CN102820381A - Method for producing high-voltage-output solar cell by lamination method - Google Patents
Method for producing high-voltage-output solar cell by lamination method Download PDFInfo
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- CN102820381A CN102820381A CN2012103179851A CN201210317985A CN102820381A CN 102820381 A CN102820381 A CN 102820381A CN 2012103179851 A CN2012103179851 A CN 2012103179851A CN 201210317985 A CN201210317985 A CN 201210317985A CN 102820381 A CN102820381 A CN 102820381A
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a method for producing a high-voltage-output solar cell by a lamination method. The method includes the steps: firstly, cleaning solar cell slices; secondly, computing the required solar cell slice number according to required module output voltage, overlying multiple solar cell slices of the same specification in a same-direction lamination mode, namely, enabling the back side of one preceding solar cell slice to face the front side of the subsequent solar cell slice, and arranging a conductive adhesion part between each two adjacent solar cell slices; thirdly, enabling each conductive adhesion part to connect the solar cell slices in front of and behind the same firmly by a technological means, and performing local processing so that a cell slice module is obtained; and fourthly, horizontally cutting the cell slice module so that a finished product is obtained. By the method, the high-voltage-output solar cell is obtained by innovatively changing a series connection mode of the solar cell, so that size miniaturization and high voltage output of the solar cell module can be achieved. Besides, the method is simple in process steps and high in flexibility.
Description
Technical field
The present invention relates to technical field of solar batteries, particularly a kind of employing laminating method, the preparation of realization has the method for the solar cell of high voltage output.
Background technology
Solar cell is an a kind of because photovoltaic effect and solar energy is converted into the device of electric energy, when solar irradiation is to solar cell, will become electric energy to the luminous energy of the sun through its photovoltaic effect, produces electric current.Solar cell is a kind of coming novel power supply, has permanent, spatter property and flexibility three big advantages.Solar battery life is long, as long as the sun exists, solar cell just can once be invested and long-term the use; Compare with thermal power generation, nuclear energy power generation, solar cell can not cause environmental pollution; Solar cell can large, medium and smallly develop simultaneously, and arrives the medium-sized solar cell array of gigawatt greatly, and is little of the solar module that only supplies a family to use, and this is that other power supply is incomparable.
The solar module of existing acquisition certain voltage normally adopts the panel type compound mode; Being about to the multi-disc solar battery sheet is serially connected; Each battery sheet is isolated each other; Adopt the lamination mode to be laid on the base plate, lay level and be followed successively by toughened glass, EVA, battery, EVA, TPT backboard from bottom to top, the series-connected solar cells sheet that adopts usually is 36 or 72.
The benefit of adopting in such a way is that the multicompartment assembling is convenient in the manufacturing process standardization; Its shortcoming is that area occupied is bigger, and monolithic can not obtain higher voltage.
Summary of the invention
In view of this, one of the object of the invention provides the method that a kind of novel employing stacked system is made high voltage output solar cell.Creatively change the series system of solar battery sheet, can under the condition of small size more, realize high voltage output; Two of the object of the invention provides a kind of high voltage solar module.
One of the object of the invention is realized through following technical scheme:
Employing stacked system of the present invention is made the method for high voltage output solar cell, may further comprise the steps:
Step 1: solar battery sheet is cleaned;
Step 2: module output voltage as required; Calculate the good solar battery sheet sheet number that needs series connection; Adopting the solar battery sheet of multi-disc same size in the same way, the mode of lamination overlaps together; The back side of a slice solar battery sheet is provided with conduction adhesion thing towards the front of back a slice solar battery sheet promptly between the adjacent solar battery sheet;
Step 3: adopt technological means to make conduction adhesion thing firmly connect the solar battery sheet of its front and back, carry out Local treatment, obtain the battery chip module;
Step 4: the battery chip module is carried out horizontal resection, obtain to realize the solar module of high voltage output.
Further, said method also comprises step 5, and the periphery that is about to module plates protective layer, obtains finished product.
Further, among the present invention, the conduction adhesion thing described in the said step 2 is an aluminium foil, and the dimensions and the solar battery sheet of said aluminium foil are similar, and when adopting aluminium foil, the technological means that adopts in the said step 3 may further comprise the steps:
Step 31): assembly is put into heater heat, heating-up temperature is 500 ℃ ~ 1000 ℃, and the time is 1 ~ 3min;
Step 32): but the battery chip module after will heating is put into closed chamber, but slowly extract the air in the closed chamber, make it to form negative pressure, through the air bag of exerting pressure of both sides the head and the tail battery sheet of battery chip module is exerted pressure, make it to realize firm adhesion;
Step 33): the battery chip module after the pressing is put into heater, under 250 ℃ ~ 300 ℃ condition, leave standstill 20 ~ 30min, take out then and naturally cool to ambient temperature;
Local treatment in the said step 3 is because during pressing, aluminium foil solidify to form burr owing to pressure stretches out, so need be with its excision behind the assembly natural cooling.
In addition, the conduction adhesion thing described in the step 2 also can adopt aluminium paste, and aluminium paste is brushed on the front and/or the back side of solar battery sheet, and when adopting aluminium paste, the technological means that adopts in the said step 3 may further comprise the steps:
Step 31): assembly is put into sintering equipment carry out sintering, sintering temperature is 500 ~ 900 ℃, and the time is 1 ~ 2min;
Step 32): the battery chip module that sintering is accomplished is put into heater, under 250 ℃ ~ 300 ℃ condition, leave standstill 20 ~ 30min, take out then and naturally cool to ambient temperature;
Local treatment in the said step 3 is the assembly behind the natural cooling to be carried out deflash handle;
Further; When adopting aluminium paste as conduction adhesion thing, in the said step 31, sintering is divided into oven dry, pre-burning, sintering and cooling four-stage; Wherein sintering stage is warming up to rapidly about 850 ℃ from 500 ℃; Sharply cool to then below 500 ℃, the used time of sintering stage is at 8-12s, and stops 3～5s at 850 ℃.
Further, said protective layer adopts individual layer silicon nitride or individual layer silicon dioxide, or both alternately preparations;
Further, the cleaning in the said step 1 is included in and carries out the manual work cleaning under the vacuum condition or pass through ultrasonic waves for cleaning;
Further, said solar battery sheet is monocrystalline silicon or polycrystalline silicon solar cell, and its positive and negative electrode is at the positive and negative of battery;
Further, in the said step 4, the high voltage solar cell both positive and negative polarity that cutting obtains is in both sides, and thickness is at 200-400 μ m.
Two of the object of the invention is realized through following technical scheme:
The solar cell that adopts foregoing method to make.
The invention has the beneficial effects as follows:
Changed to the invention property the series system of solar battery sheet; Can the miniaturization of implement device volume, satisfy the requirement of high voltage output simultaneously, a whole set of processing step is comparatively simple; Adopt existing making apparatus just can realize; And can produce battery module easily as required, have bigger flexibility with multiple power output.
Other advantages of the present invention, target and characteristic will be set forth in specification subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from practice of the present invention, obtain instruction to investigating of hereinafter.Target of the present invention and other advantages can realize and obtain through following specification and claims.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is made further detailed description below, wherein:
Accompanying drawing is a processing step flow chart of the present invention.
Embodiment
Below will carry out detailed description to the preferred embodiments of the present invention with reference to accompanying drawing.Should be appreciated that preferred embodiment has been merely explanation the present invention, rather than in order to limit protection scope of the present invention.
Employing lay-up method of the present invention is made the method for high voltage output solar cell, mainly may further comprise the steps:
Step 1: solar battery sheet is cleaned; In the present embodiment, clean to be included in and carry out the manual work cleaning under the vacuum condition or pass through ultrasonic waves for cleaning.
Step 2: module output voltage as required; Calculate the good solar battery sheet sheet number that needs; Adopt range upon range of in the same way mode to overlap together the solar battery sheet of multi-disc same size; The back side of a slice solar battery sheet is provided with conduction adhesion thing towards the front of back a slice solar battery sheet promptly between the adjacent solar battery sheet;
Step 3: adopt technological means to make conduction adhesion thing firmly connect the solar battery sheet of its front and back, carry out Local treatment, obtain the battery chip module;
Step 4: the battery chip module is carried out horizontal resection, obtain the solar module of height at 200-400 μ m.
Step 5: the periphery of module is plated protective layer, obtain finished product.
To adopt the different technologies of aluminium foil and aluminium paste to handle to conduction adhesion thing below describes.
One, conduction adhesion thing adopts aluminium foil, and the dimensions and the solar battery sheet of aluminium foil are similar, and when adopting aluminium foil, the technological means that adopts in the step 3 may further comprise the steps:
Step 31): assembly is put into heater heat, heating-up temperature is 500 ℃ ~ 1000 ℃, and the time is 1 ~ 3min;
Step 32): but the battery chip module after will heating is put into closed chamber, but slowly extract the air in the closed chamber, make it to form negative pressure, through the air bag of exerting pressure of both sides the head and the tail battery sheet of battery chip module is exerted pressure, make it to realize firm adhesion;
Step 33): the battery chip module after the pressing is put into heater, under 250 ℃ ~ 300 ℃ condition, leave standstill 20 ~ 30min, take out then and naturally cool to ambient temperature;
Local treatment in the step 3 is because during pressing, aluminium foil solidify to form burr owing to pressure stretches out, so need be with its excision behind the assembly natural cooling.
Two, conduction adhesion thing adopts aluminium paste, and aluminium paste is brushed on the front and/or the back side of solar battery sheet, and when adopting aluminium paste, the technological means that adopts in the said step 3 may further comprise the steps:
Step 31): assembly is put into sintering equipment carry out sintering, sintering temperature is 500 ~ 900 ℃, and the time length overall is 1 ~ 3min; Particularly, be to be divided into oven dry, pre-burning, sintering and cooling four-stage, wherein sintering stage is warming up to 850 ℃ rapidly from 500 ℃, sharply cool to then below 500 ℃, about during this period of time 8-12s, and only stop 3～5s at 850 ℃;
Step 32): the battery chip module that sintering is accomplished is put into heater, under 250 ℃ ~ 300 ℃ condition, leave standstill 20 ~ 30min, take out then and naturally cool to ambient temperature;
Local treatment in the step 3 is the assembly behind the natural cooling to be carried out deflash handle.
As further improvement, in step 5, protective layer adopts individual layer silicon nitride or individual layer silicon dioxide, or both alternately preparations.
Below will adopt concrete embodiment that whole process flow of the present invention is done a detailed explanation, in following examples, polysilicon solar battery slice is 125mm*125mm; Its front is a negative pole, and the back side is anodal, sets output 50v; Because the magnitude of voltage of each sheet solar battery sheet is about 0.5v; Therefore, when needing the output voltage of 50v, need to adopt 100 such solar battery sheets.
Embodiment one
Step 1: solar battery sheet is carried out manual work clean under vacuum condition;
Step 2: adopt range upon range of in the same way mode to overlap together the solar battery sheet of 100 same sizes, promptly the back side of preceding a slice solar battery sheet is provided with aluminium foil towards the front of back a slice solar battery sheet between the adjacent solar battery sheet;
Step 3: adopt technological means to make aluminium foil firmly connect the solar battery sheet of its front and back, obtain the battery chip module, may further comprise the steps:
Step 31: assembly is put into heater heat, heating-up temperature is 600 ℃, and the time is 3min;
Step 32: but the battery chip module after will heating is put into closed chamber, but slowly extract the air in the closed chamber, make it to form negative pressure, through the air bag of exerting pressure of both sides the head and the tail battery sheet of battery chip module is exerted pressure, make it to realize firm adhesion;
Step 33: the battery chip module after the pressing is put into heater, under 250 ℃ condition, leave standstill 30min, take out then and naturally cool to ambient temperature;
Step 34: aluminium foil solidify to form burr owing to pressure stretches out, behind the assembly natural cooling with its excision.
Step 4: the battery chip module is carried out horizontal resection, obtain the solar module of thickness at 320 μ m;
Step 5: the periphery of module is plated silicon dioxide layer of protection, and side vapor deposition top electrode obtains finished product.
Embodiment two
The difference of present embodiment and embodiment one is in the step 3 that the selection of relevant parameter is different, and the step 3 of present embodiment comprises following substep:
Step 31: assembly is put into heater heat, heating-up temperature is 600 ℃, and the time is 1min;
Step 32: but the battery chip module after will heating is put into closed chamber, but slowly extract the air in the closed chamber, make it to form negative pressure, through the air bag of exerting pressure of both sides the head and the tail battery sheet of battery chip module is exerted pressure, make it to realize firm adhesion;
Step 33: the battery chip module after the pressing is put into heater, under 280 ℃ condition, leave standstill 25min, take out then and naturally cool to ambient temperature;
Step 34: aluminium foil solidify to form burr owing to pressure stretches out, behind the assembly natural cooling with its excision.
In addition, in the step 4, the battery chip module is carried out horizontal resection, obtain the solar module of thickness at 200 μ m;
In step 5, the periphery of module is plated silicon nitride protective layer, side vapor deposition top electrode obtains finished product.
Embodiment three
The difference of present embodiment and embodiment one is in the step 3 that the selection of relevant parameter is different, and the step 3 of present embodiment comprises following substep:
Step 31: assembly is put into heater heat, heating-up temperature is 900 ℃, and the time is 1min;
Step 32: but the battery chip module after will heating is put into closed chamber, but slowly extract the air in the closed chamber, make it to form negative pressure, through the air bag of exerting pressure of both sides the head and the tail battery sheet of battery chip module is exerted pressure, make it to realize firm adhesion;
Step 33: the battery chip module after the pressing is put into heater, under 300 ℃ condition, leave standstill 20min, take out then and naturally cool to ambient temperature;
Step 34: aluminium foil solidify to form burr owing to pressure stretches out, behind the assembly natural cooling with its excision.
In addition, in the step 4, the battery chip module is carried out horizontal resection, obtain the solar module of thickness at 400 μ m;
In addition, in the step 5 of present embodiment, the protective layer of employing is to be coated with one deck silicon nitride earlier, and then is coated with the mode of layer of silicon dioxide, the protection better effects if.
Embodiment four
Step 1: solar battery sheet is cleaned; In the present embodiment, clean to be included in and carry out the manual work cleaning under the vacuum condition or pass through ultrasonic waves for cleaning.
Step 2: module output voltage as required; Calculate the good solar battery sheet sheet number that needs; Adopt range upon range of in the same way mode to overlap together the solar battery sheet of multi-disc same size; The back side of a slice solar battery sheet is provided with conduction adhesion thing towards the front of back a slice solar battery sheet promptly between the adjacent solar battery sheet;
Step 3: conduction adhesion thing adopts aluminium paste, and aluminium paste is brushed on the front and/or the back side of solar battery sheet, comprises following substep:
Step 31: assembly is put into sintering equipment carry out sintering, sintering temperature is 500 ~ 900 ℃, and the time length overall is 1 ~ 3min; In the present embodiment, sintering is divided into oven dry, pre-burning, sintering and cooling four-stage, and wherein sintering stage is warming up to rapidly about 850 ℃ from 500 ℃, sharply cools to then below 500 ℃, and the used time of sintering stage is at 8s, and stops 3s at 850 ℃.
Step 32: the battery chip module that sintering is accomplished is put into heater, under 250 ℃ condition, leave standstill 30min, take out then and naturally cool to ambient temperature;
Step 33: the assembly behind the natural cooling is carried out deflash handle.
Step 4: the battery chip module is carried out horizontal resection, obtain the solar module of thickness 320 μ m.
Step 5: the periphery of module is plated silicon dioxide layer of protection, and side vapor deposition top electrode obtains finished product.
Embodiment five
The difference of present embodiment and embodiment one is in the step 3 that the selection of relevant parameter is different, and the step 3 of present embodiment comprises following substep:
Step 31: assembly is put into sintering equipment carry out sintering, sintering temperature is 500 ~ 900 ℃, and the time length overall is 1 ~ 3min; In the present embodiment, sintering is divided into oven dry, pre-burning, sintering and cooling four-stage, and wherein sintering stage is warming up to 850 ℃ rapidly from 500 ℃, sharply cools to then below 500 ℃, and the used time of sintering stage is at 12s, and stops 5s at 850 ℃;
Step 32: the heater of putting into the sintering completion, under 280 ℃ condition, leave standstill 25min, take out then and naturally cool to ambient temperature;
Step 33: the assembly behind the natural cooling is carried out deflash handle.
In addition, in step 5,The periphery of module is plated silicon nitride protective layer, and side vapor deposition top electrode obtains finished product.
Embodiment six
The difference of present embodiment and embodiment one is in the step 3 that the selection of relevant parameter is different, and the step 3 of present embodiment comprises following substep:
Step 31: assembly is put into sintering equipment carry out sintering, sintering temperature is 500 ~ 900 ℃, and the time length overall is 1 ~ 3min; In the present embodiment, sintering is divided into oven dry, pre-burning, sintering and cooling four-stage, and wherein sintering stage is warming up to 850 ℃ rapidly from 500 ℃, sharply cools to then below 500 ℃, and the used time of sintering stage is at 10s, and stops 4s at 850 ℃;
Step 32: the heater of putting into the sintering completion, under 300 ℃ condition, leave standstill 20min, take out then and naturally cool to ambient temperature;
Step 33: the assembly behind the natural cooling is carried out deflash handle.
In addition, in the present embodiment, the protective layer of employing is to be coated with one deck silicon nitride earlier, and then is coated with the mode of layer of silicon dioxide, the protection better effects if.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. adopt lay-up method to make the method for high voltage output solar cell, it is characterized in that: said method comprising the steps of:
Step 1: solar battery sheet is cleaned;
Step 2: module output voltage as required; Calculate the good solar battery sheet sheet number that needs; Adopting the solar battery sheet of multi-disc same size in the same way, the mode of lamination overlaps together; The back side of a slice solar battery sheet is provided with conduction adhesion thing towards the front of back a slice solar battery sheet promptly between the adjacent solar battery sheet;
Step 3: adopt technological means to make conduction adhesion thing firmly connect the solar battery sheet of its front and back, carry out Local treatment, obtain the laminated cell chip module;
Step 4: the laminated cell chip module is carried out horizontal resection, obtain to realize the solar cell of high voltage output.
2. employing lay-up method according to claim 1 is made the method for high voltage output solar cell, and it is characterized in that: said method also comprises step 5, and the periphery that is about to module plates protective layer, obtains finished product.
3. employing lay-up method according to claim 1 and 2 is made the method for high voltage output solar cell; It is characterized in that: the conduction adhesion thing described in the said step 2 is an aluminium foil; The dimensions and the solar battery sheet of said aluminium foil are similar; When adopting aluminium foil, the technological means that adopts in the said step 3 may further comprise the steps:
Step 31): assembly is put into heater heat, heating-up temperature is 500 ℃ ~ 1000 ℃, and the time is 10 ~ 30min;
Step 32): but the battery chip module after will heating is put into closed chamber, but slowly extract the air in the closed chamber, make it to form negative pressure, through the air bag of exerting pressure of both sides the head and the tail battery sheet of battery chip module is exerted pressure, make it to realize firm adhesion;
Step 33): the battery chip module after the pressing is put into heater, under 250 ℃ ~ 300 ℃ condition, leave standstill 20 ~ 30min, take out then and naturally cool to ambient temperature;
Local treatment in the said step 3 is because during pressing, aluminium foil solidify to form burr owing to pressure stretches out, so need be with its excision behind the assembly natural cooling.
4. employing lay-up method according to claim 1 and 2 is made the method for high voltage output solar cell; It is characterized in that: the conduction adhesion thing described in the said step 2 is an aluminium paste; Said aluminium paste brush is on the front and/or the back side of solar battery sheet; When adopting aluminium paste, the technological means that adopts in the said step 3 may further comprise the steps:
Step 31): assembly is put into sintering equipment carry out sintering, sintering temperature is 500 ~ 900 ℃, and the time length overall is 1 ~ 3min;
Step 32): the battery chip module that sintering is accomplished is put into heater, under 250 ℃ ~ 300 ℃ condition, leave standstill 20 ~ 30min, take out then and naturally cool to ambient temperature;
Local treatment in the said step 3 is the assembly behind the natural cooling to be carried out deflash handle.
5. employing lay-up method according to claim 2 is made the method for high voltage output solar cell, it is characterized in that: said protective layer adopts individual layer silicon nitride or individual layer silicon dioxide, or both alternately preparations.
6. employing lay-up method according to claim 4 is made the method for high voltage output solar cell; It is characterized in that: in the said step 31; Sintering is divided into oven dry, pre-burning, sintering and cooling four-stage, and wherein sintering stage is warming up to 850 ℃ rapidly from 500 ℃, sharply cools to then below 500 ℃; The used time of sintering stage is at 8-12s, and stops 3～5s at 850 ℃.
7. employing lay-up method according to claim 1 is made the method for high voltage output solar cell, it is characterized in that: the cleaning in the said step 1 is included in to be carried out the manual work cleaning or passes through ultrasonic waves for cleaning under the vacuum condition.
8. employing lay-up method according to claim 1 is made the method for high voltage output solar cell, and it is characterized in that: said solar battery sheet is monocrystalline silicon or polycrystalline silicon solar cell.
9. the method that the folded method layer of employing according to claim 1 is made high voltage output solar cell is characterized in that: in the said step 4, the high voltage solar cell both positive and negative polarity that cutting obtains is in both sides, and thickness is at 200-400 μ m.
10. employing is made high voltage like the described employing lay-up method of the arbitrary claim of claim 1 to 9 and is exported the solar cell that the method for solar cell makes.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107968049A (en) * | 2017-11-24 | 2018-04-27 | 苏州阿特斯阳光电力科技有限公司 | A kind of cutting method of solar battery sheet |
| CN110915002A (en) * | 2018-01-18 | 2020-03-24 | 伟创力有限公司 | Manufacturing method of laminated solar module |
| CN112614796A (en) * | 2020-12-16 | 2021-04-06 | 宣城睿晖宣晟企业管理中心合伙企业(有限合伙) | Battery piece is cutting device in batches |
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| CN107968049A (en) * | 2017-11-24 | 2018-04-27 | 苏州阿特斯阳光电力科技有限公司 | A kind of cutting method of solar battery sheet |
| CN110915002A (en) * | 2018-01-18 | 2020-03-24 | 伟创力有限公司 | Manufacturing method of laminated solar module |
| CN112614796A (en) * | 2020-12-16 | 2021-04-06 | 宣城睿晖宣晟企业管理中心合伙企业(有限合伙) | Battery piece is cutting device in batches |
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| CN102820381B (en) | 2015-03-11 |
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