CN115832114B - Welding strip positioning assembly and battery string interconnection device - Google Patents
Welding strip positioning assembly and battery string interconnection device Download PDFInfo
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- CN115832114B CN115832114B CN202310058287.2A CN202310058287A CN115832114B CN 115832114 B CN115832114 B CN 115832114B CN 202310058287 A CN202310058287 A CN 202310058287A CN 115832114 B CN115832114 B CN 115832114B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a welding strip positioning assembly and a battery string interconnection device, wherein the welding strip positioning assembly comprises: the pressing tool comprises a frame and a plurality of elastic pieces arranged on the frame, the bottom surfaces of the elastic pieces are propped against the first adhesive film layer, the top surfaces of the supporting parts are supported on the bottom surfaces of the second adhesive film layer, and the elastic pieces and the supporting parts respectively press the bottom surfaces of the first adhesive film layer and the top surface lattice of the second adhesive film layer on the surfaces of the battery pieces on two sides of the lengths of the front welding strip and the back welding strip; the pressing tool and the supporting part enable the first adhesive film layer and the second adhesive film layer to position the front welding strip and the back welding strip on the upper surface and the lower surface of the battery piece through a plurality of pressing points, the welding strips are precisely pressed on the surface of the battery piece through a plurality of pressing points, so that the welding strips are prevented from being offset from the battery piece when the adhesive film is heated and bonded, and the welding strips and the battery piece are prevented from being connected in a virtual mode or separated from the battery piece.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to a welding strip positioning assembly and a cell string interconnection device.
Background
The low-temperature welding technology of the battery strings becomes a mainstream trend of development of the photovoltaic industry, the welding strips and the battery pieces without the main grid are fixedly connected in a glue or adhesive film low-temperature bonding mode, the surfaces of the battery pieces without the main grid are only provided with thin grids, the quantity of silver paste printed is small, the silicon chip is thinner, and the cost of the battery pieces is low.
In the adhesive film bonding technology, the polymer composite film is heated to generate viscosity to cover and bond the welding strip on the surface of the battery piece, so that the technology of welding the battery string at high temperature is replaced. The traditional welding strip positioning mode can only use the frock to press on the glued membrane on the upper layer of cover welding strip, and frock whole face presses in glued membrane upper surface, and glued membrane self can soften when the glued membrane heats, warp even for the welding strip is easily by glued membrane area skew, thereby makes welding strip and battery piece grid line location inaccurate, welds strip and battery piece virtual even, and in addition, the molten glued membrane easily flows into between welding strip and the battery piece when heating the glued membrane, makes welding strip and the welding point on the battery piece break away from, leads to welding strip and battery piece between insulation, influences battery string quality.
Disclosure of Invention
In order to solve the technical problems, the invention provides the welding strip positioning assembly, which can press the adhesive films paved on the two sides of the length of the welding strip on the front and the back of the battery piece on the surface of the battery piece when the adhesive films are heated and bonded with the welding strip, so that the welding strip is accurately pressed on the surface of the battery piece, the welding strip is prevented from being offset from the battery piece during heating and bonding, and the situation that the welding strip and the battery piece are in virtual connection or separation is solved.
In a first aspect, the present application proposes a solder strip positioning assembly, the solder strip positioning assembly is used for positioning solder strips on front and back sides of a battery string, the battery string is provided with a first adhesive film layer, a front solder strip, a battery piece, a back solder strip and a second adhesive film layer from top to bottom, the first adhesive film layer coats the front solder strip on the upper surface of the battery piece, the second adhesive film layer coats the back solder strip on the lower surface of the battery piece,
the welding strip positioning assembly includes: the pressing tool comprises a frame and a plurality of elastic pieces arranged on the frame, the bottom surfaces of the elastic pieces are pressed against the first adhesive film layer, and the elastic lattices of the first adhesive film layer on two sides of the front welding strip are pressed against the upper surface of the battery piece; the top surface of the supporting part is propped against the bottom surface of the second adhesive film layer, the second adhesive film layer lattices at two sides of the back welding strip are pressed on the lower surface of the battery piece, and the elastic piece and the supporting part enable the first adhesive film layer and the second adhesive film layer to position the front welding strip and the back welding strip on the upper surface and the lower surface of the battery piece through a plurality of pressing points;
in the first aspect, optionally, the welding strip positioning assembly further includes a transmission belt for transmitting the battery string and the presser.
In the first aspect, optionally, the supporting portion includes a plurality of bumps disposed on an upper surface of the transmission belt, and the plurality of bumps abut against the lower surface of the battery piece near the second adhesive film layer on two sides of the diameter of the back welding belt.
In the first aspect, the supporting portion includes a positioning module disposed below the transmission belt, and a plurality of struts elastically connected to the positioning module, where the struts pass through a through hole disposed on the transmission belt and are abutted to the second adhesive film layer on two sides of the diameter of the back welding belt.
In the first aspect, optionally, the transmission belt is provided with a plurality of uniformly arranged adsorption holes, and the adsorption holes are used for adsorbing and fixing the second adhesive film layer and/or the battery piece.
In the first aspect, the welding strip positioning assembly further includes a heating mechanism, the conveying belt drives the battery string and the pressing tool to pass through the heating mechanism, the heating mechanism heats the battery string so that the pressing points of the first adhesive film layer and the second adhesive film layer and the surface of the battery piece are adhered to form a plurality of adhesion points, and the front welding strip and the back welding strip are fixed on the surface of the battery piece by the plurality of adhesion points to form the battery string in series.
In a first aspect, optionally, the heating mechanism includes a heating rod disposed below the conveyor belt; and/or an infrared lamp tube arranged above the transmission belt.
In the first aspect, the elastic element includes a pressing pin elastically connected with the frame through a spring, where the pressing pin and the supporting rod are respectively provided with at least two contacts at one end of the pressing pin, which is abutted to the first adhesive film layer and the second adhesive film layer, the contact of the same pressing pin is abutted to the first adhesive film layer on the same side of the front welding strip, the contact of the same supporting rod is respectively abutted to the second adhesive film layer on two sides of the back welding strip, and the contact, which is close to the diameter of the back welding strip, on the pressing pin is opposite to the contact of the supporting rod.
In the first aspect, optionally, the solder strip positioning assembly further includes a driving portion connected to the supporting portion, where the driving portion is used for driving the supporting portion to lift;
the supporting part further comprises a supporting bottom plate, at least two guide rods and a U-shaped plate, wherein the supporting bottom plate is arranged on the bottom surface of the transmission belt, the guide rods are respectively connected with the supporting bottom plate and the two ends of the U-shaped plate up and down, and the two ends of the positioning module penetrate through the guide rods and are connected between the supporting bottom plate and the U-shaped plate in a sliding manner;
the drive part comprises a top plate penetrating between the positioning module and the U-shaped plate, and a lifting drive mechanism connected with the bottom of the top plate, wherein the top of the top plate is in butt joint with the bottom of the positioning module, and the lifting drive mechanism drives the top plate to move up and down, so that the positioning module and the supporting rod connected to the positioning module are driven to lift, and the supporting rod penetrates through a through hole in the conveying belt or is retracted to the lower side of the conveying belt.
In the first aspect, the driving part further comprises a support and a sliding rail fixed on the support, the sliding rail is slidably connected with a plurality of supporting parts, the supporting parts are arranged in parallel along the conveying direction of the conveying belt, the bottom of the U-shaped plate is further in driving connection with a linear driver, and the linear driver is used for adjusting the distance between each supporting part.
In the first aspect, the welding strip positioning assembly further comprises supporting tables arranged on two sides of the transmission belt, the tops of the supporting tables are in contact with the bottom surfaces of two ends of the pressing tool, and the transmission belt can drive the battery string and the pressing tool to synchronously move relative to the supporting tables.
In a second aspect, the application proposes a battery string interconnection device, the battery string interconnection device includes the frame that is used for fixing transmission belt, and above-mentioned arbitrary one weld the area locating component, weld in the area locating component the supporting part sets up the horizontal middle section of frame, the horizontal anterior segment of frame is used for laying the battery string, the horizontal posterior segment of frame is used for picking up the pressure equipment utensil on the battery string after the heating, transmission belt drives the battery string passes through in proper order horizontal anterior segment, horizontal middle section and the horizontal posterior segment of frame.
The invention completes the positioning and the bonding fixation of the first adhesive film layer arranged on the front side of the battery piece, the front welding strip, the second adhesive film layer arranged on the back side of the battery piece and the back welding strip. The mode that the dot matrix was pressed can be more close to and weld area diameter edge to make the glued membrane with weld area cladding tighter, make the welded area more paste tight battery piece surface, effectively solve the welded area when the heating bonding, driven skew or glued membrane flow in by the glued membrane and weld the problem between area and the battery piece, thereby provide the welding quality of battery cluster.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a battery string provided by the invention;
FIG. 2 is a schematic view of a first solder strip positioning assembly according to the present invention;
FIG. 3 is a schematic view of a second solder strip positioning assembly according to the present invention;
FIG. 4 is a schematic diagram illustrating a second embodiment of a strap positioning assembly according to the present invention;
FIG. 5 is a schematic view of the support portion of FIG. 4 in a bottom view;
fig. 6 is a schematic structural diagram of a battery string interconnection device according to the present invention.
Wherein, the reference numerals are as follows:
100. a battery string; 101. a first adhesive film layer; 102. front welding strips; 103. a battery sheet; 104. a back welding strip; 105. a second adhesive film layer; 106. a bonding point;
200. a press; 21. a frame; 201. a light hole; 22. an elastic member;
300. a support part; 31. a positioning module; 32. a support rod; 33. a support base plate; 34. a guide rod; 35. a U-shaped plate; 36. a support table;
400. a conveyor belt; 41. a bump; 42. a through hole;
500. a driving section; 51. a top plate; 52. a lifting driving mechanism; 521. an adapter plate; 522. driving the rotating shaft; 523. a rotating electric machine; 524. a cam; 53. a support; 54. a slide rail; 55. a linear driver;
600. a first heating mechanism; 700. a second heating mechanism; 800. a frame.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The low-temperature welding technology of the battery string is to fix the welding strip on the surface of the battery piece through glue or glue film in a low-temperature heating and bonding mode, the battery piece is mainly selected to be a battery piece without a main grid, the surface of the battery piece without the main grid is only printed with a thin grid, the printed silver paste is less, the silicon wafer is thinner, the cost of the battery piece is lower than that of a conventional battery piece with the main grid, as shown in fig. 1, the welding strip positioning assembly and the battery string interconnection device are applied to manufacturing the battery string 100 using the glue film bonding welding strip, the battery string 100 is respectively provided with a first glue film layer 101, a front welding strip 102, the battery piece 103, a back welding strip 104 and a second glue film layer 105 from top to bottom, the front welding strip 102 is coated on the upper surface of the battery piece 103, the back welding strip 104 is coated on the bottom surface of the battery piece 103, the upper surface of the battery piece 103 is defined as the front of the battery piece 103 in the application, and the lower surface of the battery piece 103 is defined as the back of the battery piece 103.
In the existing battery string preparation technology, the battery string bonded by the adhesive film can only press the adhesive film covered outside the welding belt by using the existing tool for positioning the welding belt, the adhesive film cannot be tightly attached to the battery piece 103, the adhesive film can weaken in hardness when being heated, and even the adhesive film can deform, for example, shrink or curl. Therefore, when the adhesive film and the battery piece are heated and adhered, the welding belt is easy to deviate by the adhesive film belt, so that the grid lines on the welding belt and the battery piece are positioned inaccurately, and the welding belt and the battery piece are connected in a virtual way; because the welding strip is not well positioned on the battery piece, and because the adhesive film is in a molten state when being heated or the adhesive film is heated and pressurized, the softened adhesive film is possibly extruded between the welding strip and the battery piece, so that the welding strip is supported by the adhesive film and separated from the welding point of the battery piece, insulation between the welding strip and the battery piece is caused, and the welding quality of the battery string is reduced.
Therefore, when the battery string 100 is heated and bonded, the adhesive films on two sides of the length of the welding strip on the front side and the back side of the battery string 100 are fixed in a pressing mode through the welding strip positioning assembly in a dot matrix mode, the welding strips are positioned on the surface of the battery piece 103 accurately, the parts, which are pressed and contacted with the battery piece 103 through the heating adhesive films, are firmly bonded to form a plurality of bonding points 106, and the two sides of the diameter of the welding strips are covered and fastened on the surface of the battery piece 103 through the adhesive points 106 of the adhesive films and the battery piece 103.
Referring to fig. 1 and 2, a solder strip positioning assembly provided in the present application includes: the pressing tool 200 is pressed on the first adhesive film layer 101 of the battery string 100 and the supporting part 300 is arranged below the battery string 100, the pressing tool 200 comprises a frame 21 and a plurality of elastic pieces 22 arranged on the frame 21, the bottoms of the elastic pieces 22 are pressed on the first adhesive film layer 101, and the elastic lattice of the first adhesive film layer 101 on two sides of the front welding strip 102 is pressed on the upper surface of the battery piece 103; the top of the supporting part 300 is pressed against the bottom surface of the second adhesive film layer 105, and the second adhesive film layers 105 on two sides of the back welding strip 104 are pressed on the lower surface of the battery piece 103 in a dot matrix manner, and the elastic piece 22 and the supporting part 300 enable the bottom surface of the first adhesive film layer 101 and the top surface of the second adhesive film layer 105 to position the front welding strip 102 and the back welding strip 104 on the upper surface and the lower surface of the battery piece 103 through a plurality of pressing points.
Illustratively, the weld-strap positioning assembly further includes a transfer belt 400, the transfer belt 400 being used to transfer the battery string 100 and the press 200.
In some embodiments, as shown in fig. 2, the supporting portion 300 may further be a plurality of protruding points 41 disposed on the transmission belt 400, the top surfaces of the protruding points 41 at least abut against the bottom surface of the second adhesive film layer 105, the top surfaces of the plurality of protruding points 41 at least abut against the second adhesive film layer 105 near two sides of the diameter of the back side welding strip 104 on the lower surface of the battery piece 103, and the two adjacent protruding points 41 clamp the diameter of the back side welding strip 104 between the two protruding points 41 in a recess, so as to position the back side welding strip 104 on the battery piece 103 at two sides of the diameter.
It should be noted that, the protruding points 41 on the transmission belt 400 are at least arranged at two sides close to the diameter of the welding belt, and part of protruding points 41 can be additionally arranged at any position between two adjacent welding belts, so that the number of bonding points 106 between the second adhesive film layer 105 and the battery piece 103 is increased, the positioning accuracy of the welding belt is ensured, meanwhile, the adhesion strength of the second adhesive film layer 105 and the battery piece 103 is increased, meanwhile, the second adhesive film layer 105 can be flatly and tightly pressed on the battery piece 103, and the situation that the adhesive film is deformed and wrinkled when the transmission belt 400 transmits the laid battery string 100 for heating and bonding is prevented.
It should be further noted that, the length direction of the conveying belt 400 is uniformly provided with adsorption holes for adsorbing the second adhesive film layer 105 and/or the battery piece 103, the adsorption holes are used for fixing the second adhesive film layer 105 located at the bottom of the battery string 100, or adsorbing and fixing the battery piece 103 laid on the second adhesive film layer 105, or adsorbing and fixing the second adhesive film layer 105 and the battery piece 103 located on the second adhesive film layer 105 at the same time, so that when the conveying belt 400 continuously conveys the battery string 100, the second adhesive film layer 105 and/or the battery piece 103 do not move, the protruding points 41 are arranged at intervals with the adsorption holes, and the concave positions between two adjacent protruding points 41 correspondingly accommodate the back welding strips 104, so that the back welding strips 104 do not move relative to the second adhesive film layer 105 and the battery piece 103, and the welding accuracy of the welding strips in the battery string 100 is ensured.
In some embodiments, referring to fig. 3, the supporting portion 300 may further include a positioning module 31 disposed below the conveying belt 400, and a plurality of struts 32 elastically continuous with the positioning module 31, specifically, a plurality of through holes 42 are formed in the conveying belt 400, and the struts 32 can pass through the through holes 42 formed in the conveying belt 400 to abut against the bottom surface of the second adhesive film layer 105, and abut against the bottom surface of the battery piece 103 with the second adhesive film layer 105.
The through hole 42 formed in the transmission belt 400 and used for passing through the strut 32 and the adsorption hole formed in the transmission belt 400 can share the same hole, and the through hole 42 and the adsorption hole are arranged opposite to each other according to the position where the strut 32 extends out of the transmission belt 400 and has a tack weld diameter.
When the battery string 100 is heated and bonded, the bottom of the elastic piece 22 on the pressing tool 200 is pressed against the first adhesive film layer 101, and the elastic lattice of the first adhesive film layer 101 on both sides of the front welding strip 102 is pressed against the upper surface of the battery piece 103; the supporting rod 32 extends out of the through hole 42 of the transmission belt 400 to press against the bottom surface of the second adhesive film layer 105, and the top surface of the second adhesive film layer 105 is abutted against the lower surface of the battery piece 103, so that the first adhesive film layer 101 and the second adhesive film layer 105 form a plurality of bonding points 106 with the front and back surfaces of the battery piece 103 respectively.
In some embodiments, the solder strip positioning assembly further includes a heating mechanism, the transmission belt 400 drives the battery string 100 and the press 200 to pass through the heating mechanism, the heating mechanism heats the battery string 100 to adhere the pressing points on the surfaces of the first adhesive film layer 101 and the second adhesive film layer 105 and the battery piece 103 to form a plurality of bonding points 106, and the plurality of bonding points 106 fix the front solder strip 102 and the back solder strip 104 on the surface of the battery piece 103 to be connected in series to form the battery string 100.
Specifically, the laid battery string 100 and the pressing tool 200 pressed against the battery string 100 are synchronously conveyed to the heating mechanism by the conveying belt 400, when the battery string 100 is heated, adhesive films on two sides of the front welding strip 102 positioned on the upper surface of the battery piece 103 and two sides of the back welding strip 104 positioned on the lower surface of the battery piece 103 are pressed and connected on the front surface and the back surface of the battery piece 103 by the pressing tool 200 and the supporting part 300 in a dot matrix mode, the pressing tool 200 and the supporting part 300 are pressed and connected with the pressing points of the battery piece 103 in an adhesive mode to form a plurality of bonding points 106, the two sides of the diameter of the welding strip are fastened on the battery piece 103 by the bonding points 106, so that the welding strip is accurately fixed on the surface of the battery piece 103 by the adhesive films from the two sides of the diameter of the welding strip, and the welding strip is tightly attached to the surface of the battery piece 103 under the action of the bonding points 106 and the adhesive films, and the welding strip cannot shake and deviate, and the situation that the welding strip 103 cannot flow into the battery piece 103 and cause insulation is avoided.
Specifically, the positioning module 31 is disposed below the transmission belt 400, when the transmission belt 400 drives the battery string 100 to move, the supporting rod 32 connected to the positioning module 31 is in a low position, when the transmission belt 400 drives the battery string 100 to move to a heating area of the heating mechanism, the positioning module 31 drives the supporting rod 32 to extend out of the corresponding through hole 42 on the transmission belt 400 and elastically support against the bottom of the second adhesive film layer 105, so that the supporting rod 32 elastically applies a force to the bottom of the second adhesive film layer 105, and the top surface of the second adhesive film layer 105 is pressed against the bottom surface of the battery piece 103, thereby fixing the back welding belt 104 on the lower surface of the battery piece 103.
It should be noted that, the elastic member 22 and the supporting portion 300 on the pressing tool 200 only act on the adhesive films on both sides of the front welding strip 102 and the back welding strip 104, the elastic member 22 applies a preset pressure and a supporting force of the supporting portion 300, and simultaneously presses the adhesive films on both sides of the front welding strip 102 and the back welding strip 104 onto the surface of the battery piece 103, and after heating, a plurality of bonding points 106 are formed between the adhesive film pressed onto the surface of the battery piece 103 and the battery piece 103, and the bonding points 106 on both sides of the welding strip enable the welding strip to be fixed on the surface of the battery piece 103 by the coating of the adhesive film, so that the welding strips on the front and back sides of the battery piece 103 are positioned on the battery piece 103. The bonding points 106 on two sides of the welding strip are closer to the diameter of the welding strip, the movable quantity of the welding strip is smaller, the positioning accuracy is higher, the edge of the diameter of the welding strip can be closer to the lattice of the supporting part 300 by using the elastic piece 22 in a bonding mode, so that the welding strip is coated tightly, the welding strip is more tightly attached to the surface of the battery piece 103, the problem that the welding strip is driven to deviate or the adhesive film flows between the welding strip and the battery piece 103 by the adhesive film when being heated and bonded is effectively solved, and therefore the welding quality of the battery string 100 is provided.
In some embodiments, the heating mechanism includes a heating rod disposed below the conveyor belt 400; and/or infrared lamps disposed above the conveyor belt 400. When the heating rod is used for heating the transmission belt 400, the adhesive films on the front and back sides of the battery strings 100 are heated and bonded with the battery pieces 103 in a heat conduction mode of the transmission belt 400; when the infrared lamp tube is used for heating, the infrared lamp tube heats the battery piece 103 and the welding belt, the elastic piece 22 and the supporting rod 32 are pressed on the first adhesive film layer 101 and the second adhesive film layer 105 on the surface of the battery piece 103, and the heat transferred by the battery piece 103 is supplied to the pressing point, so that the first adhesive film layer 101 and the second adhesive film layer 105 are bonded at the pressing point; when the heating mechanism comprises a heating rod arranged below the transmission belt 400 and an infrared lamp tube arranged above the transmission belt 400, the heating rod below the transmission belt 400 heats the first adhesive film layer 101 and the second adhesive film layer 105 which are arranged on the transmission belt 400, so that the elastic piece 22 and the supporting rod 32 are bonded on the surface of the battery piece 103 according to the first adhesive film layer 101 and the second adhesive film layer 105 which are connected on the surface of the battery piece 103, the infrared lamp tube above the transmission belt 400 heats a welding strip paved on the front surface and the back surface of the battery piece 103, the welding strip is heated to be connected with grid line metal of the battery piece 103, the firmness of the connection between the welding strip and the battery piece 103 is increased, the welding strip deviation and the virtual connection or separation of the battery piece 103 are prevented, and the quality of the battery string 100 is ensured.
Preferably, when the infrared lamp tube is used for heating, the corresponding light hole 201 is arranged on the press tool 200, the light hole 201 is opposite to the front welding strip 102 on the battery piece 103, and the adhesive film has certain light transmittance, so that the light hole 201 is used for irradiating infrared rays emitted by the infrared lamp tube on the front of the front welding strip 102 through the frame 21 of the press tool 200 when the heating mechanism is used for heating, and the welding strip is directly heated by the infrared rays to be connected on the grid line of the battery piece 103.
In some embodiments, as shown in fig. 3, the elastic member 22 includes a pressing pin connected to the frame 21 of the pressing tool 200 through a spring, and at least two contacts are disposed at one end of the pressing pin and the supporting rod 32, which are abutted against the first adhesive film layer 101 on the same side of the front welding strip 102, respectively, where the contact of the same pressing pin abuts against the second adhesive film layer 105 on two sides of the diameter of the back welding strip 104, and the contact of the pressing pin, which is close to the diameter of the back welding strip 104, and the contact of the supporting rod 32 are opposite to each other, so as to fix the front welding strip 102 and the back welding strip 104 from the front and back sides of the battery piece 103 through the contact of the pressing pin and the contact of the supporting rod 32 on the diameter of the welding strip, so that the contact of the pressing pin abuts against the top and the bottom of the contact of the supporting rod 32, and the contact of the battery piece 103 is mutually supported, and the force that the single side of the battery piece 103 is pressed by the pressing pin or the supporting rod 32 is reduced, and the battery piece 103 is prevented from being damaged by the contact abutment.
It should be noted that the elastic member 22 provided in the present application may be other elastic members, such as a rubber column, or may be elastically abutted against the surface of the adhesive film, and may not cause damage to the battery piece 103.
In some embodiments, referring to fig. 4 and 5, the solder strip positioning assembly further includes a driving part 500 connected to the supporting part 300, wherein the driving part 500 is used for driving the supporting part 300 to lift and lower,
the supporting part 300 further comprises a supporting bottom plate 33 arranged on the bottom surface of the transmission belt 400, at least two guide rods 34 and a U-shaped plate 35, wherein the upper and lower parts of the guide rods 34 are respectively connected with the two ends of the supporting bottom plate 33 and the U-shaped plate 35, and the two ends of the positioning module 31 pass through the guide rods 34 and are connected between the supporting bottom plate 33 and the U-shaped plate 35 in a sliding manner;
the driving part 500 comprises a top plate 51 penetrating between the positioning module 31 and the U-shaped plate 35, and a lifting driving mechanism 52 connected with the bottom of the top plate 51, wherein the top of the top plate 51 is abutted with the bottom of the positioning module 31, and the lifting driving mechanism 52 drives the top plate 51 to move up and down, so that the positioning module 31 and the supporting rod 32 connected to the positioning module 31 are driven to lift, and the supporting rod 32 penetrates through the through hole 42 on the transmission belt 400 or is retracted below the transmission belt 400.
In some embodiments, the lifting driving mechanism 52 includes an adapter plate 521 disposed at two ends of the length of the top plate 51, a driving shaft 522 connected to the adapter plate 521 through a cam 524, one end of the driving shaft 522 is connected to a rotating motor 523, and the rotating motor 523 drives the cam 524 to rotate so as to drive the adapter plate 521 rotatably connected to the cam 524 to move up and down, thereby driving the top plate 51 to lift.
In this embodiment, the conveying belt 400 drives the laid battery strings 100 and the pressing tool 200 located on the battery strings 100 to pass through the supporting portion 300 arranged below the conveying belt 400, when the battery strings 100 to be interconnected and adhered stay above the supporting portion 300, the lifting driving mechanism 52 lifts the top plate 51 to move upwards, the top plate 51 drives the positioning module 31 to move upwards, the supporting rod 32 connected with the positioning module 31 passes through the through hole 42 on the conveying belt 400 to elastically abut against the bottom of the second adhesive film layer 105, the second adhesive film layer 105 is pressed on the battery piece 103 on two sides of the diameter of the back welding belt 104, meanwhile, the first adhesive film layer 101 on two sides of the diameter of the front welding belt 102 on the battery piece 103 is pressed on the upper surface of the battery piece 103 by the pressing needle, the heating mechanism heats the battery strings 100 at this time, under the action of the pressing needle and the supporting rod 32, the first adhesive film layer 101 and the front surface of the battery piece 103, and the second adhesive film layer 105 and the back surface of the battery piece 103 are uniformly connected with a plurality of adhesive dots 106, so that the adhesive film and the welding belt are jointly fixed on the surface of the battery piece 103, after the heating, the lifting driving mechanism 52 moves down to the supporting rod 103 to the conveying belt 400 continuously, and the subsequent conveying belt 400 moves to the conveying belt 400 continuously.
In some embodiments, the welding strip positioning module further includes a support 53 and a sliding rail 54 fixed on the support 53, a plurality of supporting portions 300 are slidably connected on the sliding rail 54, the supporting portions 300 are arranged in parallel along the conveying direction of the conveying belt 400, the bottom of the U-shaped plate 35 of the supporting portion 300 is further in driving connection with a linear driver 55, and a moving end of the linear driver 55 is connected with the bottom of the U-shaped plate 35 for driving a distance between each supporting portion 300.
Each supporting part 300 corresponds to one battery piece 103, and a plurality of supporting parts 300 are respectively in driving connection with the linear driver 55 so as to adapt to the gaps of the battery pieces 103 in the battery strings 100 with different specifications and adapt to the distances of the corresponding battery pieces 103 between two strings connected in series.
In some embodiments, the welding strip positioning assembly further comprises supporting tables 36 disposed at two sides of the transmission belt 400, wherein the top of the supporting tables 36 is in contact with the bottom surfaces of two ends of the press 200, the transmission belt 400 can drive the battery string 100 and the press 200 to synchronously move relative to the supporting tables 36, and the supporting tables 36 can support the weight of the press 200 on the battery piece 103, can share the force of the press 200 on the battery piece 103, and can prevent the battery piece 103 from being damaged by the press 200; on the other hand, when the heating mechanism heats the battery string 100, the presser 200 can be positioned on the support table 36, and the presser pin is allowed to give a preset pressure to the battery piece 103, where the preset pressure is a force capable of pressing the first adhesive film layer 101 and the second adhesive film layer 105 to form the adhesive point 106 with the surface of the battery piece 103, so as to ensure the firmness of the adhesive point 106 and prevent the situation that the solder strip and the battery piece 103 are in virtual connection or disconnection due to the solder strip offset.
Based on the above-mentioned welding strip locating component, refer to fig. 6, this application still provides a battery string interconnection device, and the device is including being used for fixing frame 800 and the arbitrary welding strip locating component of above-mentioned welding strip locating component, the supporting part 300 in this welding strip locating component sets up in frame 800 horizontal middle section, and the horizontal front end of frame 800 is used for laying battery string 100, and the horizontal rear section of frame 800 is used for picking up the pressure equipment 200 on the battery string 100 after the heating, and transmission belt 400 drives battery string 100 and passes through the horizontal front section, horizontal middle section and the horizontal rear section of frame 800 in proper order.
It should be noted that, the battery string interconnection device is applied to a device for preparing a battery string 100, a manipulator for laying the battery string 100 is further provided in the device, the manipulator is disposed at a horizontal front section of a frame 800 of the battery string 100 interconnection device, a second adhesive film layer 105, a back welding belt 104, a battery piece 103, a front welding belt 102 and a first adhesive film layer 101 are respectively laid on a transmission belt 400 at the horizontal front section of the frame 800, after a part of battery string 100 is laid, the transmission belt 400 is conveyed to the rear, the device continues to enter a heating area of a heating mechanism provided at a horizontal middle section of the frame 800, the heating mechanism comprises a first heating mechanism 600 and/or a second heating mechanism 700, the first heating mechanism 600 uses infrared rays for heating, the second heating mechanism 700 uses heating rods for heating, a welding positioning group positions the welding belt at the front and rear sides of the battery piece 103, after the welding belt positioning and bonding interconnection of the welding belt of the battery string 100 is completed, the transmission belt 400 continues to convey the heated battery string 100 to the heating area backward, after the laying and interconnection of the battery string 100 is completed on the transmission belt 400, the device enters the heating area of the heating mechanism provided at the horizontal middle section of the frame 800, the heating mechanism is provided at the front and rear section of the frame 200 is picked up by means of the transmission belt 200 after the battery string 200 is moved to the station after the front and rear section is pressed by the transmission belt 200.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (12)
1. The welding strip positioning assembly is characterized in that the welding strip positioning assembly is used for positioning welding strips on the front side and the back side of a battery string (100), the battery string (100) is provided with a first adhesive film layer (101), a front welding strip (102), a battery piece (103), a back welding strip (104) and a second adhesive film layer (105) from top to bottom, the first adhesive film layer (101) coats the front welding strip (102) on the upper surface of the battery piece (103), the second adhesive film layer (105) coats the back welding strip (104) on the lower surface of the battery piece (103),
the solder strip positioning assembly includes: the pressing tool (200) is pressed on the first adhesive film layer (101), and a supporting part (300) is arranged below the battery string (100), the pressing tool (200) comprises a frame (21) and a plurality of elastic pieces (22) arranged on the frame (21), a plurality of contacts are respectively arranged at the top of the supporting part and the bottom of the elastic pieces, the contacts at the bottom of the elastic pieces (22) are pressed on the first adhesive film layer (101), and the elastic lattice of the first adhesive film layer (101) at two sides of the front welding strip (102) is pressed on the upper surface of the battery piece (103); the contact at the top of the supporting part (300) is propped against the bottom surface of the second adhesive film layer (105), the second adhesive film layer (105) on two sides of the back welding strip (104) is pressed on the lower surface of the battery piece (103) in a dot matrix mode, the elastic piece (22) and the supporting part (300) enable the first adhesive film layer (101) and the second adhesive film layer (105) to position the front welding strip (102) and the back welding strip (104) on the upper surface and the lower surface of the battery piece (103) through a plurality of pressing points.
2. The weld bead positioning assembly according to claim 1, further comprising a conveyor belt (400), the conveyor belt (400) being configured to convey the battery string and the press (200).
3. The welding strip positioning assembly according to claim 2, wherein the contact of the supporting portion (300) comprises a plurality of protruding points (41) arranged on the upper surface of the transmission belt (400), and the protruding points (41) are abutted against the lower surface of the battery piece (103) by the second adhesive film layers (105) close to two sides of the diameter of the back welding strip (104).
4. The welding strip positioning assembly according to claim 2, wherein the supporting portion (300) comprises a positioning module (31) arranged below the transmission belt (400) and a plurality of supporting rods (32) elastically connected with the positioning module (31), a plurality of contacts are arranged at the tops of the supporting rods, and the contacts of the supporting rods (32) penetrate through holes (42) formed in the transmission belt (400) to be abutted against the second adhesive film layers (105) on two sides of the diameter of the back welding strip (104).
5. The welding strip positioning assembly according to claim 3 or 4, wherein a plurality of uniformly arranged adsorption holes are formed in the transmission belt (400), and the adsorption holes are used for adsorbing and fixing the second adhesive film layer (105) and/or the battery piece (103).
6. The welding strip positioning assembly according to claim 2, further comprising a heating mechanism, wherein the transmission belt (400) drives the battery string (100) and the pressing tool (200) to pass through the heating mechanism, the heating mechanism heats the battery string (100) so that the first adhesive film layer (101) and the second adhesive film layer (105) are adhered to the pressing points on the surface of the battery piece (103) to form a plurality of adhesive points (106), and the plurality of adhesive points (106) fix the front welding strip (102) and the back welding strip (104) on the surface of the battery piece (103) to be connected in series to form the battery string (100).
7. The weld bead positioning assembly according to claim 6, wherein the heating mechanism comprises a heating rod disposed below the conveyor belt (400); and/or an infrared lamp tube disposed above the conveyor belt (400).
8. The welding strip positioning assembly according to claim 4, wherein the elastic piece (22) comprises a pressing pin elastically connected with the frame (21) through a spring, at least two contacts are arranged at one end of the pressing pin, which is respectively abutted against the first adhesive film layer (101) and the second adhesive film layer (105), of the supporting rod (32), the contact of the same pressing pin is abutted against the first adhesive film layer (101) at the same side of the front welding strip (102), the contact of the same supporting rod (32) is respectively abutted against the second adhesive film layer (105) at two sides of the back welding strip (104), and the contact, which is close to the back welding strip (104), of the pressing pin is opposite to the contact of the supporting rod (32).
9. The solder strip positioning assembly of claim 4, further comprising a driving portion (500) connected to the support portion (300), the driving portion (500) being configured to drive the support portion (300) to move up and down;
the supporting part (300) further comprises a supporting bottom plate (33), at least two guide rods (34) and a U-shaped plate (35) which are arranged on the bottom surface of the transmission belt (400), the guide rods (34) are respectively connected with the supporting bottom plate (33) and the two ends of the U-shaped plate (35) up and down, and the two ends of the positioning module (31) penetrate through the guide rods (34) and are connected between the supporting bottom plate (33) and the U-shaped plate (35) in a sliding manner;
the drive part (500) comprises a top plate (51) penetrating between the positioning module (31) and the U-shaped plate (35), and a lifting drive mechanism (52) connected with the bottom of the top plate (51), the top of the top plate (51) is abutted to the bottom of the positioning module (31), and the lifting drive mechanism (52) drives the top plate (51) to move up and down, so that the positioning module (31) and the supporting rod (32) connected to the positioning module (31) are driven to lift, and the supporting rod (32) penetrates through a through hole (42) in the conveying belt (400) or is retracted to the lower side of the conveying belt (400).
10. The welding strip positioning assembly according to claim 9, wherein the driving part (500) further comprises a support (53) and a sliding rail (54) fixed on the support (53), a plurality of supporting parts (300) are connected to the sliding rail (54) in a sliding manner, the supporting parts (300) are arranged along the conveying direction of the conveying belt (400), a linear driver (55) is further connected to the bottom of the U-shaped plate (35) in a driving manner, and the linear driver (55) is used for adjusting the distance between each supporting part (300).
11. The welding strip positioning assembly according to claim 2, further comprising supporting tables (36) arranged on two sides of the transmission belt (400), wherein the tops of the supporting tables (36) are in contact with the bottom surfaces of two ends of the press (200), and the transmission belt (400) can drive the battery string (100) and the press (200) to synchronously move relative to the supporting tables (36).
12. A battery string interconnection device, characterized in that the battery string interconnection device comprises a frame (800) for fixing the transmission belt (400), and a welding strip positioning assembly according to any one of claims 2-11, wherein the supporting part (300) in the welding strip positioning assembly is arranged at the horizontal middle section of the frame (800), the horizontal front section of the frame (800) is used for paving a battery string (100), the horizontal rear section of the frame (800) is used for picking up a press (200) on the heated battery string (100), and the transmission belt (400) drives the battery string to sequentially pass through the horizontal front section, the horizontal middle section and the horizontal rear section of the frame (800).
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| CN110293353B (en) * | 2018-03-22 | 2021-09-03 | 无锡市正罡自动化设备有限公司 | Series welding machine and welding method of solar cell string |
| CN109262097A (en) * | 2018-09-28 | 2019-01-25 | 苏州腾晖光伏技术有限公司 | More main grid crystal silicon solar batteries welding methods and apparatus for welding and positioning |
| CN215644425U (en) * | 2021-06-28 | 2022-01-25 | 嘉兴隆基乐叶光伏科技有限公司 | Handling device and series welding machine |
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| CN114744080A (en) * | 2022-06-10 | 2022-07-12 | 苏州小牛自动化设备有限公司 | Battery string production method and battery string laying equipment |
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