Electric power and information transmission device and wind turbine generator system

Abstract

The present application relates to a kind of electric energy and information transmission device, including base body, including rotating member and fixed member being arranged coaxially and being capable of relative rotation with each other;Multiple sets of electrical contact pairs are spaced along the axial direction of base body, and each set of electrical contact pairs includes conductive ring and current collection assembly, the conductive ring is arranged in rotating member and is synchronous with rotating member rotation, and current collection assembly is arranged in fixed member and is in electrical contact with conductive ring and is slidably engaged with each other;Wherein, along the axial direction, the voltage resistance level of multiple sets of electrical contact pairs gradually increases.The electric energy and information transmission device and wind turbine provided by the embodiment of the present application can meet the transmission of electric energy and information data, and the cost is low and the reliability is high.

Description

Technical Field

[0001] This invention relates to the field of wind power technology, and in particular to an electrical energy and information transmission device and a wind turbine generator set. Background Technology

[0002] In modern industry, electrical energy and information transmission devices are widely used. Taking wind turbine generators as an example, the nacelle and tower need to achieve yaw function. In this process, the nacelle needs both a stable power supply and to ensure the accurate transmission of various types of information.

[0003] Currently, existing technologies separate power and information transmission devices. This separation significantly increases system space requirements, making equipment layout more complex and potentially limiting integration. Simultaneously, the increased complexity of the equipment and the proliferation of independent transmission components raise procurement costs. Furthermore, facing the trend towards high-capacity transmission, existing transmission devices are experiencing reduced reliability in both power and information transmission processes. Summary of the Invention

[0004] This invention provides an electrical energy and information transmission device and a wind turbine generator set, which can meet the requirements of electrical energy and information data transmission, and are low in cost and highly reliable.

[0005] On one hand, according to an embodiment of the present invention, an electrical energy and information transmission device is proposed, comprising: a substrate, including a rotating component and a fixed component coaxially arranged and rotatable relative to each other; multiple sets of electrical contact pairs, spaced apart along the axial direction of the substrate, each set of electrical contact pairs including a conductive ring and a current collector assembly, the conductive ring being disposed on the rotating component and rotating synchronously with the rotating component, the current collector assembly being disposed on the fixed component, the current collector assembly being in electrical contact with the conductive ring and slidingly engaged with each other; wherein, along the axial direction, the withstand voltage level of the multiple sets of electrical contact pairs gradually increases.

[0006] According to one aspect of the present invention, a plurality of electrical contact pairs include a first electrical contact pair and a second electrical contact pair. The first electrical contact pair is disposed on one side of the second electrical contact pair in the axial direction. An isolation member is disposed between the first electrical contact pair and the second electrical contact pair. The isolation member is connected to a fixing member. The first electrical contact pair is used for electrical power transmission, and the second electrical contact pair is used for information transmission.

[0007] According to one aspect of the present invention, a first electrical contact pair includes a first conductive ring, a second electrical contact pair includes a second conductive ring, wherein the height of the first conductive ring is greater than the height of the second conductive ring along the axial direction; and / or, the radial thickness of the first conductive ring is greater than the radial thickness of the second conductive ring along the radial direction.

[0008] According to one aspect of the present invention, a first electrical contact pair includes a first current collector assembly that is in electrical contact with a first conductive ring, and a second electrical contact pair includes a second current collector assembly that is in electrical contact with a second conductive ring. The first conductive ring is provided with a first conductive groove recessed in its own radial direction, and the first current collector assembly extends into the first conductive groove. The second conductive ring is provided with a second conductive groove recessed in its own radial direction, and the second current collector assembly extends into the second conductive groove. The groove depth of the first conductive groove is greater than the groove depth of the second conductive groove.

[0009] According to one aspect of the present invention, the rotating component includes a rotating shaft, a pull rod assembly, a connecting terminal, and an end plate. The pull rod assemblies are multiple and spaced apart around the axis of the base. One end of each pull rod assembly is connected to the rotating shaft via the end plate. A first electrical contact pair includes a first conductive ring and a first current collector that are electrically in contact with each other. A second electrical contact pair includes a second conductive ring and a second current collector that are electrically in contact with each other. Each first conductive ring is insulated from each other via the pull rod assembly. Each second conductive ring is insulated from the rotating shaft. Each first conductive ring is connected to at least one connecting terminal.

[0010] According to one aspect of the present invention, the first electrical contact pair includes a first conductive ring and a first current collector assembly that are electrically in contact with each other. The first current collector assembly includes a brush component and a current collector assembly. The brush component includes two or more brush units distributed along the axial direction. Each brush unit includes a conductive plate and a plurality of conductive brushes that are electrically in contact with the conductive plate. The plurality of conductive brushes are spaced apart around the axis of the substrate and are electrically in contact with the first conductive ring respectively. The conductive plate is connected to the current collector assembly.

[0011] According to one aspect of the present invention, brush components are arranged in pairs, and the paired brush components are symmetrically distributed on both sides of a first conductive ring along a first direction. The busbar component includes a pair of busbars, which are symmetrically distributed on both sides of a collector ring along a second direction. One end of each busbar is electrically connected to each conductive plate of one of the paired brush components, and the other end is electrically connected to each conductive plate of the other of the paired brush components. The first direction and the second direction are intersecting.

[0012] According to one aspect of the present invention, the second electrical contact pair includes a second conductive ring and a second current collector assembly. The second conductive ring is provided with a plurality of second conductive grooves distributed along the axial direction. The second current collector assembly includes a mounting frame and a plurality of conductive groups distributed along the axial direction. Each conductive group includes a pair of conductive springs. One end of the pair of conductive springs is arranged to converge toward each other and is respectively connected to the mounting frame. The other end of the pair of conductive springs is arranged to disperse away from each other and abuts against the groove wall of the same second conductive groove.

[0013] According to one aspect of the present invention, the positive pressure between the conductive spring and the groove wall along the radial direction of the second conductive ring is greater than 25 kPa, and a grinding chip receiving groove is provided on the side of the second conductive ring away from its own inner wall surface.

[0014] According to one aspect of the present invention, the substrate further includes a thermal management component, a fixed member and a rotating member enclosing a closed cavity, each electrical contact pair being located within the closed cavity, and the fixed member having a thermal management component disposed on at least one side in a first direction, the thermal management component being connected to the closed cavity.

[0015] According to one aspect of the present invention, a thermal management component includes a conductor, a first heat exchanger, a second heat exchanger, and a power source. A mounting port matching the shape of the conductor is provided on a fixing member. The conductor closes the mounting port and is connected to the fixing member. The first heat exchanger is disposed on the side of the conductor facing the closed chamber and surrounds the conductor to form a first flow channel communicating with the closed chamber. The second heat exchanger is disposed on the side of the conductor away from the closed chamber and surrounds the conductor to form a second flow channel communicating with the external space. A power source is provided for each of the first and second flow channels.

[0016] According to one aspect of the present invention, the power and information transmission device further includes a yaw counter, the yaw counter including a rotor and a stator that are rotatably coupled, the rotor being coaxially arranged and connected to a rotating component, and the stator being connected to a fixed component.

[0017] In another aspect, according to an embodiment of the present invention, a wind turbine generator set is provided, including a tower; a nacelle disposed on the tower and rotatably engaged with the tower; and the aforementioned power and information transmission device, wherein one of the rotating component and the fixed component is connected to the nacelle and the other is connected to the tower.

[0018] According to embodiments of the present invention, an electrical energy and information transmission device and a wind turbine generator set are provided. The electrical energy and information transmission device includes a base and multiple sets of electrical contact pairs. The base includes a rotating component and a fixed component coaxially arranged and rotatable relative to each other. The multiple sets of electrical contact pairs are spaced apart along the axial direction of the base. The conductive ring of each set of electrical contact pairs is connected to the rotating component and can rotate synchronously with the rotating component. The current collector is disposed on the fixed component and can make electrical contact with and slide with the conductive ring. During operation, the rotating component can be connected to rotating structural components such as the nacelle, the nacelle cables can be electrically connected to the conductive ring, the fixed component can be connected to fixed structures such as the tower, and the tower cables can be electrically connected to the current collector. Since the withstand voltage level of the multiple sets of electrical contact pairs gradually increases along the axial direction of the base, the electrical contact pairs with higher withstand voltage levels can be used for transmitting electrical energy, and the electrical contact pairs with lower withstand voltage levels can be used for transmitting information data. The transmission device can simultaneously meet the transmission needs of electrical energy and information. Furthermore, each electrical contact pair shares the rotating component and the fixed component of the base, resulting in low cost and small space occupation. Meanwhile, along the axial direction, the withstand voltage levels of multiple sets of electrical contact pairs gradually increase, which can reduce the impact of electrical contact pairs with higher withstand voltage levels on electrical contact pairs with lower withstand voltage levels, and ensure the reliability of electrical energy and information transmission devices. Attached Figure Description

[0019] The features, advantages and technical effects of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of a wind turbine generator set according to an embodiment of the present invention;

[0021] Figure 2 This is an isometric view of an embodiment of an electrical energy and information transmission device of the present invention;

[0022] Figure 3 This is a partial structural schematic diagram of an electrical energy and information transmission device according to an embodiment of the present invention;

[0023] Figure 4 This is a partial structural schematic diagram of an electrical energy and information transmission device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the first electrical contact pair according to an embodiment of the present invention;

[0025] Figure 6 This is an isometric view of the first electrical contact pair according to an embodiment of the present invention;

[0026] Figure 7 This is a partial structural schematic diagram of an electrical energy and information transmission device according to another embodiment of the present invention;

[0027] Figure 8This is a schematic diagram of the structure of the second electrical contact pair according to an embodiment of the present invention;

[0028] Figure 9 This is an isometric view of a heat exchange component according to an embodiment of the present invention from one perspective;

[0029] Figure 10 This is an isometric view of a heat exchange component according to an embodiment of the present invention from another perspective;

[0030] Figure 11 This is a schematic diagram of the cooperation between the yaw counter, the fixed flange, and the long rod according to an embodiment of the present invention.

[0031] Marker explanation:

[0032] 100. Electrical energy and information transmission devices;

[0033] 10. Matrix;

[0034] 11. Rotating component; 111. Tie rod assembly; 112. Connecting terminal; 113. End plate; 114. Rotating shaft;

[0035] 12. Fixture; 121. Cover; 122. Linkage assembly; 13. Enclosed chamber;

[0036] 20. Electrical contact pair; 20a. First electrical contact pair; 20b. Second electrical contact pair;

[0037] 21. Conductive ring; 21a. First conductive ring; 21b. Second conductive ring;

[0038] 22. Current collection component;

[0039] 22a, First current collector assembly; 221, Brush assembly; 2211, Brush unit; 2211a, Conductive plate; 2211b, Conductive brush; 222, Current collector assembly; 2221, Busbar;

[0040] 22b. Second current collector assembly; 223. Mounting bracket; 224. Conductor assembly; 2241. Conductive spring; 2245. Slag receiving groove.

[0041] 30. Isolation components;

[0042] 40. Thermal management components;

[0043] 41. Conductor; 42. First heat exchanger; 43. Second heat exchanger; 44. Power source; 45. First flow channel; 46. Second flow channel;

[0044] 50. Yaw counter; 51. Rotor; 52. Stator;

[0045] 60. Fixed flange; 70. Long rod;

[0046] X, axial direction; M, primary direction; N, secondary direction;

[0047] 200. Nacelle; 300. Generator; 400. Impeller; 410. Hub; 420. Blade; 500. Tower; 600. Functional components.

[0048] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0049] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. In the accompanying drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the invention; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0050] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the power and information transmission device and wind turbine generator set of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0051] like Figure 1 As shown, one embodiment of this application provides a wind turbine generator set, including a tower 500, a nacelle 200, an rotor 400, and functional components 600. The tower 500 is connected to the wind turbine foundation, the nacelle 200 is disposed on the tower 500, and the rotor 400 is disposed on the nacelle 200 and can rotate relative to the nacelle 200 under the action of wind. The rotor 400 includes a hub 410 and blades 420, with the blades 420 connected to the hub 410. In some optional embodiments, the functional components 600 may include at least one of a generator 300, a transformer, and a converter. The generator 300 may be connected between the rotor 400 and the base of the nacelle 200, and the rotor 400 can drive the generator 300 to work under the action of wind, thereby converting wind energy into electrical energy.

[0052] During the operation of the wind turbine generator set, the nacelle 200 and the tower 500 need to achieve yaw function. In this process, the nacelle 200 needs a stable power supply and also needs to ensure the accurate transmission of various information. The cables of the nacelle 200 need to be connected to the cables of the tower 500 to realize the transmission of power and information.

[0053] With the rapid development of the wind power industry, wind turbines are moving towards larger sizes, especially those with a capacity of 8MW or more. In this process of increasing the size of wind turbines, the related technologies of yaw systems face many severe challenges.

[0054] Due to limitations in installation space and cost for wind turbine generators, the transmission cables for high-voltage control, safety chains, control signals, and data still rely on the traditional twisting and untwisting method. This traditional approach suffers from high costs associated with these transmission cables, and the complexity of twisting and untwisting also leads to inconvenient maintenance.

[0055] In summary, wind turbines urgently need a solution to overcome the current technological challenges in yaw power and information transmission. This solution should enable low-cost, space-saving, and multi-channel transmission cable design without twisting, thereby reducing costs and improving reliability.

[0056] like Figures 2 to 8 As shown, to this end, one embodiment of this application proposes an electrical energy and information transmission device 100, including a base 10 and multiple sets of electrical contact pairs 20. The base 10 includes a rotating member 11 and a fixed member 12 coaxially arranged and rotatably engaged. The multiple sets of electrical contact pairs 20 are distributed at intervals along the axial direction X of the base 10. Each set of electrical contact pairs 20 includes a conductive ring 21 and a current collector 22. The conductive ring 21 is disposed on the rotating member 11 and rotates synchronously with the rotating member 11. The current collector 22 is disposed on the fixed member 12. The current collector 22 is in electrical contact with the conductive ring 21 and is slidably engaged with each other. The withstand voltage level of the multiple sets of electrical contact pairs 20 gradually increases along the axial direction X.

[0057] The power and information transmission device 100 can be used for the transmission of power and signals between two sets of equipment rotating in opposite directions. Taking a wind turbine generator set as an example, it can be used to connect the cables of the nacelle 200 and the tower 500, ensuring a stable power supply and accurate transmission of various information while achieving yaw function between the nacelle 200 and the tower 500. The following will illustrate this with an example of the power and information transmission device 100 being used for the yaw function of a wind turbine generator set and its connection with the nacelle 200 and the tower 500.

[0058] The rotating component 11 of the base 10 is used to connect with rotating structural components such as the cabin 200. The rotating component 11 has multiple mounting positions for mounting electrical contact pairs 20. Each conductive ring 21 of the electrical contact pair 20 is mounted on the rotating component 11 and can rotate synchronously with the rotating component 11. The rotating component 11 can also be connected to cables within the cabin 200 to transmit electrical energy and information from the cables within the cabin 200 to the corresponding conductive ring 21 or to the corresponding components on the cabin.

[0059] The fastener 12 of the base 10 is used to connect to a fixed structural member such as the tower 500. The fastener 12 has multiple mounting positions for mounting the current collector 22. The current collector 22 of the electrical contact pair 20 is directly or indirectly mounted to the fastener 12.

[0060] The rotating member 11 and the fixed member 12 can be inserted into the interior of the other and have rotational freedom relative to each other. In order to better understand the power and information transmission device 100 provided in one embodiment of this application, the following will be illustrated by taking the example of the rotating member 11 being at least partially inserted into the interior of the fixed member 12 and having rotational freedom relative to the fixed member 12.

[0061] The axial direction X of the base 10 can be the height direction of the power and information transmission device 100, or it can be understood as the extension direction of the rotation axis of the rotating member 11 and the fixed member 12 rotating relative to each other.

[0062] The number of electrical contact pairs 20 can be two, three, or more. Multiple electrical contact pairs 20 are spaced apart along the axial direction X of the substrate 10.

[0063] The conductive ring 21 of each electrical contact pair 20 is disposed on the rotating member 11 and can be connected to the cables of the nacelle 200 through at least a portion of the rotating member 11, or can be directly connected to the cables of the nacelle 200. The current collector 22 of each electrical contact pair 20 is disposed on the fixing member 12 and can be connected to the cables of the tower 500 through at least a portion of the fixing member 12, or can be directly connected to the cables of the tower 500.

[0064] The conductive ring 21 of the electrical contact pair 20 can be annular, and optionally continuous annular. The current collector 22 can contact and slide with the conductive ring 21 through multi-point contact and sliding engagement to electrically connect with the conductive ring 21.

[0065] The withstand voltage rating of electrical contact pair 20 can be understood as the voltage range that electrical contact pair 20 can withstand under normal operating conditions without electrical breakdown or other faults.

[0066] To better understand, the following example illustrates the concept. For instance, the first set of electrical contact pairs 20, located at one end of the X-axis, has a withstand voltage range of 24V±5V and can be used to transmit low-voltage information signals; while the second set of electrical contact pairs 20, located at the other end of the X-axis, has a withstand voltage range of 1KV-1.5KV and can be used to transmit medium-voltage electrical energy. From the first set of electrical contact pairs 20 to the second set, the withstand voltage of each electrical contact pair 20 gradually increases.

[0067] Based on the actual operating requirements of the yaw system, the necessity of setting the withstand voltage level is further explained. For example: "During operation, the yaw system needs to transmit various types of signals and electrical energy. For instance, the low-voltage 24V signal is mainly used to transmit control information to ensure accurate control and status monitoring of the yaw system; therefore, a lower withstand voltage level for the corresponding electrical contact pair 20 is sufficient. However, the 1KV-1.5KV electrical energy is used to drive key equipment such as motors in the yaw system, requiring a higher withstand voltage capability to ensure the safety and stability of power transmission. This method of setting different withstand voltage levels for electrical contact pairs 20 along the axial direction X can efficiently and safely meet the complex power and information transmission needs of the yaw system."

[0068] Existing current collectors in yaw systems often employ a single voltage rating for the electrical contact pair 20, which fails to effectively differentiate between power and information transmission requirements, easily leading to signal interference and unstable power transmission. One embodiment of this application provides a power and information transmission device 100. During operation, the rotating shaft 114 can be connected to rotating structural components such as the nacelle 200. The cables of the nacelle 200 can be electrically connected to the conductive ring 21. The fixing component 12 can be connected to a fixed structure such as the tower 500. The cables of the tower 500 can be electrically connected to the current collector assembly 22. This allows the rotating component 11 to drive the conductive ring 21 to rotate with the nacelle 200 when the nacelle 200 rotates relative to the tower 500 and yaws. The conductive ring 21 slides and makes electrical contact with the corresponding current collector assembly 22, ensuring that the conductive ring 21 remains in electrical contact with the current collector assembly 22 located on the fixing component 12 during the rotation process. This guarantees the transmission of power and information and prevents cable twisting.

[0069] Because the voltage withstand levels of the multiple sets of electrical contact pairs 20 gradually increase along the axial direction X of the substrate 10, the electrical contact pairs 20 with higher voltage withstand levels can be used for transmitting electrical energy, while the electrical contact pairs 20 with lower voltage withstand levels can be used for transmitting information data. The transmission device can simultaneously meet the transmission needs of both electrical energy and information. Furthermore, each electrical contact pair 20 shares the rotating component 11 and the fixing component 12 of the substrate 10, resulting in low cost and small space occupation. Simultaneously, the gradual increase in voltage withstand levels along the axial direction X reduces the impact of the higher voltage withstand level electrical contact pairs 20 on the lower voltage withstand level electrical contact pairs 20, ensuring the reliability and stability of the electrical energy and information transmission device 100.

[0070] Continue reading Figures 2 to 8 As shown, in some optional embodiments, one embodiment of the present application provides an electrical power and information transmission device 100, which includes multiple sets of electrical contact pairs 20, including a first electrical contact pair 20a and a second electrical contact pair 20b. The first electrical contact pair 20a is disposed on one side of the second electrical contact pair 20b in the axial direction X. An isolation member 30 is disposed between the first electrical contact pair 20a and the second electrical contact pair 20b. The isolation member 30 is connected to the fixing member 12. The first electrical contact pair 20a is used for electrical power transmission, and the second electrical contact pair 20b is used for information transmission.

[0071] The number of first electrical contact pairs 20a can be one, two, three, or more. The number of second electrical contact pairs 20b can be one, two, three, or more.

[0072] Taking an example where there are three first electrical contact pairs 20a and three second electrical contact pairs 20b. The three first electrical contact pairs 20a can be arranged sequentially, and the three second electrical contact pairs 20b can be arranged sequentially. The three first electrical contact pairs 20a are located on one side of the three second electrical contact pairs 20b in the X-axis direction, that is, on the side of the third first electrical contact pair 20a that is away from the other two first electrical contact pairs 20a in the X-axis direction.

[0073] The isolation member 30 may have a through hole in the middle, and the rotating member 11 may be partially inserted into the through hole and have a clearance fit with the through hole to avoid interference between the rotating member 11 and the isolation member 30 during rotation.

[0074] The isolator 30 may include structures such as an isolator plate and an isolator membrane. The isolator 30 is located in the axial direction X between the first electrical contact pair 20a and the second electrical contact pair 20b to isolate the first electrical contact pair 20a and the second electrical contact pair 20b.

[0075] Optionally, the withstand voltage rating of the first electrical contact pair 20a is greater than that of the second electrical contact pair 20b.

[0076] Optionally, the power and information transmission device 100 is used to connect medium and low voltage cables in the cabin and tower. The voltage range of the medium voltage cable can be selected from 1KV to 35KV. The first electrical contact pair 20 can be used to connect with the medium voltage cable. The voltage range of the low voltage cable can be selected from less than 1KV. The second electrical contact pair 20b can be used to connect with the low voltage cable.

[0077] Optionally, the power and information transmission device 100 may be equipped with a stator adapter box, which may include terminal blocks for transmitting medium voltage and terminal blocks for transmitting low voltage, fiber optic connectors, leakage protection devices and accessories, etc.

[0078] Optionally, the power and information transmission device 100 may be equipped with a rotor adapter box, which may include terminal blocks for transmitting medium voltage and terminal blocks for transmitting low voltage, fiber optic connectors and accessories, etc.

[0079] Optionally, the fixing member 12 may include a plurality of housings 121 and a plurality of linkage assemblies 122 disposed within the housings 121. The plurality of linkage assemblies 122 may be spaced apart from each other and connected to the housings 121, and each linkage assembly 122 may extend along the axial direction X. The isolator 30 may be connected to at least one of the housings 121 and the linkage assemblies 122. A plurality of first current collectors 22a may be integrally connected to each other via the linkage assemblies 122 and fixed in relative position. A plurality of second current collectors 22b may be connected to at least one of the isolator 30, the linkage assemblies 122, and the housings 121 via other adapters.

[0080] One embodiment of this application provides an electrical energy and information transmission device 100. During electrical energy transmission, a strong electromagnetic field is generated, which may interfere with information transmission, leading to errors or instability. The above-described design effectively reduces electromagnetic interference from electrical energy transmission to information transmission, ensuring the accuracy and stability of information transmission. Furthermore, the electrical energy transmission section typically carries medium voltage and high current, and is separated from the information transmission section. This avoids safety accidents such as short circuits and leakage in the electrical energy transmission section due to malfunctions in the information transmission section or external factors, thus improving the overall system safety.

[0081] Meanwhile, the separate setup makes the structure of each part clearer. During maintenance and repair, staff can more easily locate and handle problems in the power transmission or information transmission sections, reducing maintenance time and costs, improving maintenance efficiency, and lowering maintenance difficulty. Furthermore, if one of the power transmission or information transmission sections malfunctions, because they are independently configured, it will not affect the normal operation of the other part, thereby enhancing the reliability of the entire yaw system and reducing the risk of the entire system being paralyzed due to a failure in one part.

[0082] Furthermore, the vertical partitioning can be flexibly arranged according to the spatial structure between the cabin 200 and the tower 500, making more rational use of the space for the power and information transmission device 100, which is conducive to the compact design of the entire yaw system and improves space utilization.

[0083] In some alternative embodiments, the first electrical contact pair 20a includes a first conductive ring 21a, the second electrical contact pair 20b includes a second conductive ring 21b, the height of the first conductive ring 21a may be greater than the height of the second conductive ring 21b along the axial direction X; and / or, the radial thickness of the first conductive ring 21a is greater than the radial thickness of the second conductive ring 21b along the radial direction of the first conductive ring 21a.

[0084] By implementing the above-mentioned design, insulation performance is improved, making insulation problems such as electrical breakdown more likely to occur during high-voltage transmission. Increasing the height and / or thickness of the first conductive ring 21a increases the insulation distance, improves insulation performance, reduces the risk of leakage and short circuits, and ensures the safe and stable operation of the power and information transmission device 100 under medium voltage. Furthermore, it reduces the electric field strength. According to the relationship between electric field strength, voltage, and distance, under the same voltage, increasing the thickness and / or height of the first conductive ring 21a reduces the electric field strength on its surface and inside. This helps reduce phenomena such as corona discharge, avoids electromagnetic interference to surrounding equipment and the environment, and also reduces damage to the conductive ring material caused by the electric field.

[0085] Simultaneously, it can reduce heat generation. During high-voltage transmission, the current is typically also large, and the resistance of the first conductive ring 21a generates heat. A thicker and / or taller first conductive ring 21a has a larger heat dissipation area and volume, which can better dissipate the generated heat, reduce the temperature of the first conductive ring 21a, improve its current-carrying capacity, reduce material aging and performance degradation caused by overheating, and extend the service life of the conductive ring. For the second conductive ring 21b, which transmits lower voltages, reducing its thickness can reduce weight and cost.

[0086] In some optional embodiments, one embodiment of the present application provides an electrical power and information transmission device 100, in which a first electrical contact pair 20a includes a first current collector 22a that is in electrical contact with a first conductive ring 21a, and a second electrical contact pair 20b includes a second current collector 22b that is in electrical contact with a second conductive ring 21b. The first conductive ring 21a is provided with a first conductive groove recessed in its own radial direction, and the first current collector 22a extends into the first conductive groove. The second conductive ring 21b is provided with a second conductive groove recessed in its own radial direction, and the second current collector 22b extends into the second conductive groove. The groove depth of the first conductive groove is greater than the groove depth of the second conductive groove.

[0087] The first conductive groove can extend along the circumference of the conductive ring 21 to form a complete ring structure. The number of the first conductive grooves can be one, two or more. When the number of the first conductive grooves is two or more, the two or more first conductive grooves are distributed at intervals in the axial direction X.

[0088] The cross-sectional shape of the first conductive groove in the circumferential direction of the conductive ring 21 can be V-shaped, U-shaped, etc.

[0089] The second conductive groove can extend along the circumference of the conductive ring 21 to form a complete ring structure. The number of the second conductive groove can be one, two or more. When the number of the second conductive groove is two or more, the two or more second conductive grooves are distributed at intervals in the axial direction X.

[0090] The cross-sectional shape of the second conductive groove in the circumferential direction of the conductive ring 21 can be V-shaped, U-shaped, etc.

[0091] The depth of the first conductive groove can be understood as the maximum depth of the radial indentation of the first conductive groove. The depth of the second conductive groove can be understood as the maximum depth of the radial indentation of the second conductive groove.

[0092] The first current collector 22a extends into the first conductive groove, contacts and slides against the groove wall of the first conductive groove, and the second current collector 22b extends into the second conductive groove, contacts and slides against the groove wall of the second conductive groove.

[0093] With the above configuration, high voltage is typically accompanied by high current. A deeper first conductive groove can accommodate thicker conductive material or more brushes, thereby increasing the conductive area, reducing current density, meeting the requirements of high current transmission, and reducing heat generation and energy loss. Furthermore, high voltage is prone to corona discharge during transmission, which leads to energy loss and electromagnetic interference. A deeper first conductive groove can make the electric field distribution more uniform, reducing the electric field strength on the electrode surface, thereby reducing corona discharge and improving system stability and efficiency. Moreover, a deeper first conductive groove provides more space for the installation and adjustment of components such as brushes, facilitating operation and maintenance.

[0094] Continue reading Figures 2 to 4As shown, in some optional embodiments, one embodiment of the present application provides an electrical power and information transmission device 100, in which the rotating component 11 includes a rotating shaft 114, a pull rod assembly 111, a connecting terminal 112, and an end plate 113. The pull rod assemblies 111 are multiple and spaced apart around the axis of the base 10. One end of each pull rod assembly 111 is connected to the rotating shaft 114 through the end plate 113. The first electrical contact pair 20a includes a first conductive ring 21a and a first current collector 22a that are electrically in contact with each other. The second electrical contact pair 20b includes a second conductive ring 21b and a second current collector 22b that are electrically in contact with each other. Each first conductive ring 21a is insulated from each other through the pull rod assembly 111. Each second conductive ring 21b is insulated from the rotating shaft 114. Each first conductive ring 21a is connected to at least one connecting terminal 112.

[0095] The rotating shaft 114 can be a hollow cylindrical structure, and the axial direction X of the base 10 can be understood as the axial direction X of the rotating shaft 114. One end of the rotating shaft 114 in the axial direction X can be connected to the end plate 113 by welding or bolting. Multiple first conductive rings 21a are spaced apart from each other in the axial direction X, and multiple tie rod assemblies 111 are arranged around the outer periphery of the rotating shaft 114. Each tie rod assembly 111 is inserted into each first conductive ring 21a and is insulated from each first conductive ring 21a to connect the first conductive rings 21a into a whole and keep them spaced at a fixed distance from each other. One end of each tie rod assembly 111 in the axial direction X is connected to the end plate 113 in the axial direction X by bolting or other means to form a whole, and then connected to the rotating shaft 114 through the end plate 113 and fixed in relative position.

[0096] The second conductive ring 21b is annular, and an insulating coating, insulating sleeve, or other structure can be fixedly provided on at least one of the second conductive ring 21b and the rotating shaft 114. The second conductive ring 21b is sleeved on the rotating shaft 114 and can be connected, fixed, and insulated from the rotating shaft 114 by means of bonding, interference fit, or other methods.

[0097] The end plate 113 may be provided with a fork or other structure. The fork or other structure can rotate with the cabin 200, thereby driving the end plate 113, the rotating shaft 114 and the first conductive ring 21a and the second conductive ring 21b connected thereto to rotate.

[0098] One embodiment of this application provides an electrical energy and information transmission device 100. With the above-described configuration, electrical energy transmission typically involves large currents and power. By connecting each first conductive ring 21a through the pull rod assembly 111, they can be stably connected together, so that the first conductive rings 21a maintain a stable positional relationship when rotating at high speed and bearing large electrical loads. This avoids displacement or damage to the collector rings due to centrifugal force, electromagnetic force, or other factors, thus ensuring the reliability of electrical energy transmission.

[0099] Furthermore, the tie rod assembly 111 provides a standardized connection method, facilitating the positioning and fixing of the first conductive ring 21a during installation, and also enabling the disassembly, replacement, and repair of individual first conductive rings 21a or the entire assembly during maintenance, thus improving installation and maintenance efficiency. Simultaneously, directly insulating the second conductive ring 21b onto the rotating shaft 114 eliminates the need for complex connection components, reducing the number of parts, simplifying the overall structure of the slip ring, and lowering manufacturing and installation costs. Since the rotating shaft 114 is typically a rotating component, directly connecting the second conductive ring 21b to it shortens the signal transmission path, reducing signal attenuation and distortion during transmission. Simultaneously, the insulated connection effectively isolates external electromagnetic interference, ensuring the accuracy and stability of information transmission. The arrangement of the second conductive ring 21b, forming an integral rotating component with the rotating shaft 114, reduces friction and rotational inertia in intermediate connection links, improving rotational flexibility and facilitating precise control and rapid response of the yaw system.

[0100] Continue reading Figures 3 to 6 As shown, in some optional embodiments, the power and information transmission device 100 provided in one embodiment of this application includes a first current collection component 22a comprising a brush component 221 and a current collection component 222. The brush component 221 includes two or more brush units 2211 distributed along the axial direction X. Each brush unit 2211 includes a conductive plate 2211a and a plurality of conductive brushes 2211b that are in electrical contact with the conductive plate 2211a. The plurality of conductive brushes 2211b are spaced apart around the axis of the substrate 10 and are in electrical contact with the first conductive ring 21a respectively. The conductive plate 2211a is connected to the current collection component 222.

[0101] Optionally, the number of brush units 2211 included in the brush component 221 can be two, three, or more. Multiple conductive plates 2211a of each brush unit 2211 can be spaced apart in the axial direction X, and multiple conductive brushes 2211b disposed on each conductive plate 2211a are in electrical contact with the conductive plate 2211a.

[0102] Each conductive brush 2211b of each brush unit 2211 can frictionally engage and electrically contact the same first conductive ring 21a. Each brush unit 2211 can be correspondingly arranged with one of the first conductive rings 21a.

[0103] One embodiment of this application provides an electrical power and information transmission device 100. Through the above-described arrangement, each conductive unit can be positioned towards areas such as heat dissipation vents, and the brush units 2211 are distributed at axial X-intervals, forming gaps between them. This improves heat dissipation, facilitates heat dissipation, and ensures safety and reliability. Furthermore, compared to the traditional yaw slip ring structure, this arrangement also saves materials, reduces costs, increases current carrying capacity, and enhances the safety of the electrical power and information transmission device 100.

[0104] Furthermore, by dividing the system into multiple brush units 2211, even if one brush unit 2211 fails, the other units can still operate normally, preventing the entire system from crashing and enhancing the system's fault tolerance. Maintenance and repair are also facilitated. The independent configuration of multiple brush units 2211 allows for more targeted handling of problematic units during maintenance and repair, eliminating the need for comprehensive inspection and repair of the entire circumference of the brushes, thus reducing maintenance costs and workload. Moreover, it minimizes interference from other components during maintenance, reducing the difficulty of maintenance and replacement.

[0105] Meanwhile, the above configuration can also optimize the current distribution. The multiple conductive brushes 2211b of each brush unit 2211 are in electrical contact with a first conductive ring 21a, and the multiple brush units 2211 are connected to the same busbar 2221. This can make the current distribution between the first conductive ring 21a and the busbar component 222 more uniform, reduce current concentration, reduce local overheating and other problems, and improve the efficiency and stability of the system.

[0106] Furthermore, the structure enhances adaptability. The number of brush units 2211 and the number of conductive brushes 2211b in each unit can be flexibly adjusted according to different current loads and voltage requirements, resulting in better adaptability and scalability. In contrast, the brush layout of traditional structures is relatively fixed, making adjustments difficult when facing different operating conditions.

[0107] In some optional embodiments, the power and information transmission device 100 provided in the above embodiments of this application, for each of the three phases of the cable used to transmit power, may include two or more brush units 2211 in its corresponding electrical contact pair 20. This arrangement ensures the transmission of a larger current.

[0108] In some optional embodiments, one embodiment of the present application provides an electrical energy and information transmission device 100, in which brush components 221 are arranged in pairs, the paired brush components 221 are symmetrically distributed on both sides of a first conductive ring 21a along a first direction M, and a bus component 222 includes a pair of busbars 2221, the paired busbars 2221 are symmetrically distributed on both sides of a collector ring along a second direction N, one end of each busbar 2221 is electrically connected to each conductive plate 2211a of one of the paired brush components 221, and the other end is electrically connected to each conductive plate 2211a of the other of the paired brush components 221, the first direction M and the second direction N are intersecting.

[0109] Both the first direction M and the second direction N can be radial directions of the first conductive ring 21a, and the first direction M and the second direction N are intersecting, with an intersection angle of 85°-95°. Optionally, the first direction M and the second direction N can be perpendicular to each other.

[0110] One embodiment of the power and information transmission device 100 provided in this application, through the above-described configuration, can increase the current transmission path, making the current more uniform and stable during transmission. The connection of multiple brush units 2211 to the busbar 2221 increases the contact area, reduces contact resistance, lowers the heat generated by resistance, and improves the reliability of conductivity.

[0111] Furthermore, the above configuration enhances system redundancy: the paired busbars 2221 provide a certain degree of redundancy, ensuring that if one busbar 2221 fails, the others can continue to operate, maintaining connection with external circuits and improving the overall system's fault tolerance and stability. Simultaneously, this configuration facilitates installation and maintenance, resulting in a clearer structure and easier operation and positioning during installation. This distribution also benefits maintenance personnel, making it easier to locate and troubleshoot faults, reducing maintenance costs and complexity.

[0112] In some alternative embodiments, the busbar component 222 may have a U-shaped structure, which can serve as a flow equalization function.

[0113] Please continue reading. Figure 7 , Figure 8 As shown, in some optional embodiments, the power and information transmission device 100 provided in one embodiment of this application includes a second current collector 22b comprising a mounting frame 223 and a plurality of conductive groups 224 distributed along the axial direction X. Each conductive group 224 includes a pair of conductive springs 2241. One end of the pair of conductive springs 2241 is arranged to converge toward each other and is respectively connected to the mounting frame 223. The other end of the pair of conductive springs 2241 is arranged to disperse away from each other and abuts against the wall of the same second conductive groove.

[0114] The orthographic projection of the paired conductive springs 2241 on the axial X-axis is in the shape of an "eight".

[0115] Cables in the cabin that connect to the second conductive ring 21b can be directly connected. For example, a clearance hole can be provided on the rotating shaft 114, allowing the cables of the cabin 200 to extend through the cavity of the rotating shaft 114 to the corresponding position of the second conductive ring 21b, and then pass through the clearance hole to connect to the terminal block on the second conductive ring 21b. Alternatively, a connection terminal 112 can be provided corresponding to the second conductive ring 21b. The connection terminal 112 can be rod-shaped or flexible cable-shaped, and can be connected to the corresponding second conductive ring 21b through the connection terminal 112 and the clearance hole, thus meeting the electrical connection requirements.

[0116] One embodiment of the power and information transmission device 100 provided in this application, through the above-described configuration, allows the conductive group 224 to better adapt to the shape of the second conductive ring 21b and tightly abut against the second conductive groove of the second conductive ring 21b. Even during equipment vibration or rotation, stable contact can be maintained, reducing information transmission interruptions or errors caused by poor contact. Furthermore, the structure of the mounting bracket 223 and the paired conductive springs 2241 is relatively fixed, ensuring a stable signal transmission path and effectively reducing interference and attenuation during signal transmission, thus improving the accuracy and reliability of information transmission. Simultaneously, the conductive springs 2241 are typically made of wear-resistant materials, resulting in slower wear and longer service life. This helps reduce the frequency of maintenance and replacement due to component wear, lowering equipment maintenance costs. Moreover, the combined structure of the conductive springs 2241 and the mounting bracket 223 is relatively compact, occupying little space, which is beneficial for the miniaturization design of the power and information transmission device 100. It can better adapt to some space-constrained devices or systems, occupying little space and having low cost.

[0117] Furthermore, this configuration is highly compatible, exhibiting good compatibility with different types and frequencies of information signals, and can adapt to various information transmission needs.

[0118] In some optional embodiments, the power and information transmission device 100 provided in one embodiment of this application has a positive pressure greater than 25 kPa between the conductive spring piece 2241 and the groove wall of the second conductive groove along the radial direction of the second conductive ring 21b, and a grinding debris receiving groove 2245 is provided on the side of the second conductive ring 21b away from its own inner wall surface.

[0119] The wear-receiving groove 2245 on the side of the second conductive ring 21b away from its own inner wall can be annular, and can be provided to protrude radially from the side of the second conductive ring 21b away from the rotating shaft 114. The wear-receiving groove 2245 can be made of insulating material.

[0120] An embodiment of the present application provides an electrical energy and information transmission device 100, which, through the above-described configuration, can effectively increase the point contact area between the conductive group 224 and the second conductive ring 21b, thereby reducing the resistance and making the contact resistance decrease by at least 50% compared with conventional methods.

[0121] It is understood that the above-described form of the first electrical contact pair 20a and the second electrical contact pair 20b is one of the optional embodiments of this application. In some embodiments, the first electrical contact pair 20a and the second electrical contact pair 20b may adopt other matching forms. For example, the first electrical contact pair 20a and the second electrical contact pair 20b may adopt the same structural form, such as both adopting the structural form of the first electrical contact pair 20a. The number of corresponding brush units 11 may be set according to the voltage requirements.

[0122] like Figure 9 as well as Figure 10 As shown, and continue to refer to Figures 2 to 8 In some optional embodiments, the power and information transmission device 100 provided in one embodiment of this application further includes a thermal management component 40 on the base 10, a fixed member 12 and a rotating member 11 enclosing a closed chamber 13, and each electrical contact pair 20 located in the closed chamber 13. The fixed member 12 is provided with the thermal management component 40 on at least one side in the first direction M, and the thermal management component 40 is connected to the closed chamber 13.

[0123] The fixing member 12 may include a cover 121, and the fixing member 12 and the rotating member 11 enclose an annular closed chamber 13. The thermal management component 40 may include air cooling, liquid cooling, etc., and air cooling is optional. The thermal management component 40 is disposed on the cover 121.

[0124] The first direction M can be the radial direction of the rotating shaft 114.

[0125] One embodiment of this application provides an electrical energy and information transmission device 100 that changes the traditional location of the thermal management component 40, thereby ensuring cooling and heat dissipation effects and improving its reliability.

[0126] In some optional embodiments, one embodiment of the present application provides an electrical energy and information transmission device 100, in which the thermal management component 40 includes a conductor 41, a first heat exchanger 42, a second heat exchanger 43, and a power source 44. The fixing member 12 is provided with an installation port that matches the shape of the conductor 41. The conductor 41 closes the installation port and is connected to the fixing member 12. The first heat exchanger 42 is disposed on the side of the conductor 41 facing the closed chamber 13 and surrounds the conductor 41 to form a first flow channel 45 communicating with the closed chamber 13. The second heat exchanger 43 is disposed on the side of the conductor 41 away from the closed chamber 13 and surrounds the conductor 41 to form a second flow channel 46 communicating with the external space. The first flow channel 45 and the second flow channel 46 are each provided with a power source 44.

[0127] The power source 44 may include at least one fan, and optionally include multiple fans arranged side by side.

[0128] The first flow channel 45 can be a single square channel or it can include multiple finned channels with partitions.

[0129] One embodiment of this application provides an electrical energy and information transmission device 100, in which the thermal management component 40 adopts the above-described structure, resulting in a fast heat exchange rate and good heat exchange effect. It can employ an air-to-air heat exchange system to achieve dust prevention.

[0130] Meanwhile, when the first electrical contact pair 20a includes a first conductive ring 21a and a first current collector assembly 22a that are electrically in contact with each other, the first current collector assembly 22a includes a brush component 221 and a current collector assembly 222. The brush component 221 includes two or more brush units 2211 distributed along the axial direction X. Each brush unit 2211 includes a conductive plate 2211a and a plurality of conductive brushes 2211b that are electrically in contact with the conductive plate 2211a. The plurality of conductive brushes 2211b are distributed at intervals around the axis of the substrate 10 and respectively When the conductive plate 2211a is electrically contacted with the first conductive ring 21a and connected to the busbar component 222, and the paired brush components 221 are symmetrically distributed on both sides of the first conductive ring 21a along the first direction M, thermal management components 40 can be provided on both sides of the fixing member 12 along the first direction M. Each brush component 221 located on one side of the first direction M is arranged opposite to one of the thermal management components 40, and each brush component 221 located on the other side of the first direction M is arranged opposite to the other thermal management component 40.

[0131] The aforementioned power and information transmission device 100 can be designed as a sealed structure. When the internal temperature reaches a set value, the fan corresponding to the first flow channel 45 inside starts, circulating hot air towards the conductor 41. Simultaneously, the power source 44 of the second flow channel 46 outside starts, carrying away the heat from the conductor 41 that has been heated by the hot air. This results in good heat exchange, which is highly advantageous for the unit at the Shagohuang large-scale base. Furthermore, the corresponding distribution pattern of the aforementioned thermal management component 40 and the first current collector assembly 22a, including the brush component 221, allows for forced heat dissipation of the internal components through the thermal management components 40 on both sides. Compared to the traditional one-sided open louvered heat dissipation method, the technical solution provided in this application has better heat dissipation and sealing effects, and can meet the high-voltage, high-heat-generating operating conditions of this application, with high reliability.

[0132] Meanwhile, the above configuration can enhance system redundancy: the paired thermal management components 40 provide a certain degree of redundancy. When one thermal management component 40 fails, the other thermal management component 40 can still continue to work, ensuring the heat dissipation system and improving the stability of the entire system.

[0133] like Figure 2 , Figure 3 as well as Figure 11 As shown, in some optional embodiments, one embodiment of the present application provides an electrical energy and information transmission device 100, which further includes a yaw counter 50. The yaw counter 50 includes a rotor 51 and a stator 52 that are rotatably coupled. The rotor 51 is coaxially arranged and connected to the rotating member 11, and the stator 52 is connected to a fixed connection.

[0134] The rotor 51 can be connected to at least one of the rotating shaft 114 and the end plate 113 of the rotating component 11 by means of fasteners or the like. The stator 52 can be fixed to the fixing component 12 directly or through the fixing flange 60 and the extension rod 70, and can optionally be fixed to the cover 121 of the fixing component 12. The extension rod 70 can be inserted into the cavity of the rotating shaft 114 and extend from the bottom of the rotating shaft 114 to connect with the cover 121 of the fixing component 12.

[0135] Existing technologies require a separate yaw encoder, which is inconvenient for installation and counting, and also results in low counting accuracy. However, the transmission device provided in one embodiment of this application, through the aforementioned setup, integrates yaw counting functionality. It directly feeds back the rotation angle of the nacelle 200 using a yaw counting code disk, thus accurately providing feedback on the position of the nacelle 200 when the wind turbine yaws. This position signal is then fed back to the wind turbine main control system, resulting in high counting accuracy.

[0136] The power and information transmission device 100 provided in one embodiment of this application, in addition to the advantages mentioned above, can also be modularly constructed, enabling modular and separate installation, which is easy to install in confined spaces and differs significantly from traditional integrated structures. Furthermore, it can operate at low speeds, eliminating concerns about electrical contact wear. The conductive brush 2211b and conductive ring 21 apply corresponding pressure through the elasticity of the rotor 51 side, ensuring reliable contact.

[0137] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrical energy and information transmission device, characterized in that, include: The base (10) includes a rotating component (11) that is coaxially arranged and can rotate relative to each other, and a fixing component (12); Multiple sets of electrical contact pairs (20) are distributed at intervals along the axial (X) direction of the substrate (10). Each set of electrical contact pairs (20) includes a conductive ring (21) and a current collector assembly (22). The conductive ring (21) is disposed on the rotating member (11) and rotates synchronously with the rotating member (11). The current collector assembly (22) is disposed on the fixed member (12). The current collector assembly (22) is in electrical contact with the conductive ring (21) and slides with each other. Along the axial direction (X), the withstand voltage levels of the multiple sets of electrical contact pairs (20) gradually increase.

2. The power and information transmission device according to claim 1, characterized in that, The plurality of electrical contact pairs (20) include a first electrical contact pair (20a) and a second electrical contact pair (20b). The first electrical contact pair (20a) is disposed on one side of the second electrical contact pair (20b) in the axial direction (X). An isolation member (30) is disposed between the first electrical contact pair (20a) and the second electrical contact pair (20b). The isolation member (30) is connected to the fixing member (12). The first electrical contact pair (20a) is used for power transmission, and the second electrical contact pair (20b) is used for information transmission.

3. The power and information transmission device according to claim 2, characterized in that, The first electrical contact pair (20a) includes a first conductive ring (21a), and the second electrical contact pair (20b) includes a second conductive ring (21b). Along the axial direction (X), the height of the first conductive ring (21a) is greater than the height of the second conductive ring (21b). And / or, along the radial direction of the first conductive ring (21a), the radial thickness of the first conductive ring (21a) is greater than the radial thickness of the second conductive ring (21b).

4. The power and information transmission device according to claim 2, characterized in that, The rotating component (11) includes a rotating shaft (114), a pull rod assembly (111), a connecting terminal (112), and an end plate (113). There are multiple pull rod assemblies (111) and they are spaced apart around the axis of the base (10). One end of each pull rod assembly (111) is connected to the rotating shaft (114) through the end plate (113). The first electrical contact pair (20a) includes a first conductive ring (21a) and a first current collector assembly (22a) that are electrically in contact with each other. The second electrical contact pair (20b) includes a second conductive ring (21b) and a second current collector assembly (22b) that are electrically in contact with each other. Each first conductive ring (21a) is insulated from each other through the pull rod assembly (111). Each second conductive ring (21b) is insulated from the rotating shaft (114). Each first conductive ring (21a) is connected to at least one of the connecting terminals (112).

5. The power and information transmission device according to claim 2, characterized in that, The first electrical contact pair (20a) includes a first conductive ring (21a) and a first current collector assembly (22a) that are electrically in contact with each other. The first current collector assembly (22a) includes a brush component (221) and a current collector assembly (222). The brush component (221) includes two or more brush units (2211) distributed along the axial direction (X). Each brush unit (2211) includes a conductive plate (2211a) and a plurality of conductive brushes (2211b) that are electrically in contact with the conductive plate (2211a). The plurality of conductive brushes (2211b) are spaced apart around the axis of the substrate (10) and are electrically in contact with the first conductive ring (21a) respectively. The conductive plate (2211a) is connected to the current collector assembly (222).

6. The power and information transmission device according to claim 5, characterized in that, The brush components (221) are arranged in pairs, and the paired brush components (221) are symmetrically distributed on both sides of the first conductive ring (21a) along a first direction (M). The bus component (222) includes a pair of busbars (2221), and the paired busbars (2221) are symmetrically distributed on both sides of the first conductive ring (21a) along a second direction (N). One end of each busbar (2221) is electrically connected to each of the conductive plates (2211a) of one of the paired brush components (221), and the other end is electrically connected to each of the conductive plates (2211a) of the other of the paired brush components (221). The first direction (M) and the second direction (N) are intersecting.

7. The power and information transmission device according to claim 2, characterized in that, The second electrical contact pair (20b) includes a second conductive ring (21b) and a second current collector assembly (22b). The second conductive ring (21b) is provided with a plurality of second conductive grooves distributed along the axial direction (X). The second current collector assembly (22b) includes a mounting frame (223) and a plurality of conductive groups (224) distributed along the axial direction (X). Each conductive group (224) includes a pair of conductive springs (2241). One end of the pair of conductive springs (2241) is arranged to converge toward each other and is respectively connected to the mounting frame (223). The other end of the pair of conductive springs (2241) is arranged to disperse away from each other and abuts against the groove wall of the same second conductive groove.

8. The electrical energy and information transmission device according to any one of claims 1 to 7, characterized in that, The substrate (10) further includes a thermal management component (40). The fixing member (12) and the rotating member (11) enclose a closed chamber (13). Each electrical contact pair (20) is located in the closed chamber (13). The fixing member (12) is provided with the thermal management component (40) on at least one side in the first direction (M). The thermal management component (40) is connected to the closed chamber (13).

9. The power and information transmission device according to claim 8, characterized in that, The thermal management component (40) includes a conductor (41), a first heat exchanger (42), a second heat exchanger (43), and a power source (44). The fixing member (12) is provided with an installation port that matches the shape of the conductor (41). The conductor (41) closes the installation port and is connected to the fixing member (12). The first heat exchanger (42) is located on the side of the conductor (41) facing the closed chamber (13) and is surrounded by the conductor (41) to form a first flow channel (45) communicating with the closed chamber (13). The second heat exchanger (43) is located on the side of the conductor (41) away from the closed chamber (13) and is surrounded by the conductor (41) to form a second flow channel (46) communicating with the external space. The power source (44) is provided on both the first flow channel (45) and the second flow channel (46).

10. The electrical energy and information transmission device according to any one of claims 1 to 7, characterized in that, The power and information transmission device (100) further includes a yaw counter (50), which includes a rotor (51) and a stator (52) that are rotatably coupled. The rotor (51) is coaxially arranged and connected with the rotating component (11), and the stator (52) is connected with the fixed component (12).

11. A wind turbine generator set, characterized in that, include Tower (500); The nacelle (200) is disposed on the tower (500) and rotates with the tower (500); In the power and information transmission device (100) as described in any one of claims 1 to 10, one of the rotating member (11) and the fixing member (12) is connected to the nacelle (200) and the other is connected to the tower (500).

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