Wireless charging device

Abstract

The invention relates to a wireless charging device which comprises a short-distance wireless communication chip, a plurality of charging modules, a plurality of infrared sensors, a switch assembly and a control module, and each charging module comprises a short-distance wireless communication antenna. The infrared sensors are arranged on the charging modules in a one-to-one correspondence mode. The switch assembly is connected with the proximity wireless communication chip and the plurality of charging modules. The control module is connected to the near field communication chip, the plurality of charging modules, the plurality of infrared sensors and the switch assembly. The control module is used for controlling the switch assembly to conduct the short-distance wireless communication chip and the short-distance wireless communication antenna of the target module in the plurality of charging modules according to the sensing signals of the plurality of infrared sensors. According to the wireless charging device, under the condition that the function is not changed, one short-distance wireless communication chip is used for conducting the short-distance wireless communication antennas included in the multiple charging modules respectively, and the purpose of reducing the use cost of the short-distance wireless communication chip is achieved.

Description

Technical Field

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

[0002] The applications of Near Field Communication (NFC) in wireless charging mainly include NFC wireless charger location tracking, NFC wireless charger automatic switch, NFC wireless charging multi-purpose function, NFC wireless charger safety control and NFC wireless charger interactive function. In the application of near field wireless communication, antennas are usually used as components for sending and receiving wireless signals. The configuration of antennas needs to consider the corresponding coil position and layout, as well as the communication performance and signal strength of the antenna. Therefore, most existing practices configure a group of antennas and their corresponding coils for a near field wireless communication chip.

[0003] A wireless charging device usually requires a short-range wireless communication antenna and its corresponding coil, that is, a short-range wireless communication chip needs to be equipped with a set of antennas and corresponding coils. Therefore, in order to realize wireless charging of multiple devices at the same time, this approach requires multiple wireless charging modules including antennas, each of which is equipped with multiple short-range wireless communication chips. This may increase the cost of implementation and may also take up more space on the printed circuit board. Summary of the invention

[0004] Based on this, it is necessary to provide a wireless charging device that can reduce costs in order to solve the above problems.

[0005] A wireless charging device includes a short-range wireless communication chip, a plurality of charging modules, a plurality of infrared sensors, a switch component and a control module. The plurality of charging modules each include a short-range wireless communication antenna. The infrared sensors are arranged in the charging modules one by one. The switch component connects the short-range wireless communication chip and the plurality of charging modules. The control module is connected to the short-range wireless communication chip, the plurality of charging modules, the plurality of infrared sensors and the switch component, and the control module is used to control the switch component to conduct the short-range wireless communication chip and the short-range wireless communication antenna of a target module among the plurality of charging modules according to the sensing signals of the plurality of infrared sensors.

[0006] The technical solution is further described below:

[0007] In one embodiment, the control module is used to use one of the plurality of charging modules corresponding to the sensing signal having a preset potential as the target module.

[0008] In one embodiment, the control module is used to control the switch component to connect at least two charging modules among the multiple charging modules, each of which is provided with the at least two infrared sensors, to the short-range wireless communication chip in sequence in a preset order when the sensing signal of each of at least two infrared sensors among the multiple infrared sensors has a preset potential, and the at least two charging modules include the target module.

[0009] In one embodiment, the control module is also used to obtain a piece of data to be identified from the turned-on short-range wireless communication antenna through the short-range wireless communication chip, determine whether it meets a preset charging standard based on the data to be identified, and when it is determined that the data to be identified meets the preset charging standard, control the target module to output power.

[0010] In one embodiment, the wireless charging device further includes:

[0011] an output component, the output component is connected to the control module,

[0012] Wherein, the control module is further used to send a notification message through the output component when it is determined that the data to be identified does not meet the preset charging standard.

[0013] In one embodiment, the control module is further configured to control the target module to stop outputting power when the sensing signal corresponding to the target module changes from having the preset potential to not having the preset potential.

[0014] In one embodiment, the plurality of charging modules further include:

[0015] a substrate; and

[0016] a charging coil, wherein the charging coil is disposed on the substrate along a setting direction, and a distance exists between a projection of the charging coil in the setting direction and projections of the plurality of infrared sensors in the setting direction,

[0017] Wherein, the short-range wireless communication antenna is arranged on the substrate.

[0018] In one embodiment, the plurality of charging modules further include:

[0019] a substrate; and

[0020] a charging coil, the charging coil being disposed on the substrate,

[0021] The short-range wireless communication antenna is disposed on the substrate along a setting direction, and a distance exists between a projection of the short-range wireless communication antenna in the setting direction and projections of the plurality of infrared sensors in the setting direction.

[0022] In one embodiment, each of the infrared sensors is a reflective photointerrupter, and each of the infrared sensors includes a variable resistor.

[0023] In one embodiment, the switch component is a radio frequency switch component.

[0024] In the above wireless charging device, the wireless charging device can use multiple infrared sensors arranged in multiple charging modules to determine whether there is an object placed in the charging module, and use the switch component to connect the short-range wireless communication chip and the short-range wireless communication antenna of the charging module where the object is placed. Therefore, compared with the wireless charging device that uses multiple short-range wireless communication chips to connect the short-range wireless communication antennas included in multiple charging modules, the wireless charging device of the present application can use one short-range wireless communication chip to connect the short-range wireless communication antennas included in multiple charging modules without changing the function, thereby reducing the use cost of the short-range wireless communication chip, optimizing the circuit and increasing the accuracy of short-range wireless communication judgment.

[0025] The above description of the contents of the present application and the following description of the implementation methods are used to demonstrate and explain the spirit and principle of the present application, and to provide a further explanation of the scope of the patent application of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0029] Figure 1 FIG. 1 is a schematic structural diagram of a wireless charging device according to an embodiment of the present application.

[0030] Figure 2FIG. 1 is a schematic diagram of the arrangement relationship between a charging module and an infrared sensor of a wireless charging device according to an embodiment of the present application.

[0031] Figure 3 This is a control flow chart of a switch component of a wireless charging device according to an embodiment of the present application.

[0032] Figure 4 This is a control flow chart of a charging module of a wireless charging device according to an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 1: wireless charging device; 11: short-range wireless communication chip; 12, 12_1, 12_2: charging module; 13, 13_1, 13_2: infrared sensor; 14: switch component; 15: control module; 151: microcontroller; 152: wireless charging controller; 121, 121_1, 121_2: short-range wireless communication antenna; 122: substrate; 123: charging coil; x, y, z: directions; S11, S12, S13, S14, S15, S16, S17, S18, S19, S20: steps. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if the terms "first" and "second" appear, these terms are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0040] Please refer to Figure 1 , Figure 1 FIG. 1 is a schematic diagram of the structure of a wireless charging device 1 according to an embodiment of the present application. Figure 1As shown, the wireless charging device 1 includes a short-range wireless communication chip 11, a charging module 12_1 and a charging module 12_2, an infrared sensor 13_1 and an infrared sensor 13_2, a switch component 14 and a control module 15. The charging module 12_1 includes a short-range wireless communication antenna 121_1, and the charging module 12_2 includes a short-range wireless communication antenna 121_2. The switch component 14 is connected to the short-range wireless communication chip 11 and the charging modules 12_1 and 12_2. The control module 15 is connected to the short-range wireless communication chip 11, the charging modules 12_1 and 12_2, the infrared sensor 13_1 and the infrared sensor 13_2 and the switch component 14. Further, the control module 15 may include a microcontroller 151 and a wireless charging controller 152. The microcontroller 151 can be connected to the short-range wireless communication chip 11 , the infrared sensor 13_1 and the infrared sensor 13_2 , the switch component 14 and the wireless charging controller 152 , and the wireless charging controller 152 can be connected to the charging module 12_1 and the charging module 12_2 .

[0041] The short-range wireless communication chip 11 is used to process signals based on short-range wireless communication technology. The charging module 12_1 and the charging module 12_2 can both place objects to be charged to provide wireless charging and wireless communication functions for the objects to be charged. The short-range wireless communication chip 11 can receive and send signals based on short-range wireless communication technology through the short-range wireless communication antenna 121_1 in the charging module 12_1 or the short-range wireless communication antenna 121_2 in the charging module 12_2 by switching the switch component 14.

[0042] The infrared sensor 13_1 and the infrared sensor 13_2 are respectively disposed in the charging module 12_1 and the charging module 12_2, and are used for sensing to generate a signal indicating whether an object is placed in the charging module 12_1 and the charging module 12_2. Specifically, the infrared sensor 13_1 and the infrared sensor 13_2 can both be reflective photointerrupters, and the infrared sensor 13_1 and the infrared sensor 13_2 both include an infrared light emitting diode, a photosensitive transistor, and two resistors. When an object is placed in the charging module 12_1, the infrared sensor 13_1 can generate a sensing signal with a preset potential; when an object is placed in the charging module 12_2, the infrared sensor 13_2 can generate a sensing signal with a preset potential. In other words, the preset potential indicates that an object is placed in the charging module 12_1 or the charging module 12_2. The value of the preset potential can be set according to the material and structure of the charging module 12_1 and the charging module 12_2 and the material of the object to be charged, and the present invention is not limited thereto. Furthermore, at least one of the two resistors in the infrared sensor 13_1 and the infrared sensor 13_2 can be a variable resistor. The resistance value of the variable resistor can be adjusted according to the material of the object to be charged. Therefore, the wireless charging device 1 can be applicable to objects to be charged of various materials.

[0043] The switch component 14 is used to switch between the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_1 in the charging module 12_1 or between the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_2 in the charging module 12_2. For example, the switch component 14 can be a radio frequency switch component to provide a high-speed switching function.

[0044] The control module 15 is used to control the switch component 14 to conduct the signal transmission path between the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_1, or to conduct the signal transmission path between the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_2, or to conduct the above signal transmission paths in sequence according to a preset order according to the sensing signals of the infrared sensor 13_1 and the infrared sensor 13_2.

[0045] Specifically, when the infrared sensor 13_1 disposed in the charging module 12_1 has a sensing signal with a preset potential, the control module 15 can control the switch component 14 to conduct the short-distance wireless communication chip 11 and the short-distance wireless communication antenna 121_1 of the charging module 12_1; when the infrared sensor 13_2 disposed in the charging module 12_2 has a sensing signal with a preset potential, the control module 15 can control the switch component 14 to conduct the short-distance wireless communication chip 11 and the short-distance wireless communication antenna 121_2 of the charging module 12_2. In other words, the control module 15 can use the one of the charging module 12_1 and the charging module 12_2 corresponding to the sensing signal with the preset potential as the target module to be conducted. Furthermore, the control module 15 can obtain the signal received by the short-distance wireless communication antenna 121_1 or the short-distance wireless communication antenna 121_2 of the charging module 12_1 or the charging module 12_2 as the target module through the short-distance wireless communication chip 11, and then selectively control the charging module 12_1 or the charging module 12_2 to output power according to the signal. Furthermore, the control module 15 can confirm whether the received signal meets the preset charging standard, and when it is determined that the signal meets the preset charging standard, control the target module to output power.

[0046] In addition, when the sensing signals of the infrared sensor 13_1 and the infrared sensor 13_2 both have a preset potential, the control module 15 can control the switch component 14 to sequentially conduct multiple signal transmission paths in a preset order. Taking the preset order of charging module 12_1 first and then charging module 12_2 as an example, the control module 15 can control the switch component 14 to first conduct the charging module 12_1 provided with the infrared sensor 13_1 with the short-distance wireless communication chip 11 to obtain the signal received by the short-distance wireless communication antenna 121_1, and then switch to conduct the charging module 12_2 provided with the infrared sensor 13_2 to obtain the signal received by the short-distance wireless communication antenna 121_2, that is, the charging module 12_1 and the charging module 12_2 are both target modules to be conducted. Specifically, when the sensing signals of the infrared sensor 13_1 and the infrared sensor 13_2 both have a preset potential, it means that objects are placed on the charging modules 12_1 and 12_2 where the infrared sensors 13_1 and 13_2 are disposed, and the charging modules 12_1 and 12_2 are both target modules that can be controlled by the control module 15 to output power.

[0047] Please refer to Figure 1 and Figure 2 , Figure 2 Schematic diagram of the arrangement relationship between the charging module and the infrared sensor of the wireless charging device 1 in one embodiment of the present application. Figure 1The arrangement relationship between the charging module 12_1 and the infrared sensor 13_1 and the arrangement relationship between the charging module 12_2 and the infrared sensor 13_2 can be the same as Figure 2 The arrangement relationship between the charging module 12 and the infrared sensor 13 is shown.

[0048] like Figure 2 As shown, the charging module 12 may include a short-range wireless communication antenna 121, a substrate 122, and a charging coil 123, wherein the short-range wireless communication antenna 121 and the charging coil 123 are both disposed on the substrate 122, and in particular, the short-range wireless communication antenna 121 and the charging coil 123 may be disposed on opposite sides of the substrate 122, respectively. Specifically, the short-range wireless communication antenna 121 may be disposed on the substrate 122 along a setting direction z, and the projection of the short-range wireless communication antenna 121 in the setting direction z does not overlap with the projection of the infrared sensor 13 in the setting direction z, that is, there is a gap between the projection of the short-range wireless communication antenna 121 in the setting direction z and the projection of the infrared sensor 13 in the setting direction z. The charging coil 123 may be disposed on the substrate 122 along a setting direction z, and the projection of the charging coil 123 in the setting direction z does not overlap with the projection of the infrared sensor 13 in the setting direction z, that is, there is a gap between the projection of the charging coil 123 in the setting direction z and the projection of the infrared sensor 13 in the setting direction z. Thereby, the interference of the infrared sensor 13 to the short-range wireless communication antenna 121 and / or the charging coil 123 can be reduced. It should be noted that, Figure 2 It is merely illustrative that the short-range wireless communication antenna 121 includes two coils and the charging coil 123 includes three groups of coils, and is not intended to limit the present application.

[0049] Please refer to Figure 1 and Figure 3 ,in Figure 3 FIG. 1 is a control flow chart of the switch component 14 of the wireless charging device 1 in an embodiment of the present application. Figure 3As shown, the control process includes step S11: initialization; step S12: determine whether one of the multiple infrared sensors has a sensing signal with a preset potential; when the judgment result of step S12 is no, execute step S11 and the steps subsequent to step S11 again; when the judgment result of step S12 is yes, execute step S13: determine which of the multiple infrared sensors has a sensing signal with a preset potential; when the judgment result of step S13 is the first condition C1, execute step S14: connect the short-range wireless communication chip and the short-range wireless communication antenna of the charging module set by the first infrared sensor; and when the judgment result of step S13 is the second condition C2, execute step S15: connect the short-range wireless communication chip and the short-range wireless communication antenna of the charging module set by the second infrared sensor. The above steps are applicable to Figure 1 The wireless charging device 1 is shown, and each step is described in detail below based on the operation of the wireless charging device 1 .

[0050] In step S11 and step S12, the microcontroller 151 is initialized and determines whether the sensing signal of one of the infrared sensor 13_1 and the infrared sensor 13_2 has a preset potential. Specifically, when the determination result of step S12 is that the sensing signal of one of the infrared sensor 13_1 and the infrared sensor 13_2 has the preset potential, step S13 is executed. When the determination result of step S12 is that the sensing signal of neither the infrared sensor 13_1 nor the infrared sensor 13_2 has the preset potential, step S11 and the steps subsequent to step S11 are executed again.

[0051] In step S13, the microcontroller 151 determines which sensing signal of the infrared sensor 13_1 and the infrared sensor 13_2 has a preset potential. Specifically, when the determination result of step S13 is that the sensing signal of the infrared sensor 13_1 has a preset potential (first condition C1), step S14 is executed, and when the determination result of step S13 is that the sensing signal of the infrared sensor 13_2 has a preset potential (second condition C2), step S15 is executed. Further, when the determination result of step S13 is that the sensing signals of both the infrared sensor 13_1 and the infrared sensor 13_2 have a preset potential, the preset order may be to execute step S14 first and then execute step S15.

[0052] In step S14, the switch component 14 conducts the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_1 of the charging module 12_1 provided with the first infrared sensor 13_1. Specifically, after the switch component 14 conducts the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_1, the short-range wireless communication chip 11 can perform wireless communication through the short-range wireless communication antenna 121_1.

[0053] In step S15, the switch component 14 conducts the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_2 of the charging module 12_2 provided by the second infrared sensor 13_2. Specifically, after the switch component 14 conducts the short-range wireless communication chip 11 and the short-range wireless communication antenna 121_2, the short-range wireless communication chip 11 can perform wireless communication through the short-range wireless communication antenna 121_2.

[0054] In particular, the above step S12 is a selectively executed step. In one embodiment, after the step S11 is executed, the step S13 and its subsequent steps can be directly executed.

[0055] Please refer to Figure 1 and Figure 4 , Figure 4 FIG. 1 is a control flow chart of a charging module of a wireless charging device 1 in an embodiment of the present application. In this embodiment, the control flow of the wireless charging device includes Figure 3 The steps S11 to S15 of controlling the switch assembly shown in FIG. 1 may further include: Figure 4 Step S16 shown: obtaining the data to be identified from the turned-on short-distance wireless communication antenna through the short-distance wireless communication chip; step S17: determining whether the data to be identified meets the preset charging standard; when the determination result of step S17 is yes, executing step S18: controlling the charging module corresponding to the turned-on short-distance wireless communication antenna to output power; when the determination result of step S17 is no, executing step S20: sending a notification message; step S19: determining whether the sensing signal corresponding to the charging module that outputs power is converted from having a preset potential to not having a preset potential; when the determination result of step S19 is yes, executing step S12 and the steps subsequent to step S12; and when the determination result of step S19 is no, continuing to execute step S18. The above steps are applicable to Figure 1 The wireless charging device 1 is shown, and each step is described in detail below based on the operation of the wireless charging device 1 .

[0056] In step S16, the microcontroller 151 obtains the data to be identified from the turned-on short-distance wireless communication antenna 121_1 and / or the short-distance wireless communication antenna 121_2 through the short-distance wireless communication chip 11. Specifically, after the short-distance wireless communication chip 11 is connected with the short-distance wireless communication antenna 121_1 of the charging module 12_1 provided by the first infrared sensor 13_1 and / or the short-distance wireless communication antenna 121_2 of the charging module 12_2 provided by the second infrared sensor 13_2 through steps S14 and S15, the microcontroller 151 can obtain the data to be identified wirelessly transmitted from the turned-on short-distance wireless communication antenna 121_1 and / or the short-distance wireless communication antenna 121_2 through the short-distance wireless communication chip 11.

[0057] In step S17, the microcontroller 151 determines whether the data to be identified meets the preset charging standard. Specifically, when the judgment result of step S17 is that the data to be identified meets the preset charging standard, step S18 is executed, and when the judgment result of step S17 is that the data to be identified does not meet the preset charging standard, step S20 is executed. Further, the preset charging standard can be an interconnection standard for power transmission, such as power transmission efficiency and wireless charging power. For example, when the data to be identified can receive 70% power transmission efficiency and 5 watts (W) of wireless charging power, it means that the preset charging standard is met.

[0058] In step S18, the microcontroller 151 controls the charging module 12_1 corresponding to the turned-on short-distance wireless communication antenna 121_1 or / and the charging module 12_2 corresponding to the short-distance wireless communication antenna 121_2 to output power through the charging controller 152. Specifically, when it is determined that the data to be identified transmitted by the object placed on the charging module 12_1 or / and the charging module 12_2 meets the preset charging standard, the charging controller 152 can control the charging module 12_1 or / and the charging module 12_2 on which the object is placed to output power. More specifically, the turned-on short-distance wireless communication antenna 121_1 or / and the short-distance wireless communication antenna 121_2 can transmit the power information of the object to be charged to the microcontroller 151 through the Qi protocol, and the microcontroller 151 generates control parameters such as charging frequency and wattage and controls the corresponding charging module 12_1 or / and the charging module 12_2 to output power through the charging controller 152. In addition, during the process of the charging module 12_1 and / or the charging module 12_2 outputting power, the microcontroller 151 may also execute a foreign object detection (FOD) program.

[0059] In step S19, the microcontroller 151 determines whether the sensing signal corresponding to the charging module 12_1 or / and the charging module 12_2 that outputs power is converted from having a preset potential to not having a preset potential. Specifically, when the judgment result of step S19 is that the sensing signal corresponding to the charging module 12_1 or / and the charging module 12_2 that outputs power is converted from having a preset potential to not having a preset potential, step S12 is executed. When the judgment result of step S19 is that the sensing signal corresponding to the charging module 12_1 or / and the charging module 12_2 that does not output power is converted from having a preset potential to not having a preset potential, step S18 is continued. Further, when the judgment result of step S19 is that the sensing signal corresponding to the charging module 12_1 or / and the charging module 12_2 that outputs power is converted from having a preset potential to not having a preset potential, the charging controller 152 can control the charging module 12_1 or / and the charging module 12_2 that outputs power to stop outputting power.

[0060] In step S20, the microcontroller 151 may send a notification message through an output component. Specifically, the output component is connected to the microcontroller 151 to send the notification message under the control of the microcontroller 151. For example, the output component may be an output component such as a prompt light, a display, a speaker, or a wired or wireless communication port.

[0061] It should be noted that the above embodiment exemplarily takes two groups of charging modules and infrared sensors as an example. In other embodiments, the wireless charging device 1 may include more groups of charging modules and infrared sensors.

[0062] In one or more embodiments of the present application, the wireless charging device of the present application can be applied to a vehicle-mounted device, such as a self-driving car, an electric car, or a semi-self-driving car, etc.

[0063] Through the above structure, the wireless charging device 1 in the present application can use multiple infrared sensors arranged in multiple charging modules to determine whether there is an object placed in the charging module, and use the switch component 14 to conduct the short-range wireless communication chip 11 and the short-range wireless communication antenna of the charging module where the object is placed. Therefore, compared with the wireless charging device that uses multiple short-range wireless communication chips to conduct the short-range wireless communication antennas included in each of the multiple charging modules, the wireless charging device 1 in the present application can use a short-range wireless communication chip 11 to conduct the short-range wireless communication antennas included in each of the multiple charging modules without changing the function, thereby reducing the use cost of the short-range wireless communication chip 11, optimizing the circuit and increasing the accuracy of short-range wireless communication judgment. In addition, compared with the wireless charging device that does not adjust the resistance value of the infrared sensor, the wireless charging device 1 in the present application can also adjust the resistance value of the multiple infrared sensors when the objects placed in the charging module have different materials to obtain a more accurate sensing effect, so that the control module 15 can use the sensing signals in the multiple infrared sensors to accurately determine whether the object is in the correct position in the multiple charging modules to achieve accurate positioning.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A wireless charging device, characterized in that: include: A short-range wireless communication chip; A plurality of charging modules, each of the plurality of charging modules comprises a short-range wireless communication antenna; A plurality of infrared sensors, wherein the infrared sensors are arranged in a one-to-one correspondence with the charging modules; a switch component, the switch component connecting the short-range wireless communication chip and the plurality of charging modules; as well as A control module, the control module is connected to the short-range wireless communication chip, the multiple charging modules, the multiple infrared sensors and the switch component, and the control module is used to control the switch component to connect the short-range wireless communication chip and the short-range wireless communication antenna of a target module among the multiple charging modules according to the respective sensing signals of the multiple infrared sensors.

2. The wireless charging device according to claim 1, characterized in that: The control module is used to use one of the plurality of charging modules corresponding to the sensing signal with a preset potential as the target module.

3. The wireless charging device according to claim 1, characterized in that: The control module is used to control the switch component to connect at least two charging modules among the multiple charging modules, each of which is provided with the at least two infrared sensors, to the short-range wireless communication chip in sequence in a preset order when the sensing signal of each of at least two infrared sensors among the multiple infrared sensors has a preset potential, and the at least two charging modules include the target module.

4. The wireless charging device according to claim 1, characterized in that: The control module is also used to obtain a piece of data to be identified from the turned-on short-range wireless communication antenna through the short-range wireless communication chip, determine whether it meets a preset charging standard based on the data to be identified, and control the target module to output power when it is determined that the data to be identified meets the preset charging standard.

5. The wireless charging device according to claim 4, characterized in that: The wireless charging device also includes: an output component, the output component is connected to the control module, Wherein, the control module is further used to send a notification message through the output component when it is determined that the data to be identified does not meet the preset charging standard.

6. The wireless charging device according to claim 4, characterized in that: The control module is further used for controlling the target module to stop outputting power when the sensing signal corresponding to the target module changes from having the preset potential to not having the preset potential.

7. The wireless charging device according to claim 1, characterized in that: The multiple charging modules also include: a substrate; and a charging coil, wherein the charging coil is disposed on the substrate along a setting direction, and a distance exists between a projection of the charging coil in the setting direction and projections of the plurality of infrared sensors in the setting direction, Wherein, the short-range wireless communication antenna is arranged on the substrate.

8. The wireless charging device according to claim 1, characterized in that: The multiple charging modules also include: a substrate; and a charging coil, the charging coil being disposed on the substrate, The short-range wireless communication antenna is disposed on the substrate along a setting direction, and a distance exists between a projection of the short-range wireless communication antenna in the setting direction and projections of the plurality of infrared sensors in the setting direction.

9. The wireless charging device according to claim 1, characterized in that: The plurality of infrared sensors are all reflective photointerrupters, and the plurality of infrared sensors include a variable resistor.

10. The wireless charging device according to claim 1, characterized in that: The switch component is a radio frequency switch component.

Images