An EPP and MPP selection configuration type wireless charging device

Abstract

The application discloses an EPP and MPP selection configuration type wireless charging device and belongs to the technical field of wireless charging. The EPP and MPP selection configuration type wireless charging device comprises an EPP pad, an MPP pad and a base shell, the outer surface of the base shell is provided with a mounting clamping groove, the two sides of the mounting clamping groove are provided with buckles, wherein the EPP pad and the MPP pad are connected with the mounting clamping groove through the buckles. In order to solve the problem that the newly emerged MPP type wireless charging cannot be supported by the old wireless charger, a new wireless charger is needed, after the mobile phone is replaced, the wireless charging type of the mobile phone is changed, and the existing vehicle cabin configuration cannot be used, a quick disassembly and assembly structure design of one base and two modules is adopted, the two charger modules can be quickly disassembled and assembled, and the air duct structure compatible with the two modules is adopted according to the heat dissipation adaptation of the two modules, so that the temperature control of the two groups of modules during use can be guaranteed to the maximum extent.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of wireless charging, in particular to an EPP and MPP selection configuration type wireless charging device. BACKGROUND

[0002] Wireless charging devices are usually used to charge mobile phones in a vehicle environment. The newly emerging MPP type wireless charging cannot be supported by the old wireless charger, and a new wireless charger is needed. If the wireless charging type of the next mobile phone changes after the mobile phone is replaced, the existing vehicle cabin configuration cannot meet the new demand. SUMMARY

[0003] The application aims to provide an EPP and MPP selection configuration type wireless charging device, which adopts a quick disassembly and assembly structure design of one base and two modules. The two charger modules can be quickly disassembled and assembled, and the air duct structure compatible with the two modules is adopted for the heat dissipation adaptation of the two modules. In this way, the temperature control of the two modules during use can be guaranteed to the greatest extent, and the problems in the prior art can be solved.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: an EPP and MPP selection configuration type wireless charging device, comprising an EPP pad, an MPP pad and a base shell, the outer surface of the base shell is provided with a mounting clamping groove, and the two sides of the mounting clamping groove are provided with buckles, wherein the EPP pad and the MPP pad are connected with the mounting clamping groove through the buckles, that is, the EPP charging module is assembled when the EPP type is used, and the MPP charging module is assembled when the MPP type is used, one end of the base shell is provided with a heat dissipation air slot, the inside of the base shell is provided with a circuit board cover, and the outer surface of the circuit board cover is provided with a heat dissipation air duct, wherein the heat dissipation air slot and the heat dissipation air duct are mutually penetrated, one end of the heat dissipation air duct is provided with a heat dissipation fan, and the heat dissipation fan and the heat dissipation air duct are connected through a clamping groove.

[0005] Further, the inside of the circuit board cover is provided with a module circuit board, the lower part of the module circuit board is provided with a base sealing plate, the base sealing plate and the base shell are connected through screws, and the outer surface of the base sealing plate is provided with a fan shaft groove, wherein the heat dissipation fan penetrates the module circuit board and extends to the inside of the fan shaft groove.

[0006] Further, the heat dissipation fan comprises a bracket, an air inlet end and a flow guide shell cover, wherein the bracket is connected with the circuit board cover through screws, the inside of the air inlet end is provided with a fan, the fan is rotationally connected with the bracket through a bearing, the inside of the fan is provided with an internal motor, the inside of the flow guide shell cover is provided with a guide head, and a turbine is arranged between the guide head and the fan.

[0007] Further, the turbine is rotationally connected with the inner motor, the guide head is arranged as an arc-shaped conical structure, and an arc-shaped ring cavity is arranged between the guide head and the flow guide shell cover, the guide head extends out of the air outlet end of the flow guide shell cover (403).

[0008] Further, the base sealing plate is internally provided with a temperature sensor and a microcontroller, the temperature sensor is electrically connected with the microcontroller, the microcontroller is electrically connected with the inner motor, and the microcontroller controls heat dissipation in the following manner:

[0009] The temperature sensor collects the temperature value in the base shell in real time and transmits the temperature value to the microcontroller, and records the basic temperature T0 of the wireless charging device before starting charging;

[0010] The microcontroller counts the received temperature value and draws a temperature change curve, and respectively calls historical temperature change curves L i， i is 1 and 2, respectively representing the historical temperature change curves in the EPP type wireless charging process and the MPP type wireless charging process;

[0011] Based on the historical temperature change curves L i , the temperature change curvatures k t in the first temperature change interval, the second temperature change interval and the third temperature change interval are respectively calculated; t is 1, 2 and 3; wherein the first temperature change interval is (25°~30°), the second temperature change interval is (30°~35°), and the third temperature change interval is (35°~45°).

[0012] When the temperature value reaches the first preset temperature threshold, and the temperature change curvature reaches the first preset temperature change rate, the microcontroller controls the inner motor to start, and the inner motor drives the turbine to move at a first rotational speed; the first preset temperature threshold is greater than the maximum value of the first temperature change interval;

[0013] When the temperature value reaches the second preset temperature threshold, or the temperature change rate reaches the second preset temperature change rate, the microcontroller controls the inner motor to start, and the inner motor drives the turbine to move at a second rotational speed;

[0014] The turbine drives the fan to rotate, and the cool air sucked into the heat dissipation air slot is sucked into the air inlet along the heat dissipation air duct, and the heat is discharged from the air outlet.

[0015] Further, the inside of the EPP pad is provided with an EPP coil upper shell, the inside of the EPP coil upper shell is provided with an EPP coil assembly, the lower side of the EPP coil assembly is provided with an EPP coil circuit board, and the lower side of the EPP coil circuit board is provided with an EPP coil lower shell, wherein the EPP coil assembly is electrically connected with the EPP coil circuit board, and the EPP coil circuit board is connected with the EPP coil lower shell and the EPP coil upper shell by screws respectively.

[0016] Further, the inside of the EPP pad is provided with an EPP coil upper shell, the inside of the EPP coil upper shell is provided with an EPP coil assembly, the lower side of the EPP coil assembly is provided with an EPP coil circuit board, and the lower side of the EPP coil circuit board is provided with an EPP coil lower shell, wherein the EPP coil assembly is electrically connected with the EPP coil circuit board, and the EPP coil circuit board is connected with the EPP coil lower shell and the EPP coil upper shell by screws respectively.

[0017] Further, the inside of the MPP pad is provided with an MPP coil upper shell, wherein the surface of the MPP pad is provided with a circular slot, the inside of the MPP coil upper shell is provided with an MPP magnet, the lower side of the MPP magnet is provided with an MPP coil assembly, and the MPP magnet is attached to the MPP coil assembly.

[0018] Further, the lower side of the MPP coil assembly is provided with an MPP coil circuit board, the MPP coil assembly is electrically connected with the MPP coil circuit board, the lower side of the MPP coil circuit board is provided with an MPP coil lower shell, the lower side of the MPP coil lower shell is provided with an MPP heat-conducting pad, the lower side of the MPP heat-conducting pad is provided with an MPP Peltier, wherein the lower side of the MPP Peltier is provided with a first MPP heat-conducting device and a second MPP heat-conducting device.

[0019] Further, the EPP coil assembly and the MPP coil assembly each include a transmitting coil, which transmits a detection signal outward at a preset time interval, for detecting whether there is a wireless signal of an electronic device requiring wireless charging in the vicinity;

[0020] The microcontroller further includes a charging mode adjusting module, which acquires the working state and the remaining power of the electronic device when detecting the signal of the electronic device requiring charging, and adjusts the charging mode according to the working state of the electronic device and the temperature value of the wireless charging device;

[0021] When the working state of the electronic device is in the screen-off state or the screen-on state without software running, the charging mode adjusting module controls to charge the electronic device with a preset first constant power;

[0022] When the temperature value in the wireless charging device base shell reaches the second preset temperature threshold, the charging mode adjustment module adjusts the charging output power to reduce, so that the adjusted charging output power can make the temperature value in the wireless charging device base shell less than the second preset temperature threshold after a unit time period, and the length of time of the unit time period is less than 2 minutes.

[0023] If the temperature value in the wireless charging device base shell is still higher than the second preset temperature threshold after the unit time period, the charging mode adjustment module controls to stop charging and enter the intermittent charging mode.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] 1、The fast disassembly and assembly structure design of one base and two modules is adopted, the EPP charging module is assembled in the EPP type, and the MPP charging module is assembled in the MPP type, the two kinds of charger modules can be quickly disassembled and assembled, and the air duct structure compatible with the two modules is adopted for heat dissipation adaptation, so that the temperature control of the two modules during use can be guaranteed to the maximum extent.

[0026] 2、The airflow direction of the vortex fan is perpendicular to the blade shaft, high-pressure airflow is formed through centrifugal force, the complex structure such as the heat plate and the heat dissipation fin inside the charger can be penetrated, the problem of limited heat dissipation space in the vehicle-mounted environment is solved, the vortex fan can concentrate airflow to penetrate the small gap between the annular magnet area heat dissipation fin of the MPP module, heat accumulation is avoided, and the airflow can accurately cover the heat core area by cooperating with the customized air duct design, so that the heat dissipation efficiency is improved. DETAILED DESCRIPTION

[0027] Figure 1 It is the overall front view of the present application;

[0028] Figure 2 It is a base shell structure schematic diagram of the present application;

[0029] Figure 3 It is a heat dissipation fan structure schematic diagram of the present application;

[0030] Figure 4 It is a heat dissipation fan cross-section structure schematic diagram of the present application;

[0031] Figure 5 It is an EPP pad structure schematic diagram of the present application;

[0032] Figure 6 It is an MPP pad structure schematic diagram of the present application;

[0033] Figure 7 It is a wireless charging power supply flow chart of the present application.

[0034] In the figure: 1, EPP pad; 2, MPP pad; 3, base shell; 4, cooling fan; 101, EPP coil upper shell; 102, EPP coil assembly; 103, EPP coil circuit board; 104, EPP coil lower shell; 105, EPP heat-conducting pad; 106, EPP Peltier; 107, EPP heat-conducting device; 201, MPP coil upper shell; 202, MPP magnet; 203, MPP coil assembly; 204, MPP coil circuit board; 205, MPP coil lower shell; 206, MPP heat-conducting pad; 207, MPP Peltier; 208, first MPP heat-conducting device; 209, second MPP heat-conducting device; 301, mounting clamping groove; 302, circuit board cover; 303, base sealing plate; 304, module circuit board; 3011, lock catch; 3012, cooling air slot; 3021, cooling air duct; 3031, fan shaft slot; 401, bracket; 402, air inlet end; 403, flow guide shell cover; 404, fan; 405, guide head; 406, inner motor; 4041, turbine; 407, air outlet end. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0036] In order to solve the problem that the newly emerging MPP type wireless charging cannot be supported by the old wireless charger, a new wireless charger is needed, and after replacing the mobile phone, the wireless charging type of the mobile phone changes, and the existing vehicle cabin configuration cannot be used. Please refer to Figures 1-7 The technical solutions of the present embodiment are as follows: Embodiment 1

[0037] An EPP and MPP selection configuration type wireless charging device, comprising an EPP pad 1, an MPP pad 2 and a base shell 3, each EPP pad 1 and MPP pad 2 bottom embedded magnetic attraction alignment contact and six needle spring needle, for power supply and data communication, while the module shape is different, wherein the EPP pad 1 is square structure, the MPP pad 2 is circular structure, prevent wrong installation, the outer surface of the base shell 3 is provided with mounting clamping groove 301, both sides of the mounting clamping groove 301 are provided with lock catch 3011, wherein the EPP pad 1 and the MPP pad 2 are connected with the mounting clamping groove 301 through the lock catch 3011, namely assembling EPP charging module in EPP type, assembling MPP charging module in MPP type, one end of the base shell 3 is provided with a heat dissipation air slot 3012, the inside of the base shell 3 is provided with a circuit board cover 302, the outer surface of the circuit board cover 302 is provided with a heat dissipation air duct 3021, wherein the heat dissipation air slot 3012 and the heat dissipation air duct 3021 are mutually penetrated, one end of the heat dissipation air duct 3021 is provided with a heat dissipation fan 4, the heat dissipation fan 4 can be embedded in the charger base or the module back, and is seamlessly combined with the air duct layer design, which is suitable for different heat dissipation requirements of EPP / MPP module, the heat dissipation fan 4 and the heat dissipation air duct 3021 are connected through the clamping groove, the base shell 3 is fixed in the vehicle, the module circuit board 304 integrates general power management, communication protocol stack (Qi2.0), temperature sensor and connection interface, the interface adopts clamping groove+spring needle design, supports quick plug and power / data transmission.

[0038] The inside of the circuit board cover 302 is provided with a module circuit board 304, the lower side of the module circuit board 304 is provided with a base sealing plate 303, the base sealing plate 303 is connected with the base shell 3 through screws, the outer surface of the base sealing plate 303 is provided with a fan shaft slot 3031, wherein the heat dissipation fan 4 extends to the inside of the fan shaft slot 3031 through the module circuit board 304, the EPP charging module is assembled in EPP type, the MPP charging module is assembled in MPP type, the two kinds of charger modules can be quickly disassembled, and the modification is carried out without disassembling the vehicle cabin, since the adaptation of the two modules is required, the heat dissipation adopts the air duct structure compatible with the two modules, so that the temperature control of the two groups of modules during use can be maximized, the heat dissipation air duct 3021 adopts a deformable guide vane, which automatically adjusts the shape of the air outlet after the module is installed, adapts to the heat dissipation area of the EPP and MPP modules, the heat dissipation air slot 3012 is located on the side surface of the base shell 3, and the air outlet is the fan shaft slot 3031 on the surface of the base sealing plate 303.

[0039] The inside of the EPP pad 1 is provided with an EPP coil upper shell 101, the inside of the EPP coil upper shell 101 is provided with an EPP coil assembly 102, the lower part of the EPP coil assembly 102 is provided with an EPP coil circuit board 103, and the lower part of the EPP coil circuit board 103 is provided with an EPP coil lower shell 104, wherein the EPP coil assembly 102 is electrically connected with the EPP coil circuit board 103, the EPP coil circuit board 103 is connected with the EPP coil lower shell 104 and the EPP coil upper shell 101 through screws respectively, and the outer surfaces of the EPP coil circuit board 103 and the EPP coil lower shell 104 are provided with hole grooves, wherein the lower part of the EPP coil lower shell 104 is provided with an EPP heat-conducting pad 105, the lower part of the EPP heat-conducting pad 105 is provided with an EPP Peltier 106, the lower part of the EPP Peltier 106 is provided with an EPP heat-conducting device 107, and the EPP heat-conducting device 107 extends to the inside of the EPP heat-conducting device 107. The EPP heat-conducting device 107 can play a good heat-conducting effect in the heat dissipation process, and improve the heat dissipation efficiency.

[0040] The inside of the MPP pad 2 is provided with an MPP coil upper shell 201, wherein the surface of the MPP pad 2 is provided with a circular slot, the inside of the MPP coil upper shell 201 is provided with an MPP magnet 202, the lower part of the MPP magnet 202 is provided with an MPP coil assembly 203, the MPP magnet 202 is attached to the MPP coil assembly 203, the lower part of the MPP coil assembly 203 is provided with an MPP coil circuit board 204, the MPP coil assembly 203 is electrically connected with the MPP coil circuit board 204, the lower part of the MPP coil circuit board 204 is provided with an MPP coil lower shell 205, the lower part of the MPP coil lower shell 205 is provided with an MPP heat-conducting pad 206, the lower part of the MPP heat-conducting pad 206 is provided with an MPP Peltier 207, wherein the lower part of the MPP Peltier 207 is provided with a first MPP heat-conducting device 208 and a second MPP heat-conducting device 209.

[0041] The MPP module is usually used in the high-power transmitting end of wireless charging, needs to handle larger current and higher power density, causes the heat generation of the chip and the magnetic element to increase significantly, so the heat-conducting device structure is adopted, the heat dissipation area is increased, the heat transfer from the power device to the environment is accelerated, and under high power, the heat spot in the chip is more likely to form, the double heat-conducting devices can disperse the heat flow and avoid the device failure caused by local overheating. Embodiment 2

[0042] The EPP and the MPP can cause the overall temperature of the equipment to rise in the use process, and the axial flow fan structure can assist the base to perform efficient heat dissipation on the charging module, and at the same time, the influence of wind noise on the driving environment is reduced to the maximum extent.

[0043] The heat dissipation fan 4 comprises a bracket 401, an air inlet end 402 and a flow guide cover 403, wherein the bracket 401 is connected with the circuit board cover 302 through screws, the inside of the air inlet end 402 is provided with a fan 404, the blade design of the centrifugal fan is optimized according to fluid simulation, the noise can be controlled to be less than or equal to 35 dB(A) at 4000 RPM, the interference with in-vehicle voice call or music playing is avoided, the fan 404 is rotationally connected with the bracket 401 through a bearing, the inside of the fan 404 is provided with an inner motor 406, the inside of the flow guide cover 403 is provided with a guide head 405, a turbine 4041 is arranged between the guide head 405 and the fan 404, the turbine 4041 is rotationally connected with the inner motor 406, the guide head 405 is provided in an arc-shaped conical structure, an arc-shaped ring cavity is arranged between the guide head 405 and the flow guide cover 403, and an air outlet end 407 of the flow guide cover 403 is provided with the guide head 405;

[0044] The airflow direction generated by the vortex fan is perpendicular to the fan blade shaft, a high-pressure airflow is formed through centrifugal force, the complex structure such as the vapor chamber and the heat dissipation fin inside the charger can be penetrated, the problem of limited heat dissipation space in the vehicle-mounted environment is solved, the gap between the annular magnet area heat dissipation fin of the MPP module is small, the vortex fan can concentrate airflow to penetrate, heat accumulation is avoided, and the airflow can accurately cover the heat core area by cooperating with the customized air duct design, so that the heat dissipation efficiency is improved.

[0045] Further, a temperature sensor and a microcontroller are arranged in the base sealing plate 303, the temperature sensor is electrically connected with the microcontroller, the microcontroller is electrically connected with the inner motor 406, and the heat dissipation is controlled in the following manner:

[0046] The temperature sensor collects the temperature value in the base shell 3 in real time and transmits the temperature value to the microcontroller, and records the basic temperature T0 of the wireless charging device before starting charging;

[0047] The microcontroller counts the received temperature value and draws a temperature change curve, and respectively calls historical temperature change curves L i， i is 1 and 2, respectively representing the historical temperature change curves in the EPP type wireless charging process and the MPP type wireless charging process;

[0048] Based on the historical temperature change curves L i , the temperature change curvatures k t; t is 1, 2 and 3; wherein the first temperature variation interval is (25°-30°), the second temperature variation interval is (30°-35°), and the third temperature variation interval is (35°-45°), and in general, if the temperature value is higher than 45°, it is considered that the temperature is too high, at which time it is not suitable to continue wireless charging, and in general, unless the temperature of the vehicle environment itself is also very high, the temperature of the wireless charging device is higher than 45°, which is less considered as a temperature variation interval;

[0049] When the temperature value reaches the first preset temperature threshold, and the temperature variation curvature reaches the first preset temperature variation rate, the microcontroller controls the inner motor 406 to start, and the inner motor 406 drives the turbine 4041 to move at a first rotational speed; the value range of the first rotational speed is 1300 revolutions / minute-1600 revolutions / minute, and the first preset temperature threshold is greater than the maximum value of the first temperature variation interval;

[0050] When the temperature value reaches the second preset temperature threshold, or the temperature variation rate reaches the second preset temperature variation rate, the microcontroller controls the inner motor 406 to start, and the inner motor 406 drives the turbine 4041 to move at a second rotational speed; the value range of the second rotational speed is 2500 revolutions / minute-2800 revolutions / minute;

[0051] The turbine 4041 drives the fan 404 to rotate, and the cool air sucked into the heat dissipation air slot 3012 is sucked into the air inlet end 402 along the heat dissipation air duct 3021, and the heat is discharged from the air outlet end 407.

[0052] The principle and effect of the above technical solution are: by setting the temperature sensor and the microcontroller in the base cover plate 303, the heat dissipation of the wireless charging device in the charging state can be controlled. Since each time the wireless charging process is performed, it is usually charged within a certain time period, and if there is no external intervention during the process from the beginning to the end of charging, the temperature of the wireless charging device will gradually increase. The microcontroller can record the temperature change during each charging process, thereby arranging a historical temperature change curve. Since the EPP type charging and the MPP type charging method are different, the MPP type wireless charging rises faster in a short time, so the historical temperature change curve can be recorded respectively, and different heat dissipation strategies are adopted. 1， When the current charging type is MPP type charging, the historical temperature change curve L 2，When the temperature value reaches the first preset temperature threshold and the temperature change rate reaches the first preset temperature change rate, the microcontroller controls the inner motor 406 to drive the turbine 4041 to move at a first rotating speed, so as to perform heat dissipation; when the temperature value reaches a second preset temperature threshold or the temperature change rate reaches a second preset temperature change rate, the microcontroller controls the inner motor 406 to drive the turbine 4041 to move at a second rotating speed, so as to perform heat dissipation. This considers the case that the temperature is too high but the temperature change rate is not high, or the case that the temperature rises too fast in a short time but the temperature value itself has not reached the second preset temperature threshold. Both of the two cases are large in damage to the charging device and need to be rapidly cooled. In the process of heat dissipation, due to the rotation of the fan 404, cooling gas in the external environment can be sucked into the air inlet end 402 along the heat dissipation air duct 3021. In this process, the flow of gas is formed to take away heat and is discharged from the air outlet end 407, so as to realize cooling. The above scheme has high heat dissipation efficiency and is intelligent and can target cooling.

[0053] Preferably, since the temperature is too high in the process of continuous charging of the wireless charging device, the charging effect and the service life of the product are affected, therefore, the application sets intelligent adjustment for the charging mode. Specifically, the EPP coil assembly 102 and the MPP coil assembly 203 each include a transmitting coil. The transmitting coil transmits a detection signal outward at a preset time interval, for detecting whether a wireless signal of an electronic device needing wireless charging exists nearby. A receiving coil is arranged on the electronic device. When the electronic device is close to the wireless charging device and is placed at a charging position, the receiving coil enters the magnetic field generated by the transmitting coil, an induced electromotive force is generated in the receiving coil, and the transmitting coil and the receiving coil realize entering the charging mode through the establishment of a communication link.

[0054] The microcontroller further includes a charging mode adjustment module. When the signal of the electronic device needing charging is detected, the charging mode adjustment module acquires the working state and the remaining power of the electronic device, and adjusts the charging mode according to the working state of the electronic device and the temperature value of the wireless charging device.

[0055] When the working state of the electronic device is in a screen-off state or a screen-on software running state, the charging mode adjustment module controls to charge the electronic device with a preset first constant power.

[0056] When the temperature value in the wireless charging device base shell 3 reaches a second preset temperature threshold, the charging mode adjustment module adjusts the charging output power to be reduced, so that the adjusted charging output power can make the temperature value in the wireless charging device base shell 3 less than the second preset temperature threshold after a continuous unit time period, and the length of time of the unit time period is less than 2 minutes.

[0057] If the temperature value in the wireless charging device base shell 3 is still higher than the second preset temperature threshold after a unit time period, the charging mode adjustment module controls to stop charging and enter the intermittent charging mode.

[0058] The intermittent charging mode refers to stopping charging after a period of time and then continuing to enter the charging mode. This intermittent charging mode can maximize the avoidance of temperature overheat of the wireless charging device and the electronic device.

[0059] The principle and effect of the above technical solution are that the charging mode can be adjusted according to the working state of the electronic device and the temperature value of the wireless charging device through the adjustment of the charging mode adjustment module, so as to avoid temperature overheat affecting the charging effect. The premise of starting the intermittent charging mode is that the temperature value in the wireless charging device base shell 3 is too high, and the expected cooling effect has not been achieved after adopting the cooling measure of reducing the charging output power. In this case, the charging is still continued, which will cause temperature overheat affecting the service life of the electronic device and the wireless charging device in the vehicle-mounted environment. Therefore, the intelligent and timely stop of charging can effectively avoid temperature overheat, and the intelligent degree is high, especially in the MPP type charging process, which has good protection effect.

[0060] The working principle is that the EPP charging module is assembled in the EPP type, and the MPP charging module is assembled in the MPP type. The two charger modules can be quickly disassembled and assembled, and the modification is carried out without disassembling the vehicle cabin. Since the adaptation of the two modules is required, the air duct structure compatible with the two modules is adopted for heat dissipation, so that the temperature control of the two modules during use can be maximized. The fan can be embedded in the charger base or the back of the module, and is seamlessly combined with the layered design of the air duct. The airflow direction of the eddy current fan is perpendicular to the blade shaft, and high-pressure airflow is formed through centrifugal force. The airflow can penetrate the complex structures such as the heat plate and the heat dissipation fin inside the charger, solving the problem of limited heat dissipation space in the vehicle-mounted environment. The gap between the heat dissipation fins in the annular magnet area of the MPP module is small, and the eddy current fan can concentrate airflow to penetrate and avoid heat accumulation. In combination with the customized air duct design, the airflow can accurately cover the heat core area, improving the heat dissipation efficiency.

[0061] It should be noted that, in the present document, the terms such as first and second, etc., are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0062] While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, which can be understood by those skilled in the art.

Claims

1. An EPP and MPP selection configuration type wireless charging device, characterized in that, Including EPP pad (1), MPP pad (2) and base shell (3), the outer surface of the base shell (3) is provided with mounting clamping groove (301), both sides of the mounting clamping groove (301) are provided with lock catch (3011), wherein the EPP pad (1) and MPP pad (2) are connected with the mounting clamping groove (301) through the lock catch (3011), namely assembling EPP charging module in EPP type, assembling MPP charging module in MPP type, one end of the base shell (3) is provided with heat dissipation air slot (3012), the inside of the base shell (3) is provided with circuit board cover (302), the outer surface of the circuit board cover (302) is provided with heat dissipation air duct (3021), wherein the heat dissipation air slot (3012) and the heat dissipation air duct (3021) are mutually penetrated, one end of the heat dissipation air duct (3021) is provided with heat dissipation fan (4), the heat dissipation fan (4) is connected with the heat dissipation air duct (3021) through the clamping groove.

2. The EPP and MPP selection configuration type wireless charging device according to claim 1, wherein: The inside of the circuit board cover (302) is provided with module circuit board (304), the lower portion of the module circuit board (304) is provided with base sealing plate (303), the base sealing plate (303) is connected with the base shell (3) through screw, the outer surface of the base sealing plate (303) is provided with fan shaft slot (3031), wherein the heat dissipation fan (4) extends to the inside of the fan shaft slot (3031) through the module circuit board (304).

3. The EPP and MPP selection configuration type wireless charging device according to claim 2, wherein: The heat dissipation fan (4) includes bracket (401), air inlet end (402) and flow guide shell cover (403), wherein the bracket (401) is connected with the circuit board cover (302) through screw, the inside of the air inlet end (402) is provided with fan (404), the fan (404) is rotatably connected with the bracket (401) through bearing, the inside of the fan (404) is provided with inner motor (406), the inside of the flow guide shell cover (403) is provided with guide head (405), the guide head (405) and the fan (404) are provided with turbine (4041) therebetween.

4. The EPP and MPP selection configuration type wireless charging device according to claim 3, wherein: The turbine (4041) is rotatably connected with the inner motor (406), the guide head (405) is provided as arc-shaped conical structure, arc-shaped ring cavity is arranged between the guide head (405) and the flow guide shell cover (403), the guide head (405) extends from the air outlet end (407) of the flow guide shell cover (403).

5. The EPP and MPP selection configuration type wireless charging device according to claim 4, wherein: The base sealing plate (303) is provided with temperature sensor and microcontroller, the temperature sensor is electrically connected with the microcontroller, the microcontroller is electrically connected with the inner motor (406), and the heat dissipation is controlled through the following way: The temperature sensor collects the temperature value in the base shell (3) in real time, and transmits to the microcontroller, records the basic temperature T0 of the wireless charging device before starting charging; The microcontroller counts the received temperature values and draws a temperature change curve, respectively calls the historical temperature change curve L i， The value of i is 1 and 2, respectively representing the historical temperature change curve in the EPP type wireless charging process and the MPP type wireless charging process. Based on the historical temperature change curve L i , the temperature change curvatures k t in the first temperature change interval, the second temperature change interval and the third temperature change interval are respectively calculated; t is 1, 2 and 3; wherein the first temperature change interval is (25°~30°), the second temperature change interval is (30°~35°), and the third temperature change interval is (35°~45°). When the temperature value reaches the first preset temperature threshold, and the temperature change curvature reaches the first preset temperature change rate, the microcontroller controls the inner motor (406) to start, and the inner motor (406) drives the turbine (4041) to move at a first rotating speed; the first preset temperature threshold is greater than the maximum value of the first temperature change interval; When the temperature value reaches the second preset temperature threshold, or the temperature change rate reaches the second preset temperature change rate, the microcontroller controls the inner motor (406) to start, and the inner motor (406) drives the turbine (4041) to move at a second rotating speed; The turbine (4041) drives the fan (404) to rotate, and the cool air sucked into the heat dissipation air slot (3012) is sucked into the air inlet end (402) along the heat dissipation air duct (3021), and the heat is discharged from the air outlet end (407).

6. The EPP and MPP selection configured wireless charging device of claim 5, wherein: The EPP pad (1) is internally provided with an EPP coil upper shell (101), the inside of the EPP coil upper shell (101) is provided with an EPP coil assembly (102), the lower part of the EPP coil assembly (102) is provided with an EPP coil circuit board (103), and the lower part of the EPP coil circuit board (103) is provided with an EPP coil lower shell (104), wherein the EPP coil assembly (102) and the EPP coil circuit board (103) are electrically connected, and the EPP coil circuit board (103) is connected with the EPP coil lower shell (104) and the EPP coil upper shell (101) by screws respectively.

7. The EPP and MPP selection configured wireless charging device of claim 6, wherein: The outer surfaces of the EPP coil circuit board (103) and the EPP coil lower shell (104) are provided with holes and grooves, wherein the lower part of the EPP coil lower shell (104) is provided with an EPP heat-conducting pad (105), the lower part of the EPP heat-conducting pad (105) is provided with an EPP Peltier (106), the lower part of the EPP Peltier (106) is provided with an EPP heat-conducting device (107), and the EPP heat-conducting device (107) extends into the inside of the heat dissipation air duct (3021).

8. The EPP and MPP selection configuration type wireless charging device of claim 6, wherein: The inside of the MPP pad (2) is provided with an MPP coil upper shell (201), wherein the surface of the MPP pad (2) is provided with a circular slot, the inside of the MPP coil upper shell (201) is provided with an MPP magnet (202), the lower part of the MPP magnet (202) is provided with an MPP coil assembly (203), and the MPP magnet (202) is attached to the MPP coil assembly (203).

9. The EPP and MPP selection configured wireless charging device of claim 8, wherein: The MPP coil assembly (203) is provided below the MPP coil circuit board (204), the MPP coil assembly (203) is electrically connected with the MPP coil circuit board (204), the MPP coil circuit board (204) is provided below the MPP coil lower shell (205), the MPP coil lower shell (205) is provided below the MPP heat conduction pad (206), the MPP heat conduction pad (206) is provided below the MPP Peltier (207), wherein the MPP Peltier (207) is provided below the first MPP heat conductor (208) and the second MPP heat conductor (209).

10. The EPP and MPP selection configured wireless charging device of claim 8, wherein: The EPP coil assembly (102) and the MPP coil assembly (203) both include a transmitting coil, which transmits a detection signal outward through a preset time interval, for detecting whether there is a wireless signal of an electronic device needing wireless charging in the vicinity; The microcontroller further includes a charging mode adjusting module, which acquires the working state and the residual power of the electronic device when detecting the signal of the electronic device needing charging, and adjusts the charging mode according to the working state of the electronic device and the temperature value of the wireless charging device; When the working state of the electronic device is in the screen-off state or the screen-on software-free state, the charging mode adjusting module controls to charge the electronic device with a preset first constant power; When the temperature value in the wireless charging device base shell (3) reaches a second preset temperature threshold, the charging mode adjusting module adjusts the charging output power to be reduced, so that the adjusted charging output power can make the temperature value in the wireless charging device base shell (3) less than the second preset temperature threshold after a continuous unit time period, and the length of time of the unit time period is less than 2 minutes; If it is detected that the temperature value in the wireless charging device base shell (3) is still higher than the second preset temperature threshold after the unit time period, the charging mode adjusting module controls to stop charging and enter an intermittent charging mode.

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