CN114499590B - Wireless power carrier device - Google Patents
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- CN114499590B CN114499590B CN202111595838.6A CN202111595838A CN114499590B CN 114499590 B CN114499590 B CN 114499590B CN 202111595838 A CN202111595838 A CN 202111595838A CN 114499590 B CN114499590 B CN 114499590B
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Abstract
The invention provides a wireless power carrier device, which comprises a loose coupling coil, a power load, a voltage generating circuit, a carrier signal generating circuit, a direct current voltage generating circuit and a communication signal generating circuit, wherein the loose coupling coil comprises a primary coil and a secondary coil, the primary coil consists of a primary communication coil and a primary energy transmission coil which are connected in series, and the secondary coil consists of a secondary communication coil and a secondary energy transmission coil which are connected in series.
Description
Technical Field
The invention belongs to the technical field of wireless power carrier devices, relates to a wireless power carrier device, and particularly relates to a wireless power carrier device adopting a serial topology of a communication coil and an energy transfer coil.
Background
In the current various electromechanical systems, the electrical signals required to be interconnected and intercommunicated among various parts are of the following two types:
1) Supplying power;
2) And (4) data communication.
In the prior art, the two types of electrical signals need to be interconnected and intercommunicated through a complicated cable network in most systems, and a system designer needs to invest great effort and cost to simplify interconnection and intercommunication and improve interconnection reliability.
The invention patent 'a wireless power carrier device (ZL 201911020707.8)' proposes a method for transmitting electric energy and communication signals in the same magnetic loop by using the same magnetic medium and adopting a high-low frequency multi-carrier modulation technology, provides an effective technical approach for solving the problems, and names the technology as 'wireless power carrier technology'. However, in the method proposed in patent ZL201911020707.8, wireless transmission of electric energy and wireless transmission of communication data are implemented by using the same pair of coils, an electric energy wireless transmission signal and a communication wireless transmission signal are injected at the same position on the primary side of the coil, and the electric energy wireless transmission signal and the communication wireless transmission signal are output at the same position on the secondary side of the coil. Although the coil can be utilized to the maximum extent and the system topology structure can be simplified, the electric energy wireless transmission signal is characterized by low frequency and narrow band, and the communication data wireless transmission signal is characterized by high frequency and wide band, so that the two signals can generate strong mutual interference, especially when the voltage of wireless electric energy transmission is high (more than 500V) and the power is large (more than 5 kW), the wireless energy transmission signal can generate very large interference to the wireless communication signal, and the high communication rate (more than 10 Mbps) is difficult to achieve. Therefore, a circuit topology structure beneficial to mutual decoupling between wireless power transmission signals and wireless communication transmission signals needs to be found, so that wireless power carrier equipment has high-rate (more than 10 Mbps) wireless communication capability while wirelessly transmitting energy at high voltage (more than 500V) and high power (more than 5 kW).
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a wireless power carrier device.
The technical solution of the invention is as follows: provided is a wireless power carrier apparatus, the apparatus including:
the system comprises a loose coupling coil, a control circuit and a control circuit, wherein the loose coupling coil comprises a primary coil and a secondary coil, the primary coil consists of a primary communication coil and a primary energy transfer coil which are connected in series, and the secondary coil consists of a secondary communication coil and a secondary energy transfer coil which are connected in series;
an electricity load;
the voltage generating circuit is used for generating a sinusoidal voltage signal and outputting the sinusoidal voltage signal to the primary side energy transfer coil;
the carrier signal generating circuit is used for generating a primary carrier signal and outputting the primary carrier signal to the primary communication coil;
the input end of the direct-current voltage generating circuit is connected with the output end of the secondary side energy transfer coil, and the output end of the direct-current voltage generating circuit is connected with the electric load;
the input end of the communication signal generating circuit is connected with the output end of the secondary side communication coil;
the primary side energy transfer coil generates an energy transfer signal magnetic field according to an input sinusoidal voltage signal, the primary side communication coil generates a communication signal magnetic field according to an input primary side carrier signal, and the energy transfer signal magnetic field and the communication signal magnetic field are mutually superposed and jointly induced to a secondary side coil of the loosely coupled coil; the secondary side energy transfer coil induces a power supply energy voltage signal and transmits the power supply energy voltage signal to a direct current voltage generating circuit, and the direct current voltage generating circuit generates direct current voltage according to the power supply energy voltage signal and outputs the direct current voltage to the power load; and the secondary communication coil induces a secondary carrier signal and transmits the secondary carrier signal to a communication signal generating circuit, and the communication signal generating circuit generates and outputs a digital communication signal according to the secondary carrier signal.
Further, when the primary coil and the secondary coil are arranged, the primary communication coil is over against the secondary communication coil, and the primary energy transmission coil is over against the secondary energy transmission coil.
Further, the voltage generating circuit comprises an input power supply, a high-frequency conversion circuit and an input compensation circuit, wherein the input power supply is connected with the high-frequency conversion circuit and supplies input power to the high-frequency conversion circuit; the output end of the high-frequency conversion circuit is connected with the input compensation circuit, and the input compensation circuit compensates the high-frequency square wave voltage signal output by the high-frequency conversion circuit into a sinusoidal voltage signal; the output end of the input compensation circuit is connected with the primary side energy transmission coil, and a sinusoidal voltage signal is sent to the primary side energy transmission coil.
Further, the carrier signal generating circuit comprises an input end communication circuit, an input end modulation circuit, a power amplifier a and a decoupling filter circuit a, wherein the input end communication circuit is connected with the input end of the input end modulation circuit and transmits the digital communication signal to the input end modulation circuit; the output end of the input end modulation circuit is connected with the input end of a power amplifier a, the power amplifier a amplifies the power of a modulation signal generated by the input end modulation circuit and connects the modulated amplification signal after power amplification to the input end of a decoupling filter circuit a, and the decoupling filter circuit a generates a primary side carrier signal and sends the primary side carrier signal to a primary side communication coil.
Further, the direct-current voltage generating circuit comprises an output compensation circuit and a rectification filter circuit, wherein the output end of the secondary side energy transmission coil is connected with the input end of the output compensation circuit, and the output compensation circuit compensates harmonic components in the power supply energy voltage signal induced by the secondary side energy transmission coil to obtain a high-frequency alternating-current voltage signal; the output end of the output compensation circuit is connected with the input end of the rectification filter circuit, and the high-frequency alternating-current voltage signal is transmitted to the rectification filter circuit; the rectification filter circuit rectifies and filters the input high-frequency alternating-current voltage into direct-current voltage and provides the direct-current voltage for the electric load.
Further, the communication signal generating circuit comprises a decoupling filter circuit b, a power amplifier b, an output end demodulation circuit and an output end communication circuit, wherein the input end of the decoupling filter circuit b is connected with the output end of the secondary communication coil, receives a secondary carrier signal induced by the secondary communication coil, and decouples and filters the secondary carrier signal to obtain a signal to be demodulated; the output end of the decoupling filter circuit b is connected to the input end of the power amplifier b, and the power amplifier b performs power amplification on the signal to be demodulated to obtain an amplified signal to be demodulated; the output end of the power amplifier b is connected to the input end of the output end demodulation circuit, and the output end demodulation circuit demodulates the signal to be demodulated and amplified into a digital communication signal to be transmitted; the output end of the output end demodulation circuit is connected with the output end communication circuit, and the digital communication signal is provided for the output end communication circuit.
Further, the decoupling filter circuit a includes a decoupling circuit a and a band group filter circuit a.
Further, the decoupling filter circuit b includes a decoupling circuit b and a band group filter circuit b.
Compared with the prior art, the invention has the beneficial effects that:
firstly, after the wireless power carrier device adopting the topology that the communication coil and the energy transfer coil are connected in series is adopted, the electromagnetic induction magnetic field in the loosely coupled coil is utilized to realize the same-medium transmission of electric energy and communication signals;
secondly, the topological structures that the communication coil and the energy transfer coil are connected in series are adopted in the primary coil and the secondary coil in the loosely coupled coil, and an electric energy transmission signal and a data transmission signal enter the loosely coupled coil from different channels and are output from different positions in an induction mode, so that crosstalk of the two signals is reduced in a circuit mechanism;
thirdly, the frequency domain decoupling scheme of the invention adopts a decoupling filter circuit composed of a decoupling circuit and a band elimination filter circuit to effectively prevent crosstalk of energy transmission voltage signals to a data communication channel;
fourthly, the power amplification measure of the invention adopts the power amplifier to amplify the power of the communication signal, thereby improving the signal-to-noise ratio of the transmission signal and ensuring the correct transmission of the communication signal;
fifthly, the invention realizes high-speed wireless transmission of signals under the conditions of high voltage and high power wireless energy transmission, namely the wireless power carrier equipment has high-speed (more than 10 Mbps) wireless communication capability while wirelessly transmitting energy at high voltage (more than 500V) and high power (more than 5 kW).
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic block diagram of a wireless power carrier device using a topology of a communication coil and an energy transfer coil connected in series according to the present invention;
FIG. 2 is a schematic diagram of a decoupling filter circuit of the present invention;
FIG. 3 is a schematic block diagram of an input terminal modulation circuit of the present invention;
fig. 4 is a schematic block diagram of an output terminal demodulation circuit of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As described in the background art, the method for transmitting both electric energy and communication signals in the same magnetic loop by using the same magnetic medium and adopting the high-low frequency multi-carrier modulation technology completely completes the transmission of power supply signals and data communication signals in a wireless mode, and completely cancels interconnection lines among all components. However, the wireless transmission of the electric energy and the wireless transmission of the communication data are realized by using the same pair of coils, so that the mutual interference of two signals is difficult to avoid, and the high-speed wireless transmission of the signals under the conditions of high voltage and high power energy transmission cannot be realized.
To this end, as shown in fig. 1, in an embodiment of the present invention, a wireless power carrier device is provided, the device includes a loosely-coupled coil, an electrical load, a voltage generation circuit, a carrier signal generation circuit, a direct-current voltage generation circuit, and a communication signal generation circuit, the loosely-coupled coil includes a primary coil and a secondary coil, the primary coil is composed of a primary communication coil and a primary energy transfer coil connected in series, and the secondary coil is composed of a secondary communication coil and a secondary energy transfer coil connected in series; the voltage generating circuit is used for generating a sinusoidal voltage signal and outputting the sinusoidal voltage signal to the primary side energy transfer coil; the carrier signal generating circuit is used for generating a primary carrier signal and outputting the primary carrier signal to the primary communication coil; the input end of the direct-current voltage generating circuit is connected with the output end of the secondary side energy transfer coil, and the output end of the direct-current voltage generating circuit is connected with the electric load; the input end of the communication signal generating circuit is connected with the output end of the secondary side communication coil; the primary side energy transfer coil generates an energy transfer signal magnetic field according to an input sinusoidal voltage signal, the primary side communication coil generates a communication signal magnetic field according to an input primary side carrier signal, and the energy transfer signal magnetic field and the communication signal magnetic field are mutually superposed and jointly induced to a secondary side coil of the loosely coupled coil; the secondary side energy transfer coil induces a power supply energy voltage signal and transmits the power supply energy voltage signal to a direct current voltage generating circuit, and the direct current voltage generating circuit generates direct current voltage according to the power supply energy voltage signal and outputs the direct current voltage to the power load; and the secondary communication coil induces a secondary carrier signal and transmits the secondary carrier signal to a communication signal generating circuit, and the communication signal generating circuit generates and outputs a digital communication signal according to the secondary carrier signal.
In the embodiment of the invention, the voltage generating circuit comprises an input power supply, a high-frequency conversion circuit and an input compensation circuit, wherein the input power supply is connected with the high-frequency conversion circuit and supplies input power to the high-frequency conversion circuit; the output end of the high-frequency conversion circuit is connected with the input compensation circuit, and the input compensation circuit compensates the high-frequency square wave voltage signal output by the high-frequency conversion circuit into a sinusoidal voltage signal; the output end of the input compensation circuit is connected with the primary side energy transmission coil, and a sinusoidal voltage signal is sent to the primary side energy transmission coil.
The carrier signal generating circuit comprises an input end communication circuit, an input end modulation circuit, a power amplifier a and a decoupling filter circuit a, wherein the input end communication circuit is connected with the input end of the input end modulation circuit and transmits a digital communication signal to the input end modulation circuit; the output end of the input end modulation circuit is connected with the input end of a power amplifier a, the power amplifier a amplifies the power of a modulation signal generated by the input end modulation circuit and connects the modulated amplification signal after power amplification to the input end of a decoupling filter circuit a, and the decoupling filter circuit a generates a primary side carrier signal and sends the primary side carrier signal to a primary side communication coil.
The direct-current voltage generating circuit comprises an output compensation circuit and a rectifying and filtering circuit, wherein the output end of the secondary side energy transmission coil is connected with the input end of the output compensation circuit, and the output compensation circuit compensates harmonic components in the power supply energy voltage signal induced by the secondary side energy transmission coil to obtain a high-frequency alternating-current voltage signal; the output end of the output compensation circuit is connected with the input end of the rectification filter circuit, and the high-frequency alternating-current voltage signal is transmitted to the rectification filter circuit; the rectification filter circuit rectifies and filters the input high-frequency alternating voltage into direct-current voltage and provides the direct-current voltage for the electric load.
The communication signal generating circuit comprises a decoupling filter circuit b, a power amplifier b, an output end demodulation circuit and an output end communication circuit, wherein the input end of the decoupling filter circuit b is connected with the output end of the secondary communication coil, receives a secondary carrier signal induced by the secondary communication coil, and decouples and filters the secondary carrier signal to obtain a signal to be demodulated; the output end of the decoupling filter circuit b is connected to the input end of the power amplifier b, and the power amplifier b performs power amplification on the signal to be demodulated to obtain an amplified signal to be demodulated; the output end of the power amplifier b is connected to the input end of the output end demodulation circuit, and the output end demodulation circuit demodulates the signal to be demodulated and amplified into a digital communication signal to be transmitted; the output end of the output end demodulation circuit is connected with the output end communication circuit, and the digital communication signal is provided for the output end communication circuit.
In the embodiment of the invention, the loose coupling coil is divided into a primary coil and a secondary coil, the primary coil and the secondary coil can be completely separated, the primary coil is led out a wire outlet point 2 at the middle position except for lead-out wire points 1 and 3 at two ends, the coil between the 1 point and the 2 point is taken as a primary energy transfer coil, and the coil between the 2 point and the 3 point is taken as a primary communication coil; in the secondary coil, in addition to the lead-out points "4 point" and "6 point" at both ends, a lead-out point "5 point" is also led out at the intermediate position, the coil between "4 point" and "5 point" is defined as a secondary energy transfer coil, and the coil between "5 point" and "6 point" is defined as a secondary communication coil.
Therefore, the outgoing lines are respectively extracted from the middle of the primary coil and the secondary coil of the transmission coil, the primary coil and the secondary coil of the transmission coil are respectively divided into two sections of coils which are connected in series, and the two sections of coils are respectively used for transmitting electric energy signals and communication data. The electric energy wireless transmission signal and the communication wireless transmission signal are injected into different positions of the primary side of the coil, and the electric energy wireless transmission signal and the communication wireless transmission signal are output at different positions of the secondary side of the coil, so that the interference between the energy transmission signal and the communication signal is reduced from the circuit level, and on the basis, a frequency domain decoupling scheme, a power amplification measure and a physical link decoupling scheme are supplemented, and finally, the wireless power carrier equipment can realize high-voltage (more than 500V) and high-power (more than 5 kW) wireless energy transmission and has high-speed (more than 10 Mbps) wireless communication capacity.
Specifically, the method comprises the following steps:
the schematic block diagram of the wireless power carrier device adopting the serial topology of the communication coil and the energy transfer coil is shown in fig. 1, and a wireless power carrier device comprises 1 input power supply, a high-frequency conversion circuit, 1 input compensation circuit, 1 input end communication circuit, 1 input end modulation circuit, 1 power amplifier a, 1 decoupling filter circuit a, 1 loose coupling coil, 1 output compensation circuit, 1 rectification filter circuit, 1 power load, 1 decoupling filter circuit b, 1 power amplifier b, 1 output end demodulation circuit and 1 output end communication circuit.
The loose coupling coil is divided into a primary coil and a secondary coil, the primary coil and the secondary coil can be completely separated from a physical structure, the primary coil is provided with a wire outgoing point 2 at the middle position except for the outgoing line points 1 and 3 at the two ends, the coil between the 1 point and the 2 point is defined as a primary energy transfer coil, and the coil between the 2 point and the 3 point is defined as a primary communication coil; in addition to the leading-out line points "4 point" and "6 point" at the two ends of the secondary coil, a leading-out line point "5 point" is also led out at the middle position, the coil between the "4 point" and the "5 point" is taken as a secondary energy transfer coil, the coil between the "5 point" and the "6 point" is taken as a secondary communication coil, and the important characteristics of the invention can be seen from the topological structure of the loosely coupled coil: the primary coil and the secondary coil are both formed by connecting the communication coil and the energy transmission coil in series. When the coil is wound, the primary side communication coil and the primary side energy transmission coil are wound into a whole to form a primary side coil together; the secondary communication coil and the secondary energy transmission coil are wound into a whole to jointly form the secondary coil, so that the primary coil and the secondary coil are still integrated in appearance. In practical application, when the primary coil and the secondary coil are arranged, the primary communication coil is ensured to be over against the secondary communication coil as far as possible, and the primary energy transmission coil is over against the secondary energy transmission coil.
As shown in fig. 1, an input power source is connected to the high frequency conversion circuit to provide input power to the high frequency conversion circuit. The output of the high-frequency conversion circuit is connected with an input compensation circuit, and the input compensation circuit compensates the high-frequency square wave voltage signal output by the high-frequency conversion circuit into a sinusoidal voltage signal. The output of the input compensation circuit is connected with a primary energy transfer coil (a coil between a point 1 and a point 2) in the primary coil of the loosely coupled coil, and a sinusoidal voltage signal is sent to the primary energy transfer coil of the loosely coupled coil. And on the other side, the input end communication circuit is connected with the input end of the input end modulation circuit and transmits the digital communication signal to the input end modulation circuit. The output end of the input end modulation circuit is connected with the input end of a power amplifier a, after the power of a modulation signal generated by the input end modulation circuit is amplified by the power amplifier a, the modulated amplification signal after power amplification is connected to the input end of a decoupling filter circuit a, and the decoupling filter circuit a generates a primary side carrier signal and sends the primary side carrier signal to a primary side communication coil (a coil between '2 points' and '3 points') in a primary side coil of a loosely coupled coil. The primary side energy transfer coil generates an energy transfer signal magnetic field, the primary side communication coil generates a communication signal magnetic field, and the energy transfer signal magnetic field and the communication signal magnetic field are mutually overlapped in the space in the loosely coupled coil.
As shown in fig. 1, the induced magnetic field in the loosely coupled coil contains two components, one of which is a component of the magnetic field of the energy transfer signal generated by the primary energy transfer coil, and the central frequency point is about 100 kHz; the other part is a magnetic field component of the communication signal generated by the primary communication coil, and the central frequency point is about 100 MHz-1 GHz. Under the coupling action of the magnetic field of the loosely coupled coil, an induced voltage signal mainly comprising a power supply energy voltage signal is induced on the secondary side energy transfer coil (a coil between a point 4 and a point 5); an induced voltage signal mainly comprising a carrier signal is induced on the secondary communication coil (the coil between the point 5 and the point 6).
The output end of the secondary side energy transfer coil of the loosely coupled coil is connected with the input end of the output compensation circuit, and the output compensation circuit compensates harmonic components in the power supply energy voltage signal induced by the secondary side energy transfer coil. The output end of the output compensation circuit is connected with the input end of the rectification filter circuit, and the high-frequency alternating current voltage signal output by the output compensation circuit is transmitted to the rectification filter circuit. The rectification filter circuit rectifies and filters the input high-frequency alternating voltage into direct-current voltage, and provides the direct-current voltage for the electric load. And on the other side, the input end of the decoupling filter circuit b is connected with the output end of a secondary communication coil of the loose coupling coil, receives a secondary carrier signal induced by the secondary communication coil, and decouples and filters the secondary carrier signal to obtain a signal to be demodulated. The output end of the decoupling filter circuit b is connected to the input end of the power amplifier b, and the power amplifier b performs power amplification on the signal to be demodulated to obtain the signal to be demodulated and amplified. The output end of the power amplifier b is connected to the input end of the output end demodulation circuit, and the output end demodulation circuit demodulates the amplified signal to be demodulated into a digital communication signal to be transmitted. The output end of the output end demodulation circuit is connected with the output end communication circuit, and the digital communication signal is provided for the output end communication circuit.
With the topology shown in fig. 1, the transmission of electrical energy and communication signals is achieved wirelessly at the loosely coupled coils, respectively.
Fig. 2 is a schematic diagram of a decoupling filter circuit, wherein the decoupling filter circuit a and the decoupling filter circuit b have similar circuit structures, and each of the decoupling filter circuit a and the decoupling filter circuit b internally comprises a decoupling circuit and a band-elimination filter circuit, the decoupling circuit is used for removing power supply energy voltage signals which are coupled through a loosely-coupled coil inner circuit and a magnetic circuit, and the band-elimination filter circuit is used for filtering residual components of the power supply energy voltage signals which cannot be completely removed by the decoupling circuit. Therefore, the decoupling filter circuit a has the function of ensuring that the signal of the wireless electric energy transmission channel does not interfere with the circuit work of the communication signal sending side; the decoupling filter circuit b is used for removing low-frequency components (power supply energy voltage signal components) in carrier signals induced by the secondary communication coil, and signals output by the decoupling filter circuit b are guaranteed to be data communication related signals. Table 1 shows typical circuit parameter values of the decoupling filter circuit given in this embodiment, and the frequency domain decoupling scheme provided by the decoupling filter circuit prevents low-frequency (about 100kHz of the center frequency) energy transmission voltage signals from crosstalk to the data communication circuit at the transmitting end and the receiving end, thereby ensuring low error rate transmission of high-frequency communication signals (about 100MHz to 1GHz of the center frequency).
TABLE 1 typical circuit parameter values for decoupling filter circuits
| Serial number | (Code) | Parameter value |
| 1 | C 1 | 2nF |
| 2 | L 1 | 33.88μH |
| 3 | C 2 | 102nF |
| 4 | C 3 | 2nF |
| 5 | L 2 | 33.88μH |
| 6 | C 4 | 102nF |
Fig. 3 is a schematic block diagram of an input end modulation circuit, where the input end modulation circuit includes 1 "channel error correction coding" module, 1 "interleaving" module, 1 "64QAM modulation" module, 1 "serial-to-parallel conversion" module, 1 "inverse fast fourier transform" module, 1 "cyclic prefix adding" module, 1 "pilot frequency inserting" module, 1 "parallel-to-serial conversion" module, 1 "windowing" module, and 1 "preamble training symbol adding" module, and after a digital communication signal enters the input end modulation circuit, the digital communication signal sequentially passes through the signal processing of the "channel error correction coding" module, interleaving "module," 64 "QAM modulation" module, "serial-to-parallel conversion" module, "inverse fast fourier transform" module, "cyclic prefix adding" module, "pilot frequency inserting" module, "serial-to-parallel conversion" module, "windowing" module, and preamble training symbol adding "module, and completes the modulation work to obtain a" modulation signal ".
Fig. 4 is a schematic block diagram of an output-end demodulation circuit, where the output-end demodulation circuit includes 1 "interference cancellation" module, 1 "synchronization" module, 1 "serial-to-parallel conversion" module, 1 "cyclic prefix removal" module, 1 "fast fourier transform" module, 1 "pilot separation" module, 1 "channel estimation" module, 1 "64QAM demodulation" module, 1 "parallel-to-serial conversion" module, 1 "de-interleaving" module, 1 "channel error correction decoding" module, and signal processing that sequentially passes through the "interference cancellation" module, "synchronization" module, "serial-to-parallel conversion" module, "cyclic prefix removal" module, "fast fourier transform" module, "pilot separation" module, "channel estimation" module, "64QAM demodulation" module, "parallel-to-serial conversion" module, "de-interleaving" module, and "channel error correction decoding" module after the signal enters the output-end demodulation circuit, completes demodulation work, and restores a "digital communication signal" sent by the input-end communication circuit.
The input end modulation circuit shown in fig. 3 and the output end demodulation circuit shown in fig. 4 are combined to form a complete physical link, and an Orthogonal Frequency Division Multiplexing (OFDM) -based modulation/demodulation scheme is adopted, and table 2 shows a parameter list of the OFDM modulation/demodulation scheme adopted in the embodiment.
Table 2 OFDM design parameter list
In addition, in the present embodiment, on the data communication wireless transmission channel, the power amplifiers are used at both the transmitting side and the receiving side to enhance the power of the data transmission signal, improve the signal-to-noise ratio of the whole transmission, and can meet the correctness of data transmission under the conditions of increasing the energy transmission voltage and increasing the energy transmission power, so as to achieve a communication rate of more than 10 Mbps.
After the wireless power carrier device adopting the topology that the communication coil and the energy transmission coil are connected in series is adopted, the electromagnetic induction magnetic field in the loose coupling coil is utilized to realize the transmission of the electric energy and the communication signal in the same medium. The primary coil and the secondary coil of the loosely coupled coil are both formed by connecting the communication coil and the energy transfer coil in series. When the coil is wound, the primary side communication coil and the primary side energy transmission coil are wound into a whole to form a primary side coil together; the secondary communication coil and the secondary energy transmission coil are wound into a whole to jointly form the secondary coil, so that the primary coil and the secondary coil are still integrated respectively in appearance. In practical application, when the primary coil and the secondary coil are arranged, the primary communication coil is ensured to be over against the secondary communication coil, and the primary energy transmission coil is over against the secondary energy transmission coil.
In addition, firstly, the topological structure that the communication coil and the energy transfer coil are connected in series is adopted in the primary coil and the secondary coil in the loose coupling coil, electric energy transmission signals and data transmission signals enter the loose coupling coil from different channels and are output from different positions in an induction mode, and therefore crosstalk of the two signals is reduced in terms of circuit mechanism; secondly, the frequency domain decoupling scheme adopts a decoupling filter circuit consisting of a decoupling circuit and a band-stop filter circuit to effectively prevent crosstalk of energy-transmitting voltage signals to a data communication channel; thirdly, the power amplification measures of the invention adopt the power amplifier to amplify the power of the communication signal, thereby improving the signal-to-noise ratio of the transmission signal and ensuring the correct transmission of the communication signal; fourthly, the invention adopts a physical link decoupling scheme, and adopts a modulation/demodulation scheme based on Orthogonal Frequency Division Multiplexing (OFDM), thereby ensuring the low error rate of signal transmission from the physical link level. After the measures are taken, the wireless power carrier equipment can wirelessly transmit energy at high voltage (more than 500V) and high power (more than 5 kW), and has wireless communication capacity at high rate (more than 10 Mbps).
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A wireless power carrier apparatus, the apparatus comprising:
the system comprises a loose coupling coil, a control circuit and a control circuit, wherein the loose coupling coil comprises a primary coil and a secondary coil, the primary coil consists of a primary communication coil and a primary energy transfer coil which are connected in series, and the secondary coil consists of a secondary communication coil and a secondary energy transfer coil which are connected in series;
an electricity load;
the voltage generating circuit is used for generating a sinusoidal voltage signal and outputting the sinusoidal voltage signal to the primary side energy transfer coil;
the carrier signal generating circuit is used for generating a primary carrier signal and outputting the primary carrier signal to the primary communication coil;
the input end of the direct-current voltage generating circuit is connected with the output end of the secondary side energy transfer coil, and the output end of the direct-current voltage generating circuit is connected with the electric load;
the input end of the communication signal generating circuit is connected with the output end of the secondary side communication coil;
the primary side energy transfer coil generates an energy transfer signal magnetic field according to an input sinusoidal voltage signal, the primary side communication coil generates a communication signal magnetic field according to an input primary side carrier signal, and the energy transfer signal magnetic field and the communication signal magnetic field are mutually superposed and jointly induced to a secondary side coil of the loosely coupled coil; the secondary side energy transfer coil induces a power supply energy voltage signal and transmits the power supply energy voltage signal to a direct current voltage generating circuit, and the direct current voltage generating circuit generates direct current voltage according to the power supply energy voltage signal and outputs the direct current voltage to the power load; and the secondary communication coil induces a secondary carrier signal and transmits the secondary carrier signal to a communication signal generating circuit, and the communication signal generating circuit generates and outputs a digital communication signal according to the secondary carrier signal.
2. The wireless power carrier device of claim 1, wherein the primary communication coil is aligned with the secondary communication coil and the primary energy transfer coil is aligned with the secondary energy transfer coil when the primary coil and the secondary coil are arranged.
3. The wireless power carrier apparatus according to claim 1 or 2, wherein the voltage generating circuit comprises an input power supply, a high frequency converting circuit, and an input compensating circuit, wherein the input power supply is connected to the high frequency converting circuit to supply input power to the high frequency converting circuit; the output end of the high-frequency conversion circuit is connected with the input compensation circuit, and the input compensation circuit compensates the high-frequency square wave voltage signal output by the high-frequency conversion circuit into a sinusoidal voltage signal; the output end of the input compensation circuit is connected with the primary side energy transmission coil, and a sinusoidal voltage signal is sent to the primary side energy transmission coil.
4. The wireless power carrier device according to claim 3, wherein the carrier signal generating circuit comprises an input communication circuit, an input modulation circuit, a power amplifier a and a decoupling filter circuit a, wherein the input communication circuit is connected with the input of the input modulation circuit and transmits the digital communication signal to the input modulation circuit; the output end of the input end modulation circuit is connected with the input end of a power amplifier a, the power amplifier a amplifies the power of a modulation signal generated by the input end modulation circuit and connects the modulated amplification signal after power amplification to the input end of a decoupling filter circuit a, and the decoupling filter circuit a generates a primary side carrier signal and sends the primary side carrier signal to a primary side communication coil.
5. The wireless power carrier device according to claim 4, wherein the dc voltage generating circuit comprises an output compensating circuit and a rectifying and filtering circuit, wherein the output terminal of the secondary side energy-transmitting coil is connected to the input terminal of the output compensating circuit, and the output compensating circuit compensates for harmonic components in the supply energy voltage signal induced by the secondary side energy-transmitting coil to obtain a high-frequency ac voltage signal; the output end of the output compensation circuit is connected with the input end of the rectification filter circuit, and the high-frequency alternating-current voltage signal is transmitted to the rectification filter circuit; the rectification filter circuit rectifies and filters the input high-frequency alternating voltage into direct-current voltage and provides the direct-current voltage for the electric load.
6. The wireless power carrier device according to claim 5, wherein the communication signal generation circuit comprises a decoupling filter circuit b, a power amplifier b, an output terminal demodulation circuit and an output terminal communication circuit, wherein an input terminal of the decoupling filter circuit b is connected with an output terminal of the secondary communication coil, receives a secondary carrier signal induced by the secondary communication coil, and decouples and filters the secondary carrier signal to obtain a signal to be demodulated; the output end of the decoupling filter circuit b is connected to the input end of the power amplifier b, and the power amplifier b performs power amplification on the signal to be demodulated to obtain an amplified signal to be demodulated; the output end of the power amplifier b is connected to the input end of the output end demodulation circuit, and the output end demodulation circuit demodulates the signal to be demodulated and amplified into a digital communication signal to be transmitted; the output end of the output end demodulation circuit is connected with the output end communication circuit, and the digital communication signal is provided for the output end communication circuit.
7. The wireless power carrier device according to any one of claims 1 to 6, wherein the decoupling filter circuit a comprises a decoupling circuit a and a band group filter circuit a.
8. The wireless power carrier device of claim 7, wherein the decoupling filter circuit b comprises a decoupling circuit b and a band group filter circuit b.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104604074A (en) * | 2012-09-11 | 2015-05-06 | 高通股份有限公司 | Wireless power transfer system coil arrangements and method of operation |
| CN105846684A (en) * | 2016-03-23 | 2016-08-10 | 中国矿业大学 | Noncontact electric energy and signal synchronous transmission system and control method thereof |
| CN107069988A (en) * | 2017-06-19 | 2017-08-18 | 哈尔滨工业大学 | A kind of wireless energy and data synchronous transmission system and its parameter acquiring method |
| CN110798247A (en) * | 2019-10-25 | 2020-02-14 | 北京机电工程研究所 | Wireless power carrier equipment |
| CN113315252A (en) * | 2021-06-17 | 2021-08-27 | 深圳市小孔技术有限公司 | Device for realizing synchronous wireless power supply and wireless communication and coil winding |
| WO2021232523A1 (en) * | 2020-05-21 | 2021-11-25 | 深圳市知用电子有限公司 | Isolated signal transmission apparatus |
-
2021
- 2021-12-23 CN CN202111595838.6A patent/CN114499590B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104604074A (en) * | 2012-09-11 | 2015-05-06 | 高通股份有限公司 | Wireless power transfer system coil arrangements and method of operation |
| CN105846684A (en) * | 2016-03-23 | 2016-08-10 | 中国矿业大学 | Noncontact electric energy and signal synchronous transmission system and control method thereof |
| CN107069988A (en) * | 2017-06-19 | 2017-08-18 | 哈尔滨工业大学 | A kind of wireless energy and data synchronous transmission system and its parameter acquiring method |
| CN110798247A (en) * | 2019-10-25 | 2020-02-14 | 北京机电工程研究所 | Wireless power carrier equipment |
| WO2021232523A1 (en) * | 2020-05-21 | 2021-11-25 | 深圳市知用电子有限公司 | Isolated signal transmission apparatus |
| CN113315252A (en) * | 2021-06-17 | 2021-08-27 | 深圳市小孔技术有限公司 | Device for realizing synchronous wireless power supply and wireless communication and coil winding |
Non-Patent Citations (1)
| Title |
|---|
| 基于无线电力载波的kW级非接触能量数据传输系统研究与设计;谢孟、马红波等;《电工技术》;20210710;第1-3节 * |
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