Wireless charging device

Abstract

The utility model relates to a wireless charging device. The wireless charging device comprises a wireless charging operation face, the wireless charging operation face comprises a first side and a second side which are arranged oppositely, and the first side is the side facing charging equipment in the charging operation process; the wireless charging coil is arranged on one side, far away from the charging equipment, of the wireless charging working surface; the temperature detection circuit comprises a temperature detection element, and the temperature detection element is arranged on the wireless charging working face; the control circuit is arranged on the second side of the wireless charging working face, the control circuit is connected with the temperature detection circuit, and the control circuit receives a temperature signal of the temperature detection element and controls the working state of the wireless charging circuit according to the temperature signal. According to the invention, the temperature detection element is arranged to detect the temperature of the charging working surface, and foreign matter detection is carried out on the wireless charging area.

Description

Technical Field

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

[0002] Magnetic induction coupling and magnetic coupling resonance are two widely used solutions in the field of wireless charging technology. Both wireless charging solutions use the principle of electromagnetic induction to couple energy through the high-frequency magnetic field between the transmitting coil and the receiving coil, so as to transfer energy from the power supply device to the power receiving device. There is an air gap between the transmitting coil and the receiving coil of the wireless charging device, and various foreign objects may enter the air gap. If there is a small metal foreign object between the power supply device and the power receiving device, the eddy current effect of the metal in the changing magnetic field will cause the metal to heat up, and then spontaneously combust or burn the related parts of the wireless charging device.

[0003] However, the relevant technology has poor detection accuracy for tiny foreign objects with low power consumption and severe heat generation. When small metal foreign objects are present, it is difficult to detect them in time, resulting in safety hazards and reducing the energy transmission efficiency of the wireless charging system. Utility Model Content

[0004] In order to overcome the above technical problems existing in the related art, the present disclosure provides a wireless charging device.

[0005] According to one aspect of an embodiment of the present disclosure, there is provided a wireless charging device, comprising a wireless charging operating surface, the wireless charging operating surface comprising a first side and a second side arranged opposite to each other, the first side being a side facing a charging device during a charging operation; a wireless charging coil, arranged on the second side of the wireless charging operating surface; a temperature detection circuit, the temperature detection circuit comprising a temperature detection element, the temperature detection element being arranged on the wireless charging operating surface; and a control circuit, arranged on the second side of the wireless charging operating surface, the control circuit being connected to the temperature detection circuit, the control circuit receiving a temperature signal of the temperature detection element, and controlling a working state of the wireless charging coil according to the temperature signal.

[0006] In some embodiments, the wireless charging device includes a first execution circuit, which is arranged on the second side of the wireless charging working surface. The execution circuit includes an execution element. The first execution circuit is connected to the control circuit. When the temperature signal received by the control circuit exceeds a threshold range, the control circuit controls the first execution circuit to be turned on.

[0007] In some embodiments, the first execution circuit includes a switch element, which is connected to the execution element, wherein when the temperature signal received by the control circuit exceeds a threshold range, the control circuit controls the switch element to turn on to turn on the first execution circuit.

[0008] In some embodiments, the actuator includes one or more of a resistor, a light emitting element, and a sound emitting element.

[0009] In some embodiments, the wireless charging coil provides power to the first execution circuit.

[0010] In some embodiments, the wireless charging device includes a power supply module, which is disposed on the second side of the wireless charging operation surface, and the power supply module supplies power to the detection circuit.

[0011] In some embodiments, the temperature detection element is located within the orthographic projection range of the wireless charging coil on the wireless charging operation surface.

[0012] In some embodiments, the temperature detection element is disposed on the first side of the wireless charging operation surface; and / or the temperature detection element is disposed on the second side of the wireless charging operation surface.

[0013] In some embodiments, the temperature detection element is embedded in the wireless charging working surface.

[0014] In some embodiments, the temperature detection element is provided in plurality, and the plurality of temperature detection elements are arranged at equal intervals.

[0015] In some embodiments, the temperature detection element includes one or more of a thermistor, a thermocouple, a thermistor, and a thermal resistor.

[0016] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0017] By setting a temperature sensor to increase the temperature feedback of the charging operation surface, the foreign object detection capability in the wireless charging area is improved, which is more conducive to the detection of small metal foreign objects; avoid the use of expensive components such as infrared sensors, and reduce the overall cost of the charging system; the calculation process is simple, and foreign object judgment is performed through temperature feedback, avoiding complex processing processes such as processing two-dimensional images; strong compatibility, does not change the existing wireless charging foreign object detection module.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] Figure 1 The figure is a block diagram of a detection circuit of a wireless charging device according to an exemplary embodiment.

[0021] Figure 2 is a three-dimensional schematic diagram of a temperature detection circuit according to an exemplary embodiment.

[0022] Figure 3 The figure is a schematic diagram showing electrical connection between a control circuit and a temperature detection circuit according to an exemplary embodiment.

[0023] Figure 4 is a schematic diagram showing electrical connections of a temperature detection element according to an exemplary embodiment.

[0024] Figure 5 is a schematic diagram showing electrical connections of another temperature detection element according to an exemplary embodiment.

[0025] Figure 6 is an electrical diagram of a first execution circuit according to an exemplary embodiment.

[0026] Figure 7 is a schematic diagram showing electrical access to a first execution circuit according to an exemplary embodiment.

[0027] Figure 8 It is a three-dimensional exploded diagram showing a working state of a detection device according to an exemplary embodiment.

[0028] Fig. 9 is a schematic cross-sectional view of a detection device according to an exemplary embodiment.

[0029] Reference numerals:

[0030] Temperature detection circuit 10, charging operation surface 11, temperature detection element 12;

[0031] Control circuit 20, microcontroller 21, reference power supply 22, reference resistor 23;

[0032] A first execution circuit 30, an execution element 31, a switch element 32, a power supply coil 33, a rectifier 34, and a drive element 35;

[0033] Detection circuit 100, transmitting end 300, transmitting coil 310, receiving end 400, receiving coil 410;

[0034] Detection device 200 , housing 201 , battery compartment 202 , first charging operation surface 210 , first temperature detection element 211 , second charging operation surface 220 , second temperature detection element 221 . DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the claims.

[0036] In the current field of wireless charging technology, magnetic induction coupling and magnetic coupling resonance are two widely used solutions. Both wireless charging solutions are based on the principle of electromagnetic induction. They couple energy through the high-frequency magnetic field between the transmitting coil and the receiving coil, thereby transferring energy from the power supply device to the power receiving device. There is an air gap between the transmitting coil and the receiving coil of the wireless charging device, and various foreign objects may enter the air gap. If there are small metal foreign objects between the power supply device and the power receiving device, the eddy current effect of the metal in the changing magnetic field will cause the metal to heat up, and then spontaneously combust or burn related parts of the wireless charging device.

[0037] At present, foreign body detection is mainly carried out through the power loss of the charging operation surface. However, the relevant technology has poor detection accuracy for small foreign bodies with low power consumption and severe heat generation. When small metal foreign bodies are present, it is difficult to detect them in time, resulting in safety hazards and reducing the energy transmission efficiency of the wireless charging system. At the same time, the use of infrared imaging for detection will use high-cost components such as infrared sensors, and the generated two-dimensional infrared images need to be processed in real time. The calculation process is complex and has high requirements for the processor.

[0038] In order to solve the above technical problems, a wireless charging device is provided according to an embodiment of the present disclosure.

[0039] Figure 1 is a block diagram of a detection circuit 100 of a wireless charging device according to an exemplary embodiment. Figure 2 is a three-dimensional schematic diagram of a temperature detection circuit 10 according to an exemplary embodiment.

[0040] In the present disclosure, the wireless charging device may include a wireless charging operating surface 11, a wireless charging coil, a temperature detection circuit, and a control circuit. The wireless charging operating surface may include a first side and a second side that are arranged opposite to each other. The first side may refer to a side where wireless charging electromagnetic induction is performed, which is usually the side opposite to the charging device, for example, it may be the side facing the charging device during the charging operation. The wireless charging coil is arranged on the second side of the wireless charging operating surface, and the second side may be the inner side of the wireless charging device. Generally speaking, the inner side here refers to the side that the user cannot directly see when using the wireless charging device. That is, the wireless charging coil can be arranged on the side of the wireless charging operating surface away from the charging device.

[0041] In the present disclosure, the wireless charging device may be a wireless power supply device. In such an embodiment, the wireless charging coil may be a power supply coil 33, and the charging device may be a device to be charged. In some embodiments, the wireless charging device may also be a device to be charged, a device to be charged, such as an electronic device.

[0042] In some embodiments, reference Figure 1 to Figure 2 As shown, the temperature detection circuit 10 and the control circuit 20 can together form a detection circuit 100. The temperature detection circuit 10 can include a temperature detection element 12, which is disposed on the wireless charging operation surface 11; the control circuit 20 is connected to the temperature detection circuit 10, and the control circuit 20 can receive a temperature signal from the temperature detection element 12, and control the working state of the wireless charging circuit according to the temperature signal.

[0043] In some embodiments, reference Figure 2 As shown, the temperature detection elements 12 can be evenly distributed on the wireless charging operation surface 11. The temperature detection elements 12 are evenly distributed on the wireless charging operation surface 11 as much as possible, which ensures the accuracy of the data collected by the temperature detection elements 12, thereby improving the detection capability of the temperature detection circuit 10, reducing the limitations of the detection circuit 100, and being more conducive to the detection of small metal foreign bodies.

[0044] In the present disclosure, the temperature detection element 12 may be located within the orthographic projection range of the wireless charging coil on the wireless charging operation surface 11. For example, the wireless charging coil may be located on the second side of the wireless charging operation surface 11, and the wireless charging coil may be arranged opposite to the wireless charging operation surface 11, while the temperature detection element 12 is located on the wireless charging operation surface 11 and is also arranged opposite to the wireless charging coil.

[0045] When the wireless charging device is in operation, the wireless charging operation surface 11 will generate heat, especially the portion opposite to the wireless charging coil, where the heat generation is more obvious. The temperature detection element 12 is arranged at the position opposite to the wireless charging coil, i.e., the position where the heat generation is most obvious, so as to improve the detection sensitivity of the entire detection circuit to temperature.

[0046] In some embodiments, the temperature detection element 12 can be set on the second side of the wireless charging working surface, such as the inner surface of the wireless charging working surface 11. In such an embodiment, the electrical connection relationship between the temperature detection element 12 and components such as the control circuit is set inside the wireless charging device, which makes the setting method simpler and the electrical connection relationship safer.

[0047] However, the present disclosure is not limited thereto, in some embodiments, the temperature detection element 12 may be disposed on the second side of the wireless charging operation surface 11, for example, on the outer surface of the wireless charging operation surface 11. The overall design of the wireless charging device may be adjusted adaptively.

[0048] In some embodiments, the temperature detection element 12 can be set on the first side (e.g., the outer surface) of the wireless charging working surface 11 and also on the second side (e.g., the inner surface) of the wireless charging working surface 11, so that the temperature changes can be sensed more comprehensively.

[0049] In some embodiments, the temperature detection element 12 can be embedded in the wireless charging working surface 11. For example, the wireless charging working surface can be provided with a receiving groove, and the temperature detection element 12 can be arranged in the receiving groove, so as to avoid increasing the thickness of the wireless charging device, which is conducive to the lightness and thinness of the time-limited wireless charging device. In some embodiments, the temperature detection element 12 may include one or more of a thermistor, a thermocouple, a thermistor capacitor, and a thermal resistor. In the present disclosure, the temperature detection element 12 included in the temperature detection circuit 10 refers to a sensor that can sense temperature and convert it into a usable output signal, such as a thermistor, a thermocouple, a thermistor capacitor, a thermal resistor, etc. The present disclosure does not specifically limit the type and quantity of the temperature detection element 12. In the following embodiments, unless otherwise specified, the type of the temperature detection element 12 is described by taking a thermistor and the quantity is described by taking multiple as an example.

[0050] In the present disclosure, multiple temperature detection elements 12 may be arranged at equal intervals or evenly distributed, and such an arrangement may more comprehensively sense temperature changes.

[0051] In some embodiments, the control circuit 20 may include a microcontroller 21 (MCU), which may receive, identify and process a temperature signal from the temperature detection element 12. However, the present disclosure does not specifically limit the specific circuit connection relationship within the control circuit 20 and the types and quantities of components used.

[0052] Figure 3 is a schematic diagram showing electrical connections between a control circuit 20 and a temperature detection circuit 10 according to an exemplary embodiment.

[0053] In a specific embodiment, referring to Figure 3 As shown, the microcontroller 21 may include a reference power supply 22 and a reference resistor 23. The voltage of the reference power supply 22 is V 参考 , the resistance value of the reference resistor 23 is R 参考 , the reference resistor 23 and the temperature detection element 12 are connected in series, and the microcontroller 21 can detect the voltage V across the temperature detection element 12 检测 When the temperature measured by the temperature detection element 12 changes, the resistance value of the temperature detection element 12 also changes, causing V 检测 The voltage changes as shown below.

[0054]

[0055] That is, temperature and V 检测 The voltage has a one-to-one correspondence, and the microcontroller 21 chip can 检测 The temperature change of the charging operation surface 11 can be obtained by the size. According to the temperature change information of the charging operation surface 11, the microcontroller 21 chip can determine whether there is foreign matter information according to the preset foreign matter detection algorithm. The basic principle of the foreign matter detection algorithm: the temperature detected by the temperature detection element 12 in the area where the metal foreign matter is heating up on the charging operation surface 11 is higher and rises faster, and the temperature detected by the temperature detection element 12 far away from the foreign matter metal heating source is low and rises slowly.

[0056] Figure 4 is a schematic diagram showing electrical connections of a temperature detection element 12 according to an exemplary embodiment.

[0057] In some embodiments, reference Figure 4 As shown, the temperature detection elements 12 can be connected in series. The series connection can simplify the temperature detection circuit 10 and reduce the wiring of the temperature detection circuit 10 while ensuring the normal function of the temperature detection circuit 10.

[0058] Figure 5 is a schematic diagram showing electrical connections of another temperature detection element 12 according to an exemplary embodiment.

[0059] However, the present disclosure is not limited thereto. In other embodiments, Figure 5 As shown, the temperature detection elements 12 can be connected in parallel. The parallel connection can prevent the temperature detection circuit 10 from being unable to work normally when one or several temperature detection elements 12 in the temperature detection circuit 10 are damaged, thereby causing the detection circuit 100 to malfunction.

[0060] In some other embodiments, the temperature detection elements 12 may be connected in a mixed serial-parallel manner. The mixed serial-parallel connection manner can take into account both simplicity and fault tolerance, and obtain a more precise temperature distribution of the charging working surface 11.

[0061] In the present disclosure, the connection relationship of the temperature detection element 12 in the temperature detection circuit 10 is not specifically limited and can be matched and set according to factors such as the area of ​​the charging working surface 11, the number of temperature detection elements 12, and the performance requirements of the temperature detection circuit 10.

[0062] Figure 6 is an electrical diagram of a first execution circuit 30 according to an exemplary embodiment.

[0063] In some embodiments, reference Figure 6 As shown, the wireless charging device may include a first execution circuit 30. For example, the detection circuit 100 may include the first execution circuit 30. The first execution circuit 30 may include an execution element 31. The first execution circuit 30 is connected to the control circuit 20. When the temperature signal of the temperature detection point received by the control circuit 20 exceeds a preset threshold range, the control circuit 20 controls the first execution circuit 30 to turn on.

[0064] In the present disclosure, the first execution circuit 30 may be disposed on the second side of the wireless charging operation surface 11 , for example, may be the inner side of the wireless charging operation surface 11 .

[0065] In some embodiments, the first execution circuit 30 may include a switching element 32, and the switching element 32 is connected to the execution element 31, wherein when the temperature signal received by the control circuit 20 exceeds the threshold range, the control circuit 20 controls the switching element 32 to turn on the first execution circuit 30, and the execution element 31 operates normally.

[0066] Specifically, the switch element 32 may be one or more of a relay, an electromagnetic contactor, a diode, a semiconductor field effect transistor, a digital switch, and a logic gate. The present disclosure does not specifically limit the type and quantity of the switch element 32.

[0067] In some embodiments, the actuator 31 may include one or more of a resistor, a light-emitting element, and a sound-emitting element. When the actuator 31 is a resistor, a large amount of energy may be consumed; when the actuator 31 is a light-emitting element, a visual warning signal may be sent to the outside; when the actuator 31 is a sound-emitting element, an auditory warning signal may be sent to the outside. The present disclosure does not specifically limit the type and quantity of the actuator 31, and the actuator 31 may be matched and set according to factors such as the use scenario, applicable population, and power requirements of the detection circuit 100.

[0068] Figure 7 is a schematic diagram showing an electrical connection of a first execution circuit 30 according to an exemplary embodiment.

[0069] In some embodiments, the first execution circuit 30 may be connected to the wireless charging coil. In such an embodiment, the wireless charging coil may supply power to the first execution circuit 30. For example, in some embodiments, according to the specific function of the wireless charging device, the wireless charging coil may include a power supply coil 33, and the power supply coil may be a coil at the receiving end or a coil at the transmitting end, which is not specifically limited in the present disclosure.

[0070] Reference Figure 6 to Figure 7 As shown, taking the power supply coil as the coil of the receiving end as an example, the power supply coil 33 is used for induction with the transmitting coil 310 of the transmitting end 300 , and receives energy from the charging working surface 11 to power the first execution circuit 30 .

[0071] In some embodiments, the wireless charging device may include a foreign object detection module, which detects the energy loss P between the charging operation surface 11. 损耗 And do the work.

[0072] Specifically, the working principle of the foreign object detection module is: by comparing and calculating the input power of the transmitting end 300 and the output power of the receiving end 400, the transmission loss power P is determined. 损耗 Whether it is within the set reasonable range. However, the present disclosure does not specifically limit the specific circuit design and components of the foreign body detection module.

[0073] like Figure 7 As shown, the left side is the transmitter 300 and the right side is the receiver 400. In the normal wireless charging process, there will be a certain loss of energy during the transmission process, which is recorded as P 损耗 When a metallic foreign body is present, part of the energy is absorbed by the foreign body, resulting in P 损耗 Increase, when P 损耗 When the preset threshold is exceeded, it can be considered that metal foreign matter exists. However, for small metal foreign matter, the P 损耗 The increase is limited and cannot be identified, but the heating risk caused by small metal foreign objects cannot be ignored (about 100℃ / min).

[0074] In the present disclosure, the detection circuit 100 detects the presence of metal foreign matter and turns on the first execution circuit 30 through the control circuit 20. The first execution circuit 30 obtains energy from the transmitting coil 310 of the transmitting end 300 through the power supply coil 33, so that the electric energy is P during the transmission process. 损耗 Therefore, the foreign body detection module can identify the small metal foreign bodies that were not previously identified, and then the foreign body detection module executes subsequent commands based on the detection results, for example, issuing a stop work instruction to the charging operation surface 11 and communicating with the wireless terminal. It should be noted that the present disclosure does not specifically limit this subsequent command.

[0075] In some embodiments, the first execution circuit 30 may further include: a rectifier 34 and a driving element 35. Specifically, the rectifier 34 converts the AC signal obtained by the power supply coil 33 into a DC signal, and the driving element 35 may be arranged between the control circuit 20 and the switch element 32. The control circuit 20 controls the conduction state of the switch element 32 by controlling the driving element 35.

[0076] In the present disclosure, there is no specific limitation on the model and component selection of the rectifier 34, and there is no specific limitation on the type and quantity of the driving element 35. The settings can be matched according to factors such as the type of the switching element 32 and the access point of the control circuit 20.

[0077] In some embodiments, the detection circuit 100 includes a power supply module, which supplies power to the detection circuit 100. In the present disclosure, the power supply module may be disposed on the second side of the wireless charging operation surface 11, for example, may be the inner side of the wireless charging operation surface 11.

[0078] Specifically, the power supply module may supply power to one or more circuits in the temperature detection circuit 10 and the control circuit 20 . For example, the power supply module may include a reference power supply 22 in the control circuit 20 .

[0079] In some embodiments, the power supply module includes a wireless charging module. The wireless charging module can obtain energy from the transmitting coil 310 of the transmitting end 300, thereby reducing the overall wiring of the power supply module.

[0080] However, the present disclosure is not limited thereto, and the power supply module may also include a wired power supply module, and the wired power supply module may obtain energy by connecting to an external 220V household power supply, etc. In some embodiments, the power supply module may also include a battery.

[0081] Based on the same concept, the present disclosure further provides a detection device 200 , which may include the detection circuit 100 and a communication module described in any one of the above embodiments.

[0082] The communication module can transmit the information of the detection circuit 100 to the transmitting end 300 or the receiving end 400, and the transmitting end 300 or the receiving end 400 actively stops charging or gives a warning. The present disclosure does not specifically limit the implementation principle (such as Bluetooth, wireless charging signal, etc.) and specific circuit design of the communication module.

[0083] Figure 8 It is a three-dimensional exploded diagram showing a working state of a detection device 200 according to an exemplary embodiment.

[0084] In some embodiments, reference Figure 8 As shown, the detection device 200 includes a housing 201, and the detection circuit 100 can be placed inside the housing 201. The present disclosure does not specifically limit the thickness and shape of the housing 201, and can be matched and set according to the vertical degree of freedom, horizontal degree of freedom and other performances of the transmitting end 300 and the receiving end 400 involved in the use scenario of the detection device 200.

[0085] In some embodiments, the housing 201 is recessed inward to form a battery compartment 202 , and the battery compartment 202 is used to place batteries.

[0086] It should be noted that the present disclosure does not specifically limit the shape, quantity, and geometric position of the battery compartment 202 , and can be matched and set according to the type, shape, and quantity of batteries required by the detection device 200 .

[0087] Fig. 9 is a schematic cross-sectional view of a detection device 200 according to an exemplary embodiment.

[0088] In some embodiments, reference Figures 8 to 9 As shown, the detection device 200 includes a first charging working surface 210 and a second charging working surface 220 that are arranged opposite to each other, and the temperature detection element 12 includes a first temperature detection element 211 and a second temperature detection element 221 .

[0089] Specifically, the first temperature detection element 211 is disposed on the first charging working surface 210, and the second temperature detection element 221 is disposed on the second charging working surface 220. The first temperature detection element 211 on the first charging working surface 210 can detect the temperature of the working surface of the transmitting end 300, and the second temperature detection element 221 on the second charging working surface 220 can detect the temperature of the working surface of the receiving end 400; or, the first temperature detection element 211 on the first charging working surface 210 can detect the temperature of the working surface of the receiving end 400, and the second temperature detection element 221 on the second charging working surface 220 can detect the temperature of the working surface of the transmitting end 300.

[0090] The present disclosure does not impose any specific restrictions on the type and quantity of the first temperature detection element 211, and can be matched and set according to factors such as the size and shape of the first charging working surface 210. The present disclosure does not impose any specific restrictions on the first charging working surface 210, and can be one side of the outer surface of the shell 201 or one side of the inner surface of the shell 201.

[0091] The present disclosure does not impose any specific restrictions on the type and quantity of the second temperature detection element 221, and can be matched and set according to factors such as the size and shape of the second charging working surface 220. The present disclosure does not impose any specific restrictions on the second charging working surface 220, and can be one side of the outer surface of the shell 201 or one side of the inner surface of the shell 201.

[0092] Based on the same concept, the present disclosure further provides a wireless charging device, which may include the detection circuit 100 described in any one of the above embodiments.

[0093] In the present disclosure, a wireless charging device can be an end that outputs energy, including but not limited to wireless charging bases for various mobile terminals, wireless charging base stations for cars, and wireless charging platforms for large machinery; a wireless charging device can also be an end that receives energy, including but not limited to mobile phones, mobile computers, tablet computers, pocket personal computers (Pocket Personal Computer, PPC), personal digital assistants (Personal Digital Assistant, PDA), wearable devices or vehicle-mounted devices and other various wirelessly chargeable devices.

[0094] It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form used by the wireless charging device. The present disclosure uses a mobile phone as an example for explanation, but the present disclosure is not limited to this.

[0095] In some embodiments, the wireless charging device may include a control module, and the control circuit 20 is disposed in the control module. When the wireless charging device is a mobile phone as an example, the mobile phone control chip may be a processor of the control circuit 20, and the mobile phone control chip may first send a stop command to the receiving end 400, and the receiving end 400 then sends a stop command to the transmitting end 300. When the wireless charging device is a charging base as an example, the base chip may be a processor of the control circuit 20, and the base chip may directly send a signal to the transmitting end 300 to stop it from working.

[0096] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0097] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0098] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0099] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0100] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0101] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the concepts disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following scope of rights.

[0102] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A wireless charging device, characterized in that: include: A wireless charging operation surface, the wireless charging operation surface comprising a first side and a second side disposed opposite to each other, the first side being a side facing the charging device during the charging operation; A wireless charging coil, disposed on the second side of the wireless charging operation surface; A temperature detection circuit, comprising a temperature detection element, wherein the temperature detection element is disposed on the wireless charging operation surface; as well as A control circuit is arranged on the second side of the wireless charging operation surface, the control circuit is connected to the temperature detection circuit, the control circuit receives the temperature signal of the temperature detection element, and controls the working state of the wireless charging coil according to the temperature signal.

2. The wireless charging device according to claim 1, characterized in that: The wireless charging device comprises: A first execution circuit is disposed on the second side of the wireless charging operation surface, the execution circuit includes an execution element, and the first execution circuit is connected to the control circuit. When the temperature signal received by the control circuit exceeds a threshold range, the control circuit controls the first execution circuit to be turned on.

3. The wireless charging device according to claim 2, characterized in that: The first execution circuit includes a switch element, and the switch element is connected to the execution element. When the temperature signal received by the control circuit exceeds a threshold range, the control circuit controls the switch element to be turned on to turn on the first execution circuit.

4. The wireless charging device according to claim 2, characterized in that: The actuator includes one or more of a resistor, a light emitting element, and a sound generating element.

5. The wireless charging device according to claim 2, characterized in that: The wireless charging coil supplies power to the first execution circuit.

6. The wireless charging device according to claim 1, characterized in that: The wireless charging device includes a power supply module, which is disposed on the second side of the wireless charging operation surface, and supplies power to the detection circuit.

7. The wireless charging device according to claim 6, characterized in that: The temperature detection element is located within the orthographic projection range of the wireless charging coil on the wireless charging operation surface.

8. The wireless charging device according to claim 1, characterized in that: The temperature detection element is disposed on the first side of the wireless charging operation surface; and / or The temperature detection element is disposed on the second side of the wireless charging operation surface.

9. The wireless charging device according to claim 1, characterized in that: The temperature detection element is embedded in the wireless charging operation surface.

10. The wireless charging device according to claim 1, characterized in that: The temperature detection elements are arranged in plurality, and the plurality of temperature detection elements are arranged at equal intervals.

11. The wireless charging device according to claim 1, characterized in that: The temperature detection element includes one or more of a thermistor, a thermocouple, a thermistor capacitor, and a thermal resistor.

Images