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公开(公告)号：US20230121761A1
公开(公告)日：2023-04-20
申请号：US17967195
申请日：2022-10-17
发明人： Jae Won Lee , Jung Hoon Lee , Chul Haeng Lee , Yoo Sun Kang , Sol Ji Park
IPC分类号： H01M10/0567 , H01M10/0569 , H01M10/0568 , H01M10/052 , H01M4/525 , H01M4/485 , C07D233/60 , C07D493/04
摘要： The present disclosure relates to a lithium secondary battery including: a non-aqueous electrolyte including a lithium salt, an organic solvent, a first additive represented by Chemical Formula 1 and a second additive represented by Chemical Formula 2; a positive electrode including a positive electrode active material including a lithium composite transition metal oxide having a nickel content of 70 mol % or more among a total transition metal content; a negative electrode including an negative electrode active material; and a separator interposed between the positive electrode and the negative electrode.
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公开(公告)号：US12025578B2
公开(公告)日：2024-07-02
申请号：US17771163
申请日：2020-12-29
发明人： Jung Hoon Lee , Su Taek Jung , Seok Jin Kim , Ji Hoon Lee , Sang Hyun Koo
CPC分类号： G01N27/20 , B23K26/21 , B23K31/125 , H01M10/48 , H01M50/536
摘要： A method for inspecting a welding defect of the present invention includes: a threshold resistance setting step (S100) of measuring a resistance of a welded portion of a sample group and deriving a threshold resistance value which becomes an evaluation standard of a weak welding; a resistance measuring step (S200) of measuring a resistance value of a welded portion to be inspected; and a step (S300) of determining as a weak welding if the resistance value measured in the resistance measuring step exceeds the threshold resistance value, wherein the threshold resistance setting step (S100) and the resistance measuring step (S200) include measuring a resistance using a microresistance measuring instrument having a resolution of nanoohm to microohm units.
The welding defect inspection method of the present invention shows excellent detection power for the welding defect by a weak welding.-
公开(公告)号：US20240162731A1
公开(公告)日：2024-05-16
申请号：US18284372
申请日：2022-09-26
发明人： Taeki Um , Seungjin Kong , Jung Hoon Lee
CPC分类号： H02J7/0045 , B60L53/30 , H02J7/00047
摘要： A battery charger according to one embodiment of the present disclosure includes a charging space in which an inserted battery is charged and a support space that supports the inserted battery. The battery charger includes a seating part on which the battery inserted into the charging space is seated, and a guide part that guides the position of the battery seated on the seating part. The guide part extends into the charging space from the support space, and is movable from the charging space toward the support space by an external force.
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公开(公告)号：US20240091884A1
公开(公告)日：2024-03-21
申请号：US18283254
申请日：2022-04-19
发明人： Jung Hoon Lee , Seok Jin Kim
摘要： A device for inspecting a welded state between a tab, which protrudes from a plurality of electrodes stacked with a separator therebetween, and a lead welded to the tab. The device for inspecting a welded state may include a pair of tab probes, which are in contact with the tab and spaced apart from each other in a width direction of the tab, and a pair of lead probes which are in contact with the lead and spaced apart from each other in a width direction of the lead. Related methods for inspecting the welded state between a tab and a lead thereby are provided.
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公开(公告)号：US11967679B2
公开(公告)日：2024-04-23
申请号：US17291263
申请日：2019-11-06
发明人： Kyoung Ho Ahn , Jung Hoon Lee , Won Kyung Shin , Jae Won Lee , Min Jung Kim , Chul Haeng Lee
IPC分类号： H01M10/0565 , H01M10/0525
CPC分类号： H01M10/0565 , H01M10/0525 , H01M2300/0082 , H01M2300/0085
摘要： The present invention relates to a composition for a gel polymer electrolyte, which includes a lithium salt, a non-aqueous organic solvent, a polymerization initiator, and an oligomer containing a polycarbonate-based repeating unit, a gel polymer electrolyte in which mechanical strength and ion transfer capability are improved by polymerization of the composition for a gel polymer electrolyte, and a lithium secondary battery in which external impact and stability during high-temperature storage are improved by including the gel polymer electrolyte.
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公开(公告)号：US20240030441A1
公开(公告)日：2024-01-25
申请号：US18024437
申请日：2021-09-16
发明人： Ji Hoon Ryu , Bum Young Jung , Jung Hoon Lee , Yeo Min Yoon , Jae Won Lee , Yong Hee Kang
IPC分类号： H01M4/62 , H01M10/0525 , H01M10/0565 , H01M4/505 , H01M4/525 , H01M10/058 , H01M4/04 , H01M4/131 , H01M4/1391
CPC分类号： H01M4/62 , H01M10/0525 , H01M10/0565 , H01M4/505 , H01M4/525 , H01M10/058 , H01M4/0404 , H01M4/131 , H01M4/1391 , H01M2004/028
摘要： Provided are a lithium secondary battery and a manufacturing method thereof capable of improving the lifespan properties and high-temperature storage properties of the lithium secondary battery, wherein the lithium secondary battery includes a positive electrode including a positive electrode active material layer containing a positive electrode active material and one or more additives selected from succinonitrile (SN), propane sultone (PS), and propene sultone (PRS). The lithium secondary battery further includes a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a gel polymer electrolyte, wherein the additive is included in an amount of 0.2 parts by weight to 5.0 parts by weight based on 100 parts by weight of the positive electrode active material layer.
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公开(公告)号：US20240250319A1
公开(公告)日：2024-07-25
申请号：US18560701
申请日：2022-12-27
发明人： Tae Ki Um , Seung Jin Kong , Jae Hun Yang , Jung Hoon Lee , Se Ho Kim , Doo Seung Kim , Jeong Gi Park
IPC分类号： H01M10/44 , H01M10/613 , H01M10/615 , H01M10/63 , H01M10/6569
CPC分类号： H01M10/441 , H01M10/613 , H01M10/615 , H01M10/63 , H01M10/6569
摘要： A battery pack includes a battery pack; a charging housing having an inlet, an outlet, and a pack insertion space into which the battery pack is insertable; a charging part electrically connected to the battery pack inserted into the pack insertion space, for charging the battery pack; a circulation part configured to supply cooling water supplied to the pack insertion space through the inlet and recover cooling water from the pack insertion space through the outlet; a heating part configured to heat to the pack insertion space; and a control part for controlling the charging part, the heating part, and the circulation part.
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公开(公告)号：US12047772B2
公开(公告)日：2024-07-23
申请号：US17604976
申请日：2020-11-30
发明人： Jung Hoon Lee , Yean Sik Choi , Sung Gun Lee
CPC分类号： H04W12/06 , B60L1/00 , B60L50/60 , B60L53/80 , B60L58/10 , H02J7/00045 , H04W4/80 , B60Y2200/126
摘要： The present invention relates to a method of turning on an electric scooter by supplying power to the ECU when the interchangeable battery pack is driven by eliminating the auxiliary battery that always supplies power to the ECU that turns on the start of the electric scooter, providing an interchangeable battery packs using wireless communication type, and using a wireless communication signal received from a smart device as a driving signal of the interchangeable battery pack.
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公开(公告)号：US20240234901A1
公开(公告)日：2024-07-11
申请号：US18580877
申请日：2023-01-17
发明人： Jung Hoon Lee , Dooseung Kim , Jaehun Yang
IPC分类号： H01M50/242 , H01M50/211 , H01M50/264
CPC分类号： H01M50/242 , H01M50/211 , H01M50/264
摘要： A battery pack according to one embodiment of the present disclosure includes a battery module including a plurality of battery cells; a pack case that houses the battery module; and a pair of pressure members that are arranged in the pack case, wherein the battery module is located between the pair of pressure members. The battery module is forcibly inserted between the pair of pressure members, and configured such that a pressing force is applied to the battery module by the pair of pressure members.
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公开(公告)号：US11955609B2
公开(公告)日：2024-04-09
申请号：US18036059
申请日：2022-09-06
发明人： Jung Hoon Lee , Chul Haeng Lee , Yoo Sun Kang , Sol Ji Park , Jae Won Lee
CPC分类号： H01M10/44 , H01M10/4235
摘要： A method of activating a secondary battery includes an operation of deriving a reduction reaction voltage according to an electrolyte additive, a pre-charging operation of pre-charging the secondary battery into which an electrolyte containing the electrolyte additive is injected, and a pre-aging operation of wetting an electrode assembly accommodated in the secondary battery with the injected electrolyte and aging the electrode assembly. A charging termination voltage in the pre-charging operation is less than the reduction reaction voltage.
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