Wireless charger

Abstract

The utility model discloses a wireless charger, and belongs to the technical field of wireless charging. According to the wireless charger, when the semiconductor chilling plate works, cold energy generated by the low-temperature side of the semiconductor chilling plate can be transmitted to the insulating heat exchange piece through the wireless transmitting coil assembly, and then the insulating heat exchange piece directly abuts against the charging equipment to cool the charging equipment, and compared with the prior art, the cooling speed is higher; meanwhile, heat generated by the high-temperature side of the semiconductor chilling plate is transmitted to the first heat dissipation piece, heat generated by the circuit board is transmitted to the second heat dissipation piece, and air is blown to the heat dissipation channel between the second heat dissipation piece and the first heat dissipation piece through the air blowing piece, so that hot air in the heat dissipation channel is discharged out of the shell through the air outlet holes; therefore, the cooling effect of the charging device can be improved, the cooling effect of the semiconductor chilling plate and the circuit board can also be improved, and the user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging technology, and in particular to a wireless charger. Background Technology

[0002] In mobile phones with wireless charging, the wireless charging receiving coil is mainly located on the back of the phone, close to the outer casing, almost touching the battery. Because phones need to be thin, the receiving coil is generally made of FPC (Flexible Printed Circuit), and its DC resistance is about 10 times that of the transmitting coil. After experiencing high-power charging, the receiving coil generates heat rapidly, which radiates and conducts to the battery, raising the temperature of the entire back cavity of the phone.

[0003] To ensure the safety of lithium batteries, the phone's battery protection system will trigger over-temperature protection when the battery temperature reaches a certain threshold, which will then force a reduction in wireless charging power. If the temperature of the battery and coil drops too slowly, it will also cause the wireless charging process to be interrupted.

[0004] Currently, the main heat dissipation solution for in-car wireless chargers relies on cooling fans to blow natural air towards the back of the phone, using air convection to cool the phone. However, due to limitations in fan size, noise, and airflow design, the fan's airflow and air pressure at the vents are relatively small. This results in significant air pressure loss when air reaches the back of the phone, leading to mediocre heat dissipation and a poor user experience. Utility Model Content

[0005] The purpose of this invention is to provide a wireless charger that can improve the heat dissipation of charging devices and wireless chargers, thereby enhancing the user experience.

[0006] To achieve the above objectives, the following technical solution is provided:

[0007] Wireless charger, including:

[0008] The housing has a mounting through hole on one side and an air outlet on the other side.

[0009] An insulating heat exchanger is embedded in the mounting through hole and can come into contact with the charging device to exchange heat.

[0010] A wireless transmitting coil assembly and a semiconductor cooling chip are both fixed inside the housing. One side of the wireless transmitting coil assembly abuts against the low-temperature side of the semiconductor cooling chip, and the other side abuts against the insulating heat exchanger.

[0011] A first heat sink is fixed to the high-temperature side of the semiconductor cooling chip.

[0012] The circuit board and the second heat sink are provided. The circuit board is fixed inside the housing, and the second heat sink is fixed on one side of the circuit board. A heat dissipation channel is provided between the second heat sink and the first heat sink, and one end of the heat dissipation channel is connected to the air outlet.

[0013] A blower, the blower being used to blow air into the heat dissipation channel;

[0014] The wireless transmitting coil assembly, the semiconductor cooling chip, and the blower are all communicatively connected to the circuit board.

[0015] As a preferred embodiment of the aforementioned wireless charger, a first insulating and thermally conductive material is provided between the wireless transmitting coil assembly and the insulating heat exchanger; and / or,

[0016] A second insulating and thermally conductive material is provided between the wireless transmitting coil assembly and the low-temperature side of the semiconductor cooling chip; and / or,

[0017] A third insulating thermally conductive material is provided between the first heat sink and the high-temperature side of the semiconductor cooling chip; and / or,

[0018] A fourth insulating and thermally conductive material is provided between the second heat sink and the circuit board.

[0019] As a preferred technical solution of the above-mentioned wireless charger, the wireless charger further includes a heat insulation component, which is sandwiched between the wireless transmitting coil assembly and the first heat sink, and the heat insulation component is arranged around the outside of the semiconductor cooling chip in the thickness direction of the semiconductor cooling chip.

[0020] As a preferred technical solution of the above-mentioned wireless charger, the wireless charger further includes a shielding component, the shielding component having a central hole, the central hole being sleeved on the outside of the wireless transmitting coil assembly.

[0021] As a preferred embodiment of the aforementioned wireless charger, the wireless charger further includes a first temperature detection element, which is used to detect the temperature of the wireless transmitting coil assembly, and the first temperature detection element is communicatively connected to the circuit board; and / or,

[0022] The wireless charger further includes a second temperature detection element, which is used to detect the temperature of the high-temperature side of the thermoelectric cooler, and the second temperature detection element is communicatively connected to the circuit board; and / or,

[0023] The wireless charger also includes a third temperature sensor, which is used to detect the temperature of the low-temperature side of the semiconductor cooling chip, and the third temperature sensor is communicatively connected to the circuit board.

[0024] As a preferred technical solution for the aforementioned wireless charger, the first heat sink and the second heat sink do not come into contact.

[0025] As a preferred technical solution of the above-mentioned wireless charger, the housing is provided with a positioning structure, which can abut against the charging device so that the insulating heat exchange component and the wireless receiving coil assembly of the charging device are positioned facing each other.

[0026] As a preferred embodiment of the aforementioned wireless charger, when the insulating heat exchanger comes into contact with the charging device, along the first direction, the orthographic projection of the wireless receiving coil assembly of the charging device lies within the orthographic projection of the insulating heat exchanger; and / or,

[0027] Along the first direction, the orthographic projection of the wireless transmitting coil assembly lies within the orthographic projection of the insulating heat exchanger;

[0028] The wireless transmitting coil assembly and the wireless receiving coil assembly of the charging device are respectively located on both sides of the insulating heat exchanger along the first direction.

[0029] As a preferred technical solution of the above-mentioned wireless charger, the charging device has a protrusion on the side that abuts against the insulating heat exchanger, and the housing has an avoidance structure corresponding to the protrusion.

[0030] As a preferred technical solution of the above-mentioned wireless charger, a boss is provided on one side of the housing, the mounting through hole is provided on the top surface of the boss, and the end of the insulating heat exchange component that abuts against the charging device protrudes from the top surface of the boss.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] In this wireless charger, when the thermoelectric cooler is working, the cooling energy generated on the low-temperature side of the thermoelectric cooler can be transferred to the insulating heat exchanger through the wireless transmitting coil assembly. The insulating heat exchanger then directly contacts the charging device to cool it down, resulting in faster cooling compared to existing technologies. Simultaneously, the heat generated on the high-temperature side of the thermoelectric cooler is transferred to the first heat sink, and the heat generated by the circuit board is transferred to the second heat sink. Air is then blown through a blower into the heat dissipation channel between the second and first heat sinks, allowing the hot air to exit the casing through the air outlet. This further promotes cooling of both the first and second heat sinks, improving not only the heat dissipation of the charging device but also the thermoelectric cooler and circuit board, thus enhancing the user experience. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the first structure of the wireless charger in this embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the second structure of the wireless charger in an embodiment of this utility model;

[0035] Figure 3 for Figure 2 A cross-sectional view of surface AA;

[0036] Figure 4 for Figure 2 A cross-sectional view of the BB side;

[0037] Figure 5 for Figure 3 Enlarged view of point C;

[0038] Figure 6 This is an exploded view of the wireless charger in an embodiment of this utility model;

[0039] Figure 7 This is a partial structural diagram of the wireless charger in an embodiment of the present invention.

[0040] Figure label:

[0041] 100. Charging device; 101. Protrusion; 1. Housing; 1a. Bottom shell; 1b. Cover; 1b1. First through hole; 1c. Front shell; 1c1. Second through hole; 11. Mounting through hole; 12. Air outlet; 13. Air inlet; 14. Mounting bracket; 15. Clearance structure; 16. Boss; 17. Positioning structure; 18. Receiving groove; 191. Fixing part; 192. Flanged edge; 2. Insulating heat exchange component; 3. Wireless transmitting coil assembly; 31. Ferrite; 32. Transmitting coil body; 4. Semiconductor cooling chip; 5. Circuit board; 61. First heat sink; 611. First plate; 612. First fin; 62. Second heat sink; 621. Second plate; 622. Second fin; 63. Heat dissipation channel; 7. Blower; 8. Heat insulation component; 81. Second groove; 9. Shielding component. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0049] like Figure 1-7 As shown, this embodiment provides a wireless charger, including a housing 1, an insulating heat exchanger 2, a wireless transmitting coil assembly 3, a semiconductor cooling chip 4, a circuit board 5, a first heat sink 61, a second heat sink 62, and a blower 7. The wireless transmitting coil assembly 3, the semiconductor cooling chip 4, and the blower 7 are all communicatively connected to the circuit board 5. One side of the housing 1 has a mounting through hole 11, and the other side of the housing 1 has an air outlet 12. The insulating heat exchanger 2 is embedded in the mounting through hole 11 and can come into contact with the charging device 100 to exchange heat. The wireless transmitting coil assembly 3 and the semiconductor cooling chip 4 are both fixed inside the housing 1. One side of the wireless transmitting coil assembly 3 abuts against the low-temperature side of the semiconductor cooling chip 4, and the other side abuts against the insulating heat exchange component 2. The first heat sink 61 is fixed to the high-temperature side of the semiconductor cooling chip 4. The circuit board 5 is fixed inside the housing 1, and the second heat sink 62 is fixed to one side of the circuit board 5. A heat dissipation channel 63 is provided between the second heat sink 62 and the first heat sink 61. One end of the heat dissipation channel 63 is connected to the air outlet 12. The blower 7 is used to blow air into the heat dissipation channel 63.

[0050] When the semiconductor cooling chip 4 is working, the cold energy generated on the low-temperature side of the semiconductor cooling chip 4 can be transferred to the insulating heat exchanger 2 through the wireless transmitting coil assembly 3, and then directly contact the charging device 100 through the insulating heat exchanger 2 to cool down the charging device 100. Compared with the prior art, the cooling speed is faster.

[0051] Meanwhile, the heat generated by the high-temperature side of the semiconductor cooling chip 4 is transferred to the first heat sink 61, and the heat generated by the circuit board 5 is transferred to the second heat sink 62. The heat is then blown into the heat dissipation channel 63 between the second heat sink 62 and the first heat sink 61 by the blower 7, so that the hot air in the heat dissipation channel 63 is discharged from the housing 1 through the air outlet 12, thereby promoting the cooling of the first heat sink 61 and the second heat sink 62.

[0052] The wireless charger in this embodiment can not only improve the heat dissipation of the charging device 100, but also improve the heat dissipation of the semiconductor cooling chip 4 and the circuit board 5, thereby enhancing the user experience.

[0053] For example, the insulating heat exchanger 2 is a ceramic plate with high thermal conductivity, which is beneficial to improving the heat dissipation efficiency of the charging device 100.

[0054] Optionally, the blower 7 is a centrifugal fan, which is located at one end of the heat dissipation channel 63 away from the air outlet 12, which helps to reduce the size of the wireless charger.

[0055] Specifically, a centrifugal fan is housed inside the housing 1, and the housing 1 has an air inlet 13 corresponding to the air inlet of the centrifugal fan. Furthermore, the air outlet of the centrifugal fan is positioned directly opposite the heat dissipation channel 63 to ensure sufficient airflow into the heat dissipation channel 63.

[0056] Optionally, a first insulating thermally conductive material is provided between the wireless transmitting coil assembly 3 and the insulating heat exchanger 2 to improve the heat exchange efficiency between the wireless transmitting coil assembly 3 and the insulating heat exchanger 2 and to ensure insulation.

[0057] Optionally, a second insulating thermally conductive material is provided between the wireless transmitting coil assembly 3 and the low-temperature side of the semiconductor cooling chip 4 to improve the heat exchange efficiency between the wireless transmitting coil assembly 3 and the low-temperature side of the semiconductor cooling chip 4 and to ensure insulation.

[0058] Optionally, a third insulating thermally conductive material is provided between the first heat sink 61 and the high-temperature side of the semiconductor cooling chip 4 to improve the heat exchange efficiency between the first heat sink 61 and the high-temperature side of the semiconductor cooling chip 4 and to ensure insulation.

[0059] Optionally, a fourth insulating thermally conductive material is provided between the second heat sink 62 and the circuit board 5 to improve the heat exchange efficiency between the second heat sink 62 and the circuit board 5 and to ensure insulation.

[0060] For example, the first insulating and thermally conductive material is thermally conductive silicone grease. The second insulating and thermally conductive material is thermally conductive silicone grease. The third insulating and thermally conductive material is thermally conductive silicone grease. The fourth insulating and thermally conductive material is thermally conductive silicone grease.

[0061] Specifically, the wireless transmitting coil assembly 3 includes a ferrite 31 and a transmitting coil body 32 fixedly connected to the ferrite 31. The ferrite 31 is connected to the low-temperature side of the semiconductor cooling chip 4, and the transmitting coil body 32 and the insulating heat exchanger 2 are sealed by filling with a second insulating thermally conductive material.

[0062] It should be noted that, since the insulating heat exchanger 2 is in direct contact with the charging device 100, the transmitting coil body 32 in this embodiment can only use a single coil, and the specifications of the single coil are not limited in this embodiment. For example, the single coil can be set with reference to the MP-A13 inductance and size in the Qi protocol (i.e., the "wireless charging" standard launched by the Wireless Power Consortium).

[0063] Optionally, the wireless charger also includes a heat insulation component 8, which is sandwiched between the wireless transmitting coil assembly 3 and the first heat sink 61. The heat insulation component 8 surrounds the outside of the thermoelectric cooler 4 along the thickness direction of the thermoelectric cooler 4. In this way, the heat insulation component 8 can isolate the low-temperature side and the high-temperature side of the thermoelectric cooler 4, as well as the wireless transmitting coil assembly 3 and the first heat sink 61, thereby reducing the heat exchange between the low-temperature side and the high-temperature side of the thermoelectric cooler 4, and between the wireless transmitting coil assembly 3 and the first heat sink 61, improving the working efficiency of the thermoelectric cooler 4, and reducing energy consumption.

[0064] Optionally, the wireless charger also includes a shield 9, which has a central hole that is fitted onto the outside of the wireless transmitting coil assembly 3. In other words, the wireless transmitting coil assembly 3 passes through the central hole of the shield 9, thus preventing interference with the wireless transmitting coil assembly 3.

[0065] Furthermore, the wireless charger also includes an NFC antenna, which is integrated into the shield 9 and communicates with the circuit board 5. This high level of integration makes it easy to assemble and also helps to reduce the size of the wireless charger.

[0066] Optionally, the wireless charger also includes a first temperature detection element, which is used to detect the temperature of the wireless transmitting coil assembly 3. The first temperature detection element is communicatively connected to the circuit board 5, so that when the temperature of the wireless transmitting coil assembly 3 detected by the first temperature detection element exceeds the temperature threshold of the wireless transmitting coil assembly 3, the power of the wireless transmitting coil assembly 3 can be reduced by the circuit board 5 until charging stops, so as to improve safety.

[0067] Optionally, the wireless charger also includes a second temperature detection element, which is used to detect the temperature of the high-temperature side of the thermoelectric cooler 4. The second temperature detection element is communicatively connected to the circuit board 5. When the second temperature detection element detects that the temperature of the high-temperature side of the thermoelectric cooler 4 exceeds the temperature threshold of the high-temperature side of the thermoelectric cooler 4, the circuit board 5 controls the power of the wireless transmitting coil assembly 3 to reduce until charging stops, so as to protect the thermoelectric cooler 4 and improve safety.

[0068] Optionally, the wireless charger also includes a third temperature detection device, which is used to detect the temperature of the low-temperature side of the thermoelectric cooler 4. The third temperature detection device is communicatively connected to the circuit board 5. When the third temperature detection device detects that the temperature of the low-temperature side of the thermoelectric cooler 4 exceeds the temperature threshold of the low-temperature side of the thermoelectric cooler 4, the circuit board 5 controls the power of the wireless transmitting coil assembly 3 to reduce until charging stops, so as to protect the thermoelectric cooler 4 and improve safety.

[0069] It should be noted that the temperature threshold of the wireless transmitting coil assembly 3, the temperature threshold of the high-temperature side of the thermoelectric cooler 4, and the temperature threshold of the low-temperature side of the thermoelectric cooler 4 are known values ​​and can be determined through repeated experiments.

[0070] For example, a first temperature sensor is fixed on the shield 9 near the wireless transmitting coil assembly 3. A second temperature sensor is fixed on the shield 9, and its sensing end passes through the heat insulation member 8 and is located on the high-temperature side of the thermoelectric cooler 4. A third temperature sensor is fixed on the shield 9, and its sensing end passes through the heat insulation member 8 and is located on the low-temperature side of the thermoelectric cooler 4.

[0071] For example, the first temperature detection element, the second temperature detection element, and the third temperature detection element are all temperature sensors.

[0072] Optionally, the first heat sink 61 and the second heat sink 62 do not contact each other, thereby preventing heat from being transferred between the first heat sink 61 and the second heat sink 62, which protects the semiconductor cooling chip 4 and the circuit board 5.

[0073] Specifically, a mounting bracket 14 is fixed inside the housing 1, and the first heat sink 61 and the second heat sink 62 are respectively fixed to both ends of the mounting bracket 14 so that the first heat sink 61 and the second heat sink 62 do not contact each other. For example, the mounting bracket 14 is a plastic bracket, which has good insulation and can also reduce the heat transfer between the first heat sink 61 and the second heat sink 62 through the mounting bracket 14.

[0074] Optionally, the first heat sink 61 includes a first plate 611 and at least one first fin 612. The first plate 611 includes a first plate surface and a second plate surface that are disposed opposite to each other along its thickness direction. The first plate surface is fixedly connected to the high-temperature side of the semiconductor cooling chip 4. The first fins 612 are all fixedly disposed on the second plate surface, thereby increasing the contact area between the first heat sink 61 and the high-temperature side of the semiconductor cooling chip 4, as well as the contact area between the first heat sink 61 and the air inside the housing 1, thereby improving the heat exchange efficiency.

[0075] Furthermore, the first fin 612 is parallel to the airflow direction of the blower 7, so that the first fin 612 will not affect the airflow speed, which is beneficial to ensuring the heat dissipation efficiency of the semiconductor cooling chip 4.

[0076] Optionally, the second heat sink 62 includes a second plate 621 and at least one second fin 622. The second plate 621 includes a plate surface one and a plate surface two disposed opposite to each other along its thickness direction. The plate surface one is fixedly connected to the circuit board 5. The second fins 622 are all fixedly disposed on the plate surface two, thereby increasing the contact area between the second heat sink 62 and the circuit board 5, as well as the contact area between the second heat sink 62 and the air inside the housing 1, and improving the heat exchange efficiency.

[0077] Furthermore, the second fin 622 is parallel to the airflow direction of the blower 7, so that the second fin 622 will not affect the airflow speed, which is beneficial to ensuring the heat dissipation efficiency of the circuit board 5.

[0078] Optionally, the charging device 100 has a protrusion 101 on the side that abuts against the insulating heat exchanger 2, and the housing 1 has a clearance structure 15 corresponding to the protrusion 101. This can prevent the protrusion 101 from abutting against the housing 1 and leaving the charging device 100 suspended in the air, which is beneficial to increasing the contact area between the insulating heat exchanger 2 and the charging device 100 and improving the cooling efficiency of the charging device 100.

[0079] For example, when the charging device 100 is an electronic product such as a mobile phone or tablet, the protrusion 101 is a rear camera.

[0080] Specifically, the avoidance structure 15 is a first groove provided on the side of the housing 1 that abuts against the charging device 100. The first groove avoids the protrusion 101 of the charging device 100. The structure is simple and easy to process and manufacture.

[0081] Furthermore, the heat insulation component 8 is provided with a second groove 81, and the shielding component 9 is disposed in the second groove 81, thereby reducing the height of the shielding component 9 and reserving space for the first groove.

[0082] like Figure 6 As shown, optionally, a boss 16 is provided on one side of the housing 1, and a mounting through hole 11 is provided on the top surface of the boss 16. The end of the insulating heat exchanger 2 that abuts against the charging device 100 protrudes from the top surface of the boss 16. On the one hand, this allows the insulating heat exchanger 2 to fully contact the charging device 100 and ensure heat exchange efficiency. On the other hand, it increases the height of the insulating heat exchanger 2 to avoid the first groove being too deep, which would affect the arrangement of other structures inside the housing 1.

[0083] It is understandable that the wireless transmitting coil assembly 3 and the wireless receiving coil assembly of the charging device 100 are located on both sides of the insulating heat exchanger 2 along the first direction.

[0084] Optionally, when the charging device 100 is charged using the wireless charger of this embodiment, the insulating heat exchanger 2 abuts against the charging device 100. Along the first direction, the orthographic projection of the wireless receiving coil assembly of the charging device 100 is located within the orthographic projection of the insulating heat exchanger 2, thereby improving the heat exchange efficiency and cold energy utilization between the insulating heat exchanger 2 and the charging device 100, and further improving the heat dissipation effect of the charging device 100.

[0085] Optionally, along the first direction, the orthographic projection of the wireless transmitting coil assembly 3 is located within the orthographic projection of the insulating heat exchanger 2, which can improve the heat exchange efficiency between the wireless transmitting coil assembly 3 and the insulating heat exchanger 2, as well as the cold energy utilization rate, and further improve the heat dissipation effect of the charging device 100.

[0086] Optionally, the housing 1 is provided with a positioning structure 17, which can abut against the charging device 100 so that the insulating heat exchanger 2 is positioned directly opposite the wireless receiving coil assembly of the charging device 100, thereby improving the temperature uniformity of the wireless receiving coil assembly of the charging device 100 and achieving better heat dissipation.

[0087] It should be noted that the insulating heat exchanger 2 is positioned directly opposite the wireless receiving coil assembly of the charging device 100. That is, along the first direction, the center line of the insulating heat exchanger 2 coincides with the center line of the wireless receiving coil assembly of the charging device 100.

[0088] Specifically, the positioning structure 17 is a positioning protrusion located on the side of the housing 1 that contacts the charging device 100. It has a simple structure and is easy to manufacture.

[0089] Optionally, the housing 1c is also provided with a receiving groove 18 for accommodating the charging device 100, and the insulating heat exchange element 2 and the positioning structure 17 are both disposed in the receiving groove 18. When the charging device 100 needs to be charged, placing the charging device 100 in the receiving groove 18 can prevent the charging device 100 from shifting during the charging process and ensure charging efficiency.

[0090] Optionally, combined Figure 3 and Figure 7 As shown, the housing 1 also includes a fixing part 191, which is used to fix and connect with the cabin of a vehicle or aircraft, thereby facilitating the application of the wireless charger to the vehicle or aircraft and facilitating the assembly of the housing 1 with the cabin of the vehicle or aircraft.

[0091] Specifically, the fixing part 191 is a fixing lug provided on both sides of the shell 1, which can be fixedly connected to the cabin of the vehicle or aircraft by fasteners such as bolts.

[0092] Optionally, the shell 1 is also provided with a flange 192, which facilitates matching with the cabin of a vehicle or aircraft and improves aesthetics.

[0093] Optionally, the housing 1 includes a bottom shell 1a and a cover 1b. One end of the bottom shell 1a has an opening, and the cover 1b is placed over the opening to close it, thereby facilitating the assembly of the wireless charger.

[0094] Furthermore, the housing 1 also includes a faceplate 1c, which is fixed to the side of the cover 1b opposite to the bottom shell 1a. That is, when charging using the wireless charger of this embodiment, the charging device 100 is placed on the faceplate 1c. This arrangement not only facilitates the manufacture of the housing 1, but also facilitates the assembly of the housing 1 with the cabin of a vehicle or aircraft.

[0095] It is understandable that the insulating heat exchanger 2, the clearance structure 15, the positioning structure 17, and the flange 192 are all located on the face shell 1c.

[0096] Specifically, both ends of the faceplate 1c are provided with flanges 192. It should be noted that the size and shape of the flanges 192 located at both ends of the faceplate 1c can be selected according to specific needs and are not limited here.

[0097] Specifically, the cover 1b is provided with a first through hole 1b1, and the face shell 1c is provided with a second through hole 1c1. The second through hole 1c1 corresponds to and communicates with the first through hole 1b1 to form the aforementioned mounting through hole 11. One end of the insulating heat exchanger 2 passes through the second through hole 1c1 and is fixed in the first through hole 1b1.

[0098] Specifically, the air outlet 12 is located on the side wall of the bottom shell 1a, which facilitates the rapid discharge of hot air from the heat dissipation channel 63 into the shell 1 and prevents the hot air from contacting the charging device 100, thus affecting the heat dissipation effect of the charging device 100.

[0099] Specifically, the cover 1b is made of plastic, which provides good insulation. The bottom shell 1a is made of metal, which improves the heat dissipation of the wireless charger.

[0100] Furthermore, the cover 1b is provided with a plurality of positioning blocks corresponding to the wireless transmitting coil assembly 3. The plurality of positioning blocks abut against the periphery of the wireless transmitting coil assembly 3 to fix the wireless transmitting coil assembly 3 and ensure insulation. Specifically, the plurality of positioning blocks abut against the periphery of the ferrite 31.

[0101] For example, the working principle of the wireless charger in this embodiment is as follows:

[0102] When the wireless charger is working, current passes through the thermoelectric cooler 4, causing heat to be transferred from one side of the thermoelectric cooler 4 to the other side. In other words, the thermoelectric cooler 4 will have a high temperature on one side and a low temperature on the other side.

[0103] The low temperature of the conductor cooling chip will reduce the temperature of the wireless transmitting coil assembly 3. The wireless transmitting coil assembly 3 will then transfer the cooling energy to the insulating heat exchanger 2, so that the insulating heat exchanger 2 can directly contact the charging device 100 for cooling, which can improve the cooling speed of the charging device 100 and achieve a better cooling effect.

[0104] The high temperature of the conductor cooling chip will raise the temperature of the first heat sink 61. Simultaneously, the heat generated by the circuit board 5 will raise the temperature of the second heat sink 62. A centrifugal fan draws ambient air into the heat dissipation channel 63, where it exchanges heat with the first and second heat sinks 61 and 62 to cool them. Finally, the hot air in the heat dissipation channel 63 is discharged from the housing 1 through the air outlet 12 to ensure the wireless charger functions properly.

[0105] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A wireless charger, characterized in that, include: The housing (1) has a mounting through hole (11) on one side and an air outlet (12) on the other side. An insulating heat exchanger (2) is embedded in the mounting through hole (11) and can come into contact with the charging device (100) to exchange heat. The wireless transmitting coil assembly (3) and the semiconductor cooling chip (4) are both fixed inside the housing (1). One side of the wireless transmitting coil assembly (3) abuts against the low temperature side of the semiconductor cooling chip (4), and the other side abuts against the insulating heat exchanger (2). The first heat sink (61) is fixed to the high-temperature side of the semiconductor cooling chip (4); Circuit board (5) and second heat sink (62), the circuit board (5) is fixed inside the housing (1), the second heat sink (62) is fixed on one side of the circuit board (5), a heat dissipation channel (63) is provided between the second heat sink (62) and the first heat sink (61), and one end of the heat dissipation channel (63) is connected to the air outlet (12). A blower (7) is used to blow air into the heat dissipation channel (63); The wireless transmitting coil assembly (3), the semiconductor cooling chip (4), and the blower (7) are all communicatively connected to the circuit board (5).

2. The wireless charger according to claim 1, characterized in that, A first insulating thermally conductive material is provided between the wireless transmitting coil assembly (3) and the insulating heat exchanger (2); and / or, A second insulating thermally conductive material is provided between the wireless transmitting coil assembly (3) and the low-temperature side of the semiconductor cooling chip (4); and / or, A third insulating thermally conductive material is provided between the first heat sink (61) and the high-temperature side of the semiconductor cooling chip (4); and / or, A fourth insulating and thermally conductive material is provided between the second heat sink (62) and the circuit board (5).

3. The wireless charger according to claim 1, characterized in that, The wireless charger also includes a heat insulation component (8), which is sandwiched between the wireless transmitting coil assembly (3) and the first heat sink (61), and the heat insulation component (8) surrounds the outside of the semiconductor cooling chip (4) in the thickness direction.

4. The wireless charger according to claim 1, characterized in that, The wireless charger also includes a shield (9) with a central hole that is fitted onto the outside of the wireless transmitting coil assembly (3).

5. The wireless charger according to claim 1, characterized in that, The wireless charger further includes a first temperature detection element for detecting the temperature of the wireless transmitting coil assembly (3), and the first temperature detection element is communicatively connected to the circuit board (5); and / or, The wireless charger further includes a second temperature detection element, which is used to detect the temperature of the high-temperature side of the semiconductor cooling chip (4), and the second temperature detection element is communicatively connected to the circuit board (5); and / or, The wireless charger also includes a third temperature sensor, which is used to detect the temperature of the low-temperature side of the semiconductor cooling chip (4) and is communicatively connected to the circuit board (5).

6. The wireless charger according to claim 1, characterized in that, The first heat sink (61) and the second heat sink (62) do not contact each other.

7. The wireless charger according to claim 1, characterized in that, The housing (1) is provided with a positioning structure (17) which can abut against the charging device (100) so that the insulating heat exchanger (2) is positioned opposite the wireless receiving coil assembly of the charging device (100).

8. The wireless charger according to claim 1, characterized in that, When the insulating heat exchanger (2) comes into contact with the charging device (100), along the first direction, the orthographic projection of the wireless receiving coil assembly of the charging device (100) lies within the orthographic projection of the insulating heat exchanger (2); and / or, Along the first direction, the orthographic projection of the wireless transmitting coil assembly (3) lies within the orthographic projection of the insulating heat exchanger (2); The wireless transmitting coil assembly (3) and the wireless receiving coil assembly of the charging device (100) are respectively located on both sides of the insulating heat exchanger (2) along the first direction.

9. The wireless charger according to any one of claims 1-8, characterized in that, The charging device (100) has a protrusion (101) on the side that abuts against the insulating heat exchanger (2), and the housing (1) has a clearance structure (15) corresponding to the protrusion (101).

10. The wireless charger according to claim 9, characterized in that, A boss (16) is provided on one side of the housing (1), and the mounting through hole (11) is provided on the top surface of the boss (16). The end of the insulating heat exchanger (2) that abuts against the charging device (100) protrudes from the top surface of the boss (16).

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