Vehicle-mounted wireless fast charging device

Abstract

The invention discloses a vehicle-mounted wireless fast charging device which comprises the components of a housing assembly which comprises an upper housing and a lower housing, an accommodating cavity is arranged between the upper housing and the lower housing, and the upper housing is provided with a plane for placing a mobile phone; the charging assembly is arranged in the accommodating cavity and is used for wirelessly charging the mobile phone; and the heat dissipation assembly comprises a heat dissipation fan installed in the accommodating cavity, a first flow guide channel facing the mobile phone and a second flow guide channel facing the charging assembly. The vehicle-mounted wireless fast charging device has the beneficial effects that through reasonable structural design and heat dissipation layout, the problems that an existing vehicle-mounted wireless charging device is limited in heat dissipation area, low in heat dissipation efficiency, blind in heat management and the like are effectively solved, efficient heat dissipation can be carried out on a mobile phone and a charging assembly at the same time in a high-power fast charging scene, and the service life of the mobile phone and the charging assembly is prolonged. And the use experience of the user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted charging, and in particular to a vehicle-mounted wireless fast charging device. Background Art

[0002] With the increasing popularity of in-vehicle wireless charging technology, the heat dissipation problem of high-power wireless fast charging in vehicle applications has become increasingly prominent. Currently, mainstream in-vehicle wireless charging devices mostly use a single-duct cooling solution. Its core structure is to guide the airflow generated by the cooling fan to the circuit board (PCB) area through a single duct. However, this solution has the following significant drawbacks:

[0003] Limited heat dissipation area: The single air duct design can only cover a local area of ​​the PCB and cannot effectively dissipate heat from the core heat-generating components of the wireless charging module (such as power devices and coils) and the battery of the charged mobile phone at the same time;

[0004] Inefficient heat dissipation: During continuous high-power fast charging, both the PCB and the phone battery generate high temperatures simultaneously. Single-duct airflow cannot meet both heat dissipation requirements, causing device temperature to accumulate and rise, triggering the overheating protection mechanism and interrupting the charging process.

[0005] Thermal management blind spot: As a secondary heat source, the heat dissipation needs of mobile phone batteries are often overlooked. Existing technologies lack targeted heat dissipation paths, exacerbating the overall temperature rise of the device.

[0006] Therefore, there is an urgent need for an in-vehicle wireless fast charging heat dissipation solution that can simultaneously solve the heat dissipation of PCB and mobile phone batteries and improve the utilization efficiency of the heat dissipation area. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a vehicle-mounted wireless fast charging device with multiple heat dissipation channels, which can simultaneously cool the core components of the mobile phone, PCB board and charging module. It utilizes a dual-duct diversion layout to achieve heat dissipation of the PCB board and mobile phone battery through a fan diversion, optimizes the heat dissipation structure, and improves the heat dissipation efficiency.

[0008] Specifically, the present invention discloses a vehicle-mounted wireless fast charging device, comprising:

[0009] The housing assembly includes an upper housing and a lower housing, wherein a receiving cavity is provided between the upper housing and the lower housing, and the upper housing is provided with a flat surface for placing a mobile phone;

[0010] A charging assembly is provided in the accommodating cavity and is used for wirelessly charging the mobile phone;

[0011] The heat dissipation component includes a heat dissipation fan installed in the accommodating cavity, a first guide channel facing the mobile phone, and a second guide channel facing the charging component.

[0012] The benefit of adopting the above technical solution is that this vehicle-mounted wireless fast charging device effectively solves the problems of limited heat dissipation area, low heat dissipation efficiency and thermal management blind spots of existing vehicle-mounted wireless charging devices through reasonable structural design and heat dissipation layout. It can efficiently dissipate heat for mobile phones and charging components at the same time in high-power fast charging scenarios, thereby improving the user experience.

[0013] Furthermore, the charging component includes: a charging coil and a circuit board, and a heat sink is provided between the charging coil and the circuit board.

[0014] The benefit of adopting the above technical solution is that a charging coil is provided to realize wireless charging, and the heat generated by the charging coil and the circuit board can be effectively reduced through the heat sink, thereby improving the stability and service life of the charging component.

[0015] Furthermore, a shielding plate is provided between the heat sink and the charging coil.

[0016] The benefit of adopting the above technical solution is that the shielding plate is provided to reduce the electromagnetic interference generated by the charging coil and ensure the normal operation of the vehicle system.

[0017] Furthermore, the lower shell is provided with a heat dissipation cavity, the heat dissipation cavity is provided with an installation cavity for installing the heat dissipation fan, the bottom of the installation cavity is provided with multiple air inlets, a fan baffle is installed on the side of the heat dissipation fan, and an air outlet is provided between the fan baffle and the installation cavity.

[0018] The advantages of adopting this technical solution are that the cooling fan dissipates heat, and the air inlet allows outside air to enter the installation cavity, providing a sufficient air source for the cooling fan and ensuring effective heat dissipation. Furthermore, the presence of the heat dissipation cavity provides a relatively independent space for the cooling fan, reducing the impact of the heat dissipation process on other parts of the device.

[0019] Furthermore, the first guide channel and the second guide channel are arranged on the upper shell, and a plurality of partitions are provided in the installation cavity. The partitions divide the air outlet into a plurality of channels connected to the first guide channel and the second guide channel.

[0020] The benefit of adopting the above technical solution is that the function of the partition plate is to reasonably distribute the airflow generated by the cooling fan. The partition plate divides the air outlet into multiple channels, which are connected to the first guide channel and the second guide channel respectively, so that the airflow can flow more accurately to the parts that need heat dissipation. At the same time, the setting of the partition plate can also make the airflow distribution more uniform, reduce the phenomenon of local overheating, and further optimize the heat dissipation performance of the entire in-vehicle wireless fast charging device, so that the device can work stably and efficiently even in high-power fast charging scenarios, providing users with a better user experience.

[0021] Furthermore, the second guide channel connects the installation cavity and the gap between the charging assembly, with the outlet facing the charging assembly, and the outlet of the first guide channel faces the plane on which the mobile phone is placed.

[0022] The benefits of this technical solution lie in that the first channel directs airflow toward the surface on which the phone is placed, promptly removing heat generated during charging and preventing overheating that could affect charging efficiency and lifespan. The second channel directs airflow toward the upper side of the charging assembly, directly affecting heat-generating components like the charging coil and circuit board, rapidly reducing their temperature. During sustained, high-power fast charging, the charging assembly generates significant heat. If not dissipated promptly, this can affect charging efficiency and even damage the assembly. Precisely directing the cooling airflow toward the charging assembly through the second channel effectively addresses this issue, ensuring stable operation. Furthermore, the layout of the first and second channels, each targeted at the phone and the charging assembly, allows for precise heat dissipation from different heat sources, significantly improving heat dissipation efficiency. Furthermore, this heat dissipation approach reduces the frequency of overheat protection mechanisms triggered by heat accumulation, preventing interruptions in charging and ensuring a smoother charging process, further enhancing the user experience. Furthermore, this dual-channel design offers excellent adaptability, allowing for flexible adjustment of airflow distribution based on the heat characteristics of different phones and charging components to achieve optimal heat dissipation. In actual applications, no matter how the heat level of the mobile phone changes, or the charging components work at different power levels, the device can ensure that the entire in-vehicle wireless fast charging device operates stably within a safe temperature range through reasonable airflow distribution.

[0023] Furthermore, the number of the first flow guiding channels is 3, the number of the second flow guiding channels is 2, and the first flow guiding channels and the second flow guiding channels are alternately arranged.

[0024] The benefit of adopting the above technical solution lies in that the number of channels is set to take into account the heat dissipation requirements of the mobile phone and the charging component. The three first guide channels can provide sufficient airflow to cover the surface on which the mobile phone is placed, ensuring that the mobile phone can be effectively cooled. The two second guide channels can meet the heat dissipation requirements of the charging component and accurately guide the airflow to the key heat-generating parts of the charging component. The alternating arrangement makes the airflow distribution more uniform and reasonable, avoiding the airflow turbulence and heat dissipation dead spots that may be caused by the centralized arrangement of a single type of guide channel. This layout can create a relatively balanced thermal environment for the entire device during the heat dissipation process, ensuring the charging safety and performance of the mobile phone while maintaining the stable operation of the charging component. At the same time, this combination of number and layout also has good operability and economy in actual production. While meeting the heat dissipation requirements, it can effectively control production costs and improve the market competitiveness of the product.

[0025] Furthermore, a plurality of sensing elements are attached to the charging coil for sensing the temperature of the charging coil.

[0026] The benefit of this technical solution is that by setting up a sensor to sense the temperature during charging, the heating status of the charging coil can be monitored in real time. If the charging coil temperature is too high, the sensor can transmit a temperature signal to the device's control system, thus enabling temperature monitoring of the charging coil.

[0027] Furthermore, the lower shell is provided with a wiring port, and slots are provided on both sides of the wiring port. A plurality of guide grooves are provided on the side of the wiring port, and a plurality of connection holes are provided on the bottom.

[0028] The benefit of adopting the above technical solution is that the provision of the wiring port facilitates the installation and fixation of the wiring harness connector, ensures the stability and reliability of the wiring harness connection, and effectively prevents the wiring harness from falling off.

[0029] Furthermore, a baffle is provided at the outlet of the second guide channel, and the interior of the baffle has an arc-shaped transition surface, and the outlet formed thereby faces the charging assembly.

[0030] The benefit of this technical solution lies in the fact that the curved surface at the bottom of the baffle allows airflow to flow toward the charging assembly at a more appropriate angle and direction, ensuring more even coverage of the critical heat-generating areas of the charging assembly, thus preventing concentrated airflow in one area while leaving other areas with insufficient heat dissipation. Furthermore, the curved surface reduces resistance to airflow as it exits the second guide channel, ensuring smoother airflow and further improving heat dissipation efficiency for the charging assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0032] Figure 1 This is the cross section of the vehicle-mounted wireless fast charging device at point A of the present invention. Figure 1

[0033] Figure 2 This is the cross section of the vehicle-mounted wireless fast charging device at point B of the present invention Figure 2

[0034] Figure 3 This is a top view of the vehicle-mounted wireless fast charging device of the present invention

[0035] Figure 4 This is the overall axonometric view of the vehicle-mounted wireless fast charging device of the present invention

[0036] Figure 5 This is a schematic diagram of the present invention without the upper shell structure

[0037] Figure 6 This is a schematic diagram of the lower shell structure of the present invention

[0038] Figure 7 This is a schematic diagram of the lower shell structure of the present invention

[0039] The reference numerals in the accompanying drawings are as follows:

[0040] Upper shell 1; main air outlet 11; plane 12; lower shell 2; mounting cavity 21; air inlet 22; fan baffle 23; partition plate 24; wiring port 25; slot 26; guide slot 27; connection hole 28; charging assembly 3; charging coil 31; circuit board 32; heat sink 33; shielding plate 34; cooling fan 4; first guide channel 5; second guide channel 6; baffle 61; induction part 7. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the accompanying drawings.

[0042] like Figure 1-4 As shown, the present invention discloses a vehicle-mounted wireless fast charging device, comprising:

[0043] The housing assembly includes an upper housing 1 and a lower housing 2, wherein a receiving cavity is provided between the upper housing 1 and the lower housing 2, and the upper housing 1 is provided with a flat surface 12 for placing a mobile phone;

[0044] The charging component 3 is arranged in the accommodating cavity and is used to wirelessly charge the mobile phone;

[0045] The heat dissipation component includes a heat dissipation fan 4 installed in the accommodating cavity, a first guide channel 5 facing the mobile phone, and a second guide channel 6 facing the charging component 3.

[0046] The benefit of adopting the above technical solution is that this vehicle-mounted wireless fast charging device effectively solves the problems of limited heat dissipation area, low heat dissipation efficiency and thermal management blind spots of existing vehicle-mounted wireless charging devices through reasonable structural design and heat dissipation layout. It can efficiently dissipate heat for mobile phones and charging components 3 at the same time in high-power fast charging scenarios, thereby improving the user experience.

[0047] Furthermore, the charging assembly 3 includes a charging coil 31 and a circuit board 32. A heat sink 33 is disposed between the charging coil 31 and the circuit board 32. The charging coil 31 is fixedly mounted on the upper side of the heat sink 33, and there may be three of them. A shielding plate 34 is disposed between the heat sink 33 and the circuit board 32. The shielding plate 34 is attached to the lower side of the charging coil 31 and may be fixed with thermally conductive adhesive. Its main function is to guide magnetic flux, improve coupling efficiency, reduce electromagnetic interference, and protect other electronic components from magnetic fields. The heat sink 33 is fixedly mounted on the lower side of the shielding plate 34 to dissipate heat. The circuit board 32 is fixedly mounted within the housing assembly, located below the heat sink 33.

[0048] A charging coil 31 is provided to realize wireless charging, and the heat sink 33 can effectively reduce the heat generated by the charging coil 31 and the circuit board 32, thereby improving the stability and service life of the charging component 3.

[0049] Furthermore, the lower shell 2 is provided with a heat dissipation cavity, and a mounting cavity 21 for mounting a heat dissipation fan 4 is provided in the heat dissipation cavity. A plurality of mounting posts are provided in the mounting cavity 21, and the mounting posts play a supporting and positioning role. The heat dissipation fan 4 is fixed by the mounting posts. The heat dissipation fan 4 is conventionally set in this field and can be installed according to the needs of use. A plurality of air inlets 22 are provided at the bottom of the mounting cavity 21. The air inlets 22 are a plurality of circular through holes arranged in an array. A fan baffle 23 is installed on the side of the heat dissipation fan 4. There is an air outlet between the fan baffle 23 and the mounting cavity 21. The setting of the fan baffle 23 plays a role in drainage, and the air blown out by the heat dissipation fan 4 is introduced into the first guide channel and the second guide channel through the air outlet. The setting of the air inlet 22 allows outside air to enter the mounting cavity 21, providing a sufficient air source for the heat dissipation fan 4 and ensuring the heat dissipation effect. At the same time, the existence of the mounting cavity 21 provides a relatively independent space for the heat dissipation fan 4, reducing the impact on other parts of the device during the heat dissipation process.

[0050] Furthermore, the first guide channel 5 and the second guide channel 6 are provided on the upper shell 1 , and a plurality of partition plates 24 are provided in the installation cavity 21 . The partition plates 24 divide the air outlet into a plurality of channels that communicate with the first guide channel 5 and the second guide channel 6 .

[0051] The second guide channel 6 connects the installation cavity 21 and the gap between the charging component 3, and the outlet faces the charging component 3, guiding the wind blown out by the cooling fan 4 to between the circuit board 32 and the heat sink 33, thereby realizing heat dissipation of the circuit board 32 and the heat sink 33. A main air outlet 11 is provided at a position of the upper shell 1 away from the second guide channel, so that the air flow can be discharged from the shell to ensure air circulation.

[0052] The outlet of the first guiding channel 5 faces the plane 12 on which the mobile phone is placed, so as to promptly take away the heat generated by the mobile phone during the charging process, thereby preventing the charging efficiency and service life of the mobile phone from being affected by overheating.

[0053] The second guide channel 6 guides the airflow to the upper side of the charging component 3, and can directly act on the core heat-generating components such as the charging coil 31 and the circuit board 32 to quickly reduce their temperature. During the continuous high-power fast charging process, the charging component 3 will generate a large amount of heat. If it is not dissipated in time, it will affect the charging efficiency or even damage the charging component 3. By accurately guiding the heat dissipation airflow to the charging component 3 through the second guide channel 6, this problem can be effectively solved to ensure the stable operation of the charging component 3. At the same time, the layout of the first guide channel 5 and the second guide channel 6, which are respectively aimed at the mobile phone and the charging component 3, realizes the precise heat dissipation of different heat sources and greatly improves the heat dissipation efficiency. Moreover, this heat dissipation method can also reduce the activation frequency of the overheating protection mechanism triggered by heat accumulation, avoid interruptions in the charging process, make the charging process smoother, and further enhance the user experience. In addition, this dual guide channel design also has good adaptability and can flexibly adjust the airflow distribution according to the heating characteristics of different mobile phones and charging components 3 to achieve the best heat dissipation effect. In actual applications, no matter how the heat level of the mobile phone changes, or the charging component 3 works at different power levels, the device can ensure that the entire in-vehicle wireless fast charging device operates stably within a safe temperature range through reasonable airflow distribution.

[0054] Furthermore, there are three first guide channels 5 and two second guide channels 6, with the first and second guide channels 5 and 6 arranged alternately. This number arrangement takes into account the heat dissipation requirements of the mobile phone and the charging assembly 3. The three first guide channels 5 can provide sufficient airflow. The two second guide channels 6 can meet the heat dissipation requirements of the charging assembly 3, precisely directing the airflow to the key heat-generating areas of the charging assembly 3. This alternating arrangement ensures more uniform and reasonable airflow distribution, avoiding the airflow turbulence and heat dissipation dead spots that may result from the centralized arrangement of a single type of guide channel. This layout creates a relatively balanced thermal environment for the entire device during the heat dissipation process, ensuring both the charging safety and performance of the mobile phone and the stable operation of the charging assembly 3. Furthermore, this combination of number and layout is highly practical and economical in actual production. While meeting heat dissipation requirements, it can effectively control production costs and improve the product's market competitiveness.

[0055] Furthermore, the charging coil 31 is attached with multiple sensing elements 7 for sensing its temperature. These sensing elements 7 are thermistors. An NFC antenna is located around the charging coil 31. The charging coil 31, thermistor wiring, and the NFC antenna wiring are each connected to the circuit board 32. This allows for rapid identification of the temperature of the charging coil 31 and circuit board 32. By installing an MCU (single-chip microcontroller), the fan speed is dynamically adjusted based on the device's temperature, ensuring efficient heat dissipation while reducing noise and power consumption, enabling precise temperature monitoring of the charging coil 31. Upon receiving the signal, the MCU takes appropriate action according to a pre-set program. For example, it can adjust the power of the cooling fan 4 to increase airflow into the first and second airflow channels 5 and 6, enhancing heat dissipation. Alternatively, it can appropriately reduce the charging power to reduce heat generated by the charging coil 31, preventing damage to the charging coil 31 due to excessive temperatures and extending its service life. Furthermore, it prevents excessive temperatures from affecting other surrounding components, ensuring the stability and safety of the entire in-vehicle wireless fast charging device. Furthermore, this temperature monitoring mechanism based on sensor 7 provides users with temperature information during the charging process, giving them a more intuitive understanding of the charging status and further enhancing the user experience. Furthermore, sensor 7 utilizes a thermistor, which offers advantages such as high sensitivity and fast response. It can promptly and accurately sense temperature changes in the charging coil 31, providing reliable data support for the control system and ensuring stable and efficient operation of the entire device in a variety of complex operating environments.

[0056] In some embodiments, as Figure 6 As shown, the lower housing 2 is provided with a wiring port 25, with slots 26 on both sides, multiple guide slots 27 on the sides, and multiple connection holes 28 on the bottom. A wiring position is provided at a corresponding position on the circuit board 32. The wiring port 25 is used to fix to the wiring harness connector, which connects to the circuit board 32 to achieve functions such as signal transmission and power connection. When connected, the protrusions on both sides of the wiring harness connector enter the slots 26 for fixation, while the guide slots 27 serve as guides to avoid damage to the connector. The provision of the wiring port 25 facilitates the installation and fixation of the wiring harness connector, ensures the stability and reliability of the connector connection, and effectively prevents the wiring harness from falling off.

[0057] In some embodiments, Figure 7As shown, at the end outlet position of the second guide channel 6, a baffle 61 structure is specially designed and installed. The baffle 61 is tightly combined with the channel body through an integral molding process with the second guide channel 6. The inner upper side of the baffle 61 has a smoothly transitioned arc-shaped curved surface structure, which has an air outlet connected to the second guide channel 6. This arc-shaped surface design can effectively improve the flow characteristics of the fluid at the outlet, reduce turbulence and energy loss. The connection between the entire baffle 61 and the guide channel has a natural transition and no obvious seams, ensuring the integrity and sealing performance of the structure. This one-piece molding manufacturing process not only ensures the strength of the structure, but also avoids the risk of leakage due to loose connection parts.

[0058] For those skilled in the art, several variations and improvements can be made without departing from the inventive concept of the present invention, and all of these fall within the scope of protection of the present invention.

Claims

1. A vehicle-mounted wireless fast charging device, characterized in that: include: A housing assembly comprising an upper housing (1) and a lower housing (2), wherein a receiving cavity is provided between the upper housing (1) and the lower housing (2), and the upper housing (1) is provided with a plane (12) for placing a mobile phone; A charging assembly (3), arranged in the accommodating cavity, for wirelessly charging the mobile phone; The heat dissipation component comprises a heat dissipation fan (4) installed in the accommodating cavity, a first guide channel (5) facing the mobile phone, and a second guide channel (6) facing the charging component (3).

2. The vehicle-mounted wireless fast charging device according to claim 1, characterized in that: The charging assembly (3) comprises a charging coil (31) and a circuit board (32), wherein a heat sink (33) is provided between the charging coil (31) and the circuit board (32).

3. The vehicle-mounted wireless fast charging device according to claim 2, characterized in that: A shielding plate (34) is provided between the heat sink (33) and the charging coil (31).

4. The vehicle-mounted wireless fast charging device according to claim 1, characterized in that: The lower shell (2) is provided with a heat dissipation cavity, and a mounting cavity (21) for mounting the heat dissipation fan (4) is provided in the heat dissipation cavity. A plurality of air inlets (22) are provided at the bottom of the mounting cavity (21). A fan baffle (23) is installed on the side of the heat dissipation fan (4), and an air outlet is provided between the fan baffle (23) and the mounting cavity (21).

5. The vehicle-mounted wireless fast charging device according to claim 4, characterized in that: The first guide channel (5) and the second guide channel (6) are arranged on the upper shell (1), and a plurality of partition plates (24) are arranged in the installation cavity (21), and the partition plates (24) divide the air outlet into a plurality of channels that communicate with the first guide channel (5) and the second guide channel (6).

6. The vehicle-mounted wireless fast charging device according to claim 5, characterized in that: The second guide channel (6) is connected to the gap between the mounting cavity (21) and the charging assembly (3), with the outlet facing the charging assembly (3), and the outlet of the first guide channel (5) faces the plane on which the mobile phone is placed.

7. The vehicle-mounted wireless fast charging device according to claim 6, characterized in that: The number of the first flow guiding channels (5) is 3, the number of the second flow guiding channels (6) is 2, and the first flow guiding channels (5) and the second flow guiding channels (6) are arranged alternately.

8. The vehicle-mounted wireless fast charging device according to claim 2, characterized in that: A plurality of sensing elements (7) are attached to the charging coil (31) and are used to sense the temperature of the charging coil (31).

9. The vehicle-mounted wireless fast charging device according to claim 2, characterized in that: The lower shell (2) is provided with a wiring port (25), and slots (26) are provided on both sides of the wiring port (25). A plurality of guide slots (27) are provided on the side of the wiring port (25), and a plurality of connection holes (28) are provided on the bottom.

10. The vehicle-mounted wireless fast charging device according to claim 2, characterized in that: A baffle (61) is provided at the outlet of the second guide channel (6), and the interior of the baffle (61) has an arc-shaped transition surface, the outlet formed by which faces the charging assembly (3).

Images