Vehicle-mounted wireless charging module control method

Abstract

The invention discloses a vehicle-mounted wireless charging module control method, which comprises the steps of establishing a wireless charging state with to-be-charged equipment, and further comprises the steps of communicating with the to-be-charged equipment to obtain first information, and comparing the first information with a preset value; the first information comprises at least one of charging power and charging temperature of to-be-charged equipment; the preset value comprises preset power and preset temperature; when any one of the following conditions 1 and 2 is met, starting a cooling function; condition 1: charging power is greater than preset power; condition 2: the charging temperature is greater than the preset temperature. According to the invention, automatic cooling of the to-be-charged equipment can be realized.

Description

Technical Field

[0001] The present invention relates to the field of automotive electronics, and in particular to a control method for a vehicle-mounted wireless charging module. Background Art

[0002] There is a lack of in-vehicle wireless charging module products that support MPP in the current market. Traditional wireless charging modules do not have active heat dissipation design or directly open holes on the interior surface for heat dissipation. This not only affects the integrity and aesthetics of the interior design, but also affects the heat dissipation performance. Summary of the invention

[0003] The present invention provides a vehicle-mounted wireless charging module, which supports MPP charging and has a good heat dissipation effect.

[0004] A vehicle-mounted wireless charging module control method includes establishing a wireless charging state with a device to be charged, and also includes: communicating with the device to be charged, obtaining first information, and comparing the first information with a preset value; the first information includes at least one of a charging power and a charging temperature of the device to be charged; the preset value includes a preset power and a preset temperature; when any one of the following conditions 1 and 2 is met, a cooling function is started; condition 1: the charging power is greater than the preset power; condition 2: the charging temperature is greater than the preset temperature.

[0005] Preferably, the first information is continuously obtained and compared with a preset value, and when the cumulative time for which condition one and condition two are satisfied exceeds a predetermined time, the cooling function is increased.

[0006] Preferably, the cooling function is: turning on the fan; or: turning on the vehicle air conditioner; or: reducing the charging power.

[0007] Preferably, the increased cooling function is: increasing the speed of the fan; or: lowering the temperature of the vehicle air conditioner; or: further reducing the charging power.

[0008] Preferably, the corresponding vehicle-mounted wireless charging module includes: an upper shell, a lower shell, a fan, a top cover and a charging assembly; a first protrusion is formed on the lower shell facing the upper shell, and a mounting cavity is provided on the back of the first protrusion for installing the fan; a lower shell air duct is provided on the first protrusion, connecting the mounting cavity; a second protrusion is formed on the upper shell, and an upper shell air duct is formed on the second protrusion, and the upper shell air duct is exposed from the surface of the upper shell; the top cover is rotatably covered on the second protrusion, and a top cover air duct is provided on the top cover, and the size of the top cover air duct can be adjusted by rotating the top cover; the cooling function includes rotating the top cover.

[0009] Preferably, the preset power is 15W; the preset temperature is 30°C.

[0010] The present invention can realize automatic cooling of the device to be charged. In some embodiments, MPP charging can be realized and the problem of interior aesthetics can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a flowchart of the vehicle-mounted wireless charging module control method.

[0012] Figure 2 The exploded diagram of the vehicle-mounted wireless charging module corresponding to the control method.

[0013] Figure 3 The figure is a schematic diagram of the lower shell of the vehicle-mounted wireless charging module corresponding to the control method.

[0014] Figure 4 The figure is a schematic diagram of the upper shell of the vehicle-mounted wireless charging module corresponding to the control method.

[0015] Figure 5 The cross-sectional view of the vehicle-mounted wireless charging module corresponding to the control method. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0017] The present invention provides a vehicle-mounted wireless charging module control method, which enables the vehicle-mounted wireless charging module to automatically determine whether to start a cooling function to cool down a device to be charged that is being wirelessly charged. The device to be charged may be a mobile phone, and the following description will all be based on a mobile phone as an example of the device to be charged.

[0018] The vehicle-mounted wireless charging module control method (referred to as the control method) includes establishing a wireless charging state with a device to be charged, and also includes: communicating with the device to be charged, obtaining first information, and comparing the first information with a preset value; the first information includes at least one of a charging power and a charging temperature of the device to be charged; the preset value includes a preset power and a preset temperature; when any one of the following conditions 1 and 2 is met, the cooling function is started; condition 1: the charging power is greater than the preset power; condition 2: the charging temperature is greater than the preset temperature.

[0019] The first information is continuously obtained and compared with the preset value. When the cumulative time of satisfying condition 1 and condition 2 exceeds the predetermined time, the cooling function is increased. The cooling function is: turning on the fan 8; or: turning on the vehicle air conditioner; or: reducing the charging power. Increasing the cooling function is: increasing the speed of the fan 8; or: reducing the temperature of the vehicle air conditioner; or: further reducing the charging power. The charging power can be reduced to 0, that is, stopping the wireless charging operation.

[0020] For ease of understanding, the following describes the structure of the vehicle-mounted wireless charging module. Figure 2 It includes an upper shell 4, a lower shell 7, a fan 8 and a charging assembly. The charging assembly is installed between the upper shell 4 and the lower shell 7, and its specific structure will be described below.

[0021] A first protrusion 71 is formed on the lower shell 7 toward the upper shell 4. The back of the first protrusion 71 is a mounting cavity for mounting a fan 8. The fan 8 can be fixed by screws 9. Figure 3 The first protrusion 71 has a lower shell air duct 72 connected to the installation cavity. The specific position of the lower shell air duct 72 should be opened at an appropriate position according to the needs. In the embodiment shown in the figure, it is set on a side of the first protrusion 71.

[0022] The structure of the first protrusion 71 is not limited to a specific shape, as long as the installation cavity at the bottom thereof can accommodate the installation of the fan 8 .

[0023] Combination Figure 4 A second protrusion 41 is formed on the upper shell 4, and an upper shell air duct 42 is formed on the second protrusion 41, and the upper shell air duct 42 is exposed from the surface of the upper shell 4. The upper shell air duct 42 and the lower shell air duct 72 are connected, and the airflow blown by the fan 8 can pass through these two air ducts.

[0024] The top of the second raised portion 41 may be hollow. In some embodiments, the second raised portion 41 may be covered by the top cover 1, and the top cover 1 has a top cover air duct. Preferably, the top cover 1 is rotatably connected to the second raised portion 41. By rotating the top cover 1, the top cover air duct and the upper shell air duct can be selectively connected, or the two can be disconnected. Of course, the size of the connection can also be adjusted, that is, the size of the top cover air duct can be adjusted to adjust the air volume. During the wireless charging process, the two are connected, so that the airflow of the fan 8 can be blown out from the top cover air duct to cool the charging mobile phone. When the two are not connected, pollution such as foreign matter and dust can be avoided. The rotation process of the top cover can be manual or automatic. For example, when the above-mentioned cooling function starts, the top cover 1 can be automatically rotated to ensure the passage of airflow. When the cooling function is increased, the size of the larger top cover air duct can be adjusted to increase the air volume.

[0025] The fan 8 can also be connected to the air outlet of the vehicle air conditioner, and the cool air blown out by the vehicle air conditioner can be directly introduced to cool the mobile phone. In some embodiments, the installation cavity on the back of the first protrusion 71 may not be installed with the fan 8, but directly used as the air duct of the vehicle air conditioner. However, this is only an optional implementation. In general applications, the vehicle air conditioner does not necessarily turn on the cold air at any time, so the fan 8 is still installed in most embodiments.

[0026] The communication with the device to be charged mentioned above is generally carried out through carrier communication via the electromagnetic field of wireless charging. The charging power and charging temperature in the first information are generally obtained by the mobile phone, which is then sent to the on-board wireless charging module via the carrier. The charging power and charging temperature included in the first information mentioned in this article are all collected by the mobile phone, which is also a necessary function for mobile phones that support wireless charging.

[0027] The preset power mentioned in the system is 15W and the preset temperature is 30℃. Currently, the common power for mobile phone charging is 5W, 15W, 50W, etc. 5W is low power and generates relatively less heat, so the preset power is 15W, but this also needs to be set according to the actual situation. For example, when the device to be charged is a watch, earphone or other product, its charging power may be smaller and the corresponding heat generation is also smaller, so the cooling function may not necessarily be activated.

[0028] After continuously obtaining the first information and comparing it with the preset value, if the cumulative duration of condition one and condition two exceeds the preset duration, it means that the cooling function of the retaining wall is not sufficient to cool the mobile phone, or that the mobile phone has been in a high-power wireless charging working state (that is, the charging power has always been greater than 15W), and therefore better cooling measures are needed.

[0029] The reason why the two conditions are cumulative here is that the charging power and charging temperature change over time. The mobile phone application will also detect these two data. In the case of excessive temperature, the mobile phone may also issue a request to reduce the charging power. In this case, if the cumulative time of the two conditions does not exceed the preset time, it can be considered that the temperature of the mobile phone has dropped, and the cooling function can be automatically activated. The preset time can be 1 minute.

[0030] Next, the structure of the vehicle-mounted wireless charging module is explained. The outlet of the upper shell air duct 42 is located on the outer peripheral wall of the second protrusion 41, that is, the air flow can be blown out from above the top surface of the upper shell 4. This position happens to be the bottom of the mobile phone when it is wirelessly charged, which is the position with the highest heat, and can provide a better cooling effect.

[0031] The second raised portion 41 may also be provided with a closed top without being hollowed out. Similarly, the top of the first raised portion 71 may also be hollowed out or not hollowed out. The top of the first raised portion 71 is not higher than the second raised portion 41. Generally, the top of the first raised portion 71 is below the upper shell 4.

[0032] Preferably, the coil assembly 2, the shielding cover 5 and the PCBA assembly 6 are also included. These can be part of the charging assembly. The shielding cover 5 and the PCBA assembly 6 are sequentially arranged between the upper shell 4 and the lower shell 7; and they respectively have through holes for the first protrusion 71 to pass through; the coil assembly 2 is located between the upper shell 4 and the lower shell 7, and is connected to the PCBA assembly 6. The coil assembly 2 can be located on top of the first protrusion 71. It can be understood from here that the shape of the first protrusion 71 can realize the installation of the coil assembly 2, and its specific structure is not limited. The first protrusion 71 can be too high in the position of the coil assembly 2 so that it can meet the distance requirements of wireless charging of mobile phones.

[0033] The second raised portion 41 has a mounting groove 42 for mounting the magnet assembly 3, which is used to absorb the mobile phone that needs wireless charging. In addition to being used to mount the magnet assembly 3, the second raised portion 41 can also structurally raise the position of the mobile phone, so that there is a certain space between the bottom surface of the mobile phone and the upper shell 4, and the airflow blown out of the top cover air duct can flow through the space, achieving a better cooling effect. Figure 5 , the arrow in the figure is the direction of air flow.

[0034] In some embodiments, the fan 8 is an axial flow fan, which has a larger air volume and lower noise compared to the centrifugal fan used in general vehicle-mounted wireless charging modules. It can better improve the active heat dissipation performance while also better taking into account the noise comfort of the entire vehicle.

[0035] Preferably, snap-fit ​​fixing is adopted on the upper shell 4 and the lower shell 7, which reduces the number of screws used, reduces the installation process, and saves labor costs.

[0036] At present, conventional in-car wireless charging products take about 180 minutes or even longer to charge an Apple phone from 0 to 100%. However, through this solution, active heat dissipation can shorten this time to about 105 minutes, greatly improving the user's charging experience. Taking the iPhone 16pro as an example, the following Table 1 is the measured data:

[0037] Table 1

[0038]

[0039] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A vehicle-mounted wireless charging module control method, comprising establishing a wireless charging state with a device to be charged, characterized in that: Also includes: Communicate with the device to be charged, obtain first information, and compare the first information with a preset value; The first information includes at least one of a charging power and a charging temperature of the device to be charged; The preset values ​​include preset power and preset temperature; When any one of the following conditions 1 and 2 is met, the cooling function is activated; Condition 1: Charging power is greater than the preset power; Condition 2: The charging temperature is greater than the preset temperature.

2. The vehicle-mounted wireless charging module control method according to claim 1, characterized in that: The first information is continuously obtained and compared with a preset value. When the cumulative time for satisfying condition one and condition two exceeds a preset time, the cooling function is increased.

3. The vehicle-mounted wireless charging module control method according to claim 1, characterized in that: The cooling function is: turning on the fan (8); Or: turn on the car air conditioner; Or: reduce the charging power.

4. The vehicle-mounted wireless charging module control method according to claim 2, characterized in that: The increased cooling function is: increasing the rotation speed of the fan (8); Or: lower the temperature of the vehicle air conditioner; Or: further reduce the charging power.

5. The vehicle-mounted wireless charging module control method according to claim 1, characterized in that: The corresponding vehicle-mounted wireless charging module comprises: an upper shell (4), a lower shell (7), a fan (8), a top cover (1) and a charging component; A first protrusion (71) is formed on the lower shell (7) and faces the upper shell (4); a mounting cavity is provided on the back of the first protrusion (71) for mounting the fan (8); a lower shell air duct (72) is provided on the first protrusion (71) and communicates with the mounting cavity; A second protrusion (41) is formed on the upper shell (4), an upper shell air duct (42) is formed on the second protrusion (41), and the upper shell air duct (42) is exposed from the surface of the upper shell (4); The top cover (1) is rotatably covered on the second protruding portion (41), and the top cover (1) is provided with a top cover air duct, and the size of the top cover air duct can be adjusted by rotating the top cover (1); The cooling function comprises rotating the top cover (1).

6. The vehicle-mounted wireless charging module control method according to claim 1, characterized in that: The preset power is 15W; The preset temperature is 30°C.

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