CN215580559U - Wireless charging electromagnetic positioning structure, wireless charging module and wireless charger - Google Patents
Wireless charging electromagnetic positioning structure, wireless charging module and wireless charger Download PDFInfo
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Abstract
The utility model provides a wireless charging electromagnetic positioning structure, a wireless charging module and a wireless charger, which comprise a first magnet and a magnetic conductive sheet; the magnetic conductive sheet is attached to one side of the first magnet; through introducing the magnetic conductive plate in magnetism location structure to laminate in the location magnet design, can focus on the magnetic line of force, shorten the magnetic path length that location magnet produced the magnetic line of force, reduce location magnet's magnetic leakage, increase magnetism location structure's magnetic field intensity, thereby can further realize the accurate location of transmitting terminal and the wireless charging coil of receiving terminal, effectively improve coil coupling coefficient, improve charge efficiency.
Description
Technical Field
The utility model relates to the technical field of wireless charging magnetic positioning, in particular to a wireless charging magnetic positioning structure, a wireless charging module and a wireless charger.
Background
The wireless charging technology is a non-contact charging technology which transmits energy of a transmitting end to a receiving end through inductive coupling by utilizing a coil coupling technology. Due to the advantages of convenience, intelligence and diversification, the popularization rate of wireless charging products is higher and higher, and the wireless charging products become a part of the life of people more and more.
With the rapid development of consumer electronics, higher requirements are put on wireless charging technology. Including wireless charging efficiency issues. Charging efficiency is one of the important indicators for evaluating the performance of wireless charging products. The higher the charging efficiency, the faster the charging speed, the lower the energy loss, and the better the performance of the charging module. The factors influencing the wireless charging efficiency are many, and the wireless charging coil design, the wireless charging are promoted by the performance of the magnetic isolation sheet material, the overall structure of the module is optimized, and the like. In addition, the key point influencing the wireless charging efficiency is the position alignment of the coil when the transmitting end and the receiving end are coupled for charging.
The magnetic positioning technology is the most convenient and effective positioning technology at present and is gradually applied to the wireless charging technology, but the magnetic positioning technology applied to the wireless charging at present is single in mode, and only the initial matching of the coil position can be realized.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a wireless electromagnetism location structure, wireless module and wireless charger that charge, can realize the accurate location between the wireless charging coil, effectively improve coil coupling coefficient, improve charge efficiency.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a wireless charging electromagnetic positioning structure comprises a first magnet and a magnetic conductive sheet;
the magnetic conductive sheet is attached to one side of the first magnet.
Further, the material of the magnetic conductive sheet comprises a silicon steel sheet, low-carbon steel, stainless steel, ferrite or a metal powder core.
Further, the magnetizing direction of the first magnet is perpendicular to the plane of the wireless charging coil.
Further, the first magnet comprises more than two second magnets;
the more than two second magnets are arranged around the wireless charging coil.
Further, the magnetizing directions of the second magnets are the same.
Further, the two or more second magnets are spliced into a ring shape.
Further, the adjacent second magnets are tightly attached to each other.
Further, the first magnet has a through hole.
Further, the shape of the magnetic conductive sheet is matched with the shape of the first magnet.
Further, the magnetic conductive sheet comprises a plurality of sub magnetic conductive sheets;
and the adjacent sub magnetic conductive sheets are tightly attached or provided with first gaps.
In order to solve the technical problem, the utility model adopts another technical scheme as follows:
a wireless module that charges, includes wireless charging coil and the above-mentioned wireless magnetism location structure that charges.
Further, the magnetic shield also comprises a magnetic shield sheet;
the wireless charging coil is attached to one side of the magnetic separation sheet.
Further, a second gap is formed between the first magnet and the magnetic separation sheet;
the magnetic conductive sheet and the magnetic separation sheet are provided with a third gap.
In order to solve the technical problem, the utility model adopts another technical scheme as follows:
a wireless charger comprises a transmitting end and a receiving end;
the transmitting end and the receiving end both comprise the wireless charging module;
the magnetic conductive sheet of the transmitting end is attached to one side, far away from the receiving end, of the first magnet;
the magnetic conductive sheet of the receiving end is attached to one side, far away from the transmitting end, of the first magnet.
Further, one end of the transmitting end and the receiving end omits the magnetic conductive sheet.
Further, the magnetizing direction of the first magnet at the transmitting end is parallel to the magnetizing direction of the first magnet at the receiving end.
The utility model has the beneficial effects that: according to the wireless charging electromagnetic positioning structure, the wireless charging module and the wireless charger, the magnetic conductive sheet is introduced into the magnetic positioning structure and is attached to the positioning magnet, so that the length of magnetic lines of force of the positioning magnet can be shortened, the magnetic lines of force are focused, the magnetic leakage is reduced, the magnetic field intensity of the magnetic positioning structure is increased, the accurate positioning of the wireless charging coil at the transmitting end and the receiving end can be further realized, the coil coupling coefficient is effectively improved, and the charging efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of a wireless charging electromagnetic positioning structure according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wireless charging module according to an embodiment of the utility model;
fig. 3 is a schematic cross-sectional view of a wireless charging module according to an embodiment of the utility model along a vertical direction;
fig. 4 is a schematic view of a shape of a magnetic conductive sheet according to an embodiment of the present invention;
FIG. 5 is a schematic view of another magnetic conductive sheet according to an embodiment of the present invention
Fig. 6 is a schematic structural view of a magnetic conductive sheet according to an embodiment of the present invention;
fig. 7 is a schematic structural view of another magnetic conductive sheet according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a wireless charger according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a sample 1 wireless charger according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a sample 2 wireless charger according to an embodiment of the present invention;
FIG. 11 is a magnetic field line distribution diagram of sample 1 in an example of the present invention;
FIG. 12 is a magnetic field line distribution diagram of sample 2 in an example of the present invention;
FIG. 13 is a graph showing a comparison of magnetic attraction forces of sample 1 and sample 2 in the example of the present invention.
Description of reference numerals:
1. a first magnet; 2. a second magnet; 3. a magnetic conductive sheet; 4. a through hole; 5. a wireless charging coil; 6. a magnetic shield sheet; 7. a third gap; 8. a glue layer; 9. a transmitting end; 10. and (4) receiving the data.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, a wireless charging electromagnetic positioning structure includes a first magnet and a magnetic conductive sheet;
the magnetic conductive sheet is attached to one side of the first magnet.
According to the wireless charging electromagnetic positioning structure, the wireless charging module and the wireless charger, the magnetic conductive sheet is introduced into the magnetic positioning structure and is attached to the positioning magnet, so that magnetic lines of force can be focused, the length of a magnetic circuit of the magnetic lines of force generated by the positioning magnet is shortened, the magnetic leakage is reduced, the magnetic attraction of the magnetic positioning structure is increased, accurate positioning of the wireless charging coil at the transmitting end and the receiving end can be further realized, the coil coupling coefficient is effectively improved, and the charging efficiency is improved.
Further, the material of the magnetic conductive sheet comprises a silicon steel sheet, low-carbon steel, stainless steel, ferrite or a metal powder core.
From the above description, the material of the magnetic conductive sheet can effectively converge the magnetic lines of force that the first magnet diverges outward, thereby focusing magnetic energy, shortening the length of the magnetic circuit, and reducing the magnetic leakage of the magnetic positioning structure.
Further, the magnetizing direction of the first magnet is perpendicular to the plane of the wireless charging coil.
As can be seen from the above description, by setting the magnetizing direction of the first magnet to be perpendicular to the plane of the wireless charging coil, the positioning magnet of the magnetic positioning structure can generate a large magnetic attraction force in the direction perpendicular to the plane of the coupling coil, so that the position alignment of the coupling coil can be more accurately achieved.
Further, the first magnet comprises more than two second magnets;
the more than two second magnets are arranged around the wireless charging coil.
Known by the above-mentioned description, include two above second magnets through setting up first magnet, and set up around wireless charging coil, can adjust the position and the quantity of second magnet in a flexible way in order to improve the magnetic attraction of magnetism location structure to adapt to the wireless module structural design that charges of difference.
Further, the magnetizing directions of the second magnets are the same.
As can be seen from the above description, by setting the magnetizing directions of the second magnets to be the same, the magnetic alignment structure can form more magnetic lines of force in the same direction, so as to increase the density of the magnetic lines of force.
Further, the two or more second magnets are spliced into a ring shape.
Known by the above-mentioned description, through with two above second magnet concatenations form the ring, and the magnetic attraction that can make magnetism location structure's round receive is unanimous to guarantee that the magnetic attraction between transmitting terminal and receiving terminal is even stable, the wireless module atress that charges is even.
Further, the adjacent second magnets are tightly attached to each other.
It can be known from the above-mentioned description, under the certain circumstances of first magnet volume, in order to guarantee the less thickness of magnetism location structure, therefore cross sectional area is great, and the close laminating between the adjacent second magnet can reduce the radial dimension of first magnet to can reduce the whole volume of wireless module of charging, the magnetic line of force that the close laminating also is favorable to producing between the adjacent second magnet is even simultaneously.
Further, the first magnet has a through hole.
As can be seen from the above description, the through hole is formed in the first magnet, so that the coil lead can be led out, and the thickness of the wireless charging module can be reduced.
Further, the shape of the magnetic conductive sheet is matched with the shape of the first magnet.
As can be seen from the above description, the shape of the magnetic conductive sheet and the shape of the first magnet are adapted to each other, so that the area of the magnetic conductive sheet can be ensured to reduce the magnetic leakage of the magnetic positioning structure as much as possible, and the wireless charging module can be ensured to be light and thin.
Further, the magnetic conductive sheet comprises a plurality of sub magnetic conductive sheets;
and the adjacent sub magnetic conductive sheets are tightly attached or provided with first gaps.
As can be seen from the above description, by arranging the magnetic conductive sheet to include a plurality of sub-magnetic conductive sheets, the adjacent sub-magnetic conductive sheets are closely attached or have a gap, so that the diversity and flexibility of magnetic conductive sheet selection are increased.
Referring to fig. 2 and 3, a wireless charging module includes a wireless charging coil and the wireless charging magnetic positioning structure.
Further, the magnetic shield also comprises a magnetic shield sheet;
the wireless charging coil is attached to one side of the magnetic separation sheet.
It can be known from the above description that through setting up the magnetic separation piece can gather together the magnetic flux of induction field between the coupling coil to strengthen the magnetic induction intensity of receiving end coil, simultaneously, reduce electromagnetic signal's decay on the one hand, improve the electromagnetic conversion efficiency in the wireless charging, on the other hand, reduce the magnetic line of force to the electromagnetic interference of other metals and components and parts inside transmitting terminal, receiving terminal.
Further, a second gap is formed between the first magnet and the magnetic separation sheet;
the magnetic conductive sheet and the magnetic separation sheet are provided with a third gap.
According to the description, the first magnet, the magnetic conductive sheet and the magnetic separation sheet are made of magnetic materials, and gaps are reserved between the first magnet and the magnetic conductive sheet and the magnetic separation sheet respectively, so that the magnetic materials can be prevented from contacting, and the influence of the magnetic force lines generated by the positioning magnet on the magnetic flux of the wireless charging coil is greatly reduced.
Referring to fig. 8, a wireless charger includes a transmitting end and a receiving end;
the transmitting end and the receiving end both comprise the wireless charging module;
the magnetic conductive sheet of the transmitting end is attached to one side, far away from the receiving end, of the first magnet;
the magnetic conductive sheet of the receiving end is attached to one side, far away from the transmitting end, of the first magnet.
Known by the above description, through the magnetic conduction piece laminating that sets up the transmitting terminal in one side that the receiving terminal was kept away from to first magnet, the magnetic conduction piece laminating of receiving terminal in one side that the transmitting terminal was kept away from to first magnet, the magnetic conduction piece of both sides can be with the magnetic force line focus of dispersing in magnetism location structure to increase the magnetic attraction of transmitting terminal and receiving terminal.
Further, one end of the transmitting end and the receiving end omits the magnetic conductive sheet.
Further, the magnetizing direction of the first magnet at the transmitting end is parallel to the magnetizing direction of the first magnet at the receiving end.
As can be seen from the above description, by setting the magnetizing direction of the first magnet at the transmitting end and the magnetizing direction of the first magnet at the receiving end to be parallel, the two magnets can form a closed magnetic line, so as to position the wireless charging terminal.
The wireless charging electromagnetic positioning structure, the wireless charging module and the wireless charger are suitable for any application scene needing wireless charging, such as wireless charging of wearable intelligent terminals such as mobile phones, earphones and watches, wireless charging of intelligent homes, wireless charging of electric vehicles and the like, and are explained by specific implementation modes as follows:
the first embodiment of the utility model is as follows:
as shown in fig. 1, a wireless charging electromagnetic positioning structure includes a first magnet 1 and a magnetic conductive sheet 3;
the magnetic conductive sheet 3 is attached to one side of the first magnet 1;
preferably, the first magnet 1 is provided with a through hole 4 for leading out a coil lead, so that the thickness of the wireless charging module is reduced;
the shape of the first magnet 1 may be set according to actual needs, for example, the first magnet 1 may have a ring structure, such as a square ring, a rectangular ring, or a circular ring;
in an alternative embodiment, the first magnet 1 comprises two or more second magnets 2, and the two or more second magnets 2 are spliced into different rings around the wireless charging coil, such as a square ring, a rectangular ring, or a circular ring;
the magnetizing directions of the second magnets 2 are the same;
the second magnet 2 can be made of magnetic materials with different shapes and sizes according to needs, and the magnetic materials comprise neodymium iron boron permanent magnets, samarium cobalt or permanent magnetic ferrite materials and the like;
preferably, the adjacent second magnets 2 are closely attached;
in another alternative embodiment, adjacent second magnets 2 have a gap therebetween, wherein the size of the gap is adjusted according to the actual situation.
The second embodiment of the utility model is as follows:
on the basis of the first embodiment, the magnetic conductive plate 3 is further defined:
the magnetic conductive sheet 3 is made of silicon steel sheets, low-carbon steel, stainless steel, ferrite or metal powder core materials;
the shape of the magnetic conductive sheet 3 is matched with that of the first magnet 1;
the arrangement can ensure that the magnetic leakage of the first magnet is reduced, and can avoid overlarge influence on the volume of the wireless charging module;
in another alternative embodiment, the shape of the magnetic conductive plate 3 may be set according to actual needs, for example, the shape is a ring shape as shown in fig. 4 and 5, or the shape may be a square or diamond shape;
the area of the magnetic conductive sheet 3 can be set to be larger, for example, larger than that of the first magnet 1, the magnetic field intensity of the magnetic positioning structure is larger, the coupling coefficient of the wireless charging coil 5 is higher, so that the inductance of the module is improved, the area of the magnetic conductive sheet 3 can also be set to be smaller, for example, smaller than that of the first magnet 1, and the coil coupling coefficient influenced by the area is also larger than that of the coil without the magnetic conductive sheet;
the magnetic conductive sheet 3 comprises a plurality of sub magnetic conductive sheets;
the adjacent sub magnetic conductive sheets are tightly attached or provided with a first gap;
the shapes and the number of the sub-magnetic-conductive sheets are set according to actual requirements, for example, the magnetic-conductive sheets can comprise two semi-ring-shaped sub-magnetic-conductive sheets as shown in fig. 6, or four semi-ring-shaped sub-magnetic-conductive sheets as shown in fig. 7, so that the diversity and the flexibility of magnetic-conductive sheet selection are increased.
The third embodiment of the utility model is as follows:
as shown in fig. 2 and 3, a wireless charging module includes the wireless charging electromagnetic positioning structure in the first embodiment or the second embodiment;
the wireless charging coil 5 and the magnetic isolation sheet 6 are also included;
the wireless charging coil 5 is attached to one side of the magnetic separation sheet 6 through a glue layer 8;
the wireless charging coil 5 is a copper coil, and the specification and size are determined by the design requirements of products;
in an optional embodiment, the wireless charging coil 5 is used for releasing electric energy and converting the electric energy into magnetic energy, and the material of the corresponding attached magnetism isolating sheet 6 comprises soft magnetic ferrite, amorphous, nanocrystalline, permalloy or silicon steel soft magnetic material with a certain thickness;
in another optional embodiment, the wireless charging coil 5 is used for receiving magnetic energy and converting the magnetic energy into electric energy, and the material of the corresponding attached magnetism isolating sheet 6 comprises at least one layer of nanocrystalline strip, amorphous strip, soft magnetic ferrite, permalloy or other metal soft magnetic materials;
the first magnet 1 and the magnetic separation sheet 6 have a second gap;
the magnetic conductive sheet 3 and the magnetic separation sheet 6 are provided with a third gap 7;
specifically, the inner diameter of the magnetic conductive sheet 3 is larger than the outer diameter of the magnetic separation sheet 6;
the sizes of the second gap and the third gap 7 can be set according to the product design requirement of the wireless charging module.
The fourth embodiment of the utility model is as follows:
as shown in fig. 8, a wireless charger includes a transmitting terminal 9 and a receiving terminal 10;
the transmitting end 9 and the receiving end 10 comprise the wireless charging module of the third embodiment;
the magnetic conductive sheet 3 of the transmitting end 9 is attached to one side, far away from the receiving end 10, of the first magnet 1 through an adhesive layer;
the magnetic conductive sheet 3 of the transmitting end 9 is mainly used for absorbing magnetic lines of force generated by the first magnet 1 positioned at the transmitting end 9 and reducing magnetic leakage, so that the magnetic attraction of the magnetic positioning structure of the transmitting end 9 and the receiving end 10 is increased;
the magnetic conductive sheet 3 of the receiving end 10 is attached to one side of the first magnet 1 far away from the transmitting end 9 through an adhesive layer;
the magnetic conductive sheet 3 of the receiving end 10 is mainly used for absorbing magnetic lines of force generated by the first magnet 1 positioned at the receiving end 10 and reducing magnetic leakage, so that the magnetic attraction of the magnetic positioning structure of the transmitting end 9 and the receiving end 10 is increased;
in an alternative embodiment, in order to make the wireless charging module lighter and thinner, the magnetic conductive sheet 3 may be omitted from one of the transmitting end 9 and the receiving end 10, for example, the magnetic conductive sheet 3 is only disposed at the transmitting end 9, as shown in fig. 9;
the magnetizing direction of the first magnet 1 of the transmitting terminal 9 is parallel to the magnetizing direction of the first magnet 1 of the receiving terminal 10;
specifically, the magnetizing directions of the first magnets 1 of the transmitting end 9 and the receiving end 10 are both axial magnetizing and the magnetizing directions are the same, wherein the first magnets 1 of the transmitting end 9 and the receiving end 10 are both arranged in parallel to the plane where the wireless charging coil 5 is located, and the magnetizing directions of the first magnets 1 of the transmitting end 9 and the receiving end 10 are both perpendicular to the plane where the wireless charging coil 5 is located.
In order to verify the effect of the wireless charging magnetic positioning structure, the magnetic attraction, the coil coupling coefficient and the charging efficiency of the wireless charger in the fourth embodiment and the traditional wireless charger are respectively tested and compared;
the difference between the conventional wireless charger shown in fig. 10 and the wireless charger of the fourth embodiment shown in fig. 9 lies in that the magnetic conductive sheet 3 of the transmitting terminal 9 is absent, and other structures are the same;
taking the wireless charger described in example four as sample 1, and a conventional wireless charger as sample 2;
the magnetic field line distribution of sample 1 is shown in fig. 11, and the magnetic field line distribution of sample 2 is shown in fig. 12;
as can be seen from fig. 11 and 12, the magnetic field line density of the magnetic alignment structure in sample 1 is greater than that of sample 2,
the magnetic conductive sheet is introduced into the transmitting end, so that magnetic lines of force emitted outwards by the first magnet positioned at the transmitting end can be effectively absorbed, magnetic energy is gathered, and magnetic leakage is reduced, so that the magnetic field intensity of the magnetic positioning structures at the transmitting end and the receiving end is improved;
adjusting the distance between the transmitting end and the receiving end to increase from 0.2mm to 2mm, the magnetic attraction comparison graph of the sample 1 and the sample 2 is shown in fig. 13;
as can be seen from fig. 13, in the process of reducing the distance between the transmitting end and the receiving end, the magnetic attraction of the sample 1 is always larger than that of the sample 2, which indicates that the magnetic positioning structure of the present invention can effectively improve the magnetic attraction between the receiving end and the transmitting end, and can more accurately realize the position alignment of the coupling coil of the charging module, thereby improving the charging efficiency and reducing the energy loss;
wherein magnetic attraction, coil coupling coefficient and inductance value of sample 1 and sample 2 are measured when transmitting terminal and receiving terminal interval are 1.6mm, and the result is shown as table 1:
table 1: magnetic attraction force, coil coupling coefficient and inductance value of sample 1 and sample 2
| Sample numbering | Coupling coefficient (%) | Magnetic attraction F (N) | Ls(uH) |
| |
98.04 | 10.16 | 9.17 |
| |
96.23 | 6.58 | 9.08 |
As can be seen from table 1, when the distance between the transmitting end and the receiving end is 1.6mm, the magnetic attraction of the sample 1 is larger than that of the sample 2, and the coupling coefficient of the charging coil of the sample 1 is much larger than that of the sample 2; the magnetic positioning structure and the magnetizing mode of the sample 1 are explained, so that the magnetic attraction of the positioning magnets of the transmitting end and the receiving end can be effectively improved, and the influence of the magnetic force generated by the positioning magnets on other components of the transmitting end and the receiving end can be reduced, so that the coupling coefficient of a wireless charging coil and the inductance value of a wireless charging module are effectively improved;
the charging efficiency of sample 1 and sample 2 was measured and the results are shown in table 2:
table 2: charging efficiency of sample 1 and sample 2
As can be seen from table 2, the charging efficiency of sample 1 is higher than that of sample 2, which intuitively shows that the magnetic positioning structure of the present invention can effectively improve the charging efficiency of the wireless charging module, increase the charging speed, and reduce the power loss.
In summary, the wireless charging electromagnetic positioning structure, the wireless charging module and the wireless charger provided by the utility model are designed to be attached to the positioning magnet by introducing the magnetic conductive sheet into the magnetic positioning structure, wherein the magnetic conductive sheet can comprise a plurality of sub magnetic conductive sheets, and can be adaptively spliced into different shapes according to actual conditions, so that the wireless charging electromagnetic positioning structure, the wireless charging module and the wireless charger have selective diversification and flexibility, and are adapted to different structural designs of the wireless charging module; laminate in positioning magnet's magnetic conduction piece can shorten positioning magnet's magnetic line of force length, the focus magnetic line of force, reduce the magnetic leakage, increase magnetism location structure's magnetic field intensity, and can reduce the influence of the magnetic line of force that positioning magnet produced to other components and parts of transmitting terminal and receiving terminal, thereby can further improve the location precision of transmitting terminal and the wireless charging coil of receiving terminal, effectively improve the inductance value of wireless charging coil coupling coefficient and wireless module that charges, therefore when designing, under the same inductance specification condition, the thickness of magnetism isolating piece can reduce, thereby provide bigger space for the coil design, can reduce like the coil number of turns, the coil line footpath can suitably increase, thereby reduce the electric energy loss, promote charging efficiency.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (14)
1. A wireless charging electromagnetic positioning structure is characterized by comprising a first magnet and a magnetic conductive sheet;
the magnetic conductive sheet is attached to one side of the first magnet;
the first magnet comprises more than two second magnets;
the more than two second magnets are arranged around the wireless charging coil.
2. The wireless charging electromagnetic positioning structure of claim 1, wherein the charging direction of the first magnet is perpendicular to the plane of the wireless charging coil.
3. The wireless charging electromagnetic positioning structure of claim 1, wherein the charging directions of the second magnets are the same.
4. The wireless charging electromagnetic positioning structure of claim 1, wherein the two or more second magnets are spliced into a ring shape.
5. The wireless charging electromagnetic positioning structure of claim 1, wherein adjacent second magnets are tightly attached to each other.
6. The wireless charging electromagnetic positioning structure of claim 1, wherein the first magnet has a through hole.
7. The wireless charging and electromagnetic positioning structure according to any one of claims 1 to 6, wherein the shape of the magnetic conductive sheet is adapted to the shape of the first magnet.
8. The wireless charging and electromagnetic positioning structure according to any one of claims 1 to 6, wherein the magnetic conductive sheet comprises a plurality of sub magnetic conductive sheets;
and the adjacent sub magnetic conductive sheets are tightly attached or provided with first gaps.
9. A wireless charging module, comprising a wireless charging coil and the wireless charging electromagnetic positioning structure of any one of claims 1 to 8.
10. The wireless charging module of claim 9, further comprising a magnetic shield;
the wireless charging coil is attached to one side of the magnetic separation sheet.
11. The wireless charging module of claim 10, wherein the first magnet and the magnetic shielding sheet have a second gap;
the magnetic conductive sheet and the magnetic separation sheet are provided with a third gap.
12. A wireless charger is characterized by comprising a transmitting end and a receiving end;
the transmitting end and the receiving end both comprise the wireless charging module of claim 10;
the magnetic conductive sheet of the transmitting end is attached to one side, far away from the receiving end, of the first magnet;
the magnetic conductive sheet of the receiving end is attached to one side, far away from the transmitting end, of the first magnet.
13. The wireless charger of claim 12 wherein one of the transmitting end and the receiving end omits the magnetically permeable plate.
14. The wireless charger of claim 12, wherein the magnetizing direction of the first magnet of the transmitting end and the magnetizing direction of the first magnet of the receiving end are parallel.
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| CN202120135830.0U CN215580559U (en) | 2021-01-18 | 2021-01-18 | Wireless charging electromagnetic positioning structure, wireless charging module and wireless charger |
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| CN202120135830.0U CN215580559U (en) | 2021-01-18 | 2021-01-18 | Wireless charging electromagnetic positioning structure, wireless charging module and wireless charger |
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