CN104184217A - Induction coil for wireless electric energy transmission, manufacture method, and wireless charging system - Google Patents
Induction coil for wireless electric energy transmission, manufacture method, and wireless charging system Download PDFInfo
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- CN104184217A CN104184217A CN201310367677.4A CN201310367677A CN104184217A CN 104184217 A CN104184217 A CN 104184217A CN 201310367677 A CN201310367677 A CN 201310367677A CN 104184217 A CN104184217 A CN 104184217A
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Abstract
The invention belongs to the technical field of wireless electric energy transmission and provides an induction coil for wireless electric energy transmission, and aims at solving problems of large size and low transmission efficiency of an induction coil in the prior art. The induction coil comprises insulating films and conductor patterns. The conductor pattern on a same insulating film comprises a single turn or multiple turns. The conductor patterns on the insulating films are mutually overlapped in the stacked direction of the insulating films. The invention also provides a manufacture method of the induction coil for wireless electric energy transmission and a wireless charging system equipped with the induction coil. According to the induction coil, the multiple insulating films equipped with the single-turn or multi-turn conductor patterns are stacked, the conductor patterns are overlapped in the stacked direction, and magnetic fields generated by electrifying the conductor patterns are nearly overlapped. Therefore, the total magnetic field intensity is increased in direct proportion to the number of conductor pattern layers on the insulating films, and the converting efficiency between electric energy and magnetic energy is greatly improved.
Description
Technical field
The invention belongs to wireless power transmission technical field, relate in particular to a kind of induction coil for wireless power transmission and manufacture method thereof, also relate to a kind of wireless charging system with the described induction coil for wireless power transmission.
Background technology
Along with the development of electronic communication technology, increasing people uses all kinds of portable electric appts, and charging device has been proposed to more and more higher requirement, and wired charging modes exists inconvenience, has developed wireless power transmission technology thereupon.Wireless power transmission be utilize a kind of special installation by the electric energy of power supply change into can radio transmission energy, at receiving terminal, again the energy of this radio transmission is transformed back into electric energy, thereby arrives the wireless charging to power consumption equipment.
At present, according to delivery of electrical energy principle, the mode that realizes wireless power transmission mainly contains three kinds, i.e. induction, radio wave formula and resonant interaction mode.Induction wireless power transmission is by two coils are positioned on close position, when electric current is when a coil midstream movable property is given birth to corresponding magnetic field, the existence in magnetic field causes also producing in another coil electromotive force, by adjusting the variation of electric current in a coil, cause magnetic field to change, in another coil, produced electric current accordingly; Radio wave formula wireless power transmission is that application electromagnetic wave energy can pass through the principle of antenna sending and receiving, direct be used after the AC wave shape of electric wave being transformed into direct current in rectification conductor etc.; Resonant interaction formula wireless power transmission is to utilize the resonance method of electromagnetic field to carry out wireless power transmission.
Induction coil for wireless power transmission is the core component of wireless charging system, utilize the induction coil for wireless power transmission to coordinate wireless charging device by electric conductor, not connect just energy electric energy transmitting, be embodied as the object of portable electric appts charging, for example, mobile phone, panel computer, digital camera, bluetooth earphone, or be embodied as the object that other wireless devices charge.As the parts of all kinds of portable electric appts, wireless electric energy transmission device must possess small size, high efficiency feature; Under same current strength, if the magnetic field producing is larger, the efficiency of electromagnetic conversion is just higher, or under same volume, allows the electric current that passes through higher, and the efficiency of electromagnetic conversion is also higher.Traditional induction coil for wireless power transmission adopts following two kinds of modes to be made conventionally, and the first is to adopt metal wire coiling to form, and has volume greatly and inconvenient shortcoming is installed; The second is to adopt the mode of printed wiring board lamination to be made, be subject to the restriction of process for making to cause interior each circle magnetic field position that coil produces of induction coil overlapping poor, the total magnetic field of coil is lower than the magnetic field of single-turn circular coil and the product of the number of turn, the magnetic field that each circuit produces can not efficient coupling, causes existing the problems such as the large and efficiency of transmission of energy loss is low.Visible, these two kinds of modes cannot accomplish to make induction coil volume little and improve the conversion efficiency of magnetic field to electric current and electric current to magnetic field.
Summary of the invention
The object of the present invention is to provide a kind of induction coil for wireless power transmission, the stacking setting of dielectric film sheet that employing has conductive pattern forms, and is intended to solve in prior art the problem that induction coil volume is large and efficiency of transmission is low for wireless power transmission.
The present invention realizes like this, a kind of induction coil for wireless power transmission, comprise the insulation diaphragm of at least two-layer stacking setting and adopt electric conducting material to be formed at the conductive pattern of membrane surface of insulating described in each, described conductor-pattern structure on each layer of described insulation diaphragm is identical and adopt series system and/or parallel way to be electrically connected to, the described conductive pattern being positioned on same described insulation diaphragm consists of single turn or multiturn, and the described conductive pattern on each layer of described insulation diaphragm is overlapped on the stacking direction of described insulation diaphragm.
Further, being positioned at conductive pattern described in each circle on same described insulation diaphragm is circle, ellipse, polygon or other arbitrary shapes with opening.
Further, described electric conducting material is metal, metal alloy, metallic compound or organic conductive material.
Further, the described induction coil for wireless power transmission also comprises the connecting portion that connects each layer of described conductive pattern, each layer of described insulation diaphragm is provided with connecting hole, described connecting hole is positioned at initiating terminal and the end of conductive pattern described in every circle, and described connecting portion is electrically connected to each layer of conductive pattern on described insulation diaphragm through described connecting hole.
The manufacture method that another object of the present invention is to provide kind of the above-mentioned induction coil for wireless power transmission, comprises the following steps:
Polylith insulation diaphragm is provided;
It is identical and form conductive pattern by single turn or multiturn that the membrane surface that insulate described in each is made respectively structure;
To respectively be manufactured with the stacking setting of dielectric film sheet of described conductive pattern, the described conductive pattern on each layer of described insulation diaphragm is overlapped on the stacking direction of described insulation diaphragm; And
Adopt series system and/or parallel way to be electrically connected each layer of described conductive pattern on described insulation diaphragm.
Further, adopt series system to be electrically connected to insulate described in each step of the described conductive pattern on diaphragm to comprise:
At the membrane surface that insulate described in ground floor, make the first conductive pattern, comprising: adopt print process that electric conducting material is printed in to described insulation membrane surface to form described the first conductive pattern consisting of single turn or multiturn; Adopt the mode of electroless copper plating at described the first conductive pattern surface deposition one bronze medal layer; Adopt copper-plated mode to plate a copper plate on described copper layer; Utilize dielectric ink to cover described copper plate and the initiating terminal of the first conductive pattern described in each circle or end are windowed to processing with exposed described copper plate;
At the membrane surface that insulate described in the second layer, make the second conductive pattern, comprising: adopt print process that described electric conducting material is printed in to described insulation membrane surface to form described second conductive pattern identical with described the first conductor-pattern structure; Initiating terminal on the second conductive pattern described in each circle or end and initiating terminal on the corresponding circle of described the first conductive pattern or the exposed described copper plate of end are connected to form the first connecting portion; Adopt the mode of electroless copper plating at described the first connecting portion surface and described the second conductive pattern surface deposition one bronze medal layer; Adopt copper-plated mode to plate a copper plate on described copper layer; Utilize described dielectric ink to cover described copper plate and the initiating terminal of described the second conductive pattern or end are windowed to processing with exposed described copper plate; And
By above-mentioned steps, make the conductive pattern that multilayer is connected in series mutually.
Further, adopt parallel way to be electrically connected to insulate described in each step of the described conductive pattern on diaphragm to comprise:
At the membrane surface that insulate described in ground floor, make the first conductive pattern, comprising: adopt print process that electric conducting material is printed in to described insulation membrane surface to form the first conductive pattern consisting of single turn or multiturn; Adopt the mode of electroless copper plating at described the first conductive pattern surface deposition one bronze medal layer; Adopt the mode of electro-coppering to plate a copper plate on described copper layer; Utilize dielectric ink to cover described copper plate and the initiating terminal of the first conductive pattern described in each circle and end are windowed to processing with exposed described copper plate;
At the membrane surface that insulate described in the second layer, make the second conductive pattern, comprising: adopt print process that described electric conducting material is printed in to described insulation membrane surface to form described second conductive pattern identical with described the first conductor-pattern structure; The initiating terminal of the second conductive pattern described in each circle described copper plate exposed with initiating terminal on the corresponding circle of described the first conductive pattern is connected to form the 3rd connecting portion and the end of described the second conductive pattern described copper plate exposed with the end of described the first conductive pattern is connected to form the 4th connecting portion; Adopt the mode of electroless copper plating at described the 3rd, the 4th connecting portion surface and described the second conductive pattern surface deposition one bronze medal layer; Adopt copper-plated mode to plate a copper plate on described copper layer; Utilize described dielectric ink to cover described copper plate and the initiating terminal of described the second conductive pattern and end are windowed to processing with exposed described copper plate; And
By above-mentioned steps, make the conductive pattern that multilayer is connected in parallel mutually.
Further, adopting print process that described electric conducting material is printed in to described insulation membrane surface is substituted by following methods: adopt sedimentation that electric conducting material is splashed to described insulation membrane surface, adopts spraying process that described electric conducting material is sprayed to described insulation membrane surface or adopts mull technique that described electric conducting material is adhered to described insulation membrane surface.
Further, described electric conducting material is substituted by electrically conductive ink or heavy copper catalyst.
Another object of the present invention is to provide a kind of wireless charging system, comprise the electric energy transfer device of external charging and the electric energy receiving equipment of needs charging, it is characterized in that, described electric energy transfer device comprises transmitting coil, described electric energy receiving equipment comprises and the receiving coil of described transmitting coil coupling generation current, and described transmitting coil has identical structure and is the above-mentioned induction coil for wireless power transmission with described receiving coil.
Induction coil for wireless power transmission provided by the invention by forming single turn or multiturn conductive pattern on insulation diaphragm, and there is the stacking setting of dielectric film sheet of conductive pattern and each circle conductive pattern on each layer of insulation diaphragm adopts series system and/or connected mode in parallel to be electrically connected to by a plurality of, each conductive pattern is after passing through electric current, produce corresponding magnetic field, and there is overlapping region in Distribution of Magnetic Field, the effect that occurs magnetic field intensity and the proportional stack of the insulation diaphragm upper conductor pattern number of plies in overlapping region, magnetic field, delivery of electrical energy efficiency promotes greatly, and, adopt the stacking setting of dielectric film sheet to be convenient to obtain the wireless electric energy transmission device that filming is processed, subtracted the volume of small wireless electric energy transmitting device.
Accompanying drawing explanation
Fig. 1 is same layer of schematic diagram that single turn conductive pattern is connected in series of the induction coil for wireless power transmission that the embodiment of the present invention provides.
Fig. 2 is same layer of schematic diagram that single turn conductive pattern is connected in parallel of the induction coil for wireless power transmission that the embodiment of the present invention provides.
Fig. 3 is same layer of schematic diagram that multiturn conductive pattern is connected in series of the induction coil for wireless power transmission that the embodiment of the present invention provides.
Fig. 4 is same layer of schematic diagram that multiturn conductive pattern is connected in parallel of the induction coil for wireless power transmission that the embodiment of the present invention provides.
Fig. 5 is the partial enlarged drawing that the induction coil for wireless power transmission that provides of the embodiment of the present invention connects.
Fig. 6 is the frame structure schematic diagram of the wireless charging system of embodiment of the present invention raising.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Please refer to Fig. 1 to Fig. 5, the induction coil 10 for wireless power transmission providing in the specific embodiment of the invention comprises the insulation diaphragm 12 of at least two-layer stacking setting and adopts electric conducting material to be formed at the conductive pattern 16 on described insulation diaphragm 12 surfaces, conductive pattern 16 structures on each layer of described insulation diaphragm 12 are identical and adopt series system and/or parallel way to be electrically connected to, the described conductive pattern 16 being positioned on same insulation diaphragm 12 consists of single turn or multiturn, described conductive pattern 16 on each layer of insulation diaphragm 12 is overlapped on the stacking direction of described insulation diaphragm 12.Induction coil 10 for wireless power transmission provided by the invention is for wireless charging device, adopt the 12 stacking settings of multilayer insulation diaphragm to form to obtain and be convenient to the wireless electric energy transmission device that filming is processed, reduce volume, and adopt the conductive pattern being formed by single turn or multiturn 16 being formed on each layer of insulation diaphragm 12 to be electrically connected to by series system and/or parallel way, each circle conductive pattern 16 on each layer of insulation diaphragm 12 is overlapped on stacking direction, each circle conductive pattern 16 on each layer of insulation diaphragm 12 produces electromagnetic coupling phenomena mutually, on each layer of insulation diaphragm 12 there is Distribution of Magnetic Field overlapping region in overlapped conductive pattern 16, magnetic field intensity and the proportional stack of conductive pattern 16 number of plies of insulating on diaphragm 12, thereby improve delivery of electrical energy efficiency.Preferably, described insulation diaphragm 12 can be polyester film, polyimide film, polyurethane film, epoxy resin thin film, epoxy resin fiberglass thin slice, polyester epoxy glass fiber mixed film, polytetrafluoroethylene film or aromatic polyamides film etc.
Referring to Fig. 1 and Fig. 4, in the present embodiment, initiating terminal 160 and the end 165 of each circle conductive pattern 16 on same layer insulation diaphragm 12 are spaced from each other setting, when adopting series system to connect each conductive pattern 16, each circle conductive pattern 16 that is about to same stacking direction joins end to end and initiating terminal 160 and the end 165 of each circle conductive pattern 16 on top layer or bottom insulation diaphragm 12 is electrically connected by electric conducting material, particularly, for each circle conductive pattern 16 on same stacking direction, the initiating terminal of ground floor conductive pattern 16 160 or end 165 are electrically connected to end 165 or the initiating terminal 160 of second layer conductive pattern 16, the initiating terminal 160 of second layer conductive pattern 16 or end 165 are electrically connected to end 165 or the initiating terminal 160 of the 3rd layer of conductive pattern 16, by that analogy, complete after each circle conductive pattern 16 connections of same stacking direction, connect each circle conductive pattern 16 on top layer or bottom insulation diaphragm 12, the initiating terminal 160 of the end 165 second circle conductive pattern 16 adjacent with same layer of the outermost turn conductive pattern 16 on top layer insulating film sheet 12 is connected, the insulate initiating terminal 160 of end 165 three circle conductive pattern 16 adjacent with same layer of the second circle conductive pattern 16 of diaphragm 12 of the bottom is connected, by that analogy, the conductive pattern 16 on all insulation diaphragms 12 is connected in series, referring to Fig. 2 and Fig. 5, when adopting parallel way to connect each conductive pattern 16, the initiating terminal 160 that is about to each circle conductive pattern 16 on same stacking direction is electrically connected to and end 165 is electrically connected to, by the initiating terminal 160 of each circle conductive pattern 16 on top layer insulating film sheet 12 or end 165 is electrically connected to and bottom insulation diaphragm 12 on end 165 or the initiating terminal 160 of each circle conductive pattern 16 be electrically connected to.
In other embodiments, conductive pattern 16 on each layer of insulation diaphragm 12 can adopt the mode being connected with tandem compound in parallel to realize electrical connection, for example, for by the stacking induction coil 10 for wireless power transmission forming of three-layer insulated diaphragm 12, insulate conductive pattern 16 head and the tail of the conductive pattern 16 of diaphragm 12 and second layer insulation diaphragm 12 of ground floor are connected to realize and are connected, then that the insulation diaphragm 12 of this series connection is in parallel with the conductive pattern 16 of three-layer insulated diaphragm 12.
In the present embodiment, the stacking number of plies of described insulation diaphragm 12 is 2～18 layers, and more preferably, this number of plies is 6-14 layer.In radiating circuit and receiving circuit, the inductance value of coil is also had to coupling requirement, conventionally need to pass through the number of plies of insulation diaphragm 12 and the number of turn of the number of turn 16 of calculative determination coil.When the insulation diaphragm 12 stacking number of plies, inductance value can be too low very little time, and when the stacking number of plies of insulation diaphragm 12 is too many, the corresponding inductance value producing is more; If the requirement of the inductance value of coil and transmitting or receiving circuit does not match, can make whole circuit cisco unity malfunction, the delivery of electrical energy efficiency for the induction coil 10 of wireless power transmission also can reduce.
Please refer to Fig. 1 to Fig. 5, in the present embodiment, the described conductive pattern 16 being positioned on same described insulation diaphragm 12 consists of single turn or multiturn.Particularly, please refer to Fig. 1 and Fig. 2, when the conductive pattern 16 on every layer of insulation diaphragm 12 is single turn, should be stacking and forms and each circle conductive pattern 16 overlaps on the stacking direction of diaphragm 12 that insulate by multilayer insulation diaphragm 12 for induction coil 10 of wireless power transmission, in delivery of electrical energy process, no matter the mode of being connected in series and/or the mode that is connected in parallel, the electric current flowing in each conductive pattern 16 all flows along identical direction or same trajectories, and as far as possible flat between stack layer, thereby reduce significantly the spacing between each layer of conductive pattern 16, the magnetic field that each layer of conductive pattern 16 produces afterwards in energising approaches overlapping, thereby the proportional stack of 16 number of plies of the conductive pattern on total magnetic intensity and insulation diaphragm 12, delivery of electrical energy efficiency promotes greatly, under same electric current, the magnetic energy area distribution that electric energy in conductive pattern 16 produces approaches overlapping, this coil electric energy is got a promotion to the conversion efficiency of magnetic energy, otherwise, under same magnetic energy distribution situation, this coil also can obtain maximum magnetic energy to energy conversion efficiency, electromagnetic induction coupling effect during the induction coil 10 for wireless power transmission of this structure is best, and the magnetic field of having reduced because producing after existing spacing to cause in conductive pattern 16 between each circle to switch on not exclusively overlaps, the phenomenon of cancelling out each other.Please refer to Fig. 4 and Fig. 5, when the conductive pattern 16 on every layer of insulation diaphragm 12 consists of multiturn, should be stacking and forms and the corresponding circle of each layer of insulation diaphragm 12 upper conductor pattern 16 overlaps on the stacking direction of diaphragm 12 that insulate by multilayer insulation diaphragm 12 for induction coil 10 of wireless power transmission, that is to say, the outermost turn conductive pattern of each layer of insulation diaphragm 12 upper conductor pattern 16 overlaps, interior circle conductive pattern overlaps and the corresponding coincidence of each circle conductive pattern between outermost turn and interior circle, in delivery of electrical energy process, for the same circle conductive pattern 16 in each layer of insulation diaphragm 12, no matter be series system or parallel way, adjacent two circle conductive patterns 16, the sense of current is identical, the Distribution of Magnetic Field that each circle conductive pattern 16 produces is different, wherein, Distribution of Magnetic Field overlapping region, the proportional stack of the number of plies of magnetic field intensity and conductive pattern 16, can obtain higher delivery of electrical energy efficiency, preferably, the number of turn of the conductive pattern 16 on each layer of insulation diaphragm 12 is 2～20 circles, preferred, around the number of turn, be 2～16 circles.The size of the conductive pattern 16 on each layer of insulation diaphragm 12 is 20～150 millimeters, take round conductor pattern 16 as example, and its size refers to the maximum gauge of conductive pattern 16, and more preferably, this size is 80～120 millimeters.
Please refer to Fig. 1 to Fig. 5, further, be positioned at described in each circle on same described insulation diaphragm 12 conductive pattern 16 for thering is circle, ellipse, polygon or other arbitrary shapes of opening.Each circle conductive pattern 16 can be the shape arbitrarily with opening designing as required, be that every circle conductive pattern 16 all has initiating terminal 160 and end 165, between initiating terminal 160 and end 165, form opening, the size of this opening is much smaller than the size of each circle conductive pattern 16.
Please refer to Fig. 1 to Fig. 5, further, described electric conducting material is metal, metal alloy, metallic compound or organic conductive material.More preferably, described metal is copper, aluminium, zinc, silver, gold, platinum, tin, iron, nickel, and institute's organic conductive material is conducting polymer.Electric conducting material is formed to described insulation diaphragm 12 surfaces and to obtain, has certain thickness conductive pattern, this thickness is determined according to actual demand.Each layer of insulation diaphragm 12 adopts insulating binder to engage when stacking or physics stack manner is realized.
Please refer to Fig. 1 to Fig. 5, further, the described induction coil for wireless power transmission also comprises the connecting portion 18 that connects each layer of described conductive pattern 16, each layer of described flexible insulation diaphragm 12 is provided with connecting hole 121, described connecting hole 121 is positioned at initiating terminal 160 and the end 165 of conductive pattern 16 described in every circle, and described connecting portion 18 is electrically connected to each layer of conductive pattern 16 on described insulation diaphragm 12 through described connecting hole 121 according to above-mentioned connected mode.By connecting hole 121 is set so that the electric connection between each layer of conductive pattern 16.
Please refer to Fig. 1 to 5, the manufacture method of the induction coil 10 for wireless power transmission that the specific embodiment of the invention provides comprises the following steps:
Polylith insulation diaphragm 12 is provided;
Diaphragm 12 surfaces of insulating described in each make respectively structure conductive pattern 16 identical and that consist of single turn or multiturn;
To respectively be manufactured with the stacking setting of insulation diaphragm 12 of described conductive pattern 16, the described conductive pattern 16 on each layer of described insulation diaphragm 12 is overlapped on the stacking direction of described insulation diaphragm 12; And adopt series connection and/or parallel way to be electrically connected each layer of described conductive pattern 16 on described insulation diaphragm 12.
This manufacture method for the induction coil 10 of wireless power transmission is by making on insulation diaphragm 12 surfaces the conductive pattern 16 consisting of single turn or multiturn, the insulation diaphragm 12 that is provided with conductive pattern 16 is carried out to stacking setting and the conductive pattern 16 on each layer of insulation diaphragm 12 is connected and/or is connected in parallel, to obtain the induction coil 10 for wireless power transmission of said structure, this manufacture method is simple, and described conductive pattern 16 is set to improve delivery of electrical energy efficiency by stacking, delivery of electrical energy efficiency can be along with the proportional stack of the number of plies of insulation diaphragm 12 upper conductor patterns 16.Preferably, described flexible insulation diaphragm 12 can be polyester film, polyimide film, polyurethane film, epoxy resin thin film, epoxy resin fiberglass thin slice, polyester epoxy glass fiber mixed film, polytetrafluoroethylene film or aromatic polyamides film etc., to effectively reduce the volume for the induction coil 10 of wireless power transmission.
Please refer to Fig. 1, Fig. 3 and Fig. 5, further, adopt series system to be electrically connected to insulate described in each step of the described conductive pattern 16 on diaphragm 12 to comprise:
On diaphragm 12 surfaces of insulating described in ground floor, make the first conductive pattern 16a, comprising: adopt print process that electric conducting material is printed in to described insulation diaphragm 12 surfaces to form the first conductive pattern 16a consisting of single turn or multiturn; Adopt the mode of electroless copper plating at described the first conductive pattern 16a surface deposition one bronze medal layer; Adopt copper-plated mode on described copper layer, to plate a copper plate to thicken described copper layer; Utilize dielectric ink to cover described copper plate and the initiating terminal 160a of the first conductive pattern 16a described in each circle or end 165a are windowed to processing with exposed described copper plate;
On diaphragm 12 surfaces of insulating described in the second layer, make described the second conductive pattern 16b, comprising: adopt print process that described electric conducting material is printed in to described insulation diaphragm 12 surfaces to form the second conductive pattern 16b consisting of single turn or multiturn; The initiating terminal 160b of the second conductive pattern 16b described in each circle or end 165b and initiating terminal 160a on the corresponding circle of described the first conductive pattern 16a or the exposed described copper plate of end 165a are connected to form the first connecting portion 18a(as shown in Figure 5); Adopt the mode of electroless copper plating at described the first connecting portion 18a surface and described the second conductive pattern 16b surface deposition one bronze medal layer; Adopt copper-plated mode on described copper layer, to plate a copper plate to thicken described copper layer; Utilize described dielectric ink to cover described copper plate and the initiating terminal 160b of described the second conductive pattern 16b or end 165b are windowed to processing with exposed described copper plate; And
By above-mentioned steps, make the conductive pattern 16 that multilayer is connected in series mutually.
The initiating terminal of each circle conductive pattern 16 on each layer of insulation diaphragm 12 or end are windowed to processing to obtain exposed copper plate, and by the end of same circle conductive pattern 16 on this exposed copper plate and adjacent insulation diaphragm 12 or initiating terminal overlap joint, and initiating terminal and the end of each circle conductive pattern 16 on top layer or bottom insulation diaphragm 12 are electrically connected.The coil on the stacking setting of three-layer insulated diaphragm 12 and each layer insulation diaphragm 12 with three circle conductive patterns 16 of take is example, the initiating terminal 160a of each circle conductive pattern 16a on top layer insulating film sheet 12a and end 165a are windowed and processed to obtain exposed copper plate, the end 165b of upper each circle conductive pattern 16b of insulating film of intermediate layer sheet 12b is stacked on the exposed copper plate of initiating terminal 160a of the upper corresponding circle conductive pattern 16a of top layer insulating film sheet 12a, and by follow-up electroless copper plating, the processing such as electro-coppering and covering dielectric ink, the copper layer of each circle conductive pattern 16a and the copper layer of intermediate layer each circle conductive pattern 16b of top layer are closely combined, similarly, the initiating terminal 160b of each circle conductive pattern 16b on insulating film of intermediate layer sheet 12b is windowed and processed to obtain exposed copper plate, the insulate end 165c of upper each circle conductive pattern 16c of diaphragm 12c of the bottom is stacked on the exposed copper plate of initiating terminal 160b of the upper corresponding circle conductive pattern 16b of insulating film of intermediate layer sheet 12b, and by processing such as follow-up electroless copper plating, electro-coppering and covering dielectric inks, the copper layer of each circle conductive pattern 16b in intermediate layer and the copper layer of each circle conductive pattern of bottom 16c are closely combined, adopt electroless copper plating, electro-coppering and cover the techniques such as dielectric ink by the end 165a of outermost turn conductive pattern 16a and the initiating terminal 160a of middle circle conductive pattern 16a electric connection on top layer insulating film sheet 12a, similarly, adopt electroless copper plating, electro-coppering and cover the initiating terminal 160c electric connection with interior circle conductive pattern 16c by the end 165c of circle conductive pattern 16c in the middle of the bottom of the techniques such as dielectric ink, like this, form integral conductors pattern 16, guarantee that this conductive pattern 16 is fully electrically connected.
Please refer to Fig. 2, Fig. 4 and Fig. 5, further, adopt parallel way to be electrically connected to insulate described in each step of the described conductive pattern 16 on diaphragm to comprise:
On diaphragm 12 surfaces of insulating described in ground floor, make the first conductive pattern 16a, comprising: adopt print process that electric conducting material is printed in to described insulation diaphragm 12 surfaces to form the first conductive pattern 16a consisting of single turn or multiturn; Adopt the mode of electroless copper plating at described the first conductive pattern 16a surface deposition one bronze medal layer; Adopt copper-plated mode on described copper layer, to plate a copper plate to thicken described copper layer; Utilize dielectric ink to cover described copper plate and the initiating terminal 160a of the first conductive pattern 16a described in each circle and end 165a are windowed to processing with exposed described copper plate;
On diaphragm 12 surfaces of insulating described in the second layer, make the second conductive pattern 16b, comprising: adopt print process that described electric conducting material is printed in to described insulation diaphragm 12 surfaces to form the second conductive pattern 16b identical with described the first conductive pattern 16a structure; The initiating terminal 160b of the second conductive pattern 16b described in each circle described copper plate exposed with initiating terminal 160a on the corresponding circle of described the first conductive pattern 16a is connected to form the 3rd connecting portion 18b and the end 165b of described the second conductive pattern 16b described copper plate exposed with the end 165a of described the first conductive pattern 16a is connected to form the 4th connecting portion 18c; Adopt the mode of electroless copper plating at described the 3rd connecting portion 18b, the 4th connecting portion 18c surface and described the second conductive pattern 16b surface deposition one bronze medal layer (as shown in Figure 5); Adopt copper-plated mode to plate a copper plate on described copper layer; Utilize described dielectric ink to cover described copper plate and the initiating terminal 160b of described the second conductive pattern 16b and end 165b are windowed to processing with exposed described copper plate; And
By above-mentioned steps, make the conductive pattern 16 that multilayer is connected in parallel mutually.
The initiating terminal 160 of each circle conductive pattern 16 of each layer of insulation diaphragm 12 and end 165 are windowed to processing to obtain exposed copper plate, and the initiating terminal 160 of conductive pattern 16 of corresponding circle on each layer of insulation diaphragm 12 is stacked and connected and end 165 stacks connection, and by follow-up electroless copper plating, electro-coppering and cover the processing such as dielectric ink, by the initiating terminal 160 of each circle conductive pattern 16 on top layer insulating film sheet 12 or end 165 is electrically connected to and bottom insulation diaphragm 12 on end 160 or the initiating terminal 165 of each circle conductive pattern 16 be electrically connected to.Form integral conductors pattern 16, guarantee that this conductive pattern 16 is fully electrically connected.
The manufacture method of the above-mentioned induction coil 10 for wireless power transmission is also included in the initiating terminal 160 of conductive pattern 16 and/or the step of end 165 processing through holes of each layer of insulation diaphragm 12, so that connecting portion 18 is fully electrically connected to the initiating terminal of each layer of conductive pattern 16 160 and/or end 165 through corresponding connecting hole 121.
Please refer to Fig. 1 to Fig. 5, further, adopting print process that described electric conducting material is printed in to described insulation diaphragm 12 surfaces can be substituted by following methods: adopt sedimentation that electric conducting material is splashed to described insulation diaphragm 12 surfaces, adopts spraying process that described electric conducting material is sprayed to described insulation diaphragm 12 surfaces or adopts mull technique that described electric conducting material is adhered to described insulation diaphragm 12 surfaces.
Further, described electric conducting material can be substituted by electrically conductive ink or heavy copper catalyst.Above-mentioned dielectric ink can be substituted by diaphragm, and the copper in above-mentioned electroless copper plating and electro-coppering step can be by metal substitutes such as zinc, aluminium, silver.
Please refer to Fig. 6, the wireless charging system providing in the specific embodiment of the invention comprises the electric energy transfer device 20 of external charging and the electric energy receiving equipment 30 of needs charging, described electric energy transfer device 20 comprises transmitting coil 240, described electric energy receiving equipment 30 comprises and the receiving coil 320 of described transmitting coil 240 coupling generation currents, and described transmitting coil 240 has identical structure and is the above-mentioned induction coil for wireless power transmission with described receiving coil 320.Particularly, described electric energy transfer device 20 comprises power supply unit 22 and electric energy transmitter unit 24, described power supply unit 22 connects external power source 40 and for providing electric current to described electric energy transmitter unit 24, described electric energy transmitter unit 24 is electrically connected to and is included in the transmitting coil 240 of working under the current drives of described power supply unit 22 with described power supply unit 22, described electric energy receiving equipment 30 comprises electric energy receiving element 32, current conversion unit 34 and energy storage unit 36, described electric energy receiving element 32 is with 24 wireless connections of electric energy transmitter unit and comprise the receiving coil 320 that produces alternating current with described transmitting coil 240 couplings, described current conversion unit 34 is connected with electric energy receiving element 32 and is converted to direct current for the described alternating current producing that in real time described transmitting coil 240 and described receiving coil 320 is coupled, described energy storage unit 36 is connected with described electric energy conversion unit and for direct current described in real-time storage, described transmitting coil 240 has identical structure with described receiving coil 320 and is the above-mentioned induction coil 10 for wireless power transmission.Between electric energy transfer device 20 in this wireless charging system and described electric energy receiving equipment 30, (for example adopt non-contacting mode, every empty or remote) charge, or adopt contact (pad-board type) to charge, and by between the receiving coil 320 in the transmitting coil 240 in electric energy transfer device 20 and described electric energy receiving equipment 30 because current lead-through produces electromagnetic induction to be coupled, by external power source 40 transfer to electric energy receive arrange in to charge.
Preferably, this electric energy receiving equipment 30 can be mobile phone, audio player (for example, MP3, MP4, MP5), palmtop PC (Personal Digital Assistant, PDA), notebook electric energy, dull and stereotyped electric energy, digital camera, video camera, mobile electron game machine, Portable medical instrument, robot, remote-control cleaner, small-sized electric vehicle, Wireless Keyboard and the power consumption equipment such as mouse, automatic razor, but be not limited to this.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the induction coil for wireless power transmission, it is characterized in that, comprise the insulation diaphragm of at least two-layer stacking setting and adopt electric conducting material to be formed at the conductive pattern of membrane surface of insulating described in each, described conductor-pattern structure on each layer of described insulation diaphragm is identical and adopt series system and/or parallel way to be electrically connected to, the described conductive pattern being positioned on same described insulation diaphragm consists of single turn or multiturn, and the described conductive pattern on each layer of described insulation diaphragm is overlapped on the stacking direction of described insulation diaphragm.
2. the induction coil for wireless power transmission as claimed in claim 1, is characterized in that, being positioned at conductive pattern described in each circle on same described insulation diaphragm is circle, ellipse, polygon or other arbitrary shapes with opening.
3. the induction coil for wireless power transmission as claimed in claim 1, is characterized in that, described electric conducting material is metal, metal alloy, metallic compound or organic conductive material.
4. the induction coil for wireless power transmission as described in claims 1 to 3 any one, it is characterized in that, also comprise the connecting portion that connects each layer of described conductive pattern, each layer of described insulation diaphragm is provided with connecting hole, described connecting hole is positioned at initiating terminal and the end of conductive pattern described in every circle, and described connecting portion is electrically connected to each layer of conductive pattern on described insulation diaphragm through described connecting hole.
5. a manufacture method for the induction coil for wireless power transmission as claimed in claim 1, is characterized in that, comprises the following steps:
Polylith insulation diaphragm is provided;
It is identical and form conductive pattern by single turn or multiturn that the membrane surface that insulate described in each is made respectively structure;
To respectively be manufactured with the stacking setting of dielectric film sheet of described conductive pattern, the described conductive pattern on each layer of described insulation diaphragm is overlapped on the stacking direction of described insulation diaphragm; And
Adopt series system and/or parallel way to be electrically connected each layer of described conductive pattern on described insulation diaphragm.
6. the manufacture method of the induction coil for wireless power transmission as claimed in claim 5, is characterized in that, adopts series system to be electrically connected to insulate described in each step of the described conductive pattern on diaphragm to comprise:
At the membrane surface that insulate described in ground floor, make the first conductive pattern, comprising: adopt print process that electric conducting material is printed in to described insulation membrane surface to form described the first conductive pattern consisting of single turn or multiturn; Adopt the mode of electroless copper plating at described the first conductive pattern surface deposition one bronze medal layer; Adopt copper-plated mode to plate a copper plate on described copper layer; Utilize dielectric ink to cover described copper plate and the initiating terminal of the first conductive pattern described in each circle or end are windowed to processing with exposed described copper plate;
At the membrane surface that insulate described in the second layer, make the second conductive pattern, comprising: adopt print process that described electric conducting material is printed in to described insulation membrane surface to form described second conductive pattern identical with described the first conductor-pattern structure; Initiating terminal on the second conductive pattern described in each circle or end and initiating terminal on the corresponding circle of described the first conductive pattern or the exposed described copper plate of end are connected to form the first connecting portion; Adopt the mode of electroless copper plating at described the first connecting portion surface and described the second conductive pattern surface deposition one bronze medal layer; Adopt copper-plated mode to plate a copper plate on described copper layer; Utilize described dielectric ink to cover described copper plate and the initiating terminal of described the second conductive pattern or end are windowed to processing with exposed described copper plate; And
By above-mentioned steps, make the conductive pattern that multilayer is connected in series mutually.
7. the manufacture method of the induction coil for wireless power transmission as claimed in claim 5, is characterized in that, adopts parallel way to be electrically connected to insulate described in each step of the described conductive pattern on diaphragm to comprise:
At the membrane surface that insulate described in ground floor, make the first conductive pattern, comprising: adopt print process that electric conducting material is printed in to described insulation membrane surface to form the first conductive pattern consisting of single turn or multiturn; Adopt the mode of electroless copper plating at described the first conductive pattern surface deposition one bronze medal layer; Adopt the mode of electro-coppering to plate a copper plate on described copper layer; Utilize dielectric ink to cover described copper plate and the initiating terminal of the first conductive pattern described in each circle and end are windowed to processing with exposed described copper plate;
At the membrane surface that insulate described in the second layer, make the second conductive pattern, comprising: adopt print process that described electric conducting material is printed in to described insulation membrane surface to form described second conductive pattern identical with described the first conductor-pattern structure; The initiating terminal of the second conductive pattern described in each circle described copper plate exposed with initiating terminal on the corresponding circle of described the first conductive pattern is connected to form the 3rd connecting portion and the end of described the second conductive pattern described copper plate exposed with the end of described the first conductive pattern is connected to form the 4th connecting portion; Adopt the mode of electroless copper plating at described the 3rd, the 4th connecting portion surface and described the second conductive pattern surface deposition one bronze medal layer; Adopt copper-plated mode to plate a copper plate on described copper layer; Utilize described dielectric ink to cover described copper plate and the initiating terminal of described the second conductive pattern and end are windowed to processing with exposed described copper plate; And
By above-mentioned steps, make the conductive pattern that multilayer is connected in parallel mutually.
8. the manufacture method of the induction coil for wireless power transmission as described in claim 6 or 7, it is characterized in that, adopt print process that described electric conducting material is printed in to described insulation membrane surface and substituted by following methods: adopt sedimentation that electric conducting material is splashed to described insulation membrane surface, adopts spraying process that described electric conducting material is sprayed to described insulation membrane surface or adopts mull technique that described electric conducting material is adhered to described insulation membrane surface.
9. the manufacture method of the induction coil for wireless power transmission as claimed in claim 8, is characterized in that, described electric conducting material is substituted by electrically conductive ink or heavy copper catalyst.
10. a wireless charging system, comprise the electric energy transfer device of external charging and the electric energy receiving equipment of needs charging, it is characterized in that, described electric energy transfer device comprises transmitting coil, described electric energy receiving equipment comprises and the receiving coil of described transmitting coil coupling generation current, and described transmitting coil has identical structure and is the induction coil for wireless power transmission as described in claim 1 to 4 any one with described receiving coil.
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| CN201310367677.4A CN104184217B (en) | 2013-08-21 | 2013-08-21 | Induction coil and manufacture method, wireless charging system for wireless power transmission |
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| CN201310367677.4A CN104184217B (en) | 2013-08-21 | 2013-08-21 | Induction coil and manufacture method, wireless charging system for wireless power transmission |
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