Wireless charging device and vehicle

Abstract

The utility model discloses a wireless charging device and a vehicle, and the wireless charging device comprises a housing which is internally provided with an installation cavity and is provided with a first through hole communicated with the installation cavity; the power coil is arranged in the mounting cavity and is used for charging equipment; the circuit board is arranged in the mounting cavity, the circuit board is arranged on one side of the power coil in the thickness direction and electrically connected with the power coil, and a second via hole is formed in the circuit board; and the heat exchanger assembly is arranged on the side, facing the circuit board, of the thickness direction of the power coil and penetrates through the first via hole and the second via hole, and the heat exchanger assembly is suitable for conducting contact type heat exchange with the power coil. According to the wireless charging equipment of the utility model, the heating and cooling of the power coil can be realized, an air duct is not needed, the light weight of the wireless charging equipment is facilitated, the arrangement of an air outlet is avoided, the noise is reduced, foreign matters and water entering the wireless charging equipment are reduced, and the sealing performance of the wireless charging equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging devices, in particular to a wireless charging device and a vehicle. Background Art

[0002] There are two types of current mobile phone wireless charging modules. One is a slow charging scheme, and such a wireless charging module can meet the requirements through natural wind cooling. The other is a fast charging scheme, which generates a large amount of heat. Currently, all fast charging schemes on the market adopt an active air supply scheme. However, in the active air supply scheme, the design of the air duct and the air outlet is required. The design of the air duct and the air outlet needs to occupy additional space of the wireless charging module, and at the same time, it may cause foreign objects and water to enter the wireless charging module, and the flow of air will also cause excessive noise.

[0003] Moreover, the current heat dissipation method can only achieve the heat dissipation of the wireless charging module and cannot achieve the heating of the wireless charging module, resulting in abnormal operation of the wireless charging module at too low temperatures. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a wireless charging device, which can realize the heating and cooling of the power coil, is beneficial to the light weight of the wireless charging device, reduces noise, reduces the entry of foreign objects and water into the wireless charging device, and improves the sealing performance of the wireless charging device.

[0005] The utility model also provides a vehicle, including the above-mentioned wireless charging device.

[0006] The wireless charging device according to the embodiment of the utility model includes: a housing having an installation cavity therein, and a first through hole communicating with the installation cavity on the housing; a power coil disposed in the installation cavity for charging the device; a circuit board disposed in the installation cavity, the circuit board being disposed on one side in the thickness direction of the power coil and electrically connected to the power coil, and the circuit board having a second through hole; a heat exchanger assembly disposed on the side of the power coil in the thickness direction facing the circuit board and passing through the first through hole and the second through hole, and the heat exchanger assembly is adapted to perform contact heat exchange with the power coil.

[0007] According to the wireless charging device of the embodiment of the utility model, by setting a first through hole on the shell, setting a second through hole on the circuit board, the circuit board is set on one side of the power coil thickness direction, and the heat exchanger assembly is set on the side of the power coil thickness direction facing the circuit board, and is penetrated through the first through hole and the second through hole, the heat exchanger assembly is suitable for contact heat exchange with the power coil, which can achieve heating and cooling of the power coil, so that the power coil can work efficiently at different ambient temperatures, thereby improving the wireless charging efficiency. At the same time, there is no need to set up an air duct, which is conducive to the lightweight of the wireless charging device, and avoids setting up an air outlet, reducing noise, reducing the entry of foreign matter and water into the wireless charging device, and improving the sealing of the wireless charging device.

[0008] In some embodiments of the present invention, the heat exchanger assembly includes a semiconductor and a heat sink that are interconnected, the semiconductor is arranged between the power coil and the circuit board, the heat sink is arranged on a side of the semiconductor away from the power coil, and is passed through the first via hole and the second via hole.

[0009] In some embodiments of the present invention, the heat exchanger assembly further includes: a heat dissipation fan, wherein the heat dissipation fan is disposed outside the installation cavity, the heat dissipation fan is disposed on a side of the radiator away from the power coil, and is connected to the radiator.

[0010] In some embodiments of the present invention, the wireless charging device further includes: a bracket, which is arranged in the installation cavity and between the power coil and the semiconductor, and the bracket is connected to the power coil, the semiconductor, the circuit board and the shell.

[0011] In some embodiments of the present invention, a thermal conductive adhesive is provided between the bracket and the semiconductor; and / or a thermal conductive adhesive is provided between the semiconductor and the heat sink.

[0012] In some embodiments of the present utility model, the shell includes an upper shell and a lower shell connected to each other, the installation cavity is defined between the upper shell and the lower shell, and the upper shell is arranged on a side of the circuit board facing the power coil.

[0013] In some embodiments of the utility model, the upper shell has a groove on one side facing away from the circuit board, and the bottom wall of the groove has an opening. The wireless charging device also includes: a filter board, which is arranged in the groove, and the filter board is electrically connected to the circuit board and the power coil.

[0014] In some embodiments of the present invention, it further includes: a temperature sensor, which is disposed on the filter board and connected to the filter board.

[0015] In some embodiments of the present utility model, the wireless charging device further includes: a heat preservation member, which is disposed between the hole wall of the first through hole and the heat exchanger assembly.

[0016] A vehicle according to an embodiment of the present utility model includes the above-mentioned wireless charging device.

[0017] For the vehicle according to the embodiment of the present utility model, by providing the above-mentioned wireless charging device, a first through hole is provided on the housing, a second through hole is provided on the circuit board, the circuit board is disposed on one side in the thickness direction of the power coil, the heat exchanger assembly is disposed on the side facing the circuit board in the thickness direction of the power coil and passes through the first through hole and the second through hole, and the heat exchanger assembly is adapted to perform contact heat exchange with the power coil, so that the temperature rise and fall of the power coil can be realized, and thus the power coil can work efficiently at different ambient temperatures, improving the wireless charging efficiency. At the same time, there is no need to provide an air duct, which is beneficial to the light weight of the wireless charging device, and the setting of an air outlet is avoided, reducing noise, reducing the entry of foreign objects and water into the wireless charging device, and improving the sealing performance of the wireless charging device.

[0018] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a perspective view of a wireless charging device according to an embodiment of the present utility model;

[0021] Figure 2 is a sectional perspective view of a wireless charging device according to an embodiment of the present utility model;

[0022] Figure 3 is Figure 2 an enlarged view of part A in

[0023] Reference numerals:

[0024] 10. Wireless charging device;

[0025] 1. Housing; 11. Upper housing; 12. Lower housing; 13. Installation cavity; 14. First through hole;

[0026] 2. Power coil;

[0027] 3. Circuit board; 31. Second through hole;

[0028] 4. Heat exchanger assembly; 41. Semiconductor; 42. Radiator; 43. Cooling fan;

[0029] 5. Bracket;

[0030] 6. Filter board;

[0031] 7. Thermal insulation component;

[0032] 8. Temperature sensor. Detailed implementation manners

[0033] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where 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 drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] Next, refer to Figures 1 - 3 Describe the wireless charging device 10 according to the embodiments of the present utility model.

[0037] As Figures 1 - 3 shown, the wireless charging device 10 according to the embodiments of the present utility model includes: a housing 1, a power coil 2, a circuit board 3, and a heat exchanger assembly 4.

[0038] Specifically, refer toFigures 1 - 3 The shell 1 has an installation cavity 13, and the shell 1 has a first through hole 14 connected to the installation cavity 13; the power coil 2 is arranged in the installation cavity 13 for charging the device; the circuit board 3 is arranged in the installation cavity 13, the circuit board 3 is arranged on one side of the power coil 2 in the thickness direction and is electrically connected to the power coil 2, and the circuit board 3 has a second through hole 31; the heat exchanger assembly 4 is arranged on the side of the power coil 2 in the thickness direction facing the circuit board 3, and is penetrated by the first through hole 14 and the second through hole 31, and the heat exchanger assembly 4 is suitable for contact heat exchange with the power coil 2.

[0039] It should be noted that the power coil 2 transmits electrical energy to the receiving coil of the electrical device (such as a mobile phone, etc.) through the action of the electromagnetic field, thereby realizing wireless charging of the electrical device. The circuit board 3 is electrically connected to the power coil 2 to realize the operation of the power coil 2, and the circuit board 3 is connected to the housing 1 to realize the connection and fixation of the circuit board 3. At the same time, the circuit board 3 is electrically connected to the heat exchanger assembly 4 to realize the normal operation of the heat exchanger assembly 4. Part of the heat exchanger assembly 4 is arranged in the installation cavity 13, and part of it is arranged in the external environment. The part of the heat exchanger assembly 4 arranged in the installation cavity 13 is suitable for contact heat exchange with the power coil 2. The contact heat exchange can be direct contact between the heat exchanger assembly 4 and the power coil 2, or it can be indirect contact between the heat exchanger assembly 4 and the power coil 2. The part of the heat exchanger assembly 4 arranged in the external environment can realize heat exchange between the heat exchanger assembly 4 and the external environment, thereby realizing the heating and cooling of the power coil 2.

[0040] It can be understood that when in a low-temperature environment, the end of the heat exchanger assembly 4 facing the power coil 2 can heat the power coil 2, while the end of the heat exchanger assembly 4 facing away from the power coil 2 absorbs heat from the external environment, thereby achieving the heating of the power coil 2, so that the power coil 2 can still work efficiently in a low-temperature environment, thereby improving the efficiency of wireless charging. When in a high-temperature environment, the end of the heat exchanger assembly 4 facing the power coil 2 can cool the power coil 2, while the end of the heat exchanger assembly 4 facing away from the power coil 2 can release heat to the external environment, thereby achieving the heating of the power coil 2, so that the power coil 2 can still work efficiently in a low-temperature environment, thereby improving the efficiency of wireless charging.

[0041] Therefore, through the heat exchange between the heat exchanger assembly 4, the power coil 2 and the external environment, the power coil 2 can be heated up and cooled down, so that the power coil 2 can work efficiently at different ambient temperatures, thereby improving the wireless charging efficiency.

[0042] Further, Figure 2 and Figure 3As shown, since the first via hole 14 is provided on the housing 1 and the second via hole 31 is provided on the circuit board 3, the first via hole 14 and the second via hole 31 are arranged relative to each other in the thickness direction of the power coil 2, so that the heat exchanger assembly 4 can pass through the first via hole 14 and the second via hole 31 to perform contact heat exchange (heat conduction) with the power coil 2. Compared with using air cooling (mainly heat convection) to dissipate heat from the power coil 2, the contact heat exchange between the heat exchanger assembly 4 and the power coil 2 does not require the provision of an air duct, which is conducive to the lightweight of the wireless charging device 10, and at the same time avoids the provision of an air outlet, reduces noise, reduces the entry of foreign matter and water into the wireless charging device 10, and improves the sealing of the wireless charging device 10.

[0043] In addition, compared with air cooling (mainly heat convection) for heat exchange of the power coil 2, contact heat exchange (heat conduction) has higher heat exchange efficiency and higher efficiency in cooling and heating the power coil 2, thereby further ensuring that the power coil 2 is in a suitable working temperature environment and further ensuring the efficiency of wireless charging.

[0044] The circuit board 3 may include a plurality of interconnected sub-boards, each of which has a first sub-hole at its edge, and a plurality of sub-holes form a first via hole 14. Alternatively, the circuit board 3 is a whole, and a second via hole 31 penetrates the circuit board 3 along the thickness direction of the circuit board 3.

[0045] According to the wireless charging device 10 of the embodiment of the utility model, by setting the first through hole 14 on the housing 1, setting the second through hole 31 on the circuit board 3, the circuit board 3 is set on one side of the power coil 2 in the thickness direction, and the heat exchanger assembly 4 is set on the side of the power coil 2 in the thickness direction facing the circuit board 3, and is penetrated by the first through hole 14 and the second through hole 31. The heat exchanger assembly 4 is suitable for contact heat exchange with the power coil 2, which can achieve heating and cooling of the power coil 2, so that the power coil 2 can work efficiently at different ambient temperatures, thereby improving the wireless charging efficiency. At the same time, there is no need to set up an air duct, which is conducive to the lightweight of the wireless charging device 10, and avoids setting up an air outlet, reduces noise, reduces the entry of foreign matter and water into the wireless charging device 10, and improves the sealing of the wireless charging device 10.

[0046] In some embodiments of the present invention, Figures 1 - 3 As shown, the heat exchanger assembly 4 includes a semiconductor 41 and a heat sink 42 that are interconnected. The semiconductor 41 is arranged between the power coil 2 and the circuit board 3. The heat sink 42 is arranged on the side of the semiconductor 41 away from the power coil 2 and passes through the first via 14 and the second via 31.

[0047] It can be understood that the semiconductor 41 is a thermoelectric semiconductor 41. Among the two ends of the semiconductor 41 along the thickness direction of the power coil 2, when one end cools, the other end will heat. One end of the semiconductor 41 along the thickness direction of the power coil 2 is in contact with the power coil 2 for heat exchange, so as to realize the cooling or heating of the power coil 2. The other end is in contact with the radiator 42, and the radiator 42 can better enable the end of the semiconductor 41 facing away from the power coil 2 to exchange heat with the external environment, thereby improving the heat exchange efficiency, and enabling the semiconductor 41 to better cool or heat the power coil 2.

[0048] In some embodiments of the present invention, as Figures 1 - 3 shown, the heat exchanger assembly 4 further includes: a cooling fan 43, the cooling fan 43 is arranged outside the installation cavity 13, the cooling fan 43 is arranged on the side of the radiator 42 facing away from the power coil 2, and is connected to the radiator 42.

[0049] It can be understood that the setting of the cooling fan 43 improves the flow velocity of the air flow, thereby improving the heat exchange efficiency between the radiator 42 and the external environment, indirectly improving the heat exchange efficiency between the semiconductor 41 and the external environment, and enabling the semiconductor 41 to better cool or heat the power coil 2.

[0050] In some embodiments of the present invention, as Figure 2 and Figure 3 shown, the wireless charging device 10 further includes: a bracket 5, the bracket 5 is arranged in the installation cavity 13 and between the power coil 2 and the semiconductor 41, and the bracket 5 is connected to the power coil 2, the semiconductor 41, the circuit board 3 and the housing 1.

[0051] It can be understood that both ends of the bracket 5 in the length direction are connected to the circuit board 3 and the housing 1 respectively, for example, by fasteners. One side of the bracket 5 in the thickness direction is connected to the power coil 2, and the other side is connected to the semiconductor 41, so that the power coil 2, the semiconductor 41 and the circuit board 3 can be well fixed in the installation cavity 13, improving the installation stability of the power coil 2, the semiconductor 41 and the circuit board 3.

[0052] Furthermore, the bracket 5 can be a metal part, and the metal part has high structural strength and good thermal conductivity, thus ensuring the stability of the bracket 5, further improving the installation stability of the power coil 2, the semiconductor 41 and the circuit board 3, and at the same time ensuring the heat transfer efficiency between the semiconductor 41 and the power coil 2.

[0053] In some embodiments of the present invention, a thermal conductive adhesive is provided between the bracket 5 and the semiconductor 41. Thus, the heat transfer efficiency between the bracket 5 and the semiconductor 41 is further improved, thereby improving the heat transfer efficiency between the semiconductor 41 and the power coil 2, and further improving the heat exchange efficiency between the heat exchanger assembly 4 and the power coil 2.

[0054] In some embodiments of the present utility model, a thermal conductive adhesive is provided between the semiconductor 41 and the radiator 42. Thereby, the heat transfer efficiency between the semiconductor 41 and the radiator 42 is further improved, so that the heat exchange efficiency between the semiconductor 41 and the external environment is improved, and thus the heat exchange efficiency between the heat exchanger assembly 4 and the external environment is improved, enabling the semiconductor 41 to better cool or heat the power coil 2.

[0055] In some embodiments of the present utility model, as Figure 2 and Figure 3 shown, the wireless charging device 10 further includes: a heat insulation member 7, which is provided between the hole wall of the first through hole 14 and the heat exchanger assembly 4. Among them, the heat insulation member 7 can be a sponge, etc. The heat insulation member 7 is annular, disposed in the first through hole 14 and sleeved on the heat exchanger assembly 4. The setting of the heat insulation member 7 can play a role in thermal isolation between the installation cavity 13 and the external environment, thereby reducing the generation of condensed water in the installation cavity 13 and improving the safety during the use of the wireless charging device 10.

[0056] In some embodiments of the present utility model, as Figures 1 - 3 shown, the housing 1 includes an upper housing 111 and a lower housing 121 that are connected to each other. An installation cavity 13 is defined between the upper housing 111 and the lower housing 121, and the upper housing 111 is disposed on one side of the circuit board 3 facing the power coil 2. Thereby, the internal structure of the wireless charging device 10 can be fixed and protected.

[0057] In some embodiments of the present utility model, as Figures 1 - 3 shown, the side of the upper housing 111 facing away from the circuit board 3 has a groove, and there is an opening on the bottom wall of the groove. The wireless charging device 10 further includes: a filter board 6, which is disposed in the groove, and the filter board 6 is electrically connected to both the circuit board 3 and the power coil 2.

[0058] It can be understood that the filter board 6 can filter out high-frequency noise and unnecessary fluctuations in the current, making the output current more stable. This is very important for ensuring that the wireless charging device 10 can work safely and efficiently, and at the same time can reduce interference with other electronic devices.

[0059] Among them, there is an opening on the bottom wall of the groove, and the opening and the power coil 2 are oppositely arranged in the thickness direction of the power coil 2, thereby reducing the blockage and interference to the energy transmission of the power coil 2 and improving the wireless charging efficiency.

[0060] In some embodiments of the present utility model, as Figure 2 and Figure 3 shown, the wireless charging device 10 further includes: a temperature sensor 8, which is disposed on the filter board 6 and connected to the filter board 6.

[0061] It is understandable that the temperature sensor 8 is arranged such that the wireless charging device 10 can actively identify the external environmental temperature and actively increase or decrease the temperature, so that the wireless charging device 10 always stays in the most suitable working environment, improving the charging efficiency of the wireless charging device 10.

[0062] The vehicle according to an embodiment of the present invention will be described below.

[0063] The vehicle according to an embodiment of the present invention includes the above-mentioned wireless charging device 10. Among them, the wireless charging device 10 can be fixedly installed at positions such as the central console of the vehicle.

[0064] For the vehicle according to an embodiment of the present invention, by arranging the above-mentioned wireless charging device 10, a first through hole 14 is provided on the housing 1, a second through hole 31 is provided on the circuit board 3, the circuit board 3 is arranged on one side in the thickness direction of the power coil 2, the heat exchanger assembly 4 is arranged on the side facing the circuit board 3 in the thickness direction of the power coil 2 and passes through the first through hole 14 and the second through hole 31, and the heat exchanger assembly 4 is adapted to perform contact heat exchange with the power coil 2, so that the temperature of the power coil 2 can be increased and decreased, so that the power coil 2 can work efficiently at different environmental temperatures, improving the wireless charging efficiency. At the same time, there is no need to set up an air duct, which is beneficial to the light weight of the wireless charging device 10, and avoids setting an air outlet, reducing noise, reducing the entry of foreign objects and water into the wireless charging device 10, and improving the sealing performance of the wireless charging device 10.

[0065] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wireless charging device, characterized in that: include: A housing, wherein the housing has a mounting cavity therein, and the housing has a first through hole communicating with the mounting cavity; A power coil, which is disposed in the installation cavity and is used to charge the device; A circuit board, the circuit board is arranged in the installation cavity, the circuit board is arranged on one side of the power coil in the thickness direction and is electrically connected to the power coil, and the circuit board has a second via hole; A heat exchanger assembly is arranged on the side of the power coil in the thickness direction facing the circuit board and is penetrated through the first via hole and the second via hole. The heat exchanger assembly is suitable for contact heat exchange with the power coil.

2. The wireless charging device according to claim 1, characterized in that: The heat exchanger assembly includes a semiconductor and a heat sink that are connected to each other. The semiconductor is arranged between the power coil and the circuit board. The heat sink is arranged on a side of the semiconductor away from the power coil and penetrates the first via hole and the second via hole.

3. The wireless charging device according to claim 2, characterized in that: The heat exchanger assembly also includes: a heat dissipation fan, which is arranged outside the installation cavity, and the heat dissipation fan is arranged on a side of the radiator away from the power coil, and is connected to the radiator.

4. The wireless charging device according to claim 2, characterized in that: Also includes: A bracket is arranged in the installation cavity and between the power coil and the semiconductor, and the bracket is connected to the power coil, the semiconductor, the circuit board and the shell.

5. The wireless charging device according to claim 4, characterized in that: A heat-conducting adhesive is provided between the bracket and the semiconductor; And / or, a thermal conductive adhesive is provided between the semiconductor and the heat sink.

6. The wireless charging device according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing connected to each other, wherein the installation cavity is defined between the upper housing and the lower housing, and the upper housing is arranged on a side of the circuit board facing the power coil.

7. The wireless charging device according to claim 6, characterized in that: The upper housing has a groove on one side facing away from the circuit board, and the bottom wall of the groove has an opening. The wireless charging device further includes: A filter plate is disposed in the groove, and the filter plate is electrically connected to the circuit board and the power coil.

8. The wireless charging device according to claim 7, characterized in that: Also includes: The temperature sensor is arranged on the filter board and connected to the filter board.

9. The wireless charging device according to claim 1, characterized in that: Also includes: A heat-insulating component is disposed between the hole wall of the first through hole and the heat exchanger assembly.

10. A vehicle, characterized in that: Comprising a wireless charging device according to any one of claims 1-9.

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