Integrated receiving device and wireless charging device

Abstract

The utility model belongs to the technical field of wireless charging, and particularly relates to an integrated receiving device and a wireless charging device. Wherein the integrated receiving device comprises a shell assembly, a receiving coil assembly and a receiving circuit board, and the receiving coil assembly comprises a receiving coil and a magnetic core; the housing assembly comprises: an upper cover plate having a hollow area inside, in which a receiving coil assembly and a receiving circuit board are installed; the heat dissipation device comprises a heat dissipation piece and a heat dissipation fan, the heat dissipation piece is connected with the upper cover plate and seals the hollow area, the lower surface of the heat dissipation piece is provided with a plurality of heat dissipation teeth and a plane area, and the heat dissipation fan is installed in the plane area; the receiving coil assembly further comprises a coil partition plate arranged between the receiving coil and the magnetic core. The magnetic core partition plate is arranged between the magnetic core and the heat dissipation piece, and a first gap is formed between the magnetic core partition plate and the heat dissipation piece. According to the utility model, the integrated design is realized, the reasonable heat dissipation design ensures that the whole device has excellent heat dissipation performance, and internal devices of the device are prevented from working in a high-temperature environment.

Description

Technical Field

[0001] This utility model belongs to the field of wireless charging technology, specifically relating to an integrated receiving device and a wireless charging device. Background Technology

[0002] Traditional wired charging methods typically have the following problems:

[0003] 1. Charging cables are required. In some situations, charging cables may be worn, tangled, short-circuited, or damaged, which may lead to safety hazards.

[0004] 2. Users may forget to bring their charging cable, causing inconvenience.

[0005] 3. In some spaces with limited space, the presence of charging cables may take up space and affect the cleanliness and aesthetics of the environment.

[0006] 4. Traditional wired charging methods may encounter problems such as poor contact during the charging process, which affects charging efficiency.

[0007] 5. In traditional wired charging, the resistance of the charging cable leads to a certain amount of energy loss.

[0008] 6. Traditional charging methods require accessories such as charging cables and chargers, which not only increase costs but are also prone to damage or loss.

[0009] Therefore, wireless charging technology was developed, which can avoid most of the problems of the wired charging method.

[0010] The heat dissipation problem at the receiver end of existing wireless charging devices is a significant research area in wireless charging technology. Wireless charging technology uses electromagnetic induction to transfer electrical energy from the transmitting coil to the receiving coil. During this process, electromagnetic losses in the coil cause power dissipation, generating heat. As wireless charging power increases, the heat generated at the receiver end also increases accordingly, making the heat dissipation problem more prominent. Furthermore, to meet the requirements of portability and aesthetics, wireless charging devices are becoming increasingly smaller, resulting in limited internal space and hindering heat dissipation. The heat dissipation problem at the receiver end has the following serious consequences:

[0011] 1. Reduced charging efficiency: High temperatures can affect the operational stability of electronic components, leading to a decrease in charging efficiency.

[0012] 2. Shortened device lifespan: Excessively high operating temperatures will accelerate the aging of electronic components and shorten their lifespan.

[0013] 3. Poor user experience: Excessive surface temperature of the device can affect the feel and may even cause discomfort.

[0014] 4. Safety hazards: Overheating may cause problems such as expansion and leakage of energy storage batteries, and in severe cases, it may even cause fire or explosion. Utility Model Content

[0015] This invention addresses the technical problem of heat dissipation in the receiver of wireless charging devices, and aims to provide an integrated receiver and wireless charging device.

[0016] To solve the aforementioned technical problems, the first aspect of this utility model provides an integrated receiving device, which includes a housing assembly, a receiving coil assembly, and a receiving circuit board, wherein the receiving coil assembly includes a receiving coil and a magnetic core.

[0017] The housing assembly includes:

[0018] The upper cover plate has a hollow area with an open bottom inside, and the receiving coil assembly and the receiving circuit board are installed in the hollow area;

[0019] A heat dissipation device, comprising a heat dissipation component and a cooling fan, wherein the heat dissipation component is located below the upper cover plate, the heat dissipation component is connected to the upper cover plate and seals the hollow area, the lower surface of the heat dissipation component has a plurality of heat dissipation teeth and a planar area, a heat dissipation air duct is formed between adjacent heat dissipation teeth, and the cooling fan is installed in the planar area;

[0020] The receiving coil assembly further includes:

[0021] A coil separator is disposed between the receiving coil and the magnetic core;

[0022] A magnetic core separator is disposed between the magnetic core and the heat sink, and forms a first gap between the magnetic core and the heat sink.

[0023] Optionally, in the integrated receiving device as described above, the first inner surface of the upper cover plate is disposed facing the upper surface of the heat sink, the lower surface of the side wall of the upper cover plate is provided with an upper cover plate groove, a first sealing ring is placed in the upper cover plate groove, and the lower surface of the side wall of the upper cover plate is detachably and sealingly connected to the upper surface of the heat sink.

[0024] Optionally, in the integrated receiving device described above, the heat sink is a heat sink made of aluminum.

[0025] Optionally, in the integrated receiving device as described above, the heat sink is provided with a plurality of fixing ears around its perimeter, and the fixing ears are provided with fixing through holes for detachable connection with the client mobile device.

[0026] Optionally, in the integrated receiving device as described above, the receiving circuit board is located within the first gap, and the lower surface of the receiving circuit board and the upper surface of the heat sink are arranged facing each other to form a second gap.

[0027] Optionally, in the integrated receiving device as described above, the second gap between the receiving circuit board and the heat sink is filled with thermally conductive adhesive.

[0028] Optionally, in the integrated receiving device as described above, the receiving circuit board is fixed to the heat sink via a fixing member through a circuit board fixing hole.

[0029] Optionally, in the integrated receiving device as described above, the upper surface of the heat sink has a heat dissipation protrusion, the heat dissipation protrusion is disposed opposite to the heat dissipation element on the receiving circuit board, and the heat dissipation element on the lower surface of the receiving circuit board is in contact with the heat dissipation protrusion through thermally conductive adhesive.

[0030] Optionally, in the integrated receiving device as described above, the planar area is provided with one or more mounting holes, one of the mounting holes being fitted with a vent valve, and / or another of the mounting holes being fitted with an antenna.

[0031] Optionally, in the integrated receiving device as described above, the lower surface of the magnetic core partition is connected to the lower surface of the heat sink via a fastener.

[0032] Optionally, in the integrated receiving device as described above, a plurality of partition protrusions are provided around the upper surface of the magnetic core partition, so that a receiving space is formed on the upper surface of the magnetic core partition, and the receiving coil, the coil partition and the magnetic core are located in the receiving space.

[0033] Optionally, in the integrated receiving device as described above, a thermally conductive sponge is provided between the magnetic core partition and the magnetic core.

[0034] Optionally, in the integrated receiving device described above, both the coil partition and the magnetic core partition are insulating partitions made of insulating material.

[0035] Optionally, in the integrated receiving device as described above, the housing assembly further includes:

[0036] An output cable is installed between the upper cover and the heat sink. One end of the output cable is connected to the receiving circuit board, and the other end of the output cable extends out of the sealed space formed by the upper cover and the heat sink.

[0037] Optionally, in the integrated receiving device as described above, the upper cover plate has a semi-circular slot at the contact point with the heat sink, and the heat sink has another semi-circular slot at the corresponding position. The semi-circular slots of the upper cover plate and the heat sink are combined to form a circular slot.

[0038] The output cable is fitted with a second sealing ring, which is installed inside the circular slot, and the output cable passes through the circular slot.

[0039] To address the aforementioned technical problems, a second aspect of this utility model provides a wireless charging device, which includes a transmitter converter and a receiver converter. The receiver converter adopts an integrated receiver device provided in the first aspect of this utility model.

[0040] The positive and progressive effects of this utility model are as follows:

[0041] 1. This utility model provides a relatively sealed working environment for the receiving coil assembly and receiving circuit board through the housing assembly, ensuring the waterproof rating of the entire device. This utility model achieves an integrated design with a compact installation method that saves overall installation space. At the same time, the reasonable heat dissipation and airflow design ensures that the entire device has excellent heat dissipation performance, preventing the internal components from operating in a high-temperature environment.

[0042] 2. This utility model provides insulation between the magnetic core and the receiving coil by setting a coil separator, and also provides a controllable gap between the magnetic core and the receiving coil.

[0043] This utility model incorporates a magnetic core partition to accommodate the receiving coil, coil partition, and magnetic core. The magnetic core partition serves to limit the position of the receiving coil assembly, bear weight, and provide a certain degree of insulation between the receiving coil assembly and the circuit board.

[0044] 3. This utility model adopts a sealed connection method at the connection between the output cable and the housing assembly, which further ensures the waterproof performance of the device. Attached Figure Description

[0045] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0046] Figure 1This is a schematic diagram of the integrated receiving device of this utility model;

[0047] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0048] Figure 3 for Figure 1 A schematic diagram of the exploded structure;

[0049] Figure 4 for Figure 3 Another perspective illustration;

[0050] Figure 5 This is a schematic diagram of a heat sink component according to the present invention;

[0051] Figure 6 for Figure 5 Another perspective illustration;

[0052] Figure 7 This is a schematic diagram of the structure of the wireless charging device of this utility model. Detailed Implementation

[0053] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0054] It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0055] In the description of this utility model, it should be noted that the directional terms such as "outer side", "middle section", "inner", "outer" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. They should not be construed as limiting the specific protection scope of this utility model.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0057] Reference Figures 1 to 6 This utility model provides an integrated receiving device 1, which is applied in a wireless charging device and is used as a receiver converter of the wireless charging device.

[0058] The integrated receiving device 1 includes a housing assembly, a receiving coil assembly, and a receiving circuit board 30. The housing assembly includes a top cover 11 and a heat dissipation device, which includes a heat sink 12 and a cooling fan 13. The receiving coil assembly includes a receiving coil 21, a coil separator 22, a magnetic core 23, and a magnetic core separator 24.

[0059] The upper cover 11 has a hollow area with an open bottom, in which the receiving coil assembly and the receiving circuit board 30 are installed.

[0060] The heat sink 12 is located below the upper cover plate 11. The heat sink 12 is connected to the upper cover plate 11 and seals the hollow area. In other words, the heat sink 12 seals the open hollow area below the upper cover plate 11. The lower surface S12b of the heat sink 12 has several heat dissipation teeth 121 and a planar area 122. A heat dissipation channel is formed between adjacent heat dissipation teeth 121, and a cooling fan 13 is installed in the planar area 122. During charging, the heat loss generated by the integrated receiving device 1 can be blown out along the heat dissipation channel by the output airflow of the cooling fan 13.

[0061] This invention provides a relatively sealed working environment for the receiving coil assembly and receiving circuit board through the housing assembly, ensuring the waterproof rating of the entire device. This invention achieves an integrated design with a compact installation method, saving overall installation space. At the same time, the reasonable heat dissipation and airflow design ensures excellent heat dissipation performance of the entire device.

[0062] A coil separator 22 is disposed between the receiving coil 21 and the magnetic core 23. By setting the coil separator 22, a certain degree of insulation is achieved between the magnetic core 23 and the receiving coil 21, and a controllable gap is created between the magnetic core 23 and the receiving coil 21.

[0063] A magnetic core separator 24 is disposed between the magnetic core 23 and the heat sink 12, forming a first gap between the magnetic core separator 24 and the heat sink 12. By providing the magnetic core separator 24, the receiving coil 21, the coil separator 22 and the magnetic core 23 are accommodated. The magnetic core separator 24 has the functions of limiting the receiving coil assembly, bearing weight and providing a certain degree of insulation between the receiving coil assembly and the receiving circuit board 30.

[0064] In some embodiments, refer to Figures 2 to 4The first inner surface S11a of the upper cover plate 11 faces the upper surface S12a of the heat sink 12. The lower sidewall surface S11b of the upper cover plate 11 has a groove, and a first sealing ring 14 is placed within this groove. The first sealing ring 14 achieves a sealed connection between the lower sidewall surface of the upper cover plate 11 and the upper surface of the heat sink 12. The lower sidewall surface S11b of the upper cover plate 11 and the upper surface S12a of the heat sink 12 are detachably fixed using screws or other fasteners. This achieves a detachable sealed connection between the upper cover plate 11 and the heat sink 12, facilitating maintenance while ensuring the waterproof rating of the entire housing assembly.

[0065] In some embodiments, the heat sink 12 is a heat sink made of aluminum material. This allows the heat sink 12 to be made of a material with high thermal conductivity, thereby achieving better heat dissipation.

[0066] In some embodiments, refer to Figures 2 to 6 The heat sink 12 has several fixing ears 123 around its perimeter, and each fixing ear 123 has a fixing through hole. The client mobile device is detachably fixed by fasteners such as screws passing through the fixing through holes.

[0067] The fixing through hole is preferably a cylindrical through hole located in the middle of the fixing lug 123.

[0068] In some embodiments, refer to Figure 2 and Figure 4 The receiving circuit board 30 is located within the first gap, and the lower surface S30b of the receiving circuit board 30 and the upper surface S12a of the heat sink 12 are arranged facing each other to form a second gap.

[0069] In some embodiments, the second gap between the receiving circuit board 30 and the heat sink 12 is filled with thermally conductive adhesive. The thermally conductive adhesive provides insulation between the receiving circuit board 30 and the heat sink 12 and improves the thermal conductivity of the second gap.

[0070] In some embodiments, the receiving circuit board 30 is fixed to the heat sink 12 via a fixing member through a circuit board fixing hole.

[0071] Specifically, the receiving circuit board 30 can be detachably fixed to the upper surface S12a of the heat sink 12 by means of fasteners such as screws, and / or the receiving circuit board 30 can be detachably fixed to the upper surface S12a of the heat sink 12 by means of four fixing holes around its perimeter and fasteners such as studs, with the receiving circuit board 30 and the studs installed in the first gap.

[0072] In some embodiments, the upper surface S12a of the heat sink 12 has a heat dissipation protrusion 124, which is disposed opposite to the heat dissipation element on the receiving circuit board 30. The heat dissipation element on the lower surface S30b of the receiving circuit board 30 is in contact with the heat dissipation protrusion 124 through thermally conductive adhesive. The heat dissipation protrusion 124 is used to optimize the heat dissipation of the heat dissipation element on the receiving circuit board 30.

[0073] In some embodiments, the cooling fan 13 is mounted on the planar area 122 by means of fasteners such as screws.

[0074] In some embodiments, the planar area 122 is provided with a mounting hole, and a vent valve 15 is installed on the mounting hole.

[0075] Specifically, the vent valve 15 can be installed on the planar area 122 via its own threads.

[0076] like Figure 4 As shown, the planar area 122 of the lower surface S12b of the heat sink 12 has two locations: one is equipped with a cooling fan 13, and the other is equipped with a vent valve 15.

[0077] Of course, the planar region 122 of the lower surface S12b of the heat sink 12 can be only one or several places, which can be determined according to actual needs.

[0078] In some embodiments, the planar region 122 is provided with mounting holes, and an antenna is mounted on the mounting holes.

[0079] Of course, other optional components can also be installed in the planar area 122 through the mounting holes.

[0080] In some embodiments, the receiving coil 21 is mounted on the upper surface S22a of the coil partition 22 by adhesive, and the magnetic core 23 is mounted on the lower surface S22b of the coil partition 22 by adhesive.

[0081] In some embodiments, the magnetic core separator 24 and the coil separator 22 are detachably fixed together by fasteners such as screws.

[0082] In some embodiments, the upper surface S24a of the magnetic core separator 24 is in contact with the magnetic core 23 through a thermally conductive sponge, thereby optimizing the heat conduction effect of the receiving coil assembly.

[0083] In some embodiments, the lower surface S24b of the magnetic core separator 24 is connected to the lower surface S12b of the heat sink 12 by means of fasteners such as studs.

[0084] In some embodiments, refer to Figures 2 to 4The upper surface S24a of the magnetic core partition 24 is provided with several partition protrusions 241, which form a receiving space on the upper surface of the magnetic core partition 24, and the receiving coil 21, the coil partition 22 and the magnetic core 23 are located in the receiving space.

[0085] In some embodiments, the coil separator 22 and the magnetic core separator 24 are both insulating separators made of insulating material.

[0086] In some embodiments, the housing assembly further includes an output cable 16, which is installed between the upper cover plate 11 and the heat sink 12. One end of the output cable 16 is connected to the receiving circuit board 30, and the other end of the output cable 16 extends out of the sealed space formed by the upper cover plate 11 and the heat sink 12.

[0087] Specifically, one end of the output cable 16 is detachably fixed to the receiving circuit board 30 by means of a fastener such as screws. The other end of the output cable 16 is used to connect to the client's battery.

[0088] In some embodiments, refer to Figure 3 and Figure 4 The upper cover plate 11 has a semi-circular slot 111 at the contact point with the heat sink 12. The heat sink 12 has another semi-circular slot 125 at the corresponding position. The semi-circular slot 111 of the upper cover plate 11 and the semi-circular slot 125 of the heat sink 12 are combined to form a circular slot. The output cable 16 is fitted with a second sealing ring 17, which is installed inside the circular slot, and the output cable 16 passes through the circular slot.

[0089] In this embodiment, a sealed connection is used at the connection between the output cable 16 and the housing assembly, which further ensures the waterproof performance of the device.

[0090] This utility model embodiment also provides a wireless charging device, see reference. Figure 7 The wireless charging device includes a transmitter converter 2 and a receiver converter. The receiver converter adopts the integrated receiver device 1 provided in the above embodiments of this utility model.

[0091] The integrated receiver 1 is detachably fixed to the client's mobile device. Simultaneously, the output cable 16 of the integrated receiver 1 is connected to the client's battery.

[0092] Of course, the transmitter converter 2 is a wireless transmitter that works in conjunction with the integrated receiver 1. It is typically equipped with a transmitter coil and other electronic modules. The transmitter converter 2 can convert external electrical energy into power for the transmitter coil and transmit it to the receiver coil 21. The receiver circuit board 30 can process the energy received by the receiver coil 21 from the transmitter coil and perform status judgment and processing during the charging process to achieve the purpose of charging the client's battery.

[0093] When the upper cover 11 of the integrated receiver 1 moves to the target area of ​​the transmitter converter 2, for example, when the upper cover 11 is parallel to the transmitter converter 2 at a preset distance, the client battery is wirelessly charged.

[0094] In this utility model, the transmitting converter 2 and the receiving coil 21, magnetic core 23 and receiving circuit board 30 in the integrated receiving device 1 all adopt existing technology.

[0095] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. An integrated receiving device, comprising a housing assembly, a receiving coil assembly and a receiving circuit board, the receiving coil assembly comprising a receiving coil and a magnetic core; characterized in that the housing assembly comprising: an upper cover plate having a hollow region with an open bottom inside, the receiving coil assembly and the receiving circuit board being installed in the hollow region; a heat dissipation device comprising a heat dissipation member and a heat dissipation fan, the heat dissipation member being located below the upper cover plate, the heat dissipation member being connected with the upper cover plate and sealing the hollow region, the lower surface of the heat dissipation member having a plurality of heat dissipation teeth and a flat region, the heat dissipation fan being installed on the flat region; the receiving coil assembly further comprising: a coil partition plate arranged between the receiving coil and the magnetic core; a magnetic core partition plate arranged between the magnetic core and the heat dissipation member and forming a first gap with the heat dissipation member.

2. The integrated receiving apparatus of claim 1, wherein the first inner surface of the upper cover plate and the upper surface of the heat dissipation member are arranged opposite to each other, the lower surface of the side wall of the upper cover plate is provided with an upper cover plate groove, a first sealing ring is placed in the upper cover plate groove, and the lower surface of the side wall of the upper cover plate and the upper surface of the heat dissipation member are detachably sealed and connected.

3. The integrated receiving apparatus of claim 1, wherein the heat dissipation member is a heat dissipation aluminum member made of aluminum material; and / or, a plurality of fixing lugs are arranged around the heat dissipation member, and a fixing through hole for detachable connection with a client mobile device is arranged on the fixing lug.

4. The integrated receiving apparatus of claim 1, wherein the receiving circuit board is located in the first gap, and the lower surface of the receiving circuit board and the upper surface of the heat dissipation member are arranged opposite to each other to form a second gap.

5. The integrated receiving apparatus of claim 4, wherein the second gap between the receiving circuit board and the heat dissipation member is filled with heat conductive glue; and / or, the receiving circuit board is fixed to the heat dissipation member through a circuit board fixing hole and a fixing member; and / or, the upper surface of the heat dissipation member has a heat dissipation protrusion, the heat dissipation protrusion is arranged opposite to a heat dissipation element on the receiving circuit board, and the heat dissipation element on the lower surface of the receiving circuit board is in contact with the heat dissipation protrusion through heat conductive glue.

6. The integrated receiving apparatus of claim 1, wherein the flat region is provided with one or a plurality of mounting holes, one of the mounting holes is provided with a breathable valve, and / or another of the mounting holes is provided with an antenna.

7. The integrated receiving apparatus of claim 1, wherein the lower surface of the magnetic core partition plate is connected to the lower surface of the heat dissipation member through a fixing member; and / or, a plurality of partition plate protrusions are arranged around the upper surface of the magnetic core partition plate, so that an accommodation space is formed on the upper surface of the magnetic core partition plate, and the receiving coil, the coil partition plate and the magnetic core are located in the accommodation space; and / or, heat conductive sponge is arranged between the magnetic core partition plate and the magnetic core; and / or, the coil partition plate and the magnetic core partition plate are both made of insulating material.

8. The integrated receiving device according to any one of claims 1 to 7, wherein the housing assembly further comprising: an output cable installed between the upper cover plate and the heat dissipation member, one end of the output cable being connected to the receiving circuit board, and the other end of the output cable extending out of the sealed space formed by the upper cover plate and the heat dissipation member.

9. The integrated receiving apparatus of claim 8, wherein, The upper cover plate is provided with a semicircular slot hole at the position in contact with the heat dissipation member, and the heat dissipation member is provided with another semicircular slot hole at the corresponding position, and the semicircular slot hole of the upper cover plate and the semicircular slot hole of the heat dissipation member are combined into a circular slot hole; The output cable is externally sleeved with a second sealing ring, the second sealing ring is installed in the circular slot hole, and the output cable passes through the circular slot hole.

10. A wireless charging device comprising a transmitting end transformer and a receiving end transformer, characterized in that, The receiving end converter adopts the integrated receiving device in any one of claims 1 to 9.

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