CN207896937U - A kind of device of detection solar photovoltaic assembly power attenuation - Google Patents
A kind of device of detection solar photovoltaic assembly power attenuation Download PDFInfo
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- CN207896937U CN207896937U CN201820051434.8U CN201820051434U CN207896937U CN 207896937 U CN207896937 U CN 207896937U CN 201820051434 U CN201820051434 U CN 201820051434U CN 207896937 U CN207896937 U CN 207896937U
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- photovoltaic assembly
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model provides a kind of device of detection solar photovoltaic assembly power attenuation, including：Solar photovoltaic assembly ontology, power device and illumination apparatus；Wherein：Power device is connected with solar photovoltaic assembly ontology, and power device is passed through solar photovoltaic assembly ontology in the electric current of pre-set current value, and solar photovoltaic assembly ontology receives the light source for the default intensity of illumination that illumination apparatus is sent out in preset time.The utility model can shorten the period of solar photovoltaic assembly decaying by indoor light decay with electric current is passed through, it is tested compared to conventional illumination, the time that test can be greatly shortened tighter reflects the compound influence to battery component power attenuation of boron oxygen of solar photovoltaic assembly P-type crystal silicon inside battery from internal-response mechanism.Design early period to power station photovoltaic system, more can quickly and effectively evaluate the component fade performance of different technologies, to there is efficient, constructive prediction on design selection.
Description
Technical field
The utility model is related to photovoltaic module technical field more particularly to a kind of detection solar photovoltaic assembly power attenuations
Device.
Background technology
In recent years, each bound pair photovoltaic module photo attenuation problem is increasingly paid close attention to, the reason is that group caused by photo attenuation
The range that part power attenuation is received considerably beyond client, this allows for module manufacturer and is faced with potential risk of compensation.It is early
Before more than 40 years, Fischer and Pschunde observe photo attenuation phenomenon in boron-doping Cz-Si solar cells at first.Illumination
The properties of battery are made constantly to decay, finally decaying tends towards stability；For battery by 200 DEG C of annealings, battery is every electrically
Can get back recovery.
Within the quite a while, this optical attenuation of Cz-Si (boron-doping) battery and the mechanism of annealing recovery never have
It is explained.The seventies, the eighties caused by nonequilibrium carrier it is proposed that applied it is proposed that excessively several metal impurities defect models
Master-acceptor makes Cz-Si solar cells be polluted and decay by Fe decomposition model, the i.e. photo induced decomposition of FeB.But these moulds
No one of type can explain optical attenuation and recovery phenomenon observed by Fischer and Pschunde completely.Into 90 years
In generation, research, which concentrates on, understands fully light decay mechanism, is confirmed by items experiment：Boron and interstitial oxygen concentration are to cause the Cz-Si sun in crystalline silicon
The principal element of energy battery LID.In current traditional Cz monocrystalline silicon, oxygen is main impurity in crystalline silicon, and elemental oxygen is in silicon
Interstitial positions are in body.Boron-doping Cz-Si solar cells are injected by illumination or electric current, and the boron and oxygen in silicon body form boron oxygen
Complex results in battery efficiency and electrical property declines, but by annealing, boron oxygen is compound to make minority carrier life time decline
Body separates, and minority carrier life time can restore.
Electroluminescent relaxation phenomenon is general using p-type boron-doping Czochralski (CZ) silicon as the pulling of crystals silicon solar cell of substrate
All over an existing phenomenon, i.e. battery will appear the phenomenon that transfer efficiency decays in the case where electric current injects.Pulling of silicon single crystal
It grows required silica crucible and is reacted with the silicon liquid melted under high temperature and introduce oxygen atom, in the process of monocrystalline silicon solidification
In, about 1% SiO, which is decomposed, to be generated oxygen and is entered in silicon crystal lattice in the form of the state of gap.Two interstitial oxygen concentration atomic buildings
Oxygen dimer (Oxygen dimer, O 2i) is a kind of quickly diffusion, in extraneous injected minority carrier, double oxygen atoms
It is abnormal in the attraction of Coulomb force and lattice when meeting quick long-range in lattice is spread around the relatively-stationary displacement boron atom of arrival
Captured by boron atom under the compensation collective effect of change, finally generate efficient complex centre BsO2i, only exist simultaneously boron and
Can just there be electroluminescent relaxation phenomenon in the crystalline silicon of oxygen, therefore it is considered as a kind of complex being combined by boron and oxygen
Caused by (referred to as " boron oxygen complex ").The energy level of boron oxygen complex is located between E v+0.35eV and E c-0.45eV, is deep
Energy level complex centre, the excess that can effectively capture and be generated in compound solar cell under light illumination, to significantly drop
Low minority carrier lifetime and shortening minority carrierdiffusion length, ultimately cause the decaying of cell piece photoelectric conversion efficiency.
In existing detection technique, generally it is exposed to the sun solar photovoltaic assembly using outdoor and studies the characteristic of photo attenuation, so
And test not it is considered that solar photovoltaic assembly influence of the power generation situation to electroluminescent decaying outdoors, and in the case of open air, too
The factor that the decaying of positive energy photovoltaic module is influenced by weather is bigger, and 1 month may be needed by carrying out the period of the outdoor needs that are exposed to the sun
To some months etc..
Utility model content
In view of this, the utility model provides a kind of device of detection solar photovoltaic assembly power attenuation, pass through room
Interior light decay can shorten the period of solar photovoltaic assembly decaying with electric current is passed through, and be tested compared to conventional illumination, can be significantly
The time for shortening test, tighter reflect solar photovoltaic assembly P-type crystal silicon inside battery from internal-response mechanism
The compound influence to battery component power attenuation of boron oxygen.Design early period to power station photovoltaic system, more can quickly and effectively assess
The component fade performance for going out different technologies, to there is efficient, constructive prediction on design selection.
The utility model provides a kind of device of detection solar photovoltaic assembly power attenuation, including：Photovoltaic
Component body, power device and illumination apparatus；Wherein：
The power device is connected with the solar photovoltaic assembly ontology, and the power device is to the photovoltaic
Component body is passed through the electric current of pre-set current value；
The solar photovoltaic assembly ontology receives the default intensity of illumination that the illumination apparatus is sent out in preset time
Light source.
Preferably, the device of the detection solar photovoltaic assembly power attenuation further includes：
Detect the short circuit current test device of the solar photovoltaic assembly body short electric current.
Preferably, the electric current of the pre-set current value is 1~1.5 times of the short circuit current.
Preferably, the default intensity of illumination is 1000kw/m2~3000kw/m2。
Preferably, the preset time is 20~60 hours.
Preferably, the illumination apparatus includes：Solar energy analog light source.
Preferably, the solar energy analog light source is xenon lamp.
Preferably, the solar energy analog light source is halogen lamp.
It can be seen from the above technical proposal that the utility model provides a kind of detection solar photovoltaic assembly power attenuation
Device, including：Solar photovoltaic assembly ontology, power device and illumination apparatus；Wherein：Power device and photovoltaic
Component body is connected, and power device is passed through solar photovoltaic assembly ontology the electric current of pre-set current value, solar photovoltaic assembly
Ontology receives the light source for the default intensity of illumination that illumination apparatus is sent out in preset time.By indoor light decay and it is passed through electric current
The period that solar photovoltaic assembly decaying can be shortened tests compared to conventional illumination, can greatly shorten the time of test, from
Internal-response mechanism tighter reflects that the boron oxygen of solar photovoltaic assembly P-type crystal silicon inside battery is compound to battery component
The influence of power attenuation.Design early period to power station photovoltaic system, the component that more can quickly and effectively evaluate different technologies decline
Subtract performance, to there is efficient, constructive prediction on design selection.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of knot of the device embodiment 1 of detection solar photovoltaic assembly power attenuation disclosed by the utility model
Structure schematic diagram；
Fig. 2 is a kind of knot of the device embodiment 2 of detection solar photovoltaic assembly power attenuation disclosed by the utility model
Structure schematic diagram.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1, for a kind of dress of detection solar photovoltaic assembly power attenuation disclosed in the utility model embodiment 1
It sets, including：Solar photovoltaic assembly ontology 10, power device 11 and illumination apparatus 12；Wherein：
Power device 11 is connected with solar photovoltaic assembly ontology 10, and power device 11 is to solar photovoltaic assembly ontology 10
It is passed through the electric current of pre-set current value；
Solar photovoltaic assembly ontology 10 receives the light for the default intensity of illumination that illumination apparatus 12 is sent out in preset time
Source.
In the above-described embodiments, logical first when needing to carry out power attenuation test to solar photovoltaic assembly ontology 10
The power device 11 being connected with solar photovoltaic assembly ontology 10 is crossed, certain electricity is passed through to solar photovoltaic assembly ontology 10
Stream, that is, be passed through the electric current of pre-set current value.Meanwhile by the illumination apparatus of installation 12 in preset time to photovoltaic group
Part ontology 10 carries out the irradiation of certain intensity of illumination, and solar photovoltaic assembly ontology 10 receives illumination apparatus in preset time
The light source of the 12 default intensities of illumination sent out.The P-type crystal silicon battery of solar photovoltaic assembly ontology 10 is passed through by illumination
After certain electric current, two gap oxygen atoms form O2i dimers, and O2i is spread quickly, and Bs-O2i complexs are formed with Bs, should
Boron oxygen easily captures few son so that minority carrier life time declines, and efficiency reduces, if simultaneously P-type crystal silicon battery component be passed through it is certain
Electric current is simultaneously irradiated with the light of certain intensity, can shorten the boron oxygen compound time, improves the quantity of boron oxygen complex, battery
The efficiency of component can reduce more, and it is multiple by photo attenuation and boron oxygen more to reflect that solar photovoltaic assembly generates electricity outdoors comprehensively
The influence of conjunction is very helpful to the assessment of solar photovoltaic assembly performance.
As shown in Fig. 2, for a kind of dress of detection solar photovoltaic assembly power attenuation disclosed in the utility model embodiment 2
It sets, including：Solar photovoltaic assembly ontology 20, power device 21, illumination apparatus 22 and short circuit current test device 23；Wherein：
Short circuit current test device 23 is used to detect the short circuit current of solar photovoltaic assembly ontology 20；
Power device 21 is connected with solar photovoltaic assembly ontology 20, and power device 21 is to solar photovoltaic assembly ontology 20
It is passed through the electric current of pre-set current value；
Solar photovoltaic assembly ontology 20 receives the light for the default intensity of illumination that illumination apparatus 22 is sent out in preset time
Source.
In the above-described embodiments, logical first when needing to carry out power attenuation test to solar photovoltaic assembly ontology 20
It crosses short-circuit current testing device 23 and short circuit current test is carried out to solar photovoltaic assembly ontology 20, obtain solar photovoltaic assembly
The short circuit current of ontology 20.
Then, by the power device 21 being connected with solar photovoltaic assembly ontology 20, to solar photovoltaic assembly ontology
20 are passed through certain electric current, that is, are passed through the electric current of pre-set current value.Wherein, the electric current for the pre-set current value being passed through can be test
1~1.5 times of obtained short circuit current.
Meanwhile certain light is carried out to solar photovoltaic assembly ontology 20 in preset time by the illumination apparatus of installation 22
According to the irradiation of intensity, it is strong to receive the default illumination that illumination apparatus 22 is sent out in preset time for solar photovoltaic assembly ontology 20
The light source of degree.Wherein, default intensity of illumination can be 1000kw/m2~3000kw/m2, illumination preset time can be 20~60
Hour.The P-type crystal silicon battery of solar photovoltaic assembly ontology 20 by illumination after being passed through certain electric current, two interstitial oxygen concentrations
Atom forms O2i dimers, and O2i is spread quickly, forms Bs-O2i complexs with Bs, which easily captures few son so that few
Sub- service life declines, and efficiency reduces, if simultaneously P-type crystal silicon battery component be passed through certain electric current and with the light of certain intensity into
Row irradiation, can shorten the boron oxygen compound time, improve the quantity of boron oxygen complex, the efficiency of battery component can reduce it is more,
It can more reflect that solar photovoltaic assembly is generated electricity outdoors by photo attenuation and boron oxygen is compound is influenced comprehensively, to photovoltaic group
The assessment of part performance is very helpful.
In the above-described embodiments, illumination apparatus may include solar energy analog light source, and light source can simulate full light
The xenon lamp or halogen lamp of spectrum.
In order to more specifically emphasize that the independence implemented, this specification are related to number of modules or unit.For example, mould
Block or unit can be realized that the hardware circuit includes special VLSI circuits or gate array, such as logic chip, crystal by hardware circuit
Pipe or other components.Module or unit can also be realized in programmable computer hardware, for example field is imitated programmable gate array, can be compiled
Journey array logic, programmable logic device etc..
Module or unit can also be realized in by the software performed by various forms of processors.Such as one can hold
Row code module may include that one or more entities or logic computer instruction block, the block are formed into, such as,
Object, program or function.However, the executable part of identification module or unit need not physically be put together, but can be by
The different instruction for being stored in different location is formed, and when combining in logic, is formed module or unit and is reached the module
Or the purpose required by unit.
In fact, executable code module or unit can be a single instruction or multiple instruction, it might even be possible to which distribution is in place
In several different code sections of different programs, and across several storage devices.Similarly, operation data can be identified and
It is shown in this module or unit, and can implement in any suitable form and in any suitable data structure form
Tissue.Operation data can assemble single data set, or can be distributed in the different positions with different storage devices, and
Only it is present in a system or network in a manner of electronic signal at least partly.
" embodiment " or similar term mentioned by this specification indicate characteristic related with embodiment, structure or feature,
It is included in an at least embodiment of the utility model.Term " in one embodiment " that therefore, this specification occurs, "
In embodiment " and similar to term possibility but it is not necessarily all direction identical embodiment.
Furthermore characteristic described in the utility model, structure or feature can be incorporated in one or more implementations in any way
In example.Explanation will provide many specific details, such as programming, software module, user's selection, network trading, data below
The examples such as library inquiry, database structure, hardware module, hardware circuit, hardware chip, to provide to the utility model embodiment
Understand.However those of ordinary skill in the related art will be seen that the utility model, even if not utilizing wherein one or more special
Determine details, or can also be implemented using other methods, component, material etc..On the other hand, it is the utility model of avoiding confusion, it is known
Structure, material or operation do not have a detailed description.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think to exceed the scope of the utility model.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new
Type.Various modifications to these embodiments will be apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest range consistent with features of novelty.
Claims (8)
1. a kind of device of detection solar photovoltaic assembly power attenuation, which is characterized in that including：Solar photovoltaic assembly sheet
Body, power device and illumination apparatus；Wherein：
The power device is connected with the solar photovoltaic assembly ontology, and the power device is to the solar photovoltaic assembly
Ontology is passed through the electric current of pre-set current value；
The solar photovoltaic assembly ontology receives the light for the default intensity of illumination that the illumination apparatus is sent out in preset time
Source.
2. the device of detection solar photovoltaic assembly power attenuation according to claim 1, which is characterized in that further include：
Detect the short circuit current test device of the solar photovoltaic assembly body short electric current.
3. the device of detection solar photovoltaic assembly power attenuation according to claim 2, which is characterized in that described default
The electric current of current value is 1~1.5 times of the short circuit current.
4. the device of detection solar photovoltaic assembly power attenuation according to claim 2, which is characterized in that described default
Intensity of illumination is 1000kw/m2~3000kw/m2。
5. the device of detection solar photovoltaic assembly power attenuation according to claim 2, which is characterized in that described default
Time is 20~60 hours.
6. the device of detection solar photovoltaic assembly power attenuation according to claim 1 or 2, which is characterized in that described
Illumination apparatus includes：Solar energy analog light source.
7. the device of detection solar photovoltaic assembly power attenuation according to claim 6, which is characterized in that the sun
Energy analog light source is xenon lamp.
8. the device of detection solar photovoltaic assembly power attenuation according to claim 6, which is characterized in that the sun
Energy analog light source is halogen lamp.
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| CN201820051434.8U CN207896937U (en) | 2018-01-12 | 2018-01-12 | A kind of device of detection solar photovoltaic assembly power attenuation |
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| CN201820051434.8U CN207896937U (en) | 2018-01-12 | 2018-01-12 | A kind of device of detection solar photovoltaic assembly power attenuation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017234A1 (en) * | 2019-08-01 | 2021-02-04 | 中国电力科学研究院有限公司 | Method and system for monitoring attenuation of performance of photovoltaic assembly |
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2018
- 2018-01-12 CN CN201820051434.8U patent/CN207896937U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017234A1 (en) * | 2019-08-01 | 2021-02-04 | 中国电力科学研究院有限公司 | Method and system for monitoring attenuation of performance of photovoltaic assembly |
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Effective date of registration: 20201203 Address after: 230000 second floor, scientific research building, sunshine power plant, No.2, Tianhu Road, hi tech Zone, Hefei City, Anhui Province Patentee after: HEFEI SUNGROW RENEWABLE ENERGY SCI. & TECH. Co.,Ltd. Address before: 230088 Anhui city of Hefei province high tech Zone Xiyou Road No. 1699 Patentee before: SUNGROW POWER SUPPLY Co.,Ltd. |
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Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee after: Sunshine New Energy Development Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee before: Sunshine New Energy Development Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee after: Sunshine New Energy Development Co.,Ltd. Address before: 230000 second floor, scientific research building, sunshine power plant, No.2, Tianhu Road, hi tech Zone, Hefei City, Anhui Province Patentee before: HEFEI SUNGROW RENEWABLE ENERGY SCI. & TECH. Co.,Ltd. |
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