A wireless charging base and a wireless charging system

Abstract

The application provides a wireless charging base and a wireless charging system, relates to the technical field of charging equipment, and aims to solve the problem of how to cool the electric equipment in the charging process to ensure the stability and safety of the electric equipment. The wireless charging base comprises a shell, a fan and a charging assembly. The shell comprises opposite top plates, bottom plates and side plates. The top plate comprises a middle part and an edge part. The edge part comprises a plurality of convex parts and a plurality of concave parts, and the plurality of convex parts and the plurality of concave parts are arranged alternately. The plurality of convex parts and the middle part form a cooling space. The top plate is provided with a first ventilation structure, and the bottom plate or the side plate is provided with a second ventilation structure. The inside of the shell is provided with an airflow channel, and the fan is located in the airflow channel. The charging assembly comprises a charging coil, and the charging coil is stacked with the middle part. The wireless charging base provided by the application is used for charging the electric equipment.

Description

Technical Field

[0001] This application relates to the field of charging equipment technology, and in particular to a wireless charging dock and a wireless charging system. Background Technology

[0002] Wireless chargers use the principle of electromagnetic induction to transmit electrical energy to the receiving coil inside devices such as mobile phones and tablets through a charging coil. They eliminate the need for charging cables, making them convenient to use and increasingly widely adopted in daily life.

[0003] A wireless charging dock is a type of wireless charger. During the charging process, the devices on the wireless charging dock inevitably generate heat. If this heat is not dissipated in time, the temperature of the devices will rise, affecting their stability and safety. Summary of the Invention

[0004] This application provides a wireless charging dock and a wireless charging system to address the issue of how to dissipate heat from electrical devices during the charging process in order to ensure the stability and safety of the devices.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, a wireless charging dock is provided, comprising a housing, a fan, and a charging assembly. The housing includes opposing top and bottom plates and a side plate connected between the top and bottom plates.

[0007] The top plate includes a central portion and an edge portion surrounding the central portion. The edge portion includes multiple protrusions and multiple recesses. The multiple protrusions and multiple recesses are arranged alternately along the circumference of the central portion.

[0008] Multiple protrusions and the middle section form a cooling space.

[0009] The top plate, which encloses the cooling space, is equipped with a first ventilation structure, while the bottom plate or side plate is equipped with a second ventilation structure. An airflow channel is provided inside the casing, with one end of the channel connected to the first ventilation structure and the other end connected to the second ventilation structure.

[0010] The fan is located within the airflow channel. The fan includes an air inlet side and an air outlet side. One of the air inlet side and the air outlet side is connected to a first ventilation structure, and the other is connected to a second ventilation structure.

[0011] The charging assembly includes a charging coil located inside the housing, and the charging coil is stacked with the intermediate portion.

[0012] In this way, when charging a device using the wireless charging pad provided in this application, the device is supported on multiple protrusions. The area on the device where the receiving coil is located comes into contact with the gas in the cooling space, so that the receiving coil and the charging coil inside the device are parallel and opposite to each other. Based on this, the gap between two adjacent protrusions, the cooling space, the first ventilation structure, the airflow channel, and the second ventilation structure form the cooling channel of the wireless charging pad. The fan is located in the airflow channel of the cooling channel. When the fan is working, it can force the outside air to flow along the cooling channel to exchange heat with the receiving coil inside the device in the cooling space, thereby dissipating heat from the device during the charging process and ensuring the stability and safety of the device.

[0013] In one possible implementation of the first aspect, the charging coil has an inner hole around which it is arranged. Based on this, a first ventilation structure is disposed on the middle portion, and a second ventilation structure is disposed on the base plate. An airflow channel extends from the middle portion to the base plate and passes through the aforementioned inner hole. A fan is disposed within a portion of the airflow channel within the inner hole. The fan is an axial fan, with its axis aligned with the axis of the charging coil, and the air inlet and outlet sides being the two sides of the axial fan arranged along its own axis. This structure is simple, and the fan and charging coil are located at the same height, which helps to reduce the thickness of the wireless charging base, achieving a thinner wireless charging base.

[0014] In one possible implementation of the first aspect, the charging assembly further includes a magnetic shielding sheet. The magnetic shielding sheet includes a base plate, a first side plate, and a second side plate. The base plate is located on the side of the charging coil away from the center and is stacked with the charging coil. The base plate is annular and includes an inner edge and an outer edge. The first side plate is connected to the inner edge and located on the inner periphery of the charging coil, and the second side plate is connected to the outer edge and located on the outer periphery of the charging coil. The first side plate forms a sidewall of a partial airflow channel within the inner hole. The base plate reduces the magnetic field absorption of the charging coil by the metal structure on the side of the charging coil away from the center, the first side plate reduces the magnetic field absorption of the charging coil by the metal structure located within the inner hole of the charging coil, and the second side plate reduces the magnetic field absorption of the charging coil by the metal structure on the outer periphery of the charging coil. This increases the magnetic field strength of the charging coil towards the center, giving the charging coil a directionality for energy emission, thereby increasing the electromagnetic induction distance. Meanwhile, the base plate, first side plate, and second side plate also limit the movement of the charging coil, preventing misalignment during installation or use. Additionally, the first side plate contacts the airflow within the airflow channel, allowing heat generated by the charging coil during operation to be conducted to it and exchanged with the airflow through the first side plate. This shorter heat dissipation path improves the wireless charging stand's heat dissipation efficiency.

[0015] In one possible implementation of the first aspect, along the axial direction of the charging coil, the ends of the first side plate portion and the second side plate portion away from the bottom plate portion can contact the inner surface of the intermediate portion. This results in a relatively large height for both the first and second side plate portions along the axial direction of the charging coil. The first side plate portion can minimize the absorption of the magnetic field from the charging coil by the fan, and the second side plate portion can also minimize the absorption of the magnetic field from the charging coil by its region. Simultaneously, the heat conducted from the charging coil to the first and second side plate portions can be further conducted to the intermediate portion and exchanged with the airflow in the cooling space through the intermediate portion, thereby further improving the heat dissipation efficiency of the wireless charging dock.

[0016] In one possible implementation of the first aspect, a first rib is provided between the base plate and the base plate portion. The first rib surrounds the second ventilation structure and forms another part of the sidewall of the airflow channel. The inner diameter of the first rib is larger than the inner diameter of the first side plate portion. Along the radial direction of the charging coil, the first rib is located on the periphery of the first side plate portion, and the portion of the base plate portion between the first rib and the first side plate portion forms another part of the sidewall of the airflow channel. In this way, the airflow in the airflow channel can not only contact and exchange heat with the first side plate portion, but also with the portion of the base plate portion between the first rib and the first side plate portion, which can further improve the heat dissipation efficiency of the wireless charging stand. This structure is simple, has high stability, uses less material, and is lightweight, which can improve the convenience of the wireless charging stand and reduce costs.

[0017] In one possible implementation of the first aspect, a first ventilation structure is disposed on the side wall of the protrusion near the cooling space, and a second ventilation structure is disposed on the base plate. An airflow channel surrounds the outer periphery of the charging assembly. A fan is located on the side of the charging assembly away from the center; the fan is a centrifugal fan, and its axis is aligned with the axis of the charging coil. The outer periphery of the centrifugal fan is one of the air inlet side and the air outlet side, and the side of the centrifugal fan facing the second ventilation structure is the other of the air inlet side and the air outlet side. In the wireless charging dock shown in this embodiment, the size of the fan is not limited by the inner diameter of the charging assembly; the fan can be made larger to increase airflow and thus improve heat dissipation efficiency.

[0018] In one possible implementation of the first aspect, there are multiple first ventilation structures, with an equal number of first ventilation structures and a one-to-one correspondence with multiple protrusions, and each first ventilation structure is disposed on a corresponding protrusion. In this way, the ventilation effect of the first ventilation structures is superior, and the cooling effect is better.

[0019] In one possible implementation of the first aspect, the number of protrusions is even, and the even number of protrusions forms at least one pair of protrusions. Each pair of protrusions includes two protrusions, which are symmetrically arranged with respect to the center of the top plate. The number of first ventilation structures is equal to the number of pairs of protrusions and corresponds one-to-one. Each first ventilation structure is provided on one of the protrusions in a corresponding pair, while the other protrusion does not have a first ventilation structure. In this way, the airflow will not collide with each other after entering the cooling space through the first ventilation structure, thereby reducing noise.

[0020] In one possible implementation of the first aspect, along the direction from the top plate to the bottom plate, the side plate includes a first side plate region and a second side plate region arranged sequentially. The first side plate region is connected to the top plate to form a top cover, and the second side plate region is connected to the bottom plate to form a bottom shell. In this way, the shell structure is simple and the assembly difficulty is low.

[0021] In one possible implementation of the first aspect, a first liner is provided in at least the angled region between the second side plate region and the bottom plate within the bottom shell. The surface of the first liner facing away from the bottom shell is an arcuate surface recessed towards the connection between the second side plate region and the bottom plate, forming part of the inner wall surface of the airflow channel. This allows for a smooth transition of the airflow channel in the angled region between the second side plate region and the bottom plate, resulting in better airflow smoothness and reduced noise.

[0022] In one possible implementation of the first aspect, an arc-shaped transition surface connects the inner surface of the top plate and the inner surface of the first side plate region on the inner surface of the top cover. The arc-shaped transition surface is recessed at the connection point between the outer surface of the top plate and the outer surface of the first side plate region, forming part of the inner wall surface of the airflow channel. This allows for a smooth transition of the airflow channel in the angled region between the top plate and the first side plate region, resulting in better airflow smoothness and further noise reduction.

[0023] In one possible implementation of the first aspect, a second inner liner is provided on the outer periphery of the charging component. The surface of the second inner liner facing away from the charging component is a convex arc surface that arches towards the side plate. An airflow channel is located between the convex arc surface and the side plate, and the convex arc surface forms part of the inner wall surface of the airflow channel. In this way, the airflow channel transitions smoothly on the outer periphery of the charging component, resulting in better airflow smoothness and further reducing noise.

[0024] In one possible implementation of the first aspect, the wireless charging dock also includes a magnet disposed within the protrusion. This ensures a clean and consistent outer surface of the top plate, and because the protrusion is closer to the device than the middle section, placing the magnet within the protrusion reduces the distance between the magnet and the device, increasing the magnetic attraction between them.

[0025] In one possible implementation of the first aspect, the second side plate is located between the magnet and the charging coil along the radial direction of the charging coil. In this way, the second side plate can, to a certain extent, separate the charging coil and the magnet, preventing interference between the magnetic field of the charging coil and the magnetic field of the magnet.

[0026] In one possible implementation of the first aspect, the magnet is clamped between the protrusion and the first side plate region along the axial direction of the charging coil. The first side plate region, the recess, and the middle portion are integrally formed as the top cover body, and the protrusion is assembled and connected to the top cover body. This facilitates the assembly of the magnet within the top cover.

[0027] In one possible implementation of the first aspect, the charging coil is in contact with the intermediate portion; or, thermal paste, a thermal pad, or a thermal fluid is provided between the charging coil and the intermediate portion. In this way, the heat generated by the charging coil during operation can be conducted to the intermediate portion, and further exchanged between the intermediate portion and the airflow in the cooling space. Thus, the airflow in the cooling space, in addition to cooling the electrical equipment, also cools the charging coil. This shorter heat dissipation path enables the charging coil to have higher heat dissipation efficiency.

[0028] In one possible implementation of the first aspect, the material of at least the middle portion of the top plate includes ceramic and thermally conductive plastic. This allows for rapid conduction of heat generated during charging coil operation to the middle portion, thereby improving the heat dissipation efficiency of the charging coil.

[0029] In one possible implementation of the first aspect, the wireless charging dock further includes an adapter plate located on the outer periphery of the charging assembly, and the adapter plate is electrically connected to both the charging coil and the fan. This facilitates connection to external cables.

[0030] In one possible implementation of the first aspect, the wireless charging dock further includes an external cable, a controller, and external terminals. The external cable includes an internal terminal and an external terminal; the internal terminal is located inside the housing, and the external terminal is located outside the housing. The internal terminal is electrically connected to the charging coil and the fan. The controller is connected to the external terminal and is used to control the operation of the charging coil and the fan; the external terminals are connected to the controller. This placement of the controller outside the wireless charging dock, given its higher heat output, avoids the controller's heat threatening the stability and safety of the electrical equipment. Simultaneously, placing the heat-generating controller externally facilitates heat dissipation.

[0031] Secondly, a wireless charging system is provided, comprising a power-consuming device and a wireless charging dock as described in any of the above technical solutions. The power-consuming device includes a receiving coil, and the charging coil of the wireless charging dock is used to cooperate with the receiving coil for charging.

[0032] Since the wireless charging system provided in this application includes the wireless charging dock described in any of the above technical solutions, both can solve the same technical problem and achieve the same effect. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a wireless charging system provided in some embodiments of this application;

[0034] Figure 2 for Figure 1 The diagram shows the relative positions of the wireless charging system during the charging process.

[0035] Figure 3 A perspective view of a wireless charging dock provided for some embodiments of this application;

[0036] Figure 4 for Figure 3 The wireless charging dock shown is a 3D view viewed from direction D1.

[0037] Figure 5 for Figure 3 The wireless charging dock shown is a three-dimensional sectional view along the BB direction;

[0038] Figure 6 for Figure 5 An exploded view of the wireless charging dock shown;

[0039] Figure 7 for Figure 5 A schematic diagram of the structure of the inner surface of the top cover in the wireless charging dock shown.

[0040] Figure 8 For magnets and Figure 7 A schematic diagram of the assembly structure of the top cover in the wireless charging dock shown.

[0041] Figure 9 for Figure 5 The diagram shows the internal structure of the bottom shell of the wireless charging dock.

[0042] Figure 10 for Figure 9 The bottom shell shown is Figure 6 Assembly diagram of the drive unit in the wireless charging dock shown.

[0043] Figure 11 for Figure 6 The diagram shows the assembly of the bottom shell, drive unit, and fan in the wireless charging dock.

[0044] Figure 12 for Figure 6 An exploded view of the bottom shell, circuit board, and lead wire alignment structure of the wireless charging dock shown.

[0045] Figure 13 for Figure 12 Assembly diagram of the bottom shell, circuit board and lead wire straightening structure shown;

[0046] Figure 14 for Figure 13 The bottom shell, circuit board and shown Figure 6 A schematic diagram of the assembly structure of the charging coil and magnetic shielding sheet in the wireless charging dock shown.

[0047] Figure 15 This is a schematic diagram of the structure of the external cable in a wireless charging dock provided in some embodiments of this application;

[0048] Figure 16 A perspective view of a wireless charging stand provided for some embodiments of this application;

[0049] Figure 17 for Figure 16 The wireless charging dock shown is a three-dimensional sectional view along the CC direction.

[0050] Figure 18 for Figures 16-17 The diagram shows the structure of the fan in the wireless charging dock.

[0051] Figure 19 For simulation Figures 16-17 The image shows the airflow distribution of the wireless charging dock at a fan speed of 6000 rpm; specifically, Figure 19 (a) in the diagram shows the wind field distribution on the bottom surface of the wireless charging pad. Figure 19 (b) in the diagram shows the wind field distribution on the top surface of the wireless charging pad;

[0052] Figure 20 For simulation Figures 16-17 The diagram shows the temperature distribution of a device when the wireless charging dock is charging it and the fan inside the wireless charging dock is running at 6000 rpm.

[0053] Figure 21 A perspective view of a wireless charging stand provided for some embodiments of this application;

[0054] Figure 22 for Figure 21 The wireless charging dock shown is a three-dimensional sectional view along the DD direction. Detailed Implementation

[0055] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0056] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0057] In the embodiments of this application, it should be noted that the description of "approximately parallel" means that parallelism is allowed within a certain error range, which can be a range where the angle of deviation from absolute parallelism is less than or equal to 5°.

[0058] Wireless charging requires a transmitter and a receiver. Please refer to [link / reference]. Figure 1 , Figure 1 This is a schematic diagram of the structure of a wireless charging system provided in some embodiments of this application. The wireless charging system includes a wireless charging dock 100 and a power-consuming device 200. The power-consuming device 200 includes, but is not limited to, mobile phones, tablet personal computers, laptop computers, personal digital assistants (PDAs), personal computers, laptops, wearable devices, portable music players, radios, etc. This embodiment and the following embodiments use a mobile phone as an example for illustration, which should not be considered a special limitation on the structural form of the power-consuming device 200.

[0059] In the above embodiment, the wireless charging dock 100 is the transmitter, and the device 200 is the receiver. The transmitter has a built-in charging coil TX (as shown by the dashed line), and the receiver has a built-in receiving coil RX (as shown by the dashed line). During the charging process, please refer to... Figure 2 , Figure 2 for Figure 1 The diagram shows the relative positions of the wireless charging system during the charging process. The device 200 is placed on the wireless charging base 100. The plane where the charging coil TX is located is approximately parallel to the plane where the receiving coil RX is located, and the area surrounded by the charging coil TX is at least partially opposite to the area surrounded by the receiving coil RX.

[0060] In this way, when an alternating current I1 is passed through the charging coil TX, an alternating magnetic field H is generated around the charging coil TX. The magnetic field lines of this magnetic field H pass through at least part of the area surrounded by the receiving coil RX. Based on this, according to the principle of electromagnetic induction, an alternating current I2 can be induced in the receiving coil RX, thereby realizing the wireless transmission of electrical energy. This charging method does not require a charging cable connection, so it is convenient, safe and reliable to use.

[0061] During the charging process of the wireless charging system, the device 200 on the wireless charging dock 100 will inevitably generate heat. If this heat is not dissipated in time, the temperature of the device 200 will rise, which may affect the stability and safety of the device 200.

[0062] To address the aforementioned issues, this application employs a wireless charging dock 100 to dissipate heat from the power-consuming device 200. Therefore, the following section primarily describes the wireless charging dock 100.

[0063] Please see Figure 3 , Figure 3 This is a perspective view of a wireless charging stand 100 provided in some embodiments of this application. In this embodiment, the wireless charging stand 100 is generally disc-shaped. Based on this, for the convenience of the description of the embodiments below, an XYZ coordinate system is established. Specifically, the thickness direction of the wireless charging stand 100 is defined as the Z-axis direction, and the plane perpendicular to the Z-axis direction is defined as the XY plane. It is understood that the coordinate system setting of the wireless charging stand 100 can be flexibly set according to actual needs, and is not specifically limited here. In some other embodiments, the shape of the wireless charging stand 100 can also be a square disc, an elliptical disc, a triangular disc, etc., and is not specifically limited here.

[0064] Please continue reading. Figure 3 The wireless charging dock 100 includes a housing 10. The housing 10 serves to protect the structures housed within it. It should be noted that, for the convenience of the following descriptions of the embodiments, the terms "outer side" and "outer surface" used to describe the structures within the housing 10 refer to the side of the object being described that is away from the internal space of the housing 10, respectively; "inner side" refers to the side of the object being described that faces the internal space of the housing 10; and "inner surface" refers to the surface of the object being described that faces the internal space of the housing 10. These terms will not be elaborated upon further below.

[0065] Please refer to the following: Figure 3 and Figure 4 , Figure 4 for Figure 3The wireless charging dock 100 shown is a perspective view viewed from direction D1 (i.e., from bottom to top). The housing 10 includes a top plate 11, a bottom plate 12, and a side plate 13 connected between the top plate 11 and the bottom plate 12. The top plate 11, the bottom plate 12, and the side plate 13 can be integrally formed or separately formed and assembled together; this application does not specifically limit this.

[0066] In some embodiments, please continue reading Figure 3 and Figure 4 Along the direction from the top plate 11 to the bottom plate 12 (that is, in the opposite direction of the Z-axis), the side plate 13 includes a first side plate region 131 and a second side plate region 132 arranged sequentially. The first side plate region 131 is connected to the top plate 11 to form a top cover, and the second side plate region 132 is connected to the bottom plate 12 to form a bottom shell. Specifically, the first side plate region 131 and the top plate 11 can be integrally formed as a top cover, and the second side plate region 132 and the bottom plate 12 can also be integrally formed as a bottom shell. The bottom shell and the top cover can be assembled and connected together by means of threaded connection, snap-fit, adhesive, etc. In this way, the structure of the shell 10 is simple and the assembly difficulty is low.

[0067] The wireless charging stand 100 is used to transmit electrical energy to the side of the top cover that is opposite to the bottom shell. The material of the top cover includes, but is not limited to, non-metallic materials such as plastic, graphite, ceramic, and carbon fiber. These non-metallic materials allow the wireless charging stand 100 to transmit electrical energy to the side of the top cover that is opposite to the bottom shell, thus enabling the wireless charging stand 100 to perform its charging function.

[0068] The bottom shell can be made of materials including, but not limited to, metals such as copper, iron, aluminum, copper alloys, iron alloys, and aluminum alloys, or non-metals such as plastics, graphite, ceramics, and carbon fiber. In some embodiments, the bottom shell material can be metal. Specifically, the metal can be copper, iron, aluminum, copper alloys, iron alloys, aluminum alloys, etc. This enhances the metallic feel of the wireless charging stand 100, and the superior heat dissipation properties of metal allow for rapid heat transfer from the inside of the wireless charging stand 100 to the outside, thereby improving heat dissipation efficiency.

[0069] During the charging process, the wireless charging stand 100 is placed on a support surface such as a desktop, cabinet, or floor, with the outer surface of the base plate 12 facing the support surface and the top plate 11 located on the side of the base plate 12 facing away from the support surface. The device 200 is supported on the outer surface of the top plate 11.

[0070] Please refer to this carefully. Figure 4The base plate 12 is generally an inverted cone shape, arching from the center away from the top plate 11. This design results in a larger gap between the edge of the base plate 12 and the support surface when the wireless charging dock 100 is placed on a table, cabinet, or other supporting surface, compared to the central area of ​​the base plate 12. This allows users to easily insert their fingers to grasp the wireless charging dock 100, thereby improving its usability. In other embodiments, the base plate 12 may also be flat, or a cone shape or a convex spherical shell shape that arches from the center towards the top plate 11; no specific limitation is made here.

[0071] The top plate 11 is the part of the housing 10 that comes into contact with the electrical equipment 200. For details, please refer to the relevant documentation. Figure 3 The top plate 11 includes a middle part 111 and an edge part 112.

[0072] exist Figure 3 In the illustrated embodiment, the middle portion 111 is flat, which is simple and easy to form. In other embodiments, the middle portion 111 may also be a spherical shell protruding outward or recessed inward of the housing 10, or may be other curved panel shapes, which are not specifically limited here.

[0073] The edge portion 112 is an annular portion surrounding the central portion 111. Please refer to the following for details. Figure 3 The edge portion 112 includes a plurality of protrusions 1121 and a plurality of recesses 1122, which are arranged alternately in sequence along the circumference of the middle portion 111. Specifically, the edge portion 112 supports the electrical equipment by means of the plurality of protrusions 1121, which can ensure the stability of the support.

[0074] Here, "multiple" indicates a quantity of two or more. Figure 3 In the illustrated embodiment, there are four protrusions 1121 and four recesses 1122. In other embodiments, the number of protrusions 1121 and four recesses 1122 may be two, three, five, etc., and the specific number can be designed comprehensively based on both structural complexity and support stability.

[0075] It should be noted that the recessed portion 1122 refers to the portion of the edge portion 112 that is closer to the base plate 12 than the protruding portion 1121. The recessed portion 1122 may be flush with the middle portion 111, or it may be closer to or farther away from the base plate 12 than the middle portion 111. Figure 3 An example is given where the recessed portion 1122 is flush with the middle portion 111. When the recessed portion 1122 is flush with the middle portion 111, the top plate 11 has a simple shape and is easier to process.

[0076] Please continue to refer to this carefully. Figure 3Two adjacent protrusions 1121 and a recess 1122 located between them form a ventilation gap G. Multiple protrusions 1121 and a central portion 111 form a cooling space Q, which communicates with the ventilation gap G. In this way, when the electrical device 200 is supported on the multiple protrusions 1121, outside air can enter the cooling space Q through the ventilation gap G to cool the electrical device 200. This prevents safety and stability issues caused by excessive heat generated by the electrical device 200 during charging.

[0077] Based on the above, in order to improve the heat dissipation efficiency of electrical equipment 200, please refer to [further details needed]. Figure 3 The portion of the top plate 11 that encloses the cooling space Q is provided with a first ventilation structure 11a. This portion of the top plate 11 that encloses the cooling space Q includes a central portion 111 and a side wall of the protrusion 1121 near the cooling space Q. When the recess 1122 is further away from the bottom plate 12 than the central portion 111, the portion of the top plate 11 that encloses the cooling space Q also includes a side wall of the recess 1122 near the cooling space Q. Therefore, the first ventilation structure 11a can be provided on either the central portion 111 or the side wall 1121a of the protrusion 1121 near the cooling space Q. When the recess 1122 is further away from the bottom plate 12 than the central portion 111, the first ventilation structure 11a can also be provided on the side wall of the recess 1122 near the cooling space Q. Figure 3 An example of the first ventilation structure 11a being disposed in the middle part 111 is given, which should not be considered as a special limitation of this application.

[0078] In some embodiments, please refer to Figure 3 The first ventilation structure 11a is an open structure. In some other embodiments, the first ventilation structure 11a may also be a grille structure or a mesh structure, which is not specifically limited here.

[0079] Based on the above, please refer to Figure 4 A second ventilation structure 12a is provided on the base plate 12. In some other embodiments, the second ventilation structure 12a may also be provided on the side plate 13 or the top plate 11. The second ventilation structure 12a is a grille structure, which can prevent dust, foreign objects, etc. from entering while ensuring ventilation. In some other embodiments, the second ventilation structure 12a may also be an open structure or a mesh structure, which is not specifically limited here.

[0080] Based on the above, please refer to the following: Figures 3-5 , Figure 5 for Figure 3The wireless charging dock shown is a perspective cross-sectional view along the BB direction. The interior of the housing 10 is provided with an airflow channel C, one end of which is connected to the first ventilation structure 11a and the other end is connected to the second ventilation structure 12a.

[0081] In this way, the external airflow enters the airflow channel C inside the housing 10 through the second ventilation structure 12a, can be discharged to the cooling space Q through the first ventilation structure 11a, and further discharged through the ventilation gap G. See the airflow path below. Figure 5 Alternatively, external airflow enters the cooling space Q through the ventilation gap G, then further enters the airflow channel C inside the housing 10 through the first ventilation structure 11a, and is discharged through the second ventilation structure 12a. This airflow path is the same as path L2, but in the opposite direction. The ventilation gap G, cooling space Q, first ventilation structure 11a, airflow channel C, and second ventilation structure 12a form the cooling channel of the wireless charging dock 100. Both the ventilation gap G and the second ventilation structure 12a in this cooling channel are connected to the external space, allowing more cold airflow to enter the cooling space Q to cool the electrical device 200, thus improving the heat dissipation efficiency of the electrical device 200. At the same time, the cold airflow passes through the interior of the wireless charging dock 100, thus also improving the heat dissipation efficiency of the wireless charging dock 100.

[0082] In the above embodiments, please refer to the following for details on how to connect the second ventilation structure 12a with the external space. Figure 4 The outer surface of the base plate 12 is provided with a plurality of first support columns 121. These first support columns 121 are used to elevate the base plate 12 to a certain height to prevent moisture, dust, and other impurities on the support surface from entering the second ventilation structure 12a. At the same time, they allow a certain ventilation gap between the base plate 12 and the support surface, so that outside air can enter the second ventilation structure 12a through the ventilation gap, or the hot air discharged from the second ventilation structure 12a can be transferred to the outside environment. The structural form of the first support columns 121 includes, but is not limited to, columnar, block, etc., and the size of the first support columns 121 can be specifically designed according to actual needs, and is not specifically limited here.

[0083] Based on the above, in order to further improve the heat dissipation efficiency of electrical equipment, please refer to the following: Figure 5 The wireless charging dock 100 also includes a fan 60. Figure 5 The central fan 60 is not cut. The fan 60 is disposed within the airflow channel C. The fan 60 includes an air inlet side a and an air outlet side b. The air outlet side b of the fan 60 is connected to the first ventilation structure 11a, and the air inlet side a is connected to the second ventilation structure 12a; or, the air inlet side a is connected to the first ventilation structure 11a, and the air outlet side b is connected to the second ventilation structure 12a.

[0084] In this way, when the fan 60 rotates, it can force the outside air to flow along the aforementioned cooling channel, thereby improving the heat dissipation efficiency of the electrical equipment 200.

[0085] Please refer to the following: Figure 5 and Figure 6 , Figure 6 for Figure 5 The image shows an exploded view of the wireless charging dock 100. In addition to the aforementioned housing 10 and fan 60, the wireless charging dock 100 also includes a charging assembly, a magnet 70, a mounting base 80, an adapter plate 90, and a lead wire protective sleeve 00. The charging assembly includes a charging coil TX and a magnetic shielding sheet 20.

[0086] Understandable, Figure 5 and Figure 6 The wireless charging dock 100 is shown only schematically, and the actual shape, size, position, and construction of these components are not subject to change. Figure 5 and Figure 6 Limitations. In some other examples, the wireless charging dock 100 may also exclude at least one of the magnet 70, the mounting base 80, the adapter plate 90, and the lead wire protection sleeve 00, and the charging assembly may also exclude the magnetic shielding sheet 20.

[0087] Please refer to this carefully. Figure 5 The charging coil TX is located inside the housing 10. The charging coil TX is formed by winding conductive wire along a circular trajectory. The shape of this circular trajectory can be circular, square, elliptical, triangular, polygonal, etc., and is not specifically limited here. The charging coil TX is stacked on top of the middle part 111, that is, the plane where the circular extension trajectory of the charging coil TX is located is approximately parallel to the middle part 111. There may or may not be a gap between the charging coil TX and the middle part 111. In this way, when the wireless charging base 100 provided in this application is used to charge the device 200, the device is supported on multiple protrusions 1121. The receiving coil RX inside the device 200 is parallel and opposite to the charging coil TX. The area on the device 200 where the receiving coil RX is located is in contact with the gas in the cooling space Q. The airflow in the cooling space Q can be used to effectively dissipate heat from the area of ​​the device where the receiving coil is located, so as to ensure the stability and safety of the device 200.

[0088] In some embodiments, the projection of the charging coil TX along its axial direction onto the intermediate portion 111 may be located within the intermediate portion 111. Here, the axial direction of the charging coil TX refers to the direction perpendicular to the plane containing the circular trajectory of the charging coil TX. In other embodiments, the projection of the charging coil TX along its axial direction onto the intermediate portion 111 may also be partially located outside the edge of the intermediate portion 111.

[0089] The charging coil TX is used to emit electrical energy to the side of the upper cover away from the bottom shell using the principle of electromagnetic induction.

[0090] In some embodiments, the charging coil TX is thermally connected to the intermediate portion 111. Specifically, the charging coil TX can be in direct contact with the intermediate portion 111 for thermal connection, or a thermally conductive medium can be provided between the charging coil TX and the intermediate portion 111 to achieve indirect thermal connection through the thermally conductive medium. The thermally conductive medium includes, but is not limited to, thermal paste, thermal pads, or thermal liquids. Thermal paste includes, but is not limited to, thermal gel and thermal grease; thermal pads include, but are not limited to, silicone, foam, and graphite; and thermal liquids include, but are not limited to, liquid metals such as gallium-based alloys or silicone-based liquids.

[0091] In this way, the heat generated when the charging coil TX is working can be conducted to the middle part 111, and then the middle part 111 comes into contact with the airflow in the cooling space Q to achieve heat exchange. Thus, the airflow in the cooling space Q can not only cool the electrical equipment 200, but also cool the charging coil TX. This heat dissipation path is short, which enables the charging coil TX to have high heat dissipation efficiency.

[0092] Based on the above embodiments, at least the middle portion 111 of the top plate 11 is made of a thermally conductive material. Specifically, this thermally conductive material includes, but is not limited to, ceramics and thermally conductive plastics. Ceramics and thermally conductive plastics have high thermal conductivity, enabling them to quickly conduct the heat generated during the operation of the charging coil to the middle portion 111, thereby improving the heat dissipation efficiency of the charging coil TX. The thermally conductive plastic is made by uniformly filling a polymer matrix material with thermally conductive fillers (including particles, fibers, sheets, etc.) to improve its thermal conductivity. The polymer matrix materials include, but are not limited to, polyphenylene sulfide (PPS), polyamide-6 (PA6), polyamide-66 (PA66), polyamide-12 (PA12), polyamide-46 (PA46), liquid crystal polymer (LCP), thermoplastic elastomer (TPE), polycarbonate (PC), polypropylene (PP), polyphthalamide (PPA), and polyetheretherketone (PEEK). Thermally conductive fillers include, but are not limited to, graphite, silicon carbide, carbon fiber, carbon nanotubes, graphene, and beryllium carbide. Thermally conductive plastics are easy to form complex surface structures, and can be specifically used in injection molding.

[0093] In some other embodiments, the charging coil TX and the intermediate portion 111 may also be spaced apart, that is, there is a gap between the charging coil TX and the intermediate portion 111. In this way, a small amount of heat from the charging coil TX is transferred to the air in the gap, and then further transferred to the intermediate portion 111 by that part of the air.

[0094] In some embodiments, please refer to the following: Figure 5 The charging coil TX has an inner hole around which it is arranged. Based on this, an airflow channel C extends from the middle portion 111 towards the base plate 12, and the airflow channel C passes through the aforementioned inner hole. A fan 60 is disposed within a portion of the airflow channel within the inner hole. The fan 60 is an axial fan, and the axial direction of the axial fan is consistent with the axial direction of the charging coil TX. The air inlet side a and the air outlet side c are the two sides of the axial fan arranged along its own axial direction. This structure is simple, and the fan 60 and the charging coil TX are located at the same height, which helps to reduce the thickness of the wireless charging base 100, achieving a thinner design.

[0095] It should be noted that the fan 60 can be not only an axial fan, but also other types of fans, such as centrifugal fans or cross-flow fans. When the fan 60 is a different type of fan, the positions of the first ventilation structure 11a and the second ventilation structure 12a, as well as the extension path of the airflow channel C, also change accordingly. Figure 5 The example provided is based on an axial fan, and this should not be considered a special limitation on the structural form of the fan 60.

[0096] Please continue to refer to this carefully. Figure 5 The magnetic shielding sheet 20 is used to reduce the magnetic field absorption of the charging coil TX by other metal structures (such as the bottom shell, fan 60, etc.). Simultaneously, the magnetic shielding sheet 20 can increase the magnetic field strength of the charging coil TX towards the top plate 11, giving the charging coil TX the directionality of energy emission, thereby increasing the electromagnetic induction distance. The magnetic shielding sheet 20 may include magnetic materials. For example, the magnetic shielding sheet 20 may include ferrite. In some other embodiments, the magnetic shielding sheet 20 may also include at least one of magnetic materials such as neodymium iron boron alloy (Nd-Fe-B), samarium, aluminum nickel cobalt alloy (Al-Ni-Co), iron silicon aluminum alloy (Fe-Si-Al), and permalloy (Ni-Fe).

[0097] In some embodiments, please refer to the following: Figure 5 and Figure 6The magnetic shielding sheet 20 includes a base plate portion 21, which is located on the side of the charging coil TX away from the middle portion 111. In some embodiments, the base plate portion 21 is stacked with the charging coil TX. The base plate portion 21 is used to reduce the magnetic field absorption of the charging coil TX by the metal structure (such as the base plate 12) on the side of the charging coil TX away from the middle portion 111, and can increase the magnetic field strength of the charging coil TX towards the top plate 11, so that the charging coil TX has the directionality of energy emission, thereby increasing the electromagnetic induction distance.

[0098] Based on the above embodiments, optionally, the base plate portion 21 is annular, and the base plate portion 21 includes an inner edge and an outer edge. Based on this, please continue reading... Figure 5 and Figure 6 The magnetic shielding sheet 20 also includes a first side plate portion 22 and a second side plate portion 23. The first side plate portion 22 is connected to the inner edge of the base plate portion 21 and is located on the inner periphery of the charging coil TX; the second side plate portion 23 is connected to the outer edge of the base plate portion 21 and is located on the outer periphery of the charging coil TX. In other words, the first side plate portion 22, the second side plate portion 23 and the base plate portion 21 form an annular groove, and the charging coil TX is accommodated in the annular groove.

[0099] The first side plate portion 22 is used to reduce the absorption of the magnetic field of the charging coil TX by the metal structure (such as the fan 60) located in the inner hole of the charging coil TX, and the second side plate portion 23 is used to reduce the absorption of the magnetic field of the charging coil TX by the metal structure on the outer periphery of the charging coil TX (such as the second side plate region 132). This can increase the magnetic field strength of the charging coil TX towards the middle portion 111, so that the charging coil TX has the directionality of energy emission, thereby increasing the electromagnetic induction distance.

[0100] Meanwhile, the base plate 21, the first side plate 22, and the second side plate 23 can also limit the charging coil TX, preventing the charging coil TX from being misaligned during installation or use.

[0101] In some other embodiments, the magnetic shielding sheet 20 may not have the first side plate portion 22 and the second side plate portion 23. In this case, the bottom plate portion 21 may be annular or a flat plate without a hole in the middle, and no specific limitation is made here. The following embodiments are described based on the magnetic shielding sheet 20 having the first side plate portion 22 and the second side plate portion 23, and this should not be regarded as a specific limitation on the structural form of the magnetic shielding sheet 20.

[0102] In some embodiments, please refer to the following: Figure 5The first side plate portion 22 is annular and surrounds the inner periphery of the charging coil TX. Furthermore, the first side plate portion 22 forms the sidewall of a portion of the airflow channel C within the aforementioned inner hole. In this way, the first side plate portion 22 comes into contact with the airflow within the airflow channel C. The heat generated when the charging coil TX operates can be conducted to the first side plate portion 22 and exchanged with the airflow within the airflow channel C. This shorter heat dissipation path improves the heat dissipation efficiency of the wireless charging base 100.

[0103] In some embodiments, please continue reading Figure 5 Along the Z-axis, the ends of the first side plate 22 and the second side plate 23 away from the bottom plate 21 can contact the inner surface of the intermediate portion 111. This results in a relatively large height for the first side plate 22 and the second side plate 23 along the Z-axis. The first side plate 22 can minimize the absorption of the magnetic field of the charging coil TX by the fan 60, and the second side plate 23 can minimize the absorption of the magnetic field of the charging coil TX by the second side plate region 132. Simultaneously, the heat conducted from the charging coil TX to the first side plate 22 and the second side plate 23 can be further conducted to the intermediate portion 111 and exchanged with the airflow in the cooling space Q through the intermediate portion 111, thereby further improving the heat dissipation efficiency of the wireless charging dock 100.

[0104] In some other embodiments, the ends of the first side plate portion 22 away from the bottom plate portion 21 and the ends of the second side plate portion 23 away from the bottom plate portion 21 may also be separated from the middle portion 111 by means of a heat-conducting medium or a gap, which is not specifically limited here.

[0105] Please continue reading. Figure 5 The magnet 70 is used to attract the electrical device 200, thereby fixing the position of the electrical device 200 during charging and preventing it from falling off the wireless charging base 100 due to the airflow in the cooling space Q. Simultaneously, the magnet 70 is also used to position the electrical device 200 so that the receiving coil RX is aligned with the charging coil TX. The magnet 70 can be a magnet or an electromagnet; this embodiment and the following embodiments are exemplified by using a magnet 70.

[0106] Please continue reading. Figure 5 The magnet 70 can be disposed inside the protrusion 1121. This ensures the cleanliness and uniformity of the outer surface of the top plate 11. Furthermore, compared to the middle portion 111, the protrusion 1121 is closer to the electrical device 200. By disposing of the magnet 70 inside the protrusion 1121, the distance between the magnet 70 and the electrical device 200 can be reduced, thereby increasing the magnetic attraction between the magnet 70 and the electrical device 200.

[0107] In some other embodiments, the magnet 70 may also be attached to the surface of the protrusion 1121 that is away from the base plate 12. In this way, the magnet 70 is closer to the electrical device 200, which can further increase the magnetic attraction between the magnet 70 and the electrical device 200.

[0108] In other embodiments, the magnet 70 may also be disposed within the recess 1122 or the intermediate portion 111. The following descriptions are based on the premise that the magnet 70 is disposed within the protrusion 1121.

[0109] For easier installation of the magnet 70 within the protrusion 1121, please refer to the following: Figure 5 and Figure 7 , Figure 7 for Figure 5 The schematic diagram shows the structure of the inner surface of the top cover of the wireless charging dock 100. In the top cover, a groove 1123 is provided on the inner surface of the top plate 11 at the position corresponding to the protrusion 1121. Please also refer to... Figure 5 and Figure 8 , Figure 8 For magnet 70 and Figure 7 The diagram shows the assembly structure of the top cover of the wireless charging dock 100, with the magnet 70 installed in the groove 1123. This facilitates the installation of the magnet 70 within the protrusion 1121.

[0110] In some other embodiments, the material of the protrusion 1121 may also cover the periphery of the magnet 70. In addition, the material of the protrusion 1121 may be formed on the surface of the magnet 70, without specific limitation.

[0111] The number of magnets 70 can be one or more. When there are multiple magnets 70, they are arranged circumferentially around the central portion 111. This improves the engagement stability of the electrical device 200 and provides better positioning for the device 200. Optionally, the number of magnets 70 is equal to the number of all protrusions 1121 on the edge portion 112, and each magnet 70 is embedded in one of the protrusions 1121 that make up all the protrusions 1121. For examples, please refer to the following. Figure 8 There are four protrusions 1121 and four magnets 70, with each magnet 70 embedded in one of the four protrusions 1121. This allows for full utilization of the protrusions 1121 to accommodate a larger number of magnets 70, thereby improving the engagement stability of the electrical equipment 200 and ensuring accurate positioning.

[0112] In some other embodiments, the number of magnets 70 may be less than the total number of protrusions 1121 described above, and no specific limitation is made here.

[0113] In some embodiments, please continue reading Figure 5 Along the radial direction of the charging coil TX, the second side plate portion 23 is located between the charging coil TX and the magnet 70. In this way, the second side plate portion 23 can separate the charging coil TX and the magnet 70 to a certain extent, avoiding interference between the magnetic field of the charging coil TX and the magnetic field of the magnet 70.

[0114] In some embodiments, please refer to the following: Figure 5 and Figure 9 , Figure 9 for Figure 5 The diagram shows the internal structure of the bottom shell of the wireless charging dock 100. In the bottom shell, the inner surface of the bottom plate 12 is provided with a first rib 122, a second rib 123, a third rib 124, and a fourth rib 125.

[0115] The first rib 122 and the third rib 124 are annular. The first rib 122 surrounds the second ventilation structure 12a, and the third rib 124 is located around the first rib 122. The second rib 123 connects the first rib 122 and the third rib 124. Please refer to the following for details. Figure 5 The first rib 122 and the second rib 123 are located between the base plate 12 and the charging component. The first rib 122 and the second rib 123 are used to cooperate with the middle part 111 to limit the charging component along the Z-axis direction.

[0116] The third rib 124 stops the charging component at its periphery to limit the charging component in the XY plane and prevent the charging component from being misaligned or moving.

[0117] The fourth rib 125 is located between the base plate 12 and the magnet 70. The fourth rib 125 is used to cooperate with the top wall of the protrusion 1121 to limit the magnet 70 along the Z-axis direction. On this basis, the two side walls of the protrusion 1121 can limit the magnet 70 in the XY plane.

[0118] Please refer to the above embodiments for details. Figure 5The first rib 122 forms another part of the sidewall of the airflow channel C. The inner diameter of the first rib 122 is larger than the inner diameter of the first side plate portion 22, and along the radial direction of the charging coil TX, the first rib 122 is located on the periphery of the first side plate portion 22. The portion of the bottom plate portion 21 located between the first rib 122 and the first side plate portion 22 forms another part of the sidewall of the airflow channel C. In this way, the airflow in the airflow channel C can not only contact and exchange heat with the first side plate portion 22, but also contact and exchange heat with the portion of the bottom plate portion 21 located between the first rib 122 and the first side plate portion 22, which can further improve the heat dissipation efficiency of the wireless charging stand 100. This structure is simple, has high stability, uses less material, and is lightweight, which can improve the convenience of the wireless charging stand 100 and reduce costs.

[0119] In some embodiments, the first protruding rib 122, the second protruding rib 123, the third protruding rib 124, and the fourth protruding rib 125 can be integrally formed with the base plate 12. This reduces the structural complexity of the wireless charging base 100 and simplifies assembly. In other embodiments, the first protruding rib 122, the second protruding rib 123, the third protruding rib 124, the fourth protruding rib 125, and the base plate 12 can be fabricated separately and assembled together. Alternatively, the first protruding rib 122 and the second protruding rib 123 can be fixed to the magnetic shielding sheet 20 in the charging assembly, the third protruding rib 124 can be fixed to the top plate 11, and the fourth protruding rib 125 can be fixed to the magnet 70; no specific limitations are imposed here.

[0120] Based on the above, in order to install the fan 60, please refer to some embodiments. Figure 9 The base plate 12 includes a main body 12b, a central part 12c, and multiple connecting parts 12d.

[0121] The first rib 122, the second rib 123, the third rib 124 and the fourth rib 125 are provided on the main body 12b, and the main body 12b is arranged around the central part 12c.

[0122] The second ventilation structure 12a is located between the main body 12b and the central part 12c, and the second ventilation structure 12a includes multiple ventilation sections. For an example, please refer to [link to example]. Figure 9 The second ventilation structure 12a includes a first ventilation section 12a1, a second ventilation section 12a2, and a third ventilation section 12a3, all of which are grille structures. These ventilation sections are circumferentially spaced around the central portion 12c, with a connecting portion 12d formed between adjacent bottom plates 12. The inner surface of the main body 12b has multiple fixing portions 12e located within the space surrounded by the first rib 122. The inner surface of the multiple connecting portions 12d has limiting portions 12f.

[0123] Based on the above, please refer back to the previous section. Figure 6 The wireless charging dock 100 also includes a mounting base 80 for supporting and securing the fan 60. The mounting base 80 includes a body 81 and a plurality of mounting arms 82 disposed on the body 81. See also... Figure 10 , Figure 10 for Figure 9 The bottom shell shown is Figure 6 The diagram shows the assembly of the fixing base 80 in the wireless charging dock 100. The main body 81 is located inside the central part 12c. Multiple fixing arms 82 are located inside multiple connecting parts 12d respectively. The multiple fixing arms 82 are fixed to the fixing part 12e. The fixing arms 82 are provided with limiting notches 83, which cooperate with the limiting part 12f to achieve limiting.

[0124] Based on the above, please refer to Figure 11 , Figure 11 for Figure 6 The diagram shows the assembly of the bottom shell, mounting base 80, and fan 60 in the wireless charging dock 100. The fan 60 is connected to the main body 81. This connection method is simple and provides excellent stability.

[0125] Please return to the reference. Figure 6 The adapter board 90 is a printed circuit board (PCB) or a flexible printed circuit board (FPC). The adapter board 90 is electrically connected to the charging coil TX and the fan 60, and also to the external cable. This enables the connection between the charging coil TX, the fan 60, and the external cable. The lead wire protective sleeve 00 is used to protect the external cable.

[0126] For details, please refer to Figure 12 , Figure 12 for Figure 6 The diagram shows an exploded view of the bottom shell, adapter plate 90, and lead wire protective sleeve 00 of the wireless charging dock 100. A first wire-passing notch 122a is provided on the first protruding rib 122, through which the first electrical connection wire (not shown) between the adapter plate 90 and the fan 60 passes. This avoids the thickness overlap between the first electrical connection wire and the first protruding rib 122, contributing to a thinner wireless charging dock 100.

[0127] Please return to the reference. Figure 6 The magnetic shielding sheet 20 has a second wire passage notch 20a, through which the second electrical connection wire (not shown in the figure) between the adapter plate 90 and the charging coil TX passes. This avoids the thickness overlap between the second electrical connection wire and the second wire passage notch 20a, which is beneficial to the thinning of the wireless charging base 100.

[0128] In some embodiments, please refer to the following: Figure 12 The inner surface of the base plate 12 is also provided with a fifth rib 126, which is located between the third rib 124 and the second side plate area 132. Please refer back to the previous section. Figure 7 The inner surface of the top plate 11 is also provided with a sixth rib 1124. (See also...) Figure 13 , Figure 13 for Figure 12 The diagram shows the assembly of the base shell, adapter plate 90, and lead wire protective sleeve 00. The adapter plate 90 is located between the fifth rib 126 and the sixth rib 1124. The fifth rib 126 and the sixth rib 1124 cooperate to limit the position of the adapter plate 90 along the Z-axis direction.

[0129] Please continue reading. Figure 13 The adapter plate 90 is also located between the third rib 124 and the second side plate region 132, the third rib 124 and the second side plate region 132 being used for radial (i.e., along the bottom shell) Figure 13 The adapter plate 90 is limited on both sides of direction D2). Please refer back to [link / reference]. Figure 12 The inner surface of the base plate 12 is also provided with positioning posts 127, and the adapter plate 90 is provided with positioning notches 91. Please refer to the following: Figure 13 The positioning post 127 is housed within the positioning notch 91, thereby extending circumferentially along the bottom shell (i.e., Figure 13 The direction D3) limits the adapter plate 90, thereby limiting the adapter plate 90 in the XY plane. This limiting method has a simple structure and low material cost.

[0130] In some embodiments, please continue reading Figure 12 Mounting holes 128 are provided on the second side panel area 132. (See also...) Figure 13 The lead wire protective sleeve 00 is inserted into the mounting hole 128. The lead wire protective sleeve 00 has a wire-passing hole 01 inside. The portion of the external cable connecting to the adapter plate 90 passes through this wire-passing hole 01. The lead wire protective sleeve 00 protects the external cable, preventing it from detaching from the adapter plate 90. Simultaneously, the lead wire protective sleeve 00 separates the external cable from the edge of the second side plate area 132 at the mounting hole 128, preventing the external cable from being scratched by the edge of the second side plate area 132 at the mounting hole 128.

[0131] Please see Figure 14 , Figure 14 for Figure 13 The bottom shell, circuit board and shown Figure 6The diagram shows the assembly structure of the charging coil TX and the magnetic shielding sheet 20 in the wireless charging dock 100. The adapter plate 90 is located on the outer periphery of the charging component. This avoids the thickness overlap between the adapter plate 90 and the charging component in the height direction of the wireless charging dock 100, which is beneficial to the thinning of the wireless charging dock 100.

[0132] Please see Figure 15 , Figure 15 This is a schematic diagram of the external cable 02 in a wireless charging dock 100 provided in some embodiments of this application. The external cable 02 includes an inner end 02a and an outer end 02b. In some embodiments, the inner end 02a of the external cable 02 passes through the wire hole 01 in the lead wire protective sleeve 00 into the interior of the housing 10 and connects to the adapter plate 90. The outer end 02b is located outside the housing 10. The outer end 02b is connected to a controller 04, which is used to control the operation of the charging coil TX and the fan 60. In other embodiments, the controller 04 may also be connected in series in the middle of the external cable 02, or disposed inside the housing 10.

[0133] The controller 04 is connected to an external terminal 03, which is used to access power and signals. The external terminal 03 includes, but is not limited to, a plug, a universal serial bus (USB) connector, a Type-C connector, a Type-A connector, or a Type-B connector.

[0134] In this way, the controller 04 is placed outside the wireless charging dock. The controller 04 generates a lot of heat, which avoids the heat of the controller 04 threatening the stability and safety of the electrical device 200.

[0135] In some other embodiments, the wireless charging dock 100 may omit the adapter plate 90, allowing the inner end 02a of the external cable 02 to extend into the interior of the housing 10 and be directly electrically connected to the charging coil TX and the fan 60. In still other embodiments, the wireless charging dock 100 may omit the lead wire protective sleeve 00.

[0136] Please see Figure 16 and Figure 17 , Figure 16 A perspective view of a wireless charging dock 100 provided in some embodiments of this application. Figure 17 for Figure 16 The wireless charging dock 100 shown is a perspective sectional view along the CC direction. Compared to Figures 3-6 The wireless charging dock 100 shown in this embodiment differs in that, in this embodiment, the first ventilation structure 11a is disposed on the side wall of the protrusion 1121 near the cooling space Q. The number of first ventilation structures 11a can be one or more. Figure 16 and Figure 17 In the illustrated embodiment, there are multiple first ventilation structures 11a. Specifically, the number of the multiple first ventilation structures 11a is equal to and corresponds one-to-one with the number of the multiple protrusions 1121, with each first ventilation structure 11a disposed on a corresponding protrusion 1121. This results in superior ventilation and cooling effects from the first ventilation structures 11a. In other embodiments, the number of first ventilation structures 11a may be less than the number of protrusions 1121; no specific limitation is made here.

[0137] and Figures 3-6 Please refer to the wireless charging dock shown in Figure 100 for details. Figure 17 In the wireless charging dock 100 shown in this embodiment, the second ventilation structure 12a is also disposed on the base plate 12.

[0138] Compared to Figures 3-6 The wireless charging dock 100 shown is... Figures 16-17 The differences between the wireless charging dock 100 shown also include: Please continue to refer to the following sections. Figure 17 An airflow channel C is arranged around the outer periphery of the charging assembly (consisting of the charging coil TX and the magnetic shielding sheet 20). A fan 60 is located on the side of the charging assembly away from the central portion 111. The fan 60 is a centrifugal fan. In some embodiments, please refer to... Figure 17 The air inlet side 'a' of the centrifugal fan is the outer periphery of the centrifugal fan, and this air inlet side 'a' is connected to multiple first ventilation structures 11a. The air outlet side 'b' of the centrifugal fan is the side of the centrifugal fan facing the second ventilation structure 12a, and this air outlet side 'b' is connected to the second ventilation structure 12a. When the fan 60 is working, air from the external environment enters the cooling space Q through the ventilation gap G, then further enters the airflow channel C through the first ventilation structure 11a, and is discharged through the second ventilation structure 12a. The airflow path is shown in [reference needed]. Figure 17 L3 in the middle.

[0139] In some other embodiments, the air inlet side a of the centrifugal fan can also be the side of the centrifugal fan facing the second ventilation structure 12a, and this air inlet side a is connected to the second ventilation structure 12a. The air outlet side b can also be the outer peripheral side of the centrifugal fan, and this air outlet side b is connected to multiple first ventilation structures 11a. When the fan 60 is working, air from the external environment enters the airflow channel C inside the housing 10 through the second ventilation structure 12a, and can be discharged to the cooling space Q through the first ventilation structure 11a, and further discharged to the external space through the ventilation gap G. The airflow path is the same as... Figure 17 The paths L3 are the same, but in opposite directions.

[0140] In the wireless charging dock 100 shown in this embodiment, the size of the fan 60 is not limited by the inner hole size of the charging component. The size of the fan 60 can be made larger to increase the airflow and thus improve the heat dissipation efficiency.

[0141] Compared to Figures 3-6 The wireless charging dock 100 shown is... Figures 16-17 The differences between the wireless charging dock 100 shown also include: Please refer to the following: Figure 17 A first liner K1 is provided in at least the angled region between the second side plate region 132 and the bottom plate 12 inside the bottom shell. The surface of the first liner K1 facing away from the bottom shell is an arc surface that is recessed towards the connection between the second side plate region 132 and the bottom plate 12. This arc surface forms part of the inner wall surface of the airflow channel C. In this way, the airflow channel C smoothly transitions in the angled region between the second side plate region 132 and the bottom plate 12, resulting in better airflow smoothness and reduced noise.

[0142] In the above embodiments, the material of the first inner liner K1 includes, but is not limited to, materials that are easy to form curved surfaces, such as plastic, rubber, and silicone. The first inner liner K1 can be fixed to the inner surface of the bottom shell by means of adhesive bonding, two-color injection molding, etc. In some other embodiments, when both the bottom shell material and the first inner liner K1 are plastic, the first inner liner K1 and the bottom shell can also be integrally molded to reduce the structural complexity of the wireless charging stand 100.

[0143] Similarly, please continue reading Figure 17 In the inner surface of the top cover, an arc-shaped transition surface connects the inner surface of the top plate 11 and the inner surface of the first side plate region 131. This arc-shaped transition surface is recessed at the connection between the outer surface of the top plate 11 and the outer surface of the first side plate region 131, forming part of the inner wall surface of the airflow channel C. In this way, the airflow channel C smoothly transitions in the angle region between the top plate 11 and the first side plate region 131, resulting in better airflow smoothness and further reducing noise.

[0144] Similarly, please continue reading Figure 17 The charging component has a second inner liner K2 on its outer periphery. The surface of the second inner liner K2 facing away from the charging component is a convex arc surface that arches towards the side plate 13. The airflow channel C is located between the convex arc surface and the side plate 13, and the convex arc surface forms part of the inner wall surface of the airflow channel C. In this way, the airflow channel C smoothly transitions on the outer periphery of the charging component, resulting in better airflow smoothness and further reducing noise.

[0145] In the above embodiments, the second inner liner K2 includes, but is not limited to, materials such as rubber and silicone that are easily formed into curved surfaces. The second inner liner K2 can be fixed to the magnetic shielding sheet 20 in the charging assembly by means of adhesive bonding, two-color injection molding, etc. In some other embodiments, when the material of the second inner liner K2 and the magnetic shielding sheet 20 are the same, the second inner liner K2 and the magnetic shielding sheet 20 can also be integrally formed to reduce the structural complexity of the wireless charging base 100.

[0146] Compared to Figures 3-6 The wireless charging dock 100 shown is... Figures 16-17 The differences between the wireless charging dock 100 shown also include: Please refer to the following: Figure 17 Along the axial direction of the charging coil TX (i.e., the Z-axis direction), the magnet 70 is clamped between the protrusion 1121 and the first side plate region 131. For easier installation of the magnet 70, please refer to [link to relevant documentation]. Figure 16 and Figure 17 In the top cover, the middle part 111, the recessed part 1122, and the first side plate area 131 are integrally formed as the main body of the top cover, while the protruding part 1121 is formed separately. The protruding part 1121 is assembled and connected to the main body of the top cover by means of adhesive, snap-fit, etc. This facilitates the installation of the magnet 70.

[0147] Compared to Figures 3-6 The wireless charging dock 100 shown is... Figures 16-17 The differences between the wireless charging dock 100 shown also include: Please refer to the following: Figure 17 The wireless charging dock 100 also includes a support plate N, which is located between the charging component and the fan 60, and is fixed relative to the housing 10. The fan 60 is connected between the support plate N and the base plate 12. The charging component is fixed to the support plate N. The support plate N is used to fix and support the fan 60 and the charging component, and this structural design is more reasonable.

[0148] Figures 16-17 The heat dissipation efficiency of the wireless charging dock 100 shown is related to the airflow generated by the fan 60; the greater the airflow generated by the fan 60, the higher the heat dissipation efficiency. In some embodiments, please refer to... Figure 18 , Figure 18 for Figures 16-17 The diagram shows the structure of the fan 60 in the wireless charging dock 100. The fan 60 has a diameter of 40 mm and a thickness of 4 mm. Simulations are performed below. Figure 18 The fan 60 shown is used in Figure 16 and Figure 17 The airflow generated within the wireless charging dock 100, with the fan 60 rotating at 4000 rpm and 6000 rpm respectively. Please refer to... Figure 19 , Figure 19 For simulation Figures 16-17The diagram shows the airflow distribution of the wireless charging dock 100 when the fan 60 rotates at 6000 rpm. Specifically, Figure 19 (a) in the diagram shows the wind field distribution on the bottom surface of the wireless charging dock 100. Figure 19 (b) shows the wind field distribution on the top surface of the wireless charging dock 100. The air volume obtained after simulation is recorded in Table 1 below. The unit of air volume is cubic feet per minute (cfm). As can be seen from Table 1 below, the air volume is relatively large, which can effectively dissipate heat.

[0149] Table 1

[0150] Rotational speed (unit: rpm) Air volume (unit: cfm) 4000 0.68 6000 0.83

[0151] Please see Figure 20 , Figure 20 For simulation Figures 16-17 The diagram shows the temperature distribution of the device 200 when the wireless charging dock 100 is charging the device 200 and the fan 60 inside the wireless charging dock 100 is rotating at 6000 rpm. Figure 20 It can be seen that the heat source of the electrical device 200 is inside (mainly generated by the internal integrated circuit), and the temperature of the area on the surface opposite the wireless charging base 100 is lower. The wireless charging base 100 has better heat dissipation performance for the electrical device 200.

[0152] Please see Figure 21 and Figure 22 , Figure 21 A perspective view of a wireless charging dock 100 provided in some embodiments of this application. Figure 22 for Figure 21 The wireless charging dock 100 shown is a perspective cross-sectional view along the DD direction. Compared to Figures 16-17 The wireless charging dock 100 shown in this embodiment differs in that: in this embodiment, the number of protrusions 1121 is even, and the even number of protrusions 1121 forms at least one pair of protrusions. Each pair of protrusions includes two protrusions 1121, which are symmetrically arranged with respect to the center of the top plate 11. Furthermore, the number of first ventilation structures 11a is equal to the number of pairs of protrusions 1121 and corresponds one-to-one. Each first ventilation structure 11a is disposed on one of the protrusions 1121 in a corresponding pair of protrusions, while the other protrusion 1121 does not have a first ventilation structure 11a.

[0153] For examples, please refer to the following text. Figure 21There are four protrusions 1121, forming two pairs of protrusions. Each pair of protrusions includes two protrusions 1121, which are symmetrically arranged with respect to the center of the top plate 11. Furthermore, the number of first ventilation structures 11a is equal to the number of pairs of protrusions 1121, both being two. Each first ventilation structure 11a is located on one of the protrusions 1121 in a corresponding pair, while the other protrusion does not have a first ventilation structure 11a. That is, only two of the four protrusions 1121 have a first ventilation structure 11a, while the other two do not.

[0154] Based on the above, please refer to the following: Figure 22 The air inlet side a of the fan 60 faces the second ventilation structure 12a and is connected to the second ventilation structure 12a. The air outlet side b of the centrifugal fan is the outer peripheral side of the centrifugal fan and is connected to multiple first ventilation structures 11a. When the fan 60 is working, air from the outside environment enters the airflow channel C inside the housing 10 through the second ventilation structure 12a, and can then be discharged to the cooling space Q through the first ventilation structure 11a, and further discharged to the external space through the ventilation gap G. See [link to airflow path]. Figure 22 L4 in the middle.

[0155] In this way, the airflow will not collide with each other after entering the cooling space Q through the first ventilation structure 11a, thereby reducing noise.

[0156] In some other embodiments, the air inlet side a of the centrifugal fan can also be the outer peripheral side of the centrifugal fan. This air inlet side a is connected to multiple first ventilation structures 11a, and the air outlet side b of the centrifugal fan faces the second ventilation structure 12a and is connected to the second ventilation structure 12a. When the fan 60 is working, air from the external environment enters the cooling space Q through the ventilation gap G, and then further enters the airflow channel C through the first ventilation structure 11a, and is discharged through the second ventilation structure 12a. The airflow path is consistent with... Figure 22 The paths L4 are the same, but in opposite directions.

[0157] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A wireless charging stand, characterized in that, include: A housing, the housing including opposing top and bottom plates and side plates connected between the top and bottom plates; in The top plate includes a middle portion and an edge portion surrounding the middle portion, wherein the edge portion includes a plurality of protrusions and a plurality of recesses, and the plurality of protrusions and the plurality of recesses are arranged alternately in sequence along the circumference of the middle portion; The plurality of protrusions and the middle portion form a cooling space; The protrusion is provided with a first ventilation structure on the side wall near the cooling space, and a second ventilation structure is provided on the bottom plate; the interior of the housing is provided with an airflow channel, one end of which is connected to the first ventilation structure and the other end of which is connected to the second ventilation structure. A fan is located within the airflow channel. The fan includes an air inlet side and an air outlet side. One of the air inlet side and the air outlet side is connected to the first ventilation structure, and the other is connected to the second ventilation structure. A charging assembly includes a charging coil located inside the housing and stacked with the intermediate portion; an airflow channel is arranged around the outer periphery of the charging assembly. The fan is located on the side of the charging assembly away from the middle part. The fan is a centrifugal fan, and the axis of the centrifugal fan is consistent with the axis of the charging coil. The outer periphery of the centrifugal fan is one of the air inlet side and the air outlet side, and the side of the centrifugal fan facing the second ventilation structure is the other of the air inlet side and the air outlet side. The number of protrusions is even, and the even number of protrusions forms at least one pair of protrusions. Each pair of protrusions includes two protrusions, and the two protrusions are symmetrically arranged with respect to the center of the top plate. The number of the first ventilation structures is equal to the number of pairs of protrusions and corresponds one-to-one. Each first ventilation structure is disposed on one of the protrusions in the corresponding pair of protrusions.

2. The wireless charging dock according to claim 1, characterized in that, Along the direction from the top plate to the bottom plate, the side plate includes a first side plate region and a second side plate region arranged sequentially. The first side plate area is connected to the top plate to form a top cover, and the second side plate area is connected to the bottom plate to form a bottom shell.

3. The wireless charging stand according to claim 2, characterized in that, The bottom shell contains at least a first lining in the angled region between the second side plate region and the bottom plate. The surface of the first inner liner facing away from the bottom shell is an arc surface that is recessed towards the connection between the second side plate area and the bottom plate, and the arc surface forms part of the inner wall surface of the airflow channel.

4. The wireless charging stand according to claim 2 or 3, characterized in that, In the inner surface of the top cover, an arc-shaped transition surface connects the inner surface of the top plate and the inner surface of the first side plate area; The arc-shaped transition surface is recessed at the connection between the outer surface of the top plate and the outer surface of the first side plate area, and the arc-shaped transition surface forms part of the inner wall surface of the airflow channel.

5. The wireless charging dock according to any one of claims 1-4, characterized in that, The outer periphery of the charging component is provided with a second inner liner. The surface of the second inner liner facing away from the charging component is a convex arc surface that arches towards the side plate. The airflow channel is located between the convex arc surface and the side plate, and the convex arc surface forms part of the inner wall surface of the airflow channel.

6. The wireless charging dock according to any one of claims 2-4, characterized in that, Also includes: A magnet is disposed within the protrusion.

7. The wireless charging stand according to claim 6, characterized in that, Along the axial direction of the charging coil, the magnet is clamped between the protrusion and the first side plate area. The first side plate area, the recess, and the middle part are integrally formed as the top cover body, and the protrusion is assembled and connected to the top cover body.

8. The wireless charging stand according to any one of claims 1-7, characterized in that, The charging coil is in contact with the middle portion; Alternatively, thermal paste, thermal pads, or thermal liquid may be provided between the charging coil and the intermediate portion.

9. The wireless charging stand according to claim 8, characterized in that, The material of at least the middle portion of the top plate includes ceramic and thermally conductive plastic.

10. The wireless charging stand according to any one of claims 1-9, characterized in that, Also includes: An adapter plate is located on the outer periphery of the charging assembly, and the adapter plate is electrically connected to the charging coil and the fan.

11. The wireless charging stand according to any one of claims 1-10, characterized in that, Also includes: An external cable includes an internal terminal and an external terminal. The internal terminal is located inside the housing, and the external terminal is located outside the housing. The internal terminal is electrically connected to the charging coil and the fan. A controller, connected to the external terminal, is used to control the operation of the charging coil and the fan; An external terminal is connected to the controller.

12. A wireless charging system, characterized in that, The device includes an electrical appliance and a wireless charging dock as described in any one of claims 1-11; the electrical appliance includes a receiving coil, and the charging coil of the wireless charging dock is used to charge the device in conjunction with the receiving coil.

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