CN115189436A - Wireless charger - Google Patents

Wireless charger Download PDF

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Publication number
CN115189436A
CN115189436A CN202210795114.4A CN202210795114A CN115189436A CN 115189436 A CN115189436 A CN 115189436A CN 202210795114 A CN202210795114 A CN 202210795114A CN 115189436 A CN115189436 A CN 115189436A
Authority
CN
China
Prior art keywords
assembly
coil
magnetic sheet
wireless charger
magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210795114.4A
Other languages
Chinese (zh)
Inventor
关志鹏
王曌
曾苗苗
杨超
王勇
巩雅楠
何力
朱古力
古同
李小珍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Digital Power Technologies Co Ltd
Original Assignee
Huawei Digital Power Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Digital Power Technologies Co Ltd filed Critical Huawei Digital Power Technologies Co Ltd
Priority to CN202210795114.4A priority Critical patent/CN115189436A/en
Publication of CN115189436A publication Critical patent/CN115189436A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2876—Cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A wireless charger comprises an upper shell assembly, a lower shell assembly and a magnetic sheet coil. The upper surface of lower casing subassembly is provided with groove structure, and groove structure and last casing subassembly coupling constitute cavity structures. 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 magnetic sheet subassembly is provided with the ring channel for accomodate the coil pack. After the coil component converts the electric energy into a wireless power signal, the wireless power signal is radiated out along a set direction under the limitation of the magnetic sheet component. The magnetic sheet subassembly limits the radiation direction of wireless power signal, avoids the wireless power signal that the coil pack produced to form the vortex on other parts in wireless charger, leads to the inside temperature rise of wireless charger.

Description

Wireless charger
Technical Field
The invention relates to the technical field of wireless charging, in particular to a wireless charger.
Background
With the development of wireless charging technology, electronic devices can be charged through a wireless charger. The wireless charger converts the electric energy into a wireless power signal and transmits the wireless power signal to the electronic equipment to be charged, so that a wireless charging function is realized. The existing wireless charger has the defects of insecure structure, poor internal heat dissipation, low charging speed and the like, and is not beneficial to popularization and use of products.
Disclosure of Invention
In order to solve the above problem, an embodiment of the present application provides a wireless charger including an upper case assembly, a lower case 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 includes a magnetic sheet assembly and a coil assembly. The upper surface of magnetic sheet subassembly is provided with the ring channel for accomodate the coil pack. After the coil component converts the electric energy into a wireless power signal, the wireless power signal is radiated out along a set direction under the limitation of the magnetic sheet component. The magnetic sheet subassembly restriction wireless power signal's radiation direction avoids the wireless power signal that the coil pack produced to form the vortex on other parts in wireless charger, leads to the inside temperature rise of wireless charger.
Therefore, the following technical scheme is adopted in the embodiment of the application:
the application provides a wireless charger, includes: the magnetic sheet coil is arranged in the cavity structure; the groove structure of the lower shell assembly is provided with a coil supporting plane for supporting a 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, and the lower surface of the upper shell assembly is the surface of a cavity structure formed by the upper shell assembly; the magnetic sheet coil comprises a magnetic sheet assembly and a coil assembly, the magnetic sheet assembly is provided with an annular groove, the annular groove is used for accommodating the coil assembly, and the opening of the annular groove points to the upper shell assembly; the overlooking shapes of the magnetic sheet assembly, the annular groove and the coil assembly are concentric circular rings.
In one embodiment, a ratio between an outer radius of the magnet sheet assembly and an inner radius of the magnet sheet assembly is greater than 1.9.
In one embodiment, the ratio between the outside radius of the annular groove and the inside radius of the annular groove is greater than 1.7.
In one embodiment, the inner disk assembly of the annular groove has the same height as the outer disk assembly of the annular groove.
In one embodiment, a protrusion structure is provided at a middle portion of the lower surface of the upper case assembly, and a height of the inner magnetic sheet assembly of the annular groove is less than a height of the outer magnetic sheet assembly of the annular groove.
In one embodiment, the inner side wall of the groove structure of the lower housing assembly is provided with an upper housing support plane, which supports the upper housing assembly, the upper housing support plane being close to the upper surface of the lower housing assembly, and the coil support plane being close to the bottom of the groove structure of the lower housing assembly.
In one embodiment, the lower surface edge of the upper case assembly is a flat surface, and the height of the outer magnetic sheet assembly of the annular groove is equal to the height difference between the upper case support plane and the coil support plane.
In one embodiment, the lower surface edge of the upper case 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 case support plane and the coil support plane.
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 overlooking cross-sectional area of the opening of the annular groove is smaller than the overlooking cross-sectional area of any position between the opening of the annular groove and the bottom of the annular groove.
In one embodiment, the magnetic sheet coil further comprises a circuit board, the circuit board is fixed on 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 shell assembly.
In one embodiment, at least one notch is arranged on the outer magnetic sheet component of the annular groove, and the at least one notch is used for being coupled with a positioning structure on the inner side wall of the groove structure of the lower shell component or used for passing through a connecting lead between the coil component and the circuit board.
In one embodiment, the magnetic sheet assembly further comprises a limiting magnet, and the limiting magnet is arranged in the middle of the annular structure of the magnetic sheet assembly.
In one embodiment, the spacing magnet is secured between the lower surface of the upper housing component and the bottom of the groove structure of the lower housing component.
In one embodiment, the magnetic sheet assembly further comprises a heat dissipation ring, and the heat dissipation ring is nested between the magnetic sheet assembly and the limiting magnet.
In one embodiment, a heat dissipating ring is secured between the lower surface of the upper housing component and the bottom of the groove structure of the lower housing component.
Drawings
The drawings that accompany the detailed description can be briefly described as follows.
Fig. 1 is a schematic view of a wireless charger and an electronic device provided in an embodiment of the present application;
fig. 2 is a schematic top view of a wireless charger provided in an embodiment of the present application;
fig. 3 is an exploded view of a wireless charger provided in an embodiment of the present application;
fig. 4 is a schematic cross-sectional view of a wireless charger provided in an embodiment of the present application;
fig. 5 is a schematic diagram of a groove structure of a lower housing assembly of a wireless charger provided in an embodiment of the present application;
fig. 6 is a schematic top view of a lower housing assembly of a wireless charger provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of an upper housing assembly of a wireless charger provided in an embodiment of the present application;
fig. 8 is a schematic structural diagram of a magnetic sheet coil of a wireless charger provided in an embodiment of the present application;
fig. 9 is a schematic cross-sectional view illustrating a magnetic sheet coil of a wireless charger according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of an electronic device and a wireless charger thereof provided in an embodiment of the present application;
fig. 11 is a schematic structural diagram of a limiting magnet of a wireless charger provided in an embodiment of the present application;
fig. 12 is a schematic view of another configuration of a position limiting magnet of a wireless charger provided in an embodiment of the present application;
fig. 13 is a schematic structural diagram of another limiting magnet of a wireless charger provided in an embodiment of the present application;
fig. 14 is a schematic view illustrating a positional relationship among a magnetic sheet coil, a limit magnet, and a heat dissipating ring of a wireless charger according to an embodiment of the present application;
fig. 15 is a schematic view showing a positional relationship among a magnetic sheet coil, a limit magnet and a heat dissipating ring of another wireless charger provided in the embodiment of the present application;
fig. 16 is a schematic view showing a positional relationship among a magnetic sheet coil, a limit magnet and a heat dissipating ring of another wireless charger provided in the embodiment of the present application;
fig. 17 is a schematic view of a limiting magnet and shield assembly of a wireless charger provided in an embodiment of the present application;
fig. 18 is a schematic view of the combination of 18 kinds of limit magnets 230, a shield assembly 280, and a thermally conductive gel provided in the embodiments of the present application;
fig. 19 is a schematic diagram of heat transfer of heat-generating components such as magnetic sheet coils and limiting magnets of the wireless charger provided in the embodiment of the present application;
fig. 20 is a schematic diagram of heat transfer of the electronic device provided in the embodiment of the present application and disposed in the wireless charger.
Detailed Description
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.
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 orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application.
In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, an interference connection, or an integral connection; the specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In the embodiments of the present application, "contact" or "coupling" may refer to direct contact between components, or may refer to contact between components through an adhesive or a thermally conductive adhesive.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
Fig. 1 is a schematic view of a charging scenario in which a charger and an electronic device provided in an embodiment of the present application are charged. The electronic device 100 may be an electronic watch, a smart phone, a wireless headset, a tablet computer, a notebook computer, or the like. The wireless charger 200 may be a portable wireless charger, an in-vehicle wireless charger, or the like. When wirelessly charging, the electronic device 100 may be disposed 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 the electric energy into a wireless power signal. After receiving the wireless power signal, the electronic device 100 converts the wireless power signal into electrical energy to supply power to the electronic device 100.
In the embodiment of the present application, the "upper surface" refers to a surface of the wireless charger 200 facing away from the desktop when the wireless charger 200 is disposed on the desktop. The upper surface of the wireless charger 200 may be a substrate for carrying the electronic device 100, may be a housing of the wireless charger 200, and other structural members. In the embodiment of the present application, the surface may be a plane or a curved surface. By analogy, the upper surfaces of the components in the wireless charger 200 refer to the surfaces of the components on the side facing away from the desktop. "lower surface" refers to the surface opposite the "upper surface". In the embodiment of the present application, "upward" refers to a direction from the wireless charger 200 to the electronic device 100 during wireless charging. "downwardly" refers to the direction opposite to "upwardly".
Fig. 2-4 are schematic diagrams of a wireless charger provided in an embodiment of the present application. As shown in fig. 2-4, the wireless charger 200 is cylindrical in shape. In other embodiments, the wireless charger 200 may also be in the shape of an oval cylinder, a polygonal cylinder, or other shapes.
As shown in fig. 3, the wireless charger 200 includes an upper case assembly 210, a magnetic sheet coil 220, a position limiting magnet 230, a heat dissipation ring 240, a lower case assembly 250, a circuit board 260, and a cable 270. Wherein, the upper housing assembly 210 is coupled with the lower housing assembly 250 to form an outer shell of the wireless charger 200. The upper surface of the lower housing assembly 250 is provided with a groove structure. After the groove structures of the upper housing assembly 210 and the lower housing assembly 250 are coupled, a cavity structure is formed between the upper housing assembly 210 and the lower housing assembly 250. The cavity structure is used to receive the magnetic sheet coil 220, the position limiting magnet 230, the heat dissipating ring 240 and the circuit board 260. The lower housing assembly 250 is provided with through holes to allow the cables 270 to enter the cavity structure. The cable 270 is electrically connected to the circuit board 260.
As shown in fig. 3, the upper case assembly 210, the position limiting magnet 230, and the lower case assembly 250 have circular top views, and the disk coil 220 and the heat dissipation ring 240 have circular top views. In the present 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 a cylinder, and the lower housing assembly 250 is a cylinder. The shapes of the upper case assembly 210, the magnetic sheet coil 220, the position limiting magnet 230, the heat dissipation ring 240, and the lower case assembly 250 may be other shapes.
The upper surface of the lower housing assembly 250 is provided with a groove structure. The upper housing member 210 is coupled at the outlet of the groove structure of the lower housing member 250, and a cavity structure is formed between the upper housing member 210 and the lower housing member 250. The cavity structure is used for accommodating the magnetic sheet coil 220, the limit magnet 230, the heat dissipation ring 240, the circuit board 260 and other components.
As shown in fig. 3, the groove structure of the lower housing assembly 250 has a circular shape in plan view. In other embodiments, the top view shape of the groove structure of the lower housing assembly 250 may also be rectangular, oval, polygonal, and other shapes. The radius of the groove structure of the lower housing member 250 is equal to or slightly greater than the radius of the upper housing member 210. The upper housing component 210 is disposed at an outlet of the groove structure of the lower housing component 250, the upper housing component 210 is embedded in the groove structure of the lower housing component 250, and an upper surface of the upper housing component 210 and an upper surface of the lower housing component 250 are located on a same plane.
In one embodiment, the lower housing assembly 250 includes side plates and a bottom plate. In the embodiment of the present application, the wireless charger 200 is shaped like a cylinder, the side plates of the lower housing assembly 250 are shaped like a circular cylinder, and the bottom plate of the lower housing assembly 250 is shaped like a circular flat plate. In other embodiments, the bottom plate of the lower housing assembly 250 has the same shape as the upper housing assembly 210.
In the assembly process, the bottom plate of the lower case assembly 250 is fixed to the port of the side plate side of the lower case assembly 250, constituting the lower case assembly 250 having a groove structure. The upper case assembly 210 is fixed to the port of the other side of the side plate of the lower case assembly 250, and the upper case assembly 210, the side plate of the lower case assembly 250, and the bottom plate of the lower case assembly 250 constitute a cavity structure. In the embodiment of the application, the lower shell assembly 250 is divided into the bottom plate and the side plate, so that the two parts can be divided into two parts for manufacturing, and the manufacturing difficulty of the lower shell assembly 250 is reduced.
Fig. 5-6 are schematic views of a lower housing assembly of a wireless charger provided in an embodiment of the present application. The groove structure of the lower case assembly 250 of the wireless charger 200 provided in the embodiment of the present application is provided with a plurality of support planes for supporting a plurality of components of the upper case assembly 210, the magnetic sheet coil 220, the position limiting magnet 230, the heat dissipating ring 240, or the circuit board 260, respectively.
The upper case assembly 210, the magnetic sheet coil 220, the position limiting magnet 230, the heat dissipating ring 240, or the circuit board 260 are in contact with the plurality of support planes of the lower case assembly 250, respectively, and are transferred to the gas outside the wireless charger 200 through the lower case assembly 250, thereby improving the heat dissipating capability of the wireless charger 200.
As shown in fig. 5, the inner sidewall of the groove structure of the lower housing assembly 250 is provided with an upper housing supporting plane 251. The upper housing support flat 251 is adjacent to the upper surface of the lower housing assembly 250, adjacent to the opening of the groove structure of the lower housing assembly 250. The upper housing supporting plane 251 is used to support the upper housing assembly 210.
In the present embodiment, the depth of the upper housing supporting plane 251 refers to a distance between the upper housing supporting plane 251 and the upper surface of the lower housing assembly 250.
In one 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 on the same plane.
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. Accordingly, an adhesive may be added between the upper housing member 210 and the upper housing support plane 251, and the upper surface of the upper housing member 210 and the upper surface of the lower housing member 250 are located on the same plane. The upper surface of the upper housing assembly 210 and the upper surface of the lower housing assembly 250 are on the same plane, so that the upper surface of the wireless charger 200 is flat, which is beneficial for the upper surface of the wireless charger 200 to support the electronic device.
In the present embodiment, the width of the upper casing supporting plane 251 refers to a difference between an inside radius and an outside radius of the upper casing supporting plane 251. In one embodiment, the inner radius of the upper housing support plane 251 is less 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 supporting plane 251 supports the upper housing assembly 210. In one embodiment, the inner radius of the upper case supporting plane 251 is greater than the outer radius of the sheet coil 220. The disk coil 220 is disposed in a groove structure of the lower case assembly 250, and the disk coil 220 may pass through the upper case support plane 251.
As shown in fig. 5, the groove structure of the lower housing assembly 250 may further be provided with a coil support plane 252. The coil support plane 252 is used to support the disk coil 220. The coil support plane 252 is located between the upper housing support plane 251 and the bottom of the groove structure of the lower housing assembly 250. The coil support plane 252 supports the magnetic sheet coil 220, and a gap between the bottom of the groove structure of the lower case assembly 250 and the magnetic sheet coil 220 is used to receive the circuit board 260.
In the present 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 disk coil 220 and the thickness of the upper housing assembly 210.
In one embodiment, the distance between the coil support plane 252 and the upper case support plane 251 is slightly greater than the thickness of the magnetic sheet coil 220. The upper case assembly 210 and the magnetic sheet coil 220 are disposed in a groove structure of the lower case assembly 250, and a gap is formed between the upper case assembly 210 and the magnetic sheet coil 220. There is the space between upper housing assembly 210 and magnetic sheet coil 220 and can fill the thermal conductivity colloid, and upper housing assembly 210, magnetic sheet coil 220 and coil support plane 252 can constitute vertical limit structure. In addition, the upper surface of the upper case assembly 210 is deformed by an external force, and the deformation of the upper case assembly 210 does not press the magnetic sheet coil 220, thereby preventing the magnetic sheet coil 220 from being damaged.
In one embodiment, the distance between the coil support plane 252 and the upper case support plane 251 is equal to the thickness of the disk coil 220. Accordingly, the upper housing assembly 210, the pole piece coil 220 and the coil support plane 252 may constitute a longitudinal restraining structure.
As shown in fig. 6, the coil support plane 252 has a fan-ring shape in plan view. In one embodiment, the coil support plane 252 corresponds to a fan angle greater than or equal to 180 °.
In the present embodiment, the width of the coil support plane 252 refers to the difference between the inside radius and the outside radius of the coil support plane 252. The outside radius of the pole piece coil 220 is greater than or equal to the inside radius of the coil support plane 252. In one embodiment, the outside radius of the coil support plane 252 is equal to the inside radius of the upper housing support plane 251. In one embodiment, the inner radius of the coil support flat 252 is greater than the outer radius of the heat sink ring 240, the outer radius of the heat sink ring 240 is not greater than the inner radius of the disk coil 220, and the heat sink ring 240 may pass through the disk coil 220, the coil support flat 252. The disk coil 220 is nested within the heat sink ring 240.
As shown in fig. 6, the coil support plane 252 is formed of a fence-shaped support. The fence-shaped supporting body is disposed at the bottom of the groove structure of the lower housing assembly 250, and the upper surface of the fence-shaped supporting body is a coil supporting plane 252. The fence-shaped supporting body is fixedly connected with the bottom and the inner side wall of the groove structure of the lower shell component 250. In one embodiment, the lower housing assembly 250 includes a fence-shaped support including an arc fence and a plurality of column fences. The arc fence is fixed at the bottom of the groove structure of the lower housing assembly 250, and the arc fence is parallel to the inner side wall of the groove structure of the lower housing assembly 250. A plurality of cylindrical fences are secured to the bottom of the recessed configuration of the lower housing assembly 250. Each of the cylindrical fences is connected between the inner sidewall of the groove structure of the lower housing assembly 250 and the arc fence. The plurality of cylindrical fences provide radial supporting force for the arc-shaped fences. The heat dissipating ring 240 is installed in the groove structure of the lower housing assembly 250, and the coil supporting plane 252 is supported by the radial supporting force provided by the plurality of cylindrical barriers, so that the position of the coil supporting plane 252 is not changed by the pressing of the heat dissipating ring 240.
In one embodiment, the height of the arc-shaped fences and the height of the column-shaped fences of the fence-shaped support are the same so that the support planes of the coil support planes 252 lie on one plane. The disk coil 220 is disposed on the coil support plane 252 to prevent damage to the disk coil 220 due to uneven stress.
In one embodiment, a plurality of cylindrical fences may be equally spaced between the inner sidewall of the groove structure of the lower housing assembly 250 and the arcuate fences. In other embodiments, the plurality of cylindrical fences may be disposed between the inner sidewall of the groove structure of the lower housing assembly 250 and the arc-shaped fence in other arrangements.
In one embodiment, a plurality of cylindrical bars are separated from each other, and a space is formed between the cylindrical bars, the arc-shaped bars and the inner side wall of the groove structure of the lower housing assembly 250 for the heat conductive adhesive. Accordingly, heat generated from the magnetic sheet coil 220 may be transferred to the lower case assembly 250 through the fence-shaped support of the coil support plane 252, and may also be transferred to the lower case assembly 250 through the thermal conductive paste, thereby improving the heat dissipation capability of the wireless charger 200.
The coil supporting plane 252 of the wireless charger 200 provided by the embodiment of the present application is formed by a fence-shaped supporting body, which can reduce the material for manufacturing the lower housing assembly 250, and reduce the cost and weight of the wireless charger 200. In addition, the coil supporting plane 252 is formed by a fence-shaped supporting body, which can prevent the lower surface of the lower housing assembly 250 from forming a watermark, and avoid affecting the appearance of the wireless charger 200.
In the present embodiment, the wireless charger 200 may further include a position limiting magnet 230 and/or a heat dissipating ring 240. As shown in fig. 5, the groove structure of the lower housing assembly 250 may further be provided with a magnet support plane 253. In the embodiment of the present application, the middle region of the bottom surface of the groove structure of the lower housing assembly 250 may serve as a support plane for the position-limiting magnet 230 and/or the heat-dissipating ring 240, which is hereinafter referred to as a magnet support plane 253.
In the present 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 planar, and the depth of the magnet support plane 253 is greater than the sum of the height of the position limiting magnet 230 and the thickness of the upper housing assembly 210. 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 position limiting magnet 230, the thickness of the upper housing assembly 210, and the height of the raised structure of the lower surface of the upper housing assembly 210.
In one embodiment, the lower surface of the upper housing assembly 210 is planar, and the depth of the magnet support plane 253 is greater than the sum of the height of the heat dissipating ring 240 and the thickness of the upper housing assembly 210.
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 sink ring 240, the thickness of the upper housing assembly 210, and the height of the raised structure of the lower surface of the upper housing assembly 210.
In other embodiments, the height of the position limiting magnet 230 is different from the height of the heat dissipating ring 240, and the depth of the portion of the magnet support plane 253 supporting the position limiting magnet 230 may be different from the depth of the portion supporting the heat dissipating ring 240.
In the embodiment of the present application, the position-limiting magnet 230 has a cylindrical structure, and the magnetic sheet coil 240 has an annular structure. The disk coil 240 is disposed on a coil support plane 252. The limiting magnet 230 is disposed on the magnet support plane 253. At least a portion of the position-limiting magnet 253 passes through the annular configuration of the pole piece coil 240.
In one embodiment, the position limiting magnet 230 and the heat dissipating ring 240 are mounted in a groove structure of the lower housing assembly 250, a gap exists between the upper housing assembly 210 and the position limiting magnet 230, and a gap exists between the upper housing assembly 210 and the heat dissipating ring 240. The upper surface of the upper housing assembly 210 is deformed by an external force, and the deformation of the upper housing assembly 210 does not press the limiting magnet 230 and the heat dissipating ring 240, thereby preventing the limiting magnet 230 and the heat dissipating ring 240 from being damaged. In one embodiment, the gap between the upper housing assembly 210 and the position limiting magnet 230 and the gap between the upper housing assembly 210 and the heat dissipating ring 240 may be filled with a thermal conductive gel, so as to improve the heat dissipating efficiency of the wireless charger 200.
As shown in fig. 7, the magnet support plane 253 is provided with a spacer plate 254 for defining the positions of the position restricting magnet 230 and the heat dissipating ring 240. In one embodiment, the position limiting magnet 230 is disposed on the magnet support plane 253, and the position limiting magnet 230 is located inside the isolation plate 254. In one embodiment, the heat dissipating 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 is disposed between the position-limiting magnet 230 and the heat dissipation ring 240, so that the limit magnet 230 is prevented from being damaged by the extrusion force generated by the heat dissipation ring 240 due to the increase in volume of the heat dissipation ring 240 after absorbing heat.
In the embodiment 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 may be other shapes such as an oval shape, a polygon shape, and the like, and the present application is not limited thereto. In one embodiment, the top view of the position limiting magnet 230 is circular, the top view of the heat dissipating ring 240 is circular, and the top view of the isolation plate 254 is circular. The inside radius of the isolation plate 254 is greater than or equal to the radius of the position limiting magnet 230, and the outside radius of the isolation plate 254 is less than or equal to the inside radius of the heat dissipation ring 240. In one embodiment, the magnet support plane 253 is provided with an annular protrusion 254 to isolate the position limiting magnet 230 from the heat sink ring 240. In one embodiment, the magnet support plane 253 is provided with an annular isolation plate 254 for isolating the position limiting magnet 230 from the heat sink ring 240.
As shown in fig. 4, a receiving cavity is formed among the magnetic sheet coil 220, the bottom of the groove structure of the lower case assembly 250, the inner sidewall of the groove structure of the lower case assembly 250, and the heat dissipation ring 240, and is used for receiving the circuit board 260 and the cable 270. In the present application, the planar shape of the housing cavity and the planar shape of the coil support plane 252 form a single circular ring.
The bottom of the groove structure of the lower housing member 250 constitutes a part of the receiving cavity, i.e., the circuit board support plane 256. The circuit board support plane 256 is located at the bottom of the groove structure of the lower housing assembly 250 and at the edge of the bottom of the groove structure of the lower housing assembly 250. The circuit board support plane 256 is used to support the circuit board 260. As shown in fig. 6, the circuit board support plane 256 is at the bottom of the groove structure of the lower housing 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.
The inner sidewall of the groove structure of the lower housing assembly 250 corresponding to the receiving cavity is provided with a through hole 255. The bottom of the groove structure of the lower housing assembly 250 corresponding to the receiving cavity is provided with a wire guide 257. The lead grooves 257 communicate with the through holes 255. The conductive lines of the circuit board 260 are connected to an external circuit through the conductive grooves 257 and the through holes 255.
In the embodiment of the present application, the depth of the circuit board support plane 256 refers to the distance between the plane of the circuit board support plane 256 and the upper surface of the lower housing component 250. In one embodiment, the lower surface of the upper housing assembly 210 is planar 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 thickness of the magnetic sheet coil 220 and the thickness of the circuit board 260.
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 of the lower surface of the upper housing assembly 210, the thickness of the magnetic sheet coil 220 and the thickness of the circuit board 260.
In one embodiment, the depth of the circuit board support plane 256 and the depth of the magnet support plane 253 may not be the same.
In one embodiment, the difference in height 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. The circuit board 260 and the magnetic sheet coil 220 are respectively disposed behind the circuit board support plane 256 and the coil support plane 252, and a gap is formed between the circuit board 260 and the magnetic sheet coil 220, thereby preventing the circuit board 260 from being damaged by a pressing force generated by the magnetic sheet coil 220.
As shown in fig. 6, the lower housing assembly 250 is provided with a through hole 255. The cable 270 may pass through the through hole 255 into the groove structure of the lower housing assembly 250. The cable 270 may 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 groove structure of the lower housing assembly 250, and is located on the portion of the inner sidewall of the groove structure of the lower housing assembly 250, which forms the receiving cavity. In other embodiments, the shape of the through hole 255 may be circular, oval or other shapes, and the present application is not limited thereto.
As shown in fig. 6, the circuit board support plane 256 is provided with wire guides 257. In this application, the through hole 255 is located at the bottom of the groove structure of the lower housing assembly 250, and the groove structure of the lower housing assembly 250 forms a part of the receiving cavity. The wire guide 257 is connected to the through hole 255, and the wires of the circuit board 260 are connected to an external circuit through the wire guide 257 and the through hole 255. Typically, circuit board 260 is a separate component. The circuit board 260 is electrically connected to the cable 270, and the cable 270 is soldered to the surface of the circuit board 260 at the end points, which may cause the surface of the circuit board 260 to have bumps. The circuit board 260 is disposed on the circuit board support plane 256, and the bumps of the circuit board 260 and the cables 270 are recessed into the wire guides 257 to better dispose the circuit board 260 on the circuit board support plane 256.
In one embodiment, the center of the through hole 255 is aligned with the center of the wire guide 257. In one embodiment, the center of the through hole 255 is not aligned with the center of the wire guide 257, and the cable 270 is bent to dispose the circuit board 260 on the circuit board support plane 256. The cable 270 is easily broken after being bent, and the reliability of the wireless charger 200 is lowered. Of course, the center of the through hole 255 is not aligned with the center of the wire guide 257, and the distance between the extended center line of the through hole 255 and the extended center line of the wire guide 257 may be smaller than the set threshold. The set threshold is the maximum range at which the cable 270 is not easily broken.
In the present embodiment, the lower housing assembly 250 is provided with an upper housing support plane 251, a coil support plane 252, a magnet support plane 253, a circuit board support plane 256, and the like. The upper housing support plane 251 supports the upper housing assembly 210. The coil support plane 252 supports the disk coil 220. Magnet support plane 253 supports position-defining magnet 230 and heat-dissipating ring 240. The circuit board support plane 256 supports the circuit board 260. The multiple support planes of the wireless charger 200 support the various components in different positions, avoiding the components from stacking together. If the wireless charger 200 is subjected to an external force, the components stacked together may be completely damaged, thereby reducing the reliability of the wireless charger 200.
The disk coil 220 and the heat dissipating ring 240 have circular shapes in plan view, and the stopper magnet 230 has a circular shape in plan view. 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, so that the integration level of each component is improved, and the miniaturization of the wireless charger 200 is facilitated. Accordingly, the inner sidewall of the groove structure of the lower case assembly 250 and the heat dissipation ring 240 constitute a lateral limit structure of the magnetic sheet coil 220, which can improve the structural stability of the wireless charger 200.
Fig. 7 is a schematic structural diagram of an upper housing assembly of a wireless charger provided in an embodiment of the present application. The upper housing assembly 210 is part of the housing of the wireless charger 200. During the wireless charging process, the upper surface of the upper housing assembly 210 contacts the lower surface of the electronic device 100. In the embodiment of the present application, the top view shape of the upper housing assembly 210 is related to the shape of the wireless charger 200. In one embodiment, the wireless charger 200 is cylindrical in shape and the upper housing assembly 210 is circular in top view.
As shown in fig. 7, the periphery of the upper surface of the upper housing assembly 210 is a plane, and a groove structure 211 is disposed in the middle of the upper surface of the upper housing assembly 210. The recess structure 211 of the upper housing assembly 210 serves to support the electronic device 100 and to restrict the position of the electronic device 100. The bottom of the groove structure 211 of the upper housing assembly 210 is a flat surface.
The electronic device 100 is disposed 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, so that the distance between the wireless charging coil of the electronic device 100 and the coil assembly 222 of the wireless charger 200 can be reduced, and the loss of electric energy of the wireless charger can be reduced. In other embodiments, the upper surface of the upper housing component 210 may be planar in shape.
As shown in fig. 7, the groove structure 211 of the upper housing member 210 has a truncated cone shape. In one embodiment, the groove structure of the upper housing assembly 210 is shaped as a frustoconical cylinder. The radius of the bottom of the groove structure 211 of the upper housing member 210 is smaller than the radius of the opening of the groove structure 211 of the upper housing member 210. In other embodiments, the shape of the groove structure 211 of the upper housing component 210 can also be other shapes such as a cylinder, a rectangular parallelepiped, etc., and the present application is not limited thereto.
The upper surface of the upper shell assembly 210 of the wireless charger 200 provided by the embodiment of the application is provided with the groove structure 211, and the groove structure 211 on the upper surface of the upper shell assembly 210 can be coupled with the protruding structure of the electronic device 100, so that the distance between the electronic device 100 and the wireless charger 200 can be shortened, and the electric energy loss of wireless charging is reduced. In addition, the groove structure 211 is disposed on the upper surface of the upper housing assembly 210, so that the surface area of the upper surface of the wireless charger 200 can be increased, the contact area between the wireless charger 200 and the electronic device 100 can be increased, and the heat dissipation efficiency of the wireless charger 200 can be improved.
Also, the electronic device 100 is disposed on the upper surface of the upper housing assembly 210 of the wireless charger 200 during the wireless charging process. The convex structure of the electronic device 100 is embedded in the concave structure 211 of the upper housing member 210, and the convex structure of the electronic device 100 can be in contact with the concave structure 211 of the upper housing member 210. The periphery of the upper surface of the upper housing assembly 210 contacts the lower surface of the electronic device 100. The heat of the electronic device 100 is transferred to the housing of the wireless charger 200, so that the heat dissipation area of the electronic device 100 is increased, and the temperature of the electronic device 100 can be rapidly lowered.
As shown in fig. 7, the lower surface of the upper housing component 210 may also be provided with a boss-shaped protrusion 212. The lower surface of the upper housing member 210 refers to a surface of the upper housing member 210 constituting a cavity structure. In other embodiments, the shape of the protruding structure 212 of the upper housing assembly 210 may also be other shapes such as a cylinder, a rectangular parallelepiped, and the like, which is not limited herein.
In one embodiment, the protrusion 212 is disposed at a middle position of the lower surface of the upper housing component 210. The upper housing assembly 210 and the lower housing assembly 250 constitute a cavity structure, and the top of the projection structure 22212 of the upper housing assembly 210 is coupled to at least one of the position-limiting magnet 230 and the heat-dissipating ring 240.
In one embodiment, the material of the upper housing assembly is a highly thermally conductive material. The top of the protrusion structure 212 of the upper case assembly 210 is coupled with at least one of the position limiting magnet 230 and the heat dissipation ring 240, and the upper case assembly 210 conducts heat of the electronic device 100 to the lower case assembly 250 through the heat dissipation ring 240 and the position limiting magnet 230.
In one embodiment, the raised structure 212 of the upper housing assembly 210 is shaped as a frustoconical cylinder. The radius of the bottom of the raised structure 212 of the upper housing assembly 210 is greater than the radius of the top of the raised structure 212 of the upper housing assembly 210.
In one embodiment, the top of the raised structure 212 of the upper housing assembly 210 is circular in shape when viewed from above. The heat dissipating ring 240 has a circular ring shape in plan view. The radius of the top of the raised structure 212 of the upper housing assembly 210 is greater than or equal to the outside radius of the heat dissipating ring 240.
In one embodiment, the bottom of the raised structure 212 of the upper housing component 210 is circular in top view. The disk coil 220 has a circular shape in plan view. The radius of the bottom of the protrusion structure 212 of the upper case assembly 210 is smaller than the inner radius of the pole piece coil 220.
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 position-limiting magnet 230. Alternatively, the thickness of the upper case assembly 210 is less than the difference between the depth of the groove structure of the lower case assembly 250 and the height of the heat dissipation ring 240.
As shown in fig. 7, the lower surface of the upper housing member 210 is also provided with an annular groove 213. The annular groove 213 is located around the protrusion 212 of the upper housing component 210 for nesting the disk coil 220. The lower surface of the annular groove of the upper case assembly 210 is coupled with the upper surface of the disk coil 220. The upper surface of the disk coil 220 is a surface of the disk coil 220 adjacent to the upper case assembly 210.
In one embodiment, the annular recess 213 of the upper housing assembly 210 is circular in plan view. The disk coil 220 has a circular shape in plan view. The outer radius of the annular groove 213 of the upper case assembly 210 is greater than that of the disk coil 220. The inner radius of the annular groove 213 of the upper case assembly 210 is smaller than that of the disk coil 220.
In one embodiment, the height of the housing assembly on the inside of the annular groove 213 of the upper housing assembly 210 is greater than the height of the housing assembly on the outside of the annular groove 213 of the upper housing assembly 210.
The disk coil 220 is for converting electrical energy into a wireless power signal. The magnetic sheet coil 220 is mounted on a coil support plane 252 of a lower housing assembly 250. In the wireless charging process, the magnetic sheet coil 220 converts the electric energy into a wireless power signal, and then the wireless power signal is radiated along the set direction.
Fig. 8 is a schematic structural diagram of a magnetic sheet coil of a wireless charger provided in an embodiment of the present application. As shown in fig. 8, the magnetic sheet coil 220 includes a magnetic sheet assembly 221 and a coil assembly 222. In the embodiment, the magnetic sheet assembly 221 is in the shape of a circular cylinder. The magnetic sheet assembly 221 has an annular groove formed in an upper surface thereof for receiving the coil assembly 222. The opening of the annular groove is directed towards the upper housing component 210.
As shown in fig. 8, the annular groove of the magnet sheet assembly 221 has a circular shape in plan view. The coil assembly 222 is disposed in an annular groove of the magnetic sheet assembly 221. The coil assembly 222 has a circular ring shape in plan view. In the present embodiment, the top view of the magnet sheet assembly 221, the annular groove, and the coil assembly 222 has a circular shape concentric with a circle.
In the assembly process of the magnetic sheet coil 220, the coil assembly 222 is bent in the shape of an 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 assembly worker adds an adhesive or a thermal conductive adhesive into the annular groove of the magnet sheet assembly 221 to fix the coil assembly 222 in the annular groove of the magnet sheet assembly 221. In the embodiment of the present application, the coil assembly 222 is fixed in the annular groove of the magnetic sheet assembly 221, so that it is possible to prevent the shape and position of the coil assembly 222 from changing, which may cause the position and charging power of the wireless charger 200 to change, and reduce the stability of the wireless charger 200.
In the embodiment, the magnetic sheet assembly 221 is made of a magnetic material with low electrical conductivity. The coil assembly 222 is disposed in the annular groove of the magnetic sheet assembly 221, and the magnetic sheet assembly 221 may shield a wireless power signal radiated from the coil assembly 222 to a central region, thereby preventing the limit magnet 240 disposed in the middle of the annular structure of the magnetic sheet coil 220 from generating an eddy current, which may 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.
In one embodiment, the inner radius of the magnet sheet assembly 221 is greater than or equal to the outer radius of the heat dissipation ring 240 such that the heat dissipation ring 240 can be mounted on the magnet support flat 253 through the magnet sheet assembly 221.
In one embodiment, the inner radius of the magnet sheet assembly 221 is equal to or greater than the radius of the protrusion structure 213 of the upper case assembly 210, so that the protrusion structure 213 of the upper case assembly 210 can contact the position-limiting magnet 230 and the heat dissipation ring 240.
In one embodiment, an outer radius of the magnetic sheet assembly 221 is equal to or less than an outer radius of the coil supporting plane 252 of the lower housing assembly 250, so that the magnetic sheet assembly 221 may be disposed on the coil supporting plane 252 of the lower housing assembly 250.
In one embodiment, the thickness of the magnetic sheet assembly 221 is equal to or less than the distance between the upper case supporting plane 251 and the coil supporting plane 252 of the lower case assembly 250, so that the magnetic sheet assembly 221 is disposed in the coil supporting plane 252 of the lower case assembly 250 to prevent the upper case assembly 210 from being fixed on the upper case supporting plane 251 of the lower case assembly 250.
In the embodiment of the present application, the top-view cross-sectional area of the opening of the annular groove of the magnet sheet assembly 221 is smaller than the top-view cross-sectional area of the bottom of the annular groove of the magnet sheet assembly 221. Alternatively, the plan sectional area of the opening of the annular groove of the magnet piece assembly 221 is smaller than the plan sectional area of an arbitrary position between the opening of the annular groove of the magnet piece assembly 221 and the bottom of the annular groove of the magnet piece assembly 221.
As shown in fig. 9, the outer side wall surface and the inner side wall surface of the annular groove of the magnet sheet assembly 221 are inclined surfaces, so that the annular groove of the magnet sheet assembly 221 is shaped as a circular truncated cone 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 wraps the coil assembly 222 as much as possible. The magnetic sheet coil 220 is installed in the cordless charger 200 with the opening of the annular groove of the magnetic sheet assembly 221 facing the upper case assembly 210. When the wireless charger 200 performs wireless charging, the wireless power signal generated by the coil assembly 222 only radiates the wireless power signal in the direction of the electronic device 100, thereby increasing the power conversion rate of the wireless charger 200.
In other embodiments, the annular groove of the magnet sheet assembly 221 may be shaped as a circular cylinder, or other shapes. When the annular groove of the magnetic sheet assembly 221 is a circular cylinder, the outer sidewall surface of the annular groove of the magnetic sheet assembly 221 is parallel to the outer sidewall surface of the magnetic sheet assembly 221, and the inner sidewall surface of the annular groove of the magnetic sheet assembly 221 is parallel to the inner sidewall surface of the magnetic sheet assembly 221.
Illustratively, the electronic device 100 is an electronic watch. The middle region of the charging coil of the electronic device 100 is generally mounted with components such as a heart rate detection module and a temperature detection module. When the electronic device 100 is wirelessly charged, components such as the heart rate detection module and the temperature detection module are located in the middle area of the coil assembly 222 of the wireless charger 200. The annular groove of magnetic sheet coil 220 in wireless charger 200 that this application embodiment provided can wrap up coil pack 22, and restriction coil pack 222 radiates the direction of wireless power signal, avoids the vortex that coil pack 222 produced to electronic equipment 100 components and parts influences such as rate of centers detection module, temperature detection module.
As shown in fig. 8, the disk assembly 221 and the annular groove of the disk assembly 221 have a circular shape in plan view. In one embodiment, the ratio between the outside radius and the inside radius of the annular groove of the magnet sheet assembly 221 is greater than 1.9. In one embodiment, the ratio between the outside radius and the inside radius of the annular groove of the magnet sheet assembly 221 is greater than 1.7. In the wireless charger 200 according to the embodiment of the present application, the smaller the comparison between the inside radius and the outside radius of the annular groove of the magnet sheet assembly 221 is, the wider the planar shape of the annular groove of the magnet sheet assembly 221 is, the larger the planar shape of the coil assembly 222 housed in the annular groove of the magnet sheet assembly 221 is, and the larger the wireless charging area of the wireless charger 200 can be. After the width of the annular groove of the magnetic sheet assembly 221 is increased, the number of turns of the coil assembly 222 received in the annular groove of the magnetic sheet assembly 221 is increased, and thus the wireless charging power of the wireless charger 200 can be increased. The greater the depth of the annular groove of the magnetic sheet assembly 221, the more turns the annular groove of the magnetic sheet assembly 221 can accommodate the coil assembly 222, the higher the charging power of the wireless charger 200.
In one embodiment, the lower surface of the upper case assembly 210 is a plane, and the magnetic sheet assemblies 221 at both sides of the annular groove of the magnetic sheet assembly 221 may have the same height. The direction of the wireless power signal radiated outward from the magnetic sheet coil 220 is an upward direction perpendicular to the upper surface of the magnetic sheet coil 220.
In one embodiment, the protrusion 212 is formed on the lower surface of the upper housing assembly 210, and the heights of the magnetic sheet assemblies 221 on both sides of the annular groove of the magnetic sheet assembly 221 may be different. The height of the magnet sheet assembly 221 inside the annular groove of the magnet sheet assembly 221 is lower than the height of the magnet sheet assembly 221 outside the annular groove of the magnet sheet assembly 221. In other embodiments, the lower surface of the upper housing assembly 210 is provided with an annular groove 213. The annular recess 213 of the lower surface of the upper housing component 210 is located around the raised structure 212. In an assembly process, when the upper case assembly 210 is mounted on the upper case support plane 251, the magnetic sheet assembly 221 is embedded in the annular groove 213 of the lower surface of the upper case assembly 210. In this embodiment, the annular groove 213 is formed on the lower surface of the upper case assembly 210, so that the depth of the annular groove of the magnetic sheet assembly 221 can be increased, thereby increasing the charging power of the wireless charger 200.
As shown in fig. 8, the magnetic sheet assembly 221 is provided with a plurality of slits. Illustratively, the magnetic sheet assembly 221 is provided with a cutout 2211 and a cutout 2212. The cutouts 2211 are used to define the orientation in which the pole piece coils 220 are mounted in the coil support plane 252. In the embodiment of the present application, the magnetic sheet assembly 221 is a circular cylinder, and the slit 2211 is located on the magnetic sheet assembly 221 outside the annular groove. Accordingly, the outer side edge of the coil support plane 252 is provided with a protrusion. The convex shape of the coil support flat surface 252 matches the shape of the cutout 2211 of the magnetic sheet assembly 221. The magnetic disk coil 220 is mounted on the coil support plane 252 with the cutout 2211 of the magnetic disk assembly 221 coupled to the protrusion of the coil support plane 252. The cutout 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 prevent the magnetic sheet coil 220 from rotating in the wireless charger 2000. In other embodiments, the positioning portion 2211 provided on the magnetic sheet assembly 221 may have other structures, such as a protrusion structure, a snap, etc.
The gap 2212 is positioned on the magnetic sheet assembly 221 at the outer side of the annular groove. The circuit board 260 is generally located at the bottom of the magnetic sheet assembly 221 to prevent the coil assembly 222 from generating eddy currents on the circuit board 260. Both ends of the coil block 222 pass through the wire slots 2212 and are soldered to the ports of the circuit board 260 by solder. In other embodiments, the cutout 2212 is located on the inner disk assembly 221 of the annular groove. The gap 2211 and the gap 2212 may be the same gap.
In the embodiment of the present application, the magnetic sheet assembly 221 of the magnetic sheet coil 220 may replace the position-limiting magnet 230. In one embodiment, the position limiting magnet of the electronic device 100 has an N-pole facing up and an S-pole facing down, and after the magnetic sheet assembly 221 is magnetized, the N-pole facing up and the S-pole facing down of the magnetic sheet assembly 221 are set up. In one embodiment, the position limiting magnet of the electronic device 100 has an upward S-pole and a downward N-pole, and after the magnetic sheet assembly 221 is magnetized, the magnetic sheet assembly 221 has an upward S-pole and a downward N-pole. The electronic device 100 is disposed on the upper housing assembly 210 of the wireless charger 200, and the electronic device 100 is attached to the set position of the upper housing assembly 210 of the wireless charger 200 by the limitation of the limiting magnets of the electronic device 100 and the wireless charger 200.
Fig. 10 is a schematic structural diagram of an electronic device 100 and a wireless charger 200 thereof according to an embodiment of the present disclosure. The electronic device 100 may be a watch, a mobile phone, an earphone, a tablet, a computer, or the like. The charger 200 may be a portable wireless charger or an in-vehicle wireless charger, or the like. For convenience of describing the charging coil and the limiting magnet of the electronic device 100 or the charger 200, other circuits or structures of the electronic device 100 and the wireless charger 200 are omitted in fig. 10.
As shown in fig. 10, electronic device 100 includes wireless charging coil 110 and a spacing 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 disposed in an annular groove of the magnetic sheet assembly 221. The opening of the annular groove of the magnet sheet assembly 221 faces upward.
As shown in fig. 10, the wireless charger 200 is horizontally disposed on a desktop, and the electronic device 100 is stacked on the wireless charger 200. The position limiting magnet 120 of the electronic device 100 is matched with the magnetic sheet assembly 221 of the wireless charger 200, so that the electronic device 100 is limited 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 can be wirelessly charged after being matched.
Fig. 11 is a schematic structural diagram of a limiting magnet of a wireless charger provided in an embodiment of the present application. The limit magnet 230 of the wireless charger provided by the embodiment of the present application may be formed by an independent magnet, such as a cylindrical magnet, a circular cylindrical magnet, and the like. The position limiting magnet 230 may be a cylindrical magnet formed by a plurality of magnets, such as a cylindrical magnet spliced by a cylindrical magnet and a plurality of circular cylindrical magnets.
As shown in fig. 11, the position restricting magnet 230 includes a first magnet 231 and a second magnet 232. The first magnet 231 and the second magnet 232 are adjacently disposed on the same surface. The first magnet 231 has a cylindrical structure, and the first magnet 231 has a circular cross section in a plan view. The second magnet 232 is an annular cylindrical structure, and the shape of the top cross section of the second magnet 232 is a circular ring. The inner 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 disposed inside the second magnet 232.
In the embodiment of the present application, if the N pole of the first magnet 231 faces upward, the S pole faces downward. The second magnet 232 has its north pole facing the inside of the ring and its south pole facing the outside of the ring. The magnetic fields of the first magnet 231 and the second magnet 232 are mutually enhanced on the upper side of the limiting magnet 230, the magnetic attraction between the upper side of the wireless charger 200 and the lower side of the electronic device 100 is enhanced, the contact position of the electronic device 100 and the wireless charger 200 can be better defined, the charging coil of the electronic device 100 and the charging coil of the wireless charger 200 are conveniently matched with each other, and therefore the convenience of wireless charging is improved. The magnetic fields of the first magnet 231 and the second magnet 232 are weakened mutually at the lower side of the limiting magnet 230, and the magnetic field strength at the lower side of the limiting magnet 230 is weakened, so that the influence of the limiting magnet 230 in the wireless charger 200 on other magnetically sensitive devices can be reduced, soft magnetic materials can be omitted or reduced, and the heat dissipation and miniaturization of the wireless charger 200 are facilitated.
As shown in fig. 12, the second magnet 232 includes a plurality of permanent magnet modules that are spliced to form an annular cylindrical structure. In the present embodiment, the shape of the top cross section of the plurality of permanent magnet modules in the second magnet 232 is an arc. The permanent magnet module can be a fan-shaped magnet with an angle of 360 degrees/M. M is the number of the permanent magnet modules spliced to form a circular permanent magnet, and is more than or equal to 2. In some embodiments, the shape of the top-view cross section of the permanent magnet module may also be a polygon such as a triangle, a quadrangle, or the like. The position limiting magnet 230 may select permanent magnet modules of various shapes according to the inner space of the charger 200, thereby improving the applicability of the position limiting magnet 230.
In some embodiments, the first magnet 231 of the position limiting magnet 230 may include a plurality of permanent magnet modules that are spliced into a cylindrical structure. In some embodiments, the second magnet 232 of the spacing magnet 230 may comprise only one annular, cylindrical permanent magnet module. In some embodiments, the first magnet 231 and the second magnet 232 of the spacing magnet 230 each include a plurality of permanent magnet modules. That is, the plurality of permanent magnets in the position limiting magnet 230 may include one or more permanent magnet modules, respectively.
In one embodiment, the direction of the magnetic field inside the first magnet 231 is perpendicular to the surface, and the direction of the magnetic field inside the second magnet 232 is parallel to the surface. The direction of the magnetic field inside the first magnet 231 is perpendicular to the direction of the magnetic field inside the second magnet 232.
In one embodiment, the direction of the magnetic field inside the first magnet 231 is parallel to the surface and the direction of the magnetic field inside the second magnet 232 is perpendicular to the surface. The direction of the magnetic field inside the first magnet 231 is perpendicular to the direction of the magnetic field inside the second magnet 232.
In one embodiment, the first magnet 231 has one of a circular and polygonal top cross-sectional shape, and the second magnet 232 has an annular top cross-sectional shape. The ring shape includes circular ring shape and polygonal ring shape.
In one embodiment, the first magnet 231 and the second magnet 232 are fixedly connected.
In one embodiment, the first magnet 231 and the second magnet 232 are each fixed to a surface.
Fig. 13 is a schematic structural diagram of a limiting magnet provided in an embodiment of the present application. As shown in fig. 13, the position restricting magnet 230 includes a first member 231 and a second member 232. The first and second members 231 and 232 are disposed on the same surface in the first direction. That is, the first and second modules 231 and 232 are disposed on the same surface in the horizontal direction. The first element 231 has a circular ring-shaped top cross section, and the second element 232 has a cylindrical structure. The inner radial dimension of first assembly 231 is greater than or equal to the radial dimension of second assembly 232. The second assembly 232 is disposed inside the first assembly 231. In one embodiment, the first member 231 and the second member 232 may be fixedly coupled to form a unitary structure. In other embodiments, the first member 231 and the second member 232 may be fixed to the same surface, respectively, and a gap or a filling material may exist between the first member 231 and the second member 232.
The first assembly 231 includes a first magnet 231-1 and a second magnet 231-2. The second assembly 232 includes a second assembly 232. The first and second magnets 231-1 and 231-2 are stacked in the second direction. That is, the first magnet 231-1 and the second magnet 231-2 are stacked perpendicular to the surface. The first magnet 231-1 and the second magnet 231-2 each have a circular cross-sectional shape in plan view. In one embodiment, the first magnet 231-1 and the second magnet 231-2 may be fixedly coupled to form an integral structure. In other embodiments, the first and second magnets 231-1 and 231-2 may be fixed on the sides of the second assembly 232, respectively, and a gap or a filling material may exist between the first and second magnets 231-1 and 231-2.
In the embodiment of the present application, the S pole of the first magnet 231-1 faces the inner side of the circular ring, and the N pole faces the outer side of the circular ring. The second magnet 231-2 has its N-pole facing the inside of the ring and S-pole facing the outside of the ring. The second element 232 has its south pole facing up and its north pole facing down. The S pole of the first magnet 231-1 and the S pole of the second component 232 are mutually enhanced at the upper side of the magnetic device 500, so that the magnetic field intensity at the upper side of the magnetic device 500 is enhanced.
In one embodiment, the number of magnets in the first assembly 231 may be two or more. The number of magnets in the second assembly 232 may be two or more.
In one embodiment, the direction of the magnetic field inside the magnets of the first assembly 231 is perpendicular to the surface and the direction of the magnetic field inside the magnets of the second assembly 232 is parallel to the surface. The direction of the magnetic field inside the magnet of the first assembly 231 is perpendicular to the direction of the magnetic field inside the magnet of the second assembly 232.
In one embodiment, the direction of the magnetic field inside the magnets of the first assembly 231 is parallel to the surface and the direction of the magnetic field inside the magnets of the second assembly 232 is perpendicular to the surface. The direction of the magnetic field inside the magnets of the first assembly 231 is perpendicular to the direction of the magnetic field inside the magnets of the second assembly 232.
In one embodiment, the top-view cross-sectional shape of the magnet of the first assembly 231 is one of circular and polygonal, and the top-view cross-sectional shape of the magnet of the second assembly 232 is annular. The ring shape includes circular ring shape and polygonal ring shape.
In one embodiment, there is a fixed connection between the magnets in the first assembly 231 and the magnets in the second assembly 232.
In one embodiment, the magnets in the first component 231 and the magnets in the second component 232 are each secured to a surface.
In one embodiment, the magnets in the first assembly 231 are assembled from one or more sub-magnet modules. The magnets in the second assembly 232 are assembled from one or more sub-magnet modules.
The positional relationship among the magnetic sheet coil 220, the position-limiting magnet 230, and the heat dissipation ring 240 in the wireless charger 200 according to the embodiment of the present application is not limited to the positional relationship shown in fig. 3, and may be other positional relationships. For example, fig. 14 to 16 are schematic diagrams illustrating a positional relationship among a magnetic sheet coil, a limit magnet, and a heat dissipation ring of a wireless charger provided in an embodiment of the present application.
As shown in fig. 14, the wireless charger 200 includes a magnetic sheet coil 220, a stopper magnet 230, and a heat dissipation ring 240. The disk coil 220 has a circular ring shape in plan view. The top view of the position limiting magnet 230 is circular. The heat dissipating ring 240 has a circular or circular ring shape in plan view. At this time, the outer radius of the magnetic sheet coil 220 is equal to or less than the inner radius of the coil support plane 252 of the lower case assembly 250. The outer radius of the position-limiting magnet 230 is less than or equal to the inner radius of the pole piece coil 220. The inner radius of the position-limiting magnet 230 is greater than or equal to the outer radius of the magnetic sheet coil 220. The height of the position limiting magnet 230 is the same as that of the heat dissipation ring 240, or the height of the position limiting magnet 230 is not the same as that of the heat dissipation ring 240.
The magnetic sheet coil 220 is disposed on a coil support plane 252 of the lower case assembly 250. The heat sink ring 240 is embedded in the annular structure of the disk coil 220 and is fixed to the magnet support plane 253 of the lower housing assembly 250. The position limiting magnet 230 is embedded in the heat dissipating ring 240 and fixed to the magnet supporting plane 253 of the lower housing assembly 250. Accordingly, the heat dissipation ring 240 is nested between the limiter magnet 230 and the disk coil 220. In one embodiment, the gaps between the heat dissipating ring 240, the position limiting magnet 230, and the magnetic sheet coil 220 may be filled with a heat conductive adhesive, so as to improve the heat dissipating efficiency of the wireless charger 200.
As shown in fig. 15, the wireless charger 200 includes a magnetic sheet coil 220, a position-restricting magnet 230, and a heat-dissipating ring 240. The disk coil 220 has a circular ring shape in plan view. The top view of the position limiting magnet 230 is circular. The heat dissipation ring 240 has a circular or circular ring shape in plan view. At this time, the outer radius of the magnet sheet coil 220 is equal to or less than the inner radius of the coil support plane 252 of the lower case assembly 250. The outer radius of the position-limiting magnet 230 is less than or equal to the inner radius of the pole piece coil 220. The inside radius of the position limiting magnet 230 is greater than or equal to the outside radius of the heat dissipating ring 240. The magnetic sheet coil 220 has the same height as the position-restricting magnet 230.
In the assembly process 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 position-limiting magnet 230 is embedded in the magnetic sheet coil 220 and fixed to the coil support plane 252 of the lower case assembly 250. The heat dissipation ring 240 is embedded in the position-limiting magnet 230 and fixed to the magnet support plane 253 of the lower case assembly 250.
As shown in fig. 16, the wireless charger 200 includes a magnetic sheet coil 220, a stopper magnet 230, and a heat dissipation ring 240. The disk coil 220 has a circular ring shape in plan view. The top view of the position limiting magnet 230 is circular. The heat dissipating ring 240 has a circular or circular ring shape in plan view. At this time, the outer radius of the position-restricting magnet 230 is equal to or less than 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 position-limiting magnet 230. The inner radius of the disk coil 220 is equal to or greater than the outer radius of the heat dissipating ring 240. The magnetic sheet coil 220 has the same height as the position-limiting magnet 230.
The wireless charger 200 is assembled by positioning the magnet 230 and securing it to the coil support surface 252 of the lower housing assembly 250. The disk coil 220 is embedded in the position-limiting magnet 230 and fixed to the coil support plane 252 of the lower case assembly 250. The heat dissipating ring 240 is embedded in the disk coil 220 and fixed to the magnet support plane 253 of the lower case assembly 250.
The circuit board 260 of the wireless charger 200 provided in the embodiment of the present application may include an ac/dc converter, a protection circuit, and other circuits. The ac/dc converter converts ac power to dc power or converts dc power to ac power. The protection circuit is configured to cause the wireless charger 200 to be in an open state when a short circuit occurs in the wireless charger 200. In the embodiment of the present application, 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 sheet coil 220. In the embodiment of the present application, the circuit board 260 may also be referred to as a Printed Circuit Board Assembly (PCBA).
As shown in fig. 4, the circuit board 260 is disposed in the receiving cavity of the lower housing assembly 250. In the embodiment of the present application, the distance between the plane of the circuit board support plane 256 and the plane of the coil support plane 253 is greater than the thickness of the circuit board 260.
In one embodiment, the disk coil 220 is disposed on a coil support plane 252 of the lower housing assembly 250, the circuit board 260 is disposed on a circuit board support plane 256 of the lower housing assembly 250, and a gap exists between an upper surface of the circuit board 260 and a lower surface of the disk coil 220. The upper surface of the magnetic sheet coil 220 is deformed by an external force, and the deformation of the magnetic sheet coil 220 does not press the circuit board 260, thereby preventing the circuit board 260 from being damaged.
In one embodiment, the disk coil 220 is disposed on the coil support plane 252 of the lower case assembly 250, and the circuit board 260 is fixed to the lower surface of the disk coil 220 by an adhesive, thereby improving the stability of the circuit board 260.
Fig. 17 is a schematic view of a limiting magnet and shielding assembly of a wireless charger provided in an embodiment of the present application. In the embodiment of the present application, the wireless charger 200 further includes a shielding component 280. The material of the shielding member 280 is a high conductivity material, such as copper, aluminum, etc. The thickness of the shield assembly 280 is greater than the skin depth. The skin depth is the thickness of most charges when the charges propagate in the conductor. The thickness of the shielding member 280 is less than the skin depth, and the shielding member 280 cannot effectively isolate the wireless power signal.
The shape of shield assembly 280 is related to the shape of position limiting magnet 230. In one embodiment, the position limiting magnet 230 is in the shape of a cylinder and the shielding assembly 280 is in the shape of a hollow cylinder, a circular cylinder, or the like. In one embodiment, the position limiting magnet 230 is shaped as a truncated cone and the shielding assembly 280 is shaped as a hollow truncated cone, a truncated ring, or the like. The shape of the shield assembly 280 may also be other shapes.
The shape of the shield assembly 280 is related to the manner of shielding. Taking the position limiting magnet 230 as an example, the position limiting magnet 230 is cylindrical. The shielding member 280 shields the entire surface of the position-limiting magnet 230, and the shielding member 280 has a hollow cylindrical shape. The shielding member 280 shields the side of the position-limiting magnet 230, and the shielding member 280 is a circular cylinder. The shape of the shield assembly 280 may also be other shapes.
In the embodiment, the position limiting magnet 230 has a cylindrical shape, the heat dissipating ring 240 has a ring shape, and the shielding member 280 disposed on the outer surface of the periphery of the position limiting magnet 230 contacts the inner surface of the heat dissipating ring 240. In one embodiment, the position limiting magnet 230 has a cylindrical shape, the heat dissipation ring 240 has a circular ring shape, and the shielding assembly 280 disposed on the side of the position limiting magnet 230 contacts the inner surface of the heat dissipation ring 240.
In one embodiment, the shielding assembly 280 is disposed in the middle of the heat dissipating ring 240, and the shielding assembly 280 and the heat dissipating ring 240 are fixed by an adhesive, so as to improve the stability of the wireless charger 200. In one embodiment, the shielding assembly 280 is disposed in the middle of the heat dissipating ring 240, and the thermally conductive adhesive fills the gap between the heat dissipating ring 240 and the shielding assembly 280, thereby improving the heat transfer efficiency between the devices of the wireless charger 200.
As shown in fig. 17, the shield assembly 280 of the wireless charger 200 is disposed on the outer surface of the circumference of the position restricting magnet 230. In the embodiment of the present application, the position-limiting magnet 230 has a cylindrical shape, and the shielding member 280 is disposed at a side surface of the position-limiting magnet 230. The shielding assembly 280 may prevent the wireless power signal from being reflected to the position limiting magnet 230, and the wireless power signal generated by the blocking coil assembly 222 may form a vortex on the position limiting magnet 230, thereby preventing the temperature inside the wireless charger 200 from rising.
In one embodiment, shield assembly 280 is also disposed on at least a portion of the upper surface of position limiting magnet 230. In one embodiment, shield assembly 280 is also disposed on at least a portion of the lower surface of position limiting magnet 230. In one embodiment, shield assembly 280 is also disposed on at least a portion of the upper surface and at least a portion of the lower surface of position limiting magnet 230. The upper surface of the position limiting magnet 230 is the surface of the position limiting magnet 230 near the upper housing assembly 210. The lower surface of the position-limiting magnet 230 is the surface of the position-limiting magnet 230 near the bottom of the groove structure of the lower housing assembly 250.
In one embodiment, shield assembly 280 is also disposed on at least a portion of the upper surface of heat sink ring 240. In one embodiment, shield assembly 280 is also disposed on at least a portion of the lower surface of heat sink ring 240. In one embodiment, shield assembly 280 is also disposed on at least a portion of the upper surface and at least a portion of the lower surface of heat dissipating ring 240. The upper surface of the heat dissipating ring 240 is the surface of the heat dissipating ring 240 adjacent to the upper housing assembly 210. The lower surface of the heat dissipation ring 240 is the surface of the heat dissipation ring 240 near the bottom of the groove structure of the lower housing assembly 250.
In one embodiment, the shield assembly 280 disposed on the upper surface of the position limiting magnet 230 contacts the lower surface of the upper housing assembly 210. In one embodiment, the shielding member 280 disposed on the upper surface of the heat dissipating ring 240 contacts the lower surface of the upper housing member 210.
In one embodiment, the shield member 280 disposed on the lower surface of the position limiting magnet 230 is in contact with the bottom of the groove structure of the lower housing member 250. In one embodiment, the shielding member 280 disposed on the lower surface of the heat dissipating ring 240 contacts the bottom of the groove structure of the lower housing member 250.
In one embodiment, the shield assembly 280 disposed on the upper surface of the position limiting magnet 230 and the shield assembly 280 disposed on the upper surface of the heat dissipating ring 240 are in a single plane. In one embodiment, the shielding assembly 280 disposed on the lower surface of the position limiting magnet 230 and the shielding assembly 280 disposed on the lower surface of the heat dissipating ring 240 are on the same plane.
As shown in fig. 18 (a), shield assembly 280 is mounted intermediate heat sink ring 240 and position limiting magnet 230. The shield assembly 280 is in the shape of a circular cylinder with the top view of the extension being circular. The upper port of the shield assembly 280 is provided with an extension edge having an outside radius less than or equal to the inside radius of the pole coil 220. The outer extension of the shielding assembly 280 is disposed on the upper surface of the heat dissipating ring 240, which facilitates the assembly personnel to install the shielding assembly 280. The outer extension edge of the shield assembly 280 may contact the magnetic sheet coil 220, so that a heat conduction loop is formed between the magnetic sheet coil 220 and the position-limiting magnet 230, thereby improving the heat transfer efficiency between the devices of the wireless charger 200. The gap between the heat dissipation ring 240 and the shield assembly 280 may be filled with a thermally conductive gel, thereby improving the efficiency of heat transfer between the various components of the wireless charger 200.
The same parts in fig. 18 (b) as in fig. 18 (a) will not be described again. As shown in fig. 18 (b), the gap between the position-limiting magnet 230 and the magnet support plane 253 of the lower housing assembly 250 may be further filled with a heat conductive gel, which improves the heat transfer efficiency between the position-limiting magnet 230, the heat dissipation ring 240, and the lower housing assembly 250 in the wireless charger 200.
The same parts in fig. 18 (c) as in fig. 18 (a) will not be described again. As shown in fig. 18 (c), a shield assembly 280 is further provided to a portion of the upper surface of the position limiting magnet 230, facilitating the assembly personnel to install the shield assembly 280.
The same parts in fig. 18 (d) and fig. 18 (c) are not described again. As shown in fig. 18 (d), the gap between the position-limiting magnet 230 and the magnet support plane 253 of the lower housing assembly 250 may be further filled with a heat conductive gel, which improves the heat transfer efficiency between the position-limiting magnet 230, the heat dissipation ring 240, and the lower housing assembly 250 in the wireless charger 200.
The same parts in fig. 18 (e) and fig. 18 (c) are not described again. As shown in fig. 18 (e), the outer extension of shield member 280 may also be disposed on the entire upper surface of heat dissipating ring 240. Accordingly, the shielding assembly 280 may have a cylindrical shape with a circular ring shape in a side view and a circular shape in a top view.
The same parts in fig. 18 (f) and fig. 18 (e) will not be described again. As shown in fig. 18 (f), the gap between the position limiting magnet 230 and the magnet support plane 253 of the lower housing assembly 250 may be further filled with a heat conductive gel, which improves heat transfer efficiency among the position limiting magnet 230, the heat dissipation ring 240, and the lower housing assembly 250 in the wireless charger 200.
The same parts in FIG. 18 (g) as in FIG. 18 (a) will not be described again. As shown in fig. 18 (g), a shield assembly 280 is also provided to a portion of the lower surface of the position restricting magnet 230. The shielding assembly 280 does not entirely cover the lower surface of the position limiting magnet 230, and the shielding assembly 280 is prevented from blocking the downward heat transfer of the position limiting magnet 230.
The same parts in FIG. 18 (h) as in FIG. 18 (g) will not be described again. As shown in fig. 18 (h), the gaps between the shielding member 280, the position-limiting magnet 230, and the magnet support plane 253 of the lower housing member 250, which are disposed on the lower surface of the position-limiting magnet 230, may be further filled with a heat conductive adhesive, so as to improve the heat transfer efficiency among the position-limiting magnet 230, the shielding member 280, and the lower housing member 250 in the wireless charger 200.
The same portions in FIG. 18 (i) and FIG. 18 (g) are not repeated. As shown in fig. 18 (i), a shield assembly 280 is further provided to a portion of the upper surface of the position-defining magnet 230, facilitating the assembly personnel to install the shield assembly 280.
The same portions in fig. 18 (j) as in fig. 18 (i) will not be described again. As shown in fig. 18 (j), the gaps between the shielding member 280, the position-limiting magnet 230, and the magnet support plane 253 of the lower housing member 250, which are disposed on the lower surface of the position-limiting magnet 230, may be further filled with a heat conductive adhesive, thereby improving the heat transfer efficiency among the position-limiting magnet 230, the shielding member 280, and the lower housing member 250 in the wireless charger 200.
The same parts in fig. 18 (k) as in fig. 18 (i) will not be described again. As shown in fig. 18 (k), the shielding assembly 280 is also disposed on the entire upper surface of the position-defining magnet 230 to prevent the wireless power signal radiated from the coil assembly 222 from being reflected to the upper surface of the position-defining magnet 230.
The same parts in FIG. 18 (l) as in FIG. 18 (k) will not be described again. As shown in fig. 18 (l), the gaps between the shielding member 280, the position-limiting magnet 230, and the magnet support plane 253 of the lower housing member 250, which are disposed on the lower surface of the position-limiting magnet 230, may be further filled with a heat conductive adhesive, so as to improve the heat transfer efficiency among the position-limiting magnet 230, the shielding member 280, and the lower housing member 250 in the wireless charger 200.
The same portions in fig. 18 (m) as in fig. 18 (a) will not be described again. As shown in fig. 18 (m), the shielding assembly 280 is further disposed on the entire lower surface of the position-defining magnet 230 to prevent the wireless power signal radiated from the coil assembly 222 from being reflected to the lower surface of the position-defining magnet 230. In one embodiment, the shielding assembly 280 disposed on the lower surface of the position limiting magnet 230 and the gap between the position limiting magnets 230 may be further filled with a heat conductive adhesive, so as to improve the heat transfer efficiency between the position limiting magnets 230 and the shielding assembly 280 in the wireless charger 200.
The same portions in fig. 18 (n) and 18 (m) are not described again. As shown in fig. 18 (n), the gap between the shielding member 280 disposed on the lower surface of the position-limiting magnet 230 and the magnet supporting plane 253 of the lower housing member 250 may be further filled with a heat conductive adhesive, so as to improve the heat transfer efficiency between the position-limiting magnet 230, the shielding member 280, and the lower housing member 250 in the wireless charger 200.
The same portions in fig. 18 (o) and 18 (m) are not described again. As shown in fig. 18 (o), the shielding assembly 280 is also disposed at a portion of the upper surface of the position-defining magnet 230 to prevent the wireless power signal radiated from the coil assembly 222 from being reflected to the upper surface of the position-defining magnet 230.
The same portions in fig. 18 (p) and 18 (o) are not described again. As shown in fig. 18 (p), the gap between the shield member 280 disposed on the lower surface of the position limiting magnet 230 and the magnet support plane 253 of the lower housing member 250 may be filled with a heat conductive gel, thereby improving the heat transfer efficiency between the position limiting magnet 230, the shield member 280, and the lower housing member 250 in the wireless charger 200.
The same portions in fig. 18 (q) as in fig. 18 (m) will not be described again. As shown in fig. 18 (q), the shielding assembly 280 is also disposed on the entire upper surface of the position-defining magnet 230 to prevent the wireless power signal radiated from the coil assembly 222 from being reflected to the upper surface of the position-defining magnet 230.
The same parts in fig. 18 (r) and fig. 18 (q) are not described again. As shown in fig. 18 (r), the gap between the shielding member 280 disposed on the lower surface of the position-limiting magnet 230 and the magnet supporting plane 253 of the lower housing member 250 may be further filled with a heat conductive adhesive, so as to improve the heat transfer efficiency between the position-limiting magnet 230, the shielding member 280, and the lower housing member 250 in the wireless charger 200.
The heat dissipation ring 240 of the wireless charger 200 provided by the embodiment of the present application is made of a material with high thermal conductivity and low electrical conductivity. The heat dissipation ring 240 is disposed 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 position limiting magnet 230, the circuit board 260, and the like, so that heat of the upper housing assembly 210, the magnetic sheet coil 220, the position limiting magnet 230, the circuit board 260, and the like can be transferred to the lower housing assembly 250, the heat dissipation area of the wireless charger 200 is increased, and the heat dissipation capacity of the wireless charger 200 can be improved.
In one embodiment, the heat dissipating ring 240 may be part of the lower housing assembly 250. The heat dissipating ring 240 and the lower housing member 250 are manufactured by integral molding. The heat dissipation ring 240 is located at the magnet support plane 253 of the lower housing assembly 250. The heat dissipating ring 240 and the lower housing assembly 250 are an integrated structure, which can reduce the number of parts of the wireless charger 200 and reduce the difficulty of assembling the wireless charger 200.
In one embodiment, the heat dissipating ring 240 and the lower housing assembly 250 are a unitary structure, and the magnet support plane 253 of the lower housing assembly 250 may not need to be provided with the spacer plate 254. During the manufacture of the heat dissipation ring 240 and the lower housing assembly 250, the inside radius of the heat dissipation ring 240 is made larger than the outside radius of the position limiting magnet 230. In one embodiment, the lower housing assembly 250 is manufactured without the partition plate 254 in the groove structure, which can greatly reduce the difficulty of manufacturing the lower housing assembly 250.
In one embodiment, the heat dissipating ring 240 and the lower housing assembly 250 of the wireless charger 220 provided in the embodiments of the present application may be separate components. The assembly process of the wireless charger 200 is as follows:
the first step is as follows: the heat dissipation ring 240 is disposed at the magnet support plane 253 of the lower housing assembly 250. Specifically, the heat dissipation ring 240 is in contact with and fixed to the magnet support plane 253 of the lower housing assembly 250, and the heat dissipation ring 240 is in contact with and fixed to the inner side wall of the circular cylindrical body of the coil support plane 252 of the lower housing assembly 250.
The second step: the position limiting magnet 230 is disposed inside the heat dissipation ring 240. Specifically, the position limiting magnet 230 is in contact with and fixed to the magnet supporting plane 253 of the lower housing assembly 250, and the position limiting magnet 230 is in contact with and fixed to the inner side surface of the heat dissipating ring 240. Accordingly, the position limiting magnet 230 and the heat dissipating ring 240
The third step: the cable 270 is electrically connected to the circuit board 260 through the through-hole 255 of the lower housing assembly 250. Specifically, the cable 270 may be fixed to an end point of the outer surface of the circuit board 260 by soldering or the like.
The fourth step: the circuit board 260 is disposed on the circuit board support plane 256 of the lower housing assembly 250. Specifically, the surface of the circuit board 260 on the side to which the cable 270 is attached is contacted and fixed to the circuit board support plane 256, and the projections of the cable 270 and the circuit board 260 are recessed into the lead grooves 257 of the circuit board support plane 256.
The fifth step: the magnetic sheet coil 220 is disposed on a coil support plane 252 of the lower case assembly 250. Specifically, the magnetic sheet coil 220 is contacted and fixed with the coil support plane 252 of the lower case assembly 250, and the coil port of the magnetic sheet coil 220 is electrically connected with the port of the circuit board 260. The disk coil 220 is nested between the outer side surface of the heat dissipation ring 240 and the inner side wall of the groove structure of the lower case assembly 250, and the limiting magnet 230, the heat dissipation ring 240, the disk coil 220, and the inner side wall of the groove structure of the lower case assembly 250 constitute a transverse limiting structure.
And a sixth step: the upper case assembly 210 is disposed at the upper case supporting plane 251 of the lower case assembly 250. Specifically, the upper case assembly 210 is in contact with and fixed to the upper case supporting plane 251 of the lower case assembly 250, and the upper surface of the upper case assembly 210 and the upper surface of the lower case assembly 250 are on the same plane. The lower surface of the upper case assembly 210 contacts the upper surface of the magnetic sheet coil 220, and the upper case assembly 210, the magnetic sheet coil 220, and the coil support plane 252 constitute a longitudinal limit structure.
In the assembly process of the wireless charger 200 in the embodiment of the present application, the heat dissipating ring 240, the position limiting magnet 230, the circuit board 260, the magnetic sheet coil 220, and the upper housing assembly 210 are sequentially fixed on the magnet supporting plane 253, the circuit board supporting plane 256, the coil supporting plane 252, and the upper housing supporting plane 251 of the lower housing assembly 250 in order from bottom to top, so as to achieve the assembly of the wireless charger 200.
In one embodiment, heat sink ring 240 is part of lower housing assembly 250. The above-described "first step" may be omitted during the assembly of the wireless charger 200. In this application, the heat dissipating ring 240 and the lower housing assembly 250 are an integral structure, which can reduce the number of parts of the wireless charger 200, make the wireless charger 200 easier to assemble, and improve the assembly efficiency.
In one embodiment, the heat dissipating ring 240 and the lower housing assembly 250 are separate components. The lower housing assembly 250 is composed of a bottom plate and side plates. The assembly process of the wireless charger 200 is as follows:
the first step is as follows: the heat dissipation ring 240 is disposed at the bottom plate of the lower housing assembly 250. Specifically, the heat dissipation ring 240 is in contact with and fixed to the bottom plate of the lower housing assembly 250. At this time, the bottom plate of the lower housing assembly 250 is also the magnet support plane 253 of the lower housing assembly 250.
The second step: the position limiting magnet 230 is disposed inside the heat dissipation ring 240. Specifically, the position limiting magnet 230 is in contact with and fixed to the bottom plate of the lower housing assembly 250, and the position limiting magnet 230 is in contact with and fixed to the inner side surface of the heat dissipating ring 240.
The third step: the cable 270 is electrically connected to the circuit board 260 through the through-hole 255 of the side plate of the lower housing assembly 250. Specifically, the cable 270 may be fixed to the end point of the outer surface of the circuit board 260 by soldering or the like.
The fourth step: the circuit board 260 is disposed on the circuit board support plane 256 of the lower housing assembly 250. Specifically, the surface of the circuit board 260 on the side to which the cable 270 is attached is contacted and fixed to the circuit board support plane 256, and the projections of the cable 270 and the circuit board 260 are recessed into the lead grooves 257 of the circuit board support plane 256.
The fifth step: the magnetic sheet coil 220 is disposed on a coil support plane 252 of a side plate of the lower case assembly 250. Specifically, the magnetic sheet coil 220 is contacted and fixed with the coil support plane 252 of the side plate of the lower case assembly 250, and the coil port of the magnetic sheet coil 220 is electrically connected with the port of the circuit board 260.
In the process of assembling the wireless charger 200, the bottom plate of the lower housing assembly 250 is used as an assembly line to perform the "first step" and the "second step", and the side plates of the lower housing assembly 250 are used as an assembly line to perform the "third step", the "fourth step", and the "fifth step". In the assembling process, the assembly line of the bottom plate of the lower housing assembly 250 and the assembly line of the side plate of the lower housing assembly 250 are not in sequence, and the two types of assembly lines can be assembled simultaneously or in tandem, which is not limited herein.
And a sixth step: the side plates of the lower housing assembly 250 are disposed at the bottom plate of the lower housing assembly 250. Specifically, the side plates of the lower housing assembly 250 are nested on the bottom plate of the lower housing assembly 250, such that the heat dissipation ring 240 is in contact with and fixed to the inner side wall of the circular cylindrical body of the coil support plane 252 of the side plates of the lower housing assembly 250, and the side plates of the lower housing assembly 250 are in contact with and fixed to the bottom plate of the lower housing assembly 250.
The seventh step: the upper case assembly 210 is disposed at the upper case supporting plane 251 of the side plate of the lower case assembly 250. Specifically, the upper case assembly 210 is contacted and fixed with the upper case supporting planes 251 of the side plates of the lower case assembly 250, and the upper surface of the upper case assembly 210 and the upper surface of the lower case assembly 250 are on one plane.
In the embodiment of the application, in the wireless charger assembling process, the lower shell assembly 250 is disassembled into the bottom plate and the side plates, so that the complexity of the structure of the lower shell assembly 250 is reduced, the wireless charger 200 is assembled more easily, and the assembling efficiency is improved. The lower case assembly 250 is disassembled into a bottom plate and a side plate, the heat dissipation ring 240 and the position-limiting magnet 230 are fixed on the bottom plate of the lower case 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 case assembly 250. In the assembling process, the bottom plate of the lower housing assembly 250 and the side plate of the lower housing assembly 250 are assembled in two assembly lines, and then the total assembly is performed, so that the time of the wireless charger 200 can be reduced, and the manufacturing productivity can be improved.
In addition, the heat conducting components of the wireless charger 200 are split into the upper housing assembly 210, the side plates of the lower housing assembly 250, the bottom plate of the lower housing assembly 250 and the heat dissipation ring 240, and according to actual requirements, the components are made of different materials, so that the wireless charger 200 can improve heat dissipation performance at fixed points and optimize cost.
The upper housing assembly 210, the magnetic sheet coil 220, the limiting magnet 230, the heat dissipation ring 240, the lower housing assembly 250 and the circuit board 260 in the wireless charger 200 provided by the embodiment of the application can be fixed at a preset position through the adhesive, so that the structural strength of the wireless charger 200 is enhanced, and the durability of the product is improved. Gaps among the upper housing assembly 210, the magnetic sheet coil 220, the limiting magnet 230, the heat dissipation ring 240, the lower housing assembly 250 and the circuit board 260 in the wireless charger 200 may be further filled with a heat conductive adhesive, so that the structural strength and the heat dissipation performance of the wireless charger 200 are improved.
In the embodiment of the present application, the upper surface of the lower housing assembly 250 of the wireless charger 200 is provided with a groove structure, and the groove structure and the upper housing assembly 210 are coupled by an adhesive to form a cavity structure. Heat-dissipating ring 240 is nested within position-limiting magnet 230, and disk coil 220 is nested within heat-dissipating ring 240.
In one embodiment, the upper housing assembly 210 is secured to the upper housing support plane 251 of the lower housing assembly 250 by an adhesive. Specifically, the adhesive is disposed on the upper housing supporting plane 251 or the lower surface of the upper housing assembly 210, the upper housing assembly 210 is disposed on the upper housing supporting plane 251, and the lower surface of the upper housing assembly 210 and the upper housing supporting plane 251 are fixedly connected by the adhesive. In the embodiment of the present application, the upper housing assembly 210 and the lower housing assembly 250 of the wireless charger 200 are fixed together by the adhesive, so that the housing of the wireless charger 200 is more beautiful compared to the existing screw fixing manner.
In the embodiment of the present application, the adhesive may also be an AB tape, a double-sided tape, or the like, which is not limited herein. The AB glue can be made of acrylic acid, epoxy, polyurethane and the like.
In one embodiment, at least one of the position limiting magnet 230 or the heat dissipation ring 240 is fixed to the bottom of the groove structure of the lower housing assembly 250 by an adhesive. In one embodiment, at least one of the position limiting magnet 230 or the heat dissipating ring 240 is fixed to the lower surface of the upper housing assembly 210 by an adhesive.
In one embodiment, the heat dissipating ring 240 is secured to the magnet support surface 253 of the lower housing 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 disposed at a set position of the magnet support plane 253 of the lower housing assembly 250, and the adhesive fixes the heat dissipation ring 240 to the magnet support plane 253 of the lower housing assembly 250, so as to prevent the heat dissipation ring 240 from shaking inside the wireless charger 200 to generate abnormal sound.
The heat dissipation ring 240 is fixed to the magnet support plane 253 of the lower housing assembly 250, and there may be a gap between the side of the heat dissipation ring 240 and the inner side wall of the groove structure of the lower housing 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 housing assembly 250 may be filled with a heat conductive adhesive, which improves the heat dissipation capability of the wireless charger 200. Correspondingly, the inner side wall of the groove structure of the lower housing assembly 250, the magnetic sheet coil 220 and the heat dissipation ring 240 form a transverse limiting structure, so that abnormal sound generated by transverse shaking of the magnetic sheet coil 220 and the heat dissipation ring 240 in the wireless charger 200 is avoided, and the structural reliability of the wireless charger 200 is improved.
In one embodiment, the spacing magnet 230 is fixed to the magnet support plane 253 of the lower housing assembly 250 by an adhesive. Specifically, the bottom surface of the position-limiting magnet 230 is provided with an adhesive, the position-limiting magnet 230 is embedded in the heat-dissipating ring 240, and the position-limiting magnet 230 is in contact with the magnet supporting plane 253 of the lower housing assembly 250. The adhesive fixes the position-limiting magnet 230 to the magnet support plane 253 of the lower housing assembly 250, thereby preventing the position-limiting magnet 230 from shaking inside the wireless charger 200 to generate abnormal noise.
In one embodiment, limiter magnet 230 is nested within heat sink ring 240, with a gap between the outer side of limiter magnet 230 and the inner side of heat sink ring 240. The gap between the outer side of the position limiting magnet 230 and the inner side of the heat dissipation ring 240 may be filled with a thermally conductive gel. Correspondingly, the inner side wall of the groove structure of the lower housing assembly 250, the magnetic sheet coil 220, the heat dissipation ring 240 and the limiting magnet 230 form a transverse limiting structure, abnormal sound generated by shaking of the magnetic sheet coil 220, the limiting magnet 230 and the heat dissipation ring 240 inside the wireless charger 200 is avoided, and the structural reliability of the wireless charger 200 is improved. In addition, the heat conductive colloid may fill a gap between the outer side surface of the position-limiting magnet 230 and the inner side surface of the heat dissipation ring 240, so as to improve the heat dissipation capability of the wireless charger 200.
In one embodiment, the circuit board 260 is fixed to the receiving cavity by a thermal conductive adhesive. Specifically, the magnetic sheet coil 220 is disposed on the coil support plane 252, and the circuit board 260 is disposed between the magnetic sheet coil 220 and the bottom of the groove structure of the lower case bottom assembly 250. The magnetic sheet coil 220 and the bottom of the groove structure of the lower case bottom component 250 form a storage cavity. And the gaps among the magnetic sheet coil 220, the bottom of the groove structure of the lower shell bottom component 250 and the circuit board 260 are filled with heat-conducting colloid. The heat-conducting colloid fixes the circuit board 260 in the storage cavity, so that abnormal sound generated by shaking the circuit board 260 in the wireless charger 200 is avoided, the problem of circuit breaking caused by movement of the circuit board 260 in the storage cavity can be avoided, and the reliability of the wireless charger 200 is improved.
In one embodiment, the circuit board 260 is fixed to the lower surface of the disk coil 220 by an adhesive. Specifically, the surface of circuit board 260 or the lower surface of magnetic sheet coil 220 sets up the adhesive, and the adhesive is fixed in circuit board 260 the lower surface of magnetic sheet coil 220, avoids circuit board 260 to rock in wireless charger 200 inside and produces the abnormal sound, can also avoid circuit board 260 to remove and the problem of opening circuit appears in accomodating the cavity, has improved wireless charger 200's reliability.
In the embodiment of the present application, the groove structure of the lower housing assembly 250 is provided with a coil supporting plane 252. The coil support plane 252 is used to support the disk coil 220. The coil support plane 252 is adjacent to the upper surface of the lower housing assembly 250.
In one embodiment, the disk coil 220 is fixed to the coil supporting plane 252 of the lower case assembly 250 by an adhesive. Specifically, the coil support plane 252 is provided with the adhesive, and the magneto sheet coil 220 is provided on the coil support plane 252. The adhesive fixes the magnetic sheet coil 220 to the coil support plane 252 of the lower case assembly 250, thereby preventing the magnetic sheet coil 220 from shaking inside the wireless charger 200 to generate abnormal noise.
In one embodiment, the upper surface of the magnetic sheet coil 220 is in contact with the lower surface of the upper case assembly 210. The upper surface of the magnetic sheet coil 220 is a 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 a surface of the upper housing assembly 210 forming a cavity structure. Coil support plane 252 supports magnetic sheet coil 220, goes up casing subassembly 210, magnetic sheet coil 220, coil support plane 252 and constitutes vertical limit structure, avoids magnetic sheet coil 220 to rock in wireless charger 200 inside and produces the abnormal sound.
In one embodiment, a gap between the lower surface of the upper case assembly 210, the groove structure of the lower case assembly 250, and the magnetic sheet coil 220 is filled with a heat conductive adhesive, and the upper case assembly 210, the magnetic sheet coil 220, and the coil support plane 252 form a longitudinal position limiting structure, thereby preventing the magnetic sheet coil 220 from shaking inside the wireless charger 200 to generate abnormal sound, and improving the heat dissipation efficiency of the wireless charger 200.
In one embodiment, the coil support plane 252 is a fence-shaped structure, and a plurality of spaces between the fence-shaped structure are filled with a thermally conductive adhesive. In particular, the coil support plane 252 includes a fence-shaped support. The fence-shaped support body comprises an arc fence and a plurality of column-shaped fences. The gaps between the cylindrical fence, the arc fence and the inner side wall of the groove structure of the lower housing assembly 250 are filled with heat-conducting colloid, so that the heat dissipation capacity of the wireless charger 200 is improved.
In one embodiment, the lower housing component 250 includes two portions, a bottom plate and a side plate. The side plates of the lower housing assembly 250 are 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 position restricting magnet 230 are fixed to the bottom plate of the lower housing assembly 250 by a double-sided adhesive tape.
According to the wireless charger 200 provided by the embodiment of the application, a plurality of components are fixed through the adhesive, so that the structural strength of the wireless charger 200 is enhanced, and the durability of a product is improved. In addition, the gaps between the components of the wireless charger 200 are filled with the heat conductive colloid, so that the heat dissipation capacity of the wireless charger 200 is improved.
In the embodiment of the present application, the wireless charger 200 uses the powder of the ceramic material as the adhesive, and other types of adhesives such as white glue and double-sided tape are not required, so that the types of adhesives can be reduced, and the manufacturing cost of the wireless charger 200 can be reduced. Moreover, the powder of the ceramic material has good thermal conductivity, further improving the heat dissipation capability of the wireless charger 200.
In the embodiment of the present application, when the wireless charger 200 performs wireless charging, the magnetic sheet coil 220 generates a large amount of heat. The wireless power signal generated by the wireless charger 200 generates a vortex on the position limiting magnet 230, which generates a large amount of heat in the position limiting magnet 230. When the circuit board 260 is operated for a long time, various components of the circuit board 260 generate heat.
In the embodiment of the present application, the heat generating devices in the wireless charger 200 are mainly the magnetic sheet coil 220 and the circuit board 260. The disk coil 220 generates a large amount of heat in the process of converting electric energy into a wireless power signal. The circuit board 260 generates heat much less than the magnetic sheet coil 220 and the position-limiting magnet 230. Accordingly, the present application mainly solves the problem of heat generated from the magnetic sheet coil 220 and the position restricting magnet 230.
In order to improve the heat dissipation capability of the wireless charger 200, the upper housing assembly 210 and the lower housing assembly 250 of the wireless charger 200 may be made of a material with high thermal conductivity. In the embodiment of the present application, the material having high thermal conductivity includes ceramic, thermally conductive plastic, and the like.
In one embodiment, the upper housing component 210 and the lower housing component 250 may be made of a material with low conductivity. In the process of converting the electric energy into the wireless power signal by the magnetic sheet coil 220, the housing of the wireless charger 200 cannot transmit the electric energy, and the electric leakage condition cannot occur.
Fig. 19 is a schematic diagram of heat transfer of heat-generating components such as magnetic sheet coils and limiting magnets 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 case assembly 210, a magnetic sheet coil 230, a heat dissipation ring 240, and a lower case assembly 250. The upper surface of lower housing component 250 is provided with a groove structure, and the groove structure of lower housing component 250 and upper housing component 210 are coupled to form a cavity structure. The disk coil 230 is nested outside of the heat sink ring 240. The gaps between the groove structures of the upper and lower case assemblies 210 and 250, the magnetic sheet coil 230, and the heat dissipation ring 240 are filled with a heat conductive paste.
As shown in fig. 19, the recess structure of the lower case assembly 250 of the wireless charger 200 is provided with a magnetic sheet coil 220 and a heat dissipation ring 240. The heat sink ring 240 is disposed in the annular configuration of the disk coil 220, and the disk coil 220 is nested outside the heat sink ring. The outer side of the heat sink ring 240 is coupled to the disk coil 220, and the outer side of the heat sink ring 240 contacts the inner surface of the disk coil 220. The upper surface of the heat dissipation ring 240 is coupled with the lower surface of the upper case assembly 210, and the lower surface of the heat dissipation ring 240 is coupled with the bottom of the groove structure of the lower case assembly 250. The upper surface of the heat dissipation ring 240 is the surface of the heat dissipation ring 240 close to the upper housing component 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 groove structure of the lower housing component 250, and the lower surface of the upper housing component 210 is the surface of the upper housing component 10 forming the cavity structure.
In one embodiment, the heat dissipating ring 240 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, a thermal conductive adhesive is disposed between the upper surface of the heat dissipation ring 240 and the upper housing assembly 210, and a thermal conductive adhesive is disposed between the lower surface of the heat dissipation ring 240 and the bottom of the groove structure of the lower housing assembly 250. The heat dissipation ring 210 serves to transfer heat of the upper case assembly 210 and the magnetic sheet coil 220 to the bottom of the groove structure of the lower case assembly 250.
In one embodiment, the heat dissipating ring 240 and the lower housing component 250 are made of a high thermal conductivity material. The heat generated from the inner side surface of the magnet sheet coil 220 may be transferred to the heat dissipation ring 240 through the thermal conductive paste. The heat of the heat dissipation ring 240 is transferred to the lower housing assembly 250 through the thermally conductive adhesive. The lower case assembly 250 exchanges heat with the external air to transfer heat of the magnetic sheet coil 220 to the external air, thereby reducing the temperature of the wireless charger 200.
As shown in fig. 19, the groove structure of the lower housing assembly 250 is provided with a coil support plane 252. The disk coil 220 is disposed on a coil support plane 252. In one embodiment, an outer side surface of the disk coil 220 is in contact with an inner side wall of the groove structure of the lower case assembly 250, and a lower surface of the disk coil 220 is in contact with the coil support plane 252 of the lower case assembly 250. Heat generated from the magnetic sheet coil 220 can be rapidly transferred to the lower case assembly 250.
In one embodiment, the lower housing component 250 is fabricated from a high thermal conductivity material. Heat generated from the outer side surface and the lower surface of the magnetic sheet coil 220 may be transferred to the lower case assembly 250 through the thermal conductive paste. The lower case assembly 250 exchanges heat with the external air to transfer heat of the magnetic sheet coil 220 to the external air, thereby reducing the temperature of the wireless charger 200.
In one embodiment, the disk coil 220 is coupled to the lower surface of the upper housing assembly 210, and a thermally conductive adhesive is disposed between the disk coil 220 and the lower surface of the upper housing assembly 210. In one embodiment, the lower surface of the upper case 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 may be transferred to the upper case assembly 210 through the thermal conductive paste. The upper case assembly 210 exchanges heat with the external air to transfer heat of the magnetic sheet coil 220 to the external air, thereby reducing the temperature of the wireless charger 200.
As shown in fig. 19, the wireless charger 200 is also provided with a stopper magnet 230. The position limiting magnet 230 is disposed inside the heat dissipating ring 240, an upper surface of the position limiting magnet 230 is coupled with a lower surface of the upper case assembly 210, and a lower surface of the position limiting magnet 230 is coupled with a bottom of the groove structure of the lower case assembly 250. The upper surface of the position limiting magnet 230 is the surface of the position limiting magnet 230 near the upper housing assembly 210, and the lower surface of the position limiting magnet 230 is the surface of the position limiting magnet 230 near the bottom of the groove structure of the lower housing assembly 250.
In one embodiment, the spacing magnet 230 is secured between the lower surface of the upper housing component 210 and the bottom of the groove structure of the lower housing component 250. In one embodiment, a heat conductive adhesive is disposed between the upper surface of the position limiting magnet 230 and the lower surface of the upper housing assembly 210, and a heat conductive adhesive is disposed between the lower surface of the position limiting magnet 230 and the bottom of the groove structure of the lower housing assembly 250. A heat conductive adhesive is disposed between the heat dissipating ring 240 and the position limiting magnet 230. The limiting magnet 230 is used for transferring heat of the upper housing assembly 210 to the bottom of the groove structure of the lower housing assembly 250, so that the heat dissipation capacity of the wireless charger 200 is greatly improved, and the temperature of the wireless charger 200 is reduced.
In one embodiment, the side surface of the position limiting magnet 230 is in contact with the inner side surface of the heat dissipation ring 240, and the heat generated from the position limiting magnet 230 can be rapidly transferred to the heat dissipation ring 240.
As shown in fig. 6, 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 fixed limit magnets 230 of the magnet support plane 253. The heat of the limiting magnet 230 can exchange heat with the external gas through the heat dissipation hole 258, and the heat of the limiting magnet 230 is transferred to the external gas, so that the temperature of the wireless charger 200 is reduced. In other embodiments, the number of louvers 258 may be any number. The shape of the heat dissipation apertures 258 may be oval, polygonal, or other shapes.
In one embodiment, the radius of the convex structure of the lower surface of the upper case 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 case assembly 210 is not less than the radius of the position-limiting magnet 230. The upper case assembly 210 is disposed on the upper case support plane 251 of the lower case assembly 250, the upper case assembly 210 is in contact with not only the upper surface of the magnetic sheet coil 220 but also the bottom of the protrusion structure of the upper case assembly 210 is in contact with the upper surface of the position-restricting magnet 230, and the heat of the position-restricting magnet 230 is transferred to the upper case assembly 210. The upper housing assembly 210 exchanges heat with the outside air, thereby reducing the temperature of the wireless charger 200.
In one embodiment, the radius of the raised structure of the lower surface of the upper housing assembly 210 is not less than the radius of the heat dissipating ring 240. The upper case assembly 210 is disposed on the upper case support plane 251 of the lower case assembly 250, the upper case assembly 210 is in contact with not only the upper surface of the disk coil 220 but also the upper case assembly 210 is in contact with the position restricting magnet 230 and the heat dissipating ring 240, and heat of the position restricting magnet 230 and the heat dissipating ring 240 is transferred to the upper case assembly 210. The upper housing assembly 210 exchanges heat with the outside air to lower the temperature of the wireless charger 200.
In the embodiment of the present application, the upper surface of the position limiting magnet 230 and the upper surface of the heat dissipation ring 240 are in contact with the upper case assembly 210. The lower surface of the position-limiting magnet 230 and the lower surface of the heat dissipation ring 240 are in contact with the bottom of the groove structure of the lower housing assembly 250. The heat generated from the position restricting magnet 230 may be transferred to the upper and lower case assemblies 210 and 250, and the heat dissipation capability of the wireless charger 200 may be further improved.
As shown in fig. 19, the lower surface of the circuit board 260 contacts the magnet supporting plane 253 of the lower case assembly 250, or the upper surface of the circuit board 260 contacts the magnetic sheet coil 220. Heat generated from the circuit board 260 is transferred to the magnetic sheet coil 220, the heat dissipation ring 240, and the lower case assembly 250. In one 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 heat from the magnetic sheet coil 220. At this time, heat generated from the circuit board 260 is transferred to the lower housing assembly 250. In one embodiment, the temperature of the circuit board 260 is higher than that of the magnetic sheet coil 220, and heat generated from the circuit board 260 is transferred to the magnetic sheet coil 220 and the lower case assembly 250. The heat generated from the circuit board 260 and the heat generated from the magnetic sheet coil 220 are exchanged heat through the case of the wireless charger 200, thereby reducing the temperature of the wireless charger 200.
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 case assembly 210, the outer side surface of the magnetic sheet coil 220 and the lower surface of the magnetic sheet coil 220 are in contact with the lower case assembly 250, and the inner side surface of the magnetic sheet coil 220 is in indirect contact with the upper case assembly 210 and the lower case assembly 250 through the position-restricting magnet 230 and the heat-dissipating ring 240. The heat generated from the magnetic sheet coil 220 can be transferred into the case of the wireless charger 200 from the periphery, greatly improving the heat dissipation capability of the wireless charger 200. The housing of the wireless charger 200 exchanges heat with the outside air, thereby reducing the temperature of the wireless charger 200.
Fig. 20 is a schematic diagram of heat transfer of the electronic device provided in the embodiment of the present application and disposed in the wireless charger. As shown in fig. 20, wireless charger 200 wirelessly charges electronic device 100, and electronic device 100 generates heat. The electronic apparatus 100 has a relatively large number of components and a complicated structure, and it is necessary to prevent the temperature of the electronic apparatus 100 from becoming excessively high. Therefore, the electronic device 100 generates heat to cause an excessively high temperature, and it is necessary to reduce the wireless charging power or stop the wireless charging, thereby affecting the wireless charging speed of the electronic device 100.
As shown in fig. 20, the electronic device 100 is disposed on the upper surface of the upper housing assembly 210 of the wireless charger 200 during the wireless charging process. The convex structure of the electronic device 100 is embedded in the concave structure 211 of the upper housing member 210, and the convex structure of the electronic device 100 can be in contact with the concave structure 211 of the upper housing member 210. The periphery of the upper surface of the upper housing assembly 210 contacts the lower surface of the electronic device 100. The heat of the electronic device 100 is transferred to the housing of the wireless charger 200, so that the heat dissipation area of the electronic device 100 is increased, and the temperature of the electronic device 100 can be lowered quickly.
After the heat exchange between the upper housing assembly 210 and the electronic device 100 is performed, part of the heat of the upper housing assembly 210 directly exchanges heat with the surrounding air, and the heat of the electronic device 100 is transferred to the surrounding air of the upper housing assembly 210, so as to reduce the temperature of the electronic device 100. The upper housing component 210 may also be transferred to the lower housing component 250. The outer surface area of the lower housing assembly 250 is relatively large, so that heat of the electronic device 100 can be rapidly transferred to surrounding air, and the temperature of the electronic device 100 can be rapidly reduced.
In one embodiment, the material of the upper housing component 210 and the lower housing component 250 is a highly thermally conductive material. The thermal conductivity of the upper and lower case assemblies 210 and 250 is higher than the thermal conductivity of the electronic device 100, and the thermal resistance of the upper and lower case assemblies 210 and 250 is lower than the thermal resistance of the electronic device 100. The upper housing assembly 210 may rapidly absorb heat of the electronic device 100 and transfer the heat to the surrounding air and the lower housing assembly 250, which may improve the heat dissipation capability of the electronic device 100. The heat of the electronic device 100 is dissipated through the heat dissipation channel of "the electronic device 100 → the upper housing assembly 210 of the wireless charger 200 → the lower housing assembly 250 of the wireless charger 200", so that the temperature of the electronic device 100 is rapidly reduced, and the wireless charging speed of the electronic device 100 is increased.
In one embodiment, the gaps of the upper housing assembly 250, the limiting magnet 230, the heat dissipating ring 240, and the lower housing assembly 250 of the wireless charger 200 are filled with a thermally conductive gel. The upper case assembly 210 absorbs heat of the electronic device 100, and the heat of the upper case assembly 210 may be transferred to the sides of the lower case assembly 250 and the bottom plate of the lower case assembly 250 through the thermal conductive adhesive. In the embodiment of the present application, the heat of the electronic device 100 is dissipated through the heat dissipation channel of "the electronic device 100 → the upper housing assembly 210 of the wireless charger 200 → the thermal conductive colloid → the lower housing assembly 250 of the wireless charger 200", so as to rapidly reduce the temperature of the electronic device 100, thereby increasing the wireless charging speed of the electronic device 100.
In one embodiment, the protrusion 212 of the upper housing component 210 contacts the upper surface of the position limiting magnet 230 and the upper surface of the heat dissipation ring 240 through a thermally conductive adhesive or directly, the lower surface of the position limiting magnet 230 contacts the bottom of the groove structure of the lower housing component 250, and the lower surface of the heat dissipation ring 240 contacts the bottom of the groove structure of the lower housing component 250.
After the upper housing assembly 210 absorbs heat of the electronic device 100, the heat of the upper housing assembly 210 is transferred to the position limiting magnet 230 and the heat dissipation ring 240. The heat of the position limiting magnet 230 and the heat dissipation ring 240 is transferred to the bottom of the groove structure of the lower housing assembly 250. In other embodiments, the upper housing assembly 210 may transfer heat to the bottom of the groove structure of the lower housing assembly 250 using one of the position limiting magnet 230 and the heat dissipation ring 240.
In the embodiment of the present application, heat of the electronic device 100 is dissipated through the heat dissipation channel of "the electronic device 100 → the upper housing assembly 210 of the wireless charger 200 → the position limiting magnet 230 and/or the heat dissipation ring 240 → the lower housing assembly 250 of the wireless charger 200", so as to rapidly reduce the temperature of the electronic device 100, thereby increasing the wireless charging speed of the electronic device 100.
The wireless charger 200 according to the embodiment of the present application can also dissipate heat from the electronic device 100 when wirelessly charging the electronic device 100, so as to improve the heat dissipation capability of the electronic device 100, thereby increasing the wireless charging speed of the electronic device 100. In the experimental simulation, when the wireless charger 200 provided in the embodiment of the present application wirelessly charges the electronic device 100, the charging time of the electronic device 100 from 0 to 100% can be reduced by 25min, and the charging speed is significantly increased.
The wireless charger that this application embodiment provided includes casing assembly and lower casing 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 provided in the lower housing assembly. The upper housing support plane supports the upper housing assembly. The coil support plane supports the disk coil. The magnet support plane supports the spacing magnet and the heat sink ring. The circuit board support plane supports the circuit board 260. A plurality of supporting planes of the wireless charger support each part at different positions, and the parts are prevented from being stacked together. If the wireless charger is subjected to an external force, the parts stacked together may be completely damaged, thereby reducing the reliability of the wireless charger 200.
The wireless charger that this application embodiment provided includes shell assembly, lower shell assembly and magnetic sheet coil down. The upper surface of lower casing subassembly is provided with groove structure, and groove structure and last casing subassembly coupling constitute cavity structures. The cavity structure contains the magnetic sheet coil. The magnetic sheet coil includes a magnetic sheet assembly and a coil assembly. The upper surface of magnetic sheet subassembly is provided with the ring channel for accomodate the coil pack. After the coil assembly converts the electric energy into the wireless power signal, the wireless power signal is radiated to the periphery. The radiation is carried out along the set direction under the limit of the magnetic sheet component. The magnetic sheet assembly limits the radiation direction of the wireless power signal, and avoids the phenomenon that the wireless power signal generated by the coil assembly forms vortex on other parts of the wireless charger to cause the temperature of the wireless charger to rise.
The wireless charger that this application embodiment provided includes shell assembly, lower shell assembly, magnetic sheet coil, spacing magnet and shielding subassembly down. The upper surface of lower casing subassembly is provided with groove structure, and groove structure and last casing subassembly coupling constitute cavity structures. The magnetic sheet coil, the limiting magnet and the shielding assembly are accommodated in the cavity structure. The shielding component is arranged between the magnetic sheet coil and the limiting magnet. The shielding assembly can block a wireless power signal generated by the coil assembly from forming a vortex on the limiting magnet, and the temperature rise of the wireless charger is avoided.
The wireless charger that this application embodiment provided includes casing assembly, lower casing assembly and heat dissipation ring down. 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 receives the heat dissipation ring. An upper surface of the heat dissipating ring is coupled to the upper housing assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower housing assembly. The heat dissipation ring can be passed away the heat of wireless charger through last casing assembly and lower casing assembly, realizes improving the heat-sinking capability of wireless charger.
The wireless charger that this application embodiment provided includes casing assembly, lower casing assembly and heat dissipation ring down. The upper surface of lower casing subassembly is provided with groove structure, and groove structure and last casing subassembly coupling constitute cavity structures. The cavity structure receives the heat dissipation ring. An upper surface of the heat dissipating ring is coupled to the upper housing assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower housing assembly. On electronic equipment's heat transfer reached last casing subassembly, the heat dissipation ring can be with the heat transfer of last casing subassembly to the bottom of casing subassembly down, and increase electronic equipment's heat radiating area realizes improving electronic equipment's heat-sinking capability.
The wireless charger that this application embodiment provided includes shell assembly, lower shell assembly, magnetic sheet coil and heat dissipation ring. The upper surface of lower casing subassembly is provided with groove structure, and groove structure and last casing subassembly coupling constitute cavity structures. The cavity structure contains the magnetic sheet coil and the heat dissipation ring. The heat dissipation ring is embedded in the magnetic sheet coil and is in contact with the magnetic sheet coil. An upper surface of the heat dissipating ring is coupled to the upper housing assembly. The lower surface of the heat dissipation ring is coupled with the bottom of the groove structure of the lower housing assembly. On electronic equipment's heat transfer reached last casing subassembly, the heat dissipation ring can be with the heat transfer of last casing subassembly to the bottom of casing subassembly down, and increase electronic equipment's heat radiating area realizes improving wireless charger and electronic equipment's heat-sinking capability.
The wireless charger that this application embodiment provided includes shell assembly, lower shell assembly, magnetic sheet coil and spacing magnet down. 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. Magnetic sheet coil and spacing magnet are accomodate to cavity structures. Magnetic sheet coil and spacing magnet are fixed on last casing subassembly and lower casing subassembly, avoid each part to rock in wireless charger inside and produce the abnormal sound. In addition, the magnetic sheet coil, the limiting magnet and other parts of the wireless charger are fixed together through the adhesive, so that the structural strength of the wireless charger is enhanced, and the durability of the product is improved. In addition, heat-conducting colloid is filled in gaps among all parts of the wireless charger, and the heat dissipation capacity of the wireless charger is improved.
The wireless charger that this application embodiment provided includes casing assembly, magnetic sheet coil, spacing magnet and heat dissipation ring down. The upper surface of the upper shell component is provided with a groove structure. The lower surface of the upper shell component is provided with a convex structure. The lower surface of the upper housing assembly is also provided with an annular groove.
In the embodiment of the application, the groove structure is arranged on the upper surface of the upper shell assembly, so that the groove structure on the upper surface of the upper shell assembly can be coupled with the protruding structure of the electronic equipment, the distance between the electronic equipment and the wireless charger can be shortened, and the electric energy loss during wireless charging is reduced. Be provided with protruding structure at last casing assembly's lower surface, let last casing assembly and heat dissipation ring and spacing magnet contact, improve wireless charger heat-sinking capability. An annular groove is further formed in the lower surface of the upper shell assembly, the magnetic sheet coil is embedded into the annular groove, and the height of the magnetic sheet coil can be increased. At the moment, the number of turns of the coil can be increased in the magnetic sheet coil, and the power of the wireless charger is improved.
The wireless charger that this application embodiment provided includes shell assembly, lower shell assembly, magnetic sheet coil and spacing magnet down. 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 the other port of the side plate of the lower shell assembly to form a cavity structure. Magnetic sheet coil and spacing magnet are accomodate to cavity structures. In this application, the casing subassembly split is two parts of bottom plate and curb plate down, can divide into two parts and make, has reduced the manufacturing degree of difficulty of casing subassembly down.
The type, number, shape, installation mode, structure and the like of the components of the wireless charger provided by the embodiment of the application are not limited to the above embodiments, and all technical schemes realized under the principle of the application are within the protection scope of the scheme. Any one or more of the embodiments or illustrations in the specification, combined in a suitable manner, are within the scope of the present disclosure.
Finally, the above embodiments are merely used to illustrate the technical solutions of the present application. It will be understood by those skilled in the art that although the present application has been described in detail with reference to the foregoing embodiments, various changes in the embodiments described above may be made and equivalents may be substituted for elements thereof. Such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (15)

1. A wireless charger, comprising: the magnetic sheet coil comprises an upper shell assembly (210), a lower shell assembly (250) and a magnetic sheet coil (220), wherein the upper surface of the lower shell assembly is provided with a groove structure, the groove structure of the lower shell assembly is coupled with the upper shell assembly to form a cavity structure, and the cavity structure is used for accommodating the magnetic sheet coil;
the groove structure of the lower shell assembly is provided with a coil supporting 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 shell assembly, the upper surface of the magnetic sheet coil is the surface of the magnetic sheet coil close to the upper shell assembly, and the lower surface of the upper shell assembly is the surface of the cavity structure formed by the upper shell assembly;
the magnetic sheet coil comprises a magnetic sheet assembly (221) and a coil assembly (222), the magnetic sheet assembly is provided with an annular groove, the annular groove is used for accommodating the coil assembly, and the opening of the annular groove points to the upper shell assembly; the magnetic sheet assembly, the annular groove and the coil assembly are in the shape of a concentric circular ring in plan view.
2. The wireless charger of claim 1, wherein a ratio between an outside radius of the magnetic sheet assembly and an inside radius of the magnetic sheet assembly is greater than 1.9.
3. The wireless charger of any one of claims 1-2 wherein a ratio between an outside radius of the annular groove and an inside radius of the annular groove is greater than 1.7.
4. The wireless charger according to any one of claims 1 to 3, wherein the inner magnetic sheet assembly of the annular groove has the same height as the outer magnetic sheet assembly of the annular groove.
5. The wireless charger according to any one of claims 1 to 3, wherein a protrusion structure is provided at a middle portion of a lower surface of the upper housing assembly, and a height of an inner magnetic sheet assembly of the annular groove is smaller than a height of an outer magnetic sheet assembly of the annular groove.
6. The wireless charger according to any one of claims 1-3, wherein the inner side wall of the groove structure of the lower housing assembly is provided with an upper housing support plane (251) that supports the upper housing assembly, the upper housing support plane being adjacent to the upper surface of the lower housing assembly, the coil support plane being adjacent to the bottom of the groove structure of the lower housing assembly.
7. The wireless charger according to any one of claims 1 to 3, wherein the lower surface edge of the upper case assembly is a flat surface, and the height of the outer magnetic sheet assembly of the annular groove is equal to the height difference between the upper case support plane and the coil support plane.
8. The wireless charger according to any one of claims 1 to 3, wherein 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 of any one of claims 1 to 8 wherein the top-down cross-sectional area of the opening of the annular groove is less than the top-down cross-sectional area of the bottom of the annular groove; alternatively, the first and second electrodes may be,
the overlooked cross-sectional area of the opening of the annular groove is smaller than the overlooked cross-sectional area of any position between the opening of the annular groove and the bottom of the annular groove.
10. The wireless charger according to any one of claims 1 to 9, further comprising a circuit board (260) fixed to a lower surface of the magnetic sheet coil, the lower surface of the magnetic sheet coil being a surface of the magnetic sheet coil near a bottom of the groove structure of the lower housing assembly.
11. The wireless charger according to any one of claims 1 to 10, wherein at least one notch is provided on the outer magnetic sheet member of the annular groove for coupling with a positioning structure on an inner side wall of the groove structure of the lower housing member or for passing a connecting wire between the coil member and the circuit board.
12. The wireless charger according to any one of claims 1 to 11, further comprising a limit magnet disposed in the middle of the annular configuration of the magnetic sheet assembly.
13. The wireless charger of claim 12 wherein the limit magnet is secured between the lower surface of the upper housing component and the bottom of the groove structure of the lower housing component.
14. The wireless charger of claim 13, further comprising a heat dissipating ring nested between the magnetic sheet assembly and the position limiting magnet.
15. The wireless charger of claim 14 wherein the heat dissipating ring is secured between the lower surface of the upper housing assembly and the bottom of the groove structure of the lower housing assembly.
CN202210795114.4A 2022-07-07 2022-07-07 Wireless charger Pending CN115189436A (en)

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Application Number Priority Date Filing Date Title
CN202210795114.4A CN115189436A (en) 2022-07-07 2022-07-07 Wireless charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210795114.4A CN115189436A (en) 2022-07-07 2022-07-07 Wireless charger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117976357A (en) * 2024-03-28 2024-05-03 厦门伊科电子有限公司 High-frequency high-power resonant inductor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117976357A (en) * 2024-03-28 2024-05-03 厦门伊科电子有限公司 High-frequency high-power resonant inductor

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