Wireless charging device

Abstract

The invention relates to a wireless charging device. The wireless charging device comprises a wireless charging module, an air draft heat dissipation module, a temperature detection module and a control module. The air draft heat dissipation module is used for discharging heat generated in the wireless charging process in an air draft mode. The temperature detection module is used for detecting temperature parameters in the charging process; the control module is in communication connection with the temperature detection module and the air draft heat dissipation module and used for adjusting the working power of the air draft heat dissipation module according to the temperature parameters. The wireless charging module charges a charging terminal, and the temperature detection module continuously collects temperature parameters in the charging process and transmits data to the control module in real time; and the control module adjusts the working power of the air draft heat dissipation module according to the temperature parameter, so that the temperature in the charging process is always maintained in a preset interval, and the temperature of the wireless charging equipment is adaptively adjusted. The current limiting problem caused by high temperature during wireless charging and the abnormal charging condition caused by low temperature are effectively solved.

Description

Wireless charging devices Technical Field

[0001] This application relates to the field of wireless charging equipment technology, and in particular to wireless charging equipment. Background Technology

[0002] With the rapid development of wireless charging technology, wireless charging speeds are constantly improving and it has been widely used in various smart terminals such as mobile phones and tablets. However, during high-speed wireless charging, the electromagnetic induction loss of the charging coil and the charging loss of the charging terminal battery generate a large amount of heat, causing the temperature of the charging terminal and wireless charging device to rise sharply. When the temperature exceeds a critical value, the device will trigger a temperature control and current limiting protection mechanism, forcibly reducing the charging power and seriously affecting charging efficiency. Summary of the Invention

[0003] Based on this, a wireless charging device is provided to solve the problem of reduced charging power due to excessive temperature during wireless charging.

[0004] Embodiments of this application disclose a wireless charging device, comprising:

[0005] A wireless charging module is used to provide wireless charging for charging terminals;

[0006] The exhaust heat dissipation module is used to remove the heat generated during wireless charging by exhausting air.

[0007] Temperature detection module, used to detect temperature parameters during the charging process;

[0008] The control module is communicatively connected to both the temperature detection module and the exhaust cooling module, and is used to adjust the operating power of the exhaust cooling module according to the temperature parameters.

[0009] In one embodiment, the exhaust cooling module includes:

[0010] A cooling fan that blows air toward the side away from the charging terminal to create an exhaust airflow on the side facing the charging terminal.

[0011] In one embodiment, the wireless charging module includes a housing, and the outer wall of the housing is provided with a charging contact area for contacting the charging terminal and charging the charging terminal;

[0012] The cooling fan is disposed inside the housing, and the housing is provided with a ventilation back panel. The ventilation back panel is disposed on the side of the cooling fan away from the charging terminal, and the ventilation back panel is hollowed out.

[0013] In one embodiment, the wireless charging module further includes a charging coil disposed within the housing and close to the charging contact area;

[0014] The wireless charging device also includes a heat dissipation auxiliary module, which is disposed between the cooling fan and the charging coil, and is used to receive the heat from the charging coil and transfer it to the cooling fan.

[0015] In one embodiment, the heat dissipation auxiliary module includes:

[0016] A cooling plate is disposed on the side of the charging coil near the cooling fan and is in contact with the charging coil.

[0017] In one embodiment, the heat dissipation auxiliary module further includes:

[0018] A heat sink is disposed between the heat conduction plate and the cooling fan, and the heat sink is provided with a number of spaced-apart heat dissipation fins.

[0019] In one embodiment, the temperature detection module includes:

[0020] A first temperature sensor is disposed in the charging contact area between the outer shell of the wireless charging module and the charging terminal, and is used to detect the temperature of the charging contact area, which is recorded as the first temperature information.

[0021] A second temperature sensor is disposed in the area of ​​the wireless charging module where the charging coil is disposed, and is used to detect the temperature of the charging coil and record it as the second temperature information.

[0022] The control module adjusts the operating power of the exhaust cooling module based on the first temperature information and the second temperature information.

[0023] In one embodiment, when the temperature parameter is higher than a first preset threshold, the operating power of the exhaust heat dissipation module is increased;

[0024] When the temperature parameter is lower than the second preset threshold, reduce the working power of the exhaust heat dissipation module or control the exhaust heat dissipation module to stop working.

[0025] Wherein, the first preset threshold is higher than the second preset threshold.

[0026] In one embodiment, the wireless charging module is provided with a magnetic connection structure for detachably connecting the wireless charging module to the charging terminal.

[0027] In one embodiment, the magnetic connection structure includes a thermomagnetic silicone pad.

[0028] According to the wireless charging device of this application embodiment, the wireless charging module charges the charging terminal, and the temperature detection module continuously collects temperature parameters during the charging process and transmits the data to the control module in real time. The control module adjusts the working power of the exhaust cooling module according to the temperature parameters, so that the temperature during the charging process is always maintained within a preset range, enabling the wireless charging device to adaptively adjust its temperature. Through the above settings, the current limiting problem caused by high temperature and the charging abnormality caused by low temperature during wireless charging are effectively solved, ensuring stable performance of wireless charging efficiency from the temperature control perspective. The exhaust cooling module uses an exhaust method to remove the heat generated during wireless charging, and its airflow direction is away from the charging terminal. Compared with the traditional front-blowing cooling method, this avoids the influence of wind on the charging terminal, prevents the charging terminal from detaching, and makes the wireless charging process more stable. The entire charging process requires no manual intervention, has a high degree of automation, and improves the convenience and overall user experience of using the wireless charging device. Attached Figure Description

[0029] Figure 1 is a schematic diagram of a wireless charging device according to an embodiment of this application.

[0030] Figure 2 is a schematic diagram of the structure of a wireless charging device according to an embodiment of this application.

[0031] Figure 3 is an exploded view of the structure of a wireless charging device according to an embodiment of this application.

[0032] Figure 4 is a schematic diagram of the heat sink in a wireless charging device according to an embodiment of this application.

[0033] Figure label:

[0034] 100. Wireless charging module; 110. Housing; 111. Charging contact area; 112. Ventilation back panel; 120. Charging coil;

[0035] 200. Exhaust cooling module;

[0036] 300. Temperature detection module; 310. First temperature sensor; 320. Second temperature sensor;

[0037] 400. Control module;

[0038] 500. Heat dissipation auxiliary module; 510. Cooling plate; 520. Heat sink; 521. Heat sink body; 522. Heat dissipation fins;

[0039] 600. Thermomagnetic silicone pad. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0046] Referring to Figure 1, at least one embodiment of this application proposes a wireless charging device, which includes a wireless charging module 100, a ventilation and heat dissipation module 200, a temperature detection module 300, and a control module 400. The wireless charging module 100 is used to provide wireless charging for the charging terminal; the ventilation and heat dissipation module 200 is used to exhaust the heat generated during the wireless charging process by ventilation; the temperature detection module 300 is used to detect the temperature parameters during the charging process; and the control module 400 is communicatively connected to the temperature detection module 300 and the ventilation and heat dissipation module 200, respectively, and is used to adjust the operating power of the ventilation and heat dissipation module 200 according to the temperature parameters.

[0047] According to the wireless charging device of this application embodiment, the wireless charging module 100 charges the charging terminal, and the temperature detection module 300 continuously collects temperature parameters during the charging process and transmits the data to the control module 400 in real time. The control module 400 adjusts the working power of the exhaust heat dissipation module 200 according to the temperature parameters, so that the temperature during the charging process is always maintained within a preset range, enabling the wireless charging device to adaptively adjust its temperature. Through the above settings, the current limiting problem caused by high temperature and the charging abnormality caused by low temperature during wireless charging are effectively solved, ensuring the stable performance of wireless charging efficiency from the temperature control level. The exhaust heat dissipation module 200 uses exhaust to remove the heat generated during wireless charging, and its airflow direction is away from the charging terminal. Compared with the traditional front-blowing heat dissipation method, it avoids the influence of wind on the charging terminal, prevents the charging terminal from detaching, and makes the wireless charging process more stable. The entire charging process does not require manual intervention, has a high degree of automation, and improves the convenience and overall user experience when using the wireless charging device.

[0048] Referring to Figures 2 and 3, in some embodiments, the exhaust cooling module 200 includes a cooling fan that exhausts air towards the side away from the charging terminal to create an exhaust airflow on the side facing the charging terminal. When the cooling fan is activated, it exhausts air towards the outside of the wireless charging module 100, creating a negative pressure environment inside the module. This generates an exhaust airflow from the charging contact area 111 of the charging terminal towards the cooling fan, forcibly drawing heat away and expelling it from the device.

[0049] With the above configuration, the cooling fan exhausts air towards the side away from the charging terminal, creating a directional airflow on the side facing the charging terminal. After the cooling fan starts, it exhausts air outwards from the wireless charging module 100, creating a negative pressure environment inside the module. This guides heat from the charging contact area 111 towards the cooling fan and forces it out, ensuring that heat dissipation is precisely applied to the core heat-generating area. The outward airflow design fundamentally avoids direct airflow onto the surface of the charging terminal, eliminating the risk of the terminal detaching due to airflow impact and making the wireless charging process more stable. This fan exhaust design, tailored to the functional requirements of the exhaust cooling module 200, achieves both efficient heat dissipation and terminal fixation without the need for additional complex fixing structures. It is particularly suitable for the use cases of portable wireless charging devices, allowing portable wireless charging devices to achieve efficient heat dissipation while ensuring stable and reliable charging, further expanding the applicability of the exhaust cooling module 200.

[0050] In some embodiments, the wireless charging module 100 includes a housing 110, the outer wall of which is provided with a charging contact area 111 for contacting a charging terminal and charging the charging terminal; a cooling fan is disposed inside the housing 110, and the housing 110 is provided with a ventilation back plate 112, which is disposed on the side of the cooling fan away from the charging terminal, and the ventilation back plate 112 is hollowed out.

[0051] With the above-mentioned configuration, the charging contact area 111 on the outer wall of the housing 110 can make close contact with the charging terminal and complete charging, ensuring the reliable implementation of the charging function. The housing 110 has a ventilation backplate 112 on the side of the cooling fan away from the charging terminal. The ventilation backplate 112 has a hollow design, providing a smooth airflow channel for the cooling fan, ensuring unobstructed airflow when the fan blows air outwards. This allows for the rapid formation of a stable negative pressure environment, helping the exhaust airflow efficiently remove heat from the charging contact area 111 and expel it to the outside of the device. While ensuring the compact integration of all components, this design makes the exhaust cooling operation more efficient and does not affect the contact state of the charging terminal, further enhancing the balance between heat dissipation and charging stability, making the overall structure of the device more suitable for actual use needs.

[0052] In some embodiments, the wireless charging module 100 further includes a charging coil 120 disposed within the housing 110 and near the charging contact area 111; the wireless charging device also includes a heat dissipation auxiliary module 500 disposed between the cooling fan and the charging coil 120, for receiving heat from the charging coil 120 and transferring it to the cooling fan. The heat dissipation auxiliary module 500, disposed between the cooling fan and the charging coil 120, can directly receive the heat dissipated by the charging coil 120, establishing a directional heat transfer path from the charging coil 120 to the heat dissipation auxiliary module 500 and then to the cooling fan, reducing heat accumulation around the charging coil 120 and enabling rapid conduction to the airflow channel where the cooling fan is located.

[0053] Through the above-mentioned configuration, the heat dissipation auxiliary module 500 enables more direct and smoother heat transfer, significantly improving the overall heat dissipation efficiency. Simultaneously, the heat dissipation auxiliary module 500 does not interfere with the normal charging function of the charging coil 120 and the charging contact area 111, nor does it affect the contact state between the charging terminal and the charging contact area 111. Working in synergy with the exhaust airflow of the exhaust heat dissipation module 200, it further enhances the wireless charging device's ability to control the charging temperature, ensuring that the device maintains a stable and reliable operating state throughout the entire efficient charging process.

[0054] In some embodiments, the heat dissipation auxiliary module 500 includes a cold-conducting plate 510, which is disposed on the side of the charging coil 120 near the cooling fan and in close contact with the charging coil 120. Specifically, the cold-conducting plate 510 may be made of copper. The cold-conducting plate 510 is disposed on the side of the charging coil 120 near the cooling fan and is in close contact with the charging coil 120. Using copper as the cold-conducting plate 510 allows it to fully utilize its excellent thermal conductivity, directly and efficiently absorbing the heat generated by the charging coil 120, preventing heat accumulation around the charging coil 120, and allowing heat to be quickly conducted from the charging coil 120 to the cold-conducting plate 510.

[0055] Referring to Figures 3 and 4, in some embodiments, the heat dissipation auxiliary module 500 further includes a heat sink 520, which is disposed between the cold-conducting plate 510 and the cooling fan. The heat sink 520 includes a heat sink body 521, on which a plurality of spaced-apart heat dissipation fins 522 are disposed. The heat sink 520, disposed between the cold-conducting plate 510 and the cooling fan, significantly increases the surface area for heat exchange due to the spaced-apart heat dissipation fins 522. The heat conducted from the cold-conducting plate 510 can be quickly dispersed onto each heat dissipation fin 522, forming sufficient contact with the airflow generated by the cooling fan.

[0056] Through the above configuration, the heat conduction of the cooling plate 510 and the large-area heat dissipation of the heat sink 522 work synergistically, making the heat transfer path from the charging coil 120 to the cooling fan smoother and the heat exchange more sufficient, significantly improving the overall heat dissipation efficiency. The heat dissipation auxiliary module 500 has a compact structure, and the fit between the cooling plate 510 and the charging coil 120 does not interfere with the wireless charging function of the charging coil 120. While ensuring that the charging efficiency is not affected, it further enhances the precise control of the charging temperature, allowing the wireless charging device to maintain a stable and reliable working state even in scenarios with high heat generation, such as high-power charging.

[0057] Referring to Figures 2 and 3, in some embodiments, the temperature detection module 300 includes a first temperature sensor 310 and a second temperature sensor 320. The first temperature sensor 310 is disposed in the charging contact area 111 between the housing 110 of the wireless charging module 100 and the charging terminal, and is used to detect the temperature of the charging contact area 111, which is recorded as the first temperature information. The second temperature sensor 320 is disposed in the area of ​​the wireless charging module 100 where the charging coil 120 is disposed, and is used to detect the temperature of the charging coil 120, which is recorded as the second temperature information. The control module 400 adjusts the operating power of the exhaust heat dissipation module 200 according to the first temperature information and the second temperature information.

[0058] The first temperature sensor 310 is located on the charging contact area 111 between the outer shell 110 of the wireless charging module 100 and the charging terminal, accurately collecting the first temperature information of this area. The second temperature sensor 320 is located on the area of ​​the wireless charging module 100 where the charging coil 120 is located, collecting the second temperature information of the charging coil 120 in real time. The two sensors detect the temperature of the core heat-related areas during the charging process, forming a relatively comprehensive temperature data acquisition system. This dual-sensor layout avoids the limitations of single-sensor detection, allowing the collected temperature information to fully reflect the actual temperature situation during wireless charging, providing the control module 400 with a more comprehensive and accurate decision-making basis. After combining the first and second temperature information, the control module 400 adjusts the working power of the exhaust heat dissipation module 200, making the power adjustment more targeted and reasonable. It avoids excessive heat dissipation due to high temperature in a single area, resulting in energy waste, and also avoids insufficient heat dissipation due to insufficient detection of a certain heat-generating area. This dual-temperature information-based control method further improves the accuracy of temperature control and enhances the heat dissipation effect of the exhaust heat dissipation module 200 without affecting the normal charging function of the wireless charging module 100. This ensures that the wireless charging device can maintain a stable and efficient operating state under different heat conditions, making the charging process more reliable.

[0059] In some embodiments, when the temperature parameter is higher than a first preset threshold, the operating power of the exhaust heat dissipation module 200 is increased; when the temperature parameter is lower than a second preset threshold, the operating power of the exhaust heat dissipation module 200 is reduced or the exhaust heat dissipation module 200 is stopped; wherein, the first preset threshold is higher than the second preset threshold. The control module 400 compares the received temperature parameter with a preset temperature range. If the temperature parameter is higher than the upper limit of the range, i.e., the first preset threshold, it is determined to be a high-temperature state, and an acceleration command is immediately sent to the exhaust heat dissipation module 200 to enhance the exhaust intensity and accelerate heat dissipation; if the temperature parameter is lower than the lower limit of the range, i.e., the second preset threshold, it is determined to be a low-temperature state, and a deceleration or shutdown command is sent to avoid energy waste caused by ineffective heat dissipation; through the above dynamic adjustment, the temperature during the charging process is always maintained within the preset optimal range.

[0060] Specifically, in some embodiments, the first preset threshold is set to the temperature of the charging terminal in the charging contact area 111 collected by the first temperature sensor 310, that is, when the first temperature information is 45 degrees, and the temperature of the charging coil 120 collected by the second temperature sensor 320, that is, when the second temperature information is 45 degrees, the fan power is increased from 30W to 35W; the second preset threshold is set to the temperature of the charging terminal in the charging contact area 111 collected by the first temperature sensor 310, that is, when the first temperature information is -20 degrees, and the temperature of the charging coil 120 collected by the second temperature sensor 320, that is, when the second temperature information is -20 degrees, the fan power is switched from 10W to stop working.

[0061] In some embodiments, when the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 is both greater than 45°C, which is higher than the first preset threshold of 45°C, the fan power is adjusted to 35W according to the rule that the working power of the exhaust heat dissipation module 200 is increased when the temperature parameter is higher than the first preset threshold. By increasing the power, the exhaust intensity is enhanced, and the high temperature is quickly dealt with to ensure charging stability.

[0062] When the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 is ≥30℃ and <45℃, which is lower than the first preset threshold of 45℃, there is no need to maintain the highest power. The fan power is adjusted to 30W to ensure heat dissipation while avoiding excessive energy consumption.

[0063] When the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 is ≥20℃ and <30℃, the temperature is further reduced. Therefore, the fan power is reduced to 25W to adapt to the current low heat generation state and balance the heat dissipation requirements and energy consumption control.

[0064] When the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 is ≥10℃ and <20℃, the temperature continues to decrease, and the fan power is adjusted to 20W accordingly to further reduce the energy waste caused by ineffective heat dissipation.

[0065] When the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 is both ≥0℃ and <10℃, the temperature continues to decrease, and the fan power is reduced to 15W, which is sufficient to meet the needs of the current temperature by maintaining only the basic heat dissipation capacity.

[0066] When the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 is both ≥-20℃ and <0℃, the temperature gets closer to the second preset threshold of -20℃, and the fan power is adjusted to 10W to operate at a lower power and reduce unnecessary energy consumption output.

[0067] When the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 is both <-20℃, which is lower than the second preset threshold of -20℃, the fan switches to stop working according to the rule that the exhaust heat dissipation module 200 stops working when the temperature parameter is lower than the second preset threshold, thus completely avoiding ineffective heat dissipation in low temperature environment and saving energy to the greatest extent.

[0068] With the above settings, using the first preset threshold of 45℃ and the second preset threshold of -20℃ as the dividing line, when the temperature of the charging terminal in the charging contact area 111 and the charging coil 120 gradually increases from below -20℃ to above 45℃, the fan will be adjusted from stopping to 10W, 15W, 20W, 25W, 30W and up to 35W, respectively, so as to realize the dynamic adaptation of power as the temperature rises and as the temperature falls or stops.

[0069] By implementing the above settings, erroneous adjustments caused by instantaneous temperature fluctuations in a single area are avoided. During charging, localized instantaneous temperature anomalies may occur. For example, the charging contact area 111 may experience a momentary high temperature due to a brief misalignment, or the area around the charging coil 120 may experience a momentary low temperature due to occasional airflow disturbances. These temperature changes do not reflect the true heating state of the entire charging system. Adjusting based solely on a single temperature signal would lead to frequent start-stop cycles of the cooling fan or sudden power fluctuations. For instance, a momentary high temperature in the charging contact area 111 might trigger the fan to increase to 35W, while the actual temperature of the charging coil 120 remains within the 30-45℃ range, resulting in excessive heat dissipation and wasted energy. Conversely, a momentary low temperature in the charging coil 120 might trigger the cooling fan to reduce its speed, while the charging contact area 111 remains at a high temperature, leading to insufficient heat dissipation. The dual-temperature consistency judgment requires that the temperatures of both core areas simultaneously meet the same range condition before adjusting the power, filtering out instantaneous fluctuations in a single area and ensuring that the adjustment action reflects the actual heating state of the system. Simultaneously, it avoids erroneous adjustments caused by a single sensor malfunction. Temperature sensors may malfunction due to poor contact, circuit interference, or other reasons, leading to distorted temperature information. Relying solely on a single fault signal can cause serious malfunctions: a false high temperature alarm might cause the cooling fan to unnecessarily increase to maximum power, resulting in unnecessary energy consumption; a false low temperature alarm might cause the cooling fan to prematurely shut down, leading to insufficient heat dissipation under actual high temperatures and triggering charging current limiting. Dual-temperature consistency logic requires that the temperature information collected by both sensors synchronously meet threshold conditions. A single sensor failure prevents dual-temperature matching, thus avoiding control actions based on erroneous signals and improving system reliability.

[0070] During wireless charging, the heat dissipation conditions of the charging contact area 111 and the charging coil 120 may differ. Adjusting the power based solely on the temperature of one area would lead to a deviation between the control direction and system requirements. Dual-temperature consistency determination uses the common temperature state of the two core heat-generating areas as the standard, ensuring that the power adjustment covers both the core heat generation of the coil and the contact heat dissipation of the terminal, avoiding control deviations caused by uneven local heat dissipation, and ensuring temperature stability throughout the charging process.

[0071] Referring to Figure 3, in some embodiments, the wireless charging module 100 is provided with a magnetic connection structure for detachably connecting the wireless charging module 100 to the charging terminal.

[0072] In some embodiments, the magnetic connection structure includes a thermomagnetic silicone pad 600. The thermomagnetic silicone pad 600 has magnetic properties, allowing the wireless charging module 100 to adhere stably to the charging terminal. It also helps to transfer the heat generated during charging with the help of the silicone material. At the same time, the detachable design allows users to easily separate the two, ensuring the stability of the terminal during charging while maintaining the flexibility of device use.

[0073] In this embodiment of the wireless charging device, the heat generated by the charging coil 120 during wireless charging is directly transferred to the heat-conducting plate it is attached to via thermal conduction. Simultaneously, the heat generated by the charging terminal during charging is first transferred through the charging contact area 111 to the tightly attached thermomagnetic silicone pad 600, which then conducts the heat to the heat-conducting plate. The heat-conducting plate collects all the heat transferred from the charging coil 120 and the thermomagnetic silicone pad 600, and further conducts it to the heat sink 520 connected to it, ultimately concentrating the heat on the fin surface of the heat sink 520, preventing heat accumulation around the heat source. Subsequently, the heat is finally diffused at the heat sink 520 through convection heat transfer. The fins of the heat sink 520 increase the heat exchange area, providing an efficient heat exchange carrier for the airflow driven by the cooling fan. The cooling fan adopts an exhaust-type negative pressure cooling design, with air exiting towards the side away from the charging terminal, creating a negative pressure environment inside the casing 110 of the wireless charging module 100. Under negative pressure, the exhaust airflow flows directionally across the surface of the heat dissipation fins 522 of the heat sink 520, making full contact with the heat on the heat dissipation fins 522 and completing heat exchange. The airflow carrying heat is finally discharged outside the device through the perforated ventilation backplate 112 of the outer casing 110. The entire process achieves directional and rapid heat dissipation. At the same time, because the airflow direction is away from the charging terminal, the risk of the terminal being detached due to airflow impact is avoided. The thermomagnetic silicone pad 600 not only transfers heat but also securely connects to the charging terminal through its magnetic properties, further ensuring charging stability.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wireless charging device, characterized in that, include: A wireless charging module (100) is used to provide wireless charging for the charging terminal; a ventilation and heat dissipation module (200) is used to exhaust the heat generated during the wireless charging process by means of ventilation; a temperature detection module (300) is used to detect the temperature parameters during the charging process; and a control module (400) is communicatively connected to the temperature detection module (300) and the ventilation and heat dissipation module (200) respectively, and is used to adjust the working power of the ventilation and heat dissipation module (200) according to the temperature parameters.

2. The wireless charging device according to claim 1, characterized in that, The exhaust heat dissipation module (200) includes a cooling fan that exhausts air toward the side away from the charging terminal to form an exhaust airflow on the side toward the charging terminal.

3. The wireless charging device according to claim 2, characterized in that, The wireless charging module (100) includes a housing (110), the outer wall of which is provided with a charging contact area (111) for contacting the charging terminal and charging the charging terminal; the cooling fan is disposed inside the housing (110), and the housing (110) is provided with a ventilation back plate (112), which is disposed on the side of the cooling fan away from the charging terminal, and the ventilation back plate (112) is hollowed out.

4. The wireless charging device according to claim 3, characterized in that, The wireless charging module (100) further includes a charging coil (120), which is disposed inside the housing (110) and close to the charging contact area (111); the wireless charging device further includes a heat dissipation auxiliary module (500), which is disposed between the cooling fan and the charging coil (120) for receiving the heat from the charging coil (120) and transferring it to the cooling fan.

5. The wireless charging device according to claim 4, characterized in that, The heat dissipation auxiliary module (500) includes a cooling plate (510) disposed on the side of the charging coil (120) near the cooling fan and in contact with the charging coil (120).

6. The wireless charging device according to claim 5, characterized in that, The heat dissipation auxiliary module (500) further includes a heat sink (520) disposed between the heat conduction plate (510) and the cooling fan, wherein the heat sink (520) is provided with a plurality of spaced heat dissipation fins (522).

7. The wireless charging device according to claim 1, characterized in that, The temperature detection module (300) includes: a first temperature sensor (310) disposed on the outer shell (110) of the wireless charging module (100) and the charging contact area (111) of the charging terminal, for detecting the temperature of the charging contact area (111) and recording it as first temperature information; a second temperature sensor (320) disposed on the area of ​​the wireless charging module (100) where the charging coil (120) is provided, for detecting the temperature of the charging coil (120) and recording it as second temperature information; the control module (400) adjusts the working power of the exhaust heat dissipation module (200) according to the first temperature information and the second temperature information.

8. The wireless charging device according to claim 7, characterized in that, When the temperature parameter is higher than the first preset threshold, the working power of the exhaust heat dissipation module (200) is increased; when the temperature parameter is lower than the second preset threshold, the working power of the exhaust heat dissipation module (200) is reduced or the exhaust heat dissipation module (200) is controlled to stop working; wherein, the first preset threshold is higher than the second preset threshold.

9. The wireless charging device according to claim 1, characterized in that, The wireless charging module (100) is provided with a magnetic connection structure for detachably connecting the wireless charging module (100) to the charging terminal.

10. The wireless charging device according to claim 9, characterized in that, The magnetic connection structure includes a thermomagnetic silicone pad (600).

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