Wireless charging device

Abstract

This application discloses a wireless charging device, which includes a housing, a first temperature detection module, a temperature regulation module, and a wireless charging module. The housing has a placement portion for placing a device to be charged. The first temperature detection module is disposed in the placement portion and is used to measure the temperature of the device to be charged. The temperature regulation module is in contact with the placement portion and has a heating mode and a cooling mode. The wireless charging module is disposed corresponding to the placement portion and is used to charge the device to be charged. When the temperature detected by the first temperature detection module is lower than a first threshold, the temperature regulation module activates the heating mode; when the temperature detected by the first temperature detection module is higher than the first threshold, the temperature regulation module activates the cooling mode. By regulating the temperature of the placement portion through the temperature regulation module, the device to be charged is kept at a suitable charging temperature, thereby improving the charging efficiency of the device.

Description

Technical Field

[0001] This application relates to the field of wireless charging technology, and more particularly to a wireless charging device. Background Technology

[0002] Wireless chargers allow electronic devices to be charged wirelessly, eliminating the need for data cables and offering greater convenience. However, wireless chargers generate heat during charging, which can affect charging speed. To improve heat dissipation, wireless chargers typically incorporate fans that increase airflow and dissipate heat.

[0003] However, when the ambient temperature is low, the electrolyte in the battery cell has poor activity, which also results in a slower charging speed. Utility Model Content

[0004] This application provides a wireless charging device that can heat electronic devices, thereby keeping the battery cells at a suitable temperature and improving the charging efficiency of the electronic devices.

[0005] This application provides a wireless charging device, which includes a housing, a first temperature detection module, a temperature adjustment module, and a wireless charging module. The housing has a placement portion for placing a device to be charged. The first temperature detection module is disposed on the placement portion and is used to measure the temperature of the device to be charged. The temperature adjustment module is in contact with the placement portion and has a heating mode and a cooling mode. The wireless charging module is disposed corresponding to the placement portion and is used to charge the device to be charged. When the temperature detected by the first temperature detection module is lower than a first threshold, the temperature adjustment module activates the heating mode; when the temperature detected by the first temperature detection module is higher than the first threshold, the temperature adjustment module activates the cooling mode.

[0006] Beneficial effects: By regulating the temperature of the placement part through the temperature regulation module, the temperature of the device to be charged is also regulated, so that the device to be charged can maintain a suitable charging temperature. The device to be charged can be charged for a longer time with high efficiency, thus improving the charging efficiency of the device to be charged. Moreover, the negative impact of charging the device to be charged at a suitable temperature on the battery is small, thereby extending the service life of the device to be charged. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the structure of a wireless charging device in one embodiment of this application;

[0009] Figure 2 This is a block diagram of a wireless charging device in one embodiment of this application;

[0010] Figure 3 This is a block diagram of a wireless charging device according to another embodiment of this application;

[0011] Figure 4 This is a block diagram of a wireless charging device in another embodiment of this application;

[0012] Figure 5 This is a circuit diagram of a switching circuit in one embodiment of this application.

[0013] Explanation of reference numerals in the attached drawings: 100, wireless charging device; 110, housing; 111, placement part; 120, first temperature detection module; 130, temperature adjustment module; 131, heating unit; 132, cooling unit; 133, switching circuit; 140, wireless charging module; 150, second temperature detection module; 160, fan module; 170, power supply module; 171, first power supply unit; 172, second power supply unit; 173, third power supply unit; 180, control module. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0015] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0016] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0017] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean 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 according to the specific circumstances.

[0018] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0019] In some cold regions, mobile phones often trigger input power protection mechanisms due to their own low temperature. For example, some phones will limit their input power when their temperature drops below 10 degrees Celsius. In this case, the phone cannot fast charge, resulting in longer charging time and affecting charging efficiency. Among related technologies, the active temperature control solutions for wireless chargers only actively cool down the wireless charger and the phone, but do not have solutions for addressing the phone's low-temperature protection.

[0020] This application dynamically selects a cooling mode or a heating mode based on the phone's temperature to regulate the phone's temperature and minimize charging limitations caused by excessively high or low temperatures, thereby achieving fast charging and battery protection.

[0021] like Figure 1 and Figure 2 As shown, this application embodiment provides a wireless charging device 100 for charging electronic devices. Optionally, the wireless charging device 100 adopts the Qi wireless charging standard to be compatible with most Qi-compliant devices on the market.

[0022] The wireless charging device 100 includes a housing 110, a first temperature detection module 120, a temperature adjustment module 130, and a wireless charging module 140.

[0023] The housing 110 is used to accommodate other components of the wireless charging device 100. The housing 110 has a placement portion 111 for placing the device to be charged. Optionally, the placement portion 111 has a flat surface, thereby providing a relatively large contact area with the device to be charged. The placement portion 111 can stably support the device to be charged, preventing slippage or shaking, and also has good heat conduction. The size of the placement portion 111 can be set according to actual needs to ensure that devices of various sizes, such as mobile phones and tablets, can be stably placed within it.

[0024] A first temperature detection module 120 is disposed in the placement section 111. The first temperature detection module 120 is used to measure the temperature of the device to be charged. The first temperature detection module 120 can be, exemplarily, a thermistor. Thermistors have low manufacturing costs and a fast response speed to temperature changes, enabling them to reflect temperature changes in real time. They are suitable for scenarios requiring rapid temperature detection, such as overheat protection and temperature compensation. Furthermore, thermistors have a simple and compact structure, are easy to install and use, and are suitable for use in designs with limited space. Alternatively, the first temperature detection module 120 can be, exemplarily, a temperature sensor. Temperature sensors typically have high measurement accuracy and a small error range (e.g., ±0.5℃), providing accurate temperature data. They are suitable for scenarios requiring high temperature measurement accuracy, such as temperature monitoring.

[0025] Optionally, the first temperature detection module 120 includes multiple thermistors or temperature sensors, that is, the placement part 111 is provided with multiple thermistors or temperature sensors. By setting multiple temperature detection points, the comprehensiveness and accuracy of temperature measurement can be improved.

[0026] The temperature regulation module 130 is in contact with the placement part 111, and the temperature regulation module 130 has a heating mode and a cooling mode. Exemplarily, the connection method between the temperature regulation module 130 and the placement part 111 can be screwed, bonded, snap-fitted, welded, etc. Since the temperature regulation module 130 is in contact with the placement part 111, heat transfer can occur between them. When the temperature regulation module 130 is in heating mode, the temperature of the placement part 111 increases; when the temperature regulation module is in cooling mode, the temperature of the placement part 111 decreases.

[0027] The wireless charging module 140 is disposed in relation to the placement part 111 and is used to charge the device to be charged. The wireless charging module 140 and the placement part 111 may or may not be in contact, as long as the device to be charged can sense the alternating magnetic field emitted by the wireless charging module 140 when it is placed in the placement part 111.

[0028] When the temperature detected by the first temperature detection module 120 is lower than the first threshold, the temperature regulation module 130 starts the heating mode to heat the placement part 111, thereby heating the device to be charged placed on the placement part 111 so that the device to be charged is at a suitable temperature.

[0029] When the temperature detected by the first temperature detection module 120 is higher than the first threshold, the temperature regulation module 130 starts the cooling mode to cool down the placement part 111, thereby cooling down the device to be charged placed on the placement part 111 so that the device to be charged is at a suitable temperature.

[0030] When the temperature detected by the first temperature detection module 120 is the first threshold, the temperature regulation module 130 can start the heating mode, start the cooling mode, or stop working, depending on the temperature rise rate of the device to be charged.

[0031] The first threshold is the temperature at which the charging efficiency of the device is relatively high. The first threshold can be a specific temperature value, such as 25℃, 30℃, 31℃, 32℃, 33℃, 34℃, 35℃, etc. The first threshold can also be a temperature range, such as 25℃-35℃.

[0032] In this embodiment, the temperature of the placement part 111 is adjusted by the temperature adjustment module 130, thereby adjusting the temperature of the device to be charged, so that the device to be charged maintains a suitable charging temperature, and the charging time of the device to be charged is longer, thus improving the charging efficiency of the device to be charged. Moreover, the negative impact of charging the device to be charged at a suitable temperature on the battery is small, thereby extending the service life of the device to be charged.

[0033] like Figure 2 As shown, in some embodiments, the wireless charging device 100 further includes a control module 180, which is electrically connected to the first temperature detection module 120, the temperature adjustment module 130 and the wireless charging module 140. The control module 180 adjusts the working state of the temperature adjustment module 130 according to the temperature detected by the first temperature detection module 120.

[0034] In some embodiments, the placement portion 111 has a first surface and a second surface disposed opposite to each other. The first surface is used to place the device to be charged, and the second surface is in contact with the temperature regulation module 130. The temperature regulation module 130 and the device to be charged are located on two opposite surfaces, thereby enabling the temperature regulation module 130 to exchange heat with the device to be charged quickly.

[0035] In some embodiments, the placement portion 111 is made of a non-conductive material such as plastic or glass to avoid interfering with the magnetic field of the wireless charging module 140. The portion of the housing 110 other than the placement portion 111 can be made of plastic, resulting in a lighter weight, lower cost, easier processing, and the ability to be injection molded into various complex shapes, while also providing insulation. Alternatively, the portion of the housing 110 other than the placement portion 111 can be made of metal, providing better heat dissipation performance to assist the wireless charging module 140 in heat dissipation, as well as higher strength, better load-bearing capacity, less prone to damage, and a longer service life.

[0036] In some embodiments, the wireless charging module 140 includes a resonant unit and a decoding unit. The control module 180 sends a control signal to control the resonant unit to generate an alternating magnetic field. The resonant unit can also receive communication information sent by the device to be charged. The decoding unit demodulates the communication information and transmits it to the control module 180 as a digital signal. The control module 180 adjusts the output power of the resonant unit according to the communication information, thereby controlling the charging rate.

[0037] like Figure 3 As shown, in some embodiments, the temperature regulation module 130 includes a heating unit 131 and a cooling unit 132. The heating unit 131 is in contact with the placement part 111, and the cooling unit 132 is in contact with the placement part 111. When the heating unit 131 is activated and the cooling unit 132 is deactivated, the temperature regulation module 130 is in heating mode. When the heating unit 131 is deactivated and the cooling unit 132 is activated, the temperature regulation module 130 is in cooling mode. By setting two independent units, the cooling and heating units 131 can work independently, and the temperature can be precisely adjusted according to actual needs. When either the cooling unit 132 or the heating unit 131 fails, the other unit can still work normally, improving the fault tolerance of the wireless charging device 100.

[0038] The cooling unit 132 and the heating unit 131 are arranged at intervals. In this way, the heat generated by the heating unit 131 is difficult to be conducted to the cooling unit 132, and the cold energy generated by the cooling unit 132 is difficult to be conducted to the heating unit 131, thereby reducing the mutual influence between the cooling unit 132 and the heating unit 131.

[0039] Compared to using a fan for heat dissipation, the cooling unit 132 can reduce the temperature below the ambient temperature, effectively cooling even in high-temperature environments, and is less affected by ambient temperature.

[0040] In some embodiments, the heating unit 131 includes a first semiconductor cooler, the hot end of which is in contact with the placement portion 111.

[0041] Semiconductor coolers are solid-state devices, thus operating quietly without noise, with high reliability, long lifespan, requiring no maintenance, and possessing strong resistance to vibration and shock, making them suitable for long-term use. Semiconductor coolers are small and lightweight, making them suitable for integration into small devices. They cool or heat very quickly, typically reaching the target temperature within seconds, making them suitable for applications requiring rapid temperature control. The intensity of cooling or heating can be precisely controlled by adjusting the magnitude and direction of the input current.

[0042] Optionally, the semiconductor cooler includes a PN junction, which generates a Peltier effect by exciting a direct current to achieve cooling. Specifically, the PN junction is one of the most basic component structures in a semiconductor cooler, and it is composed of N-type and P-type semiconductors connected in series via highly conductive plates.

[0043] The working principle of semiconductor cooling is as follows: When a DC voltage is applied to a PN junction, electrons in the P region flow to the N region, while holes in the N region flow to the P region. Due to the resistance of the crystal lattice structure during the diffusion of electrons and holes in both regions, a certain power loss occurs, leading to an increase in the temperature of the semiconductor material. However, the flow directions of electrons and holes are opposite during this process, resulting in a temperature difference across the PN junction. This allows cooling of the environment to be achieved through the flow of electrons within the semiconductor material; therefore, semiconductor coolers can both cool and heat.

[0044] In some other embodiments, the heating unit 131 can be a heating wire, a heating film, a PTC, etc.

[0045] In some embodiments, the cooling unit 132 includes a second semiconductor cooler, the cold end of which is in contact with the placement portion 111.

[0046] It should be noted that while thermoelectric coolers can switch between cooling and heating modes by changing the direction of current, thermoelectric coolers capable of current reversal often have low power and limited cooling capacity, resulting in limited practical effectiveness. This embodiment, however, uses an independent thermoelectric cooler, thereby achieving relatively high cooling power and a better cooling effect.

[0047] In some other embodiments, the cooling unit 132 can be a cooling component such as a fan that can cool down the air.

[0048] like Figure 3 As shown, in some embodiments, the wireless charging device 100 further includes a second temperature detection module 150 and a fan module 160.

[0049] The second temperature detection module 150 can, exemplarily, be a thermistor. Thermistors have low manufacturing costs and a fast response speed to temperature changes, enabling them to reflect temperature changes in real time. They are suitable for scenarios requiring rapid temperature detection, such as overheat protection and temperature compensation. Furthermore, thermistors have a simple and compact structure, are easy to install and use, and are suitable for use in space-constrained designs. Alternatively, the second temperature detection module 150 can also be a temperature sensor. Temperature sensors typically have high measurement accuracy and a small error range (e.g., ±0.5℃), providing accurate temperature data. They are suitable for scenarios requiring high temperature measurement accuracy, such as temperature monitoring.

[0050] Optionally, the second temperature detection module 150 includes multiple thermistors or temperature sensors, that is, multiple thermistors or temperature sensors are set inside the wireless charging device 100. By setting multiple temperature detection points, the comprehensiveness and accuracy of temperature measurement can be improved.

[0051] The second temperature detection module 150 is disposed within the housing 110 and is used to monitor the internal temperature of the wireless charging device 100. The fan module 160 is also disposed within the housing 110 and corresponds to the hot end of the second thermoelectric cooler. The fan module 160 is used to accelerate airflow within the housing 110 to dissipate heat from the hot end of the second thermoelectric cooler and to lower the temperature inside the housing 110. The fan module 160 may, exemplarily, include a fan and a heat-conducting block.

[0052] Understandably, the temperature of the hot end of the second thermoelectric cooler rises during cooling, thus affecting the cooling effect of the cold end. By incorporating the fan module 160, heat can be dissipated from the hot end, thereby improving the cooling effect of the second thermoelectric cooler. Furthermore, the fan module 160 can dissipate heat from the internal components of the wireless charging device 100, preventing heat buildup that could cause the wireless charging device 100 to malfunction.

[0053] Optionally, the fan module 160 starts when the second thermoelectric cooler is working, or when the temperature detected by the second temperature sensor is higher than the second threshold, thereby improving heat dissipation. When the second thermoelectric cooler stops working and the temperature detected by the second temperature sensor is lower than the second threshold, the fan module 160 stops working to save energy.

[0054] Optionally, when the temperature of the second thermoelectric cooler is too high, the second thermoelectric cooler stops working, thereby preventing the second thermoelectric cooler from overheating and burning out.

[0055] Optionally, the housing 110 is provided with air inlets and outlets to facilitate air circulation and improve heat dissipation.

[0056] In some embodiments, the control module 180 is configured to adjust the speed of the fan module 160 according to the power of the second semiconductor cooler. The fan module 160 can control its speed according to PWM signals with different duty cycles provided by the control module 180, thereby dynamically balancing the temperature of the internal components.

[0057] like Figure 3 As shown, in some embodiments, the temperature regulation module 130 further includes a switching circuit 133, and the heating unit 131 and the cooling unit 132 are both electrically connected to the switching circuit 133. The wireless charging device 100 also includes a control module 180, which is electrically connected to the switching circuit 133.

[0058] When the control module 180 outputs the first signal, the switching circuit 133 is connected to the heating unit 131 and disconnected from the cooling unit 132. When the control module 180 outputs the second signal, the switching circuit 133 is disconnected from the heating unit 131 and connected to the cooling unit 132.

[0059] The control module 180 can control the on / off state of the heating unit 131 and the cooling unit 132 through the switching circuit 133, so as to facilitate the adjustment of the temperature of the placement part 111.

[0060] like Figure 4 As shown, in some embodiments, the wireless charging device 100 further includes a power supply module 170, which includes a first power supply unit 171, a second power supply unit 172, and a third power supply unit 173. The first power supply unit 171 is electrically connected to the wireless charging module 140 and supplies power to the wireless charging module 140. The second power supply unit 172 is electrically connected to the fan module 160 and supplies power to the fan module 160. The third power supply unit 173 is electrically connected to the temperature regulation module 130 and supplies power to the temperature regulation module 130.

[0061] The first power supply unit 171 can be, by way of example, a buck-boost converter circuit; the second power supply unit 172 can be, by way of example, a buck converter circuit; and the third power supply unit 173 can be, by way of example, a buck converter circuit.

[0062] The power supply unit is designed independently, which ensures stable power supply to the wireless charging module 140, fan module 160 and temperature regulation module 130, reduces power coupling between modules, reduces electromagnetic interference, and can provide appropriate voltage and current according to the actual needs of each module, accurately matching their respective needs and avoiding energy waste.

[0063] like Figure 4As shown, in some embodiments, the control module 180 is electrically connected to the power supply module 170. The control module 180 is configured to adjust the power supply voltage of the third power supply unit 173 based on the temperature detected by the first temperature detection module 120. When the temperature detected by the first temperature detection module 120 differs significantly from the first threshold, the control module 180 increases the power supply voltage of the third power supply unit 173 to increase the voltage of the temperature regulation module 130, thereby increasing the output power of the temperature regulation module 130 and rapidly regulating the temperature of the device to be charged, bringing the temperature of the device close to the first threshold. When the temperature detected by the first temperature detection module 120 differs significantly from the first threshold, the control module 180 decreases the power supply voltage of the third power supply unit 173 to decrease the voltage of the temperature regulation module 130, thereby reducing the output power of the temperature regulation module 130 and maintaining the temperature of the device to be charged near the first threshold, achieving a dynamic temperature balance.

[0064] like Figure 4 As shown, in some embodiments, the control module 180 is electrically connected to the fan module 160, and the control module 180 is configured to adjust the speed of the fan module 160 based on the temperature detected by the second temperature detection module 150. When the temperature inside the housing 110 is high, the control module 180 increases the speed of the fan module 160 to improve heat dissipation. When the temperature inside the housing 110 is low, the control module 180 decreases the speed of the fan module 160 to save energy and reduce noise.

[0065] like Figure 5 As shown, in some embodiments, the switching circuit 133 includes multiple MOSFETs and transistors. When the first temperature detection module 120 detects that the temperature of the device to be charged is lower than a first threshold, the control module 180 controls transistor Q1 to turn on, thereby controlling MOSFET Q3 to turn on, enabling the first thermoelectric cooler to operate. Simultaneously, the control module 180 controls transistor Q2 to turn off, thereby controlling MOSFET Q4 to turn off, cutting off the power supply to the second thermoelectric cooler and ensuring that the first and second thermoelectric coolers do not interfere with each other. During the temperature rise process, the control module 180 controls the power supply voltage of the first thermoelectric cooler according to the temperature change rate detected by the first temperature detection module 120, achieving the effect of slow temperature compensation and fine temperature control.

[0066] When the first temperature detection module 120 detects that the temperature of the device to be charged is close to the first threshold, the control module 180 controls the transistor Q1 to turn off, thereby controlling the MOSFET Q3 to turn off, so as to cut off the power supply of the first semiconductor cooler. At the same time, it controls the transistor Q2 to turn on, thereby controlling the MOSFET Q4 to turn on, so that the second semiconductor cooler works. The second semiconductor cooler controls the temperature of the device to be charged to maintain the first threshold, so as to maintain high-power charging as much as possible and not trigger the battery cell protection effect of the device to be charged.

[0067] The feedback resistor R4 is connected to the PWM_TEC control signal. The DC component varies depending on the PWM duty cycle. After passing through the RC filter formed by resistor R4 and capacitor C2, only the DC component remains at the connection point of resistors R4 and R3. This DC component then forms a feedback voltage with the voltage divider point of resistors R2 and R1, controlling the output voltage and thus the output power. The cooling / heating capacity of the temperature regulation module 130 varies under different power levels. At low power, its cooling / heating capacity is slightly weaker. Increasing the input power can enhance the cooling / heating capacity of the temperature regulation module 130, enabling rapid control of the phone's contact surface temperature or slow balancing of the phone's temperature.

[0068] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A wireless charging device, characterized by, include: The housing has a placement section for placing the device to be charged; A first temperature detection module is disposed in the placement part and is used to measure the temperature of the device to be charged; A temperature control module is in contact with the placement part, and the temperature control module has a heating mode and a cooling mode; A wireless charging module is provided corresponding to the placement part and is used to charge the device to be charged; Specifically, when the temperature detected by the first temperature detection module is lower than the first threshold, the temperature adjustment module activates the heating mode; when the temperature detected by the first temperature detection module is higher than the first threshold, the temperature adjustment module activates the cooling mode.

2. The wireless charging device of claim 1, wherein, The temperature regulation module includes: The heating unit is in contact with the placement part; A cooling unit is in contact with the placement part and is spaced apart from the heating unit; When the heating unit is activated and the cooling unit is deactivated, the temperature regulation module is in the heating mode; when the heating unit is deactivated and the cooling unit is activated, the temperature regulation module is in the cooling mode.

3. The wireless charging device of claim 2, wherein, The temperature regulation module further includes a switching circuit, and the heating unit and the cooling unit are both electrically connected to the switching circuit. The wireless charging device further includes a control module, which is electrically connected to the switching circuit. When the control module outputs the first signal, the switching circuit is connected to the heating unit and disconnected from the cooling unit; when the control module outputs the second signal, the switching circuit is disconnected from the heating unit and connected to the cooling unit.

4. The wireless charging device of claim 2, wherein, The heating unit includes a first semiconductor cooler, the hot end of which is in contact with the placement portion; and / or The cooling unit includes a second semiconductor cooler, the cold end of which is in contact with the placement portion.

5. The wireless charging device of claim 2, wherein, The cooling unit includes a second semiconductor cooler, the cold end of which is in contact with the placement portion. The wireless charging device further includes: The second temperature detection module is disposed inside the housing; A fan module is disposed inside the housing and corresponds to the hot end of the second semiconductor cooler; The fan module starts when the second thermoelectric cooler is activated, or when the temperature detected by the second temperature sensor is higher than the second threshold; the fan module stops working when the second thermoelectric cooler stops working and the temperature detected by the second temperature sensor is lower than the second threshold.

6. The wireless charging device of claim 5, wherein, The wireless charging device also includes a control module, which is electrically connected to the second semiconductor cooler, the fan module, and the second temperature detection module. The control module is configured to adjust the speed of the fan module according to the power of the second semiconductor cooler.

7. The wireless charging device of claim 5, wherein, The wireless charging device further includes a power supply module, which comprises: The first power supply unit is electrically connected to the wireless charging module and is used to supply power to the wireless charging module. The second power supply unit is electrically connected to the fan module and is used to supply power to the fan module. The third power supply unit is electrically connected to the temperature regulation module and is used to supply power to the temperature regulation module.

8. The wireless charging device according to claim 7, characterized in that, The wireless charging device also includes a control module, which is electrically connected to the power supply module. The control module is configured to adjust the power supply voltage of the third power supply unit according to the temperature of the first temperature detection module.

9. The wireless charging device of claim 1, wherein, The placement part has a first surface and a second surface arranged opposite to each other. The first surface is used to place the device to be charged, and the second surface is in contact with the temperature regulation module.

10. The wireless charging device of claim 1, wherein, The first temperature detection module includes a plurality of thermistors disposed in the placement portion.

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