Wirelessly charged energy storage device

Abstract

The present invention is an energy storage device that is wirelessly charged. The device is characterized in that the housing (1) is made of a dielectric material having a dielectric constant in the range of 2 to 5 and a wall thickness in the range of 0.5 mm to 15 mm. At least one layered strip antenna (3) made of a conductive material is applied to the outer surface of the housing (1), in which successive antenna layers are separated by layers of dielectric material. Inside the housing (1), a housing guide (4) is formed, in which a PCB (5) having a system (6) for converting RF energy into DC is inserted. Terminals (7) connect the at least one energy storage module (2) to terminals (7) of a system for converting RF energy into DC, said terminals (7) and contacts (8) being embedded on a PCB (5) connected to the at least one antenna (3).

Description

Technical Field

[0001] The present invention is an energy storage device that is charged wirelessly, in particular, an energy storage device that is charged by collecting radio frequency electromagnetic waves. Background Art

[0002] A wirelessly charged battery known from U.S. Pat. No. US11043833 comprises: a housing configured to conform in size to a standardized battery size; one or more antennas arranged in the housing, the antennas configured to receive radio frequency (RF) wireless power from a wireless charging system; one or more electronic circuit boards arranged in the housing, the one or more electronic circuit boards configured to convert the received RF wireless power into direct current (DC) power; and one or more battery modules configured to store DC power; characterized in that one or more antennas have configurable polarity, and the wirelessly charged battery device is configured to determine and configure the optimal polarity of the one or more antennas in the following manner: for each of a plurality of antenna polarity patterns - configuring one or more antennas based on the relevant antenna polarity pattern and measuring the amount of received wireless power; and selecting the antenna polarity pattern with the largest measured amount of wireless power as the optimal antenna polarity for each antenna.

[0003] International PCT patent application number WO2021173676A1 describes a housing for a battery for wireless charging, the housing comprising a shell having a base and an open end opposite the base, wherein a hole is drilled in the base. The shell comprises an end piece that is attached to the shell near the base and has opposite open ends. The shell comprises a first conductive coating formed on an interior surface of the shell and a first surface of the base and a second conductive coating formed on an interior surface of the end piece and a second surface of the base, wherein the shell and the end piece are configured to conform to a standardized battery size in size. The battery is arranged inside a cavity in the shell, and the circuit is arranged inside the cavity of the end piece. Summary of the invention

[0004] According to the present invention, the housing is made of a dielectric material having a dielectric constant in the range of 2 to 5 and a wall thickness of 0.5 mm to 15 mm, and at least one layered strip antenna made of a conductive material is applied to the outer surface of the housing, with successive antenna layers separated by a dielectric material layer. Inside the housing, a guide is formed, in which a PCB having a system for converting RF energy into DC is inserted. Terminals connect at least one energy storage module to the terminals of the system for converting RF energy into DC, and the terminals and contacts are embedded on the PCB connected to the at least one antenna.

[0005] Preferably, one of the poles of the antenna is embedded in the outer surface of the housing, the ground portion of the antenna is embedded inside the housing and connected to the ground of the system for converting RF energy into DC, and the antenna is equipped with contacts for transmitting signals to the matching input of the RF to DC energy conversion system and the ground of the system. The geometry of the antenna and the thickness and dielectric constant of the housing material determine the width of the radio wave absorption range.

[0006] Preferably, the dielectric material is a plastic selected from the group consisting of Teflon, silicone, PS, PP, ABS, PVC, PE, and rubber.

[0007] Advantageously, the housing is a spatial figure having a cross section selected from the group consisting of a polygon and an ellipse, advantageously the housing is a spatial figure having a circular cross section.

[0008] Preferably, at least one wall of the housing is corrugated at the top, preferably at least one wall of the housing is corrugated over its entire height.

[0009] Preferably, the antenna has a length corresponding to λ / 2n, wherein λ is the length of an electromagnetic wave and n is an integer; or, the antenna has a fractal length corresponding to λ / 2n, thereby achieving ultra-wideband matching of the antenna.

[0010] Preferably, the antenna is made of a composition comprising a conductive material selected from the group consisting of: silver, copper, aluminum, tin, graphite, graphene, the antenna being applied to the outer surface of the housing by printing techniques.

[0011] Preferably, the antenna is made of a composition comprising a conductive material selected from the group consisting of: silver, copper, aluminum, tin, graphite, graphene, the antenna being applied to the dielectric substrate in the form of a self-adhesive label attached to the outer surface of the housing.

[0012] Preferably, the composition comprises a conductive material selected from an alloy of: silver, copper, aluminum, tin, graphite, graphene.

[0013] Preferably, the housing is corrugated, to which an encapsulated conducting path is applied, said conducting path constituting an antenna with an increased received radio wave frequency range.

[0014] Preferably, the antenna is made in the form of a meander or wavy line.

[0015] Preferably, the printed circuit board with the RF to DC energy conversion system is a spring loaded PCB having only the relevant conducting elements thereon and additional conducting elements removed.

[0016] Preferably, the shell has a free space inside, which is used to tune the radio wave absorption band and match the input impedance of the antenna. The size and geometry of the free space are determined based on the size ratio of the shell, the thickness of the shell wall, and the dielectric constant of the shell material.

[0017] Preferably, the free space inside the housing is distributed along the entire length of the housing, or the free space inside the housing surrounds the energy storage module along the entire length of the housing, or the free space inside the housing is located above and below the energy storage module.

[0018] Preferably, the energy storage module is therefore located in free space so that it does not interfere with the absorption band of radio waves and the matching impedance of the antenna input.

[0019] Preferably, the energy storage module comprises at least one battery and / or at least one supercapacitor.

[0020] Preferably, the PCB and antenna are made using rigid-flexible PCB technology, wherein the PCB is made using rigid PCB technology, the antenna is made using the aforementioned flexible PCB technology and is directly connected to the circuit of the PCB, and furthermore, the antenna is pasted to the outer surface of the shell.

[0021] Preferably, the antenna manufactured using the aforementioned flexible PCB technology is in the form of a self-adhesive label.

[0022] The energy storage device according to the present invention allows the transfer of energy to the energy storage system in a wireless manner, especially to devices that are located in difficult-to-reach places or cannot be charged via cables. It also creates the possibility of charging the energy storage device in many devices without removing the energy storage device. The device is able to collect electromagnetic radiation smog and use it to charge the energy storage system. In addition, the device allows continuous and uninterrupted charging of the energy storage system, even when the system is not in use, to extend the service life of the potential batteries used, as the batteries will shorten their life due to the self-discharge process. This allows the elimination of traditional batteries and the replacement of low-energy device power systems with energy collection and storage systems to reduce the pollution caused to the environment by used and still toxic batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The subject matter of the invention in its embodiment is illustrated in the accompanying drawings, in which: Figure 1 A wirelessly charged electrical energy storage device without a housing is shown in an axonometric view, Figure 2 A wirelessly charged electrical energy storage device with a housing is shown in an isometric view, Figure 3 An isometric view of the PCB printed circuit board inside the housing is shown, Figure 4an isometric view of a housing showing an antenna with meanders applied to the corrugated side surface of the housing, Figure 5 An isometric view of a housing having a meandering antenna applied to the cylindrical side surface of the housing is shown, Figure 6 A schematic diagram shows a vertical section through a housing with straight side walls, wherein the energy storage modules are distributed in the free space along the entire housing height and the antenna is applied from a first side to the entire housing height and from a second side to half the height, Figure 7 A schematic diagram shows a vertical section through a housing with corrugated walls, wherein energy storage modules are distributed in the free space along the entire housing height and antennas are applied to the entire housing height, Figure 8 A schematic diagram shows a vertical section through a housing with corrugated walls, wherein energy storage modules are arranged symmetrically inside the housing and antennas are applied over the entire housing height, Fig. 9 A schematic diagram shows a vertical section through a housing with straight side walls, wherein energy storage modules are arranged symmetrically in the free space inside the housing and an antenna is applied from a first side to the entire housing height and from a second side to half the height of the housing, Fig.10 A schematic diagram shows a vertical section through a housing with straight side walls, wherein an energy storage module rests against the housing with free space above and below the energy storage module, and an antenna is applied from a first side to the housing height above the energy storage module and from a second side to the housing height above the energy storage module, Fig.11 shows a vertical section of a housing, wherein an energy storage module rests against the housing with corrugated side walls above and below the energy storage module and with free space above and below the energy storage module, and an antenna is applied to the corrugated side walls, and Fig.12 A strip antenna of three layers of conductive material separated by two layers of dielectric material is shown. DETAILED DESCRIPTION

[0024] Example 1

[0025] The device for wireless charging and storing electric energy includes a housing 1, in which an energy storage module 2 is embedded, and the energy storage module 2 is connected to an RF to DC energy conversion system 6 having two antennas 3. The housing 1 is made of a dielectric material having a dielectric constant of 2 and a wall thickness of 0.5 mm, in particular, the housing 1 is made of Teflon. The housing 1 is a three-dimensional shape with a constant cross-section, which is circular. In addition, the top of the housing is closed with a cover equipped with a positive pole 10 of the device, and the bottom is closed with the energy storage module 2. Two strip antennas 3 made of conductive material are applied to the outer surface of the housing 1. Inside the housing 1, a housing guide 4 is formed, and a printed circuit board PCB 5 with an RF to DC energy conversion system 6 is inserted into the housing guide 4. There are terminals 7 on the printed circuit board PCB 5, which connect the energy storage module 2 to the terminal 7 of the RF to DC energy conversion system, and contacts 8 are formed on the printed circuit board PCB 5, and the antenna 3 is connected to the contact 8. On the outer surface of the housing 1, one of the poles of the antenna 3 is mounted, and the ground part (mass) of the antenna 3 is embedded in the interior of the housing 1 and connected to the ground part of the RF to DC energy conversion system 6. The antenna 3 is equipped with a contact 8, which is used to transmit the signal to the input end of the RF to DC energy conversion system 6 and the ground part of the RF to DC energy conversion system 6. The geometry of the antenna 3 and the thickness and dielectric constant of the housing 1 material determine the width of the radio wave absorption range. The antenna 3 has a length corresponding to λ / 2, where λ is the wavelength of the electromagnetic wave, and the antenna 3 is made of a composition containing silver and is applied to the outer surface of the housing 1 by screen printing technology. The energy storage module 2 is a battery, which is located in the free space 9 so that the energy storage module 2 does not interfere with the radio wave absorption band and matches the input impedance of the antenna 3.

[0026] Example 2

[0027] The device for wireless charging and storing electric energy is made according to the first example, except that the housing 1 is made of ABS dielectric material having a dielectric constant of 3.3 and a wall thickness of 15 mm, and four strip antennas 3 made of a conductive material in the form of a composition containing copper as a conductive material are applied to the outer surface of the housing 1. In addition, the antenna 3 has a length corresponding to λ / 2n, where λ is the wavelength of the electromagnetic wave and n is an integer and equal to 3. The housing 1 is a three-dimensional shape of a cylinder with a circular cross-section, and the housing 1 is made of ABS as a dielectric material having a dielectric constant of 3.3, and the housing 1 has a corrugated upper side surface. In addition, conductive tracks constituting the packaging of the antennas 3 are applied to the housing 1, and these antennas extend the frequency range of the received radio waves.

[0028] Example 3

[0029] The device for wireless charging and storing electrical energy is made in the same way as the first example, but the difference is that the housing 1 is made of a dielectric material in the form of silicone with a dielectric constant of 10 and a wall thickness of 15 mm. Six strip antennas 3 are applied to the outer surface of the housing 1, and the six strip antennas 3 are made of a conductive material in the form of a composition containing aluminum as a conductive material. In addition, the antenna 3 has a length corresponding to λ / 2n, where λ is the length of the electromagnetic wave and n is an integer and equal to 2. The antenna 3 is made of a composition containing copper as a conductive material. The housing 1 is a cylindrical spatial figure with an elliptical cross-section, and the housing 1 is made of silicone with a dielectric constant of 10. The printed circuit board with a circuit for converting RF energy into DC is a spring-loaded printed circuit board 5 (PCB), on which only relevant conductive elements are present, and additional conductive elements have been removed. In addition, the antenna 3 has a fractal length corresponding to λ / 2n, thereby achieving ultra-wideband matching of the antenna 3.

[0030] Example 4

[0031] The device for wireless charging and storing electric energy is made in the same manner as the first to third examples, except that a free space 9 is provided inside the housing 1, the free space 9 is used to tune the absorption band of radio waves and match the input impedance of the antenna 3, and the size and geometry of the free space 9 are determined based on the size ratio of the housing 1, the thickness of the wall of the housing 1, and the dielectric constant of the material of the housing 1. In addition, a self-adhesive label is attached to the outer surface of the housing 1 in the manner of applying the antenna 3 to a dielectric substrate.

[0032] Example 5

[0033] The device for wireless charging and storing electrical energy is manufactured in the same manner as in the fourth example, except that in a shell 1 having straight side walls, the energy storage module 2 is arranged in the free space 9 along the height of the entire shell 1, and the antenna 3 is applied from the first side to the height of the entire shell 1 and from the second side to half its height.

[0034] Example 6

[0035] The device for wireless charging and storing electrical energy is manufactured in the same manner as in the fourth example, except that in a shell 1 having corrugated walls, an energy storage module 2 is arranged in free space along the entire height of the shell, and an antenna 3 is applied to the entire height of the shell.

[0036] Example 7

[0037] The device for wireless charging and storing electrical energy is manufactured in the same manner as in the fourth example, except that in a shell 1 having corrugated walls, the energy storage module 2 is symmetrically arranged inside the shell and the antenna 3 is applied to the height of the entire shell 1.

[0038] Example 8

[0039] The device for wireless charging and storing electrical energy is manufactured in the same manner as in the fourth example, except that in a shell 1 having straight side walls, the energy storage module 2 is symmetrically arranged inside the shell, and the antenna 3 is applied from a first side to the height of the entire shell and from a second side to half the height of the shell.

[0040] Example 9

[0041] The device for wireless charging and storing electrical energy is made in the same way as in the fourth example, but with the difference that in a housing 1 with straight side walls, the energy storage module 2 is adjacent to the housing in such a way that free space is arranged above and below the energy storage module 2. The antenna is applied from a first side of the housing to the height of the housing 1 above the energy storage module 2 and from a second side of the housing to the height of the housing 1 above the energy storage module 2.

[0042] Example 10

[0043] The device for wireless charging and storing electrical energy is manufactured in the same manner as the fourth example, except that the energy storage module 2 is adjacent to the shell 1 in such a way that free space is arranged above and below the energy storage module 2, and above and below the energy storage module 2, the shell 1 has corrugated side walls, and the antenna is applied to the corrugated side walls.

[0044] Example 11

[0045] The device for wireless charging and storing electric energy is manufactured in the same manner as the first to third examples, except that the antenna 3 is manufactured in the form of a wavy line.

[0046] Example 12

[0047] The device for wireless charging and storing electric energy is manufactured in the same manner as the first to third examples, except that the energy storage module 2 is a battery.

[0048] Example 13

[0049] The device for wireless charging and storing electric energy is manufactured in the same manner as the first to third examples, except that the energy storage module 2 is a supercapacitor.

[0050] Example 14

[0051] The device for wireless charging and storing electric energy is manufactured in the same manner as the first to third examples, except that the energy storage module 2 is three batteries.

[0052] Example 15

[0053] The device for wireless charging and storing electric energy is manufactured in the same manner as the first to third examples, except that the energy storage module 2 is five supercapacitors.

[0054] Example 16

[0055] The device for wireless charging and storing electric energy is manufactured in the same manner as the first to third examples, except that the printed circuit board PCB 5 and the antenna 3 are manufactured using rigid-flex PCB technology. The PCB 5 is manufactured using rigid PCB technology, the antenna 3 is manufactured using flexible PCB technology, and the antenna 3 is directly connected to the circuit of the PCB 5. In addition, the antenna 3 is attached to the outer surface of the housing 1.

[0056] Example 17

[0057] The device for wireless charging and storing electrical energy is manufactured in the same manner as the sixteenth example, except that the antenna 3 manufactured using flexible PCB technology is in the form of a self-adhesive label.

[0058] Example 18

[0059] The device for wireless charging and storing electrical energy is made in the same manner as the first to third examples, except that three layers of strip antennas 3 made of conductive material are applied to the outer surface of the housing 1. Continuous antenna 3 layers are separated by layers of dielectric material.

[0060] The device for wireless charging and storing electrical energy has a housing 1 made of any dielectric plastic material with a dielectric constant in the range of 2 to 10, in particular materials such as silicone, Teflon, ABS, PVC, PE, PS, PP, and rubber. An antenna 3 made of a composition containing a conductive material selected from the following is applied to the dielectric housing: silver, copper, aluminum, tin, graphite, graphene, and alloys and mixtures thereof. The antenna 3 can be made in the form of a self-adhesive label, which has a dielectric substrate on which a composition containing a conductive material such as selected from the following is applied: silver, copper, aluminum, tin, graphite, graphene, and alloys and mixtures thereof. The composition is applied to the dielectric substrate in the form of a self-adhesive label, which is attached to the outer surface of the housing 1. The device according to the invention allows the collection of electromagnetic waves from the range of radio waves and then converts the absorbed electromagnetic wave energy into low-voltage direct current. Subsequently, the built-in conversion circuit increases the voltage of the absorbed charge and charges the energy storage module 2 to a set voltage. The energy storage module 2 is most commonly a battery, a capacitor, a supercapacitor, etc.

[0061] Index of symbols in the drawings:

[0062] 1. Shell

[0063] 2. Energy storage module

[0064] 3. Antenna

[0065] 4. Shell guide

[0066] 5. Printed Circuit Board PCB

[0067] 6.RF to DC energy conversion circuit

[0068] 7.Terminal

[0069] 8. Contact

[0070] 9. Free Space

[0071] 10. The positive terminal of the device.

Claims

1. A wireless charging energy storage device, the wireless charging energy storage device comprising: A housing, an energy storage module, a system for obtaining electromagnetic energy from the environment, the system for converting RF energy into DC, at least two antennas connected to the system, and in addition, the system for obtaining electromagnetic energy from the environment has a charging connector, characterized in that the housing (1) is made of a dielectric material with a dielectric constant in the range of 2 to 5 and a wall thickness of 0.5 mm to 15 mm, and at least one layered strip antenna (3) made of a conductive material is applied to the outer surface of the housing (1), wherein consecutive antenna layers are separated by dielectric material layers. Inside the housing (1), a housing guide (4) is formed, in which a PCB (5) having a system (6) for converting RF energy into DC is inserted, and in addition, a terminal (7) connects at least one energy storage module (2) to the terminal (7) of the system for converting RF energy into DC, and the terminal (7) and the contact (8) are embedded in the PCB (5) connected to the at least one antenna (3).

2. The device according to claim 1, characterized in that One of the poles of the antenna (3) is mounted on the outer surface of the shell (1), the grounding part of the antenna (3) is mounted inside the shell (1) and connected to the grounding part of the system for converting RF energy into DC, and the antenna (3) is equipped with a contact (8) for guiding the signal to the matching input terminal of the system for converting RF energy into DC and the grounding part of the system, and the geometric shape of the antenna (3) and the thickness and dielectric constant of the material of the shell (1) determine the width of the radio wave absorption range.

3. The device according to claim 1, characterized in that The dielectric material is a plastic selected from the group consisting of silicone, Teflon, ABS, PVC, PE, PS, PP, and rubber.

4. The device according to claim 1, characterized in that The shell (1) is a three-dimensional figure having a cross section selected from a group consisting of a polygon and an ellipse. Preferably, the shell (1) is a three-dimensional figure having a circular cross section.

5. The device according to claim 1, characterized in that At least one wall of the housing (1) is corrugated at the top, preferably at least one wall of the housing (1) is corrugated over its entire height.

6. The device according to claim 1, characterized in that The antenna (3) has a length corresponding to λ / 2n, where λ is the length of an electromagnetic wave and n is an integer.

7. The device according to claim 6, characterized in that The antenna (3) has a fractal length corresponding to λ / 2n, thereby achieving ultra-wideband matching of the antenna (3).

8. The device according to claim 1, characterized in that The antenna (3) is made of a composition comprising a conductive material selected from the group consisting of: silver, copper, aluminum, tin, graphite, graphene, and is applied to the outer surface of the housing (1) by printing technology.

9. The device according to claim 1, characterized in that The antenna (3) is made of a composition comprising a conductive material selected from the group consisting of: silver, copper, aluminum, tin, graphite, graphene, and is applied to a dielectric substrate in the form of a self-adhesive label, which is adhered to the outer surface of the housing (1).

10. The device according to claim 8 or 9, characterized in that The composition comprises a conductive material selected from an alloy of: silver, copper, aluminum, tin, graphite, graphene.

11. The device according to claim 1, characterized in that The housing (1) is corrugated and a conducting path is applied to the housing (1), which forms an antenna (3) with an increased received radio wave frequency range.

12. The device according to claim 1, characterized in that The antenna (3) is manufactured in a meandering form.

13. The device according to claim 1, characterized in that The antenna (3) is made in the form of a wavy line.

14. The device according to claim 1, characterized in that The printed circuit board having a system for converting RF energy into DC is a spring-loaded PCB (5) on which only basic conducting elements are present and additional conducting elements have been removed.

15. The device according to claim 1, characterized in that There is a free space (9) inside the shell (1), and the free space (9) is used to tune the absorption band of radio waves and match the input impedance of the antenna (3). The size and geometry of the free space (9) are determined based on the size ratio of the shell (1), the wall thickness of the shell (1), and the dielectric constant of the material of the shell (1).

16. The device according to claim 15, characterized in that The free space (9) inside the housing (1) is distributed along the entire length of the housing (1).

17. The device according to claim 15, characterized in that The free space (9) inside the housing (1) surrounds the energy storage module (2) along the entire length of the housing (1).

18. The device according to claim 17, characterized in that The free space (9) inside the housing (1) is located above and below the energy storage module (2).

19. The device according to claim 15, characterized in that The energy storage module (2) is positioned in the free space (9) so as not to interfere with the absorption band of the radio waves and to match the input impedance of the antenna (3).

20. The device according to claim 1, characterized in that The energy storage module (2) comprises at least one battery and / or at least one supercapacitor.

21. The device according to claim 1, characterized in that: The PCB (5) and the antenna (3) are manufactured using a rigid-flexible PCB technology, wherein the PCB (5) is manufactured using a rigid PCB technology, and the antenna (3) is manufactured using a flexible PCB technology and is directly connected to the circuit of the PCB (5); in addition, the antenna (3) is adhered to the outer surface of the housing (1).

22. The device according to claim 21, characterized in that The antenna (3) made using flexible PCB technology is in the form of a self-adhesive label.

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