Magnetic attraction vehicle-mounted wireless charger

Abstract

The utility model relates to a magnetic attraction vehicle-mounted wireless charger which comprises a panel, an upper cover located below the panel and a base connected with the upper cover to form a containing cavity, the base is provided with a ventilation hole, and a cooling fan module is installed in the ventilation hole; a circuit board is arranged in the containing cavity, and a first air channel is formed between the circuit board and the base; the base is provided with a first air inlet, and the first air inlet is communicated with the first air duct; the side wall of the upper cover is provided with a second air duct, and the second air duct is located above the cooling fan module; the panel is provided with a supporting table, a second air inlet is formed in the side face of the supporting table, and the second air inlet is communicated with the second air channel. The problem that a mobile phone and the wireless magnetic attraction charging module are heated in the charging process of the magnetic attraction vehicle-mounted wireless charger is solved, and the stability of the charging efficiency is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of wireless chargers, and in particular to a magnetic vehicle-mounted wireless charger. Background Art

[0002] With the development of smart phones, most mobile phones have wireless charging functions. As an application scenario adapted to mobile phone wireless charging, magnetic car wireless chargers have developed rapidly due to their convenience and safety. However, the heat generated during wireless charging will lead to a series of problems such as reduced charging efficiency and poor device stability. Therefore, how to reduce the heat generated during charging is an urgent problem to be solved. In the prior art, a heat dissipation module is often added under the wireless magnetic charging module to dissipate heat, but the problem of heat generation during mobile phone charging cannot be solved well. In the prior art, an air vent is opened on the front of the charging panel, and the heat dissipation module is used to ventilate and dissipate heat for the mobile phone. However, when the mobile phone is placed on the panel for charging, the air vent will be covered, resulting in reduced air circulation and poor heat dissipation effect of the mobile phone. Utility Model Content

[0003] In response to the above-mentioned problems, the purpose of this application is to provide a magnetic car-mounted wireless charger to solve the problem of heating of mobile phones and wireless magnetic charging modules during charging by the magnetic car-mounted wireless charger, and to ensure the stability of charging efficiency.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A magnetic vehicle-mounted wireless charger comprises a panel, an upper cover located below the panel, and a base connected to the upper cover to form a cavity, the base being provided with ventilation holes, and a cooling fan module being installed in the ventilation holes; a circuit board is provided in the cavity, and a first air duct is formed between the circuit board and the base; the base is provided with a first air inlet, and the first air inlet is connected to the first air duct; a second air duct is provided on a side wall of the upper cover, and the second air duct is located above the cooling fan module; the panel is provided with a support platform, and a second air inlet is provided on a side surface of the support platform, and the second air inlet is connected to the second air duct.

[0006] Two air ducts are designed in the internal cavity of the charger. The first air duct is connected to the circuit board and the cavity where it is located, and the second air duct is connected to the charging device placed on the panel. When the charging device is charging, the cooling fan module is started to provide a wind source, and the flowing air passes through the first and second air ducts to take away the heat generated inside the wireless charger and the charging device. A support table is provided on the panel to assist in supporting the charging device. At the same time, a second air inlet is opened on the side of the support table. When the charging device is placed on the panel for charging, the second air inlet is located below the charging device, and the flowing air source draws the heat generated by the charging device from the second air inlet. The second air inlet is set on the side of the support table, instead of being directly set on the front of the panel, avoiding the phenomenon that the charging device is placed on the panel to cover the air duct, thereby increasing air circulation and improving the heat dissipation effect of the charging device.

[0007] Furthermore, it also includes a heat dissipation bracket arranged in the cavity, the heat dissipation bracket is located above the circuit board, a plurality of heat dissipation fins are arranged at the bottom of the heat dissipation bracket, the circuit board is provided with fin holes, and the heat dissipation fins extend into the first air duct through the fin holes.

[0008] The heat dissipation bracket not only plays a supporting role, but also is used for heat conduction. The heat dissipation fins improve the efficiency of heat conduction. The heat dissipation fins exchange heat with the air in the first air duct, disperse the heat into the air, and take the heat away through the flowing air, thereby reducing the temperature inside the wireless charger during charging and improving the charging efficiency and stability.

[0009] Furthermore, a partition is provided between the second air duct and the heat dissipation bracket, and the partition separates the second air duct from the heat dissipation bracket and the circuit board.

[0010] The second air duct is separated from the heat dissipation bracket and the circuit board by a partition, and the second air inlet of the panel is not connected to the circuit board inside the cavity. If water, debris or other sundries fall into the second air duct, they will not fall on the circuit board, thereby avoiding a short circuit of the circuit board.

[0011] Furthermore, it also includes a wireless magnetic charging module located on the heat dissipation bracket, the wireless magnetic charging module includes a coil, a magnetic sheet and a magnetic ring, the magnetic sheet is provided with a coil groove, the coil is installed in the coil groove, the upper surface of the heat dissipation bracket is provided with a raised magnetic groove, the magnetic sheet is installed in the magnetic groove, a magnetic ring groove is formed between the edge of the magnetic groove and the edge of the magnetic sheet, and the magnetic ring is installed in the magnetic ring groove.

[0012] The coil is controlled by the circuit board to perform magneto-electric conversion to achieve the function of wireless charging. The magnetic sheet shields the magnetic field generated by the energized coil, reduces the magnetic field loss generated by the coil, and transmits the magnetic field to the charging device as much as possible. The magnetic ring provides a magnetic suction function to fix the charging device on the panel to prevent movement from affecting the charging efficiency. The wireless magnetic charging module is installed and fixed in the magnetic slot of the heat dissipation bracket. The heat generated by the wireless magnetic charging module during the charging process is conducted out through the heat dissipation bracket, thereby reducing the charging temperature and ensuring the stability of the charging efficiency.

[0013] Furthermore, the upper cover is provided with a boss, and the magnetic groove is located in the boss.

[0014] The wireless magnetic charging module is installed in the magnetic groove of the heat dissipation bracket and placed inside the boss of the upper cover to form a closed structure with the boss to protect the internal wireless magnetic charging module from damage.

[0015] Furthermore, a heat conducting sheet is provided on the top of the boss, and the magnetic groove abuts against the heat conducting sheet.

[0016] A heat conductive sheet is provided on the top of the boss, the front side of which contacts the charging device, and the back side contacts the heat dissipation bracket. The heat generated by the charging device is conducted to the heat dissipation bracket through the heat conductive sheet, and then part of the heat is conducted away, thereby reducing the temperature of the charging device and ensuring the stability of the charging efficiency.

[0017] Furthermore, the panel is provided with a hollow, the boss passes through the hollow, and the second air inlet is opposite to the boss.

[0018] The boss of the upper cover passes through the hollow panel, the lower surface of the panel fits tightly against the upper cover, and the second air inlet on the side of the support platform is opposite to the boss. After the charging device is placed on the boss, the second air inlet is located below the charging device, and the flowing wind source draws the heat generated by the charging device away from the second air inlet.

[0019] Furthermore, the support platform is arranged at a position adjacent to the hollowing, and the upper surface of the support platform is flush with the top of the boss.

[0020] The support platform on the panel is flush with the upper surface of the boss of the upper cover, which assists in supporting the charging device and ensures the stability of the charging device.

[0021] Furthermore, an air outlet is provided at the bottom of the heat dissipation fan module.

[0022] An air outlet is provided at the bottom of the heat dissipation module, and the heat dissipation fan discharges the hot air drawn in from the first air inlet and the second air inlet after heat exchange from the air outlet, thereby strengthening the air flow and improving the heat dissipation efficiency.

[0023] Compared with the prior art, the beneficial effects of this application are:

[0024] Two air ducts are designed in the internal cavity of the charger. The first air duct is connected to the circuit board and the cavity where it is located, and the second air duct is connected to the charging device placed on the panel. When the charging device is charging, the cooling fan module is started to provide a wind source, and the flowing air passes through the first and second air ducts to take away the heat generated inside the wireless charger and the charging device. A support table is provided on the panel to assist in supporting the charging device. At the same time, a second air inlet is opened on the side of the support table. When the charging device is placed on the panel for charging, the second air inlet is located below the charging device, and the flowing air source draws the heat generated by the charging device from the second air inlet. The second air inlet is set on the side of the support table, instead of being directly set on the front of the panel, avoiding the phenomenon that the charging device is placed on the panel to cover the air duct, thereby increasing air circulation and improving the heat dissipation effect of the charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an exploded view of the structure of a magnetic car wireless charger according to an embodiment of the present application.

[0026] Figure 2 This is a schematic diagram of a heat dissipation bracket and a circuit board assembly according to an embodiment of the present application.

[0027] Figure 3 This is an exploded view of a wireless magnetic charging module according to an embodiment of the present application.

[0028] Figure 4 This is a structural diagram of a top cover according to an embodiment of the present application.

[0029] Figure 5 This is a base structure diagram of an embodiment of the present application.

[0030] Figure 6 This is a top view of a magnetic car wireless charger according to an embodiment of the present application.

[0031] Figure 7 This is an embodiment of the present application Figure 6 sectional view of .

[0032] Illustration description: 1-panel, 2-upper cover, 3-heat dissipation bracket, 4-circuit board, 5-base, 6-cooling fan module, 7-wireless magnetic charging module, 8-first air duct, 11-support platform, 12-hollowing, 21-second air duct, 22-partition, 23-boss, 31-heat dissipation fin, 32-magnetic groove, 41-fin hole, 51-ventilation hole, 52-first air inlet, 61-air outlet, 71-coil, 72-magnetic sheet, 73-magnetic ring, 111-second air inlet, 231-thermal conductive sheet, 721-coil groove. DETAILED DESCRIPTION

[0033] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The drawings provide preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein.

[0034] like Figures 1 to 6 As shown, in a preferred embodiment, the present application provides a magnetic vehicle-mounted wireless charger, including a panel 1, an upper cover 2 located below the panel 1, and a base 5 connected to the upper cover 2 to form a cavity, the base 5 is provided with a ventilation hole 51, a cooling fan module 6 is installed at the bottom of the ventilation hole 51, and an air outlet 61 is provided at the bottom of the cooling fan module 6; a circuit board 4 is provided in the cavity, and a first air duct 8 is formed between the circuit board 4 and the base 5; the base 5 is provided with a first air inlet 52, and the first air inlet 52 is connected to the first air duct 8; a second air duct 21 is provided on the side wall of the upper cover 2, and the second air duct 21 is located above the cooling fan module 6; the panel 1 is provided with a support platform 11, and a second air inlet 111 is provided on the side of the support platform 11, and the second air inlet 111 is connected to the second air duct 21.

[0035] Two air ducts are designed in the internal cavity of the charger. The first air duct 8 is connected to the circuit board 4 and the cavity where it is located, and the second air duct 21 is connected to the charging device placed on the panel 1. When the charging device is charging, the cooling fan module 6 is started to provide a wind source, and the flowing air passes through the first air duct 8 and the second air duct 21 to take away the heat generated by the wireless magnetic charging module 7, the circuit board 4 and the charging device. The cooling fan removes the hot air drawn in from the first air inlet 52 and the second air inlet 111 for heat exchange from the air outlet 61, strengthens the flow of air, and improves the heat dissipation efficiency. A support platform 11 is provided on the panel 1, and the support platform 11 is used to assist in supporting the charging device. At the same time, a second air inlet 111 is opened on the side of the support platform 11. When the charging device is placed on the panel 1 for charging, the second air inlet 111 is located below the charging device, and the flowing wind source draws the heat generated by the charging device from the second air inlet 111. The second air inlet 111 is arranged on the side of the support platform 11 instead of being directly arranged on the front of the panel 1, avoiding the phenomenon that the charging device is placed on the panel 1 and covering the air inlet, thereby increasing air circulation and improving the heat dissipation effect of the charging device.

[0036] like Figure 2As shown, a heat dissipation bracket 3 is provided in the cavity, the heat dissipation bracket 3 is located above the circuit board 4, a plurality of heat dissipation fins 31 are provided at the bottom of the heat dissipation bracket 3, the circuit board 4 is provided with fin holes 41, and the heat dissipation fins 31 extend into the first air duct 8 through the fin holes 41. The heat dissipation bracket 3 not only plays a supporting role, but also is used for heat conduction. The heat dissipation fins 31 improve the efficiency of heat conduction. The heat dissipation fins 31 exchange heat with the air in the first air duct 8, dissipate the heat in the air, and take the heat away through the flowing air, thereby reducing the temperature inside the wireless charger during charging and improving the efficiency and stability of charging.

[0037] like Figure 7 As shown, a partition 22 is provided between the second air duct 21 and the heat dissipation bracket 3, and the partition 22 separates the second air duct 21 from the heat dissipation bracket 3 and the circuit board 4. The partition is used to separate the second air duct 21 from the heat dissipation bracket 3 and the circuit board 4, and the second air inlet 111 of the panel 1 is not connected to the circuit board 4 inside the cavity. If water, debris and other sundries fall into the second air duct 21, they will not fall on the circuit board 4, thereby avoiding a short circuit of the circuit board 4.

[0038] like Figure 3 As shown, a wireless magnetic charging module 7 is installed on the upper surface of the heat dissipation bracket 3. The wireless magnetic charging module 7 includes a coil 71, a magnetic sheet 72 and a magnetic ring 73. The magnetic sheet 72 is provided with a coil groove 721, and the coil 71 is installed in the coil groove 721. A raised magnetic groove 32 is provided on the upper surface of the heat dissipation bracket 3, and the magnetic sheet 72 is installed in the magnetic groove 32. A magnetic ring groove is formed between the raised edge of the magnetic groove 32 and the edge of the coil groove 721 of the magnetic sheet 72, and the magnetic ring 73 is installed in the magnetic ring groove. The coil 71 is controlled by the circuit board 4 to perform magnetoelectric conversion to realize the function of wireless charging. The magnetic sheet 72 shields the magnetic field generated by the energized coil 71, reduces the magnetic field loss generated by the coil 71, and transmits the magnetic field to the charging device as much as possible. The magnetic ring 73 provides a magnetic attraction function, and magnetically fixes the charging device on the panel 1 to avoid movement that affects the charging efficiency. The wireless magnetic charging module 7 is installed and fixed in the magnetic groove 32 of the heat dissipation bracket 3. The heat generated by the wireless magnetic charging module 7 during the charging process is conducted out through the heat dissipation bracket 3, thereby reducing the charging temperature and ensuring the stability of the charging efficiency.

[0039] like Figure 4As shown, the upper cover 2 is provided with a boss 23, and a heat conductive sheet 231 is provided on the top of the boss 23. The raised magnetic groove 32 of the heat dissipation bracket 3 is located in the boss 23, and the top of the magnetic groove 32 abuts against the back of the heat conductive sheet 231. The wireless magnetic charging module 7 is installed in the magnetic groove 32, which is placed inside the boss 23 of the upper cover 2, and forms a closed structure with the boss 23 to protect the internal wireless magnetic charging module 7 from damage. The front of the heat conductive sheet 231 is in contact with the charging device, and the heat generated by the charging device is conducted to the heat dissipation bracket 3 through the heat conductive sheet 231, thereby conducting and dissipating part of the heat, reducing the temperature of the charging device, and ensuring the stability of the charging efficiency.

[0040] like Figure 1 and Figure 7 The panel 1 is provided with a hollow 12, and the boss 23 of the upper cover 2 is installed through the hollow 12. The back of the panel 1 is tightly fitted with the upper cover 2. The second air inlet 111 on the side of the support platform 11 of the panel 1 is opposite to the boss 23. After the charging device is placed on the boss 23, the second air inlet 111 is located below the charging device, and the flowing wind source draws the heat generated by the charging device from the second air inlet 111. The support platform 11 is set adjacent to the hollow 12, and the upper surface of the support platform 11 is flush with the top of the boss 23, which assists in supporting the charging device and ensures the stability of the charging device.

[0041] In the description of the present application, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A magnetic vehicle-mounted wireless charger, comprising a panel (1), an upper cover (2) located below the panel (1), and a base (5) connected to the upper cover (2) to form a cavity, characterized in that: The base (5) is provided with a ventilation hole (51), and a cooling fan module (6) is installed in the ventilation hole (51); a circuit board (4) is provided in the cavity, and a first air duct (8) is formed between the circuit board (4) and the base (5); the base (5) is provided with a first air inlet (52), and the first air inlet (52) is connected to the first air duct (8); the side wall of the upper cover (2) is provided with a second air duct (21), and the second air duct (21) is located above the cooling fan module (6); the panel (1) is provided with a support platform (11), and a second air inlet (111) is provided on the side of the support platform (11), and the second air inlet (111) is connected to the second air duct (21).

2. The magnetic vehicle-mounted wireless charger according to claim 1, characterized in that: It also includes a heat dissipation bracket (3) disposed in the cavity, the heat dissipation bracket (3) being located above the circuit board (4), a plurality of heat dissipation fins (31) being provided at the bottom of the heat dissipation bracket (3), the circuit board being provided with fin holes (41), and the heat dissipation fins (31) passing through the fin holes (41) and extending into the first air duct (8).

3. The magnetic vehicle-mounted wireless charger according to claim 2, characterized in that: A partition plate (22) is provided between the second air duct (21) and the heat dissipation bracket (3), and the partition plate (22) separates the second air duct (21) from the heat dissipation bracket (3) and the circuit board (4).

4. The magnetic vehicle-mounted wireless charger according to claim 2, characterized in that: The invention also comprises a wireless magnetic charging module (7) located on the heat dissipation support (3), the wireless magnetic charging module (7) comprising a coil (71), a magnetic sheet (72) and a magnetic ring (73), the magnetic sheet (72) being provided with a coil groove (721), the coil (71) being installed in the coil groove (721), the upper surface of the heat dissipation support (3) being provided with a raised magnetic groove (32), the magnetic sheet (72) being installed in the magnetic groove (32), a magnetic ring groove being formed between the edge of the magnetic groove (32) and the edge of the magnetic sheet (72), and the magnetic ring (73) being installed in the magnetic ring groove.

5. The magnetic vehicle-mounted wireless charger according to claim 4, characterized in that: The upper cover (2) is provided with a boss (23), and the magnetic groove (32) is located inside the boss (23).

6. The magnetic vehicle-mounted wireless charger according to claim 5, characterized in that: A heat conducting sheet (231) is provided on the top of the boss (23), and the magnetic groove (32) abuts against the heat conducting sheet (231).

7. The magnetic vehicle-mounted wireless charger according to claim 5, characterized in that: The panel (1) is provided with a hollow (12), the boss (23) passes through the hollow (12), and the second air inlet (111) is opposite to the boss (23).

8. The magnetic vehicle-mounted wireless charger according to claim 7, characterized in that: The support platform (11) is arranged at a position adjacent to the hollow (12), and the upper surface of the support platform (11) is flush with the top of the boss (23).

9. The magnetic vehicle-mounted wireless charger according to claim 1, characterized in that: An air outlet (61) is provided at the bottom of the heat dissipation fan module (6).

Images