CN109888881A - A kind of relay system applied to wireless charging - Google Patents
A kind of relay system applied to wireless charging Download PDFInfo
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- CN109888881A CN109888881A CN201910225601.5A CN201910225601A CN109888881A CN 109888881 A CN109888881 A CN 109888881A CN 201910225601 A CN201910225601 A CN 201910225601A CN 109888881 A CN109888881 A CN 109888881A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 6
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Abstract
The present invention relates to wireless charging device technical fields, more particularly to a kind of relay system applied to wireless charging, the relay system includes at least one with the first coil for receiving wireless charging energy and at least one second coil with transmitting wireless charging energy；Wireless charging energy is delivered to second coil by high frequency low-resistance circuit by the received wireless charging energy of the first coil institute；The quantity of the first coil is one, and the quantity of second coil is one or more, and the first coil passes through quantity high frequency low-resistance circuit connection identical with second number of coils.Usefulness of the present invention: the relay system provides the trunking solution in a kind of conventional wireless charging process, and the program has extremely more usage scenarios, can be realized the charge requirement of the different shape of load to be charged.
Description
Technical field
The present invention relates to wireless charging device technical fields, and in particular to a kind of relay system applied to wireless charging.
Background technique
Current intelligent terminal is more and more intelligent, increasingly facilitation, on intelligent terminal charging modes, wireless charging
Mode will replace wired charging method, carry out intelligent terminal charging, and traditional intelligent terminal be usually also integrated with it is a lot of other
Function, for example intelligent terminal is in conjunction with electronic card storage device, and needs are carried, the electronic card being commonly used with
Intelligent terminal is placed together, easy to use, easy to carry, but with the rise of wireless charging technology, if intelligent terminal is in nothing
In line charge electric process, still placement electronic card is extremely easy to cause the demagnetization of electronic card existing near the intelligent terminal
As, so that electronic card cisco unity malfunction, and there are no the product appearance for solving problems on the market at present, therefore need
It is a kind of to provide a kind of relay structure for traditional wireless charging technology, and the relay structure can be realized making for more scenes
With.
Summary of the invention
In order to effectively solve the above problems, the present invention provides a kind of relay system applied to wireless charging.
The specific technical solution of the present invention is as follows: a kind of relay system applied to wireless charging, the relay system packet
Include at least one with receive wireless charging energy first coil and at least one have transmitting wireless charging energy second
Coil；
Wireless charging energy is delivered to by the received wireless charging energy of the first coil institute by high frequency low-resistance circuit
Second coil.
Further, the relay system includes that at least one has the first coil and extremely for receiving wireless charging energy
Few one has the second coil of transmitting wireless charging energy；
Wireless charging energy is delivered to by the received wireless charging energy of the first coil institute by high frequency low-resistance circuit
Second coil；
There is an impedance matching circuit on the high frequency low-resistance circuit.
Further, the impedance matching circuit is a capacitor, the capacitor and the first coil and described second
Coil constitutes impedance matching circuit；
Further, the optimal value C1best of the capacitance C1 of the series resonant capacitance meets following formula:
Wherein the L1r is the inductance value of first coil, and the L1t is the inductance value of the second coil, and the F0 is cooperation
The transmitting coil for the wireless charging transmitter that the relay system uses and the series electrical of the transmitting wireless charging transmitter store
Resonance point.
Further, the quantity of the first coil is one, and the quantity of second coil is one or more, and institute
It states first coil and passes through quantity high frequency low-resistance circuit connection identical with second number of coils.
Further, any one side of the first coil is provided with the first shielded partitions for inhibiting alternating magnetic field；
Any one side of second coil is provided with the secondary shielding partition for inhibiting alternating magnetic field.
Further, first shielded partitions are not small in the plane projection area of the axially vertical plane of first coil group
In the 1/5 of projected area of the first coil on same level；
The secondary shielding partition the axially vertical plane of the second coil group plane projection area not less than described the
The 1/5 of projected area of the two coil on same level.
Further, the shielded partitions include but is not limited to the conductors material such as copper sheet, aluminium flake, iron plate, steel disc.
Further, the shielded partitions include but is not limited to steel disc, iron plate, the conduction of copper and iron multiple layer combination and magnetic conduction material
Material.
Further, the first shielded partitions conductor material and the secondary shielding partition conductor material pass through high frequency
Low-resistance circuit or conducting wire realize electrical connection.
Further, two groups of conductive and conductor materials are real by the conduction of high frequency low-resistance and the material of the magnetic conduction of high frequency low-resistance
Now connect.
Further, the high frequency low-resistance circuit includes the Litz line that at least a piece of copper foil, multiply enameled wire are done；
The Litz line uses parallel, multiple twin, coaxial, overlapping, shuffling form to realize, and the thickness H of the every copper foil,
Wireless charging high-frequency ac electric frequency is on its surface when the radius d of the conductor of enameled wire in Litz line is less than or equal to wireless charging
Form the thickness h of skin effect layer.
A kind of relay of wireless charging, applied to above-mentioned relay system, the relay includes at least one
Shell, the shell is used to coat the structure of the relay system, and the shell is made into the form used for convenience.
Usefulness of the present invention: a kind of relay system applied to wireless charging of the present invention, the relaying are applied
System provides the trunking solution in a kind of conventional wireless charging process, and the program has extremely more usage scenarios, can
Realize the charge requirement of the different shape of load to be charged.
Detailed description of the invention
Fig. 1 is the first use state diagram of first embodiment of the invention；
Fig. 2 is the second use state diagram of first embodiment of the invention；
Fig. 3 is the third use state diagram of first embodiment of the invention；
Fig. 4 is the internal structure side view of second embodiment of the invention；
Fig. 5 is the internal structure broken away view of second embodiment of the invention；
Fig. 6 is the Structure explosion diagram of third embodiment of the invention；
Fig. 7 is the internal structure side view of third embodiment of the invention；
Fig. 8 is the internal structure cross-sectional view of fourth embodiment of the invention；
Fig. 9 is the structural schematic diagram of fifth embodiment of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.
On the contrary, the present invention covers any substitution done on the essence and scope of the present invention being defined by the claims, repairs
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to of the invention thin
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
The present invention can also be understood completely in description.
It as shown in Figure 1, 2, 3, is the overall structure of first embodiment of the invention under different usage scenarios and use state
Schematic diagram, this embodiment offers a kind of relay system applied to wireless charging, the relay system is applied to have nothing
On the intelligent terminal of line charge Electricity Functional or other devices with wireless charging function, or a wireless charging function is provided separately
Structure on, and carry out cooperating with external wireless charging equipment, the wireless charging device be this field it is conventional, can be right
Intelligent terminal or load to be charged carry out the device of wireless charging, are not specifically limited herein.The intelligent terminal packet
It includes but is not limited to have the digital products such as the mobile phone of wireless charging function, Intelligent flat；
The relay system includes that at least one has the first coil 4 for receiving wireless charging energy and at least one tool
There is the second coil 5 of transmitting wireless charging energy；
The 4 received wireless charging energy of institute of first coil is conveyed wireless charging energy by high frequency low-resistance circuit 6
To second coil 5.
The quantity of the first coil 4 is one or more, and the quantity of second coil 5 is one or more, and institute
First coil 4 is stated to connect by quantity high frequency low-resistance circuit 6 identical with 5 quantity of the second coil.
When 4 quantity of first coil is one, most preferred second coil, 5 quantity is one, therefore is only led to
A high frequency low-resistance circuit 6 is crossed to connect；
When 4 quantity of first coil is multiple, 5 quantity of most preferably the second coil and the first coil 4
Quantity it is consistent, and realize connected by high frequency low-resistance circuit 6 respectively；
The first coil 4 and the arrangement form of second coil 5 do not do specific limit, it can be achieved that same flat
On face, structural form on a different plane is also may be implemented in orthogonal plane or can realized；
As shown in figure 4, for the of a kind of specific structure of the relay system applied to wireless charging provided by the present invention
The structural schematic diagram of two embodiments, the present embodiment is identical as above-described embodiment content part, will not be described in great detail herein, only difference
Being in, the relay system includes first panel 1, second panel 2 and notch 3, the first panel 1 and the second face
Plate 2 is arranged in parallel, and there is clearance distance between the two, the notch 3 that can accommodate electronic card is formed, at this
In embodiment, all sides of the first panel 1 and second panel 2, which mutually integrally connect, to be set, and the first panel 1 and the second face
Plate 2 is interconnected towards opening face, the opening face and the notch 3 is formed between width direction；
In other embodiments, it is understood that be structure as a whole for the first panel 1 with second panel 2, and wherein
Side side towards sunken inside, form a notch 3.The electronic card has electronics to be common on the market
Any card structure of store function, such as credit card, the electronic cards such as bank card.
The first panel 1 is mutually fixedly set with intelligent terminal backboard, and the fixed setting mode includes but is not limited to
The fixed forms such as bonding；
As shown in figure 5, the card cover device further includes repeating coil component, the repeating coil component includes described first
Coil 4, second coil 5, are specially provided with the second coil 5 in first panel 1；It is provided in the second panel 2
First coil 4, the first coil 4 are serially connected electrics connection with second coil 5, the specially described first coil 4 and
Second coil 5 is connected to by the first high frequency low-resistance circuit 6；
Second coil 5, is arranged in parallel in the first panel 1 and second panel 2 first coil 4 respectively, is protected
Demonstrate,proving electronic card receiving setting will not be directly through magnetic induction line by electromagnetic effect in notch 3.
The course of work: can accommodate electronic card during wireless charging and be arranged in notch 3, the cutting ferrule dress
It sets when receiving the emitted energy of external wireless charging equipment, the first coil 4 receives the alternating current of external emission coil,
Electric current is transferred in second coil 5 by the first coil 4 by the conductor circuit of high frequency low-resistance, second coil 5
Continue to carry out wireless charging to intelligent terminal, so that electronic card will not guarantee electricity directly through magnetic induction line by electromagnetic effect
The magnetism of subcard piece, entire card cover device constitute wireless charging " alternating magnetic field-First Line that wireless charging transmitter coil generates
The wireless relay charging circuit of alternating magnetic field-wireless charging receiver alternating current of the-the second coil of alternating current 5 of circle 4 ".
It as shown in Figure 6,7, is a kind of 3rd embodiment of the relay system applied to wireless charging provided by the present invention
Structural schematic diagram, the present embodiment is identical as above-described embodiment content part, will not be described in great detail herein, only the difference is that,
The repeating coil component further includes the shielded partitions 7 for inhibiting alternating magnetic field, and second coil 5 is in contrast to intelligent terminal
The side of backboard is provided with shielded partitions 7, and the side of first coil 4 towards the intelligent terminal is provided with shielded partitions 7, phase
When being respectively arranged with shielded partitions 7 in the two sides of the notch 3, guarantees that electronic card accommodates and be arranged in notch 3
It is interior, and the interference effect that not will receive wireless electromagnetic is between two shielded partitions 7, it is more in line with the technological process of production, it can
Quick volume-produce.
As shown in figure 8, being a kind of fourth embodiment of the relay system applied to wireless charging provided by the present invention
Structural schematic diagram, the present embodiment is identical as above-described embodiment content part, will not be described in great detail herein, only the difference is that, institute
Stating shielded partitions 7 includes but is not limited to the conductors materials such as copper sheet, aluminium flake, iron plate, steel disc；
The area A that the outer profile projected in the vertical plane of the axis of spiral winding of the conductor material in coil group surrounds
Not less than the 1/5 of the area B that the outer profile that coil group projects on same level surrounds.
Two groups of conductor materials realize electrical connection by the second high frequency low-resistance circuit 8 or conducting wire, for reducing
EMC。
In the fourth embodiment of the present invention, the fourth embodiment is identical as above-mentioned major part, only the difference is that,
The shielded partitions 7 include but is not limited to steel disc, iron plate, copper and iron multiple layer combination conductor material；
The area A that the outer profile projected in the vertical plane of the axis of spiral winding of the conductor material in coil group surrounds
Not less than the 1/5 of the area B that the outer profile that coil group projects on same level surrounds.
The conduction and the material of the magnetic conduction of high frequency low-resistance that above-mentioned two groups conductive and permeability magnetic materials pass through the second high frequency low-resistance circuit 8
Expect that X realizes connection, for reducing EMC and magnetic field exposure.
X can allow the structure formed between X after two groups conductive and permeability magnetic material connection, in wireless charging transmitter or
When a certain axial plane (plane namely cut out along the axis) space of the spiral winding of receiver is overlapping, overlaps and generate closure
Curve.It realizes the surface equipotentiality body close to electric field and magnetic field, is realized after two groups conductive and permeability magnetic material connection in other words between X
Structure internal electric field and the magnetic field of formation are close to zero, and further the object in structure are protected not to be disturbed.
In other embodiments, the cable for realizing the electrical connection of two repeating coils is the first high frequency low-resistance circuit 6, realizes two
A conductive material, or conductive and permeability magnetic material cable is the second high frequency low-resistance circuit 8, the first high frequency low-resistance circuit 6, second is high
The Litz line that frequency low-resistance circuit 8 can do for copper foil, multiply enameled wire, using parallel, multiple twin, coaxial, overlapping, shuffling form
It realizes, and the radius d of the enameled wire in thickness H, Litz line of copper foil is less than or equal to wireless charging high-frequency ac when wireless charging
Electric frequency is formed on its surface the thickness h of skin effect layer；
Its medium-high frequency low-resistance circuit 8 has been carried out corresponding disclosure to invent the patented technology of institute's earlier application；
As shown in figure 9, being a kind of 5th embodiment of the relay system applied to wireless charging provided by the present invention
Structural schematic diagram, the present embodiment is identical as above-described embodiment content part, will not be described in great detail herein, only the difference is that,
A series resonant capacitance 9 is provided on the first high frequency low-resistance circuit 6 or the second high frequency low-resistance circuit 8, the series connection is humorous
Capacitor 9 and the first coil 4 of shaking and the second coil 5 constitute impedance matching circuit, can reduce power caused by relay system
Loss；
And the capacitance C of concatenated series resonant capacitance 91Will close to or meet following condition, deviation is in 30%-
Between 300%:
The coil L for the transmitter for cooperating relay system of the present invention to use0With the series resonant capacitance C of the same transmitter0It deposits
In a resonant frequency point F0, F0Value obtained by LC series resonance center frequency points calculation formula, the formula are as follows:
And there is also LC series resonance center frequency points F for relay system in the present invention1, and F1=F0Or F1≈F0, wherein
F1=F0It is optimal setting, therefore C1Optimal value C1The value of best (is received by repeating coil L1r, can also be interpreted as first
Coil 4), L1t (transmitting, the second coil 5 can also be interpreted as) and series resonance center frequency points F0It codetermines:
In C1Less than C1When best, transfer efficiency can increase slightly in transmission, but the power transmitted can be substantially reduced；
In C1Greater than C1When best, the transfer efficiency in transmission can be substantially reduced, and the power transmitted can be remained unchanged or be dropped
It is low.
In the present embodiment, the transfer impedance and transmitter of relay system be can be realized by increasing impedance matching circuit
Transfer impedance is consistent or close consistent, to reduce power loss caused by relay system.Using relay system of the present invention
When, it can be realized plurality of application scenes, and during wireless charging, corresponding wireless charging relaying action be provided, can be corresponded to
Scene applied to consumer products such as credit card cases；
1) the application card cover device provided by the present invention with relay system can be by wireless charging energy relay, realization pair
The wireless charging of intelligent terminal；
2) electronic card can be temporarily plugged in the notch 3 by user, and intelligent terminal is followed to be convenient for carrying together,
When needing that electronic card is used alone, it is only necessary to card is released into the notch 3, can be realized the electronic card with
The separation of card cover device, and since the electronic card position is between two shielded partitions 7, nothing is being carried out to intelligent terminal
It does not interfere, damage when line charge electricity, not influencing this electronic card.
For the ordinary skill in the art, introduction according to the present invention, do not depart from the principle of the present invention with
In the case where spirit, changes, modifications, replacement and the deformation that embodiment is carried out still fall within protection scope of the present invention it
It is interior.
Claims (14)
1. a kind of relay system applied to wireless charging, which is characterized in that the relay system include at least one have connect
Receive the first coil and at least one second coil with transmitting wireless charging energy of wireless charging energy；
Wireless charging energy is delivered to described by the received wireless charging energy of the first coil institute by high frequency low-resistance circuit
Second coil.
2. a kind of relay system applied to wireless charging according to claim 1, which is characterized in that the relay system
Including at least one with the first coil for receiving wireless charging energy and at least one there is the of transmitting wireless charging energy
Two coil；
Wireless charging energy is delivered to described by the received wireless charging energy of the first coil institute by high frequency low-resistance circuit
Second coil；
There is an impedance matching circuit on the high frequency low-resistance circuit.
3. a kind of relay system applied to wireless charging according to claim 2, which is characterized in that the impedance matching
Circuit is that at least one series resonant capacitance, the capacitor and the first coil and second coil constitute impedance matching electricity
Road.
4. a kind of relay system applied to wireless charging according to claim 2, which is characterized in that the series resonance
The capacitance C of capacitor1Are as follows:
Wherein, L1r is the inductance value of first coil, and the L1t is the inductance value of the second coil, the F0For with cooperate it is described in
After the inductance value L of the transmitting coil for the wireless charging transmitter that system uses0With the series electrical of the transmitting wireless charging transmitter
The capacitance C of appearance0Form the value F of the resonance center frequeH point of series resonant circuit0。
5. a kind of relay system applied to wireless charging according to claim 4, which is characterized in that the series resonance
The capacitance C1 of capacitor are as follows:
6. a kind of relay system applied to wireless charging described in -5 according to claim 1, which is characterized in that the First Line
The quantity of circle is one, and the quantity of second coil is one or more, and the first coil passes through quantity and described the
The identical high frequency low-resistance circuit connection of two coil quantity.
7. a kind of relay system applied to wireless charging described in -5 according to claim 1, which is characterized in that the First Line
It encloses any one side and is provided with the first shielded partitions for inhibiting alternating magnetic field；
Any one side of second coil is provided with the secondary shielding partition for inhibiting alternating magnetic field.
8. a kind of relay system applied to wireless charging according to claim 7, which is characterized in that first shielding
Partition is not less than the first coil on same level in the plane projection area of the axially vertical plane of first coil group
The 1/5 of projected area；
The secondary shielding partition is not less than second line in the plane projection area of the axially vertical plane of the second coil group
Enclose 1/5 of the projected area on same level.
9. a kind of relay system applied to wireless charging according to claim 7, which is characterized in that the shielded partitions packet
Include but be not limited to the conductors material such as copper sheet, aluminium flake, iron plate, steel disc.
10. a kind of relay system applied to wireless charging according to claim 7, which is characterized in that the shielded partitions
Including but not limited to steel disc, iron plate, the conduction of copper and iron multiple layer combination and permeability magnetic material.
11. according to a kind of relay system applied to wireless charging of claim 9 or 10, which is characterized in that described
One shielded partitions conductor material is electrically connected with the secondary shielding partition conductor material by high frequency low-resistance circuit or conducting wire realization
It connects.
12. according to a kind of relay system applied to wireless charging of claim 9 or 10, which is characterized in that two groups conductive
And conductor material is realized with the material of the magnetic conduction of high frequency low-resistance by the conduction of high frequency low-resistance and is connected.
13. according to claim 1-12 it is one of any described in a kind of relay system applied to wireless charging, which is characterized in that institute
Stating high frequency low-resistance circuit includes the Litz line that at least a piece of copper foil, multiply enameled wire are done；
The Litz line is realized using parallel, multiple twin, coaxial, overlapping, shuffling form, and thickness H, Litz of the every copper foil
Wireless charging high-frequency ac electric frequency is formed on its surface when the conductor radius d of enameled wire in line is less than or equal to wireless charging
The thickness h of skin effect layer.
14. a kind of relay of wireless charging, applied to the claims 1-12 it is one of any described in relay system,
It being characterized in that, the relay includes at least one shell, and the shell is used to coat the structure of the relay system, and
The shell is made into the form used for convenience.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019101903696 | 2019-03-13 | ||
| CN201910190369 | 2019-03-13 |
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| CN109888881A true CN109888881A (en) | 2019-06-14 |
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| CN112952948A (en) * | 2021-03-04 | 2021-06-11 | 吉成无线（深圳）有限公司 | Control method of remote self-adaptive wireless charging system and wireless charger |
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| WO2022258909A1 (en) * | 2021-06-07 | 2022-12-15 | Centiloc | Near-field communication magnetic field repeater device |
| CN117458727A (en) * | 2023-11-08 | 2024-01-26 | 荣耀终端有限公司 | Protective housing and wireless charging system |
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| WO2022258909A1 (en) * | 2021-06-07 | 2022-12-15 | Centiloc | Near-field communication magnetic field repeater device |
| CN117458727A (en) * | 2023-11-08 | 2024-01-26 | 荣耀终端有限公司 | Protective housing and wireless charging system |
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