Coil And Core Patents (Class 336/221)
  • Patent number: 10573969
    Abstract: A wireless communication antenna includes a solenoid coil portion including a core; and a magnetic body disposed in the core and comprising magnetic pieces arranged side by side in a direction perpendicular to or a direction parallel to a direction of a magnetic flux of the coil portion.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: February 25, 2020
    Assignee: WITS Co., Ltd.
    Inventors: Jae Hyuk Jang, Young Seung Roh, Hyun Jung Lee, Gie Hyoun Kweon, Jae Sun Won
  • Patent number: 10541063
    Abstract: A power inductor includes a core and winding. The winding has at least two portions, one made of pure copper and the other made of a low-TCR (temperature coefficient of resistance) alloy, wherein the alloy portion is used to form a current sensor. The two portions are joined to provide a unitary winding. The inductor can provide accurate current detection sensor while minimizing total resistance of the winding.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: January 21, 2020
    Assignee: Bel Fuse (Macao Commercial Offshore) Limited
    Inventor: Zhao Tang
  • Patent number: 10519531
    Abstract: According to aspects of the present disclosure, a ternary alloy includes a dual-phase microstructure including a first phase and a second phase. The first phase defines a hexagonal close-packed structure with a stoichiometric ratio of Al4Fe1.7Si. The second phase defines a face-centered cubic structure with a stoichiometric ratio of Al3Fe2Si. The dual-phase microstructure is stable above about 800° C., and the dual-phase microstructure has a first-phase abundance greater than about 50 parts by weight and a second-phase abundance less than about 50 parts by weight based on 100 parts by weight of the ternary alloy.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: December 31, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Zhongyi Liu, Frederick E. Pinkerton
  • Patent number: 10366820
    Abstract: A thin film inductor 1 includes: a coil part that is formed of at least one coil conductor layer and has terminal electrodes provided at both ends thereof; a first insulating layer that covers the coil part; and a second insulating layer that covers the first insulating layer and has a higher Young's modulus than the first insulating layer.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: July 30, 2019
    Assignee: TDK CORPORATION
    Inventor: Kazuo Ishizaki
  • Patent number: 10361026
    Abstract: A wireless power transmitting apparatus including a first transmitting coil; a second transmitting coil; a third transmitting coil on the first transmitting coil and the second transmitting coil; and a substrate to accommodate the first transmitting coil, the second transmitting coil, and the third transmitting coil, further the substrate includes a wall to surround a part of an outer circumference of the first transmitting coil and a part of an outer circumference of the second transmitting coil; a first protrusion to surround a first part of an outer circumference of the third transmitting coil; and a second protrusion to surround a second part of the outer circumference of the third transmitting coil.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: July 23, 2019
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Jay Park, Soon Young Hyun
  • Patent number: 10355418
    Abstract: A noise reduction unit (100) is equipped with a noise filter (10), a housing (80) which houses the noise filter, and a sealing material (90) which is charged in the housing. The noise filter is equipped with conductors (20) having respective winding portions (21) and a ring-shaped core (30) which is made of a magnetic material and is inserted through the winding portions of the conductors. In the housing, a mounting portion (83) for the ring-shaped core has recesses (84) that are recessed in a direction going away from the ring-shaped core and support portions (83b) that support the ring-shaped core so that gaps (S) are formed between the ring-shaped core and the bottom surfaces of the respective recesses. The sealing material goes into the gaps and comes into contact with both of the ring-shaped core and the bottom surfaces of the recesses in the mounting portion.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: July 16, 2019
    Assignees: YAZAKI CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hayato Iizuka, Kazuma Kayo, Hiroshi Aihara
  • Patent number: 10186764
    Abstract: An antenna device including: a core formed by a magnetic material; a terminal attachment unit which is arranged on one end side of the core and concurrently, which is provided with an opening portion of penetration-state; a coil which is arranged on the outer-peripheral side of the core and concurrently, which is formed by winding a conductive wire; and at least a pair of terminal members which are attached to the terminal attachment unit and concurrently, which are provided with a chip-support-piece portion positioned at the opening portion and concurrently electrically connected to an electronic component while being equipped with aforesaid electronic component having a chip-shape, wherein for the chip-support-piece portion, there is provided a positioner which carries out the positioning of the electronic component.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: January 22, 2019
    Assignee: SUMIDA CORPORATION
    Inventors: Shuichi Kikuchi, Kei Tanaka, Takanobu Rokuka, Shigeru Mahara, Noriaki Iwasaki, Yoshinori Miura, Hiroshi Kawasaki
  • Patent number: 10074891
    Abstract: A thin, flexible antenna module is provided for use in a smartphone. When the antenna module is assembled in the smartphone, the antenna module provides an MST antenna and an NFC antenna. For this, the antenna module includes a flexible PCB containing coils and further includes a magnetic sheet engaged with flexible PCB. The flexible PCB and the magnetic sheet are attached to each other to form a single body.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: September 11, 2018
    Assignee: AQ CORPORATION
    Inventors: Young Sung Kang, Jung Min Kim, Kyoung Jun Choi, Sang Hoon Lee
  • Patent number: 9966177
    Abstract: A reactor includes a core made of a magnetic material; a resin mold that encloses the core; a coil that is wound around the core through the resin mold; a plurality of fasteners located on the resin mold; and a supporting member that is secured to the resin mold through the fasteners. At least one of the plurality of fasteners is a flexible fastener.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: May 8, 2018
    Assignee: TAMURA CORPORATION
    Inventor: Kotaro Suzuki
  • Patent number: 9959964
    Abstract: A thin film magnet (TFM) three-dimensional (3D) inductor structure may include a substrate with conductive vias extending through the substrate. The TFM 3D inductor structure may also include a magnetic thin film layer on at least sidewalls of the conductive vias and on a first side and an opposing second side of the substrate. The TFM 3D inductor structure may further include a first conductive trace directly on the magnetic thin film layer on the first side of the substrate and electrically coupling to at least one of the conductive vias. The TFM 3D inductor structure also includes a second conductive trace directly on the magnetic thin film layer on the second side of the substrate and coupled to at least one of the conductive vias.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: May 1, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Changhan Hobie Yun, David Francis Berdy, Daeik Daniel Kim, Chengjie Zuo, Jonghae Kim, Je-Hsiung Jeffrey Lan, Mario Francisco Velez, Niranjan Sunil Mudakatte
  • Patent number: 9871383
    Abstract: Provided is a wireless power transmitting apparatus of a wireless charging system. The wireless power transmitting apparatus of the wireless charging system according to an embodiment of the present invention includes a transmitting coil and a soft magnetic substrate having one side configured to accommodate the transmitting coil, and a groove corresponding to a shape of the transmitting coil is formed in the one side configured to accommodate the transmitting coil.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: January 16, 2018
    Assignee: LG INNOTEX CO., LTD.
    Inventors: Jay Park, Soon Young Hyun
  • Patent number: 9837832
    Abstract: A wireless power transfer device including a first coil having a first portion, and configured to generate a magnetic field, and a second coil having a second portion. The second coil positioned with respect to the first coil such that the first portion of the first coil overlaps the second portion of the second coil in an overlap region. The wireless power transfer device also includes a power amplifier electrically coupled to one selected from a group consisting of the first coil and the second coil, and a flux concentrator aligned with the overlap region and configured to concentrate a magnetic flux of the magnetic field. The power amplifier configured to output a drive signal.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: December 5, 2017
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Teik Siew Tan, Chee Khon Chong, Sin Keng Lee
  • Patent number: 9824805
    Abstract: A coil unit for an electric vehicle for the inductive transfer of electrical energy between the coil unit and a stationary charging station. The coil unit includes at least one coil and a flux guide unit for guiding a magnetic flux occurring during operation of the coil. Also disclosed is an electric vehicle having a coil unit for the inductive transfer of electrical energy between a secondary coil of the coil unit and a primary coil of a charging station. The disclosed coil solves the problem of allowing the safe use of the inductive electrical energy transfer in electric vehicles, in particular motor vehicles, by proposing a coil unit, in which the flux guide unit has material weakenings, and an electric vehicle having such a coil unit.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: November 21, 2017
    Assignee: CONDUCTIX-WAMPFLER GMBH
    Inventors: Mathias Wechlin, Pascal Asselin, Andrew Green
  • Patent number: 9813117
    Abstract: A vehicle inductive power assembly and method for transferring electrical power inductively to an electrical device, in a motorized vehicle. The system includes an inductive power transfer system which is configured to provide the electrical power to the electrical device as well as a communications security system which is configured to establish a secure communications channel between the inductive power transfer system and the electrical device. Following activation of the inductive power transfer system, the communications security system initiates a handshaking procedure between the inductive power transfer system and the electrical device. If the handshaking procedure is successful the communications security system instructs the inductive power transfer system to commence providing the electrical power to the electrical device.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 7, 2017
    Assignee: POWERMAT TECHNOLOGIES LTD.
    Inventors: Rotem Shraga, Arye Nudelman, Ilya Gluzman, Assaf Gad
  • Patent number: 9768510
    Abstract: There are included a core 20 formed from a magnetic material; a terminal mounting unit 80 arranged on one end portion side of core 20; a coil 40 which is arranged on the outer circumferential side of core 20 and concurrently which is formed by winding a conductive wire 41; and a plurality of terminal members 70 which are mounted on terminal mounting unit and concurrently which are electrically connected with a terminal end of conductive wire 41 or with an electronic component at any position, wherein at terminal mounting unit 80, there are provided a plurality of mounting grooves 81 for plugging-in terminal members 70.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: September 19, 2017
    Assignee: SUMIDA CORPORATION
    Inventors: Kei Tanaka, Takanobu Rokuka, Hitoshi Moriya, Shigeru Mahara, Noriaki Iwasaki, Masakazu Fukuoka, Yoshinori Miura
  • Patent number: 9698606
    Abstract: A wireless power transmission antenna apparatus (100, 200) is mounted on a wireless power transmitting apparatus configured to transmit electric power in a wireless manner, and is provided with: an antenna coil (10) obtained by winding a conductive member; a plurality of plate-like members (21, 22, 23, 24), each containing metal and disposed in surroundings of the antenna coil and in a radial direction of the antenna coil; and a housing case (30) containing metal and configured to accommodate therein the antenna coil and the plurality of plate-like members. The plate-like member is disposed such that a plate face thereof crosses a direction of extension of the conductive member. According to the wireless power transmission antenna apparatus, it is possible to improve power transmission efficiency while complying with radio wave protection guidelines.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: July 4, 2017
    Assignee: PIONEER CORPORATION
    Inventor: Tomoyuki Fujieda
  • Patent number: 9691538
    Abstract: A magnetic device includes a magnetic core, one or more first windings, and one or more second windings. Each first winding forms a respective first turn around a respective first winding center axis, and each second winding forms a respective second turn around a common second winding center axis that is orthogonal to each first winding center axis. Another magnetic device includes a magnetic core, a plurality of first windings forming respective first winding turns, and a second winding forming a second winding turn. Each first winding turn is within the second winding turn, as seen when the magnetic device is viewed cross-sectionally in a first direction. Yet another magnetic device includes a magnetic core, one or more first windings, and one or more second windings magnetically isolated from the one or more first windings.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: June 27, 2017
    Assignee: Volterra Semiconductor LLC
    Inventors: Alexandr Ikriannikov, Anthony J. Stratakos
  • Patent number: 9680329
    Abstract: The invention relates to an inductive wireless charging system comprising a charger, a chargeable mobile device, a first coil for or in the charger, and a second coil for or in the chargeable mobile device, wherein each of the first and the second coil comprises a core part consisting of a soft magnetic material, and each of the first and the second coil is embedded in a polymer bonded soft magnetic material. The invention also relates to a charger, respectively a chargeable mobile device for an inductive wireless charging system, comprising at least one coil comprising a core part consisting of a soft magnetic material, wherein the coil is embedded in a polymer bonded soft magnetic material.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: June 13, 2017
    Assignee: DSM IP ASSETS B.V.
    Inventors: Robert Hendrik Catharina Janssen, Carel Frederik Constantijn Fitié
  • Patent number: 9672978
    Abstract: A wireless power transmission antenna apparatus (100, 200) is mounted on a wireless power transmitting apparatus configured to transmit electric power in a wireless manner, and is provided with: an antenna coil (10) obtained by winding a conductive member; and a plate-like member (21, 22, 23, 24) containing metal, disposed in surroundings of the antenna coil and in a radial direction of the antenna coil. The plate-like member is disposed such that a plate face thereof crosses a direction of extension of the conductive member. According to the wireless power transmission antenna apparatus, it is possible to improve power transmission efficiency while complying with radio wave protection guidelines.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: June 6, 2017
    Assignee: PIONEER CORPORATION
    Inventor: Tomoyuki Fujieda
  • Patent number: 9607755
    Abstract: The inductor core has a higher magnetic permeability than air, and includes an endless channel adapted for containing an inductor winding, where the inductor core extends along a first axis A, and the inductor winding extends completely around the first axis A of the inductor core in such a way that the inductor winding has a number of discrete positions or first sections where it extends in a direction being perpendicular to the first axis A of the inductor core, and wherein the inductor winding, between the discrete positions or first sections, has second sections where it extends at least partly along the first axis A.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: March 28, 2017
    Assignee: HOGANAS AB (PUBL)
    Inventor: Lars-Olov Pennander
  • Patent number: 9607756
    Abstract: A transformer includes a primary winding; a secondary winding; a first electrostatic screen located between the primary winding and the secondary winding and most proximate to the primary winding; and a second electrostatic screen located between the primary winding and the secondary winding and most proximate to the secondary winding. The first electrostatic screen is electrically connectable to a power supply electrically connectable to the primary winding and the second electrostatic screen is electrically connectable to a load electrically connectable to the secondary winding. The invention also includes an inverter system including the transformer.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: March 28, 2017
    Assignee: E2V TECHNOLOGIES (UK) LIMITED
    Inventor: Robert Richardson
  • Patent number: 9558879
    Abstract: The present invention provides a teardrop-shaped magnetic core having excellent manufacturing efficiency, a large initial inductance, and stable DC superposition characteristics and a coil device using this teardrop-shaped magnetic core. A teardrop-shaped magnetic core according to the present invention is a magnetic core that is made from a magnetic material and is to be used in a coil device 20, the magnetic core including a first rectilinear portion 11 and a second rectilinear portion 15 that have a straight-line shape and are connected to each other at one end via a bent portion 16 that is bent at a right angle, and a circular arc portion 17 that has a circular arc shape and connects the first rectilinear portion and the second rectilinear portion to each other at the other end. A coil device according to the present invention is configured by winding a wire around the teardrop-shaped magnetic core 10.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: January 31, 2017
    Assignee: SHT Corporation Limited
    Inventors: Tsunetsugu Imanishi, Hitoshi Yoshimori
  • Patent number: 9509173
    Abstract: A wireless power transmission and charging system and method are provided. The wireless power may refer to energy that may be transferred from a wireless power transmitter to a wireless power receiver. The wireless power transmission and charging system may include a source device to wirelessly transmit power, and a target device to wirelessly receive power.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: November 29, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park
  • Patent number: 9490656
    Abstract: A method of making a wireless charging coil. More specifically, a method of making a wireless charging coil is provided comprising stamping a metal sheet to form a first coil having a first spiral trace, applying the first stamped coil to a first laminate, stamping a metal sheet to form a second coil having a second spiral trace, applying the second stamped coil to a second laminate, interpositioning the first stamped coil and the second stamped coil to form a planar coil assembly, the first stamped coil and the second stamped coil positioned between the first and second laminates, heating and pressing the planar coil assembly to displace and set the adhesive of the first and second laminates to surround and bond together the first and second coils.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: November 8, 2016
    Assignee: A.K. Stamping Company, Inc.
    Inventors: Arthur Kurz, Bernard Duetsch, Joshua Kurz
  • Patent number: 9424976
    Abstract: A reactor includes a core made of a magnetic material; a resin mold that encloses the core; a coil that is wound around the core through the resin mold; a plurality of fasteners located on the resin mold; and a supporting member that is secured to the resin mold through the fasteners. At least one of the plurality of fasteners is a flexible fastener.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: August 23, 2016
    Assignee: TAMURA CORPORATION
    Inventor: Kotaro Suzuki
  • Patent number: 9369060
    Abstract: A power generation system includes an input to receive a low-voltage alternating current and a number N of voltage-conversion modules coupled to the input, each electrically connected in series. Each voltage-conversion module includes a transformer configured to convert the low-voltage alternating current into a high-voltage alternating current. Each voltage-conversion module includes a multiplier configured to convert the high-voltage alternating current from the transformer into a high-voltage direct current. The multiplier includes a positive multiplier part and a negative multiplier part. The positive multiplier part and the negative multiplier part each includes a pair of input terminals connected in parallel with the transform and at least one multiplier stage comprising a single diode and a capacitor assembly. The number N is an even number between 4 and 24.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: June 14, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Saijun Mao, Denis Perrillat-Amede, Philippe Ernest, Niranjan Kumar, Xu Chu
  • Patent number: 9167682
    Abstract: An electronic component includes a circuit board that includes a ground terminal connected to a ground potential, a coil component that is assembled on the circuit board, the coil component includes a T-shaped core and an air-core coil, a ground connection electrode that is assembled on the circuit board next to the coil component and that is connected to the ground terminal, and a mixture of a metal composite magnetic material and a resin that is formed on the circuit board and that covers the coil component and the ground connection electrode as a package. A part of the ground connection electrode is exposed outside the mixture.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: October 20, 2015
    Assignee: Sumida Corporation
    Inventors: Mitsugu Kawarai, Douglas James Malcolm
  • Publication number: 20150145632
    Abstract: A coil unit in which impact resistance is ensured and that has a magnetic body for heating prevention. The coil unit (the power receiving coil unit) includes a winding wire (the winding wire portion) and a magnetic body, wherein in the magnetic body, a plurality of individual pieces with two principle surfaces opposing in a thickness direction are disposed in rows and columns in a direction substantially orthogonal to the thickness direction, and the two principle surfaces are in a polygonal shape and all interior angles forming a polygon are obtuse angles (except for a right angle).
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventors: Narutoshi FUKUZAWA, Toshinori MATSUURA
  • Patent number: 9041500
    Abstract: A magnetic core includes a first core having a predetermined magnetic permeability and a second core formed of the same material as the first core. The second core forms a closed magnetic circuit together with the first core. The second core is configured to radiate heat through a heat radiating unit. At least one of the first core and the second core is configured to be wound with a coil. The magnetic core includes a third core that is arranged between the first core and the second core and has a lower magnetic permeability than the first core.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: May 26, 2015
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Sergey Moiseev
  • Patent number: 9035736
    Abstract: A magnetic device is provided. The magnetic device includes a magnetic core and a conductive winding inductively coupled to the magnetic core. The conductive winding includes a first terminal segment, a second terminal segment, and an inductive segment electrically coupled in series therebetween. The first terminal segment includes a current sensing element.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: May 19, 2015
    Assignee: General Electric Company
    Inventors: Joao Luiz Andres, John F. Steel, Robert James Catalano, Loc Ngo
  • Patent number: 9030284
    Abstract: A combined structure of hollow bobbin and conductive sheet for a transformer includes a hollow bobbin and at least one conductive sheet. The hollow bobbin includes an outer surface and at least one positioning structure formed on the outer surface. The conductive sheet is fit on the outer surface of the hollow bobbin and includes a main body and at least one engaging structure. The main body has a hollow portion, making the main body to have an inner circumference. The engaging structure is formed on the inner circumference of the main body and is engaged with the positioning structure of the hollow bobbin. The transformer includes at least one winding disposed on the outer surface of the hollow bobbin and abutting against the conductive sheet.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: May 12, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Zhi-Liang Zhang, Ching-Hsien Teng, Yu-Liang Hung
  • Publication number: 20150123761
    Abstract: A rod-shaped magnetic core element, having a first end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion, and a second end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion so that a bent connection of at least two magnetic core elements is variably adjustable. Magnetic core elements comprising spherical or cylindrical magnetic core ends of this type allow a nearly gap-free construction with little magnetic leakage due to slightly larger end surfaces in comparison with ferrite rods having beveled plane end section surfaces. The enlarged end surface of the spherical surface advantageously allows a more stable connection of individual magnetic core elements without adhesive bonding. This allows the construction of flexible, multiple-member and inexpensive rod core coils and antennae.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventor: Johann WINKLER
  • Patent number: 9024715
    Abstract: In a power converting transformer, an I-core has a pair of fixing grooves provided at centers on opposite side surfaces of the I-core in a y-direction in an xyz orthogonal coordinate system, the fixing grooves extending through the I-core in the z-direction, and an E-core has a pair of fixing recess portions provided at x-direction centers of the y-direction opposite end portions of the base portion on a surface opposite from a surface of the base portion facing the I-core. The I-core and the E-core are pressed and fixed to each other by a fixing spring wrapped around the I-core and the E-core through the fixing grooves and the fixing recess portions. An x-direction length of the E-core is shorter than an x-direction length of the I-core, and a y-direction length of the E-core is shorter than or equal to a y-direction distance between the fixing grooves of the I-core.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: May 5, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masahiro Nishikawa, Tomoyuki Nakano
  • Patent number: 9013263
    Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: April 21, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kenji Nakanoue, Kazuyuki Fukui, Hidemasa Yamaguchi, Kouhei Satou, Tatsuhito Azegami, Makoto Shinohara, Toshiaki Takahashi, Tooru Honma, Masanao Kuwabara, Toshiki Shirahata, Yuuji Satou, Manabu Dohi, Ryosuke Mikoshiba, Hiroyuki Endou
  • Publication number: 20150102885
    Abstract: The present invention provides a transformer including a coiling frame, an iron core, and a fastener. There is a wire twining round the coiling frame, which has a through hole inside thereof. The iron core extends through the through hole and forms a magnet loop. The fastener comprises a first component and a second component. The first component connects with the second component in a horizontal direction thereby surrounding and fixing the coiling frame and the iron core. One advantage of the present invention is that the fastener fixing the coiling frame and the iron core has a split structure. The fastener is assembled with the coiling frame directly, and a combination of the coiling frame and the iron core need not be vertically assembled with the fastener so as to make the transformer assembling easier and avoid the size of the transformer troublesome.
    Type: Application
    Filed: August 12, 2014
    Publication date: April 16, 2015
    Inventors: Xiao-Xia YUAN, Zhi-Liang ZHANG, Shao-Dong ZHANG
  • Patent number: 9007159
    Abstract: A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 14, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masahiro Hachiya, Atsushi Tanada, Kenji Otake, Kiyoshi Tanaka, Tetsuyuki Suzuki
  • Publication number: 20150097649
    Abstract: A novel ferromagnetic composition is provided. The reagent includes at least one zero-valent atom, whether metal, metalloid, or non-metal, in complex with at least one hydride molecule. The composition need not contain any inherently ferromagnetic elements and can be much lighter than conventional iron or other metal-based ferromagnetic materials. Core-solenoid devices having ferromagnetic cores which employ the novel ferromagnetic composition are additionally provided. Examples such as electric motors or generators for use in hybrid or all-electric automobiles are included.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventor: Michael Paul Rowe
  • Patent number: 8994488
    Abstract: A transformer power splitter has a plurality of output ports and an input port. The transformer power splitter includes a plurality of primary winding conductors and a plurality of secondary winding conductors. The secondary winding conductors are electrically connected to the output ports respectively. Each of the secondary winding conductors is electrically connected between a positive terminal and a negative terminal of a corresponding output port. The primary winding conductors are magnetically coupled to the secondary winding conductors respectively. The primary winding conductors are configured in a topology including series and parallel connections between a positive terminal and a negative terminal of the input port.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: March 31, 2015
    Assignee: Mediatek Inc.
    Inventor: Jie-Wei Lai
  • Publication number: 20150085532
    Abstract: A reactor device includes: a magnetic core defining a predetermined axis; a first coil wound around the predetermined axis; and a second coil wound around the predetermined axis and placed opposed to the first coil, wherein: a first lead part and a second lead part formed in both ends of the first coil are placed on that side of the first coil which is opposed to the second coil.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 26, 2015
    Inventor: Fumiki Tanahashi
  • Patent number: 8988182
    Abstract: Transformers and methods of constructing transformers are disclosed. In one embodiment, a method of constructing a transformer includes wrapping a first primary winding around a core, wrapping a secondary winding around the core, and wrapping a second primary winding around the core. The first primary winding traverses substantially an entire circumference of the core in a first circumferential direction. The secondary winding includes a first half and a second half. The first half traverses substantially the entire circumference of the core in the first circumferential direction, and the second half traverses substantially the entire circumference of the core in a second circumferential direction opposite the first circumferential direction. The second primary winding traverses substantially the entire circumference of the core in the second circumferential direction.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: March 24, 2015
    Assignee: SunEdison, Inc.
    Inventor: Gregory Allen Kern
  • Patent number: 8975998
    Abstract: A planar magnetic component and a method for manufacturing the same are provided. The planar magnetic component includes a substrate, a first conductor layer and a magnetic structure; wherein the first conductor layer is disposed on a first surface of the substrate, and the magnetic structure penetrates the first conductor layer and is embedded in the substrate. The magnetic structure includes a ferromagnetic material layer and at least one first hard protective layer disposed on a first surface of the ferromagnetic material layer, which could prevent the ferromagnetic material layer from breaking in a pressing process.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: March 10, 2015
    Assignee: Shanghai Zhuo Kai Electronic Technology Co., Ltd.
    Inventor: Yao-Long Wen
  • Publication number: 20150061817
    Abstract: A coil component may include: a base board having an accommodation portion disposed therein and having conductive patterns disposed within the accommodation portion; an annular core disposed in the accommodation portion; and a laminated board laminated on the base board and having conductive patterns disposed on one surface thereof. The conductive patterns of the laminated board are connected to the conductive patterns of the base board to form a coil.
    Type: Application
    Filed: May 28, 2014
    Publication date: March 5, 2015
    Inventors: Young Min LEE, Geun Young PARK, Sang Yun LEE, Jae Sun WON, Suk Hyeon CHO, Tae Won HEO
  • Patent number: 8970339
    Abstract: A magnetic core is provided. The magnetic core includes a magnetic base and a magnetic plate. The magnetic base includes a first U-core, a second U-core, and a spacing member. The first U-core has a relatively high magnetic permeability, and includes a first surface having a first winding channel defined therein. The second U-core has a relatively high magnetic permeability, and includes a second surface having a second winding channel defined therein. The first and second surfaces are substantially coplanar with one another. The spacing member is connected to the first and second U-cores such that a gap having a relatively low magnetic permeability is formed between the first and second U-cores. The magnetic plate is coupled to the magnetic base such that the magnetic plate substantially covers the first and second surfaces.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 3, 2015
    Assignee: General Electric Company
    Inventor: Robert James Catalano
  • Patent number: 8963676
    Abstract: A configurable transformer module includes a primary printed circuit board, one or more secondary printed circuit boards, and one or more interface connectors. The primary PCB has planar primary windings formed thereon and openings for accommodating a planar transformer core. Each of the one or more secondary PCB has planar secondary windings and an opening for accommodating the planar transformer core. Some of the secondary PCB has mating terminals formed thereon. The planar secondary windings on a respective secondary printed circuit board are configured by electrical connections provided at a respective interface connector to realize a given transformer turns ratio between the respective secondary printed circuit board and the primary printed circuit board.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 24, 2015
    Assignee: XP Power Limited
    Inventor: Kevin P. Hoang
  • Publication number: 20150042440
    Abstract: The inductance device (4) includes: a magnetic metal substrate (2) comprising a metallic substrate (10) having first permeability, a first insulating layer (16a) disposed in the metallic substrate (10), and a first metallic wiring layer (22) having second permeability and disposed on the first insulating layer (16a); a first gap layer (24) disposed on the front side surface of the magnetic metal substrate (2); and a first magnetic flux generation layer (26) disposed on the first gap layer (24). There are provide a thin magnetic metal substrate adaptable to the large current use and advantageous in the high frequency characteristics; and an inductance device to which such a magnetic metal substrate are applied, wherein the inductance device is adaptable to smaller mounting area, larger inductance values, and large current use and advantageous in high frequency characteristics.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 12, 2015
    Applicant: ROHM CO., LTD.
    Inventors: Naoaki Tsurumi, Keisuke Fukae
  • Patent number: 8952776
    Abstract: A multi-phase coupled inductor includes a powder core material magnetic core and first, second, third, and fourth terminals. The coupled inductor further includes a first winding at least partially embedded in the core and a second winding at least partially embedded in the core. The first winding is electrically coupled between the first and second terminals, and the second winding electrically is coupled between the third and fourth terminals. The second winding is at least partially physically separated from the first winding within the magnetic core. The multi-phase coupled inductor is, for example, used in a power supply.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: February 10, 2015
    Assignee: Volterra Semiconductor Corporation
    Inventor: Alexandr Ikriannikov
  • Patent number: 8947190
    Abstract: The present invention relates to a planar transformer, the transformer including a core provided to induce formation of a magnetic field, a bobbin coupled to a core, at least one primary winding interposed between the core and the bobbin to supply a power signal, a first insulation unit provided to the at least one primary winding to insulate the at least one primary winding, at least one secondary winding provided to the first insulation unit and insulated by the first insulation unit to transform the power signal, and a second insulation unit provided to the at least one secondary winding to insulate the at least one secondary winding.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: February 3, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventor: Minsu Park
  • Patent number: 8947191
    Abstract: A small reactor capable of appropriately measuring the temperature of a coil is provided. The reactor includes a coil 2 including a pair of coil elements 2a and 2b and a magnetic core including a pair of inner core portions 31 disposed in the respective coil elements 2a and 2b and outer core portions that connect the inner core portions 31 to form a closed magnetic circuit. Each of the coil elements 2a and 2b has an end face shape having a rounded corner portion 21, which is a corner portion of a rectangle that is rounded. A temperature sensor 7 is disposed in a trapezoidal space between the rounded corner portions 21 of the coil elements 2a and 2b that face each other. The temperature sensor 7 is pressed so as to contact the rounded corner portions 21 by the sensor holder portion 54 provided on an insulator, and is capable of appropriately measuring the temperature of the coil 2.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: February 3, 2015
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Kouhei Yoshikawa
  • Publication number: 20150028981
    Abstract: An RF transformer is provided. The RF transformer includes a ferrite core and a winding coil structure formed around the ferrite core. The winding coil structure is in electrical contact with a center portion of the ferrite core. The winding coil structure is essentially electrically and physically spaced from external portions of the ferrite core.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 29, 2015
    Applicant: PPC Broadband, Inc.
    Inventors: Leon MARKETOS, Erdogan ALKAN
  • Publication number: 20150028685
    Abstract: There is provided a coil sheet including: a sheet having a spiral coil thereon; a core located at the central portion of the coil and having a thickness of t mm, wherein the core has a curvature in at least one of an upper surface of the core, a corner at which the upper surface and a side surface meet each other, and a position in which the core and the sheet meet each other.
    Type: Application
    Filed: October 23, 2013
    Publication date: January 29, 2015
    Applicant: SAMSUNG ELECTRO-MACHANICS CO., LTD.
    Inventors: Kang Ryong CHOI, Yong Il Kwon, Sung Yong An, Chang Ryul Jung