CN212162935U - Wireless energy absorption system - Google Patents
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- CN212162935U CN212162935U CN202021045103.7U CN202021045103U CN212162935U CN 212162935 U CN212162935 U CN 212162935U CN 202021045103 U CN202021045103 U CN 202021045103U CN 212162935 U CN212162935 U CN 212162935U
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Abstract
The embodiment of the utility model discloses wireless energy absorption system, include: the antenna array covers at least one frequency band, is used for coupling the radio frequency energy in the space and outputs the coupled energy; the energy matching module is electrically connected with the antenna array; the power supply conversion module is electrically connected with the energy matching module; the energy storage module is electrically connected with the power conversion module and used for receiving electric energy and storing the electric energy; and the digital processing module is respectively and electrically connected with the antenna array and the energy matching module and is used for adjusting the frequency band of the antenna array for receiving the radio frequency energy and the matching impedance of the energy matching module. The embodiment of the utility model provides a wireless energy absorption system, through the intelligent control of digital processing module to antenna array and energy matching module, make energy transmission maximize, realize the intelligent and high-efficient of radio frequency energy absorption.
Description
Technical Field
The embodiment of the utility model provides a relate to communication technology, especially relate to a wireless energy absorption system.
Background
In various fields of production and life, devices with various functions execute respective functions in application, and a power supply is required to supply power when a plurality of devices work, for example, a battery power supply mode is adopted.
At present, many existing small-sized or miniature devices, especially portable or remote electrical devices, are powered by batteries, but the batteries need to be charged or replaced periodically, and many devices cannot or cannot be replaced easily in a charging mode or a manual replacement mode in specific application scenes. However, the method has its feasibility, but for many micro-devices, the method cannot be used normally in places with limited volume or limited regions.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a wireless energy absorption system matches the intelligent control of module through digital processing module to antenna array and energy, makes energy transmission maximize, realizes the intelligent and high-efficient of radio frequency energy absorption.
An embodiment of the utility model provides a wireless energy absorption system, include:
the antenna array covers at least one frequency band, is used for coupling the radio frequency energy in the space and outputs the coupled energy;
the energy matching module is electrically connected with the antenna array and used for performing impedance matching on the coupling energy;
the power supply conversion module is electrically connected with the energy matching module and used for receiving the coupling energy and converting the coupling energy to obtain stable electric energy;
the energy storage module is electrically connected with the power conversion module and used for receiving electric energy and storing the electric energy;
and the digital processing module is respectively and electrically connected with the antenna array and the energy matching module and is used for adjusting the frequency band of the antenna array for receiving the radio frequency energy and the matching impedance of the energy matching module.
Optionally, the energy matching module includes a variable capacitance matching unit and an energy detection unit, and the variable capacitance matching unit and the energy detection unit are respectively electrically connected to the digital processing module;
the energy detection unit is used for detecting the coupling energy; the digital processing module is specifically configured to: and adjusting the capacitance of the variable capacitance matching unit and the frequency band of the antenna array for receiving the radio frequency energy according to the coupling energy so as to maximize the coupling energy.
Optionally, the variable capacitance matching unit comprises a plurality of switched capacitors, or at least one voltage-controlled variable capacitor, or a combination of switched capacitors and voltage-controlled variable capacitors, the switched capacitors and/or the voltage-controlled variable capacitors being electrically connected to the digital processing module.
Optionally, the digital processing module is further electrically connected to the power conversion module, and is configured to control the power conversion module to rectify and/or transform the coupling energy according to the magnitude of the coupling energy.
Optionally, the power conversion module includes at least one of a CMOS, a rectifying diode, a buck-boost switching power circuit, and a charge pump.
Optionally, the power conversion module includes a rectifier diode, a buck-boost switching power circuit, and a bypass switch;
the input end of the rectifier diode is electrically connected with the output end of the energy matching circuit, the output end of the rectifier diode is electrically connected with the first end of the bypass switch and the input end of the buck-boost switching power supply circuit, the second end of the bypass switch and the output end of the buck-boost switching power supply circuit are electrically connected with the input end of the energy storage module, and the control end of the buck-boost switching power supply circuit and the control end of the bypass switch are electrically connected with the digital processing module.
Optionally, the digital processing module is further electrically connected to the energy storage module, and is configured to adjust an electric energy storage amount of the energy storage module.
Optionally, the energy storage module includes a plurality of switch storage units connected in parallel, and each switch storage unit is electrically connected to the digital processing module.
Optionally, the output end of the energy storage module is electrically connected to the digital processing module, and is used for supplying power to the digital processing module.
Optionally, the antenna array covers a Sub-6GHz mainstream frequency band, and the Sub-6GHz mainstream frequency band at least includes 0.7GHz, 0.9GHz, 1.8GHz, 2.1GHz, 2.6GHz, 3.6GHz, and 4.8 GHz.
The embodiment of the utility model provides a wireless energy absorption system, including the antenna array, energy matching module, power conversion module and digital processing module, the antenna array covers at least one frequency channel, radio frequency energy to in the space couples, and output coupling energy, energy matching module is connected with the antenna array electricity, carry out impedance matching to coupling energy, power conversion module is connected with energy matching module electricity, receive coupling energy, and convert coupling energy and obtain stable electric energy, energy storage module is connected with power conversion module electricity, receive the electric energy and save the electric energy, digital processing module is connected with antenna array and energy matching module electricity respectively, adjust the matching impedance of antenna array receiving radio frequency energy frequency channel and energy matching module. The embodiment of the utility model provides a wireless energy absorption system, through the intelligent control of digital processing module to antenna array and energy matching module, adjust the frequency channel of antenna array and the electric capacity of energy matching module, make energy transmission maximize, realize radio frequency energy absorption's intellectuality and high efficiency.
Drawings
Fig. 1 is a block diagram of a wireless energy absorption system according to an embodiment of the present invention;
fig. 2 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention;
fig. 3 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention;
fig. 4 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention;
fig. 5 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention;
fig. 6 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Based on that the battery of the existing micro equipment cannot be replaced or is not easy to replace in a charging mode or a manual replacement mode in a specific application scene, and the energy is given by adopting a solar energy, heat energy or mechanical vibration mode, and the micro equipment cannot be normally used in a place with limited equipment volume or limited region. Exemplarily, referring to fig. 1, fig. 1 is a block diagram of a wireless energy absorption system according to an embodiment of the present invention, where the wireless energy absorption system includes: the antenna array 10, the energy matching module 20, the power conversion module 30, the energy storage module 40 and the digital processing module 50;
the antenna array 10 covers at least one frequency band, and is configured to couple radio frequency energy in space and output coupled energy;
the energy matching module 20 is electrically connected with the antenna array 10 and is used for performing impedance matching on the coupled energy;
the power conversion module 30 is electrically connected with the energy matching module 20, and is configured to receive coupling energy and convert the coupling energy to obtain stable electric energy;
the energy storage module 40 is electrically connected with the power conversion module 30 and is used for receiving electric energy and storing the electric energy;
the digital processing module 50 is electrically connected to the antenna array 10 and the energy matching module 20, respectively, and is configured to adjust a frequency band of the antenna array 10 receiving the radio frequency energy and a matching impedance of the energy matching module 20.
Specifically, the antenna array 10 couples the radio frequency energy in the space and outputs the coupled energy to the energy matching module 20, the energy matching module 20 receives the coupled energy and performs impedance matching on the coupled energy, the digital processing module 50 adjusts the matching impedance of the energy matching module 20 according to the magnitude of the coupled energy and adjusts the frequency band of the antenna array 10 receiving the radio frequency energy, so as to implement impedance matching on the coupled energy, and maximize the transmitted coupled energy. Illustratively, the digital processing module 50 adjusts the energy matching module 20 to a matching impedance, and under the matching impedance, the digital processing module 50 adjusts each frequency band of the antenna array 10 one by one, and when the magnitude of the coupling energy in a certain frequency band reaches or exceeds a predetermined value, the matching impedance of the energy matching module 20 and the frequency band (fixed to the certain frequency band) of the radio frequency energy received by the antenna array 10 are fixed, and at this time, the impedance matching of the energy matching module 20 to the coupling energy can be realized, so that the transmission of the coupling energy is maximized. When the digital processing module 50 adjusts the energy matching module 20 to a matching impedance, under the matching impedance, if the frequency band of the antenna array 10 receiving the radio frequency energy is adjusted to any frequency band covered by the antenna array, and the magnitude of the coupling energy is lower than an expected set value, the digital processing module 50 adjusts the energy matching module 20 to another matching impedance, and then adjusts each frequency band of the antenna array 10 one by one, so that the transmission of the coupling energy is maximized by adjusting the matching impedance of the energy matching module 20 and the frequency band of the antenna array 10 receiving the radio frequency energy until the magnitude of the coupling energy reaches the expected set value. Then, the power conversion module 30 receives the coupling energy after impedance matching, converts the coupling energy after impedance matching to obtain stable electric energy, and outputs the electric energy to the energy storage module 40, and the energy storage module 40 receives the electric energy and stores the electric energy.
The wireless energy absorption system provided by this embodiment includes an antenna array, an energy matching module, a power conversion module, and a digital processing module, where the antenna array covers at least one frequency band, couples radio frequency energy in a space, and outputs the coupled energy, the energy matching module is electrically connected to the antenna array, and performs impedance matching on the coupled energy, the power conversion module is electrically connected to the energy matching module, receives the coupled energy, and converts the coupled energy to obtain stable electric energy, the energy storage module is electrically connected to the power conversion module, receives the electric energy, and stores the electric energy, and the digital processing module is electrically connected to the antenna array and the energy matching module, respectively, and adjusts the frequency band where the antenna array receives the radio frequency energy and the matching impedance of the energy matching module. The wireless energy absorption system provided in this embodiment adjusts the frequency band of the antenna array and the capacitance of the energy matching module by intelligently controlling the antenna array and the energy matching module through the digital processing module, so that energy transmission is maximized, and the intelligence and high efficiency of radio frequency energy absorption are realized.
In the above embodiment, the digital processing module 50 may be a micro storage control unit such as an MCU, a DSP, or a digital FPGA.
Fig. 2 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention, and on the basis of the above technical solution, optionally, referring to fig. 2, the energy matching module 20 includes a variable capacitance matching unit 21 and an energy detection unit 22, and the variable capacitance matching unit 21 and the energy detection unit 22 are electrically connected to the digital processing module 50 respectively;
the energy detection unit 22 is used for detecting the coupling energy; the digital processing module 50 is specifically configured to: according to the amount of the coupled energy, the capacitance of the variable capacitance matching unit 21 and the frequency band of the rf energy received by the antenna array 10 are adjusted to maximize the coupled energy.
Optionally, the variable capacitance matching unit 21 includes a plurality of switched capacitors, or at least one voltage-controlled variable capacitor, or a combination of switched capacitors and voltage-controlled variable capacitors, the switched capacitors and/or the voltage-controlled variable capacitors being electrically connected with the digital processing module 50.
For example, the switched capacitor or the voltage-controlled variable capacitor in the variable-capacitance matching unit 21 may include a plurality of capacitors, and the digital processing module 50 may control the power-on and power-off states of the line on which the capacitors in the switched capacitor or the voltage-controlled variable capacitor are located, that is, the number of capacitors in the operating state, according to the magnitude of the coupling energy detected by the energy detection unit 22, so as to adjust the capacitance of the variable-capacitance matching unit 21. For example, for the switch capacitors, the digital processing module 50 may control the on/off state of the line switch where each capacitor in the switch capacitors is located to adjust the capacitance of the switch capacitors by controlling the on/off state of the line where the capacitors are located, and control the frequency band of the antenna array 10 receiving the radio frequency energy to maximize the coupling energy.
Optionally, the variable capacitance matching unit 21 includes an inductor L, a capacitor C1, and a capacitor C2.
Exemplarily, the variable capacitance matching unit 21 may be a variable capacitance unit composed of fixed capacitors, or may be a switched capacitance matching circuit unit composed of voltage-controlled variable capacitors, two parallel capacitors are illustrated in fig. 2, the capacitor C1 and the capacitor C2 may be switched capacitors or voltage-controlled capacitors, the variable capacitance matching unit 21 may include multiple parallel switched capacitors or multiple parallel voltage-controlled capacitors, fig. 2 is merely an illustration, and the selection of the capacitance type and the specific requirement of several parallel capacitors are determined according to actual situations, and are not limited herein.
Optionally, the digital processing module 50 is further electrically connected to the power conversion module 30, and is configured to control the power conversion module 30 to rectify and/or transform the coupling energy according to the magnitude of the coupling energy.
For example, the digital processing module 50 may control the power conversion module 30 to rectify and/or transform the coupled energy according to the magnitude of the coupled energy, so that the power conversion module 30 outputs a stable voltage and current to the energy storage module 40, and the conversion efficiency of the power conversion module 30 to the coupled energy is maximized.
Optionally, the power conversion module 30 includes at least one of a CMOS, a rectifying diode, a buck-boost switching power circuit, and a charge pump.
For example, the rectifier diode, the buck-boost switching power circuit, and the charge pump may all be made of GaN material, for example, the rectifier diode may be a GaN diode, and the power conversion module 30 may operate in various forms, for example, a single GaN diode may be used as a shaping circuit, so as to shape the coupling energy and transmit the coupling energy to the energy storage unit; or a buck-boost switching power supply circuit and a GaN diode are adopted to convert the shaped voltage and current into constant voltage and constant current which are fixedly output; or a charge pump is adopted as an energy conversion module to convert energy.
Fig. 3 is a structural block diagram of another wireless energy absorption system provided by the embodiment of the present invention, on the basis of the above technical solution, optionally, referring to fig. 3, the power conversion module 30 includes the charge pump 34, the main feature of the charge pump 34 can control its multiplication relationship on the voltage by controlling the energy flowing in through the switch, the digital processing module 50 controls the difference of the capacitance ratio inside the charge pump 34 to realize the high voltage conversion capability, so that the high voltage charging conversion is realized through the charge pump 34, the energy conversion efficiency of the general charge pump 34 is higher, and therefore the purpose of high efficiency conversion can be realized. The power conversion module 30 may also be various combinations of various circuits to form an energy conversion circuit, so that the power conversion module 30 achieves maximum efficiency conversion under the control of the digital processing module 50.
Fig. 4 is a block diagram of another wireless energy absorption system provided in an embodiment of the present invention, and on the basis of the above technical solution, optionally, referring to fig. 4, the power conversion module 30 includes a rectifier diode 31 and a buck-boost switching power circuit 32;
the input end a1 of the rectifier diode 31 is electrically connected with the output end a2 of the energy matching circuit 20, the output end B1 of the rectifier diode 31 is electrically connected with the input end B3 of the buck-boost switching power supply circuit 32, the second end G1 of the bypass switch 33 and the output end G2 of the buck-boost switching power supply circuit 32 are electrically connected with the input end G3 of the energy storage module 40, and the control end D1 of the buck-boost switching power supply circuit 32 is electrically connected with the digital processing module 50.
Illustratively, the rectifier diode 31 may be a GaN diode, the buck-boost switching power circuit 32 may be a GaN buck-boost switching power circuit, the voltage and the current of the coupling energy output by the energy matching circuit 20 through the output terminal a2 are rectified by the rectifier diode 31 and then output to the buck-boost switching power circuit 32, the digital processing module 50 outputs a boost or buck control signal to the buck-boost switching power circuit 32, the buck-boost switching power circuit 32 performs boost or buck processing on the voltage output by the rectifier diode 31 to obtain a constant voltage, and the constant voltage is output to the energy storage module 40 through the output terminal G2. The control signal is adjusted by the digital processing module 50, and the magnitude of the constant voltage obtained by the buck-boost switching power supply circuit 32 is adjusted, so that the power conversion module 30 realizes efficiency conversion maximization under the control of the digital processing module 50.
Fig. 5 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention, and referring to fig. 5, optionally, a power conversion module 30 includes a rectifier diode 31, a buck-boost switching power circuit 32, and a bypass switch 33;
an input end A1 of the rectifier diode 31 is electrically connected with an output end A2 of the energy matching circuit 20, an output end B1 of the rectifier diode 31 is electrically connected with a first end B2 of the bypass switch 33 and an input end B3 of the buck-boost switching power supply circuit 32, a second end G1 of the bypass switch 33 and an output end G2 of the buck-boost switching power supply circuit 32 are electrically connected with an input end G3 of the energy storage module 40, and a control end D1 of the buck-boost switching power supply circuit 32 and a control end D2 of the bypass switch 33 are electrically connected with the digital processing module 50.
Illustratively, the rectifier diode 31 may be a GaN diode, the buck-boost switching power circuit 32 may be a GaN buck-boost switching power circuit, the digital processing module 50 may control the on and off of the bypass switch 33, when the bypass switch 33 is controlled to be turned off, the voltage and the current of the coupling energy output by the energy matching circuit 20 through the output terminal a2 are rectified by the rectifier diode 31 and then output to the buck-boost switching power circuit 32, the digital processing module 50 outputs a boost or buck control signal to the buck-boost switching power circuit 32, the buck-boost switching power circuit 32 performs boost or buck processing on the voltage output by the rectifier diode 31 to obtain a constant voltage, and outputs the constant voltage to the energy storage module 40 through the output terminal G2; when the bypass switch 33 is controlled to be closed, the voltage and the current of the coupled energy output by the energy matching circuit 20 through the output terminal a2 are rectified by the rectifier diode 31 and then directly output to the energy storage module 40 through the bypass switch 33. The digital processing module 50 controls the on-off of the bypass switch 33, so that two radio frequency energy channels can be gated, the whole system has a linkage, the digital processing module 50 controls the on-off of the bypass switch 33 in real time, and the final selection purpose is achieved by controlling the on-off of the bypass switch 33.
Fig. 6 is a block diagram of another wireless energy absorption system according to an embodiment of the present invention, and on the basis of the above technical solution, optionally, referring to fig. 6, the digital processing module 50 is further electrically connected to the energy storage module 40 for adjusting the electric energy storage amount of the energy storage module 40.
The first output end E1 of the digital processing module 50 can be electrically connected to the control end E2 of the energy storage module 40, and controls and regulates the amount of electric energy stored in the energy storage module 40.
Optionally, the energy storage module 40 includes a plurality of switch storage units connected in parallel, each of which is electrically connected to the digital processing module 50.
Illustratively, the switch storage unit may be a switch capacitor or a voltage-controlled capacitor, that is, the energy storage module 40 may include a plurality of switch capacitors or voltage-controlled capacitors connected in parallel, each switch storage unit is electrically connected to the digital processing module 50, and the electric energy storage amount of the energy storage module 40 may be adjusted by the digital processing module 50, so as to maximize the electric energy storage amount of the energy storage module 40. And a plurality of switch memory cells connected in parallel can be flexibly configured, so that the phenomenon that other capacitors can still work normally when the capacitor of a certain branch circuit is damaged can be avoided, and the breakdown of the whole system caused by the damage of a single component can be prevented in a remote area.
Optionally, the output terminal F1 of the energy storage module 40 is electrically connected to the power supply terminal F2 of the digital processing module 50 for supplying power to the digital processing module 50.
Specifically, the digital processing module 50 needs external power supply when in operation, the energy storage module 40 stores energy, and can be used as a power supply module of the digital processing module 50 to provide electric energy for the digital processing module 50, and no additional power supply device is needed to supply power to the digital processing module 50, so that resources are saved and implementation is facilitated.
Optionally, the antenna array 10 covers a Sub-6GHz mainstream frequency band, where the Sub-6GHz mainstream frequency band at least includes 0.7GHz, 0.9GHz, 1.8GHz, 2.1GHz, 2.6GHz, 3.6GHz, and 4.8 GHz.
Illustratively, the antenna array 10 includes not less than 1 set of wires, wherein the antenna selection of each frequency band is controlled by the digital processing module 50, and the energy matching module 20 is used to match and select the radio frequency energy in the space, so as to maximize the energy transmission.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A wireless energy absorption system, comprising:
the antenna array covers at least one frequency band, is used for coupling the radio frequency energy in the space and outputs the coupled energy;
the energy matching module is electrically connected with the antenna array and is used for performing impedance matching on the coupling energy;
the power supply conversion module is electrically connected with the energy matching module and used for receiving the coupling energy and converting the coupling energy to obtain stable electric energy;
the energy storage module is electrically connected with the power conversion module and used for receiving the electric energy and storing the electric energy;
and the digital processing module is respectively electrically connected with the antenna array, the energy matching module and the power conversion module, and is used for adjusting the frequency band of the antenna array for receiving the radio frequency energy and the matching impedance of the energy matching module, and controlling the power conversion module to rectify and/or transform the coupling energy according to the magnitude of the coupling energy.
2. The wireless energy absorbing system of claim 1, wherein the power conversion module is a GaN power conversion module.
3. The wireless energy absorbing system of claim 2, wherein the power conversion module comprises at least one of a CMOS, a rectifier diode, a buck-boost switching power circuit, and a charge pump.
4. The wireless energy absorbing system of claim 1, wherein the power conversion module comprises a rectifier diode, a buck-boost switching power circuit, and a bypass switch;
the input of rectifier diode with energy matching circuit's output electricity is connected, rectifier diode's output with bypass switch's first end and step-up and step-down switch power supply circuit's input electricity is connected, bypass switch's second end and step-up and step-down switch power supply circuit's output with energy storage module's input electricity is connected, step-up and step-down switch power supply circuit's control end and bypass switch's control end with digital processing module electricity is connected.
5. The wireless energy absorption system of any one of claims 1-4, wherein the digital processing module is further electrically coupled to the energy storage module for adjusting an amount of electrical energy stored by the energy storage module.
6. The wireless energy absorbing system of claim 5, wherein the energy storage module comprises a plurality of switch storage units connected in parallel, each of the switch storage units being electrically connected to the digital processing module.
7. The wireless energy absorption system of claim 1 wherein the output of the energy storage module is electrically connected to the digital processing module for powering the digital processing module.
8. The wireless energy absorption system of claim 1, wherein the energy matching module comprises a variable capacitance matching unit and an energy detection unit, the variable capacitance matching unit and the energy detection unit being electrically connected to the digital processing module, respectively;
the energy detection unit is used for detecting the magnitude of the coupling energy; the digital processing module is specifically configured to: and adjusting the capacitance of the variable capacitance matching unit and the frequency band of the antenna array for receiving the radio frequency energy according to the coupling energy so as to maximize the coupling energy.
9. The wireless energy absorption system of claim 8, wherein the variable capacitance matching unit comprises a plurality of switched capacitors, or at least one voltage controlled variable capacitor, or a combination of switched capacitors and voltage controlled variable capacitors, the switched capacitors and/or the voltage controlled variable capacitors being electrically connected with the digital processing module.
10. The wireless energy absorption system of claim 1, wherein the antenna array covers a Sub-6GHz mainstream frequency band, the Sub-6GHz mainstream frequency band comprising at least 0.7GHz, 0.9GHz, 1.8GHz, 2.1GHz, 2.6GHz, 3.6GHz, and 4.8 GHz.
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