CN209729695U - A kind of high-power wireless charge coil structure - Google Patents
A kind of high-power wireless charge coil structure Download PDFInfo
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- CN209729695U CN209729695U CN201920866605.7U CN201920866605U CN209729695U CN 209729695 U CN209729695 U CN 209729695U CN 201920866605 U CN201920866605 U CN 201920866605U CN 209729695 U CN209729695 U CN 209729695U
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Abstract
The utility model discloses a kind of high-power wireless charge coil structures.It includes that multiple winding directions are consistent, the number of turns is consistent, structure and the consistent transmitting coil of area, at least one group parallel edges in each transmitting coil, arrangement is bonded between the parallel edges of adjacent transmitting coil, each transmitting coil access phase is consistent and the consistent alternating current of intensity, it further include the receiving coil that all transmitting coils can be completely covered, receiving coil, which can converge, receives the energy that transmitting coil emits jointly.After above-mentioned structure, make the consistent magnetic field of the magnetic direction issued when multiple transmitting coil parallel connections, so as to be received by a receiving coil, it realizes and generates bigger power by way of in parallel compared with small wireless transmitter with multiple power, break through the power limit of single wireless transmitter, to make wireless charging power be greatly improved, while mitigating single transmitting coil power pressure, total wireless charging power can be increased substantially.
Description
Technical field
The utility model relates to a kind of charge coil structure, specifically a kind of high-power wireless charge coil structure.
Background technique
In wireless charging structure, a transmitting coil can only correspond to a receiving coil, a transmitting coil hair simultaneously
Magnetic field energy out can only also be received by a receiving coil, and the maximum power of single transmitting coil determines entire wireless charging
The maximum power of device, although some mobile phones are three-winding or multi-thread coil structures, being still when working can only a coil work
Make, do not accomplish a receiving coil while receiving the magnetic field energy that multiple coils issue；In the application of electric car wireless charging,
Also can only a receiving coil can only receive a transmitting coil sending magnetic field energy, cannot a coil converge simultaneously
The poly- magnetic field energy for receiving multiple transmitting coils；Thus bring a problem conventional at present, the maximum charge of wireless charging
Power is limited by single transmitting coil emissivities, and the maximum power of wireless charging is extremely difficult to the maximum work of wired charging
Rate；Especially high-power wireless charging unit realizes the wireless charging of relatively high power by single wireless transmission coil, very tired
Difficulty, for example by the wireless charging of single coil realization 50KW or more power, technical difficulty is very high, and it is steady not can guarantee work yet
It is qualitative.
When needing to carry out high-power wireless transmission, the requirement to transmitting coil is very high.Since wireless transmission uses high frequency
The alternating current of rate, when high-frequency alternating current transmits in conducting wire, it may appear that skin effect, higher with frequency, skin effect is got over
Seriously, when high-frequency alternating current being caused to transmit in conducting wire, electric action only is played on the surface of conducting wire, causes plain conductor
Resistance is excessive for high-frequency current.According to skin effect calculation formula,Δ --- penetration depth (m),
ω——Angular frequency, the π of ω=2 f (rad/s), f are field frequency, μ --- magnetic conductivity (H/m), γ --- conductivity (S/m), one
As for, wireless charging has optimal radio transmission efficiency in 85KHz, according to calculating, in 85KHz, copper conductor only table
The depth of face 0.2mm or so can conducting electric current, no current passes through inside conducting wire.Therefore it when transmission high-frequency current, needs to use
Multiply enameled wire and dedicated high-frequency line around mode, are also litz wire, when carrying out high power transmission, for example need to transmit 50KW
When the above power, the peak values of ac electric current of coil inside can be more than 300 amperes, so big electric current, the requirement to high-frequency line
High, coil diameter, which needs to reach 3 lis or more, just can guarantee that coil only distributes heat, and so thick multiply coil, on the one hand
The conducting wire heat dissipation of multiply coil inside is difficult, will form thermal accumlation, and the heatproof of enameled wire is usually no more than 200 degree, when super
When crossing this temperature, meeting adhesion between high-frequency line multiply causes the reduction of high frequency conductive capability, can more aggravation fever or even high frequency lead
The failure of electric energy power, on the other hand will lay out the coil of the inductance more than 100uH within the scope of one square metre, extremely difficult,
That is high-power wireless transmission is extremely difficult when single coil carries out wireless energy transfer, and that it is almost impossible is super
Cross the wireless energy transfer of 100KW.
Summary of the invention
The technical problem to be solved by the present invention is to provide the power limits that one kind can break through single wireless transmitter
High-power wireless charge coil structure.
In order to solve the above-mentioned technical problem, the high-power wireless charge coil structure of the utility model, including multiple windings
Direction is consistent, the number of turns is consistent, structure and the consistent transmitting coil of area, and at least one group is parallel in each transmitting coil
Side, is bonded arrangement between the parallel edges of adjacent transmitting coil, and each transmitting coil access phase is consistent and the consistent friendship of intensity
Galvanic electricity further includes the receiving coil that all transmitting coils can be completely covered, and it is total that receiving coil can converge reception transmitting coil
With the energy of transmitting.
The back magnetic sheet covering that the back side of the transmitting coil is constituted using Ferrite Material.
The outer layer of the back magnetic sheet covers one layer for shielding the back aluminium sheet of external magnetic force line again.
The outer magnetic sheet covering that the lateral surface of the receiving coil is constituted using Ferrite Material.
The outer layer of the outer magnetic sheet covers one layer for shielding the outer aluminium sheet of external magnetic force line again.
The receiving coil and/or transmitting coil are formed using multiply enameled wire or flat type copper wire coiling.
The receiving coil and/or transmitting coil are rectangle, trapezoidal or parallelogram sturcutre.
The receiving coil is set as one, the area and specification of the receiving coil and all total specifications of transmitting coil with
And area summation is consistent.
The receiving coil is set as multiple, and the gross area of multiple receiving coils and total specification and all transmitting coils are total
Specification and area summation are consistent.
After above-mentioned structure, since multiple winding directions of setting are consistent, the number of turns is consistent, structure is consistent with area
And the transmitting coil being bonded to each other, each transmitting coil access phase is consistent and the consistent alternating current of intensity, thus dexterously disappears
Except the magnetic field contrary with respective transmitting coil internal magnetic field between adjacent transmitting coil, the magnetic that adjacent coil issues is realized
Field direction is identical, becomes a magnetic field entirety, so that the magnetic field of any number of transmitting coils is together in parallel, allows multiple emission lines
Circle issues magnetic field in parallel, achievees the purpose that transmitting coil parallel connection, makes the magnetic direction one issued when multiple transmitting coil parallel connections
, with multiple transmitting coils come equalization of incidence general power, multiple function are realized so as to be received by a receiving coil in the magnetic field of cause
Rate generates bigger power by way of in parallel compared with small wireless transmitter, breaks through the power limit of single wireless transmitter, from
And wireless charging power is made to be greatly improved, and while mitigating single transmitting coil power pressure, total wireless charging
Power can increase substantially；In addition, same parallel-connection structure design can be used in receiving coil, charging function is further improved
Rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of transmitting coil in the utility model embodiment one；
Fig. 2 is the structural schematic diagram of transmitting coil in the utility model embodiment two；
Fig. 3 is the structural schematic diagram of transmitting coil in the utility model embodiment three；
Fig. 4 is the structural schematic diagram of transmitting coil in the utility model embodiment four.
Specific embodiment
With reference to the accompanying drawings and detailed description, the high-power wireless charge coil structure of the utility model is made into one
Step is described in detail.
Embodiment one:
As shown in Figure 1, the high-power wireless charge coil structure of the present embodiment, including two winding directions are consistent, the number of turns
Unanimously, the transmitting coil 1 of structure and the consistent rectangular configuration of area, it is more that each transmitting coil is all made of high-frequency litz wire multi-turn
Layer coiling forms, and uses the power on the characteristics of straight wire generates magnetic field, the magnetic that the opposite parallel electromotion straight wire of current direction generates
Field direction is on the contrary, compact arranged two current directions are opposite and current strength is identical and conducting wire does not generate magnetic field externally, general
The edge fitting of two transmitting coils 1 is arranged and joint place is very close to each other, specifically arranges between every circle of transmitting coil
Closely, the entirety of transmitting coil occupies smaller horizontal direction area as far as possible, when two transmitting coil parallel connections, connects coil is adjacent
Touching side contact closely as far as possible, and horizontal space is small as far as possible, and two transmitting coils 1 access phases are consistent and the consistent alternating current of intensity,
The back magnetic sheet covering that the back side of all transmitting coils 1 is constituted using Ferrite Material, the outer layer for carrying on the back magnetic sheet cover one layer of use again
It further include a receiving coil made of high-frequency litz wire multiple turn, multiple layer coiling in the back aluminium sheet of shielding external magnetic force line,
The area and specification (winding direction, the number of turns and shape) and all total specifications of transmitting coil and area of the receiving coil are total
With it is consistent, so as to which the receiving coil of all transmitting coils is completely covered, which can converge reception transmitting coil
The energy emitted jointly, the outer magnetic sheet covering that the lateral surface of the receiving coil is constituted using Ferrite Material, the outer layer of outer magnetic sheet
One layer is covered again for shielding the outer aluminium sheet of external magnetic force line.
Embodiment two:
As shown in Fig. 2, the high-power wireless charge coil structure of the present embodiment, including three winding directions are consistent, the number of turns
Unanimously, structure and the consistent trapezium structure transmitting coil 1 of area, each transmitting coil are all made of flat type copper wire coiling and form, and three
The edge fitting of the parallel edges of a transmitting coil 1 is arranged and joint place is very close to each other, that is to say, that adjacent transmitting coil
Contact edge is in close contact, when the consistent electric current of and current strength consistent in adjacent transmitting coil access phase, simultaneously because line
It is identical to enclose the number of turns, using adjacent straight wire magnetic principles, does not generate external magnetic field substantially on the adjacent side of two transmitting coils, also
Including three receiving coils made of flat type copper wire coiling, the edge fitting of three receiving coils is arranged and joint place does not have
Gap, the area and specification (winding direction, the number of turns and shape) of three receiving coils and all transmitting coil specifications and
Area is consistent, and so as to which the receiving coil of all transmitting coils is completely covered, three receiving coils can converge reception transmitting
The energy that coil emits jointly, the outer magnetic sheet covering that the lateral surface of three receiving coils is constituted using Ferrite Material, outer magnetic sheet
Outer layer cover one layer again for shielding the outer aluminium sheet of external magnetic force line.
Embodiment three:
As shown in figure 3, the high-power wireless charge coil structure of the present embodiment, including three winding directions are consistent, the number of turns
Unanimously, structure and the consistent parallelogram sturcutre transmitting coil 1 of area, each transmitting coil be all made of multiply enameled wire around
It makes, the edge of the parallel edges of three transmitting coils 1 fits closely arrangement and joint place is very close to each other, that is to say, that three
The parallel edges of transmitting coil 1 is close together completely, and three transmitting coils 1 access that phases are consistent and the consistent exchange of intensity
Electricity, the back magnetic sheet covering that the back side of all transmitting coils 1 is constituted using Ferrite Material, absorbs the magnetic force at transmitting coil back
Line further includes a receiving coil using the coiling of multiply enameled wire, area and specification (winding direction, circle of the receiving coil
Several and shape) it is consistent with the total specification of all transmitting coils and area summation, so as to which all emission lines are completely covered
The receiving coil of circle, which, which can converge, receives the energy that transmitting coil emits jointly, the lateral surface of the receiving coil
The outer magnetic sheet covering constituted using Ferrite Material, is designed, with this configuration after multiple transmitting coils are in parallel, it will be able to be realized big
The wireless transmission of power, and the burden of each wireless transmission coil or receiving coil can be much smaller, carries out high-power wireless transmission
Better effect can realize more powerful wireless transmission with lower-powered coil, can also reduce the electric current pressure of each coil
Power.
Example IV:
As shown in figure 4, the high-power wireless charge coil structure of the present embodiment, including four winding directions are consistent, the number of turns
Unanimously, the transmitting coil 1 of structure and the consistent rectangular configuration of area, each transmitting coil be all made of the coiling of multiply enameled wire and
At the edge of four transmitting coils 1 is bonded to each other arrangement two-by-two and joint place is very close to each other, and a large area is consequently formed
Rectangular configuration, four transmitting coils 1 access that phases are consistent and the consistent alternating current of intensity, further include one and use multiply enameled wire
Receiving coil made of coiling, the area and specification (winding direction, the number of turns and shape) of the receiving coil and all transmittings
The total specification of coil and area summation are consistent, so as to which the receiving coil of all transmitting coils is completely covered, the receiving coil
It can converge and receive the energy that transmitting coil emits jointly, achieve the effect that transmitting coil parallel connection, design with this configuration, it can
By way of in parallel, the magnetic field energy that each coil issues is together in parallel, realizes what a phase summarized, has greater strength
The magnetic field of bigger energy, and receiving coil realizes the wireless energy transfer of higher power also by the mode of same parallel connection, breaks through
The power limit of wireless energy transfer reduces technical difficulty and cost.
The realization principle of the utility model is as follows:
According to the Ampere's law right-hand rule, when in conducting wire through the electric current of variation, magnetic field, magnetic can be formed around conducting wire
The direction of field is determined by current direction, between the adjacent circle of coil, since current direction is identical, and the magnetic direction of their generations
It is identical.In general, the magnetic direction that the coil of plane winding generates is along the online panel surface of plane distribution, and direction is according to electricity
Direction is flowed, panel surface center inwardly or outwardly, forms the closure magnetic line of force, each planar line in the upper and lower surface of plane drum along the line
The magnetic field of disk is contrary with coil outer inside hub of a spool；In this way, that each planar coil is the only of a closure
Vertical field region, can not be in parallel；The utility model uses special structure, and adjacent coil is accessed the consistent exchange of phase
Electricity, multiple coils close-packed arrays in the same plane, contrary magnetic field is generated using electric current contrary between coil,
The opposite magnetic fields of bucking coil binding site, two such coil inside direction do not have backing field between consistent magnetic field,
To realize the superposition in two magnetic field, briefly, by the processing to coil edge, offsetting the edge should be generated
, the magnetic field contrary with coil inside realizes that the magnetic direction between two adjacent coils is consistent, without should
Multi-coil parallel connection is realized by this principle in the contrary magnetic field that coil outside edges generate.
Claims (9)
1. a kind of high-power wireless charge coil structure, it is characterised in that:, the number of turns consistent including multiple winding directions be consistent, knot
Structure and the consistent transmitting coil (1) of area, at least one group parallel edges in each transmitting coil (1), adjacent transmitting
It is bonded arrangement between the parallel edges of coil (1), each transmitting coil (1) access phase is consistent and the consistent alternating current of intensity
It (2), further include the receiving coil that all transmitting coils can be completely covered, the receiving coil can converge reception transmitting coil
The energy emitted jointly.
2. high-power wireless charge coil structure described in accordance with the claim 1, it is characterised in that: the transmitting coil (1)
The back magnetic sheet covering that the back side is constituted using Ferrite Material.
3. high-power wireless charge coil structure according to claim 2, it is characterised in that: the outer layer of the back magnetic sheet is again
One layer of covering for shielding the back aluminium sheet of external magnetic force line.
4. high-power wireless charge coil structure described in accordance with the claim 1, it is characterised in that: the outside of the receiving coil
The outer magnetic sheet covering that face is constituted using Ferrite Material.
5. high-power wireless charge coil structure according to claim 4, it is characterised in that: the outer layer of the outer magnetic sheet is again
One layer of covering for shielding the outer aluminium sheet of external magnetic force line.
6. high-power wireless charge coil structure described in accordance with the claim 1, it is characterised in that: the receiving coil and/or
Transmitting coil is formed using multiply enameled wire or flat type copper wire coiling.
7. high-power wireless charge coil structure described in accordance with the claim 1, it is characterised in that: the receiving coil and/or
Transmitting coil is rectangle, trapezoidal or parallelogram sturcutre.
8. according to high-power wireless charge coil structure described in one of claim 1-7, it is characterised in that: the receiving coil
It is set as one, the area and specification of the receiving coil are consistent with the total specification of all transmitting coils and area summation.
9. according to high-power wireless charge coil structure described in one of claim 1-7, it is characterised in that: the receiving coil
It is set as multiple, the gross area of multiple receiving coils and total specification and the total specification of all transmitting coils and area summation one
It causes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920866605.7U CN209729695U (en) | 2019-06-10 | 2019-06-10 | A kind of high-power wireless charge coil structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920866605.7U CN209729695U (en) | 2019-06-10 | 2019-06-10 | A kind of high-power wireless charge coil structure |
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| CN209729695U true CN209729695U (en) | 2019-12-03 |
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| CN201920866605.7U Active CN209729695U (en) | 2019-06-10 | 2019-06-10 | A kind of high-power wireless charge coil structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315262A (en) * | 2021-05-10 | 2021-08-27 | 深圳蓝色海洋工程发展有限公司 | Structure for wirelessly charging moving object |
| CN113629893A (en) * | 2021-07-28 | 2021-11-09 | 广西电网有限责任公司电力科学研究院 | Wireless charging coupling mechanism, wireless power transmission system and method |
-
2019
- 2019-06-10 CN CN201920866605.7U patent/CN209729695U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315262A (en) * | 2021-05-10 | 2021-08-27 | 深圳蓝色海洋工程发展有限公司 | Structure for wirelessly charging moving object |
| CN113629893A (en) * | 2021-07-28 | 2021-11-09 | 广西电网有限责任公司电力科学研究院 | Wireless charging coupling mechanism, wireless power transmission system and method |
| WO2023005625A1 (en) * | 2021-07-28 | 2023-02-02 | 广西电网有限责任公司电力科学研究院 | Wireless charging coupling mechanism, and wireless power transmission system and method |
| CN113629893B (en) * | 2021-07-28 | 2023-08-22 | 广西电网有限责任公司电力科学研究院 | Wireless charging coupling mechanism, wireless power transmission system and method |
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