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公开(公告)号：US11302919B2
公开(公告)日：2022-04-12
申请号：US15654648
申请日：2017-07-19
发明人： Jongmin Kim , Jiyoon Kim , Pilsang Yun , Donggyu Chang , Kwanghwan Cho , Jangsuk Hyun , Jinhwa Kim
摘要： Provided are a nickel-based active material, a method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.
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公开(公告)号：US20220102810A1
公开(公告)日：2022-03-31
申请号：US17416686
申请日：2019-08-09
发明人： Yongkyoung KIM , Gain KIM , Jungyoon LEE , Yeonjoo CHOI , Yangseob KIM
IPC分类号： H01M50/446 , H01M10/0525 , H01M50/449 , C08F220/56 , C08L33/12 , C09D133/12 , C09D133/26
摘要： The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery including the same, the separator including a porous substrate and a coating layer located on at least one surface of the porous substrate, wherein the coating layer includes a heat-resistant binder including a (meth)acrylic copolymer including a first structural unit derived from (meth)acrylamide, a second structural unit derived from (meth)acrylonitrile, and a third structural unit derived from (meth)acrylaminosulfonic acid, a (meth)acrylaminosulfonate or a combination thereof; an adhesive binder having a core-shell structure; and inorganic particles, wherein the adhesive binder has an average particle diameter of 0.2 μm to 1.0 μm, and the inorganic particles have an average particle diameter of 0.2 μm to 1.0 μm.
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公开(公告)号：US20220099873A1
公开(公告)日：2022-03-31
申请号：US17478522
申请日：2021-09-17
发明人： A Ra JO , Beom Deok LEE , Seon Gyeong JEONG , Seong Hoon LEE , Seung Mi SHIN , Wan Taek HONG
IPC分类号： G02B5/30 , G02F1/1335
摘要： A polarizing plate and an optical display including the same are provided. A polarizing plate includes: a polarizer; and a first protective layer and a second protective layer sequentially stacked on a surface of the polarizer, and the second protective layer includes a positive C retardation layer, the positive C retardation layer having a thickness of about 10 μm or less, an index of refraction of about 1.50 to about 1.55, and a glass transition temperature (Tg) of about 150° C. to about 250° C.
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公开(公告)号：US11280852B2
公开(公告)日：2022-03-22
申请号：US16742003
申请日：2020-01-14
发明人： Michael Erhart
摘要： A battery management unit for a battery system with a conductor or a busbar, the battery management unit including a printed circuit board, and a fluxgate current sensor including a magnetic core having a through-hole, at least one excitation winding, at least one compensation winding, and a sensor circuit configured to measure a magnetization of the at least one excitation winding, to generate a driving signal for driving the at least one compensation winding, to generate a current flowing through the at least one compensation winding according to the driving signal, and to generate an output signal corresponding to a magnitude of an electric current flowing through the through-hole of the magnetic core, wherein the magnetic core, the at least one excitation winding, the at least one compensation winding, and the sensor circuit are each integrated into the printed circuit board.
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公开(公告)号：US11276876B2
公开(公告)日：2022-03-15
申请号：US16780626
申请日：2020-02-03
发明人： Seung Ho Kwak , Joo Young Go
IPC分类号： H01M10/04 , H01M50/54 , H01M50/46 , H01M10/0583 , H01M50/417 , H01M50/466
摘要： A secondary battery includes: an electrode assembly including first electrode plates and second electrode plates alternately stacked with a separator therebetween, and first electrode tabs overlapping one another at a same position and outwardly protruding, the first electrode tabs being uncoated portions of the first electrode plates, and a fixing tape adhered between the separator positioned at each of opposite long side surfaces and outer surfaces of the first electrode tabs; a first collector portion welded to the first electrode tabs of the electrode assembly; and a case accommodating the electrode assembly and the first collector portion.
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公开(公告)号：US11276859B2
公开(公告)日：2022-03-15
申请号：US16560522
申请日：2019-09-04
发明人： Eunjoo Lee , Jaehou Nah
IPC分类号： H01M4/587 , H01M4/36 , H01M10/0525 , H01M4/02 , H01M4/133 , H01M4/1393
摘要： A negative active material for a rechargeable lithium battery includes natural graphite including secondary particles in which a plurality of primary particles are assembled; amorphous carbon on the surface of the primary particles; and a coating layer including amorphous carbon surrounding the secondary particles, wherein the primary particles have an average particle diameter of about 5 μm to about 15 μm, the secondary particles have an average particle diameter of about 8 μm to about 24 μm, and a peak intensity ratio I(002)/I(110) is less than or equal to about 120 as measured by X-ray diffraction.
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公开(公告)号：US20220077706A1
公开(公告)日：2022-03-10
申请号：US17411124
申请日：2021-08-25
发明人： Sesub SIM , Jongsam PARK
摘要： A charging system includes a battery pack including at least one battery cell and a battery management module, and a charger including a connector configured to detect a connection with the battery pack, a communicator configured to communicate with the battery management module, and a controller configured to control charging of the battery pack. The controller of the charger is configured to output a wake-up voltage when the connection with the battery pack is detected through the connector, receive a value of a battery voltage from the battery management module through the communicator, determine a charging start voltage based on the value of the battery voltage, and start charging the battery pack after outputting the charging start voltage.
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公开(公告)号：US20220075108A1
公开(公告)日：2022-03-10
申请号：US17464524
申请日：2021-09-01
发明人： Jun Mo KOO , Bong Choon KIM , Sang Hum LEE , Jung Hun YOU , Hee Seop KIM , Kwang Ho SHIN
摘要： A polarizing plate and an optical display including the same are provided. A polarizing plate includes a polarizer; and a first retardation layer and a second retardation layer sequentially stacked on a lower surface of the polarizer, and the first retardation layer has a degree of biaxiality (NZ) of less than 0 at a wavelength of 550 nm and is a non-liquid crystal layer, and the second retardation layer has a degree of biaxiality (NZ) of greater than 1 at a wavelength of 550 nm.
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公开(公告)号：US11271272B2
公开(公告)日：2022-03-08
申请号：US16664575
申请日：2019-10-25
发明人： Martin Weinberger , Martin Kraker , Matic Blaznik , Jörg Killmann
IPC分类号： H01M50/502 , H01M50/308
摘要： A battery module includes: a plurality of battery cells aligned with each other in an alignment direction; a plurality of busbars; an inlay molded to at least one of the busbars and having a height equal to or less than the at least one busbar; and a top cover on the busbars. Each of the battery cells includes a battery case, an electrode assembly in the battery case, a cap assembly on the battery case, a gas exhaust vent in the cap assembly, and cell terminals protruding over the cap assembly. Each of the busbars electrically connects the cell terminals of a group of the battery cells to each other. The top cover covers the cap assemblies, the busbars, and the inlay, and the busbars and the inlay form a support surface facing towards the top cover to support the top cover.
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公开(公告)号：US20220069808A1
公开(公告)日：2022-03-03
申请号：US17446575
申请日：2021-08-31
发明人： Keunyoung KIM , Hyun KIM , Jaesoon PARK , Sunho CHOI
摘要： A comparator circuit includes: a comparator comprising: a first input terminal receiving an input voltage; a second input terminal receiving a reference voltage; an output terminal outputting an output signal according to a result of a comparison between the input voltage and the reference voltage; and a power supply terminal receiving an operating voltage; and a mode controller applying a first operating voltage and a first reference voltage to the second input terminal and the power supply terminal of the comparator for a predetermined delay time in response to a supply of power being initiated from a power supply, and applying a second operating voltage and a second reference voltage to the second input terminal and the power supply terminal of the comparator in response to the delay time elapsing, wherein the first operating voltage is higher than a ground voltage and is lower than the second operating voltage.
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