CN106001962B - A kind of solar battery sheet weld heating and the fixed method and device of welding - Google Patents
A kind of solar battery sheet weld heating and the fixed method and device of welding Download PDFInfo
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- CN106001962B CN106001962B CN201610431856.3A CN201610431856A CN106001962B CN 106001962 B CN106001962 B CN 106001962B CN 201610431856 A CN201610431856 A CN 201610431856A CN 106001962 B CN106001962 B CN 106001962B
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- cell piece
- soldering tip
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0408—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work for planar work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/38—Conductors
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- Optics & Photonics (AREA)
- Photovoltaic Devices (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
A kind of solar battery sheet weld heating and the fixed method and device of welding, are related to solar battery sheet.Device is equipped with welding fixing device and welding of battery film heating device；The welding fixing device is equipped with iron block, briquetting, pressure sensor, infrared sensor and the cell piece carriage for inlaying briquetting；The briquetting is embedded on iron block, and pressure sensor and infrared sensor are set to briquetting lower part, and pressure sensor is used to detect the contact between briquetting and welding for detecting the distance between briquetting and welding, infrared sensor；Welding is set to below briquetting and is laid on the grid line position of cell piece, and cell piece is set on cell piece carriage；The welding of battery film heating device is set there are five electromagnetism soldering tip, and five electromagnetism soldering tips are respectively provided on the iron block that five are inlayed electromagnetism soldering tip, and elevating lever is respectively equipped between five iron blocks and pedestal for inlaying electromagnetism soldering tip.It is easy to operate, reliability is high.
Description
Technical field
The present invention relates to solar battery sheet, it is specifically related to a kind of solar battery sheet weld heating and welding is fixed
Method and device.
Background technology
The whole world faces energy crisis and a large amount of uses of traditional energy cause seriously to pollute to environment, it has also become society and state
The main restricting factor of people's economic development, to realize that sustainable development, national governments are badly in need of readjusting the energy structure, greatly developing can
The renewable sources of energy, therefore solar energy generation technology is by global concern.
The application of solar energy generation technology and solar cell allows the world to see dawn, wherein crystal silicon component is the sun
The process procedure of energy battery development, the generating efficiency of solar cell module will directly determine the quality of component.The defect of component
It is mainly derived from cell piece Series connection welding link, therefore, the compliance rate of component depends primarily on welding and the welding of cell piece is imitated
Fruit.Defect existing for solar battery sheet component mainly have sliver, it is hidden split, rosin joint, snap, cross weld, show money or valuables one carries unintentionally, disconnected grid, short circuit, gas
Bubble, foreign matter and dirty etc.；And most of defect may be from this link of welding other than a small number of defects such as bubble removing.
With the rapid development of the solar energy industry in China, solar battery sheet module production has reached global total amount
70%, major part enterprise of China has used automatic string welding machine in cell piece Series connection welding technique, substantially increases production effect
Rate reduces labour production cost.But existing string welding machine itself designs that there is some shortcomings, usually goes out in welding of battery film
Existing sliver, the hidden exceeded phenomenon of the defects of splitting rate so that component cost is high.
In early days, the developed countries such as America and Europe have dominated automatic string welding machine field, and what is used before China is nearly all Spain
The full-automatic string welding machine of the solar battery sheets such as GAROSABEL string welding machines, Siemens, as China's solar energy industry manufactures skill
The promotion of art, the full-automatic string welding machine of Ningxia calf solar battery sheet, the full-automatic string welding machine of jiangsu wuxi James Ottaway also have
The brand of oneself, and be constantly improved and innovate.
Domestic and international existing string welding machine all respectively has advantage and disadvantage in weld heating mode, but also has most of string welding machine to deposit
Cell piece light decay is easily led in some common faults, such as infrared heating, heating up or cooling down too fast is also easy to produce stress concentration；And at present compared with
The welding fixing device of more string welding machines do it is not in place, such as easily occur pressure it is excessive cause cell piece occur sliver, it is hidden split defect,
Pressure is too small to be led to rosin joint and snaps defect, and range deviation causes to show money or valuables one carries unintentionally, so link easily leads to welding of battery film ratio of defects mistake
Phenomena such as high.
On for above-mentioned weld heating the problem of, worker both domestic and external did some improvement, but deposited
In certain limitation and defect.203556978 U of Chinese patent CN are proposed carries out heating welding using infrared lamp, though
This right device has accomplished that heating is resource integrated, is not necessarily to other heat source, but the cell piece light for not avoiding infrared heating from bringing
The problem of declining, and can not accurately control cell piece in preheating, the temperature in each period such as weld, move back temperature.
In weld heating mode and welding fixing means technique, many improvements have been done by Ningxia calf company, but
Or there are problems that.203062027 U of Chinese patent CN are proposed using electromagnetic induction heating welding manner and ceramics
Pressing consolidates welding, although this is prodigious progress in string welding machine field, consolidating welding using the dead weight of ceramic pressing can lead
It causes cell piece unbalance stress and increases sliver, hidden splits rate.In addition, though the device is also supplemented with using electromagnetic induction heating
Resistance heating source achievees the purpose that cell piece preheating and moves back temperature.
The work that also some other worker is done, such as 203184849 U butt welding stabilization devices with pressure of Chinese patent CN
It is made that some improvement, but can not be to the irrelevance of pressure and welding and cell piece grid line between welding and cell piece
It is accurately controlled, there are certain defects.
Invention content
It is an object of the invention to be directed to the above problem existing for existing bonding machine, a kind of solar battery sheet welding is provided
Heating and welding fixing device.
Another object of the present invention is to provide a kind of solar battery sheet weld heating and welding fixing means.
The solar battery sheet weld heating and welding fixing device are equipped with welding fixing device and welding of battery film adds
Thermal；
The welding fixing device is equipped with iron block, briquetting, pressure sensor, infrared sensor and the cell piece for inlaying briquetting
Carriage；The briquetting is embedded on iron block, and pressure sensor and infrared sensor are set to briquetting lower part, and pressure sensor is used for
The distance between briquetting and welding are detected, infrared sensor is used to detect the contact between briquetting and welding；Welding is set to
Briquetting lower section and the grid line position for being laid on cell piece, cell piece are set on cell piece carriage；
The welding of battery film heating device is set there are five electromagnetism soldering tip, and five electromagnetism soldering tips are respectively provided at five and inlay electricity
On the iron block of magnetic soldering tip, elevating lever is respectively equipped between five iron blocks and pedestal for inlaying electromagnetism soldering tip.
Fine strip shape briquetting can be used in the briquetting.
In welding of battery film heating device, each electromagnetism soldering tip is adjusted at a distance from cell piece by adjusting elevating lever,
And the alternating magnetic field intensity of each electromagnetism soldering tip is adjusted to control temperature of the cell piece in different location, so that cell piece exists
There are suitable temperature difference in 5 positions, achieve the purpose that slowly to move back temperature after cell piece is preheated and welded before welding, to reduce
Cell piece too fast leads to sliver and the hidden quantity split because heating up or cooling down.
In welding fixing device, to avoid electromagnetic induction from generating heat, ceramic material can be used in briquetting.In briquetting lower part
Infrared sensor is equipped with to control the distance between briquetting and welding；And pressure sensor is built-in with to control below briquetting
Contact between briquetting and welding.Pressure sensor and infrared sensor are flushed with briquetting lower surface.It is accurately positioned and essence
True control pressure can substantially reduce this two classes weld defect：Cause cell piece that sliver occurs, hidden splits because pressure is excessive；Pressure is too small
Cause cell piece that rosin joint occurs and snaps.
The solar battery sheet weld heating and welding fixing means, include the following steps：
1) it is 30~50mm, preferably 40mm, the second from left electromagnetism at a distance from cell piece right over it to adjust intermediate electromagnetism soldering tip
Soldering tip is 80~100mm, preferably 90mm at a distance from cell piece right over it, right two electromagnetism soldering tips and cell piece right over it
Distance is 80~100mm, and preferably 90mm, the first from left electromagnetism soldering tip is 140~160mm at a distance from cell piece right over it, preferably
150mm, a right electromagnetism soldering tip are 140~160mm, preferably 150mm at a distance from cell piece right over it；
2) the alternating magnetic field intensity of each electromagnetism soldering tip is adjusted, the temperature of control the first from left electromagnetism soldering tip surface cell piece is 65
~75 DEG C, preferably 70 DEG C, the temperature of cell piece is 135~145 DEG C right over the second from left electromagnetism soldering tip, preferably 140 DEG C, intermediate electromagnetism
The temperature of cell piece is 215~225 DEG C right over soldering tip, and preferably 220 DEG C, two electromagnetism soldering tip surface cell piece of the right side is 135
The temperature of~145 DEG C, preferably 140 DEG C, one electromagnetism soldering tip surface cell piece of the right side is 65~75 DEG C, preferably 70 DEG C；
3) parameter of the infrared sensor and pressure sensor built in below briquetting is adjusted, the height value of infrared sensor is set
Pressure value for 0mm, pressure sensor is set as 0.2 ± 0.01N；
4) when cell piece is transported to the first from left electromagnetism soldering tip position directly above by cell piece carriage, since the first from left magnetic discharge welding is given birth to
The effect of alternating magnetic field, the metal conductor portion of cell piece generates vortex and then generates heat, by adjusting magnetic field intensity cell piece
Temperature control at 65~75 DEG C；When cell piece is transported to the second from left electromagnetism soldering tip position directly above by cell piece carriage, due to
The effect of alternating magnetic field, cell piece generate heat and temperature are controlled at 135~145 DEG C；So far two processes reach cell piece preheating
Purpose, to prevent cell piece, because heating up, too fast appearance is hidden to be split and sliver situation；
5) cell piece is transported to intermediate electromagnetism soldering tip position directly above by cell piece carriage, and welding is laid on cell piece
Corresponding grid line position, due to the effect of alternating magnetic field, cell piece generates heat with welding and temperature is controlled at 215~225 DEG C；Together
When briquetting move down, by control fine strip shape briquetting below built in infrared inductor and pressure sensor, just by welding
Pressure is steady, and last welding and cell piece complete welding at 215~225 DEG C；
6) when cell piece is transported to right two electromagnetism soldering tip position directly above by cell piece carriage, due to the work of alternating magnetic field
With making cell piece generate heat, by adjusting temperature control of the alternating magnetic field intensity cell piece at 135~145 DEG C, cell piece conveys
When cell piece is transported to a right electromagnetism soldering tip position directly above by frame, due to the effect of alternating magnetic field, cell piece fever and temperature
Degree control so far completes cell piece and moves back warm process at 65~75 DEG C, prevent cell piece because move back temperature it is too fast due to occur hidden splitting and splitting
Piece situation.
The sharpest edges of solar battery sheet weld heating and welding fixing device of the present invention be it is easy to operate, can
By property height.Welding of battery film heating device can achieve the purpose that preheat before welding of battery film, slowly move back temperature after welding, while can
Avoid the cell piece light decay defect that the modes such as infrared heating are brought.Welding fixing device uses high-precision control mode, greatly drops
Two big defect incidences when low welding of battery film (cause because pressure is excessive cell piece sliver, it is hidden split phenomenon, pressure is too small to be caused
Rosin joint and snap phenomenon).Therefore the present invention shows tempting foreground, it can be achieved that large-scale promotion and utilization.
The present invention is applied to solar battery sheet string welding machine by improving weld heating mode and welding fixed form
In welding procedure, the weld defect rate of cell piece is reduced, reduces production cost.By a large amount of productive experiment, it is determined that described
The best welding effect and its optimal processing parameter that solar battery sheet weld heating and welding fixing device can reach.This hair
It is bright the weld defect rate of solar battery sheet to be reduced to 0.2% (sliver, hidden split rate control below 0.1%), greatly
Component production cost is reduced greatly, shows wide application prospect.
Description of the drawings
Fig. 1 is the structural schematic diagram of solar battery sheet weld heating and welding fixing device of the present invention.
Fig. 2 looks up for the welding fixing device of solar battery sheet weld heating of the present invention and welding fixing device to be shown
It is intended to.
Fig. 3 shows for the electromagnetic induction soldering tip of solar battery sheet weld heating of the present invention and welding fixing device vertical view
It is intended to.
Specific implementation mode
Referring to Fig. 1~3, the solar battery sheet weld heating and welding fixing device embodiment are equipped with and inlay briquetting
Iron block 1, briquetting 2, pressure sensor 3, infrared sensor 4 and cell piece carriage 7；The briquetting 2 is embedded on iron block 1, pressure
Force snesor 3 and infrared sensor 4 are set to 2 lower part of briquetting, pressure sensor 3 be used to detect between briquetting 2 and welding 5 away from
From infrared sensor 4 is used to detect the contact between briquetting 2 and welding 5；Welding 5 is set to 2 lower section of briquetting and is laid on electricity
The grid line position of pond piece 6, cell piece 6 are set on cell piece carriage 7；
The welding of battery film heating device is set there are five electromagnetism soldering tip 8, and five electromagnetism soldering tips 8 are respectively provided at five and inlay
On the iron block 9 of electromagnetism soldering tip, elevating lever 10 is respectively equipped between five iron blocks 9 for inlaying electromagnetism soldering tip and pedestal 11.
The briquetting 2 uses fine strip shape briquetting.
In welding of battery film heating device, by adjust elevating lever 10 adjust each electromagnetism soldering tip 8 and cell piece away from
From adjusting the alternating magnetic field intensity of each electromagnetism soldering tip in addition to control temperature of the cell piece in different location, so that electricity
Pond piece has suitable temperature difference 5 positions, achievees the purpose that slowly to move back temperature after cell piece is preheated and welded before welding, from
And reduce cell piece too fast leads to sliver and the hidden quantity split because heating up or cooling down.
In welding fixing device, to avoid electromagnetic induction from generating heat, ceramic material can be used in briquetting.In briquetting lower part
Infrared sensor is equipped with to control the distance between briquetting and welding；And pressure sensor is built-in with to control below briquetting
Contact between briquetting and welding.Pressure sensor and infrared sensor are flushed with briquetting lower surface.It is accurately positioned and essence
True control pressure can substantially reduce this two classes weld defect：Cause cell piece that sliver occurs, hidden splits because pressure is excessive；Pressure is too small
Cause cell piece that rosin joint occurs and snaps.
The solar battery sheet weld heating and welding fixing means, include the following steps：
1) it is 30~50mm, preferably 40mm, the second from left electromagnetism at a distance from cell piece right over it to adjust intermediate electromagnetism soldering tip
Soldering tip is 80~100mm, preferably 90mm at a distance from cell piece right over it, right two electromagnetism soldering tips and cell piece right over it
Distance is 80~100mm, and preferably 90mm, the first from left electromagnetism soldering tip is 140~160mm at a distance from cell piece right over it, preferably
150mm, a right electromagnetism soldering tip are 140~160mm, preferably 150mm at a distance from cell piece right over it；
2) the alternating magnetic field intensity of each electromagnetism soldering tip is adjusted, the temperature of control the first from left electromagnetism soldering tip surface cell piece is 65
~75 DEG C, preferably 70 DEG C, the second from left electromagnetism soldering tip surface cell piece is 135~145 DEG C, preferably 140 DEG C, intermediate electromagnetism soldering tip
The temperature of surface cell piece is 215~225 DEG C, and preferably 220 DEG C, two electromagnetism soldering tip surface cell piece of the right side is 135~145
DEG C, preferably 140 DEG C, the temperature of one electromagnetism soldering tip surface cell piece of the right side is 65~75 DEG C, preferably 70 DEG C；
3) parameter of the infrared sensor 4 and pressure sensor 3 built in 2 lower section of briquetting, the parameter of infrared sensor are adjusted
(height value) is set as 0mm, and the parameter (pressure value) of pressure sensor is set as 0.2 ± 0.01N；
4) when cell piece 6 is transported to the first from left electromagnetism soldering tip position directly above by cell piece carriage 7, due to the first from left magnetic discharge welding
The effect of raw alternating magnetic field, the metal conductor portion of cell piece generates vortex and then generates heat, by adjusting magnetic field intensity battery
The temperature of piece is controlled at 65~75 DEG C；When cell piece 6 is transported to the second from left electromagnetism soldering tip position directly above by cell piece carriage 7,
Due to the effect of alternating magnetic field, cell piece fever and temperature control at 135~145 DEG C；So far it is pre- to reach cell piece for two processes
The purpose of heat, to prevent cell piece, because heating up, too fast appearance is hidden to be split and sliver situation；
5) cell piece 6 is transported to intermediate electromagnetism soldering tip position directly above by cell piece carriage 7, and welding is laid on battery
The corresponding grid line position of piece.Due to the effect of alternating magnetic field, cell piece generates heat with welding and temperature is controlled at 215~225 DEG C；
Briquetting 2 moves down simultaneously, by controlling infrared inductor 4 and pressure sensor 3 built in fine strip shape briquetting lower section, just will
Welding pressure is steady, and last welding and cell piece complete welding at 215~225 DEG C.
6) when cell piece 6 is transported to right two electromagnetism soldering tip position directly above by cell piece carriage 7, due to alternating magnetic field
Effect makes cell piece generate heat, and the temperature of cell piece is controlled at 135~145 DEG C by adjusting alternating magnetic field intensity.Cell piece is defeated
When sending frame 7 that cell piece 6 is transported to a right electromagnetism soldering tip position directly above, due to the effect of alternating magnetic field, cell piece fever and
Temperature is controlled at 65~75 DEG C, that so far completes cell piece moves back warm process, prevents hidden split occur due to cell piece is warm too fast because moving back
With sliver situation.
Specific embodiment is given below：
Embodiment 1
1, it is 40mm to adjust at a distance from intermediate electromagnetism soldering tip and cell piece right over it, and adjusts alternating magnetic field intensity and make
The temperature of cell piece is 220 DEG C right over intermediate electromagnetism soldering tip.The second from left electromagnetism soldering tip is at a distance from cell piece right over it
90mm, and adjust alternating magnetic field intensity and so that the temperature of cell piece right over the second from left electromagnetism soldering tip is 140 DEG C.Right two magnetic discharge weldings
Head is 90mm at a distance from cell piece right over it, and adjusts alternating magnetic field intensity and make battery right over two electromagnetism soldering tip of the right side
The temperature of piece is 140 DEG C.The first from left electromagnetism soldering tip is 150mm at a distance from cell piece right over it, and it is strong to adjust alternating magnetic field
Degree is so that cell piece temperature is 70 DEG C right over the first from left electromagnetism soldering tip.It is at a distance from a right electromagnetism soldering tip and its surface cell piece
150mm, and adjust alternating magnetic field intensity and so that cell piece temperature is 70 DEG C right over one electromagnetism soldering tip of the right side.
2, the parameter of the infrared sensor 4 and pressure sensor 3 built in 2 lower section of fine strip shape briquetting, infrared sensor are adjusted
Parameter (height value) be set as 0mm, the parameter (pressure value) of pressure sensor is set as 0.2 ± 0.01N.
3, start automatic string welding machine, defect when to welding of battery film counts, and measures the weld defect rate of cell piece
(sliver hidden splits rate 0.08% for 0.20%；Rosin joint snaps rate 0.10%).
Embodiment 2
Technical process is with embodiment 1, and it is 230 DEG C to adjust cell piece temperature above intermediate electromagnetism soldering tip, the second from left electromagnetism soldering tip
It is 150 DEG C with cell piece temperature above two electromagnetism soldering tip of the right side, cell piece temperature above one electromagnetism soldering tip of the first from left electromagnetism soldering tip and the right side
It is 80 DEG C；The height value of infrared sensor is set as 0mm, and the pressure value of pressure sensor is set as 0.05 ± 0.01N.Cell piece is welded
The ratio of defects connect is counted, and the weld defect rate for measuring cell piece is that 0.42% (sliver hidden splits rate 0.15%；Rosin joint snaps
Rate 0.25%).
Embodiment 3
Technical process is with embodiment 2, and it is 210 DEG C to adjust cell piece temperature above intermediate electromagnetism soldering tip, the second from left electromagnetism soldering tip
It is 130 DEG C with cell piece temperature above two electromagnetism soldering tip of the right side, cell piece temperature above one electromagnetism soldering tip of the first from left electromagnetism soldering tip and the right side
It is 60 DEG C；The height value of infrared sensor is set as 0mm, and the pressure value of pressure sensor is set as 0.35 ± 0.01N.Cell piece is welded
The defect connect is counted, and the weld defect rate for measuring cell piece is that 0.45% (sliver hidden splits rate 0.30%；Rosin joint snaps rate
0.13%).
Embodiment 4
Technical process is with embodiment 3, and it is 230 DEG C to adjust cell piece temperature right over intermediate electromagnetism soldering tip, the second from left magnetic discharge welding
The temperature of cell piece is 130 DEG C right over two electromagnetism soldering tip of head and the right side, electricity right over one electromagnetism soldering tip of the first from left electromagnetism soldering tip and the right side
Pond piece temperature is 30 DEG C.The height value of infrared sensor is set as 0mm, and the pressure value of pressure sensor is set as 0.15 ± 0.01N.It is right
The defect of welding of battery film is counted, and the weld defect rate for measuring cell piece is that 0.55% (sliver hidden splits rate 0.40%；It is empty
It welds, snap rate 0.14%).
Embodiment 5
Technical process is with embodiment 4, and the temperature for adjusting cell piece right over intermediate electromagnetism soldering tip is 210 DEG C, the second from left electromagnetism
The temperature of cell piece is 160 DEG C right over two electromagnetism soldering tip of soldering tip and the right side, right over one electromagnetism soldering tip of the first from left electromagnetism soldering tip and the right side
The temperature of cell piece is 110 DEG C.The height value of infrared sensor is set as 0mm, and the pressure value of pressure sensor is set as 2.5 ±
0.1N.The defect of welding of battery film is counted, the weld defect rate for measuring cell piece is that 0.53% (sliver hidden splits rate
0.38%；Rosin joint snaps rate 0.13%).
Embodiment 6
Technical process is with embodiment 5, and it is 220 DEG C to adjust cell piece temperature right over intermediate electromagnetism soldering tip, the second from left magnetic discharge welding
Cell piece temperature is 140 DEG C right over two electromagnetism soldering tip of head and the right side, battery right over one electromagnetism soldering tip of the first from left electromagnetism soldering tip and the right side
Piece temperature is room temperature (25 DEG C).The height value of infrared sensor is set as 0mm, and the pressure value of pressure sensor is set as 2 ± 0.1N.It is right
The defect of welding of battery film is counted, and the weld defect rate for measuring cell piece is that 0.58% (sliver hidden splits rate 0.45%；It is empty
It welds, snap rate 0.12%).
Embodiment 7
Technical process is with embodiment 6, and it is 220 DEG C to adjust cell piece temperature right over intermediate electromagnetism soldering tip, the second from left magnetic discharge welding
Cell piece temperature is room temperature (25 DEG C), one electromagnetism soldering tip surface of the first from left electromagnetism soldering tip and the right side right over head and right two electromagnetism soldering tip
Cell piece temperature is room temperature (25 DEG C).The height value of infrared sensor is set as 0mm, and the pressure value of pressure sensor is set as 2 ±
0.1N.The defect of welding of battery film is counted, the weld defect rate for measuring cell piece is that 1% (sliver hidden splits rate
0.82%；Rosin joint snaps rate 0.15%).
The weld heating device of the present invention is to carry out heating welding based on electromagnetic induction principle, electric except that can reach welding
Outside the effect of pond piece and welding, cell piece can also be made to preheat before welding, weld after slowly move back temperature, to greatly reduce battery
Piece fragment rate；And heating system integration maintains easily and management and control；This weld heating device can avoid infrared equal heating simultaneously
The cell piece light decay defect that mode is brought.Welding fixing device may be implemented to be accurately positioned and accuracy controlling pressure.The present invention
The best welding effect and its optimal processing parameter that the device can reach is determined.The present invention can be by solar battery sheet
Weld defect rate is reduced to 0.2% (sliver, hidden rate of splitting control below 0.1%).
Claims (5)
1. a kind of solar battery sheet weld heating and welding fixing device, it is characterised in that be equipped with welding fixing device and battery
Piece weld heating device；
The welding fixing device is equipped with the iron block for inlaying briquetting, briquetting, pressure sensor, infrared sensor and cell piece conveying
Frame；The briquetting is embedded on iron block, and pressure sensor and infrared sensor are set to briquetting lower part, and infrared sensor is for detecting
The distance between briquetting and welding, pressure sensor are used to detect the contact between briquetting and welding；Welding is set to briquetting
Lower section and the grid line position for being laid on cell piece, cell piece are set on cell piece carriage；
The welding of battery film heating device is set there are five electromagnetism soldering tip, and five electromagnetism soldering tips are embedded in five iron blocks respectively
On, it inlays and is respectively equipped with elevating lever between the iron block and pedestal of electromagnetism soldering tip.
2. a kind of solar battery sheet weld heating and welding fixing device as described in claim 1, it is characterised in that the pressure
Block uses fine strip shape briquetting.
3. a kind of solar battery sheet weld heating and welding fixing means, it is characterised in that include the following steps：
1) the intermediate electromagnetism soldering tip of adjusting is 30~50mm, the second from left electromagnetism soldering tip and its surface at a distance from cell piece right over it
The distance of cell piece is 80~100mm, and right two electromagnetism soldering tips are 80~100mm, the first from left electricity at a distance from cell piece right over it
Magnetic soldering tip is 140~160mm at a distance from cell piece right over it, and a right electromagnetism soldering tip is at a distance from cell piece right over it
140~160mm；
2) the alternating magnetic field intensity of each electromagnetism soldering tip is adjusted, the temperature of control the first from left electromagnetism soldering tip surface cell piece is 65~75
DEG C, the temperature of cell piece is 135~145 DEG C right over the second from left electromagnetism soldering tip, the temperature of cell piece right over intermediate electromagnetism soldering tip
It it is 215~225 DEG C, cell piece is 135~145 DEG C right over two electromagnetism soldering tip of the right side, cell piece right over one electromagnetism soldering tip of the right side
Temperature be 65~75 DEG C；
3) parameter of the infrared sensor and pressure sensor built in below briquetting is adjusted, the height value of infrared sensor is set as
The pressure value of 0mm, pressure sensor are set as 0.2 ± 0.01N；
4) when cell piece is transported to the first from left electromagnetism soldering tip position directly above by cell piece carriage, since the first from left magnetic discharge welding gives birth to alternation
The effect in magnetic field, the metal conductor portion of cell piece generates vortex and then generates heat, by adjusting temperature of the magnetic field intensity cell piece
Degree control is at 65~75 DEG C；When cell piece is transported to the second from left electromagnetism soldering tip position directly above by cell piece carriage, due to alternation
The effect in magnetic field, cell piece generate heat and temperature are controlled at 135~145 DEG C；So far two processes achieve the purpose that cell piece preheats,
To prevent cell piece, because heating up, too fast appearance is hidden to be split and sliver situation；
5) cell piece is transported to intermediate electromagnetism soldering tip position directly above by cell piece carriage, and to be laid on cell piece corresponding for welding
Grid line position, due to the effect of alternating magnetic field, cell piece generates heat with welding and temperature is controlled at 215~225 DEG C；It presses simultaneously
Block moves down, and by controlling infrared inductor and pressure sensor built in fine strip shape briquetting lower section, just presses welding surely,
Last welding and cell piece complete welding at 215~225 DEG C；
6) when cell piece is transported to right two electromagnetism soldering tip position directly above by cell piece carriage, since the effect of alternating magnetic field makes
Cell piece generates heat, by adjusting alternating magnetic field intensity the control of the temperature of cell piece at 135~145 DEG C, cell piece carriage handle
When cell piece is transported to a right electromagnetism soldering tip position directly above, due to the effect of alternating magnetic field, cell piece fever and temperature control
For system at 65~75 DEG C, that so far completes cell piece moves back warm process.
4. a kind of solar battery sheet weld heating and welding fixing means as claimed in claim 3, it is characterised in that in step
1) in, electromagnetism soldering tip is 40mm, the second from left electromagnetism soldering tip and its surface at a distance from cell piece right over it among the adjusting
The distance of cell piece is 90mm, is 90mm at a distance from right two electromagnetism soldering tips and cell piece right over it, the first from left electromagnetism soldering tip and its
The distance of surface cell piece is 150mm, and a right electromagnetism soldering tip is 150mm at a distance from cell piece right over it.
5. a kind of solar battery sheet weld heating and welding fixing means as claimed in claim 3, it is characterised in that in step
2) in, the temperature of cell piece is 70 DEG C right over control the first from left electromagnetism soldering tip, cell piece right over the second from left electromagnetism soldering tip
Temperature is 140 DEG C, and the temperature of cell piece is 220 DEG C right over intermediate electromagnetism soldering tip, cell piece right over two electromagnetism soldering tip of the right side
It it is 140 DEG C, the temperature of cell piece is 70 DEG C right over one electromagnetism soldering tip of the right side.
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| CN106624237A (en) * | 2016-11-01 | 2017-05-10 | 深圳市鑫明光建筑科技有限公司 | Welding method for IBC efficient single crystal solar cell piece |
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