Wireless charging device and control method thereof

Abstract

The present disclosure provides a wireless charging device and a control method thereof. The wireless charging device includes a housing, a wireless charging component, a first heat dissipation component, and a second heat dissipation component. The outer surface of the housing has a wireless charging position, and the wireless charging position is used to place the device to be charged; the wireless charging component is arranged in the housing and corresponds to the wireless charging position, and the wireless charging component is used to wirelessly charge the device to be charged; the first heat dissipation component is arranged in the housing and is located on one side of the wireless charging component, and the first heat dissipation component is used to dissipate heat for the wireless charging component; the second heat dissipation component is located on one side of the wireless charging position, and the second heat dissipation component is used to generate wind blowing toward the wireless charging position, so as to dissipate heat for the device to be charged located on the wireless charging position. The technical solution disclosed in the present disclosure can improve the charging speed of wireless charging.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless charging, and in particular to a wireless charging device and a control method thereof. Background Art

[0002] Mobile electronic devices provide great convenience for people's lives, so the charging technology for mobile electronic devices is of particular importance to users and manufacturers. In charging technology, charging speed is particularly important. Currently, there are two main charging solutions for electronic devices: wired charging and wireless charging. Among them, wireless charging is favored by users because it gets rid of the charging cable between the electronic device and the charging process.

[0003] However, during wireless charging, the coils in the charging base and the electronic devices will generate a lot of heat due to power conversion. When the electronic devices are overheated, the charging power will drop to ensure the charging safety of the electronic devices, but this will cause a decrease in charging speed.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention

[0005] One object of the present disclosure is to increase the charging speed of wireless charging.

[0006] In order to solve the above technical problems, the present disclosure adopts the following technical solutions:

[0007] According to one aspect of the present disclosure, the present disclosure provides a wireless charging device, including:

[0008] A housing, wherein the outer surface of the housing has a wireless charging position, and the wireless charging position is used for placing a device to be charged;

[0009] A wireless charging component is disposed in the housing and corresponds to the wireless charging position, and is used to wirelessly charge the device to be charged;

[0010] a first heat dissipation component, disposed in the housing and located on one side of the wireless charging component, the first heat dissipation component being used to dissipate heat for the wireless charging component;

[0011] The second heat dissipation component is located at one side of the wireless charging position, and the second heat dissipation component is used to generate wind blowing toward the wireless charging position to dissipate heat for the device to be charged located on the wireless charging position.

[0012] The wireless charging device disclosed in the present invention utilizes the first heat dissipation component to dissipate heat for the wireless charging component, thereby reducing the temperature rise of the wireless charging component, prolonging the high-efficiency working state of the wireless charging component, and also reducing the heat transferred from the wireless charging base to the device to be charged. In addition, the present invention utilizes the second heat dissipation component to dissipate heat for the device to be charged, thereby reducing the temperature rise of the device to be charged, and providing a suitable temperature environment for the device to be charged to continue in a high charging power mode. Therefore, the disclosed solution can prolong the charging time of the wireless charging device charging the device to be charged at a high charging power, thereby improving the charging speed.

[0013] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0015] Figure 1 It is a schematic diagram of the corresponding relationship between the charging power and the temperature of the device to be charged in the related art;

[0016] Figure 2 is a schematic structural diagram of a wireless charging device according to an embodiment;

[0017] Figure 3 yes Figure 2 A cross-sectional view of

[0018] Figure 4 is a diagram showing a usage state of a wireless charging device according to an embodiment;

[0019] Figure 5 yes Figure 4 A schematic diagram of the structure from another angle;

[0020] Figure 6 yes Figure 4 A schematic diagram of the structure from another angle;

[0021] Figure 7 is a flow chart of a control method of a wireless charging device according to an embodiment;

[0022] Figure 8 It is the corresponding relationship curve between the power of the semiconductor refrigeration module and the temperature of the wireless charging coil.

[0023] The following are the descriptions of the reference numerals:

[0024] 1. Shell; 11. First shell; 111. Wireless charging position; 111. First air inlet; 112. Air outlet; 113. Installation position 113 of the first fan; 12. Second shell; 121. Second air inlet; 122. Air guide port; 123. Partition; 124. Installation position 124 of the second fan;

[0025] 2. Wireless charging component; 21. Wireless charging coil; 3. First heat dissipation component; 31. Semiconductor refrigeration module; 311. Cold side; 312. Hot side; 32. Heat conducting member; 321. Heat dissipation channel; 4. Second heat dissipation component; 41. Mainboard; 5. Device to be charged. DETAILED DESCRIPTION

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0027] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0028] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] The preferred embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings of this specification.

[0031] The present disclosure provides an electronic device, which may be a smart terminal or mobile terminal device equipped with a battery power supply system, such as an e-book reader, a smart wearable device, a mobile power source (such as a power bank, a travel charger), an electronic cigarette, a wireless mouse, a wireless keyboard, a wireless headset, a Bluetooth speaker, and other rechargeable electronic devices with a charging function.

[0032] The wireless charging systems in the related technologies are described below.

[0033] During the wireless charging process, a power supply device (such as an adapter) is generally connected to a wireless charging device (such as a wireless charging base), and the output power of the power supply device is transmitted to the electronic device in a wireless manner (such as an electromagnetic signal or electromagnetic wave) through the wireless charging device to wirelessly charge the electronic device.

[0034] According to different wireless charging principles, wireless charging methods are mainly divided into three methods: magnetic coupling (or electromagnetic induction), magnetic resonance, and radio waves. At present, the mainstream wireless charging standards include the QI standard, the Power Matters Alliance (PMA) standard, and the Alliance for Wireless Power (A4WP). Both the QI standard and the PMA standard use magnetic coupling for wireless charging.

[0035] See also Figure 1 , Figure 1It is a schematic diagram of the corresponding relationship between the charging power and the temperature of the device to be charged 5 in the related art. During the wireless charging process, when the temperature inside the device to be charged 5 is within a temperature range less than temperature t (for example, below 35°C), the wireless charging device charges the device to be charged 5 in a high-power mode, and the battery of the device to be charged 5 can be fully charged in the shortest time. However, as the charging progresses, the temperature inside the device to be charged 5 will become higher and higher. When the temperature inside the device to be charged 5 is high (for example, exceeding t1), the device to be charged 5 needs to be charged in a medium-power mode. When the temperature inside the device to be charged 5 is too high (for example, exceeding t2, t2 can be a value greater than 40°C), the wireless charger charges the device to be charged 5 in a low-power mode to alleviate the situation where the internal temperature of the device to be charged 5 is too high, thereby correspondingly causing an increase in the charging time.

[0036] The wireless charging device of the present disclosure will be described in the following embodiments.

[0037] See also Figure 2 , Figure 2 It is a schematic diagram of the structure of a wireless charging device according to an embodiment. In one embodiment, the wireless charging device includes a housing 1, a wireless charging component, a first heat dissipation component 3, and a second heat dissipation component 4. The outer surface of the housing 1 has a wireless charging position 111, and the wireless charging position 111 is used to place the device 5 to be charged; the wireless charging component is arranged in the housing 1 and corresponds to the wireless charging position 111, and the wireless charging component is used to wirelessly charge the device 5 to be charged; the first heat dissipation component 3 is arranged in the housing 1 and is located on one side of the wireless charging component, and the first heat dissipation component 3 is used to dissipate heat for the wireless charging component; the second heat dissipation component 4 is located on one side of the wireless charging position 111, and the second heat dissipation component 4 is used to generate wind blowing toward the wireless charging position 111, so as to dissipate heat for the device 5 to be charged located on the wireless charging position 111.

[0038] In one embodiment, the wireless charging position 111 is a charging plane disposed on the surface of the housing 1. The size and shape of the charging plane can be set according to the shape of the wireless charging component, or can be a fixed shape, such as square, oval, circular, etc. The wireless charging position 111 is a charging slot disposed on the surface of the housing 1. When the wireless charging position 111 is in the shape of a slot, the shape and size of the slot should match the device to be charged 5, or be sufficient to accommodate the device to be charged 5. Of course, in other embodiments, the wireless charging position 111 can also have some limiting structures to limit the charging setting to prevent the receiving coil of the device to be charged 5 from not corresponding to the position of the transmitting coil of the wireless charging component, thereby affecting the charging efficiency.

[0039] In the present disclosure, the principle of electromagnetic induction can be used to design a wireless charging component. In a specific embodiment, the wireless charging component may include a control unit, a communication unit, and a wireless charging coil 21 (transmitting coil). The communication unit is used to communicate with the device to be charged 5 to obtain information such as the charging protocol supported by the device to be charged 5, and the allowed and required charging power. The control unit is used to control the transmission power of the wireless charging coil 21.

[0040] See also Figure 3 , Figure 3 yes Figure 2 A cross-sectional view of . During the wireless charging process, when the wireless coil of the device to be charged 5 corresponds to the wireless charging coil 21 of the wireless charging device and the wireless charging requirements are met, the wireless charging component enters the fast charging mode. At this time, when the current flows through the wireless charging coil 21, it will cause the wireless charging coil 21 to heat up. In the present disclosure, the first heat dissipation component 3 is used to dissipate heat from the wireless charging coil 21 in the wireless charging component. In one embodiment, the first heat dissipation component 3 includes a semiconductor refrigeration module 31 and a heat conductor 32; the semiconductor refrigeration module 31 has a cold side 311 and a hot side 312; the wireless charging component includes a wireless charging coil 21; the semiconductor refrigeration module 31 is located on the side of the wireless charging coil 21 away from the wireless charging position 111, and the cold side 311 is attached to the wireless charging coil 21, and the hot side 312 is in contact with the heat conductor 32.

[0041] Here, the working principle of the semiconductor refrigeration module 31 is explained. The semiconductor refrigeration module 31 (ThermoElectric Cooler) is made by using the Peltier effect of semiconductor materials. The so-called Peltier effect refers to the phenomenon that when a direct current passes through a couple composed of two semiconductor materials, one end absorbs heat and the other end releases heat. Heavily doped N-type and P-type bismuth telluride are mainly used as semiconductor materials for the semiconductor refrigeration module 31. The bismuth telluride elements are electrically connected in series and generate heat in parallel. The semiconductor refrigeration module 31 includes some P-type and N-type pairs (groups), which are connected together through electrodes and sandwiched between two ceramic electrodes; when current flows through the semiconductor refrigeration module 31, the heat generated by the current will be transferred from one side of the semiconductor refrigeration module 31 to the other side, and a "hot side 312" and a "cold side 311" will be generated on the semiconductor refrigeration module 31. This is the heating and cooling principle of the semiconductor refrigeration module 31.

[0042] This embodiment utilizes the working principle of the semiconductor refrigeration module 31, and utilizes the cold side 311 of the semiconductor refrigeration module 31 to contact the wireless charging coil 21 to absorb the heat generated by the wireless charging coil 21, so that the wireless coil always maintains a low temperature and continues to work efficiently. In addition, since the temperature of the wireless charging coil 21 is effectively controlled, the wireless charging coil 21 will not transfer too much heat to the device to be charged 5, which is conducive to controlling the speed and temperature rise of the temperature of the device to be charged 5.

[0043] In order to make the semiconductor refrigeration module 31 work efficiently, in this embodiment, a heat conductor 32 is also provided to timely conduct heat from the hot side 312 of the semiconductor refrigeration module 31. Schematically, one side of the heat conductor 32 contacts the hot side 312 of the semiconductor refrigeration module 31, and the other side contacts the bottom of the housing 1. The heat is dissipated to the outside through the bottom of the housing 1. The heat conductor 32 can be a radiator made of metal.

[0044] Schematically, the wireless charging coil 21 is roughly circular, so the semiconductor refrigeration module 31 and the heat conductor 32 are also roughly circular and have a size comparable to that of the wireless charging coil 21 to increase the heat dissipation of the wireless charging coil 21 and make the temperature on the wireless charging coil 21 roughly balanced.

[0045] See also Figures 3 to 6 .in, Figure 4 is a diagram showing a usage state of a wireless charging device according to an embodiment; Figure 5 yes Figure 4 A schematic diagram of the structure from another angle; Figure 6 yes Figure 4 Further, in order to improve the efficiency of heat dissipation on the heat conducting member 32, in one embodiment, the heat conducting member 32 is provided with a heat dissipation channel 321 extending in the up-down direction; the first heat dissipation component 3 also includes a first fan, the first fan ( Figure 3 The first fan installation position 113 is shown in the figure and installed in the heat dissipation channel 321; a first air inlet 111 is provided at the bottom of the housing 1 and at a position corresponding to the heat dissipation channel 321, and an air outlet 112 is provided at the side of the housing 1. The heat dissipation channel 321 does not have to extend strictly in the vertical direction. The heat dissipation channel 321 can be provided in the middle of the heat conducting member 32, and the heat dissipation channel 321 can be coaxial with the heat conducting member 32.

[0046] The first fan can be an axial fan or a centrifugal fan. The first fan is housed in the heat dissipation channel 321 and can be fixed to the bottom surface of the housing 1. A plurality of heat dissipation holes are provided in the area at the bottom of the housing 1 corresponding to the bottom of the heat dissipation channel 321. The air outlet 112 can also include a plurality of air outlet holes. Figure 5Taking the direction in as a reference, air outlets 112 are provided on the left and right sides of the housing 1 to quickly dissipate heat.

[0047] The first fan draws air from multiple heat dissipation holes into the housing 1. After the air flows through the surface of the heat-conducting member 32 for heat exchange, the heat is taken out from the air outlet 112 located on the side of the housing 1. As a result, a good air circulation channel is formed in the cavity inside the housing 1, which effectively controls the temperature inside the housing 1 from rising too high or too fast, thereby ensuring that the wireless coil is always in an efficient working mode and improving the charging efficiency. It also reduces the heat transferred from the housing 1 to the device to be charged 5, thereby reducing the temperature rise speed and temperature rise amount of the device to be charged 5, thereby extending the duration of fast charging.

[0048] Furthermore, in order to improve the working intelligence of the semiconductor refrigeration module 31 and reduce the power consumption of the wireless charging device, in one embodiment, the wireless charging device further comprises a control circuit, which is electrically connected to the semiconductor refrigeration module 31; the control circuit is used to start and shut down the semiconductor refrigeration module 31, and / or the control circuit is used to adjust the working current of the semiconductor refrigeration module 31.

[0049] The control circuit can be a control unit of the wireless charging component. Of course, it can also be an independent single-chip microcomputer, MCU, etc. The control circuit has three working modes here. The first is that the control circuit starts / turns off the semiconductor refrigeration module 31 when the corresponding conditions are met; the second is that the semiconductor refrigeration module 31 is always in working state, and the control circuit adjusts the working current of the semiconductor refrigeration module 31 to adjust the refrigeration efficiency of the semiconductor refrigeration module 31. The third is a combination of the previous two methods, which can start / turn off the semiconductor refrigeration module 31 and adjust the working current of the semiconductor refrigeration module 31 according to the temperature conditions during the charging process.

[0050] Illustratively, the wireless charging device further includes a power supply circuit for supplying power to the semiconductor refrigeration module 31 , and the control circuit may control the operation of the semiconductor refrigeration module 31 by adjusting the output current and output power of the power supply circuit.

[0051] See also Figure 7 , Figure 7 1 is a flow chart of a control method of a wireless charging device according to an embodiment. In the following embodiment, a control method of a semiconductor refrigeration module 31 is described. The control method includes:

[0052] 60, obtaining the temperature of the wireless charging coil 21 or the device to be charged 5;

[0053] 61, when the obtained temperature is greater than or equal to the first preset temperature, start the semiconductor refrigeration module 31;

[0054] 62. When the obtained temperature is less than or equal to a second preset temperature, turn off the semiconductor refrigeration module 31, wherein the second preset temperature is less than the first preset temperature.

[0055] In one embodiment, the control circuit controls the operation of the semiconductor refrigeration module 31 according to the temperature of the wireless charging coil 21. Specifically, the wireless charging device further includes a temperature sensor, which is connected to the wireless charging coil 21 to detect the temperature of the wireless charging coil 21; the control circuit is electrically connected to the temperature sensor to control the operation of the semiconductor refrigeration module 31 according to the temperature detected by the temperature sensor.

[0056] See also Figure 8 , Figure 8 It is a curve of the corresponding relationship between the power of the semiconductor refrigeration module 31 and the temperature of the wireless charging coil 21. When the wireless charging component starts working, the wireless charging coil 21 will generate a large amount of Joule heat due to impedance reasons. As time accumulates, the heat will cause the temperature of the wireless coil to gradually increase. When the temperature sensor detects that the temperature of the wireless charging coil 21 reaches the temperature T2, it will feed back the instruction to the control circuit, and the control circuit will control the semiconductor refrigeration module 31 to start working to export the heat on the wireless charging coil 21. The semiconductor refrigeration module 31 can continuously output cooling at a constant power P1 to reduce the temperature of the wireless charging coil 21 to the temperature T1. At this time, the temperature sensor senses that the temperature of the wireless charging coil 21 reaches the temperature T1, and feeds back to the control circuit. The control circuit controls the semiconductor refrigeration module 31 to stop working, so as to avoid the power loss caused by the continuous operation of the semiconductor refrigeration module 31 when there is no need to cool the wireless charging coil 21.

[0057] In this embodiment, the temperature sensor can monitor the temperature of the wireless charging coil 21 in real time. When the semiconductor refrigeration module 31 stops working, the temperature of the wireless coil may slowly rise again. At this time, the working mode of the semiconductor refrigeration module 31 is dynamically adjusted according to the coil temperature detected by the temperature sensor to achieve a balance between the temperature and efficiency of the wireless charging coil 21, thereby achieving continuous high power output of the wireless charging coil 21 and meeting the requirements of fast charging.

[0058] In another embodiment, the wireless charging device further includes a communication circuit, and the communication circuit is used to receive the temperature of the device to be charged 5; the control circuit is electrically connected to the communication circuit to control the operation of the semiconductor refrigeration module 31 according to the temperature received by the communication circuit. Generally, the device to be charged 5 has a temperature sensor for detecting its internal or battery temperature. The temperature sensor transmits the detected internal temperature or battery temperature of the device to be charged 5 to the control unit of the wireless charging device through the Internet of Things system or the communication circuit.

[0059] Similarly, when the device to be charged 5 is wirelessly charged, the battery and the receiving coil in the device to be charged 5 will heat up. When the temperature sensor detects that the temperature in the device to be charged 5 reaches the temperature T2, it is transmitted to the control circuit of the wireless charging device through its own communication circuit and the communication circuit of the wireless charging device. The control circuit controls the semiconductor refrigeration module 31 to start working to remove the heat from the wireless charging coil 21. The semiconductor refrigeration module 31 can continuously output cooling at a constant power to reduce the temperature in the device to be charged 5 to the temperature T1. At this time, the temperature sensor senses that the temperature in the device to be charged 5 reaches the temperature T1, and feeds back to the control circuit of the wireless charging device. The control circuit controls the semiconductor refrigeration module 31 to stop working to avoid the power loss caused by the continuous operation of the semiconductor refrigeration module 31 when there is no need to cool the wireless charging coil 21.

[0060] Furthermore, in one embodiment, a step-by-step charging current control is implemented on the semiconductor refrigeration module 31 .

[0061] Specifically, after the step of starting the semiconductor refrigeration module 31 when the obtained temperature is greater than or equal to the first preset temperature, the method further includes:

[0062] Monitoring the startup time of the semiconductor refrigeration module 31;

[0063] When the startup time of the semiconductor refrigeration module 31 is greater than or equal to the first preset time, and the obtained temperature is greater than or equal to the first preset temperature, the working current of the semiconductor refrigeration module 31 is increased.

[0064] For example, when the temperature sensor detects that the temperature of the wireless charging coil 21 reaches the temperature T2, the control circuit controls the semiconductor refrigeration module 31 to start working. The semiconductor refrigeration module 31 starts to work with a constant working current. However, if the temperature continues to rise or does not drop after a period of time (for example, 10 minutes), the control circuit will increase the working current of the semiconductor refrigeration module 31 to improve the cooling efficiency of the semiconductor refrigeration module 31, so that the temperature of the wireless charging coil 21 can be effectively controlled.

[0065] It should be noted here that for the step-by-step control method of the semiconductor refrigeration module 31, the semiconductor refrigeration module 31 has multiple working current gears. The control circuit dynamically adjusts the working current of the semiconductor refrigeration module 31 according to the detection results of the temperature sensor and the working time of the semiconductor refrigeration module 31, so that the semiconductor refrigeration module 31 can achieve a balance between working efficiency and power saving.

[0066] In the present disclosure, the second heat dissipation component 4 is used to dissipate heat for the device to be charged 5 to reduce the temperature inside the device to be charged 5 and the battery temperature of the device to be charged 5. The second heat dissipation component 4 can be arranged outside the housing 1 and combined with the housing 1 by a fixed connection or a detachable connection. The second heat dissipation component 4 can also be arranged inside the housing 1. In one embodiment, the housing 1 includes a first shell 11 and a second shell 12, the first shell 11 and the second shell 12 are connected, the wireless charging coil 21 is accommodated in the first shell 11, and the second heat dissipation component 4 is accommodated in the second shell 12.

[0067] The first shell 11 and the second shell 12 may be fixedly connected or detachably connected. In one embodiment, the first shell 11 and the second shell 12 are integrally formed, and the first shell 11 is located on one side of the second shell 12. Figure 2 The second shell 12 is arranged in the left-right direction with the first shell 11, or the second shell 12 is annular to surround the outer side of the first shell 11 as a whole, and blows out wind from all directions to dissipate the heat of the charging device 5.

[0068] There may be only one second housing 12, or multiple second housings 12 may be provided, and multiple second housings 12 are arranged at intervals around the first housing 11 to blow air from all directions to dissipate heat from the device to be charged 5. Each second housing 12 has a second heat dissipation component 4. The second heat dissipation components 4 in each second housing 12 may work simultaneously or at different times according to the received control signal.

[0069] In one embodiment, the second heat dissipation assembly 4 also includes a second fan, and a second air inlet 121 is provided on the side of the second shell 12; the top surface of the second shell 12 protrudes from the top surface of the first shell 11, and a step portion is formed at the junction of the top surface of the second shell 12 and the top surface of the first shell 11; an air guide port 122 is provided on the step portion, and the air guide port 122 is used to guide the wind blown out from the second fan to the wireless charging position 111.

[0070] The air guide 122 can extend in a long strip, and the wall used to form the air guide 122 is an inclined surface; in order to allow the wind blown out from the air guide 122 to be dispersed and blown to various parts of the device to be charged 5, the wall corresponding to the air guide 122 is divided into multiple sections, and the inclinations of the multiple sections of the wall are different. Schematically, the wall forming the air guide 122 can be curved or serrated. Of course, the air guide 122 can also be set in the style of multiple air guide holes.

[0071] See also Figure 2 The top surface of the second housing 12 protrudes from the top surface of the first housing 11, so a step is formed at the junction of the top surfaces of the first housing 11 and the second housing 12. The step has a vertical wall, and at least one air guide 122 can be provided, which is provided at any position such as the bottom, middle or bottom of the vertical wall to form airflows of different heights to dissipate heat for the device to be charged 5 in a three-dimensional manner. In a specific embodiment, there are two air guides 122, which are arranged at intervals along the bottom of the vertical wall.

[0072] The wireless charging device has a main board 41, on which the relevant circuits of the wireless charging device are laid, and the control circuit in the above embodiment can be laid on the main board 41. In order to increase the heat source in the first shell 11 and improve the space utilization rate in the second shell 12. In one embodiment, a partition 123 extending in the horizontal direction is provided in the second shell 12 to separate the cavity in the second shell 12 into two sub-cavities in the vertical direction; the second fan is arranged in the sub-cavity located at the top, and the wireless charging device has a main board 41, and the main board 41 is arranged in the sub-cavity located at the bottom.

[0073] The second air inlet 121 is arranged on the side of the second housing 12, and there is a gap between the side and the partition 123. Therefore, the wind entering from the second air inlet 121 can be blown into the upper and lower sub-cavities at the same time. The wind entering the upper sub-cavity passes through the second fan and is blown out from the air guide 122 to dissipate heat for the device to be charged 5. The wind entering the lower sub-cavity blows toward the main control board, thereby dissipating heat for the main control board. Therefore, the setting of the partition 123 and the air inlet in this embodiment improves the heat dissipation capacity of the wireless charging device.

[0074] The wireless charging device of the present disclosure utilizes the first heat dissipation component 3 to dissipate heat for the wireless charging component, so that the wireless charging component can continue to work in a highly efficient state, while also reducing the heat transferred from the wireless charging base to the device to be charged 5. The present disclosure also utilizes the second heat dissipation component 4 to dissipate heat for the device to be charged 5, so as to reduce the temperature rise of the device to be charged 5, and provide a suitable temperature environment for the device to be charged 5 to continue high-power fast charging, so that the device to be charged 5 can continue to be charged in the fast charging mode. Therefore, the technical solution of the present disclosure effectively improves the charging speed of wireless charging.

[0075] The present disclosure also provides a schematic diagram of a computer-readable storage medium. The computer-readable storage medium may be a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto. In the present disclosure, the readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, apparatus, or device.

[0076] The computer-readable medium carries one or more programs. When the one or more programs are executed by a device, the computer-readable medium implements the following Figure 7 The control method of the wireless charging device shown.

[0077] Although the present disclosure has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present disclosure can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A wireless charging device, characterized in that: include: A housing, wherein the outer surface of the housing has a wireless charging position, and the wireless charging position is used for placing a device to be charged; A wireless charging component is disposed in the housing and corresponds to the wireless charging position. The wireless charging component is used to wirelessly charge the device to be charged, and the wireless charging component includes a wireless charging coil; A first heat dissipation component is disposed in the housing and located on one side of the wireless charging component, the first heat dissipation component is used to dissipate heat for the wireless charging component, and the first heat dissipation component includes a semiconductor refrigeration module; A second heat dissipation component is located at one side of the wireless charging position, and the second heat dissipation component is used to generate wind blowing toward the wireless charging position to dissipate heat for the device to be charged located on the wireless charging position; Wherein, the wireless charging device further includes a temperature sensor and a communication circuit, wherein the temperature sensor is connected to the wireless charging coil to detect the temperature of the wireless charging coil, and the communication circuit is used to receive the internal temperature or battery temperature sent by the device to be charged; wherein the device to be charged has a temperature sensor for the device to be charged inside, and when the temperature sensor for the device to be charged detects that the internal temperature or the battery temperature of the device to be charged reaches a second temperature, the internal temperature or the battery temperature is communicated to the control circuit of the wireless charging device through the communication circuit of the device to be charged and the communication circuit of the wireless charging device; The control circuit is electrically connected to the wireless charging device communication circuit to control the operation of the semiconductor refrigeration module according to the temperature received by the wireless charging device communication circuit, so that the semiconductor refrigeration module continuously outputs refrigeration at a constant power until the temperature of the device to be charged drops to a first temperature; The control circuit is electrically connected to the temperature sensor of the wireless charging device to control the operation of the semiconductor refrigeration module according to the temperature detected by the temperature sensor of the wireless charging device, so that when the temperature sensor senses that the temperature of the device to be charged drops to the first temperature, the temperature sensor provides feedback to the control circuit of the wireless charging device, so that the control circuit controls the semiconductor refrigeration module to stop working; Among them, when the temperature sensor of the wireless charging device detects that the temperature of the wireless charging coil is greater than or equal to a first preset temperature, the semiconductor refrigeration module is started and the startup time of the semiconductor refrigeration module is monitored; when the startup time of the semiconductor refrigeration module is greater than or equal to the first preset time, and the obtained temperature is still greater than or equal to the first preset temperature, the working current of the semiconductor refrigeration module is increased.

2. The wireless charging device according to claim 1, characterized in that: The first heat dissipation component further comprises a heat conducting member; the semiconductor refrigeration module has a cold side and a hot side; The semiconductor refrigeration module is located on a side of the wireless charging coil away from the wireless charging position, and the cold side is attached to the wireless charging coil, and the hot side is in contact with the heat conductive member.

3. The wireless charging device according to claim 2, characterized in that: The housing has a top and a bottom, and the wireless charging position is located on the top surface; The heat conducting member is provided with a heat dissipation channel extending in the up-down direction; the first heat dissipation assembly further comprises a first fan, and the first fan is installed in the heat dissipation channel; A first air inlet is provided at the bottom of the housing and at a position corresponding to the heat dissipation channel, and an air outlet is provided at a side of the housing.

4. The wireless charging device according to claim 2, characterized in that: The wireless charging device also has a control circuit, which is electrically connected to the semiconductor refrigeration module; the control circuit is used to start and shut down the semiconductor refrigeration module, and / or the control circuit is used to adjust the working current of the semiconductor refrigeration module.

5. The wireless charging device according to claim 1, characterized in that: The housing includes a first shell and a second shell, the first shell is connected to the second shell, the wireless charging coil is accommodated in the first shell, and the second heat dissipation component is accommodated in the second shell.

6. The wireless charging device according to claim 5, characterized in that: The first shell and the second shell are integrally formed, and the first shell is located at one side of the second shell.

7. The wireless charging device according to claim 5, characterized in that: The second heat dissipation assembly further includes a second fan, and a second air inlet is provided on the upper portion of the second housing; The top surface of the second shell protrudes from the top surface of the first shell, and a step portion is formed at the junction of the top surface of the second shell and the top surface of the first shell; An air guide port is provided on the step portion, and the air guide port is used to guide the wind blown out from the second fan to the wireless charging position.

8. The wireless charging device according to claim 7, characterized in that: The wall surface used to form the air guide port is an inclined surface; There are multiple air guide ports, and the wall surfaces corresponding to the multiple air guide ports have different inclinations; or The wall surface corresponding to the air guide port is divided into multiple sections, and the inclinations of the multiple sections of the wall surface are different.

9. The wireless charging device according to claim 7, characterized in that: A partition extending in the horizontal direction is provided in the second shell to separate the cavity in the second shell into two sub-cavities in the vertical direction; The second fan is arranged in the sub-cavity located at the top, and the wireless charging device has a main board, and the main board is arranged in the sub-cavity located at the bottom.

10. A control method for a wireless charging device, characterized in that: The wireless charging device is a wireless charging device according to any one of claims 4 to 9, and the control method comprises: Obtain the temperature of the wireless charging coil or the device to be charged; When the obtained temperature is greater than or equal to the first preset temperature, starting the semiconductor refrigeration module; When the obtained temperature is less than or equal to a second preset temperature, shutting down the semiconductor refrigeration module, wherein the second preset temperature is less than the first preset temperature; Wherein, obtaining the temperature of the wireless charging coil or the device to be charged includes: Acquiring the internal temperature or battery temperature of the device to be charged; wherein, when the temperature sensor of the device to be charged detects that the internal temperature or the battery temperature of the device to be charged reaches a second temperature, the internal temperature or the battery temperature is transmitted to the control circuit of the wireless charging device through the communication circuit of the device to be charged and the communication circuit of the wireless charging device, and the control circuit is electrically connected to the communication circuit; Wherein, starting the semiconductor refrigeration module comprises: Controlling the operation of the semiconductor refrigeration module according to the temperature received by the communication circuit of the wireless charging device, so that the semiconductor refrigeration module continuously outputs refrigeration at a constant power until the temperature of the device to be charged drops to a first temperature; Wherein, closing the semiconductor refrigeration module comprises: Controlling the operation of the semiconductor refrigeration module according to the temperature detected by the temperature sensor of the wireless charging device, so that when the temperature sensor of the wireless charging device senses that the temperature of the device to be charged drops to the first temperature, the temperature sensor of the wireless charging device provides feedback to the control circuit of the wireless charging device, so that the control circuit controls the semiconductor refrigeration module to stop working; It also includes: when the temperature sensor of the wireless charging device detects that the temperature of the wireless charging coil is greater than or equal to a first preset temperature, starting the semiconductor refrigeration module and monitoring the startup time of the semiconductor refrigeration module; when the startup time of the semiconductor refrigeration module is greater than or equal to the first preset time, and the obtained temperature is still greater than or equal to the first preset temperature, increasing the working current of the semiconductor refrigeration module.

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