Electronic device

Abstract

The utility model relates to the technical field of electronic equipment, and discloses electronic equipment. The electronic equipment comprises a wireless charging coil and a magnet assembly. The magnet assembly comprises at least one first magnet and at least one second magnet which are arranged on the first plane. The orthographic projection of the wireless charging coil on the first plane surrounds the orthographic projection of the magnet assembly on the first plane. The magnetization directions of the first magnet and the second magnet are opposite, so that magnetic fields generated by the first magnet and the second magnet in the area where the wireless charging coil is located are weakened mutually. Thus, the magnetic field intensity of the magnet assembly in the area where the wireless charging coil is located can be effectively weakened, then the situation that the magnet assembly interferes with normal work of the wireless charging coil is effectively avoided, the wireless charging coil does not need to be arranged away from the magnet assembly, and improvement of the layout area and layout flexibility of the wireless charging coil is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, in particular to an electronic device. BACKGROUND

[0002] The internal part of an electronic device such as a watch, a bracelet, etc. can be provided with a magnet assembly. The electronic device can be attracted to a wireless charging base by the magnet assembly, so that the wireless charging coil inside the electronic device and the wireless charging coil inside the wireless charging base are aligned to generate electromagnetic induction, thereby realizing wireless charging function.

[0003] However, the magnetic field generated by the magnet assembly can affect the normal operation of the magnetic sensitive device (for example, the wireless charging coil, the magnetometer, etc.) inside the electronic device. CONTENT OF THE UTILITY MODEL

[0004] Some embodiments of the present application provide an electronic device, which can effectively avoid the magnetic field generated by the magnet assembly from affecting the normal operation of the magnetic sensitive device inside the electronic device. The following detailed description of the present application and the implementation modes and beneficial effects below can be mutually referred to.

[0005] In a first aspect, the embodiments of the present application provide an electronic device, specifically, the electronic device includes a wireless charging coil and a magnet assembly. The magnet assembly includes at least one first magnet and at least one second magnet arranged on a first plane. The orthographic projection of the wireless charging coil on the first plane surrounds the orthographic projection of the magnet assembly on the first plane. The magnetization directions of the first magnet and the second magnet are opposite, so that the magnetic fields generated by the first magnet and the second magnet in the area where the wireless charging coil is located weaken each other.

[0006] The above-mentioned electronic device, by arranging the first magnet and the second magnet with different magnetization directions, can make the magnetic fields generated by the first magnet and the second magnet in the area where the wireless charging coil is located weaken each other, so as to effectively weaken the magnetic field intensity of the magnet assembly in the area where the wireless charging coil is located, thereby effectively avoiding the interference of the magnet assembly with the normal operation of the wireless charging coil. The wireless charging coil does not need to be arranged far away from the magnet assembly, which helps to improve the layout area and flexibility of the wireless charging coil.

[0007] It should be noted that the orthographic projection of the wireless charging coil on the first plane surrounds the whole of the orthographic projection of the magnet assembly on the first plane, rather than a certain part of the orthographic projection of the magnet assembly on the first plane.

[0008] In some possible implementation modes of the above-mentioned first aspect, the magnet assembly is used to be attracted to the magnet in the paired electronic device, so that the electronic device can be reliably connected to the paired electronic device.

[0009] In some possible implementation modes of the first aspect, the number of the first magnets and the number of the second magnets are one respectively. The first magnet is a column structure extending along a first direction, and the first direction is perpendicular to the first plane. The second magnet is a ring structure arranged around the first direction and surrounds the first magnet. The magnetization direction of the first magnet and the magnetization direction of the second magnet are both parallel to the first direction, or the magnetization direction of the first magnet and the magnetization direction of the second magnet are both parallel to the first plane.

[0010] In the magnet assembly, the magnetic field in the area where the wireless charging coil is located can be weakened by arranging one first magnet and one second magnet, and the overall structure is simple.

[0011] In some possible implementation modes of the first aspect, the magnet assembly is rectangular, the number of the first magnets and the number of the second magnets are multiple respectively, the multiple first magnets and the multiple second magnets are arranged alternately along a second direction, and the second direction is parallel to the first plane. In addition, the magnetization direction of the multiple first magnets and the magnetization direction of the multiple second magnets are both parallel to the second direction, or the magnetization direction of the multiple first magnets and the magnetization direction of the multiple second magnets are both perpendicular to the first plane.

[0012] In the magnet assembly, the magnetic field in the area where the wireless charging coil is located can be weakened by arranging multiple first magnets and multiple second magnets, and the magnetic field strength in the area where the wireless charging coil is located can be more accurately controlled.

[0013] In some possible implementation modes of the first aspect, the magnet assembly is circular or annular, the number of the first magnets and the number of the second magnets are multiple respectively, the multiple first magnets and the multiple second magnets are arranged alternately along the circumferential direction of the circular or annular shape. The magnetization direction of the multiple first magnets and the magnetization direction of the multiple second magnets are both perpendicular to the first plane.

[0014] In the magnet assembly, the magnetic field in the area where the wireless charging coil is located can be weakened by arranging multiple first magnets and multiple second magnets, and the magnetic field strength in the area where the wireless charging coil is located can be more accurately controlled.

[0015] It can be understood that the direction perpendicular to the first plane can be the axial direction of the circular or annular shape, that is, the magnetization direction of the multiple first magnets and the magnetization direction of the multiple second magnets are both parallel to the axial direction of the circular or annular shape.

[0016] In some possible implementation modes of the first aspect, the magnet assembly includes a first magnet array and a second magnet array. The first magnet array is sleeved on the second magnet array, the first magnet array includes first magnets and second magnets arranged alternately along the circumferential direction, and the second magnet array includes first magnets and second magnets arranged alternately along the circumferential direction.

[0017] In the magnet assembly, the plurality of first magnets and the plurality of second magnets are arranged to more accurately control the magnetic field intensity in the area where the wireless charging coil is located, so as to weaken the magnetic field in the area where the wireless charging coil is located.

[0018] In some possible implementation of the first aspect, the first magnets of the first magnet array and the second magnets of the second magnet array are alternately arranged in the radial direction, and the second magnets of the first magnet array and the first magnets of the second magnet array are alternately arranged in the radial direction.

[0019] In this way, more first magnets and second magnets are alternately arranged, so as to more accurately control the magnetic field intensity in the area where the wireless charging coil is located, so as to weaken the magnetic field in the area where the wireless charging coil is located.

[0020] In some possible implementation of the first aspect, the distance between the orthographic projection of the wireless charging coil on the first plane and the orthographic projection of the magnet assembly on the first plane is less than or equal to 4 cm, for example, 4 cm, 3 cm, 2 cm or 1 cm, etc. That is, the wireless charging coil can be arranged close to the magnet assembly, and the layout of the wireless charging coil is more flexible.

[0021] In some possible implementation of the first aspect, the ratio between the magnetic field intensity of the first magnet in the area where the wireless charging coil is located and the magnetic field intensity of the second magnet in the area where the wireless charging coil is located is, for example, 0.8-1.2, for example, 0.8, 0.9, 1 or 1.1, etc.

[0022] In this way, it can be ensured that the magnetic field intensity of the first magnet in the area where the wireless charging coil is located is substantially the same as the magnetic field intensity of the second magnet in the area where the wireless charging coil is located, so as to improve the weakening effect of the magnetic field generated by the first magnet and the second magnet in the area where the wireless charging coil is located.

[0023] In some possible implementation of the first aspect, the electronic device further includes a magnetometer, the orthographic projection of the magnetometer on the first plane does not overlap the orthographic projection of the magnet assembly on the first plane, and the magnetic field generated by the first magnet and the second magnet in the area where the magnetometer is located weakens each other.

[0024] Since the magnetic field generated by the first magnet and the second magnet in the area where the magnetometer is located weakens each other, the magnetic field intensity of the magnet assembly in the area where the magnetometer is located can be effectively weakened, thereby avoiding the interference of the magnet assembly on the normal work of the magnetometer. The magnetometer does not need to be arranged far away from the magnet assembly, which helps to improve the layout area and layout flexibility of the magnetometer.

[0025] In some possible implementation forms of the first aspect, the distance between the normal projection of the magnetometer on the first plane and the normal projection of the magnet assembly on the first plane is less than or equal to 4 cm, for example, 4 cm, 3 cm, 2 cm or 1 cm, etc. That is, the magnetometer can be arranged close to the magnet assembly, and the layout of the magnetometer is more flexible.

[0026] In some possible implementation forms of the first aspect, the electronic device further includes a mainboard, the mainboard and the magnet assembly are stacked along a first direction, and the magnetometer is arranged on the mainboard, where the first direction is perpendicular to the first plane.

[0027] In some possible implementation forms of the first aspect, the magnet assembly is mounted on the mainboard or a rear cover of the electronic device.

[0028] In some possible implementation forms of the first aspect, the first direction is a thickness direction of the electronic device. For example, the thickness direction of the electronic device may, for example, be a direction perpendicular to a plane on which a display screen of the electronic device is located, or in other words, the thickness direction of the electronic device may, for example, be a direction parallel to a direction in which the rear cover of the electronic device points to the display screen of the electronic device. BRIEF DESCRIPTION OF DRAWINGS

[0029] FIG. 1A A perspective view of a watch in some embodiments is shown;

[0030] FIG. 1B An exploded view of a watch in some embodiments is shown;

[0031] FIG. 2A An exemplary structure of a magnet assembly in a watch in some embodiments is shown;

[0032] FIG. 2B According to FIG. 2A A magnetic field line diagram of a magnet assembly in some embodiments is shown;

[0033] FIG. 3A According to FIG. 2A A magnetic field distribution simulation diagram of a magnet assembly along a first plane in some embodiments is shown;

[0034] FIG. 3B According to FIG. 2A A magnetic field distribution simulation diagram of a magnet assembly along a second plane in some embodiments is shown;

[0035] FIG. 4 A magnetic field distribution simulation diagram of a magnet assembly in a region of a mainboard in an embodiment of the present application is shown;

[0036] FIG. 5A A cross-sectional view of part of a watch in an embodiment of the present application is shown;

[0037] FIG. 5B Fig. 1 shows a perspective view of a part of the structure of a watch according to an embodiment of the present application;

[0038] FIG. 5C Fig. 2 shows an exploded view of a part of the structure of a watch according to an embodiment of the present application;

[0039] FIG. 6A Fig. 3 shows an exemplary structure of a magnet assembly according to an embodiment of the present application;

[0040] FIG. 6B According to FIG. 6A Fig. 4 shows a magnetic field line diagram of a magnet assembly according to an embodiment of the present application in the area of a wireless charging coil;

[0041] FIG. 7 Fig. 5 shows a setting mode of a wireless charging coil relative to a magnet assembly according to an embodiment of the present application;

[0042] FIG. 8A According to FIG. 6A Fig. 6 shows a magnetic field distribution simulation diagram of a magnet assembly along a first plane;

[0043] FIG. 8B According to FIG. 6A Fig. 7 shows a magnetic field distribution simulation diagram of a magnet assembly along a second plane;

[0044] FIG. 9 According to FIG. 6A Fig. 8 shows a magnetic field line diagram of a magnet assembly according to an embodiment of the present application in the area of a magnetometer;

[0045] FIG. 10 Fig. 9 shows a setting mode of a magnetometer relative to a magnet assembly according to an embodiment of the present application;

[0046] FIG. 11A Fig. 10 shows an exemplary structure of a magnet assembly according to an embodiment of the present application, which is a perspective view of the magnet assembly;

[0047] FIG. 11B Fig. 11 shows an exemplary structure of a magnet assembly according to an embodiment of the present application, which is a top view of the magnet assembly;

[0048] FIG. 12A Fig. 12 shows an exemplary structure of a magnet assembly according to an embodiment of the present application, which is a perspective view of the magnet assembly;

[0049] FIG. 12B Fig. 13 shows an exemplary structure of a magnet assembly according to an embodiment of the present application, which is a top view of the magnet assembly;

[0050] FIG. 13A Fig. 14 shows an exemplary structure of a magnet assembly according to an embodiment of the present application, which is a perspective view of the magnet assembly;

[0051] FIG. 13B An exemplary structure four of the magnet assembly in an embodiment of this application is shown, which is a top view of the magnet assembly;

[0052] FIG. 14A An exemplary structure five of the magnet assembly in an embodiment of this application is shown, which is a perspective view of the magnet assembly;

[0053] FIG. 14B An exemplary structure five of the magnet assembly in an embodiment of this application is shown, which is a top view of the magnet assembly;

[0054] FIG. 15A An exemplary structure six of the magnet assembly in an embodiment of this application is shown, which is a perspective view of the magnet assembly;

[0055] FIG. 15B An exemplary structure six of the magnet assembly in an embodiment of this application is shown, which is a top view of the magnet assembly. Detailed Implementation

[0056] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0057] This application provides an electronic device that can be magnetically attached to a paired electronic device to achieve wireless charging. It is understood that the electronic device provided in this application can be, for example, a watch, a bracelet, or a wireless charging dock. Any electronic device with magnetic attachment can be used as the electronic device in this application, and this application does not specifically limit its use. For ease of description, a watch is used as an example below.

[0058] FIG. 1A and FIG. 1B The diagram shows a structural schematic of watch 1a in some technical solutions, wherein, FIG. 1A A 3D view of watch 1a. FIG. 1B This is an exploded view of watch 1a.

[0059] refer to FIG. 1A and FIG. 1B The watch 1a includes a main body 10 and two watch straps 20. The two watch straps 20 are connected to opposite sides of the main body 10 and can be detachably locked to each other so that the watch 1a can be worn on the user's wrist.

[0060] Understandable. FIG. 1A and FIG. 1BThe main body 10 in the illustrated embodiment is generally similar to a flat cylindrical structure extending in the Z direction. Among them, the cylindrical structure can include a cylindrical structure and a structure similar to a cylinder (for example, the outer surface of the cylindrical structure can be locally concave or locally convex). In other embodiments, the main body 10 can also be a cuboid structure or other special-shaped structure, which is not limited in the present application.

[0061] The following continues to take the main body 10 as an example to introduce the technical solutions of the present application. FIG. 1A and FIG. 1B The main body 10 illustrated is taken as an example to introduce the technical solutions of the present application. Continue to refer to FIG. 1A and FIG. 1B , the main body 10 can include a back cover 11, a middle frame 12 and a display screen 13. The back cover 11 and the display screen 13 are respectively installed on the opposite sides of the middle frame 12 in the Z direction.

[0062] When the watch 1a is worn on the wrist of the user, the back cover 11 is attached to the wrist of the user, and the display screen 13 faces away from the wrist of the user. In some of the implementations, the back cover 11 and the middle frame 12 can be an integrated structure, that is, the back cover 11 and the middle frame 12 can be integrally formed, for example, the back cover 11 and the middle frame 12 can be formed into an integrated structure by injection molding process. In some other implementations, the back cover 11 and the middle frame 12 can also be a split structure, that is, the back cover 11 and the middle frame 12 can be respectively formed, and then assembled together.

[0063] The above-mentioned back cover 11, middle frame 12 and display screen 13 can jointly enclose a cavity (not shown), and various electronic devices can be arranged in the cavity, such as the magnet assembly 100a, the wireless charging coil 200, the main board 300, the magnetometer 400 and the battery 500.

[0064] Among them, the magnet assembly 100a is used to be adsorbed with a paired electronic device, for example, the watch 1a can be adsorbed with a wireless charging base through the magnet assembly 100a, so that the wireless charging coil 200 of the watch 1a can be matched with the wireless charging coil inside the wireless charging base to generate electromagnetic induction, and then generate an induced current. The induced current can be transmitted to the main board 300, and then the current is transmitted to the battery 500 through the charging management circuit on the main board 300, and finally the battery 500 is charged. The magnetometer 400 can be arranged on the main board 300, and the magnetometer 400 is used to detect the magnetic field data (for example, the geomagnetic inclination data) of the position of the watch 1a, and then realize the functions of navigation, positioning, motion mode recognition, etc.

[0065] At present, the magnet assembly 100a is a magnet structure with a single magnetization direction, and the magnet assembly 100a has a strong magnetic field in each direction, which will affect the normal work of the magnetic sensitive devices (for example, the wireless charging coil 200, the magnetometer 400, etc.) in the watch 1a. Among them, the magnet assembly 100a needs to have a certain magnetic attraction force to ensure the adsorption reliability between the watch 1a and the paired device, and the greater the magnetic attraction force, the greater the magnetic field strength, thereby the greater the influence on the magnetic sensitive devices (for example, the wireless charging coil 200, the magnetometer 400, etc.).

[0066] Specifically, FIG. 2A An exemplary structure of the magnet assembly 100a in the watch 1a in some embodiments is shown. FIG. 2B According to FIG. 2A A magnetic induction line diagram of the magnet assembly 100a in some embodiments is shown. Referring to FIG. 2A and FIG. 2B , the magnet assembly 100a is arranged in the first plane F1. The magnet 100a is composed of a single magnet, and the magnetization direction thereof is the Z positive direction (for example, the Z1 direction), and the Z direction is perpendicular to the first plane F1. In other embodiments, the magnet assembly 100a can also be composed of a plurality of magnets arranged in the first plane F1, and the magnetization directions of the plurality of magnets are the same. It can be understood that the plurality of magnets with the same magnetization direction can be approximately regarded as a magnet as a whole. The magnetic induction line of the magnet assembly 100a starts from the N pole and finally enters the S pole, so that the magnet assembly 100a has a strong magnetic field in each direction.

[0067] FIG. 3A According to FIG. 2A A magnetic field distribution simulation diagram of the magnet assembly 100a along the first plane F1 in some embodiments is shown. FIG. 3B According to FIG. 2A A magnetic field distribution simulation diagram of the magnet assembly 100a along the second plane F2 in some embodiments is shown, wherein the second plane F2 is parallel to the Z direction. It should be noted that, FIG. 3A and FIG. 3B The embodiment shown only shows the magnetic field distribution in a square region with a side length of 5 cm, and, FIG. 3A and FIG. 3B The magnet assembly 100a in the embodiment shown is composed of two magnets with the Z1 direction as the magnetization direction.

[0068] Referring to FIG. 3A, the magnet assembly 100a has a stronger magnetic field along the first plane F1, for example, the distance between the P1 position and the center Pa of the magnet assembly 100a is 2.3 cm, and the magnetic field strength of the magnet assembly 100a at the P1 position is about 1.5 mT. It should be noted that in the embodiment of the present application, the magnet assembly 100a is a cylindrical structure, and the center Pa of the magnet assembly 100a can be the midpoint of the line between the top center and the bottom center of the cylindrical structure.

[0069] Reference FIG. 3B , the magnet assembly 100a also has a stronger magnetic field along the second plane F2, for example, the distance between the P1 position and the center Pa of the magnet assembly 100a is 0.8 cm, and the magnetic field strength of the magnet assembly 100a at the P1 position is about 1.5 mT.

[0070] To avoid interference of the magnet assembly 100a with the normal operation of the magnetically sensitive device (for example, the wireless charging coil 200, the magnetometer 400, etc.), in some technical solutions, the magnetically sensitive device can be arranged away from the magnet assembly 100a.

[0071] For example, FIG. 1B The wireless charging coil 200 in the embodiment shown in the figure has a distance greater than 4 cm, for example, 4.5 cm, 5 cm, 5.5 cm, etc., between the orthographic projection of the wireless charging coil 200 in the first plane F1 and the orthographic projection of the magnet assembly 100a in the first plane F1. The layout area of the wireless charging coil 200 is limited.

[0072] For another example, FIG. 4 The figure shows the magnetic field distribution simulation of the magnet assembly 100a in the area of the mainboard 300 in the embodiment of the present application, wherein, for the convenience of observation, FIG. 4 The circular area surrounded by the dashed line in the figure shows the setting direction of the magnet assembly 100a relative to the mainboard 300, and the rectangular area surrounded by the dashed line shows the setting direction of the magnetometer 400 on the mainboard 300. Reference FIG. 4 The light-colored area (for example, the irregular areas A1 and A2 surrounded by the dashed line) in the mainboard 300 is far away from the magnet assembly 100a, and the magnetic field strength is weak, for example, the magnetic field strength is about 0.3 mT; the dark-colored area (for example, the area other than the areas A1 and A2) in the mainboard 300 is closer to the magnet assembly 100a than the areas A1 and A2, and the magnetic field strength is stronger, for example, the magnetic field strength is about 1 mT. Based on this, the magnetometer 400 can only be arranged in the areas A1 and A2, and the layout area of the magnetometer 400 is limited.

[0073] Alternatively, in other implementations, a flexible circuit board can be additionally provided, and the magnetometer 400 can be arranged on the flexible circuit board to adjust the position of the magnetometer 400 so that the magnetometer 400 is far enough away from the magnet assembly 100a. However, this way is difficult to ensure the reliable fixation of the magnetometer, and the assembly is difficult.

[0074] In addition, in the above technical solution, the distance between the magnetically sensitive device (for example, the wireless charging coil 200, the magnetometer 400, etc.) and the magnet assembly 100a is limited by the size of the watch 1a, and therefore, the influence of the magnet assembly 100a on the magnetically sensitive device cannot be effectively eliminated, and the magnetically sensitive device cannot be arranged to be larger, and the working performance is limited. If the distance between the magnetically sensitive device and the magnet assembly 100a is set to be larger, the miniaturization design requirement of the watch 1a cannot be met.

[0075] In other technical solutions, a magnetic shield can also be arranged on the magnet assembly 100a to adjust the magnetic field distribution of the magnet assembly 100a, so as to achieve magnetic shielding, thereby avoiding the influence of the magnet assembly 100a on the magnetically sensitive device such as the wireless charging coil 200 and the magnetometer 400.

[0076] However, the magnetic shielding effect of the magnetic shield is related to the thickness of the magnetic shield, and the thickness of the magnetic shield is limited by the size of the watch 1a, and therefore, the magnetic shielding effect of the magnetic shield is limited. In addition, the magnetic shield occupies a certain thickness space, which is not conducive to the miniaturization design of the watch 1a. Finally, the material of the magnetic shield is mostly a material with strong magnetic permeability (for example, a steel plate cold rolled coil (SPCC)), which is easy to cause corrosion problems, and the magnetic shield needs to be additionally treated to resist corrosion, which further increases the complexity of the process and the production cost.

[0077] Therefore, the watch provided in the present application can effectively weaken the magnetic field strength in the region where the magnetically sensitive device (for example, the wireless charging coil, the magnetometer, etc.) is located, so that the magnetically sensitive device does not need to be arranged far away from the magnet assembly, which can improve the layout space and flexibility of the magnetically sensitive device, and help to realize the miniaturization design of the watch. In addition, by weakening the magnetic field in a specific region, it can also ensure that the magnet assembly has sufficient magnetic field strength in other regions, so as to have sufficient magnetic attraction to ensure the adsorption reliability between the watch and the paired device.

[0078] The technical solutions of the present application will be described below with reference to the accompanying drawings.

[0079] FIG. 5A to FIG. 5CFig. 1 shows a structural schematic diagram of part of the watch 1 in the embodiment of the present application, wherein, FIG. 5A Fig. 2 shows a sectional view of part of the watch 1 in the embodiment of the present application, FIG. 5B Fig. 3 shows a perspective view of part of the watch 1 in the embodiment of the present application, FIG. 5C Fig. 4 shows an exploded view of part of the watch 1 in the embodiment of the present application. In order to facilitate observation, FIG. 5B Fig. 5 shows a sectional view of part of the watch 1 in the embodiment of the present application, FIG. 5C Fig. 6 shows a perspective view of part of the watch 1 in the embodiment of the present application.

[0080] Referring to FIG. 5A to FIG. 5C , the main body 10 of the watch 1 comprises a back cover 11, a middle frame 12 and a display screen 13, and the back cover 11, the middle frame 12 and the display screen 13 jointly enclose a containing cavity S1, which contains various electronic devices, such as a magnet assembly 100, a wireless charging coil 200, a mainboard 300, a magnetometer 400 and a battery 500.

[0081] The structure and arrangement of the back cover 11, the middle frame 12 and the display screen 13 are substantially the same as those of the back cover 11, the middle frame 12 and the display screen 13 of the mobile phone 1a in the embodiments shown in FIG. 1A and FIG. 1B The functions of the wireless charging coil 200, the mainboard 300, the magnetometer 400 and the battery 500 are substantially the same as those of the wireless charging coil 200, the mainboard 300, the magnetometer 400 and the battery 500 of the mobile phone 1a in the embodiments shown in FIG. 1A and FIG. 1B Therefore, the relevant descriptions in the embodiments shown in FIG. 1A and FIG. 1B may be referred to, and will not be described here. The structure of the magnet assembly 100 in the embodiment of the present application, and the arrangement of the wireless charging coil 200, the mainboard 300 and the magnetometer 400 relative to the magnet assembly 100 will be described below in combination with the drawings.

[0082] Referring to FIG. 5A to FIG. 5C , the magnet assembly 100 comprises at least one first magnet 110 and at least one second magnet 120. For example, the number of the first magnets 110 can be one or more (for example, two, three or four, etc.), and the number of the second magnets 120 can be one or more (for example, two, three or four, etc.). The first magnets 110 and the second magnets 120 are arranged on a first plane F1 (as an example of the first plane). That is, the first magnets 110 and the second magnets 120 both overlap the first plane F1. For example, FIG. 5A to FIG. 5CIn the shown embodiment, the bottom surface of the first magnet 110 and the bottom surface of the second magnet 120 respectively overlap the first plane F1. In other embodiments, other parts of the first magnet 110 and the second magnet 120 can overlap the first plane F1, which is not limited in the present application. Alternatively, it can also be understood that the first magnet 110 and the second magnet 120 are distributed along a direction parallel to the first plane F1. It can be understood that the first plane F1 in the present application is a reference plane, rather than an actually existing physical surface.

[0083] The orthographic projection of the wireless charging coil 200 on the first plane F1 surrounds the orthographic projection of the magnet assembly 100 on the first plane F1. It should be noted that in the embodiments of the present application, A surrounds B means that A surrounds the whole of B, and if B is composed of multiple sub-structures, A surrounds the whole composed of multiple sub-structures, rather than some sub-structures, which will not be described below.

[0084] In some embodiments, the wireless charging coil 200 can be a continuous ring structure, and the orthographic projection of the wireless charging coil 200 on the first plane F1 can be a closed ring. In other embodiments, the wireless charging coil 200 can also be a discontinuous ring structure, that is, a ring structure with a gap, and the orthographic projection of the wireless charging coil 200 on the first plane F1 can be an open ring, which is not limited in the present application.

[0085] The magnetization directions of the first magnet 110 and the second magnet 120 of the magnet assembly 100 are opposite, so that the magnetic fields generated by the first magnet 110 and the second magnet 120 in the area where the wireless charging coil 200 is located weaken each other. In this way, the magnetic field strength of the magnet assembly 100 in the area where the wireless charging coil 200 is located can be effectively reduced, and the wireless charging coil 200 does not need to be arranged far away from the magnet assembly 100, thereby improving the layout area and flexibility of the wireless charging coil 200. Moreover, in a limited layout space, the wireless charging coil 200 can be arranged as large as possible, thereby effectively improving the charging efficiency of the wireless charging coil 200. At the same time, the miniaturization design requirement of the watch 1 can also be met.

[0086] For ease of understanding, the specific principle of realizing the magnetic field weakening effect will be introduced below in combination with the specific structure of the magnet assembly 100 and the corresponding magnetic induction line diagram.

[0087] Specifically, FIG. 6A An exemplary structure one of the magnet assembly 100 in the embodiments of the present application is shown. Referring to FIG. 1, the magnet assembly 100 includes a first magnet 110 and a second magnet 120. FIG. 6A, the number of the first magnet 110 and the second magnet 120 of the magnet assembly 100 is one respectively. The first magnet 110 is a columnar structure extending along the Z direction (as an example of the first direction). The second magnet 120 is a ring structure arranged around the Z direction, and surrounds the first magnet 110. It can be understood that the axial direction of the first magnet 110 and the axial direction of the second magnet 120 are both the Z direction, and the Z direction is perpendicular to the first plane F1. Exemplarily, the Z direction may, for example, be perpendicular to the plane where the display screen 13 of the watch 1 is located, or in other words, the Z direction may, for example, be parallel to the direction from the back cover 11 to the display screen 13. FIG. 5A to FIG. 5C Exemplarily, the thickness direction of the watch 1 in the embodiment shown in the figure may, for example, be perpendicular to the plane where the display screen 13 of the watch 1 is located, or in other words, the Z direction may, for example, be parallel to the direction from the back cover 11 to the display screen 13.

[0088] In the embodiment shown in the figure, the magnetization directions of the first magnet 110 and the second magnet 120 are both parallel to the Z direction, that is, the first magnet 110 and the second magnet 120 are axially magnetized, for example, the magnetization direction of the first magnet 110 is the Z positive direction (for example, the Z1 direction), and the magnetization direction of the second magnet 120 is the Z negative direction (for example, the Z2 direction). However, the present application is not limited thereto, and in other embodiments, the magnetization directions of the first magnet 110 and the second magnet 120 may, for example, be parallel to the first plane F1. That is, the first magnet 110 and the second magnet 120 are radially magnetized.

[0089] FIG. 6B According to FIG. 6A A schematic diagram of the magnetic induction lines of the magnet assembly 100 in the embodiment of the present application in the area where the wireless charging coil 200 is located is shown. Referring to FIG. 6B In the area where the wireless charging coil 200 is located, the magnetic induction lines of the first magnet 110 and the magnetic induction lines of the second magnet 120 are in opposite directions, so that the magnetic fields generated by the first magnet 110 and the second magnet 120 in the area where the wireless charging coil 200 is located can weaken each other. In this way, the magnetic field intensity of the magnet assembly 100 in the area where the wireless charging coil 200 is located can be effectively reduced, and the wireless charging coil 200 does not need to be arranged far away from the magnet assembly 100, effectively improving the layout area and layout flexibility of the wireless charging coil 200.

[0090] Exemplarily, FIG. 7 A setting mode of the wireless charging coil 200 relative to the magnet assembly 100 in the embodiment of the present application is shown. Referring to FIG. 7 In some embodiments of the present application, the distance G1 between the orthographic projection S2 of the wireless charging coil 200 on the first plane F1 and the orthographic projection S1 of the magnet assembly 100 on the first plane F1 is less than or equal to 4 cm, for example, 4 cm, 3 cm, 2 cm or 1 cm, etc. That is, the wireless charging coil 200 can be arranged close to the magnet assembly 100.

[0091] FIG. 8A According to FIG. 6AA simulation diagram of the magnetic field distribution of the magnet assembly 100 along the first plane F1 is shown. FIG. 8B According to FIG. 6A A simulation diagram of the magnetic field distribution of the magnet assembly 100 along the second plane F2 is shown. It should be noted that, FIG. 8A and FIG. 8B In the embodiment shown, only the magnetic field distribution in a square region with a side length of 5 cm is shown, wherein the diameter of the first magnet 110 is 4.5 mm, the outer diameter of the second magnet 120 is 8 mm, the inner diameter of the second magnet 120 is 5 mm, and the size of the first magnet 110 and the second magnet 120 along the Z direction is 0.8 mm.

[0092] Reference FIG. 8B and comparison FIG. 3B , compared with the magnet assembly 100a, the magnetic field of the magnet assembly 100 along the first plane F1 is effectively reduced. For example, in FIG. 3B the embodiment shown, the magnetic field strength of the magnet assembly 100a at the P1 position is about 1.5 mT, and the distance between the P1 position and the center Pa is 2.3 cm. While the magnetic field strength of the magnet assembly 100 provided by the present application at the P3 position is about 0.6 mT, which is 40% of the original, and the distance between the P3 position and the center P is 2.3 cm. It should be noted that in this embodiment, the magnet assembly 100 is a cylindrical structure, so the center P of the magnet assembly 100 can be the midpoint of the line connecting the center of the top surface and the center of the bottom surface of the cylindrical structure. In other embodiments, the magnet assembly 100 can also have other structures, for example, the magnet assembly 100 can also have a cuboid structure, so the center P of the magnet assembly 100 can be the intersection of the diagonal lines of the cuboid structure.

[0093] Reference FIG. 8A and comparison FIG. 3A , compared with the magnet assembly 100a, the magnetic field of the magnet assembly 100 along the second plane F2 is effectively reduced. For example, in FIG. 3A the embodiment shown, the magnetic field strength of the magnet assembly 100a at the P2 position is about 1.5 mT, and the distance between the P2 position and the center Pa is 0.8 cm. While the magnetic field strength of the magnet assembly 100 provided by the present application at the P4 position is about 0.6 mT, which is 40% of the original, and the distance between the P4 position and the center P is 0.8 cm.

[0094] In summary, compared with the above FIG. 2AThe magnet assembly 100 provided in the present application has the first magnet 110 and the second magnet 120 with different magnetization directions, so that the magnetic field intensity of the magnet assembly 100a in the area where the wireless charging coil 200 is located can be effectively weakened, thereby effectively avoiding the interference of the magnet assembly 100 on the wireless charging coil 200, and the wireless charging coil 200 does not need to be arranged far away from the magnet assembly, which helps to improve the layout area and layout flexibility of the wireless charging coil 200 and meet the miniaturization design requirements of the watch. In addition, the magnet assembly 100 provided in the present application has a simple overall structure, and the magnetic field weakening in a specific area can be achieved without additional setting of other devices, thereby reducing the cost.

[0095] The above takes the wireless charging coil 200 as an example of the magnetic sensitive device, and introduces the principle and effect of the first magnet 110 and the second magnet 120 of the magnet assembly 100 to weaken the magnetic field in a specific area. In some embodiments of the present application, the first magnet 110 and the second magnet 120 can also weaken the magnetic field in the area where other magnetic sensitive devices are located.

[0096] Specifically, taking the magnetic force meter 400 as an example of other magnetic sensitive devices, FIG. 9 According to FIG. 6A The magnetic field line diagram of the magnet assembly 100 in the area where the magnetic force meter 400 is located in the embodiments of the present application is shown. Referring to FIG. 9 , the orthogonal projection of the magnetic force meter 400 on the first plane F1 does not overlap with the orthogonal projection of the magnet assembly 100 on the first plane F1. In the area where the magnetic force meter 400 is located, the magnetic field line component of the first magnet 110 along the Z direction and the magnetic field line component of the second magnet 120 along the Z direction are opposite in direction, and the magnetic field line component of the first magnet 110 along the first plane F1 and the magnetic field line component of the second magnet 120 along the first plane F1 are opposite in direction. Therefore, the magnetic fields generated by the first magnet 110 and the second magnet 120 in the area where the magnetic force meter 400 is located can weaken each other. In this way, the magnetic field intensity of the magnet assembly 100 in the area where the magnetic force meter 400 is located can be effectively reduced, and the magnetic force meter 400 does not need to be arranged far away from the magnet assembly 100, thereby effectively improving the layout area and layout flexibility of the magnetic force meter 400.

[0097] Exemplarily, FIG. 10 A setting mode of the magnetic force meter 400 relative to the magnet assembly 100 in the embodiments of the present application is shown, and the mainboard 300 is also shown by a dashed line for ease of observation. Referring to FIG. 10 In some embodiments of the present application, the distance G2 between the orthogonal projection S3 of the magnetic force meter 400 on the first plane F1 and the orthogonal projection S1 of the magnet assembly 100 on the first plane F1 is less than or equal to 4 cm, for example, 4 cm, 3 cm, 2 cm or 1 cm, etc. That is, the magnetic force meter 400 can be arranged in the area of the mainboard 300 close to the magnet assembly 100.

[0098] After introducing the setup of the wireless charging coil 200, magnetometer 400 and other magnetically sensitive devices relative to the magnet assembly 100, the following section will continue to introduce the setup of other devices relative to the magnet assembly 100 with reference to the accompanying drawings.

[0099] Continue to refer to FIG. 5A to FIG. 5C In some embodiments of this application, the magnet assembly 100 can be stacked with the motherboard 300 along the Z direction. In this way, the layout space along the Z direction in the watch 1 can be fully utilized, which helps to achieve the miniaturization design of the watch 1.

[0100] It is understood that this application does not specifically limit the structural form of the motherboard 300. For example, the motherboard 300 may have an L-shaped structure, or it may be a disc-shaped structure with a rectangular notch. The battery 500 is disposed in the rectangular notch. In some other embodiments, the motherboard 300 may also be a disc-shaped structure without a notch, and the battery 500 may be mounted on the motherboard 300.

[0101] In some embodiments of this application, the magnet assembly 100 may be mounted on the rear cover 11. For example, FIG. 5A and FIG. 5C In the embodiment shown, the back cover 11 has a mounting groove 111, and the magnet assembly 100 can be disposed in the mounting groove 111 and fixedly connected to the groove wall of the mounting groove 111 (e.g., by bonding, snap-fitting or fastener connection).

[0102] In other embodiments of this application, the magnet assembly 100 may also be mounted on the motherboard 300. Exemplarily, the magnet assembly 100 may be fixedly mounted to the motherboard 300 by means of adhesive, snap-fit, or fastener connection.

[0103] In some embodiments of this application, the ratio between the magnetic field strength of the first magnet 110 in the region where the magnetic sensing device is located and the magnetic field strength of the second magnet 120 in the region where the magnetic sensing device is located can be 0.8-1.2, for example, 0.8, 0.9, 1, or 1.1. This ensures that the magnetic field strength of the first magnet 110 in the region where the magnetic sensing device is located is approximately the same as that of the second magnet 120 in the region where the magnetic sensing device is located, thereby enhancing the attenuation effect of the magnetic fields generated by the first magnet 110 and the second magnet 120 in the region where the magnetic sensing device is located.

[0104] For example, in some implementations, the ratio between the magnetic field strength of the first magnet 110 in the region where the wireless charging coil 200 is located and the magnetic field strength of the second magnet 120 in the region where the wireless charging coil 200 is located can be 0.8-1.2.

[0105] For example, in some other implementations, the ratio between the magnetic field strength of the first magnet 110 at the area where the magnetometer 400 is located and the magnetic field strength of the second magnet 120 at the area where the magnetometer 400 is located can be 0.8-1.2.

[0106] In some embodiments of the present application, the gap between the first magnet 110 and the second magnet 120 can be less than 5mm, for example, to facilitate assembly while ensuring that the distance between the first magnet 110 and the second magnet 120 is not too far. For example, the gap between the first magnet 110 and the second magnet 120 can be 0, 1mm, 2mm, or 3mm, etc.

[0107] The above FIG. 5A to FIG. 10 In the embodiments shown, the number of the first magnet 110 and the second magnet 120 of the magnet assembly 100 is one respectively, and the overall structure is relatively simple, but the present application is not limited thereto. In some other embodiments, the number of the first magnet 110 and the second magnet 120 of the magnet assembly 100 can also be multiple. By providing multiple first magnets 110 and multiple second magnets 120, the magnetic field strength at the area where the magnetically sensitive device is located can be more accurately controlled, so as to facilitate the weakening of the magnetic field at the area where the magnetically sensitive device is located. The following exemplary embodiments are described in conjunction with the accompanying drawings.

[0108] FIG. 11A And FIG. 11B Fig. 2 shows an exemplary structure of the magnet assembly 100 in the embodiments of the present application, wherein, FIG. 11A Fig. 1 is a perspective view of the magnet assembly 100, FIG. 11B Fig. 2 is a top view of the magnet assembly 100. Referring to FIG. 11A And FIG. 11B The magnet assembly 100 is circular. It can also be understood that the orthographic projection of the magnet assembly 100 on the first plane F1 is circular. Or in other words, the cross section of the magnet assembly 100 parallel to the first plane F1 is circular.

[0109] In the embodiments shown, the number of the first magnet 110 and the second magnet 120 is multiple. For example, FIG. 11A And FIG. 11B Taking the two first magnets 110 and the two second magnets 120 in the embodiments shown as an example, the two first magnets 110 and the two second magnets 120 are arranged alternately along the circumferential direction (e.g., the M direction) of the circular shape. And the magnetization direction of the first magnet 110 and the second magnet 120 is parallel to the Z direction. For example, the magnetization direction of the first magnet 110 is the Z1 direction, and the magnetization direction of the second magnet 120 is the Z2 direction. It can be understood that the Z direction is the axial direction of the circular shape.

[0110] Exemplarily, rotating one of the first magnets 110 around the center O of the circle in the N direction by a certain angle can make the first magnet 110 completely coincide with the other first magnet 110; rotating one of the second magnets 120 around the center O of the circle in the N direction by a certain angle can make the second magnet 120 completely coincide with the other second magnet 120.

[0111] It can be understood that the above FIG. 11A and FIG. 11B The embodiments shown in the above

[0112] FIG. 12A and FIG. 12B Exemplary structure three of the magnet assembly 100 in the embodiment of the present application is shown in FIG. 3, wherein, FIG. 12A is a perspective view of the magnet assembly 100, FIG. 12B is a top view of the magnet assembly 100. Referring to FIG. 12A and FIG. 12B , the magnet assembly 100 is annular. It can also be understood that the normal projection of the magnet assembly 100 on the first plane F1 is annular. Or, the cross section of the magnet assembly 100 parallel to the first plane F1 is annular.

[0113] The number of the first magnets 110 and the second magnets 120 is multiple. It can be understood that the arrangement mode of the multiple first magnets 110 and the multiple second magnets 120 in the annular magnet assembly 100 is substantially the same as the arrangement mode of the multiple first magnets 110 and the multiple second magnets 120 in the circular magnet assembly 100 shown in the above FIG. 11A and FIG. 11B Specifically, taking the two first magnets 110 and the two second magnets 120 in the above FIG. 12A and FIG. 12B embodiments as an example. The two first magnets 110 and the two second magnets 120 are arranged alternately along the circumferential direction (for example, the M direction) of the annulus. And, the magnetization directions of the first magnets 110 and the second magnets 120 are parallel to the Z direction. For example, the magnetization directions of the first magnets 110 are all in the Z1 direction, and the magnetization directions of the second magnets 120 are all in the Z2 direction.

[0114] It can be understood that the above FIG. 12A and FIG. 12BThe embodiment shown in the two first magnets 110 and two second magnets 120 as an example, but the application is not limited to this. In some alternative embodiments, the number of first magnets 110 and second magnets 120 can also be other numbers, for example, three, four or five, etc.

[0115] FIG. 13A And FIG. 13B The application shows an exemplary structure four of the magnet assembly 100 in the embodiment, FIG. 13A is a perspective view of the magnet assembly 100, FIG. 13B is a top view of the magnet assembly 100.

[0116] Reference FIG. 13A And FIG. 13B The magnet assembly 100 is circular, and the magnet assembly 100 can include a plurality of nested magnet arrays. For example, the magnet assembly 100 includes a first magnet array 101 and a second magnet array 102. Among them, the first magnet array 101 is similar to a columnar structure extending along the Z direction, and the second magnet array 102 is similar to a ring structure surrounding the Z direction, and is nested in the first magnet array 101.

[0117] Among them, the number of first magnets 110 and second magnets 120 is multiple. For example, FIG. 13A And FIG. 13B The four first magnets 110 and four second magnets 120 in the embodiment shown in the embodiment, the first magnet array 101 includes two first magnets 110 and two second magnets 120, and the second magnet array 102 includes another two first magnets 110 and another two second magnets 120. Among them, the first magnet 110 and the second magnet 120 of the first magnet array 101 are arranged alternately along the N direction, and the first magnet 110 and the second magnet 120 of the second magnet array 102 are arranged alternately along the N direction. And the magnetization direction of the first magnet 110 and the second magnet 120 is parallel to the Z direction. For example, the magnetization direction of the first magnet 110 is Z1 direction, and the magnetization direction of the second magnet 120 is Z2 direction.

[0118] Continue to refer to FIG. 13A And FIG. 13B In some implementations, the first magnet 110 of the first magnet array 101 and the second magnet 120 of the second magnet array 102 are arranged alternately along the radial direction of the circle, and the second magnet 120 of the first magnet array 101 and the first magnet 110 of the second magnet array 102 are arranged alternately along the radial direction of the circle.

[0119] It can be understood that the above FIG. 13A And FIG. 13BThe magnet assembly 100 in the illustrated embodiment can also be ring-shaped. When the magnet assembly 100 is ring-shaped, the first magnet array 101 and the second magnet array 102 are both ring-shaped. The arrangement of the plurality of first magnets 110 and the plurality of second magnets 120 in the ring-shaped magnet assembly 100 is substantially the same as the arrangement of the plurality of first magnets 110 and the plurality of second magnets 120 in the circular magnet assembly 100 in the illustrated embodiment, and thus reference can be made to the related description in the illustrated embodiment, which will not be repeated here. FIG. 13A and FIG. 13B The arrangement of the plurality of first magnets 110 and the plurality of second magnets 120 in the circular magnet assembly 100 in the illustrated embodiment is substantially the same as the arrangement of the plurality of first magnets 110 and the plurality of second magnets 120 in the circular magnet assembly 100 in the illustrated embodiment, and thus reference can be made to the related description in the illustrated embodiment, which will not be repeated here. FIG. 13A and FIG. 13B The arrangement of the plurality of first magnets 110 and the plurality of second magnets 120 in the circular magnet assembly 100 in the illustrated embodiment is substantially the same as the arrangement of the plurality of first magnets 110 and the plurality of second magnets 120 in the circular magnet assembly 100 in the illustrated embodiment, and thus reference can be made to the related description in the illustrated embodiment, which will not be repeated here.

[0120] It should also be understood that the above-mentioned FIG. 14A and FIG. 14B The illustrated embodiment is described by way of example with four first magnets 110 and four second magnets 120, but the present application is not limited thereto. In some alternative embodiments, the number of first magnets 110 and second magnets 120 can also be other numbers, for example, six, eight, etc.

[0121] FIG. 14A and FIG. 14B Fig. 5 shows an exemplary structure of the magnet assembly 100 in an embodiment of the present application, wherein FIG. 14A is a perspective view of the magnet assembly 100, FIG. 14B is a top view of the magnet assembly 100. Referring to FIG. 14A and FIG. 14B , the magnet assembly 100 is rectangular. It can also be understood that the orthogonal projection of the magnet assembly 100 on the first plane F1 is rectangular. Or in other words, the cross section of the magnet assembly 100 parallel to the first plane F1 is rectangular.

[0122] The number of first magnets 110 and second magnets 120 is a plurality. For example, in the illustrated embodiment of FIG. 11A and FIG. 11B two first magnets 110 and two second magnets 120, the two first magnets 110 and the two second magnets 120 are arranged alternately in a row along the X direction (as an example of the second direction), and the X direction is parallel to the first plane F1. Moreover, the magnetization directions of the first magnets 110 and the second magnets 120 are both parallel to the Z direction. For example, the magnetization directions of the first magnets 110 are all in the Z1 direction, and the magnetization directions of the second magnets 120 are all in the Z2 direction.

[0123] Exemplarily, translating one of the first magnets 110 in the X direction by a certain distance can make the first magnet 110 completely coincide with the other first magnet 110; translating one of the second magnets 120 in the X direction by a certain distance can make the second magnet 120 completely coincide with the other second magnet 120.

[0124] It can be understood that the above FIG. 15A and FIG. 15B The embodiment shown in the embodiment is introduced by taking two first magnets 110 and two second magnets 120 as an example, but the application is not limited to this. In some alternative embodiments, the number of first magnets 110 and second magnets 120 can also be other numbers, for example, three, four or five, etc.

[0125] In some embodiments of the application, the first magnet 110 and the second magnet 120 can also be arranged in multiple rows. For example, FIG. 15A and FIG. 15B An exemplary structure six of the magnet assembly 100 in the embodiment of the application is shown, wherein FIG. 15A is a perspective view of the magnet assembly 100, FIG. 15B is a top view of the magnet assembly 100. Referring to FIG. 15A and FIG. 15B , the number of first magnets 110 and second magnets 120 is four, respectively, wherein two first magnets 110 and two second magnets 120 are arranged in the first row along the X direction, and the other two first magnets 110 and the other two second magnets 120 are arranged in the second row along the X direction, and the first magnet 110 of the first row and the second magnet 120 of the second row are arranged alternately along the column direction (for example, Y direction), and the second magnet 120 of the first row and the first magnet 110 of the second row are arranged alternately along the Y direction, the Y direction is parallel to the plane F1, and perpendicular to the X direction.

[0126] It can be understood that the above FIG. 14A to FIG. 15B and FIG. 11A to FIG. 15B The embodiment shown in the embodiment is introduced by taking two first magnets 110 and two second magnets 120 as an example, but the application is not limited to this. In some alternative embodiments, the number of first magnets 110 and second magnets 120 can also be other numbers, for example, three, four or five, etc.

[0127] In addition, it can be understood that the above ​ The embodiment shown in the embodiment is only schematically shown the magnetization direction of the first magnet 110 and the second magnet 120, and does not constitute a limitation on the application. In other alternative embodiments, the magnetization direction of the first magnet 110 and the second magnet 120 can also be parallel to the direction of the first magnet 110 and the second magnet 120 arranged alternately, for example, the X direction or the Y direction.

[0128] In some embodiments of the application, the above ​The shapes of the first magnet 110 and the second magnet 120 in the illustrated example can be regular shapes such as a rectangle, a sector, a circle, a triangle, a pentagon, and the like, or other irregular shapes. The shapes of the first magnet 110 and the second magnet 120 can be the same or different, and the present application does not make a specific limitation thereon as long as the actual use requirements can be met.

[0129] The above describes the embodiments of the present application by specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. Although the description of the present application is introduced in combination with some examples, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. The present application can also not use these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details are omitted in the description. It should be noted that the examples and features in the examples in the present application can be combined with each other without conflict.

[0130] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "outer side", "inner side", "circumferential", "radial", "axial", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0131] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "arranged", "mounted", "connected", "attached" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0132] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An electronic device, comprising: The magnet assembly comprises at least one first magnet and at least one second magnet arranged in a first plane; The wireless charging coil surrounds the projection of the magnet assembly on the first plane. The magnet assembly comprises a first magnet array and a second magnet array, the first magnet array is sleeved on the second magnet array, the first magnet array comprises the first magnets and the second magnets arranged alternately along the circumferential direction, and the second magnet array comprises the first magnets and the second magnets arranged alternately along the circumferential direction. The first magnets of the first magnet array and the second magnets of the second magnet array are arranged alternately along the radial direction; and the second magnets of the first magnet array and the first magnets of the second magnet array are arranged alternately along the radial direction.

2. The electronic device of claim 1, wherein, The electronic device further comprises a magnetometer, the projection of the magnetometer on the first plane does not overlap with the projection of the magnet assembly on the first plane, and the magnetic field generated by the first magnet and the second magnet in the area where the magnetometer is located weakens each other. The electronic device further comprises a mainboard, the mainboard is stacked with the magnet assembly along a first direction, and the magnetometer is arranged on the mainboard, wherein the first direction is perpendicular to the first plane.

3. The electronic device of claim 1, wherein, The magnet assembly is mounted on the mainboard or a rear cover of the electronic device. The first direction is the thickness direction of the electronic device.

4. The electronic device of claim 1, wherein, ​ ​ 5. The electronic device of claim 4, wherein, ​ 6. The electronic device of claim 5, wherein, ​ 7. The electronic device of claim 1, wherein, ​ 8. The electronic device of claim 7, wherein, ​ 9. The electronic device of claim 8, wherein, ​ 10. The electronic device of claim 2 or 8, wherein, ​

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