Wireless charger

Abstract

The utility model discloses a wireless charger, which relates to the field of mobile phone accessories and comprises a shell, and a ceramic circuit board is fixedly mounted in the shell. A vibrating diaphragm assembly is arranged on the bottom side of the ceramic circuit board, ferrite is installed above the ceramic circuit board, a transmitting coil is fixedly installed in the middle of the upper side of the ferrite, and the vibrating diaphragm assembly and the transmitting coil are electrically connected and installed on the ceramic circuit board; an aluminum nitride panel is fixedly mounted on the top side of the shell; the ceramic circuit board, the vibrating diaphragm assembly, the ferrite and the transmitting coil are covered in the shell by the aluminum nitride panel; an air inlet is formed in the bottom side of the shell, the air inlet is located in the bottom side of the vibrating diaphragm assembly, and a plurality of first heat dissipation holes corresponding to each other up and down are formed in the aluminum nitride panel, the ceramic circuit board and the ferrite; according to the utility model, wind flows in the shell by using the vibrating diaphragm assembly, active heat dissipation is realized, and compared with the existing mode of adopting a fan, the volume of the scheme is smaller, and the heat dissipation effect during magnetic attraction wireless charging can also be improved.

Description

Technical Field

[0001] The utility model relates to the field of mobile phone accessories, in particular to a wireless charger. Background Art

[0002] With the continuous development and popularization of wireless charging technology, wireless charging has become the trend of electronic product charging technology. Wireless charging uses magnetic fields to transmit energy between the charger and the device being charged, eliminating the need for a charging cable. This completely separates the device being charged from the power source, improving safety and flexibility.

[0003] During extended charging times, the space between the phone and the wireless charger can easily heat up, damaging both the phone's battery and the wireless charger's induction coil, impacting subsequent use. Most wireless chargers rely solely on passive cooling with fans, which is inefficient. Increasing the fan speed also creates excessive noise.

[0004] To this end, the prior art (Announcement No.: CN219107141U, Announcement Date: 2023.05.30) discloses a wireless charger, wherein a fan is arranged in the accommodation space. When the fan rotates, air can be sucked into the accommodation space through one of the first ventilation opening and the second ventilation opening, and blown out through the other of the first ventilation opening and the second ventilation opening to take away the heat generated between the wireless charger and the electronic device and inside the accommodation space.

[0005] However, both the above solutions and the existing technology require the use of fans to assist the wireless charger in heat dissipation. Due to the large size of the fan, it is difficult to make the size of the wireless charger smaller. If the fan is eliminated, a very thin wireless charger can indeed be made, but its heat dissipation effect is worrying. The current method of using fans for heat dissipation is generally suitable for high-power wireless chargers, because as the power increases, the heat generated during operation will also increase. However, there are still many mobile phones on the market that are not suitable for high-power wireless charging. When charging at a lower power, the existing conventional wireless chargers have no heat dissipation function, and the wireless chargers with fans have the problem of being too large. Therefore, it is necessary to design a compromise solution to fill the market gap. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0007] A wireless charger comprises a housing, wherein a ceramic circuit board is fixedly mounted in the housing;

[0008] A diaphragm assembly is provided on the bottom side of the ceramic circuit board, a ferrite is installed on the top of the ceramic circuit board, a transmitting coil is fixedly installed in the middle of the upper side of the ferrite, and the diaphragm assembly and the transmitting coil are respectively electrically connected and installed on the ceramic circuit board;

[0009] An aluminum nitride panel is fixedly mounted on the top side of the housing, and the aluminum nitride panel covers the ceramic circuit board, the diaphragm assembly, the ferrite and the transmitting coil in the housing;

[0010] An air inlet is formed on the bottom side of the shell, and the air inlet is located on the bottom side of the diaphragm assembly. A plurality of first heat dissipation holes corresponding to the upper and lower parts are formed on the aluminum nitride panel, the ceramic circuit board and the ferrite.

[0011] Furthermore: a plurality of first neodymium magnets are fixedly mounted on the outer periphery of the upper side of the ferrite, and the plurality of first neodymium magnets are circularly surrounded on the outer side of the ferrite to form a Bagua-shaped structure.

[0012] Furthermore: a diaphragm coil is fixedly installed in the middle of the diaphragm assembly, and the diaphragm coil is electrically connected and installed on the ceramic circuit board. When the diaphragm coil is energized, it drives the diaphragm assembly to vibrate.

[0013] Furthermore: the shell adopts a circular structure, and the aluminum nitride panel adopts a disc structure and is covered and installed on the upper end of the shell.

[0014] Furthermore: a Type-C interface is embedded in the ceramic circuit board, and the Type-C interface supplies power to the transmitting coil and the diaphragm assembly respectively through the ceramic circuit board.

[0015] Furthermore: a permanent magnet is embedded in the ceramic circuit board, and the permanent magnet and the diaphragm coil are magnetically attracted to each other.

[0016] Furthermore: the shell adopts a square structure, and the aluminum nitride panel adopts a square plate structure and is covered and installed on the upper end of the shell.

[0017] Furthermore: a battery is fixedly installed in the square shell, and the battery supplies power to the transmitting coil and the diaphragm assembly respectively through the ceramic circuit board.

[0018] Furthermore: the square shell is formed with a plurality of third heat dissipation holes on one side of the battery.

[0019] Furthermore: a Type-C interface is embedded in the ceramic circuit board, and the Type-C interface charges the battery through the ceramic circuit board.

[0020] Furthermore: heat dissipation copper foil is pasted on the surface of the battery.

[0021] Furthermore: a cooling plate is fixedly mounted on the bottom side of the aluminum nitride panel of the square plate structure, and the battery supplies power to the cooling plate through the ceramic circuit board.

[0022] Furthermore: a plurality of second neodymium magnets are fixedly mounted on the bottom side of the aluminum nitride panel of the square plate structure, and the second neodymium magnets and the first neodymium magnets are staggered in distribution.

[0023] Furthermore: the upper surface of the ceramic circuit board is covered with a first heat conducting plate, a second heat conducting plate is arranged between the first heat conducting plate and the ferrite, and a plurality of second heat dissipation holes are formed on the first heat conducting plate and the second heat conducting plate, and the first heat dissipation holes and the second heat dissipation holes are arranged corresponding to each other up and down.

[0024] Furthermore: a plurality of capacitors are embedded and installed on the ceramic circuit board, and a plurality of air holes are formed on the ferrite, the first heat conducting plate and the second heat conducting plate. The capacitors are installed in the air holes of the first heat conducting plate, the second heat conducting plate and the ferrite with corresponding gaps.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The diaphragm assembly allows air to flow within the housing. The flowing air can pass through the first heat dissipation hole through the ceramic circuit board, ferrite, and aluminum nitride panel, thereby achieving active heat dissipation. Compared with the existing fan-based approach, this solution is smaller in size and can be applied to small wireless chargers. It can also enhance the heat dissipation effect of wireless charging.

[0027] 2. Compared with the fan, the diaphragm assembly has lower power consumption. The first heat dissipation hole allows the back of the mobile phone to be in a state of air flow, thereby achieving the effect of cooling the mobile phone during the wireless charging process.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 This is a schematic structural diagram of the first embodiment of the present invention;

[0031] Figure 2 yes Figure 1Schematic diagram of the explosion structure;

[0032] Figure 3 yes Figure 2 Structural diagram from another perspective;

[0033] Figure 4 This is a schematic structural diagram of the second embodiment of the present utility model;

[0034] Figure 5 yes Figure 4 Schematic diagram of the explosion structure;

[0035] Figure 6 yes Figure 5 Schematic diagram of the structure from another perspective.

[0036] Shown in the figure: 1. Housing; 2. Ceramic circuit board; 3. Diaphragm assembly; 4. Ferrite; 5. Transmitting coil; 6. Aluminum nitride panel; 7. Air inlet; 8. First heat dissipation hole; 9. First neodymium magnet; 10. Diaphragm coil; 11. Type-C interface; 12. Battery; 13. Heat dissipation copper foil; 14. Refrigeration plate; 15. Second neodymium magnet; 16. First heat conduction plate; 17. Second heat conduction plate; 18. Second heat dissipation hole; 19. Capacitor; 20. Air avoidance hole; 21. Third heat dissipation hole; 22. Permanent magnet. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0038] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0039] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] Example 1, as Figure 1-3 As shown, a wireless charger of the present invention comprises a housing 1, wherein a ceramic circuit board 2 is fixedly installed in the housing 1;

[0043] A diaphragm assembly 3 is provided on the bottom side of the ceramic circuit board 2, a ferrite 4 is mounted on the top of the ceramic circuit board 2, a transmitting coil 5 is fixedly mounted in the middle of the upper side of the ferrite 4, and the diaphragm assembly 3 and the transmitting coil 5 are electrically connected and mounted on the ceramic circuit board 2;

[0044] An aluminum nitride panel 6 is fixedly mounted on the top side of the housing 1, and the aluminum nitride panel 6 covers the ceramic circuit board 2, the diaphragm assembly 3, the ferrite 4 and the transmitting coil 5 in the housing 1;

[0045] An air inlet 7 is formed on the bottom side of the housing 1, and the air inlet 7 is located on the bottom side of the diaphragm assembly 3. A plurality of first heat dissipation holes 8 corresponding to the upper and lower portions are formed on the aluminum nitride panel 6, the ceramic circuit board 2 and the ferrite 4;

[0046] The principle is: use the diaphragm assembly 3 to let the wind flow in the shell 1, and the flowing wind can pass through the first heat dissipation hole 8 through the ceramic circuit board 2, ferrite 4 and aluminum nitride panel 6, thereby realizing active heat dissipation. Compared with the existing method of using a fan, this solution is smaller in size and can be suitable for small-volume wireless chargers. It can also enhance the heat dissipation effect of wireless charging. At the same time, the diaphragm assembly 3 has lower power consumption than the fan, and the first heat dissipation hole 8 can put the back of the mobile phone in a state of air flow, thereby realizing the effect of automatically cooling the mobile phone during wireless charging.

[0047] Furthermore: a plurality of first neodymium magnets 9 are fixedly installed on the outer periphery of the upper side of the ferrite 4, and the plurality of first neodymium magnets 9 are circularly surrounded on the outer side of the ferrite 4 to form a Bagua-shaped structure; the first neodymium magnets 9 can be magnetically attracted to the magnetic conductive parts inside the mobile phone, thereby achieving stable wireless charging. At the same time, the mobile phone can be rotated relative to the wireless charger during the wireless charging process, which is convenient for actual use.

[0048] Furthermore: a diaphragm coil 10 is fixedly installed in the middle of the diaphragm assembly 3, and the diaphragm coil 10 is electrically connected and installed on the ceramic circuit board 2. When the diaphragm coil 10 is energized, it drives the diaphragm assembly 3 to vibrate; when power is supplied to the diaphragm coil 10, its principle is similar to that of a speaker, which can make the diaphragm assembly 3 vibrate, and then make the air in the outer shell 1 flow, effectively enhancing its heat dissipation effect.

[0049] Furthermore: the shell 1 adopts a circular structure, and the aluminum nitride panel 6 adopts a disc structure and is covered and installed on the upper end of the shell 1; the appearance of this solution is similar to that of a conventional circular wireless charger, and it can dissipate heat independently, which will be more comfortable to use.

[0050] Furthermore: a Type-C interface 11 is embedded on the ceramic circuit board 2, and the Type-C interface 11 supplies power to the transmitting coil 5 and the diaphragm assembly 3 respectively through the ceramic circuit board 2; after the charging cable is inserted into the Type-C interface 11, the power supply will supply power to the transmitting coil 5 through the ceramic circuit board 2. At this time, placing the mobile phone on the aluminum nitride panel 6 can achieve the effect of wireless charging. At the same time, the power supply will also supply power to the diaphragm assembly 3 through the ceramic circuit board 2, causing it to vibrate, thereby allowing the air in the shell 1 to flow, thereby enhancing its heat dissipation effect.

[0051] Furthermore: a permanent magnet 22 is embedded in the ceramic circuit board 2, and the permanent magnet 22 and the diaphragm coil 10 are magnetically attracted to each other; when the diaphragm coil 10 is energized, the diaphragm coil 10 will drive the diaphragm assembly 3 to move up and down under the action of the permanent magnet 22, thereby maintaining air flow.

[0052] Furthermore: the upper surface of the ceramic circuit board 2 is covered with a first heat conducting plate 16, and a second heat conducting plate 17 is arranged between the first heat conducting plate 16 and the ferrite 4. A plurality of second heat dissipation holes 18 are formed on the first heat conducting plate 16 and the second heat conducting plate 17, and the first heat dissipation holes 8 and the second heat dissipation holes 18 are arranged corresponding to each other up and down; the first heat conducting plate 16 and the second heat conducting plate 17 can be used to realize rapid heat transfer, and the heat can be discharged through the flowing air in the outer shell 1, thereby achieving the effect of rapid heat dissipation.

[0053] Furthermore: a plurality of capacitors 19 are embedded and installed on the ceramic circuit board 2, and a plurality of air holes 20 are formed on the ferrite 4, the first heat conducting plate 16 and the second heat conducting plate 17. The capacitors 19 are installed in the air holes 20 of the first heat conducting plate 16, the second heat conducting plate 17 and the ferrite 4 with corresponding gaps. This makes the overall structure more reasonable, allows the layers to be stacked, and at the same time can ensure the overall thickness of the wireless charger, which is suitable for small wireless chargers.

[0054] Example 2, as Figure 4-6 As shown, a wireless charger of the present invention includes a shell 1, in which a ceramic circuit board 2 is fixedly installed; a diaphragm assembly 3 is provided on the bottom side of the ceramic circuit board 2, a ferrite 4 is installed above the ceramic circuit board 2, and a transmitting coil 5 is fixedly installed in the middle of the upper side of the ferrite 4, and the diaphragm assembly 3 and the transmitting coil 5 are respectively electrically connected and installed on the ceramic circuit board 2; an aluminum nitride panel 6 is fixedly installed on the top side of the shell 1, and the aluminum nitride panel 6 covers the ceramic circuit board 2, the diaphragm assembly 3, the ferrite 4 and the transmitting coil 5 in the shell 1; an air inlet 7 is formed on the bottom side of the shell 1, and the air inlet 7 is located on the bottom side of the diaphragm assembly 3, and a plurality of first heat dissipation holes 8 corresponding to the upper and lower parts are formed on the aluminum nitride panel 6, the ceramic circuit board 2 and the ferrite 4.

[0055] Furthermore: a plurality of first neodymium magnets 9 are fixedly installed on the outer periphery of the upper side of the ferrite 4, and the plurality of first neodymium magnets 9 are circularly surrounded on the outer side of the ferrite 4 to form a Bagua structure; a diaphragm coil 10 is fixedly installed in the middle of the diaphragm assembly 3, and the diaphragm coil 10 is electrically connected and installed on the ceramic circuit board 2. When the diaphragm coil 10 is energized, it drives the diaphragm assembly 3 to vibrate; a permanent magnet 22 is embedded in the middle of the ceramic circuit board 2, and the permanent magnet 22 and the diaphragm coil 10 are magnetically attracted to each other.

[0056] Furthermore: the shell 1 adopts a square structure, and the aluminum nitride panel 6 adopts a square plate structure and is covered and installed on the upper end of the shell 1; the square structure shell 1 can be better magnetically attracted to the back of the mobile phone, and the installation is more stable, thereby improving the stability of magnetic wireless charging.

[0057] Furthermore: a battery 12 is fixedly installed in the square shell 1, and the battery 12 supplies power to the transmitting coil 5 and the diaphragm assembly 3 respectively through the ceramic circuit board 2; the battery 12 can be built into the square structure shell 1, thereby realizing the mobile charging function, which is convenient to carry and use.

[0058] Furthermore: the square shell 1 is formed with a plurality of third heat dissipation holes 21 on one side of the battery 12; the setting of the third heat dissipation holes 21 allows flowing air to enter the vicinity of the battery 12, thereby taking away the heat generated by the battery 12 during operation, thereby preventing the battery 12 from overheating and improving its service life.

[0059] Furthermore: a Type-C interface 11 is embedded on the ceramic circuit board 2, and the Type-C interface 11 charges the battery 12 through the ceramic circuit board 2; the Type-C interface 11 is used to connect a power source to charge the battery 12, which is different from the circular structure of the wireless charger in the embodiment.

[0060] Furthermore, a heat dissipation copper foil 13 is attached to the surface of the battery 12 , which can quickly transfer the heat generated by the battery 12 during operation, thereby preventing the battery 12 from overheating and avoiding damage.

[0061] Furthermore: a cooling plate 14 is fixedly installed on the bottom side of the aluminum nitride panel 6 of the square plate structure, and the battery 12 supplies power to the cooling plate 14 through the ceramic circuit board 2; the cooling plate 14 can be used in conjunction with the cooling plate to achieve cooling, thereby effectively enhancing the heat dissipation effect of the mobile charger when in use. The cooling plate 14 can cool the charger and the mobile phone at the same time, so that neither the mobile phone nor the charger will malfunction due to overheating.

[0062] Furthermore, a plurality of second neodymium magnets 15 are fixedly mounted on the bottom side of the aluminum nitride panel 6 of the square plate structure, and the second neodymium magnets 15 and the first neodymium magnets 9 are staggered with each other. The second neodymium magnets 15 can be designed according to the existing mobile phone models so that they can be applied to the magnetic attraction of different mobile phone models. However, some mobile phones do not have a magnetic conductive structure inside. In this case, a universal mobile phone case or magnetic conductive sheet needs to be designed. The universal mobile phone case or magnetic conductive sheet can be promoted for free use by various mobile phone manufacturers.

[0063] Furthermore: several first neodymium magnets 9 form a circular Bagua-shaped structure, several second neodymium magnets 15 in the middle position form a W-shaped structure, and several second neodymium magnets 15 in the lower position form a linear structure. Magnetic conductive materials that correspond to the first neodymium magnets 9 and the second neodymium magnets 15 can be provided on the magnetic mobile phone case or the magnetic conductive sheet to adapt to the magnetic charging of various mobile phones.

[0064] Furthermore: the upper surface of the ceramic circuit board 2 is covered with a first heat conducting plate 16, a second heat conducting plate 17 is arranged between the first heat conducting plate 16 and the ferrite 4, and a plurality of second heat dissipation holes 18 are formed on the first heat conducting plate 16 and the second heat conducting plate 17, and the first heat dissipation holes 8 and the second heat dissipation holes 18 are arranged corresponding to each other up and down; a plurality of capacitors 19 are embedded and installed on the ceramic circuit board 2, and a plurality of air avoidance holes 20 are formed on the ferrite 4, the first heat conducting plate 16 and the second heat conducting plate 17, and the capacitors 19 are installed in the air avoidance holes 20 of the first heat conducting plate 16, the second heat conducting plate 17 and the ferrite 4 with a one-to-one corresponding gap.

[0065] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of protection of the technical solution of the utility model.

Claims

1. A wireless charger comprising a housing with a ceramic circuit board fixedly mounted in the housing; Its characteristics are: A diaphragm assembly is provided on the bottom side of the ceramic circuit board, a ferrite is installed on the top of the ceramic circuit board, a transmitting coil is fixedly installed in the middle of the upper side of the ferrite, and the diaphragm assembly and the transmitting coil are respectively electrically connected and installed on the ceramic circuit board; An aluminum nitride panel is fixedly mounted on the top side of the housing, and the aluminum nitride panel covers the ceramic circuit board, the diaphragm assembly, the ferrite and the transmitting coil in the housing; An air inlet is formed on the bottom side of the shell, and the air inlet is located on the bottom side of the diaphragm assembly. A plurality of first heat dissipation holes corresponding to the upper and lower parts are formed on the aluminum nitride panel, the ceramic circuit board and the ferrite.

2. A wireless charger according to claim 1, characterized in that: A plurality of first neodymium magnets are fixedly mounted on the outer periphery of the upper side of the ferrite, and the plurality of first neodymium magnets are circularly surrounded on the outer side of the ferrite to form a Bagua-shaped structure.

3. The wireless charger according to claim 1, wherein: A diaphragm coil is fixedly installed in the middle of the diaphragm assembly. The diaphragm coil is electrically connected and installed on a ceramic circuit board. When the diaphragm coil is energized, it drives the diaphragm assembly to vibrate.

4. A wireless charger according to any one of claims 1 to 3, characterized in that: The shell adopts a circular structure, and the aluminum nitride panel adopts a disc structure and is covered and installed on the upper end of the shell.

5. The wireless charger according to claim 4, characterized in that: A Type-C interface is embedded in the ceramic circuit board, and the Type-C interface supplies power to the transmitting coil and the diaphragm assembly respectively through the ceramic circuit board.

6. A wireless charger according to any one of claims 1 to 3, characterized in that: The shell adopts a square structure, and the aluminum nitride panel adopts a square plate structure and is covered and installed on the upper end of the shell.

7. The wireless charger according to claim 6, characterized in that: A battery is fixedly installed in the square shell, and the battery supplies power to the transmitting coil and the diaphragm assembly respectively through the ceramic circuit board.

8. The wireless charger according to claim 7, characterized in that: A Type-C interface is embedded in the ceramic circuit board, and the Type-C interface charges the battery through the ceramic circuit board.

9. The wireless charger according to claim 7, characterized in that: A cooling plate is fixedly mounted on the bottom side of the aluminum nitride panel of the square plate structure, and the battery supplies power to the cooling plate through the ceramic circuit board.

10. A wireless charger according to any one of claims 1 to 3, characterized in that: The upper surface of the ceramic circuit board is covered with a first heat conducting plate, a second heat conducting plate is arranged between the first heat conducting plate and the ferrite, and a plurality of second heat dissipation holes are formed on the first heat conducting plate and the second heat conducting plate, and the first heat dissipation holes and the second heat dissipation holes are arranged corresponding to each other up and down.

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