Ultrathin wireless charger with high heat dissipation performance

Abstract

The embodiment of the invention relates to the technical field of wireless charging, and discloses an ultrathin wireless charger with high heat dissipation performance, and the wireless charger comprises a housing which is provided with a ventilation opening; the supporting plate is arranged in the shell, the supporting plate is a sheet with a certain area, a charging coil is attached to one face of the supporting plate, and a PCB and fan blades are attached to the other face of the supporting plate; the fan blades are used for rotating under the control of the PCB and driving air in the shell to flow during rotation; air in the shell is driven by the fan blades to pass through the PCB and then flows out of the ventilation opening. By means of the mode, the thickness of the wireless charger is reduced, and meanwhile the heat dissipation effect of the wireless charger is improved.

Description

Technical Field

[0001] The present application relates to the technical field of wireless charging, and in particular to an ultra-thin wireless charger with high heat dissipation performance. Background Art

[0002] With the advancement of science and technology and the improvement of people's living standards, people are using electronic devices more and more widely, and the convenience of charging electronic devices has also attracted much attention. In the prior art, wireless chargers are usually used to achieve the convenience of charging electronic devices.

[0003] In order to meet the heat dissipation requirements of wireless chargers when in use, more and more wireless chargers are equipped with heat dissipation fans, making the thickness of wireless chargers generally above 12 mm. Among them, the thickness of relatively thin wireless chargers is maintained at 10 mm to 12 mm. Therefore, there is still room for improvement in the thickness of existing wireless chargers. In addition, the fan blades of existing wireless chargers mainly blow external wind toward the shell of the wireless charger to cool the charging coil in the wireless charger and the charged electronic device. However, this heat dissipation method will cause heat to accumulate inside the shell. Therefore, there is still room for improvement in the heat dissipation performance of existing wireless chargers.

[0004] In summary, how to improve the heat dissipation performance of the wireless charger while reducing the thickness of the wireless charger has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides an ultra-thin wireless charger with high heat dissipation performance, which is used to improve the heat dissipation effect of the wireless charger while reducing the thickness of the wireless charger.

[0006] According to one aspect of an embodiment of the present application, there is provided an ultra-thin wireless charger with high heat dissipation performance, the wireless charger comprising: a shell, on which a vent is provided; a support plate, arranged inside the shell, the support plate is a thin sheet with a certain area, one side of the support plate is bonded with a charging coil, and the other side is bonded with a PCB board and fan blades; the fan blades are used to rotate under the control of the PCB board and drive the air flow in the shell when rotating; the air in the shell flows out from the vent after passing through the PCB board under the drive of the fan blades.

[0007] Preferably, the vent includes an air inlet and multiple air outlets; the PCB board is an annular structure, and the fan blades are arranged in the inner circle of the annular structure; the air inlet is aligned with the inner circle of the annular structure, and the multiple air outlets are aligned with the PCB board and distributed around the edge of the PCB board; the edge of the fan blade is perpendicular to the rotation plane formed by the rotation of the fan blade; under the rotation of the fan blade, the air outside the shell passes through the air inlet and flows into the interior of the shell, and the air inside the shell passes through the PCB board and flows out from the multiple air outlets to the outside of the shell.

[0008] Preferably, the wireless charger also includes a motor, which is fixed on a side of the support plate that is attached to the PCB board; the motor includes an output shaft, the fan blades are fixed to the output shaft, the output shaft is perpendicular to the board surface of the PCB board, and is used to drive the fan blades to rotate to form a rotating plane; the rotating plane formed by the rotation of the fan blades is in the same plane as the PCB board surface.

[0009] Preferably, a cylindrical mounting portion is provided on the other surface of the support plate, the mounting portion is arranged at the inner circle of the annular structure, and the motor is sleeved in the mounting portion.

[0010] Preferably, the motor is embedded in the support plate, and the output shaft of the motor protrudes from the plate surface of the support plate and is connected to the fan blades.

[0011] Preferably, the PCB board is used to generate a control signal and send the control signal to the motor to control the output of the motor; a side of the support plate that is in contact with the PCB board is recessed to form a first wiring area; the wireless charger also includes a wiring, which is fixed to the first wiring area, one end of which is electrically connected to the PCB board, and the other end of which is electrically connected to the motor, for transmitting the control signal from the PCB board to the motor.

[0012] Preferably, the edge of one side of the support plate that is attached to the PCB board is recessed to form a second wiring area; the shell includes a bottom shell and a front shell, the front shell covers the side of the support plate that is attached to the charging coil; the bottom shell covers the side of the support plate that is attached to the PCB board, and a charging port is provided on the bottom shell, the charging port is aligned with the second wiring area, and the second wiring area is used to connect an external power supply to the PCB board.

[0013] Preferably, the shell surface of the bottom shell has a certain area, the side wall of the bottom shell has a certain height, the air inlet is arranged on the shell surface of the bottom shell and has a certain area, and the plurality of air outlets are arranged on the side wall of the bottom shell.

[0014] Preferably, the wireless charger also includes a magnet block, which is arranged between the surface shell and the support plate, and the surface shell and the support plate form a clamping force on the magnet block.

[0015] Preferably, a barrier strip protrudes from one surface of the support plate, the charging coil is located on one side of the barrier strip and distributed close to the center of the support plate, and the magnet block is located on the other side opposite to the barrier strip and distributed close to the edge of the support plate; the barrier strips are connected end to end to form a ring, and the outer side of the charging coil is clamped on the barrier strip.

[0016] In the embodiment of the present application, a charging coil is attached to one side of a support plate, and a PCB board and fan blades are attached to the other side, so that there is no need to set up a support frame for the charging coil, PCB board and fan blades separately inside the wireless charger, thereby saving multiple support frames and reducing the thickness of the wireless charger; and, the air in the shell is set to flow out from the vent after passing through the PCB board under the drive of the fan blades, and the PCB board can be directly dissipated through the fan blades; the charging coil is attached to one side of the support plate, so that the heat generated by the charging coil during use can be efficiently transferred to the support plate, and the PCB board is attached to the other side of the support plate, so that the heat of the support plate can be efficiently transferred to the PCB board, and then the PCB board is directly dissipated through the fan blades, so that the heat generated by the charging coil and the heat generated by the PCB board can be taken out from the vent to the outside of the shell of the wireless charger together, thereby avoiding heat accumulation inside the shell, and greatly improving the heat dissipation performance of the wireless charger.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A three-dimensional diagram of a wireless charger provided by an embodiment of the present application is shown; Figure 2 A three-dimensional view of a wireless charger provided by an embodiment of the present application at another viewing angle is shown; Figure 3 The internal structure diagram of the wireless charger provided by the embodiment of the present application is shown; Figure 4 An exploded view of a wireless charger provided in an embodiment of the present application is shown.

[0019] The reference numerals in the specific implementation manner are as follows: 1. Wireless charger; 10. Shell; 11. Surface shell; 12. Bottom shell; 13. Ventilation port; 131. Air inlet; 132. Air outlet; 133. Charging port; 21. Magnet block; 22. Charging coil; 23. Barrier strip; 30. Support plate; 31. Mounting portion; 32. First wiring area; 33. Second wiring area; 40. PCB board; 50. Motor; 60. Fan blades. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0022] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0026] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0027] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] This application is applicable to wireless charging of electronic devices, for example, Apple mobile phones.

[0029] The present application embodiment provides an ultra-thin wireless charger with high heat dissipation performance. Figure 1~Figure 4 The wireless charger 1 includes: a shell 10, on which a vent 13 is provided; a support plate 30, which is arranged inside the shell 10, and is a thin sheet with a certain area, with a charging coil 22 attached to one side of the support plate 30, and a PCB (Printed Circuit Board) and a fan blade 60 attached to the other side; the fan blade 60 is used to rotate under the control of the PCB board 40, and drive the air in the shell 10 to flow when rotating; the air in the shell 10 flows out from the vent 13 after passing through the PCB board 40 under the drive of the fan blade 60.

[0030] There is no protective shell outside the fan blade 60, and the fan blade 60 is exposed on the support plate 30; further, the fan blade 60 can be an integral component with the support plate 30, or can be two separable components.

[0031] A ventilation and heat dissipation channel is formed in the shell 10, specifically, the vent 13 includes an air inlet 131 and a plurality of air outlets 132; the PCB board 40 is an annular structure, and the fan blades 60 are arranged on the inner circle of the annular structure; the air inlet 131 is aligned with the inner circle of the annular structure, and the plurality of air outlets 132 are aligned with the PCB board 40 and are distributed around the edge of the PCB board 40; under the rotation of the fan blades 60, the air outside the shell 10 passes through the air inlet 131 and flows into the interior of the shell 10, and the air inside the shell 10 passes through the PCB board 40 and flows out from the plurality of air outlets 132 to the outside of the shell 10.

[0032] Preferably, the edge of one side of the support plate 30 that is in contact with the PCB board 40 is recessed to form a second wiring area 33; the shell 10 includes a bottom shell 12 and a front shell 11, and the front shell 11 covers the side of the support plate 30 that is in contact with the charging coil 22; the bottom shell 12 covers the side of the support plate 30 that is in contact with the PCB board 40, and a charging port 133 is provided on the bottom shell 12, and the charging port 133 is aligned with the second wiring area 33, and the second wiring area 33 is used to connect an external power supply to the PCB board 40.

[0033] Preferably, the shell surface of the bottom shell 12 has a certain area, the side wall of the bottom shell 12 has a certain height, the air inlet 131 is arranged on the shell surface of the bottom shell 12 and has a certain area, and the plurality of air outlets 132 are arranged on the side wall of the bottom shell 12 .

[0034] Preferably, the wireless charger 1 further includes a magnet block 21 , and the magnet block 21 is disposed between the surface shell 11 and the support plate 30 , and the surface shell 11 and the support plate 30 form a clamping force for the magnet block 21 .

[0035] Preferably, the PCB board 40 is in a standard circular ring structure, and the inner circle of the circular ring structure corresponds to the inner circle of the annular structure.

[0036] When charging an electronic device, the electronic device is first attached to the face shell 11. The PCB board 40 senses the electronic device and controls the charging coil 22. The charging coil 22 generates an electromagnetic signal under the control of the PCB board 40 and uses the principle of electromagnetic wave induction to charge the electronic device.

[0037] When the wireless charger 1 is used, part of the heat in the wireless charger 1 is generated by the charging coil 22, and the other part is generated by the PCB board 40. In addition, the electronic device may also generate heat during the wireless charging process and transfer the heat to the housing 11.

[0038] As for the heat in the wireless charger 1 , since the fan blades 60 directly dissipate the heat from the PCB board 40 , the heat in the wireless charger 1 will be quickly transferred to the PCB board 40 , and the fan blades 6 will quickly dissipate the heat from the PCB board 40 .

[0039] Specifically, please combine Figure 2 and Figure 3 For reference, the edge of the fan blade 60 is perpendicular to the rotation plane formed by the rotation of the fan blade 60, so that the front of the rotation plane of the fan blade 60 is the wind inlet surface, and the side relative to the rotation plane is the wind outlet surface; the PCB board 40 is an annular structure, and the fan blade 60 is arranged in the inner ring of the annular structure, so that the components on the PCB board 40 that generate heat can be located on the wind outlet surface of the fan blade 60. That is, under the rotation of the fan blade 60, the low-temperature wind outside the housing 10 passes through the air inlet 131 and enters the housing 10. Therefore, the low-temperature wind flowing into the housing 10 will blow through the PCB board 40 under the drive of the fan blade 60, thereby, the heat of the components on the PCB board 40 is transferred to the low-temperature wind, the temperature of the low-temperature wind increases, and the low-temperature wind carries the heat of the PCB board 40 and flows out of the housing 10 through the air outlet 132, so as to achieve heat dissipation of the PCB board 40 through the fan blade 60.

[0040] Please continue reading Figure 3 When the PCB board 40 is quickly cooled by the fan blades 60, a temperature difference is formed between the PCB board 40 and the charging coil 22. By fitting the charging coil 22 to the support plate 30, the heat of the charging coil 22 can be quickly transferred to the support plate 30. By fixing the PCB board 40 to the support plate 30, the heat of the support plate 30 can be quickly transferred to the PCB board 40. The fan blades 60 are then used to dissipate the heat of the PCB board 40, thereby dissipating the heat of multiple heating structures in the wireless charger 1 together through the fan 60.

[0041] Furthermore, considering the heat transferred from the electronic device to the surface shell 11, part of the heat can be directly transferred to the external low-temperature air, and the other part can also be transferred to the PCB board 40 and dissipated by the fan blades 60.

[0042] Therefore, the wireless charger 1 can have extremely high heat dissipation performance.

[0043] The specific heat dissipation performance of the wireless charger in the prior art can be referred to Table 1, and the specific heat dissipation performance of the wireless charger 1 provided in the embodiment of the present application can be referred to Table 2. The test environment of Table 1 and Table 2 is under a normal temperature of 25°C. The wireless charger in the prior art and the wireless charger 1 provided in the embodiment of the present application are placed on a wooden table to charge a mobile phone (the mobile phone is not in a mobile phone case and is placed in the center). The prototype has a rated input of 15V, an output fixture of 25w, and an iPhone mobile phone; the data is measured when the temperature curve is aged to a stable state.

[0044] From Table 1, it can be found that the actual temperature of the wireless charger in the prior art is generally above 55°C when charging; and from Table 2, it can be found that the actual temperature of the wireless charger 1 provided in the present application is generally below 40°C when charging. Table 1 Table 2 In order to reduce the thickness of the wireless charger 1, the support plate 30 can be a thin sheet with a certain area, one side of the support plate 30 is attached to the charging coil 22, and the other side is attached to the PCB (Printed Circuit Board) and the fan blades 60. Furthermore, the edge of the side of the support plate 30 attached to the PCB 40 is recessed to form a second wiring area 33 to reduce the thickness of the space required for wiring.

[0045] Preferably, the PCB board 40 is used to generate a control signal and send the control signal to the motor 50 to control the output of the motor 50; a side of the support plate 30 that is in contact with the PCB board 40 is recessed to form a first wiring area 32; the wireless charger 1 also includes a wiring, which is fixed to the first wiring area 32, one end of which is electrically connected to the PCB board 40, and the other end of which is electrically connected to the motor 50, for transmitting the control signal from the PCB board 40 to the motor 50.

[0046] Similarly, one side of the support plate 30 that is in contact with the PCB board 40 is recessed to form a first wiring area 32, which can also reduce the thickness of the space required for wiring.

[0047] Preferably, a barrier strip 23 protrudes from one surface of the support plate 30, the charging coil 22 is located on one side of the barrier strip 23 and distributed close to the center of the support plate 30, and the magnet block 21 is located on the other side opposite to the barrier strip 23 and distributed close to the edge of the support plate 30; the barrier strip 23 is connected end to end to form a ring shape, and the outer side of the coil of the charging coil 22 is clamped to the barrier strip 23.

[0048] By attaching the magnet block 21 and the charging coil 22 to one side of the support plate 30 and attaching the PCB board and the fan blade 60 to the other side, multiple support structures are combined into one support plate 30, thereby greatly reducing the thickness of the wireless charger 1.

[0049] Preferably, the wireless charger 1 also includes a motor 50, which is fixed to a side of the support plate 30 that is attached to the PCB board 40; the motor 50 includes an output shaft, and the fan blades 60 are fixed to the output shaft, and the output shaft is perpendicular to the board surface of the PCB board 40, and is used to drive the fan blades 60 to rotate to form a rotating plane; the rotating plane formed by the rotation of the fan blades 60 is in the same plane as the board surface of the PCB board 40.

[0050] By making the PCB board 40 into a ring structure and arranging the fan blades 60 in the inner ring of the ring structure, the rotation plane formed by the rotation of the fan blades 60 can be located in the same plane as the board surface of the PCB, thereby reducing the space thickness required to be occupied by the fan blades 40.

[0051] By forming a first wiring area 32 by recessing a side of the support plate 30 that is in contact with the PCB board 40 , the thickness of the space required for wiring can also be reduced.

[0052] like Figure 3 As shown, the other surface of the support plate 30 has a cylindrical mounting portion 31, and the mounting portion 31 is arranged at the inner circle of the annular structure. The motor 50 is sleeved in the mounting portion 31 to improve the stability of the motor 50; or, the motor 50 is embedded in the support plate 30, and the output shaft of the motor 50 protrudes from the plate surface of the support plate 30 and is connected to the fan blades 60 to reduce the thickness of the space required to be occupied by the motor 50.

[0053] In the embodiment of the present application, the support plate 30 is set as a thin sheet with a certain area, and the charging coil 22 is attached to one side of the support plate 30, and the PCB board and the fan blade 60 are attached to the other side, so as to combine multiple bracket structures into one support plate 30, so that the actual data shows that the thickness range of the wireless charger 1 is between 6.7 mm and 6.8 mm, thereby greatly reducing the thickness of the wireless charger 1; by setting the air in the shell 10 to pass through the PCB board 40 and then flow out from the vent 13 under the drive of the fan blade 60, the PCB board 40 can be directly dissipated through the fan blade 60; one side of the support plate 30 is attached with the charging coil 22, so that the heat generated by the charging coil 22 during use can be efficiently transferred to the support plate 30, and the other side of the support plate 30 is attached with the PCB board 40. The support plate 40 allows the heat of the support plate 30 to be efficiently transferred to the PCB board 40, and then the PCB board 40 is directly cooled through the fan blades 60, so that the heat generated by the charging coil 22 and the heat generated by the PCB board 40 can be taken out from the vent 13 to the outside of the shell 10 of the wireless charger 1, thereby avoiding heat accumulation inside the shell 10, and greatly improving the heat dissipation performance of the wireless charger 1.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An ultra-thin wireless charger with high heat dissipation performance, characterized in that: include: A housing, wherein a vent is provided on the housing; A support plate is arranged inside the shell, the support plate is a thin sheet with a certain area, one side of the support plate is attached to the charging coil, and the other side of the support plate is attached to the PCB board and the fan blade; The fan blade is used to rotate under the control of the PCB board and drive the air flow in the housing when rotating; The air in the housing is driven by the fan blades and then flows out from the vent after passing through the PCB board.

2. The wireless charger according to claim 1, characterized in that: The vent includes an air inlet and a plurality of air outlets; The PCB board is in an annular structure, and the fan blades are arranged in the inner circle of the annular structure; The air inlet is aligned with the inner circle of the annular structure, and the multiple air outlets are aligned with the PCB board and are distributed around the edge of the PCB board; The edge of the fan blade is perpendicular to the rotation plane formed by the rotation of the fan blade; As the fan blades rotate, the air outside the shell flows into the interior of the shell through the air inlet, and the air inside the shell flows out from the multiple air outlets to the outside of the shell after passing through the PCB board.

3. The wireless charger according to claim 2, characterized in that: The wireless charger further comprises a motor, and the motor is fixed to a side of the support plate to which the PCB board is attached; The motor comprises an output shaft, the fan blades are fixed to the output shaft, the output shaft is perpendicular to the surface of the PCB board, and is used to drive the fan blades to rotate to form a rotating plane; The rotation plane formed by the rotation of the fan blades is located in the same plane as the board surface of the PCB board.

4. The wireless charger according to claim 3, characterized in that: A cylindrical mounting portion is provided on the other surface of the support plate. The mounting portion is arranged at the inner circle of the annular structure, and the motor is sleeved in the mounting portion.

5. The wireless charger according to claim 3, characterized in that: The motor is embedded in the support plate, and the output shaft of the motor protrudes from the plate surface of the support plate and is connected to the fan blade.

6. The wireless charger according to claim 3, characterized in that: The PCB board is used to generate a control signal and send the control signal to the motor to control the output of the motor; A side of the support plate that is in contact with the PCB board is recessed to form a first wiring area; The wireless charger also includes a wiring, which is fixed to the first wiring area, has one end electrically connected to the PCB board, and the other end electrically connected to the motor, and is used to transmit the control signal from the PCB board to the motor.

7. The wireless charger according to claim 3, characterized in that: The edge of one side of the support plate that is in contact with the PCB board is recessed to form a second wiring area; The shell comprises a bottom shell and a front shell, wherein the front shell covers a side of the support plate on which the charging coil is attached; The bottom shell covers a side of the PCB board attached to the support plate, and a charging port is opened on the bottom shell, and the charging port is aligned with the second wiring area, and the second wiring area is used to connect the external power supply to the PCB board.

8. The wireless charger according to claim 7, characterized in that: The shell surface of the bottom shell has a certain area, the side wall of the bottom shell has a certain height, the air inlet is arranged on the shell surface of the bottom shell and has a certain area, and the multiple air outlets are arranged on the side wall of the bottom shell.

9. The wireless charger according to claim 7, characterized in that: The wireless charger also includes a magnet block, which is arranged between the surface shell and the support plate, and the surface shell and the support plate form a clamping force on the magnet block.

10. The wireless charger according to claim 9, characterized in that: A barrier strip protrudes from one surface of the support plate, the charging coil is located on one side of the barrier strip and distributed close to the center of the support plate, and the magnet block is located on the other side opposite to the barrier strip and distributed close to the edge of the support plate; the barrier strips are connected end to end to form a ring shape, and the outer side of the coil of the charging coil is clamped on the barrier strip.

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