WO2019242663A1 - Appareil de soudage et procédé d'assemblage d'une cellule solaire - Google Patents

Appareil de soudage et procédé d'assemblage d'une cellule solaire Download PDF

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Publication number
WO2019242663A1
WO2019242663A1 PCT/CN2019/091971 CN2019091971W WO2019242663A1 WO 2019242663 A1 WO2019242663 A1 WO 2019242663A1 CN 2019091971 W CN2019091971 W CN 2019091971W WO 2019242663 A1 WO2019242663 A1 WO 2019242663A1
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WO
WIPO (PCT)
Prior art keywords
component
lifting
translation
pressure column
assembly
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Application number
PCT/CN2019/091971
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English (en)
Chinese (zh)
Inventor
许明现
Original Assignee
君泰创新（北京）科技有限公司
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Publication of WO2019242663A1 publication Critical patent/WO2019242663A1/fr

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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
    • 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

Definitions

  • the present application relates to the technical field of solar cells, and in particular, to a welding device and a method for assembling a solar cell.
  • the assembly process of a solar cell including a plurality of photovoltaic chips arranged in an array is as follows: first, the photovoltaic chips in the same column are welded and connected to form a battery string; then, the battery strings are arranged in a row on the substrate of the solar cell; Then, the aforementioned substrate is transported to a special welding equipment for welding the busbar.
  • This application provides a welding equipment, including a frame, a lead-out device, and a welding device;
  • the lead-out device is installed on the frame, and is used to bend a busbar, so that the busbar forms a convex portion and a flat portion on both sides of the convex portion; wherein the convex portion is separated by Open the tile sections on both sides;
  • the welding device is installed on the frame and is used for welding and connecting the drainage belt and the tile portion.
  • the welding device further includes a first translation component
  • the first translation component is installed on the rack
  • the welding device is mounted on the first translation assembly and moves in a first horizontal direction under the driving of the first translation assembly.
  • the welding equipment further includes a first lifting component
  • the first lifting component is installed on the first translation component, and the welding device is installed on the first lifting component; the first lifting component is used to drive the welding device to move in a vertical direction; or ,
  • the welding equipment further includes a second translation assembly
  • the second translation assembly is installed on the first translation assembly, and the welding device is installed on the second translation assembly; the second translation assembly is used to drive the welding device to move in a second horizontal direction;
  • the second horizontal direction is perpendicular to the first horizontal direction.
  • the welding equipment further includes a third translation component, a second lifting component, and a busbar supply device;
  • the third translation component is installed on the rack
  • the second lifting component is mounted on the third translation component, and moves in the first horizontal direction under the driving of the third translation component;
  • the busbar supply device is mounted on the second lifting assembly and moves in a vertical direction under the driving of the second lifting assembly.
  • the busbar supply device includes a mounting plate, a tape coil mounting mechanism, and a braking mechanism
  • the mounting plate is mounted on the second lifting component
  • the tape roll mounting mechanism includes a tape roll rotating shaft and a tape roll mounting portion
  • the reel rotating shaft is rotatably provided on the mounting plate; the reel mounting portion is fixed on the reel rotating shaft;
  • the braking mechanism includes a friction portion, a friction braking portion, and a driving portion;
  • the friction portion is fixedly connected to the reel rotating shaft; the driving portion drives the friction braking portion to press against the friction portion.
  • the driving part is a pulling rope
  • Two ends of the pulling rope are respectively fixed on the mounting plate;
  • the friction braking portion is fixed on the pulling rope, and is always pressed against the friction portion under the pulling action of the pulling rope.
  • the extraction device includes an intermediate pressure column and two side pressure columns; the two side pressure columns include a first side pressure column and a second side pressure column;
  • the intermediate pressure column is configured to press against the first surface of the busbar
  • the first side pressure column and the second side pressure column are located on both sides of the intermediate pressure column and are respectively used to press against the second surface of the busbar;
  • the welding equipment includes a driving component
  • the driving member is configured to drive the intermediate pressure column or the two side pressure columns to move in a third direction, so that the busbar pressed by the intermediate pressure column and the side pressure columns is bent, The raised portion and the tiled portion are formed. .
  • the driving component includes:
  • a third lifting assembly for driving the first side pressure column to move in a third direction
  • a fourth lifting assembly for driving the second side pressure column to move in a third direction
  • the third lifting component and the fourth lifting component are both disposed on the frame.
  • the third lifting component is configured to drive the first side pressure column to move diagonally below a side of the intermediate pressure column;
  • the fourth lifting component is used to drive the second side pressure column to move diagonally below the other side of the middle pressure column.
  • the driving component further includes a fifth lifting assembly for driving the intermediate pressure column to move in a third direction;
  • the fifth lifting assembly is disposed between the frame and the intermediate pressure column.
  • the welding device further includes a fourth translation component, a fifth translation component, and a sixth translation component;
  • the fourth translation assembly is disposed on the frame, and the fifth elevation assembly is disposed on the fourth translation assembly; the fourth translation assembly is used to drive the fifth translation assembly along a second horizontal direction mobile;
  • the fifth translation component is disposed on the frame, and the third lifting component is disposed on the fifth translation component; the fifth translation component is used to drive the third lifting component in a second horizontal direction mobile;
  • the sixth translation component is disposed on the frame; the fourth lifting component is disposed on the sixth translation component; the sixth translation component is used to drive the fourth lifting component along a second horizontal direction mobile.
  • the welding device further includes a first cantilever, a second cantilever, and a third cantilever;
  • a first cantilever is disposed between the fifth lifting component and the intermediate pressure column;
  • a second cantilever is disposed between the third lifting component and the first side pressure column
  • a third cantilever is disposed between the fourth lifting assembly and the second side pressure column.
  • the third direction is a vertical direction.
  • the welding equipment further includes a sixth lifting component, a seventh translation component, a suction cup, and a welding floor;
  • the sixth lifting component and the seventh translation component are both installed on the frame
  • the suction cup is hung on the lower side of the sixth lifting assembly, is connected with the lifting member of the sixth lifting assembly through a hinge shaft, and moves in a vertical direction under the driving of the sixth lifting assembly;
  • the welding bottom plate is mounted on the seventh translation component and moves in the second horizontal direction under the driving of the seventh translation component.
  • the welding device further includes a bracket
  • the bracket is disposed between the suction cup and the sixth lifting component
  • the bracket includes a lifting arm and a mounting arm; an extension direction of the lifting arm is different from an extending direction of the mounting arm;
  • the sixth lifting component is hingedly connected to the lifting arm through the hinge shaft; the suction cup is fixed on the mounting arm;
  • the working surface of the suction cup is inclined downward toward the outer peripheral side of the frame.
  • the welding device further includes a setting driving component
  • the driving component is disposed between the frame and the sixth lifting component, and is used to drive the sixth lifting component to move in a second horizontal direction.
  • This application provides a method for assembling a solar cell, including:
  • busbar Laying a busbar; wherein the busbar includes a raised portion and tile portions on both sides of the raised portion, and the tile portions on both sides of the raised portion are covered by the raised portion
  • the raised portion is cut off, so that the raised portion forms a terminal connected to the tile portion on both sides, respectively.
  • the busbar is bent to form the raised portion and the tiled portion.
  • the lead-out device in the process of laying the welding busbar, is directly used to form the busbar to form a convex portion and a flat portion located on both sides of the convex portion; in the subsequent assembly process of the solar cell, the convex After the rising portion passes through the lead-out hole of the solar cell back plate, it is cut to form a terminal connected to the tile.
  • the problem that the busbar needs to be cut, bent and laid accurately during processing is avoided, the cost of laying the busbar during the production of solar cells is reduced, and the production efficiency is improved.
  • the busbar is directly bent to form a convex portion, and the convex portion is cut to form a terminal after the backboard is installed.
  • This processing method not only changes the cutting, bending, and installation order of the busbar, but also avoids the need to accurately locate adjacent busbars during processing, and also prevents the terminals of the busbar from passing through the exit holes. Problems can greatly improve production efficiency.
  • FIG. 1 is a flowchart of a method for assembling a solar cell according to an embodiment
  • FIG. 2 is a schematic structural diagram of a bus bar after being bent in the embodiment
  • FIG. 3 is an isometric view of a partial structure of a welding equipment provided by an embodiment
  • FIG. 4 is an enlarged schematic view of a region in FIG. 3; FIG.
  • FIG. 6 is an isometric view of a busbar supply device in the welding equipment of the embodiment.
  • FIG. 7 is an isometric view of a pressing mechanism of the busbar supply device
  • FIG. 8 is a front view of another part of the structure of the welding equipment of the embodiment.
  • 01-substrate, 02-photovoltaic chip, 03- drainage belt, 04-bus belt, 041- convex portion, 042-tiling portion, 11-rack, 12-bus belt supply device 121- mounting plate, 122-reel rotating shaft, 123-guided driving mechanism, 1231-active guide wheel, 1232-powered part, 1233-driven guide wheel, 1234-guide guide wheel, 124-cutting mechanism, 1241-moving cutter section , 1242-cutting knife section, 1243-reciprocating driving section, 125-pressing mechanism, 1251-pressing base, 1252-pressing spring, 1253-pressing roller, 1254-reciprocating lever, 1255-pressing section, 1256-limiting pin, A-friction part, B-friction braking part, C-drive part, 126-drawing rope, 13-welding device, 14-lead device, 141-intermediate pressure column, 142-first side Pressure column, 143- second side pressure column,
  • this embodiment provides a method for assembling a solar cell.
  • the foregoing assembling method includes steps S101-S104.
  • Laying the busbar refers to laying the busbar on the substrate of the solar cell, so that the busbar can be welded and connected to the drainage bar already laid on the substrate and soldered to the photovoltaic chip.
  • the busbar 04 laid in the embodiment of the present application includes a raised portion 041 and a flat portion 042; wherein the raised portion 041 is located between the two tile portions 042 and separates the two tile portions 042. .
  • the aforementioned separation means that two adjacent tile portions 042 do not directly contact each other, but are connected together by a convex portion 041.
  • the busbar 04 can be bent to form the above-mentioned raised portion 041 and flat-tiled portion 042 during the laying process, or it can be bent before forming to form the aforementioned raised portion 041 and flat-tiled portion. 042.
  • the drainage tape is a conductive member connected to the photovoltaic chip by welding, and is used to connect the photovoltaic chip in series.
  • the drainage strip is connected to the photovoltaic chip by welding, so that multiple photovoltaic chips are connected to form a battery string; after the battery string is transferred to the substrate of the solar cell, the drainage strip and the tile in the bus strip 04 042 Welded connection.
  • a backing plate is laid on the side of the busing belt 04 where the protruding portion 041 is provided; this backing plate is arranged on the back of the solar cell module and is used to support and protect the photovoltaic chips and other components in the solar cell. .
  • a lead-out hole is provided on the back plate, and the lead-out hole is used to lead out the terminal of the busbar 04.
  • the convex portion 041 of the busbar 04 passes through the lead-out hole on the back plate, and the free end is exposed on the back of the back plate.
  • the core power generation components of the solar cell have been assembled, and then lead-out components such as junction boxes need to be installed on the backplane side.
  • lead-out components such as junction boxes need to be installed on the backplane side.
  • bus belt 04 may also be welded to a part of the drainage belt 03 before being bent to form the aforementioned raised portion 041.
  • the embodiment of the present application also provides a welding device applied to the assembly of a solar cell; this welding device integrates a busbar bending process and a welding process to improve the assembly of the solar cell effectiveness.
  • the welding equipment described below is only an optional equipment for realizing the assembly of solar cells.
  • the bending operation of the busbar 04 may use an independent device, that is, the busbar 04 is first bent. 2. After forming the raised portion 041, it is placed on the welding equipment for welding operation.
  • the welding equipment provided in the embodiment of the present application includes a frame 11, a feeding mechanism, a welding device 13, and a lead-out device 14.
  • the aforementioned loading mechanism, welding device 13 and lead-out device 14 are all arranged on the frame 11, and the frame 11 is used as a positioning reference and a supporting member to complete corresponding operations.
  • the frame 11 is provided with two sets of the aforementioned welding devices 13, lead-out devices 14, and corresponding components; in order to reduce the number of the drawings, only one of each component is indicated in the drawings.
  • the feeding mechanism includes a conveying belt 31 and a conveying belt wheel 32 driving the conveying belt 31; the conveying belt wheel 32 is installed on the frame 11 and can rotate relative to the frame 11; the conveying belt 31 is driven by a plurality of corresponding conveying belt wheels 32 tensions to be able to receive the substrate 01 of the solar cell.
  • a plurality of battery strings battery strings are formed by the drainage tape 03 connected to the photovoltaic chip 02
  • the substrate 01 is transferred to the welding equipment by the conveyor belt 31 for subsequent welding operations.
  • the welding device 13 is arranged on the frame 11 and is used to realize the welding connection of the flat portion 042 in the drainage belt 03 and the bus belt 04.
  • the welding equipment includes a first translation assembly 16; the first translation assembly 16 is installed on the frame 11; the welding device 13 is installed on the first translation assembly 16, and can be driven along the first translation assembly 16 under the driving of the first translation assembly 16.
  • the horizontal direction moves relative to the rack 11.
  • the first horizontal direction is the direction in which the conveying skin 31 transports the solar cell substrate 01. It should be noted that, in practical applications, according to the different arrangement angles of the photovoltaic chip 02 on the substrate 01, And the placement angle of the drainage belt and the bus belt 04 that need to be welded is different, the first horizontal direction may be other directions, and the application may not be particularly limited.
  • the welding device 13 can be moved relative to the frame 11, the welding device 13 can be used for welding operations of a plurality of tile portions 042 and corresponding drainage belts 03.
  • a welding device 13 is used to connect the busbar by welding. 01 and drainage belt 03; since the raised portion 041 is located on the trajectory of the welding device following the first translation component 16 after the fabrication is completed, the welding device 13 may hit the protrusion during the movement of the first translation component 16 Department 041.
  • the welding device may further include the welding device 13 being moved relative to the first translation component 16 when the welding device 13 is moved near the convex portion 041. A mechanism that moves relatively to bypass the raised portion 041.
  • a component that realizes the movement of the welding device 13 relative to the first translation assembly 16 may be a first lifting assembly 33; the first lifting assembly 33 is installed on the first translation assembly 16 and may follow the first translation assembly 16 moves in the first horizontal direction; the welding device 13 is mounted on the first lifting assembly 33 and can move in the vertical direction under the driving of the first lifting assembly 33.
  • the first lifting component 33 drives the welding device 13 to raise a certain height, so that the welding device 13 bypasses the convex portion 041; After 041, the first lifting component 33 drives the welding device 13 down to a position where it abuts on the tile 04 042 of the busbar 04.
  • the component that realizes the movement of the welding device 13 relative to the first translation assembly 16 may also be a second translation assembly.
  • the second translation assembly is installed on the first translation assembly 16 and the welding device is installed on the second translation assembly; the second translation assembly can move along the first horizontal direction with the first translation assembly 16 and can drive the welding device 13 along The second horizontal direction moves; in specific applications, the second horizontal direction is preferably perpendicular to the first horizontal direction; of course, the second horizontal direction may also be other directions having a certain angle with the first horizontal direction.
  • the second translation component drives the welding device 13 to move a certain distance in the second horizontal direction, bypassing the projection. After passing through the protruding portion 041, the second translation assembly moves in the opposite direction to move the welding device 13 to a position abutting on the bus 04.
  • the welding machine device may not be provided with the aforementioned first A lifting component 33 or a second translation component.
  • the welding equipment 3 may not be provided with the first translation assembly 16, but may be provided with a corresponding welding device 13 for each tile portion 042 in the busbar 04.
  • the extraction device 14 includes an intermediate pressure column 141 and two side pressure columns.
  • the middle pressure column 141 is used to press the first surface of the bus belt 04, and the two side pressure columns are used to press the second surface of the bus belt 04; the aforementioned first surface is the surface of the bus belt 04 facing the substrate 01, and the second The surface is the surface of the busbar 04 facing away from the substrate 01 (or understood as the surface away from the substrate 01).
  • the two side pressure columns are a first side pressure column 142 and a second side pressure column 143, and the first side pressure column 142 and the second side pressure column 143 are located on both sides of the middle pressure column 141, respectively, so as to be pressed against the middle.
  • the welding equipment also includes drive components.
  • the driving component is used to drive the middle pressure column 141 and the two side pressure columns (that is, the first side pressure column 142 and the second side pressure column 143) to move relatively in the third direction, so that the middle pressure column 141 and the two side pressure columns
  • the pressed busbar forms a raised portion 041.
  • the driving component to realize the relative movement of the intermediate pressure column 141 and the two side pressure columns along the third direction, so as to form the convex portion 041 of the busbar.
  • the intermediate pressure column 141 is fixed, and the driving member drives the first side pressure column 142 and the second side pressure column 143 to move away from the intermediate pressure column 141 in the third direction.
  • the first side pressure column 142 and the second side pressure column 143 are fixed, and the driving member drives the middle pressure column 141 to move away from the first side pressure column 142 and the second side pressure column 143 in the third direction.
  • the driving member moves the middle pressure column 141, the first side pressure column 142, and the second side pressure column 143 in the third direction at the same time, and the middle pressure column 141, the first side pressure column 142, and the second side pressure column
  • the movement direction of 143 is opposite.
  • One of the first side pressure column 142 and the second side pressure column 143 is fixed and the other is movable, and the driving component makes the middle pressure column 141, the first side pressure column 142, and the second side pressure column 143 movable. It moves in the third direction, and the moving direction of the middle pressure column 141 and the movable side pressure column is opposite.
  • the aforementioned third direction should be specially defined; specifically, the third direction should be such that the bus bar 04 can be bent and formed in the extending direction when the intermediate pressure column 141 and the two side pressure columns are relatively moved.
  • the third direction may be a direction perpendicular to the surface of the busbar 04 (that is, the aforementioned first surface and the second surface); in other specific embodiments, the first The three directions may also have a certain angle with the direction perpendicular to the surface of the busbar 04, but it can ensure the direction in which the busbar forms the aforementioned raised portion 041.
  • the driving component includes a third lifting assembly 18 and a fourth lifting assembly 19, and the third lifting assembly 18 and the fourth lifting assembly 19 are both mounted on the frame 11.
  • the third lifting component 18 is used to drive the first side pressure column 142 to move in the third direction
  • the fourth lifting component 19 is used to drive the second side pressure column 143 to move in the third direction, so that the two side pressure columns are opposed to each other.
  • the intermediate pressure column 141 moves so that the busbar 04 forms the aforementioned raised portion.
  • the third lifting component 18 is used to move the first side pressure column 142 to an obliquely downward side of the intermediate pressure column 141
  • the fourth lifting component 19 is used to move the second side pressure column 143 to the middle pressure column 141.
  • the other side is obliquely below.
  • the bus bar 04 can be laid on the upper side of the intermediate pressure column 141, and then the third lifting component 18 and the fourth lifting component 19 are caused to move at the same time, so that the first side pressure column 142 and the second side pressure column 143 are simultaneously
  • the lower bus bar 04 cooperates with the intermediate pressure column 141 to form a convex portion 041.
  • the busbar 04 when the busbar 04 is formed into a convex portion 041 by using the method (1) above, the first side pressure column 142 and the second side pressure column 143 move to the obliquely below the middle pressure column 141 at the same time, so it can also A component is provided to move the first side pressure column 142 and the second side pressure column 143 simultaneously, instead of the aforementioned third lifting assembly 18 and fourth lifting assembly 19.
  • the top corner should be as sharp as possible.
  • the extraction device may further include a fifth lifting assembly 20 disposed between the frame 11 and the intermediate pressure column 141 for driving the intermediate pressure column 141 to move in the third direction.
  • the fifth lifting assembly 20 is used to realize the movement of the intermediate pressure column 141 relative to the first side pressure column 142 and the second side pressure column 143; that is, in some embodiments, a busbar may be formed according to the aforementioned method (3). 04 ⁇ projection 041.
  • only the fifth lifting assembly 20 may be provided, that is, only the intermediate pressure column 141 is moved in the third direction, and the protrusion 041 in the busbar 04 is formed according to the aforementioned method (2).
  • only the third lifting component 18 and the fifth lifting component 20 may be provided, or only the fourth lifting component 19 and the fifth lifting component 20 may be provided, and the busbar is formed according to the method (4) described above. 04 ⁇ projection 041.
  • the busbar 04 provided in the embodiment of the present application is preferably spread in the form of a horizontal tile, so the aforementioned third direction is preferably the vertical direction. That is, the movable part in the third lifting assembly 18 can move in the vertical direction, so that the first side pressure column 142 provided thereon moves up and down; the movable part of the fourth lifting assembly 19 can also move in the vertical direction, so that The second side pressure column 143 provided thereon moves up and down; similarly, the movable part of the fifth lifting assembly 20 can also move in the vertical direction, so that the middle pressure column 141 provided thereon moves up and down.
  • the aforementioned intermediate pressure column 141, the first side pressure column 142, and the second side pressure column 143 are preferably triangular prisms.
  • one side flute of the triangular prism serving as the intermediate pressure post 141 is located at its highest position so that the top of the convex portion 041 forms a sharp corner.
  • the intermediate pressure column 141, the first side pressure column 142, and the third side pressure column may also be columnar bodies of other shapes.
  • the third lifting assembly 18, the fourth lifting assembly 19, and the fifth lifting assembly 20 all use a cylinder assembly.
  • the third lifting component 18, the fourth lifting component 19, and the fifth lifting component 20 may also adopt components such as a screw transmission mechanism that can achieve precise positioning.
  • the lead-out device 14 is three pressure columns, and the three pressure columns cooperate with the bending bus bar 04 to form a convex portion 041.
  • the lead-out device 14 may also be a raised block; before the busbar 04 is laid on the substrate 01, the busbar 04 is laid on the raised block and pressed against the raised block by an external force. ⁇ Forming a raised portion 041.
  • the welding device may further include a fourth translation component 17, a fifth translation component 21, and a sixth translation component 22.
  • the fourth translation assembly 17 is disposed between the frame 11 and the fifth lifting assembly 20 (that is, the fourth translation assembly 17 is disposed on the frame 11 and the fifth lifting assembly 20 is disposed on the fourth translation assembly 17).
  • the five lifting components 20 move in the second horizontal direction;
  • the fifth translation component 21 is disposed between the frame 11 and the third lifting component 18 (that is, the fifth translation component 21 is disposed on the frame 11 and the third lifting component 18 is disposed on
  • the fifth translation assembly 21) can drive the third lifting assembly 18 to move in the second horizontal direction;
  • the sixth translation assembly 22 is disposed on the frame 11 and the fourth lifting assembly 19 (that is, the sixth translation assembly 22 is disposed on the frame 11, the fourth lifting component 19 is disposed on the sixth translation component 22), which can drive the fourth lifting component 19 to move along the second horizontal direction.
  • the fourth translation component 17, the fifth translation component 21, and the sixth translation component 22 can drive the corresponding lifting component to the non-working position to avoid interference welding.
  • the moving direction of the fourth translation component 17, the fifth translation component 21, and the sixth translation component 22 is the second horizontal direction, so it can be known that the moving directions of the foregoing three translation components A first horizontal direction corresponding to the first translation component 16 moves correspondingly.
  • the moving directions of the three translation components may also be set to other horizontal directions having an acute angle with the first horizontal direction.
  • the size of the raised portion 041 in the bus bar 04 is small, and the aforementioned third lifting assembly 18, the fourth lifting assembly 19, and the fifth lifting assembly 20 are all standard components with larger sizes; in order to avoid the third The lifting assembly 18, the fourth lifting assembly 19, and the fifth lifting assembly 20 interfere when moving.
  • the welding device may further include a first cantilever 23, a second cantilever 24, and a third cantilever 25.
  • the first cantilever 23 is disposed between the fifth lifting assembly 20 and the intermediate pressure column 141
  • the second cantilever 24 is disposed between the third lifting assembly 18 and the first side pressure column 142
  • the third cantilever 25 is disposed between the fourth lifting assembly
  • the free ends of the second cantilever 24 and the third cantilever 25 are bent toward the first cantilever 23 side. It is conceivable that due to the cooperation of the first cantilever 23, the second cantilever 24, and the third cantilever 25, the third lifting component 18, the fourth lifting component 19, and the fifth lifting component 20 have a certain separation distance to avoid mutual interference.
  • the third lifting assembly 18, the fourth lifting assembly 19, and the fifth lifting assembly 20 may also be provided as small-sized customized pieces matching the processing of the convex portion 041; correspondingly, the welding equipment may not be provided.
  • the welding equipment provided in the embodiment of the present application may include a bus-belt supply device 12 that cooperates with the lead-out device 14 to automatically supply the bus-belt 04.
  • the busbar supply device 12 needs to move in the first horizontal direction to lay the long busbar 04 on the substrate 01.
  • the welding equipment further includes a third translational module 15; the third translational module 15 is installed on the frame 11, and the busbar supply device is installed on the third translational module 15. Driven by the third translation component 15, the third translation component 15 can move along the first horizontal direction.
  • the welding equipment may further include a second lifting assembly 34 that drives the busbar supply device 12 to move vertically.
  • the second lifting component 34 is installed on the third translation component 15 and can be moved with the third translation component 15; the busbar supply device 12 is installed on the second lifting component 34 and follows the second The lifting assembly 34 moves in the vertical direction.
  • the third translation module 15 has a longer length and a larger weight, and the second lifting module 34 has a smaller moving distance and a smaller weight, so the third The translation assembly 15 is mounted on the frame 11, and the second lifting assembly 34 is mounted on the third translation assembly 15.
  • the second lifting component 34 may also be installed on the frame 11, and the third translation component 15 may be installed on the second translation component.
  • the busbar supply device 12 may include a mounting plate 121, a tape coil mounting mechanism, and a braking mechanism.
  • the mounting plate 121 serves as a basis for carrying other mechanisms, and is used to fix the relative positions of the various mechanisms, and the busbar supply device 12 is mounted on the second lifting assembly 34.
  • the reel installation mechanism includes a reel rotation shaft 122 and a reel installation portion; the reel rotation shaft 122 is provided on the mounting plate 121 and can be rotated relative to the mounting plate 121; the reel installation portion is provided on the reel rotation shaft 122 and is wound with the reel The rotary shaft 122 rotates together.
  • the braking mechanism includes a friction portion A, a friction braking portion B, and a driving portion C.
  • the friction part A is fixedly connected to the reel rotating shaft 122 and rotates with the reel rotating shaft 122.
  • the friction braking portion B is connected to the driving portion C of the driving portion C, and can be pressed against the friction portion A under the action of the driving portion C.
  • the braking mechanism can quickly stop the tape rotation shaft and the tape coil mounting portion to avoid excessive unwinding of the busbar 04 and Remaining in the subsequent device, causing the subsequent device to become stuck.
  • the braking mechanism includes a friction wheel and a pulling rope 126; wherein the friction wheel is fixed on the reel rotating shaft and can rotate with the reel rotating shaft.
  • Two positioning pins are provided on the mounting plate 121, and the two positioning pins are located on the same side of the revolving shaft; the two free ends of the pulling rope 126 are fixedly connected to the two positioning pins, respectively, and the middle part is pressed against the friction wheel.
  • the pulling rope 126 is an elastic rope, and it is in a tensile deformation state.
  • the pulling rope 126 Because the pulling rope 126 is in a tensile deformation state, the pulling rope 126 causes a portion of the middle pressing against the friction wheel to apply a certain pressure to the friction wheel; and when the friction wheel rotates, the foregoing pressure causes the friction wheel and the pulling rope 126 to A friction force is generated between the two; this friction force can quickly stop the friction wheel, that is, the rotation of the reel shaft 122 is stopped.
  • the portion of the pulling rope 126 that is in contact with the friction wheel is the aforementioned friction braking portion B; the pulling rope 126 itself has deformation characteristics and also includes the driving portion C; correspondingly, The friction wheel is the aforementioned friction part A.
  • the pulling rope 126 is an elastic rope in a tensile deformation state, that is, the pulling rope 126 itself is also the driving portion C.
  • a stretching elastic member connected in series with the pulling rope 126 may also be provided, and the pulling rope 126 is pressed against the friction wheel by using the tensile force generated by the deformation of the stretching elastic member; in practical applications, the stretching elastic member is stretched.
  • a tension spring is preferably used.
  • the pulling rope 126 can also be a conventional rope, but it is only necessary to ensure that the pulling rope 126 is always in a tensioned state and pressed against the friction wheel.
  • the pulling rope 126 itself may be smooth, so the friction force generated by the cooperation with the friction wheel may be small; in order to increase the friction force, the surface of the pulling rope 126 and the friction wheel may also be matched.
  • a friction material is provided, and a friction material is used as the friction braking portion B.
  • the busbar supply device 12 may further include a guide driving mechanism 123.
  • the guide driving mechanism 123 is disposed on one side of the output bus belt 04 of the tape roll mounting portion, and includes a driving guide wheel 1231, a power member 1232, and a driven guide wheel 1233.
  • the power component 1232 is fixedly connected to the active guide wheel 1231 and can drive the active guide wheel 1231 to rotate.
  • the power component 1232 is mostly a servo motor, and its rotation speed and rotation angle can be accurately controlled.
  • the active guide wheel 1231 and the driven guide wheel 1233 cooperate to press the bus belt 04 to control the supply of the bus belt 04 to the subsequent mechanism.
  • the guide driving mechanism 123 may further include a guide wheel 1234.
  • the guide roller 1234 is disposed on the mounting plate 121 and is located between the tape roll mounting portion and the active guide roller 1231.
  • the bus 04 passes through the guide wheel 1234 and then extends into the gap.
  • the position of the guide wheel 1234 and the active guide wheel 1231 is fixed.
  • the deflection of the bus 04 from the guide wheel to the gap is fixed.
  • the direction is fixed, so after the guide belt 1234 passes the guide belt, the position relative to the active guide wheel 1231 is fixed.
  • the driving guide wheel 1231 and the driven guide wheel 1233 can always clamp the bus belt 04.
  • the busbar supply device 12 may further include a cutter mechanism 124 and a pressing mechanism 125.
  • the cutter is disposed on a side of the driving guide wheel 1231 and the driven guide wheel 1233 away from the tape installation portion, and is used to cut the bus bar 04 unwound from the tape installation portion.
  • the pressing mechanism 125 is disposed on the side of the cutter mechanism 124 away from the guide driving mechanism 123.
  • the pressing mechanism 125 presses the bus belt 04 at least when the cutter mechanism 124 works to prevent the bus belt 04 from being driven by the cutting force of the cutter The bottom moves in the opposite direction and is not cut off.
  • the cutter mechanism 124 includes a fixed cutter portion 1242, a movable cutter portion 1241, and a reciprocating drive portion 1243.
  • the fixed-knife section 1242 and the reciprocating driving section 1243 are both fixed on the mounting plate 121.
  • the movable cutting section 1241 is mounted on the reciprocating member of the reciprocating driving section 1243, and reciprocates relative to the fixed-cutting section 1242 under the driving of the reciprocating member ;
  • the fixed cutting blade portion 1242 cooperates with the movable cutting blade portion 1241 to realize cutting of the busbar 04.
  • the pressing mechanism 125 may include a pressing base 1251, a pressing block, and a pressing spring 1253; the pressing block includes a reciprocating rod 1254, a pressing portion 1255, and a limit pin 1256. .
  • a through hole is provided on the pressing base 1251; a reciprocating rod 1254 is inserted into the through hole, a limit pin 1256 is provided at an end of the reciprocating rod 1254 protruding from the through hole, and a pressing portion 1255 is provided on the reciprocating rod 1254 extending through the through hole
  • the other end of the stop; the cross-sectional dimensions of the stop pin 1256 and the pressing part 1255 are larger than the cross-sectional size of the through hole, so that the reciprocating rod 1254 will not leave the through hole; , Always compressed.
  • the compression spring 1253 is in a compressed state, the pressing portion 1255 is normally as far away from the pressing base 1251 as possible, and can be pressed against the bus 04 conveyed from the cutting mechanism 124 to ensure that the cutting mechanism converges during operation. Belt 04 does not move.
  • the compression spring 1253 can also be disposed between the pressing base 1251 and the limit pin 1256.
  • the pressing mechanism 125 may further include a pressing roller 1253; the pressing roller 1253 is disposed on the pressing portion 1255 and can rotate relative to the pressing portion 1255.
  • the holding roller 1253 can not only ensure that the busbar 04 does not move when the cutting mechanism is in operation, but also ensure that the busbar supply device 12 can conveniently transport the busbar 04 outward. That is, the holding roller 1253 also functions as a guide wheel.
  • the material pressing mechanism 125 can not only prevent the busbar from moving in the reverse direction when the cutter mechanism 124 works, but also press the busbar between the substrate of the solar cell and the lead-out device.
  • the pressure column makes the laying of the busbar smoother.
  • the busbar supply device 12 moves with the third translation assembly 15 to lay the busbar 04 on the substrate 01, so that the busbar 04 is pressed against the drainage belt 03 on the edge of the substrate.
  • the welding device 13 moves with the first translation assembly 16 so that the tile portion 041 and the drainage tape 03 are welded together at the intersection.
  • the third lifting assembly 18 drives the first side pressure column 142 to move downward, so that the first side pressure column 142 is pressed against the busbar 04, so that the busbar 04 is pressed on the substrate 01.
  • the bus-belt supply device 12 continues to output the bus-belt 04.
  • the second lifting assembly 34 drives the bus-belt supply device 12 to move up, so that the bus-bar 04 is bypassed from the upper side of the intermediate pressure column 141.
  • the second lifting assembly 34 drives the busbar supply device 12 to move down, so that the busbar 04 output by the busbar supply device 12 is pressed against the substrate 01 again.
  • the fourth lifting assembly 19 drives the second side pressure column 143 to move downward, so that the second side pressure column 143 is pressed against the busbar 04, and then the busbar 04 It is pressed on the substrate 01.
  • the drawing device 14 bends the bus bar 04 to form a convex portion 041.
  • the fifth lifting component 20 drives the intermediate pressure column 141 to move up by one end, so that the top of the protruding portion 041 is sharper.
  • the busbar 04 does not need to be cut into a segmented, independent structure with edges bent, and is then accurately grasped and placed on the substrate 01 of the solar cell module by a robot arm. Welding; the complexity of the machining process is greatly simplified.
  • the high temperature generated during the welding process of the welding device 13 may cause the properties of the adhesive layer on the substrate 01 to change.
  • the welding equipment provided by some embodiments of the present application may further include components that isolate the substrate 01 and the welding device 13 during the welding process.
  • the welding apparatus may include a suction cup 26, a welding bottom plate 27, a sixth lifting assembly 28 and a seventh translation assembly 29.
  • the sixth lifting module 28 and the seventh translation module 29 are both installed on the frame 11, wherein the sixth lifting module 28 is suspended directly above the substrate 01, and the seventh translation module 29 is disposed on the side of the substrate 01.
  • the suction cup 26 is suspended from the lower side of the sixth lifting assembly 28 and is connected to the sixth lifting assembly 28 through a hinge shaft, and can be moved in the vertical direction under the driving of the sixth lifting assembly 28.
  • the welding bottom plate 27 is disposed on the seventh translation assembly 29 and moves in the second horizontal direction under the driving of the seventh translation assembly 29.
  • the sixth lifting assembly 28 drives the suction cup 26 to move downward; after the suction cup 26 adsorbs the photovoltaic chip 02 on the edge side, the sixth lifting assembly 28 drives the suction cup 26 Move, the suction cup 26 drives the photovoltaic chip 02 on the edge side to a certain height.
  • the welding bottom plate 27 is moved to the area where the busbar 04 is laid on the upper side of the base plate 01.
  • the sixth lifting assembly 28 drives the suction cup 26 to move down again.
  • the suction cup 26 places the photovoltaic chip 02 on the substrate 01 and overlaps the drainage tape 03 connected to the photovoltaic chip 02 on the welding bottom plate 27.
  • the welding base plate 27 After the welding base plate 27 is set on the substrate 01, during the welding device process, the welding base plate 27 directly separates the substrate 01 and the drainage belt 03, and the heat generated by the welding device 13 welding the drainage belt 03 and the bus belt directly acts on the welding floor. Without directly acting on the substrate.
  • the welding equipment can drive the bus belt supply device 12, the welding device 13, and the lead-out device 14 to complete the laying, bending of the bus belt 04 to form a convex portion 041, and the welding work with the drainage belt 03.
  • the suction cup 26 is suspended on the lower side of the sixth lifting assembly 28 through a hinge shaft.
  • the suction cup 26 can also be directly fixed to the lower side of the sixth lifting assembly 28 and cannot rotate relative to the sixth lifting assembly 28. In this case, it is necessary to strictly control the suction cup 26 after the photovoltaic chip 02 is adsorbed.
  • the sixth lifting component 28 moves up and down to avoid the problem of disconnection of the solder joint between the drainage tape 03 and the photovoltaic chip 02.
  • a bracket 30 may be provided between the suction cup 26 and the sixth lifting assembly 28.
  • the bracket 30 includes a lifting arm 301 and a mounting arm 302.
  • An extending direction of the lifting arm 301 and an extending direction of the mounting arm 302 form an included angle.
  • An angle is formed with the extending direction of the lifting arm 301.
  • the sixth lifting assembly 28 is connected to the lifting arm 301 through a hinge shaft, and the suction cup 26 is fixed on the mounting arm 302.
  • the bracket 30 when the bracket 30 is in a natural suspension state, the working surface of the suction cup 26 is inclined downward toward the outer peripheral side of the frame 11.
  • the suction cup 26 inevitably drives the bracket 30 to rotate around the hinge axis and presents a tilted state; when the position of the suction cup 26 is moved down and the flat photovoltaic chip 02 is adsorbed, the suction cup 26 will be in a normal state; when the suction cup 26 is raised, the suction cup 26 Will swing under the action of its own gravity; in this way, by using the swing of the suction cup 26 itself, the impact of the sudden operation of the sixth lifting assembly 28 on the photovoltaic chip 02 can be overcome, and then the photovoltaic chip 02 can be prevented from being lifted as a whole.
  • the welding equipment in order to prevent the suction cup 26 and the sixth lifting assembly 28 from being disposed at the edges and affecting the movement of the busbar supply device 12 and the welding device 13, the welding equipment further includes a drive for the sixth lifting assembly 28.
  • Translating driving assembly the driving assembly can move the sixth lifting assembly 28 in the second horizontal direction.
  • the suction cup 26, the sixth lifting component 28, and the seventh translation component 29 may not be provided, but the photovoltaic chip 02 may be manually lifted, and then the welding bottom plate 27 may be placed between the drainage tape 03 and the substrate 01.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un appareil de soudage et un procédé d'assemblage d'une cellule solaire. L'appareil de soudage comprend un bâti, un dispositif de sortie et un dispositif de soudage. Le dispositif de sortie est installé sur le bâti et utilisé pour cintrer une barre de convergence de courant, afin d'amener la barre de convergence de courant à former des parties renflées et des parties aplaties situées des deux côtés des parties renflées, la partie renflée séparant les parties aplaties sur les deux côtés. Le dispositif de soudage est installé sur le bâti et utilisé pour relier une bande de drainage aux parties aplaties, au moyen d'un soudage. Pendant la pose et le soudage de la barre de convergence de courant, le dispositif de sortie amène la barre de convergence de courant à former les parties renflées et les parties aplaties. Dans un processus ultérieur d'assemblage d'une cellule solaire, les parties renflées passent à travers des orifices de sortie dans une feuille arrière de la cellule solaire et sont ensuite coupées pour former des bornes connectées aux parties aplaties. De cette manière, on évite le problème de l'état de la technique selon lequel le traitement d'une barre de convergence de courant nécessite un positionnement précis pendant la coupe, le cintrage et la pose, ce qui permet de réduire le coût de pose de la barre de convergence de courant pendant la production de cellules solaires et également d'améliorer l'efficacité de production.
PCT/CN2019/091971 2018-06-22 2019-06-20 Appareil de soudage et procédé d'assemblage d'une cellule solaire WO2019242663A1 (fr)

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CN201810652965.7 2018-06-22
CN201810652965.7A CN108581497A (zh) 2018-06-22 2018-06-22 焊接设备和太阳能电池的组装方法

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CN108581497A (zh) * 2018-06-22 2018-09-28 君泰创新（北京）科技有限公司 焊接设备和太阳能电池的组装方法
CN108807235A (zh) * 2018-06-22 2018-11-13 君泰创新（北京）科技有限公司 汇流带供给装置
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