CN103456831B - Low rail plasma environment high pressure acid leaching arc discharge suppressing method - Google Patents
Low rail plasma environment high pressure acid leaching arc discharge suppressing method Download PDFInfo
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- CN103456831B CN103456831B CN201210177257.5A CN201210177257A CN103456831B CN 103456831 B CN103456831 B CN 103456831B CN 201210177257 A CN201210177257 A CN 201210177257A CN 103456831 B CN103456831 B CN 103456831B
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- arc discharge
- low rail
- high pressure
- plasma
- acid leaching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The present invention relates to low rail plasma environment high pressure acid leaching arc discharge suppressing method, be specially adapted to operate in the high pressure acid leaching in low rail space environment.This invention adopts solar cell circuit bare exposed conductor coating RTV silica gel or is embedded in substrate, the contact of insulated conductor and plasma; Optimal design battery circuit string spacing; Reduce the electric current of single serializer circuit and add isolating diode and isolate; Cover glass covers solar cell completely to block the contact at charged position and plasma; Ground simulation low rail plasma environment discharge test is adopted to verify.The invention solves high pressure acid leaching arc discharge in low rail plasma environment and suppress problem, improve the once electric discharge of high pressure acid leaching in low rail plasma environment and secondary arc discharge threshold value, improve the adaptability in low rail plasma environment.
Description
Technical field
The present invention relates to a kind of low rail plasma environment high pressure acid leaching arc discharge suppressing method, belong to spacecraft power supply system solar battery array technical field.
Background technology
The main space aircraft of China's manned astro-engineering is operated on the Low Earth Orbit of 300 ~ 500km height, this height district's space plasma mainly ionospheric plasma.The environment more complicated of 300 ~ 500km track, the density of plasma in this interval has individual peak value.The power supply of spacecraft is originated mainly solar battery array, along with spacecraft is to long-life needs, the power stage of solar battery array becomes increasing, in order to reduce the loss in long distance electrical transmission, reduce weight, need the novel high-pressure solar battery array adopting high efficiency structure light.Because velocity of electrons is more much larger than ion, Flight Vehicle Structure can electronegative position, the electronics random current arriving aircraft is more much larger than ionic current, and most of area of cell array and the conducting structure of connection can assemble ion, cause the net current on cell array and Flight Vehicle Structure to be zero.According to the feature of space environment, most of electric current that battery front is assembled is back bias voltage, and reach 100V and above high pressure acid leaching, it can produce arc discharge in low orbit plasma environment.Once electric discharge can cause power loss and electromagnetic interference, and secondary arc discharge can cause larger power loss and electromagnetic interference, damages solar cell circuit and even causes permanent short.Domestic existing technology is for high rail high-pressure rigid solar battery array electrostatic defending.Different due to high rail environment and low rail environment, the difference of solar battery array structure, so this technology be not suitable for low rail high pressure acid leaching.The present invention is directed to low rail high pressure acid leaching, solve low rail plasma environment solar battery array arc discharge and suppress problem.
Do not find and the explanation of technology similar to the present invention or report at present, not yet collect similar data both at home and abroad yet.
Summary of the invention
For overcoming prior art deficiency, problem to be solved by this invention realizes the arc discharge of high pressure acid leaching low rail plasma environment to suppress, and the validity of suppressing method is verified by discharge test, improve the adaptability of high pressure acid leaching in low rail plasma environment.
For solving the problems of the technologies described above, the present invention is directed to low rail high pressure acid leaching feature, propose low rail plasma environment arc discharge suppression and verification method: the method adopting solar cell circuit bare exposed conductor coating RTV silica gel, or circuit is embedded in substrate, the contact of insulated conductor and plasma, improve discharge threshold, reduce the generation of arc discharge; Optimize pieces of cloth design, make voltage between battery circuit maximum string be less than 55V, be less than secondary arc discharge threshold value; Optimize the design of battery circuit string spacing, improve secondary arc discharge threshold value, design string spacing 2mm; Single crosstalk pond modular circuit output current is less than 0.8A and adds isolating diode isolates, and reduces the maintenance electric current of secondary arc discharge, improve the voltage threshold of secondary arc discharge with this; Meet cover glass edge and exceed battery edge 0.1mm, cover solar cell completely, block the contact of battery and plasma, reduce the generation of arc discharge; Vacuum tank is adopted to simulate low rail vacuum environment, ECR type plasma source is adopted to produce plasma, simulate low rail plasma environment, solar battery array small specimen is placed in vacuum tank, carry out an arc discharge and secondary arc discharge analogue test, obtain a high pressure acid leaching arc discharge and secondary arc discharge voltage current threshold, complete the checking of the low rail plasma environment electric discharge of high pressure acid leaching.
Adopt arc discharge suppressing method of the present invention, effectively can solve the arc discharge suppression of high pressure acid leaching low rail plasma environment and validation problem, the present invention is adopted in low rail high pressure acid leaching design, develop the semi-rigid solar cell array that can fly in-orbit and have passed the higher flexible solar cell array of the discharge threshold of verification experimental verification, the adaptability of high pressure acid leaching in low rail plasma environment can be improved, reach and reduce its arc discharge in-orbit, stop the inhibition of secondary arc discharge in-orbit.
Accompanying drawing explanation
Fig. 1 semi-rigid solar cell plate schematic diagram
Fig. 2 flexible solar cell plate schematic diagram
Fig. 3 semi-rigid cell panel test specimen schematic diagram
Fig. 4 flexible battery plate test specimen schematic diagram
Fig. 5 single step of releasing electric test allocation plan
Fig. 6 secondary arc discharge test configurations figure
Fig. 7 single step of releasing power path schematic diagram
Fig. 8 secondary arc discharge path schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the method for solar cell circuit bare exposed conductor coating RTV silica gel 1 is adopted, the contact of insulated conductor and plasma.Semi-rigid high pressure sun cell panel and rigidity solar panel have relatively big difference, the battery module of semi-rigid solar cell array is fixed on grid panel, the bigger face glass cover plate 3 of physical dimension and back glass cover plate 4 are pasted, to be isolated completely the charged position be exposed in plasma environment (chip interconnect sheet 5---solar cell piece 7 edge) junction in the two sides of solar cell piece 7; Battery module is made up of 6 or 4 battery units (2 × 3 or 2 × 2 array); Guide to the busbar 6 at the back side from battery module front as electrical transmission, surface-coated RTV silica gel 1, realize exposed conductor and the isolation of plasma ambient.Controlling gap between adjacent cell string is 2mm.
Fig. 2 shows the execution mode of flexible solar cell plate, and flexible solar cell plate is made up of solar cell 8 and flexible base, board 11.Solar cell 8 is bonded on flexible base, board 11 by egative film glue 9, and the cover glass 10 of one piece of size slightly larger than battery is pasted in solar cell 8 front.Part solar cell 8 connecting circuit, on semi-rigid solar cell plate protection Design basis, is embedded in flexible base, board 11 by flexible solar cell plate, is formed with the flexible base, board 11 of pre-buried circuit, reduces the contact of energized conductor and plasma.
Arc discharge threshold voltage can be improved by above-mentioned execution mode, reduce the probability once discharged, suppress between adjacent block, secondary arc discharge to occur between string.Adopt the low rail plasma environment of ground simulation to carry out discharge test, the validity of above-mentioned high pressure acid leaching low rail plasma environment electric discharge suppressing method can be verified.
Be illustrated in figure 3 semi-rigid cell panel test specimen schematic diagram.Solar battery module installed by semi-rigid solar cell plate, is divided into ARRAY1 and ARRAY2 two circuit, battery module positive and negative electrode place and bare exposed conductor coating RTV silica gel 1, size 272mm × 391mm.
Be illustrated in figure 4 flexible battery plate test specimen schematic diagram.Flexible solar cell plate testpieces installs solar cell, positive and negative electrode place and bare exposed conductor coating RTV silica gel 1, size 130mm × 128mm.
Discharge test condition is implemented as follows:
A. vacuum tank air pressure: be not more than 2 × 10 under plasma environment
-2pa;
B. plasma density: 10
12~ 10
13m
-3;
C. plasma temperature :≤5eV;
D. temperature: cell array temperature <42 DEG C.
Be illustrated in figure 5 single step of releasing electric test allocation plan.Testing equipment comprises the vacuum tank 12 of diameter 1.5m, ECR type plasma source 13, DC power supply 14, temperature sensor 15, pulse-generating circuit 16, oscillosynchroscope 17, PC 18, video camera 19 etc. that 0 ~ 600V is adjustable.
Test specimen is semi-rigid cell panel, comprises battery module 20 and substrate, and substrate outward flange is framework 21.In test, substrate is also wanted biasing and separates with circuit to test, recorded position and the intensity image of electric discharge with video camera 19 by watch window 22, measure the voltage and current of discharge loop, CP1 and CP2 is two electric current measuring points, by oscilloscope 17 pick-and-place electrical waveform, and Storage and Processing can be carried out on PC 18.Be illustrated in figure 7 single step of releasing power path schematic diagram.
Be illustrated in figure 6 secondary arc discharge test configurations figure.Compared with single step of releasing electric test, testing equipment will increase solar battery array simulator 23(0 ~ 300V/0 ~ 5A), protective circuit 24 and slide-wire rheostat 25.Apply short circuit current 0.9A between string, between string, voltage 50V rises, the experimental condition that back bias voltage-100V rises.Record position and the intensity image of electric discharge with video camera 19 in test.CP1 ~ CP4 is four electric current measuring points, by oscilloscope 18 pick-and-place electrical waveform.Be illustrated in figure 8 secondary arc discharge path schematic diagram.
Visible, adopt and present invention successfully solves the arc discharge suppression of high pressure acid leaching low rail plasma environment and validation problem.
In the design of low rail high pressure acid leaching, adopt the present invention, develop the semi-rigid solar cell array that can fly in-orbit and the higher flexible solar cell array of the discharge threshold that have passed verification experimental verification.The adaptability of high pressure acid leaching in low rail plasma environment can be improved, reach and reduce its arc discharge in-orbit, stop the inhibition of secondary arc discharge in-orbit.
Claims (1)
1. be applicable to a low rail plasma environment high pressure acid leaching arc discharge suppressing method, it is characterized in that:
Adopt the method for solar cell circuit bare exposed conductor coating RTV silica gel, or be embedded in substrate by circuit, the contact of insulated conductor and plasma, improves discharge threshold, reduces the generation of arc discharge;
Optimize pieces of cloth design, make voltage between battery circuit maximum string be less than 55V, be less than secondary arc discharge threshold value;
Optimize the design of battery circuit string spacing, improve secondary arc discharge threshold value, design string spacing 2mm;
Single crosstalk pond modular circuit output current is less than 0.8A and adds isolating diode isolates, and reduces the maintenance electric current of secondary arc discharge, improve the voltage threshold of secondary arc discharge with this;
Meet cover glass edge and exceed battery edge 0.1mm, cover solar cell completely, block the contact of battery and plasma, reduce the generation of arc discharge;
Vacuum tank is adopted to simulate low rail vacuum environment, ECR type plasma source is adopted to produce plasma, simulate low rail plasma environment, solar battery array small specimen is placed in vacuum tank, carry out an arc discharge and secondary arc discharge analogue test, obtain a high pressure acid leaching arc discharge and secondary arc discharge voltage current threshold, complete the checking of the low rail plasma environment electric discharge of high pressure acid leaching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210177257.5A CN103456831B (en) | 2012-06-01 | 2012-06-01 | Low rail plasma environment high pressure acid leaching arc discharge suppressing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210177257.5A CN103456831B (en) | 2012-06-01 | 2012-06-01 | Low rail plasma environment high pressure acid leaching arc discharge suppressing method |
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| CN103456831A CN103456831A (en) | 2013-12-18 |
| CN103456831B true CN103456831B (en) | 2015-11-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533354A (en) * | 2016-12-05 | 2017-03-22 | 上海空间电源研究所 | Low-orbit solar cell circuit |
| CN106784101A (en) * | 2016-12-08 | 2017-05-31 | 上海空间电源研究所 | Discharge test part of low orbit |
| CN107681977B (en) * | 2017-07-05 | 2019-09-17 | 上海空间电源研究所 | Verify the in-orbit exposure test part of the low rail plasma environment guard technology of solar battery array |
| CN113114102B (en) * | 2021-03-18 | 2022-05-24 | 中国空间技术研究院 | Solar wing grounding circuit based on anti-static and fault isolation |
| CN113533914A (en) * | 2021-07-09 | 2021-10-22 | 中国人民解放军陆军工程大学 | Electrostatic pulse induced electrostatic discharge experimental system and method in vacuum environment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228662B1 (en) * | 1999-03-24 | 2001-05-08 | Kaneka Corporation | Method for removing short-circuited sections of a solar cell |
| CN101483204A (en) * | 2009-02-13 | 2009-07-15 | 苏州富能技术有限公司 | Thin-film solar cell module in series parallel connection structure and processing method thereof |
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2012
- 2012-06-01 CN CN201210177257.5A patent/CN103456831B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228662B1 (en) * | 1999-03-24 | 2001-05-08 | Kaneka Corporation | Method for removing short-circuited sections of a solar cell |
| CN101483204A (en) * | 2009-02-13 | 2009-07-15 | 苏州富能技术有限公司 | Thin-film solar cell module in series parallel connection structure and processing method thereof |
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