Wireless charging device with heat dissipation structure

Abstract

The utility model provides a wireless charging device with a heat dissipation structure. The wireless charging device comprises a first shell and a second shell which are combined with each other. The first shell is provided with at least one charging part, at least one air inlet part and at least one air outlet part, the at least one charging part is arranged on the outer surface of the first shell in a protruding mode, and a radiator is installed in the first shell to dissipate heat energy generated in the operation process of the wireless charging device. The fan is arranged between the first shell and the second shell, external airflow is guided into the device by the fan and is further guided to the airflow guide-out part of the second shell and the air outlet part of the first shell through the drainage part to be exhausted, the airflow can be blown to the radiator and the mobile communication equipment at the same time, and therefore the efficient heat dissipation effect is achieved.

Description

Technical Field

[0001] This utility model relates to a wireless charging device, and more particularly to a wireless charging device with a heat dissipation structure. Background Technology

[0002] With the rapid development of technology, mobile communication devices have become an indispensable part of daily life, often requiring charging via car chargers for extended periods. To enhance convenience, more and more users are choosing wireless charging technology to avoid the hassle of tangled charging cables. Users simply place the device on a charging pad, allowing it to magnetically connect, and charging begins automatically. However, with advancements in fast charging technology, the current for wireless charging is controlled by the mobile device. The main reason for the inability to charge at full power is battery overheating. Overheating not only shortens battery life but can also cause damage or even explosion. Therefore, the core challenge of wireless fast charging technology lies in keeping the battery temperature below 38°C during high-power charging.

[0003] To further explain, the charging coil inside a wireless charging device generates heat during operation, necessitating the installation of a heat sink and the use of a fan for cooling to prevent heat transfer to the mobile communication device's battery. However, under high-power charging conditions, the heat inside the charging device is still difficult to dissipate quickly, causing both the charging device and the mobile communication device to heat up simultaneously. This not only affects charging efficiency but may also shorten the device's lifespan.

[0004] Mobile communication devices have a receiving coil on the back, which converts the magnetic energy of wireless charging into current to charge the battery during charging. This process also generates heat. The battery also generates heat as it converts current into chemical energy for storage. Therefore, mobile communication devices also require a fan on the back to help dissipate heat. Thus, providing sufficient airflow to both wireless charging devices and mobile communication devices to remove heat has become a key issue for current technological improvements. Utility Model Content

[0005] Based on the above deficiencies, the purpose of this utility model is to provide a wireless charging device, particularly for diverting the airflow from a fan, so as to effectively distribute the airflow blown out by the fan to the heat sink and mobile communication device, thereby achieving a comprehensive heat dissipation effect.

[0006] According to the purpose of this utility model, this utility model provides a wireless charging device with a heat dissipation structure, comprising a housing, characterized in that: the housing has at least one charging part, at least one air inlet part, and at least one air outlet part; the at least one charging part protrudes from the outer surface of the housing, and a wireless charging coil module and a heat sink are installed inside the at least one charging part, the heat sink being disposed on one side of the wireless charging coil module; a fan is disposed inside the housing corresponding to the air inlet part; a flow guiding structure is disposed in the housing, including a flow splitting part and a flow guiding part, wherein the flow splitting part is disposed inside the housing and adjacent to the fan, including at least one air inlet and one flow splitting outlet, so that the gas output by the fan is divided into two or more airflows and blown towards the flow splitting outlet and the at least one air inlet respectively; wherein the flow guiding part is disposed inside the housing and is configured to connect the air inlet and the air outlet part.

[0007] The outer casing includes a first housing and a second housing that are joined together. The at least one charging part has a positioning ring wall and a top cover. The positioning ring wall extends vertically from the outer surface of the first housing in a direction away from the second housing. The top cover is disposed on the positioning ring wall and together with the positioning ring wall forms an accommodating space. The wireless charging coil module is disposed in the accommodating space.

[0008] The second housing has a fan positioning part and at least one airflow outlet on each of its two sides, with the position of the fan positioning part corresponding to the position of the air inlet part.

[0009] The fan positioning part is a support plate that protrudes from the second housing in a direction away from the first housing. The support plate also has a guide surface and a support surface. An angle is formed between the support surface and the guide surface, and the guide surface is inclined relative to the second housing. The fan is located on the support surface.

[0010] The at least one air outlet is a guide plate that protrudes vertically from the outer surface of the first housing in a direction away from the second housing. The surface of the guide plate has a plurality of air outlet holes, which are arranged in an array on one of the left and right sides of the at least one charging part.

[0011] The protrusion height of the air outlet is less than the protrusion height of the charging part.

[0012] The surface of the diversion plate has a plurality of air outlets arranged in a ring, which surround the charging unit.

[0013] At least one of the flow guides is a ventilation duct.

[0014] The ventilation duct has at least one plate, which is assembled or integrally formed on the inner surface of the housing.

[0015] The air guide section has a base plate and a side plate perpendicularly disposed on the base plate, and one end of the side plate forms an adjacent air inlet and a diversion outlet.

[0016] The plurality of air outlets of the at least one air outlet are provided on the upper surface of the housing.

[0017] The number of at least one air outlet and at least one flow guide is two. Each air outlet has a plurality of air outlet holes arranged in an array. The two air outlets are symmetrically arranged on the left and right sides of the at least one charging unit. The two flow guides are symmetrically arranged in relation to the positions of the two air outlets.

[0018] The number of at least one charging section and at least one air inlet section is two, and the number of at least one air outlet section and at least one flow guide section is one. The air outlet section has a plurality of air outlet holes formed on one side of the two charging sections respectively.

[0019] The number of at least one air inlet is two, the fan positioning part is correspondingly disposed between the two air inlets, and the housing is provided with two guide plates corresponding to the two air inlets.

[0020] The advantages of this invention are: the airflow is guided to the air outlet of the second housing and discharged through the air outlet of the first housing via the air diversion part, so that the airflow can be blown to the heat sink and the mobile communication device at the same time, thereby achieving a high-efficiency heat dissipation effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the first embodiment of the present invention.

[0022] Figure 2 This is an exploded view of the components of the first embodiment of this utility model.

[0023] Figure 3 yes Figure 1 Sectional view along section 3-3.

[0024] Figure 4 yes Figure 1 Sectional view along section line 4-4.

[0025] Figure 5 This is a schematic diagram of the inner surface of the second shell according to the first embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the drainage section of the first embodiment of this utility model.

[0027] Figure 7 This is a schematic diagram of the second embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the inner surface of the first housing according to the second embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the inner surface of the second housing according to the second embodiment of the present invention.

[0030] Figure 10 yes Figure 7 Sectional view along section line 10-10.

[0031] Figure 11 yes Figure 7 Sectional view along section line 11-11.

[0032] Explanation of reference numerals in the attached drawings: 100, 200 - Wireless charging device; 11, 41 - First housing; 111, 411 - Air inlet; 112, 412 - Air guide plate; 112a, 412a - Air outlet; 12, 42 - Charging section; 121 - Positioning ring wall; 122 - Top cover; 13, 43 - Wireless charging coil module; 131 - Magnetic ring; 132 - Electromagnetic barrier; 133, 433 - Wireless charging coil; 14, 44 - Heat sink; 21, 51 - Second housing; 22A, 52A - Fan positioning section; 22-Support plate; 221, 521-Guide surface; 222, 522-Support surface; 23-Support component; 231-Inclined surface; 24, 54-Airflow outlet section; 25, 55-Fan; 27, 57-Circuit board; 30-Guide structure; 31, 61-Branch section; 311, 611-Base plate; 312A-External side plate; 312B: Internal side plate; 612-Side plate; 32, 62-Air inlet; 33, 63-Branch outlet; 58-Positioning block; 64-Guide plate. Detailed Implementation

[0033] To clearly illustrate the specific embodiments, structure, and effects achieved by this utility model, the following embodiments are provided in conjunction with the accompanying drawings:

[0034] The directional descriptions such as "front," "back," "up," "down," "left," and "right" used in this utility model are for ease of understanding only. This utility model is not limited to these directions and can be adjusted according to actual conditions. In the embodiments of this utility model, the installation direction of the wireless charging devices 100 and 200 and the electronic device is taken as the front-back direction, the vertical direction of the wireless charging devices 100 and 200 is taken as the up-down direction, and the horizontal direction is taken as the left-right direction.

[0035] Please see Figures 1 to 6 As shown, the present invention provides a first embodiment of a wireless charging device 100 with a heat dissipation structure, which has a housing, the housing comprising a first housing 11 and a second housing 21 connected to each other. In all embodiments of the present invention, the first housing 11 and the second housing 21 are connected by interlocking, but are not limited thereto.

[0036] The first housing 11 has a charging part 12, an air inlet 111 and at least one air outlet. The charging part 12 is located in the middle of the first housing 11. The charging part 12 has a positioning ring wall 121 and a top cover 122. The positioning ring wall 121 extends vertically from the outer surface of the first housing 11 toward a direction away from the second housing 21. The top cover 122 is disposed on the positioning ring wall 121 and together with the positioning ring wall 121 forms an accommodating space.

[0037] Please see Figure 3 and Figure 4 As shown, the wireless charging coil module 13 is disposed in the accommodating space. The wireless charging coil module 13 conforms to MagSafe standards and has a magnetic ring 131, an electromagnetic barrier 132, and a wireless charging coil 133 disposed behind the top cover 122. The magnetic ring 131 surrounds the electromagnetic barrier 132 and is used for magnetic connection with a mobile communication device. The wireless charging coil 133 is disposed behind the electromagnetic barrier 132, which is used to reduce the influence of the magnetic force generated by the magnetic ring 131 on the wireless charging coil 133. A heat sink 14 is disposed behind the wireless charging coil 133 to directly dissipate the heat generated by the wireless charging coil module 13, increasing heat dissipation efficiency. In embodiments of this utility model, the heat sink 14 may be, but is not limited to, heat dissipation fins.

[0038] To further explain, the at least one air outlet is a guide plate 112 that protrudes vertically from the outer surface of the first housing 11 in a direction away from the second housing 21. The surface of the guide plate 112 has a plurality of air outlet holes 112a, which are arranged in an array on one of the left and right sides of the charging unit 12. In other embodiments, the at least one air outlet may be composed of a plurality of air outlet holes 112a, which are arranged in an array on the surface of the first housing 11.

[0039] Please see Figure 3 and Figure 5 As shown, the second housing 21 has a fan positioning part 22A and an airflow outlet part 24 on its upper and lower sides, respectively. The fan positioning part 22A is a support plate 22 protruding from the second housing 21 in a direction away from the first housing 11. The support plate 22 has a guide surface 221 and a support surface 222. The support surface 222 and the guide surface 221 have an angle greater than 100 degrees, and the guide surface 221 is inclined relative to the second housing 21. The inclined design of the guide surface 221 helps to reduce air resistance and optimize the airflow path, thereby improving heat dissipation efficiency.

[0040] At least one support member 23 is vertically disposed at the middle position of the support surface 222 of the support plate 22. The at least one support member 23 has an inclined surface 231 and is used to stabilize the fan 25. In this embodiment of the present invention, there are two support members 23, which are spaced apart on the left and right sides of the support surface 222. The fan 25 abuts against the two inclined surfaces 231 of the two support members 23. The fan positioning part 22A corresponds to the air inlet part 111, which is used to introduce external airflow and is provided with a grille to prevent foreign objects from falling into the housing and affecting the operation of the fan 25. A circuit board 27 is also disposed on the inner surface of the second housing 21, and the fan 25 is electrically connected to the circuit board 27. In other embodiments, the fan positioning part 22A may also be disposed on the inner surface of the first housing 11. Alternatively, the fan 25 can be fixed to the inner surface of the first housing 11 or the second housing 21 by means of a fixing element.

[0041] To further explain, the interior of the housing is also provided with a flow guiding structure 30, which includes a plurality of plates that form the boundary of its internal channel, and at least one flow guide and one flow divider 31 are formed inside the housing. The at least one flow guide is used to connect the air inlet 32 ​​and the air outlet. The at least one flow guide includes a base plate 311 and an outer side plate 312A and an inner side plate 312B that are vertically disposed on the base plate 311. The flow divider is formed on the side of the outer side plate 312A and the inner side plate 312B adjacent to the fan 25. The flow divider includes at least one air inlet 32 ​​and one flow divider 33. In one embodiment of this utility model, the air inlet 32 ​​is formed between the two ends of the side plate. Specifically, one end of each of the two outer side plates 312A connects to the air inlet channel of the fan 25, and at least one inner side plate 312B is located in the middle of the two outer side plates 312A. The ends of the outer side plates 312A and the ends of the inner side plates 312B form the air inlet 32. Further, the gas output by the fan 25 will be divided into two or more airflows due to the diversion section. In other embodiments, the aforementioned diversion section is a ventilation duct. The plate forming the diversion section is integrally formed on the inner surface of the first housing 11 or integrally formed on the inner surface of the second housing 21. The outer side plates 312A and the inner side plates 312B are used to guide one of the airflows discharged by the fan into the ventilation duct, and through the bottom plate 311, the gas flowing into the ventilation duct moves towards the air outlet.

[0042] Please see Figure 2 and Figure 6As shown, in the embodiment of this utility model, the number of at least one air outlet and at least one air guide is two. A plurality of air outlet holes 112a of the two air outlets are arranged in an array on the left and right sides of the charging unit 12. The two air guides are symmetrically arranged corresponding to the positions of the two air outlets. Each air guide has two internal side plates 312B located between the air inlet channels formed by two external side plates 312A. The ends of the external side plates 312A and the ends of the internal side plates 312B form the air inlets 32. A diversion port 33 is formed between the two internal side plates 312B and located between the two air inlets 32. The number of charging units 12 is proportional to the number of air guide structures 30.

[0043] The gas output by the fan 25 is divided into two or more airflows. One part of the airflow enters the ventilation duct through the two air inlets 32 between the outer side plate 312A and the inner side plate 312B, and is discharged from the plurality of air outlets 112a of the first housing 11, blowing towards the mobile communication device to dissipate heat from the mobile communication device. The other part of the airflow flows into the diversion port 33 between the two inner side plates 312B, blows towards the heat sink 14, and is discharged from the airflow outlet 24 of the second housing 21 to accelerate the heat dissipation efficiency of the heat sink 14. By means of the above, the airflow circulation is improved, and the cooling effect is achieved effectively. In other embodiments, the number of the air outlet and the air guide can be one, and the bottom plate 311 of the air guide can be an annular bottom plate with an annular side plate vertically disposed on the bottom plate 311, while the plurality of air outlets 112a of the air outlet are arranged in an annular pattern and surround the charging unit 12.

[0044] To further explain, the protrusion height of the air outlet is less than that of the charging part 12. In addition to avoiding increasing the contact area between the mobile communication device and the wireless charging device 100, increasing the height of the air outlet can also increase the air flow and bring the position of the air outlet 112a closer to the mobile communication device, thereby improving the heat dissipation efficiency.

[0045] Please see Figures 7 to 11 As shown, this is the second embodiment of the present invention. The wireless charging device 200 has a housing, which includes a first housing 41 and a second housing 51 joined together. The first housing 41 has two charging sections 42, two air inlets 411, and an air outlet. The two charging sections 42 are arranged at a left-right interval, enabling the wireless charging device 200 to charge two mobile communication devices simultaneously. The two air inlets 411 are located above the two charging sections 42 to introduce external airflow. Each of the two charging sections 42 has a wireless charging coil module 43. A heat sink 44 is connected to the rear of each wireless charging coil 433 of the wireless charging coil module 43 to directly dissipate the heat generated by the wireless charging coil module 43.

[0046] Please see Figure 7 As shown, the air outlet is a guide plate 412 that protrudes vertically from the outer surface of the first housing 41 in a direction away from the second housing 51. The surface of the guide plate 412 has a plurality of air outlet holes 412a respectively disposed below the two charging units 42. The plurality of air outlet holes 412a can be configured to surround the two charging units 42 respectively. Alternatively, the plurality of air outlet holes 412a can be configured to be arranged in an array on the left and right sides of the two charging units 42.

[0047] Please see Figure 9 As shown, the second housing 51 is provided with a fan positioning part 52A and a plurality of airflow outlets 54. The airflow outlets 54 are disposed on the lower side and the left and right sides of the second housing 51 to accelerate airflow dissipation. The fan positioning part 52A is located approximately between the two air inlets 411. The fan positioning part 52A has a guide surface 521 and a support surface 522. The support surface 522 and the guide surface 521 form an angle greater than 100 degrees, and the guide surface 521 is inclined relative to the second housing 51. The inclined design of the guide surface 521 helps to reduce air resistance and optimize the airflow path, thereby improving heat dissipation efficiency.

[0048] In the second embodiment, two positioning blocks 58 are disposed on the support surface 522 of the fan positioning portion 52A, and the two positioning blocks 58 are used to engage the fan 55 with the fan positioning portion 52A. Alternatively, the fan 55 can be locked into the fan positioning portion 52A by means of a fixing element such as a bolt. A circuit board 57 is also disposed on the inner surface of the second housing 51, and the fan 55 is electrically connected to the circuit board 57.

[0049] Please see Figure 8 , Figure 10 and Figure 11 In the second embodiment, the plate forming the airflow guiding structure inside the outer shell is integrated into the first housing 41. The airflow guiding structure has a diversion section 61 located on the inner surface of the first housing 41 corresponding to the air outlet. The diversion section 61 has a bottom plate 611 and a side plate 612. The bottom plate 611 is located corresponding to the plurality of air outlets 412a, and the area of ​​the bottom plate is larger than the sum of the areas of the plurality of air outlets. The side plate 612 is arranged perpendicularly around the bottom plate 611. The end of the side plate 612 is located inside the air inlet channel of the fan 55, and an air inlet 62 is formed between the ends of the two side plates 612. A ventilation channel is formed between the diversion section 61 and the first housing 41.

[0050] The first housing 41 also has two guide plates 64 respectively disposed on the inner surface of the two air inlets 411 (see [link]). Figure 8The ends of the two guide plates 64 are connected to the air inlet channel of the fan 55. Therefore, the guide plates 64 form the common boundary between the air inlet 411 and the air inlet channel of the fan 55. The function of the two guide plates 64 is to guide the airflow through the two air inlets 411 to the fan 55. In addition, each guide plate 64 and one end of the side plate 612 form a diversion port 63. It should be noted that in the second embodiment, the external airflow enters from the two air inlets 411 located on the left and right sides of the first housing 41, and is directed to the fan 55 by the two guide plates 64. Then, the fan 55 outputs air to blow it to the diversion port 61.

[0051] In the second embodiment, the airflow flowing through the diversion port 63 is ultimately directed to a different location than in the first embodiment. Specifically, the airflow blown out by the fan 55 enters the diversion section 61, with a portion of the airflow entering the ventilation channel between the two side plates 612 through the air inlet 62, exiting from the plurality of air outlets 412a of the first housing 41 and blowing towards the two mobile communication devices to dissipate heat from the mobile communication devices connected to the two charging sections 42; another portion of the airflow flows into the two diversion ports 63 between the side plates 612 and the guide plate 64 and blows towards the heat sink 44 of the two charging sections 42, and exits from the plurality of airflow outlets 54 of the second housing 51 to accelerate the heat dissipation efficiency of the heat sink 44. By means of the foregoing, two mobile communication devices can be charged simultaneously, and the two mobile communication devices and the two heat sinks 44 of the wireless charging device 200 can be cooled simultaneously, achieving an effective cooling effect.

[0052] In all embodiments of this invention, heat sinks 14 and 44 are directly disposed behind the wireless charging coil modules 13 and 43. Through the diversion sections 31 and 61, the airflow from fans 25 and 55 can directly blow onto the heat sinks 14 and 44. Furthermore, the protruding charging sections 12 and 42 are designed so that only a portion of the outer surface of the mobile communication device contacts the wireless charging devices 100 and 200. In this way, the airflow from fans 25 and 55, after being discharged through the air outlets 112a and 412a, can effectively blow onto the outer surface of the mobile communication device, thereby improving heat dissipation efficiency. As described above, this invention allows the airflow from fans 25 and 55 to simultaneously blow onto the heat sinks 14 and 44 and the mobile communication device, effectively reducing the heat generated during charging. At the same time, this invention has a simple structure and can reduce production costs while maintaining effective heat dissipation.

Claims

1. A wireless charging device with a heat dissipation structure, characterized in that, Include: The housing has at least one charging part, at least one air inlet and at least one air outlet. The at least one charging part protrudes from the outer surface of the housing. A wireless charging coil module and a heat sink are installed inside the at least one charging part. The heat sink is located on one side of the wireless charging coil module. The fan is located inside the housing; A flow guiding structure, disposed in the housing, includes a flow splitter and at least one flow guide. The diversion section is located inside the housing and adjacent to the fan, and includes at least one air inlet and a diversion port, so that the gas output by the fan is divided into two or more airflows that blow towards the diversion port and the at least one air inlet respectively. The at least one air intake is located inside the outer casing and is configured to connect the air inlet and the air outlet.

2. The wireless charging device with a heat dissipation structure as described in claim 1, characterized in that: The housing includes a first housing and a second housing that are joined together. The at least one charging part has a positioning ring wall and a top cover. The positioning ring wall extends vertically from the outer surface of the first housing in a direction away from the second housing. The top cover is disposed on the positioning ring wall and together with the positioning ring wall forms an accommodating space. The wireless charging coil module is disposed in the accommodating space.

3. The wireless charging device with a heat dissipation structure as described in claim 2, characterized in that: The second housing is provided with a fan positioning part and at least one airflow outlet on each of its two sides, and the position of the fan positioning part corresponds to the position of the air inlet part.

4. The wireless charging device with a heat dissipation structure as described in claim 3, characterized in that: The fan positioning part is a support plate that protrudes from the second housing in a direction away from the first housing. The support plate also has a guide surface and a support surface. An angle is formed between the support surface and the guide surface, and the guide surface is inclined relative to the second housing. The fan is located on the support surface.

5. The wireless charging device with a heat dissipation structure as described in claim 2, characterized in that: The at least one air outlet is a guide plate that protrudes vertically from the outer surface of the first housing in a direction away from the second housing. The surface of the guide plate has a plurality of air outlet holes, which are arranged in an array on one of the left and right sides of the at least one charging part.

6. The wireless charging device with a heat dissipation structure as described in claim 5, characterized in that: The protrusion height of the air outlet is less than that of the charging part.

7. The wireless charging device with a heat dissipation structure as described in claim 5, characterized in that: The surface of the drain plate has a plurality of air outlets arranged in a ring, which surround the charging part.

8. The wireless charging device with a heat dissipation structure as described in any one of claims 1 to 7, characterized in that: At least one of the airflow guiding structures is a ventilation duct.

9. The wireless charging device with a heat dissipation structure as described in claim 8, characterized in that: The ventilation duct has at least one plate that is assembled or integrally formed on the inner surface of the housing.

10. The wireless charging device with a heat dissipation structure as described in claim 9, characterized in that: The plurality of air outlets of at least one air outlet are provided on the upper surface of the housing.

11. The wireless charging device with a heat dissipation structure as described in any one of claims 1 to 7, characterized in that: The airflow guiding structure has a base plate and a side plate vertically disposed on the base plate, with one end of the side plate forming an adjacent air inlet and a diversion outlet.

12. The wireless charging device with a heat dissipation structure as described in claim 11, characterized in that: The number of at least one air outlet and at least one flow guide is two. Each air outlet has a plurality of air outlet holes arranged in an array. The two air outlets are symmetrically arranged on the left and right sides of the at least one charging unit. The two flow guides are symmetrically arranged corresponding to the positions of the two air outlets.

13. The wireless charging device with a heat dissipation structure as described in any one of claims 1 to 7, characterized in that: The number of at least one charging section and at least one air inlet section is two, and the number of at least one air outlet section and at least one flow guide section is one. The air outlet section has a plurality of air outlet holes formed on one side of the two charging sections respectively.

14. The wireless charging device with a heat dissipation structure as described in claim 1, characterized in that: The number of at least one air inlet is two, and the fan positioning part is correspondingly arranged between the two air inlets. The air guiding structure is provided with two air guide plates corresponding to the two air inlets.

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