CN111203661B

CN111203661B - A kind of IBC solar cell string light welding device and welding method thereof

Info

Publication number: CN111203661B
Application number: CN202010039308.2A
Authority: CN
Inventors: 温永乐; 蒋宇; 戴龙君; 崔小祥
Original assignee: Hangzhou Confirmware Technology Co ltd
Current assignee: Hangzhou Confirmware Technology Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2021-06-22
Anticipated expiration: 2040-01-15
Also published as: CN111203661A

Abstract

The invention discloses an IBC solar cell string light welding device and a welding method thereof. Compared with the conventional stringer, which uses the latter cell to fix the position of the metal wire, the IBC cell cannot do this, and a mesh clamp is needed to cover and fix it. The present invention includes a frame, a welding strip feeding device, a welding strip transferring device, a light welding device, a jig reflow device, a battery conveyor, a jig conveyor and a pressing and positioning jig. The gripper conveyor is located on one side of the battery conveyor. The ribbon feeder is located below the output end of the gripper conveyor. The ribbon transfer device is located above the input end of the battery conveyor and the output end of the fixture conveyor. The ribbon transfer device, the light welding device, and the fixture reflow device are arranged in sequence along the conveying direction of the battery conveyor. In the present invention, the welding strip is pressed with a pressing and positioning fixture while the welding strip is placed, so that the welding strip is prevented from being displaced during transportation, and the yield of the battery string is greatly improved.

Description

IBC solar cell string light welding device and welding method thereof

Technical Field

The invention belongs to the technical field of solar cell production equipment, and particularly relates to an IBC solar cell string light welding device and a welding method thereof.

Background

The IBC cell (full back electrode contact crystalline silicon photovoltaic cell) is a technology that metal contacts of a positive pole and a negative pole are moved to the back of a cell piece, so that the front of the cell piece facing the sun is in full black, and metal wires on the front of most photovoltaic cells cannot be seen completely. The power generation device not only brings more effective power generation area for users, but also is beneficial to improving the power generation efficiency, and is more attractive in appearance. The IBC battery is mainly characterized in that a PN junction and metal contact are both arranged on the back surface of the battery, and the front surface of the IBC battery is not influenced by shielding of a metal electrode, so that the IBC battery has higher short-circuit current Jsc, and meanwhile, wider metal grid lines can be allowed on the back surface to reduce series resistance Rs so as to improve a filling factor FF; the addition of the Front Surface Field (FSF) and the open circuit voltage gain from the good passivation results in a high conversion efficiency for such a Front side unobstructed cell. Because the metal wire all is in the back of battery piece, the in-process of stringer puts forward higher requirement to the placing of metal wire is fixed, compares in the position that a slice of battery piece comes fixed metal wire behind the conventional stringer, and the IBC battery can't accomplish this point, needs to use the pressure net anchor clamps to cover fixedly.

Disclosure of Invention

The invention aims to overcome the technical defect that an IBC solar cell string is difficult to automatically weld in the prior art, and provides an IBC solar cell string light welding device and a welding method thereof.

The invention discloses an IBC solar cell tandem light welding device which comprises a rack (1), a solder strip feeding device (2), a solder strip transferring device (3), a light welding device (4), a clamp backflow device (5), a cell conveyor (6), a clamp conveyor (7) and a pressing and positioning clamp (8). The clamp conveyor (7) is positioned on one side of the battery conveyor (6). The welding strip feeding device (2) is positioned below the output end of the clamp conveyor (7). The solder strip transfer device (3) is positioned above the input end of the battery conveyor (6) and the output end of the clamp conveyor (7). The solder strip transfer device (3), the optical welding device (4) and the clamp reflow device (5) are sequentially arranged along the conveying direction of the battery conveyor (6). And a heating lamp tube is arranged in the optical welding device (4). The heating lamp tube irradiates the battery piece and the welding strip for welding. The welding strip transfer device (3) transfers the pressing and positioning clamp (8) from the output end of the clamp conveyor (7) to the input end of the battery conveyor (6); the clamp backflow device (5) transfers the pressing positioning clamp (8) which completes pressing from the battery conveyor (6) to the input end of the clamp conveyor (7). The battery conveyor (6) adopts a vacuum adsorption type belt conveyor. Four adsorption conveyer belts are arranged in the battery conveyer (6) side by side. The distance between two adsorption conveying belts positioned at the outer side of the four adsorption conveying belts in the battery conveyor (6) is larger than the width of the battery piece.

The pressing and positioning clamp (8) comprises an end fixing block (8-1), a connecting frame (8-2), a pressing wire (8-3) and a linkage pressing rod (8-4). Two ends of the connecting frame (8-2) and the two end fixing blocks (8-1) respectively form sliding pairs which slide along the thickness direction of the end fixing blocks (8-1). The two end fixing blocks (8-1) are fixed with each other. The opposite sides of the two end fixing blocks (8-1) are provided with grabbing grooves. A plurality of pressing wires (8-3) which are sequentially arranged at intervals along the width direction of the connecting frame (8-2) are all fixed on the connecting frame (8-2). The two ends of the connecting frame (8-2) are provided with clamping grooves. The two end fixing blocks (8-1) are provided with linkage pressing rods (8-4). The middle part of the linkage pressing rod (8-4) and the corresponding end fixing block (8-1) form a revolute pair. One end of the linkage pressing rod (8-4) extends into the clamping groove on the connecting frame (8-2). The other end of the linkage pressing rod (8-4) is higher than the top surface of the end fixing block (8-1).

The welding strip feeding device (2) comprises a feeding frame (2-1), a feeding guide rail (2-2), a material pulling mechanism, a clamping and cutting mechanism and a welding strip unwinding mechanism. The feeding frame (2-1) is fixed with the frame (1). The feeding guide rail (2-2) is fixed on the feeding frame (2-1). The material pulling mechanism comprises a material pulling sliding table (2-3), a first material supply driving assembly and a first mechanical clamping jaw (2-4). The material pulling sliding table (2-3) and the material feeding guide rail (2-2) form a sliding pair. The material pulling sliding table (2-3) is driven by a first material supply driving component. Four first mechanical clamping jaws (2-4) which are sequentially arranged are arranged on the material pulling sliding table (2-3).

The clamping and cutting mechanism comprises a clamping and cutting sliding table (2-6), a second feeding driving assembly, a cutting assembly (2-7) and a second mechanical clamping jaw (2-8). The clamping and cutting sliding table (2-6) and the two feeding guide rails (2-2) form a sliding pair. The clamping and cutting sliding tables (2-6) are driven by a second feeding driving assembly. Four second mechanical clamping jaws (2-8) which are sequentially arranged are arranged on the clamping and cutting sliding table (2-6). The four second mechanical jaws (2-8) are aligned with the four first mechanical jaws (2-4), respectively. The cutting assembly (2-7) is arranged between the first mechanical clamping jaw (2-4) and the second mechanical clamping jaw (2-8).

The welding strip transfer device (3) comprises a first transverse moving mechanism (3-1), a first lifting mechanism and a welding strip clamp synchronous grabbing mechanism. The first transverse moving mechanism (3-1) is arranged on the frame. The first lifting mechanism is arranged on the first transverse moving mechanism (3-1). The synchronous grabbing mechanism of the welding strip clamp is arranged on the first lifting mechanism. The synchronous grabbing mechanism of the welding strip clamp comprises a first grabbing support (3-5), a first welding strip feeding adsorption assembly, a second welding strip feeding adsorption assembly and a clamp clamping assembly. The clamp clamping assembly comprises two single-sided clamping jaws (3-6) and two single-sided pushing elements (3-11). The single-side clamping jaws (3-6) are respectively arranged at two sides of the first grabbing bracket (3-5). Two unilateral clamping jaws (3-6) respectively clamp two ends of the pressing positioning fixture (8). Two single-side pushing and pressing pieces (3-11) are arranged on the first grabbing bracket (3-5) in a centering mode and located between the two single-side clamping jaws (3-6). The two unilateral pushing and pressing pieces (3-11) respectively push and press the linkage pressing rods (8-4) on the two end fixing blocks (8-1).

The first welding strip feeding adsorption assembly is positioned between the two single-side pushing pieces (3-11) and comprises a first pushing cylinder (3-7) and an inserting adsorption block (3-8). The penetrating adsorption blocks (3-8) move up and down through the first pushing-down cylinders (3-7). The interpenetration adsorption block (3-8) is composed of a base plate (3-8-1) and a plurality of vertical adsorption plates (3-8-2) which are integrally formed. The tops of the vertical adsorption plates (3-8-2) which are vertically arranged are connected with the base plate (3-8-1). The vertical adsorption plates (3-8-2) are arranged at equal intervals in sequence. The sum of the width of the vertical adsorption plate (3-8-2) and the distance between two adjacent vertical adsorption plates (3-8-2) is equal to the center distance of two adjacent pressing wires (8-3) in the pressing and positioning fixture (8). The distance between two adjacent vertical adsorption plates (3-8-2) is larger than the diameter of the pressing wire (8-3); the bottom of each vertical adsorption plate (3-8-2) is provided with four first adsorption grooves (3-8-3) which are arranged at equal intervals in sequence. The bottoms of the four first adsorption grooves (3-8-3) are provided with first adsorption ports.

And the second welding strip feeding adsorption assembly is positioned on one side of the first welding strip feeding adsorption assembly, which is far away from the input end of the clamp conveyor (7). The second welding strip feeding adsorption assembly comprises a second push-down cylinder (3-9) and a horizontal adsorption plate (3-10). The horizontal adsorption plates (3-10) move up and down through the second push-down cylinders (3-9). The bottom of each horizontal adsorption plate (3-10) is provided with four second adsorption grooves which are sequentially arranged at equal intervals. The four second adsorption grooves on the horizontal adsorption plate (3-10) are respectively aligned with the four first adsorption grooves (3-8-3) on the vertical adsorption plate (3-8-2). A plurality of second adsorption ports are formed in the second adsorption groove.

The clamp backflow device (5) comprises a second transverse moving mechanism (5-1), a second lifting mechanism and a clamp grabbing mechanism. The second transverse moving mechanism (5-1) is arranged on the frame. The second lifting mechanism is arranged on the second transverse moving mechanism (5-1). The fixture grabbing mechanism is installed on the second lifting mechanism.

Preferably, the IBC solar cell tandem welding device further comprises a feeding robot and a material tray. The feeding robot and the material tray are both arranged at one end of the frame (1) and are positioned at the input end of the battery conveyor (6). The feeding robot adopts an industrial robot with an end effector as a pneumatic sucker.

Preferably, the battery conveyor (6) comprises a transmission roller (6-1), an adsorption conveying belt (6-2), a conveying motor (6-3) and a conveying adsorption plate (6-4). Two transmission rollers (6-1) are respectively supported at two ends of the frame (1). The four adsorption conveying belts (6-2) are wound around the two transmission rollers (6-1) and tensioned through tensioning wheels. The four adsorption conveying belts (6-2) are arranged at intervals in sequence. The distance between two adsorption conveying belts (6-2) in the middle of the four adsorption conveying belts (6-2) is smaller than the width of the battery piece. The conveying motor (6-3) is fixed on the conveying frame, and the output shaft is fixed with one of the transmission rollers (6-1). The conveyer belt is provided with a plurality of waist-shaped holes which are sequentially arranged along the length direction of the conveyer belt. The conveying adsorption plate (6-4) is fixed on the conveying frame. The conveying adsorption plate (6-4) is positioned below the conveying section of each adsorption conveying belt (6-2). Four rows of adsorption holes are arranged on the top surface of the conveying adsorption plate (6-4). The four rows of adsorption holes are respectively aligned with the waist-shaped holes on the four adsorption conveyer belts (6-2). A cavity is arranged in the conveying adsorption plate (6-4). The cavity is connected with the adsorption holes and the air outlet holes on the conveying adsorption plate (6-4). The air outlet on the conveying adsorption plate (6-4) is connected with the air inlet of the air pump.

Preferably, two clamp conveying belts are arranged on the clamp conveyor (7); two anchor clamps conveyer belts are side by side and the interval sets up. Side baffles are arranged on two sides of the top of the clamp conveyor (7). The distance between the two side baffles is equal to the length of the pressing and positioning clamp (8). The output end of the clamp conveyor (7) is provided with a first limiting sensor. The first limit sensor adopts an infrared diffuse reflection sensor. The first limit sensor faces the input end of the clamp conveyor (7).

Preferably, the first feed drive assembly comprises a first feed timing belt, a first feed timing wheel and a first feed drive motor (2-5). The two first feeding synchronous wheels are respectively supported at two ends of the feeding frame (2-1) and are connected through a first feeding synchronous belt. The material pulling sliding table (2-3) is fixed with the first material supply synchronous belt. The first feeding driving motor (2-5) is fixed on the feeding frame (2-1), and the output shaft is fixed with one first feeding synchronous wheel.

The second feeding driving assembly comprises a second feeding synchronous belt, a second feeding synchronous wheel and a second feeding driving motor (2-9). The two second feeding synchronous wheels are respectively supported at two ends of the feeding frame (2-1) and are connected through a second feeding synchronous belt. The clamping and cutting sliding tables (2-6) are fixed with a second feeding synchronous belt. The second feeding driving motor (2-9) is fixed on the feeding frame (2-1), and the output shaft is fixed with one of the second feeding synchronizing wheels.

The first mechanical clamping jaw (2-4) comprises a first jaw frame (2-4-1), a first clamping cylinder (2-4-2), a first connecting rod (2-4-3) and a first single jaw (2-4-4). The first claw frame (2-4-1) is fixed on the material pulling sliding table (2-3). The first clamping cylinder (2-4-2) is fixed on the first claw frame (2-4-1). The inner ends of the two first connecting rods (2-4-3) are hinged with the outer end of a piston rod of the first clamping cylinder (2-4-2), and the outer ends of the two first connecting rods are hinged with the inner ends of the two first single claws (2-4-4) respectively; the middle parts of the two first single claws (2-4-4) are hinged with the first claw frame (2-4-1).

The second mechanical clamping jaw (2-8) comprises a second jaw frame (2-8-1), a second clamping cylinder (2-8-2), a fixed clamping block (2-8-3) and a movable clamping block (2-8-4). The second claw frame (2-8-1) is fixed on the clamping and cutting sliding table (2-6). The fixed clamping block (2-8-3) is fixed at the top of the second clamping frame. The middle part of the movable clamping block (2-8-4) is hinged with the fixed clamping block (2-8-3). The outer end of the movable clamping block (2-8-4) is provided with a horizontal clamping rod.

The cutting assembly (2-7) comprises a cutting frame, an upper tool rest, a lower tool rest, an upper cutting cylinder (2-7-1) and a lower cutting cylinder (2-7-2). The cutting frame is fixed on the clamping and cutting sliding table (2-6). The upper tool rest and the lower tool rest are arranged up and down and form a sliding pair sliding along the vertical direction together with the cutting frame. The upper knife rest and the lower knife rest are both fixed with cutters. The two cutters are corresponding in position. The upper cutting cylinder (2-7-1) and the lower cutting cylinder (2-7-2) are both fixed with the cutting frame. The piston rods of the upper cutting cylinder (2-7-1) and the lower cutting cylinder (2-7-2) are respectively fixed with the upper tool rest and the lower tool rest. Four guide rings which are arranged in sequence are fixed on the feeding frame (2-1). The four guide rings are positioned on one side of the second mechanical clamping jaws (2-8) far away from the first mechanical clamping jaws (2-4) and are respectively aligned with the four second mechanical clamping jaws (2-8). Four solder strip unwinding mechanisms are all installed on the frame (1). The welding strips released by the four welding strip unwinding mechanisms respectively pass through the corresponding guide rings, pass between the fixed clamping blocks (2-8-3) corresponding to the second mechanical clamping jaws (2-8) and the clamping rod, and pass between the two cutters, and the end parts of the welding strips are clamped by the corresponding first mechanical clamping jaws (2-4).

Preferably, the single-side clamping jaw (3-6) comprises a first grabbing cylinder, a second connecting rod and a first hook jaw (3-6-1). The middle part of the first hook claw (3-6-1) is hinged with the first grabbing bracket (3-5) respectively. The first grabbing cylinder is fixed with the first grabbing bracket (3-5). One end of the second connecting rod is hinged with a piston rod of the first grabbing cylinder, and the other end of the second connecting rod is hinged with one end of the first hook claw (3-6-1). The single-side pushing piece (3-11) comprises a pushing cylinder and a pushing block. The pushing cylinder is fixed on the first grabbing bracket (3-5), and the piston rod is arranged downwards. The piston rod is fixed with a push block. The positions of the two push blocks correspond to two end fixing blocks (8-1) on a pressing and positioning clamp (8) clamped by the two unilateral clamping jaws (3-6) respectively.

Preferably, the clamp grabbing mechanism comprises a second grabbing bracket (5-5), two second grabbing air cylinders (5-6) and two clamping jaw assemblies. The second grabbing bracket (5-5) is fixed on the second lifting sliding table (5-4). The clamping jaw assembly comprises a turnover strip (5-8) and two second hook claws (5-7). The two second hook claws (5-7) and the turning strip (5-8) form sliding pairs and are positioned through set screws. The two clamping jaw assemblies are respectively arranged at two sides of the second grabbing bracket (5-5). The cylinder bodies of the two second grabbing cylinders (5-6) are hinged with the second grabbing brackets (5-5). Piston rods of the two second grabbing cylinders (5-6) are respectively hinged with the two turning strips (5-8).

Preferably, the light welding device (4) comprises a welding frame (4-1), a light welding transverse adjusting assembly, a longitudinal adjusting assembly, a turnover assembly, a mounting frame (4-2), a preheating unit (4-3) and a light welding unit (4-4). The welding frame (4-1) is fixed on the frame (1). The light welding transverse adjusting assembly comprises a transverse adjusting slide rail (4-5), a transverse adjusting frame (4-6), a transverse adjusting bolt (4-7) and a locking block (4-8). The transverse adjusting slide rail (4-5) is fixed on the welding frame (4-1). The transverse adjusting frame (4-6) and the transverse adjusting slide rail (4-5) form a sliding pair. The horizontal adjusting bolt (4-7) arranged horizontally and the welding frame (4-1) form a revolute pair, and the horizontal adjusting bolt and the horizontal adjusting frame (4-6) form a screw pair. The transverse adjusting bolts (4-7) are locked by the locking blocks (4-8). The locking block (4-8) consists of a spanner bolt and a clamping block with a deformation joint. The spanner bolt can extrude the deformation joint by rotating, so that the locking block (4-8) clamps the transverse adjusting bolt (4-7).

The longitudinal adjusting assembly comprises a longitudinal adjusting slide rail, a longitudinal adjusting frame (4-9) and a longitudinal adjusting bolt (4-10). The vertical adjusting slide rail is fixed with the horizontal adjusting frame (4-6). The longitudinal adjusting frames (4-9) and the longitudinal adjusting slide rail form a sliding pair. The top of the longitudinal adjusting frame (4-9) is provided with an adjusting threaded hole. The longitudinal adjusting bolts (4-10) and the adjusting threaded holes on the longitudinal adjusting frames (4-9) form a screw pair and abut against the transverse adjusting frames (4-6). The overturning assembly comprises an overturning frame (4-11) and an overturning cylinder (4-12). The roll-over stand (4-11) is hinged with the longitudinal adjusting stand (4-9). The end part of the cylinder body of the turnover cylinder (4-12) is hinged with the longitudinal adjusting frame (4-9). The outer end of a piston rod of the turnover cylinder (4-12) is hinged with the turnover frame (4-11). The preheating unit (4-3) and the light welding unit (4-4) are both arranged on the roll-over stand (4-11). The preheating unit (4-3) is positioned between the light welding unit (4-4) and the synchronous grabbing mechanism of the welding strip clamp. The preheating unit (4-3) and the light welding unit (4-4) have the same structure and respectively comprise a lampshade, a heating lamp tube and a light welding radiator (4-13). A light-welded heat sink (4-13) is mounted on top of the lamp housing. The heating lamp tube is arranged in the lampshade.

Preferably, the first transverse moving mechanism (3-1) comprises a first transverse moving frame, a first transverse moving guide rail, a first transverse moving sliding table and a first transverse moving driving assembly. The first transverse moving frame is fixed on the frame (1). The first transverse moving guide rail is fixed on the first transverse moving frame and is arranged along the width direction of the rack (1); the first transverse sliding table and the first transverse sliding guide rail form a sliding pair. The first transverse moving driving assembly comprises a first transverse moving synchronous belt, a first transverse moving synchronous wheel and a first transverse moving driving motor. The two first transverse moving synchronous wheels are respectively supported at two ends of the first transverse moving frame and are connected through the first transverse moving synchronous belt. The first transverse sliding table is fixed with the first transverse sliding synchronous belt. The first transverse moving driving motor is fixed on the first transverse moving frame, and the output shaft is fixed with one of the first transverse moving synchronous wheels. The first lifting mechanism comprises a first lifting frame (3-2), a first lifting screw (3-3), a first lifting motor (3-4) and a first lifting sliding table. The first lifting frame (3-2) is fixed with the first transverse moving slide block; a first lifting screw rod (3-3) which is vertically arranged is supported on the first lifting frame (3-2). The first lifting motor (3-4) is fixed on the first lifting frame (3-2), and the output shaft is fixed with the first lifting screw rod (3-3). The first lifting sliding table and the first lifting frame (3-2) form a sliding pair, and the first lifting sliding table and the first lifting screw rod (3-3) form a screw pair.

The second transverse moving mechanism (5-1) comprises a second transverse moving frame, a second transverse moving guide rail, a second transverse moving sliding table and a second transverse moving driving assembly. The second transverse moving frame is fixed on the frame (1). The second transverse moving guide rail is fixed on the second transverse moving frame and is arranged along the width direction of the rack (1); the second transverse sliding table and the second transverse sliding guide rail form a sliding pair. The second transverse moving driving assembly comprises a second transverse moving synchronous belt, a second transverse moving synchronous wheel and a second transverse moving driving motor. And the two second transverse moving synchronous wheels are respectively supported at two ends of the second transverse moving frame and are connected through the second transverse moving synchronous belt. The second transverse sliding table is fixed with the second transverse sliding synchronous belt. The second transverse moving driving motor is fixed on the second transverse moving frame, and the output shaft is fixed with one of the second transverse moving synchronous wheels. The second lifting mechanism comprises a second lifting frame (5-2), a backflow lifting cylinder (5-3) and a second lifting sliding table (5-4). The second lifting frame (5-2) is fixed with the second transverse moving slide block; a second lifting screw rod which is vertically arranged is supported on the second lifting frame (5-2). The backflow lifting cylinder (5-3) is fixed on the second lifting frame (5-2), and the piston rod is fixed with the second lifting sliding table (5-4).

The welding method of the IBC solar cell string light welding device comprises the following specific steps:

step one, placing a box body filled with the battery piece into a material tray. The feeding robot grabs the battery pieces one by one from the material tray and places the battery pieces on the battery conveyor (6).

And step two, the battery conveyor (6) conveys the battery pieces, and when one battery piece reaches the position below the welding strip transfer device (3), the corresponding battery conveyor (6) stops conveying. The clamp conveyor (7) conveys a pressing and positioning clamp (8) to the lower part of the welding strip transfer device (3) to be used as a working pressing and positioning clamp.

Meanwhile, four first mechanical clamping jaws (2-4) in the welding strip feeding device (2) clamp the end parts of four welding strips respectively; the material pulling sliding table (2-3) and the clamping and cutting sliding table (2-6) slide in opposite directions, so that the length of the welding strip between the first mechanical clamping jaw (2-4) and the cutter in the cutting assembly (2-7) reaches a preset value. And the four second mechanical clamping jaws (2-8) respectively clamp the corresponding welding strips. The cutting assembly (2-7) cuts the four welding strips. The ends of the four welding strips, which are far away from the first mechanical clamping jaws (2-4), are positioned right below the working pressing and positioning clamp.

Step three, moving a welding strip clamp synchronous grabbing mechanism in the welding strip transfer device (3) to be right above the four welding strips; two unilateral clamping jaws (3-6) respectively hook two ends of the working pressing positioning fixture; then, the two single-side pushing pieces (3-11) are pushed out, so that the connecting frame (8-2) in the working pressing positioning fixture is lifted upwards.

Pushing out by a first downward pushing cylinder (3-7) and a second downward pushing cylinder (3-9); after the vertical adsorption plates (3-8-2) on the interpenetration adsorption blocks (3-8) penetrate through gaps among the pressing wires (8-3) on the working pressing positioning fixture, the first adsorption grooves (3-8-3) at the bottom of the vertical adsorption plates (3-8-2) are respectively contacted with the corresponding welding strips. The second adsorption grooves at the bottom of the horizontal adsorption plates (3-10) are respectively contacted with the corresponding welding strips.

Fifthly, inserting the adsorption blocks (3-8) and the horizontal adsorption plates (3-10) to adsorb the four welding strips; the four first mechanical clamping jaws (2-4) are loosened.

The welding strip transfer device (3) conveys the working pressing positioning fixture and the four welding strips to the position right above the battery piece of the battery conveyor, and places the welding strips and the working pressing positioning fixture on the battery piece; the working pressing positioning fixture is positioned above one battery piece, and the welding strip covers the two battery pieces. The two single-side pushing pieces (3-11) retract, so that the connecting frame (8-2) in the working pressing positioning clamp moves downwards; a pressing wire (8-3) on the working pressing positioning clamp presses one end of each of the four welding strips.

The part of the welding strip which is not pressed by the working pressing and positioning clamp is pressed in the next conveying process of the welding strip and the pressing and positioning clamp (8). Carrying the welding strips and the pressing positioning clamp (8) twice; the positions of the four welding strips in the previous conveying are staggered with those of the four welding strips in the next conveying; one battery string includes twelve battery cells. The battery piece at the head end and the battery piece at the tail end are respectively provided with four welding strips which only cover one battery piece; the eight welding strips only covering one battery piece are also conveyed by the welding strip transfer device (3); when four short welding strips with short lengths positioned at the head end of the electric battery piece are conveyed, the welding strip transfer device (3) is not conveyed to press the positioning clamp (8) at the same time.

Seventhly, the battery pieces with the welding strips placed pass through the position right below the light welding device (4) under the conveying of the battery conveyor (6); a heating lamp tube in the preheating unit (4-3) is electrified to emit light, and the battery piece and the welding strip are preheated; the heating lamp tube in the light welding unit (4-4) is electrified to emit light, and the battery piece and the welding strip are welded.

And step eight, when the pressing and positioning clamp (8) on the battery conveyor (6) reaches the position below the clamp backflow device (5), the clamp grabbing mechanism in the clamp backflow device (5) conveys the pressing and positioning clamp (8) pressed on the battery piece to the input end of the clamp conveyor (7).

The invention has the beneficial effects that:

1. according to the invention, the welding strip is pressed by the pressing and positioning fixture while being placed, so that the welding strip is prevented from shifting in conveying, and the yield of the battery string is greatly improved.

2. According to the invention, the IBC battery string is welded in a non-contact manner by the optical welding device, so that the processing efficiency is higher.

3. The solder strip transfer device, the clamp backflow device and the clamp conveyor are matched with each other, so that the continuous recycling of the pressing and positioning clamp can be realized, and the automation degree is higher.

Drawings

FIG. 1 is a schematic diagram of a soldered IBC solar cell string according to the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the construction of the battery conveyor of the present invention;

FIG. 4 is a schematic view of the pressing positioning fixture of the present invention;

FIG. 5 is a cross-sectional view of the pressing positioning jig of the present invention;

FIG. 6 is a schematic view of the combination of the solder strip feeding apparatus and the jig conveyor of the present invention;

FIG. 7 is a schematic view of the solder ribbon feeding apparatus of the present invention;

FIG. 8 is a schematic view of a first mechanical jaw of the present invention;

FIG. 9 is a schematic diagram of a second mechanical jaw of the present invention;

FIG. 10 is a schematic view of the first traverse mechanism hidden in the solder ribbon transfer apparatus of the present invention;

FIG. 11 is a rear view of the solder strip transfer apparatus of the present invention with the first traverse mechanism hidden;

FIG. 12 is a schematic structural view of the penetrating adsorption blocks in the present invention;

FIG. 13 is a schematic view of the construction of the optical welding apparatus of the present invention;

FIG. 14 is a schematic view of the second traverse mechanism hidden in the clip reflow apparatus of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, the present invention is used to produce an "IBC solar cell string". The structure of the IBC solar cell string is shown in fig. 1, and includes six or twelve cell pieces a and a plurality of solder strips B (when six cell pieces are connected into a cell string, the used cell pieces are integral cell pieces, and when twelve cell pieces are connected into a cell string, the used cell pieces are half-piece cell pieces). The battery pieces A are arranged at equal intervals in sequence. Two adjacent battery pieces A are connected through a group of welding strips B. And the welding strips B are four in total and are arranged along the direction vertical to the arrangement of the battery pieces. Two ends of the four welding strips B respectively cover the opposite side edges of the two adjacent battery pieces A. Two groups of adjacent welding strips are staggered; therefore, any one cell A is connected with eight welding strips B. The battery pieces A at the head end and the tail end are respectively provided with four welding strips B which only cover one battery piece.

As shown in fig. 2, the IBC solar cell tandem welding device includes a rack 1, a feeding robot, a tray, a solder strip feeding device 2, a solder strip transferring device 3, a light welding device 4, a clamp reflow device 5, a battery conveyor 6, a clamp conveyor 7, a pressing and positioning clamp 8, and a controller. The feeding robot and the material tray are both arranged at one end of the frame 1 and are positioned at the input end of the battery conveyor 6. The feeding robot adopts an industrial robot with an end effector as a pneumatic sucker. The feeding robot is used for grabbing the battery pieces from the material tray one by one and placing the battery pieces to the input end of the battery conveyor 6. The jig conveyor 7 is arranged side by side with the battery conveyor 6, and the conveying direction is opposite. The solder strip feeding device 2 is positioned below the output end of the clamp conveyor 7. The solder strip transfer device 3 is positioned above the input end of the battery conveyor 6 and the output end of the clamp conveyor 7. The solder ribbon transfer device 3, the optical soldering device 4, and the jig reflow device 5 are all disposed above the battery conveyor 6, and are arranged in sequence along the conveying direction of the battery conveyor 6. The solder strip transfer device 3 continuously transfers the pressing and positioning clamp 8 from the output end of the clamp conveyor 7 to the input end of the battery conveyor 6; the clip return apparatus 5 transfers the clips, which have completed pressing, from the battery conveyor 6 to the input end of the clip conveyor 7.

As shown in fig. 2 and 3, the battery conveyor 6 includes a driving roller 6-1, an adsorption conveying belt 6-2, a conveying motor 6-3, and a conveying adsorption plate 6-4. Two driving rollers 6-1 are respectively supported at two ends of the frame 1. The four adsorption conveying belts 6-2 are wound around the two transmission rollers 6-1 and tensioned through tensioning wheels. The four adsorption conveying belts 6-2 are arranged at intervals in sequence. Of the four adsorption conveying belts 6-2, the distance between two adsorption conveying belts 6-2 positioned at the outer side is larger than the width of the battery piece, and the distance between two adsorption conveying belts 6-2 positioned in the middle is smaller than the width of the battery piece. The two adsorption conveying belts 6-2 positioned in the middle are used for conveying the battery pieces, and the two adsorption conveying belts 6-2 positioned on the outer sides are used for conveying the pressing positioning clamps 8. The pressing and positioning clamp 8 is used for pressing the welding strips on the battery piece, so that the welding strips are prevented from shifting in the transportation process. The conveying motor 6-3 is fixed on the conveying frame, and the output shaft is fixed with one of the transmission rollers 6-1. The conveyer belt is provided with a plurality of waist-shaped holes which are sequentially arranged along the length direction of the conveyer belt. The conveying adsorption plate 6-4 is fixed on the conveying frame and is positioned below the conveying section (namely the straight section at the upper side) of each adsorption conveying belt 6-2. Four rows of adsorption holes are arranged on the top surface of the conveying adsorption plate 6-4. The four rows of adsorption holes are respectively aligned with the waist-shaped holes on the four adsorption conveyer belts 6-2. A cavity is arranged in the conveying adsorption plate 6-4. The cavity is connected with the adsorption holes and the air outlet holes on the conveying adsorption plate 6-4. The air outlet on the conveying adsorption plate 6-4 is connected with the air inlet of the air pump through a control air path. When the air pump is started, the conveying adsorption plate 6-4 generates suction force on the battery pieces conveyed on the conveying belt, and stability of the articles in the conveying process is guaranteed.

The jig conveyor 7 is a belt conveyor. Two clamp conveyer belts are arranged on the clamp conveyer 7. Two anchor clamps conveyer belts are side by side and the interval sets up. Side baffles are arranged on two sides of the top of the clamp conveyor 7. The distance between the two side baffles is equal to the length of the clamp. The jig conveyor 7 is used to convey the jigs. The output end of the clamp conveyor 7 is provided with a first limit sensor. The first limit sensor adopts an infrared diffuse reflection sensor. The first limit sensor is directed towards the input end of the gripper conveyor 7. The first limit sensor is used for detecting the position of the clamp closest to the first limit sensor, so that the conveying and positioning of the clamp are realized (namely, when the first limit sensor detects the clamp, the clamp conveyor 7 stops conveying).

As shown in figures 4 and 5, the pressing and positioning fixture 8 comprises an end fixing block 8-1, a connecting frame 8-2, a pressing wire 8-3 and a linkage pressing rod 8-4. The two ends of the connecting frame 8-2 and the two end fixing blocks 8-1 respectively form sliding pairs which slide along the thickness direction (namely the height direction) of the end fixing blocks 8-1. The two end fixing blocks 8-1 are fixed to each other. The link frame 8-2 can slide up and down. The opposite sides of the two end fixing blocks 8-1 are provided with grabbing grooves. The grabbing grooves are used for providing clamping force points for the solder strip transferring device 3 and the clamp reflow device 5. The connecting frame 8-2 is frame type, and the middle part is not shielded. Five pressing wires 8-3 which are sequentially arranged at intervals along the width direction of the connecting frame 8-2 are all fixed on the connecting frame 8-2. The two ends of the connecting frame 8-2 are provided with clamping grooves. Two linkage pressing rods 8-4 are arranged on the two end fixing blocks 8-1. The middle part of the linkage pressing rod 8-4 and the corresponding end fixing block 8-1 form a revolute pair. One end of the linkage pressing rod 8-4 is provided with a clamping column. The clamping columns extend into the corresponding clamping grooves on the connecting frame 8-2. The other end of the linkage pressing rod 8-4 is higher than the top surface of the end fixing block 8-1. When the end of the linkage pressing rod 8-4 far away from the connecting frame 8-2 is turned downwards, the prying connecting frame 8-2 slides upwards.

As shown in fig. 2, 6, 7 and 8, the solder strip feeding device 2 includes a feeding frame 2-1, a feeding guide rail 2-2, a material pulling mechanism, a clamping and cutting mechanism and a solder strip unwinding mechanism. The feeding frame 2-1 is fixed with the frame 1. Two feeding guide rails 2-2 are respectively fixed on two sides of the top of the feeding frame 2-1. The material pulling mechanism comprises a material pulling sliding table 2-3, a first material supply driving assembly and a first mechanical clamping jaw 2-4. Two ends of the bottom of the material pulling sliding table 2-3 and the two feeding guide rails 2-2 form sliding pairs respectively. The first feeding driving assembly comprises a first feeding synchronous belt, a first feeding synchronous wheel and a first feeding driving motor 2-5. The two first feeding synchronous wheels are respectively supported at two ends of the feeding frame 2-1 and are connected through a first feeding synchronous belt. The material pulling sliding table 2-3 is fixed with the first material supply synchronous belt. The first feeding driving motor 2-5 is fixed on the feeding frame 2-1, and the output shaft is fixed with one first feeding synchronizing wheel. Four first mechanical clamping jaws 2-4 which are sequentially arranged are arranged on the material pulling sliding table 2-3. The first mechanical clamping jaw 2-4 comprises a first jaw frame 2-4-1, a first clamping cylinder 2-4-2, a first connecting rod 2-4-3 and a first single jaw 2-4-4. The first claw frame 2-4-1 is fixed on the material pulling sliding table 2-3. The first clamping cylinder 2-4-2 is fixed on the first claw frame 2-4-1. The inner ends of the two first connecting rods 2-4-3 are hinged with the outer end of a piston rod of the first clamping cylinder 2-4-2, and the outer ends of the two first connecting rods are hinged with the inner ends of the two first single claws 2-4-4 respectively; the middle parts of the two first single claws 2-4-4 are hinged with the first claw frame 2-4-1. The outer ends of the two first single claws 2-4-4 are used for clamping the end of the welding strip.

As shown in fig. 6, 7 and 9, the clamping and cutting mechanism comprises a clamping and cutting slipway 2-6, a second feed drive assembly, a cutting assembly 2-7 and a second mechanical clamping jaw 2-8. The two ends of the bottom of the clamping and cutting sliding table 2-6 and the two feeding guide rails 2-2 respectively form a sliding pair. The second feeding driving assembly comprises a second feeding synchronous belt, a second feeding synchronous wheel and second feeding driving motors 2-9. The two second feeding synchronous wheels are respectively supported at two ends of the feeding frame 2-1 and are connected through a second feeding synchronous belt. The clamping and cutting sliding table 2-6 is fixed with a second feeding synchronous belt. The second feeding driving motor 2-9 is fixed on the feeding frame 2-1, and the output shaft is fixed with one of the second feeding synchronizing wheels. Four second mechanical clamping jaws 2-8 which are sequentially arranged are arranged on the clamping and cutting sliding table 2-6. The four second mechanical jaws 2-8 are aligned with the four first mechanical jaws 2-4, respectively. The second mechanical clamping jaw 2-8 comprises a second jaw frame 2-8-1, a second clamping cylinder 2-8-2, a fixed clamping block 2-8-3 and a movable clamping block 2-8-4. The second claw frame 2-8-1 is fixed on the clamping cutting sliding table 2-6. The fixed clamping blocks 2-8-3 are fixed at the top of the second clamping frame. The middle part of the movable clamping block 2-8-4 is hinged with the fixed clamping block 2-8-3. The outer ends of the movable clamping blocks 2-8-4 are provided with horizontal clamping rods. In the turning process of the movable clamping block 2-8-4, the clamping rod can be contacted with the top surface of the fixed clamping block 2-8-3. The clamping rod is matched with the fixed clamping blocks 2-8-3 and can clamp the welding strip.

The severing assembly 2-7 is arranged between the first mechanical jaw 2-4 and the second mechanical jaw 2-8. The cutting assembly 2-7 comprises a cutting frame, an upper tool rest, a lower tool rest, an upper cutting cylinder 2-7-1 and a lower cutting cylinder 2-7-2. The cutting frame is fixed on the clamping and cutting sliding table 2-6. The upper tool rest and the lower tool rest are arranged up and down and form a sliding pair sliding along the vertical direction together with the cutting frame. The upper knife rest and the lower knife rest are both fixed with cutters. The two cutters correspond in position (are arranged up and down and staggered with each other), so that the function of shearing the welding strip can be realized. The upper cutting cylinder 2-7-1 and the lower cutting cylinder 2-7-2 are fixed with the cutting frame. The piston rods of the upper cutting cylinder 2-7-1 and the lower cutting cylinder 2-7-2 are respectively fixed with the upper tool rest and the lower tool rest.

Four guide rings which are arranged in sequence are fixed on the feeding frame 2-1. The four guide rings are located on the side of the second mechanical jaw 2-8 remote from the first mechanical jaw 2-4 and are aligned with the four second mechanical jaws 2-8, respectively. The four solder strip unwinding mechanisms are all installed on the rack 1 and used for continuously supplying four solder strips. The solder strip unwinding mechanism belongs to the prior art and is not described herein. In the working process, the welding strips released by the four welding strip unwinding mechanisms respectively pass through the corresponding guide rings, pass between the fixed clamping blocks 2-8-3 corresponding to the second mechanical clamping jaws 2-8 and the clamping rod, and pass through the two cutters, and the end parts of the welding strips are clamped by the corresponding first mechanical clamping jaws 2-4; when the upper tool rest and the lower tool rest slide relatively, the welding strip is cut off. After the welding strip is cut off and taken away, the material pulling sliding table 2-3 and the clamping and cutting sliding table 2-6 slide relatively, so that the first mechanical clamping jaw 2-4 can clamp a new end face generated after the welding strip is cut off.

As shown in fig. 2, 10 and 11, the solder strip transfer device 3 includes a first traverse mechanism 3-1, a first lifting mechanism and a solder strip clamp synchronous gripping mechanism. The first transverse moving mechanism 3-1 comprises a first transverse moving frame, a first transverse moving guide rail, a first transverse moving sliding table and a first transverse moving driving assembly. The first cross sliding frame is fixed on the frame 1. The first transverse moving guide rail is fixed on the first transverse moving frame and is arranged along the width direction of the rack 1; the first transverse sliding table and the first transverse sliding guide rail form a sliding pair. The first transverse moving driving assembly comprises a first transverse moving synchronous belt, a first transverse moving synchronous wheel and a first transverse moving driving motor. The two first transverse moving synchronous wheels are respectively supported at two ends of the first transverse moving frame and are connected through the first transverse moving synchronous belt. The first transverse sliding table is fixed with the first transverse sliding synchronous belt. The first transverse moving driving motor is fixed on the first transverse moving frame, and the output shaft is fixed with one of the first transverse moving synchronous wheels.

The first lifting mechanism comprises a first lifting frame 3-2, a first lifting screw 3-3, a first lifting motor 3-4 and a first lifting sliding table. The first lifting frame 3-2 is fixed with the first transverse moving slide block; a first lifting screw rod 3-3 which is vertically arranged is supported on the first lifting frame 3-2. The first lifting motor 3-4 is fixed on the first lifting frame 3-2, and the output shaft is fixed with the first lifting screw rod 3-3. The first lifting sliding table and the first lifting frame 3-2 form a sliding pair, and the first lifting sliding table and the first lifting screw rod 3-3 form a screw pair.

The synchronous grabbing mechanism of the welding strip clamp comprises a first grabbing support 3-5, a first welding strip feeding adsorption assembly, a second welding strip feeding adsorption assembly and a clamp clamping assembly. The first grabbing bracket 3-5 is fixed on the first lifting sliding table. The clamp gripping assembly comprises two single-sided jaws 3-6 and two single-sided pushers 3-11. The single-side clamping jaws 3-6 are respectively arranged at two sides of the first grabbing bracket 3-5. The single-side clamping jaw 3-6 comprises a first grabbing cylinder, a second connecting rod and a first hook jaw 3-6-1. The middle part of the first claw 3-6-1 is hinged with the first grabbing bracket 3-5 respectively. The first grabbing cylinder is fixed with the first grabbing bracket 3-5. One end of the second connecting rod is hinged with a piston rod of the first grabbing cylinder, and the other end of the second connecting rod is hinged with one end of the first hook claw 3-6-1. When the first grabbing cylinders in the two single-side clamping jaws 3-6 are all pushed out, the ends, far away from the second connecting rod, of the two first hook claws 3-6-1 are turned downwards, at the moment, the distance between the two first hook claws 3-6-1 is smaller than the length of the pressing positioning fixture 8, so that the two first hook claws 3-6-1 can respectively extend into grabbing grooves of two end fixing blocks 8-1 on the pressing positioning fixture 8, and the pressing positioning fixture 8 is clamped.

Two single-sided pressure elements 3-11 are arranged centrally on the first gripper bracket 3-5 and between the two single-sided gripping jaws 3-6. The single-side pushing member 3-11 includes a pushing cylinder and a pushing block. The pushing cylinder is fixed on the first grabbing bracket 3-5, and the piston rod is arranged downwards. The piston rod is fixed with a push block. The positions of the two push blocks correspond to two end fixing blocks 8-1 on a pressing and positioning clamp 8 clamped by the two unilateral clamping jaws 3-6 respectively. When the two push blocks are pushed out, the linkage pressing rods 8-4 on the two end fixing blocks 8-1 are respectively pushed to turn over, so that the connecting frame 8-2 on the pressing and positioning fixture 8 moves upwards.

As shown in fig. 10, 11 and 12, the first solder strip loading adsorption assembly is located between the two single-side pushing elements 3-11, and comprises a first pushing-down cylinder 3-7 and an insertion adsorption block 3-8. The first pushing-down cylinder 3-7 is fixed on the first grabbing bracket 3-5, and a piston rod is arranged downwards. The piston rod is fixed with the interpenetration adsorption blocks 3-8. The interpenetration adsorption block 3-8 is composed of a base plate 3-8-1 and six vertical adsorption plates 3-8-2 which are integrally formed. The tops of the six vertical adsorption plates 3-8-2 which are vertically arranged are connected with the base plate 3-8-1. Six vertical adsorption plates 3-8-2 are arranged at equal intervals in sequence. The sum of the width of the vertical adsorption plate 3-8-2 and the distance between two adjacent vertical adsorption plates 3-8-2 is equal to the center distance of two adjacent pressing wires 8-3 in the pressing and positioning fixture 8. The distance between two adjacent vertical adsorption plates 3-8-2 is larger than the diameter of the pressing wire 8-3; so that the six vertical adsorption plates 3-8-2 can pass through the gaps of the pressing wires 8-3 on the pressing and positioning fixture 8. The bottom of each vertical adsorption plate 3-8-2 is provided with four first adsorption grooves 3-8-3 which are arranged at equal intervals in sequence. The bottoms of the four first adsorption grooves 3-8-3 are provided with first adsorption ports. The center distance between two adjacent first adsorption grooves 3-8-3 is equal to the center distance between two adjacent guide rings on the welding strip feeding device 2. The four first adsorption grooves 3-8-3 on one vertical adsorption plate 3-8-2 can respectively adsorb four cut welding strips on the welding strip feeding device 2. The base plate 3-8-1 and each vertical adsorption plate 3-8-2 are internally provided with air passages which are mutually connected, and the base plate 3-8-1 is provided with an air extraction opening. The air pumping port on the substrate 3-8-1 is connected with the air pump through a control air path. Four second adsorption grooves on one vertical adsorption plate 3-8-2 can respectively adsorb four cut-off welding strips on the welding strip feeding device 2.

The second welding strip feeding adsorption assembly is positioned on one side, away from the input end of the clamp conveyor 7, of the first welding strip feeding adsorption assembly. The second welding strip feeding adsorption component comprises a second push-down cylinder 3-9 and a horizontal adsorption plate 3-10. The second push-down cylinder 3-9 is fixed on the first grabbing bracket 3-5, and a piston rod is arranged downwards. The piston rod is fixed with the horizontal adsorption plate 3-10. The bottom of each horizontal adsorption plate 3-10 is provided with four second adsorption grooves which are sequentially arranged at equal intervals. The second adsorption groove is strip-shaped, and the length direction of the second adsorption groove is arranged along the conveying direction of the battery conveyor. The four second adsorption grooves on the horizontal adsorption plate 3-10 are respectively aligned with the four first adsorption grooves 3-8-3 on the vertical adsorption plate 3-8-2. A plurality of second adsorption ports are formed in the second adsorption groove. Air passages connected with the second adsorption ports are arranged in the horizontal adsorption plates 3-10. The horizontal adsorption plates 3-10 are provided with air extraction ports. The air pumping ports on the horizontal adsorption plates 3-10 are connected with an air pump through a control air path. When the air pump pumps air from the air pumping ports of the substrate 3-8-1 and the horizontal absorption plate 3-10, the first absorption port on the vertical absorption plate 3-8-2 and the second absorption port on the horizontal absorption plate 3-10 generate absorption force.

As shown in fig. 2 and 13, the light welding apparatus 4 includes a welding stand 4-1, a light welding lateral adjustment assembly, a longitudinal adjustment assembly, a turning assembly, a mounting stand 4-2, a preheating unit 4-3, and a light welding unit 4-4. The welding frame 4-1 is fixed on the frame 1. The light welding transverse adjusting assembly comprises a transverse adjusting slide rail 4-5, a transverse adjusting frame 4-6, a transverse adjusting bolt 4-7 and a locking block 4-8. The transverse adjusting slide rail 4-5 is fixed on the welding frame 4-1. The transverse adjusting frame 4-6 and the transverse adjusting slide rail 4-5 form a sliding pair. The horizontally arranged transverse adjusting bolt 4-7 and the welding frame 4-1 form a rotation pair, and the horizontally arranged transverse adjusting bolt 4-6 forms a screw pair. The transverse adjustment of the transverse adjusting frame 4-6 can be realized by rotating the transverse adjusting bolt 4-7. The transverse adjusting bolt 4-7 is locked by a locking block 4-8. The locking blocks 4-8 are composed of spanner bolts and clamping blocks with deformation joints. The spanner bolt can extrude the deformation joint by rotating, so that the locking block 4-8 clamps the transverse adjusting bolt 4-7.

The longitudinal adjusting assembly comprises a longitudinal adjusting slide rail, a longitudinal adjusting frame 4-9 and a longitudinal adjusting bolt 4-10. The vertical adjusting slide rail is fixed with the horizontal adjusting frame 4-6. The longitudinal adjusting frames 4-9 and the longitudinal adjusting slide rail form a sliding pair. The top of the longitudinal adjusting frame 4-9 is provided with an adjusting threaded hole. The longitudinal adjusting bolts 4-10 and the adjusting threaded holes on the longitudinal adjusting frames 4-9 form a screw pair and abut against the transverse adjusting frames 4-6. The height of the longitudinal adjusting frame 4-9 can be adjusted by rotating the longitudinal adjusting bolt 4-10. The overturning assembly comprises an overturning frame 4-11 and an overturning cylinder 4-12. The roll-over stand 4-11 is hinged with the longitudinal adjusting stand 4-9. The end part of the cylinder body of the overturning cylinder 4-12 is hinged with the longitudinal adjusting frame 4-9. The outer end of a piston rod of the overturning cylinder 4-12 is hinged with the overturning frame 4-11. When the overturning cylinder 4-12 is pushed out, the overturning frame 4-11 overturns. The preheating unit 4-3 and the light welding unit 4-4 are both arranged on the roll-over stand 4-11. The preheating unit 4-3 is positioned between the light welding unit 4-4 and the synchronous grabbing mechanism of the welding strip clamp. In the working state, the preheating unit 4-3 and the light welding unit 4-4 are both arranged downwards.

The preheating unit 4-3 and the light welding unit 4-4 have the same structure and respectively comprise a lampshade, a heating lamp tube and a light welding radiator 4-13. The light-welded heat sink 4-13 is mounted on top of the lamp housing. The heating lamp tube is arranged in the lampshade. The preheating unit 4-3 and the light welding unit 4-4 weld the battery plate and the welding strip together by heating the battery plate and the welding strip.

As shown in fig. 2 and 14, the jig reflow apparatus 5 includes a second traverse mechanism 5-1, a second elevating mechanism, and a jig gripping mechanism. The second transverse moving mechanism 5-1 comprises a second transverse moving frame, a second transverse moving guide rail, a second transverse moving sliding table and a second transverse moving driving assembly. The second transverse moving frame is fixed on the frame 1. The second transverse moving guide rail is fixed on the second transverse moving frame and is arranged along the width direction of the rack 1; the second transverse sliding table and the second transverse sliding guide rail form a sliding pair. The second transverse moving driving assembly comprises a second transverse moving synchronous belt, a second transverse moving synchronous wheel and a second transverse moving driving motor. And the two second transverse moving synchronous wheels are respectively supported at two ends of the second transverse moving frame and are connected through the second transverse moving synchronous belt. The second transverse sliding table is fixed with the second transverse sliding synchronous belt. The second transverse moving driving motor is fixed on the second transverse moving frame, and the output shaft is fixed with one of the second transverse moving synchronous wheels.

The second lifting mechanism comprises a second lifting frame 5-2, a backflow lifting cylinder 5-3 and a second lifting sliding table 5-4. The second lifting frame 5-2 is fixed with the second transverse moving slide block; and a second lifting screw rod which is vertically arranged is supported on the second lifting frame 5-2. The backflow lifting cylinder 5-3 is fixed on the second lifting frame 5-2, and the piston rod is fixed with the second lifting sliding table 5-4.

The clamp grabbing mechanism comprises a second grabbing bracket 5-5, two second grabbing cylinders 5-6 and two clamping jaw assemblies. And a second grabbing bracket 5-5 is fixed on the second lifting sliding table 5-4. The clamping jaw assembly comprises a turnover strip 5-8 and two second hook claws 5-7. The two second hook claws 5-7 and the turning strips 5-8 form sliding pairs and are positioned by fastening screws. The two clamping jaw assemblies are respectively arranged at two sides of the second grabbing bracket 5-5. The cylinder bodies of the two second grabbing cylinders 5-6 are hinged with the second grabbing brackets 5-5. Piston rods of the two second grabbing cylinders 5-6 are hinged with the two turning strips 5-8 respectively. When the two second grabbing cylinders 5-6 are all pushed out, the distance between the second hook claws 5-7 in the two clamping jaw assemblies is smaller than the length of the pressing positioning fixture 8, so that the two second hook claws 5-7 can respectively extend into grabbing grooves of two end fixing blocks 8-1 on the pressing positioning fixture 8, and the pressing positioning fixture 8 is clamped.

step one, placing a box body filled with the battery piece into a material tray. The feeding robot grabs the battery pieces one by one from the tray and places the battery pieces on the battery conveyor 6.

And step two, the battery conveyors 6 convey the battery pieces, and when one battery piece reaches the position below the solder strip transfer device 3, the corresponding battery conveyor 6 stops conveying. The jig conveyor 7 conveys a press-positioning jig 8 as a working press-positioning jig to the lower side of the solder ribbon transfer apparatus 3.

Meanwhile, four first mechanical clamping jaws 2-4 in the welding strip feeding device 2 respectively clamp the end parts of four welding strips; the material pulling sliding table 2-3 and the clamping and cutting sliding table 2-6 reversely slide, so that the length of the welding strip between the first mechanical clamping jaw 2-4 and the cutter in the cutting assembly 2-7 reaches a preset value. The four second mechanical clamping jaws 2-8 respectively clamp the corresponding solder strips. The cutting assembly 2-7 cuts off the four solder strips. The ends of the four welding strips, which are far away from the first mechanical clamping jaws 2-4, are positioned right below the working pressing positioning fixture.

And step three, the welding strip clamp synchronous grabbing mechanism in the welding strip transfer device 3 moves right above the four welding strips, and the first lifting mechanism drives the welding strip clamp synchronous grabbing mechanism to move downwards, so that the first hook claws 3-6-1 on the two single-side clamping jaws 3-6 respectively reach two ends of the working pressing and positioning clamp. The two unilateral clamping jaws 3-6 respectively hook two ends of the working pressing positioning fixture; then, the two single-side pushing pieces 3-11 are pushed out, so that the connecting frame 8-2 in the working pressing positioning fixture is lifted upwards.

Pushing out by the first downward pushing cylinder 3-7 and the second downward pushing cylinder 3-9; after each vertical adsorption plate 3-8-2 on the interpenetration adsorption block 3-8 penetrates through the gap between each pressing wire 8-3 on the working pressing positioning fixture, each first adsorption groove 3-8-3 at the bottom of each vertical adsorption plate 3-8-2 is in contact with the corresponding welding strip respectively. And the second adsorption grooves at the bottoms of the horizontal adsorption plates 3-10 are respectively contacted with the corresponding welding strips.

Step five, inserting the adsorption blocks 3-8 and the horizontal adsorption plates 3-10 to adsorb the four welding strips; the four first mechanical jaws 2-4 are released.

The welding strip transfer device 3 conveys the working pressing positioning fixture and the four welding strips to the position right above the battery piece of the battery conveyor, and places the welding strips and the working pressing positioning fixture on the battery piece; the working pressing positioning fixture is positioned above one battery piece, and the welding strip covers the two battery pieces. The two single-side pushing and pressing pieces 3-11 retract, so that the connecting frame 8-2 in the working pressing and positioning clamp moves downwards; the pressing wire 8-3 on the working pressing positioning fixture presses one end of the four welding strips, so that the welding strips are guaranteed not to move in the conveying process.

The part of the welding strip which is not pressed by the working pressing and positioning clamp is pressed in the next conveying process of the welding strip and the pressing and positioning clamp 8. Carrying the welding strips and the pressing positioning clamp 8 twice; the positions of the four welding strips in the previous conveying are staggered with those of the four welding strips in the next conveying; a battery string as shown in fig. 1 is formed. One battery string includes six or twelve battery cells. Four welding strips only covering one battery piece are arranged on the battery piece at the head end and the battery piece at the tail end; the eight welding strips only covering one battery piece are also conveyed by the welding strip transfer device 3; when four short solder strips of the length of the battery piece at the head end are placed, the solder strip transfer device 3 is not carried at the same time to press the positioning clamp 8.

Seventhly, the battery pieces with the welding strips placed pass through the position right below the light welding device 4 under the conveying of the battery conveyor 6; a heating lamp tube in the preheating unit 4-3 is electrified to emit light, and the battery piece and the welding strip are preheated; and the heating lamp tube in the optical welding unit 4-4 is electrified to emit light, and the battery plate and the welding strip are welded.

And step eight, when the pressing and positioning clamp 8 on the battery conveyor 6 reaches the position below the clamp backflow device 5, a clamp grabbing mechanism in the clamp backflow device 5 clamps the pressing and positioning clamp 8 pressed on the battery piece, carries the battery piece to the input end of the clamp conveyor 7, and waits for the next time to be carried to the battery conveyor 6 by the solder strip transfer device 3.

The battery conveyor 6 can continuously output the IBC battery strings by repeating the cycle.

Claims

1. An IBC solar cell string light welding device, comprising a frame (1), a welding strip feeding device (2), a welding strip transferring device (3), a light welding device (4), a fixture reflow device (5), A battery conveyor (6), a clamp conveyor (7) and a pressing and positioning clamp (8); it is characterized in that: the clamp conveyor (7) is located at one side of the battery conveyor (6); a welding tape feeding device (2) is located below the output end of the fixture conveyor (7); the welding tape transfer device (3) is located above the input end of the battery conveyor (6) and the output end of the fixture conveyor (7); the welding tape transfer device (3), the light The welding device (4) and the fixture reflow device (5) are arranged in sequence along the conveying direction of the battery conveyor (6); the light welding device (4) is provided with a heating lamp; The welding tape transfer device (3) will transfer the pressing and positioning fixture (8) from the output end of the fixture conveyor (7) to the input end of the battery conveyor (6); the fixture reflow device (5) will complete the pressing The pressing positioning fixture (8) is transferred from the battery conveyor (6) to the input end of the fixture conveyor (7); the battery conveyor (6) adopts a vacuum adsorption belt conveyor; the battery conveyor (6) is provided with Four adsorption conveyor belts side by side; the spacing between the two adsorption conveyor belts located on the outer side of the four adsorption conveyor belts in the battery conveyor (6) is greater than the width of the battery sheet;

The pressing and positioning fixture (8) comprises an end fixing block (8-1), a connecting frame (8-2), a pressing wire (8-3) and a linkage pressing rod (8-4); the connecting frame (8-2) 2) The two ends and the two end fixing blocks (8-1) respectively constitute a sliding pair that slides along the thickness direction of the end fixing block (8-1); the two end fixing blocks (8-1) are mutually fixed ; The opposite sides of the two end fixing blocks (8-1) are provided with grabbing grooves; the plurality of pressing wires (8-3) arranged at intervals along the width direction of the connecting frame (8-2) are all fixed On the connecting frame (8-2); both ends of the connecting frame (8-2) are provided with snap-in grooves; both end fixing blocks (8-1) are provided with linkage pressing rods (8-4) ;The middle of the linkage pressing rod (8-4) and the corresponding end fixing block (8-1) form a rotating pair; the other end of the linkage pressing rod (8-4) is higher than the top surface of the end fixing block (8-1);

The welding ribbon feeding device (2) includes a feeding rack (2-1), a feeding guide rail (2-2), a material pulling mechanism, a clamping and cutting mechanism and a welding ribbon unwinding mechanism; the feeding rack (2) -1) Fixed with the frame (1); the feeding guide rail (2-2) is fixed on the feeding frame (2-1); the feeding mechanism includes a feeding sliding table (2-3), a first feeding drive The assembly and the first mechanical gripper (2-4); the material pulling sliding table (2-3) and the feeding guide rail (2-2) constitute a sliding pair; the material pulling sliding table (2-3) is driven by the first feeding Component drive; four first mechanical grippers (2-4) arranged in sequence are installed on the pulling slide table (2-3);

The clamping and cutting mechanism includes a clamping and cutting sliding table (2-6), a second feeding drive assembly, a cutting assembly (2-7) and a second mechanical clamping jaw (2-8); the clamping and cutting sliding table (2-8) -6) It forms a sliding pair with two feeding guide rails (2-2); the clamping and cutting slide table (2-6) is driven by the second feeding drive assembly; four second mechanical jaws (2-8); the four second mechanical jaws (2-8) are aligned with the four first mechanical jaws (2-4); the cutting assembly (2-7) is provided between the first mechanical jaw (2-4) and the second mechanical jaw (2-8);

The welding strip transfer device (3) includes a first traverse mechanism (3-1), a first lifting mechanism and a synchronous grasping mechanism for a welding strip clamp; the first traverse mechanism (3-1) is installed on the frame (3-1). 1) on; the first lifting mechanism is installed on the first traverse mechanism (3-1); the synchronous grasping mechanism of the welding belt fixture is installed on the first lifting mechanism; the synchronous grasping mechanism of the welding belt fixture includes a first grasping bracket (3-5), the first welding strip feeding adsorption assembly, the second welding strip feeding adsorption assembly and the clamp clamping assembly; the clamp clamping assembly includes two single-sided clamping jaws (3-6) and two single-sided clamping jaws The pushing member (3-11); the single-sided clamping jaws (3-6) are respectively arranged on both sides of the first grabbing bracket (3-5); the two single-sided clamping jaws (3-6) are respectively clamped and pressed Both ends of the positioning fixture (8); the two unilateral pressing members (3-11) are centrally arranged on the first grabbing bracket (3-5), and are located on the two unilateral clamping jaws (3-6) between the two unilateral pressing pieces (3-11) respectively pressing the linkage pressing rods (8-4) on the two end fixing blocks (8-1);

The first welding strip feeding and adsorption assembly is located between the two unilateral pressing parts (3-11), and includes a first push-down cylinder (3-7) and an interpenetrating adsorption block (3-8); interpenetrating adsorption The block (3-8) moves up and down through the first push-down cylinder (3-7); the interspersed adsorption block (3-8) consists of an integrally formed base plate (3-8-1) and a plurality of vertical adsorption plates (3- 8-2); the tops of the vertically arranged multiple vertical adsorption plates (3-8-2) are all connected to the base plate (3-8-1); the vertical adsorption plates (3-8-2) are in sequence, etc. Arranged at intervals; the sum of the width of the vertical adsorption plate (3-8-2) and the distance between the two adjacent vertical adsorption plates (3-8-2) is equal to the two adjacent pressing wires in the pressing positioning fixture (8). (8-3) center distance; the distance between two adjacent vertical adsorption plates (3-8-2) is greater than the diameter of the pressing wire (8-3); each vertical adsorption plate (3-8-2) The bottoms of the four first adsorption grooves (3-8-3) are arranged at equal intervals in sequence; the bottoms of the four first adsorption grooves (3-8-3) are all provided with first adsorption ports;

The second welding strip feeding and adsorbing component is located on the side of the first welding strip feeding and adsorbing component away from the input end of the fixture conveyor (7); the second welding strip feeding and adsorbing component includes a second push-down cylinder (3-9 ) and the horizontal adsorption plate (3-10); the horizontal adsorption plate (3-10) moves up and down through the second push-down cylinder (3-9); the bottom of the horizontal adsorption plate (3-10) is provided with sequential Four second suction grooves arranged at equal intervals; four second suction grooves on the horizontal suction plate (3-10) and four first suction grooves on the vertical suction plate (3-8-2) The grooves (3-8-3) are aligned respectively; a plurality of second adsorption ports are opened on the second adsorption groove;

The fixture return device (5) includes a second traverse mechanism (5-1), a second lift mechanism and a fixture grabbing mechanism; the second traverse mechanism (5-1) is mounted on the frame (1); The second lifting mechanism is installed on the second traverse mechanism (5-1); the clamp grabbing mechanism is installed on the second lifting mechanism.

2. An IBC solar cell string light welding device according to claim 1, characterized in that: it further comprises a feeding robot and a feeding tray; both the feeding robot and the feeding tray are installed at one end of the frame (1), and It is located at the input end of the battery conveyor (6); the feeding robot adopts an industrial robot whose end effector is a pneumatic suction cup.

3. An IBC solar cell string light welding device according to claim 1, characterized in that: the battery conveyor (6) comprises a transmission roller (6-1), an adsorption conveyor belt (6-2), The conveying motor (6-3) and the conveying adsorption plate (6-4); the two driving rollers (6-1) are respectively supported on both ends of the frame (1); the four adsorption conveying belts (6-2) are all bypassed Two drive rollers (6-1), which are tensioned by a tensioning wheel; four adsorption conveyor belts (6-2) are arranged at intervals in sequence; among the four adsorption conveyor belts (6-2), the two adsorption conveyor belts located in the middle The distance of (6-2) is smaller than the width of the battery sheet; the conveying motor (6-3) is fixed on the conveying frame, and the output shaft is fixed with one of the transmission rollers (6-1); a plurality of waist-shaped holes arranged in sequence in the direction; the conveying adsorption plate (6-4) is fixed on the conveying frame and is located below the conveying section of each adsorption conveying belt (6-2); the top of the conveying adsorption plate (6-4) is There are four rows of adsorption holes on the surface; the four rows of adsorption holes are respectively aligned with the waist-shaped holes on the four adsorption conveyor belts (6-2); the conveying adsorption plate (6-4) is provided with cavities; the cavities are connected to conveying adsorption The adsorption hole and the air outlet on the plate (6-4); the air outlet on the conveying adsorption plate (6-4) is connected with the air inlet of the air suction pump.

4. An IBC solar cell string light welding device according to claim 1, characterized in that: the clamp conveyor (7) is provided with two clamp conveyor belts; the two clamp conveyor belts are arranged side by side and at intervals ; Both sides of the top of the clamp conveyor (7) are provided with side baffles; the distance between the two side baffles is equal to the length of the pressing and positioning clamp (8); the output end of the clamp conveyor (7) is provided with a first limit The sensor; the first limit sensor adopts an infrared diffuse reflection sensor; the first limit sensor faces the input end of the clamp conveyor (7).

5 . The IBC solar cell string light welding device according to claim 1 , wherein the first feeding drive assembly comprises a first feeding synchronous belt, a first feeding synchronizing wheel and a first feeding driving motor. 6 . (2-5); the two first feeding synchronizing wheels are respectively supported on both ends of the feeding frame (2-1), and are connected by the first feeding synchronizing belt; a feeding synchronous belt is fixed; the first feeding driving motor (2-5) is fixed on the feeding frame (2-1), and the output shaft is fixed with one of the first feeding synchronizing wheels;

The second feeding drive assembly includes a second feeding synchronous belt, a second feeding synchronizing wheel and a second feeding driving motor (2-9); the two second feeding synchronizing wheels are respectively supported on the feeding frame (2-9). 1), and are connected by the second feeding synchronous belt; the clamping and cutting slide table (2-6) is fixed with the second feeding synchronous belt; the second feeding driving motor (2-9) is fixed on the feeding frame (2-1), and the output shaft is fixed with one of the second feeding synchronizing wheels;

The first mechanical gripper (2-4) includes a first gripper frame (2-4-1), a first clamping cylinder (2-4-2), a first connecting rod (2-4-3) and a first Single claw (2-4-4); the first claw frame (2-4-1) is fixed on the pulling slide table (2-3); the first clamping cylinder (2-4-2) is fixed on the first on the claw frame (2-4-1); the inner ends of the two first connecting rods (2-4-3) are hinged with the outer ends of the piston rods of the first clamping cylinder (2-4-2), and the outer ends hinged with the inner ends of the two first single claws (2-4-4) respectively; the middle parts of the two first single claws (2-4-4) are hinged with the first claw frame (2-4-1);

The second mechanical gripper (2-8) includes a second gripper frame (2-8-1), a second gripping cylinder (2-8-2), a fixed gripper block (2-8-3) and a movable gripper block (2-8-4); the second claw frame (2-8-1) is fixed on the clamping and cutting sliding table (2-6); the fixed clamping block (2-8-3) is fixed on the top of the second clamping frame ; The middle of the movable clamp block (2-8-4) is hinged with the fixed clamp block (2-8-3); the outer end of the movable clamp block (2-8-4) is provided with a horizontal clamp rod;

The cutting assembly (2-7) includes a cutting frame, an upper tool frame, a lower tool frame, an upper cutting cylinder (2-7-1) and a lower cutting cylinder (2-7-2); On the sliding table (2-6); the upper knife rest and the lower knife rest are arranged up and down, and both form a sliding pair with the cutting frame that slides in the vertical direction; the upper knife rest and the lower knife rest are fixed with cutting knives; two The positions of the cutters correspond; the upper cutting cylinder (2-7-1) and the lower cutting cylinder (2-7-2) are fixed with the cutting frame; the upper cutting cylinder (2-7-1) and the lower cutting cylinder (2-7) The piston rod of -2) is fixed with the upper tool rest and the lower tool rest respectively; four guide rings arranged in sequence are fixed on the feeding frame (2-1); the four guide rings are located on the second mechanical gripper (2-8). ) away from the side of the first mechanical gripper (2-4), and are aligned with the four second mechanical grippers (2-8) respectively; the four welding tape unwinding mechanisms are installed on the frame (1); The welding strips released by the four welding strip unwinding mechanisms respectively pass through the corresponding guide rings and between the fixed clamping blocks (2-8-3) and the clamping rods corresponding to the second mechanical clamping jaws (2-8), and Passing between the two cutting knives, the end of the welding tape is clamped by the corresponding first mechanical clamping jaws (2-4).

6. An IBC solar cell string light welding device according to claim 1, characterized in that: the single-sided clamping jaw (3-6) comprises a first grabbing cylinder, a second connecting rod and a first hook claw (3-6-1); the middle part of the first hook (3-6-1) is hinged with the first grab bracket (3-5) respectively; the first grab cylinder and the first grab bracket (3- 5) Fixed; one end of the second connecting rod is hinged with the piston rod of the first grabbing cylinder, and the other end is hinged with one end of the first hook (3-6-1); the one-sided pusher (3-11) includes The push cylinder and the push block are pressed; the push cylinder is fixed on the first grab bracket (3-5), and the piston rod is set downward; the piston rod is fixed with a push block; the positions of the two push blocks are the same as those of the The two end fixing blocks (8-1) on the pressing and positioning fixture (8) clamped by the side clamping jaws (3-6) correspond respectively.

7. An IBC solar cell string light welding device according to claim 1, characterized in that: the gripper grasping mechanism comprises a second grasping bracket (5-5), two second grasping cylinders ( 5-6) and two clamping jaw assemblies; the second grab bracket (5-5) is fixed on the second lifting slide (5-4); the clamping jaw assembly includes a turning bar (5-8) and two Two hook claws (5-7); the two second hook claws (5-7) form a sliding pair with the turning bar (5-8), and are positioned by tightening screws; the two jaw assemblies are respectively arranged on the first Both sides of the second grabbing brackets (5-5); the cylinder bodies of the two second grabbing cylinders (5-6) are hinged with the second grabbing brackets (5-5); the two second grabbing cylinders (5-5) The piston rod of 5-6) is hinged with the two turning bars (5-8) respectively.

8. An IBC solar cell string light welding device according to claim 1, characterized in that: the light welding device (4) comprises a welding frame (4-1), a light welding lateral adjustment component, and a vertical adjustment component , turning assembly, mounting frame (4-2), preheating unit (4-3) and light welding unit (4-4); welding frame (4-1) is fixed on the frame (1); light welding lateral adjustment assembly Including the lateral adjustment slide rail (4-5), the lateral adjustment frame (4-6), the lateral adjustment bolt (4-7) and the locking block (4-8); the lateral adjustment slide rail (4-5) is fixed in the welding The horizontal adjusting frame (4-6) and the horizontal adjusting slide rail (4-5) form a sliding pair; the horizontally arranged horizontal adjusting bolt (4-7) and the welding frame (4-1) form a sliding pair. The rotating pair forms a screw pair with the lateral adjusting frame (4-6); the lateral adjusting bolt (4-7) is locked by the locking block (4-8); The deformation joint is composed of a clamping block; the rotation of the wrench bolt can squeeze the deformation joint, so that the locking block (4-8) clamps the lateral adjustment bolt (4-7);

The longitudinal adjustment assembly includes a longitudinal adjustment slide rail, a longitudinal adjustment frame (4-9) and a longitudinal adjustment bolt (4-10); the vertically arranged longitudinal adjustment slide rail is fixed to the lateral adjustment frame (4-6); The adjustment frame (4-9) and the longitudinal adjustment slide rail form a sliding pair; the top of the longitudinal adjustment frame (4-9) is provided with an adjustment screw hole; the longitudinal adjustment bolt (4-10) is connected to the longitudinal adjustment frame (4-9) The adjustment threaded holes of the screw pair constitute the screw pair, and abut the lateral adjustment frame (4-6); the turning assembly includes the turning frame (4-11) and the turning cylinder (4-12); the turning frame (4-11) and the longitudinal adjusting frame (4-9) Articulation; the cylinder end of the overturning cylinder (4-12) is hinged with the longitudinal adjustment frame (4-9); the outer end of the piston rod of the overturning cylinder (4-12) is connected with the overturning frame (4-11) Hinged; the preheating unit (4-3) and the light welding unit (4-4) are both mounted on the flip frame (4-11); the preheating unit (4-3) is located between the light welding unit (4-4) and the welding belt Between the synchronous gripping mechanisms of the fixture; the preheating unit (4-3) and the light welding unit (4-4) have the same structure, and both include a lampshade, a heating lamp tube and a light welding radiator (4-13); the light welding radiator (4-13) -13) Installed on the top of the lampshade; the heating lamp tube is installed in the lampshade.

9. An IBC solar cell string light welding device according to claim 1, characterized in that: the first traverse mechanism (3-1) comprises a first traverse frame, a first traverse guide rail, a first traverse The sliding table and the first traverse drive assembly; the first traverse frame is fixed on the frame (1); the first traverse guide rail is fixed on the first traverse frame, and is arranged along the width direction of the frame (1) ; The first traverse slide table and the first traverse guide rail form a sliding pair; the first traverse drive assembly includes a first traverse synchronous belt, a first traverse synchronous wheel and a first traverse drive motor; two first traverse drive components The shifting synchronizing wheels are respectively supported on both ends of the first traversing frame and connected by the first traversing synchronous belt; the first traversing sliding table is fixed with the first traversing synchronous belt; the first traversing driving motor is fixed on the first traversing synchronous belt. on the traverse frame, and the output shaft is fixed with one of the first traverse synchronizing wheels; the first lifting mechanism includes a first lifting frame (3-2), a first lifting screw (3-3), a first lifting motor ( 3-4) and the first lifting slide table; the first lifting frame (3-2) is fixed with the first traverse sliding block; the vertically arranged first lifting screw (3-3) is supported on the first lifting frame ( 3-2); the first lifting motor (3-4) is fixed on the first lifting frame (3-2), and the output shaft is fixed with the first lifting screw (3-3); The first lifting frame (3-2) constitutes a sliding pair, and the first lifting screw (3-3) constitutes a helical pair;

The second traverse mechanism (5-1) includes a second traverse frame, a second traverse guide rail, a second traverse slide table and a second traverse drive assembly; the second traverse frame is fixed on the frame (1) The second traverse guide rail is fixed on the second traverse frame and is arranged along the width direction of the frame (1); the second traverse slide table and the second traverse guide rail form a sliding pair; the second traverse drive assembly It includes a second traverse synchronous belt, a second traverse synchronous wheel and a second traverse drive motor; the two second traverse synchronous wheels are respectively supported at both ends of the second traverse frame, and pass through the second traverse synchronous belt. connection; the second traverse sliding table is fixed with the second traverse synchronous belt; the second traverse drive motor is fixed on the second traverse frame, and the output shaft is fixed with one of the second traverse synchronizing wheels; the second lifting mechanism It includes a second lifting frame (5-2), a return lifting cylinder (5-3) and a second lifting sliding table (5-4); the second lifting frame (5-2) is fixed with the second transverse sliding block; The straightly arranged second lift screw is supported on the second lift frame (5-2); the return lift cylinder (5-3) is fixed on the second lift frame (5-2), and the piston rod slides with the second lift frame (5-2). Station (5-4) is fixed.

10. The welding method of an IBC solar cell string light welding device as claimed in claim 1, wherein:

Step 1. Place the box containing the battery slices on the tray; the feeding robot grabs the battery slices one by one from the tray and places them on the battery conveyor (6);

Step 2: The battery conveyor (6) transports the battery slices. When a battery slice reaches the bottom of the welding belt transfer device (3), the corresponding battery conveyor (6) stops conveying; the clamp conveyor (7) presses and positions a battery slice The jig (8) is transported to the bottom of the welding belt transfer device (3) as a working pressing and positioning jig;

At the same time, the four first mechanical clamping jaws (2-4) in the welding strip feeding device (2) clamp the ends of the four welding strips respectively; -6) Sliding in reverse, so that the length of the welding strip between the first mechanical gripper (2-4) and the cutter in the cutting assembly (2-7) reaches a preset value; four second mechanical grippers (2- 8) Clamp the corresponding welding strips respectively; the cutting assembly (2-7) cuts off the four welding strips; the end of the four welding strips away from the first mechanical gripper (2-4) is located just below the working press positioning fixture ;

Step 3: The welding strip clamp in the welding strip transfer device (3) moves synchronously to the top of the four welding strips; the two unilateral clamping jaws (3-6) respectively hook the two ends of the working press positioning clamp ; After that, the two unilateral push pieces (3-11) are pushed out, so that the connecting frame (8-2) in the working press positioning fixture is lifted upwards;

Step 4. The first push-down cylinder (3-7) and the second push-down cylinder (3-9) are pushed out; the vertical adsorption plates (3-8-2) on the interspersed adsorption block (3-8) pass through After the work presses the gap between the pressing wires (8-3) on the positioning fixture, the first adsorption grooves (3-8-3) at the bottom of the vertical adsorption plate (3-8-2) and the corresponding welding strips are respectively contact; each second adsorption groove at the bottom of the horizontal adsorption plate (3-10) is in contact with the corresponding welding strip respectively;

Step 5. Insert the adsorption block (3-8) and the horizontal adsorption plate (3-10) to absorb the four welding strips; release the four first mechanical jaws (2-4);

Step 6. The welding belt transfer device (3) transports the working pressing and positioning fixture and the four welding strips to the top of the battery sheet on the battery conveyor, and places the welding tape and the working pressing positioning fixture on the battery sheet; the working pressing positioning fixture is located at the Above one cell, the welding tape covers the two cells; the two unilateral pushers (3-11) are retracted, so that the connecting frame (8-2) in the working press positioning fixture moves downward; the work press positioning The pressing wire (8-3) on the fixture presses one end of the four welding strips;

The part of the welding strip that is not pressed by the working pressing and positioning jig will be pressed during the next transportation of the welding strip and the pressing and positioning jig (8); two adjacent transportation processes of the welding strip and the pressing and positioning jig (8); The positions of the four welding strips in the previous transportation are staggered from the four welding strips in the next transportation; a battery string includes 12 battery slices; the battery slices at the head end and the battery slices at the end have four covering only one battery slice The eight welding strips covering only one cell are also transported by the welding strip transfer device (3). ) do not carry the pressing and positioning fixture (8) at the same time;

Step 7. The battery slices on which the welding ribbons are placed are conveyed by the battery conveyor (6) and pass right below the light welding device (4) in turn; Preheating the sheet and the welding ribbon; the heating lamp tube in the light welding unit (4-4) is energized to emit light, and the battery sheet and the welding ribbon are welded;

Step 8. When the pressing and positioning fixture (8) on the battery conveyor (6) reaches the bottom of the fixture return device (5), the fixture grasping mechanism in the fixture return device (5) will press the pressing and positioning fixture (8) on the battery sheet. 8) Transfer to the input end of the gripper conveyor (7).