CN102044592B - Vacuum pressing method for solar battery component - Google Patents
Vacuum pressing method for solar battery component Download PDFInfo
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- CN102044592B CN102044592B CN2009102062815A CN200910206281A CN102044592B CN 102044592 B CN102044592 B CN 102044592B CN 2009102062815 A CN2009102062815 A CN 2009102062815A CN 200910206281 A CN200910206281 A CN 200910206281A CN 102044592 B CN102044592 B CN 102044592B
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a vacuum pressing method for a solar battery component aiming at the shortage that bubbles are generated around the battery component because glass is rebounded and bent outwards to stress an outwards pull-out tension on a hot melt adhesive to enable air to enter the hot melt adhesive in a cooling process under a reduced pressure after a pressing process is finished when the solar battery component is pressed in vacuum in the prior art. The vacuum pressing method comprises the following two steps of: a, a high-temperature vacuum pressing step, namely pressurizing the battery component to the pressure of 0.03 to 0.1 MPa after vacuumizing at the temperature of greater than or equal to the melting temperature of the hot melt adhesive and keeping the pressure for 10 to 30 minutes; and b, a low-temperature vacuum pressing step, pressurizing the battery component to the pressure of 0.03 to 0.1 MPa after vacuumizing at the temperature of less than or equal to the melting temperature of the hot melt adhesive and keeping the pressure for 5 to 30 minutes. No bubble is generated around the battery component by pressing the solar battery component by adopting the method.
Description
Technical field
The present invention relates to the vacuum pressing method of a solar module, particularly relate to the vacuum pressing method of the solar module of compound glass.
Background technology
Current, solar module mainly divides the conventional solar cells assembly of glass and the encapsulation of flexible backing and the special solar module of glass and the encapsulation of rigid backing, rigid backing mainly contains glass, ceramic wafer, extruded sheet etc., the solar module that this kind is special mainly is divided into again two kinds, and a kind of is the crystal silicon battery assembly, its structure is that the upper strata is glass, lower floor is rigid backing, and the centre is crystal silicon battery, bonds by PUR between above-mentioned three; Another kind of battery component is amorphous silicon cell component, its structure mainly contains two kinds: a kind ofly be comprised of amorphous silicon battery and rigid backing, the two bonds by PUR, another kind of battery component is that the upper strata is that glass, lower floor are that rigid backing, intermediate layer are amorphous silicon battery, bonds by PUR between the three.All adopt the once technique of pressurization when at present manufacture of solar cells person suppresses solar module: battery component is warming up to more than the melting point temperature of PUR or closes on the melting point of PUR-simultaneously solar module is vacuumized rear compacting--suppress complete battery component and enter into next procedure, above-mentioned drawing method is called as high temperature hot pressing technique, when adopting the battery component of said method compacting compound glass, the PUR fusing of bonding battery and glass and rigid backing, the PUR that is positioned at the battery component edge flows out to outside the battery component, so that the PUR amount at battery component edge reduces, under the effect of vacuum pressure, its edge of glass that is positioned at the upper strata is bent downwardly, complete when suppressing, get rid of the edge resilience under the effect of back stretch that is positioned at the crooked glass in top behind the pressure on the battery component, so that the power F that glue is outwards pulled open, simultaneously, the cooling rate of battery component its outside in cooling procedure is higher than its inner cooling rate, be positioned at, lower two-layer glass is under the effect of expanding with heat and contract with cold, the glass outer surface contraction speed is higher than the contraction speed of interior surfaces of glass, so that the edge of glass has outside convergent force, like this so that the tensile force f that PUR is outwards pulled open, under the effect of above-mentioned two kinds of outside tensile force fs, the PUR that is positioned at the battery component edge outwards separately makes gas enter, around battery component, produce steam bubble, reduced quality and the rate of finished products of battery component.
Summary of the invention
The objective of the invention is to solve in the drawing method of battery component in the prior art, after pressing process is finished in the process of decompression cooling the outside resilience of glass and bending so that the pulling force that PUR is outwards pulled open and gas is entered in the PUR, produce the deficiency of steam bubble around causing battery component, thereby provide a kind of vacuum pressing method that makes battery component not produce steam bubble on every side to improve the quality of battery component.
The objective of the invention is to be achieved through the following technical solutions:
A kind of vacuum pressing method of solar module comprises following two steps:
A, high-temperature vacuum pressing step: pressurize is 10 minutes-30 minutes under the pressure at 0.03Mpa-0.1MPa after battery component being vacuumized under more than or equal to the fusion temperature of PUR;
B, cryogenic vacuum pressing step: pressurize is 3 minutes-30 minutes under the pressure at 0.03Mpa-0.1MPa after battery component being vacuumized under less than or equal to the fusion temperature of PUR;
In described high-temperature vacuum pressing step, preferred temperature is 100 ℃-200 ℃, and the time that vacuumizes is 100 seconds-600 seconds, pressure be 0.03Mpa to 0.1MPa, the dwell time is 10 minutes-30 minutes; In described cryogenic vacuum pressing step, preferred temperature is 0 ℃-110 ℃, and the time that vacuumizes is 0 minute-10 minutes, and pressure is 0.03MPa-0.1MPa, and the vacuum dwell time is 3 minutes-30 minutes;
In described high-temperature vacuum pressing step, preferred temperature is 100 ℃-180 ℃, and the time that vacuumizes is 100 seconds-600 seconds, pressure be 0.03Mpa to 0.1MPa, the dwell time is 10 minutes-30 minutes; In described cryogenic vacuum pressing step, preferred temperature is 20 ℃-100 ℃, and the time that vacuumizes is 0 minute-10 minutes, and pressure is 0.03MPa-0.1MPa, and the dwell time is 3 minutes-30 minutes;
In described high-temperature vacuum pressing step, preferred temperature is 120 ℃-200 ℃, and the time that vacuumizes is 100 to 600 seconds, and pressure is 0.03MPa-0.1MPa, and the dwell time is 10 minutes-30 minutes; In described cryogenic vacuum pressing step, preferred temperature is 10 ℃-100 ℃, and the time that vacuumizes is 0 minute-10 minutes, and pressure is 0.03MPa-0.1MPa, and the dwell time is 3 minutes-30 minutes;
Described PUR is a kind of among PVB and the EVA.
Adopt method compacting solar module of the present invention, owing to namely battery component is carried out cryogenic vacuum compacting in that high temperature hot pressing is complete, the temperature of vacuum pressing is lower than the fusion temperature of PUR on the lamination slave, on can preventing in cooling procedure, the outside stretcher strain of lower-glass, removed the outside tensile force of glass deformation to PUR, thereby prevent separating of PUR, avoid gas to enter in the PUR, in addition, even battery component is when being sent to the lamination slave by the lamination main frame, there is a small amount of gas to enter in the PUR, owing to carry out the cryogenic vacuum compacting in the lamination slave, therefore can get rid of the gas in the PUR, so that the edge of battery component, has improved rate of finished products and the quality of battery component without bubble.
Description of drawings
Fig. 1 is crystal silicon battery modular construction schematic diagram in the prior art;
Fig. 2 is amorphous silicon cell component structural representation in the prior art;
Fig. 3 is another kind of amorphous silicon cell component structural representation in the prior art;
Fig. 4 be in the prior art during lamination of solar battery components because PUR flows out glass deformation situation schematic diagram;
Fig. 5 be in the prior art solar module layer after pressing in the process of decompression, cooling the outside resilience of glass and bending cause glass deformation situation schematic diagram;
Fig. 6 is the used vacuum type solar module laminating machine of the present invention structural representation.
1 is that glass plate 2 is lamination main frame for crystal silicon battery 6 for lamination slave 7 for amorphous silicon battery 5 for rigid backing 4 for PUR 3
Embodiment
The present invention will be further described below in conjunction with embodiment:
The vacuum pressing method of solar module of the present invention is particularly useful for the situation that battery component is bilayer or compound glass, comprise that also it is ceramic wafer that one side is wherein arranged, the battery component of the rigid backing such as extruded sheet, it comprises following two steps: a, high-temperature vacuum pressing step and b, the cryogenic vacuum pressing step, drawing method in the high-temperature vacuum pressing step is identical with existing vacuum pressing method, pressurize under certain pressure after battery component being vacuumized under more than or equal to the fusion temperature of PUR, its pumpdown time is 100 seconds to 600 seconds, pressure be 0.03MPa to 0.1MPa, the dwell time is 10 to 30 minutes; The cryogenic vacuum pressing step is: after battery component being vacuumized under less than or equal to the fusion temperature of PUR, pressurize under certain pressure, the pumpdown time is 0 minute to 10 minutes, pressure be 0.03Mpa to 0.1MPa, the dwell time is 3 minutes-30 minutes; In the preferred high-temperature vacuum pressing step, temperature is 100 ℃-200 ℃, and the time that vacuumizes is 100 seconds-600 seconds, and pressure is 0.03Mpa-0.1MPa, and the dwell time is 10 minutes-30 minutes; In the cryogenic vacuum pressing step, temperature is 0 ℃-110 ℃, and the time that vacuumizes is 0 minute-10 minutes, and pressure is 0.03MPa-0.1MPa, and the vacuum dwell time is 3 minutes-30 minutes; When selecting the PVB PUR, preferred vacuum pressing temperature is 120 ℃-200 ℃ in the high-temperature vacuum pressing step, pumpdown time is 100 seconds to 600 seconds, pressure is 0.03MPa-0.1MPa, dwell time is 10-30 minute, and preferred temperature is 10 ℃-100 ℃ in the cryogenic vacuum pressing step, and the pumpdown time is 0 minute to 10 minutes, pressure is 0.03MPa-0.1MPa, and the dwell time is 3 minutes-30 minutes; When selecting the EVA PUR, preferred vacuum pressing temperature is 100 ℃-180 ℃ in the high-temperature vacuum pressing step, pumpdown time is 100 seconds to 600 seconds, pressure is 0.03MPa-0.1MPa, dwell time is 10 minutes-30 minutes, and preferred temperature is 20 ℃-100 ℃ in the cryogenic vacuum pressing step, and the pumpdown time is 0 minute to 10 minutes, pressure is 0.03MPa-0.1MPa, and the dwell time is 3 minutes-30 minutes.Under normal circumstances, the EVA PUR can melt in 60 ℃ of-80 ℃ of scopes, and the PVB PUR can melt in 80 ℃ of-95 ℃ of scopes.
For realizing method of the present invention, need laminating machine of the prior art is improved, as shown in Figure 6, on the basis of existing vacuum type solar module laminating machine structure, behind lamination main frame 7, set up a lamination slave 6, its structure can be identical with the structure of existing lamination of solar battery components main frame, the structure of lamination main frame 7 and this lamination slave 6 can be identical also can be different, as long as can finish vacuum pressing work, such as adopting the lamination main machine structure of putting down in writing in the following file: 1, the patent No. is 03210105.8, Granted publication day is on October 13rd, 2004, Granted publication number is CN2648608Y, name is called the Chinese utility model patent of " the solar module laminating machine that band transmits "; 2, the patent No. is 200520104678.0, to be called " solar module laminating machine ", notification number date be that Chinese utility model patent 3, the patent No. that January 17, notification number in 2007 are CN2859810Y are that to be called " double containment solar module laminating machine ", notification number date be that October 13, notification number in 2004 are the Chinese utility model patent of CN2648607Y for 03210104.X, name to name; 4, application number is 03150605.4, name is called " the solar module laminating machine of oily heating work platform ", discloses day is that March 9, publication number in 2005 are the Chinese utility model patent of CN1591913A.The lamination station of lamination main frame and this lamination slave should be on same plane, so that laminated compenent transmits smoothly.Certainly also many lamination slaves 6 can be set behind the lamination main frame.
During the compacting battery component, workpiece passes from preceding working procedure and is sent on the lamination station of lamination main frame, finish the high-temperature vacuum pressing step at the lamination main frame, then laminated compenent is transferred on the lamination station of lamination slave and finishes the cryogenic vacuum pressing step, then enters next procedure.Carry out the cryogenic vacuum compacting owing to enter into immediately the lamination slave at the rear battery component of high-temperature vacuum compacting, the temperature of vacuum pressing is lower than the fusion temperature of PUR, on can preventing in cooling procedure, the outside stretcher strain of lower-glass, removed the outside pulling-off force F of glass deformation to PUR, thereby prevent separating of PUR, avoid gas to enter in the PUR, in addition, even battery component is when being sent to the lamination slave by the lamination main frame, there is a small amount of gas to enter in the PUR, owing to carry out the cryogenic vacuum compacting in the lamination slave, therefore can get rid of the gas in the PUR, so that the edge of battery component, has improved rate of finished products and the quality of battery component without bubble.
Adopt EVA as PUR, the press temperature that the lamination main frame is set is 100 ℃, and the pumpdown time is 1 minute, and moulding pressure is 0.03Mpa, and the dwell time is 25 minutes; The temperature that the lamination slave is set is 20 ℃, and the time that vacuumizes is 10 minutes, and pressure is 0.03MPa, and the dwell time is 30 minutes.
Adopt EVA as PUR, the press temperature that the lamination main frame is set is 160 ℃, and the pumpdown time is 4 minutes, and pressure is 0.06MPa, and the dwell time is 10 minutes; The temperature that the lamination slave is set is 65 ℃, and the time that vacuumizes is 3 minutes, and pressure is 0.06MPa, and the dwell time is 10 minutes.
Adopt EVA as PUR, the press temperature that the lamination main frame is set is 145 ℃, and the pumpdown time is 6 minutes, and pressure is 0.06MPa, and the dwell time is minutes 12 minutes; The temperature that the lamination slave is set is 62 ℃, and the time that vacuumizes is 3 minutes, and pressure is 0.06MPa, and the dwell time is 10 minutes.
Embodiment 5
Adopt PVB as PUR, the press temperature that the lamination main frame is set is 180 ℃, and the pumpdown time is 4 minutes, and pressure is 0.06MPa, and the dwell time is minutes 10 minutes; The temperature that the lamination slave is set is 85 ℃, and the time that vacuumizes is 2 minutes, and pressure is 0.06MPa, and the dwell time is 10 minutes.
Embodiment 6
Adopt PVB as PUR, the press temperature that the lamination main frame is set is 200 ℃, and the pumpdown time is 3 minutes, and pressure is 0.05MPa, and the dwell time is 20 minutes; The temperature that the lamination slave is set is 90 ℃, and the time that vacuumizes is 2 minutes, and pressure is 0.06Mpa, and the dwell time is 20 minutes.
Embodiment 7
Adopt EVA as PUR, the press temperature that the lamination main frame is set is 180 ℃, and the pumpdown time is 3 minutes, and pressure is 0.1MPa, and the dwell time is 30 minutes; The temperature that the lamination slave is set is 100 ℃, and pressure is 0.1MPa, and the dwell time is 20 minutes.
Embodiment 8
Adopt PVB as PUR, the press temperature that the lamination main frame is set is 120 ℃, and the pumpdown time is 1 minute, and pressure is 0.03MPa, and the dwell time is 30 minutes; The temperature that the lamination slave is set is 10 ℃, and the time that vacuumizes is 10 minutes, and pressure is 0.03Mpa, and the dwell time is 30 minutes.
Embodiment 9
Adopt PVB as PUR, the press temperature that the lamination main frame is set is 140 ℃, and the pumpdown time is 5 minutes, and pressure is 0.1MPa, and the dwell time is 25 minutes; The temperature that the lamination slave is set is 100 ℃, and pressure is 0.1Mpa, and the dwell time is 3 minutes.
Embodiment 10
Adopt the ordinary hot melten gel, the press temperature that the lamination main frame is set is 140 ℃, and the pumpdown time is 5 minutes, and pressure is 0.1MPa, and the dwell time is 25 minutes; The temperature that the lamination slave is set is 0 ℃, and pressure is 0.1Mpa, and the dwell time is 3 minutes.
Embodiment 11
Adopt the ordinary hot melten gel, the press temperature that the lamination main frame is set is 190 ℃, and the pumpdown time is 3 minutes, and pressure is 0.4MPa, and the dwell time is 10 minutes; The temperature that the lamination slave is set is 110 ℃, and the pumpdown time is 20 minutes, and pressure is 0.05Mpa, and the dwell time is 18 minutes.
Claims (5)
1. the vacuum pressing method of a solar module, it is characterized in that: it comprises following two steps:
A, high-temperature vacuum pressing step: pressurize is 10 minutes-30 minutes under the pressure at 0.03Mpa-0.1MPa after battery component being vacuumized under more than or equal to the fusion temperature of PUR;
B, cryogenic vacuum pressing step: pressurize is 3 minutes-30 minutes under the pressure at 0.03Mpa-0.1MPa after battery component being vacuumized under less than or equal to the fusion temperature of PUR.
2. the vacuum pressing method of a kind of solar module as claimed in claim 1, it is characterized in that: in described high-temperature vacuum pressing step, described temperature is 100 ℃-200 ℃, the described time that vacuumizes is 100 seconds-600 seconds, described pressure is 0.03Mpa-0.1MPa, and the described dwell time is 10 minutes-30 minutes; In described cryogenic vacuum pressing step, described temperature is 0 ℃-110 ℃, and the described time that vacuumizes is 0 minute-10 minutes, and described pressure is 0.03MPa-0.1MPa, and the described vacuum dwell time is 3 minutes-30 minutes.
3. the vacuum pressing method of a kind of solar module as claimed in claim 1, it is characterized in that: in described high-temperature vacuum pressing step, described temperature is 100 ℃-180 ℃, the described time that vacuumizes is 100 seconds-600 seconds, described pressure be 0.03Mpa to 0.1MPa, the described dwell time is 10 minutes-30 minutes; In described cryogenic vacuum pressing step, described temperature is 20 ℃-100 ℃, and the described time that vacuumizes is 0 minute-10 minutes, and described pressure is 0.03MPa-0.1MPa, and the described dwell time is 3 minutes-30 minutes.
4. the vacuum pressing method of a kind of solar module as claimed in claim 1, it is characterized in that: in described high-temperature vacuum pressing step, described temperature is 120 ℃-200 ℃, the described time that vacuumizes is 100 to 600 seconds, described pressure is 0.03MPa-0.1MPa, and the described dwell time is 10 minutes-30 minutes; In described cryogenic vacuum pressing step, described temperature is 10 ℃-100 ℃, and the described time that vacuumizes is 0 minute-10 minutes, and described pressure is 0.03MPa-0.1MPa, and the described dwell time is 3 minutes-30 minutes.
5. the vacuum pressing method of a kind of solar module as claimed in claim 1 or 2 is characterized in that: described PUR is a kind of among PVB and the EVA.
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| CN2009102062815A CN102044592B (en) | 2009-10-16 | 2009-10-16 | Vacuum pressing method for solar battery component |
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| CN2009102062815A CN102044592B (en) | 2009-10-16 | 2009-10-16 | Vacuum pressing method for solar battery component |
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| CN102044592B true CN102044592B (en) | 2013-04-03 |
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| CN103042806A (en) * | 2011-10-17 | 2013-04-17 | 阿特斯(中国)投资有限公司 | Manufacturing method of double-glass photovoltaic component |
| CN102632678A (en) * | 2012-04-27 | 2012-08-15 | 保定天威薄膜光伏有限公司 | Solar cell module lamination method |
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Address after: Jincheng Road, Beidaihe Development Zone in Hebei Province, Qinhuangdao City, No. 15, 066100 Applicant after: Qinhuangdao Boostsolar Photovoltaic Equipment Co., Ltd. Address before: Jincheng Road, Beidaihe Development Zone in Hebei Province, Qinhuangdao City, No. 15, 066100 Applicant before: Qinhuangdao Boostsolar Photovoltaic Equipment Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: QINHUANGDAO BOOSTSOLAR PHOTOVOLTAIC EQUIPMENT CO., LTD. TO: QINHUANGDAO BOOSTSOLAR PHOTOVOLTAIC EQUIPMENT SHARES CO., LTD. |
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