Refrigeration type wireless charging module

Abstract

A refrigeration type wireless charging module disclosed by the present invention comprises a seat body, a wireless charging module, a TEC, a hot end heat exchanger, a cold end heat exchanger, a hot end heat exchange fan, a cold end heat exchange fan, a fluid soaking device and an air guide channel, the seat body is provided with a charging position, and the wireless charging module is located below the charging position. During charging, the refrigerating end of the TEC starts to refrigerate, the heating end of the TEC starts to heat, heat of the heating end of the TEC can be efficiently conducted to the hot end heat exchanger through the fluid soaking device, the heat dissipation efficiency is greatly improved, the heat dissipation bottleneck problem of the hot end of a traditional TEC module is effectively solved, and then the refrigerating effect is guaranteed. The refrigerating capacity of the TEC refrigerating end is transmitted to the cold end heat exchanger, the cold end heat exchange fan drives air to move to pass through the cold end heat exchanger to exchange heat with fins of the cold end heat exchanger, the cooled air is blown to the charging position through the air guide channel, the purpose of cooling the charging device and the wireless charging module is achieved, and the heat dissipation and cooling effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless charging, and in particular to a refrigeration type wireless charging module. Background Art

[0002] A wireless charger is a device that uses the principle of electromagnetic induction to charge. Its principle is similar to that of a transformer. By placing a coil at the sending and receiving ends, the sending coil sends an electromagnetic signal to the outside world under the action of electricity, and the receiving coil receives the electromagnetic signal and converts it into current, thereby achieving the purpose of wireless charging. Wireless charging technology is a special power supply method that does not require a power cord, relies on electromagnetic wave propagation, and then converts electromagnetic wave energy into electrical energy, ultimately achieving wireless charging.

[0003] In the process of converting electrical energy into magnetic field energy by the wireless charging transmitting coil, part of the energy will inevitably be converted into heat energy. However, due to the lack of cooling and heat dissipation systems, existing wireless chargers cannot dissipate the generated heat energy out of the charger in time, which often causes the temperature of the charger, especially the transmitting coil, to be too high during use, which not only seriously affects the charging efficiency of the wireless charger, but also brings certain safety hazards to users.

[0004] Therefore, cooling type wireless charging products are introduced on the market, such as the utility model with announcement number "CN220797830U" and the name "a self-cooling wireless charging stand", which discloses a self-cooling wireless charging stand, which includes a stand, a first wireless charging module is provided on the inner side of the stand, the first wireless charging module includes a heat conductive lining plate and a coil provided on the heat conductive lining plate, a first heat conductive sheet is provided on the inner side of the coil, a first PCB board is provided below the heat conductive lining plate, a receiving port is provided on the first PCB board, a semiconductor refrigerator is embedded in the receiving port, the cold end face of the semiconductor refrigerator is attached to the first wireless charging module, a heat sink is provided below the first PCB board, and the hot end face of the semiconductor refrigerator is attached to the heat sink. Compared with the prior art, although it can cool down the coil and the back of the mobile phone, the hot end face of the semiconductor refrigerator is directly attached to the heat sink or a conventional heat conductive sheet such as heat conductive silicone grease is used to transfer heat, and the thermal conductivity is not very high, resulting in a not very ideal heat dissipation effect. Summary of the invention

[0005] In view of the above-mentioned shortcomings, an object of the present invention is to provide a refrigeration type wireless charging module with reasonable structural design and improved heat dissipation effect.

[0006] To achieve the above purpose, the technical solution provided by the present invention is:

[0007] A refrigeration type wireless charging module, comprising a seat, a wireless charging module, TEC, a hot-end heat exchanger, a cold-end heat exchanger, a hot-end heat exchange fan, a cold-end heat exchange fan, a fluid heat equalization device and an air duct, wherein the seat is provided with a charging position for placing a charging device, the wireless charging module is located below the charging position, the cold-end heat exchanger is in contact with the cooling end of the TEC, one end of the fluid heat equalization device is in contact with the heating end of the TEC, and the other end is in contact with the hot-end heat exchanger; the hot-end heat exchange fan is arranged on the hot-end heat exchanger, and the air outlet of the hot-end heat exchange fan faces the hot-end heat exchanger; the cold-end heat exchange fan is located on one side of the cold-end heat exchanger, and the air outlet of the cold-end heat exchange fan is connected to the air inlet end of the cold-end heat exchanger, the air outlet end of the cold-end heat exchanger is connected to one end of the air duct, and the other end of the air duct extends to the charging position.

[0008] As a preferred solution of the present invention, the fluid heat-spreading device is a heat pipe or a heat-spreading plate. The heat pipe or the heat-spreading plate has a high thermal conductivity. The equivalent thermal conductivity of the heat pipe and the heat-spreading plate is more than 100 times that of copper alone, and can reach more than 2000 times that of thermal conductive silicone grease. Adding a heat pipe or a heat-spreading plate at the hot end can quickly transfer the heat of the TEC to the hot end heat exchanger, effectively improving the heat transfer bottleneck problem of the traditional TEC module, that is, how to effectively transfer the heat of the hot end to the hot end heat exchanger more effectively.

[0009] As a preferred solution of the present invention, the hot end heat exchanger includes a plurality of fins fixed together by a buckle FIN process. Alternatively, the hot end heat exchanger includes a substrate and fins formed on the substrate by a shovel tooth process. The hot end heat exchanger made by the buckle FIN process or the shovel tooth process has a fin area much larger than that of a heat sink made by a die casting process, which effectively improves the heat exchange bottleneck problem of the traditional TEC module, that is, how to make the fin area more compatible with the heat of the hot and cold ends of the TEC.

[0010] As a preferred solution of the present invention, the hot end heat exchange fan is an axial flow fan. The axial flow fan has the characteristics of large air volume and low noise, and can effectively take away the heat of the hot end heat exchanger. This effectively improves the flow bottleneck problem of the traditional TEC module and is more compatible with the thermal design requirements of TEC.

[0011] As a preferred solution of the present invention, one end of the cold end heat exchanger is connected to the air outlet of the cold end heat exchange fan, and the other end is lowered in height. The height of the cold end heat exchanger is reduced, thereby greatly reducing the area of ​​the cold end fins by nearly 80%, effectively reducing the cost of the product.

[0012] As a preferred solution of the present invention, the cold end heat exchange fan is a centrifugal fan. The centrifugal fan has the characteristics of high wind pressure and long air supply distance, which improves the cooling effect.

[0013] As a preferred solution of the present invention, thermal grease or solder is provided between the cold end heat exchanger and the cooling end of the TEC. The thermal grease or solder can fill the small gap between the cold end heat exchanger and the cooling end of the TEC, and can further improve the heat conduction efficiency.

[0014] As a preferred solution of the present invention, the seat body includes a face seat, a bottom shell and an inner seat, the top surface of the bottom shell is provided with an opening, the face seat is closed on the opening, the inner seat is arranged on the bottom surface of the face seat, the fluid heat equalizing device, the cold end heat exchanger, the cold end heat exchange fan and the hot end heat exchanger are all arranged on the inner seat, with a compact structure and a small volume.

[0015] As a preferred solution of the present invention, the bottom shell is provided with air outlets at positions corresponding to the hot-end heat exchange fan and the cold-end heat exchange fan, which is beneficial to air intake and improves the heat dissipation effect.

[0016] The beneficial effects of the present invention are as follows: the structural design of the present invention is reasonable. When charging, the cooling end of the TEC starts to cool and the heating end starts to heat. The fluid heat equalization device can efficiently transfer the heat of the TEC heating end to the hot end heat exchanger, greatly improving the heat dissipation efficiency, effectively solving the heat dissipation bottleneck problem of the hot end of the traditional TEC module, and thus ensuring the cooling effect. The cooling capacity of the TEC cooling end is transferred to the cold end heat exchanger, and the cold end heat exchange fan drives the air to move through the cold end heat exchanger to exchange heat with the fins of the cold end heat exchanger. The cooled air is blown to the charging position through the air duct, achieving the purpose of cooling the charging device and the wireless charging module, and the heat dissipation and cooling effect is good.

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the present invention when the charging device is taken out.

[0020] Figure 3 It is a cross-sectional structural schematic diagram of the present invention.

[0021] Figure 4 It is a schematic diagram of the decomposition structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the internal structure of the present invention. DETAILED DESCRIPTION

[0023] For example, see Figure 1 and Figure 5 The present embodiment provides a cooling type wireless charging module, which includes a base body 1, a wireless charging module 2, a TEC 3, a hot end heat exchanger 4, a cold end heat exchanger 5, a hot end heat exchange fan 6, a cold end heat exchange fan 7, a fluid heat equalizing device 8 and an air guide 9.

[0024] The seat body 1 is provided with a charging position 111 for placing the charging device 10, and the wireless charging module 2 is located below the charging position 111. Specifically, the seat body 1 includes a surface seat 11, a bottom shell 12 and an inner seat 13, the top surface of the bottom shell 12 is provided with an opening, the surface seat 11 is closed on the opening, and the inner seat 13 is fixed to the bottom surface of the surface seat 11 by screws or other means.

[0025] A flow groove 131 adapted to the shape of the fluid heat equalizing device 8 is provided on the lower surface of the inner seat 13. The flow groove 131 is used to accommodate the fluid heat equalizing device 8. After installation, the fluid heat equalizing device 8, the cold end heat exchanger 5, the cold end heat exchange fan 7 and the hot end heat exchanger 4 are all arranged on the inner seat 13, with a compact structure and a small volume. Preferably, the bottom shell 12 is provided with an air outlet 121 at the position corresponding to the hot end heat exchange fan 6 and the cold end heat exchange fan 7, which is conducive to air intake and improves the heat dissipation effect. Ventilation holes 122 can also be provided on the bottom surface or side wall of the bottom shell 12 to facilitate space circulation and heat dissipation.

[0026] The cold end heat exchanger 5 is in contact with the cooling end of the TEC 3. Preferably, thermal grease or solder is provided between the cold end heat exchanger 5 and the cooling end of the TEC 3. The thermal grease or solder can fill the small gap between the cold end heat exchanger 5 and the cooling end of the TEC 3, and can further improve the heat conduction efficiency.

[0027] One end of the fluid heat equalizing device 8 is in contact with the heating end of the TEC3, and the other end is in contact with the hot end heat exchanger 4; preferably, the fluid heat equalizing device 8 is preferably a heat pipe. In other embodiments, the fluid heat equalizing device 8 can also be a heat spreader. The heat pipe or heat spreader has a high thermal conductivity. The equivalent thermal conductivity of the heat pipe and the heat spreader is more than 100 times that of copper alone, and can reach more than 2000 times that of thermal grease. Adding a heat pipe or heat spreader at the hot end can quickly transfer the heat of TEC3 to the hot end heat exchanger 4, effectively improving the heat transfer bottleneck problem of the traditional TEC module, that is, how to effectively transfer the hot end heat to the hot end heat exchanger 4 more effectively.

[0028] The cold end heat exchange fan 7 is located on one side of the cold end heat exchanger 5, and the air outlet of the cold end heat exchange fan 7 is connected to the air inlet of the cold end heat exchanger. The cold end heat exchange fan 7 is located on one side of the cold end heat exchanger 5, and the air outlet of the cold end heat exchange fan 7 faces the cold end heat exchanger 5. Preferably, one end of the cold end heat exchanger 5 is connected to the air outlet of the cold end heat exchange fan 7, and the height of the other end is reduced. The height of the cold end heat exchanger 5 is reduced, and the area of ​​the cold end fins is greatly reduced. The area reduction is close to 80%, which effectively reduces the cost of the product. The cold end heat exchange fan 7 is preferably a centrifugal fan. The centrifugal fan has the characteristics of high wind pressure and long air supply distance, which improves the cooling effect.

[0029] The hot-end heat exchange fan 6 is arranged on the hot-end heat exchanger 4, and the air outlet of the hot-end heat exchange fan 6 faces the hot-end heat exchanger 4. In this embodiment, the hot-end heat exchanger 4 includes a plurality of fins fixed together by a buckle FIN process. In other embodiments, the hot-end heat exchanger 4 may also include a substrate and fins formed on the substrate by a scraping tooth process. Under working conditions, the COP (thermoelectric cooling efficiency) of TEC is generally around 0.5, and COP = cooling capacity / heat generation. That is to say, under working conditions, for every 1W of cooling at the cold end of TEC, the hot end generates about 2W of heat. From the perspective of thermal design, the fin area required at the hot end should be more than twice that of the cold end, and the flow rate required at the hot end should also be more than twice that of the cold end in order to match the working characteristics of TEC. The hot-end heat exchanger 4 manufactured by the buckling FIN process or the shovel tooth process in the technical solution of this patent has a fin area much larger than that of the heat sink manufactured by the die-casting process. This effectively improves the heat exchange bottleneck problem of the traditional TEC module, that is, how to make the fin area better match the heat of the hot and cold ends of TEC3.

[0030] The hot end heat exchange fan 6 is preferably an axial flow fan. The axial flow fan has the characteristics of large air volume and low noise, and can effectively take away the heat of the hot end heat exchanger 4. This effectively improves the flow bottleneck problem of the traditional TEC module and is more compatible with the thermal design requirements of TEC.

[0031] The air outlet end of the cold end heat exchanger 5 is connected to one end of the air duct 9 , and the other end of the air duct 9 extends to the charging position 111 .

[0032] When charging, TEC3 is powered on, the cooling end of TEC3 starts cooling, and the heating end starts heating. The cooling capacity of the cooling end of TEC is transferred to the cold end heat exchanger 5 through thermal grease or solder, and the cold end heat exchange fan 7 drives the air to move through the cold end heat exchanger 5. The air exchanges heat with the fins of the cold end heat exchanger 5, and the temperature of the air passing through the fins of the cold end heat exchanger 5 is reduced. The cooled air is blown to the charging position 111 through the air duct 9, thereby achieving the purpose of cooling the charging device 10 and the wireless charging module 2, and the heat dissipation and cooling effect is good.

[0033] The heat generated by the TEC heating end is transferred to the hot-end fins through the heat pipe or the heat spreader. The axial fan in the hot-end air duct drives the air to move through the hot-end fins. The air exchanges heat with the hot-end heat exchanger 4. The temperature of the air passing through the fins of the hot-end heat exchanger 4 increases and is dissipated into the surrounding environment, effectively solving the bottleneck problem of heat dissipation at the hot end of the traditional TEC module, thereby ensuring the cooling effect.

[0034] According to the disclosure and teachings of the above specification, technicians in the field to which the present invention belongs can also change and modify the above implementation. Therefore, the present invention is not limited to the specific implementations disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation to the present invention. As described in the above embodiments of the present invention, other wireless charging modules obtained by using the same or similar structure are within the scope of protection of the present invention.

Claims

1. A refrigeration type wireless charging module, comprising a seat and a wireless charging module, characterized in that: It includes TEC, a hot-end heat exchanger, a cold-end heat exchanger, a hot-end heat exchange fan, a cold-end heat exchange fan, a fluid heat equalization device and an air duct. The seat is provided with a charging position for placing a charging device, and the wireless charging module is located below the charging position. The cold-end heat exchanger is in contact with the cooling end of the TEC, one end of the fluid heat equalization device is in contact with the heating end of the TEC, and the other end is in contact with the hot-end heat exchanger; the hot-end heat exchange fan is arranged on the hot-end heat exchanger, and the air outlet of the hot-end heat exchange fan faces the hot-end heat exchanger; the cold-end heat exchange fan is located on one side of the cold-end heat exchanger, and the air outlet of the cold-end heat exchange fan is connected to the air inlet end of the cold-end heat exchanger, the air outlet end of the cold-end heat exchanger is connected to one end of the air duct, and the other end of the air duct extends to the charging position.

2. The refrigeration type wireless charging module according to claim 1, characterized in that: The fluid heat equalizing device is a heat pipe or a heat equalizing plate.

3. The refrigeration type wireless charging module according to claim 1, characterized in that: The hot end heat exchanger includes a plurality of fins fixed together by a buckle FIN process.

4. The refrigeration type wireless charging module according to claim 1, characterized in that: The hot end heat exchanger comprises a base plate and fins formed on the base plate by using a scraping tooth process.

5. The refrigeration type wireless charging module according to claim 1, characterized in that: The hot end heat exchange fan is an axial flow fan.

6. The refrigeration type wireless charging module according to claim 1, characterized in that: One end of the cold end heat exchanger is connected to the air outlet of the cold end heat exchange fan, and the other end is lowered in height.

7. The refrigeration type wireless charging module according to claim 1 or 6, characterized in that: The cold end heat exchange fan is a centrifugal fan.

8. The refrigeration type wireless charging module according to claim 1 or 6, characterized in that: Thermal conductive silicone grease or solder is provided between the cold end heat exchanger and the cooling end of the TEC.

9. The refrigeration type wireless charging module according to any one of claims 1 to 6, characterized in that: The seat body includes a face seat, a bottom shell and an inner seat, the top surface of the bottom shell is provided with an opening, the face seat is closed on the opening, the inner seat is arranged on the bottom surface of the face seat, and the fluid heat equalizing device, the cold end heat exchanger, the cold end heat exchange fan and the hot end heat exchanger are all arranged on the inner seat.

10. The refrigeration type wireless charging module according to claim 9, characterized in that: The bottom shell is provided with air outlets at positions corresponding to the hot-end heat exchange fan and the cold-end heat exchange fan.

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