CN109036796A - A kind of two-sided wireless charging transmitting terminal mould group - Google Patents
A kind of two-sided wireless charging transmitting terminal mould group Download PDFInfo
- Publication number
- CN109036796A CN109036796A CN201811001318.6A CN201811001318A CN109036796A CN 109036796 A CN109036796 A CN 109036796A CN 201811001318 A CN201811001318 A CN 201811001318A CN 109036796 A CN109036796 A CN 109036796A
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- Prior art keywords
- wireless charging
- transmitting terminal
- material layer
- layer
- charging transmitting
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Classifications
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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
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- H01F27/24—Magnetic cores
-
- 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
-
- 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
- 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
Abstract
The invention discloses a kind of two-sided wireless charging transmitting terminal mould group, including a magnetic composite layer, the first, second adhesive layer and respectively it is fitted in the first, second wireless charging transmitting terminal coil group on adhesive layer；Magnetic composite layer includes a shielding material layer, is located at first, second thermal conductive material layer on two surface of shielding material layer and is located at the first, second magnetic conductive material layer of Heat Conduction Material layer surface.Wireless charging transmitting terminal coil group separately includes at least one transmitting end-coil or one group is adopted the multiple transmitting end-coils being connected serially.In addition, a kind of two-sided wireless charging transmitting terminal mould group includes a control circuit board, has the function of the independent control to the first, second coil group of wireless charging transmitting terminal.The transmitting terminal mould group can be two-sided while independently-powered for electronic equipment, and charge efficiency is high, easy to use.
Description
Technical field
The present invention relates to the wireless charging transmitting terminal mould groups in wireless charging field, especially have the two-sided while function that charges
The wireless charging transmitting terminal mould group of energy.
Background technique
Wireless charging technology is a kind of new technique to be charged using electromagnetic induction principle.It is induction wireless
Charging includes one (group) transmitting end-coil and one (group) reception end-coil, and transmitting end-coil is connected with line power supply, by electric energy
It is converted into electromagnetic energy；End-coil is received by electromagnetic induction, receives the electromagnetic energy from transmitting terminal, so that electric current is generated, for electricity
Pond charging is powered for equipment.Nowadays, more and more portable electronic devices, such as smart phone, tablet computer, wireless ear
Machine, Intelligent bracelet wrist-watch etc., charging technique gradually develop to wireless penetration.Wireless charging technology used in these electronic equipments
In, by charger (transmitting terminal) by AC conversion at the electromagnetic signal of 100kHz frequencies above, using electromagnetic induction principle,
The reception end-coil coupled electromagnetic field being integrated in inside equipment, is changed into direct current for signal, charges for its battery.
Induction Wireless charging coil, usually coil surface can compound one layer of magnetic material, as ferrite sintered body,
Soft magnetic materials, non-crystalline material, nanocrystalline material etc..This kind of magnetic material plays the role of main in wireless charging technology
There are two:
First is that ancillary coil assembles energy of electromagnetic field.If not using magnetic material, coil converts electrical energy into electromagnetic energy
Afterwards, it can be disseminated to through medium in open space with the electromagnetic signal of energy, only the electricity near the coil in certain space
Magnetic signal can be utilized, remaining electromagnetic signal and energy can not utilize, so that two coil of transmitting terminal receiving end is extremely difficult
Realize electromagnetic field couples.Caused by this intuitively as a result, unless find an accurately charge position, otherwise charging equipment
Device identification can not be electrically charged；Even if having found position, charge efficiency is also extremely low.
Second is that reducing or preventing interference of the electromagnetic energy to other electronic components, i.e., " every magnetic ".Charge coil is by leading
Line is connected with matched circuit board, and circuit board itself and electronic component above are mostly metal material.Work as electromagnetic wave
Transmitting will form eddy current, metal made to generate heat to metal surface.For wireless charging transmitting terminal or receiving end, by design
Usually all in a narrow space, circuit board is close with coil distance, in order to reduce or avoid above problem bring
It influences, so that it may by being solved in coil surface recombination magnetic material.
With the continuous development of wireless charging technology and universal, more and more wireless charging devices (charger) will be multi-thread
Circle/multimode group is integrated into an equipment, such as relatively common to meet the needs of user is for multiple devices while wireless charging
Three-winding charging module, three coils in " I " fonts arrange, coil the same face compound soft magnetic material.All coils it is whole or
Respectively emit electromagnetic energy, controlled by signal, the object for being placed on charged area is identified, if reception is recognized accurately
End-coil mould group, then charge function starts, otherwise places metallic foreign body in charged area, and charge function can not start.
If two or more transmitting coils are located at the two sides of magnetic material, this seems to be designed to that one kind has
The transmitting terminal mould group of two-sided wireless charging function.However, such design can not achieve two-sided while charge.Two (or more)
Magnetic material among coil can be obviously improved coil for the storage capacity of magnetic energy, realize charge function with this, this is
It can be proved by testing inductance；And magnetic material can not selectively promote the inductance of one of coil, so that two sides
Coil itself electromagnetic coupling effect occurs, electromagnetic signal influences each other, and can not also accurately identify the object of charged area.Finally
In this case, the transmission of electromagnetic energy is in a kind of very chaotic state, therefore equipment can not normally complete charging.
Currently, being by increasing the distance between coil, to avoid two coils itself hair to the settling mode of problem above
Raw electromagnetic coupling.Wireless charging transmitting terminal (charger) volume designed in this way is larger, otherwise will affect charge efficiency, for just
It is unfavorable for portable device miniaturization, lightening development trend.
Summary of the invention
For the limitation of the prior art, the purpose of the present invention is to provide a kind of two-sided wireless charging transmitting terminal mould group,
The two-sided independent charge function of wireless charger can be realized in the case where not increasing charging equipment volume.Firstly, for double
Face wireless charging transmitting terminal mould group carries out region division to magnetic material layer by the shielding material of metal material, makes magnetic material
The function that material realizes conducts electromagnetic energy one to one, promotes inductance with coil, avoids unwanted electromagnetic coupling phenomena.Its
It is secondary, it is contemplated that after the shielding material of magnetic material and metal material is compound, it is possible to existing heating problem, it is thermally conductive by increasing
Heat is conducted and is dissipated by layer, ensure that the job stability of two-sided wireless charging transmitting terminal mould group.
To achieve the goals above, present invention employs following technical solutions:
A kind of two-sided wireless charging transmitting terminal mould group, comprising: a magnetic composite layer has upper and lower two surface；Respectively
It is fitted in first adhesive layer and the second adhesive layer on upper and lower two surface of magnetic composite layer；And it is fitted in the first adhesive layer
On wireless charging transmitting terminal first coil group and the second coil group of wireless charging transmitting terminal for being fitted on the second adhesive layer.
The magnetic composite layer includes:
There are two the shielding material layer on surface for one tool；
It is located at first thermal conductive material layer and the second thermal conductive material layer on two surface of shielding material layer；And
Positioned at the first magnetic conductive material layer of the first Heat Conduction Material layer surface and positioned at the second of the second Heat Conduction Material layer surface
Magnetic conductive material layer.
Wherein: the shielding material layer, be a layer thickness be 0.01mm~1mm metal foil, piece or plate, the material of metal
Matter is the alloy that one or more of aluminium, copper, silver, iron, nickel are formed；Preferably, with a thickness of 0.05mm~0.1mm, material
Matter is one of aluminium foil or copper foil；
First, second thermal conductive material layer, respectively 1 μm~50 μm of a layer thickness of graphite, multi-layer graphene, list
The mixing material of one or more of layer graphene, it is preferred that be 5 μm~10 μm of multi-layer graphene material；
First, second magnetic conductive material layer, the respectively magnetic material of a layer thickness 0.05mm~2mm, it is preferred that
With a thickness of 0.3mm~1mm；Magnetic material be sintering manganese-zinc ferrite, sintering nickel-zinc ferrite, amorphous alloy, nanometer crystal alloy,
The compound of one or more of soft magnetism fexible film etc..
First, second coil group of wireless charging transmitting terminal separately includes at least one transmitting end-coil or one group
Adopt the multiple transmitting end-coils being connected serially.
The magnetic composite layer should cover all institute in the first, second coil group of wireless charging transmitting terminal
There is the plane domain that coil is constituted.
A kind of two-sided wireless charging transmitting terminal mould group, which is characterized in that including a control circuit board, circuit board institute is in place
It sets, any charged area that the first, second coil group is covered in wireless charging transmitting terminal mould group can not be sheltered from；Described
Circuit board has the function to the independent control of the first, second coil group of wireless charging transmitting terminal.
In the present invention, compared with traditional single side wireless charging mould group, increase in the another side of magnetic material (antifreeze plate)
One group of wireless charging transmitting terminal coil, if still using the magnetic material in traditional mould group, it may appear that the problem of be material is same
When conduct electromagnetic signal in two coils, cannot achieve differentiation, cause two transmitting coils that self electromagnetism coupling, charge function occurs
Directly fail.We improve magnetic material, using shielding material layer by therefrom one point of the Single Magnetic material of script
It is two, shielding material layer has very significant barrier action for the electromagnetic wave of wireless charging frequency, emits two coil groups
Electromagnetic signal after magnetic material is assembled, be still to propagate respectively, guarantee the normal function of the wireless charging of script.
Polymeric barrier layer materials belong to metal material, with magnetic material it is compound after, polymeric barrier layer materials surface more or less can be straight
It connects and electromagnetic energy contacts, and in two layers of compound interface location fever.And wireless charging is a lasting process, heat is not
It is disconnected to assemble the damage for being likely to result in wireless charging mould group.And magnetic material layer, such as soft magnetism flexible material, usual thermal conductivity is all
It is very low, therefore between magnetic material layer and shielding material layer, it is realized by the higher graphite of thermal conductivity, grapheme material layer
The thermally conductive and heat dissipation of wireless charging mould group.
General single side wireless charging mould group (charger), the circuit board for controlling charging are usually located at the another of magnetic material
Face.The volume of charger is reduced in this way, and charging process does not interfere with circuit board；And in the present invention, two-sided wireless charging
Electric region cannot be blocked by control circuit board, otherwise charge efficiency can be caused to reduce, or even cause burning for circuit board.
Wireless charging technology more advanced at present has identification function (to pass through control circuit the equipment in charge position
Plate), charging module detects equipment, and charge function starts.And in view of charging module of the present invention in application process may
Appearance have equipment charge on one side and another side without equipment charge the case where, in this case, we adopt the technical scheme that, electricity
Road plate takes independent control to the first, second coil group of wireless charging transmitting terminal, and the one side without equipment charge in this way can be located
In non-powered state, charging module energy consumption is reduced, reduces calorific value.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, below by drawings and examples, to this hair
It is bright to be further described specifically.
The structural schematic diagram of the two-sided charging wireless transmitting terminals mould group of Fig. 1
Fig. 2 magnetic composite layer the schematic diagram of the section structure
Specific embodiment
To make the present invention provide a kind of two-sided wireless charging transmitting terminal mould group, can be realized two-sided while only for multiple equipment
The function of vertical charging, promotes user experience.
To be more clear the purposes, technical schemes and advantages of the embodiment of the present invention, in conjunction with the attached drawing in the present invention, to reality
Apply technical solution in example carry out it is more complete, be specifically described.Based on the embodiments of the present invention, the common skill in this field
The other embodiments that art personnel obtain without creative work, it should also within belonging to the scope of protection of the present invention.
Referring to Fig.1, Fig. 1 is a kind of structural schematic diagram of two-sided charging wireless transmitting terminals mould group provided by the invention, mould group
Include:
Magnetic composite layer 1 is multi-layer compound structure material, has upper and lower two surface；
First adhesive layer 21 and the second adhesive layer 22 are fitted in upper and lower two surface of composite layer 1 respectively；
Wireless charging transmitting terminal first coil group 31 and the second coil group 32 are bonded in by the first, second adhesive layer
Magnetic composite surface；
Control circuit board 41 is connected by conducting wire with the first, second coil group of wireless charging transmitting terminal 31,32.
First, second coil group 31,32 separately includes one or more wireless charging transmitting terminal coils, described in Fig. 1
Be that transmitting terminal number of coils is 1 embodiment in the first, second coil group, and for emitting in the first, second coil group
End-coil quantity is respectively multiple embodiments, and multi-coil uses series system, the embodiment base of remaining each section and 1 coil
This identical, no longer independent Detailed description of the invention.
The position of control circuit board can not shelter from any charged area that the first, second coil group 31,32 is covered,
Otherwise it will affect charge efficiency and cause circuit board heating；In order to realize that two-sided wireless charging transmitting terminal mould group was charging
Independence and selectivity in journey, control circuit board have the function of realizing the independent control for charging to the first, second coil group.
It is important to note that having the function of that above-mentioned " independent control " has carried out right and wanted for control circuit board in the present invention
It asks；And how to realize " independent control ", it is that control circuit board integrated circuit is passed through by the professional of electronic circuit field
It designs to realize, therefore for the physical circuit design problem of control circuit board, not in technical scope and power of the invention
Within sharp claimed range.
It is the schematic diagram of the section structure of magnetic composite layer 1 referring to Fig. 2, Fig. 2, including:
Shielding material layer 11, there are two surfaces for tool；
First thermal conductive material layer 121 and the second thermal conductive material layer 122 are compounded in two surfaces of shielding material layer 11；
First magnetic conductive material layer 131 and the second magnetic conductive material layer 132 are compounded in the first thermal conductive material layer 121 and respectively
Two thermal conductive material layers 122.
Specifically, shielding material layer 11 has the property that can shield wireless charging tranmitting frequency electromagnetic wave, can use
The material of the materials such as aluminium, copper, silver, Kufil.Generally, the above-mentioned material of 0.01mm has had been provided with for electric under the frequency
The certain shielding properties of magnetic wave.
Preferably, it is contemplated that shield effectiveness is more demanding and the lightening requirement of wireless charging mould group, shielding material layer
With a thickness of 0.05mm~0.1mm；Comprehensively consider shield effectiveness and material cost, preferred shielding material layer material is aluminium foil or copper
Foil.
Specifically, the first, second thermal conductive material layer 121,122 is compounded in two surfaces of shielding material layer 11 respectively, tool
The bluk recombination mode present invention is not particularly limited.The electromagnetic energy that transmitting end-coil generates acts on shielding material layer surface,
It can cause eddy current and persistent fever, thermal conductive material layer is one layer of material with high thermal conductivity, by graphite or graphite alkenes material
1 μm~50 μm of material layer is made in material, can achieve extraordinary thermally conductive, heat dissipation effect.
Preferably, using 5 μm~10 μm of multi-layer graphene material, in comparison, according to graphite as heat-conducting layer,
Reach effect same material requested thickness Du Genggao；And single-layer graphene material is used, though the good price of heat-conducting effect is relatively more high
It is expensive, it is difficult to a large amount of to use.
Specifically, the first, second magnetic conductive material layer 131,132 is compounded in the first, second thermal conductive material layer 121,122 respectively
Another surface, the specific complex method present invention is not particularly limited equally.Magnetic material layer can promote charging transmitting terminal
Coil inductance actually increases coil for the storage capacity of magnetic energy, indirectly, improves wireless charging speed and efficiency.
The magnetic material such as manganese-zinc ferrite of sintering, nickel-zinc ferrite, amorphous alloy, nanometer crystal alloy, the soft magnetism of sintering
Fexible film etc. all can serve as magnetic conductive material layer use, and thickness is in 0.05mm~2mm etc..These magnetic materials it is common
Point is the magnetic conductivity with higher under wireless charging frequency, and amorphous alloy is with higher simultaneously multiple with nanometer crystal alloy
Magnetic conductivity real and imaginary parts, magnetic loss is larger, therefore more preferably, and using ferrite sintered body or soft magnetism fexible film, can use up can
Magnetic loss bring heating problem can be reduced.
More preferably, soft magnetism flexible thin-film material can be used.For ferrite sintered body (manganese-zinc ferrite, nickel-zinc ferrite
Deng), material hardness is high, and frangible, the ferrite sintered body material of non-standard shapes needs to be opened customization processing, can not be by simple
Cross cutting mode directly customizes processing.And soft magnetism flexible thin-film material's performance is stablized, and easy processing, cross cutting.
Magnetic composite layer 1 should can cover the plane domain that transmitting terminal coil group coil is constituted, in other words,
Any part of two groups of transmitting end-coils should all be fitted tightly over magnetic material layer surface by adhesive layer, as shown in Figure 1.It is no
Then, the magnetic conductive material layer in magnetic composite layer will be greatly reduced the promotion effect of transmitting terminal coil inductance.
Using the two-sided wireless charging transmitting terminal mould group in the present invention, filling with two-sided wireless charging function can be fabricated to
Electric appliance.The charger two sides can be the electronics such as mobile phone, tablet computer, bracelet, wrist-watch, earphone with wireless charging function simultaneously
Equipment is independently-powered, and charge efficiency is high, easy to use.
It it should be noted that above embodiments only illustrate and describe technical solution of the present invention, and is not to this
The limitation of invention, within the scope of the invention as claimed, to the non-creative modification that embodiment is made, for this field profession
It is it will be apparent that in the case where not departing from technological innovation range of the invention, in other embodiments for technical staff
Middle realization, it should also fall within the scope of the present invention.
Claims (8)
1. a kind of two-sided wireless charging transmitting terminal mould group characterized by comprising
One magnetic composite layer has upper and lower two surface；
It is fitted in first adhesive layer and the second adhesive layer on upper and lower two surface of magnetic composite layer respectively；And
The wireless charging transmitting terminal first coil group being fitted on the first adhesive layer and the wireless charging being fitted on the second adhesive layer
Electric the second coil group of transmitting terminal.
2. a kind of two-sided wireless charging transmitting terminal mould group as described in claim 1, which is characterized in that the magnetic coupling
Material layer includes:
There are two the shielding material layer on surface for one tool；
It is located at first thermal conductive material layer and the second thermal conductive material layer on two surface of shielding material layer；And
The first magnetic conductive material layer positioned at the first Heat Conduction Material layer surface and the second magnetic conduction positioned at the second Heat Conduction Material layer surface
Material layer.
3. a kind of two-sided wireless charging transmitting terminal mould group as described in claim 2, which is characterized in that the shielding material
Layer, be a layer thickness be 0.01mm~1mm metal foil, piece or plate；The material of metal is one of aluminium, copper, silver, iron, nickel
Or the alloy of two or more formation.
4. a kind of two-sided wireless charging transmitting terminal mould group as described in claim 2, which is characterized in that described first is thermally conductive
Material layer and the second thermal conductive material layer, respectively 1 μm~50 μm of a layer thickness of graphite, multi-layer graphene, in single-layer graphene
One or more of mixing.
5. a kind of two-sided wireless charging transmitting terminal mould group as described in claim 2, which is characterized in that first magnetic conduction
Material layer and the second magnetic conductive material layer, the respectively magnetic material of a layer thickness 0.05mm~2mm, material are sintering manganese-zinc ferrite
One or more of body, sintering nickel-zinc ferrite, amorphous alloy, nanometer crystal alloy, soft magnetism fexible film compound.
6. a kind of two-sided wireless charging transmitting terminal mould group as described in claim 1, which is characterized in that the wireless charging
Transmitting terminal first coil group and the second coil group, separately include at least one transmitting end-coil or one group is connected using series system
The multiple transmitting end-coils connect.
7. a kind of two-sided wireless charging transmitting terminal mould group as described in claim 1, which is characterized in that the magnetic coupling
Material layer should cover all the plane domain that all coils are constituted in the first, second coil group of wireless charging transmitting terminal.
8. a kind of two-sided wireless charging transmitting terminal mould group, which is characterized in that including a control circuit board, circuit board position,
Any charged area that the first, second coil group is covered in wireless charging transmitting terminal mould group can not be sheltered from；The electricity
Road plate has the function to the independent control of the first, second coil group of wireless charging transmitting terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811001318.6A CN109036796A (en) | 2018-08-30 | 2018-08-30 | A kind of two-sided wireless charging transmitting terminal mould group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811001318.6A CN109036796A (en) | 2018-08-30 | 2018-08-30 | A kind of two-sided wireless charging transmitting terminal mould group |
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| CN109036796A true CN109036796A (en) | 2018-12-18 |
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| CN201811001318.6A Pending CN109036796A (en) | 2018-08-30 | 2018-08-30 | A kind of two-sided wireless charging transmitting terminal mould group |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109637794A (en) * | 2018-12-21 | 2019-04-16 | 深圳先进技术研究院 | A kind of coil mould group |
| CN109861403A (en) * | 2019-04-03 | 2019-06-07 | 杭州如墨科技有限公司 | A kind of adjustable frequency wireless charging transmitting terminal mould group |
| CN110048515A (en) * | 2019-05-23 | 2019-07-23 | 昆山联滔电子有限公司 | Wireless charging mould group and its manufacture craft |
| CN110060832A (en) * | 2019-05-15 | 2019-07-26 | 昆山联滔电子有限公司 | A kind of preparation method of wireless charging mould group and its magnetic material |
| CN111799895A (en) * | 2020-07-14 | 2020-10-20 | 中国矿业大学 | Magnetic coupling structure and wireless power transmission system |
| CN113098154A (en) * | 2020-01-08 | 2021-07-09 | 北京小米移动软件有限公司 | Wireless charging method and device, electronic equipment and storage medium |
| CN113964959A (en) * | 2021-11-25 | 2022-01-21 | 东莞利富高塑料制品有限公司 | Wireless charging method and wireless charging device |
| CN114123549A (en) * | 2021-11-25 | 2022-03-01 | 东莞利富高塑料制品有限公司 | Double-circuit independent wireless charging system |
| WO2022090861A1 (en) * | 2020-10-27 | 2022-05-05 | 3M Innovative Properties Company | Coil and electrical system including the same |
| WO2024067366A1 (en) * | 2022-09-29 | 2024-04-04 | 华为技术有限公司 | Charging coil module and product related thereto, and preparation method for charging coil module |
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| CN109637794A (en) * | 2018-12-21 | 2019-04-16 | 深圳先进技术研究院 | A kind of coil mould group |
| CN109861403A (en) * | 2019-04-03 | 2019-06-07 | 杭州如墨科技有限公司 | A kind of adjustable frequency wireless charging transmitting terminal mould group |
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| CN111799895B (en) * | 2020-07-14 | 2022-02-22 | 中国矿业大学 | Magnetic coupling structure and wireless power transmission system |
| WO2022090861A1 (en) * | 2020-10-27 | 2022-05-05 | 3M Innovative Properties Company | Coil and electrical system including the same |
| CN113964959A (en) * | 2021-11-25 | 2022-01-21 | 东莞利富高塑料制品有限公司 | Wireless charging method and wireless charging device |
| CN114123549A (en) * | 2021-11-25 | 2022-03-01 | 东莞利富高塑料制品有限公司 | Double-circuit independent wireless charging system |
| WO2024067366A1 (en) * | 2022-09-29 | 2024-04-04 | 华为技术有限公司 | Charging coil module and product related thereto, and preparation method for charging coil module |
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Application publication date: 20181218 |
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