CN103336234A - Test platform suitable for back contact crystalline silicon solar cell - Google Patents
Test platform suitable for back contact crystalline silicon solar cell Download PDFInfo
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- CN103336234A CN103336234A CN2013102272241A CN201310227224A CN103336234A CN 103336234 A CN103336234 A CN 103336234A CN 2013102272241 A CN2013102272241 A CN 2013102272241A CN 201310227224 A CN201310227224 A CN 201310227224A CN 103336234 A CN103336234 A CN 103336234A
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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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- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a test platform suitable for a back contact crystalline silicon solar cell, which comprises a main support platform, a test system, an adsorption system, and a temperature control system, wherein the main support platform is used as an objective table for the crystalline silicon solar cell; the test system, the adsorption system, and the temperature control system integrate in the main support platform simultaneously. The test platform is suitable for the test of back contact crystalline silicon solar cells of an MWT solar cell, an EWT solar cell, an IBC solar cell, and the like, and has the characteristics of simple structure, complete functions, low test cost, and simple operation.
Description
Technical field
The invention belongs to area of solar cell, be specifically related to a kind of test platform that is applicable to back of the body contact crystalline silicon solar cell.
Background technology
Along with the exhaustion day by day of fossil energy, the importance of the energy receives increasing concern, and photovoltaic solar is subjected to extensive favor as the harmless and inexhaustible variety of energy sources of cleaning.Solar cell is a kind of a kind of photoproduction volt device that solar radiant energy directly is converted to electric energy and the gained electric energy is transferred to load.Solar battery structure physically with a large tracts of land diode-like seemingly, Fig. 1 is the synoptic diagram of typical P type substrate crystal silicon solar cell.When sun light beam shines solar battery surface, energy produces electron hole pair (Electron-Hole Pair) more than or equal to the photon of crystalline silicon energy gap (～1.12 eV) at the inside battery diverse location, the excess carriers that produce are compound while moving at inside battery, in the time of near moving to space charge region, because the effect of battery built in field, electron hole pair separates and gathers in the battery front and rear surfaces that (electronics is assembled in the front of battery, assemble at the back side of battery in the hole), also can externally do work when connecting load is the load power supply.
In the tradition solar battery structure, positive and negative electrode lays respectively at the solar cell front and rear surfaces, adopts the form of metal probe to contact the front and back electrode respectively for the test of this kind solar cell, gathers detection data, and arrangement simulates the IV curve.What another was different from traditional solar battery structure then is the back of the body contact crystalline silicon solar cell that the solar cell positive and negative electrode all is positioned at cell backside, typical case's representative has MWT(Metal-wrap-through) solar cell, EWT(Emitter-wrap-through) solar cell and IBC(Interdigitated back contact) solar cell etc.Back of the body contact crystalline silicon solar cell mainly contains following several big advantage compared to the traditional structure solar cell: one, back of the body contact crystalline silicon solar cell has compared to the high characteristics of traditional structure efficiency of solar cell, and performance the most intuitively is the minimizing of front surface shading area and the reduction of surface recombination; Its two, back of the body contact solar cell is easy to be integrated in the component system compared to traditional solar cell more, and owing to reduce extra operation such as interconnecting strip welding, it is good to have integrated level, characteristics such as assembly output power height; Its three, the outward appearance of back of the body contact solar cell has very big dirigibility and independence, can prepare the exterior design of different surfaces pattern at different demands, has compared to traditional solar cell advantage more attractive in appearance.
In above-mentioned several typical case's back of the body contact solar cell, the MWT solar cell mainly is that the mode that adopts laser to open the hole at matrix surface guides to back of solar cell with front electrode main grid line, and thin grid line then still is positioned at the battery front surface; The EWT solar cell then is to adopt laser to diffuse to form the p-n junction structure at the intensive Kong Zaijing of opening of matrix surface, and the photocurrent that the current transmission characteristic of employing knot is collected front surface transfers to cell backside, and the battery front surface is exposed fully, electrodeless covering; The IBC solar cell then is to adopt at the matrix back side to form intersection Vertical Launch electrode structure by the mode of selecting diffusion, and then the zone forms the positive and negative electrode zone overleaf, and it is same to form back of the body contact structures and EWT, and the battery front surface there is no the grid line overlay area.
An important problem then is the efficient of how to test this kind battery in the preparation of carrying on the back the contact solar cell and testing process.Adopt the method for testing of traditional solar cell obviously not all right, test the earliest then is by the mode that adopts the tin bar welding back side positive and negative electrode to be drawn the back side to adopt the traditional measurement mode to measure again, form hole and sealing-off phenomenon in additional process and the welding process easily owing to exist, its test result is also not fully up to expectations.Propose several Testing Platform schemes that contact solar cell specially at the back side among US Patent No. 20120105088 A1, adopt the mode of vacuum suction and piston probe to fix back of the body contact solar cell and finish the work of probe contact measurement.Above-mentioned several table design scheme can well solve the fixing and absorption problem for back of the body contact solar cell, yet because in the test process of solar cell, battery is owing to be subjected to the influence of light radiation, can produce the heating phenomenon, and the unstable rule of temperature can have influence on final solar cell measurement result greatly.And the not mentioned method of temperature of how controlling also in above-mentioned several scheme.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, multiple functional, measure the cost test platform that is applicable to back of the body contact crystalline silicon solar cell low and simple to operate, this test platform is applicable to the MWT solar cell, the test of the back of the body such as EWT solar cell and IBC solar cell contact solar cell.
Purpose of the present invention is achieved by taking following technical scheme:
A kind of test platform that is applicable to back of the body contact crystalline silicon solar cell, it is characterized in that: comprise main support platform, test macro, adsorption system and temperature control system, described main support platform is as the objective table of back of the body contact crystalline silicon solar cell, described test macro, adsorption system and temperature control system are integrated in the described main support platform simultaneously, wherein temperature control system is located at main support platform inside, constitute temperature control by some through holes and connect the loop, pass to uniform temperature and flow velocity liquid in the through hole, guarantee that the main support platform is in set temperature value; Test macro is located at inside and the surface of main support platform, constitutes test access by some through holes, and through hole passes inside and the surface of main support platform, and through hole inside passes to the test metal probe; Adsorption system is made of vacuum cup and vacuum suction path, vacuum cup is located at the surface of main support platform, the vacuum suction path forms in the inside of main support platform and connects the loop, vacuum cup and vacuum suction path are communicated with, and the vacuum suction path passes to air-flow so that vacuum cup is finished the absorption to back of the body contact crystalline silicon solar cell.
As one embodiment of the present invention, the vacuum suction path of described adsorption system separately exists in the inside of main support platform, finishes adsorption function by the individual air stream path, and the length of Dui Ying test metal probe is greater than the height of main support platform thus; Described test metal probe is provided with the probe springs bearing base of avoiding grating back of the body contact crystalline silicon solar cell surface, and the diameter of described probe springs bearing base is greater than the test access of test macro.
As another embodiment of the invention, the vacuum suction path of described adsorption system and the test access of test macro are incorporated in one, finish absorption in same hole inside and test two processes, the length of Dui Ying test metal probe is less than the height of main support platform thus; Described test metal probe is provided with the probe springs bearing base of avoiding grating back of the body contact crystalline silicon solar cell surface, and the test access that the diameter of described probe springs bearing base equals test macro forms piston apparatus.
Useful result of the present invention is:
(1) the present invention is the test platform that utilizes back of the body contact solar cell characteristics and come out in conjunction with conventional solar cell test technology equipment development, and is simple in structure, multiple functional, to measure cost low and simple to operate, the integrated application of accomplishing scale production easily.
(2) the present invention carries on the back the contact crystalline silicon solar cell test platform, and the process optimization that contacts solar cell for the back of the body has good directive function.
(3) the present invention carries on the back the contact crystalline silicon solar cell test platform and is not limited to a kind of back of the body contact crystalline silicon solar cell, has universality for different structure back of the body contact crystalline silicon solar cell.
Description of drawings
Fig. 1 is the test macro sketch of existing back of the body contact crystalline silicon solar cell;
Fig. 2 is the side schematic view of test platform embodiment one of the present invention;
Fig. 3 is the side schematic view of test platform embodiment two of the present invention;
Fig. 4 is the structural representation of main support platform of the present invention;
Fig. 5 is the structural representation of test metal probe of the present invention;
Fig. 6 has the IV parameter of curve figure of MWT back of the body contact crystalline silicon solar cell for embodiment of the invention test gained.
Among Fig. 1-5: 101, light source; 102, solar simulator; 103, back of the body contact crystalline silicon solar cell; 104, calibration crystal-silicon solar cell; 105, test probe; 106, data are handled and the temperature control center; 107, data display equipment; 200, main support platform; 201, back of the body contact crystalline silicon solar cell; 202, back side contact electrode; 203, vacuum cup; 204, vacuum suction path; 205, test access; 206, test metal probe; 207, temperature control connects the loop; 208, probe springs bearing base.
Embodiment
A kind of test platform that is applicable to back of the body contact crystalline silicon solar cell provided by the invention, comprise main support platform 200, test macro, adsorption system and temperature control system, main support platform 200 is as the objective table of back of the body contact crystalline silicon solar cell 201, test macro, adsorption system and temperature control system are integrated in the main support platform 200 simultaneously, wherein temperature control system is located at main support platform 200 inside, constitute temperature control by some through holes and connect loop 207, pass to uniform temperature and flow velocity liquid in the through hole, guarantee that main support platform 200 is in set temperature value; Test macro is located at inside and the surface of main support platform 200, constitutes test access 205 by some through holes, and through hole passes inside and the surface of main support platform 200, and through hole inside passes to test metal probe 206; Adsorption system is made of vacuum cup 203 and vacuum suction path 204, vacuum cup 203 is located at the surface of main support platform 200, vacuum suction path 204 forms in the inside of main support platform 200 and connects the loop, vacuum cup 203 and vacuum suction path 204 are communicated with, and vacuum suction path 204 passes to air-flow so that vacuum cup 203 is finished the absorption to back of the body contact crystalline silicon solar cell 201.Main support platform of the present invention is made by the good material of heat conductivility, as materials such as copper or aluminium.Insulation fully between test metal probe and the main support platform is in order to avoid phenomenon such as generation electric leakage and influence test result.The present invention specifically has following two kinds of embodiments:
Embodiment 1
As shown in Figure 2, the vacuum suction path 204 of the adsorption system of present embodiment separately exists in the inside of main support platform 200, finish adsorption function by the individual air stream path, the length of Dui Ying test metal probe 206 is greater than the height of main support platform 200 thus; Test metal probe 206 is provided with the probe springs bearing base 208 of avoiding grating back of the body contact crystalline silicon solar cell 201 surfaces, and the diameter of probe springs bearing base 208 is greater than the test access 205 of test macro.
In test process, back of the body contact crystalline silicon solar cell 201 is positioned at main support platform 200 tops, the vacuum cup 203 that is positioned at main support platform 200 front surfaces adsorbs by 204 pairs of back ofs the body of vacuum suction path contact crystalline silicon solar cell 201 through external vacuum pumping source pumping, back of the body contact crystalline silicon solar cell 201 by the temperature control perforation 207 pairs of absorption in loop carries out the temperature control setting simultaneously, the assurance test platform is worked a fixed temperature scope, the test metal probe 206 that has probe springs bearing base 208 contacts with the back side contact electrode 202 of back of the body contact crystalline silicon solar cell 201 after temperature stabilization by test access 205, carry out test job, after light source exposure and data acquisition process, vacuum suction system lost efficacy, back of the body contact crystalline silicon solar cell 201 breaks away from main support platform 200, finishes measuring process.It is 10N that present embodiment is selected absorption affinity, and 25 degrees centigrade of pure water loop temperature-controls of constant temperature are chosen in temperature control.
As shown in Figure 3, the vacuum suction path 204 of the adsorption system of present embodiment is incorporated in one with the test access 205 of test macro, finish absorption in same hole inside and test two processes, the length of Dui Ying test metal probe 206 is less than the height of main support platform 200 thus; Test metal probe 206 is provided with the probe springs bearing base 208 of avoiding grating back of the body contact crystalline silicon solar cell 201 surfaces, and the test access 205 that the diameter of probe springs bearing base 208 equals test macro forms piston apparatus.
The difference of the maximum of present embodiment and embodiment 1 is to adsorb path 204 and test access 205 and is incorporated in probe springs bearing base 208 and the test metal probe 206 that one and employing have the piston apparatus effect and tests.In test process, back of the body contact crystalline silicon solar cell 201 is positioned at main support platform 200 tops, the vacuum cup 203 that is positioned at main support platform 200 front surfaces adsorbs by 204 pairs of back ofs the body of vacuum suction path contact crystalline silicon solar cell 201 through external vacuum pumping source pumping, back of the body contact crystalline silicon solar cell 201 by the temperature control perforation 207 pairs of absorption in loop carries out the temperature control setting simultaneously, the assurance test platform is worked a fixed temperature scope, the test probe 206 that has probe springs bearing base 208 contacts with the back side contact electrode 202 of back of the body contact crystalline silicon solar cell 201 after temperature stabilization by test access 205, carry out test job, after light source exposure and data acquisition process, vacuum suction system lost efficacy, back of the body contact crystalline silicon solar cell 201 breaks away from main support platform 200, finishes measuring process.It is 15N that present embodiment is selected absorption affinity, and 25 degrees centigrade of pure water loop temperature-controls of constant temperature are chosen in temperature control.
The present invention will be described more than to enumerate specific embodiment.It is pointed out that embodiment only for the invention will be further described, does not represent protection scope of the present invention, nonessential modification and adjustment that other people prompting according to the present invention is made still belong to protection scope of the present invention.
Claims (10)
1. one kind is applicable to the test platform of carrying on the back contact crystalline silicon solar cell, it is characterized in that: comprise main support platform (200), test macro, adsorption system and temperature control system, described main support platform (200) is as the objective table of back of the body contact crystalline silicon solar cell (201), described test macro, adsorption system and temperature control system are integrated in the described main support platform (200) simultaneously, wherein temperature control system is located at main support platform (200) inside, constitute temperature control by some through holes and connect loop (207), pass to uniform temperature and flow velocity liquid in the through hole, guarantee that main support platform (200) is in set temperature value; Test macro is located at inside and the surface of main support platform (200), constitutes test access (205) by some through holes, and through hole passes inside and the surface of main support platform (200), and through hole inside passes to test metal probe ((206); Adsorption system is made of vacuum cup (203) and vacuum suction path (204), vacuum cup (203) is located at the surface of main support platform (200), vacuum suction path (204) forms in the inside of main support platform (200) and connects the loop, vacuum cup (203) and vacuum suction path (204) are communicated with, and vacuum suction path (204) passes to air-flow so that vacuum cup (203) is finished the absorption to back of the body contact crystalline silicon solar cell (201).
According to claim 1 be applicable to the back of the body contact crystalline silicon solar cell test platform, it is characterized in that: the vacuum suction path (204) of described adsorption system separately exists in the inside of main support platform (200), finishes adsorption function by the individual air stream path.
According to claim 2 be applicable to the back of the body contact crystalline silicon solar cell test platform, it is characterized in that: the length of described test metal probe (206) is greater than the height of main support platform (200).
According to claim 3 be applicable to the back of the body contact crystalline silicon solar cell test platform, it is characterized in that: described test metal probe (206) is provided with the probe springs bearing base (208) of avoiding grating back of the body contact crystalline silicon solar cell (201) surface, and the diameter of described probe springs bearing base (208) is greater than the test access (205) of test macro.
According to claim 1 be applicable to the back of the body contact crystalline silicon solar cell test platform, it is characterized in that: the vacuum suction path (204) of described adsorption system is incorporated in one with the test access (205) of test macro, finishes absorption in same hole inside and tests two processes.
According to claim 5 be applicable to the back of the body contact crystalline silicon solar cell test platform, it is characterized in that: the length of described test metal probe (206) is less than the height of main support platform (200).
According to claim 6 be applicable to the back of the body contact crystalline silicon solar cell test platform, it is characterized in that: described test metal probe (206) is provided with the probe springs bearing base (208) of avoiding grating back of the body contact crystalline silicon solar cell (201) surface, and the test access (205) that the diameter of described probe springs bearing base (208) equals test macro forms piston apparatus.
8. according to each described test platform that is applicable to back of the body contact crystalline silicon solar cell of claim 1-7, it is characterized in that: described main support platform (200) is made by the good material of heat conductivility.
According to claim 8 be applicable to the back of the body contact crystalline silicon solar cell test platform, it is characterized in that: the material that described heat conductivility is good is copper or aluminium.
10. the test platform that is applicable to back of the body contact crystalline silicon solar cell according to claim 9 is characterized in that: insulation fully between described test metal probe (206) and the main support platform (200).
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| CN201310227224.1A CN103336234B (en) | 2013-06-08 | 2013-06-08 | A kind of test platform being applicable to back contacts crystal-silicon solar cell |
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| CN201310227224.1A CN103336234B (en) | 2013-06-08 | 2013-06-08 | A kind of test platform being applicable to back contacts crystal-silicon solar cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106771943A (en) * | 2015-11-18 | 2017-05-31 | 三菱电机株式会社 | The evaluating apparatus of semiconductor device and the evaluation method of semiconductor device |
| CN109148332A (en) * | 2018-07-18 | 2019-01-04 | 凯盛光伏材料有限公司 | One kind is for testing photovoltaic module reverse current overload measurement platform |
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| CN201508401U (en) * | 2009-06-26 | 2010-06-16 | 北京卓立汉光仪器有限公司 | Solar battery piece test device |
| US20120025837A1 (en) * | 2010-08-02 | 2012-02-02 | Sunpower Corporation | Method to dice back-contact solar cells |
| US20120105088A1 (en) * | 2010-10-29 | 2012-05-03 | Applied Materials, Inc. | Apparatus and method for testing back-contact solar cells |
| CN202453462U (en) * | 2012-02-01 | 2012-09-26 | 杭州大华仪器制造有限公司 | Multifunctional testing device for overall characteristics of solar cell |
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Patent Citations (5)
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| CN201508401U (en) * | 2009-06-26 | 2010-06-16 | 北京卓立汉光仪器有限公司 | Solar battery piece test device |
| US20120025837A1 (en) * | 2010-08-02 | 2012-02-02 | Sunpower Corporation | Method to dice back-contact solar cells |
| US20120105088A1 (en) * | 2010-10-29 | 2012-05-03 | Applied Materials, Inc. | Apparatus and method for testing back-contact solar cells |
| CN202453462U (en) * | 2012-02-01 | 2012-09-26 | 杭州大华仪器制造有限公司 | Multifunctional testing device for overall characteristics of solar cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106771943A (en) * | 2015-11-18 | 2017-05-31 | 三菱电机株式会社 | The evaluating apparatus of semiconductor device and the evaluation method of semiconductor device |
| US10495668B2 (en) | 2015-11-18 | 2019-12-03 | Mitsubishi Electric Corporation | Evaluation apparatus for semiconductor device and evaluation method for semiconductor device |
| CN109148332A (en) * | 2018-07-18 | 2019-01-04 | 凯盛光伏材料有限公司 | One kind is for testing photovoltaic module reverse current overload measurement platform |
| CN109148332B (en) * | 2018-07-18 | 2024-03-01 | 凯盛光伏材料有限公司 | Reverse current overload test bench for testing photovoltaic module |
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