A vehicle-mounted wireless fast charging device

Abstract

This utility model discloses an in-vehicle wireless fast charging device, comprising: a housing assembly including 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 has a flat surface for placing a mobile phone; a charging component disposed within the receiving cavity for wirelessly charging the mobile phone; and a heat dissipation component including a cooling fan installed within the receiving cavity, a first airflow channel facing the mobile phone, and a second airflow channel facing the charging component. The advantages of this utility model are that, through a reasonable structural design and heat dissipation layout, this in-vehicle wireless fast charging device effectively solves the problems of limited heat dissipation area, low heat dissipation efficiency, and thermal management blind spots in existing in-vehicle wireless charging devices. It can efficiently dissipate heat for both the mobile phone and the charging component simultaneously in high-power fast charging scenarios, improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of vehicle charging technology, specifically to a vehicle wireless fast charging device. Background Technology

[0002] With the widespread adoption of in-vehicle wireless charging technology, the heat dissipation problem of high-power wireless fast charging in vehicle applications has become increasingly prominent. Currently, most mainstream in-vehicle wireless charging devices employ a single-channel airflow cooling solution, whose core structure directs the airflow generated by the cooling fan to the circuit board (PCB) area through a single airflow channel. 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 mobile phone being charged at the same time.

[0004] Poor heat dissipation efficiency: In continuous high-power fast charging scenarios, the PCB and the mobile phone battery generate high temperatures simultaneously. The single airflow cannot meet the dual heat dissipation requirements, resulting in the accumulation and increase of device temperature, which in turn triggers the overheat protection mechanism and interrupts the charging process.

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

[0006] Therefore, there is an urgent need for a vehicle-mounted wireless fast charging heat dissipation solution that can simultaneously address the heat dissipation of the PCB and the mobile phone battery, and improve the utilization efficiency of the heat dissipation area. Utility Model Content

[0007] To address the aforementioned technical issues, this utility model provides an in-vehicle wireless fast charging device with multiple heat dissipation channels, simultaneously cooling the core components of the mobile phone, PCB board, and charging module. Utilizing a dual-channel airflow layout, a single fan guides the airflow to dissipate heat from the PCB board and mobile phone battery, optimizing the heat dissipation structure and improving heat dissipation efficiency.

[0008] Specifically, this utility model discloses an in-vehicle wireless fast charging device, comprising:

[0009] A 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 component, housed within the receiving cavity, is used for wireless charging of mobile phones;

[0011] The heat dissipation assembly includes a cooling fan installed within the housing cavity, a first airflow channel toward the mobile phone, and a second airflow channel toward the charging assembly.

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

[0013] Furthermore, the charging component includes a charging coil and a circuit board, with a heat sink disposed between the charging coil and the circuit board.

[0014] The advantages of adopting the above technical solution are that setting up a charging coil enables wireless charging, and the heat sink can effectively reduce the heat generated by the charging coil and the circuit board, thereby improving the stability and service life of the charging components.

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

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

[0017] Furthermore, the lower housing is provided with a heat dissipation cavity, and the heat dissipation cavity is provided with a mounting cavity for installing the cooling fan. The bottom of the mounting cavity is provided with multiple air inlets, and a fan baffle is installed on the side of the cooling fan. An air outlet is provided between the fan baffle and the mounting cavity.

[0018] The advantages of adopting the above technical solution are that the cooling fan plays a role in heat dissipation, and the air inlet allows outside air to enter the mounting cavity, providing an ample air source for the cooling fan and ensuring effective heat dissipation. At the same time, the existence of the heat dissipation cavity provides the cooling fan with a relatively independent space, reducing the impact on other parts of the device during the heat dissipation process.

[0019] Furthermore, the first and second flow channels are disposed on the upper housing, and multiple partitions are disposed inside the mounting cavity. The partitions divide the air outlet into multiple channels that are connected to the first and second flow channels.

[0020] The advantage of adopting the above technical solution lies in the fact that the partition plate's function is to rationally distribute the airflow generated by the cooling fan. The partition plate divides the air outlet into multiple channels, which are connected to the first and second airflow channels respectively, allowing the airflow to flow more precisely to the parts requiring cooling. At the same time, the partition plate also makes the airflow distribution more uniform, reducing localized overheating and further optimizing the heat dissipation performance of the entire in-vehicle wireless fast charging device. This allows the device to operate stably and efficiently even in high-power fast charging scenarios, providing users with a better user experience.

[0021] Furthermore, the second flow channel connects the gap between the mounting cavity and the charging component, with its outlet facing the charging component, while the outlet of the first flow channel faces the plane on which the mobile phone is placed.

[0022] The advantages of adopting the above technical solution are as follows: the first airflow channel blows air towards the surface where the phone is placed, promptly removing the heat generated by the phone during charging and preventing overheating from affecting charging efficiency and lifespan. The second airflow channel directs the airflow to the upper side of the charging component, directly acting on the charging coil, circuit board, and other heat-generating core components, rapidly reducing their temperature. During continuous high-power fast charging, the charging component generates a large amount of heat. If this heat is not dissipated in time, it will affect charging efficiency and even damage the charging component. The second airflow channel precisely directs the cooling airflow to the charging component, effectively solving this problem and ensuring stable operation of the charging component. Simultaneously, this layout of the first and second airflow channels, respectively targeting the phone and the charging component, achieves precise heat dissipation for different heat sources, greatly improving heat dissipation efficiency. Moreover, this heat dissipation method reduces the frequency of overheat protection mechanisms triggered by heat accumulation, preventing charging interruptions and making the charging process smoother, further enhancing the user experience. Furthermore, this dual-airflow channel design has good adaptability, flexibly adjusting the airflow distribution according to the heat characteristics of different phones and charging components to achieve optimal heat dissipation. In practical applications, regardless of changes in the phone's heat level or the charging components operating at different power levels, the device can ensure stable operation of the entire in-vehicle wireless fast charging device 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 advantages of adopting the above technical solution are that the number of channels comprehensively considers the heat dissipation requirements of both the phone and the charging components. The three primary airflow channels provide sufficient airflow coverage to the surface where the phone is placed, ensuring effective heat dissipation. The two secondary airflow channels meet the heat dissipation requirements of the charging components, precisely directing airflow to the critical heat-generating parts of the charging components. This alternating arrangement results in a more uniform and rational airflow distribution, avoiding the airflow turbulence and heat dissipation dead zones that can result from a concentrated arrangement of a single type of airflow channel. This layout allows the entire device to form a relatively balanced thermal environment during heat dissipation, ensuring both the charging safety and performance of the phone and maintaining the stable operation of the charging components. Furthermore, this combination of number and layout offers good operability and economic efficiency in actual production, effectively controlling production costs and improving the product's market competitiveness while meeting heat dissipation requirements.

[0025] Furthermore, multiple sensors are attached to the charging coil to sense its temperature.

[0026] The advantage of adopting the above technical solution is that by setting a sensor to detect the temperature during the charging process, the heating status of the charging coil can be monitored in real time. Once the charging coil temperature becomes too high, the sensor can transmit the temperature signal to the device's control system, thus achieving temperature monitoring of the charging coil.

[0027] Furthermore, the lower housing is provided with a wiring port, with slots on both sides of the wiring port, multiple guide grooves on the side of the wiring port, and multiple connection holes at the bottom.

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

[0029] Furthermore, a baffle is provided at the outlet of the second flow channel, and the baffle has an arc-shaped transition surface inside, with the outlet formed therein facing the charging component.

[0030] The advantages of adopting the above technical solution are that the arc-shaped surface design at the bottom of the baffle allows airflow to be directed towards the charging component at a more suitable angle and direction, enabling the airflow to cover the key heat-generating parts of the charging component more evenly and avoiding the situation where airflow is concentrated in one place while other parts are not adequately cooled. Moreover, the arc-shaped surface can reduce the resistance of airflow when flowing out of the second guide channel, allowing the airflow to flow more smoothly and further improving the heat dissipation efficiency of the charging component. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0032] Figure 1 This is a cross-section of point A of the in-vehicle wireless fast charging device of this utility model. Figure 1

[0033] Figure 2 This is a cross-section of point B of the in-vehicle wireless fast charging device of this utility model. Figure 2

[0034] Figure 3 This is a top view of the vehicle-mounted wireless fast charging device of this utility model.

[0035] Figure 4 This is an isometric drawing of the overall structure of the vehicle-mounted wireless fast charging device of this utility model.

[0036] Figure 5 This is a schematic diagram of the structure of this utility model with the upper shell removed.

[0037] Figure 6 This is a schematic diagram of the lower shell structure of this utility model.

[0038] Figure 7 This is a schematic diagram of the lower shell structure of this utility model.

[0039] The reference numerals used in the attached figures are as follows:

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

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

[0042] like Figure 1-4 As shown, this utility model discloses a vehicle-mounted wireless fast charging device, comprising:

[0043] The housing assembly includes an upper housing 1 and a lower housing 2, with a receiving cavity 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 located inside the receiving cavity and is used for wireless charging of mobile phones;

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

[0046] The advantage of adopting the above technical solution is that, through reasonable structural design and heat dissipation layout, 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. It can efficiently dissipate heat for both the mobile phone and the charging component 3 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 can 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 and fixed to the lower side of the charging coil 31 and can 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 the influence of 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 inside the housing assembly and located on the lower side of the heat sink 33.

[0048] The charging coil 31 enables wireless charging, and the heat sink 33 effectively reduces the heat generated by the charging coil 31 and the circuit board 32, thereby improving the stability and lifespan of the charging component 3.

[0049] Furthermore, the lower housing 2 is provided with a heat dissipation cavity, within which is a mounting cavity 21 for installing the cooling fan 4. Multiple mounting posts are provided within the mounting cavity 21, serving as support and positioning posts for fixing the cooling fan 4. The cooling fan 4 is a conventional configuration in this field and can be selected for installation according to usage needs. Multiple air inlets 22 are provided at the bottom of the mounting cavity 21, each consisting of an array of circular through holes. A fan baffle 23 is installed on the side of the cooling fan 4, with an air outlet between the fan baffle 23 and the mounting cavity 21. The fan baffle 23 serves to guide airflow, directing the air blown by the cooling fan 4 through the air outlet into the first and second flow channels. The air inlets 22 allow outside air to enter the mounting cavity 21, providing sufficient airflow for the cooling fan 4 and ensuring effective heat dissipation. Simultaneously, the presence of the mounting cavity 21 provides the cooling fan 4 with a relatively independent space, reducing the impact on other parts of the device during heat dissipation.

[0050] Furthermore, the first guide channel 5 and the second guide channel 6 are disposed on the upper housing 1, and a plurality of partition plates 24 are disposed in the mounting cavity 21. The partition plates 24 divide the air outlet into multiple channels that are connected to the first guide channel 5 and the second guide channel 6.

[0051] The second flow channel 6 connects the gap between the mounting cavity 21 and the charging component 3, and the outlet faces the charging component 3. It guides the air blown out by the cooling fan 4 to the space between the circuit board 32 and the heat sink 33 to dissipate heat from the circuit board 32 and the heat sink 33. The upper housing 1 is provided with a main air outlet 11 at a position away from the second flow channel so that the airflow can be discharged from the housing and ensure air circulation.

[0052] The outlet of the first flow channel 5 faces the plane 12 where the mobile phone is placed, so as to carry away the heat generated by the mobile phone during the charging process in time, and avoid the mobile phone from being affected by overheating, thus reducing charging efficiency and service life.

[0053] The second airflow channel 6 directs airflow to the upper side of the charging component 3, directly acting on the core heat-generating components such as the charging coil 31 and circuit board 32, rapidly reducing their temperature. During continuous high-power fast charging, the charging component 3 generates a large amount of heat. If this heat is not dissipated in time, it will affect charging efficiency or even damage the charging component 3. By precisely directing the cooling airflow to the charging component 3 through the second airflow channel 6, this problem can be effectively solved, ensuring the stable operation of the charging component 3. At the same time, the layout of the first airflow channel 5 and the second airflow channel 6, which are respectively designed for the mobile phone and the charging component 3, achieves precise heat dissipation for different heat sources, greatly improving heat dissipation efficiency. Moreover, this heat dissipation method can also reduce the frequency of overheat protection mechanisms triggered by heat accumulation, avoiding charging interruptions and making the charging process smoother, further enhancing the user experience. In addition, this dual airflow channel design also has good adaptability, flexibly adjusting the airflow distribution according to the heat characteristics of different mobile phones and the charging component 3 to achieve the best heat dissipation effect. In practical applications, regardless of how the phone's heat level changes or how the charging component 3 operates 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 airflow channels 5 and two second airflow channels 6, which are alternately arranged. This arrangement takes into account the heat dissipation requirements of both the phone and the charging component 3. The three first airflow channels 5 provide sufficient airflow, while the two second airflow channels 6 meet the heat dissipation requirements of the charging component 3, precisely guiding the airflow to the key heat-generating parts of the charging component 3. This alternating arrangement results in a more uniform and rational airflow distribution, avoiding the airflow turbulence and heat dissipation dead zones that might result from a concentrated arrangement of a single type of airflow channel. This layout allows the entire device to form a relatively balanced thermal environment during heat dissipation, ensuring both the charging safety and performance of the phone and maintaining the stable operation of the charging component 3. Simultaneously, this combination of quantity and layout offers good operability and economic efficiency in actual production, effectively controlling production costs and improving the product's market competitiveness while meeting heat dissipation requirements.

[0055] Furthermore, multiple sensors 7 are attached to the charging coil 31 to sense its temperature. The sensors 7 are thermistors. An antenna for NFC communication is located around the charging coil 31. The charging coil 31, the thermistor connection, and the NFC antenna connection are all connected to the circuit board 32. This allows for rapid temperature identification of the charging coil 31 and the circuit board 32. By installing an MCU (microcontroller), the fan speed is dynamically adjusted based on the device temperature, ensuring efficient heat dissipation while reducing noise and power consumption, thus achieving precise temperature monitoring of the charging coil 31. Upon receiving the signal, the MCU takes corresponding measures according to a preset program. For example, it can adjust the power of the cooling fan 4 to increase the airflow into the first and second airflow channels 5 and 6, enhancing heat dissipation; it can also appropriately reduce the charging power to decrease the heat generated by the charging coil 31, preventing damage due to overheating and extending its lifespan. Simultaneously, it prevents excessively high 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 can provide users with temperature information during the charging process, allowing them to have a more intuitive understanding of the charging status and further enhancing the user experience. Moreover, sensor 7 uses a thermistor, which has advantages such as high sensitivity and fast response speed, and can promptly and accurately sense temperature changes in the charging coil 31, providing reliable data support for the control system and ensuring that the entire device can operate stably and efficiently in various complex operating environments.

[0056] In some implementation schemes, such as Figure 6As shown, the lower housing 2 is provided with a wiring port 25, with slots 26 on both sides of the wiring port 25, multiple guide grooves 27 on the side of the wiring port 25, and multiple connection holes 28 on the bottom. Corresponding wiring positions are provided on the circuit board 32. The wiring port 25 is used to fix the wire harness connector. The wire harness connector connects to the circuit board 32 to realize signal transmission, power connection, and other functions. During connection, the protrusions on both sides of the wire harness connector enter into the slots 26 for fixation, while the guide grooves 27 act as guides to prevent damage to the connector. The wiring port 25 facilitates the installation and fixation of the wire harness connector, ensures the stability and reliability of the connector connection, and effectively prevents the wire harness from falling off.

[0057] In some implementations, such as... Figure 7 As shown, a baffle 61 is specially designed and installed at the outlet of the second flow channel 6. This baffle 61 is integrally molded with the second flow channel 6, forming a tight connection between the baffle and the main body. The upper inner surface of the baffle 61 features a smoothly transitioning arc-shaped surface with an outlet that connects to the second flow channel 6. This arc-shaped surface design effectively improves the flow characteristics of the fluid at the outlet, reducing turbulence and energy loss. The connection between the baffle 61 and the flow channel is seamless and natural, ensuring the integrity and sealing performance of the structure. This integral molding manufacturing process guarantees structural strength while avoiding the risk of leakage due to loose connections.

[0058] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A vehicle-mounted wireless fast charging device, characterized in that, include: The housing assembly includes an upper housing (1) and a lower housing (2), with a receiving cavity 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. The charging component (3) is disposed in the receiving cavity and is used for wireless charging of the mobile phone; The heat dissipation assembly includes a heat dissipation fan (4) installed in the receiving cavity and a first airflow channel (5) facing the mobile phone and a second airflow channel (6) facing the charging assembly (3).

2. The vehicle-mounted wireless fast charging device according to claim 1, characterized in that, The charging component (3) includes a charging coil (31) and a circuit board (32), with a heat sink (33) disposed 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 housing (2) is provided with a heat dissipation cavity, and the heat dissipation cavity is provided with an installation cavity (21) for installing the cooling fan (4). The bottom of the installation cavity (21) is provided with multiple air inlets (22). The side of the cooling fan (4) is provided with a fan baffle (23), and there is an air outlet between the fan baffle (23) and the installation cavity (21).

5. The vehicle-mounted wireless fast charging device according to claim 4, characterized in that, The first flow channel (5) and the second flow channel (6) are disposed on the upper housing (1). Multiple partition plates (24) are disposed in the mounting cavity (21). The partition plates (24) divide the air outlet into multiple channels that are connected to the first flow channel (5) and the second flow channel (6).

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

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

8. The vehicle-mounted wireless fast charging device according to claim 2, characterized in that, Multiple sensors (7) are attached to the charging coil (31) for sensing the temperature of the charging coil (31).

9. The vehicle-mounted wireless fast charging device according to claim 2, characterized in that, The lower housing (2) is provided with a wiring port (25), and slots (26) are provided on both sides of the wiring port (25). Multiple guide grooves (27) are provided on the side of the wiring port (25), and multiple connection holes (28) are provided at 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 flow channel (6). The baffle (61) has an arc-shaped transition surface inside, and the outlet formed therein faces the charging component (3).

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