Self-energy-storage thermal control system and method for satellite-borne communication equipment

Abstract

The invention relates to the technical field of thermal control of electronic components, in particular to a self-energy-storage thermal control system and method of satellite-borne communication equipment. The system comprises a shell, a plurality of PCBs, a plurality of phase change energy storage cold plates and a liquid cooling pipeline, the PCBs, the phase change energy storage cold plates and the liquid cooling pipeline are all arranged in the shell, a first liquid flow channel is arranged in a shell body of the shell, a phase change energy storage material is arranged in a first inner cavity in each phase change energy storage cold plate, a second liquid flow channel is arranged in a second inner cavity in each phase change energy storage cold plate, and the first liquid flow channel is communicated with the second liquid flow channel. The first inner cavity is attached to the PCB, the second inner cavity is opposite to the first inner cavity, the liquid cooling pipeline is connected with the first liquid flow channel and the second liquid flow channel, and liquid cooling working media circulate in the second liquid flow channel, the liquid cooling pipeline and the first liquid flow channel. And the liquid cooling working medium is used for circulating the heat of the phase change energy storage material absorbing the heat of the PCB into the shell and dissipating the heat to the external environment. According to the technical scheme, the problem that on-orbit short-term startup temperature rise of the satellite-borne communication equipment is too large can be solved, heat can be used for low-temperature heat preservation of the equipment, and temperature control power consumption of the whole satellite is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal control of electronic components, and in particular to a self-storage thermal control system and method for satellite-borne communication equipment. Background Art

[0002] With the rapid development of low-orbit broadband communication satellite technology, low-latency, high-throughput and miniaturized satellites have become a trend. High-speed data processing on board has led to a continuous increase in the power consumption of equipment, but this type of equipment (i.e., satellite-borne communication equipment) usually only needs to meet short-term peak work. In order to solve the problem of excessive temperature rise of satellite-borne communication equipment during short-term startup in orbit, it is necessary to cool down or control the temperature of the satellite-borne communication equipment in a timely manner.

[0003] In the related technologies, passive heat dissipation technology with embedded heat pipes on the mounting surface or liquid cooling technology is usually used, that is, a pump drives the fluid to absorb heat through the heat source in sequence, and then pumps it to the radiator for radiation and heat dissipation. However, these two methods still have the risk of excessive temperature rise of satellite communication equipment when it is turned on for a short period of time in orbit.

[0004] Therefore, there is an urgent need to provide a self-storage thermal control system and method for satellite-borne communication equipment to solve the above-mentioned technical problems. Summary of the invention

[0005] The embodiment of the present invention provides a self-energy storage thermal control system and method for satellite-borne communication equipment, which can solve the problem of excessive temperature rise of satellite-borne communication equipment when it is turned on for a short period of time in orbit, and can use the heat to keep the equipment warm at low temperatures, saving the power consumption of temperature control of the entire satellite.

[0006] In a first aspect, an embodiment of the present invention provides a self-storage thermal control system for satellite-borne communication equipment, comprising a shell, a plurality of PCB boards, a plurality of phase-change energy storage cold plates and a liquid cooling pipeline, wherein the plurality of PCB boards, the plurality of phase-change energy storage cold plates and the liquid cooling pipeline are all arranged in the shell, a first liquid flow channel is arranged inside the shell of the shell, a first inner cavity inside the phase-change energy storage cold plate is arranged with a phase-change energy storage material, a second inner cavity is arranged with a second liquid flow channel, the first inner cavity is in contact with the PCB board, and the second inner cavity is opposite to the first inner cavity, the liquid cooling pipeline is respectively connected to the first liquid flow channel and the second liquid flow channel, a liquid cooling medium circulates in the second liquid flow channel, the liquid cooling pipeline and the first liquid flow channel, and the liquid cooling medium is used to circulate the heat of the phase-change energy storage material that absorbs the heat of the PCB board into the shell and dissipate heat to the external environment.

[0007] In a second aspect, an embodiment of the present invention provides a self-storage thermal control method for a satellite-borne communication device, which is applied to the system described in the above embodiment, including:

[0008] A first liquid flow channel is provided inside the shell of the housing;

[0009] A phase-change energy storage material is arranged in a first inner cavity inside the phase-change energy storage cold plate, and a second liquid flow channel is arranged in a second inner cavity;

[0010] The liquid cooling medium is made to circulate through the second liquid flow channel, the liquid cooling pipeline and the first liquid flow channel, so as to utilize the liquid cooling medium to circulate the heat of the phase change energy storage material that absorbs the heat of the PCB board into the housing and dissipate the heat to the external environment.

[0011] The embodiment of the present invention provides a self-storage thermal control system and method for satellite-borne communication equipment. By setting up multiple phase-change energy storage cold plates and liquid cooling pipelines, the phase-change energy storage material in the phase-change energy storage cold plate can promptly and quickly absorb the heat generated by the PCB board and increase the thermal capacity of the energy storage. Then, the heat absorbed by the phase-change energy storage material is circulated into the outer shell through the liquid cooling medium and dissipated to the external environment. Therefore, the above technical solution fully considers the communication and short-term working characteristics of the satellite-borne communication equipment, and innovatively proposes an integrated design that fully integrates the energy storage, liquid cooling circuit and equipment structure, which better solves the problem of heat dissipation when the equipment is turned on, and can greatly reduce the thermal control power consumption, thereby saving energy for the satellite. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a self-storage thermal control system for satellite-borne communication equipment provided by an embodiment of the present invention;

[0014] Figure 2 yes Figure 1 An exploded view of a phase change energy storage cold plate in a self-storage thermal control system at a first viewing angle is shown;

[0015] Figure 3 yes Figure 1 An exploded view of the phase change energy storage cold plate in the self-energy storage thermal control system from a second perspective is shown.

[0016] Reference numerals:

[0017] 1-housing; 2-PCB board; 3-phase change energy storage cold plate; 4-liquid cooling pipeline; 5-compensator; 6-pump; 7-partition; 8-temperature control valve; 11-power consumption element; 12-boss; 13-first cover plate; 14-middle plate; 15-second cover plate; 16-fin. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] like Figure 1 As shown, an embodiment of the present invention provides a self-storage thermal control system for satellite-borne communication equipment, including a shell 1, multiple PCB boards 2, multiple phase-change energy storage cold plates 3 and a liquid cooling pipeline 4. The multiple PCB boards 2, the multiple phase-change energy storage cold plates 3 and the liquid cooling pipeline 4 are all arranged in the shell 1. A first liquid flow channel is arranged inside the shell of the shell 1. The first inner cavity inside the phase-change energy storage cold plate 3 is provided with a phase-change energy storage material. The second inner cavity is provided with a second liquid flow channel. The first inner cavity is in contact with the PCB board 2, and the second inner cavity is opposite to the first inner cavity. The liquid cooling pipeline 4 is respectively connected to the first liquid flow channel and the second liquid flow channel. Liquid cooling medium circulates in the second liquid flow channel, the liquid cooling pipeline 4 and the first liquid flow channel. The liquid cooling medium is used to circulate the heat of the phase-change energy storage material that absorbs the heat of the PCB board 2 to the shell 1 and dissipate heat to the external environment.

[0020] In this embodiment, by setting up multiple phase change energy storage cold plates 3 and liquid cooling pipelines 4, the phase change energy storage material in the phase change energy storage cold plate 3 can absorb the heat generated by the PCB board 2 in a timely and rapid manner. The multiple phase change energy storage cold plates are connected into a whole through pipelines to improve the thermal capacity of energy storage, and then the heat absorbed by the phase change energy storage material is circulated into the outer shell 1 through the liquid cooling medium and dissipated to the external environment. Therefore, the above technical solution fully considers the communication and short-term working characteristics of the satellite communication equipment, and innovatively proposes an integrated design that fully integrates the energy storage, liquid cooling circuit and equipment structure, which better solves the problem of heat dissipation when the equipment is turned on, and can greatly reduce the thermal control power consumption, thereby saving energy for the satellite.

[0021] In one embodiment of the present invention, a multi-layer heat insulation component is provided on the inner surface of the outer shell 1, so that the heat insulation performance of the outer shell 1 can be increased.

[0022] In one embodiment of the present invention, the outer surface of the housing 1 is provided with white paint, and the heat dissipation area can be reasonably designed according to the power consumption and startup time of the device.

[0023] In one embodiment of the present invention, each PCB board 2 is provided with a power consumption element 11, and a boss 12 is provided on the outer surface of the first inner cavity. The boss 12 is attached to the power consumption element 11 through a thermal pad, so that the heat generated by the power consumption element 11 can be quickly absorbed.

[0024] In one embodiment of the present invention, it also includes a compensator 5 and a pump 6 disposed in the housing 1. The compensator 5 and the pump 6 are both connected to the liquid cooling pipeline 4. The compensator 5 is used to compensate for the change in the volume of the working fluid when the high and low temperatures of the fluid circuit change and the working fluid lost due to natural leakage. The pump 6 is used to provide power for the circulation of the liquid cooling working fluid.

[0025] In one embodiment of the present invention, a partition 7 is provided in the housing 1, and the partition 7 divides the cavity in the housing 1 into two. The PCB board 2 and the phase change energy storage cold plate 3 are located in the first cavity, and the compensator 5 and the pump 6 are located in the second cavity. In this way, the circuit part and the liquid cooling part can be separated to realize modular design, and the influence of leakage of the liquid cooling component on the circuit part can be effectively avoided.

[0026] In one embodiment of the present invention, a temperature control valve 8 is further included in the second cavity. The temperature control valve 8 is connected to the liquid cooling pipeline 4 and is used to control the flow rate of the liquid cooling fluid to control the temperature of the PCB board 2 .

[0027] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the phase change energy storage cold plate 3 includes a first cover plate 13, an intermediate plate 14 and a second cover plate 15. The first cover plate 13 and the intermediate plate 14 form a first inner cavity for accommodating a phase change energy storage material, and the second cover plate 15 and the intermediate plate 14 form a second inner cavity for accommodating a second liquid flow channel.

[0028] In some embodiments, the phase change energy storage cold plate 3 is a sandwich structure, and the first cover plate 13, the middle plate 14 and the second cover plate 15 can be connected into a whole by welding.

[0029] In one embodiment of the present invention, the first inner cavity is provided with a plurality of fins 16, and the phase change energy storage material is filled between two adjacent fins 16, so that the heat exchange can be enhanced.

[0030] In addition, an embodiment of the present invention further provides a self-storage thermal control method for satellite-borne communication equipment, which is applied to the system mentioned in any of the above embodiments, including:

[0031] A first liquid flow channel is provided inside the shell of the housing 1;

[0032] A phase change energy storage material is arranged in the first inner cavity inside the phase change energy storage cold plate 3 and a second liquid flow channel is arranged in the second inner cavity;

[0033] The liquid cooling medium is made to circulate through the second liquid flow channel, the liquid cooling pipeline 4 and the first liquid flow channel, so as to utilize the liquid cooling medium to circulate the heat of the phase change energy storage material that absorbs the heat of the PCB board 2 into the housing 1 and dissipate the heat to the external environment.

[0034] It can be understood that the method embodiment and system embodiment provided by the present invention are based on the same inventive concept and have the same beneficial effects, and the beneficial effects of the method embodiment will not be elaborated herein.

[0035] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical factors in the process, method, article or device including the elements.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-storage thermal control system for satellite-borne communication equipment, characterized in that: The invention comprises an outer shell (1), a plurality of PCB boards (2), a plurality of phase-change energy storage cold plates (3) and a liquid cooling pipeline (4); the plurality of PCB boards (2), the plurality of phase-change energy storage cold plates (3) and the liquid cooling pipeline (4) are all arranged in the outer shell (1); a first liquid flow channel is arranged inside the shell of the outer shell (1); a first inner cavity inside the phase-change energy storage cold plate (3) is provided with a phase-change energy storage material; a second inner cavity is provided with a second liquid flow channel; the first inner cavity is adjacent to the PCB board (2); the second inner cavity is opposite to the first inner cavity; the liquid cooling pipeline (4) is respectively connected to the first liquid flow channel and the second liquid flow channel; a liquid cooling medium circulates in the second liquid flow channel, the liquid cooling pipeline (4) and the first liquid flow channel; the liquid cooling medium is used to circulate the heat of the phase-change energy storage material that absorbs the heat of the PCB board (2) into the outer shell (1) and dissipate the heat to the external environment.

2. The system according to claim 1, characterized in that The inner surface of the outer shell (1) is provided with a multi-layer heat insulation component.

3. The system according to claim 2, characterized in that The outer surface of the housing (1) is provided with white paint.

4. The system according to claim 1, characterized in that Each of the PCB boards (2) is provided with a power dissipation element (11), and a boss (12) is provided on the outer surface of the first inner cavity, and the boss (12) is attached to the power dissipation element (11) via a thermal pad.

5. The system according to claim 1, characterized in that It also includes a compensator (5) and a pump (6) disposed in the housing (1); the compensator (5) and the pump (6) are both connected to the liquid cooling pipeline (4); the compensator (5) is used to compensate for changes in the volume of the working fluid when the fluid circuit changes between high and low temperatures and for working fluid lost due to natural leakage; and the pump (6) is used to provide power for the circulation of the liquid cooling working fluid.

6. The system according to claim 5, characterized in that A partition (7) is arranged in the shell (1), and the partition (7) divides the cavity in the shell (1) into two, the PCB board (2) and the phase change energy storage cold plate (3) are located in the first cavity, and the compensator (5) and the pump (6) are located in the second cavity.

7. The system according to claim 6, characterized in that It also includes a temperature control valve (8) located in the second cavity, the temperature control valve (8) is connected to the liquid cooling pipeline (4), and the temperature control valve (8) is used to control the flow rate of the liquid cooling fluid to control the temperature of the PCB board (2).

8. The system according to any one of claims 1 to 7, characterized in that: The phase change energy storage cold plate (3) comprises a first cover plate (13), an intermediate plate (14) and a second cover plate (15); the first cover plate (13) and the intermediate plate (14) form a first inner cavity for accommodating the phase change energy storage material; the second cover plate (15) and the intermediate plate (14) form a second inner cavity for accommodating the second liquid flow channel.

9. The system according to claim 8, characterized in that The first inner cavity is provided with a plurality of fins (16), and the phase-change energy storage material is filled between two adjacent fins (16).

10. A self-storage thermal control method for satellite-borne communication equipment, characterized in that: A system as claimed in any one of claims 1 to 9, comprising: A first liquid flow channel is arranged inside the shell of the housing (1); A phase-change energy storage material is arranged in a first inner cavity inside the phase-change energy storage cold plate (3), and a second liquid flow channel is arranged in a second inner cavity; The liquid cooling medium is caused to circulate through the second liquid flow channel, the liquid cooling pipeline (4) and the first liquid flow channel, so that the heat of the phase change energy storage material that absorbs the heat of the PCB board (2) is circulated into the housing (1) by using the liquid cooling medium, and the heat is dissipated to the external environment.

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