CN108838507A - A kind of welding method of busbar - Google Patents
A kind of welding method of busbar Download PDFInfo
- Publication number
- CN108838507A CN108838507A CN201810689200.0A CN201810689200A CN108838507A CN 108838507 A CN108838507 A CN 108838507A CN 201810689200 A CN201810689200 A CN 201810689200A CN 108838507 A CN108838507 A CN 108838507A
- Authority
- CN
- China
- Prior art keywords
- welding
- cell piece
- pedestal
- busbar
- welding method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 194
- 238000000034 method Methods 0.000 title claims abstract description 55
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 27
- 238000005219 brazing Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 230000002950 deficient Effects 0.000 abstract description 4
- 210000004027 cell Anatomy 0.000 description 72
- 239000000047 product Substances 0.000 description 18
- 230000008569 process Effects 0.000 description 17
- 229910052750 molybdenum Inorganic materials 0.000 description 9
- 239000011733 molybdenum Substances 0.000 description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 8
- 230000012010 growth Effects 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000009514 concussion Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 208000032953 Device battery issue Diseases 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000021615 conjugation Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of welding methods of busbar, including：Cell piece is fixed on the welding pedestal of ultrasonic brazing unit, welding is placed on cell piece；Welding pedestal is heated, welding pedestal conducts heat to cell piece, welds together cell piece and welding using ultrasonic brazing unit, forms intermetallic compounds layer between cell piece and welding.Welding method disclosed by the invention can solve intermetallic compounds layer grew it is slow and in uneven thickness caused by the problem of pulling force unevenness improve the reliability of product so that the product after welding meets the correct tension index of battery, reduce the fraction defective of product.
Description
Technical field
It can be applied in solar panel converge the present invention relates to photovoltaic cell component production field more particularly to one kind
The welding method of welding sequence.
Background technique
In solar cells, monomer solar battery cannot directly do power supply use, and have to several single batteries
It is connected in series or in parallel and is packaged into component.From solar battery sheet to battery component, need to connect on the battery of monolithic
An entirety is made, welding is exactly critical process therein.Now widely used welding method is ultrasonic bonding, with
Welding is welded on cell piece.By taking aluminium strip welds as an example, the main body of cell piece is a glass substrate, is coated on the glass substrate
Conductive membrane layer, such as molybdenum film.The basic principle of this welding procedure is so that plumb joint makes under ultrasonic energy effect
Aluminium strip and semi-finished product CIGS (the chalcopyrite crystalline membrane solar battery of optimal proportion is made of tetra- kinds of elements of Cu, In, Ga, Se)
Intermetallic compound (IMC, Intermetallic Compound) layer is formed between glass molybdenum layer.But this supersonic welding
Technique is connect at least to have the following disadvantages：
1, intermetallic compound growth is excessively slow, be easy to cause the uneven thickness of intermetallic compound, in turn results in battery
Larry is uneven in the pull test of failure analysis, can not meet the correct tension index of battery, and product reliability is poor, and fraction defective is high
The problem of；
2, incorporation oxygen is easy in welding and conductive membrane layer cohesive process and aoxidized, lead to the two conjugation
Difference, it is also possible to the problem of the product reliability difference after having made Product jointing not or welding；
3, prior art cannot achieve automatic welding, and welding efficiency is low, and product defect rate is high, and welding cost is high.
Above-described one or more problem needs to improve.
Summary of the invention
In view of the above problem of the existing technology, a kind of weldering for being designed to provide busbar of an aspect of of the present present invention
Method is connect, this method can to form one layer of uniform intermetallic compounds layer between welding and cell piece, effectively be promoted and be produced
Product reliability.
To achieve the goals above, the present invention provides a kind of welding methods of busbar, including：
Cell piece is fixed on the welding pedestal of ultrasonic brazing unit, welding is placed on cell piece；To welding
Pedestal is heated, and welding pedestal conducts heat to cell piece；Cell piece and welding are welded using ultrasonic brazing unit
Together, intermetallic compounds layer is formed between cell piece and welding, is solved intermetallic compounds layer and was grown slow and thickness
The problem of pulling force unevenness caused by uneven improves product so that the product after welding meets the correct tension index of battery
Reliability, reduce the fraction defective of product.
In some embodiments, cell piece is fixed on welding pedestal and includes：Device is formed in cell piece using negative pressure
Negative pressure is generated between welding pedestal, cell piece is adsorbed on welding pedestal.
In some embodiments, it includes vacuum generator that negative pressure, which forms device,；Weld the side that cell piece is carried on pedestal
It is provided with the heat block that can conduct heat, heat block offers several close to the side of cell piece and is connected with vacuum generator
Logical vacuum hole, and the open end of vacuum hole is directed at cell piece.
In some embodiments, before being heated to welding pedestal, further include：Weldering between cell piece and welding
It connects and is passed through protective gas at contact surface, protective gas is introduced into the gap between cell piece and welding.
In some embodiments, protective gas is one of carbon dioxide, argon gas, helium and nitrogen or at least two
Mixed gas.
In some embodiments, carrying out heating to welding pedestal includes：The temperature of detection welding pedestal, is welded when detecting
When the temperature of pedestal is lower than welding temperature preset value, heating device is opened.
In some embodiments, welding temperature preset value is 200 DEG C -400 DEG C.
In some embodiments, in welding, ultrasonic brazing unit includes ultrasonic transducer, ultrasonic transducer
Frequency is 20kHz-200kHz, and the power of ultrasonic transducer is 10-150w.
In some embodiments, ultrasonic brazing unit includes plumb joint, and plumb joint is 20- to the pressure that welding pressurizes
100N, the duration of pressurization are 10-50ms.
In some embodiments, before cell piece is fixed on welding pedestal, further include：By transmission mechanism by battery
Piece is sent to welding region.
Compared with prior art, a kind of welding method this method of busbar provided by the invention can make welding and
One layer of uniform intermetallic compounds layer is formed between cell piece, is solved intermetallic compounds layer and was grown slow and uneven thickness
The problem of the unevenness of pulling force caused by even, so that the product after welding meets the correct tension index of battery, improve product can
By property, the fraction defective of product is reduced.
It should be appreciated that foregoing general description and it is described in detail below be merely exemplary with it is illustrative, rather than use
In the limitation disclosure.
Present specification provides the various realizations or exemplary general introduction of technology described in the disclosure, is not disclosed skill
The comprehensive disclosure of the full scope of art or all features.
Detailed description of the invention
Fig. 1 is that cell piece is fixed on weldering when the application busbar welding system of one embodiment of the present invention welds busbar
Connect the status diagram on pedestal；
Fig. 2 is the structural schematic diagram of the busbar welding system of one embodiment of the present invention；
Fig. 3 is the cell piece that conveying comes when welding busbar using busbar welding system of one embodiment of the present invention
The status diagram being attracted on heat block；
Fig. 4 is the flow diagram of the welding method of the busbar of one embodiment of the present invention.
Appended drawing reference：
1- pressurizing device；2- plumb joint；3- ultrasonic transducer；4- protects air lift for device；
10- cell piece；20- welding；30- molybdenum layer；40- transport mechanism；50- intermetallic compounds layer；
100- heating device；101- welds pedestal；102- heat block；103- vacuum generator；104- heating element；
1021- vacuum hole.
Specific embodiment
In order to enable the purposes, technical schemes and advantages of the embodiment of the present disclosure are clearer, below in conjunction with disclosure reality
The technical solution of the embodiment of the present disclosure is clearly and completely described in the attached drawing for applying example.Obviously, described embodiment is
A part of this disclosure embodiment, instead of all the embodiments.Based on described embodiment of the disclosure, this field is common
Technical staff's every other embodiment obtained under the premise of being not necessarily to creative work, belongs to the model of disclosure protection
It encloses.
Unless otherwise defined, the technical term or scientific term that the disclosure uses should be tool in disclosure fields
The ordinary meaning for thering is the personage of general technical ability to be understood.The similar word meaning such as " comprising " or "comprising" used in the disclosure
Point out that element or object before the existing word are covered the element for appearing in the word presented hereinafter or object and its be equal, without
Exclude other elements or object." connection " either the similar word such as " connected " is not limited to physics or mechanical company
It connects, can also include electrical connection, it is either direct or indirect."upper", "lower", "left", "right" etc. are only used for table
Show relative positional relationship, after the absolute position for being described object changes, then the relative positional relationship may also correspondingly change.
In order to keep the following explanation of the embodiment of the present disclosure to understand and concise, known function and known portion is omitted in the disclosure
The detailed description of part.
In current solar cell module in the ultrasonic welding process of busbar, since intermetallic compounds layer is raw
It grew slow, it is thus possible to cause the problem of pulling force unevenness.For this purpose, in the present invention, providing a kind of weldering of improved busbar
Method is connect, while additionally providing the welding system of the welding method applied to busbar in the present invention.
Firstly, please referring to description of the invention attached drawing 2 and attached drawing 3, in the present embodiment, provide a kind of applied to confluence
The specific structure of the welding system of the welding method of item, wherein welding system includes ultrasonic brazing unit and heating device, is surpassed
Sound wave welder can carry out ultrasonic welding to cell piece 10 and welding 20, so that cell piece 10 and welding 20 are welded on one
It rises, specifically, ultrasonic brazing unit includes plumb joint 2 and welding pedestal 101, and welding pedestal 101 is located at 2 lower section of plumb joint,
For carrying and fixing cell piece 10.
Fig. 1 shows the state that cell piece when welding busbar using busbar welding system is fixed on welding pedestal and shows
It is intended to, in carrying out ultrasonic welding process, heating device 100 is used for the cell piece for carrying and being fixed on welding pedestal 101
10 are heated.Specifically, heating device 100 includes heating element 104, and welding bottom is embeddedly arranged in heating element 104
In seat 101, for heating to can carry and fix the welding pedestal 101 of cell piece 10.Preferably, heating element 104
It can be realized by way of the heating rod being threaded through in welding pedestal 101, save installation space, and at low cost.In welding procedure
In the process, the controlled generation heat of heating rod, heat are then conducted to welding pedestal 101, to add to welding pedestal 101
Heat.
Since in the whole welding process, cell piece 10 is remained on welding pedestal 101, thus is utilizing ultrasound
Wave soldering connection device is to ultrasonic welding is carried out between cell piece 10 and welding 20 when, welding pedestal 101 is continuously obtained heating, so as to
Enough growths for accelerating intermetallic compounds layer 50 between cell piece 10 and welding 20.For example, when passing through ultrasonic brazing unit
When welding to cell piece 10 and welding 20, the surface of cell piece 10 is coated with molybdenum layer 30, and welding 20 can choose aluminium strip, into
In row ultrasonic welding process, intermetallic compounds layer actually is formed between the molybdenum layer 30 on cell piece 10 and welding 20
50.It is merely illustrative it will be appreciated by those skilled in the art that forming intermetallic compounds layer 50 between welding 20 and molybdenum layer 30
Bright, molybdenum layer 30 still has other replacements possible as film conductive layer, for example, ITO (three indium oxide of tin dope), AZO (aluminium doping
Zinc oxide) etc., and aluminium strip can also replace with copper strips, silver band or aerdentalloy material etc. as needed.In this course,
It as the heat source of heating rod itself, can be provided by other calandrias, Electric heating reality can also be passed through by heating rod itself
It is existing.
Furthermore in some embodiments, it should be understood that for the ease of the temperature control in technical process, preferably, plus
Thermal 100 can also further comprise：Temperature sensor (not shown in figure 1) and control mechanism (not shown in figure 1), wherein
Temperature sensor is configured to the temperature of real-time detection welding pedestal 101 and the temperature value that will test feeds back to control mechanism progress temperature
Degree control, the temperature value control heating element 104 for the welding pedestal 101 that control mechanism is used to be detected according to temperature sensor open
It closes.During carrying out computer heating control by control mechanism, heating element 104 is configured to the detection temperature when welding pedestal 101
When degree is lower than welding temperature preset value, it is powered and starts and continuous uniform heating is carried out to welding pedestal 101, heat will finally pass through
Welding pedestal 101 is conducted to cell piece 10, so that the temperature of cell piece 10 increases, to accelerate intermetallic when welding
The formation of nitride layer.In this way, by welding system introduce temperature control so that cell piece 10 be able to maintain certain temperature it
On, the growth of intermetallic compound can be effectively facilitated, solve since intermetallic compound growth is excessively slow and uneven thickness and
Caused by pulling force is uneven in the pull test analyzed of battery failure, the problem of can not meet the correct tension index of battery, promoted
The stability of technique and the reliability of product, reduce product defect rate, to reduce welding cost.As further excellent
Choosing, welding temperature preset value are normally controlled in 200 DEG C of -400 DEG C of ranges.
As shown in Fig. 2, ultrasonic brazing unit further includes ultrasonic transducer 3, ultrasonic transducer 3 is located at plumb joint 2
Side drive plumb joint 2 to generate along welding 20 for generating ultrasonic energy, and by transfer of ultrasonic energy to plumb joint 2
Concussion on extension direction.Energy during concussion can promote film conductive layer (such as the molybdenum on welding 20 and cell piece 10
Layer 30) between generate intermetallic compound, form intermetallic compounds layer 50.But this concussion process, which is equally possible, leads to electricity
Connection reliability between pond piece 10 and welding 20 reduces.Therefore, in the technical solution of the present invention, the needs of cell piece 10 are fixed
It is maintained on welding pedestal 101.It will be appreciated by those skilled in the art that this purpose can by mechanical structure realize clamping,
Limit and/or fixed form are realized.
In order to enable cell piece 10 can be heated well while fixing on welding pedestal 101, in some implementations
In example, preferably, the side for carrying cell piece 10 on welding pedestal 101 is provided with heat block 102, heat block 102 is carried
And fixed cell piece 10, while the heat that the welding transmitting of pedestal 101 comes can be absorbed, and by even heat pass to cell piece
10, to realize the purpose heated to cell piece 10, to promote the reliability of product.
In some embodiments, cell piece 10 can be absorbed and fixed on welding pedestal 101 by way of negative-pressure adsorption
On the heat block 102 of side.Welding system provided in an embodiment of the present invention further includes that negative pressure forms device, for example, by using such as Fig. 1
Vacuum generator 103.In the embodiment using vacuum generator 103, heat block 102 is opened up close to the side of cell piece 10
The vacuum hole 1021 for thering are several to be connected with vacuum generator 103, and the open end of vacuum hole 1021 is directed at cell piece 10, leads to
It crosses vacuum generator 103 and forms negative pressure at vacuum hole 1021, so as to which cell piece 10 to be adsorbed on heat block 102.
In addition, plumb joint 2 is pressed on welding 20 with certain pressure during implementing the welding method of busbar
It can help to generate intermetallic compounds layer 50 between welding 20 and cell piece 10.Therefore, preferably, ultrasonic brazing unit
It further include pressurizing device 1, pressurizing device 1 is supported by plumb joint 2 and can be independently relative to plumb joint 2 and acted, and pushes plumb joint 2
It is mobile, and to the cell piece 10 and the application pressure of welding 20 when welding on welding pedestal 101.As further preferred, weldering
Connector 2 is 20-100N to the pressure that welding 20 applies, and the duration of pressurization is 10-50ms.
In addition, in traditional ultrasonic welding process, the conductive membrane layer on welding 20 and 10 surface of cell piece (such as molybdenum
Layer) cohesive process in be easy incorporation oxygen and aoxidize, both cause conjugation poor.In order to avoid this problem, one
In a little embodiments, preferably, protection air lift is set for device 4 as shown in Fig. 2, welding system further includes protection air lift for device 4
It sets on welding pedestal 101, for being passed through protective gas into the gap between cell piece 10 and welding 20.During this,
The constituent of protective gas is key factor wherein, it is preferable that protective gas is carbon dioxide, argon gas, helium or nitrogen
One of or at least two mixed gas.
It can further comprise conveyer in welding system in some embodiments of the present invention as further preferred
Structure 40 is further sent to the heat block 102 of 2 lower section of plumb joint for cell piece 10 to be sent to 2 region of plumb joint
On, the automation of entire welding procedure can be further realized with this, improves welding efficiency, realized volume production, brought certain warp
Ji benefit.
The specific implementation of welding system used in the welding procedure of busbar provided by the invention is described in detail above
Mode, the system can make the ultrasonic welding process of busbar be carried out, and accelerate intermetallic compounds layer growth, promoted
The reliability of product is made.In some embodiments simultaneously, to realize automatic welding in technical process.With
It is lower further the welding method of busbar of the invention to be illustrated in conjunction with above-mentioned technology contents.Specifically, of the invention
The welding method for a kind of busbar that embodiment provides, as shown in figure 4, including：
Cell piece 10 is fixed on the welding pedestal 101 of ultrasonic brazing unit by S1, and welding 20 is placed in cell piece
On 10；
S2 heats welding pedestal 101, and welding pedestal 101 conducts heat to cell piece 10；
S3 is welded together cell piece 10 and welding 20 using ultrasonic brazing unit, cell piece 10 and welding 20 it
Between formed intermetallic compounds layer 50.
This method can accelerate intermetallic compounds layer 50 to grow in the welding process, so that shape between welding and cell piece
At one layer of uniform intermetallic compounds layer, caused to solve since intermetallic compound growth is excessively slow and uneven thickness
Battery failure analysis pull test in pulling force it is uneven, the problem of can not meet the correct tension index of battery, improve work
The stability of skill and the reliability of product, reduce product defect rate, to reduce welding cost.
In addition, in some embodiments, preferably, cell piece 10 be fixed on welding pedestal 101 including：Using negative
Swaging generates negative pressure between cell piece 10 and welding pedestal 101 at device, and cell piece 10 is adsorbed on welding pedestal 101.
Specifically, it includes vacuum generator 103 that negative pressure, which forms device,；The side that cell piece 10 is carried on welding pedestal 101 is provided with energy
The heat block 102 of heat is enough conducted, heat block 102 offers several and vacuum generator 103 close to the side of cell piece 10
The vacuum hole 1021 being connected, and the open end of vacuum hole 1021 is directed at cell piece.
In some embodiments, preferably, further including before being heated to welding pedestal 101：In cell piece 10
It is passed through the protective gas of flowing at welding contact surface between welding 20, protective gas is introduced into cell piece 10 and welding
In gap between 20.Wherein, protective gas be one of carbon dioxide, argon gas, helium and nitrogen or at least two it is mixed
Close gas.
In some embodiments, preferably, including to welding pedestal 101 and heat：The temperature of detection welding pedestal 101
Degree opens heating device 100 when detecting the temperature of welding pedestal 101 lower than welding temperature preset value, to welding pedestal
101 are heated.This detection process can be acquired in real time by temperature sensor and feed back to control mechanism.It can also basis
It needs to be acquired with certain prefixed time interval, the temperature and welding temperature that control mechanism is fed back according to temperature sensor are pre-
If value is compared, when comparison result shows that the temperature for welding pedestal 101 is lower than welding temperature preset value, then start heating dress
100 pairs of cell pieces 10 are set to heat.In this course, normally, welding temperature preset value is 200 DEG C -400 DEG C.
In the ultrasonic bonding of busbar, ultrasonic brazing unit has generally included super as main welding equipment
Acoustic wave transducer 3, still, the frequency and power of ultrasonic transducer 3 are still the key factor in technology controlling and process.It is mentioned in the present invention
In the welding method of the busbar of confession, preferably, the frequency of ultrasonic transducer 3 is 20kHz-200kHz, ultrasonic wave transducer
The power of device 3 is 10-150w.On the other hand, in some embodiments, it is also possible to by control plumb joint 2 compress welding 20 to
Pressure size on cell piece 1 and the reliability that the time carrys out product made from lifting process is compressed, for example, ultrasonic brazing unit
The pressure controllable that pressurizes to welding of plumb joint be made as 20-100N, and the duration pressurizeed is controllable to 10-50ms.
Furthermore in order to promote the degree of automation of the welding method of busbar, welding efficiency is promoted, in some embodiments
In, preferably, cell piece 10 can be sent to by transmission mechanism before cell piece 10 is fixed on 101 on welding pedestal
Welding region.
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (10)
1. a kind of welding method of busbar, which is characterized in that including：
Cell piece is fixed on the welding pedestal of ultrasonic brazing unit, welding is placed on the cell piece；
The welding pedestal is heated, the welding pedestal conducts heat to the cell piece；
The cell piece and the welding are welded together using the ultrasonic brazing unit, the cell piece and the weldering
Intermetallic compounds layer is formed between band.
2. the welding method of busbar as described in claim 1, which is characterized in that described that cell piece is fixed on welding pedestal
On include：
Device is formed using negative pressure and generates negative pressure between the cell piece and the welding pedestal, the cell piece is adsorbed on
On the welding pedestal.
3. the welding method of busbar as claimed in claim 2, which is characterized in that it includes vacuum hair that the negative pressure, which forms device,
Raw device；
The side that the cell piece is carried on the welding pedestal is provided with the heat block that can conduct heat, and the heat block leans on
The side of the nearly cell piece offers several vacuum holes being connected with the vacuum generator, and the vacuum hole
Open end is directed at the cell piece.
4. the welding method of busbar as described in claim 1, which is characterized in that carry out heating it to the welding pedestal
Before, further include：
It is passed through protective gas at welding contact surface between the cell piece and the welding, the protective gas is introduced
Into the gap between the cell piece and the welding.
5. the welding method of busbar as claimed in claim 4, which is characterized in that the protective gas is carbon dioxide, argon
One of gas, helium and nitrogen or at least two mixed gas.
6. the welding method of busbar as described in claim 1, which is characterized in that described to be heated to the welding pedestal
Including：
The temperature for detecting the welding pedestal is opened when detecting the temperature of the welding pedestal lower than welding temperature preset value
Open heating device.
7. the welding method of busbar as claimed in claim 6, which is characterized in that the welding temperature preset value be 200 DEG C-
400℃。
8. the welding method of busbar as described in claim 1, which is characterized in that the ultrasonic brazing unit includes ultrasound
Wave transducer, the frequency of the ultrasonic transducer are 20kHz-200kHz, and the power of the ultrasonic transducer is 10-
150w。
9. the welding method of busbar as described in claim 1, which is characterized in that the ultrasonic brazing unit includes welding
Head, the plumb joint are 20-100N to the pressure that the welding pressurizes, and the duration of pressurization is 10-50ms.
10. such as the welding method of the described in any item busbars of claim 1-9, which is characterized in that be fixed on weldering in cell piece
Before connecing on pedestal, further include：
The cell piece is sent to welding region by transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810689200.0A CN108838507A (en) | 2018-06-28 | 2018-06-28 | A kind of welding method of busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810689200.0A CN108838507A (en) | 2018-06-28 | 2018-06-28 | A kind of welding method of busbar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108838507A true CN108838507A (en) | 2018-11-20 |
Family
ID=64200628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810689200.0A Pending CN108838507A (en) | 2018-06-28 | 2018-06-28 | A kind of welding method of busbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108838507A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299802A (en) * | 2018-12-11 | 2020-06-19 | 华夏易能(海南)新能源科技有限公司 | Method for connecting flat cable and molybdenum layer, welded structure, and CIGS solar cell |
| CN114131238A (en) * | 2021-11-29 | 2022-03-04 | 常州时创能源股份有限公司 | Brazing filler metal alloy for photovoltaic solder strip and preparation method and application thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4975133A (en) * | 1981-11-28 | 1990-12-04 | Licentia Patent-Verwaltungs-Gmbh | Apparatus for welding components together with the use of ultrasound |
| JP2008282919A (en) * | 2007-05-09 | 2008-11-20 | Showa Shell Sekiyu Kk | Connection method of ribbon wire of electronic component module or cis-system thin-film solar cell module |
| CN102248243A (en) * | 2010-05-05 | 2011-11-23 | 肖特太阳能股份公司 | Method and device for introducing solder onto a workpiece |
| WO2012099771A1 (en) * | 2011-01-17 | 2012-07-26 | Orthodyne Electronics Corporation | Systems and methods for processing ribbon and wire in ultrasonic bonding systems |
| CN102751359A (en) * | 2012-07-05 | 2012-10-24 | 合肥海润光伏科技有限公司 | Crystalline silicon solar battery slice string and manufacturing method thereof |
| CN103258890A (en) * | 2013-06-03 | 2013-08-21 | 常州比太科技有限公司 | Device for forming tin electrode wire on solar cell sheet |
| CN103639586A (en) * | 2013-11-25 | 2014-03-19 | 英利集团有限公司 | Solar cell assembly welding method |
| US20140124027A1 (en) * | 2011-05-31 | 2014-05-08 | Kyocera Corporation | Solar cell and method of manufacturing a solar cell |
| US20160204303A1 (en) * | 2013-08-21 | 2016-07-14 | Gtat Corporation | Using an active solder to couple a metallic article to a photovoltaic cell |
| CN106607644A (en) * | 2015-10-25 | 2017-05-03 | 亚特比目株式会社 | Ultrasonic soldering method and ultrasonic soldering device |
| CN206301811U (en) * | 2016-12-12 | 2017-07-04 | 阿特斯阳光电力集团有限公司 | Photovoltaic module |
| CN107225353A (en) * | 2017-06-07 | 2017-10-03 | 广东欧亚玛新能源科技有限公司 | A kind of five grid photovoltaic cell jigs |
-
2018
- 2018-06-28 CN CN201810689200.0A patent/CN108838507A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4975133A (en) * | 1981-11-28 | 1990-12-04 | Licentia Patent-Verwaltungs-Gmbh | Apparatus for welding components together with the use of ultrasound |
| JP2008282919A (en) * | 2007-05-09 | 2008-11-20 | Showa Shell Sekiyu Kk | Connection method of ribbon wire of electronic component module or cis-system thin-film solar cell module |
| CN102248243A (en) * | 2010-05-05 | 2011-11-23 | 肖特太阳能股份公司 | Method and device for introducing solder onto a workpiece |
| WO2012099771A1 (en) * | 2011-01-17 | 2012-07-26 | Orthodyne Electronics Corporation | Systems and methods for processing ribbon and wire in ultrasonic bonding systems |
| US20140124027A1 (en) * | 2011-05-31 | 2014-05-08 | Kyocera Corporation | Solar cell and method of manufacturing a solar cell |
| CN102751359A (en) * | 2012-07-05 | 2012-10-24 | 合肥海润光伏科技有限公司 | Crystalline silicon solar battery slice string and manufacturing method thereof |
| CN103258890A (en) * | 2013-06-03 | 2013-08-21 | 常州比太科技有限公司 | Device for forming tin electrode wire on solar cell sheet |
| US20160204303A1 (en) * | 2013-08-21 | 2016-07-14 | Gtat Corporation | Using an active solder to couple a metallic article to a photovoltaic cell |
| CN103639586A (en) * | 2013-11-25 | 2014-03-19 | 英利集团有限公司 | Solar cell assembly welding method |
| CN106607644A (en) * | 2015-10-25 | 2017-05-03 | 亚特比目株式会社 | Ultrasonic soldering method and ultrasonic soldering device |
| CN206301811U (en) * | 2016-12-12 | 2017-07-04 | 阿特斯阳光电力集团有限公司 | Photovoltaic module |
| CN107225353A (en) * | 2017-06-07 | 2017-10-03 | 广东欧亚玛新能源科技有限公司 | A kind of five grid photovoltaic cell jigs |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299802A (en) * | 2018-12-11 | 2020-06-19 | 华夏易能(海南)新能源科技有限公司 | Method for connecting flat cable and molybdenum layer, welded structure, and CIGS solar cell |
| CN114131238A (en) * | 2021-11-29 | 2022-03-04 | 常州时创能源股份有限公司 | Brazing filler metal alloy for photovoltaic solder strip and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108838507A (en) | A kind of welding method of busbar | |
| WO2014190854A1 (en) | Laser welding method for connecting crystalline silicon solar cells | |
| WO2005064694A1 (en) | Method and apparatus for producing solar battery module | |
| CN109623220A (en) | Converge welder and solar cell chip bonding machine | |
| CN101562211A (en) | Method for packaging solar module | |
| CN208644372U (en) | A kind of busbar welding system | |
| CN103258890A (en) | Device for forming tin electrode wire on solar cell sheet | |
| CN103921005A (en) | Hot-pressing electric resistance welding type microscopic welding equipment | |
| CN108544075A (en) | A kind of busbar welding system | |
| CN210215624U (en) | Silicon carbide seed crystal sticking and pressurizing mechanism | |
| CN109249131A (en) | A kind of 316L bipolar plate of stainless steel laser welding process | |
| WO2024055763A1 (en) | Photovoltaic cell connection process | |
| WO2024120130A1 (en) | Method for positioning and connecting metal-free electrode cell in photovoltaic module | |
| KR101287632B1 (en) | Device of heating and bonding for lead film and method thereof | |
| CN107538124A (en) | A kind of diffusion connection method of lithium battery combination electrode | |
| CN102049601B (en) | Current-assisted fuel cell ultra-thin metal bipolar plate pressure welding device and method | |
| CN110153558A (en) | A kind of laser welding jig and method of lithium battery electric core positive/negative plate and extraction tab | |
| CN102059441B (en) | High-frequency current direct heating soldering method for crystalline silicon solar cell | |
| CN211125669U (en) | High-reliability crystalline silicon solar cell packaging assembly | |
| CN209664643U (en) | Converge welder and solar cell chip bonding machine | |
| CN103639586B (en) | A kind of solar module welding method | |
| CN208358018U (en) | A kind of Soft Roll laminated type lithium ion battery supersonic welding transfer electrode lug frock clamp | |
| CN203509276U (en) | Cooling device for welded solar cell panel | |
| CN207967017U (en) | A kind of solar cell module confluence band structure | |
| CN206286704U (en) | A kind of welder of lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181120 |