Solar cell printing string stacking process, equipment and string stacking process

Abstract

The present invention discloses a solar cell printing and stacking process, equipment and stacking process, including the following steps: step S1, prepare a number of battery chips; step S2, set a conductive layer on one end of the surface of the battery chip; step S3, stack a number of battery chips with conductive layers, the stacking process is: first provide a carrier, then put a number of battery chips with conductive layers on the carrier to stack and arrange them into a group string, and then put the group string fixing parts on the group string to press and hold the group string on the carrier. In this way, a group string battery module is formed, and no loosening or deviation will occur when entering the furnace for transportation, which improves the quality of the solidified connection of the solar cell stacking. The implementation method is simple and ingenious, feasible and reliable, and has strong practicality for mass production; at the same time, the equipment for implementing the process can be simply realized, which reduces production costs, improves market competitiveness, and better popularizes and promotes solar cell products, and also benefits the general public.

Description

Technical Field

[0001] The invention relates to the field of solar cell shingle assembly technology, and in particular to a solar cell printing string stacking process, equipment and string stacking process. Background Art

[0002] At present, the solar cell shingled assembly is mainly loaded first, the whole cell (also refers to the larger cell) is laser scribed, and then the whole cell is moved to the printing station for printing to form a conductive layer. After printing, the whole cell is broken, and then several small cells are stacked and arranged. After the shingles are stacked and arranged, they are sent to a high-temperature furnace for curing.

[0003] In the traditional production process, the existing equipment is only suitable for the production of solar cell modules above 300W / pc. For small-power modules below 100W / pc for civilian use, the large equipment, high cost and low output value are not conducive to application production and equipment investment, which limits the fully automated production and processing of small-power modules below 100W / pc for civilian use. At the same time, since the number of stacked tiles of small modules is generally less than 36, displacement is easy to occur during high-temperature welding, and the defective rate cannot be controlled.

[0004] Therefore, in the present invention, the applicant has carefully studied a new technical solution to solve the above problems. Summary of the invention

[0005] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a solar cell printing and stacking process, equipment and stacking process. The stacking process is simple and ingenious, which solves the loosening and offset phenomenon of traditional technology and improves the quality of curing connection of solar cell stacking. At the same time, the equipment for implementing the process can be simply realized, the structure of the whole equipment is compact and small, and the equipment cost is reduced.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A solar cell string stacking process first provides a carrier board, then places a number of small solar cell sheets with a conductive layer on the carrier board in sequence to form a string in a shingled manner, and then places a string fixing piece on the string to press and hold the string on the carrier board.

[0008] A solar cell printing and string stacking process includes the following steps:

[0009] Step S1, preparing a number of battery chips;

[0010] Step S2, providing a conductive layer on one end of the surface of the battery chip;

[0011] Step S3, stacking a number of small battery sheets provided with a conductive layer in series. The string stacking process is: first provide a carrier board, then place a number of small battery sheets provided with a conductive layer on the carrier board to stack and arrange the sheets to form a string, and then place a string fixing piece on the string to press and hold the string in place on the carrier board.

[0012] As a preferred solution, a battery chip loading station, a printing waiting station, a battery chip positioning station, and a stacking station are arranged in sequence from front to back;

[0013] The battery chips prepared in step S1 are placed at the battery chip loading station, and the first robot moves the battery chips from the battery chip loading station to the battery chip positioning station for positioning; the printing system moves from the waiting printing station to the battery chip positioning station for step S2, and then resets to the waiting printing station; in step S3, the carrier is located at the stacking station, and the battery chips with the conductive layer printed on the battery chip positioning station are moved by the second robot to the carrier for stacking and arranging to form a string.

[0014] As a preferred solution, in step S3, the carrier plate is intermittently displaced at the stacking station and gradually moves away from the battery chip positioning station, and the second manipulator is equidistantly displaced from the battery chip positioning station to the carrier plate to achieve stacking and arrangement of battery chips at the same time.

[0015] A solar cell printing and string stacking device includes a small cell automatic feeding system, a small cell automatic printing system, an automatic string stacking system, a carrier board feeding system and a string fixing part feeding system; wherein:

[0016] The automatic battery sheet feeding system is used to deliver the battery sheets to the automatic battery sheet printing system, the carrier feeding system is used to provide the carrier to the automatic string stacking system, the automatic string stacking system is used to place the battery sheets with printed conductive layers on the carrier to stack and arrange the sheets to form strings, and the string fixing part feeding system is used to place the string fixing parts on the string to press and hold the string in place on the carrier.

[0017] As a preferred solution, the battery chip automatic printing system has a battery chip automatic positioning system; the battery chip automatic feeding system is used to deliver the battery chip to the battery chip automatic positioning system, and the battery chip automatic printing system moves to the battery chip automatic positioning system to perform printing;

[0018] The automatic string stacking system includes a moving table and a second manipulator; the plate loading system is used to provide the plate carrier to the moving table; when stacking the tiles, the moving table moves intermittently from front to back, and the second manipulator moves back and forth between the moving table and the battery chip automatic positioning system at equal distances along the front and rear directions.

[0019] As a preferred solution, the battery chip automatic positioning system has a battery chip positioning station, and a fixed block, a front slider, a left slider and a right slider are respectively arranged around the battery chip positioning station; the front slider is connected to a first drive unit for controlling its front and rear displacement, the left slider is connected to a second drive unit for controlling its left and right displacement, and the right slider is connected to a third drive unit for controlling its left and right displacement.

[0020] As a preferred solution, the battery chip automatic printing system also includes a printing frame, a fourth drive unit for controlling the forward and backward displacement of the printing frame, a fifth drive unit for controlling the upward and downward displacement of the printing frame, a scraper assembly, a sixth drive unit for controlling the forward and backward displacement of the scraper assembly relative to the printing frame, and a seventh drive unit for controlling the upward and downward displacement of the scraper assembly relative to the printing frame.

[0021] As a preferred solution, the plate carrier feeding system and the string fixing part feeding system share a transport drive unit, and the transport drive unit controls a common robotic arm to automatically move, and the common robotic arm is respectively connected to a plate carrier feeding robot and a string fixing part feeding robot.

[0022] As a preferred solution, the rear side of the mobile platform is connected to a string battery cell module conveying system; the mobile platform is provided with an eighth driving unit for controlling its lifting action, and the mobile platform moves the carrier toward the string battery cell module conveying system, and then descends to transfer the string battery cell module to the string battery cell module conveying system.

[0023] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0024] First, a plurality of small battery sheets provided with a conductive layer are placed on a carrier to stack and arrange the sheets to form a string, and then a string fixing piece is placed on the string to press and hold the string on the carrier. In this way, a string battery sheet module is formed, which will not loosen or deviate when being transported into the furnace, thereby improving the quality of the solidified connection of the solar cell sheets after stacking. The implementation method is simple and ingenious, feasible and reliable, and has strong practicality for mass production.

[0025] 2. For the entire solar cell printing and string stacking process, a number of small battery pieces are prepared first, and then a conductive layer is set on one end of the surface of the small battery piece, and then the "cutting board + string assembly + string fixing piece" method is used to stack and position the strings. This is especially suitable for the production of solar cells with lower power. The process is simple, and the equipment for implementing the process can be easily implemented, which reduces production costs. It is especially suitable for small and medium-sized enterprises to process and produce solar cells and enhance market competitiveness. At the same time, it is conducive to reducing the cost and market sales price of solar cell products, better popularizing and promoting solar cell products, and also benefiting the general public.

[0026] 3. The solar cell printing and string stacking equipment of the present invention has a reasonable design for the functional parts such as the printing system, automatic string stacking system, carrier board loading system and string fixing part loading system, so that the structure of the whole equipment is compact and small in size, the equipment cost is reduced, the action stroke between different workstations is shortened, and the production and processing efficiency is improved.

[0027] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a first assembled stereoscopic diagram of an embodiment of the present invention (including a device cover and a machine base);

[0029] Figure 2 It is a second assembled stereoscopic view of an embodiment of the present invention (the equipment cover and the machine base are not shown);

[0030] Figure 3 yes Figure 2 Another perspective view of the structure shown;

[0031] Figure 4 yes Figure 2 a side view of the structure shown;

[0032] Figure 5 yes Figure 2 a top view of the structure shown;

[0033] Figure 6 is a three-dimensional diagram of a battery chip bin according to an embodiment of the present invention;

[0034] Figure 7 It is a three-dimensional diagram of a first manipulator and a second manipulator according to an embodiment of the present invention;

[0035] Figure 8 yes Figure 2 A partial enlarged diagram of

[0036] Fig. 9 is a three-dimensional diagram of a battery chip automatic printing system according to an embodiment of the present invention;

[0037] Fig.10 yes Fig. 9 Another perspective view of the structure shown;

[0038] Fig.11 is a three-dimensional diagram of a battery chip automatic positioning system according to an embodiment of the present invention;

[0039] Fig.12 is a three-dimensional diagram of a mobile station according to an embodiment of the present invention;

[0040] Fig.13It is a three-dimensional diagram of a carrier storage bin and a string fixing member storage bin according to an embodiment of the present invention;

[0041] Fig.14 It is a three-dimensional diagram of a carrier feeding system and a string fixing member feeding system according to an embodiment of the present invention (the carrier storage bin and the string fixing member storage bin are not shown);

[0042] Fig.15 It is a schematic structural diagram of a string battery cell module composed of a carrier board, a string, and a string fixing member according to an embodiment of the present invention;

[0043] Fig.16 is a diagram showing the process of stacking solar cells in series according to an embodiment of the present invention;

[0044] Fig.17 It is a simplified diagram of the device action flow of an embodiment of the present invention.

[0045] Description of the accompanying drawings:

[0046] Battery chip 2, string 10, carrier 1, string fixing part 3, battery chip loading station 101, waiting printing station 102, battery chip positioning station 103, stacking station 104, first manipulator 105, printing system 106, second manipulator 107, battery chip bin 108, control printing frame 109, fourth drive unit 110, fifth drive unit 111, scraper assembly 112, sixth drive unit 113, seventh drive unit 114, fixing block 115, front slider 116, left slider 117 and right slider 118, The movable table 119, the slide rail base 120, the slide rail 121, the motor 122, the screw 123, the slider 124, the eighth drive unit 125, the pin hole 126, the pin 127, the transport drive unit 128, the common robot arm 129, the plate carrier loading robot 130, the string fixing part loading robot 131, the plate carrier storage bin 132, the string fixing part storage bin 133, the first up and down displacement drive mechanism 134, the second up and down displacement drive mechanism 135, the left and right displacement drive mechanism 136, the conveying track 137, the make way space 138, and the high temperature furnace 200. DETAILED DESCRIPTION

[0047] Please refer to Figures 1 to 17 As shown, it shows the specific process and structure of an embodiment of the present invention.

[0048] First, please refer to Fig.15 shown.

[0049] In this embodiment, the focus is on the convenience of curing in the furnace after the battery chips 2 with a conductive layer are stacked in a simple and clever way to ensure that the string 10 will not loosen or deviate when transported into the furnace, thereby improving the quality of the cured connection after the solar cell stacking. Specifically: a solar cell stacking process, first providing a carrier 1, then placing a number of battery chips 2 with a conductive layer on the carrier 1 in sequence to form a string 10 in a shingled arrangement, and then placing a string fixing member 3 on the string 10 to press and hold the string 10 on the carrier 1, so as to form a string battery module.

[0050] Next, please combine Fig.16 and Fig.17 shown.

[0051] A solar cell printing and string stacking process includes the following steps:

[0052] Step S1, preparing a plurality of battery chips 2;

[0053] Step S2, providing a conductive layer on one end of the surface of the battery chip 2;

[0054] Step S3, stacking a plurality of battery cells 2 provided with a conductive layer in series, the stacking process is: first providing a carrier 1, then placing a plurality of battery cells 2 provided with a conductive layer on the carrier 1 to stack and arrange the cells to form a string 10, and then placing a string fixing member 3 on the string 10 to press and hold the string 10 on the carrier 1, thus forming a string battery cell module.

[0055] From front to back, a battery chip loading station 101, a waiting printing station 102, a battery chip positioning station 103, and a stacking station 104 are sequentially arranged; the battery chip 2 prepared in step S1 is placed in the battery chip loading station 101, and the first manipulator 105 transfers the battery chip 2 from the battery chip loading station 101 to the battery chip positioning station 103 for positioning; the printing system 106 moves from the waiting printing station 103 to the battery chip positioning station 103 to perform step S2, and then resets to the waiting printing station 102; in step S3, the carrier 1 is located at the stacking station 104, and the battery chip 2 with the conductive layer printed on the battery chip positioning station 103 is sent to the carrier 1 by the second manipulator 107 for stacking and arranging to form a string 10. Here, in step S3, the carrier plate 1 is intermittently displaced at the stacking station and gradually moves away from the battery chip positioning station, and the second manipulator is equidistantly displaced from the battery chip positioning station to the carrier plate 1 to place the battery chip 2 and complete the stacking and arranging at the same time.

[0056] Next, please combine Figures 1 to 17 shown.

[0057] A solar cell printing and string stacking device includes a small cell automatic feeding system, a small cell automatic printing system, an automatic string stacking system, a carrier board feeding system and a string fixing part feeding system; wherein:

[0058] The automatic battery chip feeding system is used to deliver the battery chip 2 to the automatic battery chip printing system, the carrier board feeding system is used to provide the carrier board 1 to the automatic string stacking system, the automatic string stacking system is used to place the battery chip 2 with the conductive layer printed on the carrier board 1 to stack and arrange the chips to form a string 10, and the string fixture feeding system is used to place the string fixture 3 on the string 10 to press and position the string 10 on the carrier board 1. The automatic battery chip feeding system includes a first manipulator 105 and a battery chip bin 108. The first manipulator 105 transfers the battery chips 2 stacked on the battery chip bin 108 to the battery chip positioning station 103 for positioning, and then prints after positioning.

[0059] like Figures 8 to 11 As shown, the battery chip automatic printing system has a battery chip automatic positioning system; the battery chip automatic feeding system is used to deliver the battery chip 2 to the battery chip automatic positioning system, and the battery chip automatic printing system moves to the battery chip automatic positioning system to perform printing;

[0060] The battery chip automatic printing system also includes a printing frame 109, a fourth driving unit 110 for controlling the forward and backward displacement of the printing frame 109, a fifth driving unit 111 for controlling the upward and downward displacement of the printing frame 109, a scraper assembly 112, a sixth driving unit 113 for controlling the forward and backward displacement of the scraper assembly 112 relative to the printing frame 109, and a seventh driving unit 114 for controlling the upward and downward displacement of the scraper assembly 112 relative to the printing frame 109.

[0061] The battery chip automatic positioning system has a battery chip positioning station 101, and a fixing block 115, a front slider 116, a left slider 117 and a right slider 118 are respectively arranged around the battery chip positioning station 101; the front slider 116 is connected to a first driving unit for controlling its front and rear displacement, the left slider 117 is connected to a second driving unit for controlling its left and right displacement, and the right slider 118 is connected to a third driving unit for controlling its left and right displacement. The first to third driving units can all use cylinders.

[0062] like Figure 8 , Fig.12 and Fig.17As shown, the automatic stacking system includes a moving platform 119 and a second manipulator 107, and the moving platform 119 can move forward and backward; the plate loading system is used to provide the carrier 1 to the moving platform 119; when stacking the tiles, the moving platform 119 is intermittently displaced from front to back, and the second manipulator 107 moves back and forth between the moving platform 119 and the automatic positioning system for the battery chips at equal distances along the front and back directions; here, the moving platform 119 is provided with a slide rail base 120, and slide rails 121 extending forward and backward are provided on the left and right sides of the slide rail base 120, and a motor 122 is installed on the slide rail base 120, and the motor 122 drives the screw rod 123 extending forward and backward, and the moving platform 119 is adapted to the screw rod 123 through an internal threaded hole, and the bottom of the moving platform 119 is provided with sliders 124 arranged at left and right intervals, and the sliders 124 are adapted to the corresponding left and right side slide rails 121. The moving platform 119 is provided with an eighth driving unit 125 for controlling its lifting action. The movable platform 119 is provided with a plurality of pin holes 126, and pins 127 are detachably provided in the pin holes 126 for positioning the carriers 1 of different sizes. Each time the carrier 1 is replaced, the pins 126 only need to be removed and then installed in the corresponding pin holes 127, and a top screw can be installed on the side of the movable platform 119 to fasten the pins 127.

[0063] like Figure 2 , Fig.13 and Fig.14 As shown, the plate loading system and the string fixing part loading system are respectively located on the left and right sides of the string working table. Specifically: the plate loading system and the string fixing part loading system share a transport drive unit 128, and the transport drive unit 128 controls a common mechanical arm 129 to automatically move, and the common mechanical arm 129 is respectively connected to a plate loading robot 130 and a string fixing part loading robot 131. The plate loading bin 132 and the string fixing part storage bin 133 are respectively arranged on the left and right sides of the mobile platform 119 (also referred to as the string working table), and the plate loading robot 130 moves back and forth between the plate loading bin 132 and the mobile platform 119 under the control of the transport drive unit 128, and the string fixing part loading robot 131 moves back and forth between the string fixing part storage bin 133 and the mobile platform 119 under the control of the transport drive unit 128.

[0064] The transport drive unit 128 includes a left-right displacement drive mechanism 136, which controls the left-right displacement of the common robot arm 129. The left-right displacement drive mechanism 136 can be driven by a motor to drive a belt, and the common robot arm 129 moves left-right along with the belt, or the motor can drive a screw rod, and the common robot arm 129 moves left-right along the screw rod, or other drive control methods can be used to achieve left-right displacement control.

[0065] The common robot arm 129 is provided with a first up-and-down displacement driving mechanism 134, and the plate carrier loading robot 130 is installed on the first up-and-down displacement driving mechanism 134, and the lifting and lowering movement of the plate carrier loading robot 130 is controlled by the first up-and-down displacement driving mechanism 134; the string fixing part loading robot 131 is installed on the first up-and-down displacement driving mechanism 134 through a second up-and-down displacement driving mechanism 135, and the lifting and lowering movement of the string fixing part loading robot 131 is controlled by both the first up-and-down displacement driving mechanism 134 and the second up-and-down displacement driving mechanism 135.

[0066] like Figures 2 to 5 ,as well as Fig.12 and Fig.17 As shown, the rear side of the mobile platform 119 is connected to the string cell module conveying system; the mobile platform 119 moves the carrier plate 1 toward the string cell module conveying system, and then descends to transfer the string cell module to the string cell module conveying system. Here, the string cell module conveying system has conveying rails 137 arranged at intervals on the left and right sides, and a clearance space 138 is reserved between the left and right conveying rails 137. The mobile platform 119 can be selectively moved into the clearance space 138 to allow the string cell module to be conveyed to the left and right conveying rails 137. Here, the battery cell module string conveying system adopts belt conveying, therefore, the left and right conveying tracks 137 also refer to two sets of belts, whose upper ends are conveyed from front to back; the carrier storage bin 132 and the string fixing part storage bin 133 are respectively located on the left and right sides of the conveying track 137 of the battery cell module string conveying system, and are arranged on the left and right sides corresponding to the position of the clearance space 138; the movable platform 119 can be selectively moved backward away from the clearance space 138.

[0067] And, if Figure 6 and Fig.13 As shown, the battery chip bin 108, the carrier storage bin 132, and the string fixing component storage bin 133 are all loaded at the top, and an automatic loading assembly is provided at the bottom of the bin.

[0068] It should be noted that the various drives described in this article can generally be driven by motors or cylinders, and the control of the displacement stroke can be achieved by travel switches, position detection switches, etc.

[0069] Finally, the processing flow of the solar cell printing and string stacking equipment of this embodiment is briefly described as follows:

[0070] 1. Material preparation: The battery chips, carrier plates, and string fixing parts are stacked in the corresponding battery chip bin 108, carrier plate storage bin 132, and string fixing part storage bin 133 respectively;

[0071] 2. Loading and positioning of battery chips: The first manipulator 105 transfers the battery chips from the battery chip bin 108 to the battery chip positioning station 103. After the battery chips are placed, the fixed block 115 pre-positions one side of the battery chips. Then, the front slider 116, the left slider 117 and the right slider 118 automatically move toward the battery chips to position the battery chips from four sides, and the positioning effect is good.

[0072] 3. Printing of small battery pieces: the printing frame 109 moves backward to the top of the small battery piece positioning station 103 and descends, and the scraper assembly 112 descends and moves forward and backward to complete the printing; then the printing frame 109 moves upward and forward to reset to the waiting printing station 102; in this embodiment, the positioning and printing process of small battery pieces can be implemented on the positioning and printing integrated device;

[0073] 4. Stacking strings:

[0074] 4-1. In the waiting state, the movable table 119 is located in the clearance space 138, and the carrier loading robot 130 takes a carrier 1 from the carrier storage bin 132 and places it on the movable table 119. The carrier 1 is horizontally positioned by the pins 127 on the movable table 119;

[0075] 4-2, the carrier plate 1 moves forward together with the moving platform 119 toward the battery chip positioning station 103 to the initial position of the stacking string;

[0076] 4-3, the second manipulator 107 transfers the first battery sheet 2 with the conductive layer printed on it from the battery sheet positioning station 103 to the carrier 1; (the aforementioned steps 2, 3, 4-1, and 4-2 will be performed cyclically), then, the carrier 1 moves backward with the moving platform 119 away from the battery sheet positioning station 103 by a set distance (the set distance is less than the width of the battery sheet 2), and the second manipulator 107 transfers the second battery sheet 2 with the conductive layer printed on it from the battery sheet positioning station 103 to the carrier 1. Since the carrier 1 moves away from each other in an equidistant displacement, the second manipulator 107 is also an equidistant displacement for conveying. Starting from the second battery sheet 2, the second manipulator 107 puts down the battery sheet 2 to form a shingled arrangement effect at the same time. (It can also be understood that the stacking station 104 is fixed and unchanged, and the second manipulator 107 only needs to send the battery sheet 2 to a fixed position, and the displacement change of the carrier 1 causes the placement position of the battery sheet 2 on the carrier 1 to change). This cycle is repeated until the carrier plate 1 and the moving platform 119 are again located in the clearance space 138, and the shingle arrangement is completed to form a string 10;

[0077] 4-4. The string fixing part loading manipulator 131 takes a group of string fixing parts from the string fixing part storage bin 133 and places them on the string 10 to press and position the string 10 on the carrier 1, thus forming a string battery cell module. The string fixing part 3 can be a long glass sheet, etc., mainly using the self-weight of the string fixing part 3 to press on the string 10, so that the string 10 does not move loosely on the carrier 1, and at the same time, the string battery cell module is not easy to deviate on the conveying track, and the conveying is smooth.

[0078] In steps 4-3 and 4-4, usually, the carrier 1 will not contact the conveying track 137 of the conveying system of the string battery cell module, and the eighth driving unit 125 can be used to control the moving platform 119 to rise. Here, the eighth driving unit 125 controls the slide rail base 120, the moving platform 119, the motor 122, etc. to rise as a whole to prevent the carrier 1 from being affected by the conveying track 137; after completing step 4-4, the eighth driving unit 125 controls the slide rail base 120, the moving platform 119, the motor 122, etc. to descend as a whole. When the carrier 1 falls on the conveying track 137, it will still descend a short distance so that the pins can be disengaged from the carrier 1 downward to release the limit on the carrier 1. At this time, the carrier 1 (also referring to the entire string battery cell module) moves backward with the conveying track 137.

[0079] The subsequent string battery cell module conveying system will convey the entire string battery cell module to the high-temperature furnace 200 to connect and solidify the conductive layer.

[0080] In summary, the design focus of the present invention is:

[0081] First, a plurality of small battery sheets provided with a conductive layer are placed on a carrier to stack and arrange the sheets to form a string, and then a string fixing piece is placed on the string to press and hold the string on the carrier. In this way, a string battery sheet module is formed, which will not loosen or deviate when being transported into the furnace, thereby improving the quality of the solidified connection of the solar cell sheets after stacking. The implementation method is simple and ingenious, feasible and reliable, and has strong practicality for mass production.

[0082] 2. For the entire solar cell printing and string stacking process, a number of small battery pieces are prepared first, and then a conductive layer is set on one end of the surface of the small battery piece, and then the "cutting board + string assembly + string fixing piece" method is used to stack and position the strings. This is especially suitable for the production of solar cells with lower power. The process is simple, and the equipment for implementing the process can be easily implemented, which reduces production costs. It is especially suitable for small and medium-sized enterprises to process and produce solar cells and enhance market competitiveness. At the same time, it is conducive to reducing the cost and market sales price of solar cell products, better popularizing and promoting solar cell products, and also benefiting the general public.

[0083] 3. The solar cell printing and string stacking equipment of the present invention has a reasonable design for the functional parts such as the printing system, automatic string stacking system, carrier board loading system and string fixing part loading system, so that the structure of the whole equipment is compact and small in size, the equipment cost is reduced, the action stroke between different workstations is shortened, and the production and processing efficiency is improved.

[0084] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A solar cell printing and string stacking device, characterized by: It includes automatic battery chip feeding system, automatic battery chip printing system, automatic string stacking system, board loading system and string fixing parts loading system; among which: The battery chip automatic feeding system is used to feed the battery chip to the battery chip automatic printing system, the carrier board feeding system is used to provide the carrier board to the automatic string stacking system, the automatic string stacking system is used to put the battery chip with the conductive layer printed on the carrier board and stack the chips to form a string, and the string fixing part feeding system is used to put the string fixing part on the string to press and hold the string on the carrier board; The battery chip automatic printing system has a battery chip automatic positioning system; the battery chip automatic feeding system is used to send the battery chip to the battery chip automatic positioning system, and the battery chip automatic printing system moves to the battery chip automatic positioning system to perform printing; The automatic stacking system includes a moving platform and a second manipulator; the plate loading system is used to provide the plate loading system to the moving platform; when stacking the tiles, the moving platform moves intermittently from front to back, and the second manipulator moves back and forth between the moving platform and the automatic positioning system for the small battery sheets at equal distances in the front-to-back direction; The battery chip automatic positioning system has a battery chip positioning station, and a fixed block, a front slider, a left slider and a right slider are respectively arranged around the battery chip positioning station; the front slider is connected to a first driving unit that controls its front and rear displacement, the left slider is connected to a second driving unit that controls its left and right displacement, and the right slider is connected to a third driving unit that controls its left and right displacement; The battery chip automatic printing system also includes a printing frame, a fourth driving unit for controlling the front-rear displacement of the printing frame, a fifth driving unit for controlling the up-and-down displacement of the printing frame, a scraper assembly, a sixth driving unit for controlling the front-and-back displacement of the scraper assembly relative to the printing frame, and a seventh driving unit for controlling the up-and-down displacement of the scraper assembly relative to the printing frame; The plate carrier feeding system and the string fixing part feeding system share a transport drive unit, and the transport drive unit controls a common mechanical arm to automatically move, and the common mechanical arm is respectively connected to a plate carrier feeding manipulator and a string fixing part feeding manipulator. In addition, the rear side of the mobile platform is connected to a string battery cell module conveying system; the mobile platform is provided with an eighth driving unit for controlling its lifting action, and the mobile platform moves the carrier toward the string battery cell module conveying system, and then descends to transfer the string battery cell module to the string battery cell module conveying system.

2. A solar cell string stacking process, characterized in that: The solar cell printing and string stacking device is based on claim 1 and comprises the following steps: First, a carrier is provided, and then a plurality of battery chips provided with a conductive layer are sequentially placed on the carrier in a stacking manner to form a string, and then a string fixing member is placed on the string to press and hold the string in place on the carrier.

3. A solar cell printing and string stacking process, characterized in that: The solar cell printing and string stacking device is based on claim 1 and comprises the following steps: Step S1, preparing a number of battery chips; Step S2, providing an electrical layer on one end of the surface of the battery chip; Step S3, stacking a number of small battery sheets provided with a conductive layer in series. The string stacking process is: first provide a carrier board, then place a number of small battery sheets provided with a conductive layer on the carrier board to stack and arrange the sheets to form a string, and then place a string fixing piece on the string to press and hold the string in place on the carrier board.

4. The solar cell printing and string stacking process according to claim 3, characterized in that: From front to back, there are battery chip loading station, printing waiting station, battery chip positioning station, and stacking station; The battery chips prepared in step S1 are placed at the battery chip loading station, and the first robot moves the battery chips from the battery chip loading station to the battery chip positioning station for positioning; the printing system moves from the waiting printing station to the battery chip positioning station for step S2, and then resets to the waiting printing station; in step S3, the carrier is located at the stacking station, and the battery chips with the conductive layer printed on the battery chip positioning station are moved by the second robot to the carrier for stacking and arranging to form a string.

5. A solar cell printing and string stacking process according to claim 4, characterized in that: In step S3, the carrier plate is intermittently displaced at the stacking station and gradually moves away from the battery chip positioning station, and the second manipulator is equidistantly displaced from the battery chip positioning station to the carrier plate to achieve stacking and tiling while placing the battery chips.

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