Wireless signal receiving device, wireless charging device, and autonomous mobile device

Abstract

The utility model provides a wireless signal receiving device, a wireless charging device and an autonomous moving device. Wherein the wireless signal receiving device is used for receiving a signal sent by the wireless charging device, and the wireless charging device sends out different voltages according to communication information; the wireless signal receiving device comprises a receiving coil which is used for receiving voltage sent by the wireless charging device; the full-bridge rectification circuit is connected with the receiving coil and is used for processing the voltage; the first capacitor is connected with the full-bridge rectifying circuit in parallel, and the voltage of the first capacitor changes according to the voltage sent by the wireless charging device; the first control assembly is connected with the first capacitor and is used for acquiring the voltage of the first capacitor; and the decoding assembly is connected with the first control assembly and is used for determining corresponding communication information according to the change of the voltage of the first capacitor. According to the utility model, the wireless charging device can emit different voltage signals, so that the voltage in the wireless signal receiving device is changed, and communication information is determined according to the voltage change, thereby realizing unidirectional information transmission from the wireless charging device to the wireless signal receiving device.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless power transmission, and in particular to a wireless signal receiving device, a wireless charging device and an autonomous mobile device. Background Art

[0002] In recent years, autonomous mobile devices such as autonomous mobile robots (AMR) or automated guided vehicles (AGV) have been widely used in various scenarios, such as smart logistics warehousing scenarios, due to their autonomy and high efficiency. In related technologies, the communication between the wireless charging device and the wireless signal receiving device of the autonomous mobile device has the following modes: (1) an additional wireless communication module, such as Bluetooth; (2) an additional wire reel communication circuit, such as a communication coil; (3) Amplitude shift keying (ASK) is achieved through an additional circuit, such as switching a resonant capacitor. However, whether it is an additional communication module or an additional circuit, it will increase the cost and size. Utility Model Content

[0003] The utility model aims to solve or improve at least one of the above technical problems.

[0004] Therefore, the first object of the present invention is to provide a wireless signal receiving device.

[0005] The second objective of the present invention is to provide a wireless charging device.

[0006] The third objective of the present utility model is to provide an autonomous mobile device.

[0007] To achieve the first purpose of the utility model, the technical solution of the utility model provides a wireless signal receiving device for receiving a signal emitted by a wireless charging device, and the wireless charging device emits different voltages according to the communication information; the wireless signal receiving device includes: a receiving coil, the receiving coil is used to receive the voltage emitted by the wireless charging device; a full-bridge rectifier circuit, the full-bridge rectifier circuit is connected to the receiving coil, and is used to process the voltage; a first capacitor, the first capacitor is connected in parallel with the full-bridge rectifier circuit, and the voltage of the first capacitor changes according to the voltage emitted by the wireless charging device; a first control component, the first control component is connected to the first capacitor, and is used to obtain the voltage of the first capacitor; a decoding component, the decoding component is connected to the first control component, and is used to determine the corresponding communication information according to the change of the voltage of the first capacitor.

[0008] The wireless signal receiving device provided by the utility model can receive the signal sent by the wireless charging device, and the wireless charging device can also send different voltages according to the communication information, that is, the voltage sent by the wireless charging device to the wireless signal receiving device is variable, so that the voltage received by the wireless signal receiving device is also variable. Among them, the wireless signal receiving device mainly includes: a receiving coil, a full-bridge rectifier circuit, a first capacitor, a first control component and a decoding component. The receiving coil is arranged relative to the wireless charging device and can receive the voltage signal sent by the wireless charging device. The full-bridge rectifier circuit is connected to the receiving coil. When the receiving coil receives the voltage signal sent by the wireless charging device, the full-bridge rectifier circuit will rectify the voltage signal and convert the received voltage signal into a DC power output. The output DC power is used to charge the battery or for other purposes. The first capacitor is connected in parallel with the full-bridge rectifier circuit and can filter the voltage output by the full-bridge rectifier circuit so that the voltage output by the full-bridge rectifier circuit tends to be smooth. At the same time, since the first capacitor and the full-bridge rectifier circuit are in a parallel relationship, the voltage of the full-bridge rectifier circuit is the same as the voltage across the first capacitor, and the voltage of the full-bridge rectifier circuit changes according to the voltage emitted by the wireless charging device, so the voltage across the first capacitor also changes with the different voltages emitted by the wireless charging device. The first control component is connected to the first capacitor, and the decoding component is connected to the first control component. The first control component obtains the voltage across the first capacitor in real time, and then sends the voltage across the first capacitor to the decoding component. The decoding component assigns a value to the voltage across the first capacitor and then decodes it, thereby obtaining the communication information represented by the change in the voltage of the first capacitor, that is, the communication information emitted by the wireless charging device. Thus, without adding a communication module and additional circuit conditions, that is, without increasing the cost and volume, the wireless charging device can transmit information to the wireless signal receiving device in a one-way manner.

[0009] In addition, the technical solution provided by the utility model may also have the following additional technical features:

[0010] In some technical solutions, optionally, the wireless signal receiving device also includes: a battery; a first compensation circuit, the first compensation circuit is connected in series with the receiving coil; a synchronous buck circuit, one end of the synchronous buck circuit is connected to the first capacitor, and the other end of the synchronous buck circuit is connected to the battery.

[0011] In this technical solution, the wireless signal receiving device also includes: a battery, a first compensation circuit and a synchronous buck circuit. The first compensation circuit is connected in series with the receiving coil, and the first compensation circuit and the receiving coil receive the voltage output by the wireless charging device together. One end of the synchronous buck circuit is connected to the first capacitor, and the other end of the synchronous buck circuit is connected to the battery. After the first capacitor filters the voltage output by the full-bridge rectifier circuit, the synchronous buck circuit adjusts the smoothed voltage after filtering to a voltage that the battery can receive, so as to charge the battery. By setting the first compensation circuit, the synchronous buck circuit and the battery, the wireless charging device can charge the wireless signal receiving device.

[0012] In some technical schemes, optionally, the full-bridge rectifier circuit includes: a first switch tube, wherein the first end of the first switch tube is connected to the first end of the first capacitor; a second switch tube, wherein the first end of the second switch tube is connected to the second end of the first switch tube; the second end of the second switch tube is connected to the second end of the first capacitor; a third switch tube, wherein the first end of the third switch tube is connected to the first end of the first capacitor; and a fourth switch tube, wherein the first end of the fourth switch tube is connected to the second end of the third switch tube, and the second end of the fourth switch tube is connected to the second end of the first capacitor.

[0013] In this technical solution, the full-bridge rectifier circuit can be composed of four switch tubes, and the four switch tubes are respectively a first switch tube, a second switch tube, a third switch tube and a fourth switch tube. Among them, the first end of the first switch tube is connected to the first end of the first capacitor, the first end of the second switch tube is connected to the second end of the first switch tube, and the second end of the second switch tube is connected to the second end of the first capacitor, so that the first switch tube and the second switch tube are connected in series and then connected in parallel with the first capacitor. At the same time, the center point of the first switch tube and the second switch tube is connected in series with one end of the receiving coil through the first compensation circuit. The first end of the third switch tube is connected to the first end of the first capacitor, the first end of the fourth switch tube is connected to the second end of the third switch tube, and the second end of the fourth switch tube is connected to the second end of the first capacitor, so that the third switch tube is connected in series with the fourth switch tube and then connected in parallel with the first capacitor. At the same time, the center point of the third switch tube and the fourth switch tube is connected to the other end of the receiving coil. By connecting one end of the receiving coil to the center point between the first switch tube and the second switch tube through the first compensation circuit, and directly connecting the other end of the receiving coil to the center point between the third switch tube and the fourth switch tube, the full-bridge rectifier circuit is connected to the receiving coil, and then the voltage received by the receiving coil is converted into DC power output through the full-bridge rectifier circuit, thereby charging the battery.

[0014] In some technical solutions, optionally, the first compensation circuit includes: a second capacitor, the first end of the receiving coil is connected to the first switch tube and the second switch tube through the second capacitor; the second end of the receiving coil is connected to the third switch tube and the fourth switch tube.

[0015] In this technical solution, the first compensation circuit can be a second capacitor, the receiving coil is connected in series with the second capacitor, and the receiving coil and the second capacitor can convert the received high-frequency alternating magnetic energy into high-frequency alternating electrical energy. At the same time, after being connected in series with the second capacitor, the first end of the receiving coil is connected to the center point between the first switch tube and the second switch tube, and the second end of the receiving coil is directly connected to the center point between the third switch tube and the fourth switch tube, so that the received voltage is output to the full-bridge rectifier circuit, so that the full-bridge rectifier circuit converts the high-frequency alternating electrical energy.

[0016] In some technical schemes, optionally, the synchronous buck circuit includes: a fifth switch tube, the first end of the fifth switch tube is connected to the first end of the first capacitor; a sixth switch tube, the first end of the sixth switch tube is connected to the second end of the fifth switch tube, and the second end of the sixth switch tube is connected to the second end of the first capacitor; a first inductor, the first end of the battery is connected to the fifth switch tube and the sixth switch tube through the first inductor; a third capacitor, the first end of the third capacitor is connected to the first end of the battery, the second end of the third capacitor is connected to the second end of the battery, and the second end of the third capacitor is grounded.

[0017] In this technical solution, the synchronous buck circuit includes: a fifth switch tube, a sixth switch tube, a first inductor and a third capacitor. Among them, the first end of the fifth switch tube is connected to the first end of the first capacitor, the first end of the sixth switch tube is connected to the second end of the fifth switch tube, and the second end of the sixth switch tube is connected to the second end of the first capacitor, so that the fifth switch tube and the sixth switch tube are connected in parallel with the first capacitor, and the synchronous buck circuit is connected to the first capacitor, so that the voltage after filtering by the first capacitor can be adjusted. One end of the first inductor is connected to the center point between the fifth switch tube and the sixth switch, and the other end is connected to the battery and the third capacitor. The first end of the third capacitor is connected to the first end of the battery, the second end of the third capacitor is connected to the second end of the battery, and the second end of the third capacitor is grounded. The voltage is adjusted by the synchronous buck circuit.

[0018] To achieve the second purpose of the utility model, the technical solution of the utility model provides a wireless charging device for emitting different voltages to the wireless signal receiving device in any of the above-mentioned technical solutions; the wireless charging device includes: a second control component; a pulse signal transmitter, which is connected to the second control component and is used to emit different pulse signals according to the communication information emitted by the second control component; a full-bridge inverter circuit, which is connected to the pulse signal transmitter, and the full-bridge inverter circuit switches between a full-bridge working mode and a half-bridge working mode according to different pulse signals emitted by the pulse signal transmitter to generate different voltages; a transmitting coil, which is connected to the full-bridge inverter circuit and is used to emit different voltages to the wireless signal receiving device.

[0019] The utility model provides a wireless charging device, which can send different voltages to a wireless signal receiving device. The wireless charging device mainly includes: a second control component, a pulse signal transmitter, a full-bridge inverter circuit and a transmitting coil. Among them, the second control component can generate different communication information. The pulse signal transmitter is connected to the second control component, and the second control component transmits the communication information to the pulse signal transmitter. The pulse signal transmitter can generate and transmit different pulse signals according to different communication information. The full-bridge inverter circuit is connected to the pulse signal transmitter, and the pulse signal transmitter sends the generated pulse signal to the full-bridge inverter circuit, thereby controlling the switch tube in the full-bridge inverter circuit to work, so that the full-bridge inverter circuit switches between the full-bridge working mode and the half-bridge working mode. It can be understood that the voltage generated by the full-bridge inverter circuit in the full-bridge working mode is different from the voltage generated in the half-bridge working mode. The transmitting coil is connected to the full-bridge inverter circuit, and the transmitting coil sends the different voltages obtained by the full-bridge inverter circuit to the wireless signal receiving device. The utility model obtains a pulse signal according to communication information through a pulse signal transmitter and sends it to a full-bridge inverter circuit, thereby controlling the full-bridge inverter circuit to switch between a full-bridge working mode and a half-bridge working mode, so that the full-bridge inverter circuit can emit different voltages, and then transmit the different voltages to a wireless signal receiving device through a transmitting coil, and the wireless signal receiving device decodes the obtained voltage to obtain corresponding communication information, thereby realizing unidirectional information transmission from a wireless charging device to a wireless signal receiving device without adding a communication module and an additional circuit, that is, without increasing the cost.

[0020] In some technical solutions, optionally, the wireless charging device also includes: a motor; a fourth capacitor, a first end of the fourth capacitor is connected to the first end of the motor, and a second end of the fourth capacitor is connected to the second end of the motor.

[0021] In this technical solution, the wireless charging device also includes: a motor and a fourth capacitor. The motor provides power for the full-bridge inverter circuit and the wireless charging device. The first end of the fourth capacitor is connected to the first end of the motor, the second end of the fourth capacitor is connected to the second end of the motor, and the fourth capacitor is connected in parallel with the full-bridge inverter circuit. The fourth capacitor can protect the full-bridge inverter circuit and improve the stability of the full-bridge inverter circuit.

[0022] In some technical schemes, optionally, the full-bridge inverter circuit includes: a seventh switch tube, the first end of the seventh switch tube is connected to the first end of the fourth capacitor; an eighth switch tube, the first end of the eighth switch tube is connected to the second end of the seventh switch tube; the second end of the eighth switch tube is connected to the second end of the fourth capacitor, and the second end of the eighth switch tube is grounded; a ninth switch tube, the first end of the ninth switch tube is connected to the first end of the fourth capacitor; a tenth switch tube, the first end of the tenth switch tube is connected to the second end of the ninth switch tube, and the second end of the tenth switch tube is connected to the second end of the fourth capacitor.

[0023] In this technical solution, the full-bridge inverter circuit can be composed of four switch tubes, namely the seventh switch tube, the eighth switch tube, the ninth switch tube and the tenth switch tube. Among them, the first end of the seventh switch tube is connected to the first end of the fourth capacitor, the first end of the eighth switch tube is connected to the second end of the seventh switch tube, and the second end of the eighth switch tube is connected to the second end of the fourth capacitor, so that the seventh switch tube and the eighth switch tube are connected in parallel with the fourth capacitor, and then the seventh switch tube and the eighth switch tube are connected in parallel with the motor. At the same time, the second end of the eighth switch tube is grounded. The first end of the ninth switch tube is connected to the first end of the fourth capacitor, the first end of the tenth switch tube is connected to the second end of the ninth switch tube, and the second end of the tenth switch tube is connected to the second end of the fourth capacitor, so that the ninth switch tube and the tenth switch tube are connected in parallel with the fourth capacitor, and then the ninth switch tube and the tenth switch tube are connected in parallel with the motor. The full-bridge inverter circuit can convert the DC power emitted by the motor into high-frequency AC power, and then convert it into high-frequency alternating magnetic energy through the transmitting coil and transmit it to the wireless signal receiving device. Among them, since the full-bridge inverter circuit is connected to the pulse signal transmitter, the working state of the switch tube in the full-bridge inverter circuit is controlled by the pulse signal. When the seventh switch tube, the eighth switch tube, the ninth switch tube and the tenth switch tube are all in working state, the full-bridge inverter circuit works in the full-bridge working mode. When the seventh switch tube and the eighth switch tube are in working state or the ninth switch tube and the tenth switch tube are in working state, the full-bridge inverter circuit works in the half-bridge working mode. The full-bridge inverter circuit switches between the full-bridge working mode and the half-bridge working mode, so that the voltage output by the full-bridge inverter circuit changes, thereby achieving the technical effect of transmitting communication information to the wireless signal receiving module.

[0024] In some technical solutions, optionally, the wireless charging device further includes: a second compensation circuit, and the second compensation circuit is connected in series with the transmitting coil.

[0025] In the technical solution, the wireless charging device further includes: a second compensation circuit. The second compensation circuit is connected in series with the transmitting coil. The second compensation circuit and the transmitting coil together convert the high-frequency alternating electric energy output by the full-bridge inverter circuit into high-frequency alternating magnetic energy and transmit it to the wireless signal receiving device.

[0026] In some technical solutions, optionally, the second compensation circuit includes: a fifth capacitor, one end of the fifth capacitor is connected to the transmitting coil, and the other end of the fifth capacitor is connected to the full-bridge inverter circuit.

[0027] In this technical solution, the second compensation circuit can be a fifth capacitor, the first end of the fifth capacitor can be connected to the first end of the transmitting coil, and the second end of the fifth capacitor is connected to the center point between the ninth switch tube and the tenth switch tube. The second end of the transmitting coil is connected to the center point between the seventh switch tube and the eighth switch tube. The connection between the transmitting coil and the fifth capacitor and the full-bridge inverter circuit is realized. The high-frequency alternating electric energy of the full-bridge inverter circuit is converted into high-frequency alternating magnetic energy and transmitted to the wireless signal receiving device.

[0028] To achieve the third purpose of the utility model, the technical solution of the utility model provides an autonomous mobile device, including: a wireless signal receiving device as described in any one of the above items, and / or a wireless charging device as described in any one of the above items.

[0029] The autonomous mobile device provided by the utility model includes: the wireless signal receiving device in any of the above technical solutions, and / or the wireless charging device in any of the above technical solutions, which can achieve the technical effects of any of the above technical solutions. No further details will be given here.

[0030] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 It is a structural block diagram of a wireless charging device and a wireless signal receiving device according to an embodiment of the utility model;

[0033] Figure 2 FIG. 4 is a diagram showing a voltage change of a first capacitor according to an embodiment of the present utility model.

[0034] in, Figure 1The corresponding relationship between the reference numerals and the component names is as follows:

[0035] 10 wireless charging device, 102 second control component, 104 pulse signal transmitter, 106 full-bridge inverter circuit, 108 transmitting coil, DC motor, C1 fourth capacitor, Q1 seventh switch tube, Q2 eighth switch tube, Q3 ninth switch tube, Q4 tenth switch tube, 110 second compensation circuit, C2 fifth capacitor, 20 wireless signal receiving device, 202 first control component, 204 decoding component, 206 full-bridge rectifier circuit, 208 receiving coil, C3 first capacitor, BT battery, 210 first compensation circuit, 212 synchronous buck circuit, Q5 first switch tube, Q6 second switch tube, Q7 third switch tube, Q8 fourth switch tube, C4 second capacitor, Q9 fifth switch tube, Q10 sixth switch tube, L1 first inductor, C5 third capacitor. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0038] Refer to the following Figure 1 and Figure 2 The wireless signal receiving device 20 and the wireless charging device 10 according to some embodiments of the present invention are described.

[0039] like Figure 1 As shown, the technical solution of the utility model provides a wireless signal receiving device 20 for receiving a signal sent by a wireless charging device 10, and the wireless charging device 10 sends different voltages according to the communication information; the wireless signal receiving device 20 includes: a receiving coil 208, the receiving coil 208 is used to receive the voltage sent by the wireless charging device 10; a full-bridge rectifier circuit 206, the full-bridge rectifier circuit 206 is connected to the receiving coil 208, and is used to process the voltage; a first capacitor C3, the first capacitor C3 is connected in parallel with the full-bridge rectifier circuit 206, and the voltage of the first capacitor C3 changes according to the voltage sent by the wireless charging device 10; a first control component 202, the first control component 202 is connected to the first capacitor C3, and is used to obtain the voltage of the first capacitor C3; a decoding component 204, the decoding component 204 is connected to the first control component 202, and is used to determine the corresponding communication information according to the change of the voltage of the first capacitor C3.

[0040] The wireless signal receiving device 20 provided by the utility model can receive the signal sent by the wireless charging device 10, and the wireless charging device 10 can also send different voltages according to the communication information, that is, the voltage sent by the wireless charging device 10 to the wireless signal receiving device 20 is variable, so that the voltage received by the wireless signal receiving device 20 is also variable. Among them, the wireless signal receiving device 20 mainly includes: a receiving coil 208, a full-bridge rectifier circuit 206, a first capacitor C3, a first control component 202 and a decoding component 204. The receiving coil 208 is arranged opposite to the wireless charging device 10 and can receive the voltage signal sent by the wireless charging device 10. The full-bridge rectifier circuit 206 is connected to the receiving coil 208. When the receiving coil 208 receives the voltage signal sent by the wireless charging device 10, the full-bridge rectifier circuit 206 will rectify the voltage signal and convert the received voltage signal into DC power output. The output DC power can be used to charge the battery BT or for other purposes. The first capacitor C3 is connected in parallel with the full-bridge rectifier circuit 206, and can filter the voltage output by the full-bridge rectifier circuit 206, so that the voltage output by the full-bridge rectifier circuit 206 tends to be smooth. At the same time, since the first capacitor C3 and the full-bridge rectifier circuit 206 are in a parallel relationship, the voltage of the full-bridge rectifier circuit 206 is the same as the voltage across the first capacitor C3, and the voltage of the full-bridge rectifier circuit 206 changes according to the voltage emitted by the wireless charging device 10, so the voltage across the first capacitor C3 also changes with the different voltages emitted by the wireless charging device 10. The first control component 202 is connected to the first capacitor C3, and the decoding component 204 is connected to the first control component 202. Exemplarily, the first control component 202 can be built with a DSP (Digital Signal Processing) chip TMS32F28035 as the main control chip. The first control component 202 obtains the voltage across the first capacitor C3 in real time, and then sends the voltage across the first capacitor C3 to the decoding component 204. The decoding component 204 assigns a value to the voltage across the first capacitor C3 and then decodes it, thereby obtaining the communication information represented by the change in the voltage of the first capacitor C3, that is, the communication information output by the wireless charging device 10. Thus, without adding a communication module and an additional circuit, that is, without increasing the cost and volume, the wireless charging device 10 can transmit information to the wireless signal receiving device 20 in a unidirectional manner.

[0041] In some embodiments, optionally, the wireless signal receiving device 20 also includes: a battery BT; a first compensation circuit 210, the first compensation circuit 210 is connected in series with the receiving coil 208; a synchronous buck circuit 212, one end of the synchronous buck circuit 212 is connected to the first capacitor C3, and the other end of the synchronous buck circuit 212 is connected to the battery BT.

[0042] In this embodiment, the wireless signal receiving device 20 further includes: a battery BT, a first compensation circuit 210 and a synchronous buck circuit 212. The first compensation circuit 210 is connected in series with the receiving coil 208, and the first compensation circuit 210 and the receiving coil 208 receive the voltage output by the wireless charging device 10 together. One end of the synchronous buck circuit 212 is connected to the first capacitor C3, and the other end of the synchronous buck circuit 212 is connected to the battery BT. After the first capacitor C3 filters the voltage output by the full-bridge rectifier circuit 206, the synchronous buck circuit 212 adjusts the smoothed voltage after filtering, and adjusts the voltage to a voltage that the battery BT can receive, so as to charge the battery BT. By setting the first compensation circuit 210, the synchronous buck circuit 212 and the battery BT, the wireless charging device 10 can charge the wireless signal receiving device 20.

[0043] In some embodiments, optionally, the full-bridge rectifier circuit 206 includes: a first switch tube Q5, wherein the first end of the first switch tube Q5 is connected to the first end of the first capacitor C3; a second switch tube Q6, wherein the first end of the second switch tube Q6 is connected to the second end of the first switch tube Q5; the second end of the second switch tube Q6 is connected to the second end of the first capacitor C3; a third switch tube Q7, wherein the first end of the third switch tube Q7 is connected to the first end of the first capacitor C3; and a fourth switch tube Q8, wherein the first end of the fourth switch tube Q8 is connected to the second end of the third switch tube Q7, and the second end of the fourth switch tube Q8 is connected to the second end of the first capacitor C3.

[0044] In this embodiment, the full-bridge rectifier circuit 206 may be composed of four switch tubes, and the four switch tubes are respectively a first switch tube Q5, a second switch tube Q6, a third switch tube Q7, and a fourth switch tube Q8. Exemplarily, the four switch tubes may be four power MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistor). Among them, the first end of the first switch tube Q5 is connected to the first end of the first capacitor C3, the first end of the second switch tube Q6 is connected to the second end of the first switch tube Q5, and the second end of the second switch tube Q6 is connected to the second end of the first capacitor C3, so that the first switch tube Q5 and the second switch tube Q6 are connected in series and then connected in parallel with the first capacitor C3. At the same time, the center point of the first switch tube Q5 and the second switch tube Q6 is connected in series with one end of the receiving coil 208 through the first compensation circuit 210. The first end of the third switch tube Q7 is connected to the first end of the first capacitor C3, the first end of the fourth switch tube Q8 is connected to the second end of the third switch tube Q7, and the second end of the fourth switch tube Q8 is connected to the second end of the first capacitor C3, so that the third switch tube Q7 and the fourth switch tube Q8 are connected in series and then connected in parallel with the first capacitor C3. At the same time, the center point between the third switch tube Q7 and the fourth switch tube Q8 is connected to the other end of the receiving coil 208. By connecting one end of the receiving coil 208 to the center point between the first switch tube Q5 and the second switch tube Q6 through the first compensation circuit 210, and the other end of the receiving coil 208 is directly connected to the center point between the third switch tube Q7 and the fourth switch tube Q8, the full-bridge rectifier circuit 206 is connected to the receiving coil 208, and then the voltage received by the receiving coil 208 is converted into DC power output through the full-bridge rectifier circuit 206, so as to charge the battery BT.

[0045] In some embodiments, optionally, the first compensation circuit 210 includes: a second capacitor C4, the first end of the receiving coil 208 is connected to the first switch tube Q5 and the second switch tube Q6 through the second capacitor C4; the second end of the receiving coil 208 is connected to the third switch tube Q7 and the fourth switch tube Q8.

[0046] In this embodiment, the first compensation circuit 210 can be the second capacitor C4, the receiving coil 208 is connected in series with the second capacitor C4, and the receiving coil 208 and the second capacitor C4 can convert the received high-frequency alternating magnetic energy into high-frequency alternating electrical energy. At the same time, after being connected in series with the second capacitor C4, the first end of the receiving coil 208 is connected to the center point between the first switch tube Q5 and the second switch tube Q6, and the second end of the receiving coil 208 is directly connected to the center point between the third switch tube Q7 and the fourth switch tube Q8, so that the received voltage is output to the full-bridge rectifier circuit 206, so that the full-bridge rectifier circuit 206 converts the high-frequency alternating electrical energy.

[0047] In some embodiments, optionally, the synchronous buck circuit 212 includes: a fifth switch tube Q9, a first end of the fifth switch tube Q9 is connected to the first end of the first capacitor C3; a sixth switch tube Q10, a first end of the sixth switch tube Q10 is connected to the second end of the fifth switch tube Q9, and the second end of the sixth switch tube Q10 is connected to the second end of the first capacitor C3; a first inductor L1, a first end of the battery BT is connected to the fifth switch tube Q9 and the sixth switch tube Q10 through the first inductor L1; a third capacitor C5, a first end of the third capacitor C5 is connected to the first end of the battery BT, a second end of the third capacitor C5 is connected to the second end of the battery BT, and the second end of the third capacitor C5 is grounded.

[0048] In this embodiment, the synchronous buck circuit 212 includes: a fifth switch tube Q9, a sixth switch tube Q10, a first inductor L1 and a third capacitor C5. Among them, the first end of the fifth switch tube Q9 is connected to the first end of the first capacitor C3, the first end of the sixth switch tube Q10 is connected to the second end of the fifth switch tube Q9, and the second end of the sixth switch tube Q10 is connected to the second end of the first capacitor C3, so that the fifth switch tube Q9 and the sixth switch tube Q10 are connected in parallel with the first capacitor C3, so that the synchronous buck circuit 212 is connected to the first capacitor C3, so that the voltage after filtering by the first capacitor C3 can be adjusted. One end of the first inductor L1 is connected to the center point between the fifth switch tube Q9 and the sixth switch, and the other end is connected to the battery BT and the third capacitor C5. The first end of the third capacitor C5 is connected to the first end of the battery BT, the second end of the third capacitor C5 is connected to the second end of the battery BT, and the second end of the third capacitor C5 is grounded. The voltage is adjusted by the synchronous buck circuit 212. Exemplarily, the fifth switch tube Q9 and the sixth switch tube Q10 may be power MOSFET tubes.

[0049] like Figure 1 As shown, an embodiment of the utility model provides a wireless charging device 10 for sending different voltages to the wireless signal receiving device 20 in any of the above embodiments; the wireless charging device 10 includes: a second control component 102; a pulse signal transmitter 104, the pulse signal transmitter 104 is connected to the second control component 102, and is used to send different pulse signals according to the communication information sent by the second control component 102; a full-bridge inverter circuit 106, the full-bridge inverter circuit 106 is connected to the pulse signal transmitter 104, the full-bridge inverter circuit 106 switches between the full-bridge working mode and the half-bridge working mode according to the different pulse signals sent by the pulse signal transmitter 104, and generates different voltages; a transmitting coil 108, the transmitting coil 108 is connected to the full-bridge inverter circuit 106, and the transmitting coil 108 is used to send different voltages to the wireless signal receiving device 20.

[0050] The utility model provides a wireless charging device 10, which can send different voltages to a wireless signal receiving device 20. The wireless charging device 10 mainly includes: a second control component 102, a pulse signal transmitter 104, a full-bridge inverter circuit 106 and a transmitting coil 108. Among them, the second control component 102 can generate different communication information. Exemplarily, the second control component 102 can be built with a DSP chip TMS32F28035 as a main control chip. The pulse signal transmitter 104 is connected to the second control component 102, and the second control component 102 transmits the communication information to the pulse signal transmitter 104. The pulse signal transmitter 104 can generate and transmit different pulse signals according to different communication information. The full-bridge inverter circuit 106 is connected to the pulse signal transmitter 104, and the pulse signal transmitter 104 sends the generated pulse signal to the full-bridge inverter circuit 106, thereby controlling the switch tube in the full-bridge inverter circuit 106 to work, so that the full-bridge inverter circuit 106 switches between the full-bridge working mode and the half-bridge working mode. It can be understood that the voltage generated by the full-bridge inverter circuit 106 in the full-bridge working mode is different from the voltage generated in the half-bridge working mode. The transmitting coil 108 is connected to the full-bridge inverter circuit 106, and the transmitting coil 108 sends the different voltages obtained by the full-bridge inverter circuit 106 to the wireless signal receiving device 20. The utility model obtains a pulse signal according to the communication information through the pulse signal transmitter 104 and sends it to the full-bridge inverter circuit 106, thereby controlling the full-bridge inverter circuit 106 to switch between the full-bridge working mode and the half-bridge working mode, so that the full-bridge inverter circuit 106 can emit different voltages, and then transmit the different voltages to the wireless signal receiving device 20 through the transmitting coil 108. The wireless signal receiving device 20 then decodes the obtained voltage to obtain the corresponding communication information, thereby realizing the unidirectional transmission of information from the wireless charging device 10 to the wireless signal receiving device 20 without adding communication modules and additional circuits, that is, without increasing the cost and volume.

[0051] In some embodiments, optionally, the wireless charging device 10 further includes: a motor DC; a fourth capacitor C1, wherein a first end of the fourth capacitor C1 is connected to a first end of the motor DC, and a second end of the fourth capacitor C1 is connected to a second end of the motor DC.

[0052] In this embodiment, the wireless charging device 10 further includes: a motor DC and a fourth capacitor C1. The motor DC provides power to the full-bridge inverter circuit 106 and the wireless charging device 10. The first end of the fourth capacitor C1 is connected to the first end of the motor DC, the second end of the fourth capacitor C1 is connected to the second end of the motor DC, and the fourth capacitor C1 is connected in parallel with the full-bridge inverter circuit 106. The fourth capacitor C1 can protect the full-bridge inverter circuit 106 and improve the stability of the full-bridge inverter circuit 106.

[0053] In some embodiments, optionally, the full-bridge inverter circuit 106 includes: a seventh switch tube Q1, wherein the first end of the seventh switch tube Q1 is connected to the first end of the fourth capacitor C1; an eighth switch tube Q2, wherein the first end of the eighth switch tube Q2 is connected to the second end of the seventh switch tube Q1; the second end of the eighth switch tube Q2 is connected to the second end of the fourth capacitor C1, and the second end of the eighth switch tube Q2 is grounded; a ninth switch tube Q3, wherein the first end of the ninth switch tube Q3 is connected to the first end of the fourth capacitor C1; and a tenth switch tube Q4, wherein the first end of the tenth switch tube Q4 is connected to the second end of the ninth switch tube Q3, and the second end of the tenth switch tube Q4 is connected to the second end of the fourth capacitor C1.

[0054] In this embodiment, the full-bridge inverter circuit 106 may be composed of four switch tubes, namely, a seventh switch tube Q1, an eighth switch tube Q2, a ninth switch tube Q3, and a tenth switch tube Q4. Exemplarily, the four switch tubes may be four power MOSFET tubes. Among them, the first end of the seventh switch tube Q1 is connected to the first end of the fourth capacitor C1, the first end of the eighth switch tube Q2 is connected to the second end of the seventh switch tube Q1, and the second end of the eighth switch tube Q2 is connected to the second end of the fourth capacitor C1, so that the seventh switch tube Q1 and the eighth switch tube Q2 are connected in parallel with the fourth capacitor C1, and then the seventh switch tube Q1 and the eighth switch tube Q2 are connected in parallel with the motor DC. At the same time, the second end of the eighth switch tube Q2 is grounded. The first end of the ninth switch tube Q3 is connected to the first end of the fourth capacitor C1, the first end of the tenth switch tube Q4 is connected to the second end of the ninth switch tube Q3, and the second end of the tenth switch tube Q4 is connected to the second end of the fourth capacitor C1, so that the ninth switch tube Q3 and the tenth switch tube Q4 are connected in parallel with the fourth capacitor C1, and then the ninth switch tube Q3 and the tenth switch tube Q4 are connected in parallel with the motor DC. The full-bridge inverter circuit 106 can convert the direct current power emitted by the motor DC into high-frequency alternating current power, and then convert it into high-frequency alternating magnetic energy through the transmitting coil 108 and transmit it to the wireless signal receiving device 20. Among them, since the full-bridge inverter circuit 106 is connected to the pulse signal transmitter 104, the working state of the switch tube in the full-bridge inverter circuit 106 is controlled by the pulse signal. When the seventh switch tube Q1, the eighth switch tube Q2, the ninth switch tube Q3 and the tenth switch tube Q4 are all in the working state, the full-bridge inverter circuit 106 works in the full-bridge working mode. When the seventh switch tube Q1 and the eighth switch tube Q2 are in working state or the ninth switch tube Q3 and the tenth switch tube Q4 are in working state, the full-bridge inverter circuit 106 operates in the half-bridge working mode. The full-bridge inverter circuit 106 switches between the full-bridge working mode and the half-bridge working mode, so that the voltage output by the full-bridge inverter circuit 106 changes, thereby achieving the technical effect of transmitting communication information to the wireless signal receiving module.

[0055] In some embodiments, optionally, the wireless charging device 10 further includes: a second compensation circuit 110 , and the second compensation circuit 110 is connected in series with the transmitting coil 108 .

[0056] In this embodiment, the wireless charging device 10 further includes a second compensation circuit 110. The second compensation circuit 110 is connected in series with the transmitting coil 108. The second compensation circuit 110 and the transmitting coil 108 together convert the high-frequency alternating electric energy output by the full-bridge inverter circuit 106 into high-frequency alternating magnetic energy and transmit it to the wireless signal receiving device 20.

[0057] In some embodiments, optionally, the second compensation circuit 110 includes: a fifth capacitor C2 , one end of the fifth capacitor C2 is connected to the transmitting coil 108 , and the other end of the fifth capacitor C2 is connected to the full-bridge inverter circuit 106 .

[0058] In this embodiment, the second compensation circuit 110 may be a fifth capacitor C2, a first end of the fifth capacitor C2 may be connected to a first end of the transmitting coil 108, and a second end of the fifth capacitor C2 is connected to a center point between the ninth switch tube Q3 and the tenth switch tube Q4. The second end of the transmitting coil 108 is connected to a center point between the seventh switch tube Q1 and the eighth switch tube Q2. The connection between the transmitting coil 108 and the fifth capacitor C2 and the full-bridge inverter circuit 106 is realized. The high-frequency alternating electric energy of the full-bridge inverter circuit 106 is converted into high-frequency alternating magnetic energy and transmitted to the wireless signal receiving device 20.

[0059] like Figure 1 and Figure 2 As shown, Figure 2 FIG. 4 shows a voltage variation diagram of the first capacitor C3. Figure 2 The voltage V between the first capacitor C3, i.e., point A and point O AO The voltage at the time t0-t1 is greater than that at the time t1-t2. That is, during the time t0-t1, the full-bridge inverter circuit 106 in the wireless charging device 10 is in the full-bridge working mode, that is, the seventh switch tube Q1, the eighth switch tube Q2, the ninth switch tube Q3 and the tenth switch tube Q4 are all involved in the work. At this time, the voltage output by the wireless charging device 10 is relatively large, so the voltage received by the wireless signal receiving device 20 is also relatively large, that is, the voltage V AO During the time t1-t2, the full-bridge inverter circuit 106 in the wireless charging device 10 is in the half-bridge working mode, that is, only the seventh switch tube Q1 and the eighth switch tube Q2 are involved in the work or only the ninth switch tube Q3 and the tenth switch tube Q4 are involved in the work. At this time, the voltage output by the wireless charging device 10 is small, so the voltage received by the wireless signal receiving device 20 is also small, that is, the voltage V AO Since the full-bridge inverter circuit 106 in the wireless charging device 10 can switch between the full-bridge working mode and the half-bridge working mode, the voltage V AO As the operation mode of the full-bridge inverter circuit 106 changes, the second control component 102 and the pulse signal transmitter 104 in the wireless charging device 10 can convert the communication information into a pulse signal and send it to the full-bridge inverter circuit 106, so that the operation mode of the full-bridge inverter circuit 106 is associated with the communication information. At the same time, due to the voltage V AO The communication information is associated with the working mode of the full-bridge inverter circuit 106, so the voltage VAO The first control component 202 and the decoding component 204 can be associated with each other according to the voltage V of the first capacitor C3. AO The corresponding communication information is determined by the change in , thereby achieving the technical effect of unidirectional transmission of information from the wireless charging device 10 to the wireless signal receiving device 20.

[0060] Another embodiment of the present invention provides an autonomous mobile device, comprising: a wireless signal receiving device as described in any one of the above items, and / or a wireless charging device as described in any one of the above items.

[0061] The autonomous mobile device proposed in the present invention may include the wireless receiving device in any of the above embodiments and / or the wireless charging device in any of the above embodiments. Exemplarily, the autonomous mobile device may be an autonomous mobile robot or an automatic guided transport vehicle.

[0062] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0063] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0064] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless signal receiving device, characterized in that: Used to receive a signal sent by a wireless charging device, wherein the wireless charging device sends different voltages according to the communication information; the wireless signal receiving device comprises: A receiving coil, the receiving coil is used to receive the voltage emitted by the wireless charging device; a full-bridge rectifier circuit, the full-bridge rectifier circuit is connected to the receiving coil and is used to process the voltage; a first capacitor, the first capacitor being connected in parallel with the full-bridge rectifier circuit, and a voltage of the first capacitor changing according to a voltage emitted by the wireless charging device; a first control component, the first control component being connected to the first capacitor and being used to obtain a voltage of the first capacitor; A decoding component, the decoding component is connected to the first control component, and is used to determine the corresponding communication information according to the change of the voltage of the first capacitor.

2. The wireless signal receiving device according to claim 1, characterized in that: Also includes: Battery; a first compensation circuit, the first compensation circuit being connected in series with the receiving coil; A synchronous buck circuit, one end of the synchronous buck circuit is connected to the first capacitor, and the other end of the synchronous buck circuit is connected to the battery.

3. The wireless signal receiving device according to claim 2, characterized in that: The full-bridge rectifier circuit comprises: A first switch tube, wherein a first end of the first switch tube is connected to a first end of the first capacitor; a second switch tube, wherein a first end of the second switch tube is connected to a second end of the first switch tube; and a second end of the second switch tube is connected to a second end of the first capacitor; A third switch tube, a first end of the third switch tube is connected to a first end of the first capacitor; A fourth switch tube, wherein a first end of the fourth switch tube is connected to a second end of the third switch tube, and a second end of the fourth switch tube is connected to a second end of the first capacitor.

4. The wireless signal receiving device according to claim 3, characterized in that: The first compensation circuit comprises: A second capacitor, the first end of the receiving coil is connected to the first switch tube and the second switch tube through the second capacitor; the second end of the receiving coil is connected to the third switch tube and the fourth switch tube.

5. The wireless signal receiving device according to claim 2, characterized in that: The synchronous buck circuit comprises: a fifth switch tube, wherein a first end of the fifth switch tube is connected to a first end of the first capacitor; a sixth switch tube, wherein a first end of the sixth switch tube is connected to a second end of the fifth switch tube, and a second end of the sixth switch tube is connected to a second end of the first capacitor; A first inductor, wherein the first end of the battery is connected to the fifth switch tube and the sixth switch tube through the first inductor; A third capacitor, wherein a first end of the third capacitor is connected to the first end of the battery, a second end of the third capacitor is connected to the second end of the battery, and a second end of the third capacitor is grounded.

6. A wireless charging device, characterized in that: Used to send different voltages to the wireless signal receiving device according to any one of claims 1 to 5; the wireless charging device comprises: a second control component; a pulse signal transmitter, the pulse signal transmitter being connected to the second control component and configured to transmit different pulse signals according to the communication information sent by the second control component; A full-bridge inverter circuit, wherein the full-bridge inverter circuit is connected to the pulse signal transmitter, and the full-bridge inverter circuit switches between a full-bridge working mode and a half-bridge working mode according to different pulse signals emitted by the pulse signal transmitter to generate different voltages; A transmitting coil, wherein the transmitting coil is connected to the full-bridge inverter circuit and is used to send different voltages to the wireless signal receiving device.

7. The wireless charging device according to claim 6, characterized in that: Also includes: Motor; A fourth capacitor, wherein a first end of the fourth capacitor is connected to a first end of the motor, and a second end of the fourth capacitor is connected to a second end of the motor.

8. The wireless charging device according to claim 7, characterized in that: The full-bridge inverter circuit comprises: a seventh switch tube, wherein a first end of the seventh switch tube is connected to a first end of the fourth capacitor; an eighth switch tube, wherein a first end of the eighth switch tube is connected to a second end of the seventh switch tube; a second end of the eighth switch tube is connected to a second end of the fourth capacitor, and a second end of the eighth switch tube is grounded; a ninth switch tube, wherein a first end of the ninth switch tube is connected to a first end of the fourth capacitor; A tenth switch tube, wherein a first end of the tenth switch tube is connected to a second end of the ninth switch tube, and a second end of the tenth switch tube is connected to a second end of the fourth capacitor.

9. The wireless charging device according to any one of claims 6 to 8, characterized in that: Also includes: A second compensation circuit is connected in series with the transmitting coil.

10. The wireless charging device according to claim 9, characterized in that: The second compensation circuit comprises: A fifth capacitor, one end of the fifth capacitor is connected to the transmitting coil, and the other end of the fifth capacitor is connected to the full-bridge inverter circuit.

11. An autonomous mobile device, characterized in that: include: The wireless signal receiving device according to any one of claims 1 to 5; And / or, the wireless charging device as claimed in any one of claims 6 to 10.

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