CN109148109A - A kind of low-loss FPC loop construction - Google Patents
A kind of low-loss FPC loop construction Download PDFInfo
- Publication number
- CN109148109A CN109148109A CN201810811995.8A CN201810811995A CN109148109A CN 109148109 A CN109148109 A CN 109148109A CN 201810811995 A CN201810811995 A CN 201810811995A CN 109148109 A CN109148109 A CN 109148109A
- Authority
- CN
- China
- Prior art keywords
- fpc
- loss
- coil
- copper foil
- low
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F2027/2857—Coil formed from wound foil conductor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a kind of low-loss FPC loop construction, including coil, by copper foil, gap is wound the coil in the plane.The beneficial effects of the present invention are: both having guaranteed that coil thickness did not increased, the efficiency of transmission of coil is increased substantially again, reduces thermal losses.
Description
Technical field
The present invention relates to mobile phone manufacturing field, specifically a kind of low-loss FPC loop construction.
Background technique
The miniature electrics consumer goods such as traditional mobile phone are charged using the mode of wired connection.Wired charging is wanted
It asks and is attached by dedicated conducting wire, and the smart electronics such as mobile phone product can also carry out information transmitting by the conducting wire, not
There is motive person to be easy to that illegal software is implanted into mobile phone when connecting charging by conducting wire, hidden trouble is caused to information security.
In order to overcome this problem, preferable method is the conductor connections that thoroughly eliminate danger using wireless charging.Wireless charging
The current main technical schemes of technology include electromagnetic induction, magnetic resonance, radio wave and four kinds of field coupling, wherein electromagnetic induction and
Magnetic resonance is current two big mainstream technology routes.The principle of electromagnetic induction charged is similar to transformer, and charging panel is each with receiving end
There are a charge coil and magnetic core, efficient wireless charging can be realized in charging panel after being aligned with receiving end；The original of magnetic resonance
Reason is that the transmission of energy is realized by resonance using charging panel and receiving end under consistent resonance frequency.Magnetic induction at present without
Line charging scheme realizes application in the brands mobile phone such as Samsung, Sony, Google, Nokia, apple.Chinese patent literature
CN106130133A discloses " Wireless charging coil module and its electronic product " on November 16th, 2016, belongs to electronic product
The technical solution in field both includes resin enclosure and charge coil；The resin enclosure is wrapped in outside the charge coil；
The both ends of the charge coil are electrically connected with conductive feed point, and the conduction feed point is set to outside the resin enclosure；The technology
The applicant of scheme declares, since resin enclosure is wrapped in outside charge coil, charge coil will be fixed by resin enclosure, that is, charges
The case where edge tilting can not occur in coil, when Wireless charging coil module of the present invention is mounted in electronic product,
Charge coil will not influence the normal use of charge function because edge tilts, and provide guarantee for the use of user.For this
For the prior art, coil is that sub-thread enameled wire is individually wound, and the winding of coil be related to product quality and at
This important link.For the coil of wireless charging, the enameled wire of winding is thicker, and heat loss is smaller, mobile phone charging when
Local pyrexia control is better.But it is constrained to product size, enameled wire is thinner, more can control the size of entire coil, in this way
The more conducively expansion of the components' placement of interiors of products and new functional module.This is solved to contradiction, it is necessary to improve existing
The structure of end-coil is received, to meet both sides demand.
Summary of the invention
Based on problem above, the present invention provides a kind of low-loss FPC loop construction, has not only guaranteed that coil thickness did not increased, but also
The efficiency of transmission of coil is increased substantially, thermal losses is reduced.
In order to realize goal of the invention, the present invention adopts the following technical scheme: a kind of low-loss FPC loop construction, including line
Circle, gap is wound in the plane by copper foil for the coil.
The low-loss FPC loop construction of this programme design, is changed to copper foil, the mode of winding for traditional sub-thread enameled wire
Also it is changed to gap winding in the plane.Since the electric conductivity of copper foil is good, sufficiently thin copper foil can meet line
The conductive of circle requires, and advantageously reduces thermal losses；It is helpful to control product thickness since the thickness of copper foil is small.
Preferably, further including FPC；The copper foil is two, is separately fixed at the two sides of FPC, and two copper foils
Wherein one end is electrically connected, and the other end is connect with peripheral circuit respectively.This programme has used FPC, and copper foil is two, is set respectively
It sets on the two sides of FPC.Wherein one end of two copper foils is electrically connected, and the other end is connect with peripheral circuit respectively.Such design,
Two copper foils can be laid out on the same FPC, being equivalent to makes unilateral coil turn multiplication.Traditionally, if necessary to increase
One times of the number of turns, needs separately to increase FPC and copper foil, and the design of this programme reduces a FPC, makes the entirety of product
Thickness has obtained effective control.
Preferably, being additionally provided with two leads being electrically connected respectively with peripheral circuit two-stage；The inner end of two copper foils is logical
The interior via hole electrical connection of perforation FPC is crossed, wherein the outboard end of a copper foil is electrically connected with a lead, the outside of another copper foil
It holds and is electrically connected with another lead by penetrating through the outer via hole of FPC.Realize the two sides FPC there are many modes of electrical connection, we
Case selection is the via hole that perforation is arranged on FPC.Wherein interior via hole is located on the inside of coil, connects the inner end of two copper foils, outside
Via hole is located at the outside of coil, and the outboard end of one of coil and a lead are connected, then is electrically connected to by lead
Peripheral circuit.The advantage of via hole connection type is to design very small, can effectively control small product size；It can be used
High-Speed Automatic bonding machine processing, can improve manufacture efficiency.
Preferably, lead can also be made of copper foil.It can be with the consistency of thickness of coil in this way on thickness.
Preferably, the end that the lead is connect with peripheral circuit is equipped with pad.Pad can help pad to possess
Better welding effect facilitates the rapid welding of High-Speed Automatic bonding machine.
Preferably, vertical profile is non-touching at least two to the copper foil along its length in addition to end.By copper foil
The vertical profile along its length of the main part in addition to end, form at least two non-touching narrow copper foils, electric current can be made
One point be it is more, flowed in each narrow copper foil, so that realizing reduces the purpose of eddy-current loss that FPC coil generates in high frequency.
Preferably, being covered with protective film outside the surface of FPC.The outer protective film of FPC can preferably protect the copper of lower section
Foil prevents total from phenomena such as short circuit, open circuit occur.
In conclusion the beneficial effects of the present invention are: both having guaranteed that coil thickness does not increase, and increased substantially coil again
Efficiency of transmission reduces thermal losses.
Detailed description of the invention
Fig. 1 is positive structure schematic of the invention.
Fig. 2 is reverse structure schematic of the invention.
Wherein: 1 coil, 2 copper foils, 3FPC, 4 leads, via hole in 5,6 outer via holes, 7 pads.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
Embodiment as shown in Figure 1 and Figure 2 is a kind of low-loss FPC loop construction.The low-loss FPC coil knot of this example
Structure is fixed with coil 1 equipped with rectangular FPC3 on the upper surface of FPC.The coil of this example, to be fixed on the positive and negative FPC
Two copper foils 2 are constituted.Winding of the copper foil on the surface FPC is gap, it is ensured that is insulated between circle and circle.The inner end of two copper foils
Interior via hole 5 by penetrating through FPC is electrically connected.The outboard end of positive copper foil is electrically connected with a lead 4, outside the copper foil of reverse side
Side is electrically connected another lead by the outer via hole 6 of perforation FPC.This two leads are also to be made with copper foil, are extended upwardly to
It more than FPC upper side edge, and is all designed in end and has pad 7, then realized and be electrically connected with peripheral circuit by pad.In this example,
In addition to end needs to fix with via hole or pad, the copper foil of copper foil or lead either in coil is all indulged along its length
It cuts open as non-touching two narrow copper foils, and also ensures that insulation between two narrow copper foils.It is covered with protective film outside the surface of FPC,
The copper foil protection of lower section is fixed up.
The low-loss FPC loop construction of this example, electric current flow through the coil copper of the side FPC after a wherein lead access
Foil reaches copper foil inner end, and the inner end of the other side copper foil of FPC is reached using interior via hole, passes through the coil of the other side
Copper foil is finally flowed out from the lead of the side, completes electric current overall process.When flowing through copper foil, electric current one can be made to divide to be more, each
It is flowed in a narrow copper foil, to realize the purpose for reducing the eddy-current loss that FPC coil generates in high frequency.The low-loss of this example
FPC loop construction can increase substantially the efficiency of transmission of coil under the premise of guaranteeing that coil thickness is not increased, reduce heat waste
Consumption.
Claims (6)
1. a kind of low-loss FPC loop construction, including coil (1), characterized in that the coil by copper foil (2) in the plane between
Gap is wound.
2. a kind of low-loss FPC loop construction according to claim 1, characterized in that further include FPC(3)；The copper foil
Be two, be separately fixed at the two sides of FPC, and wherein one end electrical connection of two copper foils, the other end respectively with peripheral circuit
Connection.
3. a kind of low-loss FPC loop construction according to claim 2, characterized in that be additionally provided with two respectively with periphery
The lead (4) of circuit two-stage electrical connection；The inner end of two copper foils is electrically connected by the interior via hole (5) of perforation FPC, wherein one
The outboard end of copper foil is electrically connected with a lead, and the outboard end of another copper foil passes through the outer mistake of perforation FPC with another lead
Hole (6) electrical connection.
4. a kind of low-loss FPC loop construction according to claim 3, characterized in that the lead and peripheral circuit connect
The end connect is equipped with pad (7).
5. a kind of low-loss FPC loop construction according to claim 1 or 2 or 3 or 4, characterized in that in addition to end,
Vertical profile is non-touching at least two to the copper foil along its length.
6. a kind of low-loss FPC loop construction according to claim 1 or 2 or 3 or 4, characterized in that outside the surface of FPC
It is covered with protective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811995.8A CN109148109A (en) | 2018-07-23 | 2018-07-23 | A kind of low-loss FPC loop construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811995.8A CN109148109A (en) | 2018-07-23 | 2018-07-23 | A kind of low-loss FPC loop construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109148109A true CN109148109A (en) | 2019-01-04 |
Family
ID=64801424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810811995.8A Pending CN109148109A (en) | 2018-07-23 | 2018-07-23 | A kind of low-loss FPC loop construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109148109A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112309674A (en) * | 2019-07-31 | 2021-02-02 | 株式会社村田制作所 | Inductor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810062A (en) * | 2007-09-28 | 2010-08-18 | 捷通国际有限公司 | Printed circuit board coil |
| CN102087909A (en) * | 2009-12-08 | 2011-06-08 | 上海华虹Nec电子有限公司 | Multi-path laminated inductor with inner path and outer path current compensation function |
-
2018
- 2018-07-23 CN CN201810811995.8A patent/CN109148109A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810062A (en) * | 2007-09-28 | 2010-08-18 | 捷通国际有限公司 | Printed circuit board coil |
| CN102087909A (en) * | 2009-12-08 | 2011-06-08 | 上海华虹Nec电子有限公司 | Multi-path laminated inductor with inner path and outer path current compensation function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112309674A (en) * | 2019-07-31 | 2021-02-02 | 株式会社村田制作所 | Inductor |
| CN112309674B (en) * | 2019-07-31 | 2022-05-06 | 株式会社村田制作所 | Inductor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11120937B2 (en) | High current, low equivalent series resistance printed circuit board coil for power transfer application | |
| CN201689765U (en) | Transformer | |
| CN109036796A (en) | A kind of two-sided wireless charging transmitting terminal mould group | |
| CN102272869B (en) | High frequency transformers | |
| CN109818138A (en) | Antenna structure | |
| CN106685100A (en) | Multiplex device of near field communication (NFC) coil and wireless charging coil | |
| US11551848B2 (en) | Planar transformer and switching power adapter | |
| CN109888881A (en) | A kind of relay system applied to wireless charging | |
| CN208580650U (en) | A kind of wireless charging receiving terminal coiled wire-wound coil structure | |
| CN109148109A (en) | A kind of low-loss FPC loop construction | |
| JP7233893B2 (en) | radio equipment | |
| CN207883483U (en) | A kind of magnetic flakes based on amorphous or nanocrystalline strip | |
| CN207124107U (en) | A kind of wireless electric energy transmission device with electromagnet shield effect | |
| CN206098680U (en) | NFC subassembly that metal -back winding former block group becomes based on electronic equipment | |
| CN105071024A (en) | Antenna system of mobile terminal | |
| CN109411211A (en) | A kind of Wireless charging coil and a kind of production method of Wireless charging coil | |
| CN211428000U (en) | High-frequency transformer for switching power supply and switching power supply | |
| JP7222675B2 (en) | radio equipment | |
| CN102360854A (en) | Planar transformer with U-shaped magnetic cores | |
| CN109148110B (en) | FPC structure capable of reducing alternating current resistance | |
| CN108599396B (en) | Ultra-thin wide-frequency medium-and-long-distance wireless power transmission coil | |
| CN106373733B (en) | A kind of adjustable flat surface transformer and its manufacture method | |
| JP2015053439A (en) | Non-contact power transmission device | |
| CN208112337U (en) | Wireless charging device | |
| CN209488218U (en) | A kind of detachable shell of built-in wireless charging transmission module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |