CN215580561U - 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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- CN215580561U CN215580561U CN202120192103.8U CN202120192103U CN215580561U CN 215580561 U CN215580561 U CN 215580561U CN 202120192103 U CN202120192103 U CN 202120192103U CN 215580561 U CN215580561 U CN 215580561U
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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 second magnet; the first magnet is arranged around the wireless charging coil; the second magnet is arranged around the first magnet; the magnetizing direction of the first magnet is opposite to that of the second magnet; can make inside and the inside first magnet of receiving terminal and the inside closed circuit magnetic line of force of second magnet of mutually supporting formation of transmitting terminal like this, can shorten the magnetic line of force length of magnetism location structure, it is denser to make the magnetic line of force, reduce the magnetic leakage, not only improve the magnetic attraction of magnetism location structure, still reduced the influence of the magnetic line of force of magnetism location structure to receiving terminal and the inside other components and parts of transmitting terminal, thereby can realize the accurate location of wireless coupling coil that charges, improve charging 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, 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 second magnet;
the first magnet is arranged around the wireless charging coil;
the second magnet is arranged around the first magnet;
the magnetizing direction of the first magnet is opposite to that of the second magnet.
Further, a first gap is provided between the first magnet and the second magnet.
Further, the first magnet and the second magnet are coplanar and parallel to the plane of the wireless charging coil.
Further, the centers of the first magnet and the second magnet coincide.
Further, the first magnet includes two or more third magnets;
the more than two third magnets are arranged around the wireless charging coil.
Further, the magnetizing directions of the third magnets are the same.
Further, the adjacent third magnets are tightly attached to each other.
Further, the second magnet includes two or more fourth magnets;
the two or more fourth magnets are disposed around the first magnet.
Further, the magnetizing directions of the fourth magnets are the same.
Further, adjacent fourth magnets are tightly attached to each other.
Further, the first magnet has a first through hole;
the second magnet has a second through hole.
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.
A wireless charger comprises a transmitting end and a receiving end;
the transmitting end and the receiving end both comprise the wireless charging module;
and the magnetizing direction of the first magnet at the transmitting end is parallel to that of the first magnet at the receiving end.
Further, the magnetizing direction of the first magnet is axial magnetizing;
the magnetizing direction of the first magnet at the transmitting end is the same as that of the first magnet at the receiving end.
Further, the magnetizing direction of the first magnet is radial magnetizing;
the magnetizing direction of the first magnet at the transmitting end is opposite to that of the first magnet at the receiving end.
The utility model has the beneficial effects that: the utility model provides a wireless charging electromagnetic positioning structure, a wireless charging module and a wireless charger, which adopt a magnetic positioning structure that a first magnet is arranged around a wireless charging coil and a second magnet is arranged around the first magnet, wherein the magnetizing directions of the first magnet and the second magnet are opposite, so that the first magnet and the second magnet in the transmitting end and the receiving end can be mutually matched to form a tight closed loop magnetic line, and meanwhile, 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, so that a tight closed loop can be formed between the first magnet at the transmitting end and the first magnet at the receiving end as well as between the second magnet at the transmitting end and the second magnet at the receiving end, thereby shortening the length of the magnetic line of the magnetic positioning structure, enabling the magnetic line to be more dense, reducing the magnetic leakage and greatly improving the magnetic attraction force of the magnetic positioning structure, the position alignment that realizes wireless coupling coil that charges that can be more accurate, first magnet all is located wireless charging coil outside with second magnet simultaneously, and the magnetic line of force that forms between the two is inseparabler, so the magnetic line of force of magnetism location structure can not cause great influence to wireless charging coil's internal magnetic field to improve wireless charging efficiency.
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 diagram of a wireless charging electromagnetic positioning structure included in the sample 1 according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a wireless charging magnetic positioning structure included in sample 2 according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a wireless charging magnetic positioning structure included in the sample 3 according to the embodiment of the present invention;
FIG. 6 is a magnetic field line distribution diagram corresponding to sample 1 in an embodiment of the present invention;
FIG. 7 is a magnetic field line distribution diagram corresponding to sample 2 in an embodiment of the present invention;
FIG. 8 is a magnetic field line distribution diagram corresponding to sample 3 in an embodiment of the present invention;
fig. 9 is a comparison of magnetic attraction forces of the magnetic alignment structures included in sample 1, sample 2, and sample 3 in an example of the present invention.
Description of reference numerals:
1. a first magnet; 2. a second magnet; 3. a third magnet; 4. a fourth magnet; 5. a first gap; 6. a first through hole; 7. a second through hole; 8. a wireless charging coil; 9. a magnetic shield sheet; 10. a second gap.
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 second magnet;
the first magnet is arranged around the wireless charging coil;
the second magnet is arranged around the first magnet;
the magnetizing direction of the first magnet is opposite to that of the second magnet.
It can be known from the above description that, the wireless charging coil positioning structure provided by the present invention adopts a magnetic positioning structure in which a first magnet is disposed around a wireless charging coil and a second magnet is disposed around the first magnet, wherein the magnetizing directions of the first magnet and the second magnet are opposite, so that the first magnet and the second magnet inside a transmitting end and inside a receiving end can cooperate with each other to form a close loop magnetic force line, thereby shortening the length of the magnetic force line of the magnetic positioning structure, making the magnetic force line more dense, reducing magnetic leakage, greatly improving the magnetic attraction of the magnetic positioning structure, more accurately realizing the position alignment of the wireless charging coupling coil, and meanwhile, the first magnet and the second magnet are both located outside the wireless charging coil, and the magnetic force line formed between the first magnet and the second magnet is tighter, so that the magnetic force line of the magnetic positioning structure does not cause a large influence on the internal magnetic field of the wireless charging coil, thereby improving wireless charging efficiency.
Further, a first gap is provided between the first magnet and the second magnet.
It can be known from the above description, because first magnet and second magnet have all adopted magnetic material, have the clearance through setting up between first magnet and the second magnet, can avoid the magnetic material contact, can guarantee to form closed loop magnetic line of force between first magnet and the second magnet, can shorten magnetic line of force length of magnetism location structure, make the magnetic line of force denser, reduce the magnetic leakage to improve magnetic positioning structure's magnetic attraction greatly.
Further, the first magnet and the second magnet are coplanar and parallel to the plane of the wireless charging coil.
According to the above description, by arranging the first magnet and the second magnet in parallel and coplanar, the magnetic force lines of the closed loop formed by the first magnet and the second magnet can be enhanced, and the magnetic force lines of the closed loop can be distributed around the wireless charging coil more uniformly and stably and are parallel to the plane where the wireless charging coil is located.
Further, the centers of the first magnet and the second magnet coincide.
According to the description, the centers of the first magnet and the second magnet are overlapped, so that the magnetic force lines of the closed loop formed by the first magnet and the second magnet are uniform and stable, and the whole stress of the magnetic positioning structure of the wireless charging module is uniform.
Further, the first magnet includes two or more third magnets;
the more than two third magnets are arranged around the wireless charging coil.
Known by the above description, include two above third magnets through setting up first magnet, and set up around wireless charging coil, strengthened the variety and the flexibility that first magnet selected, can conveniently adjust the structure of first magnet according to the product design demand of wireless module of charging, realize coupling coil's position matching more accurately.
Further, the magnetizing directions of the third magnets are the same.
It can be known from the above description that the magnetizing directions of the third magnet are the same, and the third magnet can cooperate with the second magnet to form more closed loop magnetic lines in the same direction, so as to increase the density of the magnetic lines of force, thereby improving the magnetic attraction of the magnetic positioning structure.
Further, the adjacent third magnets are tightly attached to each other.
It can be known from the above description, in the certain circumstances of external diameter in first magnet, the effective area of first magnet can be strengthened in the inseparable laminating between the adjacent third magnet to strengthen magnetism location structure's magnetic attraction, it is even also to be favorable to the magnetic line of force of production to closely laminate between the adjacent third magnet simultaneously.
Further, the second magnet includes two or more fourth magnets;
the two or more fourth magnets are disposed around the first magnet.
Known by the above-mentioned description, include two above fourth magnets through setting up the second magnet, and center on first magnet sets up, has strengthened the variety and the flexibility that the second magnet selected, can conveniently adjust the structure of second magnet according to the product design demand of wireless module of charging, realizes coupling coil's position matching more accurately.
Further, the magnetizing directions of the fourth magnets are the same.
It can be known from the above description that the magnetizing directions of the fourth magnet are the same, and the fourth magnet can cooperate with the first magnet to form more closed loop magnetic lines in the same direction, so as to increase the density of the magnetic lines of force, thereby improving the magnetic attraction of the magnetic positioning structure.
Further, adjacent fourth magnets are tightly attached to each other.
It can be known from the above-mentioned description, under the certain circumstances of external diameter in the second magnet, the effective area of second magnet can be strengthened in the inseparable laminating between the adjacent fourth magnet to strengthen magnetism location structure's magnetic attraction, it is even also to be favorable to the magnetic line of force of production in the inseparable laminating between the adjacent fourth magnet simultaneously.
Further, the first magnet has a first through hole;
the second magnet has a second through hole.
As can be seen from the above description, through set up first through-hole at first magnet and set up the second through-hole at second magnet, can be used for the lead wire of wireless charging coil to derive to reduce the whole thickness of wireless module of charging.
Referring to fig. 2, 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 the magnetic induction intensity of reinforcing 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 that magnetism location structure produced to the electromagnetic interference of other metals and components and parts in transmitting terminal and the receiving terminal.
Further, a second gap is formed between the first magnet and the magnetic separation sheet.
According to the above description, since the first magnet and the magnetism isolating sheet are made of the magnetic material, and the gap is formed between the first magnet and the magnetism isolating sheet, the contact of the magnetic material can be avoided, so that the interference of the closed loop magnetic force line formed between the first magnet and the second magnet on the magnetic flux of the wireless charging coil is reduced.
A wireless charger comprises a transmitting end and a receiving end;
the transmitting end and the receiving end both comprise the wireless charging module;
and the magnetizing direction of the first magnet at the transmitting end is parallel to that 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 to be parallel to the magnetizing direction of the first magnet at the receiving end, a tight closed-loop magnetic line can be formed between the first magnet at the transmitting end and the first magnet at the receiving end and between the second magnet at the transmitting end and the second magnet at the receiving end, so as to position the wireless charging terminal.
Further, the magnetizing direction of the first magnet is axial magnetizing;
the magnetizing direction of the first magnet at the transmitting end is the same as that of the first magnet at the receiving end.
Further, the magnetizing direction of the first magnet is radial magnetizing;
the magnetizing direction of the first magnet at the transmitting end is opposite to that of the first magnet at the receiving end.
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 second magnet 2;
the first magnet 1 is arranged around the wireless charging coil;
the second magnet 2 is arranged around the first magnet 1;
the magnetizing direction of the first magnet 1 is opposite to that of the second magnet 2;
specifically, the magnetization direction may be axial magnetization or radial magnetization, and if the magnetization direction of the first magnet 1 is axial magnetization from top to bottom, the magnetization direction of the second magnet 2 is axial magnetization from bottom to top, or vice versa; if the magnetizing direction of the first magnet 1 is radial magnetizing from the center of the circle to the outside of the circle, the magnetizing direction of the second magnet 2 is radial magnetizing from the outside of the circle to the center of the circle, and vice versa;
the shapes of the first magnet 1 and the second magnet 2 can be set according to actual needs, such as a ring shape, a square shape, other symmetrical or asymmetrical opposite shapes;
preferably, the first magnet 1 is provided with a first through hole 6, and the second magnet 2 is provided with a second through hole 7 for leading out a coil lead, so that the thickness of the wireless charging module is reduced;
a first gap 5 is formed between the first magnet 1 and the second magnet 2;
in an alternative embodiment, the first magnet 1 and the second magnet 2 are coplanar and parallel to the plane of the wireless charging coil, and the inner diameter of the second magnet 2 is larger than the outer diameter of the first magnet 1, so that the closed loop magnetic force lines formed by the first magnet 1 and the second magnet 2 can be enhanced;
preferably, first magnet 1 with the center coincidence of second magnet 2 to with the center coincidence of wireless charging coil, can make the closed loop magnetic line of force that first magnet 1 and second magnet 2 formed evenly stable distribution around wireless charging coil, the whole atress of the magnetism location structure of wireless module of charging is even, can be more stable realize wireless charging coupling coil's position matching.
The second embodiment of the utility model is as follows:
in addition to the first embodiment, the first magnet 1 and the second magnet 2 are further defined as follows:
the first magnet 1 includes two or more third magnets 3;
the more than two third magnets 3 are spliced into different shapes around the wireless charging coil, such as a ring shape, a square shape, other symmetrical or asymmetrical opposite shapes;
the magnetizing directions of the third magnets 3 are the same;
the third magnet 3 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, adjacent third magnets 3 are in close fitting connection;
in another alternative embodiment, a gap is formed between adjacent third magnets 3, wherein the size of the gap is adjusted according to actual conditions, and since a tightly closed magnetic circuit can be formed between the first magnet 1 and the second magnet 2, the magnetic attraction of the magnetic positioning structure is not greatly influenced;
the second magnet 2 includes two or more fourth magnets 4;
the more than two fourth magnets 4 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 fourth magnets 4 are the same;
the fourth magnet 4 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, adjacent fourth magnets 4 are in close fitting connection;
in another alternative embodiment, there is a gap between adjacent fourth magnets 4, wherein the size of the gap is adjusted according to actual conditions, and since a tightly closed magnetic circuit can be formed between the first magnet 1 and the second magnet 2, the magnetic attraction of the magnetic positioning structure is not greatly affected.
The third embodiment of the utility model is as follows:
as shown in fig. 2, a wireless charging module includes the wireless charging electromagnetic positioning structure in the first embodiment or the second embodiment;
the wireless charging coil 8 and the magnetic separation sheet 9 are further included;
the wireless charging coil 8 is attached to one side of the magnetic separation sheet 9;
the wireless charging coil 8 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 8 is used for releasing electric energy and converting the electric energy into magnetic energy, and the material of the corresponding attached magnetism isolating sheet 9 includes soft magnetic ferrite, amorphous, nanocrystalline, permalloy or silicon steel soft magnetic material with a certain thickness;
in another optional embodiment, the wireless charging coil 8 is used for receiving magnetic energy and converting the magnetic energy into electric energy, and the material of the corresponding attached magnetism isolating sheet 9 comprises at least one layer of nanocrystalline strip, amorphous strip, soft magnetic ferrite, permalloy or other metal soft magnetic materials;
a second gap 10 is formed between the first magnet 1 and the magnetic separation sheet 9;
specifically, the inner diameter of the first magnet 1 is larger than the outer diameter of the magnetism isolating sheet 9;
wherein the size of the second gap 10 can be set according to the product design requirement of the wireless charging module.
The fourth embodiment of the utility model is 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 of the third embodiment;
as shown in fig. 3 and 4, the first magnet 1 is in a ring shape formed by jointing and splicing arc-shaped third magnets 3, the second magnet 2 is in a ring shape formed by jointing and splicing arc-shaped fourth magnets 4, and the number of the third magnets 3 is equal to that of the fourth magnets 4;
the magnetizing direction of the first magnet 1 at the transmitting end is parallel to the magnetizing direction of the first magnet 1 at the receiving end;
in an optional embodiment, as shown in fig. 3, the first magnet 1 is magnetized in an axial direction, the magnetizing direction is perpendicular to a plane where the wireless charging coil is located, the magnetizing direction of the first magnet 1 at the transmitting end is the same as the magnetizing direction of the first magnet 1 at the receiving end, and the magnetic pole directions of the first magnet 1 and the second magnet 2 at the transmitting end are opposite, while the magnetizing direction of the second magnet 2 at the receiving end is the same as the magnetizing direction of the second magnet 2 at the receiving end, and the magnetic pole directions of the first magnet 1 and the second magnet 2 at the receiving end are opposite;
in another optional embodiment, as shown in fig. 4, the magnetization direction of the first magnet 1 is radial magnetization, the magnetization direction is parallel to the plane where the wireless charging coil is located, the magnetization direction of the first magnet 1 at the transmitting end is opposite to the magnetization direction of the first magnet 1 at the receiving end, and the magnetization direction of the second magnet 2 at the transmitting end is opposite to the magnetization direction of the second magnet 2 at the receiving end.
In order to verify the beneficial performance of the utility model, the wireless charger in the fourth embodiment and the traditional wireless charger are used as samples to respectively test the magnetic attraction force and simulate a magnetic force line distribution diagram through a simulation technology, and comparison is carried out;
wherein sample 1 comprises implementing four of the magnetic positioning structures shown in fig. 3, sample 2 comprises implementing four of the magnetic positioning structures shown in fig. 4, and sample 3 comprises a conventional magnetic positioning structure having only a single turn of magnet as shown in fig. 5;
the magnetic field line profiles of sample 1, sample 2 and sample 3 are shown in fig. 6, fig. 7 and fig. 8, respectively;
as can be seen from fig. 6, 7 and 8, the magnetic lines of force of the magnetic positioning structure in sample 1 and sample 2 have higher density, the magnetic circuit is shorter, the magnetic lines of force generated by the first magnet and the magnetic lines of force generated by the second magnet in the transmitting end and the receiving end form a tight closed loop, so that the magnetic attraction of the magnetic positioning structure is increased, meanwhile, the leakage of the tight closed loop is less, the influence on other components in the transmitting end and the receiving end is greatly reduced, and the magnetic positioning structure in sample 3 has no magnetic line of force enhancement phenomenon;
adjusting the distance between the transmitting end and the receiving end to be increased from 0.8mm to 2mm, gradually reducing the magnetic attraction of the magnetic positioning structures in the sample 1, the sample 2 and the sample 3, and showing the comparison graph of the magnetic attraction of the magnetic positioning structures in the sample 1, the sample 2 and the sample 3 in fig. 9;
it can be seen from fig. 9 that the magnetic attraction of the sample 1 and the sample 2 is always larger than that of the sample 3, which shows that the magnetic positioning structure of the present invention can effectively improve the magnetic attraction of the receiving end and the transmitting end of the wireless charger, and can more accurately realize the position alignment of the coupling coil of the charging module, thereby improving the charging efficiency.
In summary, the present invention provides a wireless charging electromagnetic positioning structure, a wireless charging module and a wireless charger, which employ a magnetic positioning structure in which a first magnet is disposed around a wireless charging coil and a second magnet is disposed around the first magnet, wherein the magnetizing directions of the first magnet and the second magnet are opposite, so that the first magnet and the second magnet inside a transmitting end and a receiving end cooperate with each other to form a tight closed loop magnetic line, 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, so that a tight closed loop magnetic line is formed between the first magnet at the transmitting end and the first magnet at the receiving end, and between the second magnet at the transmitting end and the second magnet at the receiving end, thereby shortening the length of the magnetic line of the magnetic positioning structure, making the magnetic line denser, reducing magnetic leakage, and at the same time, the first magnet may be configured to include a plurality of third magnets having the same magnetizing direction and the second magnet may be configured to include a plurality of magnets having the same magnetizing direction Including a plurality of fourth magnet that magnetize the direction the same, the variety and the flexibility of first magnet and second magnet selection have been strengthened, can conveniently adjust the structure of first magnet and second magnet according to the product design demand of wireless module of charging, improve the magnetic attraction of magnetism location structure, and through setting up first magnet and second magnet and wireless charging coil coplane and center coincidence, can make the magnetic line of force uniform stabilization of magnetism location structure distribute around wireless charging coil, because first magnet and second magnet all are located wireless charging coil outside, and the closed loop magnetic line of force that forms between the two is denser, so the magnetic line of force of magnetism location structure can not cause great influence to wireless charging coil's internal magnetic field, thereby the position alignment of realization wireless coupling coil that can be more accurate, improve wireless 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 (16)
1. A wireless charging electromagnetic positioning structure is characterized by comprising a first magnet and a second magnet;
the first magnet is arranged around the wireless charging coil;
the second magnet is arranged around the first magnet;
the magnetizing direction of the first magnet is opposite to that of the second magnet;
the second magnet comprises more than two fourth magnets;
the two or more fourth magnets are disposed around the first magnet.
2. The wirelessly charged magnetic positioning structure of claim 1, wherein a first gap is provided between the first magnet and the second magnet.
3. The wireless charging electromagnetic positioning structure of claim 1, wherein the first magnet and the second magnet are coplanar and parallel to a plane of a wireless charging coil.
4. The wirelessly charged magnetic positioning structure of claim 1, wherein centers of the first magnet and the second magnet coincide.
5. The wireless charging electromagnetic positioning structure of claim 1, wherein the first magnet comprises more than two third magnets;
the more than two third magnets are arranged around the wireless charging coil.
6. The wireless charging electromagnetic positioning structure of claim 5, wherein the charging directions of the third magnets are the same.
7. The wireless charging electromagnetic positioning structure of claim 5, wherein adjacent third magnets are tightly attached to each other.
8. The wireless charging electromagnetic positioning structure of claim 1, wherein the charging directions of the fourth magnets are the same.
9. The wireless charging electromagnetic positioning structure of claim 1, wherein adjacent fourth magnets are tightly attached to each other.
10. The wireless charging electromagnetic positioning structure according to any one of claims 1 to 9, wherein the first magnet has a first through hole;
the second magnet has a second through hole.
11. A wireless charging module, comprising a wireless charging coil and the wireless charging electromagnetic positioning structure of any one of claims 1 to 10.
12. The wireless charging module of claim 11, further comprising a magnetic shield;
the wireless charging coil is attached to one side of the magnetic separation sheet.
13. The wireless charging module of claim 12, wherein a second gap is formed between the first magnet and the magnetic shielding sheet.
14. 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 any one of claims 11 to 13;
and the magnetizing direction of the first magnet at the transmitting end is parallel to that of the first magnet at the receiving end.
15. The wireless charger of claim 14, wherein the first magnet is magnetized in an axial direction;
the magnetizing direction of the first magnet at the transmitting end is the same as that of the first magnet at the receiving end.
16. The wireless charger of claim 14, wherein the first magnet is magnetized in a radial direction;
the magnetizing direction of the first magnet at the transmitting end is opposite to that of the first magnet at the receiving end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192103.8U CN215580561U (en) | 2021-01-22 | 2021-01-22 | Wireless charging electromagnetic positioning structure, wireless charging module and wireless charger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120192103.8U CN215580561U (en) | 2021-01-22 | 2021-01-22 | Wireless charging electromagnetic positioning structure, wireless charging module and wireless charger |
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| CN215580561U true CN215580561U (en) | 2022-01-18 |
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| CN202120192103.8U Active CN215580561U (en) | 2021-01-22 | 2021-01-22 | Wireless charging electromagnetic positioning structure, wireless charging module and wireless charger |
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