A long-distance charger and a long-distance charging system

Abstract

The present invention relates to the technical field of long-distance charging, and specifically discloses a long-distance charger and a long-distance charging system. The long-distance charger includes an energy converter, a locator, and a storage battery; the locator is located at a set position distance from the energy converter, obtains the real-time position information of the long-distance charger and sends it; the energy converter includes: a housing, which is a housing provided with a hollow charging cavity, and an energy collection hole for receiving an energy signal is provided on the side wall of the housing; an energy conversion array, which is located in the charging cavity, receives the energy signal and converts it into electric energy; a conductive transmission line, which is connected between the energy conversion array and the storage battery, and conducts the electric energy unidirectionally to the storage battery. The long-distance charger and the long-distance charging system of the present invention can achieve real-time charging over a long distance, do not need to be equipped with a large-sized battery, reduce the load and cost, and are applicable to devices such as unmanned aerial vehicles and unmanned boats with long-term endurance requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of long-distance charging, and particularly to a long-distance charger and a long-distance charging system. Background Art

[0002] With the popularization of electronic products and the explosive growth of electric vehicles, wireless charging can overcome the problems of aesthetics, cost, and limited charging distance of current cable charging, and has gradually become an urgently needed technology. Currently, the wireless charging technologies released by companies such as Samsung, Huawei, and Apple are based on the principle of Faraday electromagnetic induction. By supplying an alternating current with a certain frequency to the power transmission coil, a magnetic field with a continuously changing magnetic flux is generated. As a result, an induced current is generated in the power receiving coil, and after shaping it, the charging of the battery can be achieved. The power transmission coil and the power receiving coil only need to be aligned with each other and have no direct contact, so it is named wireless charging.

[0003] However, the field that has truly brought about the explosive growth of wireless charging is devices with long-term battery life requirements such as drones and unmanned boats. However, due to the limited load of these devices, they cannot carry large-scale batteries and energy sources. To achieve real-time charging during real-time battery life, wireless charging technology is required. However, in the wireless charging technology based on the principle of Faraday electromagnetic induction, only some short-distance wireless charging can be achieved. The distance between the power transmission coil and the power receiving coil should not be too far, generally not exceeding about 0.9 - 1.2 meters. Otherwise, problems such as magnetic flux leakage, low magnetic field utilization rate, low charging efficiency, and radiation problems will occur. Moreover, for these devices such as drones and unmanned boats that have long-term continuous battery life requirements, the distance between them and the charging device during movement is generally far, mostly far exceeding the distance of 1.2 meters, and their positions may change at any time. It is very difficult to achieve this long-distance wireless charging requirement through traditional electromagnetic induction wireless charging. Therefore, a long-distance wireless charging solution needs to be designed to solve these problems. Summary of the Invention

[0004] Aiming at the technical problems in the prior art, the present invention provides a long-distance charger and a long-distance charging system.

[0005] The present invention provides a long-distance charger, including,

[0006] an energy converter, a locator, and a storage battery; wherein,

[0007] The locator is located at a set position distance from the energy converter, locates the real-time position information of the long-distance charger and sends it;

[0008] Energy converter, comprising: a housing, which is a shell provided with a hollow charging cavity, and an energy collection hole for receiving an energy signal is provided on the side wall of the shell, receiving the energy signal fed back based on the real-time position information and transmitting it to the energy conversion array; an energy conversion array, located in the charging cavity, receiving the energy signal and converting it into electric energy; a conductive transmission line, connected between the energy conversion array and the storage battery, and conducting the electric energy unidirectionally to the storage battery.

[0009] Further, the housing is a metal housing, and the conductive transmission line includes: an anode transmission line and a cathode transmission line; the anode transmission line is the metal housing, and the energy conversion array is fixed on the inner wall of the metal housing; the cathode transmission line is a conductive film coated on the surface of the energy conversion array. Further, a groove adjacent to the position of the energy conversion array is provided on the inner wall of the metal housing.

[0010] Further, the included angle between the side surface and the bottom surface of the groove is 60 degrees to 120 degrees.

[0011] Further, the conductive film is a transparent conductive film.

[0012] Further, it further includes: a lens, and the lens is installed on the energy collection hole.

[0013] Further, it further includes: a wireless communication module, and the wireless communication module is electrically connected to the locator and sends the real-time position information outward.

[0014] The present invention also provides a long-distance charging system, including the above-mentioned long-distance charger, and,

[0015] An energy signal generator, generating an energy signal;

[0016] At least one mirror frame assembly, the mirror frame assembly includes: a mirror frame and a position perception controller; the mirror frame reflects the energy signal generated by the energy signal generator into the energy collection hole of the long-distance charger; the position perception controller is connected to the mirror frame, perceiving and sending the current state information of the mirror frame, receiving the state control instruction and controlling the state of the mirror frame;

[0017] A controller, connected to the long-distance charger, the energy signal generator and the mirror frame assembly, receiving the current state information of the mirror frame assembly, and sending state control instructions to the energy signal generator and the mirror frame assembly according to the real-time position information.

[0018] Further, the mirror frame includes a frame body, a reflecting mirror installed on the frame body, and a plurality of stepping motors installed under the frame body for adjusting the angle of the reflecting mirror, and the stepping motors are connected to the position perception controller.

[0019] Further,

[0020] The frame body includes a base, a plurality of feet installed at the lower edge of the base, and a screw rod with one end helically connected to the feet, where:

[0021] The reflector is installed on the base;

[0022] The other end of the screw rod is fixed to the output shaft of the stepping motor.

[0023] The long-distance charger and long-distance charging system of the present invention can achieve real-time charging over a very long distance, without the need to be equipped with a large-sized battery, reducing the load and cost, and are applicable to devices such as drones and unmanned boats with long-term endurance requirements. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a module composition diagram of the long-distance charger according to an embodiment of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the energy converter in the long-distance charger according to an embodiment of the present invention;

[0027] Figure 3 It is a cross-sectional schematic diagram of the energy converter in the long-distance charger according to an embodiment of the present invention;

[0028] Figure 4 It is a module composition diagram of the long-distance charging system according to an embodiment of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the long-distance charging system according to an embodiment of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the mirror frame in the long-distance charging system according to an embodiment of the present invention;

[0031] Wherein: 1 - long - distance charger, 101 - energy converter, 1011 - housing, 1012 - energy collection hole, 1013 - energy conversion array, 1014 - conductive transmission line, 1015 - groove, 1016 - reverse protection circuit, 102 - locator, 103 - storage battery, 104 - wireless communication module, 2 - energy signal generator, 3 - mirror frame assembly, 301 - mirror frame, 3011 - frame body, 3011a - base, 3011b - support leg, 3011c - screw rod, 3012 - reflector, 3013 - stepper motor, 302 - position sensing controller, 4 - controller. Detailed implementation mode

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0033] A long - distance charger 1 according to an embodiment of the present invention, as Figures 1 to 3 shown, includes an energy converter 101, a locator 102 and a storage battery 103; wherein, the locator 102 is located at a set position distance from the energy converter 101, locates the real - time position information of the long - distance charger 1 and sends it; the energy converter 101 includes: a housing 1011, which is a housing with a hollow charging cavity, and an energy collection hole 1012 for receiving energy signals is provided on the side wall of the housing, and the energy collection hole 1012 receives the energy signal fed back based on the real - time position information and transmits it to the energy conversion array 1013; the energy conversion array 1013 is located in the charging cavity, receives the energy signal and converts it into electric energy; the conductive transmission line 1014 is connected between the energy conversion array 1013 and the storage battery 103, and conducts the electric energy unidirectionally to the storage battery 103.

[0034] In the embodiments of the present invention, the specific medium of the energy signal converted into electric energy in the energy converter 101 is not limited, as long as it meets the long - distance transmission requirements of this solution. Taking laser as an example, laser has the characteristics of concentrated energy transmission and long transmission distance. Correspondingly, the energy conversion array 1013 should be a product that converts laser into electric energy, such as a photovoltaic cell. In the following embodiments of the present invention, laser is used as the energy signal to explain the whole solution, but it should be understood that the implementation solutions corresponding to other energy media that meet the long - distance charging of this solution also belong to the protection scope of the present invention.

[0035] For the locator 102, the embodiments of the present invention can be implemented through GPS technology. The locator 102 can obtain its own real-time position information. Since it is at a set position distance from the energy converter 101, it can indirectly obtain the real-time position information of the energy converter 101 and send the real-time position information outward.

[0036] Figure 2 It is a schematic structural diagram of the energy converter 101 of this embodiment. Figure 3 It is a schematic cross-sectional view of the energy converter 101 of this embodiment. The laser in this embodiment is an energy signal fed back according to the real-time position information of the locator 102. Therefore, the laser can enter through the energy collection hole 1012 on the side wall of the housing of the outer shell 1011. The energy conversion array 1013 in the hollow charging cavity of the outer shell 1011 converts the light energy of the laser into electrical energy through the photovoltaic effect or the photochemical effect. The conductive transmission line 1014 conducts the electrical energy unidirectionally to the storage battery 103, and the storage battery 103 realizes the storage of electrical energy.

[0037] The storage battery 103 in this embodiment is used to store the electrical energy converted by the energy converter 101, so as to meet the power consumption requirements of the long-distance charger 1 in this embodiment. For example, it powers the locator 102 so that the locator 102 can generate the real-time position information of the long-distance charger 1. The storage battery 103 in this embodiment is preferably implemented by a lithium battery with excellent performance, and the battery capacity of the storage battery 103 is selected according to the specific use environment.

[0038] The long-distance charger of the present invention can realize real-time charging over a long distance, without the need to be equipped with a large-sized battery, reducing the load and cost, and is applicable to devices such as unmanned aerial vehicles and unmanned boats with long-term endurance requirements.

[0039] Specifically, the outer shell 1011 of the embodiment of the present invention is a metal shell. The conductive transmission line 1014 includes: an anode transmission line and a cathode transmission line; the anode transmission line is the metal shell, and the energy conversion array 1013 is fixed on the inner wall of the metal shell; the cathode transmission line is a conductive film coated on the surface of the energy conversion array 1013. In this embodiment, the conductive transmission line 1014 uses the metal shell and the conductive film as the anode and the cathode respectively. After the energy conversion array 1013 converts the energy signal into electrical energy, the electrical energy is transmitted to the storage battery 103 for storage through the metal shell and the conductive film. When the energy signal is a laser, several photovoltaic cells serve as the energy conversion array 1013, and the conductive film is used to collect the electrons excited by the laser in the photovoltaic cells as the cathode, while the metal shell serves as the anode.

[0040] In the embodiments of the present invention, the material of the metal shell is not specifically limited, and it can be made of a relatively light aluminum material. The specific shape of the metal shell is not specifically limited in this embodiment either, and it can be designed asFigure 2 The cuboid shown can also be designed as a prism of other shapes. In the present invention, the position where the energy collection hole 1012 is provided is not specifically limited in this embodiment, and it can be set at any position on any side surface of the metal housing. For the shape of the energy collection hole 1012, it is preferably opened as a circle. In order to improve the efficiency of photoelectric conversion, several photovoltaic cells in this embodiment are arranged in an array, and each photovoltaic cell is connected in parallel with each other. The cathode of the photovoltaic cell is electrically connected to the conductive film, and its anode is electrically connected to the metal housing. The conductive film in this embodiment can be realized by using a transparent conductive film, such as an ITO film or a nano-silver film.

[0041] Specifically, as Figure 3 shown, a groove 1015 adjacent to the position of the energy conversion array 1013 is provided on the inner wall of the metal housing of the embodiment of the present invention. In order to reduce the reflection of the energy signal entering the metal housing and leaking out from the energy collection hole 1012, grooves 1015 are provided around the energy conversion array 1013 in the embodiment of the present invention. Preferably, the included angle between the side surface and the bottom surface of the groove 1015 is 60 degrees to 120 degrees to adjust the reflection angle of the laser in the metal housing and achieve the maximum conversion of light energy by the photovoltaic cell. Further, in order to reduce the laser leakage, the inner wall of the metal housing opposite to the energy collection hole 1012 has a wedge angle with a certain angle, which can disperse the laser when the laser is vertically incident and avoid the laser directly reflecting and shooting out from the energy collection hole 1012.

[0042] Specifically, the energy converter 101 of the embodiment of the present invention further includes: a lens, and the lens is installed on the energy collection hole 1012. The lens in this embodiment can be a convex lens or a concave lens to achieve the divergence of the laser, further reduce the laser leakage, and improve the charging efficiency.

[0043] Specifically, as Figure 1 shown, the long-distance charger 1 of the embodiment of the present invention further includes: a wireless communication module 104, and the wireless communication module 104 is electrically connected to the locator 102 to send out the real-time position information.

[0044] The wireless communication module 104 is also electrically connected to the storage battery 103, and the storage battery 103 supplies power to the wireless communication module 104. The wireless communication module 104 in this embodiment is used for wireless communication with external devices. The wireless communication module 104 in this embodiment is mainly used to send the real-time position information generated by the locator 102 so that other external devices can know the specific position of the long-distance charger 1 in this embodiment. Preferably, the wireless communication module 104 of the embodiment of the present invention can also send the power storage information of the long-distance charger 1 to other external devices, or receive some control instructions sent by external devices, which can be specifically determined according to the working purpose and power consumption requirements of the long-distance charger 1, and are not limited here.

[0045] Specifically, as Figure 1 shown, the energy converter 101 of the embodiment of the present invention further includes a reverse protection circuit 1016, which contains a high-power diode with unidirectional conduction. The positive input terminal of the reverse protection circuit 1016 is electrically connected to the metal shell, and the negative input terminal of the reverse protection circuit is electrically connected to the conductive film to define the current flow direction. When the remote charger 1 includes the reverse protection circuit 1016, the positive and negative electrodes of the storage battery 103 are respectively connected to the positive and negative electrodes of the output terminal of the reverse protection circuit 1016. The capacity of the storage battery 103 in this embodiment is configured according to the endurance requirement of the electrical device where the remote charger 1 is located. The electrical device in this embodiment can be an unmanned aerial vehicle, an unmanned ship, a submarine, etc.

[0046] The present invention also provides a remote charging system, as Figure 4 shown in Figure 5 the figure, which includes the above-mentioned remote charger 1, and an energy signal generator 2 that generates an energy signal; at least one mirror frame assembly 3, and the mirror frame assembly 3 includes: a mirror frame 301 and a position sensing controller 302; the mirror frame 301 reflects the energy signal generated by the energy signal generator 2 into the energy collection hole 1012 of the remote charger 1; the position sensing controller 302 is connected to the mirror frame 301, senses and sends the current state information of the mirror frame 301, and receives a state control instruction and controls the state of the mirror frame 301; a controller 4 is connected to the remote charger 1, the energy signal generator 2 and the mirror frame assembly 3, receives the current state information of the mirror frame assembly 3, and sends a state control instruction to the energy signal generator 2 and the mirror frame assembly 3 according to the real-time position information.

[0047] When the energy signal in the remote charger 1 is laser, correspondingly, the energy signal generator 2 is a laser, and the controller 4 sends a state control instruction to the laser according to the real-time position information, such as controlling the laser to turn on and off, and controlling the power of the laser emitted by the laser. The controller 4 is connected to the mirror frame assembly 3 and is used to send a state control instruction to the mirror frame assembly 3. The position sensing controller 302 in the mirror frame assembly 3 receives the state control instruction and controls the state of the mirror frame 301, such as adjusting the position of the mirror frame 301 to adjust the laser transmission path to smoothly enter from the energy collection hole 1012.

[0048] The controller 4 in this embodiment is connected to the remote charger 1, the energy signal generator 2 and the mirror frame assembly 3. The connection method in this embodiment is a communication connection, that is, a wired connection or a wireless connection that can realize information interaction. Taking the application of the remote charger 1 in an unmanned aerial vehicle as an example, when the unmanned aerial vehicle is flying in the air and is far from the energy signal generator 2 and the mirror frame assembly 3, preferably, the mirror frame assembly 3 is installed on the roof of a building, the top of a mountain or a satellite, and performs wireless communication with the controller 4.

[0049] The laser in this embodiment is used to generate a laser energy signal, and its output power should be determined by the anti-damage ability of the photovoltaic cell in the long-distance charger 1. The laser in this embodiment should be a continuous or quasi-continuous laser, with a wavelength less than or equal to 10164 nm and an output power range between 0.1 W and 10 W.

[0050] There is at least one mirror frame assembly 3 in this embodiment. To achieve higher accuracy in energy signal transmission, preferably, as Figure 5 shown in Figure 6 this embodiment includes two mirror frame assemblies 3. The first mirror frame assembly 3 is installed near the energy signal generator 2, reflects the energy signal emitted by the energy signal generator 2 to the second mirror frame assembly 3. The second mirror frame assembly 3 is installed on the roof or the top of a mountain, reflects the energy signal reflected by the first mirror frame assembly 3, and shoots it into the housing 1011 of the long-distance charger 1. The controller 4 adjusts the azimuth angle of the second mirror 301 according to the real-time position information of the long-distance charger 1, and then adjusts the transmission path of the energy signal.

[0051] Specifically, the mirror frame 301 includes a frame body 3011, a reflecting mirror 3012 installed on the frame body 3011, and a plurality of stepping motors 3013 installed under the frame body 3011 for adjusting the angle of the reflecting mirror 3012. The stepping motors 3013 are connected to the position sensing controller 302. The position sensing controller 302 controls the working state of the stepping motors 3013 through status control instructions. The stepping motors 3013 in this embodiment can also be replaced by voice coil motors, piezoelectric ceramics, etc., which are specifically determined by factors such as the adjusted distance range and cost. The stepping motors 3013 in this embodiment adjust the azimuth angle of the frame body 3011 through their rotation, and the azimuth angle of the reflecting mirror 3012 installed on the frame body 3011 changes synchronously, realizing the adjustment of the energy signal transmission path.

[0052] Specifically, as Figure 6 shown in

[0053] The stepping motor 3013 rotates to drive the screw 3011c to rotate synchronously, changing the distance between the screw 3011c and the supporting foot 3011b, thereby adjusting the height of the position of the base 3011a where the supporting foot 3011b is located. In the embodiment of the present invention, the number of the supporting feet 3011b is consistent with the number of the stepping motors 3013. The number of the supporting feet 3011b in this embodiment should be selected according to the shape of the base 3011a. For example, if the base 3011a is quadrilateral, a supporting foot 3011b can be installed respectively below the vertex positions of the quadrilateral, and then four stepping motors 3013 are installed through four screws 3011c correspondingly. By rotating specific numbers of turns respectively by these four stepping motors 3013, the azimuth angle of the base 3011a can be adjusted.

[0054] For the screw connection mode between the supporting foot 3011b and the screw 3011c, as Figure 6 shown, a threaded blind hole is opened on the supporting foot 3011b. The threaded blind hole is parallel to the direction of the supporting foot 3011b, and the screw 3011c is screwed into the threaded blind hole. The present invention can also adjust the height of the base 3011a only in the direction where the screw 3011c is located by opening a threaded through hole on the supporting foot 3011b. The specific implementation manners are not exemplified one by one here.

[0055] The long-distance charger and the long-distance charging system according to the embodiments of the present invention can achieve real-time charging over a long distance, without the need to be equipped with a large-sized battery, reducing the load and cost, and are applicable to devices such as unmanned aerial vehicles and unmanned boats with long-time endurance requirements.

[0056] The above further describes the present invention with the aid of specific embodiments. However, it should be understood that the specific descriptions here should not be construed as limiting the essence and scope of the present invention. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present invention.

Claims

1. A long-distance charger, characterized in that, Comprising: An energy converter, a locator and a storage battery; wherein, The locator is at a set position distance from the energy converter, locates the real-time position information of the long-distance charger and sends it; The energy converter includes: a housing, which is a housing provided with a hollow charging cavity, and an energy collection hole for receiving an energy signal is provided on the side wall of the housing, and receives the energy signal fed back based on the real-time position information and transmits it to the energy conversion array; the energy conversion array is located in the charging cavity, receives the energy signal and converts it into electric energy; a conductive transmission line is connected between the energy conversion array and the storage battery, and conducts the electric energy unidirectionally to the storage battery; The housing is a metal housing, and the conductive transmission line includes: an anode transmission line and a cathode transmission line; the anode transmission line is the metal housing, and the energy conversion array is fixed on the inner wall of the metal housing; the cathode transmission line is a conductive film coated on the surface of the energy conversion array; A groove adjacent to the position of the energy conversion array is provided on the inner wall of the metal housing; It further includes: a lens, and the lens is installed on the energy collection hole.

2. The long-distance charger according to claim 1, characterized in that, The included angle between the side surface and the bottom surface of the groove is 60 degrees to 120 degrees.

3. The long-distance charger according to claim 1, wherein, The conductive film is a transparent conductive film.

4. The long-distance charger according to claim 1, characterized in that, It further includes: A wireless communication module, which is electrically connected to the locator and sends the real-time position information outward.

5. A long-distance charging system, characterized in that, Comprising the long-distance charger according to any one of claims 1-4, and, An energy signal generator for generating an energy signal; At least one mirror frame assembly, the mirror frame assembly includes: a mirror frame and a position sensing controller; the mirror frame reflects the energy signal generated by the energy signal generator into the energy collection hole of the long-distance charger; the position sensing controller is connected to the mirror frame, senses and sends the current state information of the mirror frame, and receives a state control instruction and controls the state of the mirror frame; A controller is connected to the long-distance charger, the energy signal generator and the mirror frame assembly, receives the current state information of the mirror frame assembly, and sends a state control instruction to the energy signal generator and the mirror frame assembly according to the real-time position information.

6. The long-distance charging system according to claim 5, wherein, The mirror frame includes a frame body, a reflecting mirror installed on the frame body, and a plurality of stepping motors installed under the frame body for adjusting the angle of the reflecting mirror, and the stepping motors are connected to the position sensing controller.

7. The long-distance charging system according to claim 6, wherein The frame body includes a base, a plurality of supporting feet installed on the lower edge of the base, and a screw rod with one end screwed to the supporting feet, wherein: The reflecting mirror is installed on the base; The other end of the screw rod is fixed to the output shaft of the stepping motor.

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