Satellite payload thermal control device and thermal control method

Abstract

The present application relates to the field of satellite payload technology, and provides a satellite payload thermal control device and thermal control method. The satellite payload thermal control device includes: a payload, at least one wall of the payload is provided with a heat dissipation surface; a winding assembly, mounted on the payload; a movable multi-layer thermal insulation assembly, wound on the winding assembly, the movable multi-layer thermal insulation assembly being suitable for shielding the heat dissipation surface; a driving assembly, mounted on the payload, the driving assembly being connected to the winding assembly, the driving assembly being suitable for driving the winding assembly to switch between a forward rotation state and a reverse rotation state, wherein, in the case of the forward rotation state, the winding assembly winds the movable multi-layer thermal insulation assembly, so that the heat dissipation area of ​​the heat dissipation surface is increased, and in the case of the reverse rotation state, the heat dissipation area of ​​the heat dissipation surface is reduced. According to the satellite payload thermal control device of the embodiment of the present application, the heat dissipation area of ​​the heat dissipation surface is adjusted according to different working conditions, so that the temperature of the heat dissipation surface is kept within a reasonable range, and no additional energy consumption is required for heat compensation of the heat dissipation surface.

Description

Technical Field

[0001] The present application relates to the field of satellite payload technology, and in particular to a satellite payload thermal control device and thermal control method. Background Art

[0002] Existing satellite payload heat dissipation surfaces are mostly designed with a fixed area. During in-orbit operation, as the heat dissipation coating degrades due to space radiation, the surface temperature gradually rises over its lifespan. Typically, by mid-life or late-life, the heat dissipation component's upper temperature limit is reached or even exceeds the upper limit for normal operation, irreversibly impacting the normal operation of the operating components.

[0003] In order to ensure the normal operation of satellite payloads, the relevant technologies use redundant design for the heat dissipation surface area. However, since a larger heat dissipation area requires excess energy consumption to compensate, it easily leads to a waste of resources. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the related art. To this end, this application proposes a satellite payload thermal control device that adjusts the heat dissipation area of ​​the heat dissipation surface according to different operating conditions, so that the temperature of the heat dissipation surface remains within a reasonable range without consuming additional energy to compensate for the heat of the heat dissipation surface.

[0005] This application also proposes a satellite payload thermal control method.

[0006] The satellite payload thermal control device according to the first embodiment of the present application includes:

[0007] A load, wherein at least one wall surface of the load is provided with a heat dissipation surface;

[0008] a winding assembly mounted on the load;

[0009] a movable multi-layer thermal insulation assembly, wound on the winding assembly, wherein the movable multi-layer thermal insulation assembly is suitable for shielding the heat dissipation surface;

[0010] A drive assembly is installed on the load, and the drive assembly is connected to the winding assembly. The drive assembly is suitable for driving the winding assembly to switch between a forward rotation state and a reverse rotation state, wherein, in the forward rotation state, the winding assembly winds the movable multi-layer thermal insulation assembly, thereby increasing the heat dissipation area of ​​the heat dissipation surface; in the reverse rotation state, the winding assembly releases the movable multi-layer thermal insulation assembly, thereby reducing the heat dissipation area of ​​the heat dissipation surface.

[0011] According to the satellite payload thermal control device of the embodiment of the present application, the drive assembly drives the winding assembly to rotate, so that the winding assembly switches between a forward rotation state and a reverse rotation state. When the temperature of the heat dissipation surface is lower than a preset temperature, the drive assembly drives the winding assembly to the reverse rotation state, and the winding assembly releases the mobile multi-layer thermal insulation assembly. The mobile multi-layer thermal insulation assembly increases the shielding area of ​​the heat dissipation surface, so that the heat dissipation area of ​​the heat dissipation surface is reduced. Under the shielding and heat insulation effect of the mobile multi-layer thermal insulation assembly, heat will be dissipated from the unshielded part of the heat dissipation surface to the outside, thereby increasing the temperature of the heat dissipation surface, so that the temperature of the heat dissipation surface is maintained at a preset temperature. When the temperature of the heat dissipation surface is higher than the preset temperature, the drive assembly drives the winding assembly to the forward rotation state, and the winding assembly winds the mobile multi-layer thermal insulation assembly. The mobile multi-layer thermal insulation assembly reduces the shielding area of ​​the heat dissipation surface, so that the heat dissipation area of ​​the heat dissipation surface is increased, thereby increasing the heat dissipation speed of the heat dissipation surface, and reducing the temperature of the heat dissipation surface, so that the temperature of the heat dissipation surface is maintained at a preset temperature. That is, the present application can adjust the heat dissipation area of ​​the heat dissipation surface by driving the winding component to rotate according to different working conditions, so that the temperature of the heat dissipation surface is maintained within a reasonable range, and no additional energy consumption is required to compensate the heat of the heat dissipation surface.

[0012] According to one embodiment of the present application, the winding assembly includes a first roller and a second roller, the first roller and the second roller are respectively located at the two ends of the heat dissipation surface, the satellite payload thermal control device includes a connecting member, the mobile multi-layer insulation assembly is connected to the connecting member, the first end of the connecting member is wound around the first roller, and the second end of the connecting member is wound around the second roller.

[0013] According to one embodiment of the present application, the connecting member is a flexible belt, a first end of the flexible belt is connected to the first roller, and a second end of the flexible belt is connected to the second roller.

[0014] According to one embodiment of the present application, the winding assembly includes a first support member and a second support member, the first support member and the second support member are both installed on the outer wall surface of the load, the first roller is connected to the load through the first support member, the first roller can rotate relative to the first support member, and the second roller is connected to the load through the second support member, and the second roller can rotate relative to the second support member.

[0015] According to one embodiment of the present application, the driving assembly includes a first motor and a second motor, the first motor is connected to the first roller, the first motor is suitable for driving the first roller to rotate, and the second motor is connected to the second roller, the second motor is suitable for driving the second roller to rotate.

[0016] According to one embodiment of the present application, the heat dissipation surfaces are provided at two oppositely arranged wall surfaces of the load, the first end of the movable multi-layer thermal insulation component is suitable for shielding one of the heat dissipation surfaces, and the second end of the movable multi-layer thermal insulation component is suitable for shielding the other heat dissipation surface, wherein, in the case of the forward rotation state, the heat dissipation area of ​​one of the heat dissipation surfaces increases, and the heat dissipation area of ​​the other heat dissipation surface decreases, and in the case of the reverse rotation, the heat dissipation area of ​​one of the heat dissipation surfaces decreases, and the heat dissipation area of ​​the other heat dissipation surface increases.

[0017] According to one embodiment of the present application, the winding assembly includes a winding roller assembly and a pulling roller assembly, the movable multi-layer thermal insulation assembly is connected to the winding roller assembly, and the first end of the movable multi-layer thermal insulation assembly and the second end of the movable multi-layer thermal insulation assembly are both connected to the pulling roller assembly.

[0018] According to one embodiment of the present application, the pulling roller assembly includes a first pulling roller and a second pulling roller, the first end of the movable multi-layer thermal insulation assembly is connected to the first pulling roller, and the second end of the movable multi-layer thermal insulation assembly is connected to the second pulling roller.

[0019] A satellite payload thermal control method according to an embodiment of the second aspect of the present application includes:

[0020] Obtaining the real-time temperature of the heat dissipation surface;

[0021] Determining whether the real-time temperature is higher than a preset temperature;

[0022] If so, controlling the movement of the mobile multi-layer thermal insulation assembly to increase the heat dissipation area of ​​the heat dissipation surface;

[0023] If not, the movable multi-layer thermal insulation assembly is controlled to move so as to reduce the heat dissipation area of ​​the heat dissipation surface.

[0024] According to the satellite payload thermal control method of the present application, it has a satellite payload thermal control device, and also has all the beneficial effects of the satellite payload thermal control device, which will not be repeated here.

[0025] According to one embodiment of the present application, the payload includes two heat dissipation surfaces arranged opposite to each other, and the satellite payload thermal control method further includes:

[0026] determining one of the heat dissipation surfaces exposed to sunlight as a target heat dissipation surface;

[0027] The mobile multi-layer heat insulation assembly is controlled to move toward the target heat dissipation surface, so that the heat dissipation area of ​​the target heat dissipation surface is reduced to 0, and the heat dissipation area of ​​the other heat dissipation surface is increased.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is one of the structural schematic diagrams of the satellite payload thermal control device provided in the embodiment of the present application;

[0031] Figure 2 This is one of the simplified structural diagrams of the satellite payload thermal control device provided in the embodiment of the present application;

[0032] Figure 3 This is the second structural diagram of the satellite payload thermal control device provided in the embodiment of the present application;

[0033] Figure 4 This is the second structural diagram of the satellite payload thermal control device provided in the embodiment of the present application.

[0034] Reference numerals:

[0035] 1. Load; 2. Winding assembly; 3. Moving multi-layer insulation assembly; 4. Driving assembly; 5. Connectors;

[0036] 11. heat dissipation surface; 21. first roller; 22. second roller; 23. first support member;

[0037] 24. Second support member; 25. First pulling roller; 26. Second pulling roller;

[0038] 27. Winding roller assembly; 41. First motor; 42. Second motor. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present 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 operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0042] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0044] The following combination Figures 1 to 4 The present invention describes a satellite payload thermal control device and a thermal control method.

[0045] According to the embodiment of the first aspect of the present application, Figure 1 and Figure 2 As shown, the satellite payload thermal control device includes:

[0046] A load 1, wherein at least one wall surface of the load 1 is provided with a heat dissipation surface 11;

[0047] Winding assembly 2, mounted on load 1;

[0048] The mobile multi-layer heat insulation component 3 is wound on the winding component 2, and the mobile multi-layer heat insulation component 3 is suitable for shielding the heat dissipation surface 11;

[0049] The driving assembly 4 is installed on the load 1. The driving assembly 4 is connected to the winding assembly 2. The driving assembly 4 is suitable for driving the winding assembly 2 to switch between a forward rotation state and a reverse rotation state. In the forward rotation state, the winding assembly 2 winds the moving multi-layer thermal insulation assembly 3, so that the heat dissipation area of ​​the heat dissipation surface 11 increases. In the reverse rotation state, the winding assembly 2 releases the moving multi-layer thermal insulation assembly 3, so that the heat dissipation area of ​​the heat dissipation surface 11 decreases.

[0050] According to the satellite payload thermal control device of the embodiment of the present application, the drive assembly 4 drives the winding assembly 2 to rotate, so that the winding assembly 2 switches between a forward rotation state and a reverse rotation state. When the temperature of the heat dissipation surface 11 is lower than the preset temperature, the drive assembly 4 drives the winding assembly 2 to the reverse rotation state, the winding assembly 2 releases the mobile multi-layer thermal insulation assembly 3, the mobile multi-layer thermal insulation assembly 3 increases the shielding area of ​​the heat dissipation surface 11, so that the heat dissipation area of ​​the heat dissipation surface 11 is reduced, and under the shielding and heat insulation effect of the mobile multi-layer thermal insulation assembly 3, heat will be dissipated from the unshielded part of the heat dissipation surface 11 to the outside, thereby increasing the temperature of the heat dissipation surface 11, so that the temperature of the heat dissipation surface 11 is maintained at the preset temperature. When the temperature of the heat dissipation surface 11 is higher than the preset temperature, the drive assembly 4 drives the winding assembly 2 to the forward rotation state, the winding assembly 2 winds the mobile multi-layer thermal insulation assembly 3, the mobile multi-layer thermal insulation assembly 3 reduces the shielding area of ​​the heat dissipation surface 11, so that the heat dissipation area of ​​the heat dissipation surface 11 is increased, thereby increasing the heat dissipation speed of the heat dissipation surface 11, and reducing the temperature of the heat dissipation surface 11, so that the temperature of the heat dissipation surface 11 is maintained at the preset temperature. That is, the present application can adjust the heat dissipation area of ​​the heat dissipation surface 11 by driving the winding component 2 to rotate through the driving component 4 according to different working conditions, so that the temperature of the heat dissipation surface 11 is maintained within a reasonable range, and no additional energy consumption is required to compensate the heat of the heat dissipation surface 11.

[0051] It is understandable that the heat dissipation area in the related art is redundant. When receiving less solar radiation, the temperature of heat dissipation surface 11 will drop. In this case, to prevent the temperature of heat dissipation surface 11 from being too low and thus affecting the operation of load 1, excess energy needs to be consumed to compensate for the temperature drop. However, the present application directly adjusts the heat dissipation area of ​​heat dissipation surface 11, and the movable multi-layer insulation assembly 3 can insulate heat dissipation surface 11, thereby maintaining the temperature of heat dissipation surface 11 within a reasonable range without consuming additional energy.

[0052] It can be understood that the movable multi-layer thermal insulation assembly 3 refers to a movable component with a multi-layer thermal insulation structure.

[0053] It can be understood that the movable multi-layer thermal insulation assembly 3 can be directly connected to the winding assembly 2 or connected to the winding assembly 2 through a connecting structure.

[0054] It can be understood that the movable multi-layer insulation assembly 3 is a flexible component.

[0055] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the winding assembly 2 includes a first roller 21 and a second roller 22, and the first roller 21 and the second roller 22 are respectively located at the two ends of the heat dissipation surface 11. The satellite payload thermal control device includes a connector 5, and the mobile multi-layer insulation assembly 3 is connected to the connector 5. The first end of the connector 5 is wound on the first roller 21, and the second end of the connector 5 is wound on the second roller 22.

[0056] It is understood that the first roller 21 is positioned at the first end of the heat dissipation surface 11, and the second roller 22 is positioned at the second end of the heat dissipation surface 11, with the first and second ends of the heat dissipation surface 11 being oppositely disposed. When the temperature of the heat dissipation surface 11 is too high, the first roller 21 and the second roller 22 are controlled to rotate in a first direction, so that the first roller 21 winds around the first end of the connector 5, causing the connector 5 to move the movable multi-layer insulation assembly 3, thereby increasing the heat dissipation area of ​​the heat dissipation surface 11. When the temperature of the heat dissipation surface 11 is too low, the first roller 21 and the second roller 22 are controlled to rotate in a second direction, the first and second directions being opposite, so that the first roller 21 releases the first end of the connector 5 and the second roller 22 winds around the second end of the connector 5, causing the connector 5 to move the movable multi-layer insulation assembly 3, thereby reducing the heat dissipation area of ​​the heat dissipation surface 11.

[0057] It can be understood that both ends of the movable multi-layer insulation assembly 3 are indirectly connected to the winding assembly 2 through the connecting piece 5.

[0058] In one embodiment of the present application, the connecting member 5 is a flexible belt, a first end of the flexible belt is connected to the first roller, and a second end of the flexible belt is connected to the second roller 22 .

[0059] It can be understood that when winding and releasing the movable multi-layer thermal insulation component 3, the force between the movable multi-layer thermal insulation component 3 and the first roller 21 and the force between the movable multi-layer thermal insulation component 3 and the second roller 22 are both transmitted through the flexible belt, that is, the pulling force that drives the movable multi-layer thermal insulation component 3 to move is mainly borne directly by the flexible belt, which can effectively prevent the movable multi-layer thermal insulation component 3 from being damaged by the force.

[0060] It is understood that the flexible belt has flexibility and a certain mechanical tensile strength. For example, nylon, Kevlar and other materials can be used as the flexible belt.

[0061] In the embodiment of the present application, the flexible belt is connected to the inner wall surface of the movable multi-layer thermal insulation assembly 3 by, for example, a flame-retardant wire.

[0062] In an embodiment of the present application, the flexible belt is connected to the inner wall surface of the movable multi-layer thermal insulation component 3, that is, at least part of the flexible belt is located between the movable multi-layer thermal insulation component 3 and the heat dissipation surface 11, which can prevent the flexible belt from oxidizing in a space radiation environment.

[0063] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the winding assembly 2 includes a first support member 23 and a second support member 24, both of which are installed on the outer wall of the load 1, and the first roller 21 is connected to the load 1 through the first support member 23, and the first roller 21 can rotate relative to the first support member 23, and the second roller 22 is connected to the load 1 through the second support member 24, and the second roller 22 can rotate relative to the second support member 24.

[0064] It is understandable that the first support member 23 can support the first roller 21 , and the second support member 24 can support the second roller 22 , so that the first roller 21 and the second roller 22 are stably installed on the load 1 .

[0065] It can be understood that the first support member 23 includes two first support structures, and the two first support structures are respectively located at two ends of the first roller 21.

[0066] It can be understood that the second support member 24 includes two second support structures, and the two second support structures are respectively located at two ends of the second roller 22.

[0067] In one embodiment of the present application, Figure 1 and Figure 2 As shown, the driving assembly 4 includes a first motor 41 and a second motor 42. The first motor 41 is connected to the first roller 21 and is suitable for driving the first roller 21 to rotate. The second motor 42 is connected to the second roller 22 and is suitable for driving the second roller 22 to rotate.

[0068] It can be understood that the first motor 41 drives the first roller 21 to rotate, and the second motor 42 drives the second roller 22 to rotate, so that the first roller 21 and the second roller 22 can keep rotating in the same direction, and the first roller 21 and the second roller 22 can rotate clockwise or counterclockwise at the same time, thereby realizing the winding or releasing of the mobile multi-layer insulation assembly 3.

[0069] In one embodiment of the present application, Figure 3 and Figure 4 As shown, heat dissipation surfaces 11 are provided at two oppositely arranged wall surfaces of the load 1, the first end of the movable multi-layer heat insulation component 3 is suitable for shielding one of the heat dissipation surfaces 11, and the second end of the movable multi-layer heat insulation component 3 is suitable for shielding the other heat dissipation surface 11, wherein, in the case of forward rotation, the heat dissipation area of ​​one heat dissipation surface 11 increases, and the heat dissipation area of ​​the other heat dissipation surface 11 decreases, and in the case of reverse rotation, the heat dissipation area of ​​one heat dissipation surface 11 decreases, and the heat dissipation area of ​​the other heat dissipation surface 11 increases.

[0070] It is understood that when the load 1 is in a condition where it is exposed to sunlight in turn, such as when it is in a geosynchronous orbit and then in a circular orbit, the winding assembly 2 drives the movable multi-layer insulation assembly 3 to move, causing the first end and the second end of the movable multi-layer insulation assembly 3 to move. Specifically, it is first determined which of the two heat dissipation surfaces 11 of the load 1 is currently exposed to sunlight. For example, if one of the heat dissipation surfaces 11 is exposed to sunlight, the winding assembly 2 is controlled to rotate in the opposite direction, so that the heat dissipation area of ​​one of the heat dissipation surfaces 11 is reduced and the heat dissipation area of ​​the other heat dissipation surface 11 is increased. This effectively prevents one of the heat dissipation surfaces 11 from being degraded by sunlight. At this time, the heat dissipation of the load 1 is mainly carried out through the other heat dissipation surface 11. Since the other heat dissipation surface 11 is not exposed to sunlight or the area exposed to sunlight is smaller, the area and possibility of degradation of the other heat dissipation surface 11 due to sunlight exposure are both smaller, thereby effectively extending the life of the heat dissipation surface 11 of the load 1.

[0071] In one embodiment of the present application, Figure 3 and Figure 4 As shown, the winding assembly 2 includes a winding roller assembly 27 and a pulling roller assembly, the movable multi-layer insulation assembly 3 is connected to the winding roller assembly 27, and the first end of the movable multi-layer insulation assembly 3 and the second end of the movable multi-layer insulation assembly 3 are both connected to the pulling roller assembly.

[0072] It can be understood that the winding roller assembly 27 can drive the movable multi-layer thermal insulation assembly 3 to move, and the first end and the second end of the movable multi-layer thermal insulation assembly 3 are both connected to the pulling roller assembly, and the pulling roller assembly can rotate relative to the load 1. When the movable multi-layer thermal insulation assembly 3 moves, the pulling roller assembly will rotate accordingly.

[0073] In one embodiment of the present application, Figure 3 and Figure 4 As shown, the pulling roller assembly includes a first pulling roller 25 and a second pulling roller 26 , the first end of the mobile multi-layer insulation assembly 3 is connected to the first pulling roller 25 , and the second end of the mobile multi-layer insulation assembly 3 is connected to the second pulling roller 26 .

[0074] In the embodiment of the present application, the winding roller assembly 27 includes at least one winding roller.

[0075] According to an embodiment of the second aspect of the present application, a satellite payload thermal control method includes:

[0076] Obtaining the real-time temperature of the heat dissipation surface 11;

[0077] Determine whether the real-time temperature is higher than the preset temperature;

[0078] If yes, the multi-layer thermal insulation assembly 3 is controlled to move so as to increase the heat dissipation area of ​​the heat dissipation surface 11;

[0079] If not, the multi-layer thermal insulation assembly 3 is controlled to move so as to reduce the heat dissipation area of ​​the heat dissipation surface 11 .

[0080] According to the satellite payload thermal control method of the embodiment of the present application, the real-time temperature of the heat dissipation surface 11 is compared with the preset temperature. When it is determined that the real-time temperature is higher than the preset temperature, it means that the temperature of the heat dissipation surface 11 is too high at this time. Then, the mobile multi-layer thermal insulation component 3 is controlled to move, and the heat dissipation area of ​​the heat dissipation surface 11 is increased to reduce the temperature of the heat dissipation surface 11. When it is determined that the real-time temperature is lower than the preset temperature, it means that the temperature of the heat dissipation surface 11 is too low at this time. Then, the mobile multi-layer thermal insulation component 3 is controlled to move, and the heat dissipation area of ​​the heat dissipation surface 11 is reduced to increase the temperature of the heat dissipation surface 11. The heat dissipation area of ​​the heat dissipation surface 11 is automatically adjusted according to different working conditions, so that the temperature of the heat dissipation surface 11 is maintained within a reasonable range.

[0081] It is understandable that the temperature of the heat dissipation surface 11 can be detected by a temperature sensor, and then the controller or server can obtain the real-time temperature of the heat dissipation surface 11 by acquiring the detection data of the temperature sensor.

[0082] In one embodiment of the present application, the payload 1 includes two heat dissipation surfaces 11 disposed opposite to each other, and the satellite payload thermal control method further includes:

[0083] Determine one of the heat dissipation surfaces 11 exposed to sunlight as a target heat dissipation surface 11;

[0084] The multi-layer heat-insulating assembly 3 is controlled to move toward the target heat-dissipating surface 11 , so that the heat-dissipating area of ​​the target heat-dissipating surface 11 is reduced to 0, and the heat-dissipating area of ​​another heat-dissipating surface 11 is increased.

[0085] It is understandable that which heat dissipation surface 11 of the load 1 is being exposed to sunlight can be determined based on the position of the load 1, or by detecting the heat dissipation surface 11 using a light sensor or a temperature sensor to determine which heat dissipation surface 11 is being exposed to sunlight.

[0086] It can be understood that after determining the target heat dissipation surface 11, the control driving component 4 drives the winding component 2 to move, so that the winding component 2 drives the mobile multi-layer thermal insulation component 3 to move toward the target heat dissipation surface 11, so that the mobile multi-layer thermal insulation component 3 completely blocks the target heat dissipation surface 11, so that the heat dissipation area of ​​the target heat dissipation surface 11 is reduced to 0, and the target heat dissipation surface 11 is prevented from being exposed to sunlight. At this time, since the mobile multi-layer thermal insulation component 3 moves toward the target heat dissipation surface 11, the heat dissipation area of ​​the other heat dissipation surface 11 opposite to the target heat dissipation surface 11 increases, and the load 1 can exchange heat with the external space through the other heat dissipation surface 11.

[0087] Finally, it should be noted that the above embodiments are intended only to illustrate the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application and are intended to be encompassed by the claims of the present application.

Claims

1. A satellite payload thermal control device, characterized in that: include: A load, wherein at least one wall surface of the load is provided with a heat dissipation surface; a winding assembly mounted on the load; a movable multi-layer thermal insulation assembly, wound on the winding assembly, wherein the movable multi-layer thermal insulation assembly is suitable for shielding the heat dissipation surface; a drive assembly mounted on the load, the drive assembly being connected to the winding assembly, the drive assembly being adapted to drive the winding assembly to switch between a forward rotation state and a reverse rotation state, wherein, in the forward rotation state, the winding assembly winds up the movable multi-layer thermal insulation assembly, thereby increasing the heat dissipation area of ​​the heat dissipation surface; and in the reverse rotation state, the winding assembly releases the movable multi-layer thermal insulation assembly, thereby reducing the heat dissipation area of ​​the heat dissipation surface. The heat dissipation surfaces are provided at the two oppositely arranged wall surfaces of the load, the first end of the movable multi-layer heat insulation component is suitable for shielding one of the heat dissipation surfaces, and the second end of the movable multi-layer heat insulation component is suitable for shielding the other heat dissipation surface, wherein, in the case of the forward rotation state, the heat dissipation area of ​​one of the heat dissipation surfaces increases, and the heat dissipation area of ​​the other heat dissipation surface decreases, and in the case of the reverse rotation, the heat dissipation area of ​​one of the heat dissipation surfaces decreases, and the heat dissipation area of ​​the other heat dissipation surface increases.

2. The satellite payload thermal control device according to claim 1, characterized in that: The winding assembly includes a first roller and a second roller, and the first roller and the second roller are respectively located at the two ends of the heat dissipation surface. The satellite payload thermal control device includes a connecting member, and the mobile multi-layer insulation assembly is connected to the connecting member. The first end of the connecting member is wound around the first roller, and the second end of the connecting member is wound around the second roller.

3. The satellite payload thermal control device according to claim 2, characterized in that: The connecting member is a flexible belt, a first end of the flexible belt is connected to the first roller, and a second end of the flexible belt is connected to the second roller.

4. The satellite payload thermal control device according to claim 2, characterized in that: The winding assembly includes a first support member and a second support member, both of which are installed on the outer wall of the load, the first roller is connected to the load through the first support member, and the first roller can rotate relative to the first support member, and the second roller is connected to the load through the second support member, and the second roller can rotate relative to the second support member.

5. The satellite payload thermal control device according to claim 2, characterized in that: The driving assembly includes a first motor and a second motor. The first motor is connected to the first roller and is suitable for driving the first roller to rotate. The second motor is connected to the second roller and is suitable for driving the second roller to rotate.

6. The satellite payload thermal control device according to any one of claims 1 to 5, characterized in that: The winding assembly includes a winding roller assembly and a pulling roller assembly, the movable multi-layer thermal insulation assembly is connected to the winding roller assembly, and the first end of the movable multi-layer thermal insulation assembly and the second end of the movable multi-layer thermal insulation assembly are both connected to the pulling roller assembly.

7. The satellite payload thermal control device according to claim 6, characterized in that: The pulling roller assembly includes a first pulling roller and a second pulling roller, the first end of the movable multi-layer thermal insulation assembly is connected to the first pulling roller, and the second end of the movable multi-layer thermal insulation assembly is connected to the second pulling roller.

8. A satellite payload thermal control method based on the satellite payload thermal control device according to any one of claims 1 to 7, characterized in that: include: Obtaining the real-time temperature of the heat dissipation surface; Determining whether the real-time temperature is higher than a preset temperature; If so, controlling the movement of the mobile multi-layer thermal insulation assembly to increase the heat dissipation area of ​​the heat dissipation surface; If not, the movable multi-layer thermal insulation assembly is controlled to move so as to reduce the heat dissipation area of ​​the heat dissipation surface.

9. The satellite payload thermal control method according to claim 8, characterized in that: The payload includes two heat dissipation surfaces arranged opposite to each other, and the satellite payload thermal control method further includes: determining one of the heat dissipation surfaces exposed to sunlight as a target heat dissipation surface; The mobile multi-layer heat insulation assembly is controlled to move toward the target heat dissipation surface, so that the heat dissipation area of ​​the target heat dissipation surface is reduced to 0, and the heat dissipation area of ​​the other heat dissipation surface is increased.

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