CN107301968B - A kind of method for separating of solar battery sheet, connection method, component and test device - Google Patents

A kind of method for separating of solar battery sheet, connection method, component and test device Download PDF

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Publication number
CN107301968B
CN107301968B CN201710638674.8A CN201710638674A CN107301968B CN 107301968 B CN107301968 B CN 107301968B CN 201710638674 A CN201710638674 A CN 201710638674A CN 107301968 B CN107301968 B CN 107301968B
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Prior art keywords
shelves
degradation
cell piece
preset value
component
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CN107301968A (en
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程雪原
王海翔
郑旭然
邢国强
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CSI Solar Technologies Inc
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CSI Solar Technologies Inc
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005Apparatus not specifically provided for elsewhere
    • H01L21/67242Apparatus for monitoring, sorting or marking
    • H01L21/67271Sorting devices
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1876Particular processes or apparatus for batch treatment of the devices
    • H01L31/188Apparatus specially adapted for automatic interconnection of solar cells in a module
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The present invention provides a kind of method for separating of solar battery sheet, connection method, component and test devices, are related to area of solar cell.The method for separating includes: that cell piece is divided into efficiency shelves and degradation shelves according to the first preset value;Degradation shelves are divided into the first degradation shelves and the second degradation shelves according to the second preset value;Wherein, the first preset value and the second preset value are the resistance value of cell piece, and the difference of the second preset value and the first preset value is 0.1~0.5 milliohm.The connection method be include: that the cell piece of efficiency shelves and the first degradation shelves is made into component using concatenated mode;After the cell piece of second degradation shelves is sliced, component is made by the way of series and parallel combination.The cell piece that this method for separating differs greatly series impedance in the prior art, i.e. degradation piece, are classified, and are helped to be more reasonably utilized degradation piece, are improved the utilization rate of degradation piece.

Description

A kind of method for separating of solar battery sheet, connection method, component and test device
Technical field
The present invention relates to area of solar cell, method for separating, connection in particular to a kind of solar battery sheet Method, component and test device.
Background technique
The problems such as fossil energy faces reserves deficiency a few days ago, and use cost increases develops new energy and has become the whole world Topics common.Wherein, solar energy with its clean and environmental protection, obtain directly, the advantages such as rich reserves, have become it is most potential can Alternative energy source.
In all kinds of solar energy conversion devices, the factors such as comprehensive production cost, transfer efficiency, device lifetime, crystalline silicon is too Positive energy battery occupies always dominant position in commercialization solar energy conversion device.
Solar cell module at this stage is encapsulated by cell piece, armorplate glass, EVA resin.Cell piece front is set Good main gate line and secondary grid line are had conductivity, the back side is equipped with aluminum back electric field and silver-colored back electrode, and cell piece is welded just by welding The back electrode of face main gate line and adjacent cell piece;Under cell piece working condition, electric current is collected by the welding at front, the back side, several A cell piece is connected into component.In order to reduce component current loss, usually the cell piece of same efficiency gear is connected, to reduce Short circuit current (Isc) difference bring power loss between cell piece, therefore efficiency stepping is the weight during cell slice test Want part.
Currently, battery slice assembly line stepping, is mainly divided into efficiency shelves, degradation shelves (Rs grades) and rubbish for cell piece produced Rubbish shelves.Wherein, the resistance value of cell piece is greater than efficiency shelves in degradation shelves, when the cell piece series component of itself and each efficiency shelves When, short circuit current differs greatly between cell piece, thus caused by power loss it is more serious.Therefore, conventional way be by Cell piece in degradation shelves does downgrade processing, i.e., processing is inexpensively sold in the connection of it goes without doing cell piece component cheap.It can be seen that existing There is this kind of degradation piece in technology not utilized rationally, results in waste of resources higher with the production cost of cell piece.
Summary of the invention
The first object of the present invention is to provide a kind of method for separating of solar battery sheet, in this way will be existing The different biggish cell piece of series resistance (Rs) value difference, i.e. degradation piece, are classified in technology, help to be more reasonably utilized drop Grade piece, improves the utilization rate of degradation piece.
The second object of the present invention is to provide a kind of connection method of solar battery sheet, and this method uses above-mentioned first Method for separating is classified cell piece, and the cell piece of same shelves is recycled to be attached, to reduce obtained battery component Overall resistance value, reduce current mismatch.
The third object of the present invention is to provide a kind of solar battery sheet component, the overall resistance of this cell piece component Low, the power loss reduction of cell piece, assembly end, the encapsulation power of component is effectively promoted.
The fourth object of the present invention is to provide a kind of test device of solar battery sheet, by this test device, The sorting classifying to solar battery sheet can be achieved.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of method for separating of solar battery sheet comprising:
According to the first preset value, cell piece is divided into efficiency shelves and degradation shelves;
Degradation shelves are divided into the first degradation shelves and the second degradation shelves according to the second preset value;
Wherein, the first preset value and the second preset value are the resistance value of cell piece, and the second preset value and first is preset The difference of value is 0.1~0.5 milliohm.
A kind of connection method of solar battery sheet comprising:
Solar battery sheet is classified according to above-mentioned method for separating;The cell piece of efficiency shelves and the first degradation shelves is adopted Component is made into concatenated mode;After the cell piece of second degradation shelves is sliced, done in groups by the way of series and parallel combination Part.
A kind of solar battery sheet component, the solar battery sheet component are according to made of above-mentioned connection method.
A kind of test device of solar battery sheet comprising:
First diversity module, for according to the first preset value, cell piece to be divided into efficiency shelves and degradation shelves;
Second diversity module, for degradation shelves to be divided into the first degradation shelves and the second degradation shelves according to the second preset value;
Wherein, the first preset value and the second preset value are the resistance value of cell piece, and the second preset value and first is preset The difference of value is 0.1~0.5 milliohm.
Compared with prior art, beneficial effects of the present invention for example,
The method for separating of this solar battery sheet provided by the invention, by the degradation piece of downgrade processing in the prior art into Row subdivision helps to be more reasonably utilized degradation piece, improves drop by the lesser cell piece of resistance value difference point in a gear The utilization rate of grade piece.That is, component is attached with the cell piece after classification, due to the resistance value difference of the cell piece of same gear Smaller, the overall resistance of the cell piece component formed by the cell piece of same gear is low, cell piece, assembly end power loss subtract Few, the encapsulation power of component is effectively promoted, and can effectively improve assembly quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described.
The component connection schematic diagram of cell piece in the first degradation shelves that Fig. 1 provides for the embodiment of the present invention 5;
The component connection schematic diagram of cell piece in the third degradation shelves that Fig. 2 provides for the embodiment of the present invention 5.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is The conventional products that can be obtained by commercially available purchase.
Present embodiment provides a kind of method for separating of solar battery sheet comprising:
Step S1: according to the first preset value, cell piece is divided into efficiency shelves and degradation shelves.
First preset value is the resistance value of cell piece.Optionally, the first preset value is 1~2.5 milliohm, or for 1.2~ 2.2 milliohms or for 1.3~2.0 milliohms or it is 1.3 milliohms or is 1.6 milliohms, is perhaps 2 milliohms or is 2.5 Milliohm.
Cell piece is classified according to the resistance value size of cell piece, it may be assumed that when the resistance value of cell piece is pre- less than first If value, then be classified as efficiency shelves;When cell piece resistance value be more than or equal to the first preset value, then be classified as degradation shelves.
Step S2: degradation shelves are divided by the first degradation shelves and the second degradation shelves according to the second preset value.
Second preset value is the resistance value of cell piece.The difference of second preset value and the first preset value is 0.1~0.5 milli Europe, i.e. the second preset value 0.1~0.5 milliohm bigger than the first preset value, or 0.2~0.3 milliohm bigger than the first preset value.Example Such as, when the first preset value be 2 milliohm when, the second preset value be 2.1~2.5 milliohms, optionally, second be preset as 2.2 milliohms or Person is 2.3 milliohms or is 2.4 milliohms.
The step is the process being classified again according to the resistance value size of cell piece to the cell piece in degradation shelves, That is: when the resistance value of cell piece less than the second preset value (resistance value of cell piece be located at the first preset value and the second preset value it Between), then the first degradation shelves are classified as, the cell piece of the gear can be used concatenated mode and carry out cell piece component;When cell piece Resistance value be more than or equal to the second preset value, then be classified as the second degradation shelves, can be used for making power not higher than 325W component or Downgrade processing.
It should be noted that step S1 and step S2 can be carried out step by step in the stage division, can also simultaneously into Row.First preset value and the second preset value are set simultaneously, cell piece to be fractionated is classified by being classified storehouse, simultaneously To efficiency shelves, the cell piece of the first degradation shelves and the second degradation shelves.
Further, which further includes that the second degradation shelves are divided into third degradation shelves and according to third preset value Four degradation shelves.
Wherein, third preset value is the resistance value of cell piece, and the ratio of third preset value and the first preset value for 1.9~ 2.1:1.When the first preset value selects within the scope of 1~2.5 milliohm, third preset value is the 1.9~2.1 of the first preset value Times.For example, the second preset value is 2.1~2.5 milliohms when the first preset value is 2 milliohm, third preset value is 3.8~4.2 millis Europe.
The step is the mistake being classified again according to the resistance value size of cell piece to the cell piece in the second degradation shelves Journey, it may be assumed that when the resistance value of cell piece is less than third preset value (that is, being preset when the resistance value of cell piece is located at second When between value and third preset value), then third degradation shelves are classified as, after the cell piece of the gear can be sliced, using first connecting Mode in parallel is made into component again;When cell piece resistance value be more than or equal to third preset value, then be classified as the 4th degradation shelves, can use The component or downgrade processing of 265W are not higher than in production power.
Further, method for separating further includes that the 4th degradation shelves are divided into the 5th degradation shelves and rubbish according to the 4th preset value Shelves.
Wherein, the 4th preset value is the resistance value of cell piece, and the 4th preset value is more than or equal to 3.5 milliohms, i.e., when the 4th (that is, when to be located at third pre- for the resistance value of cell piece when the resistance value of cell piece in degradation shelves is less than four preset values If when between value and the 4th preset value), then the 5th degradation shelves are classified as, after the cell piece of the gear can be sliced, using first going here and there Join mode in parallel again and is made into the component that power is not higher than 265W;When cell piece resistance value be more than or equal to the 4th preset value, then Rubbish shelves are classified as,
This method for separating, can be by the degradation piece being mixed in cell piece in test process on the basis of not increasing manpower In pick out, reduce assembly quality risk.Meanwhile four preset values can be changed according to the variation of production technology, flexibly Property it is high, universality is strong.
It should be noted that above-mentioned classification step can carry out step by step in the stage division, can also simultaneously into Row.First preset value, the second preset value, third preset value and the 4th preset value are set simultaneously, by cell piece to be fractionated It is classified by being classified storehouse, while obtaining efficiency shelves, the first degradation shelves, third degradation shelves, the 5th degradation shelves and rubbish shelves Cell piece.
The degradation piece of downgrade processing in the prior art is finely divided by the method for separating of this solar battery sheet, will be electric The lesser cell piece of resistance value difference point helps to be more reasonably utilized degradation piece, improves the utilization of degradation piece in a gear Rate.
Present embodiment also provides a kind of connection method of solar battery sheet comprising:
Solar battery sheet is classified by above-mentioned method for separating, i.e., it will be electric according to the first preset value and the second preset value Pond piece is divided into efficiency shelves, the first degradation shelves and the second degradation shelves;
The cell piece of efficiency shelves and the first degradation shelves is made into component using concatenated mode;By the battery of the second degradation shelves After piece slice, component is made by the way of series and parallel combination.
The cell piece being located in efficiency shelves is made into component using conventional series process;Battery in the first degradation shelves Piece is also made into component using conventional series process.Due to the cell piece being located in same gear (efficiency shelves or the first degradation shelves) Resistance value difference it is smaller, component is made into using series process, the short circuit current difference between cell piece is smaller, thus caused by function Rate is lost in normal tolerance interval, and thus, it is possible to efficiently use the first degradation piece.
Further, further includes: the second degradation shelves are divided by third degradation shelves and the 4th degradation shelves according to third preset value, After the cell piece of third degradation shelves is sliced, it is made into component by the way of series and parallel combination, to reduce the resistance of cell piece Value difference is different, reduces power loss.
Further, further includes: the 4th degradation shelves are divided by the 5th degradation shelves and rubbish shelves according to the 4th preset value;By After the cell piece slice of five degradation shelves, component is made by the way of series and parallel combination.
The resistance value of cell piece differs greatly in third degradation shelves and the 5th degradation shelves, if directlying adopt series process to connect Connected components, when it is with the cell piece series component of each efficiency shelves and the first degradation shelves, short circuit current is poor between cell piece Different larger, thus caused power loss is more serious.The cell piece for being located at the two gears is sorted out as a result, favorably In the raising for reducing the power of battery and battery quality in each efficiency shelves and the first degradation shelves.
After the cell piece of the third degradation shelves or the 5th degradation shelves that are located at same gear is sliced, using series and parallel In conjunction with mode be made into component, advantageously reduce the power loss of cell piece and assembly end, lifting assembly encapsulates power (CTM) Value, to further increase the utilization rate of the two gear degradation pieces.By taking the conventional batteries piece of 156 × 156mm as an example, according to vertical It is cut in the mode of main gate line 1/2, obtains the equivalent 156 × 78mm cell piece of two panels, half battery is combined using series and parallel Mode be welded into component, in practice it has proved that, assembly end performance number can be correspondingly improved.
The connection method of this solar battery sheet is first classified cell piece using above-mentioned method for separating, then will Cell piece positioned at same gear is attached, and to reduce the overall resistance value of obtained battery component, reduces current mismatch.
Present embodiment also provides a kind of solar battery sheet component, and this solar battery sheet component is according to above-mentioned company It connects made of method.The overall resistance of this cell piece component is low, the power loss reduction of cell piece, assembly end, the envelope of component Dress power is effectively promoted.
Present embodiment further includes a kind of test device of solar battery sheet, by this test device, it can be achieved that right The sorting classifying of solar battery sheet.
The test device includes:
First diversity module, for according to the first preset value, cell piece to be divided into efficiency shelves and degradation shelves;
Second diversity module, for degradation shelves to be divided into the first degradation shelves and the second degradation shelves according to the second preset value;
Wherein, the first preset value and the second preset value are the resistance value of cell piece, and the second preset value and first is preset The difference of value is 0.1~0.5 milliohm.
Further, the test device further include:
Third diversity module degrades for the second degradation shelves to be divided into third degradation shelves and the 4th according to third preset value Shelves;
4th diversity module, for the 4th degradation shelves to be divided into the 5th degradation shelves and rubbish shelves according to the 4th preset value;
Wherein, third preset value and the 4th preset value are the resistance value of cell piece, and third preset value and first is preset The ratio of value is 1.9~2.1:1, and the 4th preset value is more than or equal to 3.5 milliohms.
Feature and performance of the invention are described in further detail with reference to embodiments:
Embodiment 1
The present embodiment provides a kind of method for separating of solar battery comprising:
During testing cell piece, preset value is arranged: the first preset value is 1 milliohm, and the second preset value is 1.5 milliohms, 4th preset value is 3.5 milliohms.
Resistance value is classified as efficiency shelves less than the cell piece of 1 milliohm;
By cell piece of the resistance value between 1 milliohm and 1.5 milliohms, it is classified as the first degradation shelves;
By cell piece of the resistance value between 1.5 milliohms and 3.5 milliohms, it is classified as the second degradation shelves;
Resistance value is greater than to the cell piece of 3.5 milliohms, is classified as rubbish shelves.
Embodiment 2
The present embodiment provides a kind of method for separating of solar battery comprising:
During testing cell piece, preset value is arranged: the first preset value is 1.3 milliohms, and the second preset value is 1.4 millis Europe, the 4th preset value are 3.5 milliohms.
Resistance value is classified as efficiency shelves less than the cell piece of 1.3 milliohms;
By cell piece of the resistance value between 1.3 milliohms and 1.4 milliohms, it is classified as the first degradation shelves;
By cell piece of the resistance value between 1.4 milliohms and 3.5 milliohms, it is classified as the second degradation shelves;
Resistance value is greater than to the cell piece of 3.5 milliohms, is classified as rubbish shelves.
Embodiment 3
The present embodiment provides a kind of method for separating of solar battery comprising:
During testing cell piece, preset value is arranged: the first preset value is 1.6 milliohms, and the second preset value is 1.9 millis Europe, the 4th preset value are 4 milliohms.
Resistance value is classified as efficiency shelves less than the cell piece of 1.6 milliohms;
By cell piece of the resistance value between 1.6 milliohms and 1.9 milliohms, it is classified as the first degradation shelves;
By cell piece of the resistance value between 1.9 milliohms and 4 milliohms, it is classified as the second degradation shelves;
Resistance value is greater than to the cell piece of 4 milliohms, is classified as rubbish shelves.
Embodiment 4
The present embodiment provides a kind of method for separating of solar battery comprising:
During testing cell piece, preset value is arranged: the first preset value is 2 milliohms, and the second preset value is 2.3 milliohms, Third preset value is 3.8 milliohms, and the 4th preset value is 6 milliohms.
Resistance value is classified as efficiency shelves less than the cell piece of 2 milliohms;
By cell piece of the resistance value between 2 milliohms and 2.3 milliohms, it is classified as the first degradation shelves;
By cell piece of the resistance value between 2.3 milliohms and 3.8 milliohms, it is classified as third degradation shelves;
By cell piece of the resistance value between 3.8 milliohms and 6 milliohms, it is classified as the 5th degradation shelves;
Resistance value is greater than to the cell piece of 6 milliohms, is classified as rubbish shelves.
Embodiment 5
The present embodiment provides a kind of method for separating of solar battery comprising:
During testing cell piece, preset value is arranged: the first preset value is 2.5 milliohms, and the second preset value is 2.8 millis Europe, third preset value are 5.25 milliohms, and the 4th preset value is 7.5 milliohms.
Resistance value is classified as efficiency shelves less than the cell piece of 2.5 milliohms;
By cell piece of the resistance value between 2.5 milliohms and 2.8 milliohms, it is classified as the first degradation shelves;
By cell piece of the resistance value between 2.8 milliohms and 5.25 milliohms, it is classified as third degradation shelves;
By cell piece of the resistance value between 5.25 milliohms and 7.5 milliohms, it is classified as the 5th degradation shelves;
Resistance value is greater than to the cell piece of 7.5 milliohms, is classified as rubbish shelves.
The present embodiment also provides a kind of solar battery sheet component, and preparation method includes:
The cell piece being attributed in the first degradation shelves is connected by the way of welding manner of connecting, as shown in Figure 1.
It uses cutting to be sent to assembly end for 1/2 mode the cell piece being attributed in third degradation shelves, while using and going here and there, simultaneously It is coupled the mode closed and connects cell piece, as shown in Figure 2.
It uses cutting to be sent to assembly end for 1/2 mode the cell piece being attributed in the 5th degradation shelves, while using and going here and there, simultaneously It is coupled the mode closed and connects cell piece.
Comparative example 1
This comparative example provides a kind of method for separating of solar battery, and specific steps and embodiment 5 are consistent.
This comparative example also provides a kind of solar battery sheet component, and preparation method includes:
By the cell piece being attributed in third degradation shelves using not being sliced, all concatenated welding manner connection, obtains battery Piece component.
Experimental example
Different companies is used to the cell piece in the third degradation shelves provided in the embodiment of the present invention 5 and comparative example 1 below The performance for connecing the obtained cell piece component of mode is evaluated, and the performance test results are as shown in table 1.
The performance test results for the cell piece component that table 1. is connected using different connection types
Seen from table 1, half component power is promoted after the cell piece of third degradation gear is done slicing treatment by comparison discovery 7W, this is mainly due to cut half-cell piece and reduces the loss of assembly end current mismatch, and short circuit current improves 73mA, filling because Son improves 1.70%, while the series impedance of component reduces 0.0917 milliohm, thus embodies by provided by the invention Method for separating be classified to solar battery sheet significant.
To sum up, the method for separating for this solar battery sheet that present embodiment provides, will downgrade processing in the prior art Degradation piece be finely divided, by the lesser cell piece of resistance value difference point in a gear, help to be more reasonably utilized drop Grade piece, improves the utilization rate of degradation piece.That is, component is attached with the cell piece after classification, due to the cell piece of same gear Resistance value difference it is smaller, the overall resistance of the cell piece component formed by the cell piece of same gear is low, cell piece, assembly end Power loss reduce, the encapsulation power of component is effectively promoted, and can effectively improve assembly quality.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims Including belonging to all such changes and modifications in the scope of the invention.

Claims (4)

1. a kind of connection method of solar battery sheet, characterized in that it comprises:
According to the first preset value, cell piece is divided into efficiency shelves and degradation shelves, divides the degradation shelves further according to the second preset value For the first degradation shelves and the second degradation shelves, wherein first preset value and second preset value are the cell piece Resistance value, first preset value is 1~2.5 milliohm, and the difference of second preset value and first preset value is 0.1 ~0.5 milliohm;
The cell piece of the efficiency shelves and the first degradation shelves is made into component using concatenated mode;
After the cell piece of second degradation shelves is sliced, component is made by the way of series and parallel combination.
2. the connection method of solar battery sheet according to claim 1, which is characterized in that described " by the second degradation shelves Cell piece slice, be made into component by the way of series and parallel combination " step includes: according to third preset value by described second Degradation shelves are divided into third degradation shelves and the 4th degradation shelves, wherein resistance value of the third preset value for the cell piece, and institute The ratio for stating third preset value and first preset value is 1.9~2.1:1;The cell piece of the third degradation shelves is sliced Afterwards, component is made by the way of series and parallel combination.
3. the connection method of solar battery sheet according to claim 2, which is characterized in that further include: it is pre- according to the 4th If the 4th degradation shelves are divided into the 5th degradation shelves and rubbish shelves by value, the 4th preset value is the resistance of the cell piece Value, and the 4th preset value is more than or equal to 3.5 milliohms;After the cell piece of the 5th degradation shelves is sliced, using series and parallel In conjunction with mode be made into component.
4. a kind of solar battery sheet component, which is characterized in that the solar battery sheet component is according to claim 1~3 Any one of described in connection method made of.
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CN105609442A (en) * 2015-12-28 2016-05-25 光为绿色新能源股份有限公司 Novel test and grading method for crystal silicon solar cell

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