CN109940272A - Solar cell bus bar laser welding equipment - Google Patents
Solar cell bus bar laser welding equipment Download PDFInfo
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- CN109940272A CN109940272A CN201910343164.7A CN201910343164A CN109940272A CN 109940272 A CN109940272 A CN 109940272A CN 201910343164 A CN201910343164 A CN 201910343164A CN 109940272 A CN109940272 A CN 109940272A
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- solar cell
- bus bar
- cell bus
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- 238000003466 welding Methods 0.000 title claims abstract description 236
- 230000033001 locomotion Effects 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims abstract description 27
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000035515 penetration Effects 0.000 claims abstract description 10
- 239000002344 surface layer Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000012943 hotmelt Substances 0.000 claims abstract description 5
- 238000002309 gasification Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000003384 imaging method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000035900 sweating Effects 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000000843 powder Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000004093 laser heating Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229930183489 erectone Natural products 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
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- Laser Beam Processing (AREA)
Abstract
The present invention relates to solar cell bus bar laser welding equipments, include: laser, export laser beam, provide busbar welding welding energy；Light beam focusing system focuses the laser beam to welding region；Precompressed mechanism applies precompression in the areas adjacent for needing to weld；Z-motion unit, focusing and defocus control for laser beam；One-dimensional automatically controlled motion platform, driving plumb joint are moved along busbar direction, realize the welding of whole welding.It realizes heat-conducted welding or penetration welding, is heated using continuous wave laser butt welding band, when heating temperature is higher than tin fusing point, the heated hot melt of the surface layer tin layers of welding interconnects between realizing tin layers, i.e., heat-conducted welding；Using pulse laser focusing on welding, active region forms extremely strong laser energy density, and tin and the internal copper gasification on surface layer, forming cavity inside busbar welding causes closely to be engaged between internal copper product, the layers of copper of two layers of welding is directly fused to form high weld strength, i.e. penetration is welded.
Description
Technical field
The present invention relates to a kind of solar cell bus bar laser welding equipments, belong to technical field of laser processing.
Background technique
Currently, increasingly desirable more more clean energy carry out meet demand with global technology and economic fast development.
Solar energy resources do not have carbon dioxide discharge in power generation and environmental pressure is small, therefore many countries and regions are all being sent out energetically
Solar energy (such as photovoltaic) battery is opened up as the energy.
Monolithic solar cell effect is limited, and solar cell module becomes better choice.Solar cell module is wanted
It realizes that the function of power generation connects monolithic solar cell and becomes an entirety.Currently, in solar battery group
Busbar is all made of in part packaging technology as connection confluence purpose.
Busbar welding is a kind of painting tin copper strips.The main method of current busbar welding is welded by electric iron.?
Solar battery needs to be connected multi-string battery with busbar after completing series welding, and cell piece is together in series by busbar, and electric current is logical
It crosses busbar and flows through subsequent terminal box, then divide positive and negative anodes lead-out wire, ultimately form the solar cell module of higher power.Often
The welding method of rule is to use electric iron by the end lead of every string battery and busbar thermofussion welding automatically by artificial or equipment
It connects.Firstly, the welding welded to needs is needed to be preheating to certain temperature before welding；Secondly, needing between the welding of welding
Fill the scaling powders such as solder stick or tin cream；Again, the electric current and soldering tip temperature for controlling electric iron guarantee welding effect；Finally will
Electric iron is acted on certain pressure to be needed the welding position welded and is kept for the regular hour, guarantees weld strength.The weldering
Connecing the consumptive materials expenses such as method welding sequence complexity, fluxing agent, electric iron, welding end has material residual and oxidation to ask for a long time
Topic is easy to cause the disadvantages such as failure welding, and more and more unsuitable solar cell module intelligence, high efficiency, high-quality manufacture
Growth requirement.
Summary of the invention
The purpose of the present invention is overcoming the shortcomings of the prior art, a kind of solar cell bus bar laser welding is provided
Equipment.
The purpose of the present invention is achieved through the following technical solutions:
Solar cell bus bar laser welding equipment, feature is: include:
Laser exports laser beam, provides busbar welding welding energy；
Light beam focusing system focuses the laser beam to welding region；
Precompressed mechanism applies precompression in the areas adjacent for needing to weld；
Z-motion unit, focusing and defocus control for laser beam；
One-dimensional automatically controlled motion platform, driving plumb joint are moved along busbar direction, realize the welding of whole welding.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein cloth on the output light path of laser
Light beam focusing system is set, light beam focusing system includes beam expanding lens, reflecting mirror and the laser welding head being arranged along optical path, beam expanding lens
Laser beam after expanding enters laser welding head through reflecting mirror, and laser welding head focuses the laser beam on welding sample.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the laser welding head includes poly-
Jiao Jing and the coaxial temperature feedback system for being used to monitor laser welding regional temperature placed on it, focus lamp focal length 5mm~
Laser beam formation converging beam is focused on welding sample by 10000mm, focus lamp, and temperature feedback system receives in welding process
Heat radiation reflected light, heat radiation reflected light are transmitted to temperature feedback system, temperature feedback system by focus lamp and through reflecting mirror
System acquisition sweating heat radiation laser beam is converted into temperature information, and demarcates to the temperature of welding region.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the laser welding head is installed on
On first Z-motion unit, can upper and lower translation to adjust laser welding head focus and laser welding spot size.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the first Z-motion list
Member is installed on one-dimensional automatically controlled motion platform.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein also comprising for detecting welding position
The vision imaging system set, vision imaging system are installed on the second Z-motion unit, can move up and down adjusting vision imaging
Focus, the location information of identification welding sample.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the second Z-motion list
Member is installed on one-dimensional automatically controlled motion platform.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the vision imaging system includes
Camera and the Image lens and lighting source being connected thereto.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the precompressed mechanism includes L-type
Stand, guide plate and guide rod, the side of L-type stand erect one guide plate of installation, vertically offer guiding on guide plate
The transverse slat of slot, L-type stand is equipped with axial hole, and guide rod is placed in axial hole, can slide up and down along it, the upper end of guide rod
One guide pad is installed, guide pad is matched in the guide groove of guide plate, can be slided up and down along guide groove, and the lower section of guide rod is nested with
A pinch roller seat is installed in the lower end of one spring, guide rod, and the upper end of spring is abutted against with the transverse slat bottom surface of L-type stand, spring
Lower end abutted against with pinch roller seat, pinch roller is installed in pinch roller seat.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the laser welding head is scanning
Galvanometer, fixed plumb joint or swing type plumb joint.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the laser is continuous laser
Device or pulse laser, continuous wave laser interconnect making the surface layer tin layers of welding are heated to heat realization tin layers welding heating, are
Heat-conducted welding；Pulse laser focusing forms in active region and strong laser energy density gasifies material, in material on welding
The internal cavity that formed of material causes closely to be engaged between material, and the layers of copper welding of two layers of welding forms high weld strength, to wear
Saturating formula welding.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein the continuous wave laser is wavelength
400nm~3000nm or 9000nm~11000nm, mean power are greater than gas laser, semiconductor laser or the optical fiber of 10W
Laser.
Further, above-mentioned solar cell bus bar laser welding equipment, wherein centered on the pulse laser
Wavelength 400nm~3000nm or 9000nm~11000nm, mean power are big greater than 10W, repetition rate 1Hz~10MHz, power
In the pulse laser of 10W, pulse duration 10fs~10ms.
The present invention has significant advantages and beneficial effects compared with prior art, embodies in the following areas:
1. the present invention carries out busbar welding using laser, realizes heat-conducted welding or penetration welding, swashed using continuous
Light device butt welding band is heated, and when heating temperature is higher than 232 DEG C of tin fusing point, the heated hot melt of the surface layer tin layers of welding is made to realize tin
The interconnection of interlayer, i.e., heat-conducted welding；Using pulse laser focusing on welding, it is close that extremely strong laser energy is formed in active region
Degree, by the tin on surface layer and internal copper direct gasification, cavity is formed inside busbar welding to be caused between internal copper product tightly
Close occlusion, the layers of copper of two layers of welding is directly fused to form high weld strength, i.e. penetration is welded；
2. the present invention utilizes the busbar of laser welding solar cell module, welding sequence is simple, does not need to preheat；Weldering
It connects at low cost, does not need the consumptive materials such as scaling powder；Welding quality is high, untouchable welding, and weld strength is high, weldering spot it is small, it can be achieved that
Seamless welding；
3. welding stability is good, laser heating efficiency is high, and process control is more accurate.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that by implementing specific embodiment of the invention understanding.The objectives and other advantages of the invention can be by institute
Specifically noted structure is achieved and obtained in specification, claims and the attached drawing write.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1: structural schematic diagram of the invention；
Fig. 2: the structural schematic diagram of precompressed mechanism；
Fig. 3: the process schematic representation of heat-conducted welding；
Fig. 4: the process schematic representation of penetration welding；
Fig. 5: the schematic diagram of fixed-point type welding；
Fig. 6: the schematic diagram of "-" type formula welding；
Fig. 7: the schematic diagram of 8-shaped formula welding.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, directional terminology and ordinal term etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
As shown in Figure 1, solar cell bus bar laser welding equipment of the present invention, mainly includes:
Laser 10 exports laser beam, provides busbar welding welding energy, realizes sweat soldering or penetration weldering
It connects；
Light beam focusing system focuses the laser beam to welding region；
Precompressed mechanism 50 applies precompression in the areas adjacent for needing to weld, guarantees to come into full contact between two layers of welding；
Z-motion (up and down motion) unit, focusing and defocus control for laser beam；
One-dimensional automatically controlled motion platform 70, driving plumb joint are moved along busbar direction, realize the welding of whole welding；
Temperature feedback system 32 synchronizes monitoring to laser welding regional temperature, monitors Laser Welding Quality；
Vision imaging system 40 detects welding position in advance, adjusts welding track according to welding position, accurate to control
Welding position processed；
Control system 90, to the synchronously control of laser switch light and one-dimensional electric control platform, it can be achieved that (such as to laser parameter
Laser power etc.) adjust, it can be achieved that motion platform parameter (such as movement velocity) adjust, can temperature collection feedback system data
Welding effect is monitored.
Arrange that light beam focusing system, light beam focusing system include to expand along what optical path was arranged on the output light path of laser 10
Mirror 20, reflecting mirror 101 and laser welding head 30, the laser beam that laser 10 exports passes through beam expanding lens 20, straight to laser beam
Diameter carries out expanding control, and the laser beam after beam expanding lens 20 expands enters laser welding head 30, laser welding head through reflecting mirror 101
30 focus the laser beam on welding sample 60.
Laser welding head 30 includes focus lamp 31 and placed on it coaxial for monitoring laser welding regional temperature
Temperature feedback system 32,31 focal length 5mm~10000mm of focus lamp, focus lamp 31 focus on laser beam formation converging beam
Sample 60 is welded, temperature feedback system 32 receives heat radiation reflected light in welding process, and heat radiation reflected light passes through focus lamp 31
And it is transmitted to temperature feedback system 32 through reflecting mirror 101, temperature feedback system 32 acquires sweating heat radiation laser beam and is converted into temperature
Information is spent, and the temperature of welding region is demarcated.Laser welding head 30 is installed on the first Z-motion unit 81, can
Upper and lower translation is to adjust laser welding head focus and laser welding spot size.First Z-motion unit 81 is installed on one
It ties up on automatically controlled motion platform 70.
Vision imaging system 40 for detecting welding position is installed on the second Z-motion unit 82, can on move down
It is dynamic to adjust vision imaging focus, the location information of identification welding sample 60.Second Z-motion unit 82 is installed on one-dimensional automatically controlled
On motion platform 70.Vision imaging system 40 includes camera 41 and the Image lens 42 and lighting source 43 that are connected thereto.Depending on
Feel that image system 40 can carry out measured in advance to the position of busbar welding, and location information collected in control system 90,
Welding position is modified by control system, promotes the accuracy of welding position.
One-dimensional automatically controlled motion platform 70 can drive laser welding head 30, vision imaging system 40 jointly mobile, weld sample
Product 60 are fixed on smooth welded plate, and busbar welding 61 and interconnecting strip welding 62 keep overlapped state.
Control system 90, the parameter settings such as power with the switch of 10 interconnected control laser of laser, laser, with temperature
The current temperature in the interconnection acquisition of feedback system 32 welding section is spent, and then can judge welding effect according to the physical characteristic of welding material
Fruit interconnects the location information of acquisition welding sample with vision imaging system 40, interconnects with one-dimensional automatically controlled motion platform 70, control one
Tie up the setting of the parameters such as movement starting and stopping, the movement velocity of automatically controlled motion platform 70.When specific welding application, vision first
Location information is simultaneously transferred to control system 90 by the location information of the acquisition welding sample 60 of image system 40, according to the welding of acquisition
The location information of sample 60 determines laser welding track, and then from control system 90 to laser 10 and one-dimensional automatically controlled motion platform
70 send starting, the halt instruction of laser switch instruction and motion platform respectively, implement laser welding, in laser beam welding
Middle temperature feedback system 32 in real time imitate by acquisition welding region temperature, the fusing point multilevel iudge welding of temperature collection and welding material
Fruit.
As shown in Fig. 2, precompressed mechanism 50 includes L-type stand 56, guide plate 51 and guide rod 53, the side of L-type stand 56
One guide plate 51 of installation is erect in face, and guide groove is vertically offered on guide plate 51, and the transverse slat of L-type stand 56 is equipped with axial
Hole, guide rod 53 are placed in axial hole, can be slided up and down along it, and a guide pad 52, guide pad are installed in the upper end of guide rod 53
52 are matched in the guide groove of guide plate 51, can slide up and down along guide groove, and the lower section of guide rod 53 is nested with a spring 54, guiding
A pinch roller seat is installed in the lower end of bar 53, and the upper end of spring 54 is abutted against with the transverse slat bottom surface of L-type stand 56, under spring 54
End is abutted against with pinch roller seat, and pinch roller 55 is equipped in pinch roller seat.It is drivingly connected, is driven above and below it by a cylinder and L-type stand 56
Movement, when driving its downward precompressed, the spring 54 on guide rod 53 is compressed, and precompressed pushing displacement is bigger, and precompression is bigger.
When precompressed, the pinch roller 55 in pinch roller seat is contacted with welding, and pinch roller 55 is in rolling contact along welding direction when laser welding, guarantees welding
Effect, and pinch roller 55 remains in the front of laser welding head in welding direction of travel.
The precompression that precompressed mechanism 50 gives welding 60 surface of sample to apply vertical direction near welding position before welding,
Guarantee that the welding position of welding sample fits closely, and keeps preloading condition precompressed mechanism 50 and welding sample in welding process
The spacing of 60 pressing position and welding region is adjustable, and precompressed mechanism 50 applies the precompressed of vertical direction to welding 60 surface of sample
Power is adjustable.When welding, welding precompressed mechanism 50 can be with one-dimensional automatically controlled motion platform 70 and welding sample surfaces precompressed sliding.
Precompressed mechanism 50 controlled can be gone up and down, and guarantee that laser welding areas adjacent has the precompressed along welding surface vertical direction
Power guarantees accurate fitting between welding region welding, can be single-point precompressed or multiple spot precompressed, the precompression between welding can
It adjusts, the fixed structure that relative position can be kept constant with welding, the moving structure that can also be slided on welding surface.
Scanning galvanometer, fixed plumb joint or swing type plumb joint can be used in laser welding head 30.It can in laser welding
To be fixed hot spot welding, it is also possible to carry out swing welding with mobile track.
Laser 10 is continuous wave laser or pulse laser, as shown in figure 3, being made using continuous wave laser to welding heating
The heated hot melt of the surface layer tin layers of welding interconnects between realizing tin layers, and continuous wave laser carries out heat-conducted welding and realizes welding surface tin layers
Hot-melt adhesive paste, i.e., heat-conducted welding.
Penetration welding is carried out using pulse laser, as shown in figure 4, pulse laser focusing is on welding, in active region
Material is gasified strong laser energy density by formation, and laser directly gasifies the surface tin layers and internal copper layer of welding, in material
The internal cavity that formed of material causes closely to be engaged between material, and the layers of copper welding of two layers of welding forms high weld strength, that is, wears
Saturating formula welding, reaches high-intensity welding.
Continuous wave laser is the gas of wavelength 400nm~3000nm or 9000nm~11000nm, mean power greater than 10W
Laser, semiconductor laser or optical fiber laser.
Pulse laser is center wavelength 400nm~3000nm or 9000nm~11000nm, mean power is greater than 10W, again
Complex frequency 1Hz~10MHz, power are greater than the pulse laser of 10W, pulse duration 10fs~10ms.
Control system 90 includes motion controller, image pick-up card and industrial computer, and wherein PLC can be used in motion controller
TF5271-0080 or motion control board GT-400-SG, motion controller respectively with laser and one-dimensional automatically controlled motion platform control
System connection, image pick-up card connect vision imaging system, and motion controller, image pick-up card and temperature feedback system are connected to work
Industry computer.
Specific welding can be fixed-point type welding, such as Fig. 5；It is also possible to the welding of laser beam swing type, the mode of swing can be with
It is "-" type formula welding such as Fig. 6 or the welding of 8-shaped formula such as Fig. 7, or other means.
In conclusion the present invention carries out busbar welding using laser, heat-conducted welding or penetration welding, thermal conductivity are realized
Formula welding is heated using continuous wave laser butt welding band, when heating temperature is higher than 232 DEG C of tin fusing point, makes the surface layer of welding
The heated hot melt of tin layers realizes the interconnection between tin layers；Penetration welding is using pulse laser focusing on welding, in active region shape
At extremely strong laser energy density, by the tin on surface layer and internal copper direct gasification, cavity is formed inside busbar welding and is caused
Make closely to be engaged between internal copper product, the layers of copper of two layers of welding is directly fused to form high weld strength.
The present invention utilizes the busbar of laser welding solar cell module, and welding sequence is simple, does not need to preheat；Welding
It is at low cost, do not need the consumptive materials such as scaling powder；Welding quality is high, untouchable welding, and weld strength is high, and weldering spot is small, it can be achieved that nothing
Trace welding；Welding stability is good, and laser heating efficiency is high, and process control is more accurate.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
The above is only a specific embodiment of the present invention, but scope of protection of the present invention is not limited thereto, any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to protection scope described in claim.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (13)
1. solar cell bus bar laser welding is equipped, it is characterised in that: include:
Laser exports laser beam, provides busbar welding welding energy；
Light beam focusing system focuses the laser beam to welding region；
Precompressed mechanism applies precompression in the areas adjacent for needing to weld；
Z-motion unit, focusing and defocus control for laser beam；
One-dimensional automatically controlled motion platform, driving plumb joint are moved along busbar direction, realize the welding of whole welding.
2. solar cell bus bar laser welding equipment according to claim 1, it is characterised in that: the laser
Arrange that light beam focusing system, light beam focusing system include beam expanding lens, reflecting mirror and the laser being arranged along optical path on output light path
Plumb joint, the laser beam after beam expanding lens expands enter laser welding head through reflecting mirror, and laser welding head focuses the laser beam to
It welds on sample.
3. solar cell bus bar laser welding equipment according to claim 2, it is characterised in that: the laser welding
Head includes that focus lamp and the coaxial temperature feedback system for being used to monitor laser welding regional temperature placed on it, focus lamp are burnt
Away from 5mm~10000mm, laser beam formation converging beam is focused on welding sample by focus lamp, and temperature feedback system receives weldering
Heat radiation reflected light in termination process, heat radiation reflected light are transmitted to temperature feedback system by focus lamp and through reflecting mirror, temperature
Degree feedback system acquisition sweating heat radiation laser beam is converted into temperature information, demarcates to the temperature of welding region.
4. solar cell bus bar laser welding equipment according to claim 2 or 3, it is characterised in that: the laser
Plumb joint is installed on the first Z-motion unit, can upper and lower translation to adjust laser welding head focus and laser welding light
Spot size.
5. solar cell bus bar laser welding equipment according to claim 4, it is characterised in that: first Z axis
It is installed on one-dimensional automatically controlled motion platform to moving cell.
6. solar cell bus bar laser welding equipment according to claim 1, it is characterised in that: also comprising for examining
The vision imaging system of welding position is surveyed, vision imaging system is installed on the second Z-motion unit, can move up and down adjusting
Vision imaging focus, the location information of identification welding sample.
7. solar cell bus bar laser welding equipment according to claim 6, it is characterised in that: second Z axis
It is installed on one-dimensional automatically controlled motion platform to moving cell.
8. solar cell bus bar laser welding equipment according to claim 6, it is characterised in that: the vision imaging
System includes camera and the Image lens and lighting source that are connected thereto.
9. solar cell bus bar laser welding equipment according to claim 1, it is characterised in that: the precompressed mechanism
Comprising L-type stand, guide plate and guide rod, one guide plate of installation is erect in the side of L-type stand, vertically opens up on guide plate
There is guide groove, the transverse slat of L-type stand is equipped with axial hole, and guide rod is placed in axial hole, can slide up and down along it, guide rod
A guide pad is installed in upper end, and guide pad is matched in the guide groove of guide plate, can slide up and down along guide groove, under guide rod
Section is nested with a spring, and a pinch roller seat is installed in the lower end of guide rod, and the upper end of spring offsets with the transverse slat bottom surface of L-type stand
It connects, lower end and the pinch roller seat of spring abut against, and pinch roller is equipped in pinch roller seat.
10. solar cell bus bar laser welding equipment according to claim 2, it is characterised in that: the Laser Welding
Connector is scanning galvanometer, fixed plumb joint or swing type plumb joint.
11. solar cell bus bar laser welding equipment according to claim 1, it is characterised in that: the laser
For continuous wave laser or pulse laser, continuous wave laser makes the heated hot melt of surface layer tin layers of welding realize tin layers welding heating
Between interconnect, i.e., heat-conducted welding；Pulse laser focusing is formed strong laser energy density in active region by material on welding
Gasification, forming cavity in material internal causes closely to be engaged between material, and the layers of copper welding of two layers of welding forms high welding
The welding of intensity, i.e. penetration.
12. solar cell bus bar laser welding equipment according to claim 11, it is characterised in that: described continuous sharp
Light device is wavelength 400nm~3000nm or 9000nm~11000nm, mean power is greater than the gas laser of 10W, semiconductor swashs
Light device or optical fiber laser.
13. solar cell bus bar laser welding equipment according to claim 11, it is characterised in that: the pulse swashs
Light device be center wavelength 400nm~3000nm or 9000nm~11000nm, mean power be greater than 10W, repetition rate 1Hz~
10MHz, power are greater than the pulse laser of 10W, pulse duration 10fs~10ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343164.7A CN109940272A (en) | 2019-04-26 | 2019-04-26 | Solar cell bus bar laser welding equipment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111940900A (en) * | 2020-07-31 | 2020-11-17 | 深圳市润安科技发展有限公司 | Method and system for welding anti-tension component in wrist strap based on optical device |
| CN113070574A (en) * | 2021-04-29 | 2021-07-06 | 深圳市艾雷激光科技有限公司 | Laser welding method, laser welding device and computer-readable storage medium |
| CN114309939A (en) * | 2022-01-07 | 2022-04-12 | 武汉锐科光纤激光技术股份有限公司 | Copper-based sheet material belt laser welding method and laser welding equipment |
| CN114799525A (en) * | 2022-05-28 | 2022-07-29 | 苏州快可光伏电子股份有限公司 | Photovoltaic module bus bar and junction box rapid welding process and photovoltaic module |
| CN117161561A (en) * | 2023-08-31 | 2023-12-05 | 广东芯聚能半导体有限公司 | Method and system for welding chip and copper frame and chip assembly |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111940900A (en) * | 2020-07-31 | 2020-11-17 | 深圳市润安科技发展有限公司 | Method and system for welding anti-tension component in wrist strap based on optical device |
| CN111940900B (en) * | 2020-07-31 | 2022-06-03 | 深圳市润安科技发展有限公司 | Method and system for welding anti-tension component in wrist strap based on optical device |
| CN113070574A (en) * | 2021-04-29 | 2021-07-06 | 深圳市艾雷激光科技有限公司 | Laser welding method, laser welding device and computer-readable storage medium |
| CN114309939A (en) * | 2022-01-07 | 2022-04-12 | 武汉锐科光纤激光技术股份有限公司 | Copper-based sheet material belt laser welding method and laser welding equipment |
| CN114309939B (en) * | 2022-01-07 | 2024-05-03 | 武汉锐科光纤激光技术股份有限公司 | Laser welding method and laser welding equipment for copper-based sheet material belt |
| CN114799525A (en) * | 2022-05-28 | 2022-07-29 | 苏州快可光伏电子股份有限公司 | Photovoltaic module bus bar and junction box rapid welding process and photovoltaic module |
| CN117161561A (en) * | 2023-08-31 | 2023-12-05 | 广东芯聚能半导体有限公司 | Method and system for welding chip and copper frame and chip assembly |
| CN117161561B (en) * | 2023-08-31 | 2024-04-09 | 广东芯聚能半导体有限公司 | Method and system for welding chip and copper frame and chip assembly |
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