Wireless energy signal synchronous transmission device for rotating structure

Abstract

The application provides a wireless energy signal synchronous transmission device for a rotating structure, comprising a transmitting device and a receiving device, the transmitting device comprises a sleeve structure, the receiving device comprises a core barrel structure, the core barrel structure is nested in the sleeve structure and can rotate coaxially relative to the sleeve structure, the sleeve structure comprises a sleeve body and a first annular boss protruding from the periphery of the sleeve body, and the core barrel structure comprises a core barrel body and a second annular boss protruding from the periphery of the core barrel body. The effect is that the application realizes energy receiving and signal receiving through the transmitting coil and the receiving coil with two different structural forms respectively, reduces the cross influence between the energy field and the signal field, and through the nested structural layout, the core barrel structure and the sleeve structure do not interfere with each other when the rotor and the stator rotate relative to each other, so the application is very suitable for energy signal synchronous transmission of the rotating structure.

Description

Technical Field

[0001] This invention relates to wireless power transmission technology, and more specifically to a wireless power signal synchronization transmission device for a rotating structure. Background Technology

[0002] Traditional power transmission methods are no longer sufficient for certain specialized applications. For example, in rotating structures, the energy demand of electrical equipment on rotating parts is often supplied through conductive slip rings. However, conductive slip rings have several drawbacks: First, they are subject to wear. High lubricant content results in less wear but poorer conductivity; conversely, low lubricant content improves conductivity but increases wear. Second, the contact area between the slip ring and the brush generates significant heat. Since the channels of the conductive ring must be insulated, and insulating materials typically have poor thermal conductivity, heat dissipation through conduction is difficult.

[0003] To address this, some researchers have attempted new methods to transmit electrical energy to devices on rotating components. For example, rolling ring technology transforms sliding friction into rolling friction, reducing wear, but issues such as uneven stress on the rolling elements and the inability to remove grinding debris remain. Mercury bus ring technology uses liquid metal to replace sliding friction, eliminating wear, but sealing is difficult. Optical bus ring technology uses non-contact optical fiber as the transmission medium, but the power it can transmit is relatively small. Therefore, none of these technologies can fully meet the requirements for long-life electrical energy transmission between rotating interfaces of moving parts.

[0004] Furthermore, existing energy transmission mechanisms often require additional communication modules to achieve control signal transmission and sensor signal acquisition, resulting in complex installation structures. Summary of the Invention

[0005] Based on the above, this invention proposes a wireless energy signal synchronous transmission device for applications where the coupling mechanism can rotate. By adopting an embedded coupling structure, it enables 360° synchronous transmission of wireless energy and communication.

[0006] To achieve the above objectives, the specific technical solution adopted by the present invention is as follows:

[0007] The key feature of the wireless energy signal synchronization transmission device for a rotating structure is that it includes a transmitting device and a receiving device. The transmitting device includes a sleeve structure, and the receiving device includes a core cylinder structure. The core cylinder structure is nested within the sleeve structure, and the two can rotate coaxially relative to each other.

[0008] The sleeve structure includes a sleeve body and a first annular boss protruding from the periphery of the sleeve body. A first can-shaped magnetic core is disposed in the sleeve body. A tubular transmitting coil is wound in a circular pattern between the winding post and the can wall of the first can-shaped magnetic core. A planar transmitting coil is wound in a circular pattern on the first annular boss. The tubular transmitting coil is used to connect to an energy transmitting circuit to realize wireless energy transmission, and the planar transmitting coil is used to connect to a signal transmitting circuit to realize wireless signal transmission.

[0009] The core structure includes a core body and a second annular boss protruding from the periphery of the core body. A second can-shaped magnetic core is disposed in the core body. A tubular receiving coil is wound in a circular pattern between the winding post and the can wall of the second can-shaped magnetic core. A planar receiving coil is wound in a circular pattern on the second annular boss. The tubular receiving coil is used to connect to an energy receiving circuit to achieve wireless energy reception, and the planar receiving coil is used to connect to a signal receiving circuit to achieve wireless signal reception.

[0010] Optionally, both the first and second can-shaped magnetic cores have two radially symmetrical mounting holes on their can walls, and the winding posts of both the first and second can-shaped magnetic cores are hollow winding posts.

[0011] Optionally, the sleeve body has a cavity consisting of a first cavity and a second cavity. The diameter of the first cavity is larger than that of the second cavity, and the cavity walls of the two are connected by an annular plane. The core body is nested in the first cavity, and the first can-shaped magnetic core is disposed in the second cavity.

[0012] Optionally, a first circuit board is also provided in the second cavity. The first circuit board integrates an energy transmission circuit and a signal transmission circuit. A first magnetic shielding panel is also provided between the first circuit board and the first can-shaped magnetic core.

[0013] Optionally, the sleeve structure further includes a first rotating cylinder, the bottom of which is provided with a first central hole through which the sleeve body passes, and a plurality of first assembly holes are evenly distributed around the bottom of the cylinder surrounding the first central hole. A first fixing hole corresponding to the first assembly hole is provided on the annular plane, and the sleeve body is connected and fixed to the first rotating cylinder by a first bolt.

[0014] Optionally, the first annular boss abuts against the top of the first rotating cylinder, and a first coil slot for engaging the planar transmitting coil is provided on the upper annular surface of the first annular boss.

[0015] Optionally, a second circuit board is also provided in the cavity of the core body. The second circuit board integrates an energy receiving circuit and a signal receiving circuit. A second magnetic shielding panel is also provided between the second circuit board and the second can-shaped magnetic core.

[0016] Optionally, the core cylinder structure further includes a second rotating cylinder. The top of the second rotating cylinder is provided with a second central hole through which the core cylinder body passes. A plurality of second assembly holes are evenly distributed around the top of the cylinder surrounding the second central hole. A second fixing hole corresponding to the second assembly hole is also provided on the second annular boss. The second annular boss is connected and fixed to the second rotating cylinder by a second bolt.

[0017] Optionally, a second coil slot for engaging the planar transmitting coil is provided on the lower annular surface of the second annular boss.

[0018] Optionally, the sleeve body, the first annular boss, the core body, and the second annular boss are all made of aluminum alloy.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. This invention can be used in a rotating structure wireless energy signal synchronization transmission system. The product has a compact structure and is easy to install.

[0021] 2. This invention achieves energy reception and signal reception by setting two different structural forms of transmitting coil and receiving coil, reducing the cross-influence between energy field and signal field. Through the nested structural layout, the core cylinder structure and the sleeve structure do not interfere with each other when the rotor and stator rotate relative to each other. Therefore, it is very suitable for synchronous transmission of energy signals in rotating structures.

[0022] 3. This invention uses a circular winding method to ensure stable transmission of energy or signal when the rotating component rotates at any angle. To address the problem of energy magnetic field interference with signal transmission, the energy coil is placed inside a can-shaped magnetic core, which restricts most of the energy magnetic field leakage. Furthermore, a frequency division method is used to increase the operating frequency level of the two coils, so that within the operating frequency range of the signal coil, the magnetic field strength of the energy coil is much smaller than that of the signal coil, thus solving the problem of energy magnetic field interference with signal transmission. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0024] Figure 1 This is a perspective view of Embodiment 1.

[0025] Figure 2 This is a perspective view of Example 1 from another angle;

[0026] Figure 3 This is a diagram showing the positional correspondence of the transmitting and receiving devices in Example 1 from one viewpoint.

[0027] Figure 4 This is a diagram showing the positions of the transmitting and receiving devices in Example 1 from another perspective.

[0028] Figure 5 This is an exploded view of the overall structure of Example 1;

[0029] Figure 6 This is a schematic diagram of the explosion of the launching device in Example 1;

[0030] Figure 7 This is an exploded schematic diagram of the receiving device in Embodiment 1;

[0031] The markings in the diagram are: 100-sleeve structure, 101-sleeve body, 102-first annular boss, 103-first can-shaped magnetic core, 104-tubular transmitting coil, 105-planar transmitting coil, 106-annular plane, 107-first circuit board, 108-first magnetic shielding panel, 109-first rotating cylinder, 110-first center hole, 111-first assembly hole, 112-first fixing hole, 113-first bolt, 114-first coil slot;

[0032] 200-Core cylinder structure, 201-Core cylinder body, 202-Second annular boss, 203-Second can-shaped magnetic core, 204-Tube receiving coil, 205-Planar receiving coil, 206-Second circuit board, 207-Second magnetic shielding panel, 208-Second rotating cylinder, 209-Second center hole, 210-Second assembly hole, 211-Second fixing hole, 212-Second bolt, 213-Second coil slot. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] Figures 1 to 5 A first embodiment of the present invention is shown: a wireless energy signal synchronization transmission device for a rotating structure, comprising a transmitting device and a receiving device, wherein the transmitting device includes a sleeve structure 100, and the receiving device includes a core cylinder structure 200, the core cylinder structure 200 being nested within the sleeve structure 100, and the two being coaxially rotatable relative to each other; wherein:

[0036] The sleeve structure 100 includes a sleeve body 101 and a first annular boss 102 protruding from the periphery of the sleeve body 101. A first can-shaped magnetic core 103 is disposed in the sleeve body 101. A tubular transmitting coil 104 is wound in a circular manner between the winding post and the can wall of the first can-shaped magnetic core 103. A planar transmitting coil 105 is wound in a circular manner on the first annular boss 102. The tubular transmitting coil 104 is used to connect to an energy transmitting circuit to realize wireless energy transmission, and the planar transmitting coil 105 is used to connect to a signal transmitting circuit to realize wireless signal transmission.

[0037] The core structure 200 includes a core body 201 and a second annular boss 202 protruding from the periphery of the core body 201. A second can-shaped magnetic core 203 is disposed in the core body 201. A tubular receiving coil 204 is wound in a circular pattern between the winding post and the can wall of the second can-shaped magnetic core 203. A planar receiving coil 205 is wound in a circular pattern on the second annular boss 202. The tubular receiving coil 204 is used to connect to an energy receiving circuit to realize wireless energy reception, and the planar receiving coil 205 is used to connect to a signal receiving circuit to realize wireless signal reception.

[0038] To achieve 360° omnidirectional energy and signal transmission, it is required that the energy output is stable and the signal transmission is error-free when the energy and signal coils on one side rotate at any angle. Therefore, both the energy coil (tubular transmitting coil 104 and tubular receiving coil 204) and the signal coil (planar transmitting coil 105 and planar receiving coil 205) adopt a circular winding method. According to the characteristics of circular coils, after applying alternating current, the magnetic field generated by the coils on the same plane is uniform. Therefore, when the rotor rotates, the coupling coils can well meet the requirements of stable energy and signal transmission.

[0039] To reduce the size of the installation structure, the signal coil is placed outside the corresponding energy coil. Most of the magnetic field is confined within the can-shaped magnetic core, but a small portion of strong magnetic field still leaks out, interfering with the signal coil and causing bit errors. To address this deficiency, a frequency division design is used during synchronous transmission of the wireless energy signal. The energy coil uses frequencies below 100 kHz, while the signal coil uses frequencies at MHz or higher. When the 100 kHz frequency energy magnetic field leaks into the signal coil's range, its MHz-level harmonic intensity drops rapidly, far less than the 100 kHz level magnetic field strength, and also far less than the MHz-level carrier strength applied to the signal coil, thus reducing the possibility of energy interference with the signal.

[0040] like Figure 3 , 4 As shown in Figure 5, in order to facilitate coil installation and improve heat dissipation performance, two radially symmetrical mounting openings are provided on the can walls of the first can-shaped magnetic core 103 and the second can-shaped magnetic core 203, and the winding posts of the first can-shaped magnetic core 103 and the second can-shaped magnetic core 203 are hollow winding posts.

[0041] Please see Figure 6In specific implementation, the sleeve body 101 has a cavity composed of a first cavity and a second cavity. The diameter of the first cavity is larger than that of the second cavity, and the cavity walls of the two are connected by an annular plane 106. The core cylinder 201 is nested in the first cavity, and the first can-shaped magnetic core 103 is disposed in the second cavity. A first circuit board 107 is also disposed in the second cavity, and the first circuit board 107 integrates an energy transmission circuit and a signal transmission circuit. To prevent the magnetic field from affecting the normal operation of the first circuit board 107, a first magnetic shielding panel 108 is also disposed between the first circuit board 107 and the first can-shaped magnetic core 103. Specifically, the sleeve structure 100 further includes a first rotating cylinder 109. The bottom of the first rotating cylinder 109 has a first central hole 110 through which the sleeve body 101 passes. A plurality of first mounting holes 111 are evenly distributed around the circumference of the bottom of the cylinder surrounding the first central hole 110. First fixing holes 112, corresponding one-to-one with the first mounting holes 111, are provided on the annular plane 106. The sleeve body 101 is connected and fixed to the first rotating cylinder 109 by first bolts 113. Preferably, to improve the insulation performance of the transmitting device, the first rotating cylinder 109 is made of insulating material.

[0042] from Figure 6 As can be seen, in order to achieve the positioning and assembly of the planar transmitting coil 105, the first annular boss 102 abuts against the top of the first rotating cylinder 109, and a first coil slot 114 for engaging the planar transmitting coil 105 is provided on the upper annular surface of the first annular boss 102.

[0043] like Figure 7 As shown, in this embodiment, a second circuit board 206 is also provided in the cavity of the core cylinder 201. The second circuit board 206 integrates an energy receiving circuit and a signal receiving circuit. To avoid the magnetic field affecting the normal operation of the second circuit board 206, a second magnetic shielding panel 207 is also provided between the second circuit board 206 and the second can-shaped magnetic core 203. Specifically, the core cylinder structure 200 also includes a second rotating cylinder 208. The top of the second rotating cylinder 208 is provided with a second central hole 209 through which the core cylinder 201 passes. A plurality of second mounting holes 210 are evenly distributed around the top of the cylinder surrounding the second central hole 209. A second fixing hole 211 corresponding to the second mounting hole 210 is also provided on the second annular boss 202. The second annular boss 202 is connected and fixed to the second rotating cylinder 208 by a second bolt 212. Preferably, in order to improve the insulation performance of the receiving device, the second rotating cylinder 208 is made of insulating material.

[0044] from Figure 7As can be seen, in order to achieve the positioning and assembly of the planar receiving coil 205, a second coil slot 213 for engaging the planar transmitting coil 105 is provided on the lower annular surface of the second annular boss 202.

[0045] It should also be noted that the sleeve body 101, the first annular boss 102, the core cylinder body 201 and the second annular boss 202 are all made of aluminum alloy, which can make the device as a whole form a relatively closed magnetic circuit, thereby further preventing magnetic leakage and improving the efficiency of wireless energy signal transmission.

[0046] In summary, this invention can be used in a wireless energy signal synchronization transmission system for rotating structures. The product has a compact structure and is easy to install. By using two different transmitting and receiving coil structures, this invention achieves energy reception and signal reception respectively, reducing the cross-influence between the energy and signal fields. Through a nested structural layout, the core cylinder structure 200 and the sleeve structure 100 do not interfere with each other when the rotor and stator rotate relative to each other, making it highly suitable for synchronous energy signal transmission in rotating structures. This invention uses a circular winding method for the coils, ensuring stable energy or signal transmission even when the rotating component rotates at any angle. To address the problem of energy magnetic field interference with signal transmission, the energy coil is placed inside a can-shaped magnetic core, constraining most of the energy magnetic field leakage. Furthermore, by employing a frequency division method, the operating frequency levels of the two coils are increased, ensuring that within the operating frequency range of the signal coil, the magnetic field strength of the energy coil is much smaller than that of the signal coil, thus solving the problem of energy magnetic field interference with signal transmission.

[0047] Furthermore, the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A wireless energy signal synchronization transmission device for a rotating structure, characterized in that: The device includes a transmitting device and a receiving device. The transmitting device includes a sleeve structure, and the receiving device includes a core cylinder structure. The core cylinder structure is nested within the sleeve structure, and the two are coaxially rotatable relative to each other. The sleeve structure includes a sleeve body and a first annular boss protruding from the periphery of the sleeve body. A first can-shaped magnetic core is disposed in the sleeve body. A tubular transmitting coil is wound in a circular pattern between the winding post and the can wall of the first can-shaped magnetic core. A planar transmitting coil is wound in a circular pattern on the first annular boss. The tubular transmitting coil is used to connect to an energy transmitting circuit to realize wireless energy transmission, and the planar transmitting coil is used to connect to a signal transmitting circuit to realize wireless signal transmission. The core structure includes a core body and a second annular boss protruding from the periphery of the core body. A second can-shaped magnetic core is disposed in the core body. A tubular receiving coil is wound in a circular fashion between the winding post and the can wall of the second can-shaped magnetic core. A planar receiving coil is wound in a circular fashion on the second annular boss. The tubular receiving coil is used to connect to an energy receiving circuit to achieve wireless energy reception, and the planar receiving coil is used to connect to a signal receiving circuit to achieve wireless signal reception. Both the first can-shaped magnetic core and the second can-shaped magnetic core have two radially symmetrical mounting holes on their can walls, and the winding posts of both the first can-shaped magnetic core and the second can-shaped magnetic core are hollow winding posts. The sleeve body has a cavity consisting of a first cavity and a second cavity. The diameter of the first cavity is larger than that of the second cavity, and the cavity walls of the two are connected by an annular plane. The core body is nested in the first cavity, and the first can-shaped magnetic core is disposed in the second cavity.

2. The wireless energy signal synchronization transmission device for a rotating structure according to claim 1, characterized in that: A first circuit board is also provided in the second cavity. The first circuit board integrates an energy transmission circuit and a signal transmission circuit. A first magnetic shielding panel is also provided between the first circuit board and the first can-shaped magnetic core.

3. The wireless energy signal synchronization transmission device for a rotating structure according to claim 2, characterized in that: The sleeve structure also includes a first rotating cylinder. The bottom of the first rotating cylinder is provided with a first central hole through which the sleeve body passes. A plurality of first assembly holes are evenly distributed around the bottom of the cylinder around the first central hole. A first fixing hole corresponding to the first assembly hole is provided on the annular plane. The sleeve body is connected and fixed to the first rotating cylinder by a first bolt.

4. The wireless energy signal synchronization transmission device for a rotating structure according to claim 3, characterized in that: The first annular protrusion abuts against the top of the first rotating cylinder, and a first coil slot for engaging the planar transmitting coil is provided on the upper annular surface of the first annular protrusion.

5. The wireless energy signal synchronization transmission device for a rotating structure according to any one of claims 1-4, characterized in that: A second circuit board is also provided in the cavity of the core body. The second circuit board integrates an energy receiving circuit and a signal receiving circuit. A second magnetic shielding panel is also provided between the second circuit board and the second can-shaped magnetic core.

6. The wireless energy signal synchronization transmission device for a rotating structure according to claim 5, characterized in that: The core cylinder structure also includes a second rotating cylinder. The top of the second rotating cylinder is provided with a second central hole through which the core cylinder body passes. A plurality of second assembly holes are evenly distributed around the top of the cylinder surrounding the second central hole. A second fixing hole corresponding to the second assembly hole is also provided on the second annular boss. The second annular boss is connected and fixed to the second rotating cylinder by a second bolt.

7. The wireless energy signal synchronization transmission device for a rotating structure according to claim 6, characterized in that: A second coil slot for engaging the planar transmitting coil is provided on the lower annular surface of the second annular boss.

8. The wireless energy signal synchronization transmission device for a rotating structure according to claim 1, 4, or 7, characterized in that: The sleeve body, the first annular boss, the core body, and the second annular boss are all made of aluminum alloy.

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