Solar cell supply device for solar cell string welding machine

Abstract

The embodiment of the utility model provides a cell supply device for a solar cell string welding machine, comprising: a base; a storage tray placed on the top surface of the base and used for stacking and storing solar cells; and a cell conveying mechanism for transferring the solar cells in the storage tray to the welding table of the solar cell string welding machine one by one; and a control module; a plurality of storage trays are provided, each storage tray comprising a bottom plate and a limit unit; the control module comprises: a monitoring unit for respectively and in real time monitoring whether there are solar cells stored in the corresponding storage trays; and a controller for determining the storage tray storing the solar cells according to the monitoring result of the monitoring unit and controlling the cell conveying mechanism to extract the solar cells from the storage tray storing the solar cells. This embodiment can effectively improve the supply efficiency of solar cells.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of solar cell string welding machines, and in particular to a cell supply device of a solar cell string welding machine. Background Art

[0002] A solar cell string welding machine is usually equipped with a cell supply device for pre-storing solar cells and supplying solar cells to a welding station. An existing cell supply device includes a base, a storage tray fixed to the top surface of the base and used to stack and store solar cells, and a cell conveying mechanism for transferring the solar cells in the storage tray to the welding station of the solar cell string welding machine one by one; wherein each storage tray is assembled with a limiting unit for limiting the stacking area of ​​the solar cells.

[0003] The inventors found in the specific implementation that since the above-mentioned limit unit is usually directly assembled on the storage tray, when the solar cells in a certain stacking area are taken out, it is necessary to wait until the solar cells in the remaining stacking areas are taken out, and then control the solar cell stringer to stop, replace the storage tray loaded with solar cells as a whole, and then restart the solar cell stringer. The replacement efficiency of the solar cell is very low, which reduces the production efficiency. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the utility model is to provide a solar cell supply device for a solar cell string welding machine, which can effectively improve the supply efficiency of solar cells.

[0005] In order to solve the above technical problems, the embodiment of the utility model provides the following technical solutions: a solar cell supply device for a solar cell string welding machine, comprising:

[0006] abutment;

[0007] A storage tray placed on the top surface of the base and used for stacking and storing solar cells;

[0008] A cell conveying mechanism for transferring the solar cells in the storage tray piece by piece to a welding table of a solar cell string welding machine; and

[0009] A control module for controlling the cell conveying mechanism to extract solar cells one by one from the storage tray and transfer them to the welding table of the solar cell string welding machine;

[0010] There are multiple storage trays, each of which includes a bottom plate and a limiting unit assembled on the bottom plate and forming at least one stacking area on the bottom plate with a predetermined size for stacking solar cells of corresponding specifications;

[0011] The control module comprises: a plurality of monitoring units arranged in one-to-one correspondence with the storage trays, for respectively monitoring in real time whether the corresponding storage trays contain solar cells; and

[0012] The controller is connected to the monitoring unit and the cell conveying mechanism, and is used to determine the storage tray storing the solar cells according to the monitoring result of the monitoring unit and control the cell conveying mechanism to extract the solar cells from the storage tray storing the solar cells.

[0013] Furthermore, the top surface of the base is provided with a guiding and positioning structure for guiding the corresponding storage tray to be assembled to a predetermined position along the top surface of the base, and the guiding and positioning structure includes:

[0014] A first guide portion disposed on the top surface of the base; and

[0015] A second guide portion provided on the material storage tray and cooperating with the first guide portion to guide the material storage tray to slide in a directional manner; or, the guiding and positioning structure includes:

[0016] A first guide portion disposed on the top surface of the base; and

[0017] The second guide part and the third guide part are formed by the opposite side edges of the storage tray, and each storage tray is arranged side by side on the base in sequence, one of the storage trays is in abutment with the first guide part on the base with its second guide part, and the other storage trays are in abutment with the third guide part of the adjacent storage tray with their second guide part.

[0018] Furthermore, the guiding and positioning structure also includes: an end stopper located at the end of the sliding stroke of the storage tray and used for abutting against the corresponding end surface of the storage tray.

[0019] Furthermore, magnetic elements that can be magnetically attracted to each other are respectively provided on the end surface of the end stopper and the end surface of the storage tray.

[0020] Furthermore, an upper through hole is provided on the bottom plate in each stacking area, and a lower through hole is provided on the base corresponding to the upper through hole of the storage tray. The solar cell supply device also includes a lifting mechanism provided under the base for lifting the solar cells in the storage tray to a first predetermined height position, and a supporting plate is provided in each stacking area for the solar cells to be stacked thereon. The pushing end of the lifting mechanism passes through the lower through hole and the upper through hole in turn and then abuts against the bottom surface of the supporting plate to push the solar cells in the corresponding stacking area.

[0021] Furthermore, the base plate is provided with two parallel and alternately arranged sliding grooves in the stacking area and each extending a predetermined length, the limiting unit includes two fixed levers which are arranged in parallel and alternately and whose bottom ends are fixed to one side of the base plate, two movable levers which are slidably assembled at their bottom ends in a corresponding sliding groove and are used to cooperate with the two fixed levers to limit the opposite sides of the solar cell, and two side baffles which are respectively fixed at opposite ends of the stacking area and are used to cooperate with each other to limit the opposite ends of the solar cell, the extending direction of the sliding groove is perpendicular to the axial direction of the fixed lever, and a avoiding groove for the movable lever to pass through is provided on the support plate corresponding to each of the sliding grooves.

[0022] Furthermore, each of the stacking areas is configured with a plurality of support plates of different lengths corresponding to the length dimensions of different solar cells, and a support plate with the same length as the carried solar cell is placed in the stacking area, and the stacking area is also provided with a fixed baffle corresponding to each of the fixed levers on the side away from the fixed lever for cooperating with the two fixed levers to limit the opposite sides of the support plate, and the stacking area is provided with at least one group of locking holes at the position corresponding to each of the side baffles, and the center line of each of the locking holes in the same group is perpendicular to the extension direction of the sliding long groove, and each of the side baffles is locked in one of the locking holes by means of a locking piece, and the two side baffles are pressed against and limit the opposite ends of the support plate.

[0023] Furthermore, the cell supply device also includes an automatic correction mechanism arranged between the base and the welding table for correcting the solar cell, and the cell conveying mechanism includes a first conveying module arranged between the base and the automatic correction mechanism for conveying the solar cell in the base into the automatic correction mechanism for correction, and a second conveying module arranged between the automatic correction mechanism and the welding table for transferring the solar cell corrected in the automatic correction mechanism to the welding table; the first conveying module includes a first suction cup unit, a first lifting drive unit for driving the first suction cup unit to rise and fall to pick up and place the solar cell, and a first transverse driving unit for driving the first suction cup unit to move back and forth between the base and the automatic correction mechanism; the second conveying module includes a second suction cup unit, a second lifting drive unit for driving the second suction cup unit to rise and fall to pick up and place the solar cell, and a second transverse driving unit for driving the second suction cup unit to move back and forth between the automatic correction mechanism and the welding table, and the first suction cup unit and the second suction cup unit are respectively connected to an external negative pressure device.

[0024] Furthermore, the cell supply device also includes an automatic deflection correction mechanism disposed between the base platform and the welding platform for correcting the solar cell, and the cell conveying mechanism includes a first conveying module disposed between the base platform and the automatic deflection correction mechanism for conveying the solar cell in the base platform into the automatic deflection correction mechanism for correction, and a second conveying module disposed between the automatic deflection correction mechanism and the welding platform for transferring the solar cell corrected in the automatic deflection correction mechanism to the welding platform; the first conveying module includes a first suction cup unit, a first lifting drive unit for driving the first suction cup unit to rise and fall to pick up and place the solar cell, and a lifting drive unit for driving the first A first lateral drive unit for the suction cup unit to move back and forth between the base and the automatic deflection correcting mechanism; the second conveying module includes a second suction cup unit, a second lifting drive unit for driving the second suction cup unit to lift and lower to pick up and place solar cells, and a second lateral drive unit for driving the second suction cup unit to move back and forth between the automatic deflection correcting mechanism and the welding table, the first suction cup unit and the second suction cup unit are respectively connected to an external negative pressure device, and the first lifting drive unit drives the first suction cup unit to descend to a height that increases by the thickness of a solar cell compared with the previous time each time the first suction cup unit continuously absorbs solar cells from the same stacking area on the base.

[0025] Furthermore, the cell supply device further comprises a material taking auxiliary mechanism for assisting the cell conveying mechanism to take away the solar cells in the corresponding stacking area one by one, and the material taking auxiliary mechanism comprises:

[0026] A blowing nozzle connected to an external high-pressure air source through an air path with a control valve, wherein the blowing nozzle is arranged beside the stacking area and the air outlet is located at a first predetermined height position and is arranged toward the inside of the stacking area so as to blow air toward the solar cell sheets when the first suction cup unit reaches the first predetermined height position to separate the solar cell sheets of the uppermost layer from the solar cell sheets of the adjacent lower layer; and

[0027] A sensor disposed at the first predetermined height position on the side of each stacking area and configured to output a position signal when detecting the solar cell on the top of the supporting plate;

[0028] The controller is also connected to the sensor, the first transverse driving unit, the first lifting driving unit, the external negative pressure device, the lifting mechanism and the control valve respectively. When the external negative pressure device works and the first suction cup unit absorbs the solar cell, it sends an absorption signal. After determining the storage tray where the solar cells are stored according to the monitoring result of the monitoring unit, the controller controls the first transverse driving unit to drive the first suction cup unit to move above the storage tray where the solar cells are stored, and then controls the first lifting driving unit to drive the first suction cup unit to descend to the first predetermined height position and controls the lifting mechanism to drive the supporting plate to rise so that the solar cell at the top of the supporting plate rises to the first predetermined height position. In response to the second in-position signal, the external negative pressure device is controlled to work so that the first suction cup unit absorbs a solar cell at the top of the stacking area, and in response to the absorption signal, the lifting mechanism is controlled to drive the supporting plate to descend to a second preset height and the control valve is turned on so that the blowing nozzle is connected to the external high-pressure air source to blow air to the solar cell.

[0029] After adopting the above technical scheme, the embodiment of the utility model has at least the following beneficial effects: the battery cell supply device of the embodiment of the utility model stores solar cells by setting up multiple storage trays, and each storage tray can store solar cells of the same specification or different specifications, so that it is very convenient to manufacture solar panels composed of solar cells of the same specification or different specifications according to the design requirements of the solar panels to be serially welded; and the control module monitors in real time whether solar cells are stored in each storage tray through a monitoring unit, and controls the battery cell conveying mechanism to extract solar cells from the storage tray storing the solar cells. When the solar cells in a storage tray are extracted, it can automatically switch to the next storage tray storing the solar cells to extract the solar cells. The empty storage tray can be taken out from the base without stopping, and a new storage tray storing the solar cells can be loaded to complete the corresponding loading operation. The loading operation is very convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a schematic structural diagram of an overall cell transfer device of a cell supply device of a solar cell string welding machine according to an optional embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the disassembly of the base and storage tray of an optional embodiment of the solar cell supply device of the solar cell string welding machine of the utility model.

[0032] Figure 3This is a schematic diagram of the assembly of a base and a storage tray of an optional embodiment of a solar cell supply device of a solar cell string welding machine of the utility model.

[0033] Figure 4 This is a schematic diagram of the disassembly of a single limiting unit on a storage tray of an optional embodiment of a solar cell supply device of a solar cell string welding machine of the utility model.

[0034] Figure 5 This is a schematic diagram of the disassembly of various specifications of support plates in a single limiting unit on a storage tray in an optional embodiment of the solar cell supply device of the solar cell string welding machine of the utility model.

[0035] Figure 6 This is a disassembled schematic diagram of stacking solar cells in a single stacking area of ​​a base according to an optional embodiment of a solar cell supply device of a solar cell string welding machine of the utility model.

[0036] Figure 7 The present invention is a control principle block diagram of an optional embodiment of a solar cell supply device of a solar cell string welding machine. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. In addition, the embodiments and features in the embodiments of the present application may be combined with each other without conflict.

[0038] like Figure 1-Figure 7 As shown, an optional embodiment of the utility model provides a solar cell supply device for a solar cell string welding machine, comprising:

[0039] Abutment 1;

[0040] A storage tray 3 placed on the top surface of the base 1 and used for stacking and storing the solar cell sheets A;

[0041] A cell conveying mechanism 5 for transferring the solar cells A in the storage tray 3 piece by piece to the welding table B of the solar cell string welding machine; and

[0042] A control module 6 for controlling the cell conveying mechanism 5 to extract the solar cells A one by one from the storage tray 3 and transfer them to the welding station B of the solar cell string welding machine;

[0043] There are multiple storage trays 3, each of which includes a bottom plate 30 and a limiting unit 32 assembled on the bottom plate 30 and forming at least one stacking area C with a predetermined size for stacking solar cells A of corresponding specifications on the bottom plate 30;

[0044] The control module 6 includes: a plurality of monitoring units 60 arranged one by one corresponding to the storage trays 3, for respectively monitoring in real time whether the corresponding storage trays 3 contain solar cells A; and

[0045] The controller 62 is connected to the monitoring unit 60 and the cell conveying mechanism 5, and is used to determine the storage tray 3 storing the solar cell A according to the monitoring result of the monitoring unit 60 and control the cell conveying mechanism 5 to extract the solar cell A from the storage tray 3 storing the solar cell A.

[0046] The cell supply device of the utility model embodiment stores solar cells A by setting up multiple storage trays 3. Each storage tray 3 can store solar cells A of the same specification or solar cells A of different specifications, so that it is very convenient to manufacture a solar panel composed of solar cells A of the same specification or different specifications according to the design requirements of the solar panel to be serially welded; and the control module 6 monitors in real time whether the solar cells A are stored in each storage tray 3 through the monitoring unit 60, and controls the cell conveying mechanism 5 to extract the solar cells A from the storage tray 3 storing the solar cells A. When the solar cells A in a storage tray 3 are extracted, it can automatically switch to the next storage tray 3 storing the solar cells A to extract the solar cells A. The empty storage tray 3 can be taken out from the base platform 1 without stopping, and the new storage tray 3 storing the solar cells A can be loaded to complete the corresponding loading operation. The loading operation is very convenient and efficient.

[0047] In a specific implementation, there are many ways for the monitoring unit 60 to monitor whether there are solar cells A in the storage tray 3. For example, a through-beam sensor is respectively arranged on the bottom plate 30 and above the bottom plate 30 of each storage tray 3. When the through-beam sensors can receive each other's signals, it indicates that there are no solar cells A in the storage tray 3. Alternatively, a visual system is used to determine whether there are solar cells A in the storage tray 3 through image analysis.

[0048] In an optional embodiment of the present invention, Figure 2 As shown, the top surface of the base 1 is provided with a guide and positioning structure 10 for guiding the corresponding storage tray 3 to be assembled to a predetermined position along the top surface of the base 1, and the guide and positioning structure 10 includes:

[0049] A first guide portion 101 disposed on the top surface of the base 1; and

[0050] A second guide portion 103 disposed on the material storage tray 3 and cooperating with the first guide portion 101 to guide the material storage tray 3 to slide in a directional manner;

[0051] Alternatively, the guiding and positioning structure comprises:

[0052] A first guide portion 101 disposed on the top surface of the base 1; and

[0053] The second guide portion 103 and the third guide portion 105 are formed by the opposite side edges of the storage tray 3, and each storage tray 3 is arranged side by side on the base 1 in sequence, wherein one of the storage trays 3 is in abutment with the first guide portion 101 on the base 1 with the second guide portion 105, and the remaining storage trays 3 are in abutment with the third guide portion 105 of the adjacent storage tray 3 with the second guide portion 103.

[0054] In this embodiment, the first guide portion 101 can be a straight guide bar that is protruding, and the storage tray 3 is against the straight guide bar with the corresponding side edge, or a guide groove is formed on the bottom surface of the storage tray 3 to cooperate with the straight guide bar. The second guide portion 103 and the third guide portion 105 can also be a guide groove that is recessed, and correspondingly, corresponding protruding guide bars are formed on the bottom surface of the storage tray 3 to cooperate with the guide groove. In addition, the side edge of the storage tray 3 that has been assembled and positioned can also be used to form the second guide portion 103 and the third guide portion 105 to guide the adjacent storage tray 3. In this embodiment, only one straight guide bar needs to be set at a position close to one side edge to guide the first storage tray 3, and the remaining storage trays are all guided by the side edge of the previous storage tray to slide into place.

[0055] In an optional embodiment of the utility model, the guiding and positioning structure 10 further includes: an end stopper 107 located at the end of the sliding stroke of the material storage tray 3 for abutting against the corresponding end surface of the material storage tray 3. In this embodiment, the sliding stroke of the material storage tray 3 is effectively limited by providing the end stopper 107.

[0056] In an optional embodiment of the utility model, the end stopper 107 and the end surface of the storage tray 3 are respectively provided with magnetic elements that can be magnetically attracted to each other. In this embodiment, by providing magnetic elements that can be magnetically attracted to each other, it is ensured that after the storage tray 3 is installed in place, it is not easy to be offset, and stable positioning is achieved.

[0057] In an optional embodiment of the present invention, Figure 2-Figure 4As shown, an upper through hole 301 is provided on the bottom plate 30 in each stacking area C, and a lower through hole 12 is also provided on the base 1 corresponding to the upper through hole 301 of the storage tray 3. The cell supply device also includes a lifting mechanism 7 arranged below the base 1 for lifting the solar cell A in the storage tray 3 to a first predetermined height position, and a supporting plate 34 is provided in each stacking area C for the solar cell A to be stacked thereon, and the pushing end of the lifting mechanism 7 passes through the lower through hole 12 and the upper through hole 301 in sequence and then abuts against the bottom surface of the supporting plate 34 to push the solar cell A in the corresponding stacking area C. In the present embodiment, a lifting mechanism 7 is provided to sequentially pass through the lower through hole 12 and the upper through hole 301 to push the solar cell A in the corresponding stacking area C, so that the solar cell conveying mechanism 5 can quickly remove the solar cell A from the stacking area C. A supporting plate 34 is provided in each stacking area C to prevent the pushing end of the lifting mechanism 7 from directly contacting the solar cell A, thereby effectively protecting the solar cell A.

[0058] In an optional embodiment of the present invention, Figure 4 As shown, the bottom plate 30 is provided with two parallel and alternately arranged sliding long grooves 303 extending to a predetermined length in the stacking area C, the limiting unit 32 includes two fixed levers 321 arranged in parallel and alternately and both bottom ends of which are fixed to one side of the bottom plate 30, an active lever 323 whose two bottom ends are respectively slidably assembled in a corresponding one of the sliding long grooves 303 for cooperating with the two fixed levers 321 to limit the opposite sides of the solar cell A, and two side baffles 325 respectively fixed at opposite ends of the stacking area C for cooperating with each other to limit the opposite ends of the solar cell A, the extending direction of the sliding long groove 303 is perpendicular to the axial direction of the fixed lever 321, and a avoiding long groove 341 for the active lever 323 to pass through is provided on the supporting plate 34 corresponding to each of the sliding long grooves 303. In this embodiment, two movable levers 323 are used to slide relative to the fixed lever 321 in the sliding groove 303, so that the stacking area C can be compatible with solar cells A of different widths. At the same time, two side baffles 325 are used to limit the opposite ends of the solar cell A, thereby effectively supporting and positioning the solar cell A.

[0059] In a specific implementation, at least one of the fixed lever 321 and the movable lever 323 has a circular cross section to reduce contact with the edge of the solar cell A, reduce friction, and avoid damage to the solar cell A.

[0060] In an optional embodiment of the present invention, Figure 4-Figure 5As shown, each stacking area C is configured with a plurality of supporting plates 34 of different lengths corresponding to the length dimensions of different solar cells A. The supporting plates 34 of the same length as the carried solar cells A are placed in the stacking area C. The stacking area C is also provided with a fixed baffle 327 corresponding to each fixed baffle 321 on the side away from the fixed lever 321, which is used to cooperate with the two fixed levers 321 to limit the opposite sides of the supporting plate 34. The stacking area C is provided with at least one group of locking holes 305 at the position corresponding to each side baffle 325. The center line of each locking hole 305 in the same group is perpendicular to the extension direction of the sliding slot 303. Each side baffle 325 is correspondingly locked in one locking hole 305 by means of a locking piece, and the two side baffles 325 abut against the opposite ends of the supporting plate 34 to limit the position. In this embodiment, each stacking area C is configured with a plurality of supporting plates 34 of different lengths (such as Figure 5 As shown in the figure, different dotted line patterns represent other optional sizes of support plates 125), by selecting the locking holes 305 corresponding to each side baffle plate 321, the distance between the two side baffle plates 321 can be flexibly adjusted to adapt to the corresponding lengths of the support plates 34 and the solar cell panels A, thereby improving the compatibility of the limiting unit 32; and by setting a fixed baffle 327, it can cooperate with the fixed lever 321 to limit the support plate 34, thereby preventing the support plate 34 from deflecting during transportation.

[0061] In specific implementation, Figure 2-Figure 6 As shown, a push-pull block 30a is fixedly provided at one end of the bottom plate 30, so as to facilitate the user to pull out the storage tray 3; in addition, at least two limit units 32 are assembled along the length direction of the bottom plate 30 of each pull-out module 12. In this embodiment, at least two limit units 32 are provided along the length direction of each storage tray 3, and the operator can load the stacking area C of at least two limit units 32 at the same time, thereby improving the loading efficiency of the solar cell A.

[0062] In an optional embodiment of the present invention, Figure 1As shown, the cell supply device also includes an automatic correction mechanism 8 arranged between the base 1 and the welding station B for correcting the solar cell A, and the cell conveying mechanism 5 includes a first conveying module 50 arranged between the base 1 and the automatic correction mechanism 8 for conveying the solar cell A in the base 1 into the automatic correction mechanism 8 for correction, and a second conveying module 52 arranged between the automatic correction mechanism 8 and the welding station B for transferring the solar cell A corrected in the automatic correction mechanism 8 to the welding station B; the first conveying module 50 includes a first suction cup unit 501 for driving the first suction cup unit 50 The first lifting driving unit 503 is used for lifting up and down to pick up and place the solar cell A, and the first lateral movement driving unit 505 is used for driving the first suction cup unit 501 to move back and forth between the base 1 and the automatic deviation correcting mechanism 8; the second conveying module 52 includes a second suction cup unit 521, a second lifting driving unit 523 is used for driving the second suction cup unit 521 to lift up and down to pick up and place the solar cell A, and a second lateral movement driving unit 525 is used for driving the second suction cup unit 521 to move back and forth between the automatic deviation correcting mechanism 8 and the welding table B, and the first suction cup unit 501 and the second suction cup unit 521 are respectively connected to the external negative pressure device D. Since the solar cell A is usually stacked directly in the base 1 manually, the stacking of each solar cell A is uneven. When the cell conveying mechanism 5 directly delivers the tilted stacked solar cell A to the welding table B, it is impossible to ensure that the welding part of the solar cell A is accurately aligned with the welding strip, which causes the solar cell A and the welding strip to be misaligned, and the welding yield is relatively poor. For this reason, in this embodiment, the cell supply device is further provided with an automatic correction mechanism 8, and the first conveying module 50 of the cell conveying mechanism 5 is used to first send the solar cell A in the base 1 into the automatic correction mechanism 8 for correction, and then the second conveying module 52 of the cell conveying mechanism 5 transfers the corrected solar cell A to the welding table B, thereby ensuring that the welding part of the solar cell A is accurately aligned with the welding strip. The first conveying module 50 and the second conveying module 52 both use corresponding suction cup units to absorb the solar cell A, and use corresponding lifting drive units and lateral drive units to drive the suction cup units to move in two dimensions, which can effectively realize the transfer of the solar cell A between various positions.

[0063] In an optional embodiment of the present invention, Figure 1As shown, the cell supply device also includes an automatic correction mechanism 8 arranged between the base platform 1 and the welding station B for correcting the solar cell A, and the cell conveying mechanism 5 includes a first conveying module 50 arranged between the base platform 1 and the automatic correction mechanism 8 for conveying the solar cell A in the base platform 1 into the automatic correction mechanism 8 for correction, and a second conveying module 52 arranged between the automatic correction mechanism 8 and the welding station B for transferring the solar cell A corrected in the automatic correction mechanism 8 to the welding station B; the first conveying module 50 includes a first suction cup unit 501, a first lifting drive unit 503 for driving the first suction cup unit 501 to rise and fall to pick up and place the solar cell A, and a first lifting drive unit 503 for driving the first suction cup unit 501 to move upward and downward to pick up and place the solar cell A, and a second lifting drive unit 504 for driving the first suction cup unit 501 to move upward and downward to pick up and place the solar cell A. A first transverse driving unit 505 moves back and forth between the base 1 and the automatic deflection correcting mechanism 8; the second conveying module 52 includes a second suction cup unit 521, a second lifting driving unit 523 for driving the second suction cup unit 521 to move up and down to pick up and place the solar cell A, and a second transverse driving unit 525 for driving the second suction cup unit 521 to move back and forth between the automatic deflection correcting mechanism 8 and the welding table B, the first suction cup unit 501 and the second suction cup unit 521 are respectively connected to an external negative pressure device D, and the first lifting driving unit 503 drives the first suction cup unit 501 to descend to a height that is increased by the thickness of one solar cell A compared with the previous time each time the first suction cup unit 501 continuously absorbs the solar cell A from the same stacking area C on the base 1. In the present embodiment, there is no need to lift the solar cell A in the stacking area C by setting up the lifting mechanism 7. Instead, the first lifting drive unit 503 increases the thickness of one solar cell A compared to the previous height at which the first suction cup unit 501 was driven to descend each time the first suction cup unit 501 continuously absorbs the solar cell A from the same stacking area C on the base 1, thereby ensuring that a solar cell A on the top can always be absorbed.

[0064] In specific implementation, Figure 1 As shown, the moving direction of the output end of the first transverse driving unit 505 is perpendicular to the directional sliding direction of the material storage tray 3 on the top surface of the base 1. In this embodiment, the above-mentioned configuration allows the first transverse driving unit 505 to drive the first suction cup unit 501 to pick up materials, and the first suction cup unit 501 always picks up materials from each stacking area C in the same material storage tray 3 at the same time, making it convenient for operators to load and unload other material storage trays 3 while picking up materials.

[0065] In an optional embodiment of the present invention, Figure 1-Figure 7As shown, the cell supply device further includes a material taking auxiliary mechanism 9 for assisting the cell conveying mechanism 5 to take away the solar cells A in the corresponding stacking area C piece by piece, and the material taking auxiliary mechanism 9 includes:

[0066] A blowing nozzle 90 connected to an external high-pressure air source F through an air path with a control valve E, wherein the blowing nozzle 90 is arranged beside the stacking area C and an air outlet 901 is located at a first predetermined height position and is arranged toward the inside of the stacking area C so as to blow air toward the solar cell A when the first suction cup unit 501 reaches the first predetermined height position, thereby causing the uppermost layer of solar cell A to be separated from the adjacent lower layer of solar cell A; and

[0067] A sensor 92 (such as a sensor 92) is provided at the first predetermined height position on the side of each stacking area C and is used to output a signal of arrival when detecting the solar cell A at the top of the supporting plate 34. Figure 6 shown);

[0068] The controller 60 (such as Figure 7 The controller 62 is also respectively connected to the sensor 92, the first transverse driving unit 505, the first lifting driving unit 503, the external negative pressure device D, the lifting mechanism 7 and the control valve E. When the external negative pressure device D works and the first suction cup unit 501 absorbs the solar cell A, it sends an adsorption signal. After the controller 62 determines the storage tray 3 storing the solar cell A according to the monitoring result of the monitoring unit 60, it controls the first transverse driving unit to drive the first suction cup unit 501 to move to the top of the storage tray 3 storing the solar cell A, and then controls the first lifting driving unit 503 to drive the first suction cup unit 501 to move to the top of the storage tray 3 storing the solar cell A. The first suction cup unit 501 descends to the first predetermined height position and controls the lifting mechanism 7 to drive the supporting plate 34 to rise so that the solar cell A at the top of the supporting plate 34 rises to the first predetermined height position, and in response to the second in-position signal, controls the external negative pressure device E to work so that the first suction cup unit 501 adsorbs a solar cell A at the top of the stacking area C, and in response to the adsorption signal, controls the lifting mechanism 7 to drive the supporting plate 34 to descend to the second preset height and controls the control valve E to be turned on so that the blowing nozzle 90 is connected to the external high-pressure air source F to blow air to the solar cell A.

[0069] In a specific implementation, the position of each stacking area C is usually set. For example, the distances between each stacking area C and the discharge position of the first suction cup unit 501 for releasing the solar cell A are 1 meter, 2 meters and 3 meters respectively. When the controller 62 controls the first lateral movement drive unit 505 to drive the first suction cup unit 501 to the top of the stacking area C where the solar cell A exists, the controller 62 directly controls the first lateral movement drive unit 505 to drive the first suction cup unit 501 to move the response distance according to the pre-set distance.

[0070] In this embodiment, Figure 7 As shown, the working principle of the material taking auxiliary mechanism 9 is roughly as follows:

[0071] The controller 62 controls the first lateral driving unit 505 to drive the first suction cup unit 501 to the top of the stacking area C where the solar cell A exists according to the monitoring result of the monitoring unit 60;

[0072] Next, the controller 62 controls the first lifting drive unit 503 to drive the first suction cup unit 501 to descend to the first predetermined height position (i.e., the material picking position), and at the same time, the lifting mechanism 7 drives the support plate 34 to rise so that the solar cell A at the top of the support plate 34 rises to the first predetermined height position, ensuring that the first suction cup unit 501 can adsorb a solar cell A at the top of the support plate 34, and when the in-place sensor 92 detects that the solar cell A at the top of the support plate 34 rises to the first predetermined height position, a second in-place signal is issued;

[0073] Then, the controller 62 responds and controls the external negative pressure device D to work so that the first suction cup unit 501 adsorbs a solar cell A on the top of the support plate 34, and the external negative pressure device D outputs an adsorption signal according to its own air pressure value;

[0074] Finally, due to static electricity and other reasons, the sides of the two adjacent solar cells A at the top are adhered together. For this reason, after the first suction cup unit 501 adsorbs a solar cell A at the top of the support plate 34, the controller 62 controls the lifting mechanism 7 in response to the adsorption signal to drive the support plate 34 to descend to a second preset height, so that a solar cell A at the top of the support plate 34 and an adjacent solar cell A generate a separation force due to their own weight. At the same time, the controller 62 controls the control valve E to open, and the external high-pressure air source F supplies air to the blowing nozzle 90, and the blowing nozzle 90 blows air from the air outlet 901 to the joint of the two solar cells A, and finally separates the two solar cells A. Finally, the solar cell A at the top of the support plate 125 can be removed to achieve material removal.

[0075] In specific implementation, Figure 1-Figure 3 and Figure 6As shown, the blowing nozzle 90 can be a blowing column fixed on the base 1, and is arranged one by one corresponding to each stacking area C; of course, the blowing nozzle 90 can also be fixed on the first suction cup unit 501 and move synchronously with the first suction cup unit 501.

[0076] In specific implementation, Figure 1 As shown, the first conveying module 50 is provided with two first suction cup units 501 separated by a first predetermined distance, and the first predetermined distance is adapted to the distance between two adjacent stacking areas C in the base 1; the second conveying module 52 is provided with two second suction cup units 521 separated by a second predetermined distance, and the second predetermined distance is adapted to the distance between two corrected solar cells A in the automatic correcting mechanism 5.

[0077] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all belong to the protection scope of the utility model.

Claims

1. A solar cell supply device for a solar cell string welding machine, comprising: abutment; A storage tray placed on the top surface of the base and used for stacking and storing solar cells; A cell conveying mechanism for transferring the solar cells in the storage tray piece by piece to a welding table of a solar cell string welding machine; and A control module for controlling the cell conveying mechanism to extract solar cells one by one from the storage tray and transfer them to the welding table of the solar cell string welding machine; Characterized in that a plurality of storage trays are provided, each of which comprises a bottom plate and a limiting unit assembled on the bottom plate and forming at least one stacking area having a predetermined size for stacking solar cells of corresponding specifications on the bottom plate; The control module comprises: a plurality of monitoring units arranged in one-to-one correspondence with the storage trays, for respectively monitoring in real time whether the corresponding storage trays contain solar cells; and The controller is connected to the monitoring unit and the cell conveying mechanism, and is used to determine the storage tray storing the solar cells according to the monitoring result of the monitoring unit and control the cell conveying mechanism to extract the solar cells from the storage tray storing the solar cells.

2. The solar cell supply device for the solar cell string welding machine according to claim 1, characterized in that: The top surface of the base is provided with a guide and positioning structure for guiding the corresponding storage tray to be assembled to a predetermined position along the top surface of the base, and the guide and positioning structure includes: A first guide portion disposed on the top surface of the base; and A second guide portion provided on the material storage tray and cooperating with the first guide portion to guide the material storage tray to slide in a directional manner; Alternatively, the guiding and positioning structure comprises: A first guide portion disposed on the top surface of the base; and The second guide part and the third guide part are formed by the opposite side edges of the storage tray, and each storage tray is arranged side by side on the base in sequence, one of the storage trays is in abutment with the first guide part on the base with its second guide part, and the other storage trays are in abutment with the third guide part of the adjacent storage tray with their second guide part.

3. The solar cell supply device for the solar cell string welding machine according to claim 2, characterized in that: The guiding and positioning structure further comprises an end stopper located at the end of the sliding stroke of the material storage tray and used for abutting against the corresponding end surface of the material storage tray.

4. The solar cell supply device for the solar cell string welding machine according to claim 3, characterized in that: The end stopper and the end surface of the material storage tray are also respectively provided with magnetic elements that can be magnetically attracted to each other.

5. The solar cell supply device for the solar cell string welding machine according to claim 1, characterized in that: The bottom plate is provided with an upper through hole in each stacking area, and the base is also provided with a lower through hole corresponding to the upper through hole of the storage tray. The solar cell supply device also includes a lifting mechanism arranged under the base for lifting the solar cells in the storage tray to a first predetermined height position, and each stacking area is provided with a supporting plate for the solar cells to be stacked thereon, and the pushing end of the lifting mechanism passes through the lower through hole and the upper through hole in turn and then abuts against the bottom surface of the supporting plate to push the solar cells in the corresponding stacking area.

6. The solar cell supply device for the solar cell string welding machine according to claim 5, characterized in that: The bottom plate is provided with two parallel sliding grooves arranged alternately and extending to a predetermined length in the stacking area, and the limiting unit includes two fixed levers arranged alternately and parallelly and fixed at the bottom ends to one side of the bottom plate, two movable levers with two bottom ends respectively slidably assembled in a corresponding sliding groove for cooperating with the two fixed levers to limit the opposite sides of the solar cell, and two side baffles respectively fixed at the opposite ends of the stacking area for cooperating with each other to limit the opposite ends of the solar cell, the extension direction of the sliding groove is perpendicular to the axial direction of the fixed lever, and a avoiding groove for the movable lever to pass through is provided on the support plate corresponding to each of the sliding grooves.

7. The solar cell supply device for the solar cell string welding machine according to claim 6, characterized in that: Each stacking area is configured with a plurality of support plates of different lengths corresponding to the length dimensions of different solar cells, and a support plate with the same length as the carried solar cell is placed in the stacking area, and the stacking area is also provided with a fixed baffle corresponding to each fixed baffle on the side away from the fixed lever, which is used to cooperate with the two fixed levers to limit the opposite sides of the support plate, and the stacking area is provided with at least one group of locking holes at the position corresponding to each side baffle, and the center line of each locking hole in the same group is perpendicular to the extension direction of the sliding long groove, and each side baffle is locked in one of the locking holes by means of a locking piece, and the two side baffles are pressed against and limit the opposite ends of the support plate.

8. The solar cell supply device for the solar cell string welding machine according to claim 5, characterized in that: The cell supply device also includes an automatic deflection correction mechanism disposed between the base platform and the welding station for correcting the solar cell, the cell conveying mechanism includes a first conveying module disposed between the base platform and the automatic deflection correction mechanism for conveying the solar cell in the base platform into the automatic deflection correction mechanism for correction, and a second conveying module disposed between the automatic deflection correction mechanism and the welding station for transferring the solar cell corrected in the automatic deflection correction mechanism to the welding station; the first conveying module includes a first suction cup unit, a first lifting drive unit for driving the first suction cup unit to rise and fall to pick up and place the solar cell, and a first transverse driving unit for driving the first suction cup unit to move back and forth between the base platform and the automatic deflection correction mechanism; the second conveying module includes a second suction cup unit, a second lifting drive unit for driving the second suction cup unit to rise and fall to pick up and place the solar cell, and a second transverse driving unit for driving the second suction cup unit to move back and forth between the automatic deflection correction mechanism and the welding station, and the first suction cup unit and the second suction cup unit are respectively connected to an external negative pressure device.

9. The solar cell supply device for the solar cell string welding machine according to claim 1, characterized in that: The cell supply device also includes an automatic correction mechanism disposed between the base and the welding table for correcting the solar cell, the cell conveying mechanism includes a first conveying module disposed between the base and the automatic correction mechanism for conveying the solar cell in the base into the automatic correction mechanism for correction, and a second conveying module disposed between the automatic correction mechanism and the welding table for transferring the solar cell corrected in the automatic correction mechanism to the welding table; the first conveying module includes a first suction cup unit, a first lifting drive unit for driving the first suction cup unit to lift up and down to pick up and place the solar cell, and a lifting drive unit for driving the first suction cup unit to lift up and down to pick up and place the solar cell. The first conveying module includes a first lateral driving unit for moving back and forth between the base and the automatic deflection-correcting mechanism; the second conveying module includes a second suction cup unit, a second lifting driving unit for driving the second suction cup unit to lift and lower to pick up and place the solar cell, and a second lateral driving unit for driving the second suction cup unit to move back and forth between the automatic deflection-correcting mechanism and the welding table, the first suction cup unit and the second suction cup unit are respectively connected to an external negative pressure device, the first lifting driving unit drives the first suction cup unit to descend to a height that increases by the thickness of one solar cell compared with the last time each time the first suction cup unit continuously absorbs solar cells from the same stacking area on the base.

10. The solar cell supply device for the solar cell string welding machine according to claim 8, characterized in that: The cell supply device further comprises a material taking auxiliary mechanism for assisting the cell conveying mechanism to take away the solar cells in the corresponding stacking area one by one, and the material taking auxiliary mechanism comprises: A blowing nozzle connected to an external high-pressure air source through an air path with a control valve, wherein the blowing nozzle is arranged beside the stacking area and the air outlet is located at a first predetermined height position and is arranged toward the inside of the stacking area so as to blow air toward the solar cell sheets when the first suction cup unit reaches the first predetermined height position to separate the solar cell sheets of the uppermost layer from the solar cell sheets of the adjacent lower layer; and A sensor disposed at the first predetermined height position on the side of each stacking area and configured to output a position signal when detecting the solar cell on the top of the supporting plate; The controller is also connected to the sensor, the first transverse driving unit, the first lifting driving unit, the external negative pressure device, the lifting mechanism and the control valve respectively. When the external negative pressure device works and the first suction cup unit absorbs the solar cell, it sends an absorption signal. After determining the storage tray where the solar cells are stored according to the monitoring result of the monitoring unit, the controller controls the first transverse driving unit to drive the first suction cup unit to move above the storage tray where the solar cells are stored, and then controls the first lifting driving unit to drive the first suction cup unit to descend to the first predetermined height position and controls the lifting mechanism to drive the supporting plate to rise so that the solar cell at the top of the supporting plate rises to the first predetermined height position. In response to the in-position signal, the external negative pressure device is controlled to work so that the first suction cup unit absorbs a solar cell at the top of the stacking area, and in response to the absorption signal, the lifting mechanism is controlled to drive the supporting plate to descend to a second preset height and the control valve is controlled to be turned on so that the blowing nozzle is connected to the external high-pressure air source to blow air to the solar cell.

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