A vehicle-mounted wireless charger

Abstract

The utility model relates to vehicle-mounted electric appliance technical field, specifically disclose a kind of vehicle-mounted wireless charger, vehicle-mounted wireless charger includes first shell, second shell and fan assembly, first shell has outer end face, outer end face is protruding with the support frame of U shape, support frame has the support surface of U shape and is spaced apart from outer end face setting, when mobile phone is supported on support surface, mobile phone, support frame and outer end face can be enclosed into heat dissipation passage, first shell is also provided with the air inlet that is communicated with heat dissipation passage, two free ends of support frame are provided with guide surface, horn-shaped opening is formed between two guide surfaces, opening is communicated with heat dissipation passage and gradually expands outward;Second shell is connected with first shell and is enclosed into the accommodating space for accommodating transmitting end coil module;Fan assembly is configured as driving airflow enters heat dissipation passage through air inlet, airflow can be fan surface diffusion after heat exchange with mobile phone through horn opening shape opening, can effectively improve the heat dissipation effect of mobile phone.

Description

Technical Field

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

[0002] Currently, an increasing number of cars on the market are equipped with in-vehicle wireless charging modules for charging mobile phones. However, the higher the power of the wireless charger, the more heat it generates, leading to higher charger temperatures. Therefore, heat dissipation has become a major issue in increasing the power of wireless chargers.

[0003] The prior art provides a car wireless charger. The first housing of the wireless charger has a U-shaped outer periphery, and a support surface and a charging surface located on the inner side of the outer periphery. The two free ends of the outer periphery are flush with one end of the length direction of the first housing. The support surface is flush with the upper surface of the outer periphery and is used to support the mobile phone. The charging surface is recessed compared to the upper surface of the outer periphery. When the mobile phone is supported on the support surface, an airflow channel is formed between the mobile phone and the charging surface. The fan built into the wireless charger drives the ambient temperature airflow into the airflow channel through the air outlet. In the airflow channel, the ambient temperature airflow exchanges heat with the mobile phone and the temperature rises. Then it flows out in a straight line from the two free ends of the U-shaped outer periphery (that is, the outlet of the airflow channel). The heat dissipation effect of the mobile phone is poor. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle-mounted wireless charger to improve the heat dissipation of mobile phones.

[0005] This utility model provides a vehicle-mounted wireless charger, which includes:

[0006] A first housing has an outer end face, on which a U-shaped support frame is protruding. The support frame has a U-shaped support surface, which is used to support a mobile phone and is spaced apart from the outer end face. When the mobile phone is supported on the support surface, the mobile phone, the support frame, and the outer end face can form a heat dissipation channel. The first housing also has an air inlet communicating with the heat dissipation channel. Both free ends of the support frame are provided with guide surfaces, and a horn-shaped opening is formed between the two guide surfaces. The opening communicates with the heat dissipation channel and gradually expands outward.

[0007] A second housing, connected to the first housing, and the first and second housings enclosing a receiving space for accommodating the transmitting coil module; and,

[0008] A fan assembly is installed in the second housing, and the fan assembly is configured to drive airflow through the air inlet into the heat dissipation channel.

[0009] As a preferred technical solution for in-vehicle wireless chargers, the mobile phone has a protruding camera, and the outer end face is used to support the camera.

[0010] As a preferred technical solution for in-vehicle wireless chargers, when the mobile phone is supported on the support surface, the camera is located outside the heat dissipation channel.

[0011] As a preferred technical solution for in-vehicle wireless chargers, the air inlet is arc-shaped, and the tangent direction of the air inlet is set at an angle to the supporting surface.

[0012] As a preferred technical solution for in-vehicle wireless chargers, the fan assembly includes:

[0013] A cover, fixedly connected to the second housing, wherein the cover and the second housing form an air duct, and the air duct communicates with the air inlet; and,

[0014] A fan is located in the air duct, and the fan is fixedly installed on the cover or the second housing. The cover is provided with an air intake, and the fan is configured to draw in air from the air intake and discharge it into the air duct.

[0015] As a preferred technical solution for a vehicle-mounted wireless charger, the opening is opened along a set direction, the first housing has a first end and a second end along the set direction, the air inlet is disposed at the first end, and the opening faces the second end and is spaced apart from the second end.

[0016] As a preferred technical solution for in-vehicle wireless chargers, the distance between the opening and the first end is greater than the distance between the opening and the second end.

[0017] As a preferred technical solution for in-vehicle wireless chargers, the transmitting coil module includes a circuit board and multiple transmitting coils, which are arranged alternately along the predetermined direction.

[0018] As a preferred technical solution for vehicle-mounted wireless chargers, the transmitting coil module further includes a shielding sheet, which is fixedly connected to the second housing. Multiple transmitting coils are adhered to the shielding sheet, and the multiple transmitting coils are located between the shielding sheet and the first housing.

[0019] As a preferred technical solution for an in-vehicle wireless charger, the circuit board includes a power circuit board and an antenna circuit board. The antenna circuit board and the power circuit board are electrically connected, and both the antenna circuit board and the power circuit board are fixedly connected to the second housing. The antenna circuit board is located between the transmitting coil and the first housing.

[0020] The vehicle-mounted wireless charger provided by this utility model has at least the following beneficial effects:

[0021] The vehicle-mounted wireless charger has a U-shaped support frame protruding from the outer end face of the first housing. The support frame has a U-shaped support surface and is spaced apart from the outer end face. When the mobile phone is supported on the support surface, the mobile phone, the support frame, and the outer end face can form a heat dissipation channel. The first housing also has an air inlet that communicates with the heat dissipation channel. Both free ends of the support frame are provided with guide surfaces, and a horn-shaped opening is formed between the two guide surfaces. The opening communicates with the heat dissipation channel and gradually expands outward. During the charging process, the airflow is driven by the fan assembly to enter the heat dissipation channel through the air inlet. The airflow exchanges heat with the mobile phone and is then discharged through the opening. Because the opening is horn-shaped and gradually expands outward, the airflow spreads outward in a fan shape after passing through the opening, which can effectively improve the heat dissipation effect of the mobile phone. Attached Figure Description

[0022] Figure 1 This is a first structural schematic diagram of the vehicle-mounted wireless charger and mobile phone in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the first structure of the vehicle-mounted wireless charger in this embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the second structure of the vehicle-mounted wireless charger in this embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the second structure of the vehicle-mounted wireless charger and mobile phone in an embodiment of this utility model;

[0026] Figure 5 This is an exploded view of the vehicle-mounted wireless charger in an embodiment of this utility model;

[0027] Figure 6 This is a first cross-sectional view of the vehicle-mounted wireless charger in this embodiment of the present invention;

[0028] Figure 7 This is a second cross-sectional view of the vehicle-mounted wireless charger in an embodiment of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the mobile phone in an embodiment of this utility model.

[0030] In the picture:

[0031] 1. First housing; 11. Outer end face; 12. Air inlet; 13. First end; 14. Second end;

[0032] 2. Support frame; 21. First support bar; 22. Second support bar; 23. Third support bar; 24. Guide surface; 25. Opening; 26. Support surface;

[0033] 3. Second housing; 31. Heat dissipation fins;

[0034] 4. Heat dissipation channels;

[0035] 5. Fan assembly; 51. Housing; 511. Air intake; 52. Fan; 53. Air duct;

[0036] 6. Transmitter coil module; 61. Power supply circuit board; 62. Antenna circuit board; 63. Transmitter coil; 64. Shielding sheet;

[0037] 7. Accommodation space; 8. Thermally conductive adhesive; 9. Screws;

[0038] 10. Mobile phone; 101. Camera. Detailed Implementation

[0039] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] Existing in-vehicle wireless chargers have a U-shaped outer perimeter in the first housing, and a support surface and a charging surface located inside the outer perimeter. The two free ends of the outer perimeter are flush with one end of the first housing along its length. The support surface is flush with the upper surface of the outer perimeter and is used to support the phone. The charging surface is recessed compared to the upper surface of the outer perimeter. When the phone is supported on the support surface, an airflow channel is formed between the phone and the charging surface. A fan built into the wireless charger drives ambient airflow into the airflow channel through the air outlet. In the airflow channel, the ambient airflow exchanges heat with the phone and its temperature rises. Then, it flows out in a straight line from the two free ends of the U-shaped outer perimeter (i.e., the outlet of the airflow channel). This can easily lead to very high temperatures at the two free ends of the U-shaped outer perimeter. When the user picks up the phone, the high-temperature airflow will cause a decrease in the user experience.

[0044] To address this issue, this embodiment provides an in-vehicle wireless charger.

[0045] Specifically, please refer to Figures 1 to 7The vehicle-mounted wireless charger includes a first housing 1, a second housing 3, and a fan assembly 5. The first housing 1 has an outer end face 11, on which a U-shaped support frame 2 protrudes. The support frame 2 has a U-shaped support surface 26, which supports a mobile phone 10 and is spaced apart from the outer end face 11. When the mobile phone 10 is supported on the support surface 26, the mobile phone 10, the support frame 2, and the outer end face 11 form a heat dissipation channel 4. The first housing 1 also has an air inlet 12 communicating with the heat dissipation channel 4. The two free ends of the support frame 2 each have a guide surface 24, forming a flared opening 25 between the two guide surfaces 24. The opening 25 communicates with the heat dissipation channel 4 and gradually expands outwards. The second housing 3 is connected to the first housing 1, and the first housing 1 and the second housing 3 form a receiving space 7 for accommodating the transmitting coil module 6. The fan assembly 5 is installed on the second housing 3 and is configured to drive airflow through the air inlet 12 into the heat dissipation channel 4. In this embodiment, when the mobile phone 10 is supported on the support surface 26, the receiving coil inside the mobile phone 10 can be coupled with the transmitting coil 63 of the transmitting coil module 6. The receiving coil can receive the power transmitted by the transmitting coil 63, thereby charging the mobile phone 10. During the charging process, the airflow is driven by the fan assembly 52 to enter the heat dissipation channel 4 through the air inlet 12. After the airflow exchanges heat with the mobile phone 10, it is discharged through the opening 25. Since the opening 25 is shaped like a horn and gradually expands outward, the airflow spreads outward in a fan shape after passing through the opening 25, which helps to dissipate heat in time and effectively improves the heat dissipation effect of the mobile phone 10.

[0046] In other embodiments, the mobile phone 10 may be replaced by a tablet computer, smartwatch, etc.

[0047] In this embodiment, the first housing 1 is the upper housing, and the second housing 3 is the lower housing; that is, the first housing 1 and the second housing 3 are arranged in a vertical direction. In other embodiments, the relative spatial positions of the first housing 1 and the second housing 3 can be set according to actual needs.

[0048] Alternatively, please refer to Figure 2 In this embodiment, the guide surface 24 can be an inclined surface. In other embodiments, the guide surface 24 can also be an arc surface.

[0049] Optionally, the first housing 1 and the support frame 2 are integrally formed, which can not only reduce the number of parts, but also the support frame 2 can act as a reinforcing rib to improve the structural strength of the first housing 1.

[0050] Specifically, please continue to refer to Figure 2In this embodiment, the support frame 2 includes a first support strip 21, a second support strip 22, and a third support strip 23 connected in sequence. The first support strip 21 and the second support strip 22 are arranged parallel to each other and spaced apart at both ends of the second support strip 22. Two guide surfaces 24 are located at the ends of the first support strip 21 away from the second support strip 22 and the third support strip 23 away from the second support strip 22, respectively. The support surface 26 is formed by splicing the upper surfaces of the first support strip 21, the second support strip 22, and the third support strip 23. When the mobile phone 10 is supported on the support surface 26, the mobile phone 10 can fit in close to the support surface 26, and the support surface 26 can stably support the mobile phone 10. It can also prevent the formation of gaps between the mobile phone 10 and the support surface 26, thereby preventing airflow from escaping from the gaps and ensuring reliable heat dissipation for the mobile phone 10.

[0051] Alternatively, please continue to refer to Figure 2 The first support bar 21, the second support bar 22 and the third support bar 23 are arranged circumferentially along the outer end face 11 to make full use of the space of the outer end face 11 and to ensure that the area of ​​the heat dissipation channel 4 is relatively large, so that the airflow has a large heat exchange area with the mobile phone 10 when it flows through the heat dissipation channel 4.

[0052] Alternatively, please refer to Figure 2 Opening 25 is along a set direction (e.g.) Figure 2 The first housing 1 has a first end 13 and a second end 14 along a set direction (in the direction indicated by the middle arrow ab). An air inlet 12 is disposed at the first end 13, and an opening 25 faces the second end 14 and is spaced apart from the second end 14. Specifically, in this embodiment, when the mobile phone 10 is supported on the support frame 2, the end of the mobile phone 10 closest to the second end 14 is suspended in the air. This arrangement makes it easy for the user to pick up the mobile phone 10 through the suspended end. In addition, after the airflow passes through the air inlet 12, it flows from one end of the mobile phone 10 to the other end along the length direction, flowing through the entire mobile phone 10 to ensure the heat dissipation effect of the mobile phone 10.

[0053] Specifically, please refer to Figure 1 and Figure 4 In this embodiment, the direction is set to the length direction of the mobile phone 10, and the first support bar 21 and the second support bar 22 are along the width direction of the mobile phone 10 (e.g., Figure 2 The spacing between the first support bar 21 and the second support bar 22 (as indicated by the middle arrow cd) is less than the width of the phone 10, allowing both ends of the phone 10 in the width direction to be supported by the first support bar 21 and the third support bar 23. When the phone 10 is supported by the support frame 2, one end of the phone 10 in the length direction is in contact with the upper surface of the second support bar 22, while the other end is suspended. In other embodiments, the setting direction can also be set to the width direction of the phone 10.

[0054] Alternatively, please refer to Figure 1 and Figure 8 The mobile phone 10 has a protruding camera 101, and the outer end face 11 is used to support the camera 101. This arrangement allows the mobile phone 10 to be supported in the length direction by both the outer end face 11 and the second support bar 22, which can ensure the stability of the support for the mobile phone 10.

[0055] Alternatively, please refer to Figure 2 The distance between the opening 25 and the first end 13 is greater than the distance between the opening 25 and the second end 14. It is understandable that the length of the phone 10 will not exceed the length of the first casing 1. This design allows more than half of the phone 10 to be supported by the support frame 2, ensuring the stability of the phone 10. Furthermore, even if the phone 10 does not have a protruding camera 101, the support frame 2 can still ensure the stability of the phone 10.

[0056] Optionally, when the phone 10 is supported on the support surface 26, the camera 101 is located outside the heat dissipation channel 4. With this configuration, the camera 101 of the phone 10 is supported by the outer end surface 11, which can accommodate various possible positions of the camera 101 on the phone 10. For example, the camera 101 can be set in the middle of the phone 10 or on the side of the phone 10, which effectively improves the universality of various models of the phone 10. In addition, when the user moves the phone 10, the two guide surfaces 24 can prevent the camera 101 from getting stuck between the first support bar 21 and the third support bar 23.

[0057] Alternatively, please refer to Figure 6 and Figure 7 The air inlet 12 is arc-shaped, and its tangent is set at an angle to the support surface 26. This design ensures that the airflow enters the heat dissipation channel 4 relatively smoothly; in addition, it also helps to increase the cross-sectional area of ​​the air inlet 12. In other embodiments, the tangent of the air inlet 12 may also be tangent to the support surface 26.

[0058] Alternatively, please refer to Figure 2 The first housing 1 is provided with multiple air inlets 12, which are evenly and spaced along the width direction of the mobile phone 10, so as to ensure that the airflow entering the heat dissipation channel 4 is relatively balanced.

[0059] Alternatively, please refer to Figures 5 to 7The fan assembly 5 includes a housing 51 and a fan 52. The housing 51 is fixedly connected to the second housing 3, and the housing 51 and the second housing 3 form an air duct 53, which communicates with the air inlet 12. The fan 52 is located in the air duct 53 and is fixedly mounted on the housing 51 or the second housing 3. The housing 51 has an air intake 511, and the fan 52 is configured to draw in air from the air intake 511 and discharge it into the air duct 53. Driven by the fan 52, air enters from the air intake 511 and is discharged into the air duct 53, then enters the heat dissipation channel 4 through the air inlet 12. Specifically, the housing 51 is fixed to the second housing 3 by screws 9. Preferably, the air duct 53 is arc-shaped to facilitate smooth airflow within it.

[0060] Alternatively, please refer to Figure 5 The transmitting coil module 6 includes a circuit board and multiple transmitting coils 63, which are arranged alternately along a predetermined direction. This arrangement ensures stable charging of the phone 10 as long as the receiving coil in the phone 10 is within the coverage area of ​​the multiple transmitting coils 63, improving the convenience of charging operations. This embodiment exemplarily provides a scheme where the transmitting coil module 6 includes three transmitting coils 63. In other embodiments, the number of transmitting coils 63 can be set according to actual needs, such as one or two.

[0061] Alternatively, please refer to Figure 5 The transmitting coil module 6 also includes a shielding plate 64, which is fixedly connected to the second housing 3. Multiple transmitting coils 63 are adhered to the shielding plate 64 and are located between the shielding plate 64 and the first housing 1. This arrangement allows the shielding plate 64 to shield the magnetic field generated by the transmitting coils 63. The shielding plate 64 can be made of ferrite or nanocrystalline material.

[0062] Optionally, the circuit board includes a power supply circuit board 61 and an antenna circuit board 62. The antenna circuit board 62 and the power supply circuit board 61 are electrically connected, and both are fixedly connected to the second housing 3. The antenna circuit board 62 is located between the transmitting coil 63 and the first housing 1. Specifically, the power supply circuit board 61 and the antenna circuit board 62 are electrically connected via a connector, and both are fixedly connected to the second housing 3 by screws 9. The power supply circuit board 61 is used to connect to a power source and supply power to other electrical components such as the transmitting coil 63 and the fan 52.

[0063] Optionally, the second housing 3 is made of metal, and its outer surface is provided with heat dissipation fins 31 to facilitate heat dissipation from the internal transmitting coil module 6. Preferably, the accommodating space 7 is further provided with a plurality of thermally conductive adhesives 8, which conduct the heat emitted by the transmitting coil module 6 to the second housing 3 to improve the heat dissipation effect.

[0064] In summary, the in-vehicle wireless charger provided in this embodiment, compared with the in-vehicle wireless charger in the prior art, can keep the temperature of the mobile phone 10 at 36°C when charging the mobile phone 10, and the charging speed is also effectively increased by about 20%.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vehicle-mounted wireless charger, characterized in that, include: A first housing has an outer end face, on which a U-shaped support frame is protruding. The support frame has a U-shaped support surface, which is used to support a mobile phone and is spaced apart from the outer end face. When the mobile phone is supported on the support surface, the mobile phone, the support frame, and the outer end face can form a heat dissipation channel. The first housing also has an air inlet communicating with the heat dissipation channel. Both free ends of the support frame are provided with guide surfaces, and a horn-shaped opening is formed between the two guide surfaces. The opening communicates with the heat dissipation channel and gradually expands outward. A second housing is connected to the first housing, and the first housing and the second housing enclose a receiving space for accommodating the transmitting coil module; as well as, A fan assembly is installed in the second housing, and the fan assembly is configured to drive airflow through the air inlet into the heat dissipation channel.

2. The vehicle-mounted wireless charger according to claim 1, characterized in that, The mobile phone has a protruding camera, and the outer end face is used to support the camera.

3. The vehicle-mounted wireless charger according to claim 2, characterized in that, When the phone is supported on the support surface, the camera is located outside the heat dissipation channel.

4. The vehicle-mounted wireless charger according to claim 1, characterized in that, The air inlet is arc-shaped, and the tangent of the air inlet is set at an angle to the supporting surface.

5. The vehicle-mounted wireless charger according to claim 1, characterized in that, The wind turbine assembly includes: A cover, fixedly connected to the second housing, wherein the cover and the second housing form an air duct, and the air duct communicates with the air inlet; and, A fan is located in the air duct, and the fan is fixedly installed on the cover or the second housing. The cover is provided with an air intake, and the fan is configured to draw in air from the air intake and discharge it into the air duct.

6. The vehicle-mounted wireless charger according to any one of claims 1-5, characterized in that, The opening is opened along a set direction, the first housing has a first end and a second end along the set direction, the air inlet is disposed at the first end, and the opening faces the second end and is spaced apart from the second end.

7. The vehicle-mounted wireless charger according to claim 6, characterized in that, The distance between the opening and the first end is greater than the distance between the opening and the second end.

8. The vehicle-mounted wireless charger according to claim 6, characterized in that, The transmitting coil module includes a circuit board and multiple transmitting coils, which are arranged alternately along the predetermined direction.

9. The vehicle-mounted wireless charger according to claim 8, characterized in that, The transmitting coil module also includes a shielding sheet, which is fixedly connected to the second housing. Multiple transmitting coils are adhered to the shielding sheet and are located between the shielding sheet and the first housing.

10. The vehicle-mounted wireless charger according to claim 8, characterized in that, The circuit board includes a power supply circuit board and an antenna circuit board. The antenna circuit board and the power supply circuit board are electrically connected, and both the antenna circuit board and the power supply circuit board are fixedly connected to the second housing. The antenna circuit board is located between the transmitting coil and the first housing.

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