Remote radio wave charging device and method

Abstract

The invention provides a long-distance radio wave charging device and method, and the device comprises a transmitting end and a receiving end, the transmitting end is in signal connection with the receiving end, the transmitting end is embedded into a terminal device, the receiving end is a remote controller, and the remote controller is responsible for receiving a radio wave signal and converting energy to achieve a long-distance wireless charging function. A main control unit, a Bluetooth module and a radio wave transmitting module are arranged in the transmitting end, and the main control unit is respectively connected with the Bluetooth module and the radio wave transmitting module; a main control module, an energy collection and conversion control module and a Bluetooth control module are installed in the receiving end, and the energy collection and conversion control module and the Bluetooth control module are connected with the main control module. The charging efficiency can be improved and the charging process can be managed; the transmitting end and the receiving end are higher in conversion efficiency when working at the same frequency, and can freely move within a certain range, so that the use convenience is improved.

Description

Technical Field

[0001] This application relates to the technical field of charging devices, and particularly to a long-distance radio wave charging device and method. Background Art

[0002] Short-distance wireless charging means transmitting electrical energy without physical connection to achieve the purpose of charging relatively low-power electronic products such as mobile phones, MP3 players, and Bluetooth headsets. Radio wave is a relatively mature technology, and its basic principle is similar to that of the early crystal radio. The representative company Powercast in this field said that its finally developed micro high-efficiency receiving circuit can capture the radio wave energy bounced back from the wall and maintain a stable DC voltage while adjusting according to the load. With only a transmitter installed on the wall plug and a "mosquito-type" receiver that can be installed on any low-voltage product, the Powercast solution can convert radio waves into direct current to charge the batteries of different electronic devices within a range of about 1 meter.

[0003] The existing technology directly emits radio waves through an antenna, and the method is similar to the signal transmission of a radio station. The receiving-end antenna receives chaotic and weak microwave energy for conversion to achieve charging.

[0004] The energy collection efficiency of the charging device in the existing technology is low, and the charging speed is slow. Therefore, it is necessary to design a long-distance radio wave charging device. Summary of the Invention

[0005] This application provides a long-distance radio wave charging device and method to solve the problem of low charging efficiency in the existing technology, realizing automatic detection and identification of devices, providing appropriate power according to the needs of the devices, and helping to improve the charging efficiency and manage the charging process.

[0006] This application provides a long-distance radio wave charging device, including a transmitting end and a receiving end;

[0007] The transmitting end is signal-connected to the receiving end, and the transmitting end is embedded in the terminal device;

[0008] The receiving end is a remote control, and the remote control is responsible for receiving radio wave signals and energy conversion to achieve the long-distance wireless charging function.

[0009] Preferably, a main control unit, a Bluetooth module, and a radio wave transmitting module are arranged in the transmitting end, and the main control unit is respectively connected to the Bluetooth module and the radio wave transmitting module.

[0010] Preferably, the radio wave transmitting module includes a rectifier U1, a transmitting chip U2, a voltage controlled oscillator U3, a triode Q1, and a triode Q2. The GND terminal of the rectifier U1 is grounded. The Vin terminal of the rectifier U1 is respectively connected to one end of a capacitor C3 and one end of a capacitor C5. The other end of the capacitor C3 and the other end of the capacitor C5 are both grounded. The Vout terminal of the rectifier U1 is respectively connected to one end of a capacitor C4 and one end of a capacitor C6. The other end of the capacitor C4 and the other end of the capacitor C6 are both grounded;

[0011] The GP5 terminal of the transmitting chip U2 is connected to the VCX0 terminal of the voltage controlled oscillator U3. The GP4 terminal of the transmitting chip U2 is connected to the television request signal terminal. The GP0 terminal of the transmitting chip U2 is connected to one end of a resistor R2. The other end of the resistor R2 is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded. The collector of the triode Q2 is connected to the emitter of the triode Q1. The base of the triode Q1 is connected to one end of a resistor R1. The other end of the resistor R1 is connected to the OUT terminal of the voltage controlled oscillator U3. The collector terminal of the triode Q1 is respectively connected to one end of an inductor L8 and one end of a capacitor C2. The other end of the capacitor C2 is connected to the Bluetooth antenna 1. The other end of the inductor L8 is respectively connected to the voltage terminal and one end of a capacitor C1. The other end of the capacitor C1 is grounded.

[0012] Preferably, a main control module, an energy harvesting and conversion control module U5, and a Bluetooth control module U6 are installed inside the receiving end. The energy harvesting and conversion control module U5 and the Bluetooth control module U6 are respectively connected to the main control module.

[0013] Preferably, the input end of the energy harvesting and conversion control module U5 is connected to an LC network, and the output end is connected to the Bluetooth control module U6. The Bluetooth control module U6 is connected to the Bluetooth antenna 2. The charging output end of the energy harvesting and conversion control module U5 is connected to a battery pack and grounded.

[0014] Preferably, the LC network includes inductors L1, L2, L3, L4, L5, L6, and L7. One end of the inductor L1 is respectively connected to the Bluetooth antenna 1 and one end of a capacitor C7. The other end of the capacitor C7 is respectively connected to one end of a capacitor C8 and one end of the inductor L2. The other end of the inductor L2 is grounded. The other end of the capacitor C8 is respectively connected to one end of the inductor L3 and one end of the inductor L4. The other end of the inductor L4 is connected to one end of the inductor L5. The other end of the inductor L5 is connected to the energy harvesting and conversion control module;

[0015] The other end of the inductor L1 is respectively connected to one end of a capacitor C9 and one end of a capacitor C10. The other end of the capacitor C10 is grounded. The other end of the capacitor C9 is respectively connected to the other end of the inductor L3 and one end of the inductor L6. The other end of the inductor L6 is connected to one end of the inductor L7. The other end of the inductor L7 is connected to the energy harvesting and conversion control module.

[0016] Preferably, a method for using a long-distance radio wave charging device includes the following steps:

[0017] A. When the Bluetooth control module in the remote control detects that the battery power is low, the Bluetooth of the remote control sends a charging request to the terminal, and the request is sent to the terminal device through the Bluetooth antenna 2;

[0018] B. After the Bluetooth system of the terminal device receives the request, it sends a demand to the transmitting end of the radio wave module. When the transmitting chip receives the signal, one path controls the frequency of the voltage-controlled oscillator, and the other path outputs data to the triode Q2. When the triode Q2 conducts, the radio wave signal is amplified by the triode Q1 and then radiates radio wave signals into space through the Bluetooth antenna 1;

[0019] C. When the Bluetooth antenna 1 receives the signal, it is selected by the LC network and then sent to the energy collection and conversion control module. The energy collection and conversion control module starts boost rectification and then energy conversion internally, and the collected energy is stored in the battery pack;

[0020] D. When the Bluetooth control module in the remote control detects that the battery voltage is fully charged, the remote control sends a request to the terminal, and the request is sent through the Bluetooth antenna 2 to inform the TV terminal that it can turn off the radio wave emission. When the TV terminal receives the shutdown request, the terminal TV sends a demand to the transmitting end of the radio wave module. When the transmitting chip receives the signal, it turns off the voltage-controlled oscillator and turns off the triode Q2 to reduce the power consumption of the TV terminal.

[0021] Beneficial effects: The invention is simple to operate, can automatically detect and identify devices, provide appropriate power according to the needs of the devices, which helps to improve the charging efficiency and manage the charging process; the transmitting end and the receiving end of the invention work at the same frequency with higher conversion efficiency, and can move freely within a certain range, improving the convenience of use.

[0022] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1This is the block diagram of the working principle of the present invention;

[0025] Figure 2 This is the circuit diagram of the radio wave transmitting module of the present invention;

[0026] Figure 3 This is the connection circuit diagram of the energy harvesting conversion control module of the present invention;

[0027] Explanation of reference numerals: Transmitting end 1, receiving end 2, main control unit 3, Bluetooth module 4, radio wave transmitting module 5, main control module 6. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the drawings are intended to cover non-exclusive inclusion.

[0030] Reference to "embodiment" herein means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase "embodiment" appearing in various places in the specification is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the present application. For example, in the description of the present application, terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0032] In addition, terms such as "first", "second", etc. in the description and claims of the present application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0033] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a screw, bolt or other fixing member; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a connection by welding, bonding or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0035] Please refer to Figures 1 - 3 , the present application discloses a long-distance radio wave charging device, including a transmitting end 1 and a receiving end 2;

[0036] The transmitting end 1 is signal-connected to the receiving end 2, and the transmitting end 1 is embedded in the terminal device;

[0037] The receiving end 2 is a remote control, and the remote control is responsible for receiving radio wave signals and energy conversion to achieve the long-distance wireless charging function.

[0038] In the present invention, a main control unit 3, a Bluetooth module 4 and a radio wave transmitting module 5 are arranged in the transmitting end 1, and the main control unit 3 is respectively connected to the Bluetooth module 4 and the radio wave transmitting module 5.

[0039] Among them, the radio wave transmitting module includes a rectifier U1, a transmitting chip U2, a voltage-controlled oscillator U3, a triode Q1 and a triode Q2. The GND terminal of the rectifier U1 is grounded. The Vin terminal of the rectifier U1 is respectively connected to one end of a capacitor C3 and one end of a capacitor C5. The other end of the capacitor C3 and the other end of the capacitor C5 are both grounded. The Vout terminal of the rectifier U1 is respectively connected to one end of a capacitor C4 and one end of a capacitor C6. The other end of the capacitor C4 and the other end of the capacitor C6 are both grounded;

[0040] The GP5 terminal of the transmitting chip U2 is connected to the VCX0 terminal of the voltage-controlled oscillator U3. The GP4 terminal of the transmitting chip U2 is connected to the TV request signal terminal. The GP0 terminal of the transmitting chip U2 is connected to one end of a resistor R2. The other end of the resistor R2 is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded. The collector of the triode Q2 is connected to the emitter of the triode Q1. The base of the triode Q1 is connected to one end of a resistor R1. The other end of the resistor R1 is connected to the OUT terminal of the voltage-controlled oscillator U3. The collector terminal of the triode Q1 is respectively connected to one end of an inductor L8 and one end of a capacitor C2. The other end of the capacitor C2 is connected to the Bluetooth antenna 1. The other end of the inductor L8 is respectively connected to the voltage terminal and one end of a capacitor C1. The other end of the capacitor C1 is grounded.

[0041] The voltage-controlled oscillator in the transmitting end of the present invention generates an alternating current signal with a specific frequency, amplifies the signal to a sufficient power level through a power amplifier, and then converts the high-frequency current into radio waves through the Bluetooth antenna and radiates them into space.

[0042] In the present invention, a main control module 6, an energy harvesting and conversion control module U5 and a Bluetooth control module U6 are installed in the receiving end 2. The energy harvesting and conversion control module U5 and the Bluetooth control module U6 are respectively connected to the main control module 6.

[0043] Among them, the input end of the energy harvesting and conversion control module U5 is connected to an LC network, and the output end is connected to the Bluetooth control module U6. The Bluetooth control module U6 is connected to the Bluetooth antenna 2. The charging output end of the energy harvesting and conversion control module U5 is connected to a battery pack and grounded; the LC network includes inductors L1, L2, L3, L4, L5, L6 and L7. One end of the inductor L1 is respectively connected to the Bluetooth antenna 1 and one end of a capacitor C7. The other end of the capacitor C7 is respectively connected to one end of a capacitor C8 and one end of the inductor L2. The other end of the inductor L2 is grounded. The other end of the capacitor C8 is respectively connected to one end of the inductor L3 and one end of the inductor L4. The other end of the inductor L4 is connected to one end of the inductor L5. The other end of the inductor L5 is connected to the energy harvesting and conversion control module;

[0044] The other end of the inductor L1 is respectively connected to one end of the capacitor C9 and one end of the capacitor C10. The other end of the capacitor C10 is grounded. The other end of the capacitor C9 is respectively connected to the other end of the inductor L3 and one end of the inductor L6. The other end of the inductor L6 is connected to one end of the inductor L7, and the other end of the inductor L7 is connected to the energy harvesting conversion control module. The Bluetooth antenna at the receiving end is responsible for capturing radio wave signals in space. Since radio waves will attenuate during propagation in space, the receiving antenna needs to have sufficient sensitivity to receive weak signals. The radio wave signals received at the receiving end are converted from high-frequency alternating current to direct current through the LC network. This process is similar to the rectification function in a traditional power supply, converting alternating current into stable direct current for device charging. To avoid affecting communication devices and achieve effective charging, the frequency is selected as 915 MHz. 915 MHz belongs to the ultra-high frequency (UHF) band. Radio waves in this band have certain propagation characteristics. Their wavelength is relatively short, they can penetrate obstacles to a certain extent, and the propagation effect is good within the line-of-sight range.

[0045] Working principle: A method of using a long-distance radio wave charging device includes the following steps:

[0046] A. When the Bluetooth control module in the remote control detects that the battery power is low, the Bluetooth of the remote control sends a charging request to the terminal, and the request is sent to the terminal device through the Bluetooth antenna 2;

[0047] B. After the Bluetooth system of the terminal device receives the request, it sends a demand to the transmitting end of the radio wave module. When the transmitting chip receives the signal, one path controls the frequency of the voltage-controlled oscillator, and the other path outputs data to the triode Q2. When the triode Q2 conducts, the radio wave signal is amplified by the triode Q1 and then radiates radio wave signals into space through the Bluetooth antenna 1;

[0048] C. When the Bluetooth antenna 1 receives the signal, it is sent to the energy harvesting conversion control module after frequency selection through the LC network. The energy harvesting conversion control module starts energy conversion after boosting and rectifying inside, and the harvested energy is stored in the battery pack;

[0049] D. When the Bluetooth control module in the remote control detects that the battery voltage is fully charged, the remote control sends a request to the terminal, and the request is sent through the Bluetooth antenna 2 to inform the TV terminal that it can turn off the radio wave transmission. When the TV terminal receives the shutdown request, the terminal TV sends a demand to the transmitting end of the radio wave module. When the transmitting chip receives the signal, it turns off the voltage-controlled oscillator and turns off the triode Q2 to reduce the power consumption of the TV terminal.

[0050] In summary, the present invention is simple to operate, can realize automatic detection and identification of devices, provide appropriate power according to the needs of the devices, and helps to improve the charging efficiency and manage the charging process; the transmitting end and the receiving end of the present invention work at the same frequency with higher conversion efficiency, can move freely within a certain range, and improve the convenience of use.

[0051] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A long-distance radio wave charging device, characterized in that: Includes a transmitter and a receiver; The transmitting end is signal-connected to the receiving end, and the transmitting end is embedded in the terminal device; The receiving end is a remote controller, which is responsible for receiving radio wave signals and converting energy to realize long-distance wireless charging function.

2. A long-distance radio wave charging device according to claim 1, characterized in that: The transmitting end is provided with a main control unit, a Bluetooth module and a radio wave transmitting module, and the main control unit is connected to the Bluetooth module and the radio wave transmitting module respectively.

3. A long-distance radio wave charging device according to claim 2, characterized in that: The radio wave transmitting module includes a rectifier U1, a transmitting chip U2, a voltage-controlled oscillator U3, a transistor Q1 and a transistor Q2, the rectifier U1GND end is grounded, the rectifier U1 Vin end is respectively connected to one end of a capacitor C3 and one end of a capacitor C5, the other end of the capacitor C3 and the other end of the capacitor C5 are both grounded, the rectifier U1 Vout end is respectively connected to one end of a capacitor C4 and one end of a capacitor C6, the other end of the capacitor C4 and the other end of the capacitor C6 are both grounded; The transmitting chip U2 GP5 is connected to the VCX0 end of the voltage-controlled oscillator U3, the transmitting chip U2 GP4 is connected to the TV request signal end, the transmitting chip U2 GP0 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is grounded, the collector of the transistor Q2 is connected to the emitter of the transistor Q1, the base of the transistor Q1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the OUT end of the voltage-controlled oscillator U3, the collector end of the transistor Q1 is respectively connected to one end of the inductor L8 and one end of the capacitor C2, the other end of the capacitor C2 is connected to the Bluetooth antenna 1, the other end of the inductor L8 is respectively connected to the voltage end and one end of the capacitor C1, and the other end of the capacitor C1 is grounded.

4. A long-distance radio wave charging device according to claim 1, characterized in that: The receiving end is installed with a main control module, an energy collection and conversion control module U5 and a Bluetooth control module U6, and the energy collection and conversion control module U5 and the Bluetooth control module U6 are respectively connected to the main control module.

5. A long-distance radio wave charging device according to claim 4, characterized in that: The input end of the energy collection and conversion control module U5 is connected to the LC network, and the output end is connected to the Bluetooth control module U6. The Bluetooth control module U6 is connected to the Bluetooth antenna 2. The charging output end of the energy collection and conversion control module U5 is connected to the battery pack and grounded.

6. A long-distance radio wave charging device according to claim 5, characterized in that: The LC network includes an inductor L1, an inductor L2, an inductor L3, an inductor L4, an inductor L5, an inductor L6 and an inductor L7, one end of the inductor L1 is respectively connected to the Bluetooth antenna 1 and one end of the capacitor C7, the other end of the capacitor C7 is respectively connected to one end of the capacitor C8 and one end of the inductor L2, the other end of the inductor L2 is grounded, the other end of the capacitor C8 is respectively connected to one end of the inductor L3 and one end of the inductor L4, the other end of the inductor L4 is connected to one end of the inductor L5, and the other end of the inductor L5 is connected to the energy collection conversion control module; The other end of the inductor L1 is respectively connected to one end of the capacitor C9 and one end of the capacitor C10, the other end of the capacitor C10 is grounded, the other end of the capacitor C9 is respectively connected to the other end of the inductor L3 and one end of the inductor L6, the other end of the inductor L6 is connected to one end of the inductor L7, and the other end of the inductor L7 is connected to the energy collection and conversion control module.

7. A method for using the long-distance radio wave charging device according to claim 1, characterized in that: The method of use includes the following steps: A. When the Bluetooth control module in the remote control detects that the battery is low, the remote control Bluetooth sends a charging request to the terminal, and the request is sent to the terminal device through Bluetooth antenna 2; B. After receiving the request, the Bluetooth system of the terminal device sends a request to the transmitter of the radio wave module. When the transmitting chip receives the signal, one of the channels is used to control the frequency of the voltage-controlled oscillator, and the other channel is used to output data to transistor Q2. When transistor Q2 is turned on, the radio wave signal is amplified by transistor Q1 and then transmitted to space by Bluetooth antenna 1. C. When the Bluetooth antenna 1 receives the signal, it is sent to the energy collection and conversion control module after the frequency is selected by the LC network. The energy collection and conversion control module starts energy conversion after the boost rectification is turned on inside. The collected energy is stored in the battery pack; D. When the Bluetooth control module in the remote control detects that the battery voltage is fully charged, the remote control sends a request to the terminal, which is sent through Bluetooth antenna 2 to inform the TV terminal that the radio wave transmission can be turned off. When the TV terminal receives the shutdown request, the terminal TV sends a request to the transmitter of the radio wave module. When the transmitting chip receives the signal, it turns off the voltage-controlled oscillator and turns off transistor Q2 to reduce the energy consumption of the TV terminal.

Images