Thermal control device of high-power wireless energy transmission driving mechanism

Abstract

The invention provides a thermal control device for a high-power wireless energy transmission driving mechanism. The thermal control device comprises a wireless driving mechanism, a heat dissipation plate, a heat pipe, a heat expansion plate, a heat conduction filler and a thermal control coating, the wireless driving mechanism comprises two high-heat-flux heat sources, namely a static coil and a rotating coil; the rotating coil is mounted on the insulating mounting plate, the insulating mounting plate is mounted on the magnetic conductive material, the magnetic conductive material is mounted on the rotating end cover, and the heat pipe is arranged on the rotating end cover to transmit heat to the heat dissipation plate on the reverse side of the solar panel; the static coil is mounted on the static end cover through an insulating mounting plate and a magnetic conductive material, and a heat pipe is arranged on the static end cover to transmit heat to the heat dissipation plate on the nightside; heat is mainly radiated to a cold space after reaching a radiating surface from the coil through the insulating mounting plate, the magnetic conductive material, the end cover and the heat pipe. The invention aims to solve the design problem of a high-power wireless energy driving mechanism of a satellite or a space station, and provides a design basis for solving the temperature control of a wireless energy transmission driving mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of spacecraft thermal control, and in particular to a thermal control device for a high-power wireless energy transmission drive mechanism. Background Art

[0002] High-power drive mechanisms in space are key components for power transmission and solar orientation on large-platform satellites or space station sails. On the one hand, the ever-increasing demands for energy transmission power and driving torque make it difficult to utilize existing drive mechanism technologies. On the other hand, traditional contact-based drive mechanisms, due to issues such as mechanical wear and space discharge, are increasingly unable to meet the long life and reliability requirements of current satellites and space stations. Therefore, functional enhancements and technological innovations in existing drive mechanism technologies are currently a major technical challenge. In recent years, wireless drive mechanisms developed using contactless electromagnetic coupling wireless power transmission technology have been able to effectively overcome these shortcomings and offer promising application prospects.

[0003] Wireless drive mechanisms rely on coils on either side to resonate and create a magnetic field to transmit electrical energy. This energy is lost during transmission, generating high-density heat flux between the coils. If this heat is not dissipated promptly, the internal temperature of the drive mechanism could rise rapidly, exceeding the allowable temperature of the materials and causing the drive mechanism to fail, potentially triggering an energy crisis for the satellite or space station. Therefore, wireless drive mechanisms must be designed with optimized thermal control.

[0004] After searching the prior art, Dai Fei et al. disclosed a design of a space-open heat-dissipating electric transmission drive mechanism in a Chinese patent application with the publication number CN106533051A. The drive mechanism includes an electric transmission system, a heat dissipation system, and a drive system. In order to dissipate the high-power and relatively concentrated heat generated by the conductive slip rings and stepper motors in the drive mechanism, the heat dissipation system designed in the mechanism includes heat dissipation ribs and shell ribs, which transfer heat to the outside of the drive mechanism through heat conduction and heat radiation, thereby controlling the overall temperature level of the drive mechanism and ensuring the safe flight of the aircraft in space. However, the design of this open drive mechanism is still a traditional drive mechanism design, which is not suitable for high-power energy transmission, and there is a significant risk of being stuck by unnecessary objects in space, resulting in load failure.

[0005] After searching the prior art, Jia Haipeng et al. disclosed a design for a high-power conductive rotary joint in space based on electromagnetic coupling wireless energy transmission in Chinese Patent Application Publication No. CN104158478A. This rotary joint structure includes a wireless power transmission mechanism and a drive mechanism. It uses non-contact electromagnetic coupling wireless power technology to transmit high power, which to a certain extent overcomes the problems of local overheating and secondary discharge caused by the use of slip ring contact. However, its signal transmission still uses a conductive slip ring form, making the structural design relatively complex. Therefore, when high power is transmitted, local overheating of the electromagnetic coil and signal transmission slip ring is still unavoidable, and no reasonable heat dissipation measures have been designed, limiting its application in spacecraft. Xia Xiaodong et al. disclosed a spatial drive mechanism based on loosely coupled transformer wireless energy transmission in Chinese Patent Application Publication No. CN105529986A. This structure optimizes the structural design of Jia Haipeng et al., using a wireless communication module instead of a conductive slip ring to transmit signals, thereby improving the service life and reliability of the spatial drive mechanism.

[0006] After searching the prior art, Xu Zhonglin et al., in their Chinese patent application publication number CN103448924A, disclosed a mechanical-thermal integration device for a high-power solar panel drive mechanism for satellites. This device utilizes a flange integrated with the satellite drive mechanism, externally attached heat pipes, heat expansion plates, thermally conductive fillers, and heat sinks to design a rational heat transfer path, dissipating heat from the drive mechanism to a cold space. However, the patent does not explain how heat from the drive mechanism is transferred to the flange, and the effectiveness of this thermal control method for high-power wireless energy transmission drive mechanisms requires further verification.

[0007] After searching existing literature, Wang Yan et al. from the Shanghai Satellite Engineering Institute studied the drive mechanism of a geostationary orbit satellite in the paper "Research on Thermal Design and Temperature Distribution of SADA in High-Temperature Conditions" (Spacecraft Environmental Engineering, 2017, 34(5): 490-494). They obtained a detailed temperature distribution of the drive mechanism through experimental and simulation methods, thereby obtaining the location of the highest temperature point, the circumferential and axial temperature difference levels at both ends of the shaft system, the temperature levels of the slip ring and brush assembly, and the shell. The simulation results were compared with the experimental results to verify the rationality and correctness of the simulation model, which can provide a reference for the thermal design of the subsequent wireless energy transmission drive mechanism.

[0008] Therefore, it is necessary to propose a new technical solution to improve the above technical problems. Summary of the Invention

[0009] In view of the defects in the prior art, the purpose of the present invention is to provide a thermal control device for a high-power wireless energy transmission drive mechanism.

[0010] According to the present invention, a high-power wireless energy transmission drive mechanism thermal control device includes: a solar panel, a heat dissipation plate, a solar panel tripod, a heat pipe, a wireless drive mechanism, a heat expansion plate and a drive mechanism mounting plate;

[0011] The heat dissipation plate includes a first heat dissipation plate and a second heat dissipation plate. The first heat dissipation plate is arranged on the solar sail panel. A plurality of heat pipes are arranged on the heat dissipation plate. One end of the heat pipe is arranged on the heat dissipation plate, and the other end is respectively arranged on the stationary end cover and the rotating end cover of the wireless drive mechanism. The wireless drive mechanism is arranged between the first heat dissipation plate and the second heat dissipation plate. The solar sail panel tripod is arranged between the solar sail panel and the wireless drive mechanism. A heat expansion plate is arranged between the wireless drive mechanism and the drive mechanism mounting plate.

[0012] Preferably, the wireless drive mechanism includes a drive motor, a rotating shaft, a coil, an insulating mounting plate, a drive mechanism bracket, a drive mechanism housing, a magnetic conductive material, a stationary end cover, a connecting flange and a rotating end cover;

[0013] The coil includes a stationary coil and a rotating coil, the rotating coil is tightly mounted on an insulating mounting plate, the insulating mounting plate is tightly mounted on a magnetic conductive material, the magnetic conductive material is tightly mounted on a rotating end cover, a heat pipe is provided on the rotating end cover, the rotating end cover drives the rotating shaft to rotate through a driving motor, and then rotates together with the solar sail panel; the stationary coil is mounted on the stationary end cover through an insulating mounting plate and a magnetic conductive material, and a heat pipe is provided on the stationary end cover; the wireless driving mechanism is mounted on a driving mechanism bracket, the rotating shaft, coil, insulating mounting plate, magnetic conductive material, stationary end cover, and rotating end cover are arranged in a driving mechanism housing; the rotating shaft is connected to the rotating end cover through a connecting flange.

[0014] Preferably, a heat expansion plate is provided between the wireless driving mechanism and the driving mechanism mounting plate and is filled with heat-conducting filler.

[0015] Preferably, the thermally conductive filler is thermally conductive silicone grease, and is sealed with silicone rubber.

[0016] Preferably, a multi-layer heat insulation component is provided on the outer surface of the heat pipe.

[0017] Preferably, the first heat sink and the solar panel are thermally insulated, and a multi-layer heat insulation component is provided on the side of the first heat sink close to the solar panel; the side of the first heat sink away from the solar panel is sprayed with ACR-1 anti-static white paint thermal control coating as a heat dissipation surface.

[0018] Preferably, the interior of the wireless drive mechanism is coated with an aluminum alloy black anodized thermal control coating, and the exterior of the wireless drive mechanism is sprayed with an ACR-1 anti-static white paint thermal control coating.

[0019] Preferably, an insulating film is provided between the wireless driving mechanism and the driving mechanism mounting plate.

[0020] Preferably, a thermal insulation pad is provided at the connecting flange.

[0021] Preferably, a light shield is installed on the solar panel tripod.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention meets the heat dissipation requirements of satellite or space station drive mechanisms and is particularly suitable for the thermal control design of high-power wireless energy transmission drive mechanisms, maintaining their temperature at an appropriate level and ensuring their normal on-orbit function.

[0024] 2. The thermal control device for a high-power wireless energy transmission drive mechanism of the present invention is applicable to the thermal design of both contact and non-contact drive mechanisms, and has strong adaptability. Both adopt a passive thermal control design and are highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0026] Figure 1 This is a schematic diagram of a thermal control device for a high-power wireless energy transmission drive mechanism according to the present invention;

[0027] Figure 2 The figure is a schematic diagram of the internal structure of a wireless driving mechanism of the present invention.

[0028] in:

[0029] Solar panel 1 Rotating shaft 9

[0030] Heat sink 2 Coil 10

[0031] Solar panel tripod 3 Insulation mounting plate 11

[0032] Heat pipe 4 drive mechanism bracket 12

[0033] Wireless drive mechanism 5 drive mechanism housing 13

[0034] Heat expansion plate 6 Magnetic material 14

[0035] Drive mechanism mounting plate 7 Stationary end cover 15

[0036] Drive motor 8 Connecting flange 16

[0037] Rotating end cap 17 DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0039] Example 1:

[0040] Reference Figure 1 and Figure 2 According to the present invention, a high-power wireless energy transmission drive mechanism thermal control device is provided, including: a solar panel 1, a heat dissipation plate 2, a solar panel tripod 3, a heat pipe 4, a wireless drive mechanism 5, a heat expansion plate 6 and a drive mechanism mounting plate 7; the heat dissipation plate 2 includes a first heat dissipation plate and a second heat dissipation plate, the solar panel 1 is provided with a first heat dissipation plate, and a plurality of heat pipes 4 are provided on the heat dissipation plate, one end of the heat pipe 4 is provided on the heat dissipation plate 2, and the other end is respectively provided on the stationary end cover 15 and the rotating end cover 17 of the wireless drive mechanism 5, the wireless drive mechanism 5 is provided between the first heat dissipation plate and the second heat dissipation plate, the solar panel tripod 3 is provided between the solar panel 1 and the wireless drive mechanism 5, and a heat expansion plate 6 is provided between the wireless drive mechanism 5 and the drive mechanism mounting plate 7.

[0041] The wireless drive mechanism 5 includes a drive motor 8, a rotating shaft 9, a coil 10, an insulating mounting plate 11, a drive mechanism bracket 12, a drive mechanism housing 13, a magnetic conductive material 14, a stationary end cover 15, a connecting flange 16 and a rotating end cover 17; the coil 10 includes a stationary coil and a rotating coil, the rotating coil is tightly mounted on the insulating mounting plate 11, the insulating mounting plate 11 is tightly mounted on the magnetic conductive material 14, the magnetic conductive material 14 is tightly mounted on the rotating end cover 17, the rotating end cover 17 is provided with a heat pipe 4, the rotating coil and the rotating end cover 1 7. The heat pipe 4 and the heat sink 2 drive the rotating shaft 9 to rotate through the drive motor 8 and then rotate together with the solar panel 1; the stationary coil is mounted on the stationary end cover 15 through the insulating mounting plate 11 and the magnetic conductive material 14, and the stationary end cover 15 is provided with a heat pipe 4; the wireless drive mechanism 5 is mounted on the drive mechanism bracket 12, and the rotating shaft 9, coil 10, insulating mounting plate 11, magnetic conductive material 14, stationary end cover 15, and rotating end cover 17 are arranged in the drive mechanism housing 13; the rotating shaft 9 is connected to the solar panel tripod 3 through the connecting flange 16.

[0042] A heat expansion plate 6 is arranged between the wireless drive mechanism 5 and the drive mechanism mounting plate 7, and is filled with thermally conductive filler; the thermally conductive filler is thermally conductive silicone grease, and is sealed with silicone rubber; a multi-layer thermal insulation component is arranged on the outer surface of the heat pipe 4; a thermal insulation installation is arranged between the first heat sink and the solar panel 1, and a multi-layer thermal insulation component is arranged on the side of the first heat sink close to the solar panel 1; the side of the first heat sink away from the solar panel 1 is sprayed with ACR-1 anti-static white paint thermal control coating as a heat dissipation surface; the interior of the wireless drive mechanism 5 adopts aluminum alloy black anodized thermal control coating, and the exterior of the wireless drive mechanism 5 is sprayed with ACR-1 anti-static white paint thermal control coating; an insulating film is arranged between the wireless drive mechanism 5 and the drive mechanism mounting plate 7; a thermal insulation pad is arranged at the connecting flange 16; a light shield is installed on the solar panel tripod 3.

[0043] Example 2:

[0044] The present invention provides a thermal control device for a high-power wireless energy transmission drive mechanism. The system comprises a wireless drive mechanism, a heat sink, a heat pipe, a heat expansion plate, a thermally conductive filler, and a thermal control coating. The wireless drive mechanism includes two high-heat flux heat sources: a stationary coil and a rotating coil. Due to the different mounting methods of the two coils, heat transfer paths must be designed for each coil to achieve efficient heat transfer. The rotating coil is mounted on an insulating mounting plate, which is mounted on magnetic material. The magnetic material is further mounted on a rotating end cap. Two curved heat pipes are arranged on the rotating end cap to transfer heat to a heat sink located on the back side of a solar panel. The rotating coil, end cap, heat pipe, and heat sink rotate with the solar panel. Similarly, the stationary coil is mounted on the stationary end cap via an insulating mounting plate and magnetic material. Two curved heat pipes are arranged on the stationary end cap to transfer heat to a heat sink located on the back side. Heat primarily flows from the coil through the insulating mounting plate, magnetic material, end cap, and heat pipes to the heat sink, where it is further dissipated to a cold space. At the same time, a heat expansion plate is provided between the drive mechanism and its mounting surface, and a thermally conductive filler is filled to enhance heat dissipation. The present invention aims to solve the design challenges of high-power wireless energy drive mechanisms for satellites or space stations, and to provide a design basis for temperature control of wireless energy transmission drive mechanisms.

[0045] In order to solve the thermal design problem of high-power wireless energy drive mechanism of satellites or space stations, a thermal control device for high-power wireless energy transmission drive mechanism is proposed, which can especially meet the high-power, long-life wireless energy transmission and temperature control requirements of satellites or space stations.

[0046] A high-power wireless energy transmission drive mechanism thermal control device is described as follows:

[0047] Structures such as wireless drive mechanism, heat sink, heat pipe, heat expansion plate, thermal conductive filler, multi-layer thermal insulation components and thermal control coating.

[0048] Due to the working principle of the wireless drive mechanism, heat is mainly concentrated on the stationary coil and the rotating coil. However, due to the different installation methods of the coils on both sides, the heat transfer paths need to be designed separately for the coils on both sides to achieve efficient heat transfer. The rotating side coil is tightly mounted on the insulating mounting plate, which is tightly mounted on the magnetic material. The magnetic material is further tightly mounted on the rotating end cover. Two curved heat pipes are arranged on the rotating end cover to transfer heat to the heat sink on the back of the solar panel. Similarly, the stationary side coil is installed on the stationary end cover through the insulating mounting and magnetic material. Two curved heat pipes are arranged on the stationary end cover to transfer heat to the heat sink on the side facing away from the sun. The heat concentrated in the coil is further dissipated to the cold space through the heat pipes and heat sink.

[0049] The wireless drive mechanism has a heat pipe and heat sink structure on both the rotating and stationary sides. The rotating coil, end cap, heat pipe and heat sink rotate along with the solar panel.

[0050] The heat expansion plate is installed between the wireless drive mechanism and the mounting plate to enhance heat exchange.

[0051] Thermal grease is filled between the drive mechanism, the heat expansion plate and the mounting plate, as well as between the heat dissipation plate and the heat pipe, and the edges are sealed with silicone rubber to reduce contact thermal resistance and enhance heat exchange.

[0052] Thermally conductive silicone rubber is filled between the drive mechanism coil, insulating mounting plate, magnetic material, drive mechanism housing and end cover to reduce contact thermal resistance, enhance heat exchange and ensure a certain degree of insulation.

[0053] The interior of the wireless drive mechanism is made of aluminum alloy with black anodized thermal control coating, and the exterior is sprayed with ACR-1 anti-static white paint thermal control coating.

[0054] Heat pipes need to be covered with multiple layers of insulation to reduce the impact of solar radiation or other heat sources to improve heat transfer efficiency.

[0055] The heat sink and the solar sail panel are installed with thermal insulation, and multi-layer insulation components are set on the installation surface to reduce the impact of the sail panel on it. The side facing away from the sun is sprayed with ACR-1 anti-static white paint thermal control coating as a heat dissipation surface.

[0056] Optionally, for added safety, an insulating film can be placed between the wireless drive mechanism and the mounting plate. To reduce solar exposure, a sunshade can be added to the side panel drive mechanism mounting hole. To minimize the impact of the solar panel tripod and drive mechanism, a 5mm thick thermal pad can be placed at the connecting flange. To reduce the temperature of the drive mechanism's extravehicular power cables under high current and direct sunlight, a sunshade can be installed on the solar panel tripod to shield the cables and their connectors from direct sunlight.

[0057] Those skilled in the art may understand this embodiment as a more specific description of Embodiment 1.

[0058] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0059] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A high-power wireless energy transmission drive mechanism thermal control device, characterized in that: include: A solar sail panel (1), a heat dissipation plate (2), a solar sail panel tripod (3), a heat pipe (4), a wireless drive mechanism (5), a heat expansion plate (6), and a drive mechanism mounting plate (7); The heat dissipation plate (2) comprises a first heat dissipation plate and a second heat dissipation plate. The solar sail panel (1) is provided with the first heat dissipation plate. A plurality of heat pipes (4) are provided on the heat dissipation plate. One end of the heat pipe (4) is provided on the heat dissipation plate (2), and the other end is provided on a stationary end cover and a rotating end cover of a wireless drive mechanism (5). The wireless drive mechanism (5) is provided between the first heat dissipation plate and the second heat dissipation plate. The solar sail panel tripod (3) is provided between the solar sail panel (1) and the wireless drive mechanism (5). A heat expansion plate (6) is provided between the wireless drive mechanism (5) and a drive mechanism mounting plate (7).

2. The high-power wireless energy transmission drive mechanism thermal control device according to claim 1, characterized in that: The wireless drive mechanism (5) comprises a drive motor (8), a rotating shaft (9), a coil (10), an insulating mounting plate (11), a drive mechanism bracket (12), a drive mechanism housing (13), a magnetic conductive material (14), a stationary end cover (15), a connecting flange (16) and a rotating end cover (17); The coil (10) includes a stationary coil and a rotating coil, the rotating coil is closely mounted on an insulating mounting plate (11), the insulating mounting plate (11) is closely mounted on a magnetic conductive material (14), the magnetic conductive material (14) is closely mounted on a rotating end cover (17), a heat pipe (4) is provided on the rotating end cover (17), the rotating coil, the rotating end cover (17), the heat pipe (4), and the heat dissipation plate (2) are driven by a driving motor (8) to rotate a rotating shaft (9) and thus rotate together with the solar sail panel (1); the stationary coil The coil is mounted on a stationary end cover (15) via an insulating mounting plate (11) and a magnetic conductive material (14), and a heat pipe (4) is provided on the stationary end cover (15); the wireless driving mechanism (5) is mounted on a driving mechanism bracket (12), and the rotating shaft (9), the coil (10), the insulating mounting plate (11), the magnetic conductive material (14), the stationary end cover (15), and the rotating end cover (17) are arranged in a driving mechanism housing (13); the rotating shaft (9) is connected to a solar panel tripod (3) via a connecting flange (16).

3. The high-power wireless energy transmission drive mechanism thermal control device according to claim 1, characterized in that: A heat expansion plate (6) is provided between the wireless drive mechanism (5) and the drive mechanism mounting plate (7), and is filled with heat-conducting filler.

4. The high-power wireless energy transmission drive mechanism thermal control device according to claim 3, characterized in that: The thermal conductive filler is thermal conductive silicone grease and is sealed with silicone rubber.

5. The high-power wireless energy transmission drive mechanism thermal control device according to claim 1, characterized in that: The outer surface of the heat pipe (4) is provided with a multi-layer heat insulation component.

6. The high-power wireless energy transmission drive mechanism thermal control device according to claim 1, characterized in that: A heat-insulating installation is provided between the first heat sink and the solar panel (1); a multi-layer heat-insulating assembly is provided on the side of the first heat sink close to the solar panel (1); and an ACR-1 anti-static white paint thermal control coating is sprayed on the side of the first heat sink away from the solar panel (1) as a heat dissipation surface.

7. The high-power wireless energy transmission drive mechanism thermal control device according to claim 1, characterized in that: The interior of the wireless drive mechanism (5) is coated with an aluminum alloy black anodized thermal control coating, and the exterior of the wireless drive mechanism (5) is sprayed with an ACR-1 antistatic white paint thermal control coating.

8. The thermal control device for a high-power wireless energy transmission drive mechanism according to claim 1, characterized in that: An insulating film is provided between the wireless driving mechanism (5) and the driving mechanism mounting plate (7).

9. The thermal control device for a high-power wireless energy transmission drive mechanism according to claim 2, characterized in that: A heat insulation pad is provided at the connecting flange (16).

10. The high-power wireless energy transmission drive mechanism thermal control device according to claim 1, characterized in that: A light blocking plate is installed on the solar sail panel tripod (3).

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