WO2020029664A1 - 线圈模组、无线充电发射装置、接收装置、系统和终端 - Google Patents

线圈模组、无线充电发射装置、接收装置、系统和终端 Download PDF

Info

Publication number
WO2020029664A1
WO2020029664A1 PCT/CN2019/089310 CN2019089310W WO2020029664A1 WO 2020029664 A1 WO2020029664 A1 WO 2020029664A1 CN 2019089310 W CN2019089310 W CN 2019089310W WO 2020029664 A1 WO2020029664 A1 WO 2020029664A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
coil winding
winding
outer portion
inner portion
Prior art date
Application number
PCT/CN2019/089310
Other languages
English (en)
French (fr)
Inventor
裴昌盛
朱勇发
曾智强
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19847844.8A priority Critical patent/EP3806117B1/en
Publication of WO2020029664A1 publication Critical patent/WO2020029664A1/zh
Priority to US17/155,579 priority patent/US12020857B2/en

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2871Pancake coils
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2804Printed windings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2823Wires
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14Inductive couplings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils
    • H01F5/003Printed circuit coils
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2804Printed windings
    • H01F2027/2809Printed windings on stacked layers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F2027/348Preventing eddy currents

Definitions

  • the present application relates to the technical field of wireless charging, and in particular, to a coil module, a wireless charging transmitting device, a receiving device, a system, and a terminal.
  • a device that implements wireless charging technology is called a wireless charger.
  • a wireless charger is provided with a transmitting coil, and an electronic device is provided with a receiving coil.
  • the alternating current carried by the transmitting coil in the wireless charger generates a magnetic field, and the receiving coil in the electronic device generates a voltage through magnetic coupling, thereby Achieve charging of electronic equipment.
  • the wireless charging coil Since wireless charging is based on the magnetic coupling between the transmitting coil and the receiving coil for energy transmission, there is a strong magnetic field between the transmitting coil and the receiving coil. In this case, if the width of the coil winding of the wireless charging coil (that is, the transmitting coil or the receiving coil) is wide, when the magnetic field passes through the coil winding, a large eddy current loss will be generated in the coil winding.
  • the wireless charging coil usually includes a coil winding and a cutting opening. The cutting opening divides the coil winding into two small windings with smaller widths. The width of the coil winding can reduce the eddy current loss of the coil winding.
  • the present application provides a coil module, a wireless charging transmitting device, a receiving device, a system, and a terminal, which can solve the problem of low wireless charging efficiency in related technologies.
  • the technical solution is as follows:
  • a coil module includes a first planar coil winding and a second planar coil winding that are insulated from each other.
  • the first planar coil winding and the second planar coil winding both include Multi-turn coil.
  • the first turn coil of the first planar coil winding includes a first outer portion and a first inner portion, and an end portion of the first turn coil of the first planar coil winding includes an end portion of the first outer portion and An end portion of the first inner portion, a gap extending between the first outer portion and the first inner portion in a winding direction of a first turn coil of the first planar coil winding.
  • the first turn coil of the second planar coil winding includes a second outer portion and a second inner portion, and an end portion of the first turn coil of the second planar coil winding includes an end portion of the second outer portion and An end portion of the second inner portion, a gap extending between the second outer portion and the second inner portion in a winding direction of a first turn coil of the second planar coil winding.
  • An end of the first outer portion is in electrical communication with an end of the second inner portion
  • an end of the second outer portion is in electrical communication with an end of the first inner portion.
  • the first turn coil of the first plane coil winding is the innermost turn coil of the first plane coil winding
  • the first turn coil of the second plane coil winding is the second plane coil winding.
  • the innermost turn coil; or, the first turn coil of the first plane coil winding is the outermost turn coil of the first plane coil winding
  • the first turn coil of the second plane coil winding is the first coil The outermost turn coil of a two-plane coil winding.
  • the first planar coil winding (or the second planar coil winding) is a conductive pattern wound by a conductor, and the conductive pattern may be a circular ring, an elliptical ring, etc.
  • the first planar coil winding (or the first Any one of the multi-turn coils included in the two-plane coil windings is a conductor that is uniformly wound at 360 degrees.
  • the mutual insulation between the first planar coil winding and the second planar coil winding can be achieved through an insulating medium.
  • the insulating medium between the first planar coil winding and the second planar coil winding is used to isolate the first planar coil winding from the second planar coil.
  • the coil winding keeps the other parts of the coil insulated except for the parts connected to each other.
  • a series cross structure is formed between the first turn coil of the first planar coil winding and the first turn coil of the second planar coil winding.
  • An end of the first turn coil of the first plane coil winding and an end of the first turn coil of the second plane coil winding are conducted, specifically, the end of the first outer side and the end of the second inner side are conducted.
  • Communication, the end of the first inner portion and the end of the first outer portion are electrically connected, so that a target wire composed of the first outer portion and the second inner portion and one of the first inner portion and the second outer portion
  • the projection of the target wire on the plane where the first plane coil winding (or the second plane coil winding) is located has an intersection.
  • the first outer portion and the second inner portion are generated.
  • the end of the first outer portion and the end of the second inner portion are electrically connected through at least one first via hole.
  • the at least one first via hole penetrates an end portion of the first outer portion and an end portion of the second inner portion, and an end portion of the first outer portion and an end portion of the second inner portion pass through the at least one first via hole. Make electrical connections.
  • an end of the second outer portion and an end of the first inner portion pass through at least A second via is turned on.
  • the at least one second via hole penetrates an end portion of the second outer portion and an end portion of the first inner portion, and an end portion of the second outer portion and an end portion of the first inner portion pass through the at least one second via hole.
  • the end portion of the first outer portion and the first The conduction of the ends of the two inner portions, and the conduction of the ends of the second inner portion and the ends of the first inner portion can be achieved simply and quickly through at least one second via.
  • the module further includes a first connection portion, and the first connection portion is located on the first outer side
  • the first connecting portion is connected between the end portion and the second inner portion, and an end portion of the first outer portion and the end portion of the second inner portion are connected by a first connection portion.
  • the module further includes a second connection portion, The second connecting portion is located between the second outer portion and the first inner portion, and an end portion of the second outer portion and an end of the first inner portion are implemented by a second connecting portion Continuity.
  • first connection portion is not electrically connected to the coil module other than the end portion of the first outer portion and the end portion of the second inner portion.
  • the second connection portion is not electrically connected to the coil winding other than the end portion of the first inner portion and the end portion of the second outer portion.
  • first connection portion may be a single connection portion, or a plurality of connection portions may be serially connected in series in the length direction, and the multiple connection portions may be connected in series through vias or may be connected in series through welding.
  • second connection portion may be a single connection portion, or may be formed by a plurality of connection portions connected in series in the length direction in sequence. The plurality of connection portions may be connected in series through vias, or may be connected in series through welding.
  • the first connecting portion can be easily and flexibly connected to the end of the first outer portion and the end of the second inner portion, and the second portion can be simply and quickly implemented through at least one second via hole.
  • the end portion of the outer portion is electrically connected to the end portion of the first inner portion.
  • the module further includes a third connection portion and a fourth Connection section.
  • the portion of the first planar coil winding other than the first outer side portion and the first inner side portion includes a first section and a second section, with a gap between the first section and the second section. Opening, the first section includes a third outer section and a third inner section, and a gap extending in a winding direction of the first section between the third outer section and the third inner section, and the first section
  • the second segment includes a fourth outer portion and a fourth inner portion, and the fourth outer portion and the fourth inner portion have a gap extending in a winding direction of the second segment.
  • the portion of the second planar coil winding other than the second outer portion and the second inner portion includes a third segment and a fourth segment, with a gap between the third segment and the fourth segment.
  • the third section includes a fifth outer section and a fifth inner section, and a gap extending in a winding direction of the third section between the fifth outer section and the fifth inner section, and the first section
  • the four segments include a sixth outer portion and a sixth inner portion, and there is a gap extending between the sixth outer portion and the sixth inner portion in the winding direction of the fourth segment.
  • the third outer portion is parallel to the fifth outer portion, the third inner portion is parallel to the fifth inner portion, the fourth outer portion is parallel to the sixth outer portion, and the fourth inner portion And the sixth inner portion is connected in parallel; the third connecting portion is located between the third outer portion and the fourth inner portion, and the third outer portion and the fourth inner portion pass through the The third connection portion is electrically connected, the fourth connection portion is located between the fifth inside portion and the sixth outside portion, and the fifth inside portion and the sixth outside portion pass through the fourth The connection portion is turned on.
  • first turn coil of the first planar coil winding and the first turn coil of the second planar coil winding have a series cross structure, and the first and second segments of the first planar coil winding and the second planar coil winding
  • the third and fourth paragraphs are parallel cross structures.
  • connection portion there is no electrical connection between the third connection portion and the fourth connection portion. There is no electrical connection between the third connection portion and other parts of the coil module except the third outer portion, the fifth outer portion, the fourth inner portion, and the sixth inner portion. There is no electrical connection between the fifth inner portion, the third inner portion, the sixth outer portion and the fourth outer portion.
  • the third outer portion, the fifth outer portion, the third connecting portion, the fourth inner portion, and the sixth inner portion constitute a target lead, and the third inner portion, the fifth inner portion, and the fourth connecting portion.
  • the fourth outer portion and the sixth outer portion constitute a target wire, and the projections of the two target wires on the plane where the first plane coil winding (or the second plane coil winding) is located intersect.
  • the magnetic field passes through the gap between the third outer portion and the third inner portion, the gap between the fifth outer portion and the fifth inner portion, the gap between the fourth outer portion and the fourth inner portion, and
  • the directions of the induced currents generated by the two target wires are opposite, so they can at least partially cancel each other, which can effectively reduce the first plane coil winding and the second plane.
  • the circulating current loss in the coil winding improves the wireless charging efficiency of the coil module.
  • the first segment and the second segment are located in an N-th coil of the first planar coil winding
  • the The third segment and the fourth segment are located at the M-th coil of the second planar coil winding
  • the N-th coil is the innermost coil of the first planar coil winding and the first planar coil winding
  • the Mth coil is any one between the innermost turns of the second planar coil winding and the outermost turns of the second planar coil winding Turn coil.
  • One end of the N-th coil extends to one end of the N-1th coil in the first planar coil winding, which is located inside the N-th coil and is adjacent to the N-th coil.
  • the other end of the N-turn coil extends to one end of the N + 1th-turn coil located outside the N-th coil and adjacent to the N-th coil in the first planar coil winding; the M-th coil
  • the coil has other openings in addition to the opening between the third section and the fourth section.
  • the second planar coil winding is located inside the M-th coil and is in contact with the M-th coil.
  • One end of the M-1th turn coil adjacent to the coil passes through the other opening and extends to one end of the Kth turn coil located outside the Mth turn coil in the second planar coil winding.
  • the first plane coil winding and the second plane coil winding may be connected in series with the N + 1th coil and the Nth coil, and then the Nth coil and the Mth coil may be connected in series. Parallel connection of the Nth turn coil, the N-1th turn coil, and the first turn coil of the first plane coil winding, and then the first turn coil and the second plane coil of the first plane coil winding are connected in series.
  • the first coil of the winding is connected in series, and the first coil of the second planar coil winding, the M-1th coil, and the Kth coil are connected in series.
  • the first turn coil of the first planar coil winding is the In the case where the innermost turn coil of the first planar coil winding is the innermost turn coil of the second planar coil winding, the module includes a first wire and ⁇ ⁇ The second wire.
  • One end of the first lead is the first end of the module, and the other end of the first lead is connected to an end of a first target coil.
  • One end of the second lead is the second end of the module, and the other end of the second lead is connected to an end of a second target coil.
  • One of the first end of the module and the second end of the module is an introduction end, and the other is an extraction end.
  • the first target coil is in the order from the innermost turn coil to the outermost turn coil, the last turn of the multi-turn coil of the first plane coil winding and the end of the innermost turn coil of the first plane coil winding.
  • the coils that are connected in series that is, the first target coil is the outermost one of the at least one turns of the coil that is serially connected in series with the end of the innermost turn of the first planar coil winding.
  • the second target coil is a coil in series from the innermost turn coil to the outermost turn coil, and the last one of the multi-turn coils of the second plane coil winding is connected in series with the end of the innermost turn coil of the second plane coil winding. That is, the second target coil is the outermost one of the at least one turn of the coil in series with the end of the innermost turn coil of the second planar coil winding in series.
  • the first planar coil winding and the second planar coil winding may be connected to an external circuit through a first lead and a second lead, so that the external circuit may be a first planar coil through the first lead and the second lead.
  • the winding and the second planar coil winding provide electric energy, or the first planar coil winding and the second planar coil winding can output electric energy to an external circuit through the first wire and the second wire.
  • the first wire along the length direction of the first wire, the first wire includes a first sub-wire and a second sub-space separated from each other.
  • the first sub-conductor may be considered as an extension and a bent portion of the seventh outer portion
  • the second sub-conductor may be considered as the An extension and a bent portion of the seventh inner portion, and a gap between the first sub-conductor and the second sub-conductor and a gap between the seventh outer portion and the seventh inner portion are cut at one time In this case, there will be no crossover.
  • the first sub-conductor is located inside the second sub-conductor.
  • the line formed after the seventh outer portion is connected to the first sub-conductor and the seventh inner portion and the second sub-conductor. There will be intersections between the lines formed after the connection.
  • the second wire along the length direction of the second wire, the second wire includes third sub-wires separated from each other. And a fourth sub-wire; along the winding direction of the second target coil, the second target coil includes an eighth outer portion and an eighth inner portion spaced apart from each other. An end portion of the eighth outer portion is connected to an end portion of the third sub-wire, and an end portion of the eighth inner portion is connected to an end portion of the fourth sub-wire.
  • the third sub-lead is formed after the extension of the eighth outer portion is bent.
  • the fourth sub-lead is formed after the extension of the eighth inner side portion is bent.
  • the second wire is integrally formed with the second target coil, and is extended from the second target coil.
  • the first lead and the second lead may be separated into sub-conductors with a smaller width, and the first target coil and the second target coil may be separated into an outer portion and an inner portion with a smaller width, thereby The eddy current loss of the coil winding can be reduced.
  • a first turn coil of the first planar coil winding is the In the case where the outermost turn coil of the first planar coil winding is the outermost turn coil of the second planar coil winding, the module includes a first wire and ⁇ ⁇ The second wire.
  • One end of the first lead is the first end of the module, and the other end of the first lead is connected to an end of a third target coil.
  • One end of the second lead is the second end of the module, and the other end of the second lead is connected to an end of a fourth target coil.
  • One of the first end of the module and the second end of the module is an introduction end, and the other is an extraction end.
  • the third target coil is in the order from the outermost turn coil to the innermost turn coil, the last turn of the multi-turn coil of the first plane coil winding and the end of the outermost turn coil of the first plane coil winding.
  • Partially-connected coils that is, the third target coil is the innermost one-turn coil of at least one-turn coil that is serially connected in series with the end of the outermost-turn coil of the first planar coil winding.
  • the fourth target coil is a coil in series from the outermost coil to the innermost coil.
  • the last one of the multi-turn coils of the second planar coil winding is connected in series with the end of the outermost coil of the second planar coil winding. That is, the fourth target coil is the innermost one-turn coil of at least one-turn coil connected in series with the end of the outermost-turn coil of the second planar coil winding in sequence.
  • the first planar coil winding and the second planar coil winding may be connected to an external circuit through a first lead and a second lead, so that the external circuit may be a first planar coil through the first lead and the second lead.
  • the winding and the second planar coil winding provide electric energy, or the first planar coil winding and the second planar coil winding can output electric energy to an external circuit through the first wire and the second wire.
  • the first wire along the length direction of the first wire, the first wire includes a first sub-wire and a second spaced apart from each other.
  • An end portion of the seventh outside portion is connected to an end portion of the first sub-conductor, and an end portion of the seventh inside portion is connected to an end portion of the second sub-conductor.
  • the second conductive line along the length direction of the second conductive line, the second conductive line includes a third spaced apart from each other.
  • An end portion of the eighth outer portion is connected to an end portion of the third sub-wire, and an end portion of the eighth inner portion is connected to an end portion of the fourth sub-wire.
  • the first lead and the second lead may be separated into sub-conductors with a smaller width, and the first target coil and the second target coil may be separated into an outer portion and an inner portion with a smaller width, thereby The eddy current loss of the coil winding can be reduced.
  • a coil module in a second aspect, includes: a first connection portion, a second connection portion, a first wire, a second wire, and a first planar coil winding and a second planar coil winding that are insulated from each other.
  • Each of the first planar coil winding and the second planar coil winding includes a multi-turn coil.
  • the innermost turn coil of the first planar coil winding includes a first segment and a second segment, with an opening between the first segment and the second segment, and the first segment includes a first outer portion and a first An inner portion, a gap extending between the first outer portion and the first inner portion in a winding direction of the first segment, the second segment including a second outer portion and a second inner portion, the There is a gap extending between the second outer portion and the second inner portion in the winding direction of the second segment, and the first end of the second segment is the innermost turn of the first planar coil winding. End, the second end of the second segment is opposite to the first end of the second segment and is close to the first end of the first segment.
  • the innermost turn coil of the second planar coil winding includes a third segment and a fourth segment, with an opening between the third segment and the fourth segment, and the third segment includes a third outer portion and a third An inner portion, a gap extending between the third outer portion and the third inner portion in the winding direction of the third segment, the fourth segment including a fourth outer portion and a fourth inner portion, the There is a gap extending between the fourth outer side portion and the fourth inner side portion in the winding direction of the fourth segment, and the first end of the third segment is the innermost turn of the second planar coil winding. An end portion, a second end of the third end being opposite to the first end of the third segment and close to the first end of the fourth segment.
  • the first outer portion is parallel to the third outer portion
  • the first inner portion is parallel to the third inner portion
  • the second outer portion is parallel to the fourth outer portion
  • the second inner portion And the fourth inner portion is connected in parallel; between the first outer portion and the second inner portion of the first connection portion, and the first outer portion and the second inner portion pass through the first A connection portion is turned on, the second connection portion is located between the third inside portion and the fourth outside portion, and the third inside portion and the fourth outside portion pass through the second connection portion To achieve continuity.
  • One end of the first lead is the first end of the module, the other end of the first lead is in communication with the second end of the first segment, and one end of the second lead is the module
  • the second end of the second wire is in communication with the second end of the fourth segment.
  • One of the first end of the module and the second end of the module is an introduction end, and the other is an extraction end.
  • first connection portion is not electrically connected to other portions of the coil module except the first outer portion and the second inner portion.
  • the second connection portion is not electrically connected to the coil winding other than the third inner portion and the fourth outer portion.
  • first outer portion and the second inner portion are electrically connected through a first connection portion.
  • first outer portion, the first connecting portion, and the second inner portion may be integrally molded.
  • the third inner side and the fourth outer side are electrically connected through a second connection portion.
  • the third inner portion, the second connecting portion, and the fourth outer portion may be integrally formed.
  • the winding direction of the multi-turn coil of the first planar coil winding is opposite to the winding direction of the multi-turn coil of the second planar coil winding.
  • the current flow direction in the first planar coil winding and the current flow direction in the second planar coil winding are same.
  • the planar coil winding flows through the first planar coil winding, and finally flows out from the first wire.
  • a parallel cross structure is formed between the innermost turn coil of the first planar coil winding and the innermost turn coil of the second planar coil winding. That is, the first outer portion, the third outer portion, the first connecting portion, the second inner portion, and the fourth inner portion constitute a target wire, and the first inner portion, the third inner portion, the second connecting portion, and the second The outer portion and the fourth outer portion constitute a target wire, and the projections of the two target wires on the plane where the first plane coil winding (or the second plane coil winding) is located intersect.
  • the magnetic field passes through the gap between the first outer portion and the first inner portion, the gap between the third outer portion and the third inner portion, the gap between the second outer portion and the second inner portion, and
  • the directions of the induced currents generated by the two target wires are opposite, so they can at least partially cancel each other, which can effectively reduce the first plane coil winding and the second plane.
  • the circulating current loss in the coil winding improves the wireless charging efficiency of the coil module.
  • the module further includes a third connection portion and a fourth connection portion.
  • the target coil of the first planar coil winding includes a fifth segment, an opening is provided between the fifth segment and the first segment, the fifth segment includes a fifth outer portion and a fifth inner portion, and the target The coil is a one-turn coil located outside the innermost turn coil of the first planar coil winding and adjacent to the innermost turn coil of the first planar coil winding, and the fifth There is a gap extending between the outer side portion and the fifth inner side portion in the winding direction of the target coil, and the other end of the first wire is communicated with the second end of the first segment through the target coil.
  • the third connecting portion is located between the first outer portion and the fifth inner portion, and the first outer portion and the fifth inner portion are electrically connected through the third connecting portion.
  • Four connecting portions are located between the first inner portion and the fifth outer portion, and the first inner portion and the fifth outer portion are electrically connected through the fourth connecting portion.
  • the third connection portion is not electrically connected to the coil module other than the first outer portion, the third outer portion, and the fifth inner portion.
  • the fourth connection portion is not electrically connected to the coil winding other than the first inner portion, the third inner portion, and the fifth outer portion.
  • a target wire composed of the first outer portion, the third connection portion, and the fifth inner portion is in a first plane with a target wire composed of the first inner portion, the fourth connection portion, and the fifth outer portion.
  • the projections on the plane where the coil windings (or the second plane coil windings) are located intersect. In this case, when the magnetic field passes through the gap between the first outer portion and the first inner portion and the gap between the fifth outer portion and the fifth inner portion, the first outer portion and the second inner portion are generated.
  • the direction of the induced current is opposite to the direction of the induced current generated on the fifth outer side and the fifth inner side, so they can at least partially cancel each other out, thereby effectively reducing the circulating current loss in the first and second planar coil windings, Improve the wireless charging efficiency of the coil module.
  • a coil module includes a first connection portion and a second connection portion, and a first planar coil winding and a second planar coil winding that are insulated from each other, and the first planar coil winding. And the second planar coil winding each includes a multi-turn coil.
  • the first planar coil winding includes a first segment and a second segment, and there is an opening between the first segment and the second segment, and the first
  • the segment includes a first outer portion and a first inner portion.
  • the first outer portion and the first inner portion have a gap extending in a winding direction of the first segment.
  • the second segment includes a second outer portion. There is a gap extending between the second outer portion and the second inner portion in the winding direction of the second segment, and the first connecting portion is located between the first outer portion and the second inner portion. Between the second inner portion, the first outer portion and the second inner portion are electrically connected through the first connection portion.
  • the second planar coil winding includes a third section. In the thickness direction of the first planar coil winding, an end of the third section near the first section and the second section near the first section.
  • the third section includes a third outer section and a third inner section, and the third outer section includes a third outer section and a third inner section that extend along a winding direction of the third section; Gap, the second connecting portion is located between the third outer portion and the first inner portion, and the third outer portion and the first inner portion are electrically connected through the second connecting portion, so An end of the third outer portion near the first inner portion is in communication with an end of the second outer portion near the first inner portion.
  • first connection portion is not electrically connected to other parts of the coil module except the first outer portion, the second inner portion, and the third inner portion.
  • the second connection portion is not electrically connected to the coil winding other than the third outer portion, the second outer portion, and the first inner portion.
  • the first planar coil winding is generally referred to as a first layer coil winding
  • the second planar coil winding is referred to as a second layer coil winding
  • the third outer side portion and the second outer side portion are communicated across layers.
  • the series connection between the first segment and the second segment in the first planar coil winding can be achieved through the first connection portion and the second connection portion.
  • a target wire composed of the first outer portion, the first connection portion, and the second inner portion and a target wire composed of the first inner portion, the second connection portion, and the second outer portion are in the first planar coil winding (or the first There are intersections between the projections on the plane where the two-plane coil windings are located.
  • the first outer portion and the second inner portion are generated.
  • the direction of the induced current of is opposite to that of the induced current generated on the second outer portion and the second inner portion, so they can at least partially cancel each other out, thereby effectively reducing the circulating current loss in the first and second planar coil windings, Improve the wireless charging efficiency of the coil module.
  • the first outer portion, the first connecting portion, and the second inner portion are integrally formed.
  • the second connecting portion includes a first part and a second part separated, and the first part and The first inner portion is integrally formed, the second portion is integrally formed with the third outer portion, and end portions of the first portion and the second portion that are close to each other are communicated with each other.
  • an end portion where the first portion and the second portion are close to each other is an end of the first portion far from the first inner portion and an end of the second portion far from the third outer portion.
  • at least one via may penetrate the end portion of the first and second portions that are close to each other, and the end portions of the first portion and the second portion that are close to each other may pass through the at least one Vias make electrical connections.
  • the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect in a third possible implementation manner of the third aspect, at least one first via hole runs through An end of the second outer portion near the first inner portion and an end of the third outer portion near the first inner portion, and an end of the second outer portion near the first inner portion Electrical communication with an end of the third outer portion close to the first inner portion through the at least one first via.
  • the end of the second outer portion near the first inner portion and the end of the third outer portion near the first inner portion can be simply and quickly connected through at least one first via hole.
  • the second inner portion is close to the first outer portion
  • One end of the portion is in communication with one end of the third inner portion near the first outer portion.
  • the second inner side portion and the third inner side portion communicate with each other in layers.
  • the first section of the first planar coil winding and the second plane coil winding can be realized through the first connecting section and the second connecting section.
  • a target wire composed of the first outer portion, the first connection portion, and the third inner portion and a target wire composed of the first inner portion, the second connection portion, and the third outer portion are in the first planar coil winding (or the first There are intersections between the projections on the plane where the two-plane coil windings are located.
  • the first outer portion and the second inner portion are generated.
  • the direction of the induced current of is opposite to the direction of the induced current generated on the third outer portion and the third inner portion, so that they can at least partially cancel each other, thereby effectively reducing the circulating current loss in the first and second planar coil windings, Improve the wireless charging efficiency of the coil module.
  • At least one second via hole penetrates an end of the second inner portion close to the first outer portion and the first An end of the three inner portions near the first outer portion, an end of the second inner portion near the first outer portion, and an end of the third inner portion near the first outer portion pass through the At least one second via makes an electrical connection.
  • the end of the second inner portion near the first outer portion and the end of the third inner portion near the first outer portion can be simply and quickly connected through at least one second via hole.
  • a wireless charging transmitting device includes a DC / AC conversion circuit, a control unit, and the coil module according to any one of the first to third aspects.
  • An input end of the DC / AC conversion circuit is connected to a DC power source; the DC / AC conversion circuit converts a DC signal input by the DC power source into an AC signal under the control of the control unit, and transmits the AC signal To the coil module, so that the coil module transmits the AC signal.
  • the wireless charging transmitting device includes a coil module, and the circulating loss in the first planar coil winding and the second planar coil winding included in the coil module is small, so the wireless charging transmitting device can be improved in wireless. Charging efficiency.
  • the device further includes a matching circuit; the matching circuit is connected between the DC / AC conversion circuit and the coil module for resonance with the coil module.
  • the matching circuit can enable the AC signal output by the DC / AC conversion circuit to be efficiently transmitted to the coil module.
  • a wireless charging receiving device includes an AC / DC conversion circuit, a control unit, a load, and the coil module according to any one of the first to third aspects.
  • the coil module is connected to an input end of the AC / DC conversion circuit; the coil module receives an AC signal and transmits the AC signal to the AC / DC conversion circuit; the AC / DC conversion circuit The AC signal is converted into a DC signal under the control of the control unit, and the DC signal is output to a load to power the load.
  • the wireless charging receiving device includes a coil module 334.
  • the first planar coil winding and the second planar coil winding included in the coil module 334 have less circulating current losses, so the wireless charging receiving device can be improved. Wireless charging efficiency.
  • the device further includes a matching circuit; the matching circuit is connected between the coil module and the AC / DC conversion circuit for resonance with the coil module.
  • the matching circuit enables the AC signal output by the coil module to be efficiently transmitted to the AC / DC conversion circuit.
  • a wireless charging system includes the wireless charging transmitting device according to the fourth aspect, and includes the wireless charging receiving device according to the fifth aspect.
  • the wireless charging transmitting device is used for: Wirelessly charging the wireless charging receiving device.
  • the wireless charging system includes a wireless charging transmitting device and a wireless charging receiving device, and both the wireless charging transmitting device and the wireless charging receiving device include a coil module, and the coil module includes a first planar coil winding and a first The circulating current loss in the two-plane coil winding is less, so the wireless charging efficiency of the wireless charging system can be improved.
  • a terminal includes an AC / DC conversion circuit, a charging control unit, a workload circuit, and the coil module according to any one of the first to third aspects;
  • the coil module is connected to an input end of the AC / DC conversion circuit
  • the coil module receives an AC signal and transmits the AC signal to the AC / DC conversion circuit; the AC / DC conversion circuit converts the AC signal into a DC signal under the control of the charging control unit And output the DC signal to the working load circuit.
  • the terminal includes a coil module.
  • the first planar coil winding and the second planar coil winding included in the coil module have less circulating current losses, so the wireless charging efficiency of the terminal can be improved.
  • the coil module includes a first planar coil winding and a second planar coil winding that are insulated from each other.
  • Each of the first planar coil winding and the second planar coil winding includes a multi-turn coil.
  • the first turn coil of the first planar coil winding includes a first outer portion and a first inner portion
  • an end portion of the first turn coil of the first planar coil winding includes an end portion of the first outer portion and an end of the first inner portion
  • the first coil of the second planar coil winding includes a second outer portion and a second inner portion, and an end portion of the first turn coil of the second planar coil winding includes an end portion of the second outer portion and an end of the second inner portion. There is a gap extending between the second outer side portion and the second inner side portion in the winding direction of the first turn coil of the second planar coil winding. An end portion of the first outer portion is in communication with an end portion of the second inner portion, and an end portion of the second outer portion is in communication with the end portion of the first inner portion.
  • a target wire composed of the first outer side portion and the second inner side portion and a target wire composed of the first inner side portion and the second outer side portion can be made on the plane where the first plane coil winding (or the second plane coil winding) is located.
  • the projections are crossed.
  • the first outer portion and the second inner portion are generated.
  • the induced current of the opposite to the direction of the induced current generated on the first inner side and the second outer side so that they can at least partially cancel each other, thereby effectively reducing the circulating current loss in the first and second planar coil windings, Improve the wireless charging efficiency of the coil module.
  • FIG. 1 is a schematic structural diagram of a wireless charging coil provided by related technologies
  • FIG. 2 is a schematic diagram of an induced current in a small winding provided by the related art
  • FIG. 3 is a schematic structural diagram of a first coil module according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a second coil module according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a cross connection between an outer portion and an inner portion provided by an embodiment of the present application
  • FIG. 6 is a schematic structural diagram of a third coil module according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a fourth coil module according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a fifth coil module according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a sixth coil module according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a connection part provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of another connection part according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of still another connection portion provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of an induced current in a coil according to an embodiment of the present application.
  • FIG. 14 is a schematic cross diagram of a first outer portion and an inner portion provided by an embodiment of the present application.
  • 15 is a schematic cross diagram of a second outer portion and an inner portion provided by an embodiment of the present application.
  • 16 is a schematic cross diagram of a third outer portion and an inner portion provided by an embodiment of the present application.
  • 17 is a schematic cross diagram of a fourth outer side and an inner side according to an embodiment of the present application.
  • FIG. 18 is a schematic cross diagram of a fifth outer portion and an inner portion according to an embodiment of the present application.
  • FIG. 19 is a schematic cross diagram of a sixth outer portion and an inner portion provided by an embodiment of the present application.
  • FIG. 20 is a schematic diagram of a magnetic field distribution provided by an embodiment of the present application.
  • 21 is a schematic structural diagram of a seventh coil module according to an embodiment of the present application.
  • 22 is a schematic diagram of another type of cross connection between an outer side and an inner side provided by an embodiment of the present application.
  • FIG. 23 is a schematic structural diagram of an eighth coil module according to an embodiment of the present application.
  • FIG. 24 is a schematic structural diagram of a ninth coil module according to an embodiment of the present application.
  • 25 is a schematic structural diagram of a tenth coil module according to an embodiment of the present application.
  • 26 is a schematic structural diagram of an eleventh coil module according to an embodiment of the present application.
  • FIG. 27 is a schematic structural diagram of a twelfth coil module according to an embodiment of the present application.
  • FIG. 28 is a schematic structural diagram of a thirteenth coil module according to an embodiment of the present application.
  • FIG. 29 is a schematic structural diagram of a first wireless charging transmitting device according to an embodiment of the present application.
  • FIG. 30 is a schematic structural diagram of a second wireless charging and transmitting device according to an embodiment of the present application.
  • FIG. 31 is a schematic structural diagram of a third wireless charging transmitting device according to an embodiment of the present application.
  • FIG. 32 is a schematic structural diagram of a fourth wireless charging and transmitting device according to an embodiment of the present application.
  • FIG. 33 is a schematic structural diagram of a first wireless charging receiving device according to an embodiment of the present application.
  • FIG. 34 is a schematic structural diagram of a second wireless charging receiving device according to an embodiment of the present application.
  • 35 is a schematic structural diagram of a third wireless charging receiving device according to an embodiment of the present application.
  • FIG. 36 is a schematic structural diagram of a fourth wireless charging receiving device according to an embodiment of the present application.
  • FIG. 37 is a schematic structural diagram of a wireless charging system according to an embodiment of the present application.
  • FIG. 38 is a schematic structural diagram of a first terminal provided by an embodiment of the present application.
  • 39 is a schematic structural diagram of a second terminal provided by an embodiment of the present application.
  • FIG. 40 is a schematic structural diagram of a third terminal provided by an embodiment of the present application.
  • FIG. 41 is a schematic structural diagram of a fourth terminal provided by an embodiment of the present application.
  • 1 the first planar coil winding
  • 2 the second planar coil winding
  • first outer portion 12: first inner portion, 21: second outer portion, 22: second inner portion, 31: third outer portion, 32: third inner portion, 41: fourth outer portion, 42 : Fourth inside part, 51: fifth outside part, 52: fifth inside part, 61: sixth outside part, 62: sixth inside part, 71: seventh outside part, 72: seventh inside part, 81: Eighth outer portion, 82: eighth inner portion;
  • L1 the first connection portion
  • L2 the second connection portion
  • L3 the third connection portion
  • L4 the fourth connection portion
  • D1 first lead
  • D2 second lead
  • d1 first sub lead
  • d2 second sub lead
  • d3 third sub lead
  • d4 fourth sub lead
  • 331 DC / AC conversion circuit
  • 332 control unit
  • 333 load
  • 334 coil module
  • 335 matching circuit
  • 371 wireless charging transmitting device
  • 372 wireless charging receiving device
  • 381 workload circuit
  • 382 AC / DC conversion circuit
  • 383 charge control unit
  • 384 coil module
  • 385 matching circuit.
  • FIG. 3 or FIG. 4 is a schematic structural diagram of a coil module according to an embodiment of the present application.
  • the coil module includes a first planar coil winding 1 and a second planar coil winding 2 which are insulated from each other, and each of the first planar coil winding 1 and the second planar coil winding 2 includes a multi-turn coil.
  • the first turn coil of the first planar coil winding 1 includes a first outer portion 11 and a first inner portion 12, and an end portion of the first turn coil of the first planar coil winding 1 includes an end portion of the first outer portion 11 and a first An end portion of one inner portion 12 has a gap extending between the first outer portion 11 and the first inner portion 12 in the winding direction of the first turn coil of the first planar coil winding 1.
  • the first turn coil of the second planar coil winding 2 includes a second outer portion 21 and a second inner portion 22, and an end portion of the first turn coil of the second planar coil winding 2 includes an end portion of the second outer portion 21 and a first An end portion of the two inner side portions 22 has a gap extending between the second outer side portion 21 and the second inner side portion 22 in the winding direction of the first turn coil of the second planar coil winding 2.
  • An end portion of the first outer portion 11 and an end portion of the second inner portion 22 are electrically connected, and an end portion of the second outer portion 21 and an end portion of the first inner portion 12 are electrically connected.
  • the first turn coil of the first plane coil winding 1 is the innermost turn coil of the first plane coil winding 1
  • the first turn coil of the second plane coil winding 2 is the second plane coil winding. 2 innermost turn coils.
  • the first turn coil of the first plane coil winding 1 is the outermost turn coil of the first plane coil winding 1
  • the first turn coil of the second plane coil winding 2 is the second plane.
  • first planar coil winding 1 (or the second planar coil winding 2) is a conductive pattern wound by a conductor, and the conductive pattern may be a circular ring, an elliptical ring, etc.
  • the first planar coil winding 1 Any one of the multi-turn coils included in the (or the second planar coil winding 2) is a conductor wound uniformly at 360 degrees.
  • the widths of the multi-turn coils of the first planar coil winding 1 (or the second planar coil winding 2) may be different.
  • the first planar coil winding 1 (or second The width of the multi-turn coil of the planar coil winding 2) may be gradually increased, or may be increased first and then decreased. It is worth noting that the so-called “first planar coil winding 1 (or the second planar coil winding 2) includes multi-turn coils" is usually much larger than two turns.
  • the mutual insulation between the first planar coil winding 1 and the second planar coil winding 2 can be achieved by using an insulating medium.
  • the insulating medium between the first planar coil winding 1 and the second planar coil winding 2 is used to isolate the first planar coil winding. 1 and the second planar coil winding 2 keep the other parts of the two coils insulated from each other except for the part connected to each other.
  • an insulating layer may be provided between the first planar coil winding 1 and the second planar coil winding 2.
  • the first planar coil winding 1 may be disposed on a printed circuit board (Printed Circuit Board, PCB) or A flexible circuit board (Flexible Printed Circuit, FPC) and other circuit boards, and the second planar coil winding 2 may also be provided on a circuit board such as a PCB or FPC.
  • the surface of the multi-turn coil of the first planar coil winding 1 and the surface of the multi-turn coil of the second planar coil winding 2 may both be covered with an insulating material.
  • the multi-turn of the first planar coil winding 1 The coil may be a flat wire or an enameled wire
  • the multi-turn coil of the second planar coil winding 2 may also be a flat wire or an enameled wire.
  • the multi-turn coil of the first plane coil winding 1 When the multi-turn coil of the first plane coil winding 1 (or the second plane coil winding 2) is a flat wire, the multi-turn coil of the first plane coil winding 1 (or the second plane coil winding 2) may be processed by a die-cutting process. , Etching method or electroplating additive method; when the multi-turn coil of the first planar coil winding 1 (or the second planar coil winding 2) is an enameled wire, the first planar coil winding 1 (or the second planar coil winding 2) It may be wound by multiple wires, and each of the multiple wires may be a single-stranded wire or a multi-stranded wire, which is not limited in the embodiment of the present application.
  • the gap extending between the first outer side portion 11 and the first inner side portion 12 in the winding direction of the first turn coil of the first planar coil winding 1 may be formed by cutting, chemical etching, or parallel winding. . Specifically, the first turn coil of the first planar coil winding 1 may be cut, chemically etched, or the like to obtain the first outer portion 11 and the first inner portion 12. At this time, the first outer portion 11 and the first inner portion 12 There is a gap between them. Alternatively, multiple wires can be wound into the first turn of the first planar coil winding 1 at this time. At this time, the first outer portion 11 can be one wire, and the first inner portion 12 can be another wire. There is a gap between the portion 11 and the first inner portion 12.
  • an end portion of the first outer portion 11 is separated from an end portion of the first inner portion 12.
  • One end of the first outer portion 11 that is far from the second inner portion 22 and one end of the first inner portion 12 that is far from the end of the second outer portion 21 can pass through the first turn coil of the first planar coil winding 1 Continuity can be achieved by the other parts except the first outer portion 11 and the first inner portion 12, or can be achieved by the turns of the first planar coil winding 1 other than the first turn coil, or by the first A plane coil winding 1 and a lead connected between the coil module's lead-out terminal or lead-in terminal can be connected with each other, or can be connected through the connection terminal of the coil module with an external circuit.
  • a gap extending between the second outer side portion 21 and the second inner side portion 22 in the winding direction of the first turn coil of the second planar coil winding 2 may be formed by cutting, chemical etching, or parallel winding. .
  • the first turn coil of the second planar coil winding 2 may be cut, chemically etched, or the like to obtain the second outer portion 21 and the second inner portion 22.
  • the second outer portion 21 and the second inner portion 22 There is a gap between them.
  • multiple wires may be wound into the first turn of the second planar coil winding 2 at this time.
  • the second outer portion 21 may be one wire
  • the second inner portion 22 may be another wire. There is a gap between the portion 21 and the second inner portion 22.
  • the end portion of the second outer portion 21 and the end portion of the second inner portion 22 are separated from each other.
  • One end of the second outer portion 21 far from the end of the first inner portion 12 and one end of the second inner portion 22 far from the end of the first outer portion 11 can pass through the first turn coil of the second planar coil winding 2 Continuity can be achieved by the other parts except the second outer portion 21 and the second inner portion 22, or can be achieved by the turns of the second planar coil winding 2 other than the first turn, or by the first
  • the two plane coil windings 2 are connected with the lead wires of the coil module or the lead-out ends of the coil module to achieve conduction, or the connection terminals of the coil module and external circuits can be conducted.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can first flow into the first outer side 11 and the first inner side of the first turn coil of the first planar coil winding 1 Part 12 then flows from the first outer part 11 to the second inner part 22 of the first turn coil of the second planar coil winding 2 and simultaneously flows from the first inner part 12 to the first of the second plane coil winding 2 The second outer portion 21 of the turn coil finally flows out from the second planar coil winding 2.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself may first flow into the second inner portion 22 and the second outer portion 21 of the first turn coil of the second planar coil winding 2, It then flows from the second inner portion 22 to the first outer portion 11 of the first turn coil of the first planar coil winding 1, and at the same time flows from the second outer portion 21 to the first turn coil of the first planar coil winding 1
  • the first inner side portion 12 flows out from the first planar coil winding 1 finally.
  • a series cross structure is formed between the first turn coil of the first planar coil winding 1 and the first turn coil of the second planar coil winding 2.
  • the ends of the first turn coil of the first planar coil winding 1 and the ends of the first turn coil of the second planar coil winding 2 are electrically connected, specifically, the end of the first outer side 11 and the second
  • the ends of the inner portion 22 are electrically connected, and the ends of the first inner portion 12 and the second outer portion 21 are electrically connected, so that a target wire composed of the first outer portion 11 and the second inner portion 22 and The projection of a target wire composed of the first inner side portion 12 and the second outer side portion 21 on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located intersects.
  • the first outer portion 11 and the first inner portion 12 and the gap between the second outer portion 21 and the second inner portion 22 the first outer portion 11 and the first
  • the induced currents generated on the two inner side portions 22 are opposite to the directions of the induced currents generated on the first inner side portion 12 and the second outer side portion 21, so they can at least partially cancel each other, thereby effectively reducing the first planar coil windings 1 and the first
  • the circulating current loss in the two-plane coil winding 2 improves the wireless charging efficiency of the coil module.
  • the end of the first outer portion 11 and the end of the second inner portion 22 can be electrically connected through at least one first via, and the end of the second outer portion 21 and the first The ends of the inner portion 12 can be electrically connected through at least one second via hole.
  • the at least one first via hole penetrates an end portion of the first outer portion 11 and an end portion of the second inner portion 22, and an end portion of the first outer portion 11 and an end portion of the second inner portion 22 pass through the At least one first via makes an electrical connection.
  • the at least one second via hole penetrates an end portion of the second outer portion 21 and an end portion of the first inner portion 12, and an end portion of the second outer portion 21 and an end portion of the first inner portion 12 pass through the at least one second via. The holes make electrical connections.
  • the coil module may further include a first connection portion L1, and the first connection portion L1 is located at the first outer portion 11 and the first Between the two inner portions 22, the end of the first outer portion 11 and the end of the second inner portion 22 can be electrically connected through a first connection portion L1; the coil module may further include a second connection portion L2, The second connection portion L2 is located between the second outer portion 21 and the first inner portion 12, and the end portion of the second outer portion 21 and the end of the first inner portion 12 can be electrically connected through the second connection portion L2.
  • first connection portion L1 and the end portion of the first outer portion 11 may be electrically connected by means of integral molding, welding, via connection, and the like.
  • the welding may use a pulse heating reflow soldering (hot bar) process. Or laser welding processes.
  • first connection portion L1 and the end portion of the second inner portion 22 can be electrically connected by means of integral molding, welding, via connection, and the like.
  • the second connection portion L2 and the end portion of the second outer portion 21 can be electrically connected. Conduction can be achieved by integral molding, welding, via connection, etc., and conduction between the second connection portion L2 and the end of the first inner portion 12 can be achieved by integral molding, welding, via connection, or the like.
  • first connection portion L1 may be a single connection portion, or may be formed by a plurality of connection portions connected in series in the length direction in sequence. The plurality of connection portions may be connected in series through vias or may be connected in series by welding.
  • second connection portion L2 may be a single connection portion, or may be formed by a plurality of connection portions connected in series in the length direction, and the plurality of connection portions may be connected in series through vias or may be connected in series by welding.
  • first connection portion L1 is not electrically connected to the coil module other than the end portion of the first outer portion 11 and the end portion of the second inner portion 22.
  • the second connection portion L2 is not electrically connected to the coil winding other than the end portion of the first inner portion 12 and the end portion of the second outer portion 21.
  • an insulating medium is required between the first connection part L1 and the second connection part L2 to isolate the first connection part L1 from the second connection part L2.
  • an insulating layer may be provided between the first connection portion L1 and the second connection portion L2, or an insulating substance may be wrapped on the surface of the first connection portion L1 and the surface of the second connection portion L2.
  • connection portion L1 and the second connection portion L2 are projected on the plane where the first planar coil winding 1 (or the second planar coil winding 2) is located, the first overlapped portion does not exist,
  • the connection portion L1 needs to be separated from the second connection portion L2, that is, there needs to be a gap between the first connection portion L1 and the second connection portion L2.
  • the first connection portion L1 may be The surface is covered with an insulating material, or the first connecting portion L1 and the other portions of the coil module except the end portion of the first outer portion 11 and the end portion of the second inner portion 22 may be separated from each other.
  • the second connecting portion L2 in order to ensure that the second connecting portion L2 is not electrically connected to the coil winding other than the ends of the first inner portion 12 and the second outer portion 21, it may be wrapped on the surface of the second connecting portion L2.
  • the insulating material may alternatively separate the second connection portion L2 from other portions of the coil module other than the end portion of the first inner portion 12 and the end portion of the second outer portion 21.
  • the first planar coil winding 1 may be located on one side of the insulating layer, and the second planar coil winding 2 may be located on the insulating layer.
  • the first connection portion L1 and the second connection portion L2 may be respectively located on different sides of the insulation layer, or may be located on the same side of the insulation layer at the same time.
  • the first connection portion L1 is formed by a plurality of connection portions connected in series in the length direction
  • the plurality of connection portions may be respectively located on different sides of the insulation layer, or may be located on the same side of the insulation layer at the same time.
  • the two connection portions L2 are formed by a plurality of connection portions connected in series in the length direction
  • the plurality of connection portions may be respectively located on different sides of the insulation layer, or may be located on the same side of the insulation layer at the same time.
  • first planar coil winding 1 and the first connection portion L1 are both located on one side of the insulation layer, and the second planar coil winding 2 and the second connection portion L2 are located on the other side of the insulation layer.
  • first planar coil winding 1 and the second connection portion L2 may both be located on one side of the insulation layer, and the second planar coil winding 2 and the first connection portion L1 may be located on the other side of the insulation layer.
  • first planar coil winding 1 is located on one side of the insulating layer
  • the second planar coil winding 2 is located on the other side of the insulating layer
  • the first connecting portion L1 and the first connecting portion L1 are located on the other side of the insulating layer.
  • the two connecting portions L2 are separated from each other.
  • the first planar coil winding 1, the first connecting portion L1, and the second connecting portion L2 are all located on one side of the insulating layer
  • the second planar coil winding 2 is located on the other side of the insulating layer
  • the first connecting portion L1 and the first The two connecting portions L2 are separated from each other.
  • the end of the first outer portion 11, the first connecting portion L1, and the end of the second inner portion 22 may be integrally molded.
  • the first outer portion 11, the first connecting portion L1, and the second inner portion The sections 22 may belong to the same wire.
  • an end of the first inner portion 12, the second connecting portion L2, and an end of the second outer portion 21 may be integrally molded.
  • the first inner portion 12, the second connecting portion L2, and the second outer portion 21 may be integrally molded. Belongs to the same wire.
  • the first refinement structure the projected area of the gap between the first outer portion 11 and the first inner portion 12 on the plane where the first planar coil winding 1 (or the second planar coil winding 2) is located and the second outer portion
  • the projected area of the gap between 21 and the second inner portion 22 on the plane where the first planar coil winding 1 (or the second planar coil winding 2) is located is equal or similar.
  • the induction current generated when the magnetic field passes through the gap between the first outer portion 11 and the first inner portion 12 and the induction generated when the magnetic field passes through the gap between the second outer portion 21 and the second inner portion 22 The currents are equal or similar.
  • the projected areas on the plane where the first plane coil winding 1 is located are similar, meaning that the difference between the two areas is less than or equal to the first preset value.
  • the first preset value can be set in advance, and the first preset value can be set smaller.
  • the first preset value can be 30% of any one of the two areas.
  • it can also be other The value is not limited in the embodiment of the present application.
  • the induced current generated when the magnetic field passes through the gap between the first outer portion 11 and the first inner portion 12 is similar to the induced current generated when the magnetic field passes through the gap between the second outer portion 21 and the second inner portion 22. It means that the difference between the two induced currents is less than or equal to the second preset value.
  • the second preset value can be set in advance, and the second preset value can be set smaller. For example, the second preset value can be 30% of the induced current of either of the two induced currents. Of course, also It may be other values, which are not limited in the embodiments of the present application.
  • FIG. 13 is a cross-sectional view at AA ′ and B-B ′ in FIG. 3 or FIG. 4.
  • FIG. 13 when the magnetic field passes through the first outer portion 11 and the first inner portion
  • induced currents of almost the same size and opposite directions are generated in the first outer portion 11 and the first inner portion 12
  • a magnetic field passes between the second outer portion 21 and the second inner portion 22
  • induced currents of almost the same size and opposite directions are generated in the second outer portion 21 and the second inner portion 22.
  • the first turn coil of the first planar coil winding 1 may include a plurality of sections, and the plurality of sections may include a first outer section 11, a first inner section 12, and at least one other Any two of the plurality of parts are separated from each other, and the end of the first turn coil of the first planar coil winding 1 includes an end of the first outer part 11, an end of the first inner part 12, and An end of the at least one other part.
  • the first turn coil of the second planar coil winding 2 may also include a plurality of sections, which may include a second outer section 21, a second inner section 22, and at least one other section, any two of which The ends of the first turn coil of the second planar coil winding 2 include an end of the second outer portion 21, an end of the second inner portion 22, and an end of the at least one other portion.
  • the number of parts included in the first turn of the first planar coil winding 1 and the number of parts included in the first turn of the second planar coil winding 2 are the same.
  • the plurality of sections included in the one-turn coil and the plurality of sections included in the first turn coil of the second planar coil winding 2 are one-to-one.
  • the coil winding may further include a plurality of connection portions, and the number of the plurality of connection portions is the same as the number of the plurality of portions included in the first turn coil of the first planar coil winding 1, and the plurality The connecting portions and the plurality of portions included in the first turn coil of the first planar coil winding 1 are one-to-one.
  • An end of the first outer portion 11, an end of the first inner portion 12, and an end of at least one other portion in the first turn coil of the first planar coil winding 1 may be passed through the plurality of connecting portions to the second The end of the second inner portion 22, the end of the second outer portion 21, and the end of at least one other portion in the first-turn coil of the planar coil winding 2 are conducted, so that the first planar coil winding 1 A series cross structure is formed between the one-turn coil and the first-turn coil of the second plane-coil winding 2, that is, a plurality of parts included in the first-turn coil of the first-plane-coil winding 1 A projection of a plurality of target wires formed between a plurality of sections included in a one-turn coil on a plane on which the first planar coil winding 1 (or the second planar coil winding 2) is located intersects.
  • any one of the plurality of connection portions is connected to the first planar coil module 1 connected to the coil module except for the connection portion.
  • the end of one part included in the one-turn coil and the part other than the end of the one part included in the first-turn coil of the second planar coil module 2 are not electrically connected.
  • the first turn coil of the first planar coil module 1 includes a portion in addition to the first outer portion 11 and the first inner portion 12
  • the first turn coil of the second planar coil module 2 includes When the second outer portion 21 and the second inner portion 22 include one portion, the three portions of the first turn coil of the first planar coil winding 1 can be connected to the second planar coil winding by three connecting portions one by one. These three parts of the first turn coil of 2 are turned on, so that a series cross structure as shown in FIG. 15 or FIG. 16 can be formed.
  • first turn coil of the first planar coil module 1 includes two parts in addition to the first outer portion 11 and the first inner portion 12, and the first turn coil of the second planar coil module 2
  • these four parts of the first turn coil of the first planar coil winding 1 can be connected to the second planar coil through four connection parts.
  • These four parts of the first turn coil of the winding 2 are turned on, so that a series cross structure as shown in FIG. 17, 18, or 19 can be formed.
  • the third refinement structure the position of the first outer portion 11 is opposite to the position of the second outer portion 21, and the position of the first inner portion 12 is opposite to the position of the second inner portion 22.
  • first outer portion 11 and the first inner portion 12 belong to the first turn coil of the first planar coil winding 1
  • the second outer portion 21 and the second inner portion 22 belong to the first One turn of the coil, so that the position of the first outer portion 11 and the position of the second outer portion 21 can be relatively easily set, and the position of the first inner portion 12 and the position of the second inner portion 22 can be relatively easily set.
  • the transmitting coil module and the receiving coil module are not necessarily completely aligned, and the two may be offset to a certain extent, resulting in a difference between the transmitting coil module and the receiving coil module.
  • the uneven magnetic field distribution among them results in different magnetic field distributions at different positions of the transmitting coil module or the receiving coil module.
  • the position of the first outer portion 11 is opposite to the position of the second outer portion 21, and the position of the first inner portion 12 is opposite to the position of the second inner portion 22, so that the transmitting coil module
  • the magnetic field in which the first outer portion 11 and the first inner portion 12 are located is the same as the magnetic field in which the second outer portion 21 and the second inner portion 22 are located.
  • the magnetic field The magnitude of the induction current generated when passing through the gap between the first outer portion 11 and the first inner portion 12 and the magnetic field generated when passing through the gap between the second outer portion 21 and the second inner portion 22 is relatively close , Which can effectively improve the cancellation effect of the induced current, and then can effectively improve the efficiency of wireless charging.
  • the coil module may further include a third connection portion L3 and a fourth connection portion L4.
  • the first planar coil winding 1 includes a first section and a second section, with an opening between the first section and the second section, and the first section includes the first section and the second section.
  • the third outer portion 31 and the third inner portion 32 have a gap extending in the winding direction of the first segment between the third outer portion 31 and the third inner portion 32, and the second segment includes the fourth outer portion 41 and the fourth inner portion 42, there is a gap extending between the fourth outer portion 41 and the fourth inner portion 42 in the winding direction of the second segment.
  • the other portions of the second planar coil winding 2 except the second outer portion 21 and the second inner portion 22 include a third section and a fourth section, with an opening between the third section and the fourth section, and the third section includes the first section
  • the fifth outer portion 51 and the fifth inner portion 52 have a gap extending in the winding direction of the third segment between the fifth outer portion 51 and the fifth inner portion 52
  • the fourth segment includes the sixth outer portion 61 and the sixth inner portion 62. There is a gap extending between the sixth outer portion 61 and the sixth inner portion 62 in the winding direction of the fourth segment.
  • the third outer portion 31 is connected in parallel with the fifth outer portion 51
  • the third inner portion 32 is connected in parallel with the fifth inner portion 52
  • the fourth outer portion 41 is connected in parallel with the sixth outer portion 61
  • the fourth inner portion 42 is connected with the sixth inner portion 62
  • the third connecting portion L3 is located between the third outer portion 31 and the fourth inner portion 42
  • the third outer portion 31 and the fourth inner portion 42 are electrically connected through the third connecting portion L3
  • the fourth connecting portion L4 is located Between the fifth inner portion 52 and the sixth outer portion 61, the fifth inner portion 52 and the sixth outer portion 61 are electrically connected through a fourth connection portion L4.
  • first turn coil of the first plane coil winding 1 and the first turn coil of the second plane coil winding 2 have a series crossing structure, and the first and second segments of the first plane coil winding 1 and the second
  • the third section and the fourth section of the planar coil winding 2 are a parallel cross structure.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can first flow into the third outer portion 31 and the second planar coil in the first section of the first planar coil winding 1.
  • the fifth outer portion 51 in the third segment of the winding 2 flows into the third inner portion 32 in the first segment of the first planar coil winding 1 and the fifth inner portion in the third segment of the second planar coil winding 2 at the same time.
  • Section 52 flows from the third outer portion 31 and the fifth outer portion 51 through the third connection portion L3 to the fourth inner portion 42 and the first of the second plane coil winding 2 in the second segment of the first plane coil winding 1
  • the sixth inner side portion 62 of the four segments flows from the third inner side portion 32 and the fifth inner side portion 52 through the fourth connection portion L4 to the fourth outer side portion 41 and the second side portion of the first planar coil winding 1 at the same time.
  • the sixth outer portion 61 in the fourth segment of the second planar coil winding 2 finally flows out from the second planar coil winding 2.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself may first flow into the sixth outer portion 61 in the fourth section of the second planar coil winding 2 and the first planar coil winding 1
  • the fourth outer portion 41 in the second segment flows into the sixth inner portion 62 in the fourth segment of the second planar coil winding 2 and the fourth inner portion 42 in the second segment of the first planar coil winding 1 at the same time, It then flows from the sixth outer portion 61 and the fourth outer portion 41 through the fourth connection portion L4 to the third inner portion 32 of the first section of the first planar coil winding 1 and the third section of the second planar coil winding 2.
  • the fifth inner side portion 52 and simultaneously flows from the sixth inner side portion 62 and the fourth inner side portion 42 through the third connection portion L3 to the third outer side portion 31 and the second plane in the first section of the first planar coil winding 1
  • the fifth outer portion 51 in the third segment of the coil winding 2 finally flows out from the first planar coil winding 1.
  • the structures of the third outer portion 31 and the third inner portion 32, the structures of the fourth outer portion 41 and the fourth inner portion 42, the structures of the fifth outer portion 51 and the fifth inner portion 52, and the sixth outer portion are similar to those of the first outer portion 11 and the first inner portion 12 described above, which are not described in the embodiment of the present application.
  • connection portion L3 is located in an opening provided between the first section and the second end
  • fourth connection portion L4 is located in an opening provided between the third section and the fourth section.
  • the third connection portion L3 and the third outer portion 31 can be electrically connected by means of integral molding, welding, via connection, etc.
  • the third connection portion L3 and the fourth inner portion 42 can be integrally formed, welded, or passed through.
  • Conduction can be achieved by means of hole connection, etc.
  • the fourth connection portion L4 and the fifth inner portion 52 can be connected by means of integral molding, welding, via-hole connection, etc., between the fourth connection portion L4 and the sixth outer portion 61. Conduction can be achieved through integral molding, welding, via connection, and other methods.
  • the third connecting portion L3 is not electrically connected to other parts of the coil module except the third outer portion 31, the fifth outer portion 51, the fourth inner portion 42 and the sixth inner portion 62.
  • the fourth connecting portion L4 is not electrically connected to The coil module is not electrically connected except for the fifth inner portion 52, the third inner portion 32, the sixth outer portion 61, and the fourth outer portion 41.
  • the third outer portion 31 and the fifth outer portion 51 may be connected in parallel through at least two via holes.
  • at least one third via hole penetrates the first end of the third outer portion 31 and the first end of the fifth outer portion 51, and the first end of the third outer portion 31 and the first end of the fifth outer portion 51 pass through.
  • the at least one third via hole is electrically connected
  • at least one fourth via hole penetrates the second end of the third outer portion 31 and the second end of the fifth outer portion 51, and the second end of the third outer portion 31 and the fifth The second end of the outer portion 51 is electrically connected through the at least one fourth via hole, so that the third outer portion 31 and the fifth outer portion 51 are connected in parallel.
  • the manner in which the third inner portion 32 is in parallel with the fifth inner portion 52, the manner in which the fourth outer portion 41 is in parallel with the sixth outer portion 61, and the manner in which the fourth inner portion 42 and the sixth inner portion 62 are connected in parallel are all the third outer portion
  • the manner in which 31 is parallel to the fifth outer portion 51 is similar, which is not described in the embodiment of the present application.
  • the third outer portion 31, the fifth outer portion 51, the third connecting portion L3, the fourth inner portion 42, and the sixth inner portion 62 constitute a target wire
  • the five inner side portions 52, the fourth connecting portion L4, the fourth outer side portion 41, and the sixth outer side portion 61 constitute a target wire.
  • These two target wires are on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located. There is a crossover on the projection.
  • the magnetic field passes through the gap between the third outer portion 31 and the third inner portion 32, the gap between the fifth outer portion 51 and the fifth inner portion 52, the fourth outer portion 41 and the fourth inner portion In the gap between 42 and the gap between the sixth outer portion 61 and the sixth inner portion 62, the directions of the induced currents I E generated by the two target wires are opposite to each other, so they can at least partially cancel each other, which can effectively
  • the circulating current loss in the first planar coil winding 1 and the second planar coil winding 2 is reduced, and the wireless charging efficiency of the coil module is improved.
  • the first and second segments are located at the N-th coil of the first planar coil winding 1
  • the third and fourth segments are located at the M-th coil of the second planar coil winding 2
  • the N-th coil The turn coil is any one of the turns between the innermost turn coil of the first planar coil winding 1 and the outermost turn coil of the first planar coil winding 1
  • the Mth turn coil is the innermost turn of the second planar coil winding 2. Any one of the coils between the coil and the outermost coil of the second planar coil winding 2;
  • One end of the N-th coil extends to one end of the N-1th coil in the first planar coil winding 1 located inside the N-th coil and adjacent to the N-th coil.
  • One end extends to one end of the (N + 1) th turn coil located outside the Nth turn coil and adjacent to the Nth turn coil in the first planar coil winding 1;
  • the Mth turn coil has a third section and a first There are other openings in addition to the openings between the four segments.
  • One end of the M-1th coil in the second planar coil winding 2 located inside the M-th coil and adjacent to the M-th coil passes through the other It is open and extends to one end of the K-th coil located outside the M-th coil in the second planar coil winding 2.
  • the first planar coil winding 1 and the second planar coil winding 2 are first connected in series with the N + 1th coil and the Nth coil, and then the Nth and Mth coils are connected in series.
  • the first coils of the planar coil winding 2 are connected in series, and finally the first coil of the second planar coil winding 2, the M-1th coil and the Kth coil are serially connected in series.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the (N + 1) th coil of the first planar coil winding 1, and then from the (N + 1) th coil Flows to the N-th coil of the first planar coil winding 1 and the M-th coil of the second planar coil winding 2, and then flows from the N-th coil and the M-th coil to the N-th coil of the first planar coil winding 1 -1 turn coil, and then flow from the N-1th turn coil to the first turn coil of the first plane coil winding 1, and from the first turn coil of the first plane coil winding 1 to the second plane coil winding 2
  • the first turn coil flows from the first turn coil of the second plane coil winding 2 to the M-1 turn coil of the second plane coil winding 2, and then flows from the M-1 turn coil to the second plane coil
  • the K-th coil of the winding 2 finally flows out from the second planar coil winding 2.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the K-th coil of the second planar coil winding 2, and then flow from the K-th coil to the second planar coil winding.
  • 2nd M-1th coil then flows from the M-1th coil to the first planar coil of the second planar coil winding 2 and flows from the first planar coil of the second planar coil winding 2 to the first planar coil
  • the first turn coil of winding 1 then flows from the first turn coil of the first planar coil winding 1 to the N-1 turn coil of the first planar coil winding 1, and then flows from the N-1 turn coil to the first
  • An N-th coil of the planar coil winding 1 and an M-th coil of the second planar coil winding 2 flow from the N-th coil and the M-th coil to the N + 1-th coil of the first planar coil winding 1
  • the coil finally flows out of the first planar coil winding 1.
  • the coil module may further include a lead-in terminal and a lead-out terminal connected to an external circuit, and the external circuit may provide power to the first planar coil winding 1 and the second planar coil winding 2 through the lead-in terminal and the lead-out terminal.
  • the first planar coil winding 1 and the second planar coil winding 2 may output electric energy to an external circuit through the lead-in terminal and the lead-out terminal.
  • the first turn coil of the first plane coil winding 1 is the innermost turn coil of the first plane coil winding 1
  • the first turn coil of the second plane coil winding 2 is the second plane coil.
  • the innermost winding coil of winding 2. See FIG. 3, FIG. 6, FIG. 21, or FIG. 23 at this moment.
  • the coil module includes a first wire D1 and a second wire D2. One end of the first wire D1 is the coil.
  • the first end of the module, the other end of the first wire D1 is connected to the end of the first target coil; the first end of the second wire D2 is the second end of the coil module, and the other end of the second wire D2 is The ends of the second target coil are connected; one of the first end of the coil module and the second end of the coil module is a lead-out terminal, and the other is a lead-out terminal.
  • the first target coil is the innermost coil of the first planar coil winding 1 and the innermost coil of the first planar coil winding 1 in the order from the innermost coil to the outermost coil.
  • the coil of which the ends are connected in series that is, the first target coil is the outermost turn of the at least one turn of the coil which is in series with the end of the innermost turn coil of the first planar coil winding 1 in sequence.
  • the second target coil is in the order from the innermost turn coil to the outermost turn coil.
  • the last turn of the multi-turn coil of the second plane coil winding 2 is connected in series with the end of the innermost turn coil of the second plane coil winding 2.
  • the coil, that is, the second target coil is the outermost one of the at least one turn of the coil that is serially connected in series with the end of the innermost turn coil of the second planar coil winding 2.
  • the last turn of the multi-turn coil of the first plane coil winding 1 and the end of the innermost turn coil of the first plane coil winding 1 The coils connected in series are the outermost turns of the first planar coil winding 1, and the outermost turns of the first planar coil winding 1 are the first target coils.
  • the coil in series with the end of the innermost turn coil of the second plane coil winding 2 of the multi-turn coil of the second plane coil winding 2 is the second plane.
  • the third-turn coil of the second planar coil winding 2 is the second target coil.
  • the other end of the first wire D1 When the other end of the first wire D1 is connected to the end of the first target coil, the other end of the first wire D1 may be directly overlapped with the end of the first target coil; or, if the first target coil is connected to the second The one-turn coil of the planar coil winding 2 is connected in parallel, and the other end of the first wire D1 and the end of the one-turn coil of the second planar coil winding 2 that is connected in parallel with the first target coil can be overlapped.
  • the manner in which the other end of the second wire D2 is connected to the end of the second target coil is similar to the manner in which the other end of the first wire D1 is connected to the end of the first target coil, which is not described in the embodiment of the present application.
  • the first wire D1 includes a first sub-wire d1 and a second sub-wire d2 separated from each other, and along the winding direction of the first target coil, the first target coil includes A seventh outer portion 71 and a seventh inner portion 72 separated from each other; an end portion of the seventh outer portion 71 is connected to an end portion of the first sub-conductor d1, and an end portion of the seventh inner portion 72 is connected to an end of the second sub-conductor d2 ⁇ ⁇ Connection.
  • an end of the seventh outer portion 71 is connected to the end of the first sub-conductor d1 to form a target wire
  • an end of the seventh inner portion 72 is connected to the end of the second sub-conductor d2 to form a target wire.
  • Target wire When the first sub-conductor d1 is located outside the second sub-conductor d2, the projections of the two target conductors on the plane where the first planar coil winding 1 (or the second planar coil winding 2) is located do not cross; When the wire d1 is located inside the second sub-wire d2, the projections of the two target wires on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located intersect.
  • an end portion of the first sub-conductor d1 is separated from an end portion of the second sub-conductor d2, and an end of the end of the first sub-conductor d1 far from the seventh outer portion 71 is far from the second sub-conductor d2.
  • One end of the end portion of the seven inner portion 72 may be connected to form a first end of the coil module, and the first end of the coil module may be formed by a terminal connection.
  • the second wire D2 includes a third sub-wire d3 and a fourth sub-wire d4 separated from each other; along the winding direction of the second target coil, the second target coil includes An eighth outer portion 81 and an eighth inner portion 82 separated from each other; an end portion of the eighth outer portion 81 is connected to an end of the third sub-conductor d3, and an end of the eighth inner portion 82 is connected to an end of the fourth sub-conductor d4. ⁇ ⁇ Connection.
  • an end of the eighth outer portion 81 is connected to the end of the third sub-wire d3, and a target wire is formed.
  • An end of the eighth inner portion 82 is connected to the end of the fourth sub-wire d4.
  • the third sub-conductor d3 is located outside the fourth sub-conductor d4, the projections of the two target conductors on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located do not cross;
  • the wire d3 is located inside the fourth sub-wire d4, the projections of the two target wires on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located intersect.
  • the end of the third sub-conducting wire d3 is separated from the end of the fourth sub-conducting wire d4, and the end of the third sub-conducting wire d3 which is far from the eighth outer portion 81 is far from the fourth sub-conducting wire d4.
  • One end of the end portion of the eight inner portion 82 may be connected to form a second end of the coil module, and a second end of the coil module may be formed by a terminal connection.
  • the first turn coil of the first plane coil winding 1 is the outermost turn coil of the first plane coil winding 1
  • the first turn coil of the second plane coil winding 2 is the second The outermost turn coil of the planar coil winding 2.
  • the coil module includes a first wire D1 and a second wire D2; one end of the first wire D1 is the first wire of the coil module. One end, the other end of the first lead D1 is connected to the end of the third target coil; one end of the second lead D2 is the second end of the coil module, and the other end of the second lead D2 is connected to the end of the fourth target coil.
  • One of the first end of the coil module and the second end of the coil module is the lead-in terminal and the other is the lead-out terminal.
  • the third target coil is the outermost coil of the first planar coil winding 1 and the outermost coil of the first planar coil winding 1 in the order from the outermost coil to the innermost coil.
  • the coil in which the ends are connected in series that is, the third target coil is the innermost one of the at least one turns of the coils that are in series with the ends of the outermost turns of the first planar coil winding 1 in sequence.
  • the fourth target coil is in the order from the outermost coil to the innermost coil.
  • the last one of the multi-turn coils of the second planar coil winding 2 is connected in series with the end of the outermost coil of the second planar coil winding 2.
  • the coil, that is, the fourth target coil is the innermost one-turn coil of at least one-turn coil in series with the end of the outermost-turn coil of the second planar coil winding 2 in sequence.
  • the other end of the first wire D1 When the other end of the first wire D1 is connected to the end of the third target coil, the other end of the first wire D1 may be directly overlapped with the end of the third target coil; or, if the third target coil is connected to the second target coil, The one-turn coil of the planar coil winding 2 is connected in parallel, and the other end of the first wire D1 and the end of the one-turn coil of the second planar coil winding 2 that is connected in parallel with the third target coil can be overlapped.
  • the manner in which the other end of the second lead D2 is connected to the end of the fourth target coil is similar to the manner in which the other end of the first lead D1 is connected to the end of the third target coil, which is not described in this embodiment of the present application.
  • the first wire D1 includes first and second sub-wires d1 and d2 separated from each other
  • the third target coil includes A seventh outer portion 71 and a seventh inner portion 72 separated from each other; an end portion of the seventh outer portion 71 is connected to an end portion of the first sub-conductor d1, and an end portion of the seventh inner portion 72 is connected to an end of the second sub-conductor d2 ⁇ ⁇ Connection.
  • an end of the seventh outer portion 71 is connected to the end of the first sub-conductor d1 to form a target wire
  • an end of the seventh inner portion 72 is connected to the end of the second sub-conductor d2 to form a target wire.
  • Target wire When the first sub-conductor d1 is located outside the second sub-conductor d2, the projections of the two target conductors on the plane where the first planar coil winding 1 (or the second planar coil winding 2) is located do not cross; When the wire d1 is located inside the second sub-wire d2, the projections of the two target wires on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located intersect.
  • an end portion of the first sub-conductor d1 is separated from an end portion of the second sub-conductor d2, and an end of the end of the first sub-conductor d1 far from the seventh outer portion 71 is far from the second sub-conductor d2.
  • One end of the end portion of the seven inner portion 72 may be connected to form a first end of the coil module, and the first end of the coil module may be formed by a terminal connection.
  • the second wire D2 includes a third sub-wire d3 and a fourth sub-wire d4 separated from each other; along the winding direction of the fourth target coil, the fourth target coil includes An eighth outer portion 81 and an eighth inner portion 82 separated from each other; an end portion of the eighth outer portion 81 is connected to an end of the third sub-conductor d3, and an end of the eighth inner portion 82 is connected to an end of the fourth sub-conductor d4. ⁇ ⁇ Connection.
  • an end of the eighth outer portion 81 is connected to an end of the third sub-conductor d3, and a target wire is formed.
  • An end of the eighth inner portion 82 is connected to an end of the fourth sub-conductor d4.
  • the projections of the two target conductors on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located do not cross;
  • the wire d3 is located inside the fourth sub-wire d4, the projections of the two target wires on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located intersect.
  • the end of the third sub-conducting wire d3 is separated from the end of the fourth sub-conducting wire d4, and the end of the third sub-conducting wire d3 which is far from the eighth outer portion 81 is far from the fourth sub-conducting wire d4.
  • One end of the end portion of the eight inner portion 82 may be connected to form a second end of the coil module, and a second end of the coil module may be formed by a terminal connection.
  • the coil module includes a first planar coil winding 1 and a second planar coil winding 2 which are insulated from each other.
  • Each of the first planar coil winding 1 and the second planar coil winding 2 includes a multi-turn coil.
  • the first turn coil of the first planar coil winding 1 includes a first outer portion 11 and a first inner portion 12, and an end portion of the first turn coil of the first planar coil winding 1 includes an end portion of the first outer portion 11 and a first An end portion of one inner portion 12 has a gap extending between the first outer portion 11 and the first inner portion 12 in the winding direction of the first turn coil of the first planar coil winding 1.
  • the first coil of the second planar coil winding 2 includes a second outer portion 21 and a second inner portion 22, and an end portion of the first turn coil of the second planar coil winding 2 includes an end portion of the second outer portion 21 and a first An end portion of the two inner side portions 22 has a gap extending between the second outer side portion 21 and the second inner side portion 22 in the winding direction of the first turn coil of the second planar coil winding 2.
  • An end portion of the first outer portion 11 and an end portion of the second inner portion 22 are electrically connected, and an end portion of the second outer portion 21 and an end portion of the first inner portion 12 are electrically connected.
  • a target wire composed of the first outer portion 11 and the second inner portion 22 and a target wire composed of the first inner portion 12 and the second outer portion 21 can be made in the first plane coil winding 1 (or the second plane coil The projections on the plane on which the windings 2) lie cross.
  • the first outer portion 11 and the first inner portion 12 and the gap between the second outer portion 21 and the second inner portion 22 the first outer portion 11 and the first
  • the induced currents generated on the two inner side portions 22 are opposite to the directions of the induced currents generated on the first inner side portion 12 and the second outer side portion 21, so they can at least partially cancel each other, thereby effectively reducing the first planar coil windings 1 and the first
  • the circulating current loss in the two-plane coil winding 2 improves the wireless charging efficiency of the coil module.
  • FIG. 24 is a schematic structural diagram of a coil module according to an embodiment of the present application.
  • the coil module includes: a first connecting portion L1, a second connecting portion L2, a first conducting wire D1, a second conducting wire D2, and a first planar coil winding 1 and a second planar coil winding 2 which are insulated from each other.
  • Each of the planar coil winding 1 and the second planar coil winding 2 includes a multi-turn coil.
  • the innermost turn coil of the first planar coil winding 1 includes a first segment and a second segment, with an opening between the first segment and the second segment.
  • the first segment includes a first outer portion 11 and a first inner portion 12.
  • There is a gap extending in the winding direction of the second segment, the first end of the second segment is the end of the innermost turn coil of the first planar coil winding 1, the second end of the second segment and the first end of the second segment One end is opposite and close to the first end of the first section.
  • the innermost turn coil of the second planar coil winding 2 includes a third segment and a fourth segment, with an opening between the third segment and the fourth segment.
  • the third segment includes a third outer portion 31 and a third inner portion 32. There is a gap extending in the winding direction of the third segment between the outer portion 31 and the third inner portion 32.
  • the fourth segment includes a fourth outer portion 41 and a fourth inner portion 42, and a fourth outer portion 41 and a fourth inner portion 42. There is a gap extending in the winding direction of the fourth segment, the first end of the third segment is the end of the innermost turn coil of the second planar coil winding 2, the second end of the third segment and the first end of the third segment One end is opposite and close to the first end of the fourth segment.
  • the first outside portion 11 is connected in parallel with the third outside portion 31, the first inside portion 12 is connected in parallel with the third inside portion 32, the second outside portion 21 is connected in parallel with the fourth outside portion 41, and the second inside portion 22 is connected with the fourth inside portion 42 In parallel;
  • the first connecting portion L1 is located between the first outer portion 11 and the second inner portion 22, and the first outer portion 11 and the second inner portion 22 are electrically connected through the first connecting portion L1, and the second connecting portion L2 is located Between the third inner portion 32 and the fourth outer portion 41, the third inner portion 32 and the fourth outer portion 41 are electrically connected through the second connection portion L2.
  • One end of the first wire D1 is the first end of the coil module, and the other end of the first wire D1 is in communication with the second end of the first section; one end of the second wire D2 is the second end of the coil module, The other end of the second wire D2 is in communication with the second end of the fourth section; one of the first end of the coil module and the second end of the coil module is the lead-in terminal and the other is the lead-out terminal.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the first wire D1 and then from the first wire D1 into the first section of the first planar coil winding 1 The second end, and then flows from the first outer portion 11 in the first segment and the third outer portion 31 in the third segment of the second plane coil winding 2 to the first plane coil winding 1 through the first connection portion L1.
  • the second inner side portion 22 in the second stage and the fourth inner side portion 42 in the fourth stage of the second planar coil winding 2 are simultaneously from the first inner side portion 12 in the first stage and the first
  • the third inner portion 32 of the three segments flows to the second outer portion 21 in the second segment of the first planar coil winding 1 and the fourth outer portion in the fourth segment of the second planar coil winding 2 through the second connection portion L2.
  • the portion 41 then flows from the second end of the fourth segment to the second wire D2, and finally flows out from the second wire D2.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the second wire D2 and then flow from the second wire D2 into the second end of the fourth segment of the second planar coil winding 2 , And then flows from the fourth outer portion 41 in the fourth segment and the second outer portion 21 in the second segment of the first planar coil winding 1 to the third segment of the second planar coil winding 2 through the second connection portion L2.
  • the second inner portion 22 of the second planar coil winding 2 flows through the first connecting portion L1 to the third outer portion 31 in the third segment of the second planar coil winding 2 and the first outer portion 11 in the first segment of the first planar coil winding 1, After that, it flows from the second end of the first segment to the first wire D1, and finally flows out from the first wire D1.
  • the first planar coil winding 1 (or the second planar coil winding 2) is a conductive pattern wound by a conductor, and the conductive pattern may be a circular ring, an elliptical ring, etc.
  • the first planar coil winding 1 Any one of the multi-turn coils included in the (or the second planar coil winding 2) is a conductor wound uniformly at 360 degrees.
  • the widths of the multi-turn coils of the first planar coil winding 1 (or the second planar coil winding 2) may be different. For example, in the order from the innermost coil to the outermost coil, the first planar coil winding 1 (or second The width of the multi-turn coil of the planar coil winding 2) may be gradually increased, or may be increased first and then decreased.
  • the mutual insulation between the first planar coil winding 1 and the second planar coil winding 2 can be achieved by using an insulating medium.
  • the insulating medium between the first planar coil winding 1 and the second planar coil winding 2 is used to isolate the first planar coil winding. 1 and the second planar coil winding 2 keep the other parts of the two coils insulated from each other except for the part connected to each other.
  • an insulating layer may be provided between the first planar coil winding 1 and the second planar coil winding 2.
  • the first planar coil winding 1 may be disposed on a circuit board such as a PCB or an FPC
  • the second planar coil The winding 2 can also be provided on a circuit board such as a PCB or an FPC.
  • the surface of the multi-turn coil of the first planar coil winding 1 and the surface of the multi-turn coil of the second planar coil winding 2 may both be covered with an insulating material.
  • the coil may be a flat wire or an enameled wire
  • the multi-turn coil of the second planar coil winding 2 may also be a flat wire or an enameled wire.
  • the multi-turn coil of the first plane coil winding 1 When the multi-turn coil of the first plane coil winding 1 (or the second plane coil winding 2) is a flat wire, the multi-turn coil of the first plane coil winding 1 (or the second plane coil winding 2) may be processed by a die-cutting process. , Etching method or electroplating additive method; when the multi-turn coil of the first planar coil winding 1 (or the second planar coil winding 2) is an enameled wire, the first planar coil winding 1 (or the second planar coil winding 2) It may be wound by multiple wires, and each of the multiple wires may be a single-stranded wire or a multi-stranded wire, which is not limited in the embodiment of the present application.
  • the gap extending between the first outer side portion 11 and the first inner side portion 12 in the winding direction of the first segment of the innermost turn coil of the first planar coil winding 1 may be cut, chemically etched, or And around the formation.
  • the first segment of the innermost turn coil of the first planar coil winding 1 may be cut, chemically etched, etc. to obtain the first outer portion 11 and the first inner portion 12, and the first outer portion 11 and There is a gap between the first inner portions 12.
  • multiple wires may be wound into the first segment of the innermost turn coil of the first planar coil winding 1.
  • the first outer portion 11 may be one wire
  • the first inner portion 12 may be another one.
  • the lead has a gap between the first outer portion 11 and the first inner portion 12.
  • an end of the first outer portion 11 near the second inner portion 22 is separated from an end of the first inner portion 12 near the second inner portion 22.
  • the end of the first outer portion 11 that is far from the second inner portion 22 and the end of the first inner portion 12 that is far from the second inner portion 22 can be divided by the first segment and the first portion of the innermost turn coil of the first planar coil winding 1.
  • Continuity can be achieved in parts other than the second segment, or can be achieved through turns other than the innermost turn coil in the first planar coil winding 1, or can be connected to the coil module through the first planar coil winding 1
  • the lead-out terminals or the wires connected between the lead-in terminals are connected, or the connection between the coil module and an external circuit can be conducted.
  • the gap extending between the second outer portion 21 and the second inner portion 22 in the winding direction of the second segment of the innermost turn coil of the first planar coil winding 1 may be cut, chemically etched, or And around the formation.
  • the second segment of the innermost turn coil of the first planar coil winding 1 may be cut, chemically etched, etc. to obtain the second outer portion 21 and the second inner portion 22.
  • a plurality of wires may be wound into the second section of the innermost turn coil of the first planar coil winding 1 at this time.
  • the second outer portion 21 may be one wire
  • the second inner portion 22 may be another one.
  • the lead wire has a gap between the second outer portion 21 and the second inner portion 22.
  • an end of the second outer portion 21 near the first outer portion 11 is separated from an end of the second inner portion 22 near the first outer portion 11.
  • the end of the second outer portion 21 that is far from the first outer portion 11 and the end of the second inner portion 22 that is far from the first outer portion 11 can be divided by the first segment and the first portion of the innermost turn coil of the first planar coil winding 1.
  • Continuity can be achieved in parts other than the second segment, or can be achieved through turns other than the innermost turn coil in the first planar coil winding 1, or can be connected to the coil module through the first planar coil winding 1
  • the lead-out terminals or the wires connected between the lead-in terminals are connected, or the connection between the coil module and an external circuit can be conducted.
  • the gap extending between the third outer side portion 31 and the third inner side portion 32 in the winding direction of the third segment of the innermost turns of the second planar coil winding 2 may be cut, chemically etched, or And around the formation.
  • the third segment in the innermost turn coil of the second planar coil winding 2 may be cut, chemically etched, etc. to obtain the third outer portion 31 and the third inner portion 32.
  • multiple wires may be wound into the third segment of the innermost turn coil of the second planar coil winding 2.
  • the third outer portion 31 may be one wire
  • the third inner portion 32 may be another one
  • the lead has a gap between the third outer portion 31 and the third inner portion 32.
  • an end of the third outer portion 31 near the fourth outer portion 41 is separated from an end of the third inner portion 32 near the fourth outer portion 41.
  • An end of the third outer portion 31 far from the fourth outer portion 41 and an end of the third inner portion 32 far from the fourth outer portion 41 can be divided by the third segment and the first portion of the innermost turn coil of the second planar coil winding 2.
  • Continuity can be achieved in parts other than four segments, or can be achieved through turns of the second planar coil winding 2 other than the innermost turns, or through the second planar coil winding 2 and the coil module
  • the lead-out terminals or the wires connected between the lead-in terminals are connected, or the connection between the coil module and an external circuit can be conducted.
  • the gap extending between the fourth outer side portion 41 and the fourth inner side portion 42 in the winding direction of the fourth segment of the innermost turn coil of the second planar coil winding 2 may be cut, chemically etched, or And around the formation.
  • the fourth segment of the innermost turn coil of the second planar coil winding 2 may be cut, chemically etched, etc. to obtain the fourth outer portion 41 and the fourth inner portion 42.
  • multiple wires may be wound in parallel to form the fourth segment of the innermost turns of the second planar coil winding 2.
  • the fourth outer portion 41 may be one wire
  • the fourth inner portion 42 may be another one.
  • the lead wire has a gap between the fourth outer portion 41 and the fourth inner portion 42.
  • an end of the fourth outer portion 41 near the third inner portion 32 is separated from an end of the fourth inner portion 42 near the third inner portion 32.
  • the end of the fourth outer portion 41 that is far from the third inner portion 32 and the end of the fourth inner portion 42 that is far from the third inner portion 32 can be divided by the third segment and the first of the innermost turns of the second planar coil winding 2.
  • Continuity can be achieved in parts other than four segments, or can be achieved through turns of the second planar coil winding 2 other than the innermost turns, or through the second planar coil winding 2 and the coil module
  • the lead-out terminals or the wires connected between the lead-in terminals are connected, or the connection between the coil module and an external circuit can be conducted.
  • the other end of the first wire D1 when the other end of the first wire D1 is in communication with the second end of the first segment, there may be one or more turns of coils connected between the other end of the first wire D1 and the second end of the first segment.
  • the other end of the first wire D1 can communicate with the second end of the first segment through the one or more turns of the coil.
  • the other end of the first wire D1 may be connected to an end of the first target coil.
  • the first target coil is a coil in which the last turn of the multi-turn coil of the first planar coil winding 1 is connected in series with the second end of the first segment in the order from the innermost turn coil to the outermost turn coil, that is, the first The target coil is the outermost coil among at least one coil of the multi-turn coil of the first planar coil winding 1 connected in series with the second end of the first segment.
  • a turn or a multi-turn coil may be connected between the other end of the second wire D2 and the second end of the fourth section.
  • the other end of D2 can communicate with the second end of the fourth segment through the one or more turns of the coil.
  • the other end of the second wire D2 may be connected to an end of the second target coil.
  • the second target coil is a coil in which the last turn of the multi-turn coil of the second planar coil winding 2 is in series with the second end of the fourth segment in the order from the innermost turn coil to the outermost turn coil, that is, the second The target coil is the outermost coil of at least one turn of the multi-turn coil of the second planar coil winding 2 connected in series with the second end of the fourth segment.
  • first connecting portion L1 is located in the opening between the first and second sections
  • second connecting portion L2 is located in the opening between the third and fourth sections.
  • the first outer portion 11 and the first connecting portion L1 can be electrically connected by means of integral molding, welding, and the like, and the first connecting portion L1 and the second inner portion 22 can also be electrically connected by means of integral molding, welding, or the like.
  • the outer portion 11, the first connection portion L1, and the second inner portion 22 are integrally formed, the first outer portion 11, the first connection portion L1, and the second inner portion 22 belong to one wire.
  • the third inner portion 32 and the second connecting portion L2 can be electrically connected by integral molding, welding, and the like, and the second connecting portion L2 and the fourth outer portion 41 can also be electrically connected by integral molding, welding, and the like.
  • the inside portion 32, the second connection portion L2, and the fourth outside portion 41 are integrally molded, the third inside portion 32, the second connection portion L2, and the fourth outside portion 41 belong to one wire.
  • first connection portion L1 is not electrically connected to the coil module other than the first outer portion 11 and the second inner portion 22.
  • the second connection portion L2 is not electrically connected to the coil winding other than the third inner portion 32 and the fourth outer portion 41.
  • the first outer portion 11 and the third outer portion 31 may be connected in parallel through at least two via holes.
  • at least one first via hole penetrates the first end of the first outer portion 11 and the first end of the third outer portion 31, and the first end of the first outer portion 11 and the first end of the third outer portion 31 pass through.
  • the at least one first via hole is electrically connected
  • the at least one second via hole penetrates the second end of the first outer portion 11 and the second end of the third outer portion 31, and the second end of the first outer portion 11 and the third
  • the second end of the outer portion 31 is electrically connected through the at least one second via hole, so that the first outer portion 11 and the third outer portion 31 are connected in parallel.
  • the manner in which 11 is parallel to the third outer portion 31 is similar, which is not described in the embodiment of the present application.
  • the winding direction of the multi-turn coil of the first planar coil winding 1 is opposite to the winding direction of the multi-turn coil of the second planar coil winding 2.
  • the current flowing in the first planar coil winding 1 is opposite to the second plane.
  • the current flows in the coil winding 2 in the same direction. And, after the current flows into the first wire D1, it first flows through the first plane coil winding 1, then through the second plane coil winding 2, and finally flows out from the second wire D2; or, after the current flows into the second wire D2, it is It first flows through the second planar coil winding 2, then flows through the first planar coil winding 1, and finally flows out from the first wire D1.
  • a parallel cross structure is formed between the innermost turn coil of the first planar coil winding 1 and the innermost turn coil of the second planar coil winding 2. That is, the first outer portion 11, the third outer portion 31, the first connecting portion L1, the second inner portion 22, and the fourth inner portion 42 constitute a target lead, and the first inner portion 12, the third inner portion 32, The second connecting portion L2, the second outer portion 21, and the fourth outer portion 41 constitute a target wire, and the projections of the two target wires on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located intersect. .
  • the magnetic field passes through the gap between the first outer portion 11 and the first inner portion 12, the gap between the third outer portion 31 and the third inner portion 32, and the second outer portion 21 and the second inner portion.
  • the directions of the induced currents generated by the two target wires are opposite, so they can at least partially offset each other, which can effectively reduce the Circulation current loss in one planar coil winding 1 and the second planar coil winding 2 improves the wireless charging efficiency of the coil module.
  • the coil module further includes a third connection portion L3 and a fourth connection portion L4.
  • the target coil of the first planar coil winding 1 includes a fifth segment with an opening between the fifth segment and the first segment.
  • the fifth segment includes a fifth outer portion 51 and a fifth inner portion 52.
  • the target coil is a first planar coil.
  • a one-turn coil of the winding 1 located outside the innermost-turn coil of the first planar coil winding 1 and adjacent to the innermost-turn coil of the first planar coil winding 1, between the fifth outer portion 51 and the fifth inner portion 52 There is a gap extending in the winding direction of the target coil, and the other end of the first wire D1 is communicated with the second end of the first segment through the target coil.
  • the third connecting portion L3 is located between the first outer portion 11 and the fifth inner portion 52.
  • the first outer portion 11 and the fifth inner portion 52 are electrically connected by the third connecting portion L3, and the fourth connecting portion L4 is located on the first inner side.
  • the fourth connecting portion L4 is located on the first inner side.
  • the first inner portion 12 and the fifth outer portion 51 are electrically connected through a fourth connection portion L4.
  • both the third connection portion L3 and the fourth connection portion L4 are located in the opening between the fifth section and the first section. There is no electrical connection between the third connection portion L3 and the fourth connection portion L4.
  • the third connection portion L3 is not electrically connected to the coil module other than the first outer portion 11, the third outer portion 31, and the fifth inner portion 52.
  • the fourth connection portion L4 is not electrically connected to the coil winding other than the first inner portion 12, the third inner portion 32, and the fifth outer portion 51.
  • the first inner portion 12, the fourth connecting portion L4, and the fifth outer portion 51 may be integrally formed.
  • the third connecting portion L3 includes a first portion and a second portion that are separated, and the first portion is integrated with the fifth inner portion 52. Molding, the second portion is integrally formed with the third outer portion 31, and the ends of the first portion and the second portion are close to each other (that is, the end of the first portion away from the fifth inner portion 52 and the end of the second portion away from the third outer portion 31)
  • the phases are connected, for example, at least one via hole may penetrate an end portion where the first portion and the second portion are close to each other, and an end portion where the first portion and the second portion are close to each other may be electrically connected through the at least one via hole.
  • a target wire composed of the first outer portion 11, the third connection portion L3, and the fifth inner portion 52 and a target wire composed of the first inner portion 12, the fourth connection portion L4, and the fifth outer portion 51 There is an intersection in the projections on the plane where the first planar coil winding 1 (or the second planar coil winding 2) is located.
  • the first outer portion 11 and the first inner portion 12 and the gap between the fifth outer portion 51 and the fifth inner portion 52 the first outer portion 11 and the first The induced currents generated on the second inner portion 22 are opposite to the directions of the induced currents generated on the fifth outer portion 51 and the fifth inner portion 52, so they can at least partially cancel each other, thereby effectively reducing the first planar coil winding 1 and the first
  • the circulating current loss in the two-plane coil winding 2 improves the wireless charging efficiency of the coil module.
  • the embodiment of the present application can not only realize a parallel crossing between the innermost turn coil of the first planar coil winding 1 and the innermost turn coil of the second planar coil winding 2, but also implement the first planar coil Any one of the coils h1 other than the innermost coil in the winding 1 and any one of the coils h2 other than the innermost coil in the second planar coil winding 2 are connected in parallel.
  • the parallel cross structure between the coil h1 and the coil h2 is similar to the parallel cross structure between the innermost turn coil of the first planar coil winding 1 and the innermost turn coil of the second planar coil winding 2. This embodiment of the present application does not address this. More details.
  • the coil h1 may be connected between the second end of the first section and the other end of the first wire D1, and the coil h2 has an opening other than the part forming a parallel cross structure with the coil h1.
  • the other end of the second wire D2 may pass through the opening and communicate with the second end of the fourth section.
  • the coil module includes a first connection portion L1, a second connection portion L2, a first wire D1, a second wire D2, and a first planar coil winding 1 and a second planar coil winding 2 which are insulated from each other.
  • the innermost turn coil of the first planar coil winding 1 includes a first segment and a second segment, with an opening between the first segment and the second segment.
  • the first segment includes a first outer portion 11 and a first inner portion 12, and a second
  • the segment includes a second outer portion 21 and a second inner portion 22.
  • the first end of the second segment is the end of the innermost turn coil of the first planar coil winding 1.
  • the second end of the second segment and the first end of the second segment One end is opposite and close to the first end of the first section.
  • the innermost turn coil of the second planar coil winding 2 includes a third segment and a fourth segment, with an opening between the third segment and the fourth segment.
  • the third segment includes a third outer portion 31 and a third inner portion 32.
  • the segment includes a fourth outer portion 41 and a fourth inner portion 42.
  • the first end of the third segment is the end of the innermost turn coil of the second planar coil winding 2.
  • the second end of the third segment and the first end of the third segment One end is opposite and close to the first end of the fourth segment.
  • the first outside portion 11 is connected in parallel with the third outside portion 31, the first inside portion 12 is connected in parallel with the third inside portion 32, the second outside portion 21 is connected in parallel with the fourth outside portion 41, and the second inside portion 22 is connected with the fourth inside portion 42 In parallel;
  • the first connecting portion L1 is located between the first outer portion 11 and the second inner portion 22, and the first outer portion 11 and the second inner portion 22 are electrically connected through the first connecting portion L1, and the second connecting portion L2 is located Between the third inner portion 32 and the fourth outer portion 41, the third inner portion 32 and the fourth outer portion 41 are electrically connected through the second connection portion L2.
  • One end of the first wire D1 is the first end of the coil module, and the other end of the first wire D1 is in communication with the second end of the first section; one end of the second wire D2 is the second end of the coil module, The other end of the second wire D2 is in communication with the second end of the fourth section; one of the first end of the coil module and the second end of the coil module is the lead-in terminal and the other is the lead-out terminal.
  • the first outer portion 11, the third outer portion 31, the first connecting portion L1, the second inner portion 22, and the fourth inner portion 42 constitute a target wire
  • the first inner portion 12, the third inner portion 32, and the second The connecting portion L2, the second outer portion 21, and the fourth outer portion 41 constitute a target wire
  • the projections of the two target wires on the plane where the first plane coil winding 1 (or the second plane coil winding 2) is located intersect.
  • the magnetic field passes through the gap between the first outer portion 11 and the first inner portion 12, the gap between the third outer portion 31 and the third inner portion 32, and the second outer portion 21 and the second inner portion.
  • the directions of the induced currents generated by the two target wires are opposite, so they can at least partially offset each other, which can effectively reduce the first Circulation current loss in one planar coil winding 1 and the second planar coil winding 2 improves the wireless charging efficiency of the coil module.
  • FIG. 27 or FIG. 28 is a schematic structural diagram of a coil module according to an embodiment of the present application.
  • the coil module includes: a first connection portion L1 and a second connection portion L2, and a first planar coil winding 1 and a second planar coil winding 2, which are insulated from each other,
  • Each of the second planar coil windings 2 includes a multi-turn coil.
  • the first planar coil winding 1 includes a first segment and a second segment, and there is an opening between the first segment and the second segment.
  • the first segment includes the first outer portion 11 and The first inner portion 12 has a gap extending between the first outer portion 11 and the first inner portion 12 in the winding direction of the first segment.
  • the second segment includes the second outer portion 21 and the second inner portion 22, and the second outer portion. There is a gap between the portion 21 and the second inner portion 22 extending in the winding direction of the second segment.
  • the first connection portion L1 is located between the first outer portion 11 and the second inner portion 22, and the first outer portion 11 and the second The inner portion 22 is electrically connected by the first connection portion L1.
  • the second planar coil winding 2 includes a third section, and along the thickness direction of the first planar coil winding 1, the end of the third section near the first section and the end of the second section near the first section at least partially overlap; the third section
  • the third outer portion 31 and the third inner portion 32 are included.
  • the third outer portion 31 and the third inner portion 32 have a gap extending in the winding direction of the third segment.
  • the second connecting portion L2 is located between the third outer portion 31 and the third outer portion 31. Between the first inner portion 12, the third outer portion 31 and the first inner portion 12 are electrically connected by the second connection portion L2. An end of the third outer portion 31 near the first inner portion 12 and the second outer portion 21 is electrically connected to each other. One end near the first inner portion 12 is communicated.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the first outer portion 11 and the first inner portion 12 in the first segment of the first planar coil winding 1. , And then flows from the first outside portion 11 through the first connection portion L1 to the second inside portion 22 in the second section of the first planar coil winding 1, and at the same time flows from the first inside portion 12 through the second connection portion L2 to The third outer portion 31 in the third segment of the second planar coil winding 2 flows from the end of the third outer portion 31 near the first inner portion 12 to the end of the second outer portion 21 near the first inner portion 12 After that, it flows from the second inner portion 22 and the second outer portion 21 to the second planar coil winding 2, and finally flows out from the second planar coil winding 2.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the second planar coil winding 2 and flow from the second planar coil winding 2 to the second section of the first planar coil winding 1 And the second outer portion 21 and the second inner portion 22, and then flows from the second inner portion 22 through the first connection portion L1 to the first outer portion 21 in the first segment of the first planar coil winding 1, and simultaneously from The end of the second outer portion 21 near the first inner portion 12 flows to the end of the third outer portion 31 near the first inner portion 12 and flows from the third outer portion 31 to the first planar coil through the second connection portion L2. The first inner portion 12 in the first section of the winding 2 finally flows out of the first planar coil winding 1.
  • the first planar coil winding 1 (or the second planar coil winding 2) is a conductive pattern wound by a conductor, and the conductive pattern may be a circular ring, an elliptical ring, etc.
  • the first planar coil winding 1 Any one of the multi-turn coils included in the (or the second planar coil winding 2) is a conductor wound uniformly at 360 degrees.
  • the widths of the multi-turn coils of the first planar coil winding 1 (or the second planar coil winding 2) may be different. For example, in the order from the innermost coil to the outermost coil, the first planar coil winding 1 (or second The width of the multi-turn coil of the planar coil winding 2) may be gradually increased, or may be increased first and then decreased.
  • the mutual insulation between the first planar coil winding 1 and the second planar coil winding 2 can be achieved by using an insulating medium.
  • the insulating medium between the first planar coil winding 1 and the second planar coil winding 2 is used to isolate the first planar coil winding. 1 and the second planar coil winding 2 keep the other parts of the two coils insulated from each other except for the part connected to each other.
  • an insulating layer may be provided between the first planar coil winding 1 and the second planar coil winding 2.
  • the first planar coil winding 1 may be disposed on a circuit board such as a PCB or an FPC
  • the second planar coil The winding 2 can also be provided on a circuit board such as a PCB or an FPC.
  • the surface of the multi-turn coil of the first planar coil winding 1 and the surface of the multi-turn coil of the second planar coil winding 2 may both be covered with an insulating material.
  • the coil may be a flat wire or an enameled wire
  • the multi-turn coil of the second planar coil winding 2 may also be a flat wire or an enameled wire.
  • the multi-turn coil of the first plane coil winding 1 When the multi-turn coil of the first plane coil winding 1 (or the second plane coil winding 2) is a flat wire, the multi-turn coil of the first plane coil winding 1 (or the second plane coil winding 2) may be processed by a die-cutting process. , Etching method or electroplating additive method; when the multi-turn coil of the first planar coil winding 1 (or the second planar coil winding 2) is an enameled wire, the first planar coil winding 1 (or the second planar coil winding 2) It may be wound by multiple wires, and each of the multiple wires may be a single-stranded wire or a multi-stranded wire, which is not limited in the embodiment of the present application.
  • a gap extending between the first outer side portion 11 and the first inner side portion 12 in the winding direction of the first section may be formed by cutting, chemical etching, or parallel winding.
  • the first segment may be cut, chemically etched, or the like to obtain the first outer portion 11 and the first inner portion 12. At this time, there is a gap between the first outer portion 11 and the first inner portion 12.
  • multiple wires may be wound into a first segment in parallel.
  • the first outer portion 11 may be one wire
  • the first inner portion 12 may be another wire
  • the first outer portion 11 and the first inner portion 12 There is a gap between them.
  • an end of the first outer portion 11 near the second inner portion 22 is separated from an end of the first inner portion 12 near the second inner portion 22.
  • the end of the first outer portion 11 that is far from the second inner portion 22 and the end of the first inner portion 12 that is far from the second inner portion 22 can pass through the first planar coil winding 1 except for the first and second segments.
  • Continuity can be achieved in other parts, or can be achieved through the wires connected between the first planar coil winding 1 and the lead-out or lead-in end of the coil module, or can be achieved through the connection terminals of the coil module and external circuits Continuity and so on.
  • the gap extending between the second outer portion 21 and the second inner portion 22 in the winding direction of the second segment may be formed by cutting, chemical etching, or parallel winding.
  • the second segment may be cut, chemically etched, or the like to obtain the second outer portion 21 and the second inner portion 22.
  • a plurality of wires may be wound into a second segment in parallel.
  • the second outer portion 21 may be one wire
  • the second inner portion 22 may be another wire
  • the second outer portion 21 and the second inner portion 22 There is a gap between them.
  • an end of the second outer portion 21 near the first outer portion 11 is separated from an end of the second inner portion 22 near the first outer portion 11.
  • the end of the second outer portion 21 that is far from the first outer portion 11 and the end of the second inner portion 22 that is far from the first outer portion 11 can pass through the first planar coil winding 1 except for the first and second segments.
  • Continuity can be achieved in other parts, or can be achieved through the wires connected between the first planar coil winding 1 and the lead-out or lead-in end of the coil module, or can be achieved through the connection terminals of the coil module and external circuits Continuity and so on.
  • the gap extending between the third outer side portion 31 and the third inner side portion 32 in the winding direction of the third segment may be formed by cutting, chemical etching, or parallel winding. Specifically, the third segment may be cut, chemically etched, etc. to obtain the third outer portion 31 and the third inner portion 32. At this time, there is a gap between the third outer portion 31 and the third inner portion 32. Alternatively, multiple wires may be wound into a third segment in parallel. At this time, the third outer portion 31 may be one wire, the third inner portion 32 may be another wire, and the third outer portion 31 and the third inner portion 32 may be There is a gap between them.
  • an end of the third outer portion 31 near the first outer portion 11 is separated from an end of the third inner portion 32 near the first outer portion 11.
  • the end of the third outer portion 31 far from the first outer portion 11 and the end of the third inner portion 32 far from the first outer portion 11 can be guided by other portions of the second planar coil winding 2 except the third section. Conduction can be achieved either through the wires connected between the second planar coil winding 2 and the lead-out end or lead-in end of the coil module, or through the connection terminals of the coil module and external circuits.
  • both the first connection portion L1 and the second connection portion L2 are located in the opening between the first section and the second section.
  • the first connection portion L1 is not electrically connected to the coil module other than the first outer portion 11, the second inner portion 22, and the third inner portion 32.
  • the second connection portion L2 is not electrically connected to the coil winding other than the third outer portion 31, the second outer portion 21, and the first inner portion 12.
  • the first outer portion 11, the first connecting portion L1, and the second inner portion 22 are integrally formed.
  • the second connecting portion L2 may include a first portion and a second portion that are separated, and the first portion is integrated with the first inner portion 12. Molding, the second portion and the third outer portion 31 are integrally formed, and the ends of the first portion and the second portion are close to each other (that is, the end of the first portion away from the first inner portion 12 and the end of the second portion away from the third outer portion 31 )
  • Phase continuity for example, at least one via may pass through an end portion where the first and second portions are close to each other, and an end where the first portion and the second portion are close to each other may be electrically connected through the at least one via hole.
  • At least one first via hole penetrates the second outer portion 21 near the first An end of one inner portion 12 and an end of the third outer portion 31 near the first inner portion 12, an end of the second outer portion 21 near the first inner portion 12 and an end of the third outer portion 31 near the first inner portion 12 One end is electrically connected through the at least one first via.
  • the first planar coil winding 1 is referred to as a first layer coil winding
  • the second planar coil winding 2 is referred to as a second layer coil winding.
  • the third outer side portion 31 and the second outer side portion 21 cross the layers. It is connected in this way, and the series connection between the first segment and the second segment in the first planar coil winding 1 can be achieved through the first connection portion L1 and the second connection portion L2.
  • a target wire composed of the first outer portion 11, the first connection portion L2, and the second inner portion 22 and a target wire composed of the first inner portion 12, the second connection portion L2, and the second outer portion 21 are in the first There is an intersection in the projections on the plane where the planar coil winding 1 (or the second planar coil winding 2) is located.
  • the first outer portion 11 and the first inner portion 12 and the gap between the second outer portion 21 and the second inner portion 22 the first outer portion 11 and the first
  • the direction of the induced current generated on the second inner portion 22 is opposite to the direction of the induced current generated on the second outer portion 21 and the second inner portion 22, so they can at least partially cancel each other, which can effectively reduce the first planar coil winding 1 and the first
  • the circulating current loss in the two-plane coil winding 2 improves the wireless charging efficiency of the coil module.
  • an end of the second inner portion 22 near the first outer portion 11 and an end of the third inner portion 32 near the first outer portion 11 communicate with each other.
  • at least one second via hole penetrates the second inner portion 22.
  • One end of the portion 11 is electrically connected through the at least one second via hole.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the first outer portion 11 and the first inner portion 12 in the first segment of the first planar coil winding 1. And then flow from the first outer portion 11 through the first connection portion L1 to the second inner portion 22 in the second segment of the first planar coil winding 1 and the third inner portion in the third segment of the second planar coil winding 2 32, and simultaneously flows from the first inner portion 12 through the second connection portion L2 to the second outer portion 21 in the second segment of the first planar coil winding 1 and the third in the third segment of the second planar coil winding 2
  • the outer portion 31, and thereafter, current can flow from the second outer portion 21 and the second inner portion 22 to the second planar coil winding 2, and finally flows out from the second planar coil winding 2.
  • the current flowing into the coil module from an external circuit or the current generated by the coil module itself can flow into the second planar coil winding 2 and pass through the third inner portion 32 in the third segment of the second planar coil winding 2
  • the first connection portion L1 flows to the first outer portion 11 in the first segment of the first planar coil winding 1 and at the same time passes from the third outer portion 31 in the third segment of the second planar coil winding 2 through the second connection portion L2 flows to the first inner portion 12 in the first segment of the first planar coil winding 1, and current can also flow from the second planar coil winding 2 to the second outer portion in the second segment of the first planar coil winding 1.
  • Part 21 and second inner part 22 flows from the second inner part 22 to the first outer part 21 through the first connection part L1, and simultaneously flows from the second outer part 21 to the first inner part through the second connection part L2 12, and finally flows out from the first planar coil winding 1.
  • the second inner side portion 22 and the third inner side portion 32 communicate with each other in layers, so that the first and second planes in the first planar coil winding 1 can be realized through the first connecting portion L1 and the second connecting portion L2.
  • a target wire composed of the first outer portion 11, the first connecting portion L2, and the third inner portion 32 and a target wire composed of the first inner portion 12, the second connecting portion L2, and the third outer portion 31 are in the first There is an intersection in the projections on the plane where the planar coil winding 1 (or the second planar coil winding 2) is located.
  • the first outer portion 11 and the first inner portion 12 and the gap between the third outer portion 31 and the third inner portion 32 the first outer portion 11 and the first The induced currents generated on the second inner portion 22 are opposite to the directions of the induced currents generated on the third outer portion 31 and the third inner portion 32, so that they can at least partially cancel each other, thereby effectively reducing the first planar coil winding 1 and the first
  • the circulating current loss in the two-plane coil winding 2 improves the wireless charging efficiency of the coil module.
  • the second outer portion 21 is connected in parallel with the third outer portion 31, and the second inner portion 22 is connected in parallel with the third inner portion 32.
  • the second planar coil winding 2 may further include a fourth segment.
  • the fourth segment includes the fourth outer portion 41 and the fourth inner portion 42.
  • the fourth outer portion 41 and the fourth inner portion 42 are provided along the first portion. In the gap extending in the winding direction of the four sections, the fourth outer portion 41 communicates with the third outer portion 31, and the fourth inner portion 42 communicates with the third inner portion 32.
  • the fourth outer portion 41 when the fourth outer portion 41 is in communication with the third outer portion 31, the fourth outer portion 41 may be in communication with the third outer portion 31 through one or more turns of the coil; the fourth inner portion 42 and the third When the inner portion 32 is in communication, the fourth inner portion 42 may be in communication with the third inner portion 32 through one or more turns of the coil, which is not limited in this embodiment of the present application.
  • the coil module may also include other structures, such as any one turn of the first planar coil winding 1 A parallel cross structure formed by the coil and any one of the turns of the second planar coil winding 2, a first lead and a second lead for connecting the first planar coil 1 and the second planar coil 2 to an external circuit, etc.
  • other structures such as any one turn of the first planar coil winding 1 A parallel cross structure formed by the coil and any one of the turns of the second planar coil winding 2, a first lead and a second lead for connecting the first planar coil 1 and the second planar coil 2 to an external circuit, etc.
  • the coil module includes a first connection portion L1 and a second connection portion L2, and a first planar coil winding 1 and a second planar coil winding 2 which are insulated from each other.
  • the first planar coil winding 1 includes a first segment and a second segment, and there is an opening between the first segment and the second segment.
  • the first segment includes the first outer portion 11 and The first inner portion 12
  • the second section includes a second outer portion 21 and a second inner portion 22,
  • the first connecting portion L1 is located between the first outer portion 11 and the second inner portion 22, and the first outer portion 11 and the second
  • the inner portion 22 is electrically connected by the first connection portion L1.
  • the second planar coil winding 2 includes a third section, and along the thickness direction of the first planar coil winding 1, the end of the third section near the first section and the end of the second section near the first section at least partially overlap; the third section It includes a third outer portion 31 and a third inner portion 32.
  • the second connecting portion L2 is located between the third outer portion 31 and the first inner portion 12.
  • the third outer portion 31 and the first inner portion 12 pass through the second connecting portion L2. Continuity is achieved, and an end of the third outer portion 31 near the first inner portion 12 is connected to an end of the second outer portion 21 near the first inner portion 12.
  • a target wire composed of the first outer portion 11, the first connection portion L2, and the second inner portion 22 and a target wire composed of the first inner portion 12, the second connection portion L2, and the second outer portion 21 are in the first There is an intersection in the projections on the plane where the planar coil winding 1 (or the second planar coil winding 2) is located.
  • the first outer portion 11 and the first inner portion 12 and the gap between the second outer portion 21 and the second inner portion 22 the first outer portion 11 and the first
  • the direction of the induced current generated on the second inner portion 22 is opposite to the direction of the induced current generated on the second outer portion 21 and the second inner portion 22, so they can at least partially cancel each other, which can effectively reduce the first planar coil winding 1 and the first
  • the circulating current loss in the two-plane coil winding 2 improves the wireless charging efficiency of the coil module.
  • FIG. 29 is a schematic structural diagram of a wireless charging transmitting device according to an embodiment of the present application.
  • the wireless charging transmitting device includes: a DC / AC conversion circuit 292, a control unit 293, and the coil module 294 shown in any one of FIG. 3 to FIG. 28 above;
  • the input end of the DC / AC conversion circuit 292 is connected to a DC power source 291; the DC / AC conversion circuit 292 converts the DC signal input from the DC power source 291 into an AC signal under the control of the control unit 293, and transmits the AC signal to the coil module 294, so that the coil module 294 transmits the AC signal.
  • the output terminal of the DC / AC conversion circuit 292 is connected to the coil module 294, and the control terminal of the control unit 293 is connected to the controlled end of the DC / AC conversion circuit 292.
  • the wireless charging transmitting device can wirelessly charge the wireless charging receiving device.
  • the wireless charging transmitting device can be a wireless charger.
  • the control unit 293 can control the switch of the DC / AC conversion circuit 292 to be turned on when the wireless charging transmitting device needs to perform wireless charging for the wireless charging receiving device, so that the DC / AC conversion circuit 292 starts to work, and the DC power source 291 is turned on.
  • the input DC signal is converted into an AC signal.
  • the first voltage detection terminal of the control unit 293 is connected to the DC power source 291
  • the second voltage detection terminal of the control unit 293 is connected to the coil module 294
  • the first current detection terminal of the control unit 293 is connected to the DC power source 291 is connected
  • the second current detection terminal of the control unit 293 is connected to the coil module 294.
  • control unit 293 can detect the voltage and current of the DC power supply 291 and the voltage and current of the coil module 294, and then control the DC / AC conversion circuit 292 according to the detected voltage and current.
  • the wireless charging transmitting device further includes: a matching circuit 295; the matching circuit 295 is connected between the DC / AC conversion circuit 292 and the coil module 294, and is used to resonate with the coil module 294, so that the DC The AC signal output from the AC / AC conversion circuit 292 can be efficiently transmitted to the coil module 294.
  • control terminal of the control unit 293 is connected to the controlled terminal of the matching circuit 295.
  • control unit 293 can control the switch of the matching circuit 295 to be turned on when the wireless charging transmitting device needs to wirelessly charge the wireless charging receiving device, so that the matching circuit 295 starts to work and resonates with the coil module 294.
  • the wireless charging transmitting device includes a coil module 294.
  • the first planar coil winding and the second planar coil winding included in the coil module 294 have less circulating current losses, so the wireless charging transmitting device can be improved. Wireless charging efficiency.
  • FIG. 33 is a schematic structural diagram of a wireless charging receiving device according to an embodiment of the present application.
  • the wireless charging receiving device includes: an AC / DC conversion circuit 331, a control unit 332, a load 333, and the coil module 334 shown in any one of FIG. 3 to FIG. 21 above;
  • the coil module 334 is connected to the input end of the AC / DC conversion circuit 331; the coil module 334 receives the AC signal and transmits the AC signal to the AC / DC conversion circuit 331; the AC / DC conversion circuit 331 is controlled by the control unit 332 The AC signal is converted into a DC signal, and the DC signal is output to the load 333 to power the load 333.
  • the output terminal of the AC / DC conversion circuit 331 is connected to the load 333, and the control terminal of the control unit 332 is connected to the controlled end of the AC / DC conversion circuit 331.
  • the wireless charging receiving device may use a wireless charging transmitting device to wirelessly charge itself.
  • the wireless charging receiving device may be an electronic device such as a mobile phone or a tablet computer.
  • control unit 332 can control the switch of the AC / DC conversion circuit 331 to be turned on when the wireless charging receiving device needs to use the wireless charging transmitting device to wirelessly charge itself, so that the AC / DC conversion circuit 331 starts to work, and the coil
  • the AC signal input by the module 334 is converted into a DC signal, and the DC signal is output to the load 333.
  • the first voltage detection terminal of the control unit 332 is connected to the coil module 334
  • the second voltage detection terminal of the control unit 332 is connected to the load 333
  • the first current detection terminal of the control unit 332 is connected to the coil module 334 is connected
  • the second current detection terminal of the control unit 332 is connected to the load 333.
  • control unit 332 can detect the voltage and current of the coil module 334 and the voltage and current of the load 333, and then control the AC / DC conversion circuit 331 according to the detected voltage and current.
  • the wireless charging receiving device further includes: a matching circuit 335; the matching circuit 335 is connected between the coil module 334 and the AC / DC conversion circuit 331, and is configured to resonate with the coil module 334 so that the coil The AC signal output by the module 334 can be efficiently transmitted to the AC / DC conversion circuit 331.
  • control terminal of the control unit 332 is connected to the controlled terminal of the matching circuit 335.
  • control unit 332 can control the switch of the matching circuit 335 to be turned on when the wireless charging receiving device needs to wirelessly charge itself using the wireless charging transmitting device, so that the matching circuit 335 starts to work and resonates with the coil module 334.
  • the wireless charging receiving device includes a coil module 334.
  • the first planar coil winding and the second planar coil winding included in the coil module 334 have less circulating current losses, so the wireless charging receiving device can be improved. Wireless charging efficiency.
  • FIG. 37 is a schematic structural diagram of a wireless charging system according to an embodiment of the present application.
  • the wireless charging system includes the wireless charging transmitting device 371 shown in any one of FIG. 29 to FIG. 32 described above, and includes the wireless charging receiving device 372 shown in any one of FIG. 33 to FIG. 36 described above. To wirelessly charge the wireless charging receiving device.
  • the AC signal emitted by the coil module in the wireless charging transmitting device generates a magnetic field.
  • the magnetic coupling can cause the coil module in the wireless charging receiving device to generate a voltage, and then the wireless charging transmitting device can be completed as a wireless charging receiving device. Wireless charging of loads.
  • the wireless charging system includes a wireless charging transmitting device and a wireless charging receiving device, and both the wireless charging transmitting device and the wireless charging receiving device include a coil module, and the coil module includes a first planar coil winding and a first The circulating current loss in the two-plane coil winding is less, so the wireless charging efficiency of the wireless charging system can be improved.
  • FIG. 38 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • the terminal includes a working load circuit 381, an AC / DC conversion circuit 382, a charging control unit 383, and the coil module 384 shown in any one of the foregoing FIGS. 3 to 24;
  • the coil module 384 is connected to the input terminal of the AC / DC conversion circuit 382; the coil module 384 receives the AC signal and transmits the AC signal to the AC / DC conversion circuit 382; the AC / DC conversion circuit 382 is connected to the charging control unit 383; The AC signal is converted into a DC signal under control, and the DC signal is output to the work load circuit 381.
  • the output terminal of the AC / DC conversion circuit 382 is connected to the work load circuit 381, and the control terminal of the charging control unit 383 is connected to the controlled terminal of the AC / DC conversion circuit 382.
  • the terminal may be an electronic device such as a mobile phone or a tablet computer.
  • the charging control unit 383 can control the switch of the AC / DC conversion circuit 382 to be turned on when the terminal needs to wirelessly charge itself with a wireless charger, so that the AC / DC conversion circuit 382 starts to work, and the coil module 384 is turned on.
  • the input AC signal is converted into a DC signal, and the DC signal is output to the work load circuit 381.
  • the first voltage detection terminal of the charging control unit 383 is connected to the coil module 384
  • the second voltage detection terminal of the charging control unit 383 is connected to the workload circuit 381
  • the first current detection of the charging control unit 383 The terminal is connected to the coil module 384
  • the second current detection terminal of the charging control unit 383 is connected to the workload circuit 381.
  • the charging control unit 383 can detect the voltage and current of the coil module 384 and the voltage and current of the workload circuit 381, and then control the AC / DC conversion circuit 382 according to the detected voltage and current.
  • the terminal further includes: a matching circuit 385; the matching circuit 385 is connected between the coil module 384 and the AC / DC conversion circuit 382 for resonating with the coil module 384, so that the coil module 384 The output AC signal can be transmitted to the AC / DC conversion circuit 382 with high efficiency.
  • control terminal of the charging control unit 383 is connected to the controlled terminal of the matching circuit 385.
  • the charging control unit 383 can control the switch of the matching circuit 385 to be turned on when the terminal needs to wirelessly charge itself with a wireless charger, so that the matching circuit 385 starts to work and resonates with the coil module 384.
  • the terminal includes a coil module 384, and the circulating current loss in the first and second planar coil windings included in the coil module 384 is small, so that the wireless charging efficiency of the terminal can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

本申请公开了一种线圈模组、无线充电发射装置、接收装置、系统和终端。所述模组包括:第一平面线圈绕组和第二平面线圈绕组;第一平面线圈绕组的第一匝线圈包括第一外侧部和第一内侧部,且第一平面线圈绕组的第一匝线圈的端部包括第一外侧部的端部和第一内侧部的端部;第二平面线圈绕组的第一匝线圈包括第二外侧部和第二内侧部,且第二平面线圈绕组的第一匝线圈的端部包括第二外侧部的端部和第二内侧部的端部;第一外侧部的端部与第二内侧部的端部实现导通,第二外侧部的端部与第一内侧部的端部实现导通。本申请可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高线圈模组的无线充电效率。

Description

线圈模组、无线充电发射装置、接收装置、系统和终端
本申请要求于2018年08月04日提交的申请号为201810881202.X、发明名称为“线圈模组、无线充电发射装置、接收装置、系统和终端”的中国专利申请的优先权,以及要求于2019年02月12日提交的申请号为201910111453.4、发明名称为“线圈模组、无线充电发射装置、接收装置、系统和终端”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线充电技术领域,特别涉及一种线圈模组、无线充电发射装置、接收装置、系统和终端。
背景技术
目前,采用无线充电技术对电子设备进行充电越来越普及。实现无线充电技术的设备称为无线充电器。在具体实现时,无线充电器中设置有发射线圈,电子设备中设置有接收线圈,无线充电器中的发射线圈所携带的交流电产生磁场,通过磁耦合使得电子设备中的接收线圈产生电压,从而实现对电子设备的充电。
由于无线充电是基于发射线圈与接收线圈之间的磁耦合进行能量传输,所以发射线圈与接收线圈之间存在很强的磁场。这种情况下,如果无线充电线圈(即发射线圈或接收线圈)的线圈绕组的宽度较宽,则当磁场穿过线圈绕组时,会在线圈绕组中产生较大的涡流损耗。为了解决此问题,如图1所示,通常无线充电线圈会包括线圈绕组和切割口,切割口将线圈绕组分割成两个宽度较小的小绕组,由于各个小绕组的宽度均小于分割前的线圈绕组的宽度,所以可以降低线圈绕组的涡流损耗。
然而,切割口将线圈绕组分割成两个宽度较小的小绕组后,如图2所示,当线圈绕组中流过电流I时,两个小绕组中分别流过方向相同的电流I 1和电流I 2,此时如果磁场穿过切割口,则会因电磁感应而在切割口两侧的两个小绕组中分别产生方向不同的感应电流I E,从而会导致线圈绕组中产生环流损耗,进而会降低无线充电效率。
发明内容
本申请提供了一种线圈模组、无线充电发射装置、接收装置、系统和终端,可以解决相关技术中无线充电效率较低的问题。所述技术方案如下:
第一方面,提供了一种线圈模组,所述模组包括:相互绝缘的第一平面线圈绕组和第二平面线圈绕组,所述第一平面线圈绕组和所述第二平面线圈绕组均包括多匝线圈。
所述第一平面线圈绕组的第一匝线圈包括第一外侧部和第一内侧部,且所述第一平面线圈绕组的第一匝线圈的端部包括所述第一外侧部的端部和所述第一内侧部的端部,所述第一外侧部和所述第一内侧部之间具有沿所述第一平面线圈绕组的第一匝线圈的盘绕方向延伸的 间隙。所述第二平面线圈绕组的第一匝线圈包括第二外侧部和第二内侧部,且所述第二平面线圈绕组的第一匝线圈的端部包括所述第二外侧部的端部和所述第二内侧部的端部,所述第二外侧部和所述第二内侧部之间具有沿所述第二平面线圈绕组的第一匝线圈的盘绕方向延伸的间隙。所述第一外侧部的端部与所述第二内侧部的端部实现导通,所述第二外侧部的端部与所述第一内侧部的端部实现导通。
其中,所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最内匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最内匝线圈;或者,所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最外匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最外匝线圈。
需要说明的是,第一平面线圈绕组(或第二平面线圈绕组)是由导体绕制而成的导电图形,该导电图形可以为圆环形、椭圆环形等,第一平面线圈绕组(或第二平面线圈绕组)包括的多匝线圈中的任意一匝线圈是导体以360度均匀绕制而成。
另外,第一平面线圈绕组与第二平面线圈绕组的相互绝缘可以通过绝缘介质实现,第一平面线圈绕组与第二平面线圈绕组之间的绝缘介质用于隔离第一平面线圈绕组和第二平面线圈绕组,使两者之间除彼此连接部分之外的其它部分保持绝缘。
在本申请实施例中,第一平面线圈绕组的第一匝线圈与第二平面线圈绕组的第一匝线圈之间形成串联交叉结构。第一平面线圈绕组的第一匝线圈的端部与第二平面线圈绕组的第一匝线圈的端部实现导通,具体是第一外部侧的端部与第二内侧部的端部实现导通,第一内侧部的端部与第一外侧部的端部实现导通,从而使得第一外侧部和第二内侧部组成的一个目标导线与第一内侧部和第二外侧部组成的一个目标导线在第一平面线圈绕组(或第二平面线圈绕组)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部与第一内侧部之间的间隙以及穿过第二外侧部与第二内侧部之间的间隙时,第一外侧部和第二内侧部上产生的感应电流与第一内侧部和第二外侧部上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高该线圈模组的无线充电效率。
结合第一方面,在第一种可能的实现方式中,所述第一外侧部的端部与所述第二内侧部的端部之间通过至少一个第一过孔实现导通。具体地,该至少一个第一过孔贯穿第一外侧部的端部与第二内侧部的端部,第一外侧部的端部与第二内侧部的端部通过该至少一个第一过孔实现电气连接。
结合第一方面或第一方面的第一种可能的实现方式,在第二种可能的实现方式中,所述第二外侧部的端部与所述第一内侧部的端部之间通过至少一个第二过孔实现导通。具体地,该至少一个第二过孔贯穿第二外侧部的端部与第一内侧部的端部,第二外侧部的端部与第一内侧部的端部通过该至少一个第二过孔实现电气连接。
在本申请实施例中,在第一平面线圈绕组与第二平面线圈绕组之间设置有绝缘层的情况下,可以通过至少一个第一过孔简单快速地实现第一外侧部的端部与第二内侧部的端部的导通,以及,可以通过至少一个第二过孔简单快速地实现第二外侧部的端部与第一内侧部的端部的导通。
结合第一方面或第一方面的第二种可能的实现方式,在第三种可能的实现方式中,所述模组还包括第一连接部,所述第一连接部位于所述第一外侧部与所述第二内侧部之间,所述 第一外侧部的端部与所述第二内侧部的端部之间通过第一连接部实现导通。
结合第一方面、第一方面的第一种可能的实现方式或第一方面的第三种可能的实现方式,在第四种可能的实现方式中,所述模组还包括第二连接部,所述第二连接部位于所述第二外侧部与所述第一内侧部之间,所述第二外侧部的端部与所述第一内侧部的端部之间通过第二连接部实现导通。
需要说明的是,第一连接部与第二连接部之间无电气连接。第一连接部与该线圈模组中除第一外侧部的端部和第二内侧部的端部之外的其它部分没有电气连接。第二连接部与该线圈绕组中除第一内侧部的端部和第二外侧部的端部之外的其它部分没有电气连接。
另外,第一连接部可以是单个连接部,也可以是由多个连接部在长度方向上依次串联而成,该多个连接部可以通过过孔实现串联,也可以通过焊接实现串联。同样,第二连接部可以是单个连接部,也可以是由多个连接部在长度方向上依次串联而成,该多个连接部可以通过过孔实现串联,也可以通过焊接实现串联。
在本申请实施例中,可以通过第一连接部简单灵活实现第一外侧部的端部与第二内侧部的端部的导通,且可以通过至少一个第二过孔简单快速地实现第二外侧部的端部与第一内侧部的端部的导通。
结合第一方面或第一方面的第一至第四种可能的实施方式中的任一种实现方式,在第五种可能的实现方式中,所述模组还包括第三连接部和第四连接部。
所述第一平面线圈绕组中除所述第一外侧部和所述第一内侧部之外的其它部分包括第一段和第二段,所述第一段和所述第二段之间具有开口,所述第一段包括第三外侧部和第三内侧部,所述第三外侧部和所述第三内侧部之间具有沿所述第一段的盘绕方向延伸的间隙,所述第二段包括第四外侧部和第四内侧部,所述第四外侧部和所述第四内侧部之间具有沿所述第二段的盘绕方向延伸的间隙。所述第二平面线圈绕组中除所述第二外侧部和所述第二内侧部之外的其它部分包括第三段和第四段,所述第三段和所述第四段之间具有开口,所述第三段包括第五外侧部和第五内侧部,所述第五外侧部和所述第五内侧部之间具有沿所述第三段的盘绕方向延伸的间隙,所述第四段包括第六外侧部和第六内侧部,所述第六外侧部和所述第六内侧部之间具有沿所述第四段的盘绕方向延伸的间隙。
所述第三外侧部与所述第五外侧部并联,所述第三内侧部与所述第五内侧部并联,所述第四外侧部与所述第六外侧部并联,所述第四内侧部与所述第六内侧部并联;所述第三连接部位于所述第三外侧部与所述第四内侧部之间,且所述第三外侧部和所述第四内侧部通过所述第三连接部实现导通,所述第四连接部位于所述第五内侧部与所述第六外侧部之间,且所述第五内侧部和所述第六外侧部通过所述第四连接部实现导通。
需要说明的是,第一平面线圈绕组的第一匝线圈与第二平面线圈绕组的第一匝线圈是串联交叉结构,第一平面线圈绕组的第一段和第二段与第二平面线圈绕组的第三段和第四段是并联交叉结构。
另外,第三连接部和第四连接部之间无电气连接。第三连接部与该线圈模组中除第三外侧部、第五外侧部、第四内侧部和第六内侧部之外的其它部分无电气连接,第四连接部与该线圈模组中除位于第五内侧部、第三内侧部、第六外侧部的和第四外侧部之外的其它部分无电气连接。
在本申请实施例中,第三外侧部、第五外侧部、第三连接部、第四内侧部和第六内侧部 组成一个目标导线,第三内侧部、第五内侧部、第四连接部、第四外侧部和第六外侧部组成一个目标导线,这两个目标导线在第一平面线圈绕组(或第二平面线圈绕组)所在平面上的投影存在交叉。在此情况下,磁场穿过第三外侧部与第三内侧部之间的间隙、第五外侧部与第五内侧部之间的间隙、第四外侧部与第四内侧部之间的间隙以及第六外侧部与第六内侧部之间的间隙时,这两个目标导线上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高该线圈模组的无线充电效率。
结合第一方面的第五种可能的实现方式,在第六种可能的实现方式中,所述第一段和所述第二段位于所述第一平面线圈绕组的第N匝线圈,所述第三段和所述第四段位于所述第二平面线圈绕组的第M匝线圈,所述第N匝线圈为所述第一平面线圈绕组的最内匝线圈和所述第一平面线圈绕组的最外匝线圈之间的任一匝线圈,所述第M匝线圈为所述第二平面线圈绕组的最内匝线圈和所述第二平面线圈绕组的最外匝线圈之间的任一匝线圈。所述第N匝线圈的一端延伸至所述第一平面线圈绕组中位于所述第N匝线圈的内侧且与所述第N匝线圈相邻的第N-1匝线圈的一端,所述第N匝线圈的另一端延伸至所述第一平面线圈绕组中位于所述第N匝线圈的外侧且与所述第N匝线圈相邻的第N+1匝线圈的一端;所述第M匝线圈中除具有所述第三段和所述第四段之间的开口之外还具有其它开口,所述第二平面线圈绕组中位于所述第M匝线圈的内侧且与所述第M匝线圈相邻的第M-1匝线圈的一端穿过所述其它开口且延伸至所述第二平面线圈绕组中位于所述第M匝线圈的外侧的第K匝线圈的一端。
在本申请实施例中,第一平面线圈绕组与第二平面线圈绕组可以先进行该第N+1匝线圈与该第N匝线圈的串联,再进行该第N匝线圈与该第M匝线圈的并联,且进行该第N匝线圈、该第N-1匝线圈和第一平面线圈绕组的第一匝线圈的依次串联,然后进行第一平面线圈绕组的第一匝线圈与第二平面线圈绕组的第一匝线圈的串联,最后进行第二平面线圈绕组的第一匝线圈、该第M-1匝线圈与该第K匝线圈的依次串联。
结合第一方面或第一方面的第一种至第六种任意一种可能的实现方式,在第七种可能的实现方式中,在所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最内匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最内匝线圈的情况下,所述模组包括第一导线和第二导线。
所述第一导线的一端为所述模组的第一端,所述第一导线的另一端与第一目标线圈的端部连接。所述第二导线的一端为所述模组的第二端,所述第二导线的另一端与第二目标线圈的端部连接。所述模组的第一端和所述模组的第二端中其中一个为引入端,另一个为引出端。
需要说明的是,第一目标线圈为按照由最内匝线圈至最外匝线圈的顺序,第一平面线圈绕组的多匝线圈中最后一匝与第一平面线圈绕组的最内匝线圈的端部串联的线圈,即第一目标线圈为与第一平面线圈绕组的最内匝线圈的端部依次串联的至少一匝线圈中位于最外侧的一匝线圈。第二目标线圈为按照由最内匝线圈至最外匝线圈的顺序,第二平面线圈绕组的多匝线圈中最后一匝与第二平面线圈绕组的最内匝线圈的端部串联的线圈,即第二目标线圈为与第二平面线圈绕组的最内匝线圈的端部依次串联的至少一匝线圈中位于最外侧的一匝线圈。
在本申请实施例中,可以通过第一导线和第二导线将第一平面线圈绕组和第二平面线圈绕组与外部电路连接,从而外部电路可以通过第一导线和第二导线为第一平面线圈绕组和第二平面线圈绕组提供电能,或者,第一平面线圈绕组和第二平面线圈绕组可以通过第一导线 和第二导线向外部电路输出电能。
结合第一方面的第七种可能的实现方式,在第八种可能的实现方式中,沿所述第一导线的长度方向,所述第一导线包括相互分隔的第一子导线和第二子导线;沿所述第一目标线圈的盘绕方向,所述第一目标线圈包括相互分隔的第七外侧部和第七内侧部。所述第七外侧部的端部与所述第一子导线的端部连接,所述第七内侧部的端部与所述第二子导线的端部连接。
值得注意的是,该第七外侧部和该第一子导线连接后形成的线路以及该第七内侧部与该第二子导线连接后形成的线路之间可以存在交叉,也可以不存在交叉。可选的,该第一子导线位于该第二子导线的外侧,则第一子导线可以认为是该第七外侧部的延伸以及折弯部,类似地,该第二子导线可以认为是该第七内侧部的延伸以及折弯部,并且,该第一子导线和该第二子导线之间的缝隙与该第七外侧部和该第七内侧部之间的缝隙是一次切割而成的,这种情况下,就不会存在交叉。相反的,该第一子导线位于该第二子导线的内侧,这种情况下,该第七外侧部和该第一子导线连接后形成的线路与该第七内侧部与该第二子导线连接后形成的线路之间就会存在交叉。
结合第一方面的第七种或第八种可能的实现方式,在第九种可能的实现方式中,沿所述第二导线的长度方向,所述第二导线包括相互分隔的第三子导线和第四子导线;沿所述第二目标线圈的盘绕方向,所述第二目标线圈包括相互分隔的第八外侧部和第八内侧部。所述第八外侧部的端部与所述第三子导线的端部连接,所述第八内侧部的端部与所述第四子导线的端部连接。
关于该第八外侧部与该第三子导线连接后形成的线路与该第八内侧部与该第四子导线连接后形成的线路之间是否存在交叉,可以参见前述关于该第七外侧部和该第一子导线连接后形成的线路与该第七内侧部与该第二子导线连接后形成的线路之间是否存在交叉的相关描述,此处不再赘述。
可选的,该第三子导线是该第八外侧部的延伸部折弯后形成的。该第四子导线是该第八内侧部的延伸部折弯后形成的。或者说,该第二导线与该第二目标线圈是一体成型的,且是从该第二目标线圈延伸而来的。
在本申请实施例中,可以将第一导线和第二导线分隔成宽度较小的子导线,且可以将第一目标线圈和第二目标线圈分隔成宽度较小的外侧部和内侧部,从而可以降低该线圈绕组的涡流损耗。
结合第一方面或第一方面的第一种至第六种任意一种可能的实现方式,在第十种可能的实现方式中,在所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最外匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最外匝线圈的情况下,所述模组包括第一导线和第二导线。
所述第一导线的一端为所述模组的第一端,所述第一导线的另一端与第三目标线圈的端部连接。所述第二导线的一端为所述模组的第二端,所述第二导线的另一端与第四目标线圈的端部连接。所述模组的第一端和所述模组的第二端中其中一个为引入端,另一个为引出端。
需要说明的是,第三目标线圈为按照由最外匝线圈至最内匝线圈的顺序,第一平面线圈绕组的多匝线圈中最后一匝与第一平面线圈绕组的最外匝线圈的端部串联的线圈,即第三目标线圈为与第一平面线圈绕组的最外匝线圈的端部依次串联的至少一匝线圈中位于最内侧的一匝线圈。第四目标线圈为按照由最外匝线圈至最内匝线圈的顺序,第二平面线圈绕组的多 匝线圈中最后一匝与第二平面线圈绕组的最外匝线圈的端部串联的线圈,即第四目标线圈为与第二平面线圈绕组的最外匝线圈的端部依次串联的至少一匝线圈中位于最内侧的一匝线圈。
在本申请实施例中,可以通过第一导线和第二导线将第一平面线圈绕组和第二平面线圈绕组与外部电路连接,从而外部电路可以通过第一导线和第二导线为第一平面线圈绕组和第二平面线圈绕组提供电能,或者,第一平面线圈绕组和第二平面线圈绕组可以通过第一导线和第二导线向外部电路输出电能。
结合第一方面的第十种可能的实现方式,在第十一种可能的实现方式中,沿所述第一导线的长度方向,所述第一导线包括相互分隔的第一子导线和第二子导线;沿所述第三目标线圈的盘绕方向,所述第三目标线圈包括相互分隔的第七外侧部和第七内侧部。所述第七外侧部的端部与所述第一子导线的端部连接,所述第七内侧部的端部与所述第二子导线的端部连接。具体可以参见前述第八种可能的实现方式中的相关描述。
结合第一方面的第十种或第十一种可能的实现方式,在第十二种可能的实现方式中,沿所述第二导线的长度方向,所述第二导线包括相互分隔的第三子导线和第四子导线;沿所述第四目标线圈的盘绕方向,所述第四目标线圈包括相互分隔的第八外侧部和第八内侧部。所述第八外侧部的端部与所述第三子导线的端部连接,所述第八内侧部的端部与所述第四子导线的端部连接。具体可以参见前述第九种可能的实现方式中的相关描述。
在本申请实施例中,可以将第一导线和第二导线分隔成宽度较小的子导线,且可以将第一目标线圈和第二目标线圈分隔成宽度较小的外侧部和内侧部,从而可以降低该线圈绕组的涡流损耗。
第二方面,提供了一种线圈模组,所述模组包括:第一连接部、第二连接部、第一导线、第二导线以及相互绝缘的第一平面线圈绕组和第二平面线圈绕组,所述第一平面线圈绕组和所述第二平面线圈绕组均包括多匝线圈。
所述第一平面线圈绕组的最内匝线圈包括第一段和第二段,所述第一段和所述第二段之间具有开口,所述第一段包括第一外侧部和第一内侧部,所述第一外侧部和所述第一内侧部之间具有沿所述第一段的盘绕方向延伸的间隙,所述第二段包括第二外侧部和第二内侧部,所述第二外侧部和所述第二内侧部之间具有沿所述第二段的盘绕方向延伸的间隙,所述第二段的第一端为所述第一平面线圈绕组的最内匝线圈的端部,所述第二段的第二端与所述第二段的第一端相对且靠近所述第一段的第一端。所述第二平面线圈绕组的最内匝线圈包括第三段和第四段,所述第三段和所述第四段之间具有开口,所述第三段包括第三外侧部和第三内侧部,所述第三外侧部和所述第三内侧部之间具有沿所述第三段的盘绕方向延伸的间隙,所述第四段包括第四外侧部和第四内侧部,所述第四外侧部和所述第四内侧部之间具有沿所述第四段的盘绕方向延伸的间隙,所述第三段的第一端为所述第二平面线圈绕组的最内匝线圈的端部,所述第三端的第二端与所述第三段的第一端相对且靠近所述第四段的第一端。
所述第一外侧部与所述第三外侧部并联,所述第一内侧部与所述第三内侧部并联,所述第二外侧部与所述第四外侧部并联,所述第二内侧部与所述第四内侧部并联;所述第一连接部所述第一外侧部与所述第二内侧部之间,且所述第一外侧部与所述第二内侧部通过所述第一连接部实现导通,所述第二连接部位于所述第三内侧部与所述第四外侧部之间,所述第三内侧部与所述第四外侧部通过所述第二连接部实现导通。
所述第一导线的一端为所述模组的第一端,所述第一导线的另一端与所述第一段的第二端相连通,所述第二导线的一端为所述模组的第二端,所述第二导线的另一端与所述第四段的第二端相连通。所述模组的第一端和所述模组的第二端中其中一个为引入端,另一个为引出端。
需要说明的是,第一连接部与第二连接部之间无电气连接。第一连接部与该线圈模组中除第一外侧部和第二内侧部之外的其它部分没有电气连接。第二连接部与该线圈绕组中除第三内侧部和第四外侧部之外的其它部分没有电气连接。
可选的,所述第一外侧部与所述第二内侧部之间通过第一连接部导通。具体的,第一外侧部、第一连接部和第二内侧部可以是一体成型。
可选的,所述第三内部侧与所述第四外部侧之间通过第二连接部导通。具体的,第三内侧部、第二连接部与第四外侧部可以是一体成型。
另外,第一平面线圈绕组的多匝线圈的绕向与第二平面线圈绕组的多匝线圈的绕向相反,此时第一平面线圈绕组中的电流流向与第二平面线圈绕组中的电流流向相同。并且,电流流入第一导线后,是先流过第一平面线圈绕组,再流过第二平面线圈绕组,最后从第二导线流出;或者,电流流入第二导线后,是先流过第二平面线圈绕组,再流过第一平面线圈绕组,最后从第一导线流出。
在本申请实施例中,第一平面线圈绕组的最内匝线圈与第二平面线圈绕组的最内匝线圈之间形成并联交叉结构。也即是,第一外侧部、第三外侧部、第一连接部、第二内侧部和第四内侧部组成一个目标导线,第一内侧部、第三内侧部、第二连接部、第二外侧部和第四外侧部组成一个目标导线,这两个目标导线在第一平面线圈绕组(或第二平面线圈绕组)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部与第一内侧部之间的间隙、第三外侧部与第三内侧部之间的间隙、第二外侧部与第二内侧部之间的间隙以及第六外侧部与第四内侧部之间的间隙时,这两个目标导线上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高该线圈模组的无线充电效率。
结合第二方面,在第一种可能的实现方式中,所述模组还包括第三连接部和第四连接部。
所述第一平面线圈绕组的目标线圈包括第五段,所述第五段与所述第一段之间具有开口,所述第五段包括第五外侧部和第五内侧部,所述目标线圈为所述第一平面线圈绕组中位于所述第一平面线圈绕组的最内匝线圈的外侧且与所述第一平面线圈绕组的最内匝线圈相邻的一匝线圈,所述第五外侧部和所述第五内侧部之间具有沿所述目标线圈的盘绕方向延伸的间隙,所述第一导线的另一端通过所述目标线圈与所述第一段的第二端实现连通。
所述第三连接部位于所述第一外侧部与所述第五内侧部之间,所述第一外侧部与所述第五内侧部通过所述第三连接部实现导通,所述第四连接部位于所述第一内侧部与所述第五外侧部之间,所述第一内侧部与所述第五外侧部通过所述第四连接部实现导通。
需要说明的是,第三连接部与第四连接部之间无电气连接。第三连接部与该线圈模组中除第一外侧部、第三外侧部和第五内侧部之外的其它部分没有电气连接。第四连接部与该线圈绕组中除第一内侧部、第三内侧部和第五外侧部之外的其它部分没有电气连接。
在本申请实施例中,第一外侧部、第三连接部和第五内侧部组成的一个目标导线与第一内侧部、第四连接部和第五外侧部组成的一个目标导线在第一平面线圈绕组(或第二平面线 圈绕组)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部与第一内侧部之间的间隙以及穿过第五外侧部与第五内侧部之间的间隙时,第一外侧部和第二内侧部上产生的感应电流与第五外侧部与第五内侧部上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高该线圈模组的无线充电效率。
第三方面,提供了一种线圈模组,所述模组包括:第一连接部和第二连接部以及相互绝缘的第一平面线圈绕组和第二平面线圈绕组,所述第一平面线圈绕组和所述第二平面线圈绕组均包括多匝线圈。
沿所述第一平面线圈绕组的卷绕方向,所述第一平面线圈绕组包括第一段和第二段,且所述第一段和所述第二段之间具有开口,所述第一段包括第一外侧部和第一内侧部,所述第一外侧部和所述第一内侧部之间具有沿所述第一段的盘绕方向延伸的间隙,所述第二段包括第二外侧部和第二内侧部,所述第二外侧部和所述第二内侧部之间具有沿所述第二段的盘绕方向延伸的间隙,所述第一连接部位于所述第一外侧部与所述第二内侧部之间,所述第一外侧部和所述第二内侧部通过所述第一连接部实现导通。
所述第二平面线圈绕组包括第三段,沿所述第一平面线圈绕组的厚度方向,所述第三段靠近所述第一段的端部与所述第二段靠近所述第一段的端部至少部分重叠;所述第三段包括第三外侧部和第三内侧部,所述第三外侧部和所述第三内侧部之间具有沿所述第三段的盘绕方向延伸的间隙,所述第二连接部位于所述第三外侧部与所述第一内侧部之间,所述第三外侧部和所述第一内侧部通过所述第二连接部实现导通,所述第三外侧部的靠近所述第一内侧部的一端与所述第二外侧部的靠近所述第一内侧部的一端相连通。
需要说明的是,第一连接部与该线圈模组中除第一外侧部、第二内侧部和第三内侧部之外的其它部分没有电气连接。第二连接部与该线圈绕组中除第三外侧部、第二外侧部和第一内侧部之外的其它部分没有电气连接。
在本申请实施例中,通常将第一平面线圈绕组称为第一层线圈绕组,将第二平面线圈绕组称为第二层线圈绕组,则第三外侧部与第二外侧部跨层连通,如此即可通过第一连接部和第二连接部实现第一平面线圈绕组中第一段与第二段之间的串联交叉。此时第一外侧部、第一连接部和第二内侧部组成的一个目标导线与第一内侧部、第二连接部和第二外侧部组成的一个目标导线在第一平面线圈绕组(或第二平面线圈绕组)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部与第一内侧部之间的间隙以及穿过第二外侧部与第二内侧部之间的间隙时,第一外侧部和第二内侧部上产生的感应电流与第二外侧部与第二内侧部上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高该线圈模组的无线充电效率。
结合第三方面,在第一种可能的实现方式中,所述第一外侧部、所述第一连接部和所述第二内侧部是一体成型。
结合第三方面或第三方面的第一种可能的实现方式,在第二种可能的实现方式中,所述第二连接部包括分隔开的第一部分和第二部分,所述第一部分与所述第一内侧部是一体成型,所述第二部分与所述第三外侧部一体成型,所述第一部分和所述第二部分彼此靠近的端部相导通。
需要说明的是,第一部分和第二部分彼此靠近的端部即为第一部分远离第一内侧部的一端与第二部分远离第三外侧部的一端。第一部分和第二部分彼此靠近的端部相导通时,至少一个过孔可以贯穿第一部分和第二部分彼此靠近的端部,第一部分和第二部分彼此靠近的端部可以通过该至少一个过孔实现电气连接。
结合第三方面、第三方面的第一种可能的实现方式或第三方面的第二种可能的实现方式,在第三方面的第三种可能的实现方式中,至少一个第一过孔贯穿所述第二外侧部的靠近所述第一内侧部的一端和所述第三外侧部的靠近所述第一内侧部的一端,所述第二外侧部的靠近所述第一内侧部的一端和所述第三外侧部的靠近所述第一内侧部的一端通过所述至少一个第一过孔实现电气连通。
在本申请实施例中,可以通过至少一个第一过孔简单快速地将第二外侧部的靠近第一内侧部的一端和第三外侧部的靠近第一内侧部的一端进行连接。
结合第三方面或第三方面的第一种至第三种可能的实现方式中任一种实现方式,在第四种可能的实现方式中,所述第二内侧部的靠近所述第一外侧部的一端与所述第三内侧部的靠近所述第一外侧部的一端相连通。
在本申请实施例中,第二内侧部与第三内侧部跨层连通,如此即可通过第一连接部和第二连接部实现第一平面线圈绕组中第一段与第二平面线圈绕组中第三段之间的串联交叉。此时第一外侧部、第一连接部和第三内侧部组成的一个目标导线与第一内侧部、第二连接部和第三外侧部组成的一个目标导线在第一平面线圈绕组(或第二平面线圈绕组)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部与第一内侧部之间的间隙以及穿过第三外侧部与第三内侧部之间的间隙时,第一外侧部和第二内侧部上产生的感应电流与第三外侧部与第三内侧部上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高该线圈模组的无线充电效率。
结合第三方面的第四种可能的实现方式,在第五种可能的实现方式中,至少一个第二过孔贯穿所述第二内侧部的靠近所述第一外侧部的一端和所述第三内侧部的靠近所述第一外侧部的一端,所述第二内侧部的靠近所述第一外侧部的一端和所述第三内侧部的靠近所述第一外侧部的一端通过所述至少一个第二过孔实现电气连接。
在本申请实施例中,可以通过至少一个第二过孔简单快速地将第二内侧部的靠近第一外侧部的一端和第三内侧部的靠近第一外侧部的一端进行连接。
第四方面,提供了一种无线充电发射装置,所述装置包括:直流/交流转换电路、控制单元和上述第一方面至第三方面任一方面所述的线圈模组。
所述直流/交流转换电路的输入端连接直流电源;所述直流/交流转换电路在所述控制单元的控制下将所述直流电源输入的直流信号转换为交流信号,并将所述交流信号传输到所述线圈模组,以使所述线圈模组对所述交流信号进行发射。
在本申请实施例中,无线充电发射装置包括线圈模组,线圈模组中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该无线充电发射装置的无线充电效率。
进一步地,所述装置还包括匹配电路;所述匹配电路连接在所述直流/交流转换电路与所 述线圈模组之间,用于与所述线圈模组发生谐振。
在本申请实施例中,匹配电路可以使得直流/交流转换电路输出的交流信号高效率地传输到线圈模组中。
第五方面,提供了一种无线充电接收装置,所述装置包括:交流/直流转换电路、控制单元、负载和上述第一方面至第三方面任一方面所述的线圈模组。
所述线圈模组与所述交流/直流转换电路的输入端连接;所述线圈模组接收交流信号,并将所述交流信号传输到所述交流/直流转换电路;所述交流/直流转换电路在所述控制单元的控制下将所述交流信号转换为直流信号,并将所述直流信号输出给负载,以为所述负载供电。
在本申请实施例中,无线充电接收装置包括线圈模组334,线圈模组334中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该无线充电接收装置的无线充电效率。
进一步地,所述装置还包括匹配电路;所述匹配电路连接在所述线圈模组与所述交流/直流转换电路之间,用于与所述线圈模组发生谐振。
在本申请实施例中,匹配电路使得线圈模组输出的交流信号可以高效率地传输到交流/直流转换电路中。
第六方面,提供了一种无线充电系统,所述系统包括上述第四方面所述的无线充电发射装置,以及包括上述第五方面所述的无线充电接收装置,所述无线充电发射装置用于为所述无线充电接收装置进行无线充电。
在本申请实施例中,无线充电系统包括无线充电发射装置和无线充电接收装置,无线充电发射装置和无线充电接收装置均包括线圈模组,该线圈模组中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该无线充电系统的无线充电效率。
第七方面,提供了一种终端,所述终端包括交流/直流转换电路、充电控制单元、工作负载电路和上述第一方面至第三方面任一方面所述的线圈模组;
所述线圈模组与所述交流/直流转换电路的输入端连接;
所述线圈模组接收交流信号,并将所述交流信号传输到所述交流/直流转换电路;所述交流/直流转换电路在所述充电控制单元的控制下将所述交流信号转换为直流信号,并将所述直流信号输出给所述工作负载电路。
在本申请实施例中,终端包括线圈模组,线圈模组中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该终端的无线充电效率。
本申请提供的技术方案至少可以带来以下有益效果:
线圈模组包括相互绝缘的第一平面线圈绕组和第二平面线圈绕组,第一平面线圈绕组和第二平面线圈绕组均包括多匝线圈。第一平面线圈绕组的第一匝线圈包括第一外侧部和第一内侧部,且第一平面线圈绕组的第一匝线圈的端部包括第一外侧部的端部和第一内侧部的端部,第一外侧部和第一内侧部之间具有沿第一平面线圈绕组的第一匝线圈的盘绕方向延伸的间隙。第二平面线圈绕组的最第一线圈包括第二外侧部和第二内侧部,且第二平面线圈绕组 的第一匝线圈的端部包括第二外侧部的端部和第二内侧部的端部,第二外侧部和第二内侧部之间具有沿第二平面线圈绕组的第一匝线圈的盘绕方向延伸的间隙。第一外侧部的端部与第二内侧部的端部实现导通,第二外侧部的端部与第一内侧部的端部实现导通。如此,可以使得第一外侧部和第二内侧部组成的一个目标导线与第一内侧部和第二外侧部组成的一个目标导线在第一平面线圈绕组(或第二平面线圈绕组)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部与第一内侧部之间的间隙以及穿过第二外侧部与第二内侧部之间的间隙时,第一外侧部和第二内侧部上产生的感应电流与第一内侧部和第二外侧部上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组和第二平面线圈绕组中的环流损耗,提高该线圈模组的无线充电效率。
附图说明
图1是相关技术提供的一种无线充电线圈的结构示意图;
图2是相关技术提供的一种小绕组中的感应电流的示意图;
图3是本申请实施例提供的第一种线圈模组的结构示意图;
图4是本申请实施例提供的第二种线圈模组的结构示意图;
图5是本申请实施例提供的一种外侧部和内侧部交叉连接的示意图;
图6是本申请实施例提供的第三种线圈模组的结构示意图;
图7是本申请实施例提供的第四种线圈模组的结构示意图;
图8是本申请实施例提供的第五种线圈模组的结构示意图;
图9是本申请实施例提供的第六种线圈模组的结构示意图;
图10是本申请实施例提供的一种连接部的示意图;
图11是本申请实施例提供的另一种连接部的示意图;
图12是本申请实施例提供的又一种连接部的示意图;
图13是本申请实施例提供的一种线圈中的感应电流的示意图;
图14是本申请实施例提供的第一种外侧部和内侧部的交叉示意图;
图15是本申请实施例提供的第二种外侧部和内侧部的交叉示意图;
图16是本申请实施例提供的第三种外侧部和内侧部的交叉示意图;
图17是本申请实施例提供的第四种外侧部和内侧部的交叉示意图;
图18是本申请实施例提供的第五种外侧部和内侧部的交叉示意图;
图19是本申请实施例提供的第六种外侧部和内侧部的交叉示意图;
图20是本申请实施例提供的一种磁场的分布示意图;
图21是本申请实施例提供的第七种线圈模组的结构示意图;
图22是本申请实施例提供的另一种外侧部和内侧部交叉连接的示意图;
图23是本申请实施例提供的第八种线圈模组的结构示意图;
图24是本申请实施例提供的第九种线圈模组的结构示意图;
图25是本申请实施例提供的第十种线圈模组的结构示意图;
图26是本申请实施例提供的第十一种线圈模组的结构示意图;
图27是本申请实施例提供的第十二种线圈模组的结构示意图;
图28是本申请实施例提供的第十三种线圈模组的结构示意图;
图29是本申请实施例提供的第一种无线充电发射装置的结构示意图;
图30是本申请实施例提供的第二种无线充电发射装置的结构示意图;
图31是本申请实施例提供的第三种无线充电发射装置的结构示意图;
图32是本申请实施例提供的第四种无线充电发射装置的结构示意图;
图33是本申请实施例提供的第一种无线充电接收装置的结构示意图;
图34是本申请实施例提供的第二种无线充电接收装置的结构示意图;
图35是本申请实施例提供的第三种无线充电接收装置的结构示意图;
图36是本申请实施例提供的第四种无线充电接收装置的结构示意图;
图37是本申请实施例提供的一种无线充电系统的结构示意图;
图38是本申请实施例提供的第一种终端的结构示意图;
图39是本申请实施例提供的第二种终端的结构示意图;
图40是本申请实施例提供的第三种终端的结构示意图;
图41是本申请实施例提供的第四种终端的结构示意图。
附图标记:
1:第一平面线圈绕组,2:第二平面线圈绕组;
11:第一外侧部,12:第一内侧部,21:第二外侧部,22:第二内侧部,31:第三外侧部,32:第三内侧部,41:第四外侧部,42:第四内侧部,51:第五外侧部,52:第五内侧部,61:第六外侧部,62:第六内侧部,71:第七外侧部,72:第七内侧部,81:第八外侧部,82:第八内侧部;
L1:第一连接部,L2:第二连接部,L3:第三连接部,L4:第四连接部;
D1:第一导线,D2:第二导线,d1:第一子导线,d2:第二子导线,d3:第三子导线,d4:第四子导线;
291:直流电源,292:直流/交流转换电路,293:控制单元,294:线圈模组,295:匹配电路;
331:直流/交流转换电路,332:控制单元,333:负载,334:线圈模组,335:匹配电路;
371:无线充电发射装置,372:无线充电接收装置;
381:工作负载电路,382:交流/直流转换电路,383:充电控制单元,384:线圈模组,385:匹配电路。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请的实施方式作进一步地详细描述。
图3或图4是本申请实施例提供的一种线圈模组的结构示意图。参见图3或图4,该线圈模组包括:相互绝缘的第一平面线圈绕组1和第二平面线圈绕组2,第一平面线圈绕组1和第二平面线圈绕组2均包括多匝线圈。
第一平面线圈绕组1的第一匝线圈包括第一外侧部11和第一内侧部12,且第一平面线圈绕组1的第一匝线圈的端部包括第一外侧部11的端部和第一内侧部12的端部,第一外侧 部11和第一内侧部12之间具有沿第一平面线圈绕组1的第一匝线圈的盘绕方向延伸的间隙。
第二平面线圈绕组2的第一匝线圈包括第二外侧部21和第二内侧部22,且第二平面线圈绕组2的第一匝线圈的端部包括第二外侧部21的端部和第二内侧部22的端部,第二外侧部21和第二内侧部22之间具有沿第二平面线圈绕组2的第一匝线圈的盘绕方向延伸的间隙。
第一外侧部11的端部与第二内侧部22的端部实现导通,第二外侧部21的端部与第一内侧部12的端部实现导通。
可选的,参见图3,第一平面线圈绕组1的第一匝线圈为第一平面线圈绕组1的最内匝线圈,且第二平面线圈绕组2的第一匝线圈为第二平面线圈绕组2的最内匝线圈。
或者,可选的,参见图4,第一平面线圈绕组1的第一匝线圈为第一平面线圈绕组1的最外匝线圈,且第二平面线圈绕组2的第一匝线圈为第二平面线圈绕组2的最外匝线圈。
需要说明的是,第一平面线圈绕组1(或第二平面线圈绕组2)是由导体绕制而成的导电图形,该导电图形可以为圆环形、椭圆环形等,第一平面线圈绕组1(或第二平面线圈绕组2)包括的多匝线圈中的任意一匝线圈是导体以360度均匀绕制而成。第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈的宽度可以不同,例如,按照由最内匝线圈至最外匝线圈的顺序,第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈的宽度可以逐渐增大,或可以先增大后减小等。值得注意的是,所谓“第一平面线圈绕组1(或第二平面线圈绕组2)包括多匝线圈”中的多匝通常是远大于两匝的。
另外,第一平面线圈绕组1与第二平面线圈绕组2的相互绝缘可以通过绝缘介质实现,第一平面线圈绕组1与第二平面线圈绕组2之间的绝缘介质用于隔离第一平面线圈绕组1和第二平面线圈绕组2,使两者之间除彼此连接部分之外的其它部分保持绝缘。具体地,可以在第一平面线圈绕组1与第二平面线圈绕组2之间设置绝缘层,这种情况下,第一平面线圈绕组1可以设置在印制电路板(Printed Circuit Board,PCB)或柔性电路板(Flexible Printed Circuit,FPC)等电路板上,第二平面线圈绕组2也可以设置在PCB、FPC等电路板上。或者,可以是在第一平面线圈绕组1的多匝线圈的表面和第二平面线圈绕组2的多匝线圈的表面均包裹上绝缘物质,这种情况下,第一平面线圈绕组1的多匝线圈可以为扁平线或漆包线等,第二平面线圈绕组2的多匝线圈也可以为扁平线或漆包线等。当第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈为扁平线时,第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈可以是由模切工艺、蚀刻法或电镀加成法等形成;当第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈为漆包线时,第一平面线圈绕组1(或第二平面线圈绕组2)可以是由多根导线绕制而成,该多根导线中的每根导线可以是单股导线或多股绞线等,本申请实施例对此不作限定。
需要说明的是,第一外侧部11与第一内侧部12之间具有的沿第一平面线圈绕组1的第一匝线圈的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第一平面线圈绕组1的第一匝线圈进行切割、化学腐蚀等,来得到第一外侧部11和第一内侧部12,此时第一外侧部11与第一内侧部12之间具有间隙。或者,可以将多根导线并绕成第一平面线圈绕组1的第一匝线圈,此时第一外侧部11可以是一根导线,第一内侧部12可以是另一根导线,第一外侧部11与第一内侧部12之间具有间隙。
另外,第一外侧部11的端部和第一内侧部12的端部分离。第一外侧部11中远离第二内侧部22的端部的一端与第一内侧部12中远离第二外侧部21的端部的一端,可以通过第一平 面线圈绕组1的第一匝线圈中除第一外侧部11和第一内侧部12之外的其它部分实现导通,或者可以通过第一平面线圈绕组1中除第一匝线圈之外的其它匝线圈实现导通,或者可以通过第一平面线圈绕组1与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第二外侧部21与第二内侧部22之间具有的沿第二平面线圈绕组2的第一匝线圈的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第二平面线圈绕组2的第一匝线圈进行切割、化学腐蚀等,来得到第二外侧部21与第二内侧部22,此时第二外侧部21与第二内侧部22之间具有间隙。或者,可以将多根导线并绕成第二平面线圈绕组2的第一匝线圈,此时第二外侧部21可以是一根导线,第二内侧部22可以是另一根导线,第二外侧部21与第二内侧部22之间具有间隙。
另外,第二外侧部21的端部和第二内侧部22的端部分离。第二外侧部21中远离第一内侧部12的端部的一端与第二内侧部22中远离第一外侧部11的端部的一端,可以通过第二平面线圈绕组2的第一匝线圈中除第二外侧部21和第二内侧部22之外的其它部分实现导通,或者可以通过第二平面线圈绕组2中除第一匝线圈之外的其它匝线圈实现导通,或者可以通过第二平面线圈绕组2与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,从外部电路流入该线圈模组的电流或该线圈模组自身产生的电流,可以先流入第一平面线圈绕组1的第一匝线圈中的第一外侧部11和第一内侧部12,然后从第一外侧部11流至第二平面线圈绕组2的第一匝线圈中的第二内侧部22,并同时从第一内侧部12流至第二平面线圈绕组2的第一匝线圈中的第二外侧部21,最后从第二平面线圈绕组2中流出。
或者,从外部电路流入该线圈模组的电流或该线圈模组自身产生的电流,可以先流入第二平面线圈绕组2的第一匝线圈中的第二内侧部22和第二外侧部21,然后从第二内侧部22流至第一平面线圈绕组1的第一匝线圈中的第一外侧部11,并同时从第二外侧部21流至第一平面线圈绕组1的第一匝线圈中的第一内侧部12,最后从第一平面线圈绕组1中流出。
值得说明的是,第一平面线圈绕组1的第一匝线圈与第二平面线圈绕组2的第一匝线圈之间形成串联交叉结构。参见图5,第一平面线圈绕组1的第一匝线圈的端部与第二平面线圈绕组2的第一匝线圈的端部实现导通,具体是第一外部侧11的端部与第二内侧部22的端部实现导通,第一内侧部12的端部与第二外侧部21的端部实现导通,从而使得第一外侧部11和第二内侧部22组成的一个目标导线与第一内侧部12和第二外侧部21组成的一个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙以及穿过第二外侧部21与第二内侧部22之间的间隙时,第一外侧部11和第二内侧部22上产生的感应电流与第一内侧部12和第二外侧部21上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
一种可能的实现方式中,第一外侧部11的端部与第二内侧部22的端部之间可以通过至少一个第一过孔实现导通,第二外侧部21的端部与第一内侧部12的端部之间可以通过至少一个第二过孔实现导通。
需要说明的是,该至少一个第一过孔贯穿第一外侧部11的端部与第二内侧部22的端部,第一外侧部11的端部与第二内侧部22的端部通过该至少一个第一过孔实现电气连接。该至少一个第二过孔贯穿第二外侧部21的端部与第一内侧部12的端部,第二外侧部21的端部与第一内侧部12的端部通过该至少一个第二过孔实现电气连接。
另一种可能的实现方式中,如图6、图7、图8或图9所示,该线圈模组还可以包括第一连接部L1,第一连接部L1位于第一外侧部11与第二内侧部22之间,第一外侧部11的端部与第二内侧部22的端部之间可以通过第一连接部L1实现导通;该线圈模组还可以包括第二连接部L2,第二连接部L2位于第二外侧部21与第一内侧部12之间,第二外侧部21的端部与第一内侧部12的端部之间可以通过第二连接部L2实现导通。
需要说明的是,第一连接部L1与第一外侧部11的端部之间可以通过一体成型、焊接、过孔连接等方式实现导通,该焊接可以使用脉冲加热回流焊接(hot bar)工艺或激光焊接工艺等。同样,第一连接部L1与第二内侧部22的端部之间可以通过一体成型、焊接、过孔连接等方式实现导通,第二连接部L2与第二外侧部21的端部之间可以通过一体成型、焊接、过孔连接等方式实现导通,第二连接部L2与第一内侧部12的端部之间可以通过一体成型、焊接、过孔连接等方式实现导通。
另外,第一连接部L1可以是单个连接部,也可以是由多个连接部在长度方向上依次串联而成,该多个连接部可以通过过孔实现串联,也可以通过焊接实现串联。同样,第二连接部L2可以是单个连接部,也可以是由多个连接部在长度方向上依次串联而成,该多个连接部可以通过过孔实现串联,也可以通过焊接实现串联。
再者,第一连接部L1与第二连接部L2之间无电气连接。第一连接部L1与该线圈模组中除第一外侧部11的端部和第二内侧部22的端部之外的其它部分没有电气连接。第二连接部L2与该线圈绕组中除第一内侧部12的端部和第二外侧部21的端部之外的其它部分没有电气连接。
这种情况下,为了保证第一连接部L1与第二连接部L2之间无电气连接,如图10所示,当第一连接部L1和第二连接部L2在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在重合部时,第一连接部L1与第二连接部L2之间需要具有绝缘介质,以隔离第一连接部L1与第二连接部L2。具体的,第一连接部L1与第二连接部L2之间可以设置有绝缘层,或可以在第一连接部L1的表面和第二连接部L2的表面包裹上绝缘物质。如图11或图12所示,当第一连接部L1和第二连接部L2在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影不存在重合部时,第一连接部L1需要与第二连接部L2相互分隔,即第一连接部L1与第二连接部L2之间需要具有间隙。
并且,为了保证第一连接部L1与该线圈模组中除第一外侧部11的端部和第二内侧部22的端部之外的其它部分没有电气连接,可以在第一连接部L1的表面包裹上绝缘物质,或者可以将第一连接部L1与该线圈模组中除第一外侧部11的端部和第二内侧部22的端部之外的其它部分相互分隔。
同样,为了保证第二连接部L2与该线圈绕组中除第一内侧部12和第二外侧部21的端部之外的其它部分没有电气连接,可以在第二连接部L2的表面上包裹上绝缘物质,或者可以将第二连接部L2与该线圈模组中除第一内侧部12的端部和第二外侧部21的端部之外的其它部分相互分隔。
值得注意的是,当第一平面线圈绕组1与第二平面线圈绕组2之间设置有绝缘层时,第一平面线圈绕组1可以位于绝缘层的一侧,第二平面线圈绕组2可以位于绝缘层的另一侧。这种结构下,第一连接部L1和第二连接部L2可以分别位于绝缘层的不同侧,也可以同时位于绝缘层的同一侧。并且,当第一连接部L1是由多个连接部在长度方向上依次串联而成时,该多个连接部可以分别位于绝缘层的不同侧,也可以同时位于绝缘层的同一侧;当第二连接部L2是由多个连接部在长度方向上依次串联而成时,该多个连接部可以分别位于绝缘层的不同侧,也可以同时位于绝缘层的同一侧。
例如,第一平面线圈绕组1和第一连接部L1均位于绝缘层的一侧,第二平面线圈绕组2和第二连接部L2均位于绝缘层的另一侧。又例如,第一平面线圈绕组1和第二连接部L2可以均位于绝缘层的一侧,第二平面线圈绕组2和第一连接部L1均位于绝缘层的另一侧。再例如,第一平面线圈绕组1位于绝缘层的一侧,第二平面线圈绕组2、第一连接部L1和第二连接部L2均位于绝缘层的另一侧,第一连接部L1和第二连接部L2相互分隔。还例如,第一平面线圈绕组1、第一连接部L1和第二连接部L2均位于绝缘层的一侧,第二平面线圈绕组2位于绝缘层的另一侧,第一连接部L1和第二连接部L2相互分隔。
值得注意的是,当第一平面线圈绕组1的多匝线圈的表面和第二平面线圈绕组2的多匝线圈的表面均包裹有绝缘物质时,第一连接部L1的表面和第二连接部L2的表面也可以均包裹有绝缘物质。
这种情况下,第一外侧部11的端部、第一连接部L1与第二内侧部22的端部可以是一体成型,此时第一外侧部11、第一连接部L1和第二内侧部22可以属于同一根导线。并且,第一内侧部12的端部、第二连接部L2与第二外侧部21的端部可以是一体成型,此时第一内侧部12、第二连接部L2和第二外侧部21可以属于同一根导线。
在上述结构的基础上,还可以通过如下三种细化结构来获得无线充电效率的更大提升。下面分别对这三种细化结构进行说明。
第一种细化结构:第一外侧部11与第一内侧部12之间的间隙在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影的面积与第二外侧部21与第二内侧部22之间的间隙在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影的面积相等或相近。
也即是,磁场穿过第一外侧部11与第一内侧部12之间的间隙时产生的感应电流与磁场穿过第二外侧部21与第二内侧部22之间的间隙时产生的感应电流相等或相近。
需要说明的是,第一外侧部11与第一内侧部12之间的间隙在第一平面线圈绕组1所在平面上的投影的面积与第二外侧部21与第二内侧部22之间的间隙在第一平面线圈绕组1所在平面上的投影的面积相近是指这两个面积之间的差值小于或等于第一预设数值。其中,第一预设数值可以预先进行设置,且第一预设数值可以设置的较小,如第一预设数值可以为这两个面积中任意一个面积的30%,当然,也可以为其它数值,本申请实施例对此不作限定。
另外,磁场穿过第一外侧部11与第一内侧部12之间的间隙时产生的感应电流与磁场穿过第二外侧部21与第二内侧部22之间的间隙时产生的感应电流相近是指这两个感应电流之间的差值小于或等于第二预设数值。其中,第二预设数值可以预先进行设置,且第二预设数值可以设置的较小,如第二预设数值可以为这两个感应电流中的任意一个感应电流的30%,当然,也可以为其它数值,本申请实施例对此不作限定。
值得说明的是,图13为图3或图4中的A-A'处和B-B'处的剖面图,如图13所示,当磁 场穿过第一外侧部11与第一内侧部12之间的间隙时,会在第一外侧部11和第一内侧部12中产生大小几乎相等且方向相反的感应电流,且当磁场穿过第二外侧部21与第二内侧部22之间的间隙时,会在第二外侧部21和第二内侧部22中产生大小几乎相等且方向相反的感应电流。因而当第一外侧部11与第一内侧部12之间的间隙在第一平面线圈绕组1所在平面上的投影的面积与第二外侧部21与第二内侧部22之间的间隙在第一平面线圈绕组1所在平面上的投影的面积相等或相近时,磁场穿过第一外侧部11与第一内侧部12之间的间隙时产生的感应电流与磁场穿过第二外侧部21与第二内侧部22之间的间隙时产生的感应电流相等或相近,从而可以有效提高感应电流的抵消效果,进而可以有效提升无线充电效率。
第二种细化结构:参见图14,第一平面线圈绕组1的第一匝线圈可以包括多个部,该多个部中可以包括第一外侧部11、第一内侧部12和至少一个其它部,该多个部中的任意两个部之间相互分隔,第一平面线圈绕组1的第一匝线圈的端部包括第一外侧部11的端部、第一内侧部12的端部和该至少一个其它部的端部。第二平面线圈绕组2的第一匝线圈也可以包括多个部,该多个部可以包括第二外侧部21、第二内侧部22和至少一个其它部,该多个部中的任意两个部之间相互分隔,第二平面线圈绕组2的第一匝线圈的端部包括第二外侧部21的端部、第二内侧部22的端部和该至少一个其它部的端部。
第一平面线圈绕组1的第一匝线圈包括的多个部的数量和第二平面线圈绕组2的第一匝线圈包括的多个部的数量是相同的,且第一平面线圈绕组1的第一匝线圈包括的多个部和第二平面线圈绕组2的第一匝线圈包括的多个部是一对一的。在此情况下,该线圈绕组还可以包括多个连接部,且该多个连接部的数量和第一平面线圈绕组1的第一匝线圈包括的多个部的数量也是相同的,且该多个连接部和第一平面线圈绕组1的第一匝线圈包括的多个部是一对一的。第一平面线圈绕组1的第一匝线圈中的第一外侧部11的端部、第一内侧部12的端部及至少一个其它部的端部可以一一通过该多个连接部与第二平面线圈绕组2的第一匝线圈中的第二内侧部22的端部、第二外侧部21的端部及至少一个其它部的端部实现导通,从而使得第一平面线圈绕组1的第一匝线圈与第二平面线圈绕组2的第一匝线圈之间形成串联交叉结构,即使得第一平面线圈绕组1的第一匝线圈中包括的多个部与第二平面线圈绕组2的第一匝线圈中包括的多个部之间组成的多个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。如此,不仅可以通过将线圈的宽度减小来降低涡流损耗,还可以通过串联交叉结构来降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,从而得以有效提升无线充电效率。
需要说明的是,该多个连接部之间无电气连接,且该多个连接部中的任意一个连接部与该线圈模组中除这个连接部所连接的第一平面线圈模组1的第一匝线圈中包括的一个部的端部和第二平面线圈模组2的第一匝线圈中包括的一个部的端部之外的其它部分没有电气连接。
例如,当第一平面线圈模组1的第一匝线圈中除第一外侧部11与第一内侧部12之外还包括一个部,且第二平面线圈模组2的第一匝线圈中除第二外侧部21与第二内侧部22之外还包括一个部时,第一平面线圈绕组1的第一匝线圈中的这三个部可以一一通过三个连接部与第二平面线圈绕组2的第一匝线圈中的这三个部实现导通,从而可以形成如图15或图16所示的串联交叉结构。
又例如,当第一平面线圈模组1的第一匝线圈中除第一外侧部11与第一内侧部12之外还包括两个部,且第二平面线圈模组2的第一匝线圈中除第二外侧部21与第二内侧部22之 外还包括两个部时,第一平面线圈绕组1的第一匝线圈中的这四个部可以通过四个连接部与第二平面线圈绕组2的第一匝线圈中的这四个部实现导通,从而可以形成如图17、图18或图19所示的串联交叉结构。
第三种细化结构:第一外侧部11的位置与第二外侧部21的位置相对,第一内侧部12的位置与第二内侧部22的位置相对。
也即是,第一外侧部11在第一平面线圈模组1(或第二平面线圈模组2)所在平面上的投影与第二外侧部21在第一平面线圈模组1(或第二平面线圈模组2)所在平面上的投影重合,第一内侧部12在第一平面线圈模组1(或第二平面线圈模组2)所在平面上的投影与第二内侧部22在第一平面线圈模组1(或第二平面线圈模组2)所在平面上的投影重合。
需要说明的是,由于第一外侧部11和第一内侧部12属于第一平面线圈绕组1的第一匝线圈,第二外侧部21和第二内侧部22属于第二平面线圈绕组2的第一匝线圈,所以可以较为容易地设置第一外侧部11的位置与第二外侧部21的位置相对,且设置第一内侧部12的位置与第二内侧部22的位置相对。
另外,如图20所示,实际应用中,发射线圈模组和接收线圈模组不一定完全对准,两者会发生一定程度上的偏移,从而导致发射线圈模组与接收线圈模组之间的磁场分布不均,即导致发射线圈模组或接收线圈模组的不同位置上的磁场分布不同。本申请实施例中设置第一外侧部11的位置与第二外侧部21的位置相对,且设置第一内侧部12的位置与第二内侧部22的位置相对后,可以使得在发射线圈模组和接收线圈模组没有完全对准的情况下,第一外侧部11和第一内侧部12所处的磁场与第二外侧部21和第二内侧部22所处的磁场较为相同,此时磁场穿过第一外侧部11与第一内侧部12之间的间隙时产生的感应电路与磁场穿过第二外侧部21与第二内侧部22之间的间隙时产生的感应电流的大小较为接近,从而可以有效提高感应电流的抵消效果,进而可以有效提升无线充电效率。
在上述结构的基础上,还可以实现第一平面线圈绕组1的线圈与第二平面线圈绕组2的线圈之间的并联交叉。下面对此并联交叉结构进行说明。
参见图21,该线圈模组还可以包括第三连接部L3和第四连接部L4。
第一平面线圈绕组1中除第一外侧部11和第一内侧部12之外的其它部分包括第一段和第二段,第一段和第二段之间具有开口,第一段包括第三外侧部31和第三内侧部32,第三外侧部31和第三内侧部32之间具有沿第一段的盘绕方向延伸的间隙,第二段包括第四外侧部41和第四内侧部42,第四外侧部41和第四内侧部42之间具有沿第二段的盘绕方向延伸的间隙。
第二平面线圈绕组2中除第二外侧部21和第二内侧部22之外的其它部分包括第三段和第四段,第三段和第四段之间具有开口,第三段包括第五外侧部51和第五内侧部52,第五外侧部51和第五内侧部52之间具有沿第三段的盘绕方向延伸的间隙,第四段包括第六外侧部61和第六内侧部62,第六外侧部61和第六内侧部62之间具有沿第四段的盘绕方向延伸的间隙。
第三外侧部31与第五外侧部51并联,第三内侧部32与第五内侧部52并联,第四外侧部41与第六外侧部61并联,第四内侧部42与第六内侧部62并联;第三连接部L3位于第三外侧部31与第四内侧部42之间,且第三外侧部31和第四内侧部42通过第三连接部L3实现导通,第四连接部L4位于第五内侧部52与第六外侧部61之间,且第五内侧部52和第六外 侧部61通过第四连接部L4实现导通。
这种情况下,第一平面线圈绕组1的第一匝线圈与第二平面线圈绕组2的第一匝线圈是串联交叉结构,第一平面线圈绕组1的第一段和第二段与第二平面线圈绕组2的第三段和第四段是并联交叉结构。
需要说明的是,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以先流入第一平面线圈绕组1的第一段中的第三外侧部31和第二平面线圈绕组2的第三段中的第五外侧部51,并同时流入第一平面线圈绕组1的第一段中的第三内侧部32和第二平面线圈绕组2的第三段中的第五内侧部52,然后从第三外侧部31和第五外侧部51通过第三连接部L3流至第一平面线圈绕组1的第二段中的第四内侧部42和第二平面线圈绕组2的第四段中的第六内侧部62,并同时从第三内侧部32和第五内侧部52通过第四连接部L4流至第一平面线圈绕组1的第二段中的第四外侧部41和第二平面线圈绕组2的第四段中的第六外侧部61,最后从第二平面线圈绕组2中流出。
或者,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以先流入第二平面线圈绕组2的第四段中的第六外侧部61和第一平面线圈绕组1的第二段中的第四外侧部41,并同时流入第二平面线圈绕组2的第四段中的第六内侧部62和第一平面线圈绕组1的第二段中的第四内侧部42,然后从第六外侧部61和第四外侧部41通过第四连接部L4流至第一平面线圈绕组1的第一段中的第三内侧部32和第二平面线圈绕组2的第三段中的第五内侧部52,并同时从第六内侧部62和第四内侧部42通过第三连接部L3流至第一平面线圈绕组1的第一段中的第三外侧部31和第二平面线圈绕组2的第三段中的第五外侧部51,最后从第一平面线圈绕组1中流出。
需要说明的是,第三外侧部31和第三内侧部32的结构、第四外侧部41和第四内侧部42的结构、第五外侧部51和第五内侧部52的结构以及第六外侧部61和第六内侧部62的结构均与上述第一外侧部11和第一内侧部12的结构类似,本申请实施例对此不再赘述。
另外,第三连接部L3位于第一段与第二端之间具有的开口内,第四连接部L4位于第三段与第四段之间具有的开口内。第三连接部L3与第三外侧部31之间可以通过一体成型、焊接、过孔连接等方式实现导通,第三连接部L3与第四内侧部42之间可以通过一体成型、焊接、过孔连接等方式实现导通,第四连接部L4与第五内侧部52之间可以通过一体成型、焊接、过孔连接等方式实现导通,第四连接部L4与第六外侧部61之间可以通过一体成型、焊接、过孔连接等方式实现导通。
再者,第三连接部L3和第四连接部L4之间无电气连接。第三连接部L3与该线圈模组中除第三外侧部31、第五外侧部51、第四内侧部42和第六内侧部62之外的其它部分无电气连接,第四连接部L4与该线圈模组中除位于第五内侧部52、第三内侧部32、第六外侧部61的和第四外侧部41之外的其它部分无电气连接。
其中,第三外侧部31与第五外侧部51并联时,第三外侧部31与第五外侧部51可以通过至少两个过孔实现并联。具体地,至少一个第三过孔贯穿第三外侧部31的第一端与第五外侧部51的第一端,第三外侧部31的第一端与第五外侧部51的第一端通过该至少一个第三过孔实现电气连接,至少一个第四过孔贯穿第三外侧部31的第二端与第五外侧部51的第二端,第三外侧部31的第二端与第五外侧部51的第二端通过该至少一个第四过孔实现电气连接,从而实现第三外侧部31与第五外侧部51的并联。第三内侧部32与第五内侧部52并联的方 式、第四外侧部41与第六外侧部61并联的方式以及第四内侧部42与第六内侧部62并联的方式均与第三外侧部31与第五外侧部51并联的方式类似,本申请实施例对此不再赘述。
值得说明的是,参见图22,第三外侧部31、第五外侧部51、第三连接部L3、第四内侧部42和第六内侧部62组成一个目标导线,第三内侧部32、第五内侧部52、第四连接部L4、第四外侧部41和第六外侧部61组成一个目标导线,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第三外侧部31与第三内侧部32之间的间隙、第五外侧部51与第五内侧部52之间的间隙、第四外侧部41与第四内侧部42之间的间隙以及第六外侧部61与第六内侧部62之间的间隙时,这两个目标导线上产生的感应电流I E的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
进一步地,参见图23,第一段和第二段位于第一平面线圈绕组1的第N匝线圈,第三段和第四段位于第二平面线圈绕组2的第M匝线圈,该第N匝线圈为第一平面线圈绕组1的最内匝线圈和第一平面线圈绕组1的最外匝线圈之间的任一匝线圈,该第M匝线圈为第二平面线圈绕组2的最内匝线圈和第二平面线圈绕组2的最外匝线圈之间的任一匝线圈;
该第N匝线圈的一端延伸至第一平面线圈绕组1中位于该第N匝线圈的内侧且与该第N匝线圈相邻的第N-1匝线圈的一端,该第N匝线圈的另一端延伸至第一平面线圈绕组1中位于该第N匝线圈的外侧且与该第N匝线圈相邻的第N+1匝线圈的一端;该第M匝线圈中除具有第三段和第四段之间的开口之外还具有其它开口,第二平面线圈绕组2中位于该第M匝线圈的内侧且与该第M匝线圈相邻的第M-1匝线圈的一端穿过该其它开口且延伸至第二平面线圈绕组2中位于该第M匝线圈的外侧的第K匝线圈的一端。
这种情况下,第一平面线圈绕组1与第二平面线圈绕组2是先进行该第N+1匝线圈与该第N匝线圈的串联,再进行该第N匝线圈与该第M匝线圈的并联,且进行该第N匝线圈、该第N-1匝线圈和第一平面线圈绕组1的第一匝线圈的依次串联,然后进行第一平面线圈绕组1的第一匝线圈与第二平面线圈绕组2的第一匝线圈的串联,最后进行第二平面线圈绕组2的第一匝线圈、该第M-1匝线圈与该第K匝线圈的依次串联。
需要说明的是,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第一平面线圈绕组1的第N+1匝线圈,再从该第N+1匝线圈流至第一平面线圈绕组1的第N匝线圈和第二平面线圈绕组2的第M匝线圈,然后从该第N匝线圈和该第M匝线圈流至第一平面线圈绕组1的第N-1匝线圈,接着从该第N-1匝线圈流至第一平面线圈绕组1的第一匝线圈,又从第一平面线圈绕组1的第一匝线圈流至第二平面线圈绕组2的第一匝线圈,之后,从第二平面线圈绕组2的第一匝线圈流至第二平面线圈绕组2的第M-1匝线圈,再从该第M-1匝线圈流至第二平面线圈绕组2的第K匝线圈,最后从第二平面线圈绕组2中流出。
或者,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第二平面线圈绕组2的第K匝线圈,再从该第K匝线圈流至第二平面线圈绕组2的第M-1匝线圈,然后从该第M-1匝线圈流入第二平面线圈绕组2的第一匝线圈,又从第二平面线圈绕组2的第一匝线圈流至第一平面线圈绕组1的第一匝线圈,之后,从第一平面线圈绕组1的第一匝线圈流至第一平面线圈绕组1的第N-1匝线圈,接着从该第N-1匝线圈流至第一平面 线圈绕组1的第N匝线圈和第二平面线圈绕组2的第M匝线圈,然后从该第N匝线圈和该第M匝线圈流至第一平面线圈绕组1的第N+1匝线圈,最后从第一平面线圈绕组1中流出。
上述结构下,该线圈模组中还可以包括与外部电路连接的引入端和引出端,外部电路可以通过该引入端和该引出端为第一平面线圈绕组1和第二平面线圈绕组2提供电能,或者,第一平面线圈绕组1和第二平面线圈绕组2可以通过该引入端和该引出端向外部电路输出电能。下面对该线圈模组的引入端和引出端的结构进行说明。
第一种可能的实现方式下,第一平面线圈绕组1的第一匝线圈为第一平面线圈绕组1的最内匝线圈,且第二平面线圈绕组2的第一匝线圈为第二平面线圈绕组2的最内匝线圈,此时参见图3、图6、图7、图21或图23,该线圈模组包括第一导线D1和第二导线D2,第一导线D1的一端为该线圈模组的第一端,第一导线D1的另一端与第一目标线圈的端部连接;第二导线D2的第一端为该线圈模组的第二端,第二导线D2的另一端与第二目标线圈的端部连接;该线圈模组的第一端和该线圈模组的第二端中其中一个为引出端,另一个为引出端。
需要说明的是,第一目标线圈为按照由最内匝线圈至最外匝线圈的顺序,第一平面线圈绕组1的多匝线圈中最后一匝与第一平面线圈绕组1的最内匝线圈的端部串联的线圈,即第一目标线圈为与第一平面线圈绕组1的最内匝线圈的端部依次串联的至少一匝线圈中位于最外侧的一匝线圈。第二目标线圈为按照由最内匝线圈至最外匝线圈的顺序,第二平面线圈绕组2的多匝线圈中最后一匝与第二平面线圈绕组2的最内匝线圈的端部串联的线圈,即第二目标线圈为与第二平面线圈绕组2的最内匝线圈的端部依次串联的至少一匝线圈中位于最外侧的一匝线圈。
例如,如图21所示,按照由最内匝线圈至最外匝线圈的顺序,第一平面线圈绕组1的多匝线圈中最后一匝与第一平面线圈绕组1的最内匝线圈的端部串联的线圈为第一平面线圈绕组1的最外匝线圈,则第一平面线圈绕组1的最外匝线圈为第一目标线圈。按照由最内匝线圈至最外匝线圈的顺序,第二平面线圈绕组2的多匝线圈中最后一匝与第二平面线圈绕组2的最内匝线圈的端部串联的线圈为第二平面线圈绕组2的第3匝线圈,则第二平面线圈绕组2的第3匝线圈为第二目标线圈。
其中,第一导线D1的另一端与第一目标线圈的端部连接时,可以直接将第一导线D1的另一端与第一目标线圈的端部重合;或者,如果第一目标线圈与第二平面线圈绕组2的一匝线圈并联,则可以将第一导线D1的另一端与第二平面线圈绕组2中与第一目标线圈并联的一匝线圈的端部重合。第二导线D2的另一端与第二目标线圈的端部连接的方式与第一导线D1的另一端与第一目标线圈的端部连接的方式类似,本申请实施例对此不再赘述。
进一步地,参见图7,沿第一导线D1的长度方向,第一导线D1包括相互分隔的第一子导线d1和第二子导线d2,沿第一目标线圈的盘绕方向,第一目标线圈包括相互分隔的第七外侧部71和第七内侧部72;第七外侧部71的端部与第一子导线d1的端部连接,第七内侧部72的端部与第二子导线d2的端部连接。
这种情况下,第七外侧部71的端部与第一子导线d1的端部连接后形成一个目标导线,第七内侧部的端部72与第二子导线d2的端部连接后形成一个目标导线。当第一子导线d1位于第二子导线d2的外侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影不存在交叉;当第一子导线d1位于第二子导线d2的内侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。
需要说明的是,第一子导线d1的端部与第二子导线d2的端部分离,第一子导线d1的远离第七外侧部71的端部的一端与第二子导线d2的远离第七内侧部72的端部的一端可以连接以形成该线圈模组的第一端,且可以通过端子连接形成该线圈模组的第一端。
进一步地,参见图7,沿第二导线D2的长度方向,第二导线D2包括相互分隔的第三子导线d3和第四子导线d4;沿第二目标线圈的盘绕方向,第二目标线圈包括相互分隔的第八外侧部81和第八内侧部82;第八外侧部81的端部与第三子导线d3的端部连接,第八内侧部82的端部与第四子导线d4的端部连接。
这种情况下,第八外侧部81的端部与第三子导线d3的端部连接后形成的一个目标导线,第八内侧部82的端部与第四子导线d4的端部连接后形成的一个导线。当第三子导线d3位于第四子导线d4的外侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影不存在交叉;当第三子导线d3位于第四子导线d4的内侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。
需要说明的是,第三子导线d3的端部和第四子导线d4的端部分离,第三子导线d3的远离第八外侧部81的端部的一端与第四子导线d4的远离第八内侧部82的端部的一端可以连接以形成该线圈模组的第二端,且可以通过端子连接形成该线圈模组的第二端。
第二种可能的实现方式下,第一平面线圈绕组1的第一匝线圈为第一平面线圈绕组1的最外匝线圈,且第二平面线圈绕组2的第一匝线圈为所述第二平面线圈绕组2的最外匝线圈,此时参见图4、图8或图9,该线圈模组包括第一导线D1和第二导线D2;第一导线D1的一端为该线圈模组的第一端,第一导线D1的另一端与第三目标线圈的端部连接;第二导线D2的一端为该线圈模组的第二端,第二导线D2的另一端与第四目标线圈的端部连接;该线圈模组的第一端和该线圈模组的第二端中其中一个为引入端,另一个为引出端。
需要说明的是,第三目标线圈为按照由最外匝线圈至最内匝线圈的顺序,第一平面线圈绕组1的多匝线圈中最后一匝与第一平面线圈绕组1的最外匝线圈的端部串联的线圈,即第三目标线圈为与第一平面线圈绕组1的最外匝线圈的端部依次串联的至少一匝线圈中位于最内侧的一匝线圈。第四目标线圈为按照由最外匝线圈至最内匝线圈的顺序,第二平面线圈绕组2的多匝线圈中最后一匝与第二平面线圈绕组2的最外匝线圈的端部串联的线圈,即第四目标线圈为与第二平面线圈绕组2的最外匝线圈的端部依次串联的至少一匝线圈中位于最内侧的一匝线圈。
其中,第一导线D1的另一端与第三目标线圈的端部连接时,可以直接将第一导线D1的另一端与第三目标线圈的端部重合;或者,如果第三目标线圈与第二平面线圈绕组2的一匝线圈并联,则可以将第一导线D1的另一端与第二平面线圈绕组2中与第三目标线圈并联的一匝线圈的端部重合。第二导线D2的另一端与第四目标线圈的端部连接的方式与第一导线D1的另一端与第三目标线圈的端部连接的方式类似,本申请实施例对此不再赘述。
进一步地,参见图9,沿第一导线D1的长度方向,第一导线D1包括相互分隔的第一子导线d1和第二子导线d2,沿第三目标线圈的盘绕方向,第三目标线圈包括相互分隔的第七外侧部71和第七内侧部72;第七外侧部71的端部与第一子导线d1的端部连接,第七内侧部72的端部与第二子导线d2的端部连接。
这种情况下,第七外侧部71的端部与第一子导线d1的端部连接后形成一个目标导线,第七内侧部的端部72与第二子导线d2的端部连接后形成一个目标导线。当第一子导线d1位 于第二子导线d2的外侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影不存在交叉;当第一子导线d1位于第二子导线d2的内侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。
需要说明的是,第一子导线d1的端部与第二子导线d2的端部分离,第一子导线d1的远离第七外侧部71的端部的一端与第二子导线d2的远离第七内侧部72的端部的一端可以连接以形成该线圈模组的第一端,且可以通过端子连接形成该线圈模组的第一端。
进一步地,参见图9,沿第二导线D2的长度方向,第二导线D2包括相互分隔的第三子导线d3和第四子导线d4;沿第四目标线圈的盘绕方向,第四目标线圈包括相互分隔的第八外侧部81和第八内侧部82;第八外侧部81的端部与第三子导线d3的端部连接,第八内侧部82的端部与第四子导线d4的端部连接。
这种情况下,第八外侧部81的端部与第三子导线d3的端部连接后形成的一个目标导线,第八内侧部82的端部与第四子导线d4的端部连接后形成的一个导线。当第三子导线d3位于第四子导线d4的外侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影不存在交叉;当第三子导线d3位于第四子导线d4的内侧时,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。
需要说明的是,第三子导线d3的端部和第四子导线d4的端部分离,第三子导线d3的远离第八外侧部81的端部的一端与第四子导线d4的远离第八内侧部82的端部的一端可以连接以形成该线圈模组的第二端,且可以通过端子连接形成该线圈模组的第二端。
在本申请实施例中,线圈模组包括相互绝缘的第一平面线圈绕组1和第二平面线圈绕组2,第一平面线圈绕组1和第二平面线圈绕组2均包括多匝线圈。第一平面线圈绕组1的第一匝线圈包括第一外侧部11和第一内侧部12,且第一平面线圈绕组1的第一匝线圈的端部包括第一外侧部11的端部和第一内侧部12的端部,第一外侧部11和第一内侧部12之间具有沿第一平面线圈绕组1的第一匝线圈的盘绕方向延伸的间隙。第二平面线圈绕组2的最第一线圈包括第二外侧部21和第二内侧部22,且第二平面线圈绕组2的第一匝线圈的端部包括第二外侧部21的端部和第二内侧部22的端部,第二外侧部21和第二内侧部22之间具有沿第二平面线圈绕组2的第一匝线圈的盘绕方向延伸的间隙。第一外侧部11的端部与第二内侧部22的端部实现导通,第二外侧部21的端部与第一内侧部12的端部实现导通。如此,可以使得第一外侧部11和第二内侧部22组成的一个目标导线与第一内侧部12和第二外侧部21组成的一个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙以及穿过第二外侧部21与第二内侧部22之间的间隙时,第一外侧部11和第二内侧部22上产生的感应电流与第一内侧部12和第二外侧部21上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
图24是本申请实施例提供的一种线圈模组的结构示意图。参见图24,该线圈模组包括:第一连接部L1、第二连接部L2、第一导线D1、第二导线D2以及相互绝缘的第一平面线圈绕组1和第二平面线圈绕组2,第一平面线圈绕组1和第二平面线圈绕组2均包括多匝线圈。
第一平面线圈绕组1的最内匝线圈包括第一段和第二段,第一段和第二段之间具有开口, 第一段包括第一外侧部11和第一内侧部12,第一外侧部11和第一内侧部12之间具有沿第一段的盘绕方向延伸的间隙,第二段包括第二外侧部21和第二内侧部22,第二外侧部21和第二内侧部22之间具有沿第二段的盘绕方向延伸的间隙,第二段的第一端为第一平面线圈绕组1的最内匝线圈的端部,第二段的第二端与第二段的第一端相对且靠近第一段的第一端。
第二平面线圈绕组2的最内匝线圈包括第三段和第四段,第三段和第四段之间具有开口,第三段包括第三外侧部31和第三内侧部32,第三外侧部31和第三内侧部32之间具有沿第三段的盘绕方向延伸的间隙,第四段包括第四外侧部41和第四内侧部42,第四外侧部41和第四内侧部42之间具有沿第四段的盘绕方向延伸的间隙,第三段的第一端为第二平面线圈绕组2的最内匝线圈的端部,第三段的第二端与第三段的第一端相对且靠近第四段的第一端。
第一外侧部11与第三外侧部31并联,第一内侧部12与第三内侧部32并联,第二外侧部21与第四外侧部41并联,第二内侧部22与第四内侧部42并联;第一连接部L1位于第一外侧部11与第二内侧部22之间,且第一外侧部11与第二内侧部22通过第一连接部L1实现导通,第二连接部L2位于第三内侧部32与第四外侧部41之间,且第三内侧部32与第四外侧部41通过第二连接部L2实现导通。
第一导线D1的一端为该线圈模组的第一端,第一导线D1的另一端与第一段的第二端相连通;第二导线D2的一端为该线圈模组的第二端,第二导线D2的另一端与第四段的第二端相连通;该线圈模组的第一端和该线圈模组的第二端中其中一个为引入端,另一个为引出端。
需要说明的是,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第一导线D1,再从第一导线D1流入第一平面线圈绕组1的第一段的第二端,然后从第一段中的第一外侧部11和第二平面线圈绕组2的第三段中的第三外侧部31通过第一连接部L1流至第一平面线圈绕组1的第二段中的第二内侧部22和第二平面线圈绕组2的第四段中的第四内侧部42,并同时从第一段中的第一内侧部12和第二平面线圈绕组2的第三段中的第三内侧部32通过第二连接部L2流至第一平面线圈绕组1的第二段中的第二外侧部21和第二平面线圈绕组2的第四段中的第四外侧部41,之后,从第四段的第二端流至第二导线D2,最后从第二导线D2流出。
或者,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第二导线D2,再从第二导线D2流入第二平面线圈绕组2的第四段的第二端,然后从第四段中的第四外侧部41和第一平面线圈绕组1的第二段中的第二外侧部21通过第二连接部L2流至第二平面线圈绕组2的第三段中的第三内侧部32和第一平面线圈绕组1的第一段中的第一内侧部12,并同时从第四段中的第四内侧部42和第一平面线圈绕组1的第二段中的第二内侧部22通过第一连接部L1流至第二平面线圈绕组2的第三段中的第三外侧部31和第一平面线圈绕组1的第一段中的第一外侧部11,之后,从第一段的第二端流至第一导线D1,最后从第一导线D1流出。
需要说明的是,第一平面线圈绕组1(或第二平面线圈绕组2)是由导体绕制而成的导电图形,该导电图形可以为圆环形、椭圆环形等,第一平面线圈绕组1(或第二平面线圈绕组2)包括的多匝线圈中的任意一匝线圈是导体以360度均匀绕制而成。第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈的宽度可以不同,例如,按照由最内匝线圈至最外匝线圈的顺序,第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈的宽度可以逐渐增大,或可以先增大后减小等。
另外,第一平面线圈绕组1与第二平面线圈绕组2的相互绝缘可以通过绝缘介质实现,第一平面线圈绕组1与第二平面线圈绕组2之间的绝缘介质用于隔离第一平面线圈绕组1和第二平面线圈绕组2,使两者之间除彼此连接部分之外的其它部分保持绝缘。具体地,可以在第一平面线圈绕组1与第二平面线圈绕组2之间设置绝缘层,这种情况下,第一平面线圈绕组1可以设置在PCB或FPC等电路板上,第二平面线圈绕组2也可以设置在PCB、FPC等电路板上。或者,可以是在第一平面线圈绕组1的多匝线圈的表面和第二平面线圈绕组2的多匝线圈的表面均包裹上绝缘物质,这种情况下,第一平面线圈绕组1的多匝线圈可以为扁平线或漆包线等,第二平面线圈绕组2的多匝线圈也可以为扁平线或漆包线等。当第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈为扁平线时,第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈可以是由模切工艺、蚀刻法或电镀加成法等形成;当第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈为漆包线时,第一平面线圈绕组1(或第二平面线圈绕组2)可以是由多根导线绕制而成,该多根导线中的每根导线可以是单股导线或多股绞线等,本申请实施例对此不作限定。
需要说明的是,第一外侧部11与第一内侧部12之间具有的沿第一平面线圈绕组1的最内匝线圈中的第一段的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第一平面线圈绕组1的最内匝线圈中的第一段进行切割、化学腐蚀等,来得到第一外侧部11和第一内侧部12,此时第一外侧部11与第一内侧部12之间具有间隙。或者,可以将多根导线并绕成第一平面线圈绕组1的最内匝线圈中的第一段,此时第一外侧部11可以是一根导线,第一内侧部12可以是另一根导线,第一外侧部11与第一内侧部12之间具有间隙。
另外,第一外侧部11中靠近第二内侧部22的一端与第一内侧部12中靠近第二内侧部22的一端分离。第一外侧部11中远离第二内侧部22的一端与第一内侧部12中远离第二内侧部22的一端,可以通过第一平面线圈绕组1的最内匝线圈中除第一段和第二段之外的其它部分实现导通,或者可以通过第一平面线圈绕组1中除最内匝线圈之外的其它匝线圈实现导通,或者可以通过第一平面线圈绕组1与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第二外侧部21与第二内侧部22之间具有的沿第一平面线圈绕组1的最内匝线圈中的第二段的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第一平面线圈绕组1的最内匝线圈中的第二段进行切割、化学腐蚀等,来得到第二外侧部21和第二内侧部22,此时第二外侧部21与第二内侧部22之间具有间隙。或者,可以将多根导线并绕成第一平面线圈绕组1的最内匝线圈中的第二段,此时第二外侧部21可以是一根导线,第二内侧部22可以是另一根导线,第二外侧部21与第二内侧部22之间具有间隙。
另外,第二外侧部21中靠近第一外侧部11的一端与第二内侧部22中靠近第一外侧部11的一端分离。第二外侧部21中远离第一外侧部11的一端与第二内侧部22中远离第一外侧部11的一端,可以通过第一平面线圈绕组1的最内匝线圈中除第一段和第二段之外的其它部分实现导通,或者可以通过第一平面线圈绕组1中除最内匝线圈之外的其它匝线圈实现导通,或者可以通过第一平面线圈绕组1与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第三外侧部31与第三内侧部32之间具有的沿第二平面线圈绕组2的最内匝线圈中的第三段的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第二平面线圈绕组2的最内匝线圈中的第三段进行切割、化学腐蚀等,来得到第三外侧部31和第三内侧部32,此时第三外侧部31与第三内侧部32之间具有间隙。或者,可以将多根导线并绕成第二平面线圈绕组2的最内匝线圈中的第三段,此时第三外侧部31可以是一根导线,第三内侧部32可以是另一根导线,第三外侧部31与第三内侧部32之间具有间隙。
另外,第三外侧部31中靠近第四外侧部41的一端与第三内侧部32中靠近第四外侧部41的一端分离。第三外侧部31中远离第四外侧部41的一端与第三内侧部32中远离第四外侧部41的一端,可以通过第二平面线圈绕组2的最内匝线圈中除第三段和第四段之外的其它部分实现导通,或者可以通过第二平面线圈绕组2中除最内匝线圈之外的其它匝线圈实现导通,或者可以通过第二平面线圈绕组2与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第四外侧部41与第四内侧部42之间具有的沿第二平面线圈绕组2的最内匝线圈中的第四段的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第二平面线圈绕组2的最内匝线圈中的第四段进行切割、化学腐蚀等,来得到第四外侧部41和第四内侧部42,此时第四外侧部41与第四内侧部42之间具有间隙。或者,可以将多根导线并绕成第二平面线圈绕组2的最内匝线圈中的第四段,此时第四外侧部41可以是一根导线,第四内侧部42可以是另一根导线,第四外侧部41与第四内侧部42之间具有间隙。
另外,第四外侧部41中靠近第三内侧部32的一端与第四内侧部42中靠近第三内侧部32的一端分离。第四外侧部41中远离第三内侧部32的一端与第四内侧部42中远离第三内侧部32的一端,可以通过第二平面线圈绕组2的最内匝线圈中除第三段和第四段之外的其它部分实现导通,或者可以通过第二平面线圈绕组2中除最内匝线圈之外的其它匝线圈实现导通,或者可以通过第二平面线圈绕组2与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第一导线D1的另一端与第一段的第二端相连通时,第一导线D1的另一端与第一段的第二端之间可以连接有一匝或多匝线圈,第一导线D1的另一端可以通过该一匝或多匝线圈与第一段的第二端实现连通。具体地,第一导线D1的另一端可以与第一目标线圈的端部连接。其中,第一目标线圈为按照由最内匝线圈至最外匝线圈的顺序,第一平面线圈绕组1的多匝线圈中最后一匝与第一段的第二端串联的线圈,即第一目标线圈为第一平面线圈绕组1的多匝线圈中与第一段的第二端串联的至少一匝线圈中位于最外侧的线圈。
另外,第二导线D2的另一端与第四段的第二端相连通时,第二导线D2的另一端与第四段的第二端之间可以连接有一匝或多匝线圈,第二导线D2的另一端可以通过该一匝或多匝线圈与第四段的第二端实现连通。具体地,第二导线D2的另一端可以与第二目标线圈的端部连接。其中,第二目标线圈为按照由最内匝线圈至最外匝线圈的顺序,第二平面线圈绕组2的多匝线圈中最后一匝与第四段的第二端串联的线圈,即第二目标线圈为第二平面线圈绕组2的多匝线圈中与第四段的第二端串联的至少一匝线圈中位于最外侧的线圈。
需要说明的是,第一连接部L1位于第一段与第二段之间的开口内,第二连接部L2位于 第三段与第四段之间的开口内。第一外侧部11与第一连接部L1可以通过一体成型、焊接等方式实现导通,第一连接部L1与第二内侧部22也可以通过一体成型、焊接等方式实现导通,当第一外侧部11、第一连接部L1和第二内侧部22是一体成型时,第一外侧部11、第一连接部L1和第二内侧部22属于一根导线。第三内侧部32与第二连接部L2可以通过一体成型、焊接等方式实现导通,第二连接部L2与第四外侧部41也可以通过一体成型、焊接等方式实现导通,当第三内侧部32、第二连接部L2和第四外侧部41是一体成型时,第三内侧部32、第二连接部L2和第四外侧部41属于一根导线。
另外,第一连接部L1与第二连接部L2之间无电气连接。第一连接部L1与该线圈模组中除第一外侧部11和第二内侧部22之外的其它部分没有电气连接。第二连接部L2与该线圈绕组中除第三内侧部32和第四外侧部41之外的其它部分没有电气连接。
再者,第一外侧部11与第三外侧部31并联时,第一外侧部11与第三外侧部31可以通过至少两个过孔实现并联。具体地,至少一个第一过孔贯穿第一外侧部11的第一端与第三外侧部31的第一端,第一外侧部11的第一端与第三外侧部31的第一端通过该至少一个第一过孔实现电气连接,至少一个第二过孔贯穿第一外侧部11的第二端与第三外侧部31的第二端,第一外侧部11的第二端与第三外侧部31的第二端通过该至少一个第二过孔实现电气连接,从而实现第一外侧部11与第三外侧部31的并联。第一内侧部12与第三内侧部32并联的方式、第二外侧部21与第四外侧部41并联的方式以及第二内侧部22与第四内侧部42并联的方式均与第一外侧部11与第三外侧部31并联的方式类似,本申请实施例对此不再赘述。
值得注意的是,第一平面线圈绕组1的多匝线圈的绕向与第二平面线圈绕组2的多匝线圈的绕向相反,此时第一平面线圈绕组1中的电流流向与第二平面线圈绕组2中的电流流向相同。并且,电流流入第一导线D1后,是先流过第一平面线圈绕组1,再流过第二平面线圈绕组2,最后从第二导线D2流出;或者,电流流入第二导线D2后,是先流过第二平面线圈绕组2,再流过第一平面线圈绕组1,最后从第一导线D1流出。
值得说明的是,第一平面线圈绕组1的最内匝线圈与第二平面线圈绕组2的最内匝线圈之间形成并联交叉结构。也即是,第一外侧部11、第三外侧部31、第一连接部L1、第二内侧部22和第四内侧部42组成一个目标导线,第一内侧部12、第三内侧部32、第二连接部L2、第二外侧部21和第四外侧部41组成一个目标导线,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙、第三外侧部31与第三内侧部32之间的间隙、第二外侧部21与第二内侧部22之间的间隙以及第四外侧部41与第四内侧部42之间的间隙时,这两个目标导线上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
进一步地,参见图25,该线圈模组还包括第三连接部L3和第四连接部L4。
第一平面线圈绕组1的目标线圈包括第五段,第五段与第一段之间具有开口,第五段包括第五外侧部51和第五内侧部52,该目标线圈为第一平面线圈绕组1中位于第一平面线圈绕组1的最内匝线圈的外侧且与第一平面线圈绕组1的最内匝线圈相邻的一匝线圈,第五外侧部51和第五内侧部52之间具有沿该目标线圈的盘绕方向延伸的间隙,第一导线D1的另一端通过该目标线圈与第一段的第二端实现连通。
第三连接部L3位于第一外侧部11与第五内侧部52之间,第一外侧部11与第五内侧部52通过第三连接部L3实现导通,第四连接部L4位于第一内侧部12与第五外侧部51之间,第一内侧部12与第五外侧部51通过第四连接部L4实现导通。
需要说明的是,第三连接部L3和第四连接部L4均位于第五段与第一段之间的开口内。第三连接部L3与第四连接部L4之间无电气连接。第三连接部L3与该线圈模组中除第一外侧部11、第三外侧部31和第五内侧部52之外的其它部分没有电气连接。第四连接部L4与该线圈绕组中除第一内侧部12、第三内侧部32和第五外侧部51之外的其它部分没有电气连接。
另外,第一内侧部12、第四连接部L4和第五外侧部51可以是一体成型,第三连接部L3包括分隔开的第一部分和第二部分,第一部分与第五内侧部52一体成型,第二部分与第三外侧部31一体成型,第一部分和第二部分彼此靠近的端部(即第一部分远离第五内侧部52的一端与第二部分远离第三外侧部31的一端)相导通,如至少一个过孔可以贯穿第一部分和第二部分彼此靠近的端部,第一部分和第二部分彼此靠近的端部可以通过该至少一个过孔实现电气连接。
值得说明的是,第一外侧部11、第三连接部L3和第五内侧部52组成的一个目标导线与第一内侧部12、第四连接部L4和第五外侧部51组成的一个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙以及穿过第五外侧部51与第五内侧部52之间的间隙时,第一外侧部11和第二内侧部22上产生的感应电流与第五外侧部51与第五内侧部52上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
进一步地,参见图26,本申请实施例不仅可以实现第一平面线圈绕组1的最内匝线圈与第二平面线圈绕组2的最内匝线圈之间的并联交叉,还可以实现第一平面线圈绕组1中除最内匝线圈之外的任意一匝线圈h1与第二平面线圈绕组2中除最内匝线圈之外的任意一匝线圈h2之间的并联交叉。线圈h1与线圈h2之间的并联交叉结构与第一平面线圈绕组1的最内匝线圈与第二平面线圈绕组2的最内匝线圈之间的并联交叉结构类似,本申请实施例对此不再赘述。
需要说明的是,线圈h1可以连接于与第一段的第二端与第一导线D1的另一端之间,线圈h2中除了与线圈h1形成并联交叉结构的部分之外的其它部分还具有开口,第二导线D2的另一端可以穿过该开口后与第四段的第二端相连通。
在本申请实施例中,线圈模组包括第一连接部L1、第二连接部L2、第一导线D1、第二导线D2以及相互绝缘的第一平面线圈绕组1和第二平面线圈绕组2。第一平面线圈绕组1的最内匝线圈包括第一段和第二段,第一段和第二段之间具有开口,第一段包括第一外侧部11和第一内侧部12,第二段包括第二外侧部21和第二内侧部22,第二段的第一端为第一平面线圈绕组1的最内匝线圈的端部,第二段的第二端与第二段的第一端相对且靠近第一段的第一端。第二平面线圈绕组2的最内匝线圈包括第三段和第四段,第三段和第四段之间具有开口,第三段包括第三外侧部31和第三内侧部32,第四段包括第四外侧部41和第四内侧部42,第三段的第一端为第二平面线圈绕组2的最内匝线圈的端部,第三段的第二端与第三段的第一端相对且靠近第四段的第一端。第一外侧部11与第三外侧部31并联,第一内侧部12与第 三内侧部32并联,第二外侧部21与第四外侧部41并联,第二内侧部22与第四内侧部42并联;第一连接部L1位于第一外侧部11与第二内侧部22之间,且第一外侧部11与第二内侧部22通过第一连接部L1实现导通,第二连接部L2位于第三内侧部32与第四外侧部41之间,且第三内侧部32与第四外侧部41通过第二连接部L2实现导通。第一导线D1的一端为该线圈模组的第一端,第一导线D1的另一端与第一段的第二端相连通;第二导线D2的一端为该线圈模组的第二端,第二导线D2的另一端与第四段的第二端相连通;该线圈模组的第一端和该线圈模组的第二端中其中一个为引入端,另一个为引出端。如此,第一外侧部11、第三外侧部31、第一连接部L1、第二内侧部22和第四内侧部42组成一个目标导线,第一内侧部12、第三内侧部32、第二连接部L2、第二外侧部21和第四外侧部41组成一个目标导线,这两个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙、第三外侧部31与第三内侧部32之间的间隙、第二外侧部21与第二内侧部22之间的间隙以及第六外侧部61与第四内侧部42之间的间隙时,这两个目标导线上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
图27或图28是本申请实施例提供的一种线圈模组的结构示意图。参见图27或图28,该线圈模组包括:第一连接部L1和第二连接部L2以及相互绝缘的第一平面线圈绕组1和第二平面线圈绕组2,第一平面线圈绕组1和所述第二平面线圈绕组2均包括多匝线圈。
沿第一平面线圈绕组1的卷绕方向,第一平面线圈绕组1包括第一段和第二段,且第一段和第二段之间具有开口,第一段包括第一外侧部11和第一内侧部12,第一外侧部11和第一内侧部12之间具有沿第一段的盘绕方向延伸的间隙,第二段包括第二外侧部21和第二内侧部22,第二外侧部21和第二内侧部22之间具有沿第二段的盘绕方向延伸的间隙,第一连接部L1位于第一外侧部11与第二内侧部22之间,第一外侧部11和第二内侧部22通过第一连接部L1实现导通。
第二平面线圈绕组2包括第三段,沿第一平面线圈绕组1的厚度方向,第三段靠近第一段的端部与第二段靠近第一段的端部至少部分重叠;第三段包括第三外侧部31和第三内侧部32,第三外侧部31和第三内侧部32之间具有沿第三段的盘绕方向延伸的间隙,第二连接部L2位于第三外侧部31与第一内侧部12之间,第三外侧部31和第一内侧部12通过第二连接部L2实现导通,第三外侧部31的靠近第一内侧部12的一端与第二外侧部21的靠近第一内侧部12的一端相连通。
需要说明的是,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第一平面线圈绕组1的第一段中的第一外侧部11和第一内侧部12,然后从第一外侧部11通过第一连接部L1流至第一平面线圈绕组1的第二段中的第二内侧部22,并同时从第一内侧部12通过第二连接部L2流至第二平面线圈绕组2的第三段中的第三外侧部31,又从第三外侧部31的靠近第一内侧部12的一端流至第二外侧部21的靠近第一内侧部12的一端,之后,从第二内侧部22和第二外侧部21流至第二平面线圈绕组2,最后从第二平面线圈绕组2中流出。
或者,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第 二平面线圈绕组2,从第二平面线圈绕组2流至第一平面线圈绕组1的第二段中的第二外侧部21和第二内侧部22,然后从第二内侧部22通过第一连接部L1流至第一平面线圈绕组1的第一段中的第一外侧部21,并同时从第二外侧部21的靠近第一内侧部12的一端流至第三外侧部31的靠近第一内侧部12的一端,又从第三外侧部31通过第二连接部L2流至第一平面线圈绕组2的第一段中的第一内侧部12,最后从第一平面线圈绕组1中流出。
需要说明的是,第一平面线圈绕组1(或第二平面线圈绕组2)是由导体绕制而成的导电图形,该导电图形可以为圆环形、椭圆环形等,第一平面线圈绕组1(或第二平面线圈绕组2)包括的多匝线圈中的任意一匝线圈是导体以360度均匀绕制而成。第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈的宽度可以不同,例如,按照由最内匝线圈至最外匝线圈的顺序,第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈的宽度可以逐渐增大,或可以先增大后减小等。
另外,第一平面线圈绕组1与第二平面线圈绕组2的相互绝缘可以通过绝缘介质实现,第一平面线圈绕组1与第二平面线圈绕组2之间的绝缘介质用于隔离第一平面线圈绕组1和第二平面线圈绕组2,使两者之间除彼此连接部分之外的其它部分保持绝缘。具体地,可以在第一平面线圈绕组1与第二平面线圈绕组2之间设置绝缘层,这种情况下,第一平面线圈绕组1可以设置在PCB或FPC等电路板上,第二平面线圈绕组2也可以设置在PCB、FPC等电路板上。或者,可以是在第一平面线圈绕组1的多匝线圈的表面和第二平面线圈绕组2的多匝线圈的表面均包裹上绝缘物质,这种情况下,第一平面线圈绕组1的多匝线圈可以为扁平线或漆包线等,第二平面线圈绕组2的多匝线圈也可以为扁平线或漆包线等。当第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈为扁平线时,第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈可以是由模切工艺、蚀刻法或电镀加成法等形成;当第一平面线圈绕组1(或第二平面线圈绕组2)的多匝线圈为漆包线时,第一平面线圈绕组1(或第二平面线圈绕组2)可以是由多根导线绕制而成,该多根导线中的每根导线可以是单股导线或多股绞线等,本申请实施例对此不作限定。
需要说明的是,第一外侧部11与第一内侧部12之间具有的沿第一段的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第一段进行切割、化学腐蚀等,来得到第一外侧部11和第一内侧部12,此时第一外侧部11与第一内侧部12之间具有间隙。或者,可以将多根导线并绕成第一段,此时第一外侧部11可以是一根导线,第一内侧部12可以是另一根导线,第一外侧部11与第一内侧部12之间具有间隙。
另外,第一外侧部11中靠近第二内侧部22的一端与第一内侧部12中靠近第二内侧部22的一端分离。第一外侧部11中远离第二内侧部22的一端与第一内侧部12中远离第二内侧部22的一端,可以通过第一平面线圈绕组1中除第一段和第二段之外的其它部分实现导通,或者可以通过第一平面线圈绕组1与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第二外侧部21与第二内侧部22之间具有的沿第二段的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第二段进行切割、化学腐蚀等,来得到第二外侧部21和第二内侧部22,此时第二外侧部21与第二内侧部22之间具有间隙。或者,可以将多根导线并绕成第二段,此时第二外侧部21可以是一根导线,第二内侧部22可以是另一根导线,第二外侧部21与第二内侧部22之间具有间隙。
另外,第二外侧部21中靠近第一外侧部11的一端与第二内侧部22中靠近第一外侧部11的一端分离。第二外侧部21中远离第一外侧部11的一端与第二内侧部22中远离第一外侧部11的一端,可以通过第一平面线圈绕组1中除第一段和第二段之外的其它部分实现导通,或者可以通过第一平面线圈绕组1与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第三外侧部31与第三内侧部32之间具有的沿第三段的盘绕方向延伸的间隙可以通过切割、化学腐蚀或并绕等方式形成。具体地,可以对第三段进行切割、化学腐蚀等,来得到第三外侧部31和第三内侧部32,此时第三外侧部31与第三内侧部32之间具有间隙。或者,可以将多根导线并绕成第三段,此时第三外侧部31可以是一根导线,第三内侧部32可以是另一根导线,第三外侧部31与第三内侧部32之间具有间隙。
另外,第三外侧部31中靠近第一外侧部11的一端与第三内侧部32中靠近第一外侧部11的一端分离。第三外侧部31中远离第一外侧部11的一端与第三内侧部32中远离第一外侧部11的一端,可以通过第二平面线圈绕组2中除第三段之外的其它部分实现导通,或者可以通过第二平面线圈绕组2与该线圈模组的引出端或引入端之间所连接的导线实现导通,或者可以通过该线圈模组与外部电路的连接端子实现导通等。
需要说明的是,第一连接部L1和第二连接部L2均位于第一段与第二段之间的开口内。第一连接部L1与该线圈模组中除第一外侧部11、第二内侧部22和第三内侧部32之外的其它部分没有电气连接。第二连接部L2与该线圈绕组中除第三外侧部31、第二外侧部21和第一内侧部12之外的其它部分没有电气连接。
另外,第一外侧部11、第一连接部L1和第二内侧部22是一体成型,第二连接部L2可以包括分隔开的第一部分和第二部分,第一部分与第一内侧部12一体成型,第二部分与第三外侧部31是一体成型,第一部分和第二部分彼此靠近的端部(即第一部分远离第一内侧部12的一端与第二部分远离第三外侧部31的一端)相导通,例如,至少一个过孔可以贯穿第一部分和第二部分彼此靠近的端部,第一部分和第二部分彼此靠近的端部可以通过该至少一个过孔实现电气连通。
其中,第三外侧部31的靠近第一内侧部12的一端与第二外侧部21的靠近第一内侧部12的一端相连通时,至少一个第一过孔贯穿第二外侧部21的靠近第一内侧部12的一端和第三外侧部31的靠近第一内侧部12的一端,第二外侧部21的靠近第一内侧部12的一端和第三外侧部31的靠近第一内侧部12的一端通过该至少一个第一过孔实现电气连通。
值得说明的是,通常将第一平面线圈绕组1称为第一层线圈绕组,将第二平面线圈绕组2称为第二层线圈绕组,则第三外侧部31与第二外侧部21跨层连通,如此即可通过第一连接部L1和第二连接部L2实现第一平面线圈绕组1中第一段与第二段之间的串联交叉。此时第一外侧部11、第一连接部L2和第二内侧部22组成的一个目标导线与第一内侧部12、第二连接部L2和第二外侧部21组成的一个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙以及穿过第二外侧部21与第二内侧部22之间的间隙时,第一外侧部11和第二内侧部22上产生的感应电流与第二外侧部21与第二内侧部22上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
进一步地,第二内侧部22的靠近第一外侧部11的一端与第三内侧部32的靠近第一外侧部11的一端相连通,具体地,至少一个第二过孔贯穿第二内侧部22的靠近第一外侧部11的一端和第三内侧部32的靠近第一外侧部11的一端,第二内侧部22的靠近第一外侧部11的一端和第三内侧部32的靠近第一外侧部11的一端通过该至少一个第二过孔实现电气连通。
需要说明的是,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第一平面线圈绕组1的第一段中的第一外侧部11和第一内侧部12,然后从第一外侧部11通过第一连接部L1流至第一平面线圈绕组1的第二段中的第二内侧部22和第二平面线圈绕组2的第三段中的第三内侧部32,并同时从第一内侧部12通过第二连接部L2流至第一平面线圈绕组1的第二段中的第二外侧部21和第二平面线圈绕组2的第三段中的第三外侧部31,之后,电流可以从第二外侧部21和第二内侧部22流至第二平面线圈绕组2,最后从第二平面线圈绕组2中流出。
或者,从外部电路流入该线圈模组的电流或者该线圈模组自身产生的电流,可以流入第二平面线圈绕组2,从第二平面线圈绕组2的第三段中的第三内侧部32通过第一连接部L1流至第一平面线圈绕组1的第一段中的第一外侧部11,并同时从第二平面线圈绕组2的第三段中的第三外侧部31通过第二连接部L2流至第一平面线圈绕组1的第一段中的第一内侧部12,并且,电流还可以从第二平面线圈绕组2流至第一平面线圈绕组1的第二段中的第二外侧部21和第二内侧部22,然后从第二内侧部22通过第一连接部L1流至第一外侧部21,并同时从第二外侧部21通过第二连接部L2流至第一内侧部12,最后从第一平面线圈绕组1中流出。
这种情况下,第二内侧部22与第三内侧部32跨层连通,如此即可通过第一连接部L1和第二连接部L2实现第一平面线圈绕组1中第一段与第二平面线圈绕组2中第三段之间的串联交叉。此时第一外侧部11、第一连接部L2和第三内侧部32组成的一个目标导线与第一内侧部12、第二连接部L2和第三外侧部31组成的一个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙以及穿过第三外侧部31与第三内侧部32之间的间隙时,第一外侧部11和第二内侧部22上产生的感应电流与第三外侧部31与第三内侧部32上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
更进一步地,第二外侧部21与第三外侧部31并联,第二内侧部22与第三内侧部32并联。这种情况下,第二平面线圈绕组2还可以包括第四段,第四段包括第四外侧部41和第四内侧部42,第四外侧部41和第四内侧部42之间具有沿第四段的盘绕方向延伸的间隙,第四外侧部41与第三外侧部31相连通,第四内侧部42与第三内侧部32相连通。
需要说明的是,第四外侧部41与第三外侧部31相连通时,第四外侧部41可以通过一匝或多匝线圈与第三外侧部31相连通;第四内侧部42与第三内侧部32相连通时,第四内侧部42可以通过一匝或多匝线圈与第三内侧部32相连通,本申请实施例对此不作限定。
值得说明的是,由于第一外侧部11、第一连接部L2和第三内侧部32组成的一个目标导线与第一内侧部12、第二连接部L2和第三外侧部31组成的一个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉,且第四外侧部41与第三外侧部31相连通,第四内侧部42与第三内侧部32相连通,所以磁场穿过第一外侧部11与第一内 侧部12之间的间隙以及穿过第四外侧部41和第四内侧部42之间的间隙时,第一外侧部11和第二内侧部22上产生的感应电流与第四外侧部41和第四内侧部42上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
需要说明的是,该线圈模组中除了包括因第一连接部L1和第二连接部L2而形成的串联交叉结构之外,还可以包括其它结构,如第一平面线圈绕组1的任意一匝线圈与第二平面线圈绕组2的任意一匝线圈形成的并联交叉结构、用于将第一平面线圈绕组1和第二平面线圈绕组2与外部电路连接的第一导线和第二导线等,这些结构均可以参考上述实施例中的相关说明,本申请实施例对此不再赘述。
在本申请实施例中,线圈模组包括第一连接部L1和第二连接部L2以及相互绝缘的第一平面线圈绕组1和第二平面线圈绕组2。沿第一平面线圈绕组1的卷绕方向,第一平面线圈绕组1包括第一段和第二段,且第一段和第二段之间具有开口,第一段包括第一外侧部11和第一内侧部12,第二段包括第二外侧部21和第二内侧部22,第一连接部L1位于第一外侧部11与第二内侧部22之间,第一外侧部11和第二内侧部22通过第一连接部L1实现导通。第二平面线圈绕组2包括第三段,沿第一平面线圈绕组1的厚度方向,第三段靠近第一段的端部与第二段靠近第一段的端部至少部分重叠;第三段包括第三外侧部31和第三内侧部32,第二连接部L2位于第三外侧部31与第一内侧部12之间,第三外侧部31和第一内侧部12通过第二连接部L2实现导通,第三外侧部31的靠近第一内侧部12的一端与第二外侧部21的靠近第一内侧部12的一端连接。如此,第一外侧部11、第一连接部L2和第二内侧部22组成的一个目标导线与第一内侧部12、第二连接部L2和第二外侧部21组成的一个目标导线在第一平面线圈绕组1(或第二平面线圈绕组2)所在平面上的投影存在交叉。在此情况下,磁场穿过第一外侧部11与第一内侧部12之间的间隙以及穿过第二外侧部21与第二内侧部22之间的间隙时,第一外侧部11和第二内侧部22上产生的感应电流与第二外侧部21与第二内侧部22上产生的感应电流的方向相反,因而它们至少可以相互抵消一部分,从而可以有效降低第一平面线圈绕组1和第二平面线圈绕组2中的环流损耗,提高该线圈模组的无线充电效率。
图29是本申请实施例提供的一种无线充电发射装置的结构示意图。参见图29,该无线充电发射装置包括:直流/交流转换电路292、控制单元293和上述图3-图28任一所示的线圈模组294;
直流/交流转换电路292的输入端连接直流电源291;直流/交流转换电路292在控制单元293的控制下将直流电源291输入的直流信号转换为交流信号,并将该交流信号传输到线圈模组294,以使线圈模组294对该交流信号进行发射。
其中,直流/交流转换电路292的输出端与线圈模组294连接,控制单元293的控制端与直流/交流转换电路292的被控端连接。
需要说明的是,该无线充电发射装置可以给无线充电接收装置进行无线充电,如该无线充电发射装置可以为无线充电器等。
其中,控制单元293可以在该无线充电发射装置需要为无线充电接收装置进行无线充电时,控制直流/交流转换电路292的开关导通,以使直流/交流转换电路292开始工作,将直流 电源291输入的直流信号转换为交流信号。
进一步地,参见图30,控制单元293的第一电压检测端与直流电源291连接,控制单元293的第二电压检测端与线圈模组294连接,控制单元293的第一电流检测端与直流电源291连接,控制单元293的第二电流检测端与线圈模组294连接。
此时,控制单元293可以检测直流电源291的电压和电流,以及检测线圈模组294的电压和电流,之后根据检测到的电压和电流,来对直流/交流转换电路292进行控制。
进一步地,参见图31,该无线充电发射装置还包括:匹配电路295;匹配电路295连接在直流/交流转换电路292与线圈模组294之间,用于与线圈模组294发生谐振,使得直流/交流转换电路292输出的交流信号可以高效率地传输到线圈模组294中。
更进一步地,参见图32,控制单元293的控制端与匹配电路295的被控端连接。
此时控制单元293可以在该无线充电发射装置需要为无线充电接收装置进行无线充电时,控制匹配电路295的开关导通,以使匹配电路295开始工作,与线圈模组294发生谐振。
在本申请实施例中,无线充电发射装置包括线圈模组294,线圈模组294中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该无线充电发射装置的无线充电效率。
图33是本申请实施例提供的一种无线充电接收装置的结构示意图。参见图33,该无线充电接收装置包括:交流/直流转换电路331、控制单元332、负载333和上述图3-图21任一所示的线圈模组334;
线圈模组334与交流/直流转换电路331的输入端连接;线圈模组334接收交流信号,并将该交流信号传输到交流/直流转换电路331;交流/直流转换电路331在控制单元332的控制下将该交流信号转换为直流信号,并将该直流信号输出给负载333,以为负载333供电。
其中,交流/直流转换电路331的输出端与负载333连接,控制单元332的控制端与交流/直流转换电路331的被控端连接。
需要说明的是,该无线充电接收装置可以使用无线充电发射装置对自身进行无线充电,如该无线充电接收装置可以为手机、平板电脑等电子设备。
其中,控制单元332可以在该无线充电接收装置需要使用无线充电发射装置对自身进行无线充电时,控制交流/直流转换电路331的开关导通,以使交流/直流转换电路331开始工作,将线圈模组334输入的交流信号转换为直流信号,并将该直流信号输出给负载333。
进一步地,参见图34,控制单元332的第一电压检测端与线圈模组334连接,控制单元332的第二电压检测端与负载333连接,控制单元332的第一电流检测端与线圈模组334连接,控制单元332的第二电流检测端与负载333连接。
此时,控制单元332可以检测线圈模组334的电压和电流,以及检测负载333的电压和电流,之后根据检测到的电压和电流,来对交流/直流转换电路331进行控制。
进一步地,参见图35,该无线充电接收装置还包括:匹配电路335;匹配电路335连接在线圈模组334与交流/直流转换电路331之间,用于与线圈模组334发生谐振,使得线圈模组334输出的交流信号可以高效率地传输到交流/直流转换电路331中。
更进一步地,参见图36,控制单元332的控制端与匹配电路335的被控端连接。
此时控制单元332可以在该无线充电接收装置需要使用无线充电发射装置对自身进行无 线充电时,控制匹配电路335的开关导通,以使匹配电路335开始工作,与线圈模组334发生谐振。
在本申请实施例中,无线充电接收装置包括线圈模组334,线圈模组334中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该无线充电接收装置的无线充电效率。
图37是本申请实施例提供的一种无线充电系统的结构示意图。参见图37,该无线充电系统包括上述图29-图32任一所示的无线充电发射装置371,以及包括上述图33-图36任一所示的无线充电接收装置372,无线充电发射装置用于为无线充电接收装置进行无线充电。
需要说明的是,无线充电发射装置中的线圈模组发射的交流信号产生磁场,通过磁耦合可以使得无线充电接收装置中的线圈模组产生电压,继而可以完成无线充电发射装置为无线充电接收装置中的负载的无线充电。
在本申请实施例中,无线充电系统包括无线充电发射装置和无线充电接收装置,无线充电发射装置和无线充电接收装置均包括线圈模组,该线圈模组中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该无线充电系统的无线充电效率。
图38是本申请实施例提供的一种终端的结构示意图。参见图38,该终端包括工作负载电路381、交流/直流转换电路382、充电控制单元383和上述图3-图24任一所示的线圈模组384;
线圈模组384与交流/直流转换电路382的输入端连接;线圈模组384接收交流信号,并将该交流信号传输到交流/直流转换电路382;交流/直流转换电路382在充电控制单元383的控制下将该交流信号转换为直流信号,并将该直流信号输出给工作负载电路381。
其中,交流/直流转换电路382的输出端与工作负载电路381连接,充电控制单元383的控制端与交流/直流转换电路382的被控端连接。
需要说明的是,该终端可以为手机、平板电脑等电子设备。
其中,充电控制单元383可以在该终端需要使用无线充电器对自身进行无线充电时,控制交流/直流转换电路382的开关导通,以使交流/直流转换电路382开始工作,将线圈模组384输入的交流信号转换为直流信号,并将该直流信号输出给工作负载电路381。
进一步地,参见图39,充电控制单元383的第一电压检测端与线圈模组384连接,充电控制单元383的第二电压检测端与工作负载电路381连接,充电控制单元383的第一电流检测端与线圈模组384连接,充电控制单元383的第二电流检测端与工作负载电路381连接。
此时,充电控制单元383可以检测线圈模组384的电压和电流,以及检测工作负载电路381的电压和电流,之后根据检测到的电压和电流,来对交流/直流转换电路382进行控制。
进一步地,参见图40,该终端还包括:匹配电路385;匹配电路385连接在线圈模组384与交流/直流转换电路382之间,用于与线圈模组384发生谐振,使得线圈模组384输出的交流信号可以高效率地传输到交流/直流转换电路382中。
更进一步地,参见图41,充电控制单元383的控制端与匹配电路385的被控端连接。
此时充电控制单元383可以在该终端需要使用无线充电器对自身进行无线充电时,控制匹配电路385的开关导通,以使匹配电路385开始工作,与线圈模组384发生谐振。
在本申请实施例中,终端包括线圈模组384,线圈模组384中包括的第一平面线圈绕组和第二平面线圈绕组中的环流损耗较少,因而可以提高该终端的无线充电效率。
以上所述为本申请提供的实施例,并不用以限制本申请,凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (27)

  1. 一种线圈模组,其特征在于,所述模组包括:相互绝缘的第一平面线圈绕组和第二平面线圈绕组,所述第一平面线圈绕组和所述第二平面线圈绕组均包括多匝线圈;
    所述第一平面线圈绕组的第一匝线圈包括第一外侧部和第一内侧部,且所述第一平面线圈绕组的第一匝线圈的端部包括所述第一外侧部的端部和所述第一内侧部的端部,所述第一外侧部和所述第一内侧部之间具有沿所述第一平面线圈绕组的第一匝线圈的盘绕方向延伸的间隙;
    所述第二平面线圈绕组的第一匝线圈包括第二外侧部和第二内侧部,且所述第二平面线圈绕组的第一匝线圈的端部包括所述第二外侧部的端部和所述第二内侧部的端部,所述第二外侧部和所述第二内侧部之间具有沿所述第二平面线圈绕组的第一匝线圈的盘绕方向延伸的间隙;
    所述第一外侧部的端部与所述第二内侧部的端部实现导通,所述第二外侧部的端部与所述第一内侧部的端部实现导通;
    其中,所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最内匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最内匝线圈;或者,所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最外匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最外匝线圈。
  2. 如权利要求1所述的模组,其特征在于,所述第一外侧部的端部与所述第二内侧部的端部之间通过至少一个第一过孔实现导通。
  3. 如权利要求1所述的模组,其特征在于,所述第二外侧部的端部与所述第一内侧部的端部之间通过至少一个第二过孔实现导通。
  4. 如权利要求1所述的模组,其特征在于,所述模组还包括第一连接部,所述第一连接部位于所述第一外侧部与所述第二内侧部之间,所述第一外侧部的端部与所述第二内侧部的端部之间通过第一连接部实现导通。
  5. 如权利要求1所述的模组,其特征在于,所述模组还包括第二连接部,所述第二连接部位于所述第二外侧部与所述第一内侧部之间,所述第二外侧部的端部与所述第一内侧部的端部之间通过第二连接部实现导通。
  6. 如权利要求1至5任一项所述的模组,其特征在于,所述模组还包括第三连接部和第四连接部;
    所述第一平面线圈绕组中除所述第一外侧部和所述第一内侧部之外的其它部分包括第一段和第二段,所述第一段和所述第二段之间具有开口,所述第一段包括第三外侧部和第三内侧部,所述第三外侧部和所述第三内侧部之间具有沿所述第一段的盘绕方向延伸的间隙,所述第二段包括第四外侧部和第四内侧部,所述第四外侧部和所述第四内侧部之间具有沿所述第二段的盘绕方向延伸的间隙;
    所述第二平面线圈绕组中除所述第二外侧部和所述第二内侧部之外的其它部分包括第三段和第四段,所述第三段和所述第四段之间具有开口,所述第三段包括第五外侧部和第五内侧部,所述第五外侧部和所述第五内侧部之间具有沿所述第三段的盘绕方向延伸的间隙,所 述第四段包括第六外侧部和第六内侧部,所述第六外侧部和所述第六内侧部之间具有沿所述第四段的盘绕方向延伸的间隙;
    所述第三外侧部与所述第五外侧部并联,所述第三内侧部与所述第五内侧部并联,所述第四外侧部与所述第六外侧部并联,所述第四内侧部与所述第六内侧部并联;所述第三连接部位于所述第三外侧部与所述第四内侧部之间,且所述第三外侧部和所述第四内侧部通过所述第三连接部实现导通,所述第四连接部位于所述第五内侧部与所述第六外侧部之间,且所述第五内侧部和所述第六外侧部通过所述第四连接部实现导通。
  7. 如权利要求6所述的模组,其特征在于,
    所述第一段和所述第二段位于所述第一平面线圈绕组的第N匝线圈,所述第三段和所述第四段位于所述第二平面线圈绕组的第M匝线圈,所述第N匝线圈为所述第一平面线圈绕组的最内匝线圈和所述第一平面线圈绕组的最外匝线圈之间的任一匝线圈,所述第M匝线圈为所述第二平面线圈绕组的最内匝线圈和所述第二平面线圈绕组的最外匝线圈之间的任一匝线圈;
    所述第N匝线圈的一端延伸至所述第一平面线圈绕组中位于所述第N匝线圈的内侧且与所述第N匝线圈相邻的第N-1匝线圈的一端,所述第N匝线圈的另一端延伸至所述第一平面线圈绕组中位于所述第N匝线圈的外侧且与所述第N匝线圈相邻的第N+1匝线圈的一端;所述第M匝线圈中除具有所述第三段和所述第四段之间的开口之外还具有其它开口,所述第二平面线圈绕组中位于所述第M匝线圈的内侧且与所述第M匝线圈相邻的第M-1匝线圈的一端穿过所述其它开口且延伸至所述第二平面线圈绕组中位于所述第M匝线圈的外侧的第K匝线圈的一端。
  8. 如权利要求1所述的模组,其特征在于,在所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最内匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最内匝线圈的情况下,所述模组包括第一导线和第二导线;
    所述第一导线的一端为所述模组的第一端,所述第一导线的另一端与第一目标线圈的端部连接,所述第一目标线圈为按照由最内匝线圈至最外匝线圈的顺序,所述第一平面线圈绕组的多匝线圈中最后一匝与所述第一平面线圈绕组的最内匝线圈的端部串联的线圈;
    所述第二导线的一端为所述模组的第二端,所述第二导线的另一端与第二目标线圈的端部连接,所述第二目标线圈为按照由最内匝线圈至最外匝线圈的顺序,所述第二平面线圈绕组的多匝线圈中最后一匝与所述第二平面线圈绕组的最内匝线圈的端部串联的线圈;
    所述模组的第一端和所述模组的第二端中其中一个为引入端,另一个为引出端。
  9. 如权利要求8所述的模组,其特征在于,沿所述第一导线的长度方向,所述第一导线包括相互分隔的第一子导线和第二子导线;沿所述第一目标线圈的盘绕方向,所述第一目标线圈包括相互分隔的第七外侧部和第七内侧部;
    所述第七外侧部的端部与所述第一子导线的端部连接,所述第七内侧部的端部与所述第二子导线的端部连接。
  10. 如权利要求8或9所述的模组,其特征在于,沿所述第二导线的长度方向,所述第二导线包括相互分隔的第三子导线和第四子导线;沿所述第二目标线圈的盘绕方向,所述第二目标线圈包括相互分隔的第八外侧部和第八内侧部;
    所述第八外侧部的端部与所述第三子导线的端部连接,所述第八内侧部的端部与所述第 四子导线的端部连接。
  11. 如权利要求1所述的模组,其特征在于,在所述第一平面线圈绕组的第一匝线圈为所述第一平面线圈绕组的最外匝线圈,且所述第二平面线圈绕组的第一匝线圈为所述第二平面线圈绕组的最外匝线圈的情况下,所述模组包括第一导线和第二导线;
    所述第一导线的一端为所述模组的第一端,所述第一导线的另一端与第三目标线圈的端部连接,所述第三目标线圈为按照由最外匝线圈至最内匝线圈的顺序,所述第一平面线圈绕组的多匝线圈中最后一匝与所述第一平面线圈绕组的最外匝线圈的端部串联的线圈;
    所述第二导线的一端为所述模组的第二端,所述第二导线的另一端与第四目标线圈的端部连接,所述第四目标线圈为按照由最外匝线圈至最内匝线圈的顺序,所述第二平面线圈绕组的多匝线圈中最后一匝与所述第二平面线圈绕组的最外匝线圈的端部串联的线圈;
    所述模组的第一端和所述模组的第二端中其中一个为引入端,另一个为引出端。
  12. 如权利要求11所述的模组,其特征在于,沿所述第一导线的长度方向,所述第一导线包括相互分隔的第一子导线和第二子导线;沿所述第三目标线圈的盘绕方向,所述第三目标线圈包括相互分隔的第七外侧部和第七内侧部;
    所述第七外侧部的端部与所述第一子导线的端部连接,所述第七内侧部的端部与所述第二子导线的端部连接。
  13. 如权利要求11或12所述的模组,其特征在于,沿所述第二导线的长度方向,所述第二导线包括相互分隔的第三子导线和第四子导线;沿所述第四目标线圈的盘绕方向,所述第四目标线圈包括相互分隔的第八外侧部和第八内侧部;
    所述第八外侧部的端部与所述第三子导线的端部连接,所述第八内侧部的端部与所述第四子导线的端部连接。
  14. 一种线圈模组,其特征在于,所述模组包括:第一连接部、第二连接部、第一导线、第二导线以及相互绝缘的第一平面线圈绕组和第二平面线圈绕组,所述第一平面线圈绕组和所述第二平面线圈绕组均包括多匝线圈;
    所述第一平面线圈绕组的最内匝线圈包括第一段和第二段,所述第一段和所述第二段之间具有开口,所述第一段包括第一外侧部和第一内侧部,所述第一外侧部和所述第一内侧部之间具有沿所述第一段的盘绕方向延伸的间隙,所述第二段包括第二外侧部和第二内侧部,所述第二外侧部和所述第二内侧部之间具有沿所述第二段的盘绕方向延伸的间隙,所述第二段的第一端为所述第一平面线圈绕组的最内匝线圈的端部,所述第二段的第二端与所述第二段的第一端相对且靠近所述第一段的第一端;
    所述第二平面线圈绕组的最内匝线圈包括第三段和第四段,所述第三段和所述第四段之间具有开口,所述第三段包括第三外侧部和第三内侧部,所述第三外侧部和所述第三内侧部之间具有沿所述第三段的盘绕方向延伸的间隙,所述第四段包括第四外侧部和第四内侧部,所述第四外侧部和所述第四内侧部之间具有沿所述第四段的盘绕方向延伸的间隙,所述第三段的第一端为所述第二平面线圈绕组的最内匝线圈的端部,所述第三端的第二端与所述第三段的第一端相对且靠近所述第四段的第一端;
    所述第一外侧部与所述第三外侧部并联,所述第一内侧部与所述第三内侧部并联,所述第二外侧部与所述第四外侧部并联,所述第二内侧部与所述第四内侧部并联;所述第一连接部所述第一外侧部与所述第二内侧部之间,且所述第一外侧部与所述第二内侧部通过所述第 一连接部实现导通,所述第二连接部位于所述第三内侧部与所述第四外侧部之间,所述第三内侧部与所述第四外侧部通过所述第二连接部实现导通;
    所述第一导线的一端为所述模组的第一端,所述第一导线的另一端与所述第一段的第二端相连通,所述第二导线的一端为所述模组的第二端,所述第二导线的另一端与所述第四段的第二端相连通;
    所述模组的第一端和所述模组的第二端中其中一个为引入端,另一个为引出端。
  15. 如权利要求14所述的模组,其特征在于,所述模组还包括第三连接部和第四连接部;
    所述第一平面线圈绕组的目标线圈包括第五段,所述第五段与所述第一段之间具有开口,所述第五段包括第五外侧部和第五内侧部,所述目标线圈为所述第一平面线圈绕组中位于所述第一平面线圈绕组的最内匝线圈的外侧且与所述第一平面线圈绕组的最内匝线圈相邻的一匝线圈,所述第五外侧部和所述第五内侧部之间具有沿所述目标线圈的盘绕方向延伸的间隙,所述第一导线的另一端通过所述目标线圈与所述第一段的第二端实现连通;
    所述第三连接部位于所述第一外侧部与所述第五内侧部之间,所述第一外侧部与所述第五内侧部通过所述第三连接部实现导通,所述第四连接部位于所述第一内侧部与所述第五外侧部之间,所述第一内侧部与所述第五外侧部通过所述第四连接部实现导通。
  16. 一种线圈模组,其特征在于,所述模组包括:第一连接部和第二连接部以及相互绝缘的第一平面线圈绕组和第二平面线圈绕组,所述第一平面线圈绕组和所述第二平面线圈绕组均包括多匝线圈;
    沿所述第一平面线圈绕组的卷绕方向,所述第一平面线圈绕组包括第一段和第二段,且所述第一段和所述第二段之间具有开口,所述第一段包括第一外侧部和第一内侧部,所述第一外侧部和所述第一内侧部之间具有沿所述第一段的盘绕方向延伸的间隙,所述第二段包括第二外侧部和第二内侧部,所述第二外侧部和所述第二内侧部之间具有沿所述第二段的盘绕方向延伸的间隙,所述第一连接部位于所述第一外侧部与所述第二内侧部之间,所述第一外侧部和所述第二内侧部通过所述第一连接部实现导通;
    所述第二平面线圈绕组包括第三段,沿所述第一平面线圈绕组的厚度方向,所述第三段靠近所述第一段的端部与所述第二段靠近所述第一段的端部至少部分重叠;所述第三段包括第三外侧部和第三内侧部,所述第三外侧部和所述第三内侧部之间具有沿所述第三段的盘绕方向延伸的间隙,所述第二连接部位于所述第三外侧部与所述第一内侧部之间,所述第三外侧部和所述第一内侧部通过所述第二连接部实现导通,所述第三外侧部的靠近所述第一内侧部的一端与所述第二外侧部的靠近所述第一内侧部的一端相连通。
  17. 如权利要求16所述的模组,其特征在于,所述第一外侧部、所述第一连接部和所述第二内侧部是一体成型。
  18. 如权利要求16所述的模组,其特征在于,所述第二连接部包括分隔开的第一部分和第二部分,所述第一部分与所述第一内侧部是一体成型,所述第二部分与所述第三外侧部一体成型,所述第一部分和所述第二部分彼此靠近的端部相导通。
  19. 如权利要求16至18任一项所述的模组,其特征在于,至少一个第一过孔贯穿所述第二外侧部的靠近所述第一内侧部的一端和所述第三外侧部的靠近所述第一内侧部的一端,所述第二外侧部的靠近所述第一内侧部的一端和所述第三外侧部的靠近所述第一内侧部的一端通过所述至少一个第一过孔实现电气连通。
  20. 如权利要求16至19任一项所述的模组,其特征在于,所述第二内侧部的靠近所述第一外侧部的一端与所述第三内侧部的靠近所述第一外侧部的一端相连通。
  21. 如权利要求20所述的模组,其特征在于,至少一个第二过孔贯穿所述第二内侧部的靠近所述第一外侧部的一端和所述第三内侧部的靠近所述第一外侧部的一端,所述第二内侧部的靠近所述第一外侧部的一端和所述第三内侧部的靠近所述第一外侧部的一端通过所述至少一个第二过孔实现电气连通。
  22. 一种无线充电发射装置,其特征在于,所述装置包括:直流/交流转换电路、控制单元和上述权利要求1至21任一项所述的线圈模组;
    所述直流/交流转换电路的输入端连接直流电源;
    所述直流/交流转换电路在所述控制单元的控制下将所述直流电源输入的直流信号转换为交流信号,并将所述交流信号传输到所述线圈模组,以使所述线圈模组对所述交流信号进行发射。
  23. 如权利要求22所述的装置,其特征在于,所述装置还包括匹配电路;
    所述匹配电路连接在所述直流/交流转换电路与所述线圈模组之间,用于与所述线圈模组发生谐振。
  24. 一种无线充电接收装置,其特征在于,所述装置包括:交流/直流转换电路、控制单元、负载和上述权利要求1至21任一项所述的线圈模组;
    所述线圈模组与所述交流/直流转换电路的输入端连接;
    所述线圈模组接收交流信号,并将所述交流信号传输到所述交流/直流转换电路;所述交流/直流转换电路在所述控制单元的控制下将所述交流信号转换为直流信号,并将所述直流信号输出给负载,以为所述负载供电。
  25. 如权利要求24所述的无线充电接收装置,其特征在于,所述装置还包括匹配电路;
    所述匹配电路连接在所述线圈模组与所述交流/直流转换电路之间,用于与所述线圈模组发生谐振。
  26. 一种无线充电系统,其特征在于,所述系统包括上述权利要求22或23所述的无线充电发射装置,以及包括上述权利要求24或25所述的无线充电接收装置,所述无线充电发射装置用于为所述无线充电接收装置进行无线充电。
  27. 一种终端,其特征在于,所述终端包括交流/直流转换电路、充电控制单元、工作负载电路和上述权利要求1至21任一项所述的线圈模组;
    所述线圈模组与所述交流/直流转换电路的输入端连接;
    所述线圈模组接收交流信号,并将所述交流信号传输到所述交流/直流转换电路;所述交流/直流转换电路在所述充电控制单元的控制下将所述交流信号转换为直流信号,并将所述直流信号输出给所述工作负载电路。
PCT/CN2019/089310 2018-08-04 2019-05-30 线圈模组、无线充电发射装置、接收装置、系统和终端 WO2020029664A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19847844.8A EP3806117B1 (en) 2018-08-04 2019-05-30 Coil module, wireless charging transmission apparatus, receiving apparatus, system, and terminal
US17/155,579 US12020857B2 (en) 2018-08-04 2021-01-22 Coil module, wireless charging transmitting apparatus, wireless charging receiving apparatus, wireless charging system, and terminal

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201810881202.X 2018-08-04
CN201810881202 2018-08-04
CN201910111453.4 2019-02-12
CN201910111453.4A CN109961942B (zh) 2018-08-04 2019-02-12 线圈模组、无线充电发射装置、接收装置、系统和终端

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/155,579 Continuation US12020857B2 (en) 2018-08-04 2021-01-22 Coil module, wireless charging transmitting apparatus, wireless charging receiving apparatus, wireless charging system, and terminal

Publications (1)

Publication Number Publication Date
WO2020029664A1 true WO2020029664A1 (zh) 2020-02-13

Family

ID=67023620

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/089310 WO2020029664A1 (zh) 2018-08-04 2019-05-30 线圈模组、无线充电发射装置、接收装置、系统和终端

Country Status (4)

Country Link
US (1) US12020857B2 (zh)
EP (1) EP3806117B1 (zh)
CN (1) CN109961942B (zh)
WO (1) WO2020029664A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108565102B (zh) * 2018-03-28 2020-08-14 华为技术有限公司 线圈模组、无线充电发射装置、接收装置、系统和终端
CN109961942B (zh) * 2018-08-04 2020-06-16 华为技术有限公司 线圈模组、无线充电发射装置、接收装置、系统和终端
CN109887724B (zh) 2019-02-28 2021-10-01 华为技术有限公司 线圈模组、无线充电发射、接收装置、系统及移动终端
CN110289156B (zh) 2019-05-24 2020-11-10 华为技术有限公司 线圈绕组、线圈模组、发射装置、接收装置、系统和终端
CN112002540B (zh) * 2020-07-07 2022-05-03 瑞声新能源发展(常州)有限公司科教城分公司 线圈和无线充电设备
CN112185660B (zh) * 2020-09-11 2022-06-03 瑞声新能源发展(常州)有限公司科教城分公司 线圈和无线充电设备
DE102021112455A1 (de) * 2021-05-12 2022-11-17 Technische Universität Dresden, Körperschaft des öffentlichen Rechts Spulenanordnungen und Verfahren zum Herstellen einer Spulenanordnung
CN113690033A (zh) * 2021-07-23 2021-11-23 东莞市优琥电子科技有限公司 变压器和电源适配器
CN118232537A (zh) * 2022-12-20 2024-06-21 荣耀终端有限公司 一种电子设备和无线充电系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI598899B (zh) * 2017-05-11 2017-09-11 瑞昱半導體股份有限公司 電感裝置
CN108321914A (zh) * 2017-11-20 2018-07-24 华为技术有限公司 一种线圈及无线充电接收装置、与发射装置与系统
CN109087791A (zh) * 2017-06-13 2018-12-25 Tdk株式会社 线圈部件
CN109961942A (zh) * 2018-08-04 2019-07-02 华为技术有限公司 线圈模组、无线充电发射装置、接收装置、系统和终端

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI971180A (fi) * 1997-03-20 1998-12-23 Micronas Oy Stripe-line-kela
WO2006008878A1 (ja) 2004-07-20 2006-01-26 Murata Manufacturing Co., Ltd. コイル部品
CN102087909A (zh) * 2009-12-08 2011-06-08 上海华虹Nec电子有限公司 内外径电流补偿的多路径叠层电感
KR101339486B1 (ko) 2012-03-29 2013-12-10 삼성전기주식회사 박막 코일 및 이를 구비하는 전자 기기
CA2912198C (en) 2013-05-10 2021-10-12 Cynetic Designs Ltd. Inductively coupled wireless power and data for a garment via a dongle
WO2016010374A1 (ko) * 2014-07-15 2016-01-21 주식회사 아모텍 적층형 메타물질 시트 및 그 제조방법과, 이를 이용한 무선 충전 모듈
TWI587329B (zh) * 2014-10-31 2017-06-11 台灣東電化股份有限公司 無線充電印刷電路板線圈結構
US10224723B2 (en) * 2015-09-25 2019-03-05 Intel Corporation Radio frequency filter for wireless power system
TWI595723B (zh) * 2016-02-05 2017-08-11 捷佳科技股份有限公司 無線充電裝置的製造方法
US10332663B2 (en) 2016-02-05 2019-06-25 Samsung Electro-Mechanics Co., Ltd. Coil module and wireless power receiver using the same
US20170237292A1 (en) * 2016-02-12 2017-08-17 Qualcomm Incorporated Reconfigurable multi-mode antenna for wireless power transfer
US10553345B2 (en) 2016-03-25 2020-02-04 Wits Co., Ltd. Coil device and apparatus including the same
CN107492436B (zh) * 2016-06-11 2019-11-22 宁波微鹅电子科技有限公司 一种感应线圈结构和无线电能传输系统
US10504648B2 (en) * 2016-12-20 2019-12-10 Amotech Co., Ltd. Antenna for wireless power transmission
CN108565102B (zh) * 2018-03-28 2020-08-14 华为技术有限公司 线圈模组、无线充电发射装置、接收装置、系统和终端
CN109887724B (zh) * 2019-02-28 2021-10-01 华为技术有限公司 线圈模组、无线充电发射、接收装置、系统及移动终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI598899B (zh) * 2017-05-11 2017-09-11 瑞昱半導體股份有限公司 電感裝置
CN109087791A (zh) * 2017-06-13 2018-12-25 Tdk株式会社 线圈部件
CN108321914A (zh) * 2017-11-20 2018-07-24 华为技术有限公司 一种线圈及无线充电接收装置、与发射装置与系统
CN109961942A (zh) * 2018-08-04 2019-07-02 华为技术有限公司 线圈模组、无线充电发射装置、接收装置、系统和终端

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3806117A4

Also Published As

Publication number Publication date
CN109961942B (zh) 2020-06-16
EP3806117A4 (en) 2021-09-08
CN109961942A (zh) 2019-07-02
EP3806117A1 (en) 2021-04-14
US12020857B2 (en) 2024-06-25
US20210142942A1 (en) 2021-05-13
EP3806117B1 (en) 2024-04-17

Similar Documents

Publication Publication Date Title
WO2020029664A1 (zh) 线圈模组、无线充电发射装置、接收装置、系统和终端
CN110289156B (zh) 线圈绕组、线圈模组、发射装置、接收装置、系统和终端
WO2019184548A1 (zh) 线圈模组、无线充电发射装置、接收装置、系统和终端
US11978583B2 (en) Coil module, wireless charging transmitting apparatus, wireless charging receiving apparatus, wireless charging system, and mobile terminal
RU2481662C2 (ru) Плоская катушка
US6867678B2 (en) Transformer structure
CN104240917A (zh) 可视对讲系统开关电源用变压器及其制备方法
RU2388092C2 (ru) Импульсный трансформатор с фольговой обмоткой
CN109789804B (zh) 用于对车辆进行感应充电的线圈单元
WO2013018268A1 (ja) 電力伝送コイルとそれを用いた非接触給電装置
JP2000299020A (ja) 給電設備およびその高周波電流用ケーブル
CN205542318U (zh) 基于柔性电路板的变压器绕组及变压器
CN201327765Y (zh) 用于电焊设备的高频变压器
US20160111201A1 (en) Transformer
KR101338905B1 (ko) 고주파 변압기
US20220108829A1 (en) Wire for use in transformer winding and transformer
JP4599818B2 (ja) 漏洩磁束低減装置
CN108401368A (zh) 一种电路板和电子设备
KR101559455B1 (ko) 용접기용 트랜스포머
CN113421754B (zh) 变压器和发电系统
CN209729701U (zh) 高压脉冲变压器的输入回路和高压脉冲变压器
US20020186116A1 (en) Inductor using printed circuit board
CN105336484A (zh) 电流互感器
KR101406233B1 (ko) 무선충전시스템에 이용되는 전자기유도장치
JPH09115743A (ja) 電力変換装置用空芯リアクトル

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19847844

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019847844

Country of ref document: EP

Effective date: 20210111

NENP Non-entry into the national phase

Ref country code: DE