CN115555864B - Photovoltaic solder strip carrier assembly, welding equipment and welding method - Google Patents
Photovoltaic solder strip carrier assembly, welding equipment and welding method Download PDFInfo
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- CN115555864B CN115555864B CN202211546431.9A CN202211546431A CN115555864B CN 115555864 B CN115555864 B CN 115555864B CN 202211546431 A CN202211546431 A CN 202211546431A CN 115555864 B CN115555864 B CN 115555864B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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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
- 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
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
Abstract
The invention discloses a photovoltaic solder strip carrier assembly, a welding device and a welding method, wherein the welding method comprises the following steps: a first carrier for winding a solder ribbon, the first carrier having a rotational degree of freedom; the second carrier is at least partially arranged at the lower side of the first carrier, and the first carrier has a freedom of movement relative to the second carrier; the first carrier is provided with at least one operation surface, the cut welding strip is distributed on the operation surface, the operation surface is provided with an adsorption hole, and the welding strip is adsorbed and fixed on the operation surface by forming negative pressure in the adsorption hole; the second carrier is provided with an accommodating groove extending along the preset direction; when at least one operation face is in the unloading state, the adsorption hole breaks off the adsorption force to the solder strip to make the solder strip shift to in the holding tank. Through the arrangement, the welding strip can be arranged in a positive-negative staggered mode, a plurality of battery pieces can be conveniently placed on the second carrier subsequently to form a battery string, the welding efficiency of the battery string is improved, and the structure of the welding equipment is simplified.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a photovoltaic solder strip carrier assembly, a welding device and a welding method.
Background
With the development of photovoltaic technology, in order to improve the electric energy conversion rate of a cell, a plurality of cells are welded together through a welding strip, so as to form a cell string; therefore, in order to meet the above-mentioned process requirements, welding equipment for welding the battery pieces to form the battery string is inoculated.
In the prior art, the battery pieces are connected with each other through the welding strips, and the welding strips are firstly welded on the flat battery pieces, so that the welding strips are required to be arranged on the surfaces of the battery pieces, and the welding strips and the battery pieces are welded after heating and curing; the welding step of the welding strip comprises the steps of pulling the welding strip, cutting the welding strip, transferring the welding strip, arranging and placing the welding strip and welding the welding strip, the welding strip has flexibility and small diameter, the welding strip is transferred and arranged between the manipulators after being cut, and therefore the manipulator for clamping the welding strip needs to be provided with a plurality of groups of clamping structures to clamp the plurality of groups of welding strips, so that the welding equipment is complicated in structure and high in cost.
Therefore, the technical problems of the prior art are as follows: the welding equipment has a complex structure and low welding efficiency.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a photovoltaic solder strip carrier assembly, a soldering device and a soldering method, which can simplify the structure of the photovoltaic solder strip carrier assembly.
In order to achieve the purpose, the invention adopts the following technical scheme:
a photovoltaic solder ribbon carrier assembly for pre-processing of cell pieces and solder ribbons, the carrier assembly comprising: a first carrier for winding a solder ribbon, the first carrier having a rotational degree of freedom; the second carrier is at least partially arranged at the lower side of the first carrier, and the first carrier has a freedom of movement relative to the second carrier; the first carrier is provided with at least one operation surface, the cut welding strip is distributed on the operation surface, the operation surface is provided with an adsorption hole, and the welding strip is adsorbed and fixed on the operation surface by forming negative pressure in the adsorption hole; the second carrier is provided with an accommodating groove extending along the preset direction; when at least one operation face is in the unloading state, the adsorption hole breaks off the adsorption force to the welding strip to make the welding strip shift to the holding tank, wherein, the unloading state indicates that at least one operation face can be with the state of falling to the holding tank in welding strip after cutting.
Further, first carrier sets up to one, and first carrier sets up to remove along left right direction at least to make first carrier alternately place and take to the holding tank after cutting.
Further, first carrier sets up to two, and two first carriers stagger in the ascending position of left right direction to make first carrier alternately place and take to the holding tank through welding after cutting.
Furthermore, the accommodating groove comprises a first groove group and a second groove group, the first groove group and the second groove group extend along the preset direction, the first groove group and the second groove group are arranged at intervals, and the adjacent first groove group and the second groove group are arranged in a staggered mode.
Further, the holding tank sets up to adsorbing the groove, when welding the area and being arranged in the holding tank, through forming the negative pressure in order to make to weld the area and adsorb to the holding tank in to the holding tank.
Furthermore, a groove body is arranged on the first carrier, the groove body is arranged on the operation surface, adjacent groove bodies on the operation surface are parallel to each other and are equidistant, and the adsorption holes are formed in the groove body.
Further, both ends all are provided with the holder about first carrier is on length direction, and the holder is used for the head and the tail both ends of centre gripping welding strip.
In order to achieve the purpose, the invention adopts the following technical scheme:
a welding apparatus, comprising: the first mechanism comprises a cutting assembly, an upper sheet assembly, a heating assembly and a lower sheet assembly; a second mechanism comprising a carrier assembly comprising a second carrier and at least one first carrier, the first and second carriers each having a degree of freedom of movement; the first carrier comprises a cutting station and a blanking station, and when the first carrier is positioned at the cutting station, the cutting assembly cuts the welding strip on the first carrier; when the first carrier is positioned at a blanking station, the first carrier transfers the cut welding strip to a second carrier; the second carrier moves among the first carrier, the upper piece assembly, the heating assembly and the lower piece assembly and is provided with a first station, a second station, a third station and a fourth station, and when the second carrier is positioned at the first station, the first carrier transfers the cut welding strip to an accommodating groove of the second carrier; when the second carrier is at the second station, the cell loading assembly is used for placing the cell on the second carrier; when the second carrier is positioned at the third station, the heating assembly heats the battery plate to enable the battery plate and the welding strip to be welded and form a battery string; when the second carrier is at the fourth station, the lower sheet assembly takes down the battery string.
Further, the heating assembly further comprises a wind power module, the wind power module is arranged on the upper side of the heating assembly, and the wind power module transfers heat of the heating assembly to the battery piece.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of welding, comprising:
winding the welding strip on a first carrier, and cutting the welding strip on the operation surface by a cutting assembly to form a plurality of groups of welding strip groups;
transferring the solder strip group on each operation surface into a containing groove of a second carrier through rotation and movement of the first carrier;
placing the battery piece on a second carrier through the piece loading assembly;
heating the battery plate and/or the welding strip through the heating assembly so as to weld the battery plate and the welding strip and form a battery string;
and removing the battery string through the lower piece assembly.
The photovoltaic welding strip carrier assembly, the welding equipment and the welding method provided by the invention can enable the welding strip to move from the first carrier to the holding grooves which are arranged in a staggered manner, so that the positive and negative electrodes of the welding strip are arranged in a staggered manner, a plurality of battery pieces can be conveniently placed on the second carrier to form a battery string, the welding efficiency of the battery string is improved, the structure of the welding equipment is simplified, and the requirement that the arrangement quantity of the multi-wire welding strip is increased continuously is met.
Drawings
FIG. 1 is a schematic view of a welding apparatus according to the present invention.
FIG. 2 is a schematic structural diagram of a first carrier according to the present invention.
FIG. 3 is a schematic structural diagram of a second carrier according to the present invention.
Fig. 4 is a partially enlarged view of the invention at a in fig. 2.
Fig. 5 is a schematic structural view of the heating assembly of the present invention.
FIG. 6 is a schematic view of the welding method of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings in the embodiment of the present invention.
As shown in fig. 1, a welding apparatus 100 for welding between a battery cell 200 and a welding strip 300. The welding apparatus 100 includes an apparatus body 11, a first mechanism 12, and a second mechanism 13. The first mechanism 12 is at least partially disposed on the apparatus body 11, and the first mechanism 12 is used for cutting the solder strip 300, feeding the battery piece 200, welding the solder strip 300, and feeding the battery piece 200. The second mechanism 13 is used for carrying the welding strip 300 and the battery piece 200, and sequentially completing cutting of the welding strip 300, loading of the battery piece 200, welding of the welding strip 300 and unloading of the battery piece 200 through the first mechanism 12. For the purpose of clearly illustrating the technical solution of the present invention, front, rear, left, right, upper and lower sides as shown in fig. 1 are also defined to represent front, rear, left, right, upper and lower sides of the welding apparatus 100.
As shown in fig. 1 to 4, a photovoltaic solder strip carrier assembly 131 is used for preprocessing a cell sheet 200 and a solder strip 300. The carrier assembly 131 includes a first carrier 1311 and a second carrier 1312. The first carrier 1311 is used for winding the solder ribbon 300, and the first carrier 1311 has a degree of freedom of rotation, so that it is possible to facilitate the improvement of the convenience of winding the solder ribbon 300 on the first carrier 1311. The second carrier 1312 is used for carrying the solder strips 300 detached from the first carrier 1311. The second carrier 1312 is at least partially disposed on the lower side of the first carrier 1311 in the up-down direction of the soldering apparatus 100, thereby facilitating better movement of the solder ribbon 300 detached from the first carrier 1311 onto the second carrier 1312. In the present embodiment, the first carrier 1311 has a degree of freedom of movement with respect to the second carrier 1312, and the first carrier 1311 can transfer the cut solder ribbon 300 to the second carrier 1312 by lowering, rotating, translating, or the like.
As shown in fig. 2 and 4, the first carrier 1311 has at least one operation surface 1311a, the cut solder strip 300 is disposed on the operation surface 1311a, the operation surface 1311a is provided with suction holes 1311b, and the solder strip 300 is sucked and fixed to the operation surface 1311a by forming negative pressure into the suction holes 1311 b. Through the arrangement, the adsorption of the welding strip 300 and the operation surface 1311a can be more stable through the adsorption holes 1311b, the winding stability of the welding strip 300 on the first carrier 1311 is improved, and therefore the welding stability between the battery piece 200 and the welding strip 300 is improved in the subsequent welding process of the welding strip 300 and the battery piece 200.
As shown in fig. 3, the second carrier 1312 is provided with receiving grooves 1312a extending in a predetermined direction. When at least one of the operation surfaces 1311a is in the blanking state, the suction holes 1311b cut off the suction force to the solder ribbon 300, so that the solder ribbon 300 is transferred into the accommodation groove 1312a. Wherein the feeding state refers to a state in which the at least one operation surface 1311a is capable of dropping the cut solder strip 300 into the receiving groove 1312a, and more specifically, in the present application, the feeding state refers to a state in which the at least one operation surface 1311a and the second carrier 1312 are arranged in parallel, and the operation surface 1311a is arranged toward the second carrier 1312 and is capable of dropping the cut solder strip 300 into the receiving groove 1312 a; the preset direction refers to a feeding direction, which is, in the present embodiment, a front-to-rear direction of the welding apparatus 100. Through the arrangement, the solder strip 300 can be moved from the first carrier 1311 to the accommodating groove 1312a, so that the solder strip 300 is arranged in a positive-negative staggered manner, a plurality of battery pieces 200 can be placed on the second carrier 1312 to form the battery string 21 (see fig. 1) conveniently, welding of the whole battery string 21 is achieved, and welding efficiency of the battery string 21 is further improved. In addition, through the cooperation of first carrier 1311 and second carrier 1312, not only improved and welded the area 300 efficiency of arranging, still simplified welding equipment 100's structure, only need adopt one to weld the area feedway promptly and can accomplish the book of taking 300 on first carrier 1311 of welding, and can weld the area 300 quantity according to arranging and carry out arbitrary extension, satisfied many wires and welded the demand that the area 300 of arranging constantly increases, and then make welding equipment 100's occupation space little, with low costs, it is more convenient to make to weld the area feedway change.
The first carrier 1311 may be provided with one, two, or more than two. When the first carrier 1311 is provided as one, the first carrier 1311 needs to have at least the freedom of movement in the left-right direction and the front-rear direction of the welding apparatus 100, that is, the first carrier 1311 is provided to move at least in the left-right direction so that the first carrier 1311 staggers the cut solder strips 300 into the accommodation grooves 1312a. Specifically, the first carrier 1311 is rolled while moving in the front-rear direction to complete the transfer of one set of solder ribbons 300 on the second carrier 1312, the first carrier 1311 is moved in the left-right direction to interleave the position of the first carrier 1311 with the previous position, the first carrier 1311 is rolled while moving in the front-rear direction to complete the transfer of another set of solder ribbons 300 on the second carrier 1312, and the above moving steps are repeated until the solder ribbons 300 are transferred onto the second carrier 1312, so that the positive and negative electrodes of the solder ribbons 300 on the second carrier 1312 are arranged alternately. When the first carriers 1311 are provided in two, the first carriers 1311 need to have at least the degree of freedom of movement in the front-rear direction of the soldering apparatus 100, and projections of the two first carriers 1311 in the front-rear direction do not coincide, that is, positions of the two first carriers 1311 in the left-right direction are shifted, so that the first carriers 1311 interleave the cut solder strips 300 to the accommodation grooves 1312a. It is to be understood that when the first carriers 1311 are provided in two, projections of the two first carriers 1311 in the front-rear direction may coincide if the first carriers 1311 further have a degree of freedom of movement in the left-right direction of the bonding apparatus 100. Through the above arrangement, when two first carriers 1311 are provided, the two first carriers 1311 roll in a staggered manner twice, that is, the movement of the first carriers 1311 in the left-right direction in the above steps is omitted, so that the two first carriers 1311 are staggered, and the arrangement of the positive electrode and the negative electrode of the solder strip 300 on the second carrier 1312 is completed in a staggered manner. When the number of the first carriers 1311 is two or more, it is only necessary that the solder ribbon 300 is arranged on the second carrier 1312 in a staggered manner.
In this embodiment, the accommodating groove 1312a includes a first groove set and a second groove set, both of which extend along a predetermined direction, the first groove set and the second groove set are alternately disposed, and the adjacent first groove set and the adjacent second groove set are alternately disposed, so that the positive and negative electrodes of the solder strip 300 on the second carrier 1312 are alternately arranged.
As shown in fig. 2, more specifically, first carrier 1311 includes a carrier seat 1311c, a carrier body 1311d, and a drive assembly 1311e. Wherein the operation surface 1311a is provided on the carrier body 1311 d. The carrier seat 1311c is provided at least partially on the apparatus body 11 and is capable of moving relative to the apparatus body 11. The driving component 1311e is at least partially disposed on the apparatus body 11, and the carrier seat 1311c and the apparatus body 11 are connected through the driving component 1311e, so that the driving component 1311e drives the carrier seat 1311c to move on the apparatus body 11. The carrier body 1311d is disposed on the carrier seat 1311c, and the carrier body 1311d and the carrier seat 1311c are rotatably connected, the carrier body 1311d is used for winding the solder strip 300. Specifically, drive assembly 1311e is also coupled to carrier body 1311d such that drive assembly 1311e can control carrier body 1311d to rotate.
In this embodiment, the drive assembly 1311e comprises a first drive and a second drive. The first driving member is used for connection between the apparatus body 11 and the carrier block 1311c, thereby controlling the movement of the carrier block 1311c on the apparatus body 11. The second drive member is coupled to the carrier body 1311d to control rotation of the carrier body 1311d relative to the carrier seat 1311 c. The first driving part and the second driving part can be integrally arranged, the first driving part and the second driving part can also be arranged into two independent driving parts, the first driving part can be a linear driving part such as a screw rod sliding block, a linear motor and an air cylinder, and the second driving part can be a driving part such as a motor, a synchronous belt and a synchronous belt pulley which is used for controlling a certain part to rotate around a shaft.
As an implementation manner, the carrier body 1311d may be provided with a plurality of operation surfaces 1311a, that is, the carrier body 1311d may be provided with at least two operation surfaces 1311a, at least three operation surfaces 1311a, at least four operation surfaces 1311a, and the like, where two adjacent operation surfaces 1311a are connected to each other, and a connection position of two adjacent operation surfaces 1311a forms a straight line, and the cutting of the solder ribbon 300 may be performed along the straight line, so as to obtain a group of short solder ribbon groups on each operation surface 1311a, where the operation surfaces 1311a may be provided on a side surface of the carrier body 1311d, and each operation surface 1311a has the same size, area, and shape, and the operation surfaces 1311a are parallel to the axial direction of the carrier body 1311d and extend along the axial direction of the carrier body 1311 d; since the carrier body 1311d and the carrier holder 1311c are rotatably connected, the carrier body 1311d has a rotation axis, and when the operation surface 1311a has a plurality of operation surfaces, the operation surfaces 1311a are arranged to be symmetrical with respect to the rotation axis of the carrier body 1311 d. Through the arrangement, the number of the battery pieces 200 carried by the carrier body 1311d can be increased, namely, the carrier body 1311d with the plurality of operation surfaces 1311a is used for processing the plurality of battery pieces 200, so that the working efficiency of the welding equipment 100 is improved.
As an implementation manner, the carrier body 1311d is plate-shaped, and the front and back surfaces of the carrier body 1311d are respectively provided with an operation surface 1311a. The solder strips 300 extend to the two ends of the carrier body 1311d along the axial direction of the plate-like shape with equal-distance threads, so that the solder strips 300 are uniformly distributed on the front and back operation surfaces 1311a in parallel and at equal intervals. Specifically, the driving component 1311e drives the plate-shaped carrier body 1311d to rotate, so that the solder strips 300 are respectively adsorbed and fixed on the front and back operation surfaces 1311a, which is beneficial to the arrangement of the solder strips 300.
As one implementation manner, the carrier body 1311d is cylindrical, and the carrier body 1311d is provided with a plurality of side surfaces, each of which is provided with an operation surface 1311a. The operation surfaces 1311a are arranged in central symmetry with respect to the axial direction of the carrier body 1311d, and each operation surface 1311a is parallel to the axial direction of the carrier body 1311 d; and two adjacent operation surfaces 1311a are connected with each other, for example, the shape of the carrier body 1311d may be a straight triangular prism, a straight quadrangular prism, a straight pentagonal prism, a straight hexagonal prism, 8230, a straight 8230and a straight n-shaped prism, of course, in order that the length of the solder strip 300 on the operation surfaces 1311a meets the requirement of the battery sheet 200, the size and the shape of the operation surface 1311a of the carrier body 1311d are reasonably selected, and preferably, the carrier body 1311d may be a straight triangular prism, a straight quadrangular prism, a straight pentagonal prism, a straight hexagonal prism or a straight hepta-prism. Specifically, the optimum size and shape of the carrier body 1311d may be determined according to the length of the battery string 21. The solder strips 300 extend to the two ends of the carrier body 1311d in the axial direction of the carrier body 1311d in the form of equidistant threads, so that the solder strips 300 are uniformly distributed on the operation surface 1311a of the carrier body 1311d in parallel and at equal intervals. Specifically, the driving component 1311e drives the cylindrical carrier body 1311d to rotate, so that the solder strips 300 are respectively adsorbed and fixed on several side surfaces of the carrier body 1311d, which is beneficial to the layout of the solder strips 300.
With the above two implementation manners, when the carrier body 1311d uses the rotation axis as the rotation center, each operation surface 1311a rotates along with the carrier body 1311d, so that the operation surfaces 1311a can be switched with each other.
It will be appreciated that by replacing carrier body 1311d, or otherwise adjusting the number of strips 300 wound on carrier body 1311d, the spacing or number of groups of strips on carrier body 1311d may be adjusted for different process requirements, thereby improving the adjustability and expandability of welding apparatus 100.
As shown in fig. 3 and 4, as one implementation, the receiving groove 1312a is provided as an adsorption groove, and when the solder ribbon 300 is positioned in the receiving groove 1312a, the solder ribbon 300 is adsorbed into the receiving groove 1312a by forming a negative pressure into the receiving groove 1312a. Specifically, when the first carrier 1311 moves to the upper side of the second carrier 1312, the suction holes 1311b on the one operation surface 1311a of the first carrier 1311 cut off the suction force to the solder ribbon 300, so that the solder ribbon 300 is detached from the operation surface 1311a and drops into the receiving grooves 1312a of the second carrier 1312. At this time, a negative pressure is formed in the receiving groove 1312a to closely attach the solder ribbon 300 to the receiving groove 1312a. Through the above arrangement, the accuracy rate of the welding strip 300 falling in the accommodating groove 1312a can be improved through the adsorption force of the accommodating groove 1312a, a better welding basis is provided for the welding of the subsequent battery piece 200 and the welding strip 300, and the improvement of the quality of the battery piece 200 is facilitated.
In the present embodiment, the second carrier 1312 has a plate shape, and the receiving grooves 1312a are arranged on the second carrier 1312 at equal intervals. With the above arrangement, the second carrier 1312 can be easily transported on the welding apparatus 100, thereby facilitating welding of the battery cell 200 and the welding strip 300. In addition, through the setting, equidistant arranging of holding tank 1312a can make and be equidistant and crisscross arranging between solder strip 300 to be favorable to improving battery piece 200's quality.
As an implementation manner, in order to improve the stability of the battery piece 200 wound on the first carrier 1311, the first carrier 1311 is provided with a groove 1311f, the groove 1311f is disposed on the operation surface 1311a, the adjacent grooves 1311f on the operation surface 1311a are parallel to each other and are equidistant, and the adsorption holes 1311b are disposed in the groove 1311 f. Specifically, the groove 1311f is provided on the surface of the first carrier 1311, and is configured to accommodate the solder strip 300 and limit the solder strip 300, so as to prevent the solder strip 300 from displacing when being wound on the first carrier 1311, and particularly prevent the solder strip 300 from being short after being cut, thereby improving the limiting effect on the solder strip 300. Specifically, the tanks 1311f are opened on the surface of the first carrier 1311 and pass through each of the operation surfaces 1311a, and the tanks 1311f, in which the setting paths pass through the operation surfaces 1311a, are arranged in parallel and at equal intervals to each other, in other words, the tanks 1311f on the same operation surface 1311a are independent, parallel and at equal intervals to each other. In the present embodiment, the ratio of the interval between the grooves 1311f to the interval between the receiving grooves 1312a is set to 2, that is, the interval between the grooves 1311f is twice the interval between the receiving grooves 1312a, thereby facilitating control of the positive and negative electrode staggered arrangement of the solder ribbon 300.
In one embodiment, the slots 1311f of the first carrier 1311 are arranged in a continuous spiral, that is, the slots 1311f extend to both ends of the first carrier 1311 along the axial direction of the rotation shaft of the first carrier 1311 in an equidistant spiral shape, so that the solder strip 300 is wound around the first carrier 1311 along the slots 1311f, such that the solder strips 300 passing through the operation surface 1311a are parallel to each other and are spaced at equal intervals.
It is worth noting that the absorption holes 1311b are located in the groove 1311f, and in one embodiment, the absorption holes 1311b are all disposed in the groove 1311f, so that the solder strip 300 is stably absorbed in the groove 1311f through the absorption holes 1311 b.
Wherein, the extending direction of at least part of the groove 1311f is consistent with the preset direction. That is, at least part of the groove 1311f extends in the same direction as the feeding direction. Specifically, when the first carrier 1311 is located on the upper side of the second carrier 1312, at least one operation surface 1311a of the first carrier 1311 is in a horizontal arrangement, which in this application means that the operation surface 1311a is arranged perpendicular to the up-down direction of the soldering apparatus 100, and at this time, the extending direction of the groove 1311f on the operation surface 1311a described above coincides with the preset direction. With the above arrangement, the solder ribbon 300 can be moved into the receiving groove 1312a better, thereby facilitating subsequent welding between the solder ribbon 300 and the battery cell 200.
As one implementation manner, the left and right ends of the first carrier 1311 in the length direction are provided with clamping pieces (not shown in the figure) for clamping the head and tail ends of the solder strip 300. Here, the length direction of the first carrier 1311 refers to the left-right direction of the welding apparatus 100. The clamping members are used to clamp the end of the solder strip 300 so that the solder strip 300 can be stably wound on the first carrier 1311. The clamping pieces comprise clamping heads, the inside of the first carrier 1311 is hollow, through holes are formed in the first carrier 1311, the clamping heads penetrate through the first carrier 1311 through the through holes, the clamping heads are used for clamping the welding strip 300 wound on the first carrier 1311, the clamping pieces are provided with two groups, the two groups of clamping pieces are respectively arranged at the left end and the right end of the side face of the first carrier 1311, correspondingly, the first carrier 1311 is provided with two through holes corresponding to the clamping heads, and the two groups of clamping pieces respectively clamp one end and the other end of the welding strip 300; in one embodiment, the clamping piece adopts a pneumatic clamp, and the opening or the closing of the clamping head is controlled through pneumatics; it is noted that the position of the air jig is set on a straight line formed between the operation surfaces 1311a and 1311a so that the length of the solder ribbon 300 on each operation surface 1311a is equal.
As shown in fig. 1, the first mechanism 12 includes a cutting assembly 121, an upper plate assembly 122, a heating assembly 123, and a lower plate assembly (not shown). The cutting assembly 121, the upper blade assembly 122, the heating assembly 123, and the lower blade assembly are sequentially arranged from front to rear in the front-rear direction of the welding apparatus 100. Wherein, the cutting assembly 121 is used for cutting the solder strip 300; the upper assembly 122 is used for placing the battery piece 200 on the second carrier 1312; the heating assembly 123 is used for heating the battery piece 200 to weld the welding strip 300 on the battery piece 200 and form the battery string 21; the lower blade assembly is used to remove the battery string 21 from the second mechanism 13. With the above arrangement, a cutting zone, an upper zone, a heating zone, and a lower zone are formed at corresponding positions of the cutting assembly 121, the upper zone 122, the heating assembly 123, and the lower zone. In one embodiment, the cutting assembly 121, the upper blade assembly 122, the heating assembly 123, and the lower blade assembly are all positioned above the second mechanism 13 to facilitate performing the corresponding operations on the second mechanism 13. It can be understood that the arrangement of the cutting assembly 121, the upper plate assembly 122, the heating assembly 123 and the lower plate assembly can be adjusted according to the change of the welding process of the battery piece 200 and the welding strip 300, and it is only necessary to form the cutting region, the upper plate region, the heating region and the lower plate region at different positions.
As shown in fig. 1 to 4, the second mechanism 13 includes at least one carrier assembly 131, the carrier assembly 131 includes a second carrier 1312 and at least one first carrier 1311, the first carrier 1311 and the second carrier 1312 each have freedom of movement, such that the first carrier 1311 includes a cutting station and a blanking station, and when the first carrier 1311 is at the cutting station, the cutting assembly 121 cuts the solder strip 300 on the first carrier 1311; when the first carrier 1311 is at the blanking station, the first carrier 1311 transfers the cut solder strip 300 to the second carrier 1312; and enables the second carrier 1312 to move and form the first, second, third and fourth stations at the first carrier 1311, the upper blade assembly 122, the heating assembly 123 and the lower blade assembly. Wherein the freedom of movement of the first and second carriers 1311 and 1312 means that the first and second carriers 1311 and 1312 can move in a front-rear direction, an up-down direction, and/or a left-right direction of the welding apparatus 100, and more particularly, the second carrier 1312 can move at least in the front-rear direction of the welding apparatus 100 so that the second carrier 1312 can move between the first, second, third, and fourth stations. In this embodiment, the first carrier 1311 further includes a winding station, and when the first carrier 1311 is in the winding station, the solder strip 300 is wound on the first carrier 1311, and then the first carrier 1311 enters the cutting station again.
When the second carrier 1312 is at the first station, the first carrier 1311 transfers the cut solder ribbon 300 into the receiving groove 1312a of the second carrier 1312; when the second carrier 1312 is at the second station, the chip mounting assembly 122 is used for placing the battery chips 200 on the second carrier 1312; when the second carrier 1312 is at the third station, the heating assembly 123 heats the battery piece 200, so that the battery piece 200 and the solder strip 300 are welded, and the battery string 21 is formed; when the second carrier 1312 is at the fourth station, the lower blade assembly removes the battery string 21. Through the arrangement, different processing can be carried out on the battery piece 200 and the welding strip 300 at different stations.
In one embodiment, the cutting assembly 121 may employ a laser cutter, and the welding strip 300 is cut by the laser cutter to obtain a welding strip group suitable for welding on the battery piece 200. The loading module 122 is configured as a first robot to load the battery cells 200, and further, an end of the first robot is provided with a suction unit capable of sucking the battery cells 200 by vacuum suction, thereby driving the battery cells 200 to move and place the battery cells on the second carrier 1312. The heating assembly 123 may heat the battery piece 200 by using an infrared heater, and the infrared heater acts on the battery piece 200 downwards along the up-down direction of the welding device 100 to heat the battery piece 200 and the welding strip 300, so that the welding strip 300 is heated and welded on the battery piece 200 to form the battery string 21. The lower piece assembly takes the form of a second manipulator, and the battery string 21 after being heated and welded is grabbed and taken down. Wherein, the laser cutting of the cutting assembly 121, the cell sheet 200 loading of the first robot arm, and the cell string 21 unloading of the second robot arm need to be matched with a vision system, so as to be able to make proper position adjustment with respect to the position of the cell sheet 200, for example, the arrangement direction of the cell sheet 200 on the second carrier 1312 can be adjusted by rotating the cell sheet 200 by the first robot arm. In the present application, the heating of the infrared heater may or may not be coordinated with the vision system.
As shown in fig. 5, as one implementation manner, the heating assembly 123 further includes a wind power module 1231, the wind power module 1231 is disposed on an upper side of the heating assembly 123 in an up-down direction of the welding apparatus 100, and the wind power module 1231 transfers heat of the heating assembly 123 to the battery cell 200. Wherein the wind power module 1231 may be configured as a fan. The wind module 1231 and the heating assembly 123 are integrally provided, i.e., the wind module 1231 and the heating assembly 123 may be provided as an integrated piece, thereby facilitating the simplification of the structure of the first mechanism 12. Along the up-down direction of the welding device 100, the wind power module 1231 is at least partially disposed on the upper side of the heating assembly 123, so that the wind power module 1221 can transfer the heat of the heating assembly 122 to the battery cell 200 more quickly, thereby improving the welding efficiency of the battery cell 200 and the welding strip 300, and further improving the working efficiency of the welding device 100. It is understood that the wind power module 1231 is only one preferred solution, and the wind power module 1231 may not be provided in the actual operation of the welding apparatus 100, so as to reduce the cost of the welding apparatus 100.
As shown in fig. 6, a welding method includes:
s1: winding the solder ribbon 300 around the first carrier 1311, and the cutting assembly 121 cutting the solder ribbon 300 on the operation surface 1311a to form a plurality of groups of solder ribbon groups;
s2: transferring the solder ribbon group on each work plane 1311a into the accommodation groove 1312a of the second carrier 1312 by rotation and movement of the first carrier 1311;
s3: placing the battery piece 200 on a second carrier 1312 through the upper piece assembly 122;
s4: heating the battery piece 200 and/or the welding strip 300 through the heating assembly 123 to weld the battery piece 200 and the welding strip 300 and form the battery string 21;
s5: the battery string 21 is removed by the lower blade assembly.
Specifically, in step S1, the suction holes 1311b of the first carrier 1311 place the solder strip 300 on the operation surface 1311a by suction, and the suction holes 1311b are evacuated by an air pump or the like, so that the solder strip 300 is sucked and fixed by forming a negative pressure into the suction holes 1311 b. Wherein the solder ribbon 300 may be supplied to the first carrier 1311 by an existing solder ribbon supply device, so that the solder ribbon 300 is wound around the first carrier 1311 by the rotation of the first carrier 1311; the welding strip feeding device can be a winch and the like. More specifically, one end of the solder strip 300 is fixed to a holder at one end of the first carrier 1311, and after the solder strip 300 is wound around the first carrier 1311, the other end of the solder strip 300 is fixed to a holder at the other end of the first carrier 1311. The existence of the groove body 1311f arranged on the operation surface 1311a can limit the solder strip 300, so that the arrangement of the solder strip 300 is more accurate, and the quality requirement of the cell piece 200 is met. Finally, a plurality of solder ribbon groups are formed by rotating the first carrier 1311 to align the joint of two adjacent operative surfaces 1311a with the cutting assembly 121 so that the cutting assembly 121 cuts the solder ribbon 300.
In step S2, the first carrier 1311 is moved to the upper side of the second carrier 1312, and at least one operation surface 1311a of the first carrier 1311 and the second carrier 1312 are arranged in parallel, and at this time, the first carrier 1311 is lowered, and the suction holes 1311b on the operation surface 1311a break the suction force to the solder tape 300, so that the solder tape 300 is separated from the groove 1311f and falls into the accommodation groove 1312a of the second carrier 1312. Due to the negative pressure formed in the accommodating groove 1312a, the solder strip 300 can stably fall into the accommodating groove 1312a, so that the solder strip 300 has a staggered arrangement of positive and negative electrodes. At this point, the second carrier 1312 is at the first station. In one embodiment, the first carrier 1311 has a plurality of continuous operation surfaces 1311a, and the solder ribbon on each operation surface 1311a can be sequentially transferred into the accommodation grooves 1312a by rotation and movement of the first carrier 1311.
In step S3, the second carrier 1312 moves from the first station to the second station, and the chip mounting assembly 122 sequentially places the plurality of battery chips 200 on the second carrier 1312 by means of suction, so that the subsequent plurality of battery chips 200 and the solder strips 300 are soldered and form the battery string 21.
In step S4, the second carrier 1312 moves from the second station to the third station, the heating assembly 123 heats the battery piece 200 and/or the solder strip 300, the solder strip 300 on the second carrier 1312 is welded on the battery piece 200, and the battery string 21 is formed; it should be noted that the solder strip 300 has a tin layer structure on the surface thereof, and the solder strip 300 can be soldered on the battery cell 200 after the tin layer structure is melted by heating. Preferably, the length of the heating assembly 123 in the front-back direction of the welding device 100 is the same as the length of the second carrier 1312 in the front-back direction of the welding device 100, so as to facilitate uniform heating of the battery string 21 by the heating assembly 123, so that the battery string 21 is heated uniformly, and the quality and the service life of the battery string 21 are improved.
In step S5, the second carrier 1312 moves from the third station to the fourth station, the lower blade assembly sucks the battery string 21 on the second carrier 1312 by suction, and at this time, the suction force of the accommodating grooves 1312a to the battery string 21 is cut off by closing the air pump or the like, so that the lower blade assembly can remove the battery string 21 from the second carrier 1312.
As one implementation, the first mechanism 12 further includes a transmission component. The movement of the second carrier 1312 between the first, second, third and fourth stations may be accomplished by a transfer assembly. The conveying direction of the conveying assembly is the feeding direction. After the processing of the primary battery string 21 is completed, the second carrier 1312 is returned to the first station by the conveying assembly to wait for the next processing of the battery string 21.
It will be appreciated that modifications and variations are possible to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (10)
1. A photovoltaic solder ribbon carrier assembly for pre-processing of cell pieces and solder ribbons, the carrier assembly comprising:
a first carrier for winding the solder ribbon, the first carrier having a rotational degree of freedom;
a second carrier disposed at least partially on an underside of the first carrier, the first carrier having freedom of movement relative to the second carrier;
the first carrier is provided with at least one operation surface, the cut welding strip is distributed on the operation surface, the operation surface is provided with an adsorption hole, and negative pressure is formed in the adsorption hole so that the welding strip is adsorbed and fixed on the operation surface;
the second carrier is provided with an accommodating groove extending along a preset direction;
when at least one of the operation surfaces is in a blanking state, the adsorption hole breaks the adsorption force of the welding strip, so that the welding strip is transferred into the accommodating groove, wherein the blanking state refers to a state that the at least one operation surface can enable the cut welding strip to fall into the accommodating groove.
2. The photovoltaic solder ribbon carrier assembly of claim 1, wherein the first carrier is configured as one, the first carrier configured to move at least in a left-right direction to stagger placement of the cut solder ribbon into the receiving slot.
3. The photovoltaic solder strip carrier assembly of claim 1, wherein the number of the first carriers is two, and the two first carriers are staggered in the left-right direction, so that the first carriers can stagger the cut solder strips into the accommodating grooves.
4. The photovoltaic solder ribbon carrier assembly of any one of claims 1 to 3, wherein the receiving groove includes a first groove set and a second groove set, the first groove set and the second groove set each extending along the predetermined direction, the first groove set and the second groove set being disposed at intervals, and adjacent first groove set and second groove set being disposed at intervals.
5. The photovoltaic solder ribbon carrier assembly according to any one of claims 1 to 3, wherein the holding groove is configured as an adsorption groove, and when the solder ribbon is located in the holding groove, the solder ribbon is adsorbed into the holding groove by forming a negative pressure into the holding groove.
6. The photovoltaic solder strip carrier assembly according to any one of claims 1 to 3, wherein the first carrier is provided with groove bodies, the groove bodies are arranged on the operating surface, adjacent groove bodies on the operating surface are parallel and equidistant to each other, and the adsorption holes are arranged in the groove bodies.
7. The photovoltaic solder strip carrier assembly according to any one of claims 1 to 3, wherein the first carrier is provided with clamping members at both left and right ends in a length direction, and the clamping members are used for clamping the head and tail ends of the solder strip.
8. A welding apparatus, characterized in that the welding apparatus comprises:
a first mechanism comprising a cutting assembly, an upper blade assembly, a heating assembly, and a lower blade assembly;
a second mechanism comprising the photovoltaic solder ribbon carrier assembly of any one of claims 1 to 7, the carrier assembly comprising the second carrier and at least one of the first carriers, the first and second carriers each having freedom of movement;
the first carrier comprises a cutting station and a blanking station, and when the first carrier is positioned at the cutting station, the cutting assembly cuts the welding strip on the first carrier; when the first carrier is positioned at the blanking station, the first carrier transfers the cut welding strip to the second carrier;
the second carrier moves among the first carrier, the upper sheet assembly, the heating assembly and the lower sheet assembly and is provided with a first station, a second station, a third station and a fourth station, and when the second carrier is positioned at the first station, the first carrier transfers the cut solder strips into the accommodating grooves of the second carrier; when the second carrier is at the second station, the chip loading assembly is used for placing the battery chips on the second carrier; when the second carrier is at the third station, the heating assembly heats the battery plate to enable the battery plate and the welding strip to be welded and form a battery string; when the second carrier is at the fourth station, the lower sheet assembly removes the battery string.
9. The welding apparatus of claim 8, wherein the heating assembly further comprises a wind module disposed on an upper side of the heating assembly, the wind module transferring heat from the heating assembly to the battery plate.
10. A welding method applied to the welding apparatus according to any one of claims 8 to 9, characterized in that the welding method comprises:
winding the solder strip on the first carrier, the cutting assembly cutting the solder strip on the operative surface to form groups of solder strip groups;
transferring the solder ribbon group on each of the work surfaces into the receiving grooves of the second carrier by rotation and movement of the first carrier;
placing the battery piece on the second carrier through the upper piece assembly;
heating the battery plate and the welding strips through the heating assembly to weld the battery plate and the welding strips and form the battery string;
and removing the battery string through the lower piece assembly.
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| CN202211546431.9A CN115555864B (en) | 2022-12-05 | 2022-12-05 | Photovoltaic solder strip carrier assembly, welding equipment and welding method |
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