CN106876522A - Circular welding is segmented apparatus for shaping and method and series welding machine - Google Patents

Abstract

A segmented circular welding ribbon shaping device, comprising a base, a first driving mechanism and a shaping mechanism, the bottom of the base is provided with a ribbon passage for the welding ribbon to pass through, and one end of the shaping mechanism is connected to the first driving mechanism Overlapping, the other end of the shaping mechanism is set above the ribbon channel at the bottom of the base, so that the first driving mechanism drives the shaping mechanism to move up and down relative to the base, and then through the gap between the bottom of the shaping mechanism and the bottom of the base The force is used to shape the circular welding ribbon located under the shaping mechanism. The driving mechanism of the present invention drives the shaping mechanism to move up and down, and then the welding ribbon in the welding ribbon channel at the bottom of the base is shaped. The round welding ribbon shaped by this method It is applied to the connection between dense grid cells and the connection between half cells, so that the welding strips of the cell and the cell connection are flat, which can effectively prevent the split of the cell and the cell connection during the lamination process.

Description

Segmented shaping device and method for round ribbon and stringer

technical field

The invention relates to the technical field of ribbon shaping for solar cells, in particular to a segmental shaping device and method for circular ribbons and a stringer.

Background technique

With the rapid development of the component industry, the improvement of component power has been paid more and more attention by various component manufacturers.

Nowadays, it is found that the power of cut slices of various cells is higher than that of the whole cell, such as half or 1/4, 3/4 of three-bar, four-bar, five-bar cells, etc. The test shows that, The power of the crystalline silicon dense grid cell can be increased by 2%-3% compared with the four-gate and five-gate cell components, and the power of the half-cell component of this dense-gate cell is 2%-2.5% higher than that of the whole component. Therefore, While using dense-grid solar cells, the dense-grid half-cell is favored by various component manufacturers. Therefore, the round ribbons used to connect dense-grid solar cells are also used in large quantities, and the round ribbons are closely related to crystalline silicon. There is a new problem in the connection of the grid cell, that is, in the lamination process, it is found that the connection between the cell and the circular solder ribbon for the cell is prone to cracks, because there is a certain gap between the cell and the cell. The gap is connected with a round ribbon. When the battery is not welded and the gap is stressed, it is very easy to damage the battery and produce slivers;

Therefore, the module manufacturers have thought of leaving no gaps in the connection of the cells or stacking the connecting sections of the cells without welding, especially in the half-cell module of the dense grid, due to the reduction of the cells, the seams between the cells are It seems a bit too much, which reduces the light-receiving area of the module, which affects the power of the module, and because the cost of the battery sheet decreases, the cost of the battery sheet in the module is reduced, so the connection of the battery sheet does not leave a gap or the battery sheet It is particularly critical that the joints are not welded. This method not only reduces the occupied area of the battery string of the module, but also increases the light-receiving surface of the battery sheet, and improves the utilization rate of the solder ribbon, which greatly improves the efficacy of the module. The use of circular solder ribbons for the connection between battery sheets still cannot avoid the splitting phenomenon caused by the lamination process.

Contents of the invention

In view of this, it is necessary to provide a segmental shaping device for round ribbons that uses flat ribbons at the connecting sections of adjacent battery slices according to the connection mode of the battery slices.

It is also necessary to propose a segmental shaping method for the circular ribbon.

It is also necessary to propose a stringer.

A segmented circular welding ribbon shaping device, comprising a base, a first driving mechanism and a shaping mechanism, the bottom of the base is provided with a ribbon passage for the welding ribbon to pass through, and one end of the shaping mechanism is connected to the first driving mechanism Overlapping, the other end of the shaping mechanism is set above the ribbon channel at the bottom of the base, so that the first driving mechanism drives the shaping mechanism to move up and down relative to the base, and then through the gap between the bottom of the shaping mechanism and the bottom of the base The active force reshapes the circular ribbon located below the reshaping mechanism.

A stringer, comprising a frame, a welding ribbon device arranged on the frame, a circular welding ribbon section shaping device, and a belt distributing device, the welding ribbon supply device is used to supply the welding ribbon to the circular welding ribbon Belt section shaping device, the circular welding ribbon segment shaping device is used to shape the welding ribbon and provide it to the belt distribution device, and the belt distribution device is used to output the welding ribbon, and the circular welding ribbon is segmentally shaped The driving mechanism and the shaping mechanism of the device are set according to the number of busbars of the solar cells, and the segmental shaping mechanism for the circular ribbon is the segmental shaping device for the circular ribbon mentioned above.

A segmented shaping method for a circular welding strip, comprising the following steps:

The drive controller controls the action of the first drive mechanism according to the way the circular ribbon is connected to the solar cells;

The first driving mechanism drives the first pressing rod of the shaping mechanism to move upwards. Under the constraint of the small axis, the other end of the first pressing rod that overlaps with the first pressing arm presses against the pressing arm, so that the bottom of the first pressing arm touches the circle. Shaped welding strip, and then under the force of the first pressure bar, the circular welding strip is shaped;

The first driving mechanism automatically resets, the first pressing rod retracts, the first pressing arm automatically resets, and a segment of the circular welding ribbon is shaped;

Repeat the above steps, and according to the connection method of the battery slices, the welding strips connected to the battery strings are segmented and shaped into the required flat welding strips.

A segmented shaping device for a circular welding ribbon proposed by the present invention includes a base, a first driving mechanism and a shaping mechanism. The welding ribbon section of the channel at the bottom is shaped, and the circular welding ribbon shaped by this method is applied to the connection between the dense grid cells and the connection between the half-cell cells, so that the solder straps at the connection section between the cells and the cells are flat, It can effectively prevent the splitting of the battery sheet and the connecting section of the battery sheet during the lamination process.

Description of drawings

Fig. 1 is a structural schematic diagram of the segmental shaping device for the circular ribbon.

Fig. 2 is a structural schematic diagram of the base.

Fig. 3 is a partially enlarged view showing the guide groove and shaping groove in Fig. 2 .

FIG. 4 is a top view of FIG. 1 .

Fig. 5 is a sectional view along A-A in Fig. 4 . This state is a state diagram when the first pressing arm does not flatten the circular solder ribbon.

FIG. 6 is an enlarged schematic view showing the cooperation between the first pressing arm and the shaping groove of the base in FIG. 5 .

FIG. 7 is a state view of the first pressing arm in FIG. 4 when flattening the circular welding ribbon.

FIG. 8 is an enlarged schematic view showing the cooperation between the first pressing arm and the shaping groove of the base in FIG. 7 .

Fig. 9 is a structural schematic diagram of a segmental shaping device for a circular welding ribbon provided with a pressing device.

Fig. 10 is a schematic structural diagram of a combination of several circular ribbon segmental shaping devices arranged according to the number of busbars of solar cells.

FIG. 11 is a schematic top view of a part of battery strings formed by welding with the combined circular ribbon segmental shaping device shown in FIG. 10 .

Fig. 12 is a front view of Fig. 11 .

Fig. 13 is a partially enlarged view showing the Z-shaped bend of the welding ribbon in Fig. 12 .

Fig. 14 is a structural schematic diagram of the stringer.

In the figure: base 10, body 11, base 12, ribbon channel 121, guide groove 1211, shaping groove 1212, limit sinking groove 1213, transition slope 123, first driving mechanism 20, first transmission connecting rod 21, shaping Mechanism 30, first pressing rod 31, first pressing arm 32, first small shaft 33, pressing device 40, second pressing rod 41, second pressing arm 42, second small shaft 43, second transmission link 44 , Round ribbon segment shaping device 100 , ribbon supply device 200 , ribbon cloth device 300 , ribbon 500 , ribbon Z-bend 501 , battery sheet 600 .

detailed description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. Ordinary technicians can also obtain other drawings based on these drawings on the premise of not paying creative work.

Referring to Figures 1 to 9, an embodiment of the present invention provides a circular welding ribbon section shaping device 100, including a base 10, a first drive mechanism 20 and a shaping mechanism 30, the bottom of the base 10 is set for welding ribbon Through the ribbon channel 121, one end of the shaping mechanism 30 is overlapped with the first driving mechanism 20, and the other end of the shaping mechanism 30 is arranged above the ribbon channel 121 at the bottom of the base 10, so as to drive the shaping mechanism through the first driving mechanism 20 30 moves up and down relative to the base 10 , and then the circular welding ribbon located under the shaping mechanism 30 is shaped by the force between the bottom of the shaping mechanism 30 and the bottom of the base 10 .

Further, the shaping mechanism 30 includes a first pressing rod 31, a first pressing arm 32, and a first small shaft 33, the first small shaft 33 passes through the first pressing rod 31, and the two ends of the first small shaft 33 are fixed to the base 10 connected, the first pressing rod 31 can rotate relative to the first small shaft 33, one end of the first pressing rod 31 is overlapped with the first driving mechanism 20, and the other end of the first pressing rod 31 is overlapped with the top of the first pressing arm 32. Then, the bottom of the first pressing arm 32 passes through the base 10 and is located above the ribbon channel 121 at the bottom of the base 10 .

Referring to FIG. 3 , further, the base 10 includes a body 11 and a base 12 located at the bottom of the body 11 , and a ribbon channel 121 for the ribbon to pass is opened on the base 12 , and the ribbon channel 121 includes a guide groove 1211 and a shaping groove 1212 , The depth of the guide groove 1211 is greater than the diameter of the welding ribbon 500, the depth of the shaping groove 1212 is smaller than the diameter of the welding ribbon 500, the shaping groove 1212 is located below the bottom of the first pressing arm 32, so as to pass through the bottom of the first pressing arm 32 and the shaping groove The force between the bottoms of the grooves 1212 shapes the round ribbon 500 .

The distance that the bottom of the first pressing arm 32 moves downward can be realized by setting the single drive stroke of the first driving mechanism 20, so the bottom of the first pressing arm 32 is driven downward by the first driving mechanism 20, when the first The bottom of the pressing arm 32 moves to a predetermined distance from the bottom of the shaping groove 1212 , which is the thickness of the circular welding ribbon 500 after being shaped and flattened.

Further, limit sinking grooves 1213 are provided on the upper surface of the base 12 on both sides of the shaping groove 1212. The limit sinking grooves 1213 are used to accommodate the bottom of the first pressing arm 32. The height of the bottom of the limit sinking grooves 1213 is high. The height of the groove bottom of the shaping groove 1212 is such that a flat welding strip thickness is formed between the groove bottom of the limit sinking groove 1213 and the groove bottom of the shaping groove 1212 to form a groove.

The base 12 and the main body 11 are detachably connected, for example, the two are connected by a screw. In this way, the device is also suitable for welding strips with different shaping requirements. For example, there are different requirements for the thickness of the welding strips after shaping. The grooved base 12 can be prefabricated with flat ribbon thicknesses of different groove depths. Certainly, the groove depth of the groove forming the thickness of the flat ribbon can be realized by adjusting the groove depth of the limiting sinker groove 1213 and adjusting the groove depth of the shaping groove 1212 .

Further, a transition bevel 123 is provided between the groove bottom of the guide groove 1211 and the groove bottom of the shaping groove 1212, and the transition bevel 123 is located below the bottom of the first pressing arm 32, so as to pass through the groove bottom of the guide groove 1211, the transition bevel 123, the shaping The bottom of the groove 1212 forms a Z-shaped bend 501 of the solder ribbon. In this way, the device can not only flatten and reshape the welding ribbon 500, but also shape the welding ribbon to form a Z-shaped bend 501 of the welding ribbon. In this way, it further effectively prevents the splitting of adjacent battery pieces when connecting.

Further, the first driving mechanism 20 includes a first transmission link 21 and a drive controller for driving the first transmission link 21 to move up and down, and one end of the first pressing rod 31 overlaps with the first transmission link 21 . The drive controller is a controller with a set operation program. For example, according to the way that the circular ribbon is connected to the solar cells, the drive controller drives the first transmission link 21 to move up and down according to the predetermined steps, and then drives the first pressing rod 31 move up and down synchronously.

In order to use the mass production of battery strings, multiple battery slices 600 are connected in series through the ribbon 500 to form a battery string, and multiple battery strings are produced synchronously and in parallel, so multiple circular ribbons can be set correspondingly according to the number of solar battery busbar lines The segment shaping device 100 is used to produce multiple battery strings synchronously, as shown in Fig. 10 to Fig. 13 .

As shown in Fig. 9, further, the segmented round welding ribbon shaping device 100 also includes a pressing device 40, and the pressing device 40 includes a second pressing rod 41, a second pressing arm 42, a second small shaft 43, and a second driving mechanism, The second small shaft 43 passes through the second pressing rod 41, the two ends of the second small shaft 43 are fixedly connected with the base 10, the second pressing rod 41 can rotate relative to the second small shaft 43, and one end of the second pressing rod 41 It overlaps with the second driving mechanism to drive the second pressing rod 41 to move up and down relative to the base 10 through the second driving mechanism, the other end of the second pressing rod 41 overlaps with the top of the second pressing arm 42, and the second pressing The bottom of the arm 42 passes through the base 10, and is located above the ribbon channel 121 at the bottom of the base 10, and then passes through the bottom of the second pressing arm 42 to weld the tail piece of the circular ribbon 500 below the shaping mechanism 30. Push down, the second drive mechanism includes a second transmission link 44 and a drive controller that drives the second transmission link 44 to move up and down, and one end of the second pressing rod 41 overlaps with the second transmission link 44 .

After the battery string is welded, the last battery piece is usually called a tail piece, and the welding ribbon used to connect the tail piece is not easy to reshape, because uneven force will cause cracks in the lamination process after shaping, so, set A pressing device 40 is provided to press and fix the welding ribbon 500 on the tail piece.

As shown in Figure 14, the present invention also proposes a stringer, including a frame, a ribbon supply device 200 arranged on the frame, a circular ribbon section shaping device 100, a ribbon device 300, and a ribbon supply device 200 It is used to supply the welding ribbon to the circular welding ribbon section shaping device 100. The circular welding ribbon segment shaping device 100 is used to shape the welding ribbon and provide it to the ribbon distribution device 300. The ribbon distribution device 300 is used to output the welding ribbon , the driving mechanism and the shaping mechanism 30 of the round ribbon segment shaping device 100 are set according to the number of solar cell busbars, and the round solder ribbon segment shaping device 100 is the above-mentioned round ribbon segment shaping device 100 .

The present invention also proposes a segmental shaping method for a circular welding strip, comprising the following steps:

The drive controller controls the action of the first drive mechanism 20 according to the manner in which the circular ribbon 500 is connected to the solar cells;

The first driving mechanism 20 drives the first pressing rod 31 of the shaping mechanism 30 to move upward, and the first pressing rod 31 is constrained by the first small shaft 33, and the other end overlapping the first pressing arm 32 is pressed toward the first pressing arm 32 , making the bottom of the first pressing arm 32 contact the circular welding ribbon 500, and then under the force of the first pressing rod 31, the circular welding ribbon 500 is shaped;

The first driving mechanism 20 automatically resets, the first pressing rod 31 retreats, the first pressing arm 32 automatically resets, and a segment of the circular welding ribbon 500 is shaped;

Repeat the above steps, and according to the connection method of the battery slices, the welding ribbons connected to the battery strings are segmented and shaped into the required flat ribbons.

The steps in the methods of the embodiments of the present invention can be adjusted, combined and deleted according to actual needs.

The modules or units in the device of the embodiment of the present invention can be combined, divided and deleted according to actual needs.

What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot limit the scope of rights of the present invention with this. Those of ordinary skill in the art can understand the whole or part of the process of realizing the above-mentioned embodiment, and make according to the claims of the present invention The equivalent changes still belong to the scope covered by the invention.

Claims (9)

1. a kind of circular welding is segmented apparatus for shaping, it is characterised in that：Including pedestal, the first drive mechanism and reshaping device, institute The bottom for stating pedestal is provided for the welding passage that welding passes through, and described reshaping device one end overlaps with the first drive mechanism, whole The other end of shape mechanism is arranged on the top of the welding passage of base bottom, and reshaping device phase is driven with by the first drive mechanism Moved up and down for pedestal, and then active force between bottom and the bottom of pedestal by reshaping device is pointed to reshaping device The circular welding of lower section implements shaping.

2. circle welding as claimed in claim 1 is segmented apparatus for shaping, it is characterised in that：The reshaping device includes the first pressure Bar, the first pressure arm, the first small axle, the first small axle pass through first depression bar, and the two ends of the first small axle are fixed with pedestal and connected Connect, the first depression bar can be rotated relative to the first small axle, one end and first drive mechanism of first depression bar are overlapped, the first pressure The top overlap joint of the other end of bar and the first pressure arm, the bottom of the first pressure arm passes through pedestal, and logical positioned at the welding of base bottom The top in road.

3. circle welding as claimed in claim 2 is segmented apparatus for shaping, it is characterised in that：The pedestal includes body and is located at The base of body bottom portion, opens up the welding passage passed through for welding on the base, and the welding passage includes gathering sill With shaping groove, the diameter of the depth more than welding of the gathering sill, the depth of the shaping groove is less than the diameter of welding, described whole Shape groove is located at the lower section of the bottom of the first pressure arm, is incited somebody to action with by the active force between the bottom land of the bottom of the first pressure arm and shaping groove Circular welding implements shaping.

4. circle welding as claimed in claim 3 is segmented apparatus for shaping, it is characterised in that：Also in the base of shaping groove both sides Spacing deep gouge is opened up on upper surface, the spacing deep gouge is used to accommodate the bottom of the first pressure arm, the bottom land of the spacing deep gouge Highly it is higher than the height of the bottom land of shaping groove, so that it is thick that flat welding is formed between the bottom land of the bottom land of spacing deep gouge and shaping groove Degree forms groove.

5. circle welding as claimed in claim 3 is segmented apparatus for shaping, it is characterised in that：The bottom land of the gathering sill and shaping Intermediate incline is set between the bottom land of groove, and the intermediate incline is located at the lower section of the bottom of the first pressure arm, with by gathering sill Bottom land, intermediate incline, shaping groove bottom land formed welding Z-type it is curved.

6. circle welding as claimed in claim 3 is segmented apparatus for shaping, it is characterised in that：First drive mechanism includes the The drive control device that one kinematic link and the first kinematic link of drive move up and down, one end of first depression bar and the first transmission The overlap joint of connecting rod.

7. circle welding as claimed in claim 1 is segmented apparatus for shaping, it is characterised in that：The circular welding segmentation shaping dress Putting also includes hold-down gear, and the hold-down gear includes the second depression bar, the second pressure arm, the second small axle, the second drive mechanism, described Second small axle passes through second depression bar, and the two ends of the second small axle are fixedly connected with pedestal, and the second depression bar is relative to the second small axle Can rotate, one end and second drive mechanism of second depression bar are overlapped, and the second depression bar is driven with by the second drive mechanism Moved up and down relative to pedestal, the top overlap joint of the other end of the second depression bar and the second pressure arm, the bottom of the second pressure arm passes through base Seat, and the welding passage positioned at base bottom top, and then will be located at below reshaping device by the bottom of the second pressure arm The run-out welding of circular welding is pushed down, and second drive mechanism includes the second kinematic link and drives the second kinematic link upper and lower The drive control device of motion, one end of second depression bar and the overlap joint of the second kinematic link.

8. a kind of series welding machine, it is characterised in that：It is whole including frame, the confession welding device being arranged in frame, circular welding segmentation Shape dress is put, cloth belting, and the confession welding device is used to supply welding to circular welding segmentation apparatus for shaping, the circular weldering Band segmentation apparatus for shaping is used for welding shaping and provides to cloth belting, and the cloth belting is used to export welding, described The drive mechanism and reshaping device of circular welding segmentation apparatus for shaping are set according to the quantity of solar battery sheet main gate line, described Circular welding segmentation reshaping device is the described circular welding segmentation apparatus for shaping of one of the claims 1 to 7.

9. a kind of circular welding is segmented shaping methods, it is characterised in that comprise the following steps：

Drive control device connects the mode of solar battery sheet, control the first drive mechanism action according to circular welding；

First drive mechanism drives the first depression bar of reshaping device to act upwards, and the first depression bar is pressed under the constraint of small axle with first The other end of arm overlap joint presses to pressure arm, the bottom of the first pressure arm is touched circular welding, and then in the active force of the first depression bar It is lower that circular welding is implemented into shaping；

First drive mechanism automatically resets, and the first depression bar retracts, and the first pressure arm automatically resets, and one section of shaping of circular welding is complete Into；

Repeat the above steps, the welding segmentation that will connect battery strings according to cell piece connected mode is shaped to required flat weldering Band.