CN102328143A - Series welding process for cell slices - Google Patents

Series welding process for cell slices Download PDF

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Publication number
CN102328143A
CN102328143A CN201110231081A CN201110231081A CN102328143A CN 102328143 A CN102328143 A CN 102328143A CN 201110231081 A CN201110231081 A CN 201110231081A CN 201110231081 A CN201110231081 A CN 201110231081A CN 102328143 A CN102328143 A CN 102328143A
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China
Prior art keywords
welding
battery sheet
sheet
battery
cell
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Pending
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CN201110231081A
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Chinese (zh)
Inventor
杜晓虹
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Wuxi Shangpin Solar Energy Science & Technology Co Ltd
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Wuxi Shangpin Solar Energy Science & Technology Co Ltd
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Priority to CN201110231081A priority Critical patent/CN102328143A/en
Publication of CN102328143A publication Critical patent/CN102328143A/en
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  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a series welding process for cell slices, which comprises the following process steps of: taking the cell slices from a transfer box, placing the cell slices at corresponding positions of a welding formwork in a mode that anodes of the cell slices are upwards, and ensuring the side of polycrystalline silicon, which is provided with a transverse line mark, close to a formwork positioning strip so as to be aligned with a main grid line; aligning bus bars with a back electrode and uniformly falling the bus bars in the back electrode; after aligning, pressing the bus bars and the cell slices to avoid relative displacement; making a transfer list record of the qualified cell slices, placing the cell slices into a transfer formwork by the welding formwork and paying attention to that cell strings can be pushed and taken before the cell slices are placed in the transfer formwork and meanwhile, the cell strings are isolated by thin films when the cell slices are placed in the transfer formwork so as to prevent fragments and the cell strings from being bent; and placing the transfer formwork in which the cell strings are placed into a temporary storage rack. In the invention, the bus bars can be well contacted with cells after a soldering iron passes through the bus bars, the stress generated in the welding process is small, and the fragment rate is reduced; and a laminating laying process is simplified and the rework which is generated when redundant bus bars are cut away is avoided.

Description

The series welding welding procedure of battery sheet
Technical field
The present invention relates to the series welding welding procedure of battery sheet, belong to the solar components welding technology field.
Background technology
Series welding: back side welding be with NOpen the sheet battery strings and be connected together and form a component string, a film tool plate is mainly leaned in the location of battery, and the operator uses electric iron and the front electrode (negative pole) of solder stick with monolithic welding battery well to be welded to "The back battery "Backplate (positive pole) on, so successively will NOpen that sheet is serially connected and weld out lead-in wire at the both positive and negative polarity of component string.
Summary of the invention
The object of the present invention is to provide a kind of series welding welding procedure of battery sheet, during manual welding, the band that confluxes after flatiron is passed by, understands well and battery contacts, and the stress that produces in the welding process is very little, reduces fragment rate; Technology for lamination lays is oversimplified, and has stopped to be with doing over again of causing because of cutting unnecessary confluxing.
According to technical scheme provided by the invention, a kind of series welding welding procedure of battery sheet comprises following processing step:
1, the preparation of material: battery sheet (head) 125 х 125 mm (6); Battery sheet (tail) 125 х 125 mm (6); Battery sheet (health) 125 х 125 mm (60);
(1), the welding before, the electric iron temperature is 375 ℃ ± 10 ℃, temperature of heating plate is 40 ℃ ± 2 ℃, the welding region temperature is controlled at 25 ℃ ± 2 ℃, humidity prevents the influence of temperature change welding quality 50% ± 5%;
(2), the battery sheet that newly arrives must test weld, also answer test weld before the formal welding every day, the inspection welding quality, whether observe flatiron temperature and speed of welding suitable.
2, power taking pond sheet in the circulation box notes that sealing-off or fragmentation are arranged, and carries out repair welding and changes sheet by flow process; Distinguish end to end; Battery sheet anodal (reverse side) is upwards put into welding template relevant position, and polysilicon has one side of horizontal line mark near the Template Location bar, so that alignment battery sheet main grid line;
3, make the lower left corner of battery sheet be close to the series welding template, to be scribed ss with reference to not having the principle fine setting of evenness according to taking into account base linearity and adjacent cell sheet spacing, the band that confluxes aligns with back electrode and evenly drops in the back electrode; Battery sheet spacing is controlled at: 2 ± 0.5mm;
4, align the back and gently push down to conflux with a hand finger and be with and the battery sheet, avoid relative displacement, the another hand with electric iron apart from battery sheet edge 5-10mm.(noticing that anti-heap tin destroys the battery sheet, can melt tin earlier gently) welds downwards with the speed of uniform and stable, guarantees the positive and negative light; In the weldingThe electric iron temperature is 375 ℃ ± 10 ℃, and temperature of heating plate is 40 ℃ ± 2 ℃;
5, range estimation self check, off quality does over again.Use scaling powder during if do over again, should in time use alcohol wash;
6, up-to-standardly perform the circulation unirecord, put into the switching template, note putting into to push away before the switching template and get battery strings, isolate to prevent that fragment and battery strings from becoming with film between string and string when putting into simultaneously and bend with the welding template;
7, the switching template of putting battery strings well is put into pallet;
As further improvement of the present invention, during the welding of the series welding of said battery sheet, each crosstalk pond sheet main grid line point-blank deviation can not surpass 1mm.
As further improvement of the present invention, said interconnector is welded in the main grid line even, straightly, and the base of each single each battery sheet of string is on same straight line, and < 0.5mm misplaces.
Compared with present technology the present invention has the following advantages:
During manual welding of the present invention, tin-coated welding strip can well contact with battery after flatiron is passed by, and the stress that produces in the welding process is very little, the reduction fragment rate; The technology of laying for lamination is oversimplified, and has stopped because of cutting doing over again that unnecessary tin-coated welding strip causes; Can satisfy welding size, resistivity, tensile strength, be coated with tin rate etc.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Following the present invention will combine the embodiment in the accompanying drawing to further describe:
Embodiment 1:
A kind of series welding welding procedure of battery sheet comprises following processing step:
1, the preparation of material: 1: 125 х 125 mm (6) (three grid lines) of battery sheet (head); 2: 125 х 125 mm (6) (three grid lines) of battery sheet (tail); 3: 125 х 125 mm (60) (three grid lines) of battery sheet (health);
(1), the welding before, the electric iron temperature is 385 ℃, temperature of heating plate is 42 ℃, the welding region temperature is controlled at 27 ℃, humidity prevents the influence of temperature change welding quality 55%;
(2), the battery sheet that newly arrives must test weld, also answer test weld before the formal welding every day, the inspection welding quality, whether observe flatiron temperature and speed of welding suitable.
2, power taking pond sheet in the circulation box notes that sealing-off or fragmentation are arranged, and carries out repair welding and changes sheet by flow process; Distinguish end to end; Battery sheet anodal (reverse side) is upwards put into welding template relevant position, and polysilicon has one side of horizontal line mark near the Template Location bar, so that alignment battery sheet main grid line;
3, make the lower left corner of battery sheet be close to the series welding template, to be scribed ss with reference to not having the principle fine setting of evenness according to taking into account base linearity and adjacent cell sheet spacing, the band that confluxes aligns with back electrode and evenly drops in the back electrode; Battery sheet spacing is controlled at: 2.5mm.
4, align the back and gently push down to conflux with a hand finger and be with and the battery sheet, avoid relative displacement, the another hand with electric iron apart from battery sheet edge 10mm.(noticing that anti-heap tin destroys the battery sheet, can melt tin earlier gently) welds downwards with the speed of uniform and stable, guarantees the positive and negative light; In the weldingThe electric iron temperature is 385 ℃, and temperature of heating plate is 42 ℃.
5, range estimation self check, off quality does over again.Use Korean and Japanese scaling powder during if do over again, should in time use the general industry alcohol wash;
6, up-to-standardly perform the circulation unirecord, put into the switching template, note putting into to push away before the switching template and get battery strings, isolate to prevent that fragment and battery strings from becoming with film between string and string when putting into simultaneously and bend with the welding template;
7, the switching template of putting battery strings well is put into pallet.
Examine content mutually:
The vestiges whether the battery sheet has scaling powder have been welded in 1 inspection.
Whether confluxed in the band position in 2 inspections should smooth, bright and clean, tin sweat(ing) or burr.
Whether rosin joint of battery sheet has been welded in 3 inspections.
4 inspections are confluxed and are with the main grid line that whether departs from the battery sheet.
The self check content:
Whether the battery strings that 1 inspection has been gone here and there has sliver, unfilled corner, scolding tin slag and other foreign matters.
Whether the sheet spacing of 2 inspection battery strings is accurate, consistent.
Whether 3 inspections have rosin joint, leak weldering, short circuit, battery sheet quantity (lacking one or many one).
Whether the both positive and negative polarity of 4 battery sheets welds correctly.
5 conflux is with the main grid line that whether departs from the battery sheet.
6 each crosstalk pond sheet main grid line point-blank deviation can not surpass 1mm.
Quality requirement:
1) face of weld light, no tin sweat(ing) and burr.
2) band that confluxes is welded in the main grid line even, straightly, the base of each single each battery sheet of string on same straight line, dislocation < 0.5mm.
3) no sealing-off, rosin joint and weldering excessively guarantee good electrical properties.
4) have certain mechanical strength, gently draw the band that confluxes not come off along the 45o direction.
5) the negative pole face of weld still keeps light.
6) battery sheet cleaning surfaces, monolithic is complete, does not have cracked phenomenon.
Points for attention:
1 ignores the pitch problems of battery sheet, causes battery strings not straight, has influenced the quality of lamination. influenced the component insulation performance behind the lamination.
2 ignore the smooth of solder horn and cleaning, and it is rough to cause welding the belt surface that confluxes, and is easy to generate the scolding tin slag.
3 ignore weld interval, the too short rosin joint that possibly cause the battery sheet of time, and overlong time possibly cause break (the crossing weldering) of the main grid line of battery sheet.
4 ignore welding temperature, and temperature is crossed the low rosin joint that possibly cause the battery sheet, the too high sliver that possibly cause the battery sheet of temperature.
5The rosin joint of ignoring the battery sheet connects, and causes in the future that resistance increases in the assembly, the scrapping of possible assembly.
Embodiment 2:
A kind of series welding welding procedure of battery sheet comprises following processing step:
1, the preparation of material: battery sheet (head) 1:125 х 125 mm (6) (two grid lines); 3: 125 х 125 mm (6) (two grid lines) of battery sheet (tail); 2: 125 х 125 mm (60) (two grid lines) of battery sheet (health);
(1), the welding before, the electric iron temperature is 375 ℃, temperature of heating plate is 40 ℃, the welding region temperature is controlled at 25 ℃, humidity prevents the influence of temperature change welding quality 50%;
(2), the battery sheet that newly arrives must test weld, also answer test weld before the formal welding every day, the inspection welding quality, whether observe flatiron temperature and speed of welding suitable.
2, power taking pond sheet in the circulation box notes that sealing-off or fragmentation are arranged, and carries out repair welding and changes sheet by flow process; Distinguish end to end; Battery sheet anodal (reverse side) is upwards put into welding template relevant position, and polysilicon has one side of horizontal line mark near the Template Location bar, so that alignment battery sheet main grid line;
3, make the lower left corner of battery sheet be close to the series welding template, to be scribed ss with reference to not having the principle fine setting of evenness according to taking into account base linearity and adjacent cell sheet spacing, the band that confluxes aligns with back electrode and evenly drops in the back electrode; Battery sheet spacing is controlled at: 2mm.
4, align the back and gently push down to conflux with a hand finger and be with and the battery sheet, avoid relative displacement, the another hand with electric iron apart from battery sheet edge 7.5mm.(noticing that anti-heap tin destroys the battery sheet, can melt tin earlier gently) welds downwards with the speed of uniform and stable, guarantees the positive and negative light; The electric iron temperature is 375 ℃ in the welding, and temperature of heating plate is 40 ℃.
5, range estimation self check, off quality does over again.Use Korean and Japanese scaling powder during if do over again, should in time use the general industry alcohol wash;
6, up-to-standardly perform the circulation unirecord, put into the switching template, note putting into to push away before the switching template and get battery strings, isolate to prevent that fragment and battery strings from becoming with film between string and string when putting into simultaneously and bend with the welding template;
7, the switching template of putting battery strings well is put into pallet.
Embodiment 3:
A kind of series welding welding procedure of battery sheet comprises following processing step:
1, the preparation of material: 1: 125 х 125 mm (6) (three grid lines) of battery sheet (head); 3: 125 х 125 mm (6) (three grid lines) of battery sheet (tail); 2: 125 х 125 mm (60) (three grid lines) of battery sheet (health);
(1), the welding before, the electric iron temperature is 365 ℃, temperature of heating plate is 38 ℃, the welding region temperature is controlled at 23 ℃, humidity prevents the influence of temperature change welding quality 45%;
(2), the battery sheet that newly arrives must test weld, also answer test weld before the formal welding every day, the inspection welding quality, whether observe flatiron temperature and speed of welding suitable.
2, power taking pond sheet in the circulation box notes that sealing-off or fragmentation are arranged, and carries out repair welding and changes sheet by flow process; Distinguish end to end; Battery sheet anodal (reverse side) is upwards put into welding template relevant position, and polysilicon has one side of horizontal line mark near the Template Location bar, so that alignment battery sheet main grid line;
3, make the lower left corner of battery sheet be close to the series welding template, to be scribed ss with reference to not having the principle fine setting of evenness according to taking into account base linearity and adjacent cell sheet spacing, the band that confluxes aligns with back electrode and evenly drops in the back electrode; Battery sheet spacing is controlled at: 1.5mm.
4, align the back and gently push down to conflux with a hand finger and be with and the battery sheet, avoid relative displacement, the another hand with electric iron apart from battery sheet edge 5mm.(noticing that anti-heap tin destroys the battery sheet, can melt tin earlier gently) welds downwards with the speed of uniform and stable, guarantees the positive and negative light; The electric iron temperature is 365 ℃ in the welding, and temperature of heating plate is 38 ℃.
5, range estimation self check, off quality does over again.Use Korean and Japanese scaling powder during if do over again, should in time use the general industry alcohol wash;
6, up-to-standardly perform the circulation unirecord, put into the switching template, note putting into to push away before the switching template and get battery strings, isolate to prevent that fragment and battery strings from becoming with film between string and string when putting into simultaneously and bend with the welding template;
7, the switching template of putting battery strings well is put into pallet.

Claims (3)

1. the series welding welding procedure of a battery sheet is characterized in that: adopt following processing step:
(1), the welding before, the electric iron temperature is 375 ℃ ± 10 ℃, temperature of heating plate is 40 ℃ ± 2 ℃, the welding region temperature is controlled at 25 ℃ ± 2 ℃, humidity is 50% ± 5%;
(2), in the circulation box power taking pond sheet, note that sealing-off or fragmentation are arranged, carry out repair welding and change sheet by flow process; Distinguish end to end; Battery sheet positive pole is upwards put into welding template relevant position, and polysilicon has one side of horizontal line mark near the Template Location bar, so that alignment battery sheet main grid line;
(3), make the lower left corner of battery sheet be close to the series welding template, to be scribed ss with reference to not having the principle fine setting of evenness according to taking into account base linearity and adjacent cell sheet spacing, conflux band and back electrode align and evenly drop in the back electrode; Battery sheet spacing is controlled at: 2 ± 0.5mm;
(4), push down conflux band and battery sheet after aligning, avoid relative displacement, electric iron is apart from battery sheet edge 5-10mm; In the weldingThe electric iron temperature is 375 ℃ ± 10 ℃, and temperature of heating plate is 40 ℃ ± 2 ℃;
(5), the range estimation self check, off quality does over again, if use scaling powder when doing over again, should in time use alcohol wash;
(6), up-to-standard perform the circulation unirecord, put into the switching template with the welding template, note putting into should pushing away before the switching template and get battery strings, isolate to prevent that fragment and battery strings from becoming with film between string and string when putting into simultaneously and bend;
(7), the switching template of putting battery strings well is put into pallet.
2. the series welding welding procedure of battery sheet as claimed in claim 1 is characterized in that: when the series welding of said battery sheet welded, each crosstalk pond sheet main grid line point-blank deviation can not surpass 1mm.
3. the series welding welding procedure of battery sheet as claimed in claim 1 is characterized in that: the said band that confluxes is welded in the main grid line even, straightly, and the base of each single each battery sheet of string is on same straight line, and < 0.5mm misplaces.
CN201110231081A 2011-08-12 2011-08-12 Series welding process for cell slices Pending CN102328143A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103801785A (en) * 2012-11-10 2014-05-21 宁夏小牛自动化设备有限公司 Full-automatic series welding equipment capable of welding four-grid line and five-grid line solar battery pieces
CN104148758A (en) * 2014-08-14 2014-11-19 无锡尚品太阳能电力科技有限公司 Single-soldering process for silver-bearing thickened solder strip and battery piece
CN106112190A (en) * 2016-07-21 2016-11-16 河北羿珩科技股份有限公司 Solar energy convergent belt bonding machine modular system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101502902A (en) * 2009-03-04 2009-08-12 无锡尚德太阳能电力有限公司 Solar battery welding device and welding process
CN101567402A (en) * 2009-05-26 2009-10-28 浙江恒基光伏电力科技股份有限公司 Solar photovoltaic component and welding process
CN201369337Y (en) * 2009-03-20 2009-12-23 常州天华新能源科技有限公司 Series welding template for solar cells
CN201371298Y (en) * 2009-03-24 2009-12-30 常州天华新能源科技有限公司 Solar component series welding table
WO2010022977A2 (en) * 2008-08-29 2010-03-04 Schmid Technology Systems Gmbh Method for soldering contact wires to solar cells
CN102059441A (en) * 2010-11-23 2011-05-18 常州尖能光伏科技有限公司 High-frequency current direct heating soldering method for crystalline silicon solar cell

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010022977A2 (en) * 2008-08-29 2010-03-04 Schmid Technology Systems Gmbh Method for soldering contact wires to solar cells
CN101502902A (en) * 2009-03-04 2009-08-12 无锡尚德太阳能电力有限公司 Solar battery welding device and welding process
CN201369337Y (en) * 2009-03-20 2009-12-23 常州天华新能源科技有限公司 Series welding template for solar cells
CN201371298Y (en) * 2009-03-24 2009-12-30 常州天华新能源科技有限公司 Solar component series welding table
CN101567402A (en) * 2009-05-26 2009-10-28 浙江恒基光伏电力科技股份有限公司 Solar photovoltaic component and welding process
CN102059441A (en) * 2010-11-23 2011-05-18 常州尖能光伏科技有限公司 High-frequency current direct heating soldering method for crystalline silicon solar cell

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103801785A (en) * 2012-11-10 2014-05-21 宁夏小牛自动化设备有限公司 Full-automatic series welding equipment capable of welding four-grid line and five-grid line solar battery pieces
CN103801785B (en) * 2012-11-10 2016-09-07 宁夏小牛自动化设备有限公司 Solderable four grid lines, the full-automatic series welding device of five grid line solar battery sheets
CN104148758A (en) * 2014-08-14 2014-11-19 无锡尚品太阳能电力科技有限公司 Single-soldering process for silver-bearing thickened solder strip and battery piece
CN106112190A (en) * 2016-07-21 2016-11-16 河北羿珩科技股份有限公司 Solar energy convergent belt bonding machine modular system

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Effective date of abandoning: 20120125