor： Do Hwa Jung ,  Chan Ki Park ,  Do Yeon Kwon ,  Sung Hwan Kim ,  Ho Young Kim

IPC: H01M50/186 ,  H01M50/105 ,  H01M50/178 ,  H01M50/533

Abstract: A sealing device for a secondary battery, the sealing device configured to seal a sealing part of a pouch through which an electrode lead extends according to the present invention comprises: a lower sealing tool configured to receive the sealing part of the pouch seated thereon; and an upper sealing tool configured to press and seal the sealing part of the pouch, wherein the lower sealing tool comprises: a lower fixed block configured to receive the sealing part of the pouch seated on a top surface thereof; and one or more lower detachable blocks detachably coupled to the lower fixed block and configured to support a portion of the sealing part through which the electrode lead does not extend.

公开(公告)号：US12176528B2

公开(公告)日：2024-12-24

申请号：US18191266

申请日：2023-03-28

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Hyun-Woong Yun ,  Jong-Keon Yoon

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/134 ,  H01M4/62 ,  H01M10/052 ,  H01M4/02 ,  H01M4/86 ,  H01M10/0525

Abstract: A negative electrode for a lithium metal battery which includes: a current collector; a negative electrode active material layer formed on the surface of a current collector; a heat conductive layer formed on a surface of the negative electrode active material layer wherein the heat conductive layer comprises a heat conductive material having a heat conductivity of 25 W/m·K to 500 W/m·K; and a protective layer formed on a surface of the heat conductive layer, wherein the protective layer includes at least one of a porous polymer layer and a ceramic layer. An electrochemical device including the negative electrode for a lithium metal battery. The negative electrode for a lithium metal battery includes a heat conductive layer and a protective layer, and can inhibit growth of lithium dendrite in a negative electrode for a lithium metal battery and improve the cycle life of an electrochemical device.

公开(公告)号：US12174262B2

公开(公告)日：2024-12-24

申请号：US17267534

申请日：2020-02-27

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Yoon-Jung Bae ,  A-Ming Cha

IPC: G01R31/392 ,  G01R31/36 ,  G01R31/3835 ,  G01R31/396 ,  H01M10/48 ,  H02J7/00

Abstract: A battery management apparatus for changing a control condition according to a degradation pattern in a charge situation of a battery cell. Since not only the degradation degree of the battery cell but also the degradation acceleration degree of the battery cell is estimated, the present degradation state of the battery cell may be more accurately estimated, and the future degradation state of the battery cell may also be predicted more accurately.

公开(公告)号：US12174137B2

公开(公告)日：2024-12-24

申请号：US17769860

申请日：2021-02-08

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Jung Hoon Lee ,  Su Taek Jung ,  Seok Jin Kim ,  Ji Hoon Lee ,  Sang Hyun Koo

IPC: G01N27/20 ,  B23K31/12 ,  G01N27/04 ,  G01N33/207 ,  H01M10/052 ,  H01M10/42 ,  H01M10/48 ,  H01M50/536 ,  B23K101/36

Abstract: The present invention provides an apparatus for inspecting a welding state in a welded portion for an electronic or mechanical coupling in a lithium secondary battery, the apparatus including: a measuring unit configured to obtain data for deriving a resistance value of the welded portion by allowing a resistance measuring probe to contact the welded portion; and a controller configured to communicate with the measuring unit, determine the resistance value of the welded portion by receiving the data obtained from the measuring unit, and determine whether a weak welding was performed by comparing the determined resistance value with a threshold resistance value, in which the measuring unit is configured to allow the resistance measuring probe to contact one end and the other end of the welded portion.

公开(公告)号：US20240421622A1

公开(公告)日：2024-12-19

申请号：US18727808

申请日：2023-04-19

Applicant: LG Energy Solution, Ltd.

Inventor： Dong In Choi

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/48

Abstract: A battery control apparatuses may include a measuring unit for measuring a voltage of a battery, a memory for storing a multi-stage charging protocol data, and a processor for identifying a SOC of the battery based on the voltage measurement value. The processor may perform a temporary discharging procedure, when the SOC of the battery reaches the first criterion SOC while the constant current charging procedure using the first current rate is in progress. The processor may also determine an adjusted second current rate different from the second current rate based on discharging information of the temporary discharging procedure and, after the temporary discharging procedure is finished, perform a constant current charging procedure using the adjusted second current rate.

公开(公告)号：US20240421437A1

公开(公告)日：2024-12-19

申请号：US18561082

申请日：2022-10-28

Applicant: LG Energy Solution, Ltd.

Inventor： Dong Hun Bae ,  Ji Eun Kim ,  Hwan Ho Shin

IPC: H01M50/491 ,  H01M4/62 ,  H01M50/434 ,  H01M50/443

Abstract: The present invention provides an electrode assembly in which positive electrodes and negative electrodes are alternately stacked with separators interposed therebetween and which includes two or more types of separators having different temperatures at which adhesion is maximized, wherein the temperature at which the adhesion of the separators, positioned in the central portion of the electrode assembly, to the electrodes is maximized is lower than the temperature at which the adhesion of the separators, positioned in the other regions, to the electrodes is maximized, and also a secondary battery including the electrode assembly.

公开(公告)号：US20240421423A1

公开(公告)日：2024-12-19

申请号：US18700613

申请日：2022-10-26

Applicant: LG Energy Solution, Ltd.

Inventor： Giyoung Choi ,  Suhang Lee ,  Yongil Kim ,  Yuhan Noh ,  Dongwook Kim ,  Yonghwan Kwon

IPC: H01M50/383 ,  H01M50/105 ,  H01M50/178 ,  H01M50/184 ,  H01M50/211

Abstract: A secondary battery includes: an electrode assembly; and a pouch-type casing in which the electrode assembly is disposed. The pouch-type casing includes upper and lower casings thermally bonded to each other, in which the pouch-type casing includes a sealing part formed along at least a part of an edge of the pouch-type casing. Electrode leads are connected to the electrode assembly and protrude from sides of the pouch-type casing. The sealing part may include a notch portion formed at an end of any one of the sides from which the electrode leads protrude, and the notch portion may have a curvature that is recessed toward the inside of the pouch-type casing.

公开(公告)号：US20240421391A1

公开(公告)日：2024-12-19

申请号：US18722855

申请日：2022-12-22

Applicant: LG Energy Solution, Ltd.

Inventor： Soo Ji Hwang ,  Dae Woong Song ,  Sang Hun Kim ,  Hyung Kyun Yu ,  Min Hyeong Kang ,  Hun Hee Lim

IPC: H01M50/129 ,  H01M50/105 ,  H01M50/119 ,  H01M50/121 ,  H01M50/133

Abstract: Disclose herein is a pouch film laminate body including a gas barrier layer, a base layer disposed on one surface of the gas barrier layer, and a sealant layer disposed on the other surface of the gas barrier layer. A loop stiffness of the pouch film laminate body in machine direction of the pouch film laminate body may be 750 mN to 1300 mN.