Nested multi-channel wireless energy signal synchronous transmission mechanism with brushes

Abstract

The present invention provides a nested, multi-channel, wireless energy signal synchronous transmission mechanism with brushes. The mechanism comprises a cylindrical structure that can be sleeved onto a rotating shaft, a planar coil disposed on the bottom of the cylindrical structure, and a spiral coil disposed on the wall of the cylindrical structure. The planar coil is used to connect to a signal transmission circuit to achieve wireless signal transmission, while the spiral coil is used to connect to an energy transmission circuit to achieve wireless energy transmission. A brush assembly is connected above the cylindrical structure via a mounting structure, and the brush assembly is used to connect to a conductive slip ring to achieve sliding contact power transmission. The mechanism can be used in a wireless energy signal synchronous transmission system for rotating structures. The structure is compact and easy to install. The energy and signal coils are interleaved and operate at different resonant frequencies, effectively reducing mutual influence between the two.

Description

Technical Field

[0001] The present invention relates to wireless power transmission technology, and in particular to a nested multi-channel wireless energy signal synchronous transmitting mechanism with brushes. Background Art

[0002] Traditional methods of power transmission no longer meet the needs of certain specialized applications. For example, in wind power systems, when the wind drives the turbine, its blades often need to adjust their position. The energy required to drive the blades is often transmitted through conductive slip rings. However, conductive slip rings have many drawbacks: First, the conductive rings are subject to wear. A high lubricant content reduces wear, but conductivity deteriorates; conversely, a low lubricant content improves conductivity but increases wear. Second, the contact area between the slip ring and the brush generates significant heat. Since the conductive ring channels must be insulated, and insulating materials generally have poor thermal conductivity, heat dissipation from the conductive rings is difficult to achieve through conduction.

[0003] To this end, some new methods have been tried to transmit power to rotating parts. For example, rolling ring technology converts sliding friction into rolling friction, reducing wear, but still faces problems such as uneven stress on the rolling elements and the inability to remove grinding. Mercury slip ring technology uses liquid metal to replace sliding friction, eliminating wear but making sealing difficult. Optical slip ring technology uses contactless optical fiber as the transmission medium, but the power it can transmit is relatively low. Therefore, none of these technologies can fully meet the demand for long-term power transmission between the rotating interfaces of moving parts.

[0004] In addition, existing energy transmission mechanisms often require the addition of additional communication modules in order to achieve the transmission of control signals and the collection of sensor signals, and the installation structure is complex. Summary of the Invention

[0005] Based on the above situation, the present invention proposes a nested multi-channel wireless energy signal synchronous transmission mechanism with brushes for applications where the coupling mechanism is rotatable. By adopting a sleeve-type coupling structure, it realizes the synchronous transmission of wireless energy and signals.

[0006] In order to achieve the above object, the specific technical solutions adopted by the present invention are as follows:

[0007] A nested multi-channel wireless energy signal synchronous transmission mechanism with brushes is characterized in that it includes a cylindrical structure that can be sleeved on a rotating shaft (10), a planar coil (5) is arranged on the bottom (3) of the cylindrical structure, and a spiral coil (8) is arranged on the wall of the cylindrical structure, the planar coil (5) is used to connect to a signal transmission circuit to realize wireless signal transmission, the spiral coil (8) is used to connect to an energy transmission circuit to realize wireless energy transmission, and a brush assembly (12) is connected above the cylindrical structure through a mounting structure (11), and the brush assembly (12) is used to connect to a conductive slip ring to realize sliding contact type power transmission.

[0008] While retaining the sliding contact type of power transmission, the present invention realizes energy emission and signal emission respectively by setting two coils with different structural forms. By adopting different resonant frequencies, the cross-influence between the energy field and the signal field can be effectively reduced. The sleeve-type structural layout is very suitable for the synchronous transmission of energy signals of rotating bodies.

[0009] Optionally, the number of the brush assemblies (12) is multiple and is evenly distributed around the axial direction of the rotating shaft (10).

[0010] Optionally, the brush assembly (12) comprises a support body (13) extending along the length direction of the rotating shaft (10), and a plurality of brush pieces (14) are distributed at equal intervals on the support body (13).

[0011] Optionally, an inner layer mounting tube (6) is detachably connected to the bottom of the tube (3), the spiral coil (8) is wound on the outside of the inner layer mounting tube (6), an annular columnar magnetic core (7) is sleeved on the outside of the spiral coil (8), and an outer layer mounting tube (9) is sleeved on the outside of the annular columnar magnetic core (7), and the inner layer mounting tube (6) and the outer layer mounting tube (9) are both connected to the bottom of the tube (3) by flanges.

[0012] Optionally, an annular planar magnetic core (4) is further provided between the cylinder bottom (3) and the planar coil (5).

[0013] Optionally, the mounting structure (11) includes a bottom plate (1) arranged below the bottom of the cylinder (3), a circuit mounting cavity is reserved between the bottom plate (1) and the bottom of the cylinder (3), a top plate (16) for mounting the support body (13) is supported above the bottom plate (1) by a frame (15), and an outer protective shell is further provided between the top plate (16) and the bottom plate (1).

[0014] Optionally, the signal transmission circuit is arranged on the board surface of the barrel bottom (3), the energy emission circuit is arranged on the circuit mounting board (2), and the circuit mounting board (2) is arranged along the length direction of the circuit mounting cavity.

[0015] Optionally, one end of the cylindrical structure is open, the cross section of the port is circular, and an axial hole for the rotating shaft (10) to pass through is reserved on the bottom (3) of the cylindrical structure, the bottom plate (1) and the top plate (16).

[0016] Optionally, the planar coil (5) and the spiral coil (8) are both wound with Litz wire.

[0017] Optionally, the inner mounting cylinder (6) is made of magnetically permeable material.

[0018] Beneficial effects of the present invention:

[0019] The nested multi-channel wireless energy signal synchronous transmission mechanism with brushes proposed in the present invention can be used in the wireless energy signal synchronous transmission system of the rotating structure. The product has a compact structure and is easy to install. The energy and signal coils are arranged in an interlaced manner and operate at different resonant frequencies, which can effectively reduce the mutual influence between the two. At the same time, it also integrates the brush structure used for slip rings to realize sliding contact power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific implementation or the description of the prior art.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is an exploded schematic diagram of the cylindrical structure of the present invention;

[0023] Markings in the figure: 1-base plate, 2-circuit mounting plate, 3-cylinder bottom, 4-annular planar magnetic core, 5-planar coil, 6-inner mounting cylinder, 7-annular cylindrical magnetic core, 8-spiral coil, 9-outer mounting cylinder, 10-rotating shaft, 11-mounting structure, 12-brush assembly, 13-support body, 14-brush sheet, 15-skeleton, 16-top plate. DETAILED DESCRIPTION

[0024] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0025] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0026] like Figure 1 As shown, this embodiment provides a nested multi-channel wireless energy signal synchronous transmission mechanism with brushes, including a cylindrical structure that can be sleeved on a rotating shaft 10, a planar coil 5 is provided on the bottom 3 of the cylindrical structure, and a spiral coil 8 is provided on the wall of the cylindrical structure. The planar coil 5 is used to connect the signal transmission circuit to realize wireless signal transmission, and the spiral coil 8 is used to connect the energy transmission circuit to realize wireless energy transmission. A brush assembly 12 is connected above the cylindrical structure through a mounting structure 11, and the brush assembly 12 is used to connect a conductive slip ring to realize sliding contact power transmission. There are multiple brush assemblies 12, and they are evenly distributed around the axial direction of the rotating shaft 10. The brush assembly 12 includes a support body 13 extending along the length direction of the rotating shaft 10, and a plurality of brush pieces 14 are evenly spaced on the support body 13.

[0027] pass Figure 2 It can be seen that during the specific implementation, an inner layer mounting tube 6 is detachably connected to the bottom of the tube 3, the spiral coil 8 is wound on the outside of the inner layer mounting tube 6, an annular cylindrical magnetic core 7 is sleeved on the outside of the spiral coil 8, and an outer layer mounting tube 9 is also sleeved on the outside of the annular cylindrical magnetic core 7. The inner layer mounting tube 6 is made of magnetically conductive material, so that the energy field emitted by the spiral coil 8 can be smoothly transmitted inside and outside. The planar coil 5 and the spiral coil 8 are both wound with Litz wire, and an annular planar magnetic core 4 is also arranged between the bottom of the tube 3 and the planar coil 5.

[0028] In order to ensure stable installation, the inner installation cylinder 6 and the outer installation cylinder 9 are both connected to the cylinder bottom 3 by flanges.

[0029] In this embodiment, the mounting structure 11 includes a bottom plate 1 arranged below the bottom 3 of the cylinder, a circuit mounting cavity is reserved between the bottom plate 1 and the bottom 3 of the cylinder, and a top plate 16 for mounting the support body 13 is supported above the bottom plate 1 by a skeleton 15, and an outer protective shell is also provided between the top plate 16 and the bottom plate 1.

[0030] Specifically, the signal transmission circuit is mounted on the surface of the cylinder bottom 3, and the energy transmission circuit is mounted on the circuit mounting plate 2, which is arranged along the length of the circuit mounting cavity. One end of the cylinder structure is open, with a circular cross-section. Axial holes for the rotational shaft 10 are reserved in the cylinder bottom 3, the bottom plate 1, and the top plate 16.

[0031] During implementation, the signal transmission circuit can be arranged on the board surface of the bottom 3 of the tube, and the energy emission circuit can be arranged on the circuit mounting board 2, and most of the redundant space can be used to realize the installation of the energy emission circuit to meet the heat dissipation requirements of the circuit components.

[0032] from Figure 1 It can also be seen that, in a specific implementation, a wiring port is further provided on the side wall of the top plate 16 , and connection lines related to the circuit mounting board 2 and the brush assembly 12 are led out through the wiring port to be connected to the outside.

[0033] The working principle of the present invention is:

[0034] By adopting a sleeve structure, the outer diameter of the planar coil 5 is smaller than the inner diameter of the inner mounting sleeve 6, so that the receiving device can be directly embedded in the inner transmitting device from the open end of the inner mounting sleeve 6, and the brush assembly 12 and the conductive slip ring cooperate with each other to form a sliding contact energy transmission. At the same time, wireless signal transmission is realized through the planar coil 5 arranged on the inner end face of the tube bottom 3, and wireless energy transmission is realized by using the spiral coil 8 arranged on the side of the tube wall. Under the action of the annular planar magnetic core 4 and the annular cylindrical magnetic core 7, the propagation direction of the energy field and the signal field can be effectively controlled, and the influence of the magnetic field on other external electronic devices can be reduced. The entire product has a compact structure and is easy to install. In combination with the corresponding wireless energy signal synchronous receiving device, it can effectively realize the wireless energy and signal synchronous transmission of the rotating structure.

[0035] In summary, the nested multi-channel wireless energy signal synchronous transmission mechanism with brushes proposed in the present invention can be used in the wireless energy signal synchronous transmission system of the rotating structure. The product has a compact structure and is easy to install. The energy and signal coils are arranged in an interlaced manner and operate at different resonant frequencies, which can effectively reduce the mutual influence between the two. At the same time, the brush structure is configured and can be used in the slip ring structure to realize sliding contact power transmission.

[0036] In addition, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions corresponding to the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. Nested multi-channel wireless energy signal synchronous transmission mechanism with brushes, characterized by: It comprises a cylindrical structure that can be sleeved on a rotating shaft (10), a planar coil (5) is arranged on the bottom (3) of the cylindrical structure, a spiral coil (8) is arranged on the wall of the cylindrical structure, the planar coil (5) is used to connect a signal transmission circuit to realize wireless signal transmission, the spiral coil (8) is used to connect an energy transmission circuit to realize wireless energy transmission, and a brush assembly (12) is connected above the cylindrical structure through a mounting structure (11), and the brush assembly (12) is used to connect a conductive slip ring to realize sliding contact type power transmission; An inner layer mounting tube (6) is detachably connected to the bottom of the tube (3), the spiral coil (8) is wound on the outside of the inner layer mounting tube (6), an annular columnar magnetic core (7) is sleeved on the outside of the spiral coil (8), and an outer layer mounting tube (9) is sleeved on the outside of the annular columnar magnetic core (7), the inner layer mounting tube (6) and the outer layer mounting tube (9) are both connected to the bottom of the tube (3) by flanges, and an annular planar magnetic core (4) is also provided between the bottom of the tube (3) and the planar coil (5); The mounting structure (11) comprises a bottom plate (1) arranged below the bottom of the cylinder (3), a circuit mounting cavity being reserved between the bottom plate (1) and the bottom of the cylinder (3), a top plate (16) for mounting the support body (13) being supported above the bottom plate (1) by a frame (15), and an outer protective shell being further arranged between the top plate (16) and the bottom plate (1); A wiring port is also provided on the side wall of the top plate (16), and connection lines related to the circuit mounting plate (2) and the brush assembly (12) are led out through the wiring port to be connected to the outside.

2. The nested multi-channel wireless energy signal synchronous transmission mechanism with brushes according to claim 1, characterized in that: The brush assemblies (12) are multiple in number and are evenly distributed around the axial direction of the rotating shaft (10).

3. The nested multi-channel wireless energy signal synchronous transmission mechanism with brushes according to claim 1 or 2, characterized in that: The brush assembly (12) comprises a support body (13) extending along the length direction of the rotating shaft (10), and a plurality of brush pieces (14) are distributed on the support body (13) at equal intervals.

4. The nested multi-channel wireless energy signal synchronous transmission mechanism with brushes according to claim 1, characterized in that: The signal transmitting circuit is arranged on the board surface of the barrel bottom (3), and the energy transmitting circuit is arranged on the circuit mounting board (2). The circuit mounting board (2) is arranged along the length direction of the circuit mounting cavity.

5. The nested multi-channel wireless energy signal synchronous transmission mechanism with brushes according to claim 4, characterized in that: One end of the cylindrical structure is open, and the cross section of the port is circular. A shaft hole for the rotating shaft (10) to pass through is reserved on the bottom (3) of the cylindrical structure, the bottom plate (1) and the top plate (16).

6. The nested multi-channel wireless energy signal synchronous transmission mechanism with brushes according to claim 1, characterized in that: The planar coil (5) and the spiral coil (8) are both wound using Litz wire.

7. The nested multi-channel wireless energy signal synchronous transmission mechanism with brushes according to claim 6, characterized in that: The inner layer mounting cylinder (6) is made of magnetically permeable material.

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