CN105609442B - A kind of method of novel crystal silicon solar batteries test stepping - Google Patents

A kind of method of novel crystal silicon solar batteries test stepping Download PDF

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Publication number
CN105609442B
CN105609442B CN201510997544.4A CN201510997544A CN105609442B CN 105609442 B CN105609442 B CN 105609442B CN 201510997544 A CN201510997544 A CN 201510997544A CN 105609442 B CN105609442 B CN 105609442B
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cell piece
stepping
value
battery efficiency
current
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CN105609442A (en
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方再华
杨艳景
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Baoding Guangwei Green Energy Technology Co., Ltd.
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L22/00Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
    • H01L22/10Measuring as part of the manufacturing process
    • H01L22/14Measuring as part of the manufacturing process for electrical parameters, e.g. resistance, deep-levels, CV, diffusions by electrical means

Abstract

A kind of method of novel crystal silicon solar batteries test stepping, preferentially shelves are punished using operating current, then the method for the cell piece of same operating current shelves being subjected to again stepping by battery efficiency again, and flexible stepping section was being set for different situations at that time to cell piece point, different stepping sections is used according to the parameter status difference of different batches of cell pieces, it is poor with minimum working current to greatly reduce maximum operating currenbt, concentrate dispersion, realize the matching of entire assembly unit cell piece operating current, while the encapsulation loss for reducing entire component, the light and shade piece phenomenon of component El test has also obtained corresponding improvement, the one-pass finished rate that the output and component for improving battery to component manufacture.

Description

A kind of method of novel crystal silicon solar batteries test stepping
Technical field
The invention belongs to crystal silicon solar batteries production field, in particular to a kind of novel crystal silicon solar batteries test point The method of shelves.
Background technique
It first has to carry out testing, sorting in the manufacturing process of solar battery sheet at present, the purpose of testing, sorting is to drop The operating current test stepping method that is poor, and generalling use at present of low element cell piece are as follows: preferentially carried out using battery efficiency Then the cell piece of same battery efficiency shelves is finely divided shelves by operating current again by rough segmentation shelves, using same when component package The cell piece (60-72 piece) of one efficiency shelves carries out Series Package;This stepping method will lead to the unit of same battery efficiency shelves The dispersion of the current difference of cell piece work is larger, or even will appear maximum functional stream and be greater than 0.1A with minimum working current difference, Make current differential and there is the case where being greater than 0.2A, the outer cell piece that goes beyond the scope cannot be utilized, and reduce cell piece Utilization rate even meets the cell piece of the operating current difference of 0.1A there is no guarantee that each parameter of cell piece is matched asks The component envelope damage of topic, single efficiency shelves differs greatly, and does not make to will appear between element cell piece when component package operating current not Match, influence battery efficiency, entire component power loses higher problem.
Summary of the invention
It will cause battery current difference for the above-mentioned mentioned testing and sorting method in the prior art of solution and cross big battery envelope The lower problem of matching degree after dress, and propose a kind of a kind of method of novel crystal silicon solar batteries test stepping after optimization
The technical solution of offer are as follows:
1, a kind of method of novel crystal silicon solar batteries test stepping, including operating current stepping and battery efficiency point Shelves, it is characterised in that the following steps are included:
S: preferential to carry out operating current just stepping:
The detailed process of above-mentioned steps S is,
S1: operating current test is carried out to each cell piece in cell piece group to be measured, obtains the work of each cell piece Make current value;
S2: current value section needed for setting mesuring battary piece group;
S3: current value Concourse Division is obtained into multiple electron current values section N according to setting gradient;
S4: according to the working current value of the obtained each cell piece of step S1 and according to each electron current value section to battery Piece carries out stepping, and all working current values are included into same gear with the cell piece for belonging to same electron current value section, obtain Multiple one steps;
D: after working current value stepping, then battery efficiency value stepping is carried out:
The detailed process of above-mentioned steps D is,
D1: the battery efficiency value of the cell piece in each one step is measured, is obtained in each one step The battery efficiency value of cell piece;
D2: the battery efficiency value of each cell piece in the same one step obtained according to step D1 is each one Battery efficiency value section needed for grade gear sets the one step;
D3: according to setting gradient by the battery efficiency value Concourse Division of each one step, the more of the one step are obtained A sub- battery efficiency value section M;
D4: the multiple sub- battery efficiency value section Ms corresponding with the one step obtained according to step D3 are to the level-one Each cell piece in gear carries out stepping, obtains multiple second level gears in the one step;
Complete the stepping tested crystal silicon solar batteries.
Further, take one or more natural numbers very poor as section in the step S3, it will according to very poor size Electric current Concourse Division obtains electron current section N.
Further, take one or more natural numbers very poor as section in the step D3, it will according to very poor size Each battery efficiency Concourse Division, each battery efficiency section is divided into multiple sub- battery efficiency section M after segmentation.
Further, the very poor value range of the step S3 neutron electric current section N is [0,1].
Further, the very poor range of the step D3 neutron efficiency section M is [0,0.45%].The present invention and existing skill Art is compared and is had the advantages that
The present invention is by preferentially using the first stepping of operating current, then passing through electricity for the cell piece of same operating current shelves again Pond efficiency carries out stepping method again, reduces maximum operating currenbt and minimum working current is poor, concentrate dispersion, realize entire component The matching of element cell piece operating current.
Change section classification method, activity interval segmentation method is changed by original fixed interval segmentation method, it is very right Different situations set the different section of very poor value, to realize the matched of cell piece key unit for electrical property parameters, reduce entire group The encapsulation of part is lost.
The light and shade piece phenomenon of El test also obtains while realizing the matched of component pool piece key unit for electrical property parameters Corresponding improvement, and then the one-pass finished rate that the output and component for improving battery to component manufacture.
Cell piece operating current is explicitly divided into several operating current shelves by the present invention, so that photovoltaic plant installation is same The component of operating current shelves is possibly realized, and is promoted output power to power station and is also made that outstanding contributions.
Detailed description of the invention
Fig. 1 is control group distributed model establishment process and electric current of the invention, battery efficiency screening process figure;
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings:
Embodiment 1 provides a kind of method of crystal silicon solar batteries test stepping, the specific steps are as follows:
A: the grade mode of elder generation's electric current stepping, behind efficiency stepping is established, and draws up cell piece stepping area using computer mould Between idealized model, data are tested and acquired to a large amount of cell piece, are successively analyzed corresponding to each electric current section each Cell piece each function superiority and inferiority situation in a efficiency section is screened, when each section of minimum working current value and each gear minimum efficiency rate It is consistent with idealized model or close to it is consistent when, complete control group distributed model establish.
B: testing, sorting will be carried out in each cell piece merging Halm test machine equipment;
S: stepping at the beginning of preferentially carrying out operating current in testing, sorting step:
S1: operating current test is carried out to each cell piece first in step S, obtains the operating current of each cell piece Value;
S2: the working current value of the collected each cell piece of the batch is compared with control group cell piece distributed model It is right, according to the rate difference that files of the two, operating current minimum value in adjustment control group cell piece distributed model appropriate, thus really Optimal current section needed for the cell piece of the fixed batch, the conduct waste paper that all current values are not belonging to optimal current section carry out It rejects.
S3: according to, the operating current region of concentration, gradient is small and gradient value is not higher than the principle of 0.1A, choose one or For multiple natural numbers as gradient value, gradient value is that section is very poor, and electric current section is divided into several segments according to very poor, is obtained multiple The very poor value range of electron current section N, electron current section N are [0,1].
S4: stepping is carried out to cell piece according to each electron current section, all working current values are same to belong to same electron current The cell piece in section is included into same gear, and level-one screening is completed after stepping, obtains multiple one steps accordingly;
D: after operating current stepping, then battery efficiency value stepping is carried out:
D1: parametric measurement is carried out to the cell piece in each one step, obtains the cell piece packet in each one step Include the parameters including battery efficiency value;
D2: by the specific battery efficiency distribution situation of cell piece in each one step and control group cell piece distributed mode Type is compared, and according to the rate difference that files of the two, efficiency is minimum in adjustment control group cell piece distribution distributed model appropriate Value, thus obtains optimal battery efficiency section needed for the one step, and be followed successively by each one step and set the level-one Optimal battery efficiency section needed for gear, the conduct waste paper that all battery efficiency values are not belonging to optimal battery efficiency section are picked It removes;
D3: according to the battery efficiency region more concentrated, gradient value is smaller and gradient value is not higher than 0.45% principle, takes one For a or multiple natural numbers as gradient value, gradient value is that section is very poor, according to the very poor battery by each one step in section Efficiency Concourse Division, the battery efficiency section of each one step is divided into several Ge Zi battery efficiencies area after segmentation Between M, the very poor range of the sub- efficiency section M is 0≤M≤0.45%;
D4: shelves again are carried out by an one step optional in multiple one steps, then for according to the son of the one step Battery efficiency section M carries out stepping to the one step, and all one steps that belongs to belong to same sub- battery efficiency again Cell piece in section is included into same shelves, and successively carries out stepping again to remaining one step, when all one steps Second level screening is completed after stepping, is completed the stepping tested crystal silicon solar batteries, is obtained several secondary battery gears.
E: by each cell piece Series Package.
Embodiment 2, sorting testing procedure is as follows in specific works:
To a collection of 156 polycrystalline cell piece of fillet carry out operating current test, set afterwards by contrast working current value as The optimal current section of [8.225A, 8.345A].
It is very poor as section to find that the optimal current section need to choose two natural numbers by contrast, it is very poor to set two sections Respectively a1=0.05A and a2=0.07A, then by two sections of the optimal current section quartile, respectively the first electron current section [8.225A, 8.295A) and the second electron current section [8.295A, 8.345A];
Working current value is belonged to [8.225A, 8.295A) cell piece be included into the first electron current section, then the first son Electric current section is defined as the first gear, and the cell piece that working current value belongs to [8.295A, 8.345A] is included into the second electron current In section, then the second electron current section definition is the second gear, completes electric current stepping after stepping;
Battery efficiency test is carried out to the cell piece of the first gear, sets the optimal battery effect of first gear afterwards by contrast Rate value section is [17.35%, 18.5%], and need to set four natural numbers very poor as section for discovery afterwards by contrast, sets four A very poor value in section respectively Eta1=0.25%, Eta2=0.415%, Eta3=0.23%, Eta4=0.255%, according to The battery efficiency interal separation of first gear is obtained the first sub- efficiency section [17.35%, 17.6%] by Eta1=0.25%;Root According to Eta2=0.415% by the battery efficiency interal separation of the first gear obtain two sub- efficiency sections [17.6%, 18.015%); According to Eta3=0.23% by the battery efficiency interal separation of the first gear be obtain three sub- efficiency sections [18.015%, 18.245%);According to Eta4=0.255% by the battery efficiency interal separation of the first gear be the 4th sub- efficiency section [18.245%, 18.5%];
By current value belong to the first gear and battery efficiency value belong to the first sub- efficiency section cell piece be included into it is same In shelves, which is defined as the first gear first order, [8.225A, 8.295A) and [17.35%, 17.6%];
By current value belong to the first gear and battery efficiency value belong to the second sub- efficiency section cell piece be included into it is same In shelves, which is defined as the first gear second level, [8.225A, 8.295A) and [17.6%, 18.015%);
Current value is belonged into the first gear and battery efficiency value belongs to the cell piece in the sub- efficiency section of third and returns as same In shelves, which is defined as the first gear third level, [8.225A, 8.295A) and [18.015%, 18.245%);
By current value belong to the first gear and battery efficiency value belong to the 4th sub- efficiency section cell piece be included into it is same In shelves, which is defined as the first gear fourth stage, [8.225A, 8.295A) and [18.245%, 18.5%];
Battery efficiency test is carried out to the cell piece of the second gear, by contrast after, the second gear cell piece of setting it is optimal Efficiency section is [17.5%, 18.545%], by contrast discovery very poor, three very poor difference in section that need to set three sections afterwards For Eta1=0.415%, Eta2=0.33%, Eta3=0.3%, the battery of the second gear is imitated according to Eta1=0.415% Rate interal separation obtains the 4th sub- efficiency section [17.5%, 17.915%];According to Eta2=0.33% by the electricity of the second gear Pond efficiency interal separation obtain the 5th sub- efficiency section [17.915%, 18.245%);According to Eta3=0.3% by the second gear Battery efficiency interal separation obtain the 6th sub- efficiency section [18.245%, 18.545%);
Current value is belonged into the second gear and battery efficiency value belongs to the cell piece in the 4th sub- efficiency section and is included into together In one grade, which is defined as the second gear fourth stage, [8.295A, 8.345A]) and [17.5%, 17.915%];
By current value belong to the second gear and battery efficiency value belong to the 5th sub- efficiency section cell piece be included into it is same In shelves, which is defined as the second gear level V, [8.295A, 8.345A]) and [17.915%, 18.245%);
Current value is belonged into the second gear and battery efficiency value belongs to the cell piece in the 6th sub- efficiency section and returns as same In shelves, which is defined as the 6th grade of the second gear, [8.295A, 8.345A]) and [18.245%, 18.545%);
To sum up, according to the method described above, by this batch of 156 single crystal battery built-in testing of fillet and it has been divided into seven grades, has been respectively as follows:
The first gear first order, working current value be located at [8.225A, 8.295A) and battery efficiency value be located at [17.35%, 17.6%];
The first gear second level, working current value be located at [8.225A, 8.295A) and battery efficiency value be located at [17.6%, 18.015%);
The first gear third level, working current value be located at [8.225A, 8.295A) and battery efficiency value be located at [18.015%, 18.245%);
The first gear fourth stage, working current value be located at [8.225A, 8.295A) and battery efficiency value be located at [18.245%, 18.5%];
Second gear level V, working current value are located at [8.295A, 8.345A]) and battery efficiency value be located at [17.5%, 17.915%];
The 6th grade of second gear, working current value is located at [8.295A, 8.345A]) and battery efficiency value be located at [17.915%, 18.245%);
The 7th grade of second gear, working current value is located at [8.295A, 8.345A]) and battery efficiency value be located at [18.245%, 18.545%).

Claims (5)

1. a kind of method of novel crystal silicon solar batteries test stepping, including operating current stepping and battery efficiency stepping, Be characterized in that the following steps are included:
A: the grade mode of elder generation's electric current stepping, behind efficiency stepping is established, and draws up cell piece stepping section using computer mould Idealized model, is tested to a large amount of cell piece and is acquired data, successively analyzes each effect corresponding to each electric current section Cell piece each function superiority and inferiority situation in rate section is screened, when each section of minimum working current value and each gear minimum efficiency rate and reason Wanting model it is consistent or close to it is consistent when, complete the foundation of control group distributed model;
B: testing, sorting will be carried out in each cell piece merging Halm test machine equipment;
S: stepping at the beginning of preferentially carrying out operating current in testing, sorting step:
The detailed process of above-mentioned steps S is,
S1: carrying out operating current test to each cell piece in cell piece group to be measured, obtains the work electricity of each cell piece Flow valuve;
S2: the working current value of the collected each cell piece of batch in step S1 and control group cell piece distributed model are carried out It compares, according to the rate difference that files of the two, operating current minimum value in adjustment control group cell piece distributed model appropriate, thus Optimal current section needed for determining the cell piece of the batch, the conduct waste paper that all current values are not belonging to optimal current section carry out It rejects;
S3: current value Concourse Division is obtained into multiple electron current values section N according to setting gradient;
S4: according to the working current value of the obtained each cell piece of step S1 and according to each electron current value section to cell piece into Row stepping, all working current values are included into same gear with the cell piece for belonging to same electron current value section, obtain multiple One step;
D: after working current value stepping, then battery efficiency value stepping is carried out:
The detailed process of above-mentioned steps D is,
D1: the battery efficiency value of the cell piece in each one step is measured, the battery in each one step is obtained The battery efficiency value of piece;
D2: by the specific battery efficiency distribution situation of cell piece in each one step and control group cell piece distributed model into Row compares, according to the rate difference that files of the two, efficiency minimum value in adjustment control group cell piece distribution distributed model appropriate, by This obtains optimal battery efficiency section needed for the one step, and is followed successively by each one step and sets the one step institute The optimal battery efficiency section needed, the conduct waste paper that all battery efficiency values are not belonging to optimal battery efficiency section are rejected;
D3: according to setting gradient by the battery efficiency value Concourse Division of each one step, multiple sons of the one step are obtained Battery efficiency value section M;
D4: the multiple sub- battery efficiency value section Ms corresponding with the one step obtained according to step D3 are to the one step Interior each cell piece carries out stepping, obtains multiple second level gears in the one step;
Complete the stepping tested crystal silicon solar batteries.
2. a kind of method of novel crystal silicon solar batteries test stepping according to claim 1, it is characterised in that: described Step S3 in take one or more natural numbers very poor as section, according to very poor size by electric current Concourse Division, obtain sub- electricity Flow section N.
3. a kind of method of novel crystal silicon solar batteries test stepping according to claim 1, it is characterised in that: described Step D3 in take one or more natural numbers very poor as section, according to very poor size by each battery efficiency Concourse Division, Each battery efficiency section is divided into multiple sub- battery efficiency section M after segmentation.
4. a kind of method of novel crystal silicon solar batteries test stepping according to claim 1, it is characterised in that: described The very poor value range of step S3 neutron electric current section N is [0,1].
5. a kind of method of novel crystal silicon solar batteries test stepping according to claim 1, it is characterised in that: described The very poor range of step D3 neutron efficiency section M is [0,0.45%].
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CN106129180A (en) * 2016-08-01 2016-11-16 芜湖格利特新能源科技有限公司 A kind of manufacturing process of crystal silicon solar energy battery
CN106206860A (en) * 2016-09-14 2016-12-07 无锡尚德太阳能电力有限公司 Solve the battery stepping method of crystal silicon solar assembly EL light and shade problem
CN107301968B (en) * 2017-07-31 2019-10-25 苏州阿特斯阳光电力科技有限公司 A kind of method for separating of solar battery sheet, connection method, component and test device
CN110170468A (en) * 2019-05-23 2019-08-27 通威太阳能(成都)有限公司 A kind of method for separating reducing the bad ratio of solar cell module light and shade piece
CN111010086A (en) * 2019-12-06 2020-04-14 英利能源(中国)有限公司 Battery sorting method and system and terminal equipment

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CN104269574A (en) * 2014-09-23 2015-01-07 中航锂电(洛阳)有限公司 Battery pack sorting method

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