CN203910505U - Non-contact charging module, electronic equipment and non-contact charging equipment - Google Patents
Non-contact charging module, electronic equipment and non-contact charging equipment Download PDFInfo
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- CN203910505U CN203910505U CN201290000798.4U CN201290000798U CN203910505U CN 203910505 U CN203910505 U CN 203910505U CN 201290000798 U CN201290000798 U CN 201290000798U CN 203910505 U CN203910505 U CN 203910505U
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- charge module
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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
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
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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
- H01F27/2871—Pancake coils
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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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
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- 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
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- 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
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- 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
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- 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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
The utility model discloses a non-contact charging module, electronic equipment and non-contact charging equipment. By the utility model, high power transmission efficiency can be maintained with maintenance of a value (L) of a coil part, and heat of the coil part can be prevented from being conducted to a magnetic sheet. The non-contact charging module is characterized by comprising a primary coil (21a) formed by a lead in a winding way and a thin magnetic sheet (51) provided with a surface carrying the primary coil (21a), wherein the side of the thin magnetic sheet (51), corresponding to the primary coil (21a) is provided with a plurality of recessed parts (53); and the bottoms of the plurality of recessed parts are separated from the secondary side coil (21a).
Description
Technical field
The utility model relates to non-contact charge module, electronic equipment and the non-contact charge equipment that comprises planar coil portion and magnetic flakes.
Background technology
In recent years, more utilized and can to main equipment, carry out the technology of non-contact charge by enough chargers.In this technology, in charger side configuration transmitter side non-contact charge module, in main equipment side configuration receiver side non-contact charge module, and by making two intermodules produce electromagnetic induction from charger side direction main equipment side transferring electric power.And, suitable for movable terminal equipment etc. has also been proposed as the scheme of aforementioned body equipment.
The main equipments such as this mobile terminal device or charger are required slimming and miniaturization.In order to respond this requirement, can consider as patent documentation 1 to possess planar coil portion and magnetic flakes as transmitter side non-contact charge module or receiver side non-contact charge module.In addition, the magnetic flakes of also manufacturing like that, forming just like patent documentation 2 in magnetic flakes in the past.
Prior art document
Patent documentation
[patent documentation 1] TOHKEMY 2006-42519 communique
No. 4400509 communique of [patent documentation 2] Japanese Patent
Utility model content
This non-contact charge module is owing to utilizing electromagnetic induction phenomenon to carry out electric power transfer, so at the coil portion of 1 side non-contact charge module (transmitter side non-contact charge module) and the coil portion of 2 side non-contact charge modules (receiver side non-contact charge module), easily there is heating.That is, a variety of causes such as impact due to the position alignment between 1 side non-contact charge module and 2 side non-contact charge modules or distance, metal around, are difficult to realize 100% efficiency of transmission.And itself has resistive component coil portion.Due to these reasons, the heating of coil portion is unavoidable problem.
On the other hand, magnetic flakes possesses temperature characterisitic.That is, due to the heating of coil portion, magnetic flakes is heated, and the characteristic of magnetic flakes changes.If the characteristic of magnetic flakes changes, the L value of coil portion changes, and as its result, the resonance frequency of non-contact charge module changes.If the resonance frequency of the resonance frequency of 1 side non-contact charge module and 2 side non-contact charge modules is inconsistent, power transmission efficiency correspondingly reduces sometimes.That is, need to suppress the variation of 1 side non-contact charge module and 2 side non-contact charge module both sides' resonance frequency.In addition, generally speaking, 2 times side non-contact charge module is accommodated in small-sized mobile terminal, therefore compares with 1 side non-contact charge module, more easily makes magnetic flakes heat up.
In addition, generally speaking, carrying out the required time of non-contact charge is a few hours, needs the long period, thus the heating of coil portion to be transmitted to time of magnetic flakes also long.
The purpose of this utility model is to provide non-contact charge module, electronic equipment and non-contact charge equipment, and its L value by keeping coil portion maintains higher power transmission efficiency, and the heating that can suppress coil portion is simultaneously transmitted to magnetic flakes.And even if provide for a long time and charge thus, power transmission efficiency is higher and stable non-contact charge module, electronic equipment and non-contact charge equipment also.
In order to address the above problem, non-contact charge module of the present utility model comprises: the planar coil portion that spooling wire forms; And magnetic flakes, it possesses for loading the face of described planar coil portion, described magnetic flakes has a plurality of recesses on the face of the described planar coil of mounting portion, the bottom of described a plurality of recesses and described planar coil partly from.
According to the utility model, the non-contact charge module that can be achieved as follows and the non-contact charge equipment that has used this non-contact charge module, this non-contact charge module maintains higher power transmission efficiency by the L value of keeping coil portion, and by reducing the wire of coil portion and the contact area of magnetic flakes, the heating that can suppress coil portion is transmitted to magnetic flakes.Thus, even if can realize for a long time, charge, power transmission efficiency is higher and stable non-contact charge module and the non-contact charge equipment that has used this non-contact charge module also.
Accompanying drawing explanation
Fig. 1 means the block diagram of the non-contact power transmitting device of the utility model execution mode.
Fig. 2 means the figure of structure of the non-contact charger of the utility model execution mode.
Fig. 3 means the figure of 1 side non-contact charge module of the utility model execution mode.
Fig. 4 means the details drawing of 1 side non-contact charge module of the utility model execution mode.
Fig. 5 means the figure of structure of the mobile terminal device of the utility model execution mode.
Fig. 6 means the figure of 2 side non-contact charge modules of the utility model execution mode.
Fig. 7 means the details drawing of 2 side non-contact charge modules of the utility model execution mode.
Fig. 8 means the schematic diagram of the magnetic flakes of the utility model execution mode.
Fig. 9 mean the utility model execution mode non-contact charge module sectional view and in magnetic flakes, do not form the figure of comparison of sectional view of the non-contact charge module of recess.
Figure 10 means the figure of temperature characterisitic of the magnetic flakes of the utility model execution mode.
Label declaration
21a:1 lateral coil
21b:2 lateral coil
211,212: inner side part
22a, 23a: terminal (1 side)
22b, 23b: terminal (2 sides)
30a: magnet (1 side)
30b: magnet (2 sides)
31a: par (1 side)
31b: par (2 sides)
32a: central part (1 side)
32b: central part (2 sides)
33a: straight line recess (1 side)
33b: straight line recess (2 sides)
34a: slit (1 side)
34b: slit (2 sides)
41:1 side non-contact charge module (transmitter side non-contact charge module)
42:2 side non-contact charge module (receiver side non-contact charge module)
51: magnetic flakes (1 side)
52: magnetic flakes (2 sides)
53: recess
71: electric power input part
72: rectification circuit
82: electric power efferent
200: electronic equipment
300: source power supply
301: socket
400: non-contact charger
401: plug
402: face
501: on table
520: mobile terminal
521: liquid crystal panel
522: action button
523: substrate
524: battery pack (electric power maintaining part)
525,526: housing
Embodiment
(execution mode)
Below, use accompanying drawing to explain execution mode of the present utility model.
[about non-contact charger systems]
Fig. 1 means the block diagram of the non-contact power transmitting device of the utility model execution mode.
Non-contact power transmitting device is by 1 side non-contact charge module 41(transmitter side non-contact charge module) and 2 side non-contact charge module 42(receiver side non-contact charge modules) form, utilize electromagnetic induction effect from 1 side non-contact charge module 41 to 2 side non-contact charge module 42 transferring electric powers.This non-contact power transmitting device is for the electric power transfer below about 5W.In addition, the frequency of electric power transfer is about 110～205kHz.1 time side non-contact charge module 41 is for example equipped on charger, and 2 side non-contact charge modules 42 are such as being equipped on mobile phone, digital camera, PC etc.
1 time side non-contact charge module 41 possesses lateral coil 21a, magnetic flakes 51, resonant capacitor (not shown) and electric power input part 71 1 time.Electric power input part 71 is connected in as the source power supply 300 of external power source and accepts the power supply about 100～240V, and is transformed to rated current A(direct current 12V, 1A) and be provided to lateral coil 21a 1 time.1 lateral coil 21a generation and its shape, the number of turn and the corresponding magnetic field of electric current being provided.Resonant capacitor is connected with 1 lateral coil 21a, according to and 1 lateral coil 21a between relation, determine the resonance frequency in the magnetic field producing from 1 lateral coil 21a.With this resonance frequency, produce the electromagnetic induction effect from 41 pairs of 2 side non-contact charge modules 42 of 1 side non-contact charge module.
On the other hand, 2 side non-contact charge modules 42 consist of 2 lateral coil 21b, magnetic flakes 52, resonant capacitor (not shown), rectification circuit 72 and electric power efferents 82.2 times lateral coil 21b accepts from the magnetic field of 1 lateral coil 21a generation, and utilizes electromagnetic induction effect that this magnetic field is transformed to rated current B, by rectification circuit 72 and electric power efferent 82, outputs to the outside of 2 side non-contact charge modules 42.72 pairs of the rectification circuits rated current B as alternating current carries out rectification and is transformed to direct current is rated current C(direct current 5V, 1.5A).In addition, electric power efferent 82 is outside efferents of 2 side non-contact charge modules 42, by this electric power efferent 82, to the electronic equipment 200 being connected with 2 side non-contact charge modules 42, powers.
[about non-contact charger and 1 side non-contact charge module]
Next, the situation that 1 side non-contact charge module 41 is equipped on to non-contact charger is described.
Fig. 2 means the figure of structure of the non-contact charger of the utility model execution mode.In addition, the non-contact charger shown in Fig. 2 is the parts can see that inner mode represents.
Non-contact charger 400 utilizes electromagnetic induction to be used for sending electric power, in the inside that forms the shell of its external packing, has side non-contact charge module 41 1 time.
Non-contact charger 400 has plug 401, and this plug 401 is for being inserted into the socket 301 of the source power supply 300 being arranged within doors or outside room.By this plug 401 is inserted into socket 301, non-contact charger 400 can be accepted power supply from source power supply 300.
Non-contact charger 400 be arranged at table upper 501,1 side non-contact charge modules 41 be disposed at non-contact charger 400 a side contrary with desktop side face 402 near.And, the primary flat of 1 lateral coil 21a in 1 side non-contact charge module 41 is configured to parallel with the face 402 of the side contrary with desktop side of non-contact charger 400.By formation like this, the electric power that can guarantee to be equipped with the electronic equipment of 2 side non-contact charge modules 42 receives operating area.In addition, non-contact charger 400 also can be arranged at wall, in this case, 1 side non-contact charge module 41 be configured in non-contact charger 400 a side contrary with side surface side face near.
In addition, sometimes 1 side non-contact charge module 41 have for and 2 side non-contact charge modules 42 between the magnet 30a of position alignment.In this case, magnet 30a is configured in the hollow bulb of the middle section that is positioned at 1 lateral coil 21a.
Next, side non-contact charge module 41 is described 1 time.
Fig. 3 means the figure of 1 side non-contact charge module of the utility model execution mode, represents the situation that 1 lateral coil is circular coil.In addition,, in Fig. 3, with the conglobate circular coil of spooling, be illustrated, but also can be the square coil that spooling becomes essentially rectangular.The detailed content of 1 the side non-contact charge module the following describes in addition, is applicable to 2 side non-contact charge modules substantially.Explain in the back the difference of 2 side non-contact charge modules and 1 side non-contact charge module.
1 time side non-contact charge module 41 possesses: 1 the lateral coil 21a that becomes whirlpool shape to form wire spooling; And the magnetic flakes 51 being oppositely arranged with the face of 1 lateral coil 21a.
As shown in Figure 3,1 lateral coil 21a possesses: in the mode of drawing in the plane whirlpool at 1 lateral coil 21a that radially spooling electric conductor forms; And terminal 22a, the 23a as the electric current supply portion that are arranged at the two ends of coil.That is, terminal 22a, the 23a as electric current supply portion is provided to lateral coil 21a 1 time by the electric current that from external power source is source power supply 300.1 lateral coil 21a is spooling wire and obtaining abreast in the plane, and the face being formed by coil is called to coil surface.In addition, thickness direction refers to the stacked direction of 1 lateral coil 21a and magnetic flakes 51.
In addition, magnetic flakes 51 is by forming with lower member: the par 31a of 1 lateral coil 21a of mounting; Be positioned at central part 32a central part, suitable with the hollow region of 1 lateral coil 21a of par 31a; And the straight line recess 33a of a part for the lead-out wire of 1 lateral coil 21a of insertion.With respect to par 31a, central part 32a can be any one in protuberance shape, even shape, recess shapes and shape of through holes.If protuberance shape, can strengthen the magnetic flux of 1 lateral coil 21a.If smooth, easily manufacture and easily load lateral coil 21a 1 time, and can obtain the balance of the impact of the magnet for position alignment described later and the L value of 1 lateral coil 21a.To explain below recess shapes and through hole.
In 1 side non-contact charge module 41 of present embodiment, the internal diameter that 1 lateral coil 21a is 20mm from diameter starts outside spooling, and external diameter is 30mm.That is, 1 lateral coil 21a spooling circlewise.In addition, it is circular that 1 lateral coil 21a also can spooling, can also become polygon by spooling.That is, can be also roughly square, roughly rectangle or other shapes, be in polygonal situation, its bight can have R angle (curve part).
In addition, by the mode spooling wire with slot milling between wire, can make the stray capacitance between topping wire and lower layer conductor little, the AC impedance of 1 lateral coil 21a is suppressed for little.In addition, by not spacing of wire is carried out to spooling with being close to, can suppress the thickness of 1 lateral coil 21a.
In addition, sometimes 1 side non-contact charge module 41 have for and 2 side non-contact charge modules 42 between the magnet 30a of position alignment.According to standard (WPC), stipulated that this magnet is that circle, diameter are that 15.5mm is with inferior.Magnet 30a is coin, must be configured to its center consistent with the spooling central shaft of 1 lateral coil 21a.This is in order to alleviate the impact of magnet 30a on 1 lateral coil 21a.
That is, as the method for position alignment, for example, can enumerate following method.For example have and on the charging face of charger, form protuberance, on the electronic equipment of 2 sides, form recess and its chimeric etc. (in shape) physically carried out to the method for enforceable position alignment.There is in addition following method: by magnet being equipped on at least one party in 1 side and 2 sides, thereby magnet is each other attracted each other or a side magnet and the opposing party's magnetic flakes attract each other and carry out position alignment.By 1 side, detect the coil position of 2 sides, make the coil of 1 side automatically move to the position of the coil of 2 sides.Also have by possess a plurality of coils in charger, thereby make method that mobile device can both charge in any position of the charging face of charger etc.
Like this, for the position alignment of the coil of 1 side (charged side) non-contact charge module and 2 sides (charged side) non-contact charge module, can enumerate the whole bag of tricks, but can be divided into the method for using the method for magnet and not using magnet.And, if 1 side (charged side) non-contact charge module, by be configured to can be adapted to 2 sides (charged side) non-contact charge module of using 2 sides (charged side) non-contact charge module of magnet and not using magnet the two, can independently charge with the type of 2 sides (charged side) non-contact charge module, improve convenience.Similarly, if 2 sides (charged side) non-contact charge module, by be configured to can be adapted to 1 side (charged side) non-contact charge module of using 1 side (charged side) non-contact charge module of magnet and not using magnet both, can independently charge with the type of 1 side (charged side) non-contact charge module, improve convenience.; the pattern of wants is; by electromagnetic induction, be that the opposing party's non-contact charge module is carried out in the non-contact charge module of electric power transfer with the object that carries out electric power transfer; and the opposing party's non-contact charge module between while carrying out position alignment; by the magnet that utilizes the opposing party's non-contact charge module to possess, carry out the first scheme of position alignment and do not utilize magnet to carry out this two schemes of alternative plan of position alignment; all can carry out position alignment with the opposing party's non-contact charge module, and can carry out electric power transfer.
In the situation that 1 side non-contact charge module 41 has magnet 30a, as the first method of distributed magnet 30a, there is the method at the upper surface distributed magnet 30a of the central part 32a of magnetic flakes 51.In addition, as the second method of distributed magnet 30a, there is distributed magnet 30a to replace the method for the central part 32a of magnetic flakes 51.In the second method, because magnet 30a is configured in the hollow region of 1 lateral coil 21a, so can be by 41 miniaturizations of 1 side non-contact charge module.
In addition,, in the situation that magnet is not used in to the position alignment of 1 side non-contact charge module 41 and 2 side non-contact charge modules 42, do not need the magnet 30a shown in Fig. 3.
The impact power transmission efficiency of non-contact charge module being brought at this explanation magnet.Generally speaking, at least one party in 1 side non-contact charge module and 2 side non-contact charge modules, magnet is arranged in the through hole of built-in coil.Thus, can make magnet and magnet or magnet and magnetic flakes 51 try one's best approaching in, can make the coil of 1 side and 2 sides approach.Magnet is circular, and in this case, the diameter of magnet is less than the inner width of 1 lateral coil 21a.In the present embodiment, the diameter of magnet is about the about 10mm～20mm of 15.5mm(), thickness is about 1.5mm～2mm.In addition, used neodium magnet, intensity is about left and right from 75mT to 150mT.In the present embodiment, because the interval between the coil of 1 side non-contact charge module and the coil of 2 side non-contact charge modules is 2mm～5mm left and right, so utilize the magnet of this degree just enough to carry out position alignment.
When having produced magnetic flux for electric power transfer between 1 lateral coil and 2 lateral coils, if betwixt or periphery there is magnet, magnetic flux is avoided magnet and is extended.Or the magnetic flux among perforation magnet causes vortex flow or heating among magnet, thereby bring loss.And then, due to by magnet configuration near magnetic flakes, thereby cause near the permeability of magnetic flakes magnet to reduce.Therefore the magnet 30a that, 1 side non-contact charge module 41 possesses causes 1 lateral coil 21a and 2 lateral coil 21b both sides' L value to reduce.Consequently, the efficiency of transmission between non-contact charge module reduces.
Fig. 4 means the details drawing of 1 side non-contact charge module of the utility model execution mode.Fig. 4 A is the vertical view of 1 side non-contact charge module, and Fig. 4 B is the A-A sectional view of 1 side non-contact charge module in Fig. 4 A.Fig. 4 C is the B-B sectional view of 1 side non-contact charge module in Fig. 4 A being provided with in the situation of straight line recess.Fig. 4 D is the B-B sectional view of 1 side non-contact charge module in Fig. 4 A being provided with in the situation of slit.In addition, Fig. 4 A and Fig. 4 B represent not possess the situation of magnet 30a.In addition,, in the situation that possessing magnet, possesses the magnet 30a being represented by dotted lines.
In order to realize the slimming of the non-contact charger 400 that 1 side non-contact charge module 41 has been installed, by 1 lateral coil 21a from being positioned at the coiling beginning of central area till the part of terminal 23a is made as 2 layers at thickness direction, remaining region is made as to 1 layer.Now, by topping wire and lower layer conductor are carried out to spooling in mutual slot milling ground mode, thereby can make the stray capacitance between topping wire and lower layer conductor diminish, the AC impedance of 1 lateral coil 21a is suppressed for little.
In addition, in the situation that conducting wire stack is made 1 lateral coil 21a expand to the thickness direction of 1 side non-contact charge module 41, by increasing by the number of turn of 1 lateral coil 21a, can increase the electric current that flows through 1 lateral coil 21a.Wire is being carried out when stacked, by not spacing between the wire of the wire He lower floor that makes on upper strata, be close to ground spooling, thereby can suppress the thickness of 1 lateral coil 21a, and can increase the electric current that flows through 1 lateral coil 21a.
In addition, in the present embodiment, use the wire of the rounded shape of cross sectional shape to form lateral coil 21a 1 time, still, the wire using can be also the square-shaped wire of cross sectional shape.In the situation that use the wire of the rounded shape of cross sectional shape, between adjacent wire, produce gap, thereby the stray capacitance between wire diminishes, the AC impedance of 1 lateral coil 21a can be suppressed for little.
In addition, compared with 1 lateral coil 21a is become to 2 layers at thickness direction spooling, spooling becomes 1 layer of AC impedance step-down of 1 lateral coil 21a, can improve efficiency of transmission.This is because if wire spooling is become to 2 layers, produce stray capacitance between topping wire and lower layer conductor.Therefore, with it, 1 whole spooling of lateral coil 21a is become to 2 layers, not as far as possible many part spoolings are become to 1 layer.In addition, by spooling, become 1 layer, can be by 41 slimmings of 1 side non-contact charge module.In addition,, consist of planar coil portion 2 two wires in the situation that, at terminal 22a, 23a part, utilizes scolding tin etc. that two wires are electrically connected to, so two wires also can form as a heavy gauge wire.Can be arranged in parallel two wires of spooling with coil surface, also can vertically arrange two wires of spooling with coil surface.That is, parallel with coil surface in the situation that, with plane, two wires be take to identical center as axle spooling, on radial direction, a wire is clamped by another root wire.Like this, two wires are partly electrically connected to and make it as a wire, bring into play function at terminal 22a, 23a, thus, even identical sectional area also can suppress thickness.That is to say, for example, by preparing two wires that diameter is 0.18mm, can access the sectional area that diameter is the wire of 0.25mm.Therefore, an if wire that diameter is 0.25mm, the thickness of 1 circle of 1 lateral coil 21a is that the width of the radial direction of 0.25mm, 1 lateral coil 21a is 0.25mm, but, if two wires that diameter is 0.18mm, to become the width of 0.18mm, radial direction be 0.36mm to the thickness of 1 circle of 1 lateral coil 21a.In addition, thickness direction is the stacked direction of 1 lateral coil 21a and magnetic flakes 51.In addition, also can just make the part of central side of 1 lateral coil 21a overlapping on thickness direction is 2 layers, and remaining Outboard Sections is 1 layer.In addition, perpendicular to coil surface in the situation that, the thickness of non-contact charge module increases, but the sectional area of wire in fact increases, thereby can make the electric current that flows through 1 lateral coil 21a increase, and also can easily guarantee the sufficient number of turn.In addition, in the present embodiment, by the wire that is about 0.18mm～0.35mm, form lateral coil 21a 1 time, especially, for 1 lateral coil 21a of 1 side non-contact charge module 41, the wire of 0.25mm～0.35mm is preferred.
In addition, because the AC impedance of 1 lateral coil 21a is low, thereby prevented the loss in 1 lateral coil 21a and improved L value, thus, can improve the power transmission efficiency of 1 the side non-contact charge module 41 that depends on L value.
In addition, in the present embodiment, 1 time lateral coil 21a forms ring-type (toroidal).The shape of 1 lateral coil 21a is not limited to ring-type (toroidal), can be also Elliptical toroidal, rectangular-shaped, polygon-shaped.If consider the position alignment of 1 side non-contact charge module 41 and 2 side non-contact charge modules 42, the shape of 1 lateral coil 21a is preferably ring-type (toroidal).This be because in the situation that 1 lateral coil 11a be shaped as ring-type (toroidal), can in wider scope, carry out the sending and receiving of electric power, easily carry out the position alignment of 1 lateral coil 21a of 1 side non-contact charge module 41 and 2 lateral coil 21b of 2 side non-contact charge modules 42.That is, because can carry out the sending and receiving of electric power in wider scope, so 2 side non-contact charge modules 42 are difficult to be subject to the impact with respect to the angle of 1 side non-contact charge module 41.
In addition, terminal 22a, 23a can be mutually close, also can separate configuration, and still, separate configuration is more easily installed side non-contact charge module 41 1 time.
Magnetic flakes 51 arranges in order to improve the power transmission efficiency of the non-contact charge that has utilized electromagnetic induction effect, and it possesses par 31a, as center, is equivalent to central part 32a and the straight line recess 33a of the hollow bulb of coil 21.In addition, in the situation that be provided for the magnet 30a of the position alignment of 1 side non-contact charge module 41 and 2 side non-contact charge modules 42, magnet 30a can be configured in to the top of central part 32a, also can replace central part 32a and distributed magnet 30a.
In addition, as magnetic flakes 51, can use Ni-Zn based ferrite thin slice, Mn-Zn based ferrite thin slice, Mg-Zn based ferrite thin slice etc.Magnetic flakes 51 can be single layer structure, can be also the structure that same material is obtained in the stacked multi-disc of thickness direction, can also be by different magnetic flakes in the stacked multi-disc of thickness direction.Preferably at least that permeability is more than 250 and saturation flux density is thin slice more than 350mT.
In addition, also can use amorphous metal as magnetic flakes 51.When using ferrite lamina as magnetic flakes 51, from the viewpoint of making the AC impedance reduction of 1 lateral coil 21a, be favourable, when using amorphous metal as magnetic flakes, can make 1 lateral coil 21a slimming.
For the magnetic flakes 51 of 1 side non-contact charge module 41, have and can be contained in that approximately 50 * 50mm is with the size of interior degree, thickness is about below 3mm.In the present embodiment, magnetic flakes 51 is roughly square, is about 33mm * 33mm.Preferably, magnetic flakes 51 is formed to the neighboring same degree with 1 lateral coil 21a, or form the neighboring that is greater than 2 lateral coil 21a.In addition, the shape of magnetic flakes 51 can be also circle, rectangle, polygon or four jiaos of rectangle and polygons with large curve.
Straight line recess 33a or slit 34a take in coiling beginning from coil (coil inner side part) to the wire of terminal.Thus, prevent from the coiling beginning of coil overlappingly on the thickness direction of 1 lateral coil 21a to the wire of terminal, can suppress the thickness of 1 side non-contact charge module 41.In addition, by the size of straight line recess 33a or slit 34a is made as, can take in from the coiling beginning of coil to the minimal size of the wire of terminal, can suppress the generation of leakage magnetic flux.In addition, the cross sectional shape of straight line recess 33a is not limited to rectangle, can be also circular-arc or with the shape of fillet.
Straight line recess 33a or slit 34a form almost the end perpendicular to the magnetic flakes 51 intersecting with its one end, coincide with the profile (if circular coil is on tangent line, if square coil is on limit) of central part 32a.By forming in this way straight line recess 33a or slit 34a, can be in the situation that the coiling beginning of not bending wire forms terminal 22a, 23a.The length of straight line recess 33a or slit 34a depends on the internal diameter of 1 lateral coil 21a, is about 15mm～20mm in the situation that of present embodiment.
In addition, also straight line recess 33a or slit 34a can be formed on to the end of magnetic flakes 51 and the immediate part of periphery of central part 32a.Thus, the formation area of straight line recess 33a or slit 34a can be suppressed to bottom line, can improve the efficiency of transmission of non-contact power transmitting device.In addition, now, the length of straight line recess 33a or slit 34a is about 5mm～10mm.Adopt any configuration, the medial end of straight line recess 33a or slit 34a is all connected with central part 32a.
In addition, straight line recess 33a or slit 34a also can adopt other configurations.That is to say, 1 time lateral coil 21a preferably adopts 1 layer of structure, now, can consider using all wire turns of the radial direction of 1 lateral coil 21a as 1 layer of structure, or using its part as 1 layer of structure and using other parts as 2 layers of structure.Therefore, a wherein side of terminal 22a, 23a can draw from the periphery of 1 lateral coil 21a, but the opposing party must draw from inner side.Inevitable overlapping on thickness direction in the situation that to the part of terminal 22a or 23a at the part of 1 lateral coil 21a spooling and coiling destination county from 1 lateral coil 21a, in this office, overlapping portion, straight line recess 33a or slit 34a are set.
In the situation that adopting straight line recess 33a, through hole or slit are not set in magnetic flakes 51, therefore can prevent flux leakage, improve the power transmission efficiency of 1 side non-contact charge module 41.On the other hand, while adopting slit 34, form magnetic flakes 51 comparatively easy.While adopting straight line recess 33a, be not limited to the straight line recess 33a that cross sectional shape is square, it is circular-arc that cross section can be, or with fillet.
Next, the impact that magnet brings 1 side non-contact charge module 41 and 2 side non-contact charge modules 42 described later is described.2 lateral coil 21b in 2 side non-contact charge modules 42 receive by the magnetic field of 1 side non-contact charge module 41 generation and carry out electric power transfer.Here, if at the circumferential arrangement magnet of 1 lateral coil 21a and 2 lateral coil 21b, magnetic field disappears with the magnetic field of avoiding the mode of magnet and producing or will pass through in magnet sometimes.In addition, in magnetic flakes 51, reduce with the permeability of the near part of magnet.That is, because magnet makes field weakening.Therefore,, for the magnetic field that makes to weaken due to magnet is Min., need to take following countermeasure: the distance of 1 lateral coil 21a and 2 lateral coil 21b and magnet is pulled open; The magnetic flakes 51 that possesses the impact that is difficult to be subject to magnet, etc.
Here, because 1 side non-contact charge module 41 is as power supply receiver sides and for fixed terminal, so, 1 side non-contact charge module 41 in fixed terminal to occupy space comparatively abundant.In addition, owing to flowing through, the electric current of 1 lateral coil 21a of 1 side non-contact charge module 41 is larger, so the insulating properties of magnetic flakes 51 is very important.This is because if magnetic flakes 51 has conductivity, the large electric current that flows through 1 lateral coil 21a is likely transmitted to miscellaneous part via magnetic flakes 51.
Consider above aspect, the magnetic flakes 51 of carrying in 1 side non-contact charge module 41 preferably its thickness be 400 μ m above (being preferably 600 μ m～1mm) and there is more than 250 permeability and Flux saturation density more than 350mT as the Ni-Zn based ferrite thin slice (insulating properties) of magnetic characteristic.But, by carrying out sufficient insulation processing, also can not use Ni-Zn based ferrite thin slice and use Mn-Zn based ferrite thin slice (conductivity).
In addition, in 1 side non-contact charge module 41, use magnet 30a to carry out the situation of position alignment and do not use in the situation of magnet 30a, the L value of 1 lateral coil 21a of 1 side non-contact charge module 41 occurs significantly to change.That is to say, owing to having magnet 30a in 1 side non-contact charge module 41, or there is same magnet in 2 side non-contact charge modules 42, can hinder the magnetic flux of 1 side, 2 side non-contact charge intermodules, in the situation that there is magnet, the L value of 1 lateral coil 21a of 1 side non-contact charge module 41 significantly reduces.In order to suppress such impact being caused by magnet 30a, magnetic flakes 51 is preferably high saturation magnetic flux density material (saturation flux density is more than 350mT).Even high saturation magnetic flux density material magnetic field grow, magnetic flux is also difficult for saturated, is therefore difficult to be subject to the impact of magnet 30a, can improve the L value of the coil 21 in the situation of using magnet 30a.Therefore, can make magnetic flakes 51 slimmings.
But if the permeability of magnetic flakes 51 too reduces, the L value of 1 lateral coil 21a extremely declines.Consequently, likely make the Efficiency Decreasing of 1 side non-contact charge module 41.Therefore, the permeability of magnetic flakes 51 is at least more than 250, is preferably more than 1500.In addition, L value also depends on the thickness of magnetic flakes 51, so long as the thickness of ferrite lamina be 400 μ m above.In addition,, although ferrite lamina is compared the AC impedance that can reduce by 1 lateral coil 21a with the magnetic flakes of amorphous metal, also can adopt amorphous metal.By forming this magnetic flakes 51, even if at least one in 1 side non-contact charge module 41 and 2 side non-contact charge modules 42 possesses magnet, 1 time side non-contact charge module 41 also can reduce the impact of magnet.
In addition, by adopting Mn-Zn based ferrite thin slice, can realize further slimming.That is to say, the frequency of electromagnetic induction is 100kHz～200kHz left and right (for example 120kHz) by standard (WPC) regulation.In this low-frequency band, the efficiency of Mn-Zn based ferrite thin slice is high.In addition, Ni-Zn based ferrite thin slice efficiency in high frequency is high.
[about mobile terminal and 2 side non-contact charge modules]
Next, the situation at mobile terminal device by 2 side non-contact charge module 42 lift-launchs is described.
Fig. 5 means the figure of structure of the mobile terminal device of the utility model execution mode, is front view when mobile terminal device is decomposed.
Mobile terminal 520 consists of liquid crystal panel 521, action button 522, substrate 523, battery pack 524 etc.The mobile terminal 520 that utilizes electromagnetic induction effect to receive electric power is to form the housing 525 of its external packing and the inside of housing 526 and have the mobile terminal device of 2 side non-contact charge modules 42.
At the back side that is provided with the housing 525 of liquid crystal panel 521, action button 522, be provided with substrate 523, on this substrate 523, be provided with control part, this control part receives from the information of action button 522 inputs and the information of needs is presented to liquid crystal panel 521 and mobile terminal 520 integral body are controlled.In addition, at the back side of substrate 523, be provided with battery pack 524.Battery pack 524 is connected with substrate 523 and substrate 523 is powered.
And then at the back side of battery pack 524, housing 526 sides, are provided with side non-contact charge module 42 2 times.2 times side non-contact charge module 42 is accepted power supply by electromagnetic induction effect from 1 side non-contact charge module 41, utilizes this electric power to charge to battery pack 524.
2 side non-contact charge modules 42 consist of 2 lateral coil 21b, magnetic flakes 52 etc.In the situation that the direction of accepting power supply is made as to housing 526 sides, if start to configure in order 2 lateral coil 21b, magnetic flakes 52 from housing 526 sides, can alleviate substrate 523 and battery pack 524 impact accept power supply.
In addition, sometimes 2 side non-contact charge modules 42 have for and 1 side non-contact charge module 41 between the magnet 30b of position alignment.In this case, magnet 30b is configured in the hollow bulb of the middle section that is positioned at 2 lateral coil 21b.According to standard (WPC), stipulated that this magnet is that circle, diameter are that 15.5mm is with inferior.Magnet 30b is coin, must be configured to its center consistent with the spooling central shaft of 2 lateral coil 21b.This is in order to alleviate the impact of magnet 30b on 2 lateral coil 21b.Therefore the magnet 30b that, 2 side non-contact charge modules 42 possess causes 1 lateral coil 2a and 21 lateral coil 2b both sides' L value to reduce.
In the situation that 2 side non-contact charge modules 42 have magnet 30b, as the first method of distributed magnet 30b, there is the method at the upper surface distributed magnet 30b of the central part 32b of magnetic flakes 52.In addition, central part 32b described here is identical with the central part 32a of the magnetic flakes 51 shown in Fig. 3.In addition, as the second method of distributed magnet 30b, there is distributed magnet 30b to replace the method for the central part 32b of magnetic flakes 52.In the second method, because magnet 30b is configured in the hollow region of 2 lateral coil 21b, so can be by 42 miniaturizations of 2 side non-contact charge modules.
In addition,, in the situation that do not use magnet in the position alignment of 1 side non-contact charge module 41 and 2 side non-contact charge modules 42, do not need magnet 30b.
Next, side non-contact charge module 42 is described 2 times.
Fig. 6 means the figure of 2 side non-contact charge modules of the utility model execution mode, represents the situation that 2 lateral coils are circular coils.
Fig. 7 means the details drawing of 2 side non-contact charge modules of the utility model execution mode.Fig. 7 A is the vertical view of 2 side non-contact charge modules, and Fig. 7 B is the C-C sectional view of 2 side non-contact charge modules in Fig. 7 A.Fig. 7 C is the D-D sectional view of 2 side non-contact charge modules in Fig. 7 A being provided with in the situation of straight line recess.Fig. 7 D is the D-D sectional view of 2 side non-contact charge modules in Fig. 7 A being provided with in the situation of slit.In addition, Fig. 7 A, Fig. 7 B represent not possess the situation of magnet 30b.In addition,, in the situation that possessing magnet, possesses the magnet 30b being represented by dotted lines.
Fig. 6～the Fig. 7 that is used for 2 side non-contact charge modules 42 are described is respectively with corresponding for Fig. 3～Fig. 4 of 1 side non-contact charge module 41 is described.The structure of 2 side non-contact charge modules 42 and 1 side non-contact charge module 41 are roughly the same.
As the difference of 2 side non-contact charge modules 42 and 1 side non-contact charge module 41, can enumerate size and the material of magnetic flakes 52.For the magnetic flakes 52 of 2 side non-contact charge modules 42, have and can be contained in that approximately 40 * 40mm is with the size of interior degree, thickness is below 2mm.
Size for the magnetic flakes 51 of 1 side non-contact charge module 41 and magnetic flakes 52 for 2 side non-contact charge modules 42 is different.This is because 2 side non-contact charge modules 42 are generally equipped on portable electric appts, and is required miniaturization.In the present embodiment, magnetic flakes 52 is roughly square, is about 33mm * 33mm.Preferably, magnetic flakes 52 is formed to the neighboring same degree with 2 lateral coil 21b, or form the neighboring that is greater than 2 lateral coil 21b.In addition, the shape of magnetic flakes 51 can be also circle, rectangle, polygon or four jiaos of rectangle and polygons with large curve.
In addition, because 2 side non-contact charge modules 42 are as power supply receiver sides and for mobile terminal, so, 2 side non-contact charge modules 42 in mobile terminal to occupy space not abundant.In addition, owing to flowing through, the electric current of 2 lateral coil 21b of 2 side non-contact charge modules 42 is less, so very do not require the insulating properties of magnetic flakes 52.In addition, in the present embodiment, by the wire of about 0.18mm～0.35mm, form lateral coil 21b 2 times, wherein, for 2 lateral coil 21b of 2 side non-contact charge modules 42, the preferred wire of 0.18mm～0.30mm left and right.
In the situation that carried electronic equipment is mobile phone, 2 side non-contact charge modules 2 are configured in the shell of the external packing that forms mobile phone and mostly between its inner battery pack.Generally speaking, because the housing of battery pack is aluminium, so electric power transfer is brought to harmful effect.This is because produce vortex flow in the direction weakening at the magnetic flux that coil is produced in aluminium, thereby causes that coil flux weakens.Therefore, need to and be configured between 2 lateral coil 21b on this external packing at the aluminium of the external packing as battery pack magnetic flakes 52 is set, thereby alleviate the impact of aluminium.
Consider above aspect, importantly for the magnetic flakes 52 of 2 side non-contact charge modules 42, use permeability and the high material of saturation flux density, thereby improve the L value of 2 lateral coil 21b as far as possible.Substantially same with magnetic flakes 51, so long as permeability is more than 250 and saturation flux density is material more than 350mT.In the present embodiment, be preferably the sintered body of Mn-Zn based ferrite, permeability is more than 1500, and saturation flux density is more than 400, and more than thickness is about 400 μ m.But, can be also Ni-Zn based ferrite, as long as permeability is more than 250 and saturation flux density is more than 350, just can carry out and 1 side non-contact charge module 41 between electric power transfer.In addition, 2 times lateral coil 21b is also same with 1 lateral coil 21a, and spooling becomes circular or essentially rectangular.There is the situation that possesses magnet 30a in 1 side non-contact charge module 41 and carry out position alignment, and do not possess magnet 30a and carry out the situation of position alignment.
Next, the relation between the size of magnet 30a and the size of the internal diameter of 1 lateral coil 21a is described.At this, the situation that disposes magnet 30a in 1 side non-contact charge module 41 is described, still, same relation is also set up for the situation that disposes magnet 30b in 2 side non-contact charge modules 42.In this case, magnet 30b is equivalent to magnet 30a.
The following describes the magnetic flakes 51 of 1 side non-contact charge module 41 and the magnetic flakes 52 of 2 side non-contact charge modules 42 that in Fig. 4, Fig. 7 etc., represent.
Fig. 8 means the schematic diagram of the magnetic flakes of the utility model execution mode.Fig. 8 A is the vertical view of magnetic flakes, and Fig. 8 B is the E-E sectional view of Fig. 8 A.In addition, for easy understanding, amplify recess and illustrate.In addition, as an example, the magnetic flakes 51 of 1 side non-contact charge module 41 is described, but the explanation of following relevant magnetic flakes 51 also can be applicable to the magnetic flakes 52 of 2 side non-contact charge modules 42.In addition, the magnetic flakes after sintering 51 is of a size of 30mm * 30mm * 0.4mm.
On at least one face of magnetic flakes 51, on a plurality of straight lines, form a plurality of recesses 53.Recess 53 is hole shape, can be ellipse or rectangle, but does not form groove shape.Preferably at a face of magnetic flakes 51 on the whole, be formed uniformly recess 53, therefore preferably Breadth Maximum is the following recess 53 in 1mm left and right as far as possible.The shape of recess 53 can be any shape, can be rounded, oval, polygon or other shapes.Recess 53 in present embodiment is that opening surface is the circle of 0.5mm * 0.5mm, and the degree of depth is 0.1mm.Substantially, so long as the area of peristome is equivalent to the circular area from the circular area of 0.5mm * 0.5mm to 1mm * 1mm.If be greater than this area, the wire of 1 lateral coil 21a can enter in recess 53, cannot guarantee the distance between 1 lateral coil 21a and the bottom of recess 53.In addition, generally speaking the wire diameter of wire is 0.25mm～0.4mm left and right, be less than the opening surface of recess 53, but wire is become planar line round by spooling, thereby is not easy to enter in recess 53.In addition,, if be configured to the wire diameter that the Breadth Maximum of the opening surface of recess 53 is less than 1 lateral coil 21a, can guarantee reliably the distance between the bottom of recess 53 and the wire of 1 lateral coil 21a.In addition, the Breadth Maximum of the opening surface of so-called recess 53, for example, in the situation that the elliptical shape that opening surface is 1mm * 0.5mm is 1mm, due to the desirable any shape of recess 53, therefore refers to the maximum of the width of point-to-point transmission arbitrarily.
In addition, the degree of depth of recess 53 is 0.06mm～0.15mm left and right.Or 10%～25% left and right of the thickness of magnetic flakes 51.In addition, the thickness of magnetic flakes 51 refers to the thickness of the par 31a of magnetic flakes 51.Thus, can, when maintaining the power transmission efficiency of non-contact charge module, obtain to greatest extent effect of the present utility model.That is, if recess 53 is excessively dark, the volume of magnetic flakes 51 reduces, and makes to improve the effect reduction of the L value of 1 lateral coil 21a.But, if recess 53 is excessively shallow, be difficult to fully obtain effect of the present utility model.And then, a plurality of recesses 53 are set, the distance between recess is about 1mm, is made as the distance of 0.5mm～3mm left and right.That is, in the present embodiment, with respect to the area of the face of magnetic flakes 51, the shared area of recess 53 is about 25%, is made as 10%～35% left and right.If be less than 10%, cannot fully obtain the effect that forms recess 53 gained, if surpass 35%, the strength decreased of magnetic flakes 51.That is, become easily damaged, if magnetic flakes 51 breakages, the characteristic of magnetic flakes 51 can change.Therefore,, by being made as 10%～35% left and right, can guaranteeing intensity and obtain to greatest extent effect of the present utility model.In addition,, if the distance that magnetic flakes 51 and 1 lateral coil 21a separate is greater than above-mentioned distance, the influence power that the L value that makes 1 lateral coil 21a of magnetic flakes 51 improves dies down.Also have, the horizontal distance that recess is 53 is preferably greater than the horizontal width of the opening surface of recess 53.At longitudinal direction or which direction is too arbitrarily.Thus, can maintain the intensity of the magnetic flakes 51 that the party makes progress.
In addition, the configuration of recess 53 shape that is preferably arranged in a straight line as Fig. 8 A, all can but be configured to randomly any shape.But, preferably make the distance of 53 of each recesses identical, do not make recess 53 concentrate on a part and evenly configuration.And, compare with situation about being configured on grid-like co-ordination, as Fig. 8 A, be listed in while transversely misplacing a little every horizontal 1, can more guarantee the intensity of magnetic flakes 51.And then, and between which adjacent other recess 53, can both keep almost identical distance, therefore can make intensity roughly the same in any direction.
In addition, preferably recess 53 is at least arranged on to the part of 1 lateral coil 21a of configuration, i.e. 1 lateral coil 21a part relative with magnetic flakes 51.The heating that thus, can prevent 1 lateral coil 21a is transmitted to magnetic flakes 51.
Fig. 9 mean the utility model execution mode non-contact charge module sectional view and in magnetic flakes, do not form the figure of comparison of sectional view of the non-contact charge module of recess.Fig. 9 A is for the sectional view of the non-contact charge module do not form recess in magnetic flakes in the situation that is described.Fig. 9 B is the sectional view of the non-contact charge module of present embodiment.Figure 10 means the figure of temperature characterisitic of the magnetic flakes of the utility model execution mode, Figure 10 A represents the relation between the L value of coil of temperature and non-contact charge module, and Figure 10 B represents the relation between the L value slip of coil of temperature and non-contact charge module.The characteristic variations of the non-contact charge module causing because of variations in temperature here, depends on the temperature characterisitic of magnetic flakes substantially.
As shown in Figure 9 B, 1 lateral coil 21a is configured in the face side that is formed with recess 53 of magnetic flakes 51.But recess 53 also can be formed on the two sides of magnetic flakes 51.That is to say, generally speaking, in contrary face (back side) side of the face with 1 lateral coil 21a of configuration of magnetic flakes 51, sometimes configure electronic component.In addition,, if 2 side non-contact charge modules 42, likely side is gone back setting battery group 524 except configuration electronic component overleaf.No matter be electronic component or battery pack 524, all easily bring heating, this heating is transmitted to magnetic flakes 51,52.Therefore,, in order to suppress this heat transfer, can also form overleaf recess 53.
As mentioned above, by 1 lateral coil 21a being configured in to the face side that is formed with recess 53 of magnetic flakes 51, can effectively prevent that the heating of 1 lateral coil 21a is transmitted to magnetic flakes 51.Its result, can suppress the temperature characterisitic due to magnetic flakes 51 shown in Figure 10 and phenomenon that the characteristic of magnetic flakes 51 changes, maintains the power transmission efficiency of non-contact charge intermodule.As shown in figure 10, because the heating magnetic flakes 51 of 1 lateral coil 21a heats up, as its result, the characteristic of non-contact charge module displays as L value and L value slip.Wherein, L value slip refers to, in another non-contact charge module, possess the L value of coil of the non-contact charge module in the situation of magnet divided by the value of L value gained that does not possess the coil of the non-contact charge module in the situation of magnet in another non-contact charge module, the less value of impact of magnet is less.In addition, Figure 10 be in thermostat from reaching design temperature, place after minimum 20 minutes to measure and obtain.
In addition, be pasted with the screening glass for the protection of magnetic flakes 51 on the two sides of magnetic flakes 51, its thickness is 10 μ m～50 μ m.Therefore, thin than the degree of depth of recess 53.That is,, because the thickness of the depth ratio screening glass of recess 53 is dark, therefore can between 1 lateral coil 21a and the bottom of recess 53, guarantee reliably distance.In addition, screening glass is formed by the material with flexibility, such as being formed by plastics such as PET (PETG).PET is sheeting processing ease, does not comprise carrying capacity of environment material etc., is effective antipollution material.In addition, also can be by the screening glass that constitutes of the plastics of the transparency or light-proofness or these plastics.Thus, the electroconductive component that can protect magnetic part or form on magnetic part (aftermentioned) is subject to the impact of ultraviolet ray etc., improves long-term reliability.
The manufacture method of the magnetic flakes 51,52 of present embodiment is then described.As mentioned above, magnetic flakes 51,52 is manufactured by the manufacture method as patent documentation 2 substantially, but also forms recess 53 in the magnetic flakes 51,52 of present embodiment.
Magnetic part consists of ferrite etc.Ferrite has Ni-Zn (nickel zinc) based ferrite, Mn-Zn (MnZn) based ferrite etc.For example, take Fe2O3 as 48.5mol%, ZnO as 20.55mol%, NiO was 10.40mol% as 20.55mol%, CuO proportion of composing coordinates, 750 ℃～900 ℃ calcinings 4 hours.As dielectric, for example, use Ti (titanium) oxide.
First, using the precalcining pottery of above-mentioned proportion of composing be magnetic powder 3000g, as the METOLOSE135g of water-soluble binder, as CERAMISOL270g and the distilled water 340g of oiliness plasticizer, use batch mixer to mix 20 minutes.Then, make it by three-roller totally 3 times, thereby generate blank.At 5 ℃, this blank preserved 96 hours and made after its maturation, using vacuum extruding form device to make raw cook (green sheet).
Make this raw cook by the cylindrical drier of 95 ℃, make thus its dry tack free, then cut off, make the raw cook of the size of regulation.The raw cook of making is calcined 3 hours at 90 ℃, thereby made sintered body.
In order to form recess 53, to form the mode of recess when the raw cook moulding, make raw cook, or also can raw cook is shaped to laminar after, by convex mold compresses to raw cook, thereby generate recess 53.In addition,, by calcining, the size of the size of magnetic flakes 51 and recess 53 all narrows down to approximately 8 one-tenth.Therefore,, in order to form the recess 53 of above-mentioned size, width and the degree of depth that need on raw cook, form peristome are about the recess of 1.25 times.
As above-mentioned, as the formation method of recess 53, the mold compresses that forms the protuberance of recess 53 can be arrived to the plane lamina before calcining, thereby form recess 53.Thus, at the periphery of recess 53, owing to being pressed, the density of magnetic material improves, thereby crystallinity improves.That is, the characteristic of magnetic flakes 51 and the density of magnetic material improve correspondingly and improve, so the power transmission efficiency of non-contact charge intermodule improves.Or, also the magnetic material before calcining can be formed and has the laminar of recess.In this case, different from said method, magnetic material is even, therefore can obtain irrelevant, the stable characteristic in position with magnetic flakes 51.
In addition, as patent documentation 2, magnetic flakes 51 can have a plurality of slits of the flexibility of giving.Possess 1 times～3 times left and right that distance between the slit of flexibility is preferably made as the distance of 53 of recesses.Thus, can guarantee the flexibility of magnetic flakes 51, and can balance configure well recess 53.And, even if possess slit and recess 53, also can access the characteristic of magnetic flakes 51 of the power transmission efficiency of abundant acquisition non-contact charge intermodule.
The disclosure of the specification that the Japan Patent Patent of submitting on September 9th, 2011 comprises for No. 2011-196834, drawing and description summary is fully incorporated in the application.
Industrial applicibility
According to non-contact charge module of the present utility model, electronic equipment and non-contact charge equipment, even if can realize for a long time, charge, power transmission efficiency also keeps high efficiency and stable contact charging module, electronic equipment and non-contact charge equipment, therefore, the transmitter side charging device when the portable sets such as the mobile terminals such as mobile phone, portable audio machine and portable computer, digital camera, video camera are charged is exceedingly useful.
Claims (9)
1. non-contact charge module, comprising:
The planar coil portion that spooling wire forms; And
Magnetic flakes, it possesses for loading the face of described planar coil portion,
Described magnetic flakes possesses a plurality of recesses on the face of the described planar coil of mounting portion, the bottom of described a plurality of recesses and described planar coil partly from.
2. non-contact charge module as claimed in claim 1,
Described a plurality of recess is spaced from each other.
3. non-contact charge module as claimed in claim 1,
Described a plurality of recess is arranged in the face relative with described planar coil portion the part relative with described planar coil portion.
4. non-contact charge module as claimed in claim 1,
The occupied area of described a plurality of recesses be the face relative with described planar coil portion area 10%～35%.
5. non-contact charge module as claimed in claim 1,
The degree of depth of described a plurality of recesses be described planar coil portion thickness 10%～25%.
6. non-contact charge module as claimed in claim 1,
The Breadth Maximum of the opening surface of described a plurality of recesses is less than the wire diameter of described wire.
7. non-contact charge module as claimed in claim 1,
In the face relative with described planar coil portion, the distance between the described a plurality of recesses in prescribed direction is greater than the width of the described a plurality of recesses in described prescribed direction.
8. electronic equipment, comprising:
Non-contact charge module claimed in claim 1, and
The battery being recharged by described non-contact charge module.
9. non-contact charge equipment, comprising:
Non-contact charge module claimed in claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011196834A JP4983999B1 (en) | 2011-09-09 | 2011-09-09 | Non-contact charging module and non-contact charging device using the same |
| JP2011-196834 | 2011-09-09 | ||
| PCT/JP2012/005507 WO2013035281A1 (en) | 2011-09-09 | 2012-08-31 | Non-contact charging module, electronic apparatus, and non-contact charging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910505U true CN203910505U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201290000798.4U Expired - Fee Related CN203910505U (en) | 2011-09-09 | 2012-08-31 | Non-contact charging module, electronic equipment and non-contact charging equipment |
Country Status (3)
| Country | Link |
|---|---|
| JP (3) | JP4983999B1 (en) |
| CN (1) | CN203910505U (en) |
| WO (1) | WO2013035281A1 (en) |
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| CN109192470A (en) * | 2018-08-27 | 2019-01-11 | 昆山联滔电子有限公司 | A kind of coil device |
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| JP4277596B2 (en) * | 2003-06-27 | 2009-06-10 | 戸田工業株式会社 | Sintered ferrite substrate |
| US8193767B2 (en) * | 2006-03-24 | 2012-06-05 | Kabushiki Kaisha Toshiba | Power receiving device, and electronic apparatus and non-contact charger using the same |
| JP2008206234A (en) * | 2007-02-16 | 2008-09-04 | Seiko Epson Corp | Charger, electronic apparatus and charging system |
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-
2011
- 2011-09-09 JP JP2011196834A patent/JP4983999B1/en not_active Expired - Fee Related
-
2012
- 2012-01-25 JP JP2012012698A patent/JP5077493B1/en not_active Expired - Fee Related
- 2012-08-27 JP JP2012186186A patent/JP5870254B2/en not_active Expired - Fee Related
- 2012-08-31 WO PCT/JP2012/005507 patent/WO2013035281A1/en active Application Filing
- 2012-08-31 CN CN201290000798.4U patent/CN203910505U/en not_active Expired - Fee Related
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| CN110383629A (en) * | 2017-03-06 | 2019-10-25 | 3M创新有限公司 | Wireless charging system including boost converter and transmission coil structure |
| CN106899090A (en) * | 2017-03-17 | 2017-06-27 | 宁波微鹅电子科技有限公司 | Wireless power component and electronic installation |
| CN109192470A (en) * | 2018-08-27 | 2019-01-11 | 昆山联滔电子有限公司 | A kind of coil device |
| CN112951537A (en) * | 2019-12-11 | 2021-06-11 | Tdk株式会社 | Magnetic sheet, coil module provided with magnetic sheet, and non-contact power supply device |
| CN112951538A (en) * | 2019-12-11 | 2021-06-11 | Tdk株式会社 | Magnetic sheet, coil module provided with magnetic sheet, and non-contact power supply device |
| CN112951538B (en) * | 2019-12-11 | 2023-02-28 | Tdk株式会社 | Magnetic sheet, coil module provided with magnetic sheet, and non-contact power supply device |
| CN112951537B (en) * | 2019-12-11 | 2023-08-15 | Tdk株式会社 | Magnetic sheet, and coil module and non-contact power supply device provided with magnetic sheet |
| US11749432B2 (en) | 2019-12-11 | 2023-09-05 | Tdk Corporation | Magnetic sheet, coil module having magnetic sheet, and non-contact power supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4983999B1 (en) | 2012-07-25 |
| JP5870254B2 (en) | 2016-02-24 |
| JP2013063014A (en) | 2013-04-04 |
| WO2013035281A1 (en) | 2013-03-14 |
| JP5077493B1 (en) | 2012-11-21 |
| JP2013059225A (en) | 2013-03-28 |
| JP2013058719A (en) | 2013-03-28 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20190831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |