A wireless charging magnetic positioning structure, a wireless charging module and a wireless charger

Abstract

The application provides a wireless charging magnetic positioning structure, a wireless charging module and a wireless charger. The wireless charging magnetic positioning structure comprises a first magnet and a second magnet. The first magnet is arranged around a wireless charging coil. The second magnet is arranged around the first magnet. The magnetization direction of the first magnet is opposite to the magnetization direction of the second magnet. In this way, the first magnet and the second magnet in the transmitting end and the receiving end can form a closed loop magnetic force line in cooperation, the length of the magnetic force line of the magnetic positioning structure can be shortened, the magnetic force line is more dense, the magnetic leakage is reduced, the magnetic attraction of the magnetic positioning structure is improved, the influence of the magnetic force line of the magnetic positioning structure on other components in the receiving end and the transmitting end is reduced, and thus the precise positioning between the wireless charging coils can be realized and the charging efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application 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

[0002] Wireless charging technology is a non-contact charging technology that uses coil coupling technology to transmit energy from the transmitting end to the receiving end through inductive coupling. Due to its convenience, intelligence and diversification, the popularity of wireless charging products is increasing, and it is becoming an integral part of people's lives.

[0003] With the rapid development of consumer electronics, higher requirements are placed on wireless charging technology. This includes the problem of wireless charging efficiency. 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 and the lower the energy loss, and the better the performance of the charging module. There are many factors that affect the efficiency of wireless charging, including wireless charging coil design, performance improvement of magnetic separation sheet materials for wireless charging, and overall structure optimization of the module. In addition, the key point affecting the efficiency of wireless charging is the alignment of the coil position when the transmitting end and the receiving end are coupled for charging.

[0004] Magnetic positioning technology is currently the most convenient and effective positioning technology and has begun to be applied in wireless charging technology. However, the current magnetic positioning technology used in wireless charging is relatively simple and can only achieve preliminary matching of the coil position. Although it improves the charging efficiency compared to wireless charging without a magnetic positioning structure, the charging efficiency of wireless charging technology still needs to be further improved for large-scale application. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a wireless charging magnetic positioning structure, a wireless charging module and a wireless charger that can achieve precise positioning between wireless charging coils and improve charging efficiency.

[0006] To solve the above technical problems, one technical solution adopted by the present application is:

[0007] A wireless charging magnetic positioning structure, comprising a first magnet and a second magnet;

[0008] The first magnet is arranged around the wireless charging coil;

[0009] The second magnet is arranged around the first magnet;

[0010] The magnetization direction of the first magnet is opposite to the magnetization direction of the second magnet.

[0011] To solve the above technical problems, another technical solution adopted by the present application is:

[0012] The wireless charging module comprises a wireless charging coil and the wireless charging magnetic positioning structure.

[0013] To solve the above technical problems, the application adopts another technical solution:

[0014] The wireless charger comprises a transmitting end and a receiving end;

[0015] Both the transmitting end and the receiving end comprise the wireless charging module;

[0016] The magnetization direction of the first magnet of the transmitting end is parallel to the magnetization direction of the first magnet of the receiving end.

[0017] The wireless charging magnetic positioning structure, the wireless charging module and the wireless charger provided by the application adopt the magnetic positioning structure that the first magnet is arranged around the wireless charging coil and the second magnet is arranged around the first magnet, wherein the magnetization 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 form a closed loop magnetic force line in cooperation, and the magnetization direction of the first magnet of the transmitting end is parallel to the magnetization direction of the first magnet of the receiving end, so that the first magnet of the transmitting end and the first magnet of the receiving end and the second magnet of the transmitting end and the second magnet of the receiving end can form a closed loop magnetic force line in cooperation, which can shorten the magnetic force line length of the magnetic positioning structure, make the magnetic force line more dense, reduce the magnetic leakage, greatly improve the magnetic attraction force of the magnetic positioning structure, and more accurately realize the position alignment of the wireless charging coupling coil. 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 relatively tight, so that the magnetic force line of the magnetic positioning structure does not have a great influence on the internal magnetic field of the wireless charging coil, thereby improving the wireless charging efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The wireless charging magnetic positioning structure of the embodiment of the application is shown in the figure;

[0019] Figure 2 The wireless charging module structure of the embodiment of the application is shown in the figure;

[0020] Figure 3 The wireless charging magnetic positioning structure included in sample 1 in the embodiment of the application is shown in the figure;

[0021] Figure 4 The wireless charging magnetic positioning structure included in sample 2 in the embodiment of the application is shown in the figure;

[0022] Figure 5 The wireless charging magnetic positioning structure included in sample 3 in the embodiment of the application is shown in the figure;

[0023] Figure 6 Fig. 1 is a magnetic force line distribution diagram corresponding to sample 1 in an embodiment of the present application;

[0024] Figure 7 Fig. 2 is a magnetic force line distribution diagram corresponding to sample 2 in an embodiment of the present application;

[0025] Figure 8 Fig. 3 is a magnetic force line distribution diagram corresponding to sample 3 in an embodiment of the present application;

[0026] Figure 9 Fig. 4 is a magnetic attraction force comparison diagram of the magnetic positioning structure included in sample 1, sample 2 and sample 3 in an embodiment of the present application.

[0027] Label explanation:

[0028] 1, first magnet; 2, second magnet; 3, third magnet; 4, fourth magnet; 5, first gap; 6, first through hole; 7, second through hole; 8, wireless charging coil; 9, magnetic isolation sheet; 10, second gap. DETAILED DESCRIPTION

[0029] To explain the technical content, purposes and effects of the present application in detail, the following will be described in conjunction with the embodiments and the accompanying drawings.

[0030] Please refer to Figure 1 A wireless charging magnetic positioning structure includes a first magnet and a second magnet.

[0031] The first magnet is arranged around the wireless charging coil.

[0032] The second magnet is arranged around the first magnet.

[0033] The magnetization direction of the first magnet is opposite to that of the second magnet.

[0034] As can be seen from the above description, the wireless charging magnetic positioning structure provided by the present application adopts a magnetic positioning structure in which the first magnet is arranged around the wireless charging coil and the second magnet is arranged around the first magnet, and the magnetization directions of the first magnet and the second magnet are opposite, so that the first magnet and the second magnet inside the transmitting end and inside the receiving end cooperate with each other to form a closed loop magnetic force line, which can shorten the magnetic force line length of the magnetic positioning structure, make the magnetic force line more dense, reduce magnetic leakage, and thus greatly improve the magnetic attraction force of the magnetic positioning structure, so that the position alignment of the wireless charging coupling coil can be more accurately realized. At the same time, the first magnet and the second magnet are both located outside the wireless charging coil, and the magnetic force line formed between them is relatively tight, so the magnetic force line of the magnetic positioning structure will not have a great impact on the internal magnetic field of the wireless charging coil, thereby improving the wireless charging efficiency.

[0035] Further, the first magnet and the second magnet have a first gap therebetween.

[0036] As can be seen from the above description, since the first magnet and the second magnet both adopt magnetic materials, by setting the first magnet and the second magnet to have a gap therebetween, contact of the magnetic materials can be avoided, the first magnet and the second magnet can form closed-loop magnetic lines therebetween, the length of the magnetic lines of the magnetic positioning structure can be shortened, the magnetic lines can be more dense, the magnetic leakage can be reduced, and thus the magnetic attraction force of the magnetic positioning structure can be greatly improved.

[0037] Further, the first magnet and the second magnet are coplanar and parallel to the plane where the wireless charging coil is located.

[0038] As can be seen from the above description, by setting the first magnet and the second magnet to be parallel and coplanar, the closed-loop magnetic lines formed by the first magnet and the second magnet can be enhanced, and the closed-loop magnetic lines can be more uniformly and stably distributed around the wireless charging coil.

[0039] Further, the centers of the first magnet and the second magnet coincide.

[0040] As can be seen from the above description, by setting the centers of the first magnet and the second magnet to coincide, the closed-loop magnetic lines formed by the first magnet and the second magnet can be uniformly and stably distributed, and the magnetic positioning structure of the wireless charging module can be uniformly stressed as a whole.

[0041] Further, the first magnet comprises two or more third magnets.

[0042] The two or more third magnets are arranged around the wireless charging coil.

[0043] As can be seen from the above description, by setting the first magnet to comprise two or more third magnets and arranged around the wireless charging coil, the diversity and flexibility of the first magnet can be enhanced, the structure of the first magnet can be conveniently adjusted according to the product design requirements of the wireless charging module, and the position matching of the coupling coil can be more accurately realized.

[0044] Further, the third magnets have the same magnetization direction.

[0045] As can be seen from the above description, by setting the third magnets to have the same magnetization direction, more closed-loop magnetic lines with the same direction can be formed in cooperation with the second magnet, the density of the magnetic lines can be increased, and thus the magnetic attraction force of the magnetic positioning structure can be improved.

[0046] Further, the third magnets are closely attached to each other.

[0047] As can be seen from the above description, in the case that the inner and outer diameters of the first magnet are constant, the adjacent third magnets are closely attached to each other, the effective area of the first magnet is increased, the magnetic attraction of the magnetic positioning structure is enhanced, and the magnetic force lines are uniform.

[0048] Further, the second magnet comprises two or more fourth magnets.

[0049] The two or more fourth magnets are arranged around the first magnet.

[0050] As can be seen from the above description, by arranging the second magnet to comprise two or more fourth magnets and arranging the two or more fourth magnets around the first magnet, the diversity and flexibility of the second magnet selection are enhanced, the structure of the second magnet can be conveniently adjusted according to the product design requirements of the wireless charging module, and the position matching of the coupling coil is more accurately realized.

[0051] Further, the fourth magnets have the same magnetization direction.

[0052] As can be seen from the above description, by arranging the fourth magnets to have the same magnetization direction, more closed-loop magnetic force lines with the same direction can be formed in cooperation with the first magnet, the density of the magnetic force lines is increased, and the magnetic attraction of the magnetic positioning structure is improved.

[0053] Further, the adjacent fourth magnets are closely attached to each other.

[0054] As can be seen from the above description, in the case that the inner and outer diameters of the second magnet are constant, the adjacent fourth magnets are closely attached to each other, the effective area of the second magnet is increased, the magnetic attraction of the magnetic positioning structure is enhanced, and the magnetic force lines are uniform.

[0055] Further, the first magnet has a first through hole.

[0056] The second magnet has a second through hole.

[0057] As can be seen from the above description, by arranging the first through hole in the first magnet and the second through hole in the second magnet, the lead of the wireless charging coil can be led out, and thus the overall thickness of the wireless charging module is reduced.

[0058] Please refer to Figure 2 A wireless charging module, comprising a wireless charging coil and the above-mentioned wireless charging magnetic positioning structure.

[0059] Further, it further comprises a magnetic isolation sheet.

[0060] The wireless charging coil is attached to one side of the magnetic isolation sheet.

[0061] As can be known from the above description, by arranging the magnetic isolation sheet, the magnetic flux of the inductive magnetic field between the coupling coils can be gathered, thereby enhancing the magnetic induction intensity of the receiving end coil, reducing the electromagnetic signal attenuation and improving the electromagnetic conversion efficiency in the wireless charging, and reducing the electromagnetic interference of the magnetic force lines generated by the magnetic positioning structure on other metals and components inside the transmitting end and the receiving end.

[0062] Further, the first magnet and the magnetic isolation sheet have a second gap therebetween.

[0063] As can be known from the above description, since the first magnet and the magnetic isolation sheet are both made of magnetic material, by arranging a gap between the first magnet and the magnetic isolation sheet, the magnetic material can be avoided from being in contact, thereby reducing the interference of the closed loop magnetic force lines formed between the first magnet and the second magnet on the magnetic flux of the wireless charging coil.

[0064] A wireless charger, comprising a transmitting end and a receiving end;

[0065] The transmitting end and the receiving end both comprise the wireless charging module.

[0066] The magnetization direction of the first magnet of the transmitting end is parallel to the magnetization direction of the first magnet of the receiving end.

[0067] As can be known from the above description, by arranging the magnetization direction of the first magnet of the transmitting end to be parallel to the magnetization direction of the first magnet of the receiving end, the closed loop magnetic force lines can be formed between the first magnet of the transmitting end and the first magnet of the receiving end and between the second magnet of the transmitting end and the second magnet of the receiving end, thereby positioning the wireless charging terminal.

[0068] Further, the magnetization direction of the first magnet is axial magnetization.

[0069] The magnetization direction of the first magnet of the transmitting end is the same as the magnetization direction of the first magnet of the receiving end.

[0070] Further, the magnetization direction of the first magnet is radial magnetization.

[0071] The magnetization direction of the first magnet of the transmitting end is opposite to the magnetization direction of the first magnet of the receiving end.

[0072] The wireless charging magnetic positioning structure, the wireless charging module and the wireless charger provided by the application are suitable for any application scenarios requiring wireless charging, such as mobile phone wireless charging, wearable smart terminal wireless charging such as earphone and watch, smart home wireless charging, electric vehicle wireless charging and the like, which will be described below through specific embodiments.

[0073] Embodiment one of the application is:

[0074] AsFigure 1 As shown in the drawings, a wireless charging magnetic positioning structure comprises a first magnet 1 and a second magnet 2;

[0075] The first magnet 1 is arranged around a wireless charging coil;

[0076] The second magnet 2 is arranged around the first magnet 1;

[0077] The magnetization direction of the first magnet 1 is opposite to the magnetization direction of the second magnet 2;

[0078] Specifically, the magnetization direction can be axial magnetization or radial magnetization, 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, and vice versa; if the magnetization direction of the first magnet 1 is radial magnetization from the center of the circle to the outside of the circle, the magnetization direction of the second magnet 2 is radial magnetization from the outside of the circle to the center of the circle, and vice versa;

[0079] The shapes of the first magnet 1 and the second magnet 2 can be set according to actual needs, such as ring shape, square shape, other symmetrical or asymmetrical shapes;

[0080] Preferably, the first magnet 1 has a first through hole 6, and the second magnet 2 has a second through hole 7, for leading out the coil lead, thereby reducing the thickness of the wireless charging module;

[0081] The first magnet 1 and the second magnet 2 have a first gap 5 therebetween;

[0082] In an optional embodiment, the first magnet 1 and the second magnet 2 are coplanar and parallel to the plane where the wireless charging coil is located, and the inner diameter of the second magnet 2 is greater than the outer diameter of the first magnet 1, so that the closed loop magnetic lines formed by the first magnet 1 and the second magnet 2 can be enhanced;

[0083] Preferably, the centers of the first magnet 1 and the second magnet 2 coincide with the center of the wireless charging coil, so that the closed loop magnetic lines formed by the first magnet 1 and the second magnet 2 can be uniformly and stably distributed around the wireless charging coil, the magnetic positioning structure of the wireless charging module can be uniformly stressed as a whole, and the position matching of the wireless charging coupling coil can be more stably achieved.

[0084] Embodiment two of the present application is:

[0085] On the basis of embodiment one, the first magnet 1 and the second magnet 2 are further limited respectively:

[0086] The first magnet 1 comprises two or more third magnets 3;

[0087] The two or more third magnets 3 are arranged in different shapes around the wireless charging coil, such as a ring shape, a square shape, other symmetrical or asymmetrical shapes, and the like.

[0088] The third magnets 3 have the same magnetization direction.

[0089] The third magnets 3 can be made of different shapes and sizes of magnetic materials, such as neodymium iron boron permanent magnets, samarium cobalt, or permanent ferrite materials, and the like.

[0090] Preferably, the adjacent third magnets 3 are closely connected.

[0091] In another optional embodiment, the adjacent third magnets 3 have a gap therebetween, and the size of the gap is adjusted according to actual conditions, because the first magnet 1 and the second magnet 2 can form a closed magnetic circuit, so as to not cause a large impact on the magnetic attraction of the magnetic positioning structure.

[0092] The second magnet 2 includes two or more fourth magnets 4.

[0093] The two or more fourth magnets 4 are arranged in different ring shapes around the wireless charging coil, such as a square ring shape, a rectangular ring shape, or a circular ring shape, and the like.

[0094] The fourth magnets 4 have the same magnetization direction.

[0095] The fourth magnets 4 can be made of different shapes and sizes of magnetic materials, such as neodymium iron boron permanent magnets, samarium cobalt, or permanent ferrite materials, and the like.

[0096] Preferably, the adjacent fourth magnets 4 are closely connected.

[0097] In another optional embodiment, the adjacent fourth magnets 4 have a gap therebetween, and the size of the gap is adjusted according to actual conditions, because the first magnet 1 and the second magnet 2 can form a closed magnetic circuit, so as to not cause a large impact on the magnetic attraction of the magnetic positioning structure.

[0098] Embodiment three of the present application is:

[0099] As shown in Figure 2 A wireless charging module includes the wireless charging magnetic positioning structure of the embodiment one or the embodiment two.

[0100] Further including a wireless charging coil 8 and a magnetic isolation sheet 9.

[0101] The wireless charging coil 8 is attached to one side of the magnetic isolation sheet 9.

[0102] The wireless charging coil 8 is a copper material coil, and the specification size is determined by product design requirements.

[0103] In an alternative embodiment, the wireless charging coil 8 is used to release electric energy and convert it into magnetic energy, and the material of the corresponding attached magnetic isolation sheet 9 includes a certain thickness of soft magnetic ferrite, amorphous, nanocrystalline, permalloy or silicon steel soft magnetic material.

[0104] In another alternative embodiment, the wireless charging coil 8 is used to receive magnetic energy and convert it into electric energy, and the material of the corresponding attached magnetic isolation sheet 9 includes at least one layer of nanocrystalline strip, amorphous strip, soft magnetic ferrite, permalloy or other metal soft magnetic material.

[0105] The first magnet 1 and the magnetic isolation sheet 9 have a second gap 10 therebetween.

[0106] Specifically, the inner diameter of the first magnet 1 is greater than the outer diameter of the magnetic isolation sheet 9.

[0107] The size of the second gap 10 can be set according to the product design requirements of the wireless charging module.

[0108] Embodiment four of the present application is:

[0109] A wireless charger includes a transmitting end and a receiving end.

[0110] The transmitting end and the receiving end each include the wireless charging module of the above-mentioned embodiment three.

[0111] As shown in Figure 3 and Figure 4 The first magnet 1 is formed into a circular ring shape by arc-shaped third magnets 3 being attached and spliced, and the second magnet 2 is formed into a circular ring shape by arc-shaped fourth magnets 4 being attached and spliced, and the number of third magnets 3 and fourth magnets 4 is equal.

[0112] The magnetization direction of the first magnet 1 of the transmitting end is parallel to the magnetization direction of the first magnet 1 of the receiving end.

[0113] In an alternative embodiment, as shown in Figure 3 The magnetization direction of the first magnet 1 is axial magnetization, and the magnetization direction is perpendicular to the plane where the wireless charging coil is located. The magnetization direction of the first magnet 1 of the transmitting end is the same as the magnetization direction of the first magnet 1 of the receiving end, and the magnetic pole directions of the two near the end face are opposite. At the same time, the magnetization direction of the second magnet 2 of the transmitting end is the same as the magnetization direction of the second magnet 2 of the receiving end, and the magnetic pole directions of the two near the end face are opposite.

[0114] In another alternative embodiment, as shown in Figure 4As shown, the first magnet 1 is magnetized radially, and 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 that of the first magnet 1 at the receiving end. At the same time, the magnetization direction of the second magnet 2 at the transmitting end is opposite to that of the second magnet 2 at the receiving end.

[0115] To verify the beneficial performance of the present invention, the wireless charger described in Example 4 and a traditional wireless charger were used as samples to test the magnetic attraction force and simulate the magnetic field distribution map using simulation technology, and then compared.

[0116] Sample 1 includes the embodiment described in Example 4. Figure 3 The magnetic positioning structure shown in sample 2 includes the features described in embodiment four. Figure 4 The magnetic positioning structure shown in sample 3 includes traditional magnetic positioning structures such as... Figure 5 The magnetic positioning structure shown has only a single-turn magnet;

[0117] The magnetic field lines distribution diagrams of samples 1, 2, and 3 are shown below. Figure 6 , Figure 7 and Figure 8 As shown;

[0118] Depend on Figure 6 , Figure 7 and Figure 8 It can be seen that the magnetic field line density of the magnetic positioning structure in samples 1 and 2 is relatively large and the magnetic circuit is relatively short. The magnetic field lines generated by the first magnet and the magnetic field lines generated by the second magnet in the transmitting end and the receiving end form a tight closed loop, thereby increasing the magnetic attraction of the magnetic positioning structure. At the same time, the leakage of magnetic field in the tight closed loop is small, which greatly reduces the impact on other components in the transmitting end and the receiving end. However, the magnetic positioning structure in sample 3 does not have this magnetic field line strengthening phenomenon.

[0119] As the distance between the transmitter and receiver was increased from 0.2 mm to 2 mm, the magnetic attraction of the magnetic positioning structure in samples 1, 2, and 3 gradually decreased. A comparison of the magnetic attraction of the magnetic positioning structures in samples 1, 2, and 3 is shown in the figure below. Figure 9 As shown;

[0120] Depend on Figure 9 It can be seen that the magnetic attraction of samples 1 and 2 is always greater than that of sample 3, indicating that the magnetic positioning structure described in this invention can effectively improve the magnetic attraction of the wireless charger receiver and transmitter, enabling the charging module coupling coil to achieve more precise positioning and thus improve charging efficiency.

[0121] In summary, the wireless charging magnetic positioning structure, the wireless charging module and the wireless charger provided by the application adopt the magnetic positioning structure that the first magnet is arranged around the wireless charging coil and the second magnet is arranged around the first magnet, the magnetization directions of the first magnet and the second magnet are opposite, the first magnet and the second magnet in the transmitting end and the receiving end can form a closed loop magnetic force line, the magnetization direction of the first magnet in the transmitting end is parallel to the magnetization direction of the first magnet in the receiving end, the first magnet in the transmitting end and the first magnet in the receiving end and the second magnet in the transmitting end and the second magnet in the receiving end can form a closed loop magnetic force line, the magnetic force line length of the magnetic positioning structure can be shortened, the magnetic force line is more dense, the magnetic leakage is reduced, the first magnet can be arranged to include a plurality of third magnets with the same magnetization direction, the second magnet can be arranged to include a plurality of fourth magnets with the same magnetization direction, the diversity and flexibility of the first magnet and the second magnet are enhanced, the structure of the first magnet and the second magnet can be adjusted according to the product design requirements of the wireless charging module, the magnetic attraction of the magnetic positioning structure is improved, the first magnet and the second magnet are arranged to be coplanar with the wireless charging coil and the centers coincide, the magnetic force line of the magnetic positioning structure is uniformly and stably distributed around the wireless charging coil, the magnetic force line of the magnetic positioning structure does not have a great influence on the internal magnetic field of the wireless charging coil because the first magnet and the second magnet are both located outside the wireless charging coil and the closed loop magnetic force line formed between the first magnet and the second magnet is relatively dense, so that the position alignment of the wireless charging coupling coil can be more accurately realized, and the wireless charging efficiency is improved.

[0122] The above description is only an embodiment of the application, and does not limit the patent scope of the application, any equivalent transformation or direct or indirect application in the related technical field based on the content of the specification and the drawings is also included in the patent protection scope of the application.

Claims

1. A wireless charging module, characterized in that, Includes wireless charging coil and wireless charging magnetic positioning structure; The wireless charging magnetic 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 magnetization direction of the first magnet is opposite to that of the second magnet; and a first gap exists between the first magnet and the second magnet. It also includes a magnetic shielding sheet; the wireless charging coil is attached to one side of the magnetic shielding sheet.

2. The wireless charging module according to claim 1, characterized in that, The first magnet and the second magnet are coplanar and parallel to the plane containing the wireless charging coil.

3. The wireless charging module according to claim 1, characterized in that, The centers of the first magnet and the second magnet coincide.

4. The wireless charging module according to claim 1, characterized in that, The first magnet includes two or more third magnets; The two or more third magnets are arranged around the wireless charging coil.

5. The wireless charging module according to claim 4, characterized in that, The third magnet is magnetized in the same direction.

6. The wireless charging module according to claim 4, characterized in that, The adjacent third magnets are tightly fitted together.

7. The wireless charging module according to claim 1, characterized in that, The second magnet includes two or more fourth magnets; The two or more fourth magnets are arranged around the first magnet.

8. The wireless charging module according to claim 7, characterized in that, The fourth magnet is magnetized in the same direction.

9. The wireless charging module according to claim 7, characterized in that, The adjacent fourth magnets are tightly fitted together.

10. The wireless charging module according to any one of claims 1 to 9, characterized in that, The first magnet has a first through hole; The second magnet has a second through hole.

11. The wireless charging module according to claim 1, characterized in that, There is a second gap between the first magnet and the magnetic shielding sheet.

12. A wireless charger, characterized in that, Includes the transmitter and receiver; Both the transmitter and receiver include the wireless charging module described in any one of claims 1 to 11; The magnetization direction of the first magnet at the transmitting end is parallel to the magnetization direction of the first magnet at the receiving end.

13. The wireless charger according to claim 12, characterized in that, The first magnet is magnetized axially. The magnetization direction of the first magnet at the transmitting end is the same as that of the first magnet at the receiving end.

14. The wireless charger according to claim 13, characterized in that, The first magnet is magnetized radially; The magnetization direction of the first magnet at the transmitting end is opposite to that of the first magnet at the receiving end.

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