A wireless charger

Abstract

A wireless charger includes an upper housing assembly, a lower housing assembly, and a magnetic sheet coil. An upper surface of the lower housing assembly is provided with a groove structure, which is coupled with the upper housing assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil. The magnetic sheet coil includes a magnetic sheet assembly and a coil assembly. An upper surface of the magnetic sheet assembly is provided with an annular groove for accommodating the coil assembly. The coil assembly converts electric energy into a wireless power signal and radiates the wireless power signal along a set direction under the limitation of the magnetic sheet assembly. The magnetic sheet assembly limits the radiation direction of the wireless power signal, avoiding the wireless power signal generated by the coil assembly from forming a vortex on other components inside the wireless charger, thereby preventing the temperature inside the wireless charger from rising.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless charging, in particular to a wireless charger. BACKGROUND

[0002] With the development of wireless charging technology, electronic devices can be charged by wireless chargers. The wireless charger converts electrical energy into wireless power signals and transmits them to the electronic devices to be charged, thereby realizing the function of wireless charging. However, the existing wireless chargers have defects such as unstable structure, poor internal heat dissipation, and slow charging speed, which are not conducive to the promotion and use of the products. SUMMARY

[0003] To solve the above problems, the embodiments of the present application provide a wireless charger, which comprises an upper shell assembly, a lower shell assembly and a magnetic sheet coil. The upper surface of the lower shell assembly is provided with a groove structure, and the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil. The magnetic sheet coil comprises a magnetic sheet assembly and a coil assembly. The upper surface of the magnetic sheet assembly is provided with an annular groove for accommodating the coil assembly. After the coil assembly converts electrical energy into wireless power signals, the wireless power signals are radiated in a set direction under the restriction of the magnetic sheet assembly. The magnetic sheet assembly restricts the radiation direction of the wireless power signals, thereby avoiding the formation of vortexes of the wireless power signals generated by the coil assembly on other components inside the wireless charger, and preventing the temperature inside the wireless charger from rising.

[0004] To this end, the embodiments of the present application adopt the following technical solutions:

[0005] The present application provides a wireless charger, which comprises an upper shell assembly, a lower shell assembly and a magnetic sheet coil. The upper surface of the lower shell assembly is provided with a groove structure, and the groove structure of the lower shell assembly is coupled with the upper shell assembly to form a cavity structure. The cavity structure is used to accommodate the magnetic sheet coil. The groove structure of the lower shell assembly is provided with a coil support plane for supporting the magnetic sheet coil. The upper surface of the magnetic sheet coil is in contact with the lower surface of the upper shell assembly. The upper surface of the magnetic sheet coil is the surface of the magnetic sheet coil close to the upper shell assembly. The lower surface of the upper shell assembly is the surface of the upper shell assembly forming the cavity structure. The magnetic sheet coil comprises a magnetic sheet assembly and a coil assembly. The magnetic sheet assembly is provided with an annular groove for accommodating the coil assembly. The direction of the opening of the annular groove points to the upper shell assembly. The top view shape of the magnetic sheet assembly, the annular groove and the coil assembly is a circular ring shape with a common center.

[0006] In one embodiment, the ratio between the outer radius of the magnetic sheet assembly and the inner radius of the magnetic sheet assembly is greater than 1.9.

[0007] In one embodiment, the ratio between the outer radius of the annular groove and the inner radius of the annular groove is greater than 1.7.

[0008] In one embodiment, the height of the inner magnetic sheet assembly of the annular groove is the same as the height of the outer magnetic sheet assembly of the annular groove.

[0009] In one embodiment, the middle portion of the lower surface of the upper housing assembly is provided with a convex structure, and the height of the inner magnetic sheet assembly of the annular groove is less than the height of the outer magnetic sheet assembly of the annular groove.

[0010] In one embodiment, the inner side wall of the groove structure of the lower housing assembly is provided with an upper housing support plane, the upper housing support plane supports the upper housing assembly, the upper housing support plane is close to the upper surface of the lower housing assembly, and the coil support plane is close to the bottom of the groove structure of the lower housing assembly.

[0011] In one embodiment, the lower surface edge of the upper housing assembly is a plane, and the height of the outer magnetic sheet assembly of the annular groove is equal to the height difference between the upper housing support plane and the coil support plane.

[0012] In one embodiment, the lower surface edge of the upper housing assembly is provided with an annular convex, and the height of the outer magnetic sheet assembly of the annular groove is greater than the height difference between the upper housing support plane and the coil support plane.

[0013] In one embodiment, the top view cross-sectional area of the opening of the annular groove is less than the top view cross-sectional area of the bottom of the annular groove; or, the top view cross-sectional area of the opening of the annular groove is less than the top view cross-sectional area of any position between the opening of the annular groove and the bottom of the annular groove.

[0014] In one embodiment, further comprising a circuit board, the circuit board is fixed to the lower surface of the magnetic sheet coil, and the lower surface of the magnetic sheet coil is the surface of the magnetic sheet coil close to the bottom of the groove structure of the lower housing assembly.

[0015] In one embodiment, at least one opening is provided on the outer magnetic sheet assembly of the annular groove, the at least one opening is used to couple with the positioning structure on the inner side wall of the groove structure of the lower housing assembly or is used as a connection lead between the coil assembly and the circuit board.

[0016] In one embodiment, further comprising a limiting magnet, the limiting magnet is arranged in the middle of the annular structure of the magnetic sheet assembly.

[0017] In one embodiment, the limiting magnet is fixed between the lower surface of the upper housing assembly and the bottom of the groove structure of the lower housing assembly.

[0018] In one embodiment, further comprising a heat dissipation ring, the heat dissipation ring is nested between the magnetic sheet assembly and the limiting magnet.

[0019] In one embodiment, the heat dissipation ring is fixed between the lower surface of the upper housing assembly and the bottom of the groove structure of the lower housing assembly. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings required to be used in the following embodiments or prior art description are briefly introduced.

[0021] Figure 1 A schematic diagram of a charging scene of a wireless charger and an electronic device provided in an embodiment of the present application;

[0022] Figure 2 A top view structural schematic diagram of a wireless charger provided in an embodiment of the present application;

[0023] Figure 3 An exploded view of a wireless charger provided in an embodiment of the present application;

[0024] Figure 4 A cross-sectional structural schematic diagram of a wireless charger provided in an embodiment of the present application;

[0025] Figure 5 A schematic diagram of a groove structure of a lower shell assembly of a wireless charger provided in an embodiment of the present application;

[0026] Figure 6 A top view structural schematic diagram of a lower shell assembly of a wireless charger provided in an embodiment of the present application;

[0027] Figure 7 A structural schematic diagram of an upper shell assembly of a wireless charger provided in an embodiment of the present application;

[0028] Figure 8 A structural schematic diagram of a magnetic sheet coil of a wireless charger provided in an embodiment of the present application;

[0029] Figure 9 A cross-sectional structural schematic diagram of a magnetic sheet coil of a wireless charger provided in an embodiment of the present application;

[0030] Figure 10 A structural schematic diagram of an electronic device and a wireless charger thereof provided in an embodiment of the present application;

[0031] Figure 11 A structural schematic diagram of a limiting magnet of a wireless charger provided in an embodiment of the present application;

[0032] Figure 12 A structural schematic diagram of another limiting magnet of a wireless charger provided in an embodiment of the present application;

[0033] Figure 13 A structural schematic diagram of another limiting magnet of a wireless charger provided in an embodiment of the present application;

[0034] Figure 14A position relationship schematic diagram among a magnetic sheet coil, a limiting magnet and a heat dissipation ring of a wireless charger provided in an embodiment of the present application;

[0035] Figure 15 A position relationship schematic diagram among a magnetic sheet coil, a limiting magnet and a heat dissipation ring of a wireless charger provided in an embodiment of the present application;

[0036] Figure 16 A position relationship schematic diagram among a magnetic sheet coil, a limiting magnet and a heat dissipation ring of a wireless charger provided in an embodiment of the present application;

[0037] Figure 17 A schematic diagram of a limiting magnet and a shielding assembly of a wireless charger provided in an embodiment of the present application;

[0038] Figure 18 A schematic diagram of a combination among 18 kinds of limiting magnets 230, shielding assemblies 280 and heat-conducting gels provided in an embodiment of the present application;

[0039] Figure 19 A heat transfer schematic diagram of a magnetic sheet coil, a limiting magnet and other heat generating components of a wireless charger provided in an embodiment of the present application;

[0040] Figure 20 A heat transfer schematic diagram of an electronic device provided in a wireless charger in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0042] In the description of the present application, the terms “center”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship 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 device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or abutting connection or integral connection; 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. In the embodiments of the present application, “contact” or “coupling” can mean direct contact between components, or contact between components through adhesive or heat-conducting gel.

[0044] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0045] Figure 1 A schematic diagram of a charging scenario of a charger and an electronic device provided in an embodiment of the present application. The electronic device 100 can be an electronic watch, a smartphone, wireless earphones, a tablet computer, a notebook computer, etc. The wireless charger 200 can be a portable wireless charger, a vehicle-mounted wireless charger, etc. During wireless charging, the electronic device 100 can be placed on the upper surface of the wireless charger 200, or the distance between the electronic device 100 and the wireless charger 200 is less than or equal to the charging distance. The wireless charger 200 converts electrical energy into a wireless power signal. After the electronic device 100 receives the wireless power signal, the electronic device 100 converts the wireless power signal into electrical energy to power the electronic device 100.

[0046] In an embodiment of the present application, when the wireless charger 200 is placed on a table, the "upper surface" refers to the surface of the wireless charger 200 that is away from the table. The upper surface of the wireless charger 200 can be a substrate for carrying the electronic device 100, can be a housing of the wireless charger 200, and other structural members. In an embodiment of the present application, the surface can be a plane or a curved surface. By analogy, the upper surface of each component in the wireless charger 200 refers to the surface of each component that is away from the table. The "lower surface" refers to the surface opposite to the "upper surface". In an embodiment of the present application, "upward" refers to the direction from the wireless charger 200 to the electronic device 100 during wireless charging. "Downward" refers to the direction opposite to "upward".

[0047] Figures 2-4 A schematic diagram of a wireless charger provided in an embodiment of the present application. As shown in Figures 2-4 The shape of the wireless charger 200 is a cylinder. In other embodiments, the wireless charger 200 can also be an elliptical cylinder, a polygonal cylinder, etc.

[0048] As shown in Figure 3As shown, the wireless charger 200 includes an upper housing assembly 210, a magnetic coil 220, a limiting magnet 230, a heat dissipation ring 240, a lower housing assembly 250, a circuit board 260, and a cable 270. The upper housing assembly 210 and the lower housing assembly 250 are coupled to form the outer shell of the wireless charger 200. A groove structure is provided on the upper surface of the lower housing assembly 250. After the groove structure of the upper housing assembly 210 and the lower housing assembly 250 is coupled, a cavity structure is formed between the upper housing assembly 210 and the lower housing assembly 250. The cavity structure is used to house the magnetic coil 220, the limiting magnet 230, the heat dissipation ring 240, and the circuit board 260. The lower housing assembly 250 is provided with a through hole to allow the cable 270 to enter the cavity structure. The cable 270 is electrically connected to the circuit board 260.

[0049] like Figure 3 As shown, the upper housing assembly 210, the limiting magnet 230, and the lower housing assembly 250 have circular top views, while the magnetic coil 220 and the heat dissipation ring 240 have annular top views. In this embodiment, the top view shape of the lower housing assembly 250 is related to the shape of the wireless charger 200. The overall shape of the wireless charger 200 is cylindrical, and the shape of the lower housing assembly 250 is also cylindrical. The shapes of the upper housing assembly 210, the magnetic coil 220, the limiting magnet 230, the heat dissipation ring 240, and the lower housing assembly 250 can be other shapes.

[0050] The upper surface of the lower housing assembly 250 is provided with a groove structure. The upper housing assembly 210 is coupled to the outlet of the groove structure of the lower housing assembly 250, and a cavity structure is formed between the upper housing assembly 210 and the lower housing assembly 250. The cavity structure is used to house components such as the magnetic sheet coil 220, the limiting magnet 230, the heat sink ring 240, and the circuit board 260.

[0051] like Figure 3 As shown, the top view shape of the groove structure of the lower housing assembly 250 is circular. In other embodiments, the top view shape of the groove structure of the lower housing assembly 250 can also be rectangular, elliptical, polygonal, or other shapes. The radius of the groove structure of the lower housing assembly 250 is equal to or slightly larger than the radius of the upper housing assembly 210. The upper housing assembly 210 is disposed at the outlet of the groove structure of the lower housing assembly 250, and the upper housing assembly 210 is embedded in the groove structure of the lower housing assembly 250. The upper surface of the upper housing assembly 210 and the upper surface of the lower housing assembly 250 are on the same plane.

[0052] In an embodiment, the lower housing assembly 250 comprises a side plate and a bottom plate. In the embodiment of the present application, the shape of the wireless charger 200 is a cylinder, the shape of the side plate of the lower housing assembly 250 is a circular ring cylinder, and the shape of the bottom plate of the lower housing assembly 250 is a circular flat plate. In other embodiments, the shape of the bottom plate of the lower housing assembly 250 is the same as the shape of the upper housing assembly 210.

[0053] In the assembly process, the bottom plate of the lower housing assembly 250 is fixed on the port on one side of the side plate of the lower housing assembly 250, forming the lower housing assembly 250 with a groove structure. The upper housing assembly 210 is fixed on the port on the other side of the side plate of the lower housing assembly 250, and the upper housing assembly 210, the side plate of the lower housing assembly 250, and the bottom plate of the lower housing assembly 250 form a cavity structure. In the embodiment of the present application, the lower housing assembly 250 is divided into two parts, the bottom plate and the side plate, which can be manufactured as two parts, reducing the manufacturing difficulty of the lower housing assembly 250.

[0054] Figures 5-6 A schematic view of the lower housing assembly of the wireless charger provided in the embodiment of the present application. The groove structure of the lower housing assembly 250 of the wireless charger 200 provided in the embodiment of the present application is provided with a plurality of support planes, which are respectively used to support a plurality of components in the upper housing assembly 210, the magnetic sheet coil 220, the limiting magnet 230, the heat dissipation ring 240, or the circuit board 260.

[0055] The upper housing assembly 210, the magnetic sheet coil 220, the limiting magnet 230, the heat dissipation ring 240, or the circuit board 260 respectively contact with the plurality of support planes of the lower housing assembly 250, and are transmitted to the gas outside the wireless charger 200 through the lower housing assembly 250, improving the heat dissipation capacity of the wireless charger 200.

[0056] As shown in Figure 5 The inner side wall of the groove structure of the lower housing assembly 250 is provided with an upper housing support plane 251. The upper housing support plane 251 is close to the upper surface of the lower housing assembly 250 and close to the opening of the groove structure of the lower housing assembly 250. The upper housing support plane 251 is used to support the upper housing assembly 210.

[0057] In the embodiment of the present application, the depth of the upper housing support plane 251 refers to the distance between the upper housing support plane 251 and the upper surface of the lower housing assembly 250.

[0058] In an embodiment, the depth of the upper housing support plane 251 is equal to the thickness of the upper housing assembly 210. The upper housing support plane 251 supports the upper housing assembly 210, and the upper surface of the upper housing assembly 210 and the upper surface of the lower housing assembly 250 are in the same plane.

[0059] In other embodiments, the depth of the upper housing support plane 251 may be slightly greater than the thickness of the upper housing assembly 210. Correspondingly, an adhesive may be added between the upper housing assembly 210 and the upper housing support plane 251, with the upper surfaces of the upper housing assembly 210 and the lower housing assembly 250 lying on the same plane. This alignment of the upper surfaces of the upper housing assembly 210 and the lower housing assembly 250 results in a flat upper surface for the wireless charger 200, which facilitates support of the electronic device on the upper surface of the wireless charger 200.

[0060] In this embodiment, the width of the upper housing support plane 251 refers to the difference between the inner radius and the outer radius of the upper housing support plane 251. In one embodiment, the inner radius of the upper housing support plane 251 is smaller than the radius of the upper housing assembly 210. The upper housing assembly 210 is disposed in the groove structure of the lower housing assembly 250, and the upper housing support plane 251 supports the upper housing assembly 210. In one embodiment, the inner radius of the upper housing support plane 251 is larger than the outer radius of the magnetic sheet coil 220. The magnetic sheet coil 220 is disposed in the groove structure of the lower housing assembly 250, and the magnetic sheet coil 220 can pass through the upper housing support plane 251.

[0061] like Figure 5 As shown, the recessed structure of the lower housing assembly 250 can also be provided with a coil support plane 252. The coil support plane 252 is used to support the magnetic sheet coil 220. The coil support plane 252 is located between the upper housing support plane 251 and the bottom of the recessed structure of the lower housing assembly 250. The gap between the bottom of the recessed structure of the lower housing assembly 250 and the magnetic sheet coil 220 is used to accommodate the circuit board 260.

[0062] In this embodiment, the depth of the coil support plane 252 refers to the distance between the coil support plane 252 and the upper surface of the lower housing assembly 250. The depth of the coil support plane 252 is greater than or equal to the sum of the thickness of the magnetic sheet coil 220 and the thickness of the upper housing assembly 210.

[0063] In one embodiment, the distance between the coil support plane 252 and the upper housing support plane 251 is slightly greater than the thickness of the magnetic sheet coil 220. The upper housing assembly 210 and the magnetic sheet coil 220 are disposed in the groove structure of the lower housing assembly 250, and a gap exists between the upper housing assembly 210 and the magnetic sheet coil 220. The gap between the upper housing assembly 210 and the magnetic sheet coil 220 can be filled with thermally conductive colloid, and the upper housing assembly 210, the magnetic sheet coil 220, and the coil support plane 252 can form a longitudinal limiting structure. In addition, when the upper surface of the upper housing assembly 210 is deformed by an external force, the deformation of the upper housing assembly 210 will not compress the magnetic sheet coil 220, thus avoiding damage to the magnetic sheet coil 220.

[0064] In one embodiment, the distance between the coil support plane 252 and the upper housing support plane 251 is equal to the thickness of the magnetic sheet coil 220. Accordingly, the upper housing assembly 210, the magnetic sheet coil 220 and the coil support plane 252 can form a longitudinal limiting structure.

[0065] As shown in FIG. 2, the coil support plane 252 is in the shape of a fan ring. In one embodiment, the fan angle of the coil support plane 252 is greater than or equal to 180°. Figure 6 As shown in FIG. 2, the coil support plane 252 is in the shape of a fan ring. In one embodiment, the fan angle of the coil support plane 252 is greater than or equal to 180°.

[0066] In the embodiment of the present application, the width of the coil support plane 252 refers to the difference between the inner radius and the outer radius of the coil support plane 252. The outer radius of the magnetic sheet coil 220 is greater than or equal to the inner radius of the coil support plane 252. In one embodiment, the outer radius of the coil support plane 252 is equal to the inner radius of the upper housing support plane 251. In one embodiment, the inner radius of the coil support plane 252 is greater than the outer radius of the heat dissipation ring 240, the outer radius of the heat dissipation ring 240 is not greater than the inner radius of the magnetic sheet coil 220, and the heat dissipation ring 240 can pass through the magnetic sheet coil 220 and the coil support plane 252. The magnetic sheet coil 220 is nested in the heat dissipation ring 240.

[0067] As shown in FIG. 2, the coil support plane 252 is in the shape of a fan ring. In one embodiment, the fan angle of the coil support plane 252 is greater than or equal to 180°. Figure 6 As shown in FIG. 2, the coil support plane 252 is in the shape of a fan ring. In one embodiment, the fan angle of the coil support plane 252 is greater than or equal to 180°. As shown in FIG. 2, the coil support plane 252 is in the shape of a fan ring. In one embodiment, the fan angle of the coil support plane 252 is greater than or equal to 180°. In one embodiment, the arc-shaped fence and the column-shaped fences of the fence-shaped support body have the same height, so that the coil support plane 252 is on a plane. The magnetic sheet coil 220 is arranged on the coil support plane 252, which can avoid damage caused by uneven force on the magnetic sheet coil 220.

[0068] In one embodiment, the arc-shaped fence and the column-shaped fences of the fence-shaped support body have the same height, so that the coil support plane 252 is on a plane. The magnetic sheet coil 220 is arranged on the coil support plane 252, which can avoid damage caused by uneven force on the magnetic sheet coil 220.

[0069] In one embodiment, multiple columnar fences may be equally spaced between the inner wall of the groove structure of the lower housing assembly 250 and the arc-shaped fence. In other embodiments, the multiple columnar fences may be arranged in other ways between the inner wall of the groove structure of the lower housing assembly 250 and the arc-shaped fence.

[0070] In one embodiment, multiple columnar fences are separated, and gaps are formed between the columnar fences, the arc-shaped fences, and the inner sidewalls of the groove structure of the lower housing assembly 250 for the use of thermally conductive adhesive. Accordingly, the heat generated by the magnetic coil 220 can be transferred to the lower housing assembly 250 not only through the fence-shaped support of the coil support plane 252, but also through the thermally conductive adhesive, thereby improving the heat dissipation capacity of the wireless charger 200.

[0071] The coil support plane 252 of the wireless charger 200 provided in this application embodiment is composed of a fence-shaped support, which can reduce the material used in manufacturing the lower housing assembly 250 and reduce the cost and weight of the wireless charger 200. In addition, the fence-shaped support of the coil support plane 252 can prevent watermarks from forming on the lower surface of the lower housing assembly 250, thus avoiding affecting the appearance of the wireless charger 200.

[0072] In this embodiment, the wireless charger 200 may further include a limiting magnet 230 and / or a heat dissipation ring 240. For example... Figure 5 As shown, the groove structure of the lower housing assembly 250 can also be provided with a magnet support plane 253. In this embodiment, the middle area of ​​the bottom surface of the groove structure of the lower housing assembly 250 can serve as a support plane for the limiting magnet 230 and / or the heat dissipation ring 240, hereinafter referred to as the magnet support plane 253.

[0073] In this embodiment, the depth of the magnet support plane 253 refers to the depth of the groove structure of the lower housing assembly 250. In one embodiment, the lower surface of the upper housing assembly 210 is a plane, and the depth of the magnet support plane 253 is greater than the sum of the height of the limiting magnet 230 and the thickness of the upper housing assembly 210. In another embodiment, the lower surface of the upper housing assembly 210 has a protruding structure, and the depth of the magnet support plane 253 is greater than the sum of the height of the limiting magnet 230, the thickness of the upper housing assembly 210, and the height of the protruding structure on the lower surface of the upper housing assembly 210.

[0074] In one embodiment, the lower surface of the upper housing assembly 210 is a plane, and the depth of the magnet support plane 253 is greater than the sum of the height of the heat dissipation ring 240 and the thickness of the upper housing assembly 210.

[0075] In one embodiment, the lower surface of the upper housing assembly 210 has a raised structure, and the depth of the magnet support plane 253 is greater than the sum of the height of the heat dissipation ring 240, the thickness of the upper housing assembly 210, and the height of the raised structure on the lower surface of the upper housing assembly 210.

[0076] In other embodiments, the height of the limiting magnet 230 is different from the height of the heat dissipation ring 240, and the depth of the portion supporting the limiting magnet 230 in the magnet support plane 253 may be different from the depth of the portion supporting the heat dissipation ring 240.

[0077] In this embodiment, the limiting magnet 230 has a cylindrical structure, and the magnetic sheet coil 240 has a ring structure. The magnetic sheet coil 240 is disposed on the coil support plane 252. The limiting magnet 230 is disposed on the magnet support plane 253. At least a portion of the limiting magnet 253 passes through the ring structure of the magnetic sheet coil 240.

[0078] In one embodiment, the limiting magnet 230 and the heat dissipation ring 240 are installed in the groove structure of the lower housing assembly 250, and there are gaps between the upper housing assembly 210 and the limiting magnet 230, and between the upper housing assembly 210 and the heat dissipation ring 240. When the upper surface of the upper housing assembly 210 is deformed by an external force, the deformation of the upper housing assembly 210 will not compress the limiting magnet 230 and the heat dissipation ring 240, thus avoiding damage to them. In another embodiment, the gaps between the upper housing assembly 210 and the limiting magnet 230, and between the upper housing assembly 210 and the heat dissipation ring 240, can be filled with thermally conductive colloid to improve the heat dissipation efficiency of the wireless charger 200.

[0079] like Figure 7 As shown, the magnet support plane 253 is provided with an isolation plate 254 to define the positions of the limiting magnet 230 and the heat dissipation ring 240. In one embodiment, the limiting magnet 230 is disposed on the magnet support plane 253, and the limiting magnet 230 is located inside the isolation plate 254. In another embodiment, the heat dissipation ring 240 is disposed between the side of the fence-shaped support of the coil support plane 252 and the isolation plate 254. The isolation plate 254 between the limiting magnet 230 and the heat dissipation ring 240 can prevent the heat dissipation ring 240 from absorbing heat and increasing in volume, thus preventing the compressive force generated by the heat dissipation ring 240 from damaging the limiting magnet 230.

[0080] In the embodiments of the present application, the shape of the isolation plate 254 is related to the space reserved between the limiting magnet 230 and the heat dissipation ring 240, and can be an ellipse, a polygon or other shapes, which are not limited in the present application. In an embodiment, the top view of the limiting magnet 230 is circular, the top view of the heat dissipation ring 240 is a circular ring, and the top view of the isolation plate 254 is a circular ring. The inner radius of the isolation plate 254 is greater than or equal to the radius of the limiting magnet 230, and the outer radius of the isolation plate 254 is less than or equal to the inner radius of the heat dissipation ring 240. In an embodiment, the magnet support plane 253 is provided with an annular protrusion 254 for isolating the limiting magnet 230 and the heat dissipation ring 240. In an embodiment, the magnet support plane 253 is provided with an annular isolation plate 254 for isolating the limiting magnet 230 and the heat dissipation ring 240.

[0081] As shown in Figure 4 , the magnetic sheet coil 220, the bottom of the groove structure of the lower shell assembly 250, the inner side wall of the groove structure of the lower shell assembly 250 and the heat dissipation ring 240 form a receiving cavity for receiving the circuit board 260 and the cable 270. In the present application, the top view of the receiving cavity and the top view of the coil support plane 252 form a circular ring.

[0082] The bottom of the groove structure of the lower shell assembly 250 forms part of the receiving cavity, i.e. the circuit board support plane 256. The circuit board support plane 256 is at the bottom of the groove structure of the lower shell assembly 250 and at the edge of the bottom of the groove structure of the lower shell assembly 250. The circuit board support plane 256 is used to support the circuit board 260. As shown in Figure 6 , the circuit board support plane 256 is at the bottom of the groove structure of the lower shell assembly 250 and at the edge of the magnet support plane 253. In the present application, the top view of the circuit board support plane 256 and the top view of the coil support plane 252 form a circular ring.

[0083] The inner side wall of the groove structure of the lower shell assembly 250 corresponding to the receiving cavity is provided with a through hole 255. The bottom of the groove structure of the lower shell assembly 250 corresponding to the receiving cavity is provided with a wire slot 257. The wire slot 257 is in communication with the through hole 255. The wires of the circuit board 260 pass through the wire slot 257 and the through hole 255 to connect with external circuits.

[0084] In the embodiments of the present application, the depth of the circuit board support plane 256 refers to the distance between the plane where the circuit board support plane 256 is located and the upper surface of the lower shell assembly 250. In an embodiment, the lower surface of the upper shell assembly 210 is a plane, and the depth of the circuit board support plane 256 is greater than the sum of the thickness of the upper shell assembly 210, the thickness of the magnetic sheet coil 220 and the thickness of the circuit board 260.

[0085] In one embodiment, the lower surface of the upper housing assembly 210 has a raised structure, and the depth of the circuit board support plane 256 is greater than the sum of the thickness of the upper housing assembly 210, the height of the raised structure on the lower surface of the upper housing assembly 210, the thickness of the magnetic coil 220, and the thickness of the circuit board 260.

[0086] In one embodiment, the depth of the circuit board support plane 256 may be different from the depth of the magnet support plane 253.

[0087] In one embodiment, the height difference between the circuit board support plane 256 and the coil support plane 252 is equal to or slightly greater than the thickness of the circuit board 260. After the circuit board 260 and the magnetic sheet coil 220 are respectively disposed on the circuit board support plane 256 and the coil support plane 252, there is a gap between the circuit board 260 and the magnetic sheet coil 220 to prevent the compressive force generated by the magnetic sheet coil 220 from damaging the circuit board 260.

[0088] like Figure 6 As shown, the lower housing assembly 250 is provided with a through hole 255. A cable 270 can pass through the through hole 255 into the recessed structure of the lower housing assembly 250. The cable 270 can be electrically connected to the circuit board 260, allowing the circuit board 260 to provide power to the wireless charger 200. In this application, the through hole 255 is located on the inner sidewall of the recessed structure of the lower housing assembly 250, and is situated within the portion of the inner sidewall of the recessed structure that forms the receiving cavity. In other embodiments, the through hole 255 can be circular, elliptical, or other shapes; this application does not limit its shape.

[0089] like Figure 6 As shown, the circuit board support plane 256 is provided with a wire groove 257. In this application, the through hole 255 is located at the bottom of the recessed structure of the lower housing assembly 250, and is located in the part of the recessed structure of the lower housing assembly 250 that forms a receiving cavity. The wire groove 257 is connected to the through hole 255, and the wires of the circuit board 260 are connected to the external circuit through the wire groove 257 and the through hole 255. Normally, the circuit board 260 is an independent component. The circuit board 260 is electrically connected to the cable 270, and the cable 270 is soldered to the end point on the surface of the circuit board 260, which will cause a protrusion on the surface of the circuit board 260. The circuit board 260 is disposed on the circuit board support plane 256, and the protrusion of the circuit board 260 and the cable 270 are embedded in the wire groove 257, so that the circuit board 260 is better disposed on the circuit board support plane 256.

[0090] In one embodiment, the center of the through hole 255 is in line with the center of the wire slot 257. In one embodiment, the center of the through hole 255 is not in line with the center of the wire slot 257, and the cable 270 needs to be bent to allow the circuit board 260 to be placed on the circuit board support plane 256. The cable 270 is easy to break after being bent, which reduces the reliability of the wireless charger 200. Of course, the center of the through hole 255 is not in line with the center of the wire slot 257, and the distance between the extension line of the center of the through hole 255 and the extension line of the center of the wire slot 257 can be less than a set threshold. The set threshold is the maximum range in which the cable 270 is not easy to break.

[0091] In an embodiment of the present application, the lower shell assembly 250 is provided with an upper shell support plane 251, a coil support plane 252, a magnet support plane 253, a circuit board support plane 256, etc. The upper shell support plane 251 supports the upper shell assembly 210. The coil support plane 252 supports the magnetic sheet coil 220. The magnet support plane 253 supports the limiting magnet 230 and the heat dissipation ring 240. The circuit board support plane 256 supports the circuit board 260. The multiple support planes of the wireless charger 200 support each component at different positions to avoid the components being stacked together. If the wireless charger 200 is subjected to external force, the components stacked together will be damaged, thereby reducing the reliability of the wireless charger 200.

[0092] In addition, the top view shape of the magnetic sheet coil 220 and the heat dissipation ring 240 is a circular ring, and the top view shape of the limiting magnet 230 is a circle. Under the restriction of the coil support plane 252 and the magnet support plane 253, the magnetic sheet coil 220, the limiting magnet 230 and the heat dissipation ring 240 can be nested together, improving the integration of each component and being beneficial to the miniaturization of the wireless charger 200. Correspondingly, the inner side wall of the groove structure of the lower shell assembly 250 and the heat dissipation ring 240 constitute the transverse limiting structure of the magnetic sheet coil 220, which can improve the structural stability of the wireless charger 200.

[0093] Figure 7 A structural schematic diagram of an upper shell assembly of a wireless charger provided in an embodiment of the present application. The upper shell assembly 210 is part of the shell of the wireless charger 200. In the wireless charging process, the upper surface of the upper shell assembly 210 is in contact with the lower surface of the electronic device 100. In an embodiment of the present application, the top view shape of the upper shell assembly 210 is related to the shape of the wireless charger 200. In one embodiment, the shape of the wireless charger 200 is a cylinder, and the top view shape of the upper shell assembly 210 is a circle.

[0094] As Figure 7As shown, the upper surface of the upper housing assembly 210 is flat, and the middle of the upper surface of the upper housing assembly 210 is provided with a groove structure 211. The groove structure 211 of the upper housing assembly 210 is used to support the electronic device 100 and limit the position of the electronic device 100. The bottom of the groove structure 211 of the upper housing assembly 210 is flat.

[0095] The electronic device 100 is arranged on the wireless charger 200, and the protruding structure of the lower surface of the electronic device 100 is embedded in the groove structure of the upper surface of the upper housing assembly 210. The lower surface of the electronic device 100 is in contact with the upper surface of the upper housing assembly 210, which can reduce the distance between the wireless charging coil of the electronic device 100 and the coil assembly 222 of the wireless charger 200, thereby reducing the power loss of the wireless charger. In other embodiments, the shape of the upper surface of the upper housing assembly 210 can be flat.

[0096] As shown in FIG. 2, the electronic device 100 is arranged on the wireless charger 200. The protruding structure of the lower surface of the electronic device 100 is embedded in the groove structure of the upper surface of the upper housing assembly 210. The lower surface of the electronic device 100 is in contact with the upper surface of the upper housing assembly 210. The distance between the wireless charging coil of the electronic device 100 and the coil assembly 222 of the wireless charger 200 is reduced, thereby reducing the power loss of the wireless charger. Figure 7 As shown in FIG. 2, the electronic device 100 is arranged on the wireless charger 200. The protruding structure of the lower surface of the electronic device 100 is embedded in the groove structure of the upper surface of the upper housing assembly 210. The lower surface of the electronic device 100 is in contact with the upper surface of the upper housing assembly 210. The distance between the wireless charging coil of the electronic device 100 and the coil assembly 222 of the wireless charger 200 is reduced, thereby reducing the power loss of the wireless charger.

[0097] The upper surface of the upper housing assembly 210 of the wireless charger 200 is provided with the groove structure 211, which can be coupled with the protruding structure of the electronic device 100, thereby shortening the distance between the electronic device 100 and the wireless charger 200 and reducing the power loss of the wireless charging. In addition, the upper surface of the upper housing assembly 210 is provided with the groove structure 211, which can increase the surface area of the upper surface of the wireless charger 200 and increase the contact area between the wireless charger 200 and the electronic device 100, thereby improving the heat dissipation efficiency of the wireless charger 200.

[0098] In addition, during the wireless charging process, the electronic device 100 is arranged on the upper surface of the upper housing assembly 210 of the wireless charger 200. The protruding structure of the electronic device 100 is embedded in the groove structure 211 of the upper housing assembly 210, and the protruding structure of the electronic device 100 can be in contact with the groove structure 211 of the upper housing assembly 210. The periphery of the upper surface of the upper housing assembly 210 is in contact with the lower surface of the electronic device 100. The heat of the electronic device 100 is transferred to the outer shell of the wireless charger 200, thereby increasing the heat dissipation area of the electronic device 100 and accelerating the temperature reduction of the electronic device 100.

[0099] As shown in FIG. 2, the electronic device 100 is arranged on the wireless charger 200. The protruding structure of the lower surface of the electronic device 100 is embedded in the groove structure of the upper surface of the upper housing assembly 210. The lower surface of the electronic device 100 is in contact with the upper surface of the upper housing assembly 210. The distance between the wireless charging coil of the electronic device 100 and the coil assembly 222 of the wireless charger 200 is reduced, thereby reducing the power loss of the wireless charger. Figure 7As shown, the lower surface of the upper housing assembly 210 can also be provided with a circular truncated cone shaped protruding structure 212. The lower surface of the upper housing assembly 210 refers to the surface of the upper housing assembly 210 that forms the cavity structure. In other embodiments, the protruding structure 212 of the upper housing assembly 210 can also be in the shape of a cylinder, a cuboid, or other shapes, which are not limited herein.

[0100] In one embodiment, the protruding structure 212 is disposed at the middle of the lower surface of the upper housing assembly 210. The upper housing assembly 210 and the lower housing assembly 250 form the cavity structure, and the top of the protruding structure 212 of the upper housing assembly 210 is coupled with at least one of the limiting magnet 230 and the heat dissipation ring 240.

[0101] In one embodiment, the material of the upper housing assembly is a high thermal conductivity material. The top of the protruding structure 212 of the upper housing assembly 210 is coupled with at least one of the limiting magnet 230 and the heat dissipation ring 240, and the upper housing assembly 210 conducts the heat of the electronic device 100 to the lower housing assembly 250 through the heat dissipation ring 240 and the limiting magnet 230.

[0102] In one embodiment, the protruding structure 212 of the upper housing assembly 210 is in the shape of a circular truncated cylinder. The bottom radius of the protruding structure 212 of the upper housing assembly 210 is greater than the top radius of the protruding structure 212 of the upper housing assembly 210.

[0103] In one embodiment, the top of the protruding structure 212 of the upper housing assembly 210 is in the shape of a circle in plan view. The heat dissipation ring 240 is in the shape of a circular ring in plan view. The radius of the top of the protruding structure 212 of the upper housing assembly 210 is greater than or equal to the outer radius of the heat dissipation ring 240.

[0104] In one embodiment, the bottom of the protruding structure 212 of the upper housing assembly 210 is in the shape of a circle in plan view. The magnetic sheet coil 220 is in the shape of a circular ring in plan view. The radius of the bottom of the protruding structure 212 of the upper housing assembly 210 is less than the inner radius of the magnetic sheet coil 220.

[0105] In one embodiment, the thickness of the upper housing assembly 210 is less than the difference between the depth of the groove structure of the lower housing assembly 250 and the height of the limiting magnet 230. Alternatively, the thickness of the upper housing assembly 210 is less than the difference between the depth of the groove structure of the lower housing assembly 250 and the height of the heat dissipation ring 240.

[0106] As Figure 7As shown, the lower surface of the upper housing assembly 210 is also provided with an annular groove 213. The annular groove 213 is located around the protruding structure 212 of the upper housing assembly 210, for nesting the magnetic sheet coil 220. The lower surface of the annular groove of the upper housing assembly 210 is coupled with the upper surface of the magnetic sheet coil 220. The upper surface of the magnetic sheet coil 220 is the surface of the magnetic sheet coil 220 close to the upper housing assembly 210.

[0107] In one embodiment, the top view shape of the annular groove 213 of the upper housing assembly 210 is a circular ring. The top view shape of the magnetic sheet coil 220 is a circular ring. The outer radius of the annular groove 213 of the upper housing assembly 210 is greater than the outer radius of the magnetic sheet coil 220. The inner radius of the annular groove 213 of the upper housing assembly 210 is less than the inner radius of the magnetic sheet coil 220.

[0108] In one embodiment, the inner side upper housing assembly height of the annular groove 213 of the upper housing assembly 210 is greater than the outer side upper housing assembly height of the annular groove 213 of the upper housing assembly 210.

[0109] The magnetic sheet coil 220 is used for converting electric energy into wireless power signals. The magnetic sheet coil 220 is installed on the coil support plane 252 of the lower housing assembly 250. In the wireless charging process, the magnetic sheet coil 220 converts electric energy into wireless power signals and radiates the wireless power signals in a set direction.

[0110] Figure 8 A structural schematic diagram of a magnetic sheet coil of a wireless charger provided in an embodiment of the present application is shown in FIG. 8. As shown in FIG. 8, the magnetic sheet coil 220 includes a magnetic sheet assembly 221 and a coil assembly 222. In the embodiment of the present application, the shape of the magnetic sheet assembly 221 is a circular ring-shaped column. The upper surface of the magnetic sheet assembly 221 is provided with an annular groove for receiving the coil assembly 222. The opening direction of the annular groove is directed to the upper housing assembly 210. Figure 8

[0111] As shown in FIG. 8, the top view shape of the annular groove of the magnetic sheet assembly 221 is a circular ring. The coil assembly 222 is arranged in the annular groove of the magnetic sheet assembly 221. The top view shape of the coil assembly 222 is a circular ring. In the embodiment of the present application, the top view shapes of the magnetic sheet assembly 221, the annular groove, and the coil assembly 222 are circular rings with a common center.

[0112] ​During the assembly of the magnetic sheet coil 220, the coil assembly 222 is bent into the shape of the annular groove of the magnetic sheet assembly 221. Then, the assembler sets the coil assembly 222 in the annular groove of the magnetic sheet assembly 221. Finally, the assembler adds adhesive or thermal conductive glue in the annular groove of the magnetic sheet assembly 221 to fix the coil assembly 222 in the annular groove of the magnetic sheet assembly 221. In the embodiment of the application, the coil assembly 222 is fixed in the annular groove of the magnetic sheet assembly 221, which can avoid the change of the shape and position of the coil assembly 222, resulting in the change of the position and charging power of the wireless charger 200, and reducing the stability of the wireless charger 200.

[0113] In the embodiment of the application, the magnetic sheet assembly 221 is made of a magnetic and low-conductivity material. The coil assembly 222 is set in the annular groove of the magnetic sheet assembly 221, and the magnetic sheet assembly 221 can shield the wireless power signal radiated by the coil assembly 222 to the central area, thereby avoiding the generation of eddy current by the limiting magnet 240 arranged in the middle of the annular structure of the magnetic sheet coil 220, which can not only improve the power conversion rate of the wireless charger 200, but also slow down the temperature rise speed inside the wireless charger 200.

[0114] In one embodiment, the inner radius of the magnetic sheet assembly 221 is greater than or equal to the outer radius of the heat dissipation ring 240, so that the heat dissipation ring 240 can be installed on the magnet support plane 253 through the magnetic sheet assembly 221.

[0115] In one embodiment, the inner radius of the magnetic sheet assembly 221 is greater than or equal to the radius of the protruding structure 213 of the upper shell assembly 210, so that the protruding structure 213 of the upper shell assembly 210 can be in contact with the limiting magnet 230 and the heat dissipation ring 240.

[0116] In one embodiment, the outer radius of the magnetic sheet assembly 221 is less than or equal to the outer radius of the coil support plane 252 of the lower shell assembly 250, so that the magnetic sheet assembly 221 can be set in the coil support plane 252 of the lower shell assembly 250.

[0117] In one embodiment, the thickness of the magnetic sheet assembly 221 is less than or equal to the distance between the upper shell support plane 251 and the coil support plane 252 of the lower shell assembly 250, so that the magnetic sheet assembly 221 is set in the coil support plane 252 of the lower shell assembly 250, avoiding affecting the fixation of the upper shell assembly 210 on the upper shell support plane 251 of the lower shell assembly 250.

[0118] In this embodiment, the top-view cross-sectional area of ​​the opening of the annular groove of the magnetic sheet assembly 221 is smaller than the top-view cross-sectional area of ​​the bottom of the annular groove of the magnetic sheet assembly 221. Alternatively, the top-view cross-sectional area of ​​the opening of the annular groove of the magnetic sheet assembly 221 is smaller than the top-view cross-sectional area at any position between the opening of the annular groove of the magnetic sheet assembly 221 and the bottom of the annular groove of the magnetic sheet assembly 221.

[0119] like Figure 9 As shown, the outer and inner wall surfaces of the annular groove of the magnetic sheet assembly 221 are inclined, making the annular groove of the magnetic sheet assembly 221 a truncated ring with a small opening and a large bottom. The coil assembly 222 is disposed in the annular groove of the magnetic sheet assembly 221, and the magnetic conductive material is wrapped around the coil assembly 222 as much as possible. The magnetic sheet coil 220 is installed in the wireless charger 200, and the opening of the annular groove of the magnetic sheet assembly 221 faces the upper housing assembly 210. When the wireless charger 200 performs wireless charging, the wireless power signal generated by the coil assembly 222 will only radiate the wireless power signal in the direction of the electronic device 100, thereby improving the power conversion efficiency of the wireless charger 200.

[0120] In other embodiments, the annular groove of the magnetic sheet assembly 221 can be a circular cylinder or other shapes. When the annular groove of the magnetic sheet assembly 221 is a circular cylinder, the outer wall surface of the annular groove is parallel to the outer wall surface of the magnetic sheet assembly 221, and the inner wall surface of the annular groove is parallel to the inner wall surface of the magnetic sheet assembly 221.

[0121] For example, electronic device 100 is an electronic watch. The middle region of the charging coil of electronic device 100 typically houses components such as a heart rate detection module and a temperature detection module. When electronic device 100 is wirelessly charged, these components are located in the middle region of the coil assembly 222 of the wireless charger 200. In the wireless charger 200 provided in this embodiment, the annular groove of the magnetic coil 220 can wrap around the coil assembly 22, limiting the direction of the wireless power signal radiated by the coil assembly 222 and preventing the vortices generated by the coil assembly 222 from affecting the heart rate detection module, temperature detection module, and other components of electronic device 100.

[0122] like Figure 8As shown, the annular groove of the magnetic sheet assembly 221 has a circular ring shape in top view. In one embodiment, the ratio between the outer radius and the inner radius of the annular groove of the magnetic sheet assembly 221 is greater than 1.9. In one embodiment, the ratio between the outer radius and the inner radius of the annular groove of the magnetic sheet assembly 221 is greater than 1.7. The smaller the ratio between the inner radius and the outer radius of the annular groove of the magnetic sheet assembly 221 in the wireless charger 200 provided by the embodiments of the present application, the greater the width of the annular groove of the magnetic sheet assembly 221 in top view, and the greater the area of the coil assembly 222 received in the annular groove of the magnetic sheet assembly 221 in top view, which can increase the wireless charging area of the wireless charger 200. The greater the width of the annular groove of the magnetic sheet assembly 221, the greater the number of turns of the coil assembly 222 received in the annular groove of the magnetic sheet assembly 221, which can improve the power of the wireless charging of the wireless charger 200. The greater the depth of the annular groove of the magnetic sheet assembly 221, the greater the number of turns of the coil assembly 222 received in the annular groove of the magnetic sheet assembly 221, which can increase the charging power of the wireless charger 200.

[0123] In one embodiment, the lower surface of the upper housing assembly 210 is flat, and the height of the magnetic sheet assembly 221 on both sides of the annular groove of the magnetic sheet assembly 221 can be the same. The direction of the wireless power signal radiated outward by the magnetic sheet coil 220 is the upward direction perpendicular to the upper surface of the magnetic sheet coil 220.

[0124] In one embodiment, the lower surface of the upper housing assembly 210 has a protruding structure 212, and the height of the magnetic sheet assembly 221 on both sides of the annular groove of the magnetic sheet assembly 221 can be different. The height of the magnetic sheet assembly 221 inside the annular groove of the magnetic sheet assembly 221 is lower than the height of the magnetic sheet assembly 221 outside the annular groove of the magnetic sheet assembly 221. In other embodiments, the lower surface of the upper housing assembly 210 is provided with an annular groove 213. The annular groove 213 of the lower surface of the upper housing assembly 210 is around the protruding structure 212. In the assembly process, when the upper housing assembly 210 is installed on the upper housing support plane 251, the magnetic sheet assembly 221 is embedded in the annular groove 213 of the lower surface of the upper housing assembly 210. In this embodiment, the annular groove 213 is provided on the lower surface of the upper housing assembly 210, which can increase the depth of the annular groove of the magnetic sheet assembly 221, thereby improving the charging power of the wireless charger 200.

[0125] As Figure 8As shown, the magnetic sheet assembly 221 is provided with a plurality of openings. For example, the magnetic sheet assembly 221 is provided with an opening 2211 and an opening 2212. The opening 2211 is used to define the orientation of the magnetic sheet coil 220 mounted on the coil support plane 252. In the embodiment of the present application, the magnetic sheet assembly 221 is in the shape of a circular ring column, and the opening 2211 is on the outer side of the magnetic sheet assembly 221. Correspondingly, the outer edge of the coil support plane 252 is provided with a protrusion. The shape of the protrusion of the coil support plane 252 matches the shape of the opening 2211 of the magnetic sheet assembly 221. The magnetic sheet coil 220 is mounted on the coil support plane 252, and the opening 2211 of the magnetic sheet assembly 221 is coupled with the protrusion of the coil support plane 252. The opening 2211 of the magnetic sheet assembly 221 can limit the orientation of the magnetic sheet coil 220 mounted on the coil support plane 252, and avoid the rotation of the magnetic sheet coil 220 in the wireless charger 2000. In other embodiments, the positioning portion 2211 provided on the magnetic sheet assembly 221 can also be other structures, such as a protrusion structure, a buckle, etc.

[0126] The opening 2212 is on the outer side of the magnetic sheet assembly 221. The circuit board 260 is generally on the bottom of the magnetic sheet assembly 221, so as to avoid the generation of eddy current on the circuit board 260 by the coil assembly 222. The two ends of the coil assembly 222 pass through the wire slot 2212, and are welded to the ports of the circuit board 260 by solder. In other embodiments, the opening 2212 is on the inner side of the magnetic sheet assembly 221. The opening 2211 and the opening 2212 can be the same opening.

[0127] In the embodiment of the present application, the magnetic sheet assembly 221 of the magnetic sheet coil 220 can replace the limiting magnet 230. In one embodiment, the N pole of the limiting magnet of the electronic device 100 faces upward, and the S pole faces downward. After the magnetic sheet assembly 221 is magnetized, the N pole of the magnetic sheet assembly 221 faces upward, and the S pole faces downward. In one embodiment, the S pole of the limiting magnet of the electronic device 100 faces upward, and the N pole faces downward. After the magnetic sheet assembly 221 is magnetized, the S pole of the magnetic sheet assembly 221 faces upward, and the N pole faces downward. The electronic device 100 is arranged on the upper housing assembly 210 of the wireless charger 200, and the electronic device 100 is adhered to the set position of the upper housing assembly 210 of the wireless charger 200 through the limitation of the limiting magnets of the electronic device 100 and the wireless charger 200.

[0128] Figure 10 A structural schematic diagram of an electronic device 100 and a wireless charger 200 thereof is provided in the embodiment of the present application. The electronic device 100 can be a watch, a mobile phone, a headset, a tablet computer, a computer, etc. The charger 200 can be a portable wireless charger, a vehicle-mounted wireless charger, etc. In order to describe the charging coil and the limiting magnet of the electronic device 100 or the charger 200, Figure 10The other circuits or structures of the electronic device 100 and the wireless charger 200 are omitted.

[0129] As shown in Figure 10 , the electronic device 100 includes a wireless charging coil 110 and a limiting magnet 120. The wireless charger 200 includes a magnetic sheet coil 220. The magnetic sheet coil 220 includes a magnetic sheet assembly 221 and a coil assembly 222. The coil assembly 222 is arranged in the annular groove of the magnetic sheet assembly 221. The opening of the annular groove of the magnetic sheet assembly 221 faces upward.

[0130] As shown in Figure 10 , the wireless charger 200 is horizontally arranged on the desktop, and the electronic device 100 is stacked on the wireless charger 200. The limiting magnet 120 of the electronic device 100 matches the magnetic sheet assembly 221 of the wireless charger 200, which limits the electronic device 100 to a set position on the upper surface of the wireless charger 200. The charging coil 110 of the electronic device 100 and the coil assembly 222 of the wireless charger 200 match to realize wireless charging.

[0131] Figure 11 A structure diagram of a limiting magnet of a wireless charger provided in an embodiment of the present application. The limiting magnet 230 of the wireless charger provided in the embodiment of the present application can be composed of a single magnet, such as a cylindrical magnet, a circular ring-shaped cylindrical magnet, etc. The limiting magnet 230 can be composed of multiple magnets, such as a cylindrical magnet and multiple circular ring-shaped cylindrical magnets spliced into a cylindrical magnet.

[0132] As shown in Figure 11 , the limiting magnet 230 includes a first magnet 231 and a second magnet 232. The first magnet 231 and the second magnet 232 are arranged adjacent to each other on the same surface. Among them, the first magnet 231 is a cylindrical structure, and the shape of the top view cross section of the first magnet 231 is a circle. The second magnet 232 is a circular ring-shaped cylindrical structure, and the shape of the top view cross section of the second magnet 232 is a circular ring. The inner side radial dimension of the second magnet 232 is greater than or equal to the radial dimension of the first magnet 231. The first magnet 231 is arranged on the inner side of the second magnet 232.

[0133] In this embodiment, the N pole of the first magnet 231 faces upward and the S pole faces downward. The N pole of the second magnet 232 faces the inner side of the ring, and the S pole faces the outer side of the ring. The magnetic fields of the first magnet 231 and the second magnet 232 reinforce each other on the upper side of the limiting magnet 230, enhancing the magnetic attraction between the upper side of the wireless charger 200 and the lower side of the electronic device 100. This better defines the contact position between the electronic device 100 and the wireless charger 200, facilitating the matching of the charging coil of the electronic device 100 and the charging coil of the wireless charger 200, thereby improving the convenience of wireless charging. The magnetic fields of the first magnet 231 and the second magnet 232 weaken each other on the lower side of the limiting magnet 230, reducing the magnetic field strength on the lower side of the limiting magnet 230. This not only reduces the influence of the limiting magnet 230 on other magnetically sensitive devices in the wireless charger 200, but also eliminates or reduces the use of soft magnetic materials, which is beneficial for the heat dissipation and miniaturization of the wireless charger 200.

[0134] like Figure 12 As shown, the second magnet 232 includes multiple permanent magnet modules, which are spliced ​​together to form a ring-shaped cylindrical structure. In this embodiment, the top view cross-section of the multiple permanent magnet modules in the second magnet 232 is arc-shaped. The permanent magnet modules can be sector magnets with an angle of 360° / M. M is the number of permanent magnet modules spliced ​​together to form a ring-shaped permanent magnet, and is greater than or equal to 2. In some embodiments, the top view cross-section of the permanent magnet modules can also be a polygon such as a triangle or quadrilateral. Depending on the internal space of the charger 200, the limiting magnet 230 can select permanent magnet modules of various shapes, thereby improving the applicability of the limiting magnet 230.

[0135] In some embodiments, the first magnet 231 of the limiting magnet 230 may include multiple permanent magnet modules, which are assembled to form a cylindrical structure. In some embodiments, the second magnet 232 of the limiting magnet 230 may include only one annular cylindrical permanent magnet module. In some embodiments, the first magnet 231 and the second magnet 232 of the limiting magnet 230 each include multiple permanent magnet modules. That is, the multiple permanent magnets in the limiting magnet 230 may each include one or more permanent magnet modules.

[0136] In one embodiment, the magnetic field direction inside the first magnet 231 is perpendicular to the surface, and the magnetic field direction inside the second magnet 232 is parallel to the surface. The magnetic field direction inside the first magnet 231 is perpendicular to the magnetic field direction inside the second magnet 232.

[0137] In one embodiment, the magnetic field direction inside the first magnet 231 is parallel to the surface, and the magnetic field direction inside the second magnet 232 is perpendicular to the surface. The magnetic field direction inside the first magnet 231 is perpendicular to the magnetic field direction inside the second magnet 232.

[0138] In one embodiment, the top-view cross-sectional shape of the first magnet 231 is either circular or polygonal, and the top-view cross-sectional shape of the second magnet 232 is annular. The annular shape includes circular rings and polygonal rings.

[0139] In one embodiment, the first magnet 231 and the second magnet 232 are fixedly connected.

[0140] In one embodiment, the first magnet 231 and the second magnet 232 are respectively fixed to the surface.

[0141] Figure 13 This is a schematic diagram of the structure of a limiting magnet provided in an embodiment of this application. Figure 13 As shown, the limiting magnet 230 includes a first component 231 and a second component 232. The first component 231 and the second component 232 are disposed on the same surface along a first direction. That is, the first component 231 and the second component 232 are disposed on the same surface along a horizontal direction. The first component 231 has a ring-shaped cross-section in plan view, and the second component 232 has a cylindrical structure. The inner radial dimension of the first component 231 is greater than or equal to the radial dimension of the second component 232. The second component 232 is disposed inside the first component 231. In one embodiment, the first component 231 and the second component 232 can be fixedly connected to form an integral structure. In other embodiments, the first component 231 and the second component 232 can be fixed to the same surface respectively, and there can be a gap or filling material between the first component 231 and the second component 232.

[0142] The first component 231 includes a first magnet 231-1 and a second magnet 231-2. The second component 232 includes a second component 232. The first magnet 231-1 and the second magnet 231-2 are stacked along a second direction. That is, the first magnet 231-1 and the second magnet 231-2 are stacked perpendicular to the surface. The top-view cross-section of both the first magnet 231-1 and the second magnet 231-2 is annular. In one embodiment, the first magnet 231-1 and the second magnet 231-2 can be fixedly connected to form an integral structure. In other embodiments, the first magnet 231-1 and the second magnet 231-2 can be fixed to the side of the second component 232 respectively, and there can be gaps or filling material between the first magnet 231-1 and the second magnet 231-2.

[0143] In the embodiment, the S-pole of the first magnet 231-1 faces the inner side of the ring, and the N-pole faces the outer side of the ring. The N-pole of the second magnet 231-2 faces the inner side of the ring, and the S-pole faces the outer side of the ring. The S-pole of the second component 232 faces upward, and the N-pole faces downward. The S-pole of the first magnet 231-1 and the S-pole of the second component 232 mutually strengthen on the upper side of the magnetic attraction device 500, thereby realizing the strengthening of the magnetic field intensity on the upper side of the magnetic attraction device 500.

[0144] In an embodiment, the number of magnets in the first component 231 can be two or more. The number of magnets in the second component 232 can be two or more.

[0145] In an embodiment, the direction of the magnetic field inside the magnet of the first component 231 is perpendicular to the surface, and the direction of the magnetic field inside the magnet of the second component 232 is parallel to the surface. The direction of the magnetic field inside the magnet of the first component 231 is perpendicular to the direction of the magnetic field inside the magnet of the second component 232.

[0146] In an embodiment, the direction of the magnetic field inside the magnet of the first component 231 is parallel to the surface, and the direction of the magnetic field inside the magnet of the second component 232 is perpendicular to the surface. The direction of the magnetic field inside the magnet of the first component 231 is perpendicular to the direction of the magnetic field inside the magnet of the second component 232.

[0147] In an embodiment, the top view cross-sectional shape of the magnet of the first component 231 is one of a circle and a polygon, and the top view cross-sectional shape of the magnet of the second component 232 is a ring shape. The ring shape includes a circular ring shape and a polygonal ring shape.

[0148] In an embodiment, the magnet in the first component 231 and the magnet in the second component 232 are fixedly connected.

[0149] In an embodiment, the magnet in the first component 231 and the magnet in the second component 232 are respectively fixed to the surface.

[0150] In an embodiment, the magnet in the first component 231 is spliced by one or more sub-magnet modules. The magnet in the second component 232 is spliced by one or more sub-magnet modules.

[0151] The positional relationship between the magnetic sheet coil 220, the limiting magnet 230, and the heat dissipation ring 240 in the wireless charger 200 provided in the embodiment is not limited to Figure 3 the positional relationship shown in the figure. For example, Figures 14-16 FIG. 1 shows a positional relationship between a magnetic sheet coil, a limiting magnet, and a heat dissipation ring of a wireless charger provided in the embodiment.

[0152] For example, Figure 14As shown, the wireless charger 200 includes a magnetic coil 220, a limiting magnet 230, and a heat dissipation ring 240. The magnetic coil 220 has a ring-shaped top view. The limiting magnet 230 has a ring-shaped top view. The heat dissipation ring 240 has a circular or ring-shaped top view. In this case, the outer radius of the magnetic coil 220 is less than or equal to the inner radius of the coil support plane 252 of the lower housing assembly 250. The outer radius of the limiting magnet 230 is less than or equal to the inner radius of the magnetic coil 220. The inner radius of the limiting magnet 230 is greater than or equal to the outer radius of the magnetic coil 220. The height of the limiting magnet 230 is the same as the height of the heat dissipation ring 240, or the height of the limiting magnet 230 is different from the height of the heat dissipation ring 240.

[0153] A magnetic sheet coil 220 is disposed on the coil support plane 252 of the lower housing assembly 250. A heat dissipation ring 240 is embedded in the annular structure of the magnetic sheet coil 220 and fixed to the magnet support plane 253 of the lower housing assembly 250. A limiting magnet 230 is embedded in the heat dissipation ring 240 and fixed to the magnet support plane 253 of the lower housing assembly 250. Accordingly, the heat dissipation ring 240 is nested between the limiting magnet 230 and the magnetic sheet coil 220. In one embodiment, the gap between the heat dissipation ring 240, the limiting magnet 230, and the magnetic sheet coil 220 can be filled with thermally conductive adhesive to improve the heat dissipation efficiency of the wireless charger 200.

[0154] like Figure 15 As shown, the wireless charger 200 includes a magnetic sheet coil 220, a limiting magnet 230, and a heat dissipation ring 240. The magnetic sheet coil 220 has a ring-shaped top view. The limiting magnet 230 has a ring-shaped top view. The heat dissipation ring 240 has a circular or ring-shaped top view. In this configuration, the outer radius of the magnetic sheet coil 220 is less than or equal to the inner radius of the coil support plane 252 of the lower housing assembly 250. The outer radius of the limiting magnet 230 is less than or equal to the inner radius of the magnetic sheet coil 220. The inner radius of the limiting magnet 230 is greater than or equal to the outer radius of the heat dissipation ring 240. The height of the magnetic sheet coil 220 is the same as the height of the limiting magnet 230.

[0155] During the assembly of the wireless charger 200, the magnetic sheet coil 220 is disposed on the coil support plane 252 of the lower housing assembly 250. The limiting magnet 230 is embedded in the magnetic sheet coil 220 and fixed to the coil support plane 252 of the lower housing assembly 250. The heat dissipation ring 240 is embedded in the limiting magnet 230 and fixed to the magnet support plane 253 of the lower housing assembly 250.

[0156] like Figure 16As shown, the wireless charger 200 includes a magnetic sheet coil 220, a limiting magnet 230, and a heat dissipation ring 240. The magnetic sheet coil 220 has a ring-shaped top view. The limiting magnet 230 has a ring-shaped top view. The heat dissipation ring 240 has a circular or ring-shaped top view. In this case, the outer radius of the limiting magnet 230 is less than or equal to the inner radius of the coil support plane 252 of the lower housing assembly 250. The outer radius of the magnetic sheet coil 220 is less than or equal to the inner radius of the limiting magnet 230. The inner radius of the magnetic sheet coil 220 is greater than or equal to the outer radius of the heat dissipation ring 240. The height of the magnetic sheet coil 220 is the same as the height of the limiting magnet 230.

[0157] During the assembly of the wireless charger 200, the limiting magnet 230 is fixed to the coil support plane 252 of the lower housing assembly 250. The magnetic sheet coil 220 is embedded in the limiting magnet 230 and fixed to the coil support plane 252 of the lower housing assembly 250. The heat dissipation ring 240 is embedded in the magnetic sheet coil 220 and fixed to the magnet support plane 253 of the lower housing assembly 250.

[0158] The circuit board 260 of the wireless charger 200 provided in this embodiment may include an AC / DC converter, a protection circuit, and other circuits. The AC / DC converter converts AC power to DC power or vice versa. The protection circuit keeps the wireless charger 200 in an open-circuit state when a short circuit occurs. In this embodiment, the input terminal of the circuit board 260 is electrically connected to the cable 270, and the output terminal of the circuit board 260 is electrically connected to the coil assembly 222 of the magnetic coil 220. In this embodiment, the circuit board 260 may also be referred to as a printed circuit board assembly (PCBA).

[0159] like Figure 4 As shown, the circuit board 260 is disposed in the receiving cavity of the lower housing assembly 250. In this embodiment, the distance between the plane containing the circuit board support plane 256 and the plane containing the coil support plane 253 is greater than the thickness of the circuit board 260.

[0160] In one embodiment, a magnetic sheet coil 220 is disposed on a coil support plane 252 of the lower housing assembly 250, and a circuit board 260 is disposed on a circuit board support plane 256 of the lower housing assembly 250. A gap exists between the upper surface of the circuit board 260 and the lower surface of the magnetic sheet coil 220. When the upper surface of the magnetic sheet coil 220 is deformed by an external force, the deformation of the magnetic sheet coil 220 will not compress the circuit board 260, thus avoiding damage to the circuit board 260.

[0161] In one embodiment, the magnetic sheet coil 220 is disposed on the coil support plane 252 of the lower housing assembly 250, and the circuit board 260 is fixed to the lower surface of the magnetic sheet coil 220 by an adhesive, thereby improving the stability of the circuit board 260.

[0162] Figure 17 Fig. 1 is a schematic diagram of a wireless charger according to an embodiment of the present application. The wireless charger 200 includes a limiting magnet 230 and a shielding assembly 280. The limiting magnet 230 is a cylindrical structure. The shielding assembly 280 is a hollow cylindrical structure. The shielding assembly 280 is in contact with the limiting magnet 230.

[0163] The shape of the shielding assembly 280 is related to the shape of the limiting magnet 230. In one embodiment, the limiting magnet 230 is a cylindrical structure, and the shielding assembly 280 is a hollow cylindrical structure, a circular ring-shaped column, or the like. In one embodiment, the limiting magnet 230 is a circular truncated cone-shaped column, and the shielding assembly 280 is a hollow circular truncated cone-shaped column, a circular truncated cone-shaped ring-shaped column, or the like. The shape of the shielding assembly 280 can also be other shapes.

[0164] The shape of the shielding assembly 280 is related to the shielding manner. Taking the limiting magnet 230 as an example, the limiting magnet 230 is a cylindrical structure. The shielding assembly 280 shields all surfaces of the limiting magnet 230, and the shielding assembly 280 is a hollow cylindrical structure. The shielding assembly 280 shields the side surface of the limiting magnet 230, and the shielding assembly 280 is a circular ring-shaped column. The shape of the shielding assembly 280 can also be other shapes.

[0165] In the embodiment of the present application, the limiting magnet 230 is a column structure, the heat dissipation ring 240 is a ring structure, and the shielding assembly 280 disposed on the outer surface around the limiting magnet 230 is in contact with the inner surface of the heat dissipation ring 240. In one embodiment, the limiting magnet 230 is a cylindrical structure, the heat dissipation ring 240 is a circular ring structure, and the shielding assembly 280 disposed on the side surface of the limiting magnet 230 is in contact with the inner surface of the heat dissipation ring 240.

[0166] In one embodiment, the shielding assembly 280 is disposed in the middle of the heat dissipation ring 240, and the shielding assembly 280 and the heat dissipation ring 240 are fixed by an adhesive, thereby improving the stability of the wireless charger 200. In one embodiment, the shielding assembly 280 is disposed in the middle of the heat dissipation ring 240, and a heat-conducting adhesive fills the gap between the heat dissipation ring 240 and the shielding assembly 280, thereby improving the heat transfer efficiency between the various devices of the wireless charger 200.

[0167] As shown in FIG. 2, the shielding assembly 280 of the wireless charger 200 is disposed on the outer surface around the perimeter of the limiting magnet 230. In the embodiment of the present application, the limiting magnet 230 is in the shape of a cylinder, and the shielding assembly 280 is disposed on the side surface of the limiting magnet 230. The shielding assembly 280 can prevent the wireless power signal from being reflected to the limiting magnet 230, block the wireless power signal generated by the coil assembly 222 from forming a vortex on the limiting magnet 230, and avoid the temperature rise inside the wireless charger 200. Figure 17 In one embodiment, the shielding assembly 280 is also disposed on at least a portion of the upper surface of the limiting magnet 230. In one embodiment, the shielding assembly 280 is also disposed on at least a portion of the lower surface of the limiting magnet 230. In one embodiment, the shielding assembly 280 is also disposed on at least a portion of the upper surface and at least a portion of the lower surface of the limiting magnet 230. The upper surface of the limiting magnet 230 is the surface of the limiting magnet 230 close to the upper housing assembly 210. The lower surface of the limiting magnet 230 is the surface of the limiting magnet 230 close to the bottom of the recess structure of the lower housing assembly 250.

[0168] In one embodiment, the shielding assembly 280 is also disposed on at least a portion of the upper surface of the heat dissipation ring 240. In one embodiment, the shielding assembly 280 is also disposed on at least a portion of the lower surface of the heat dissipation ring 240. In one embodiment, the shielding assembly 280 is also disposed on at least a portion of the upper surface and at least a portion of the lower surface of the heat dissipation ring 240. The upper surface of the heat dissipation ring 240 is the surface of the heat dissipation ring 240 close to the upper housing assembly 210. The lower surface of the heat dissipation ring 240 is the surface of the heat dissipation ring 240 close to the bottom of the recess structure of the lower housing assembly 250.

[0169] In one embodiment, the shielding assembly 280 disposed on the upper surface of the limiting magnet 230 is in contact with the lower surface of the upper housing assembly 210. In one embodiment, the shielding assembly 280 disposed on the upper surface of the heat dissipation ring 240 is in contact with the lower surface of the upper housing assembly 210.

[0170] In one embodiment, the shielding assembly 280 disposed on the lower surface of the limiting magnet 230 is in contact with the bottom of the recess structure of the lower housing assembly 250. In one embodiment, the shielding assembly 280 disposed on the lower surface of the heat dissipation ring 240 is in contact with the bottom of the recess structure of the lower housing assembly 250.

[0171] In one embodiment, the shielding assembly 280 disposed on the lower surface of the limiting magnet 230 is in contact with the bottom of the recess structure of the lower housing assembly 250. In one embodiment, the shielding assembly 280 disposed on the lower surface of the heat dissipation ring 240 is in contact with the bottom of the recess structure of the lower housing assembly 250.

[0172] In one embodiment, the shielding assembly 280 disposed on the upper surface of the limiting magnet 230 is in the same plane as the shielding assembly 280 disposed on the upper surface of the heat sink ring 240. In one embodiment, the shielding assembly 280 disposed on the lower surface of the limiting magnet 230 is in the same plane as the shielding assembly 280 disposed on the lower surface of the heat sink ring 240.

[0173] As shown in Figure 18 (a), the shielding assembly 280 is installed between the heat sink ring 240 and the limiting magnet 230. The shielding assembly 280 is in the shape of a circular column, and the top view of the outer extension edge is a circular ring. The upper end of the shielding assembly 280 is provided with an outer extension edge, and the outer radius of the outer extension edge is less than or equal to the inner radius of the magnetic sheet coil 220. The outer extension edge of the shielding assembly 280 is disposed on the upper surface of the heat sink ring 240, which facilitates the installation of the shielding assembly 280 by the assembler. The outer extension edge of the shielding assembly 280 can be in contact with the magnetic sheet coil 220, so as to form a heat conduction loop between the magnetic sheet coil 220 and the limiting magnet 230, thereby improving the heat transfer efficiency between the various devices in the wireless charger 200. The gap between the heat sink ring 240 and the shielding assembly 280 can be filled with a heat-conducting adhesive, thereby improving the heat transfer efficiency between the various devices in the wireless charger 200.

[0174] Figure 18 (b) and Figure 18 (a) are the same and will not be repeated. As shown in Figure 18 (b), the gap between the limiting magnet 230 and the magnet support plane 253 of the lower shell assembly 250 can also be filled with a heat-conducting adhesive, thereby improving the heat transfer efficiency between the limiting magnet 230, the heat sink ring 240, and the lower shell assembly 250 in the wireless charger 200.

[0175] Figure 18 (c) and Figure 18 (a) are the same and will not be repeated. As shown in Figure 18 (c), the shielding assembly 280 is also disposed on a portion of the upper surface of the limiting magnet 230, which facilitates the installation of the shielding assembly 280 by the assembler.

[0176] Figure 18 (d) and Figure 18 (c) are the same and will not be repeated. As shown in Figure 18 (d), the gap between the limiting magnet 230 and the magnet support plane 253 of the lower shell assembly 250 can also be filled with a heat-conducting adhesive, thereby improving the heat transfer efficiency between the limiting magnet 230, the heat sink ring 240, and the lower shell assembly 250 in the wireless charger 200.

[0177] Figure 18 (e) and Figure 18 (c) are the same and will not be repeated. As shown in Figure 18As shown in (e), the outer edge of the shielding component 280 can also be disposed on the entire upper surface of the heat dissipation ring 240. Correspondingly, the side surface of the shielding component 280 can be an annular cylinder, and the top surface has a circular shape when viewed from above.

[0178] Figure 18 (f) and Figure 18 (e) The same parts will not be repeated. For example Figure 18 As shown in (f), the gap between the limiting magnet 230 and the magnet support plane 253 of the lower housing assembly 250 can also be filled with thermally conductive colloid to improve the heat transfer efficiency between the limiting magnet 230, the heat dissipation ring 240 and the lower housing assembly 250 in the wireless charger 200.

[0179] Figure 18 (g) and Figure 18 (a) The same parts will not be repeated. For example... Figure 18 As shown in (g), the shielding component 280 is also disposed on a portion of the lower surface of the limiting magnet 230. The shielding component 280 does not completely cover the lower surface of the limiting magnet 230, thus preventing the shielding component 280 from blocking the downward heat transfer of the limiting magnet 230.

[0180] Figure 18 (h) and Figure 18 (g) The same parts will not be repeated. For example Figure 18 As shown in (h), the gap between the shielding component 280, the limiting magnet 230, and the magnet support plane 253 of the lower housing component 250, which are disposed on the lower surface of the limiting magnet 230, can also be filled with thermally conductive colloid to improve the heat transfer efficiency between the limiting magnet 230, the shielding component 280, and the lower housing component 250 in the wireless charger 200.

[0181] Figure 18 (i) with Figure 18 (g) The same parts will not be repeated. For example Figure 18 As shown in (i), the shielding component 280 is also disposed on a portion of the upper surface of the limiting magnet 230 to facilitate the installation of the shielding component 280 by the assembly personnel.

[0182] Figure 18 (j) and Figure 18 (i) The same parts will not be repeated. For example Figure 18 As shown in (j), the gap between the shielding component 280, the limiting magnet 230, and the magnet support plane 253 of the lower housing component 250, which are disposed on the lower surface of the limiting magnet 230, can also be filled with thermally conductive colloid to improve the heat transfer efficiency between the limiting magnet 230, the shielding component 280, and the lower housing component 250 in the wireless charger 200.

[0183] Figure 18 (k) and Figure 18(i) The same parts are not repeated. As shown in Figure 18 (k) As shown in FIG. 28, the shielding assembly 280 is also disposed on the entire upper surface of the limit magnet 230 to avoid the wireless power signal radiated by the coil assembly 222 from being reflected to the upper surface of the limit magnet 230.

[0184] Figure 18 (l) The same parts are not repeated. As shown in Figure 18 (k) The same parts are not repeated. As shown in Figure 18 (l) As shown in FIG. 29, the gap between the shielding assembly 280 disposed on the lower surface of the limit magnet 230, the limit magnet 230, and the magnet support plane 253 of the lower housing assembly 250 can also be filled with a heat-conducting adhesive to improve the heat transfer efficiency between the limit magnet 230, the shielding assembly 280, and the lower housing assembly 250 in the wireless charger 200.

[0185] Figure 18 (m) The same parts are not repeated. As shown in Figure 18 (a) The same parts are not repeated. As shown in Figure 18 (m) As shown in FIG. 30, the shielding assembly 280 is also disposed on the entire lower surface of the limit magnet 230 to avoid the wireless power signal radiated by the coil assembly 222 from being reflected to the lower surface of the limit magnet 230. In an embodiment, the gap between the shielding assembly 280 disposed on the lower surface of the limit magnet 230 and the limit magnet 230 can also be filled with a heat-conducting adhesive to improve the heat transfer efficiency between the limit magnet 230 and the shielding assembly 280 in the wireless charger 200.

[0186] Figure 18 (n) The same parts are not repeated. As shown in Figure 18 (m) The same parts are not repeated. As shown in Figure 18 (n) As shown in FIG. 31, the gap between the shielding assembly 280 disposed on the lower surface of the limit magnet 230 and the magnet support plane 253 of the lower housing assembly 250 can also be filled with a heat-conducting adhesive to improve the heat transfer efficiency between the limit magnet 230, the shielding assembly 280, and the lower housing assembly 250 in the wireless charger 200.

[0187] Figure 18 (o) The same parts are not repeated. As shown in Figure 18 (m) The same parts are not repeated. As shown in Figure 18 (o) As shown in FIG. 32, the shielding assembly 280 is also disposed on a portion of the upper surface of the limit magnet 230 to avoid the wireless power signal radiated by the coil assembly 222 from being reflected to the upper surface of the limit magnet 230.

[0188] Figure 18 (p) The same parts are not repeated. As shown in Figure 18 (o) The same parts are not repeated. As shown in Figure 18As shown in (p), the gap between the shielding assembly 280 arranged on the lower surface of the limiting magnet 230 and the magnet support plane 253 of the lower housing assembly 250 can also be filled with a heat-conducting adhesive to improve the heat transfer efficiency between the limiting magnet 230, the shielding assembly 280 and the lower housing assembly 250 in the wireless charger 200.

[0189] Figure 18 As shown in (q), the shielding assembly 280 is also arranged on the entire upper surface of the limiting magnet 230 to prevent the wireless power signals radiated by the coil assembly 222 from being reflected to the upper surface of the limiting magnet 230. Figure 18 Figure 18 As shown in (q), the shielding assembly 280 is also arranged on the entire upper surface of the limiting magnet 230 to prevent the wireless power signals radiated by the coil assembly 222 from being reflected to the upper surface of the limiting magnet 230.

[0190] Figure 18 As shown in (r), the gap between the shielding assembly 280 arranged on the lower surface of the limiting magnet 230 and the magnet support plane 253 of the lower housing assembly 250 can also be filled with a heat-conducting adhesive to improve the heat transfer efficiency between the limiting magnet 230, the shielding assembly 280 and the lower housing assembly 250 in the wireless charger 200. Figure 18 Figure 18 As shown in (r), the gap between the shielding assembly 280 arranged on the lower surface of the limiting magnet 230 and the magnet support plane 253 of the lower housing assembly 250 can also be filled with a heat-conducting adhesive to improve the heat transfer efficiency between the limiting magnet 230, the shielding assembly 280 and the lower housing assembly 250 in the wireless charger 200.

[0191] In the wireless charger 200 provided by the embodiments, the heat dissipation ring 240 is made of a material with high thermal conductivity and low electrical conductivity. The heat dissipation ring 240 is arranged on the magnet support plane 253. The heat dissipation ring 240 is in contact with one or more of the upper housing assembly 210, the magnetic sheet coil 220, the limiting magnet 230 and the circuit board 260, and can transfer the heat of the upper housing assembly 210, the magnetic sheet coil 220, the limiting magnet 230 and the circuit board 260 to the lower housing assembly 250, increase the heat dissipation area of the wireless charger 200, and improve the heat dissipation capacity of the wireless charger 200.

[0192] In one embodiment, the heat dissipation ring 240 can be a part of the lower housing assembly 250. The heat dissipation ring 240 and the lower housing assembly 250 are made by one-piece molding. The heat dissipation ring 240 is located on the magnet support plane 253 of the lower housing assembly 250. The heat dissipation ring 240 and the lower housing assembly 250 form an integral structure, which can reduce the number of components of the wireless charger 200 and reduce the assembly difficulty of the wireless charger 200.

[0193] ​​In an embodiment, the heat dissipation ring 240 and the lower shell assembly 250 are an integral structure, and the magnet support plane 253 of the lower shell assembly 250 can not need to be provided with the isolation plate 254. In the process of manufacturing the heat dissipation ring 240 and the lower shell assembly 250, the inner radius of the heat dissipation ring 240 is greater than the outer radius of the limiting magnet 230. In an embodiment, the recess structure of the lower shell assembly 250 without the isolation plate 254 can greatly reduce the manufacturing difficulty of the lower shell assembly 250.

[0194] In an embodiment, the heat dissipation ring 240 and the lower shell assembly 250 of the wireless charger 220 provided by the embodiment of the present application can be independent components, respectively. The assembly process of the wireless charger 200 is as follows:

[0195] First step: The heat dissipation ring 240 is arranged on the magnet support plane 253 of the lower shell assembly 250. Specifically, the heat dissipation ring 240 is in contact with and fixed to the magnet support plane 253 of the lower shell assembly 250, and the heat dissipation ring 240 is in contact with and fixed to the inner side wall of the circular ring-shaped column of the coil support plane 252 of the lower shell assembly 250.

[0196] Second step: The limiting magnet 230 is arranged inside the heat dissipation ring 240. Specifically, the limiting magnet 230 is in contact with and fixed to the magnet support plane 253 of the lower shell assembly 250, and the limiting magnet 230 is in contact with and fixed to the inner side surface of the heat dissipation ring 240. Correspondingly, the limiting magnet 230, the heat dissipation ring 240

[0197] Third step: The cable 270 is electrically connected to the circuit board 260 through the through hole 255 of the lower shell assembly 250. Specifically, the cable 270 can be fixed to the end point on the outer surface of the circuit board 260 by welding or the like.

[0198] Fourth step: The circuit board 260 is arranged on the circuit board support plane 256 of the lower shell assembly 250. Specifically, the surface of the circuit board 260 connected with one side of the cable 270 is in contact with and fixed to the circuit board support plane 256, and the protrusions of the cable 270 and the circuit board 260 are embedded in the wire grooves 257 of the circuit board support plane 256.

[0199] Fifth step: The magnetic sheet coil 220 is arranged on the coil support plane 252 of the lower shell assembly 250. Specifically, the magnetic sheet coil 220 is in contact with and fixed to the coil support plane 252 of the lower shell assembly 250, and the coil port of the magnetic sheet coil 220 is electrically connected to the port of the circuit board 260. The magnetic sheet coil 220 is nested between the outer side surface of the heat dissipation ring 240 and the inner side wall of the recess structure of the lower shell assembly 250, and the limiting magnet 230, the heat dissipation ring 240, the magnetic sheet coil 220, and the inner side wall of the recess structure of the lower shell assembly 250 form a transverse limiting structure.

[0200] Step 6: Set the upper shell assembly 210 on the upper shell support plane 251 of the lower shell assembly 250. Specifically, the upper shell assembly 210 is in contact with and fixed on the upper shell support plane 251 of the lower shell assembly 250, and the upper surface of the upper shell assembly 210 is in the same plane as the upper surface of the lower shell assembly 250. The lower surface of the upper shell assembly 210 is in contact with the upper surface of the magnetic sheet coil 220, and the upper shell assembly 210, the magnetic sheet coil 220, and the coil support plane 252 form a longitudinal limiting structure.

[0201] In the assembling process of the wireless charger 200, the heat dissipation ring 240, the limiting magnet 230, the circuit board 260, the magnetic sheet coil 220, and the upper shell assembly 210 are sequentially fixed on the magnet support plane 253, the circuit board support plane 256, the coil support plane 252, and the upper shell support plane 251 of the lower shell assembly 250 from bottom to top, thereby realizing the assembly of the wireless charger 200.

[0202] In an embodiment, the heat dissipation ring 240 is a part of the lower shell assembly 250. In the assembling process of the wireless charger 200, the above-mentioned "Step 1" can be omitted. In this application, the heat dissipation ring 240 and the lower shell assembly 250 form an integral structure, which can reduce the number of components of the wireless charger 200, make the wireless charger 200 easier to assemble, and improve the assembly efficiency.

[0203] In an embodiment, the heat dissipation ring 240 and the lower shell assembly 250 are independent components. The lower shell assembly 250 is composed of a bottom plate and a side plate. The assembling process of the wireless charger 200 is as follows:

[0204] Step 1: Set the heat dissipation ring 240 on the bottom plate of the lower shell assembly 250. Specifically, the heat dissipation ring 240 is in contact with and fixed on the bottom plate of the lower shell assembly 250. At this time, the bottom plate of the lower shell assembly 250 is the magnet support plane 253 of the lower shell assembly 250.

[0205] Step 2: Set the limiting magnet 230 inside the heat dissipation ring 240. Specifically, the limiting magnet 230 is in contact with and fixed on the bottom plate of the lower shell assembly 250, and the limiting magnet 230 is in contact with and fixed on the inner surface of the heat dissipation ring 240.

[0206] Step 3: The cable 270 is electrically connected to the circuit board 260 by passing through the through hole 255 of the side plate of the lower shell assembly 250. Specifically, the cable 270 can be fixed on the end point of the outer surface of the circuit board 260 by welding or other methods.

[0207] Fourth step: set the circuit board 260 on the circuit board support plane 256 of the lower shell assembly 250. Specifically, the surface of the circuit board 260 connected with one side of the cable 270 is in contact with and fixed on the circuit board support plane 256, and the protrusions of the cable 270 and the circuit board 260 are sunk into the wire grooves 257 of the circuit board support plane 256.

[0208] Fifth step: set the magnetic sheet coil 220 on the coil support plane 252 of the side plate of the lower shell assembly 250. Specifically, the magnetic sheet coil 220 is in contact with and fixed on the coil support plane 252 of the side plate of the lower shell assembly 250, and the coil port of the magnetic sheet coil 220 is electrically connected with the port of the circuit board 260.

[0209] It should be noted that during the assembly process of the wireless charger 200, the "first step" and the "second step" are to assemble the bottom plate of the lower shell assembly 250 as the assembly line, and the "third step", the "fourth step" and the "fifth step" are to assemble the side plate of the lower shell assembly 250 as the assembly line. During the assembly process, the assembly line of the bottom plate of the lower shell assembly 250 and the assembly line of the side plate of the lower shell assembly 250 are not in a certain order, and the two can be assembled at the same time or in a front-to-back manner. The present application does not limit this.

[0210] Sixth step: set the side plate of the lower shell assembly 250 on the bottom plate of the lower shell assembly 250. Specifically, the side plate of the lower shell assembly 250 is nested on the bottom plate of the lower shell assembly 250, so that the heat dissipation ring 240 is in contact with and fixed on the inner side wall of the circular column of the coil support plane 252 of the side plate of the lower shell assembly 250, and the side plate of the lower shell assembly 250 is in contact with and fixed on the bottom plate of the lower shell assembly 250.

[0211] Seventh step: set the upper shell assembly 210 on the upper shell support plane 251 of the side plate of the lower shell assembly 250. Specifically, the upper shell assembly 210 is in contact with and fixed on the upper shell support plane 251 of the side plate of the lower shell assembly 250, and the upper surface of the upper shell assembly 210 is on the same plane as the upper surface of the lower shell assembly 250.

[0212] In the embodiment of the present application, the lower shell assembly 250 is split into a bottom plate and a side plate during the assembly of the wireless charger, which reduces the complexity of the structure of the lower shell assembly 250, makes the wireless charger 200 easier to assemble, and improves the assembly efficiency. The lower shell assembly 250 is split into a bottom plate and a side plate, the heat dissipation ring 240 and the limiting magnet 230 are fixed on the bottom plate of the lower shell assembly 250, and the circuit board 260 and the magnetic sheet coil 220 are fixed on the coil support plane 252 of the side plate of the lower shell assembly 250. During the assembly process, the bottom plate of the lower shell assembly 250 and the side plate of the lower shell assembly 250 are assembled, and then the total assembly is performed, which can reduce the time of the wireless charger 200 and improve the manufacturing capacity.

[0213] In addition, the heat conduction components of the wireless charger 200 are split into the upper shell assembly 210, the side plate of the lower shell assembly 250, the bottom plate of the lower shell assembly 250, and the heat dissipation ring 240, and according to actual needs, each component is made of different materials, so that the wireless charger 200 can improve the heat dissipation performance and optimize the cost.

[0214] The upper shell assembly 210, the magnetic sheet coil 220, the limiting magnet 230, the heat dissipation ring 240, the lower shell assembly 250, and the circuit board 260 in the wireless charger 200 provided by the embodiment of the present application can be fixed at the predetermined position by the adhesive, which enhances the structural strength of the wireless charger 200 and improves the durability of the product. The gap between the upper shell assembly 210, the magnetic sheet coil 220, the limiting magnet 230, the heat dissipation ring 240, the lower shell assembly 250, and the circuit board 260 in the wireless charger 200 can also be filled with heat-conducting glue, which improves the structural strength and heat dissipation performance of the wireless charger 200.

[0215] In the embodiment of the present application, the upper surface of the lower shell assembly 250 of the wireless charger 200 is provided with a groove structure, and the upper shell assembly 210 is coupled to form a cavity structure by the adhesive. The heat dissipation ring 240 is nested in the limiting magnet 230, and the magnetic sheet coil 220 is nested in the heat dissipation ring 240.

[0216] In one embodiment, the upper shell assembly 210 is fixed to the upper shell support plane 251 of the lower shell assembly 250 by the adhesive. Specifically, the upper shell support plane 251 or the lower surface of the upper shell assembly 210 is provided with the adhesive, the upper shell assembly 210 is arranged on the upper shell support plane 251, and the lower surface of the upper shell assembly 210 is fixedly connected with the upper shell support plane 251 by the adhesive. In the embodiment of the present application, the upper shell assembly 210 and the lower shell assembly 250 of the wireless charger 200 are fixed together by the adhesive, and compared with the existing screw fixing mode, the shell of the wireless charger 200 is more beautiful.

[0217] In the embodiments of the present application, the adhesive can also be AB glue, double-sided tape, etc., which are not limited in the present application. The AB glue can be acrylic, epoxy, polyurethane, etc.

[0218] In one embodiment, at least one of the limiting magnet 230 or the heat dissipation ring 240 is fixed to the bottom of the groove structure of the lower shell assembly 250 by an adhesive. In one embodiment, at least one of the limiting magnet 230 or the heat dissipation ring 240 is fixed to the lower surface of the upper shell assembly 210 by an adhesive.

[0219] In one embodiment, the heat dissipation ring 240 is fixed on the magnet support plane 253 of the lower shell assembly 250 by an adhesive. Specifically, the bottom of the heat dissipation ring 240 is provided with an adhesive, the heat dissipation ring 240 is arranged at a set position of the magnet support plane 253 of the lower shell assembly 250, and the adhesive fixes the heat dissipation ring 240 to the magnet support plane 253 of the lower shell assembly 250, avoiding the heat dissipation ring 240 from shaking inside the wireless charger 200 to produce abnormal sound.

[0220] The heat dissipation ring 240 is fixed to the magnet support plane 253 of the lower shell assembly 250, and there can be a gap between the side surface of the heat dissipation ring 240 and the inner side wall of the groove structure of the lower shell assembly 250. The gap between the side surface of the heat dissipation ring 240 and the inner side wall of the groove structure of the lower shell assembly 250 can be filled with a heat-conducting adhesive to improve the heat dissipation capacity of the wireless charger 200. Correspondingly, the inner side wall of the groove structure of the lower shell assembly 250, the magnetic sheet coil 220, and the heat dissipation ring 240 form a transverse limiting structure, avoiding the magnetic sheet coil 220 and the heat dissipation ring 240 from shaking transversely inside the wireless charger 200 to produce abnormal sound, and improving the structural reliability of the wireless charger 200.

[0221] In one embodiment, the limiting magnet 230 is fixed on the magnet support plane 253 of the lower shell assembly 250 by an adhesive. Specifically, the bottom surface of the limiting magnet 230 is provided with an adhesive, the limiting magnet 230 is embedded in the heat dissipation ring 240, and the limiting magnet 230 is in contact with the magnet support plane 253 of the lower shell assembly 250. The adhesive fixes the limiting magnet 230 to the magnet support plane 253 of the lower shell assembly 250, avoiding the limiting magnet 230 from shaking inside the wireless charger 200 to produce abnormal sound.

[0222] In an embodiment, the limiting magnet 230 is nested in the heat dissipation ring 240, and a gap exists between the outer side surface of the limiting magnet 230 and the inner side surface of the heat dissipation ring 240. The gap between the outer side surface of the limiting magnet 230 and the inner side surface of the heat dissipation ring 240 can be filled with a heat-conducting adhesive. Correspondingly, the inner side wall of the groove structure of the lower shell assembly 250, the magnetic sheet coil 220, the heat dissipation ring 240, and the limiting magnet 230 constitute a transverse limiting structure, which avoids the magnetic sheet coil 220, the limiting magnet 230, and the heat dissipation ring 240 from shaking inside the wireless charger 200 to produce abnormal sound, and improves the structural reliability of the wireless charger 200. In addition, the heat-conducting adhesive can fill the gap between the outer side surface of the limiting magnet 230 and the inner side surface of the heat dissipation ring 240, and improve the heat dissipation capability of the wireless charger 200.

[0223] In an embodiment, the circuit board 260 is fixed in the receiving cavity by a heat-conducting adhesive. Specifically, the magnetic sheet coil 220 is arranged on the coil support plane 252, and the circuit board 260 is arranged between the magnetic sheet coil 220 and the bottom of the groove structure of the lower shell bottom assembly 250. The magnetic sheet coil 220 and the bottom of the groove structure of the lower shell bottom assembly 250 form a receiving cavity. The gap between the magnetic sheet coil 220, the bottom of the groove structure of the lower shell bottom assembly 250, and the circuit board 260 is filled with a heat-conducting adhesive. The heat-conducting adhesive fixes the circuit board 260 in the receiving cavity, avoids the circuit board 260 from shaking inside the wireless charger 200 to produce abnormal sound, and also avoids the circuit board 260 from moving in the receiving cavity to cause a circuit breaking problem, thereby improving the reliability of the wireless charger 200.

[0224] In an embodiment, the circuit board 260 is fixed to the lower surface of the magnetic sheet coil 220 by an adhesive. Specifically, the surface of the circuit board 260 or the lower surface of the magnetic sheet coil 220 is provided with an adhesive, which fixes the circuit board 260 to the lower surface of the magnetic sheet coil 220, avoids the circuit board 260 from shaking inside the wireless charger 200 to produce abnormal sound, and also avoids the circuit board 260 from moving in the receiving cavity to cause a circuit breaking problem, thereby improving the reliability of the wireless charger 200.

[0225] In the embodiment, the groove structure of the lower shell assembly 250 is provided with a coil support plane 252. The coil support plane 252 is used to support the magnetic sheet coil 220. The coil support plane 252 is close to the upper surface of the lower shell assembly 250.

[0226] In an embodiment, the magnetic sheet coil 220 is fixed to the coil support plane 252 of the lower shell assembly 250 by an adhesive. Specifically, the coil support plane 252 is provided with an adhesive, and the magnetic sheet coil 220 is arranged on the coil support plane 252. The adhesive fixes the magnetic sheet coil 220 to the coil support plane 252 of the lower shell assembly 250, and avoids the magnetic sheet coil 220 from shaking inside the wireless charger 200 to produce abnormal sound.

[0227] In an embodiment, the upper surface of the magnetic sheet coil 220 is in contact with the lower surface of the upper housing assembly 210. The upper surface of the magnetic sheet coil 220 is the surface of the magnetic sheet coil 220 close to the upper housing assembly 210, and the lower surface of the upper housing assembly 210 is the surface of the upper housing assembly 210 constituting the cavity structure. The coil support plane 252 supports the magnetic sheet coil 220, and the upper housing assembly 210, the magnetic sheet coil 220, and the coil support plane 252 constitute a longitudinal limiting structure to avoid the magnetic sheet coil 220 from shaking inside the wireless charger 200 and generating abnormal sound.

[0228] In an embodiment, the lower surface of the upper housing assembly 210, the recess structure of the lower housing assembly 250, and the gap between the magnetic sheet coil 220 are filled with a heat-conducting adhesive. The upper housing assembly 210, the magnetic sheet coil 220, and the coil support plane 252 constitute a longitudinal limiting structure to avoid the magnetic sheet coil 220 from shaking inside the wireless charger 200 and generating abnormal sound, and improve the heat dissipation efficiency of the wireless charger 200.

[0229] In an embodiment, the coil support plane 252 is a fence-shaped structure, and the gaps between the fences of the fence-shaped structure are filled with a heat-conducting adhesive. Specifically, the coil support plane 252 includes a fence-shaped support body. The fence-shaped support body includes an arc-shaped fence and a plurality of column-shaped fences. The gaps between the column-shaped fences, the arc-shaped fence, and the inner side walls of the recess structure of the lower housing assembly 250 are filled with a heat-conducting adhesive to improve the heat dissipation capacity of the wireless charger 200.

[0230] In an embodiment, the lower housing assembly 250 includes a bottom plate and a side plate. The side plate of the lower housing assembly 250 is fixed to the bottom plate of the lower housing assembly 250 by an adhesive. Specifically, the adhesive used between the bottom plate of the lower housing assembly 250 and the side plate of the lower housing assembly 250 is generally AB glue. The heat dissipation ring 240 and the limiting magnet 230 are fixed to the bottom plate of the lower housing assembly 250 by double-sided adhesive.

[0231] The wireless charger 200 provided by the embodiments of the present application fixes the plurality of components in the wireless charger 200 by an adhesive, enhances the structural strength of the wireless charger 200, and improves the durability of the product. In addition, the gaps between the plurality of components in the wireless charger 200 are filled with a heat-conducting adhesive to improve the heat dissipation capacity of the wireless charger 200.

[0232] In the embodiments of the present application, the powder of the ceramic material is used as the adhesive in the wireless charger 200, and other types of adhesives such as white glue and double-sided adhesive are not needed, which can reduce the types of adhesives and reduce the manufacturing cost of the wireless charger 200. Moreover, the powder of the ceramic material has good heat conductivity, which further improves the heat dissipation capacity of the wireless charger 200.

[0233] In the embodiment of the present application, the wireless charger 200 generates a large amount of heat when performing wireless charging. The wireless power signal generated by the wireless charger 200 generates a vortex on the limiting magnet 230, which generates a large amount of heat in the limiting magnet 230. The circuit board 260 works for a long time, and various components of the circuit board 260 generate heat.

[0234] In the embodiment of the present application, the components generating heat in the wireless charger 200 are mainly the magnetic sheet coil 220 and the circuit board 260. The magnetic sheet coil 220 generates a large amount of heat in the process of converting electrical energy into a wireless power signal. The heat generated by the circuit board 260 is much lower than that generated by the magnetic sheet coil 220 and the limiting magnet 230. Therefore, the main problem solved by the present application is the heat generated by the magnetic sheet coil 220 and the limiting magnet 230.

[0235] In order to improve the heat dissipation capacity of the wireless charger 200, the upper housing assembly 210 and the lower housing assembly 250 of the wireless charger 200 can be made of high thermal conductivity materials. In the embodiment of the present application, the high thermal conductivity materials include ceramics, heat-conducting plastics, etc.

[0236] In one embodiment, the upper housing assembly 210 and the lower housing assembly 250 can be made of low electrical conductivity materials. In the process of converting electrical energy into a wireless power signal by the magnetic sheet coil 220, the shell of the wireless charger 200 cannot transmit electrical energy, and there is no risk of electric shock.

[0237] Figure 18 A schematic diagram of heat transfer of the magnetic sheet coil, the limiting magnet, etc. of the wireless charger provided in the embodiment of the present application. In the embodiment of the present application, the wireless charger 200 includes an upper housing assembly 210, a magnetic sheet coil 230, a heat dissipation ring 240, and a lower housing assembly 250. The upper surface of the lower housing assembly 250 is provided with a groove structure, and the groove structure of the lower housing assembly 250 is coupled with the upper housing assembly 210 to form a cavity structure. The magnetic sheet coil 230 is nested outside the heat dissipation ring 240. The gap between the upper housing assembly 210, the groove structure of the lower housing assembly 250, the magnetic sheet coil 230, and the heat dissipation ring 240 is filled with a heat-conducting adhesive.

[0238] As Figure 18As shown, the lower housing assembly 250 of the wireless charger 200 has a recessed structure in which a magnetic coil 220 and a heat sink ring 240 are provided. The heat sink ring 240 is disposed within the annular structure of the magnetic coil 220, with the magnetic coil 220 nested outside the heat sink ring. The outer surface of the heat sink ring 240 is coupled to the magnetic coil 220, and the outer surface of the heat sink ring 240 is in contact with the inner surface of the magnetic coil 220. The upper surface of the heat sink ring 240 is coupled to the lower surface of the upper housing assembly 210, and the lower surface of the heat sink ring 240 is coupled to the bottom of the recessed structure of the lower housing assembly 250. The upper surface of the heat sink ring 240 is the surface of the heat sink ring 240 near the upper housing assembly 210, and the lower surface of the heat sink ring 240 is the surface of the heat sink ring 240 near the bottom of the recessed structure of the lower housing assembly 250. The lower surface of the upper housing assembly 210 is the surface of the upper housing assembly 10 that forms the cavity structure.

[0239] In one embodiment, the heat dissipation ring 240 is fixed between the lower surface of the upper housing assembly 210 and the bottom of the recessed structure of the lower housing assembly 250. In another embodiment, a thermally conductive adhesive is disposed between the upper surface of the heat dissipation ring 240 and the upper housing assembly 210, and a thermally conductive adhesive is disposed between the lower surface of the heat dissipation ring 240 and the bottom of the recessed structure of the lower housing assembly 250. The heat dissipation ring 210 is used to conduct heat from the upper housing assembly 210 and the magnetic coil 220 to the bottom of the recessed structure of the lower housing assembly 250.

[0240] In one embodiment, the heat dissipation ring 240 and the lower housing assembly 250 are made of a material with high thermal conductivity. Heat generated on the inner surface of the magnetic coil 220 can be transferred to the heat dissipation ring 240 via a thermally conductive colloid. Heat from the heat dissipation ring 240 is then transferred to the lower housing assembly 250 via the thermally conductive colloid. The lower housing assembly 250 exchanges heat with the external gas, transferring the heat from the magnetic coil 220 to the external gas, thereby reducing the temperature of the wireless charger 200.

[0241] like Figure 18 As shown, the recessed structure of the lower housing assembly 250 is provided with a coil support plane 252. A magnetic sheet coil 220 is disposed on the coil support plane 252. In one embodiment, the outer surface of the magnetic sheet coil 220 contacts the inner wall of the recessed structure of the lower housing assembly 250, and the lower surface of the magnetic sheet coil 220 contacts the coil support plane 252 of the lower housing assembly 250. The heat generated by the magnetic sheet coil 220 can be quickly transferred to the lower housing assembly 250.

[0242] In one embodiment, the lower housing assembly 250 is made of high thermal conductivity material. The heat generated from the outer surface and the lower surface of the magnetic sheet coil 220 can be transferred to the lower housing assembly 250 through the thermal conductive glue. The lower housing assembly 250 exchanges heat with the air outside, and transfers the heat of the magnetic sheet coil 220 to the air outside, so as to reduce the temperature of the wireless charger 200.

[0243] In one embodiment, the magnetic sheet coil 220 is coupled to the lower surface of the upper housing assembly 210, and the thermal conductive glue is arranged between the magnetic sheet coil 220 and the lower surface of the upper housing assembly 210. In one embodiment, the lower surface of the upper housing assembly 210 of the wireless charger 200 is in contact with the upper surface of the magnetic sheet coil 220. The heat generated from the upper surface of the magnetic sheet coil 220 can be transferred to the upper housing assembly 210 through the thermal conductive glue. The upper housing assembly 210 exchanges heat with the air outside, and transfers the heat of the magnetic sheet coil 220 to the air outside, so as to reduce the temperature of the wireless charger 200.

[0244] As shown in FIG. 2, Figure 18 The wireless charger 200 further comprises a limiting magnet 230. The limiting magnet 230 is arranged inside the heat dissipation ring 240. The upper surface of the limiting magnet 230 is coupled to the lower surface of the upper housing assembly 210, and the lower surface of the limiting magnet 230 is coupled to the bottom of the groove structure of the lower housing assembly 250. The upper surface of the limiting magnet 230 is the surface of the limiting magnet 230 close to the upper housing assembly 210, and the lower surface of the limiting magnet 230 is the surface of the limiting magnet 230 close to the bottom of the groove structure of the lower housing assembly 250.

[0245] In one embodiment, the limiting magnet 230 is fixed between the lower surface of the upper housing assembly 210 and the bottom of the groove structure of the lower housing assembly 250. In one embodiment, the thermal conductive glue is arranged between the upper surface of the limiting magnet 230 and the lower surface of the upper housing assembly 210, and the thermal conductive glue is arranged between the lower surface of the limiting magnet 230 and the bottom of the groove structure of the lower housing assembly 250. The thermal conductive glue is arranged between the heat dissipation ring 240 and the limiting magnet 230. The limiting magnet 230 is used to transfer the heat of the upper housing assembly 210 to the bottom of the groove structure of the lower housing assembly 250, so as to greatly improve the heat dissipation capacity of the wireless charger 200, and reduce the temperature of the wireless charger 200.

[0246] In one embodiment, the side surface of the limiting magnet 230 is in contact with the inner surface of the heat dissipation ring 240, and the heat generated from the limiting magnet 230 can be quickly transferred to the heat dissipation ring 240.

[0247] As shown in FIG. 2, Figure 19As shown, the magnet support plane 253 of the lower housing assembly 250 is provided with a plurality of heat dissipation holes 258. The heat dissipation holes 258 are located at the positions of the magnet support plane 253 where the limiting magnets 230 are fixed. The heat of the limiting magnets 230 can be exchanged with the external gas through the heat dissipation holes 258, so as to transfer the heat of the limiting magnets 230 to the external gas, thereby reducing the temperature of the wireless charger 200. In other embodiments, the number of the heat dissipation holes 258 can be any number. The shape of the heat dissipation holes 258 can be oval, polygonal or other shapes.

[0248] In an embodiment, the radius of the convex structure of the lower surface of the upper housing assembly 210 is not greater than the radius of the inner side of the magnetic sheet assembly 221 of the magnetic sheet coil 220, and the radius of the convex structure of the lower surface of the upper housing assembly 210 is not less than the radius of the limiting magnet 230. The upper housing assembly 210 is arranged on the upper housing support plane 251 of the lower housing assembly 250. The upper housing assembly 210 not only contacts the upper surface of the magnetic sheet coil 220, but also the bottom of the convex structure of the upper housing assembly 210 contacts the upper surface of the limiting magnet 230, so that the heat of the limiting magnet 230 is transferred to the upper housing assembly 210. The upper housing assembly 210 exchanges heat with the external gas, thereby reducing the temperature of the wireless charger 200.

[0249] In an embodiment, the radius of the convex structure of the lower surface of the upper housing assembly 210 is not less than the radius of the heat dissipation ring 240. The upper housing assembly 210 is arranged on the upper housing support plane 251 of the lower housing assembly 250. The upper housing assembly 210 not only contacts the upper surface of the magnetic sheet coil 220, but also the upper housing assembly 210 contacts the limiting magnet 230 and the heat dissipation ring 240, so that the heat of the limiting magnet 230 and the heat dissipation ring 240 is transferred to the upper housing assembly 210. The upper housing assembly 210 exchanges heat with the external gas, thereby reducing the temperature of the wireless charger 200.

[0250] In the embodiment, the upper surface of the limiting magnet 230 and the upper surface of the heat dissipation ring 240 contact the upper housing assembly 210. The lower surface of the limiting magnet 230 and the lower surface of the heat dissipation ring 240 contact the bottom of the groove structure of the lower housing assembly 250. The heat generated by the limiting magnet 230 can be transferred to the upper housing assembly 210 and the lower housing assembly 250, so as to further improve the heat dissipation capacity of the wireless charger 200.

[0251] As shown in FIG. 19, the lower surface of the circuit board 260 is in contact with the magnet support plane 253 of the lower housing assembly 250, or the upper surface of the circuit board 260 is in contact with the magnetic sheet coil 220. The heat generated by the circuit board 260 is transferred to the magnetic sheet coil 220, the heat dissipation ring 240, and the lower housing assembly 250. In an embodiment, the temperature of the magnetic sheet coil 220 is higher than the temperature of the circuit board 260, and the circuit board 260 does not transfer heat to the magnetic sheet coil 220, but absorbs the heat of the magnetic sheet coil 220. At this time, the heat generated by the circuit board 260 is transferred to the lower housing assembly 250. In an embodiment, the temperature of the circuit board 260 is higher than the temperature of the magnetic sheet coil 220, and the heat generated by the circuit board 260 is transferred to the magnetic sheet coil 220 and the lower housing assembly 250. The heat generated by the circuit board 260 and the heat generated by the magnetic sheet coil 220 are exchanged through the shell of the wireless charger 200, thereby reducing the temperature of the wireless charger 200.

[0252] In the embodiment of the present application, the upper surface of the magnetic sheet coil 220 of the wireless charger 200 is in contact with the upper housing assembly 210, the outer surface of the magnetic sheet coil 220 and the lower surface of the magnetic sheet coil 220 are in contact with the lower housing assembly 250, and the inner surface of the magnetic sheet coil 220 is indirectly in contact with the upper housing assembly 210 and the lower housing assembly 250 through the limiting magnet 230 and the heat dissipation ring 240. The heat generated by the magnetic sheet coil 220 can be transferred from all around to the shell of the wireless charger 200, thereby greatly improving the heat dissipation capacity of the wireless charger 200. The shell of the wireless charger 200 exchanges heat with the gas outside, thereby reducing the temperature of the wireless charger 200.

[0253] Figure 19 A schematic diagram of heat transfer of an electronic device provided in the embodiment of the present application to a wireless charger is shown in FIG. 20. As shown in FIG. 20, the wireless charger 200 wirelessly charges the electronic device 100, and the electronic device 100 generates heat. The electronic device 100 has many components and a complex structure, and needs to prevent the temperature of the electronic device 100 from being too high. Therefore, when the electronic device 100 generates heat and the temperature is too high, the wireless charging power needs to be reduced or the wireless charging needs to be stopped, thereby affecting the wireless charging speed of the electronic device 100. Figure 19

[0254] As shown in FIG. 21, the electronic device 100 is placed on the wireless charger 200, and the wireless charger 200 wirelessly charges the electronic device 100. The electronic device 100 generates heat during the wireless charging. The heat generated by the electronic device 100 is transferred to the upper housing assembly 210, the limiting magnet 230, the heat dissipation ring 240, the magnetic sheet coil 220, and the lower housing assembly 250. In an embodiment, the temperature of the electronic device 100 is higher than the temperature of the magnetic sheet coil 220, and the electronic device 100 does not transfer heat to the magnetic sheet coil 220, but absorbs the heat of the magnetic sheet coil 220. At this time, the heat generated by the electronic device 100 is transferred to the lower housing assembly 250. In an embodiment, the temperature of the electronic device 100 is higher than the temperature of the magnetic sheet coil 220, and the heat generated by the electronic device 100 is transferred to the magnetic sheet coil 220 and the lower housing assembly 250. The heat generated by the electronic device 100 and the heat generated by the magnetic sheet coil 220 are exchanged through the shell of the wireless charger 200, thereby reducing the temperature of the wireless charger 200. Figure 19 Figure 6 Figure 20 Figure 20 Figure 20 ​As shown, the electronic device 100 is arranged on the upper surface of the upper housing assembly 210 of the wireless charger 200 during the wireless charging process. The protruding structure of the electronic device 100 is embedded in the groove structure 211 of the upper housing assembly 210, and the protruding structure of the electronic device 100 can be in contact with the groove structure 211 of the upper housing assembly 210. The periphery of the upper surface of the upper housing assembly 210 is in contact with the lower surface of the electronic device 100. The heat of the electronic device 100 is transferred to the outer shell of the wireless charger 200, increases the heat dissipation area of the electronic device 100, and can accelerate the reduction of the temperature of the electronic device 100.

[0255] After the upper housing assembly 210 exchanges heat with the electronic device 100, part of the heat of the upper housing assembly 210 directly exchanges heat with the surrounding gas, transfers the heat of the electronic device 100 to the gas surrounding the upper housing assembly 210, and reduces the temperature of the electronic device 100. The upper housing assembly 210 can also be transferred to the lower housing assembly 250. The outer surface area of the lower housing assembly 250 is relatively large, and can quickly transfer the heat of the electronic device 100 to the surrounding gas, thereby quickly reducing the temperature of the electronic device 100.

[0256] In an embodiment, the materials of the upper housing assembly 210 and the lower housing assembly 250 are high-thermal-conductivity materials. The thermal conductivity of the upper housing assembly 210 and the lower housing assembly 250 is higher than that of the electronic device 100, and the thermal resistance of the upper housing assembly 210 and the lower housing assembly 250 is lower than that of the electronic device 100. The upper housing assembly 210 can quickly absorb the heat of the electronic device 100 and transfer it to the surrounding gas and the lower housing assembly 250, thereby improving the heat dissipation capacity of the electronic device 100. The heat of the electronic device 100 is dissipated through the heat dissipation channel of “electronic device 100→upper housing assembly 210 of the wireless charger 200→lower housing assembly 250 of the wireless charger 200”, thereby quickly reducing the temperature of the electronic device 100 and improving the wireless charging speed of the electronic device 100.

[0257] In an embodiment, the gaps of the upper housing assembly 250, the limiting magnet 230, the heat dissipation ring 240, and the lower housing assembly 250 of the wireless charger 200 are filled with a thermal conductive glue. The upper housing assembly 210 absorbs the heat of the electronic device 100, and the heat of the upper housing assembly 210 can be transferred to the side surface of the lower housing assembly 250 and the bottom plate of the lower housing assembly 250 through the thermal conductive glue. In the embodiment of the present application, the heat of the electronic device 100 is dissipated through the heat dissipation channel of “electronic device 100→upper housing assembly 210 of the wireless charger 200→thermal conductive glue→lower housing assembly 250 of the wireless charger 200”, thereby quickly reducing the temperature of the electronic device 100 and improving the wireless charging speed of the electronic device 100.

[0258] In an embodiment, the protruding structure 212 of the upper housing assembly 210 is in contact with the upper surface of the limiting magnet 230 and the upper surface of the heat dissipation ring 240 through a heat conductive glue or directly. The lower surface of the limiting magnet 230 is in contact with the bottom of the recessed structure of the lower housing assembly 250. The lower surface of the heat dissipation ring 240 is in contact with the bottom of the recessed structure of the lower housing assembly 250.

[0259] After the upper housing assembly 210 absorbs the heat of the electronic device 100, the heat of the upper housing assembly 210 is transferred to the limiting magnet 230 and the heat dissipation ring 240. The heat of the limiting magnet 230 and the heat dissipation ring 240 is transferred to the bottom of the recessed structure of the lower housing assembly 250. In other embodiments, the upper housing assembly 210 can use one of the limiting magnet 230 and the heat dissipation ring 240 to transfer heat to the bottom of the recessed structure of the lower housing assembly 250.

[0260] In the embodiments of the present application, the heat of the electronic device 100 is dissipated through the heat dissipation channel of “electronic device 100→upper housing assembly 210 of wireless charger 200→limiting magnet 230 and / or heat dissipation ring 240→lower housing assembly 250 of wireless charger 200”, which realizes rapid reduction of the temperature of the electronic device 100, thereby improving the wireless charging speed of the electronic device 100.

[0261] The wireless charger 200 provided in the embodiments of the present application can dissipate heat for the electronic device 100 when the wireless charger 200 performs wireless charging on the electronic device 100, thereby improving the heat dissipation capacity of the electronic device 100 and improving the wireless charging speed of the electronic device 100. In experimental simulation, when the wireless charger 200 provided in the embodiments of the present application performs wireless charging on the electronic device 100, the charging time of the electronic device 100 from 0 to 100% can be reduced by 25 min, and the charging speed is obviously improved.

[0262] The wireless charger provided in the embodiments of the present application includes an upper housing assembly and a lower housing assembly. A plurality of support planes, such as an upper housing support plane, a coil support plane, a magnet support plane, a circuit board support plane, etc., are arranged in the lower housing assembly. The upper housing support plane supports the upper housing assembly. The coil support plane supports the magnetic sheet coil. The magnet support plane supports the limiting magnet and the heat dissipation ring. The circuit board support plane supports the circuit board 260. The plurality of support planes of the wireless charger support each component at different positions, avoiding that each component is stacked together. If the wireless charger is subjected to external force, the components stacked together will be damaged, thereby reducing the reliability of the wireless charger 200.

[0263] The wireless charger provided by the embodiment of the present application comprises an upper shell assembly, a lower shell assembly and a magnetic sheet coil. The upper surface of the lower shell assembly is provided with a groove structure, the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil. The magnetic sheet coil comprises a magnetic sheet assembly and a coil assembly. The upper surface of the magnetic sheet assembly is provided with an annular groove for accommodating the coil assembly. After the coil assembly converts electric energy into wireless power signals, the wireless power signals are radiated to the surroundings. Under the limitation of the magnetic sheet assembly, the wireless power signals are radiated along a set direction. The magnetic sheet assembly limits the radiation direction of the wireless power signals, avoiding the wireless power signals generated by the coil assembly from forming vortexes on other components of the wireless charger, thereby preventing the temperature of the wireless charger from rising.

[0264] The wireless charger provided by the embodiment of the present application comprises an upper shell assembly, a lower shell assembly, a magnetic sheet coil, a limiting magnet and a shielding assembly. The upper surface of the lower shell assembly is provided with a groove structure, the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil, the limiting magnet and the shielding assembly. The shielding assembly is arranged between the magnetic sheet coil and the limiting magnet. The shielding assembly can block the wireless power signals generated by the coil assembly from forming vortexes on the limiting magnet, thereby preventing the temperature of the wireless charger from rising.

[0265] The wireless charger provided by the embodiment of the present application comprises an upper shell assembly, a lower shell assembly and a heat dissipation ring. The upper surface of the lower shell assembly is provided with a groove structure, the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the heat dissipation ring. The upper surface of the heat dissipation ring is coupled with the upper shell assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower shell assembly. The heat dissipation ring can transfer the heat of the wireless charger to the outside through the upper shell assembly and the lower shell assembly, thereby improving the heat dissipation capacity of the wireless charger.

[0266] The wireless charger provided by the embodiment of the present application comprises an upper shell assembly, a lower shell assembly and a heat dissipation ring. The upper surface of the lower shell assembly is provided with a groove structure, the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the heat dissipation ring. The upper surface of the heat dissipation ring is coupled with the upper shell assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower shell assembly. The heat of the electronic device is transferred to the upper shell assembly, and the heat dissipation ring can transfer the heat of the upper shell assembly to the bottom of the lower shell assembly, thereby increasing the heat dissipation area of the electronic device and improving the heat dissipation capacity of the electronic device.

[0267] The wireless charger provided in the embodiments of the present application comprises an upper shell assembly, a lower shell assembly, a magnetic sheet coil and a heat dissipation ring. The upper surface of the lower shell assembly is provided with a groove structure, the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil and the heat dissipation ring. The heat dissipation ring is nested in the magnetic sheet coil and is in contact with the magnetic sheet coil. The upper surface of the heat dissipation ring is coupled with the upper shell assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower shell assembly. The heat of the electronic device is transferred to the upper shell assembly, the heat dissipation ring can transfer the heat of the upper shell assembly to the bottom of the lower shell assembly, increase the heat dissipation area of the electronic device, and improve the heat dissipation capacity of the wireless charger and the electronic device.

[0268] The wireless charger provided in the embodiments of the present application comprises an upper shell assembly, a lower shell assembly, a magnetic sheet coil and a heat dissipation ring. The upper surface of the lower shell assembly is provided with a groove structure, the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil and the heat dissipation ring. The heat dissipation ring is nested in the magnetic sheet coil and is in contact with the magnetic sheet coil. The upper surface of the heat dissipation ring is coupled with the upper shell assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower shell assembly. The heat of the electronic device is transferred to the upper shell assembly, the heat dissipation ring can transfer the heat of the upper shell assembly to the bottom of the lower shell assembly, increase the heat dissipation area of the electronic device, and improve the heat dissipation capacity of the wireless charger and the electronic device.

[0269] The wireless charger provided in the embodiments of the present application comprises an upper shell assembly, a lower shell assembly, a magnetic sheet coil and a heat dissipation ring. The upper surface of the lower shell assembly is provided with a groove structure, the groove structure is coupled with the upper shell assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil and the heat dissipation ring. The heat dissipation ring is nested in the magnetic sheet coil and is in contact with the magnetic sheet coil. The upper surface of the heat dissipation ring is coupled with the upper shell assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower shell assembly. The heat of the electronic device is transferred to the upper shell assembly, the heat dissipation ring can transfer the heat of the upper shell assembly to the bottom of the lower shell assembly, increase the heat dissipation area of the electronic device, and improve the heat dissipation capacity of the wireless charger and the electronic device.

[0270] In the embodiments of the present application, the upper surface of the upper shell assembly is provided with a groove structure, so that the groove structure on the upper surface of the upper shell assembly can be coupled with the protruding structure of the electronic device, the distance between the electronic device and the wireless charger can be shortened, and the power loss during wireless charging can be reduced. The lower surface of the upper shell assembly is provided with a protruding structure, so that the upper shell assembly is in contact with the heat dissipation ring and the limiting magnet, and the heat dissipation capacity of the wireless charger is improved. The lower surface of the upper shell assembly is further provided with an annular groove, so that the magnetic sheet coil is embedded in the annular groove, and the height of the magnetic sheet coil can be increased. At this time, the magnetic sheet coil can accommodate an increased number of coil turns, and the power of the wireless charger is improved.

[0271] The wireless charger provided by the embodiment of the application comprises an upper shell assembly, a lower shell assembly, a magnetic sheet coil and a limiting magnet. The lower shell assembly comprises a side plate and a bottom plate, and the bottom plate of the lower shell assembly is fixed on one port of the side plate of the lower shell assembly to form a groove structure. The upper shell assembly is fixed on another port of the side plate of the lower shell assembly to form a cavity structure. The cavity structure accommodates the magnetic sheet coil and the limiting magnet. In the application, the lower shell assembly is split into two parts, i.e., the bottom plate and the side plate, and can be manufactured in two parts, thereby reducing the manufacturing difficulty of the lower shell assembly.

[0272] The types, quantities, shapes, mounting manners and structures of the components of the wireless charger provided by the embodiment of the application are not limited to the above-described embodiments, and any technical solution realized under the principle of the application is within the protection scope of the application. Any one or more embodiments or drawings in the specification, in a suitable manner, are combined into the protection scope of the application.

[0273] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application. Those skilled in the art should understand that although the application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents. The modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions in the embodiments of the application.

Claims

1. A wireless charger, characterized in that, include: The upper housing assembly (210), the lower housing assembly (250), and the magnetic sheet coil (220) are provided with a groove structure on the upper surface of the lower housing assembly. The groove structure of the lower housing assembly is coupled with the upper housing assembly to form a cavity structure, which is used to house the magnetic sheet coil. The groove structure of the lower housing assembly is provided with a coil support plane (252) for supporting the magnetic sheet coil. The upper surface of the magnetic sheet coil is in contact with the lower surface of the upper housing assembly. The upper surface of the magnetic sheet coil is the surface of the magnetic sheet coil close to the upper housing assembly, and the lower surface of the upper housing assembly is the surface of the upper housing assembly that constitutes the cavity structure. The magnetic sheet coil includes a magnetic sheet assembly (221) and a coil assembly (222). The magnetic sheet assembly is provided with an annular groove for receiving the coil assembly. The opening of the annular groove points towards the upper housing assembly. The top view cross-sectional area of ​​the opening of the annular groove is smaller than the top view cross-sectional area of ​​the bottom of the annular groove, or the top view cross-sectional area of ​​the opening of the annular groove is smaller than the top view cross-sectional area at any position between the opening of the annular groove and the bottom of the annular groove. The top view shape of the magnetic sheet assembly, the annular groove, and the coil assembly is a concentric annulus.

2. The wireless charger according to claim 1, characterized in that, The ratio between the outer radius of the magnetic sheet assembly and the inner radius of the magnetic sheet assembly is greater than 1.

9.

3. The wireless charger according to claim 1, characterized in that, The ratio between the outer radius of the annular groove and the inner radius of the annular groove is greater than 1.

7.

4. The wireless charger according to claim 1, characterized in that, The height of the inner magnetic sheet assembly of the annular groove is the same as the height of the outer magnetic sheet assembly of the annular groove.

5. The wireless charger according to claim 1, characterized in that, The lower surface of the upper housing assembly has a raised structure in the middle portion, and the height of the inner magnetic sheet assembly of the annular groove is less than the height of the outer magnetic sheet assembly of the annular groove.

6. The wireless charger according to claim 1, characterized in that, The inner wall of the groove structure of the lower housing assembly is provided with an upper housing support plane (251), which supports the upper housing assembly. The upper housing support plane is close to the upper surface of the lower housing assembly, and the coil support plane is close to the bottom of the groove structure of the lower housing assembly.

7. The wireless charger according to claim 6, characterized in that, The lower surface edge of the upper housing assembly is a plane, and the height of the outer magnetic sheet assembly of the annular groove is equal to the height difference between the upper housing support plane and the coil support plane.

8. The wireless charger according to claim 6, characterized in that, The lower surface edge of the upper housing assembly is provided with an annular protrusion, and the height of the outer magnetic sheet assembly of the annular groove is greater than the height difference between the upper housing support plane and the coil support plane.

9. The wireless charger according to any one of claims 1-8, characterized in that, It also includes a circuit board (260) fixed to the lower surface of the magnetic sheet coil, the lower surface of the magnetic sheet coil being the surface of the magnetic sheet coil near the bottom of the groove structure of the lower housing assembly.

10. The wireless charger according to claim 9, characterized in that, The outer magnetic sheet assembly of the annular groove is provided with at least one notch, which is used for coupling with the positioning structure on the inner sidewall of the groove structure of the lower housing assembly or for connecting wires between the coil assembly and the circuit board.

11. The wireless charger according to any one of claims 1-8, characterized in that, It also includes a limiting magnet, which is disposed in the middle of the annular structure of the magnetic sheet assembly.

12. The wireless charger according to claim 11, characterized in that, The limiting magnet is fixed between the lower surface of the upper housing assembly and the bottom of the groove structure of the lower housing assembly.

13. The wireless charger according to claim 12, characterized in that, It also includes a heat dissipation ring, which is nested between the magnetic sheet assembly and the limiting magnet.

14. The wireless charger according to claim 13, characterized in that, The heat dissipation ring is fixed between the lower surface of the upper housing assembly and the bottom of the groove structure of the lower housing assembly.

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