Wireless charging device

Abstract

The utility model discloses a wireless charging device. The wireless charging device comprises a shell, a wireless charging module and a cooling fan, wherein the wireless charging module and the cooling fan are arranged in the shell; a bearing platform is arranged on the outer surface of the shell, a supporting part for placing external charging equipment is arranged on the bearing platform, and heat dissipation holes are formed in the bearing platform; and the shell is also provided with an air inlet hole. Through the arrangement of the supporting part, a heat dissipation gap exists between the external charging equipment placed on the supporting part and the bearing platform, and through the arrangement of the heat dissipation fan, air is guided to flow and penetrate through the equipment shell, and finally gathered heat is discharged through the heat dissipation gap. Therefore, the external charging device is kept at a low temperature in the charging process, the problem that the charging speed is affected due to overheating is avoided, and the use experience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging power supplies, and particularly relates to a wireless charging device. Background Art

[0002] In the current field of wireless charging technology, although it brings great convenience to users, there are heat dissipation problems during the charging process of the device. Since the wireless charging device generates a large amount of heat during operation, the wireless charging device remains at a high temperature during charging, which not only reduces the charging efficiency, but also may affect the service life of the device and even pose a safety hazard.

[0003] Currently, wireless charging devices on the market generally adopt natural heat dissipation or simple heat dissipation designs, and these methods often cannot meet the heat dissipation requirements during high-power charging. In addition, the existing heat dissipation solutions also have certain limitations in design, such as low heat dissipation efficiency, uneven heat dissipation, and difficulty in achieving effective heat exchange in some compact device designs. These problems limit the further development of wireless charging technology and the improvement of user experience. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a wireless charging device with a simple structure and high heat dissipation efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A wireless charging device, comprising:

[0007] A housing and a wireless charging module and a cooling fan disposed within the housing;

[0008] A bearing platform is provided on the outer surface of the housing, and a support portion for placing an external charging device is provided on the bearing platform, and heat dissipation holes are provided on the bearing platform;

[0009] The wireless charging module is located between the cooling fan and the bearing platform, and an air inlet hole is provided on one side of the housing close to the cooling fan, and the cooling fan is used to guide air flow through the heat dissipation holes to dissipate heat from the external charging device.

[0010] Further, the support portion is a boss protruding from the bearing platform, and the heat dissipation holes are arranged along the circumference of the boss.

[0011] Further, the boss is cylindrical, the heat dissipation holes are arranged along the circumference of the boss and are arc-shaped; the height of the boss is 0.1 - 0.5 mm.

[0012] Further, the housing includes an upper shell, a middle shell, and a lower shell; the bearing platform is located on the upper shell, the heat dissipation fan and the wireless charging module are fixed to the middle shell through a support frame, and a plurality of air inlets are provided on the lower shell.

[0013] Further, it includes a first support frame for fixing the heat dissipation fan and a second support frame for fixing the wireless charging module; an air flow channel is formed between the first support frame and the second support frame, so that after the air flow passes through the air flow channel, it is discharged through the heat dissipation holes.

[0014] Further, the wireless charging module includes a coil and a PCB board electrically connected to the coil, and the coil is located on the side facing the bearing platform; a heat insulation member is provided between the heat dissipation fan and the wireless charging module.

[0015] Further, an indicator light and a charging port electrically connected to the PCB board are provided on the middle shell.

[0016] Further, the middle position of the lower shell protrudes from the plane where the lower shell is located.

[0017] Further, a first magnetic ring is provided inside the housing near the bearing platform and along the circumference of the wireless charging module, and is used to cooperate with a second magnetic ring of an external charging device to fix the external charging device.

[0018] Further, the first magnetic ring is formed by arranging multiple magnets.

[0019] The beneficial effects of the present utility model are:

[0020] A wireless charging device of the present utility model, by providing a support portion, there is a heat dissipation gap between the external charging device placed on the support portion and the bearing platform, creating a necessary heat dissipation space between the external charging device placed thereon and the bearing platform, and guiding the air flow through the heat dissipation fan to pass through the device housing and finally discharging the accumulated heat through the heat dissipation gap. This not only helps to take away the heat generated inside the housing, but also effectively reduces the overheating problem that may be caused by heat accumulation between the bearing platform and the external charging device. It enables the external charging device to maintain a lower temperature during the charging process, does not have the problem of affecting the charging speed due to overheating, and greatly improves the user experience. Description of the Drawings

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 It is a top view schematic diagram of the present utility model;

[0023] Figure 2 It is a bottom view schematic diagram of the present utility model;

[0024] Figure 3 is a schematic diagram of the explosion structure of the present utility model;

[0025] Figure 4 is a front view schematic diagram of the present utility model;

[0026] Figure 5 is Figure 4 a schematic cross-sectional view in the A-A direction in

[0027] Among them,

[0028] 1. Housing;

[0029] 11. Upper shell; 111. Bearing platform; 112. Support part; 113. Heat dissipation holes;

[0030] 12. Middle shell; 121. Charging port; 122. Indicator light; 123. First support frame; 124. Second support frame;

[0031] 13. Lower shell; 131. Air inlet holes;

[0032] 2. Wireless charging module; 21. Coil; 22. PCB board;

[0033] 3. Heat dissipation fan;

[0034] 4. First magnetic ring. Specific embodiments

[0035] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the possibility of forming a more optimal connection structure by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the present invention can be combined interactively without conflicting with each other.

[0036] Although wireless chargers bring convenience, they also have some disadvantages, especially the heat dissipation problem. Among them, the energy conversion efficiency during wireless charging is not 100%, and part of the electric energy will be converted into heat energy, resulting in the charger and the external charging device getting hot. For example, a 15-watt charger may generate 5 watts of heat, and a 30-watt charger may generate 8 watts of heat. The present utility model provides a wireless charging device with a heat dissipation function, which can significantly reduce the temperature of the wireless charging device during charging and improve the user experience.

[0037] Reference Figures 1-3 , a wireless charging device, comprising: a housing 1, a wireless charging module 2 and a cooling fan 3 disposed within the housing 1; a bearing platform 111 is provided on the outer surface of the housing 1, and a supporting portion 112 for placing an external charging device is provided on the bearing platform 111, and a heat dissipation hole 113 is provided on the bearing platform 111; the wireless charging module 2 is located between the cooling fan 3 and the bearing platform 111, and an air inlet hole 131 is provided on one side of the housing 1 close to the cooling fan 3, and the cooling fan 3 is used to guide air flow through the heat dissipation hole 113 to dissipate heat from the external charging device. It can be understood that when the external charging device is placed on the supporting portion 112, the wireless charging module 2 charges the external charging device through electromagnetic induction. At this time, a large amount of heat will be generated due to energy damage in the induction coil 21 of the external charging device and the coil 21 of the wireless charging module 2, and will accumulate between the external charging device and the wireless charging device. The principle of the present utility model is that by providing the supporting portion 112 for supporting the external charging device, a gap for air circulation is formed between the external charging device and the bearing platform 111. The cooling fan 3 is used to guide the air flow to enter the interior of the housing 1 from the air inlet hole 131 of the wireless charging device, and then discharged through the air outlet hole. At this time, the discharged air flow will flow along this gap, thereby taking away the heat between the external charging device and the bearing platform 111, avoiding the problem of temperature rise caused by heat accumulation. Greatly improves the user experience of using the wireless charging device for charging.

[0038] It should be noted that the external charging device can be a device such as a mobile phone, a tablet computer, or a headset that can perform wireless charging. The following embodiments will take a mobile phone as an example for illustration.

[0039] In some embodiments, with reference to Figures 1-2 , the supporting portion 112 is a boss protruding from the bearing platform 111, and the heat dissipation hole 113 is provided along the circumference of the boss. Taking a mobile phone as an example, when the mobile phone is placed on the boss, a gap will be formed between the back of the mobile phone and the bearing platform. The cooling fan 3 guides the air flow to blow out through the heat dissipation hole 113 provided along the circumference of the boss, and the heat dissipation air flow then blows towards the back of the mobile phone through this gap, thereby taking away the heat and reducing the temperature of the mobile phone and the wireless charging device.

[0040] Furthermore, with reference to Figures 1-2, the boss is cylindrical, and the heat dissipation holes 113 are arranged along the circumferential direction of the boss and are arc-shaped; the height of the boss is 0.2 - 0.4 mm. The boss can also be a triangular prism, a quadrangular prism or a combination of multiple columnar structures. Its main function is to support the charging device with the boss and form a gap for the heat dissipation air flow to pass through between the charging device and the bearing platform 111, so as to take away the heat and achieve the effect of cooling. Among them, the height of the boss can be 0.2 mm, 0.3 mm, 0.4 mm. It should be noted that the height of the heat dissipation gap should not be too high. According to Bernoulli's principle, when the air flow accelerates, the pressure around the air flow will decrease, thereby reducing the temperature of the air flow. Thus, when the heat dissipation gap is small, the air flow speed blown out through the heat dissipation holes 113 will be faster, so as to achieve a better cooling effect. The arc-shaped heat dissipation holes 113 can ensure that the air flow is evenly blown out along the charging device, and the heat dissipation air flow can cover a larger area of the charging device. Increasing the contact area can improve the heat exchange efficiency, so the heat dissipation effect is better.

[0041] In some embodiments, referring to Figures 1-3 , the housing 1 includes an upper housing 11, a middle housing 12 and a lower housing 13; the bearing platform 111 is located on the upper housing 11, the heat dissipation fan 3 and the wireless charging module 2 are fixed to the middle housing 12 through a support frame, and a plurality of air inlet holes 131 are provided on the lower housing 13. It can be understood that setting the housing 1 as the upper housing 11, the middle housing 12 and the lower housing 13 can facilitate assembly and production. That is to say, the heat dissipation holes 113 and the boss on the upper housing 11 can be integrally formed by a mold. Similarly, the middle housing 12 and the lower housing 13 can also be manufactured by integral molding. Install the heat dissipation fan 3 and the wireless charging module 2 on the middle housing 12, and then assemble the upper housing 11, the lower housing 13 and the middle housing 12 together to complete the assembly of the entire device. Among them, during the assembly process, each component and the housing 1 can be connected by snap connection, or can be connected by threads, bolts and screws.

[0042] Furthermore, referring to Figure 3 , the support frame includes a first support frame 123 for fixing the heat dissipation fan 3 and a second support frame 124 for fixing the wireless charging module 2; an air flow channel is formed between the first support frame 123 and the second support frame 124, so that after the air flow passes through the air flow channel, it is discharged through the heat dissipation holes 113. During the charging process, the heat generated by the wireless charging module 2 will diffuse in the housing 1. The heat dissipation fan 3 can guide the air flow to flow in from the air inlet holes 131, and then discharge the heat in the housing 1 from the heat dissipation holes 113 through the air flow channel, so as to ensure that the inside of the housing 1 remains at a low temperature.

[0043] Furthermore, a buffer pad (not shown) is provided between the first support frame 123 and the cooling fan 3. When the fan rotates, vibrations are generated, and the vibrations may produce noise, thus bringing an unpleasant user experience. By providing the buffer pad, the impact of the fan vibrations on the charging device can be effectively reduced.

[0044] In some embodiments, referring to Figure 3 , 5 , the wireless charging module 2 includes a coil 21 and a PCB board 22 electrically connected to the coil 21. The coil 21 is located on the side facing the bearing platform 111; a heat insulation member is provided between the cooling fan 3 and the wireless charging module 2. It can be understood that the coil 21 is located below the bearing platform 111. Specifically, the coil 21 is preferably arranged relative to the support portion 112, so that when the device to be charged is placed on the support portion 112, the coil 21 and the device to be charged are kept within a distance where electromagnetic induction can occur. The PCB board 22 is arranged on the side of the coil 21 away from the bearing platform 111. When the cooling fan 3 is turned on, the air flow direction inside the housing 1 is: the air inlet hole 131, the cooling fan 3, the PCB board 22, the coil 21, the heat dissipation hole 113. That is to say, the air flow inside the housing 1 can take away the heat generated by the cooling fan 3, the PCB board 22, and the coil 21, and discharge it through the heat dissipation hole 113. It can effectively reduce the temperature of the wireless charging device during use. Moreover, the provided heat insulation member can prevent the heat generated by the motor of the cooling fan 3 from being directly transferred to the PCB board 22, and can effectively prevent the problem of overheating of the PCB board 22 during use. Among them, the heat insulation member can be selected from rubber pads, engineering plastics, etc.

[0045] In some embodiments, referring to Figure 3 , an indicator light 122 and a charging port 121 electrically connected to the PCB board 22 are provided on the middle shell 12. Among them, the charging port 121 can be one or more of USB, Type-C, and Lighting. The indicator light 122 can be used to indicate the battery level of the device to be charged.

[0046] In some embodiments, referring to Figures 4-5 , the middle position of the lower shell 13 protrudes from the plane where the lower shell 13 is located. It can be understood that when the wireless charging device is placed on a plane, the entire wireless charging device is supported by the lower shell 13. When the middle position of the lower shell 13 has a protruding structure to prevent the air inlet hole 131 from being blocked, the air intake volume of the air inlet hole 131 can be increased.

[0047] In some embodiments, referring to Figure 3, a first magnetic ring 4 is disposed inside the housing 1 near the bearing platform 111 and along the circumferential direction of the wireless charging module 2 for cooperating with a second magnetic ring of an external charging device to fix the external charging device. The first magnetic ring 4 and the second magnetic ring cooperate and adsorb to achieve rapid positioning of the external charging device, so that the induction coil 21 of the external charging device and the wireless charging device can be quickly positioned at the charging position, solving the problem that the charging position cannot be aligned during charging. In addition, during charging, the cooperation and adsorption of the first magnetic ring 4 and the second magnetic ring prevent the external charging device from slipping or being moved out of the charging position due to external force, resulting in the problem that charging cannot be carried out.

[0048] Further, referring to Figure 3 , the first magnetic ring 4 is formed by arranging multiple magnets. The multiple magnets are arranged to form the first magnetic ring 4, and the arrangement of the multiple magnets can be adjusted as needed to adapt to devices of different sizes and shapes. This flexibility makes the design more diverse and can meet the needs of different products. The arrangement of the multiple magnets can reduce the heat generation of a single magnet, thereby reducing the overall heat loss and improving the charging efficiency.

[0049] Therefore, the wireless charging device of the present utility model has good heat dissipation performance, simple structure, and convenient disassembly and assembly, thus having an excellent user experience.

[0050] The above is a specific description of the preferred embodiment of the present utility model, but the creation of the present utility model is not limited to the above embodiments. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A wireless charging device, characterized in that, Comprising: A housing and a wireless charging module and a cooling fan disposed within the housing; A bearing platform is provided on the outer surface of the housing, and a supporting portion for placing an external charging device is provided on the bearing platform, and heat dissipation holes are provided on the bearing platform; The wireless charging module is located between the cooling fan and the bearing platform, and an air inlet hole is provided on one side of the housing close to the cooling fan, and the cooling fan is used to guide air flow through the heat dissipation holes to dissipate heat from the external charging device.

2. The wireless charging device according to claim 1, wherein The supporting portion is a boss protruding from the bearing platform, and the heat dissipation holes are arranged along the circumference of the boss.

3. The wireless charging device according to claim 2, wherein The boss is cylindrical, and the heat dissipation holes are arranged along the circumference of the boss and are arc-shaped; The height of the boss is 0.1 - 0.5 mm.

4. The wireless charging device according to claim 1, wherein The housing includes an upper shell, a middle shell and a lower shell; The bearing platform is located on the upper shell, the cooling fan and the wireless charging module are fixed to the middle shell by a support frame, and a plurality of air inlet holes are provided on the lower shell.

5. The wireless charging device according to claim 4, wherein It includes a first support frame for fixing the cooling fan and a second support frame for fixing the wireless charging module; An air flow channel is formed between the first support frame and the second support frame, so that after the air flow passes through the air flow channel, it is discharged through the heat dissipation holes.

6. The wireless charging device according to claim 4, wherein The wireless charging module includes a coil and a PCB board electrically connected to the coil, and the coil is located on the side facing the bearing platform; An insulating member is provided between the cooling fan and the wireless charging module.

7. The wireless charging device according to claim 6, wherein An indicator light and a charging port electrically connected to the PCB board are provided on the middle shell.

8. The wireless charging device according to claim 4, wherein The middle position of the lower shell protrudes from the plane where the lower shell is located.

9. The wireless charging device according to claim 1, wherein A first magnetic ring is provided inside the housing near the bearing platform and along the circumference of the wireless charging module, and is used to cooperate with a second magnetic ring of an external charging device to fix the external charging device.

10. The wireless charging device according to claim 9, wherein The first magnetic ring is formed by arranging multiple magnets.

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