CN111824462B - Secondary unlocking device and method for step-by-step expansion of flexible solar cell array - Google Patents
Secondary unlocking device and method for step-by-step expansion of flexible solar cell array Download PDFInfo
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- CN111824462B CN111824462B CN202010501457.6A CN202010501457A CN111824462B CN 111824462 B CN111824462 B CN 111824462B CN 202010501457 A CN202010501457 A CN 202010501457A CN 111824462 B CN111824462 B CN 111824462B
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- isolation plate
- unlocking device
- solar cell
- hinge
- cell array
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000002788 crimping Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/42—Arrangements or adaptations of power supply systems
- B64G1/44—Arrangements or adaptations of power supply systems using radiation, e.g. deployable solar arrays
- B64G1/443—Photovoltaic cell arrays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
Abstract
The invention relates to a secondary unlocking device and a secondary unlocking method for step-by-step expansion of a flexible solar cell array. The secondary unlocking device comprises an upper isolation plate, a lower isolation plate, a sheet type hinge, a spring rope assembly and the like. The secondary unlocking device can meet the requirement that the spacecraft can expand the flexible solar cell array step by step in different stages of orbital transfer, butt joint, on-orbit operation and the like.
Description
Technical Field
The invention relates to the technical field of spacecraft solar cell arrays, in particular to a flexible solar cell array step-by-step unfolding function.
Background
The flexible solar cell array has the characteristics of long unfolding length and low fundamental frequency, and the attitude control of the spacecraft in the unfolding state is very difficult, particularly the attitude control of orbital transfer and butt joint. Therefore, if the flexible solar cell array can be partially unfolded after the first step of unfolding before orbital transfer and butt joint of the spacecraft, the flexible solar cell array has shorter unfolding length and higher fundamental frequency to meet the attitude control requirement of the spacecraft, and can be completely unfolded after orbital transfer and butt joint to meet the power generation requirement of the spacecraft, the contradiction between the low unfolding fundamental frequency of the flexible solar cell array and the attitude control of the spacecraft during orbital transfer and butt joint can be solved.
The flexible solar cell array technology is a space technology at the leading edge, no description or report of inventions related to the step-by-step expansion of the flexible solar cell array or similar related technologies is found at present, and similar domestic data is not collected yet.
Disclosure of Invention
The problems solved by the invention are as follows: the defects of the prior art are overcome, the secondary unlocking device and the secondary unlocking method for the step-by-step unfolding of the flexible solar cell array are provided, and the problem of attitude control of spacecraft orbit change and butt joint caused by that the flexible solar cell array can only be unfolded for one fixed length when being in orbit and the fundamental frequency of the flexible solar cell array is too low is solved.
The technical scheme of the invention is as follows: a secondary unlocking device for step-by-step unfolding of a flexible solar cell array comprises: the device comprises an upper isolation plate, a lower isolation plate, a sheet type hinge, a spring rope assembly, an adjustable limiting block of a reel and an inhaul cable limiting block;
the upper isolation plate and the lower isolation plate are connected through the sheet type hinge, so that the function that the upper isolation plate and the lower isolation plate are folded to be unfolded by 180 degrees is realized; four sets of spring rope assemblies are installed in the embedded interface of the lower isolation plate, the embedded concave embedded part is embedded in the position, corresponding to the installation position of the spring rope assemblies, of the upper isolation plate, and the part, protruding out of the lower isolation plate, of the spring rope assemblies is ensured not to generate interference when the upper isolation plate and the lower isolation plate are folded; the adjustable limiting block of the reel is arranged at the corresponding joint of the lower isolation plate, and the outer end face of the adjustable limiting block of the reel is adjusted under the locking state of the secondary unlocking device to enable the adjustable limiting block to be attached to the matching surface of the spring rope assembly for limiting, so that the pulling-out direction of the spring rope assembly is limited.
The overall dimension of the upper isolation plate and the lower isolation plate is consistent with the overall dimension of the external flexible battery plate.
The sheet-type hinge comprises a sheet-type female hinge, a sheet-type male hinge and a rotating shaft; the sheet type female hinge is installed at the hinge support of the upper isolation plate, the sheet type male hinge is installed at the hinge support of the lower isolation plate, and the rotating shaft penetrates through hinge holes of the sheet type female hinge and the sheet type male hinge.
When the sheet-type hinge is folded, the mounting screw holes of the sheet-type female hinge and the sheet-type male hinge are staggered with each other, so that the effect of reducing the folding height is achieved.
The spring rope component comprises a reel, a volute spring reel connecting piece, a reel fixing limiting block, a steel wire rope, a compression joint pin and a steel wire rope copper sleeve; the rotating end of the spiral spring is connected with the winding wheel through a spiral spring winding wheel connecting piece, and the fixed end of the spiral spring is connected with the corresponding interface of the lower isolation plate; the fixed end of the steel wire rope is limited by the crimping pin and the reel, the steel wire rope penetrates out of the hollow embedded part of the lower isolation plate, and the free end of the steel wire rope penetrates through the steel wire rope copper sleeve to form a closed inhaul cable by the crimping pin; the reel fixing limiting block is connected with the reel, and the secondary unlocking device is used for limiting the pulling-out direction of the steel wire rope in a locking state.
In the method for expanding the flexible solar cell array step by using the secondary unlocking device, in the flexible solar cell array expanded step by step, the upper isolation plate is connected with an external flexible cell panel array used for the first-step expansion, and the lower isolation plate is connected with an external flexible cell panel array used for the second-step expansion; the method comprises the following specific steps:
when the flexible solar cell array which is unfolded step by step is in a first-step unfolding state, a steel wire rope copper sleeve of a guy cable of the secondary unlocking device is hooked on an external secondary lock hook arc section, and is limited by an external guy cable stop block; at the moment, the flexible battery panel array which is not unfolded in the second external step is limited on the outer side of the lower isolation plate of the secondary unlocking device;
when the flexible solar cell array which is unfolded step by step is unfolded in the second step, the external secondary lock hook rotates until the steel wire rope copper sleeve of the inhaul cable of the secondary unlocking device is separated from the circular arc section of the external secondary lock hook, and the steel wire rope of the inhaul cable of the secondary unlocking device is retracted into the lower isolation plate under the action of the winding wheel and the spiral spring of the spring rope assembly; and unlocking by the secondary unlocking device, and unfolding the flexible battery panel array formed by the unfolded flexible battery panels outside in the second step.
The invention has the beneficial effects that:
1. the invention provides a secondary unlocking device for the step-by-step unfolding of a flexible solar cell array, which only has the capability of unfolding the flexible solar cell array after the flexible solar cell array enters a track to a fixed length. The spring rope component is matched with an external unlocking mechanism to realize the capability of unlocking and releasing the flexible battery panel array of the limiting part, so that the flexible solar battery array has the capability of completely unfolding and keeping the structural rigidity. The fundamental frequency of the flexible solar cell array expanded in the first step meets the attitude control requirements of orbital transfer and butt joint of the spacecraft, and the length of the flexible solar cell array expanded in the second step meets the power generation requirement of the spacecraft;
2. the invention provides a secondary unlocking device for the step-by-step unfolding of a flexible solar cell array, which can enable the flexible solar cell panel array positioned on the outer side of an upper isolation plate to be unfolded independently and the flexible solar cell panel array positioned on the outer side of a lower isolation plate to be in a folding limit state at the same time. And the flexible solar panel array on the outer side of the lower isolation plate is protected under the working conditions of orbit changing and butt joint of the spacecraft.
Drawings
FIG. 1 is a schematic structural diagram of a secondary unlocking device for step-by-step deployment of a flexible solar cell array according to an embodiment of the present invention
FIG. 2 is a schematic enlarged partial view of a secondary unlocking device for step-by-step deployment of a flexible solar cell array according to an embodiment of the present invention
FIG. 3 is a schematic structural diagram of a secondary unlocking device spring cable assembly for step-by-step deployment of a flexible solar cell array according to an embodiment of the present invention
Fig. 4 is a schematic structural diagram of a secondary unlocking device for step-by-step unfolding of a flexible solar cell array, which is applied to the flexible solar cell array according to an embodiment of the invention. Fig. 4a is a schematic diagram of the position relationship between the secondary unlocking device and the unfolded flexible solar panel array in the first-step unfolding state of the flexible solar panel array; FIG. 4b is a schematic diagram showing the connection relationship between the secondary unlocking device and the external flexible solar cell array mechanism component in the first-step unfolded state of the flexible solar cell array; fig. 4c is a state of the secondary unlocking device after the flexible solar cell array releases the limit of the flexible solar cell panel array of the second unfolding part.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1, fig. 2 and fig. 3 are secondary unlocking devices for step-by-step unfolding of a flexible solar cell array according to the invention. As shown in FIG. 1, the secondary unlocking device includes an upper spacer 71, a lower spacer 72, a blade-type hinge 73, a spring-cord assembly 74, a reel adjustable stop 75, and a cable stop 76. The upper isolation plate 71 and the lower isolation plate 72 are connected through a sheet type hinge 73, and the function that the upper isolation plate 71 and the lower isolation plate 72 are folded to be unfolded by 180 degrees is achieved. The external dimensions of the upper and lower isolation plates 71 and 72 are identical to the external dimensions of the external flexible battery plate 77. Four sets of spring rope assemblies 74 are installed in the embedded interfaces of the lower isolation plate 72, the upper isolation plate 71 is embedded with the embedded parts corresponding to the installation positions of the spring rope assemblies 74, and the parts, protruding out of the lower isolation plate 72, of the spring rope assemblies 74 are ensured not to interfere when the upper isolation plate 71 and the lower isolation plate 72 are folded and folded. The reel adjustable limiting block 75 is installed at the corresponding interface of the lower isolation plate 72, and the outer end face of the reel adjustable limiting block 75 is adjusted under the locking state of the secondary unlocking device to be attached to the matching surface of the spring rope assembly 74 for limiting, so that the pulling-out direction of the spring rope assembly 74 is limited.
As shown in fig. 2, the sheet-type hinge 73 includes a sheet-type female hinge 731, a sheet-type male hinge 732 and a rotation shaft 733, the sheet-type female hinge 731 is installed at the hinge support of the upper partition plate 71, the sheet-type male hinge 732 is installed at the hinge support of the lower partition plate 72, and the rotation shaft 733 passes through the hinge holes of the sheet-type female hinge 731 and the sheet-type male hinge 732. When the sheet-type hinge 73 is folded, the mounting screw holes of the sheet-type female hinge 731 and the sheet-type male hinge 732 are staggered to achieve the effect of reducing the folded height.
As shown in fig. 3, the spring cable assembly 74 includes a reel 741, a volute spring 742, a volute spring reel connector 743, a reel fixing stopper 744, a cable 745, a crimp stud 746, and a cable copper 747; the rotating end of the volute spring 742 is connected with a reel 741 through a volute spring reel connector 743, and the fixed end of the volute spring 742 is connected with a corresponding interface of the lower isolation plate 72; the fixed end of the steel wire rope 745 is limited by a crimping pin 746 and a winding wheel 741, the steel wire rope 745 penetrates out of a hollow embedded part of the lower isolation plate 72, and the free end of the steel wire rope 745 penetrates through a steel wire rope copper sleeve 747 and forms a closed inhaul cable by the crimping pin 746; the reel fixing stopper 744 is connected to the reel 741, and restricts the pull-out direction of the wire rope 745 in the secondary unlocking device locked state.
Fig. 4 is a schematic structural diagram of the secondary unlocking device for the step-by-step unfolding of the flexible solar cell array, which is applied to the flexible solar cell array. As shown in fig. 4a, in the step-by-step unfolded flexible solar cell array, the upper isolation plate 71 of the secondary unlocking device is connected with the external flexible cell panel array composed of the flexible cell panels 77 for the first step of unfolding, and the lower isolation plate 72 is connected with the external flexible cell panel array composed of the flexible cell panels 77 for the second step of unfolding. As shown in fig. 4b, when the flexible solar cell array unfolded step by step is in the first step unfolded state, the steel wire rope copper sleeve 747 of the cable of the secondary unlocking device is hooked on the arc segment of the external secondary locking hook 78, and is limited by the external cable stopper 79. The flexible panel array of now external second step unfolded flexible panels 77 is confined to the outside of the secondary unlocking means lower spacer 72. As shown in fig. 4c, when the flexible solar cell array is unfolded in the second step, the external secondary locking hook 78 rotates until the wire rope copper sleeve 747 of the cable of the secondary unlocking device is separated from the arc segment of the external secondary locking hook 78, and the wire rope 745 of the cable of the secondary unlocking device is retracted into the lower isolation plate 72 under the action of the winding wheel 741 and the spiral spring 742 of the spring rope assembly 74. And the secondary unlocking device unlocks, and the flexible battery panel array formed by the unfolded flexible battery panels outside the second step can be unfolded in the second step.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A secondary unlocking device for step-by-step unfolding of a flexible solar cell array is characterized by comprising: an upper isolation plate (71), a lower isolation plate (72), a sheet type hinge (73), a spring rope assembly (74), a reel adjustable limiting block (75) and a cable limiting block (76); the upper isolation plate (71) is connected with an external flexible battery panel array used for first-step unfolding, and the lower isolation plate (72) is connected with an external flexible battery panel array used for second-step unfolding; the spring rope assembly (74) comprises a reel (741), a volute spring (742), a volute spring reel connecting piece (743), a reel fixing limiting block (744), a steel wire rope (745), a compression joint stud (746) and a steel wire rope copper sleeve (747);
the upper isolation plate (71) and the lower isolation plate (72) are connected through a sheet type hinge (73), so that the function that the upper isolation plate (71) and the lower isolation plate (72) are folded to be unfolded by 180 degrees is realized; four sets of spring rope assemblies (74) are arranged in the embedded interface of the lower isolation plate (72), the embedded concave embedded part is embedded in the upper isolation plate (71) corresponding to the installation position of the spring rope assemblies (74), and the part of the spring rope assemblies (74) protruding out of the lower isolation plate (72) is ensured not to generate interference when the upper isolation plate (71) and the lower isolation plate (72) are folded and folded; the reel adjustable limiting block (75) is installed at the corresponding interface of the lower isolation plate (72), and the outer end face of the reel adjustable limiting block (75) is adjusted under the locking state of the secondary unlocking device to be attached to the matching surface of the spring rope component (74) for limiting, so that the pulling-out direction of the steel wire rope (745) is limited;
the rotating end of the volute spring (742) is connected with a reel (741) through a volute spring reel connecting piece (743), and the fixed end of the volute spring (742) is connected with a corresponding interface of the lower isolation plate (72); the fixed end of the steel wire rope (745) is limited by a crimping pin (746) and the reel (741), the steel wire rope (745) penetrates out of a hollow embedded part of the lower isolation plate (72), and the free end of the steel wire rope (745) penetrates through a steel wire rope copper sleeve (747) to form a closed inhaul cable by the crimping pin (746); the reel fixing limit block (744) is connected with the reel (741), and limits the pull-out direction of the steel wire rope (745) in the locking state of the secondary unlocking device.
2. The secondary unlocking device for the stepwise deployment of the flexible solar cell array according to claim 1, wherein: the external dimensions of the upper isolation plate (71) and the lower isolation plate (72) are consistent with the external dimensions of an external flexible battery plate (77).
3. The secondary unlocking device for the stepwise deployment of the flexible solar cell array according to claim 1, wherein: the sheet-type hinge (73) comprises a sheet-type female hinge (731), a sheet-type male hinge (732) and a rotating shaft (733); the sheet type female hinge (731) is arranged at the hinge support of the upper isolation plate (71), the sheet type male hinge (732) is arranged at the hinge support of the lower isolation plate (72), and the rotating shaft (733) penetrates through the hinge holes of the sheet type female hinge (731) and the sheet type male hinge (732).
4. The secondary unlocking device for the stepwise deployment of the flexible solar cell array according to claim 3, wherein: when the sheet-type hinge (73) is folded, the mounting screw holes of the sheet-type female hinge (731) and the sheet-type male hinge (732) are staggered with each other, so that the effect of reducing the folding height is achieved.
5. A method for the step-by-step unfolding of a flexible solar cell array by using the secondary unlocking device of any one of claims 1 to 4, wherein in the step-by-step unfolded flexible solar cell array, the upper isolation plate (71) is connected with an external flexible cell panel array for the first step of unfolding, and the lower isolation plate (72) is connected with an external flexible cell panel array for the second step of unfolding; the method is characterized by comprising the following specific steps:
when the flexible solar cell array unfolded step by step is in a first-step unfolding state, a steel wire rope copper sleeve (747) of a guy cable of the secondary unlocking device is hooked on an arc section of an external secondary locking hook (78), and is limited by an external guy cable stop block (79); at the moment, the external second-step unfolded flexible battery panel array is limited to the outer side of the isolation plate (72) under the secondary unlocking device;
when the flexible solar cell array which is unfolded step by step is unfolded in the second step, the external secondary locking hook (78) rotates until the steel wire rope copper sleeve (747) of the inhaul cable of the secondary unlocking device is separated from the circular arc section of the external secondary locking hook (78), and the steel wire rope (745) of the inhaul cable of the secondary unlocking device is retracted into the lower isolation plate (72) under the action of the winding wheel (741) and the volute spring (742) of the spring rope assembly (74); and unlocking by the secondary unlocking device, and unfolding the flexible battery panel array formed by the unfolded flexible battery panels outside in the second step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010501457.6A CN111824462B (en) | 2020-06-04 | 2020-06-04 | Secondary unlocking device and method for step-by-step expansion of flexible solar cell array |
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| CN202010501457.6A CN111824462B (en) | 2020-06-04 | 2020-06-04 | Secondary unlocking device and method for step-by-step expansion of flexible solar cell array |
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| CN111824462B true CN111824462B (en) | 2021-09-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113060304B (en) * | 2021-03-26 | 2022-07-22 | 上海卫星工程研究所 | T-shaped solar cell array applied to microsatellite |
| CN114413936A (en) * | 2021-11-09 | 2022-04-29 | 上海宇航系统工程研究所 | Rotary multi-angle unlocking in-place signal trigger device |
| CN115196049A (en) * | 2022-07-29 | 2022-10-18 | 上海宇航系统工程研究所 | Large-area flexible solar cell wing capable of being unfolded step by step and secondarily |
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| CN103662101B (en) * | 2013-11-20 | 2015-11-18 | 上海宇航系统工程研究所 | Solar wing device is drawn in a kind of repeatedly expansion of applicable lunar surface environment in |
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| US8066227B2 (en) * | 2006-03-31 | 2011-11-29 | Composite Technology Development, Inc. | Deployable structures having collapsible structural members |
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