Wireless charging module and vehicle

Abstract

This application relates to the field of wireless charging technology, and in particular to a wireless charging module and vehicle. The wireless charging module includes an upper cover, a charging coil, a lower cover, a circuit board, a fan, and a connector interface. The upper and lower covers are connected to form a hollow cavity. The charging coil is fixed to the inner side of the upper cover. The circuit board is fixed to the inner side of the lower cover, and the connector interface is disposed on the lower cover and electrically connected to the circuit board. A first output interface on the circuit board is electrically connected to the fan, and a second output interface is electrically connected to the charging coil. The upper and lower covers respectively have a first ventilation hole and a third ventilation hole extending through themselves along their thickness direction. The fan is fixed to the outer side of the lower cover, and the fan can introduce outside air into the hollow cavity through the third ventilation hole and lead it out through the first ventilation hole. The wireless charging module and vehicle of this application solve the problem that the heat dissipation methods of existing in-vehicle wireless charging modules are limited and cannot meet practical needs.

Description

Technical Field

[0001] This application relates to the field of wireless charging technology, and in particular to a wireless charging module and vehicle. Background Technology

[0002] Mid-to-high-end cars are now equipped with wireless charging, making phone charging much more convenient. There's no need to carry a charging cable; simply place your phone in the designated area to charge. The advantages of wireless charging are: Convenience: Cars using wireless charging do not require connecting the phone to the car's infotainment system; simply place the phone in the designated area to charge, making it very convenient to use.

[0003] Good compatibility: When using a data cable to charge, you need to choose the appropriate data cable according to the phone's charging port, while wireless charging does not require differentiation and is compatible with various types of phones.

[0004] However, wireless charging also has some drawbacks, namely: The base is prone to overheating. During use, wireless charging involves some energy loss, causing the charging area to heat up. This could pose a safety hazard, possibly due to the following reasons: The wireless charging module itself may generate a lot of heat, which could affect the phone's temperature.

[0005] The current generates heat during the charging process.

[0006] If the ambient temperature is too high, using wireless charging in a high-temperature environment may make the phone feel even hotter.

[0007] While there are some heat dissipation methods for in-vehicle wireless charging modules, such as natural heat dissipation and simple thermal conductive materials to assist in heat dissipation, these methods have limited effectiveness for high-power, long-term wireless charging scenarios and are difficult to meet actual needs. Utility Model Content

[0008] The purpose of this application is to provide a wireless charging module and vehicle, thereby solving the problem that the heat dissipation methods of existing vehicle-mounted wireless charging modules are limited and cannot meet practical needs.

[0009] According to a first aspect of this application, a wireless charging module is provided, the wireless charging module having a thickness direction; the wireless charging module includes an upper cover, a charging coil, a lower cover, a circuit board, a fan, and a connector interface; the upper cover and the lower cover are connected to form a hollow cavity; the charging coil is fixed to the inner side of the upper cover; the circuit board is fixed to the inner side of the lower cover, and the connector interface is disposed on the lower cover and electrically connected to the circuit board; the circuit board is provided with a first output interface and a second output interface, the first output interface being electrically connected to the fan, and the second output interface being electrically connected to the charging coil; the upper cover and the lower cover are respectively provided with a first ventilation hole and a third ventilation hole penetrating themselves along the thickness direction; the fan is fixed to the outer side of the lower cover, and the fan can introduce outside air into the hollow cavity through the third ventilation hole and lead it out through the first ventilation hole.

[0010] In any of the above technical solutions, the lower cover is further provided with a first wiring hole that penetrates through itself along the thickness direction, and the fan is electrically connected to the first output interface through the first wiring hole; the lower cover is provided with a fan screw hole that penetrates through itself along the thickness direction, and the fan is fixedly connected to the lower cover through the fan screw hole.

[0011] In any of the above technical solutions, the first ventilation hole and the third ventilation hole are aligned in the thickness direction; the inner walls of the first ventilation hole and the third ventilation hole are connected with a grille.

[0012] In any of the above technical solutions, the wireless charging module further includes a magnetic ring; the magnetic ring is fixed to the inner side of the upper cover, and the charging coil is arranged around the magnetic ring.

[0013] In any of the above technical solutions, the upper cover is further made of PC or ABS; a silicone pad is provided on the outer side of the upper cover corresponding to the area of ​​the charging coil, and / or a positioning texture is provided on the outer side of the upper cover corresponding to the area of ​​the charging coil.

[0014] In any of the above technical solutions, the wireless charging module further includes a middle frame, a water tank, a water pump, and a radiator; the water tank, the water pump, and the radiator are all disposed outside the hollow cavity; the middle frame is connected between the upper cover and the lower cover, and the middle frame has a second ventilation hole that penetrates itself along the thickness direction; the first ventilation hole, the second ventilation hole, and the third ventilation hole are aligned in the thickness direction; a first cavity is formed between the upper cover and the middle frame, and a second cavity is formed between the middle frame and the lower cover; the fan can introduce outside air into the second cavity through the third ventilation hole, and then lead it out through the first ventilation hole after passing through the first cavity; the middle frame has a flow channel and an inlet and an outlet communicating with the flow channel; the outlet of the water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet, the outlet of the water pump is connected to the inlet, and the outlet is connected to the inlet of the water tank; the radiator is connected between the water pump and the inlet; the area of ​​the middle frame with the flow channel is in contact with the charging coil.

[0015] In any of the above technical solutions, the middle frame is further provided with a second wiring hole that extends through itself along the thickness direction; the charging coil is electrically connected to the second output interface through the second wiring hole.

[0016] In any of the above technical solutions, the wireless charging module further includes a vehicle controller and a temperature sensor, wherein the vehicle controller is electrically connected to the water pump; the temperature sensor can detect the temperature information inside the hollow cavity; the control circuit of the circuit board can control the start / stop and speed of the fan according to the temperature information fed back by the temperature sensor; and the vehicle controller can control the start / stop and speed of the water pump according to the temperature information fed back by the temperature sensor.

[0017] According to a second aspect of this application, a vehicle is provided, including the wireless charging module as described above; the vehicle further includes a first vehicle interface and a second vehicle interface, the first vehicle interface being electrically connected to the connector interface to supply power to the fan and the charging coil; the second vehicle interface being electrically connected to the water pump through the vehicle controller to supply power to the water pump.

[0018] In any of the above technical solutions, the upper cover, the middle frame, and the lower cover are further connected by screws, and the lower cover is provided with a mounting part; the lower cover is installed inside the vehicle through the mounting part.

[0019] The wireless charging module of this application has a thickness direction and includes an upper cover, a charging coil, a lower cover, a circuit board, a fan, and a connector interface. The upper and lower covers are connected to form a hollow cavity. The charging coil is fixed to the inner side of the upper cover, the circuit board is fixed to the inner side of the lower cover, and the connector interface is disposed on the lower cover and electrically connected to the circuit board. The circuit board has a first output interface and a second output interface. The first output interface is electrically connected to the fan, and the second output interface is electrically connected to the charging coil. The upper and lower covers respectively have a first ventilation hole and a third ventilation hole penetrating through themselves along the thickness direction. The fan is fixed to the outer side of the lower cover and can draw outside air into the hollow cavity through the third ventilation hole and out through the first ventilation hole.

[0020] Based on the above technical features, the beneficial effects of this application are as follows: During assembly, the connector interface (power input interface) is connected to the vehicle (vehicle infotainment system). The vehicle infotainment system supplies power to the fan and charging coil sequentially through the connector interface, circuit board, and first output interface (second output interface).

[0021] In practical use, the phone is placed on the charging area corresponding to the charging coil on the top cover for charging. During charging, the fan draws cool outside air into the hollow cavity through the third ventilation hole, blowing it onto the circuit board and charging coil, carrying away the heat inside the hollow cavity, and then expelling it through the first ventilation hole. Compared to existing technologies, this air-cooled heat dissipation method, which uses a fan to remove heat from the hollow cavity and then expelling it through the first ventilation hole, can meet the practical needs of high-power, long-term wireless charging scenarios.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the overall structure of a wireless charging module according to an embodiment of this application is shown; Figure 2 A schematic diagram of the front structure of the top cover according to an embodiment of this application is shown; Figure 3 A schematic diagram of the back structure of the top cover according to an embodiment of this application is shown; Figure 4A schematic diagram of the mid-frame structure of an embodiment of this application is shown; Figure 5 Show Figure 4 Side view; Figure 6 A schematic diagram of the front structure of the lower cover according to an embodiment of this application is shown.

[0025] Icons: 100 - Top cover; 101 - First ventilation hole; 102 - LED light strip; 103 - First screw hole; 107 - Magnetic ring; 108 - Charging coil; 109 - Groove; 200 - Middle frame; 201 - Second ventilation hole; 202 - Second wiring hole; 203 - Flow channel; 204 - Liquid inlet; 205 - Liquid outlet; 206 - Second screw hole; 300 - Bottom cover; 301 - Third ventilation hole; 302 - First wiring hole; 303 - Connector interface; 304 - Fan screw hole; 305 - Third screw hole; 309 - Fixing screw hole. Detailed Implementation

[0026] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0027] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0028] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0029] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0030] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0031] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0032] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0033] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0034] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0035] The first aspect of this application provides a wireless charging module, thereby solving the problem that existing in-vehicle wireless charging modules have limited heat dissipation methods and cannot meet practical needs. See below for reference. Figures 1 to 6 This application describes a wireless charging module according to some embodiments.

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the wireless charging module of this application has a thickness direction and includes an upper cover 100, a charging coil 108, a lower cover 300, a circuit board, a fan, and a connector interface 303. The upper cover 100 and the lower cover 300 are connected to form a hollow cavity; the charging coil 108 is fixed to the inner side (back) of the upper cover 100, and the circuit board is fixed to the inner side (front) of the lower cover 300. Figure 6 (Circuit board not shown) Connector interface 303 is located on the lower cover 300 and is electrically connected to the circuit board; the circuit board has a first output interface and a second output interface, the first output interface is electrically connected to the fan, and the second output interface is electrically connected to the charging coil 108; the upper cover 100 and the lower cover 300 respectively have a first ventilation hole 101 and a third ventilation hole 301 that penetrate through themselves along the thickness direction; the fan is fixed to the outer side (back side) of the lower cover 300. Figure 6 (The fan is not shown.) The fan can draw outside air into the hollow cavity through the third ventilation hole 301 and draw it out through the first ventilation hole 101.

[0037] During assembly, the connector interface 303 (power input interface) is connected to the vehicle (vehicle infotainment system). The vehicle infotainment system supplies power to the fan and charging coil 108 in sequence through the connector interface 303, the circuit board, and the first output interface (second output interface).

[0038] In practical use, the phone is placed on the top cover 100 corresponding to the charging area of ​​the charging coil 108 for charging. During charging, the fan draws cool outside air into the hollow cavity through the third ventilation hole 301, blowing it onto the circuit board and charging coil 108, carrying away the heat inside the hollow cavity, and then expelling it through the first ventilation hole 101. Compared to existing technologies, this air-cooled heat dissipation method, which uses a fan to remove heat from the hollow cavity and then expelles it through the first ventilation hole 101, can meet the practical needs of high-power, long-term wireless charging scenarios.

[0039] In the embodiments of this application, such as Figure 6As shown, the lower cover 300 has a fan screw hole 304 extending through itself along the thickness direction. The fan is fixedly connected to the lower cover 300 through the fan screw hole 304. In this embodiment, a turbine fan can be selected. Turbine fan: a miniature brushless fan (5V / 0.15A), inserted into a black plastic shell, the shell has a grille to prevent foreign objects from entering the fan. Forced convection cooling, noise ≤25dB; In the embodiments of this application, such as Figure 3 As shown, the wireless charging module of this application also includes a magnetic ring 107. The magnetic ring 107 is fixed to the inner side (back side) of the top cover 100, and the charging coil 108 is arranged around the magnetic ring 107. In this embodiment, the wireless charging coil 108 can be made of yarn-covered wire and connected to the circuit board by soldering. The magnetic ring 107 can be an N52 magnetic ring. Magnetic ring: Neodymium iron boron magnet + scratch-resistant coating, bonded to the center of the structural plate of the top cover 100, the phone is automatically aligned, and the magnetic force is ≥8N. Charging coil 108: Ferrite shielded, fixed to the top cover 100 with screws, supports Qi protocol, and high-efficiency charging with a center offset of ±5mm.

[0040] In embodiments of this application, the top cover 100 can be a PC (Polycarbonate) or ABS (Acrylonitrile-Butadiene-Styrene Copolymer). An anti-slip silicone pad is provided on the outer surface of the top cover 100 corresponding to the charging coil 108, and / or, a positioning texture is provided on the outer surface of the top cover 100 corresponding to the charging coil 108. And / or, a groove 109 is provided on the outer surface of the top cover 100 corresponding to the charging coil 108 to prevent the phone from moving.

[0041] In addition, such as Figure 2 As shown, the outer side (front) of the top cover 100 can also be equipped with an LED light strip 102 connected to the circuit board to indicate the charging status to on-site personnel. LED light strip 102: SMD surface mount LED beads + light guide strip, charging status light indicator (RGB three colors optional).

[0042] Furthermore, in the embodiments of this application, such as Figure 1 , Figure 4 and Figure 5As shown, the wireless charging module also includes a mid-frame 200, a water tank, a water pump, and a heat sink. The water tank, water pump, and heat sink are all located outside the hollow cavity. The mid-frame 200 connects the upper cover 100 and the lower cover 300, and has a second ventilation hole 201 extending through itself along its thickness direction. The first ventilation hole 101, the second ventilation hole 201, and the third ventilation hole 301 are aligned along their thickness direction. A first cavity is formed between the upper cover 100 and the mid-frame 200, and a second cavity is formed between the mid-frame 200 and the lower cover 300. The fan draws outside air into the second cavity through the third ventilation hole 301, passes through the first cavity, and exits through the first ventilation hole 101, blowing air towards the phone. Furthermore, the inner walls of the first ventilation hole 101 and the third ventilation hole 301 are connected to grilles to prevent foreign objects from entering the fan.

[0043] like Figure 4 and Figure 5 As shown, the middle frame 200 has a flow channel 203 inside, as well as an inlet 204 and an outlet 205 connected to the flow channel 203. The outlet of the water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet 204, and the outlet 205 is connected to the inlet of the water tank. The radiator is connected between the water pump and the inlet 204. The area of ​​the middle frame 200 with the flow channel 203 is in contact with the charging coil 108.

[0044] In this embodiment, the middle frame 200 can be made of aluminum alloy. Water cooling pipes can be installed in the hollow structure inside the middle frame 200 to form a flow channel 203. Coolant flows in the water cooling pipes to further dissipate heat from the charging coil 108.

[0045] The water tank stores coolant, and a water pump pumps the coolant from the tank into the water-cooled pipes via pipes. The coolant flows through the water-cooled pipes, absorbing heat generated by the charging coils, and then flows back to the water tank. Preferably, in this embodiment, the water-cooled pipes are equipped with baffles that divide the entire water-cooled pipe system into multiple branch pipes, thus expanding the water flow path.

[0046] As described above, the air-cooling plus water-cooling heat dissipation method of this application can meet the actual needs of high-power, long-term wireless charging scenarios. Moreover, the structural design of water-cooling pipes and ventilation pipes optimizes the heat dissipation path, improves heat dissipation efficiency, and also makes the entire heat dissipation structure more compact, facilitating installation and maintenance.

[0047] In addition, in the embodiments of this application, the circuit board is a PCBA board, namely a wireless charging main control board. The PCBA board includes a PCB board and an FPC board.

[0048] like Figure 6As shown, the lower cover 300 has a first wiring hole 302 extending through itself along the thickness direction. The circuit board has a first output interface at the location of the first wiring hole 302, and the fan is electrically connected to the first output interface through the first wiring hole 302. Figure 4 As shown, the middle frame 200 has a second wiring hole 202 that extends through itself along the thickness direction. The circuit board has a second output interface at the position of the second wiring hole 202. The charging coil 108 is electrically connected to the second output interface through the second wiring hole 202.

[0049] When the wireless charging module of this application is connected to a vehicle, the vehicle includes a first vehicle interface and a second vehicle interface. The first vehicle interface is electrically connected to the connector interface 303 to supply power to the fan and the charging coil 108. The second vehicle interface is electrically connected to the water pump through the vehicle controller to supply power to the water pump.

[0050] Furthermore, in embodiments of this application, the wireless charging module also includes a vehicle controller and a temperature sensor, the vehicle controller being electrically connected to the water pump. The temperature sensor is capable of detecting temperature information within the hollow cavity.

[0051] In this embodiment, the temperature sensor can be an NTC thermistor to monitor the temperature in real time and reduce power protection when the temperature exceeds the limit. Furthermore, multiple temperature sensors can be used; for example, one temperature sensor can be placed in the first chamber and another in the second chamber. During calculation, the highest temperature reading will be used.

[0052] Specifically, the control circuit of the circuit board can control the start / stop and speed of the fan based on the temperature information fed back by the temperature sensor. For example, when the temperature information obtained by the control circuit reaches the start-up temperature, it controls the fan to turn on. Then, when the temperature information obtained by the control circuit is lower, it reduces the fan speed to reduce heat dissipation power and save energy. When the temperature rises to a certain threshold, the control circuit increases the fan speed to increase the flow of cool air and enhance the heat dissipation effect.

[0053] Similarly, the vehicle's infotainment system controller can control the water pump's start / stop and speed based on temperature information from the temperature sensor. For example, when the temperature reaches the activation temperature, the controller turns on the water pump. When the temperature is lower, the controller reduces the pump speed to decrease cooling power and save energy. When the temperature rises to a certain threshold, the controller increases the pump speed to allow the coolant to circulate faster and enhance cooling performance.

[0054] In addition, the temperature sensor in this application monitors the temperature 120 times per minute. When the temperature rises to the maximum temperature threshold, the control circuit of the circuit board stops supplying power to the charging coil 108. The purpose is to have a protection mechanism to prevent the phone from overheating or cooling and causing condensation. For example, it can automatically enter a protection state and stop working when the fan is blocked by a foreign object, thus protecting the phone and the wireless charger itself.

[0055] According to a second aspect of this application, a vehicle is provided, the vehicle including the wireless charging module as described above. The vehicle also includes a first vehicle interface and a second vehicle interface, the first vehicle interface being electrically connected to a connector interface 303 to power a fan and a charging coil 108; the second vehicle interface being electrically connected to a water pump via a vehicle controller to power the water pump.

[0056] Additionally, in the embodiments of this application, such as Figures 1 to 6 As shown, the upper cover 100 has first screw holes 103 at each of its four corners, the middle frame 200 has second screw holes 206 at each of its four corners, and the lower cover 300 has third screw holes 305 at each of its four corners. The upper cover 100, middle frame 200, and lower cover 300 are connected by screws, and the lower cover 300 is provided with a mounting part. The mounting part includes a protruding outer edge, which has fixing screw holes 309. The lower cover 300 is installed inside the vehicle through the mounting part. In addition, the lower cover 300, water pump, and water tank of this application can all be installed inside the vehicle as needed.

[0057] In summary, the wireless charging module of this application can automatically start charging as soon as it detects the placement of a mobile phone, making the charging process more convenient. It does not require a traditional wired connection, thus avoiding the constraints of cables and the potential risk of damage.

[0058] The air-cooling and water-cooling heat dissipation method proposed in this application can meet the actual needs of high-power, long-term wireless charging scenarios. Moreover, the structural design of water-cooling pipes and ventilation pipes optimizes the heat dissipation path, improves heat dissipation efficiency, and also makes the entire heat dissipation structure more compact, facilitating installation and maintenance.

[0059] This application's air-cooling and water-cooling heat dissipation method effectively solves the problem of phone overheating and performance degradation caused by heat accumulation during charging. Especially during prolonged phone use or high-load tasks, it effectively reduces the phone's surface temperature, protecting it from overheating damage. It ensures the device's temperature remains within a normal range during wireless charging, thereby improving charging efficiency and device performance.

[0060] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A wireless charging module, characterized in that, The wireless charging module has a thickness direction; the wireless charging module includes an upper cover, a charging coil, a lower cover, a circuit board, a fan, and a connector interface; the upper cover and the lower cover are connected to form a hollow cavity; The charging coil is fixed to the inner side of the upper cover; The circuit board is fixed to the inner side of the lower cover, and the connector interface is disposed on the lower cover and electrically connected to the circuit board; the circuit board is provided with a first output interface and a second output interface, the first output interface being electrically connected to the fan, and the second output interface being electrically connected to the charging coil; The upper cover and the lower cover are respectively provided with a first ventilation hole and a third ventilation hole that penetrate through themselves along the thickness direction; The fan is fixed to the outer side of the lower cover. The fan can draw outside air into the hollow cavity through the third ventilation hole and draw it out through the first ventilation hole.

2. The wireless charging module according to claim 1, characterized in that, The lower cover has a first wiring hole that extends through itself along the thickness direction, and the fan is electrically connected to the first output interface through the first wiring hole; The lower cover has a fan screw hole that extends through itself along the thickness direction, and the fan is fixedly connected to the lower cover through the fan screw hole.

3. The wireless charging module according to claim 1, characterized in that, The first ventilation hole and the third ventilation hole are aligned in the thickness direction; The inner walls of the first ventilation hole and the third ventilation hole are connected with grilles.

4. The wireless charging module according to claim 1, characterized in that, The wireless charging module also includes a magnetic ring; The magnetic ring is fixed to the inner side of the upper cover, and the charging coil is arranged around the magnetic ring.

5. The wireless charging module according to claim 1, characterized in that, The top cover is made of PC or ABS. A silicone pad is provided on the outer side of the top cover corresponding to the area of ​​the charging coil, and / or a positioning texture is provided on the outer side of the top cover corresponding to the area of ​​the charging coil.

6. The wireless charging module according to any one of claims 1-5, characterized in that, The wireless charging module also includes a mid-frame, a water tank, a water pump, and a radiator; the water tank, the water pump, and the radiator are all located outside the hollow cavity; The middle frame is connected between the upper cover and the lower cover, and the middle frame has a second ventilation hole that extends through itself along the thickness direction; the first ventilation hole, the second ventilation hole and the third ventilation hole are aligned in the thickness direction; A first chamber is formed between the upper cover and the middle frame, and a second chamber is formed between the middle frame and the lower cover; the fan can draw outside air into the second chamber through the third ventilation hole, and then draw it out through the first ventilation hole after passing through the first chamber; The middle frame has a flow channel inside and an inlet and an outlet connected to the flow channel. The outlet of the water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet, the outlet of the water pump is connected to the inlet, and the outlet of the water tank is connected to the inlet of the water tank. The radiator is connected between the water pump and the inlet. The area of ​​the middle frame where the flow channel is provided is in contact with the charging coil.

7. The wireless charging module according to claim 6, characterized in that, The middle frame has a second wiring hole that extends through itself along the thickness direction; The charging coil is electrically connected to the second output interface through the second wiring hole.

8. The wireless charging module according to claim 6, characterized in that, The wireless charging module also includes a vehicle controller and a temperature sensor, and the vehicle controller is electrically connected to the water pump. The temperature sensor can detect the temperature information inside the hollow cavity; The control circuit of the circuit board can control the start / stop and speed of the fan based on the temperature information fed back by the temperature sensor. The vehicle controller can control the start / stop and speed of the water pump based on the temperature information fed back by the temperature sensor.

9. A vehicle, characterized in that, Includes the wireless charging module as described in any one of claims 6-8; The vehicle also includes a first vehicle interface and a second vehicle interface, wherein the first vehicle interface is electrically connected to the connector interface to supply power to the fan and the charging coil. The second vehicle interface is electrically connected to the water pump through the vehicle controller to supply power to the water pump.

10. The vehicle according to claim 9, characterized in that, The upper cover, the middle frame, and the lower cover are connected by screws, and the lower cover is provided with a mounting part; The lower cover is installed inside the vehicle via the mounting portion.

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