CN105513781A - Coil type unit for wireless power transmission and manufacturing method of coil type unit for wireless power transmission - Google Patents
Coil type unit for wireless power transmission and manufacturing method of coil type unit for wireless power transmission Download PDFInfo
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- CN105513781A CN105513781A CN201510670835.2A CN201510670835A CN105513781A CN 105513781 A CN105513781 A CN 105513781A CN 201510670835 A CN201510670835 A CN 201510670835A CN 105513781 A CN105513781 A CN 105513781A
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- power transmission
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention relates to a coil type unit for wireless power transmission and a manufacturing method of the coil type unit for wireless power transmission. The thickness of the coil type unit for wireless power transmission can be minimized, and the coil type unit becomes thin. The wireless power transmission efficiency can be improved. The coil type unit for wireless power transmission comprises a coil substrate and a magnetic layer. The coil substrate is provided with a coil pattern. The magnetic layer is arranged on the bottom surface of the coil substrate, and the magnetic layer is formed by a first magnetic layer and a second magnetic layer. The second magnetic layer is a sintered body stacked by one or more magnetic sheets, and the first magnetic layer is arranged between the second magnetic layer and a coil piece, and the first magnetic layer and the second magnetic layer form a sintered lamination member.
Description
Require by reference and the domestic priority application comprised and foreign priority application as follows: this application claims the rights and interests of 10-2014-0137455 korean patent application submitted on October 13rd, 2014, the full content of this application is contained in the application by reference at this.
Technical field
The present invention relates to the manufacture method of a kind of coil type unit for wireless power transmission and a kind of coil type unit for wireless power transmission.
Background technology
Recently, in order to charge to the secondary cell of the inside being based upon personal digital assistant etc., have developed Wireless power transmission system.
Contactless power transmission device comprises wireless power dispensing device and reception and stores the wireless power receiving system of electric power.Such Contactless power transmission device utilizes electromagnetic induction to receive and dispatch electric power.For this reason, each Contactless power transmission device has: coil, for the formation of magnetic field; Magnetisable material, for effectively forming the magnetic-path in the magnetic field produced by coil.
Now, if coil to be fabricated to winding type (coil is arranged on the surface of magnetisable material), then coil is too thick.Recently, the loop piece being used in patterning on the top of flexible printed circuit board (FPCB) or bottom substitutes winding around to manufacture Contactless power transmission device.
Loop piece is attached to the surface of magnetisable material, and adhesive film or adherent zone are generally used for powerful attachment.But, if use adhesive film or adherent zone to be attached on magnetisable material by loop piece, then because the thickness of adhesive film or adherent zone causes whole Contactless power transmission device will become thicker, and by other techniques of needs to remove the coverlay of adherent zone.In addition, this causes production cost higher and manufacturing process is complicated.
Therefore, in order to respond new trend (proposing a kind of compact device), need research and development a kind ofly have the coil type unit for wireless power transmission of thinner thickness and have its electronic equipment.
Summary of the invention
The object of the present invention is to provide a kind of coil type unit for wireless power transmission and manufacture method thereof, the described coil type unit for wireless power transmission can make its minimizing thickness, to become slim.
Another object of the present invention is to provide a kind of coil type unit for wireless power transmission and manufacture method thereof, the described coil type unit for wireless power transmission can reduce product cost and simplify its manufacturing process.
Different object of the present invention is to provide a kind of coil type unit for wireless power transmission and manufacture method thereof, and the described coil type unit for wireless power transmission can improve the efficiency of wireless power transmission.
In order to realize described object, according to embodiments of the invention, provide a kind of coil type unit for wireless power transmission, the described coil type unit for wireless power transmission comprises: coil substrate, is formed with coil pattern; Magnetosphere, be arranged on the basal surface of coil substrate, described magnetosphere is made up of the first magnetosphere and the second magnetosphere, wherein, second magnetosphere is the stacking sintered body having one or more magnetic sheet, and the first magnetosphere is arranged between the second magnetosphere and coil substrate, to form the laminate of sintering together with the second magnetosphere.
For realizing described object, according to another embodiment of the present invention, provide a kind of coil type unit for wireless power transmission, wherein, coil substrate comprises by Magnaglo being distributed to the insulating barrier that insulating epoxy obtains.
For realizing described object, according to another embodiment of the present invention, provide a kind of manufacture method of the coil type unit for wireless power transmission, described method comprises: preparation is provided with the coil substrate of coil pattern; Prepare the second magnetosphere be made up of the laminate sintered; The first magnetosphere being in the semi-harden stage is stacked on the second magnetosphere; Coil substrate is stacked on the first magnetosphere; First magnetosphere and the second magnetosphere are sintered, to harden.
Accompanying drawing explanation
According to reference to the accompanying drawings to the description that embodiment is carried out, these and/or other aspect and the advantage of general plotting of the present invention will become obvious, and be easier to understand, in the accompanying drawings:
Fig. 1 is according to an embodiment of the invention for the decomposition diagram of the coil type unit of wireless power transmission;
Fig. 2 is the sectional view intercepted along I-I ' line of Fig. 1;
Fig. 3 is the process chart of the method that the coil type unit manufactured according to an embodiment of the invention for wireless power transmission is shown;
Fig. 4 is the process chart that the technique preparing coil substrate is according to an embodiment of the invention shown;
Fig. 5 is the process chart preparing the process of coil substrate illustrated according to another embodiment of the present invention;
Fig. 6 A to Fig. 6 C is according to an embodiment of the invention for explaining the diagram of coil substrate preparation process;
Fig. 7 is the diagram for explaining coil substrate preparation process according to another embodiment of the present invention.
Embodiment
By below in conjunction with the detailed description of carrying out during accompanying drawing and preferred embodiment, object of the present invention, specific advantages and novel feature will become more obvious.In the description, although for it should be noted that element illustrates in various figures when the element in each figure adds label, identical label indicates identical element.In addition, in the course of describing the present invention (s), by omitting the detailed description to related known technology, to avoid making theme of the present invention fuzzy.In this manual, term " first ", " second " etc. for being separated by similar element region, and do not limit described element.
Term is for explaining embodiment as used herein, and unrestricted the present invention.In whole specification, unless context clearly is pointed out in addition, otherwise singulative comprises plural form.When this use term " comprise " and/or " comprising " time, except above-mentioned assembly, step, operation and/or device, do not get rid of exist and add another assembly, step, operation and/or device.
for the coil type unit of wireless power transmission
Hereinafter, structure of the present invention and operating effect is described with reference to the accompanying drawings in detail.
Fig. 1 is according to an embodiment of the invention for the decomposition diagram of the coil type unit 100 of wireless power transmission, and Fig. 2 is the sectional view intercepted along I-I ' line of Fig. 1.In addition, the element in accompanying drawing is not necessarily proportionally drawn.Such as, in order to contribute to improving the understanding to embodiments of the invention, some elements relatives may exaggerated in accompanying drawing are in the size of other elements.
See figures.1.and.2, coil type unit 100 can comprise coil substrate 110 and magnetosphere 120.
Coil substrate 110 can comprise insulating barrier 111, the coil pattern 115 be formed on the one or both sides of insulating barrier 111, circuit unit 117 and antenna element 116.
Coil substrate 110 by insulation board (such as, printed circuit board (PCB) (PCB), ceramic wafer, preforming substrate, directly engage copper (directbondedcopper, DBC) substrate or insulating metal substrate (IMS)) form.
Especially, according to embodiments of the invention, thin and the flexible PCB (such as, film or diaphragm type printed circuit board (PCB)) with wiring pattern can be used as coil substrate 110.
In this case, the insulating barrier 111 of the coil substrate 110 shown in Fig. 2 is by following formation: be dispersed in by Magnaglo 113 on insulating epoxy 112, effectively to form the magnetic-path in the magnetic field produced by coil pattern 115.
Insulating epoxy 112 can be epoxy resin or the resin with high insulating property, but is not limited thereto, and can be any insulating material.
Ferrite composition (such as, Fe, Fe-Si, Fe-Al-Si, Fe-Ni, Fe-Co) can be used as Magnaglo 113, but be not limited thereto, the magnetic any insulating material of tool can be used.
That is, according to an embodiment of the invention for the coil type unit of wireless power transmission, the magnetic-path (this comprises Magnaglo 113 by substituting the non-magnetic filler of the such as silicon dioxide in the insulating barrier 111 of coil substrate 110) also by effectively forming coil pattern 115 improves wireless power transmission efficiency.
Coil pattern 115 can form wiring pattern on the surface at least one of coil substrate 110.The form that coil pattern 115 can be electrically connected to circuit unit 117 according to the shape of whirlpool with end is according to an embodiment of the invention formed on a surface in two surfaces of coil substrate 110.
If coil pattern 115 is formed on two surfaces of coil substrate 110, then the two ends of each coil pattern 115 can connect for forming parallel circuits.Alternatively, one end of the central authorities of coil pattern 115 can connect for forming series circuit.For this reason, guide hole (not shown) can be formed, coil pattern 115 to be electrically connected by cycle basis intralamellar part online.
Meanwhile, according to embodiments of the invention, coil pattern 115 is formed as the swirl pattern of rectangular shape usually, but is not limited thereto, and can be various example, such as, can form the whirlpool of annular or polygonal shape.
In addition, if needed, then on the top surface of coil pattern 115, insulating protective layer (such as, epoxy resin insulating layers, not shown) can also be increased in addition, to protect coil pattern not by external action.
Circuit unit 117 can be formed on a surface of coil substrate 110, to be electrically connected with coil pattern 115.In addition, various passive component or active element can be arranged on circuit unit 117 and to be electrically connected to the battery storing electric power, so that the electric power supplied by coil pattern 115 is sent to battery.
The reliable nearly coil pattern 115 of antenna element 116 is formed.Specifically, antenna pattern 116 can be formed around the edge of coil substrate 110, and coil pattern 115 can be arranged on antenna element 116 inside thus.
Similar with coil pattern 115, antenna element 116 can be formed as wiring pattern.Antenna element 116 can be applicable to NFC (near-field communication) according to an embodiment of the invention, but is not limited thereto.
Meanwhile, although illustrated the antenna element 116 of the outside being formed in coil pattern 115 in embodiment, be not limited thereto.In other words, it is inner that antenna element 116 can be arranged on coil pattern 115, and other inside and outside examples that such as two different antenna elements 116 are separately positioned on coil pattern 115 are feasible.
Coil substrate 110 is attached on a surface in the magnetosphere 120 of smooth plate shape (alternatively, sheet shape).Magnetosphere 120 is set to the magnetic-path effectively forming the magnetic field produced by coil pattern 115.For this reason, preferably: magnetosphere 120 is formed with the material that easily can produce magnetic-path.Such as, magnetosphere 120 is formed by stacking magnetic sheet (such as, ferrite sheet).
But magnetosphere 120 is not limited only to ferrite sheet, at least one in following can be used as magnetic sheet: the application of ferrite sheet, sheet metal and compound ground has metal and ferritic Homogeneous phase mixing sheet.
Now, as shown in Figure 1, magnetosphere 120 is arranged on the basal surface of coil substrate 110, and is made up of the first magnetosphere 121 and the second magnetosphere 122, and wherein, the first magnetosphere 121 is stacked on the topmost of the second magnetosphere 122.
First magnetosphere 121 can be made up of identical material with the second magnetosphere 122, but is not limited thereto.
Second magnetosphere 122 can be formed with at least one included magnetic sheet, and expects to be formed as the stacking sintered body having multiple magnetic sheet.Now, in order to the whole coil type unit 100 being used in wireless power transmission is thin, preferably: the thickness of the second magnetosphere 122 is 60 ~ 100 μm.
First magnetosphere 121 is made up of the magnetic sheet in semi-harden stage (B-stage).This semi-harden magnetic sheet remains on B-stage, this B-stage be harden completely before stage, in this stage, at room temperature or can be kept the performance that connects by heating process, and adhesion strength has been enough to attachment to adhere to.That is, by temporarily coil substrate 110 being attached on the top surface of the first magnetosphere being in the semi-harden stage, and the first magnetosphere and the second magnetosphere are attached together by curing process, coil substrate 110 and the second magnetosphere 122 adhere to by the first magnetosphere.
First magnetosphere 121 is thicker, and the second magnetosphere 122 is harder, and coil substrate 110 more can adhere to.But, in order to the whole coil type unit 100 being used in wireless power transmission is thin, preferably: the thickness of the first magnetosphere 121 is 5 ~ 30 μm.
In other words, according to an embodiment of the invention in the coil type unit 100 of wireless power transmission, by forming the first magnetosphere 121 being in the semi-harden stage, magnetosphere 120 and coil substrate 110 can be attached together becomes overall, and without the need to using adherent zone, adhesive film or any other coherent substance.
Usually, diaphragm is formed on each surface of adhesive film, to prevent the pollution of foreign substance.Therefore, between the setting stage of adhesive film, need the extra technique for removing diaphragm.Compared with using the prior art of adhesive film, because embodiments of the invention can omit the attachment of adhesive film and the removal technique of diaphragm, therefore embodiments of the invention can reduce the quantity of technique.
In addition, when not using low heat-resisting adherent zone or adhesive film, magnetosphere 120 can be attached to coil substrate 110, thus manufacture the coil type unit for wireless power transmission heat-resisting to the heat produced from coil pattern 115.
In addition, owing to magnetosphere 120 and coil substrate 110 being made to adhere to when not using 20 ~ 30 μm of thick adhesive films or adherent zone, the coil type unit for wireless power transmission of overall compact can therefore be manufactured.
for the manufacture method of the coil type unit of wireless power transmission
Fig. 3 is the process chart of the method that the coil type unit manufactured according to an embodiment of the invention for wireless power transmission is shown.
With reference to Fig. 3, the method manufactured for the coil type unit of wireless power transmission can comprise: prepare the coil substrate (S100) it being formed with coil pattern; Prepare the second magnetosphere (S200) be made up of the laminate sintered; The first magnetosphere being in the semi-harden stage is stacked on (S300) on the second magnetosphere; Coil substrate is stacked on (S400) on the first magnetosphere; First magnetosphere and the second magnetosphere are sintered, to carry out harden (S500).
In the step s 100, the coil substrate being provided with the coil pattern be formed on one or two surface of insulating barrier is manufactured.Now, various method can be used to manufacture coil substrate, with reference to Fig. 4, said method comprising the steps of: use the insulating resin comprising Magnaglo to form insulating barrier (S101); Stacking Copper thin film on the top surface and basal surface of insulating barrier is also suppressed (S102) it; On Copper thin film, patterning goes out coil to form coil pattern (S103); Form via hole (S104).
In step S101 (use comprises the insulating epoxy of Magnaglo to manufacture insulating barrier), manufacture the insulating barrier effectively forming the magnetic-path in magnetic field of coil substrate.
First, by using grinder etc. that Magnaglo made sheet and being dispersed on insulating epoxy, with the shape of formation sheet.Then, first at room temperature drying is carried out to sheet and reach 2 hours, then in drying baker, carry out drying with 80 DEG C and reach 1 hour, at 110 DEG C, finally carry out drying again reach 1 hour, to be manufactured the semi-harden stage.
Now, although insulating barrier can be epoxy resin or the resin with high insulating property, be not limited thereto.In addition, ferrite composition (such as, Fe, Fe-Si, Fe-Al-Si, Fe-Ni, Fe-Co) can be used as Magnaglo, but is not limited thereto.Any magnetic megohmite insulant can be used.
In step S102 (on the top or bottom of insulating barrier stacking Copper thin film suppress it), with reference to Fig. 6 A and Fig. 6 B, stacking Copper thin film 114 on the top or bottom of insulating barrier 111, and utilize vacuum press to make it fully harden.At this moment, maximum temperature is 230 DEG C, and maximum pressure is 2MPa.
In step S103 (formation coil pattern) and step S104 (formation via hole), with reference to Fig. 6 C, the both sides of the coil substrate of sclerosis form coil pattern, and manufactures conductive via, with the either end at the two ends of connecting coil pattern/every one end or the end connecting central authorities.Material is thus formed parallel circuits or the series circuit of the coil pattern be connected to form on the top and bottom of coil substrate.Coil pattern can be formed as comprising rectangle, circle and polygonal various swirls according to an embodiment of the invention.
In addition, manufacture the external print that also can comprise around coil pattern for the method for the coil type unit of wireless power transmission according to an embodiment of the invention to dissolve antenna element and form circuit unit in a part for coil substrate.
Meanwhile, with reference to Fig. 5, preparing coil substrate (S100) can comprise: manufacture first resin coating Copper Foil (RCC) (S110) comprising the insulating resin comprising Magnaglo; Form the 2nd RCC (S120) comprising the insulating resin comprising Magnaglo; One RCC and the 2nd RCC is suppressed (S130); Patterning goes out coil to form coil pattern (S140); Form via hole (S150).
In step S110 (manufacturing a RCC) and step S120 (manufacturing the 2nd RCC), use the insulating epoxy casting Copper Foil that 0 ~ 80 μm thick.Now, insulating epoxy forms magnetic-path effectively by comprising Magnaglo.In addition, insulating barrier can be epoxy resin or the resin with high insulating property, but is not limited thereto.In addition, ferrite composition (such as, Fe, Fe-Si, Fe-Al-Si, Fe-Ni, Fe-Co) can be used as Magnaglo, but if having magnetic property, is then not limited thereto.
In step S310 (compacting the one RCC and the 2nd RCC), a RCC and the 2nd RCC is suppressed, to manufacture double sided coil substrate.With reference to Fig. 7, by first utilizing roll-in method, the one RCC and the 2nd RCC is fed in roll squeezer to make them combine and to carry out sclerosis to them to suppress a RCC and the 2nd RCC.
In step S140 (formation coil pattern) and step S150 (formation via hole), coil pattern is formed on the top and bottom of the coil substrate of sclerosis, manufacture the via hole of conduction, with the every one end connected in two ends or the end connecting central authorities, to form parallel circuits or the series circuit of the coil pattern be connected to form on the top and bottom of coil substrate.Coil pattern can be formed as comprising rectangle, circle and polygonal various swirls according to an embodiment of the invention.
Therefore, be used in the method for the coil type unit of wireless power transmission in manufacture according to the present invention, by comprising the step preparing coil substrate 100 (comprising the Magnaglo of the non magnetic silica-filled thing replaced in insulating barrier), the coil type unit for wireless power transmission of the magnetic-path effectively forming the magnetic field produced by coil pattern can be manufactured.
Step S200 (preparing the second magnetosphere be made up of the laminate sintered) can comprise stacking multiple magnetic sheet and by suppressing and heating the step sintered magnetic sheet.
At least one as follows can be used as magnetic sheet: the application of ferrite sheet, sheet metal and compound ground has metal and ferritic uniform mixing tab.
Now, consider for wireless power transmission coil type unit thinning and form the efficiency of magnetic-path, can expect that 5 ~ 15 μm of stacking 4 to 20 layers thick magnetic sheets are thick to be formed as 60 ~ 100 μm, but be not limited thereto.
Step S300 (being stacked on the second magnetosphere by the first semi-harden magnetosphere) comprising: be dispersed in by the insulating epoxy comprising Magnaglo on the second magnetosphere; The first magnetosphere is made to be formed as the semi-harden stage by room temperature dry or heating.
First, manufacture the blending epoxy comprising Magnaglo or metal dust in epoxy resin, then blending epoxy is dispersed into the shape of film.Now, consider the thickness of the first magnetosphere, the thickness of dispersion should be 20 ~ 30 μm.Then, at room temperature drying or heating (such as, drying reaches 1 ~ 3 minute at 100 DEG C ~ 120 DEG C) can be carried out, to be formed to the semi-harden stage to the first magnetosphere.But, temperature and time for drying can be regulated based on the thickness of the weight of the content of the type of insulating epoxy, Magnaglo, metal dust and dispersion.
Step S400 (being stacked on by coil substrate on the first magnetosphere) and step S500 (sintering the first magnetosphere and the second magnetosphere) is stacking with the stage be attached to by coil substrate on a surface of magnetosphere for carrying out.
The first magnetosphere being in the semi-harden stage remains on B-stage, this B-stage be solidify completely before stage, in this stage, at room temperature or can be kept the performance that connects by heating process, and adhesion strength has been enough to attachment to adhere to.
That is, the first magnetosphere being in the semi-harden stage temporarily adheres to coil substrate, and the second magnetosphere and coil substrate is adhered to by curing process.In cure stage, maximum temperature is 230 DEG C, and maximum pressure is 2MPa.
Therefore, the method manufacturing the coil type unit being used for wireless power transmission according to an embodiment of the invention comprises: do not using in adherent zone, adhesive film or any other coherent substance situation, preparing the second magnetosphere (S200) be made up of the laminate sintered; First magnetosphere is stacked on (S300) on the second magnetosphere; Coil substrate is stacked on (S400) on the first magnetosphere; First magnetosphere and the second magnetosphere are cured (S500), thus coil substrate is attached on magnetosphere.
Usually, diaphragm is formed on each surface of adhesive film, to prevent the pollution of foreign substance.Therefore, between the setting stage of adhesive film, need the extra technique for removing diaphragm.Compared with using the prior art of adhesive film, because embodiments of the invention can omit the attachment of adhesive film and the removal technique of diaphragm, therefore embodiments of the invention can reduce the quantity of technique.
In addition, when not using low heat-resisting adherent zone or adhesive film, magnetosphere can be attached to coil substrate, thus manufacture the coil type unit for wireless power transmission heat-resisting to the heat produced from coil pattern.
In addition, owing to can make magnetosphere and coil substrate attachment when not using 20 ~ 30 μm of thick adhesive films or adherent zone, the coil type unit for wireless power transmission of overall compact can therefore be manufactured.
As mentioned above, according to an embodiment of the invention in the coil type unit of wireless power transmission, by comprising the first magnetosphere be arranged between the second magnetosphere and loop piece, the minimizing thickness of coil can be made.
In addition, advantage according to an embodiment of the invention for the coil type unit of wireless power transmission is: by comprising the coil substrate being provided with and Magnaglo being distributed to the insulating barrier that insulating epoxy obtains, improve the efficiency of wireless power transmission.
Above description illustrate the present invention.In addition, more than describe and only illustrate and describe the preferred embodiments of the present invention, but will be appreciated that, the present invention can use in other combinations various, amendment and environment, and being expressed within this inventive concept, and/or the technology of association area consistent with above-mentioned instruction or the scope of knowledge, can carry out changing and revising.Embodiment described above is also intended to explain implements the best mode of the present embodiment, and enables others skilled in the art implement embody rule of the present invention or these or other embodiment and multiple conversion thereof of the present invention needed for using.Therefore, the present invention is limited to form disclosed herein by this description unintentionally.In addition, it is intended to explain that right requires to include interchangeable embodiment.
Claims (13)
1., for a coil type unit for wireless power transmission, comprising:
Coil substrate, is formed with coil pattern;
Magnetosphere, be arranged on the basal surface of coil substrate, described magnetosphere is made up of the first magnetosphere and the second magnetosphere, wherein, second magnetosphere is the laminate of the sintering of one or more magnetic sheet, and the first magnetosphere is arranged between the second magnetosphere and coil substrate, to form the laminate of sintering together with the second magnetosphere.
2. the coil type unit for wireless power transmission according to claim 1, wherein, the first magnetosphere is by sintering the magnetic sheet being in the semi-harden stage laminate of sintering into and being formed.
3. the coil type unit for wireless power transmission according to claim 1, wherein, coil substrate comprises by Magnaglo being distributed to the insulating barrier that insulating epoxy obtains.
4. the coil type unit for wireless power transmission according to claim 1, wherein, coil pattern be formed in coil substrate according to the shape of wiring pattern at least one on the surface.
5. the coil type unit for wireless power transmission according to claim 1, wherein, coil substrate also comprises the antenna element formed near coil pattern.
6. the coil type unit for wireless power transmission according to claim 1, wherein, magnetic sheet uses and applies from by ferrite sheet, sheet metal and compound at least one selected the group be made up of metal and ferritic mixing matrix.
7. the coil type unit for wireless power transmission according to claim 1, wherein, the thickness of the first magnetosphere be 5 μm thick to 30 μm.
8. the coil type unit for wireless power transmission according to claim 1, wherein, the thickness of the second magnetosphere be 60 μm thick to 100 μm.
9. manufacture a method for the coil type unit being used for wireless power transmission, described method comprises:
Preparation is provided with the coil substrate of coil pattern;
Prepare the second magnetosphere be made up of the laminate sintered;
The first magnetosphere being in the semi-solid preparation stage is stacked on the second magnetosphere;
Coil substrate is stacked on the first magnetosphere;
First magnetosphere and the second magnetosphere are sintered, to harden.
10. manufacture according to claim 9 is used for the method for the coil type unit of wireless power transmission, and wherein, the step preparing the second magnetosphere comprises:
Stacking multiple magnetic sheet;
By suppressing and heating, magnetic sheet is sintered.
11. manufactures according to claim 9 are used for the method for the coil type unit of wireless power transmission, wherein, the step that the first semi-harden magnetosphere is stacked on the second magnetosphere are comprised:
The insulating epoxy comprising Magnaglo is coated on the first magnetosphere;
By at room temperature dry or heating, the first magnetosphere is formed to the semi-harden stage.
12. manufactures according to claim 9 are used for the method for the coil type unit of wireless power transmission, and wherein, the step for the preparation of coil substrate comprises:
Use the insulating epoxy comprising Magnaglo to form insulating barrier;
On top surface Copper thin film being stacked on insulating barrier or basal surface, and it is suppressed;
On Copper thin film, patterning goes out coil, forms coil pattern;
Form via hole.
13. manufactures according to claim 9 are used for the method for the coil type unit of wireless power transmission, and wherein, the step for the preparation of coil substrate comprises:
Form the RCC comprising the insulating barrier comprising Magnaglo;
Form the 2nd RCC comprising the insulating barrier comprising Magnaglo;
One RCC and the 2nd RCC is suppressed;
Patterning goes out coil to form coil pattern;
Form via hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0137455 | 2014-10-13 | ||
| KR1020140137455A KR102029726B1 (en) | 2014-10-13 | 2014-10-13 | Coil type unit for wireless power transmission and manufacturing method of coil type unit for wireless power transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105513781A true CN105513781A (en) | 2016-04-20 |
| CN105513781B CN105513781B (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510670835.2A Active CN105513781B (en) | 2014-10-13 | 2015-10-13 | Coil type unit and its manufacturing method for wireless power transmission |
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| KR (1) | KR102029726B1 (en) |
| CN (1) | CN105513781B (en) |
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| CN108605423A (en) * | 2016-07-11 | 2018-09-28 | 株式会社斗山 | Anneta module formation composite substrate and its manufacturing method |
| CN109818424A (en) * | 2019-01-14 | 2019-05-28 | 华南理工大学 | A kind of Stacked coil for wireless energy transfer |
| CN110676041A (en) * | 2019-09-29 | 2020-01-10 | 苏州蓝沛无线通信科技有限公司 | Assembling method of wireless charging receiving coil module |
| CN110942908A (en) * | 2019-08-14 | 2020-03-31 | 厦门钨业股份有限公司 | Manufacturing method of low-eddy-current-heating combined magnet and clamping tool |
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| CN110942908A (en) * | 2019-08-14 | 2020-03-31 | 厦门钨业股份有限公司 | Manufacturing method of low-eddy-current-heating combined magnet and clamping tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20160043293A (en) | 2016-04-21 |
| CN105513781B (en) | 2019-08-20 |
| KR102029726B1 (en) | 2019-10-10 |
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