Heat dissipation assembly, wireless charging device and vehicle

Abstract

The invention discloses a heat dissipation assembly, a wireless charging device and a vehicle. The heat dissipation assembly comprises a shell, a cover plate and a heat dissipation fan. The cover plate is embedded in the shell and forms a containing cavity, and the containing cavity can be used for containing the wireless charging module. The shell is provided with an air inlet and an air outlet. The air outlet and the air inlet are located in the two sides of the cover plate and communicate through an air duct. And the cooling fan is arranged between the air inlet and the air duct. The air outlet is bent towards the cover plate, so that an included angle is formed between the air outlet direction and the cover plate. During heat dissipation, the heat dissipation fan sucks air into the air duct from the air inlet and then blows the air out of the air outlet. At the moment, pressure difference occurs between the interior and the exterior of the air outlet, so that air outside the air outlet flows along the curved surface under the action of the pressure difference, and the air and airflow blown out of the air outlet converge and jointly flow to the cover plate, so that the airflow blowing-out amount of the heat dissipation assembly is increased. An included angle is formed between the air outlet direction and the cover plate, so that a user cannot see the air outlet. When foreign matters fall on the cover plate, the bent air outlet can prevent the foreign matters from falling into the air duct.

Description

Heat dissipation component, wireless charging device and vehicle Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a heat dissipation component, a wireless charging device, and a vehicle. Background Art

[0002] In automotive applications, mobile devices such as mobile phones and tablets can be charged and stored using the in-car wireless charging device. When charging, the mobile device can be placed directly on the charging platform for charging. Compared to wired chargers, this eliminates the need for messy charging cables, keeping the car clean and tidy.

[0003] Mobile devices typically generate heat while charging. To prevent excessive heat generation during charging, which could lead to interruptions, in-vehicle wireless charging devices are equipped with cooling fans. The airflow generated by these fans is blown out through vents located on the charging platform, directly dissipating heat from the mobile device. However, these vents can leak, affecting the aesthetics and making it easy for foreign objects to enter the air duct, impacting the passenger experience.

[0004] Summary of the Invention

[0005] The present application provides a heat dissipation component, a wireless charging device, and a vehicle to increase the overall airflow output of the heat dissipation component and prevent foreign matter from falling into the air duct.

[0006] In a first aspect, the present application provides a heat dissipation assembly. The heat dissipation assembly may specifically include a shell, a cover plate and a heat dissipation fan. The cover plate is embedded in the shell and forms a receiving cavity with the shell, and the receiving cavity can be used to accommodate a wireless charging module. The shell is provided with an air inlet and an air outlet, wherein the air outlet is located on the side of the cover plate away from the receiving cavity, and the air inlet is located on the side of the cover plate close to the receiving cavity. The air inlet and the air outlet are connected through an air duct. The heat dissipation fan is arranged between the air inlet and the air duct. The air outlet is bent toward the cover plate, and the air outlet direction of the air outlet is set at an angle to the cover plate.

[0007] The above-mentioned heat dissipation assembly can be used to dissipate heat from an object. During specific use, the side of the cover plate facing away from the accommodating chamber can be used as a support surface, and the object can be placed on the support surface. After the heat dissipation fan is started, the heat dissipation fan draws air from the air inlet into the air duct, and then passes through the air duct and blows it out from the air outlet. According to the Bernoulli principle and the Coanda effect, a pressure difference will appear between the inside and outside of the air outlet, causing the air outside the air outlet to flow along the curved surface of the air outlet under the action of the pressure difference, and merge with the air flow blown out from the air outlet, and flow together to the support surface of the cover plate, thereby increasing the overall airflow output of the heat dissipation assembly. Among them, the air outlet direction is set at an angle to the cover plate, so that the user cannot see the air outlet on the side of the cover plate facing away from the accommodating chamber, and when foreign objects fall on the cover plate, the curved air outlet can prevent the foreign objects from falling into the air duct.

[0008] When configuring the above-mentioned housing, the housing may include a bottom shell, sidewalls, and an air outlet guide plate. The sidewalls are connected to the periphery of the cover plate, and the air outlet guide plate is disposed at the air outlet. The air outlet guide plate has a bent portion that curves toward the side of the cover plate facing away from the accommodating cavity, thereby arranging the air outlet direction at an angle to the cover plate.

[0009] The above-mentioned bending portion may have an arc-shaped surface, thereby reducing the friction between the airflow outside the air outlet and the surface of the bending portion, thereby reducing flow resistance and allowing the airflow to flow more smoothly along the surface of the bending portion toward the cover plate.

[0010] In some technical solutions of the present application, the air outlet guide plate and the side wall can be integrally formed to enhance the structural strength of the housing. Alternatively, in other technical solutions, the air outlet guide plate can be detachably connected to the side wall, so that the air outlet guide plate can be removed from the side wall to facilitate cleaning of the interior of the air duct.

[0011] In the present application, the angle formed by the air outlet direction and the cover plate can be greater than 0 degrees and less than or equal to 90 degrees. For example, the angle can be 2 degrees, 13 degrees, 27 degrees, 40 degrees, 61 degrees, 73 degrees, 81 degrees, 89 degrees or 90 degrees, etc., and no specific restrictions are given here.

[0012] In some technical solutions, a baffle may be provided between the air outlet and the air duct to prevent foreign matter from falling into the air duct. When the air outlet is specifically provided, the cross section of the air outlet perpendicular to the air outlet direction may be straight, U-shaped, or annular, without specific limitation here.

[0013] The air duct may be arranged inside the housing, or outside the housing, which is not specifically limited here.

[0014] In a second aspect, the present application further provides a wireless charging device. The wireless charging device includes a housing, a wireless charging module, and the heat dissipation assembly of the first aspect. The heat dissipation assembly is disposed in the housing, and the wireless charging module is located within the housing and adjacent to the cover.

[0015] When the wireless charging device is in operation, the device to be charged can be placed on the support surface of the cover. While the heat dissipation assembly is dissipating heat, the cooling fan is started. The cooling fan draws air from the air inlet into the air duct, which then passes through the air duct and is blown out from the air outlet. According to the Bernoulli principle and the Coanda effect, a pressure difference occurs between the inside and outside of the air outlet. This causes the air outside the air outlet to flow along the curved surface of the air outlet under the action of the pressure difference, and merges with the air flow from the air outlet, flowing together toward the support surface of the cover, thereby increasing the overall airflow output of the heat dissipation assembly. Furthermore, the air outlet direction is set at an angle to the cover, so that the user cannot see the air outlet on the side of the cover facing away from the accommodating cavity. Furthermore, when foreign objects fall onto the cover, the curved air outlet prevents them from falling into the air duct.

[0016] In a third aspect, the present application also provides a vehicle. The vehicle includes a cabin and the wireless charging device according to the second aspect, wherein the wireless charging device is disposed within the cabin. When charging using the vehicle's wireless charging device, the device to be charged is placed on the support surface of the cover plate. While the heat dissipation assembly is dissipating heat, a cooling fan is activated. The cooling fan draws air from the air inlet into the air duct, which then flows through the duct and out the air outlet. According to the Bernoulli principle and the Coanda effect, a pressure difference occurs between the inside and outside of the air outlet. This pressure difference causes the air outside the air outlet to flow along the curved surface of the air outlet and merge with the airflow from the air outlet, flowing toward the support surface of the cover plate, thereby increasing the overall airflow output of the heat dissipation assembly. Furthermore, the air outlet is arranged at an angle to the cover plate, making the air outlet invisible to the user on the side of the cover plate facing away from the receiving cavity. Furthermore, if foreign objects fall onto the cover plate, the curved air outlet prevents them from entering the air duct.

[0017] The above-mentioned cabin is provided with an armrest box, and the wireless charging device can be set in the armrest box, so that the cover can be set in a horizontal position, which is convenient for the user to place the device to be charged directly on the cover, and the user cannot see the air outlet when in a sitting position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic structural diagram of a heat dissipation assembly according to an embodiment of the present application;

[0019] FIG2 is a cross-sectional view of the heat dissipation assembly in FIG1 along the AA direction;

[0020] FIG3 is a schematic diagram of the Bernoulli principle in this application;

[0021] FIG4 is a schematic diagram of the Coanda effect in this application;

[0022] FIG5 is another schematic structural diagram of a heat dissipation assembly in an embodiment of the present application;

[0023] FIG6 is another schematic structural diagram of a heat dissipation assembly in an embodiment of the present application;

[0024] FIG7 is a schematic diagram of a structure of an air outlet in an embodiment of the present application;

[0025] FIG8 is a schematic diagram of another structure of the air outlet in an embodiment of the present application;

[0026] FIG9 is a schematic diagram of another structure of the air outlet in an embodiment of the present application;

[0027] FIG10 is a schematic diagram of another structure of the air outlet in an embodiment of the present application;

[0028] FIG11 is a schematic diagram of another structure of the air outlet in an embodiment of the present application;

[0029] FIG12 is a structural diagram of an armrest box in an embodiment of the present application.

[0030] Reference numerals:

[0031] 10- heat dissipation component;

[0032] 11- housing;

[0033] 12-cover plate;

[0034] 13- Cooling fan;

[0035] 14-accommodation cavity;

[0036] 15-air inlet;

[0037] 16-air outlet;

[0038] 17- air duct;

[0039] 18- baffle;

[0040] 20-wireless charging module;

[0041] 30-armrest box;

[0042] 111- bottom shell;

[0043] 112-side wall;

[0044] 113-air outlet guide plate;

[0045] 114-bending portion. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0047] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in another embodiment," "in some other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0048] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the", and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise.

[0049] The present application provides a heat dissipation component, a wireless charging device, and a vehicle to increase the overall airflow output of the heat dissipation component and prevent foreign matter from falling into the air duct.

[0050] Figure 1 is a structural schematic diagram of the heat dissipation assembly in an embodiment of the present application, and Figure 2 is a cross-sectional view of the heat dissipation assembly in Figure 1 along the AA direction. As shown in Figures 1 and 2, the heat dissipation assembly 10 includes a shell 11, a cover plate 12 and a heat dissipation fan 13. Among them, the cover plate 12 is embedded in the shell 11, and the cover plate 12 and the shell 11 can form a accommodating cavity 14. In the present application, the heat dissipation assembly 10 can be applied to a wireless charging device, or it can also be applied to the air outlet of other equipment, such as a central air conditioner, an air purifier, a radiator, etc., which will not be listed one by one here. The following is an example of the application of the heat dissipation assembly 10 to a wireless charging device.

[0051] Continuing with reference to FIG1 , the wireless charging module 20 of the wireless charging device can be disposed within the aforementioned accommodating cavity 14 . Specifically, the wireless charging module 20 can include a circuit board and a charging coil, wherein the charging coil is disposed on and electrically connected to the circuit board. When the wireless charging device is used for wireless charging, the surface of the cover plate 12 facing away from the accommodating cavity 14 can serve as a support surface for supporting the device to be charged. The device to be charged is placed on the support surface, and the wireless charging device can identify the power level of the device to be charged and control the charging coil to be energized based on the power level. Through the magnetic field coupling between the charging coil and the coil within the device to be charged, the wireless charging module 20 can transmit energy to the device to be charged. In addition, the housing 11 is provided with an air inlet 15 and an air outlet 16 , wherein the air inlet 15 is disposed on the side of the cover plate 12 close to the accommodating cavity 14, and the air outlet 16 is disposed on the side of the cover plate 12 facing away from the accommodating cavity 14. In other words, the air inlet 15 and the air outlet 16 are located on both sides of the cover plate 12. The air inlet 15 and the air outlet 16 are connected through the air duct 17, and the air duct 17 extends from the side of the cover plate 12 close to the accommodating cavity 14 to the side of the plate close to the accommodating cavity 14. In the present application, the air duct 17 can be set in the shell 11 to simplify the appearance structure of the heat dissipation component 10. Of course, according to the specific application scenario, the air duct 17 can also be set outside the shell 11, and this application does not impose specific restrictions. The cooling fan 13 is set between the air inlet 15 and the air duct 17 to draw air from the air inlet 15 into the air duct 17. The air outlet 16 can be bent toward the cover plate 12, and the air outlet direction is set at an angle to the cover plate 12.

[0052] When the heat dissipation assembly 10 is dissipating heat from the device being charged, the cooling fan 13 is activated. Specifically, the cooling fan 13 draws air from the air inlet 15 into the air duct 17, which then blows it out through the air outlet 16. According to the Bernoulli principle and the Coanda effect, because the air outlet 16 curves toward the cover plate 12, a pressure difference occurs between the inside and outside of the air outlet 16. Due to this pressure difference, the air outside the air outlet 16 flows along the curved surface of the air outlet 16 and merges with the airflow from the air outlet 16, flowing toward the support surface of the cover plate 12. This increases the overall airflow output of the heat dissipation assembly 10 and improves the heat dissipation effect of the heat dissipation assembly 10. Furthermore, the increased airflow output from the heat dissipation assembly 10 reduces the motor speed of the cooling fan 13, thereby reducing the operating noise of the cooling fan 13 and achieving silent operation. The air outlet is directed toward the support surface of the cover plate 12, making the air outlet 16 invisible to the user on the side of the cover plate 12 facing away from the accommodating cavity 14 and preventing foreign matter and dust from falling into the air.

[0053] It should be noted that, according to the Bernoulli principle, the greater the flow velocity of the fluid, the smaller the static pressure of the fluid. Figure 3 is a schematic diagram of the Bernoulli principle in this application. As shown in Figure 3, when the air flow is blown out from the air outlet 16, the pressure at the air outlet 16 decreases, and a pressure difference is formed with the external pressure. Figure 4 is a schematic diagram of the Coanda effect in this application. As shown in Figure 4, it can be seen from the Coanda effect that the fluid deviates from the original flow direction and tends to flow along the protruding surface of the object. When there is surface friction between the fluid and the surface of the object it flows through, as long as the curvature is not large, the fluid will flow along the surface of the object. Therefore, after the air outside the air outlet 16 flows under the action of the pressure difference, it can flow along the curved surface of the air outlet 16, thereby merging with the air flow blown out of the air outlet 16.

[0054] FIG5 is another schematic structural diagram of a heat dissipation assembly in an embodiment of the present application. As shown in FIG5 , in some embodiments, the housing 11 may include a bottom shell 111, a side wall 112, and an air outlet guide plate 113. Specifically, the side wall 112 is connected to the peripheral side of the bottom wall 111 and extends toward one side of the bottom wall 111. The side wall 112 is connected to the peripheral side of the cover plate 12, so that the cover plate 12 is embedded in the side wall 112. In this embodiment, the air inlet 15 can be provided on the bottom shell 111, or it can be provided on the side wall 112, and there is no specific limitation here. The air outlet 16 can be provided at one end of the side wall 112 close to the cover plate 12, and the air outlet guide plate 113 is provided at the air outlet 16. The air outlet guide plate 113 has a bent portion 114, which bends toward the side surface of the cover plate 12 facing away from the accommodating cavity 14, so that the air outside the air outlet 16 flows along the surface of the bent portion 114.

[0055] In the above embodiment, the bending portion 114 may have a bent surface; or, it may have a smooth arc surface, so that the airflow outside the air outlet 16 flows more smoothly along the surface of the bending portion 114, reducing flow obstruction.

[0056] In the present application, the air outlet guide plate 113 can be integrally formed with the side wall 112, thereby increasing the structural strength of the housing 11. Alternatively, in other embodiments, the air outlet guide plate 113 can be detachably connected to the side wall 112, for example, by means of a snap connection, a threaded connection, or a riveted connection. In this way, the air outlet guide plate 113 can be removed from the side wall 112, facilitating cleaning of the interior of the air duct 17.

[0057] The aforementioned air outlet direction can form an angle with the cover plate 12. In the present application, this angle is greater than 0 degrees and less than or equal to 90 degrees. As shown in Figure 1, in one specific embodiment, the angle is equal to 90 degrees, so that the opening of the air outlet 16 can be positioned toward the cover plate 12. When used in a vehicle wireless charging device, the opening is invisible to the passenger while in the seat, thus achieving a concealed effect.

[0058] Figure 6 is a schematic diagram of another structure of the heat dissipation assembly in an embodiment of the present application. As shown in Figure 6, a baffle 18 can be provided between the air outlet 16 and the air duct 17. The baffle 18 can be arranged perpendicular to the direction of air flow. In this way, if foreign matter falls into the air outlet 16, the baffle 18 can prevent the foreign matter from falling into the air duct 17.

[0059] The specific shape of the above-mentioned air outlet 16 is not limited. Figure 7 is a structural schematic diagram of the air outlet in the embodiment of the present application. As shown in Figure 7, the cross-section of the air outlet 16 perpendicular to the air outlet direction can be a straight line shape. Of course, the number of air outlets 16 is not specifically limited. Figure 8 is another structural schematic diagram of the air outlet in the embodiment of the present application, and Figure 9 is another structural schematic diagram of the air outlet in the embodiment of the present application. As shown in Figures 8 and 9, in some embodiments, the shell 11 can be provided with two air outlets 16, and these two air outlets 16 can be relatively arranged on both sides of the cover plate 12, or can be arranged on two adjacent sides of the cover plate 12, so as to increase the heat dissipation effect and reduce the motor operating speed of the cooling fan 13. Figure 10 is another structural schematic diagram of the air outlet in the embodiment of the present application. As shown in Figure 10, the cross-section of the air outlet 16 perpendicular to the air outlet direction can also be U-shaped. Figure 11 is another structural schematic diagram of the air outlet in the embodiment of the present application. As shown in FIG11 , the cross section of the air outlet 16 perpendicular to the air outlet direction may also be annular, which can increase the area of ​​the support surface covered by the heat dissipation airflow, improve the phenomenon of single-point air outlet and air volume concentration, and enhance user comfort.

[0060] Based on the same design concept, the present application also provides a wireless charging device. Specifically, the wireless charging device includes a housing, a wireless charging module 20, and a heat dissipation assembly 10 of any of the above embodiments. The heat dissipation assembly 10 is disposed in the housing, and the wireless charging module 20 is located in the accommodating cavity of the housing 11 and is disposed near the cover. In this embodiment, the wireless charging device can be used to charge electronic devices such as mobile phones, tablets, and smart wearable devices.

[0061] When the wireless charging device is working, the device to be charged is placed on the support surface of the cover plate 12. When the heat dissipation component 10 is dissipating heat, the heat dissipation fan 13 is started. The heat dissipation fan 13 draws air from the air inlet 15 into the air duct 17, and then blows it out from the air outlet 16 through the air duct 17. According to the Bernoulli principle and the Coanda effect, since the air outlet 16 is curved toward the cover plate 12, a pressure difference will appear between the inside and outside of the air outlet 16. Under the action of the pressure difference, the air outside the air outlet 16 will flow along the curved surface of the air outlet 16 and merge with the air flow blown out from the air outlet 16, and flow together to the device to be charged placed on the cover plate 12, thereby increasing the overall airflow blown out of the heat dissipation component 10 to avoid charging interruption due to overheating of the device to be charged. In addition, the air outlet direction is set toward the support surface of the cover plate 12, so that the user cannot see the air outlet 16 on the side of the cover plate 12 away from the accommodating cavity 14, and foreign objects are not easy to fall.

[0062] Based on the same design concept, the present application also provides a vehicle. Specifically, the vehicle includes the wireless charging device of the above embodiment, and the wireless charging device is arranged in the cabin of the vehicle. When charging using the wireless charging device of the vehicle, the device to be charged is placed on the support surface of the cover plate 12. When the heat dissipation component 10 is dissipating heat, the heat dissipation fan 13 is started. The heat dissipation fan 13 draws air from the air inlet 15 into the air duct 17, and then blows it out from the air outlet 16 through the air duct 17. According to the Bernoulli principle and the Coanda effect, since the air outlet 16 is curved toward the cover plate 12, a pressure difference will appear between the inside and outside of the air outlet 16. The air outside the air outlet 16 will flow along the curved surface of the air outlet 16 under the action of the pressure difference, and merge with the air flow blown out from the air outlet 16, and flow together to the device to be charged placed on the cover plate 12, thereby increasing the overall airflow blown out of the heat dissipation component 10 to avoid charging interruption due to overheating of the device to be charged. In addition, the air outlet direction is set toward the supporting surface of the cover plate 12, so that the user cannot see the air outlet 16 on the side of the cover plate 12 away from the accommodating cavity 14, and foreign objects are not easily dropped.

[0063] In addition to the above-mentioned vehicles, the heat dissipation assembly 10 can also be applied to wireless charging devices of ships, airplanes, trains and other transportation vehicles, and this application does not impose specific restrictions.

[0064] Figure 12 is a structural schematic diagram of the armrest box in an embodiment of the present application. As shown in Figure 12, in a specific embodiment, the cockpit is provided with an armrest box 30, the wireless charging device can be provided in the armrest box 30, and the exposed surface of the cover plate 12 of the heat dissipation assembly 10 can be used as a support surface. When charging is required, the device to be charged can be placed on the support surface. The heat dissipation assembly 10 can dissipate heat from the device to be charged at set intervals. Alternatively, the heat dissipation assembly 10 can also dissipate heat from the device to be charged according to the temperature of the device to be charged. Integrating the wireless charging device into the armrest box 30 can simplify the internal structure of the vehicle and make it easier for users to charge electronic devices using the wireless charging device.

[0065] Obviously, those skilled in the art may make various modifications and variations to this application without departing from the scope of protection of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A heat dissipation component, characterized in that: It includes a housing, a cover and a cooling fan, wherein: The cover plate is embedded in the shell and forms a receiving cavity with the shell, and the receiving cavity is used to receive the wireless charging module; The shell is provided with an air inlet and an air outlet, the air outlet is located on the side of the cover plate away from the accommodating cavity, and the air inlet is located on the side of the cover plate close to the accommodating cavity, the air inlet and the air outlet are connected through an air duct, the cooling fan is arranged between the air inlet and the air duct, the air outlet is bent toward the cover plate, and the air outlet direction of the air outlet is arranged at an angle to the cover plate.

2. The heat dissipation assembly according to claim 1, wherein: The shell includes a bottom shell, a side wall and an air outlet guide plate, the side wall is connected to the peripheral side of the cover plate, the air outlet guide plate is arranged at the air outlet, and the air outlet guide plate has a bending portion, and the bending portion is bent toward the side surface of the cover plate away from the accommodating cavity.

3. The heat dissipation assembly according to claim 2, wherein: The bent portion has an arc-shaped surface.

4. The heat dissipation assembly according to claim 2 or 3, wherein: The air outlet guide plate and the side wall are an integrally formed structure; or, the air outlet guide plate and the side wall are detachably connected.

5. The heat dissipation assembly according to any one of claims 1 to 4, wherein: The angle formed by the air outlet direction and the cover plate is greater than 0 degree and less than or equal to 90 degrees.

6. The heat dissipation assembly according to any one of claims 1 to 5, wherein: A baffle is provided between the air outlet and the air duct.

7. The heat dissipation assembly according to any one of claims 1 to 6, wherein: The cross section of the air outlet perpendicular to the air outlet direction is in a straight line shape, a U shape or a ring shape.

8. A wireless charging device, characterized in that: It comprises a shell, a wireless charging module and a heat dissipation assembly as described in any one of claims 1 to 7, wherein the heat dissipation assembly is arranged in the shell, and the wireless charging module is located in the shell and is arranged close to the cover plate.

9. A vehicle, characterized in that: It comprises a cabin and the wireless charging device as claimed in claim 8, wherein the wireless charging device is arranged in the cabin.

10. The vehicle according to claim 9, wherein: The cockpit is provided with an armrest box, and the wireless charging device is arranged in the armrest box.

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