An IBC photovoltaic cell string manufacturing device and photovoltaic module production equipment

Abstract

The application discloses an IBC photovoltaic cell string manufacturing device and photovoltaic module production equipment, which is used for preparing a photovoltaic module based on IBC non-main grid cell pieces and comprises multiple items in a glue applying device, a glue point position positioning device, a wire distributing device, a string forming device, a string pre-solidification device, a welding strip position positioning device, a coating position positioning device and an insulation layer coating device. The application adopts the method of firstly applying glue points and then pre-fixing welding strips on the back of the cell pieces by the glue points. The welding strip and the cell piece in the formed photovoltaic cell string are not completely metallized connected, which is a brand-new process equipment. The welding process of the prepared photovoltaic cell string can realize low-temperature welding material and process, and overcomes the disadvantages caused by high-temperature welding in the prior art. The main grid line, PAD point or solder pad on the cell piece is not needed to be arranged again, the production cost of the photovoltaic module is reduced, the IBC non-main grid cell piece can enter the mass production sequence of the photovoltaic cell module, and the technical development of the photovoltaic cell industry is greatly promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic cells, in particular to an IBC photovoltaic cell string manufacturing device and a photovoltaic module production equipment. BACKGROUND

[0002] The photovoltaic industry develops rapidly under the energy crisis, and the key to further popularize photovoltaic application is to improve the photoelectric conversion efficiency of solar cell and reduce the production cost of the cell. The silver paste accounts for a large part of the production cost, and reducing the amount of silver paste used to achieve cost reduction of photovoltaic modules has become a key research direction. The existing photovoltaic cell is provided with a plurality of main grid lines for current confluence, and the setting of the main grid line consumes a large amount of silver paste, so a new concept of main grid-free cell appears, which no longer sets the main grid line, thereby reducing the use cost of silver paste. However, the existing IBC main grid-free cell removes the main grid line on the back of the solar cell, but is limited by the existing production process and equipment. The welding strip and the main grid-free cell need to be fixed through the PAD point or the solder pad first, and then high-temperature welding is performed, so that the welding strip connects all the fine grid lines. The current equipment for preparing IBC photovoltaic cell string and photovoltaic module first fixes the welding strip and the PAD point on the cell through high-temperature welding of the PAD point (or PAD point) on the back of the IBC cell, or fixes the welding strip and the PAD point on the IBC cell through high-temperature welding of the conductive glue. In order to ensure the reliability of welding, the size of the PAD point or the solder pad is large, which consumes silver paste, and there is still a large space for improvement. The current equipment cannot realize the string preparation process of the main grid-free cell without PAD point or solder pad. SUMMARY

[0003] To solve the above technical problems, the present application discloses an IBC photovoltaic cell string manufacturing device and a photovoltaic module production equipment, which sets a glue applying device for applying glue to the cell or the welding strip, and sets a wire arranging device to realize the pre-fixing between the welding strip and the IBC main grid-free cell. The present application does not need to set PAD point or solder pad on the cell, does not need to pre-fix the PAD point or solder pad, and realizes the purpose of energy saving and cost reduction.

[0004] Specifically, an IBC photovoltaic cell string manufacturing device is used for preparing a photovoltaic module based on IBC main grid-free cell, and the IBC main grid-free cell is alternately and discontinuously provided with positive fine grid lines and negative fine grid lines, and the IBC photovoltaic cell string manufacturing device comprises:

[0005] A glue applying device is used for coating glue points on the back of the IBC main grid-free cell, and the glue points are arranged at intervals along the arrangement path of the welding strip, and at least two glue points are arranged on the back of each IBC main grid-free cell corresponding to the arrangement path of each welding strip;

[0006] A glue point position positioning device instructs the glue applying device to apply glue points on the IBC gridless cell at the position between the positive and negative fine grid lines at the gap where the positive and negative fine grid lines are discontinuous or at the position between the positive and negative fine grid lines corresponding to the gap;

[0007] A wire arranging device pre-fixes a plurality of solder strips on the back of the IBC gridless cell, and each solder strip is pre-fixed on the IBC gridless cell through at least two glue points;

[0008] A string arranging device sequentially places the IBC gridless cells according to the requirements of the IBC photovoltaic cell string forming process;

[0009] The fine grid lines on the IBC gridless cell are not completely connected or not connected at all with the solder strips, and the solder strips are arranged non-parallel to the fine grid lines;

[0010] A string pre-fixing device is used for pre-fixing the IBC gridless cell string after the IBC string forming process;

[0011] Or, comprising:

[0012] A glue applying device is used for applying glue points on the solder strips at intervals, and at least two glue points correspond to each IBC gridless cell;

[0013] A wire arranging device pre-fixes a plurality of solder strips on the back of the IBC gridless cell, and each solder strip is pre-fixed on the IBC gridless cell through at least two glue points;

[0014] A solder strip position positioning device instructs the wire arranging device to position the glue points on the solder strips to be pre-fixed on the IBC gridless cell at the position between the positive and negative fine grid lines at the gap where the positive and negative fine grid lines are discontinuous or at the position between the positive and negative fine grid lines corresponding to the gap;

[0015] A string arranging device sequentially places the IBC gridless cells according to the requirements of the IBC photovoltaic cell string forming process;

[0016] The fine grid lines on the IBC gridless cell are not completely connected or not connected at all with the solder strips, and the solder strips are arranged non-parallel to the fine grid lines;

[0017] A string pre-fixing device is used for pre-fixing the IBC gridless cell string after the IBC string forming process;

[0018] Or, corresponding to the IBC gridless cell with the positive and negative fine grid lines arranged continuously without discontinuity, comprising:

[0019] A glue applying device is used to apply glue points on the back of IBC busbar-free cell, the glue points are arranged along the welding strip arrangement path, at least two glue points are arranged on the back of each IBC busbar-free cell corresponding to the arrangement path of each welding strip;

[0020] An insulation layer coating device 1 is used to coat the insulation layer on the positive and negative fine grid lines of IBC busbar-free cell along the welding strip arrangement path;

[0021] A coating position positioning device is used to instruct the insulation layer coating device 1 to coat the insulation layer on the positive and negative fine grid lines of IBC busbar-free cell along the welding strip arrangement path, the insulation layer is coated on the negative fine grid line corresponding to the positive welding strip arrangement path, and the insulation layer is coated on the positive fine grid line corresponding to the negative welding strip arrangement path; the coating width of the insulation layer is greater than the width of the welding strip, and the welding strip is pre-fixed in the insulation layer area;

[0022] A wire arranging device is used to pre-fix a plurality of welding strips on the back of IBC busbar-free cell, and each welding strip is pre-fixed on the IBC busbar-free cell through at least two glue points;

[0023] A string forming device is used to sequentially place IBC busbar-free cells according to the requirements of IBC photovoltaic cell string forming process;

[0024] The fine grid lines on the IBC busbar-free cell are not completely connected or not connected at all with the welding strip, and the welding strip is arranged non-parallelly with the fine grid lines;

[0025] A string pre-solidification device is used to pre-solidify the IBC busbar-free cell string after completing the IBC string forming process;

[0026] Or, comprising:

[0027] A glue applying device is used to apply glue points on the welding strip, and at least two glue points are applied on each IBC busbar-free cell;

[0028] An insulation layer coating device is used to coat the insulation layer on the positive and negative fine grid lines of IBC busbar-free cell along the welding strip arrangement path;

[0029] A coating position positioning device is used to instruct the insulation layer coating device to coat the insulation layer on the positive and negative fine grid lines of IBC busbar-free cell along the welding strip arrangement path, the insulation layer is coated on the negative fine grid line corresponding to the positive welding strip arrangement path, and the insulation layer is coated on the positive fine grid line corresponding to the negative welding strip arrangement path; the coating width of the insulation layer is greater than the width of the welding strip;

[0030] A wire distribution device is used to pre-fix a plurality of solder strips on the back of the IBC busbar-free cell, and each solder strip is pre-fixed on the IBC busbar-free cell through at least two adhesive points;

[0031] A solder strip position positioning device is used to instruct the wire distribution device to position the adhesive points on the solder strip to be pre-fixed between the positive and negative fine grid lines of the IBC busbar-free cell, and make the solder strip pre-fixed in the insulating layer region;

[0032] A stringing device is used to place the IBC busbar-free cells in sequence according to the stringing process requirements of the IBC photovoltaic cell;

[0033] The IBC busbar-free cell is not completely connected or not connected at all between the fine grid lines and the solder strip, and the solder strip is arranged non-parallel to the fine grid lines;

[0034] A string pre-solidification device is used to pre-solidify the IBC busbar-free cell string after the IBC stringing process is completed.

[0035] The IBC busbar-free cell stringing preparation device provided by the application is characterized in that: adhesive points are first applied on the back of the IBC busbar-free cell, and at least two adhesive points are applied along the path of each solder strip arranged on the back; then the IBC busbar-free cell is arranged in a string direction with a gap upward; then the solder strip is pre-fixed on the back of the IBC busbar-free cell by using the adhesive points, and the negative solder strip of the previous IBC busbar-free cell is connected to the positive solder strip of the next IBC busbar-free cell to form a series-connected IBC busbar-free cell string. The IBC busbar-free cell stringing preparation device provided by the application is characterized in that: adhesive points are first applied, and then the solder strip is pre-fixed on the back of the IBC busbar-free cell by using the adhesive points. The solder strip of the series-connected photovoltaic cell string is not completely metallized connected to the IBC busbar-free cell, which is a new process equipment. The soldering process of the prepared photovoltaic cell string can use low-temperature soldering materials and processes, overcoming the disadvantages brought by high-temperature soldering in the prior art. The main grid line, PAD point or solder pad on the cell is not needed, which further reduces the production cost of the photovoltaic module, enables the IBC busbar-free cell to enter the mass production sequence of the photovoltaic cell module, and greatly promotes the technical development of the photovoltaic cell industry.

[0036] The existing IBC no master grid cell mainly has the positive electrode fine grid line and the negative electrode fine grid line arranged alternately and discontinuously, the positive electrode welding strip is welded with all the positive electrode fine grid lines at the gap position corresponding to the discontinuous part of the negative electrode fine grid line, and the positive electrode welding strip does not contact the negative electrode fine grid line, so that the short circuit caused by the connection of the positive electrode welding strip and the negative electrode fine grid line is avoided; similarly, the negative electrode welding strip is welded with all the negative electrode fine grid lines at the gap position corresponding to the discontinuous part of the positive electrode fine grid line, and the negative electrode welding strip does not contact the positive electrode fine grid line, so that the short circuit caused by the connection of the negative electrode welding strip and the positive electrode fine grid line is avoided. According to the characteristics of the existing IBC no master grid cell, a special glue point position positioning device is arranged to ensure that the glue point is applied to the position between the positive electrode fine grid line and the negative electrode fine grid line at the gap of the discontinuous part of the positive electrode fine grid line and the negative electrode fine grid line or the corresponding gap. In this way, the positive electrode welding strip and the negative electrode welding strip can avoid contact with the negative electrode fine grid line and the positive electrode fine grid line, respectively, and short circuit. For the special embodiment of applying the glue point on the welding strip, a welding strip position positioning device is added to ensure that the wire laying device accurately pre-fixes the positive electrode welding strip and the negative electrode welding strip to the correct position, and the glue point on the welding strip is also exactly at the position between the positive electrode fine grid line and the negative electrode fine grid line at the gap of the discontinuous part of the positive electrode fine grid line and the negative electrode fine grid line or the corresponding gap. Thus, the purpose of ensuring that the positive electrode welding strip and the negative electrode welding strip can avoid contact with the negative electrode fine grid line and the positive electrode fine grid line, respectively, and short circuit is achieved.

[0037] The present application also provides a new possibility, that is, the IBC no master grid cell can be arranged with the positive electrode fine grid line and the negative electrode fine grid line arranged continuously and discontinuously, so that the processing technology of the IBC no master grid cell is simpler, and the number and position of the subsequent welding strip are no longer limited by the IBC no master grid cell. In order to achieve this goal, the present application creatively arranges an insulating layer coating device and a coating position positioning device. The insulating layer coating device is used to coat the insulating layer on the positive electrode fine grid line and the negative electrode fine grid line along the welding strip arrangement path; the coating position positioning device instructs the insulating layer coating device to coat the insulating layer on the positive electrode fine grid line and the negative electrode fine grid line along the welding strip arrangement path, and the insulating layer is coated on the negative electrode fine grid line corresponding to the positive electrode welding strip arrangement path, and the insulating layer is coated on the positive electrode fine grid line corresponding to the negative electrode welding strip arrangement path; the coating width of the insulating layer is greater than the width of the welding strip, and the welding strip is located in the insulating layer region after being pre-fixed; thus, the purpose of ensuring that the positive electrode welding strip and the negative electrode welding strip can avoid contact with the negative electrode fine grid line and the positive electrode fine grid line, respectively, and short circuit is achieved, and the positive electrode fine grid line and the negative electrode fine grid line no longer need to be arranged alternately and discontinuously. For the special case of applying the glue point on the welding strip, the principle is similar, and details are not repeated.

[0038] For interval glue application on the welding strip, the viscosity of the glue is adjusted to form a stable glue point on the welding strip.

[0039] Further, the position of the glue point coated by the glue applying device is irrelevant to the position of the PAD point or the pad on the IBC cell without busbar, or the IBC cell without PAD point or pad used for preparing the IBC photovoltaic cell string. In this way, the PAD point or the pad on the cell is not needed to be prepared, the process and the production cost are saved, and the arrangement position and the number of the solder strip can be flexibly set, and the versatility of the production equipment is greatly improved.

[0040] Further, the IBC photovoltaic cell string manufacturing device is sequentially provided with the glue point position positioning device, the glue applying device, the stringing device, the wire arranging device and the string pre-solidification device according to the process.

[0041] Alternatively, the IBC photovoltaic cell string manufacturing device is sequentially provided with the stringing device, the glue point position positioning device, the glue applying device, the wire arranging device and the string pre-solidification device according to the process.

[0042] Further, the IBC photovoltaic cell string manufacturing device is sequentially provided with the glue applying device, the stringing device, the solder strip position positioning device, the wire arranging device and the string pre-solidification device according to the process.

[0043] Further, the IBC photovoltaic cell string manufacturing device is sequentially provided with the glue applying device, the coating position positioning device, the insulation layer coating device 1, the stringing device, the wire arranging device and the string pre-solidification device according to the process.

[0044] Alternatively, the IBC photovoltaic cell string manufacturing device is sequentially provided with the stringing device, the glue applying device, the coating position positioning device, the insulation layer coating device 1, the wire arranging device and the string pre-solidification device according to the process.

[0045] Further, the IBC photovoltaic cell string manufacturing device is sequentially provided with the glue applying device, the coating position positioning device, the insulation layer coating device, the stringing device, the solder strip position positioning device, the wire arranging device and the string pre-solidification device according to the process.

[0046] Further, the IBC photovoltaic cell string manufacturing device is sequentially provided with the glue applying device, the coating position positioning device, the insulation layer coating device, the stringing device, the solder strip position positioning device, the wire arranging device and the string pre-solidification device according to the process.

[0047] Further, the IBC photovoltaic cell string manufacturing device is sequentially provided with the glue applying device, the coating position positioning device, the insulation layer coating device, the stringing device, the solder strip position positioning device, the wire arranging device and the string pre-solidification device according to the process.

[0048] Further, the material of the glue point is insulating glue.

[0049] Further, the IBC photovoltaic cell string manufacturing device is used for manufacturing the photovoltaic cell string, and each IBC cell without busbar in the photovoltaic cell string is not electrically connected or not completely electrically connected.

[0050] Further, the welding strip buffering structure pressing device is further included, which is used for pressing a fold line or a bending structure in the middle of the welding strip.

[0051] The application further provides a photovoltaic cell module production equipment, which comprises the IBC photovoltaic cell string manufacturing device and a laminating and curing device.

[0052] Further, the insulating glue is used, and the position of the glue point can be set arbitrarily according to the cell pattern, preferably, the position of the glue point is set near the two end edges of the IBC cell without busbar, so that the fine grid lines can be avoided, the good connection between the welding strip and the fine grid lines after the welding strip is welded in the later stage is realized, and the problems caused by the conductive adhesive, such as more strict requirements on the size of the glue point and the inconsistency of the electrical properties of the glue point position and other positions after laminating and low-temperature welding, are avoided. Under the condition of realizing the same electrical properties, the cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced.

[0054] Figure 1 is a schematic view of an IBC photovoltaic cell with positive and negative fine grid lines arranged alternately and discontinuously;

[0055] Figure 2 is a schematic view of an IBC photovoltaic cell with positive and negative fine grid lines arranged continuously and discontinuously;

[0056] Figure 3 is a schematic view of an IBC photovoltaic cell with positive and negative fine grid lines arranged continuously and discontinuously and coated with an insulating layer;

[0057] Figure 4 is a schematic view of an IBC photovoltaic cell string with positive and negative fine grid lines arranged continuously and discontinuously;

[0058] Figure 5 is a schematic view of an IBC photovoltaic cell string manufacturing device with positive and negative fine grid lines arranged alternately and discontinuously;

[0059] Figure 6 is a schematic view of an IBC photovoltaic cell string manufacturing device with positive and negative fine grid lines arranged continuously and discontinuously;

[0060] Figure 7 is a schematic view of the solder strip with the buffer structure.

[0061] The reference signs involved in the drawings are as follows:

[0062] gluing device 11; coating position positioning device 113; insulation layer coating device 112; stringing device 12; wire laying device 14; solder strip 15; positive electrode solder strip 151; negative electrode solder strip 152; pre-solidification device 20; IBC no main grid cell sheet 16; positive electrode fine grid line 161; negative electrode fine grid line 162, positive electrode coating part 163; negative electrode coating part 164; gap 165; glue point 17; buffer structure 153. DETAILED DESCRIPTION

[0063] The application will be further described in detail below in combination with the drawings.

[0064] The IBC no main grid cell sheet described in the present application mainly refers to an IBC no main grid cell sheet without grid lines on the front surface, and the back surface is alternately provided with positive electrode fine grid lines and negative electrode fine grid lines, and the fine grid lines are fine grid lines with the same size specifications; in particular, it refers to an IBC no main grid cell sheet without the situation that all the fine grid lines have locally increased sizes, and these IBC no main grid cell sheets can be further cut and used to prepare IBC photovoltaic cell strings.

[0065] In order to solve the foregoing technical problems existing in the production of photovoltaic cell strings in the prior art, in some embodiments of the present application, corresponding to the IBC no main grid cell sheet 16 with the positive electrode fine grid lines 161 and the negative electrode fine grid lines 162 being alternately and discontinuously arranged, the IBC photovoltaic cell string manufacturing device is sequentially provided with a glue point position positioning device, a gluing device 11, a stringing device 12, a wire laying device 14, and a string pre-solidification device 20 according to the process.

[0066] Or, corresponding to the IBC no main grid cell sheet 16 with the positive electrode fine grid lines 161 and the negative electrode fine grid lines 162 being alternately and discontinuously arranged, the IBC photovoltaic cell string manufacturing device is sequentially provided with a gluing device 11, a stringing device 12, a solder strip position positioning device, a wire laying device 14, and a string pre-solidification device 20 according to the process.

[0067] Or, corresponding to the IBC no main grid cell sheet 16 with the positive electrode fine grid lines 161 and the negative electrode fine grid lines 162 being continuously and discontinuously arranged, the IBC photovoltaic cell string manufacturing device is sequentially provided with a gluing device 11, a coating position positioning device 113, an insulation layer coating device 112, a stringing device 12, a wire laying device 14, and a string pre-solidification device 20 according to the process.

[0068] Or, corresponding to the positive fine grid line 161, the negative fine grid line 162 is the IBC gridless battery piece 16 which is continuously and uninterruptedly arranged, and the IBC photovoltaic cell string manufacturing device sequentially arranges the following devices according to the process: the glue applying device 11, the coating position positioning device 113, the insulating layer coating device 112, the stringing device 12, the welding strip position positioning device, the wire arranging device 14, and the string pre-solidification device 20.

[0069] Or, it also includes a piece spacing control device for sending instructions of the gap width between adjacent IBC gridless battery pieces 16 to the stringing device 12, and controlling the stringing device 12 to arrange the gap width between adjacent IBC gridless battery pieces 16.

[0070] In combination with the drawings, in some embodiments, an IBC photovoltaic cell string manufacturing device is used to prepare a photovoltaic module based on IBC gridless battery pieces, and the positive fine grid line 161 and the negative fine grid line 162 of the IBC gridless battery piece 16 are arranged in an alternating and intermittent manner, as shown in Figure 1 As shown in the figure, the positive fine grid line 161 and the negative fine grid line 162 of the IBC gridless battery piece 16 are arranged in an alternating and intermittent manner, and have a gap 165. As shown in the figure, Figure 5 The IBC photovoltaic cell string manufacturing device includes:

[0071] The glue applying device 11 is used to coat glue points 17 on the back of the IBC gridless battery piece 16, and the glue points 17 are arranged along the welding strip 15 arrangement path and are arranged at intervals, and at least two glue points 17 are arranged on the back of each IBC gridless battery piece 16 corresponding to the arrangement path of each welding strip 15;

[0072] The glue point position positioning device 114 instructs the glue applying device to apply the glue points at the positions between the positive fine grid line 161 and the negative fine grid line 162 of the IBC gridless battery piece 16 at the intermittent gap 165 or the positive fine grid line 161 and the negative fine grid line 162 corresponding to the gap 165; as shown in the figure. Figure 1

[0073] The stringing device 12 sequentially places the IBC gridless battery pieces 16 according to the IBC photovoltaic cell string stringing process requirements; the IBC photovoltaic cell string stringing process requirements have gaps between the battery pieces to prevent the positive fine grid line and the negative fine grid line between the battery pieces from short-circuiting. The intermittent gaps of the positive fine grid line 161 and the negative fine grid line 162 of adjacent IBC photovoltaic battery pieces are staggered, which facilitates the connection of the negative welding strip 152 on the previous IBC gridless battery piece 16 and the positive welding strip on the next IBC gridless battery piece 16. Generally, a welding strip 15 is used to connect the negative fine grid line 162 of the previous battery piece and the positive fine grid line 161 of the next battery piece, thereby connecting the adjacent two IBC gridless battery pieces in series.​

[0074] The wire-laying device 14 pre-fixes multiple solder ribbons 15 to the back of the IBC gridless cell 16. Each solder ribbon 15 is pre-fixed to the IBC gridless cell 16 via at least two adhesive dots 17. As mentioned earlier, the positions of the positive electrode solder ribbons 151 and negative electrode solder ribbons 152 on adjacent IBC gridless cells 16 are staggered, meaning that the same solder ribbon 15 includes the negative electrode solder ribbon 152 on the preceding cell and the positive electrode solder ribbon 151 on the following cell. The positive electrode solder ribbons 151 and negative electrode solder ribbons 152 on the same IBC gridless cell 16 are connected to the negative electrode solder ribbon 152 on the preceding IBC gridless cell 16 and the positive electrode solder ribbon 151 on the following IBC gridless cell 16, respectively, thereby connecting the required number of IBC gridless cells 16 in series. After the final battery string undergoes a lamination and welding process, an electrical series structure is achieved.

[0075] The fine grid lines on the IBC gridless solar cell are not fully connected to or not connected at all with the solder ribbon 15, and the solder ribbon and the fine grid lines are not parallel.

[0076] The string pre-curing device 20 is used to pre-cur the entire IBC gridless battery string after the IBC stringing process has been completed.

[0077] The IBC grid-less solar cell 16 is transferred by a conveying or transfer device to the dispensing station of the adhesive applicator 11. The adhesive dot positioning device 114 first scans the IBC grid-less solar cell 16 to determine the positions of all gaps 165, and then determines the positions of all adhesive dots 17. Generally, the adhesive dots 17 are set near the two long sides of the IBC grid-less solar cell 16. Figure 1 As shown. These position parameters are sent to the adhesive applicator 11, which then dispenses adhesive according to the position parameters. To improve efficiency, the adhesive dot positioning device 114 and the adhesive applicator 11 can be located at different stations, so that the adhesive dot position determination is completed simultaneously with the dispensing. The IBC gridless solar cells 16, after the dispensing operation is completed, are arranged in series by the stringing device 12 according to the requirements of the IBC solar cell stringing process. The dimensions of each solar cell, the number of fine grid lines and solder ribbons, and the spacing between adjacent solar cells in all the accompanying drawings are for illustrative purposes only and do not represent the actual parameters of the product. The wire laying device 14 arranges the positive electrode solder ribbon 151 and the negative electrode solder ribbon 152 according to the position of the adhesive dots, pre-fixes the solder ribbons 15, and connects the solar cells in series. Finally, the pre-curing is completed by the string pre-curing device 20.

[0078] Alternatively, in some other embodiments, it includes:

[0079] a glue applying device 11 for applying glue points 17 to the IBC busbar-free cell sheet 16 at intervals, at least two glue points 17 corresponding to each IBC busbar-free cell sheet 16;

[0080] a wire arranging device 14 for pre-fixing a plurality of solder strips 15 on the back of the IBC busbar-free cell sheet 16, each solder strip 15 being pre-fixed on the IBC busbar-free cell sheet 16 by at least two glue points 17;

[0081] a solder strip position positioning device for instructing the wire arranging device 14 to position the glue points on the solder strips 15 to be pre-fixed at the positions between the positive and negative fine grid lines 161, 162 at the gaps 165 or the positive and negative fine grid lines 161, 162 corresponding to the gaps 165;

[0082] a string forming device 12 for placing the IBC busbar-free cell sheets 16 in sequence according to the requirements of the IBC photovoltaic cell string forming process;

[0083] the fine grid lines on the IBC busbar-free cell sheet and the solder strips 15 are not completely connected or not connected at all, and the solder strips and the fine grid lines are arranged non-parallelly;

[0084] a string pre-curing device 20 for pre-curing the IBC busbar-free cell string as a whole after the IBC string forming process is completed.

[0085] In the embodiment, the glue point position positioning device 114 is omitted, and the glue applying device 11 is used to apply the glue points 17 on the solder strips 15, and the glue point position positioning device is used to position the positions of the glue points on the cell sheet. The positions of the glue points 17 are substantially consistent with the positions of the glue applied on the cell sheet.

[0086] or, for the IBC busbar-free cell sheet 16 with the positive and negative fine grid lines 161, 162 arranged continuously without gaps, as shown in FIG. 1B, in some embodiments, as shown in FIG. 1C, the IBC photovoltaic cell string forming device includes: Figure 2 Figure 3 , Figure 4 , Figure 6 The IBC photovoltaic cell string forming device includes:

[0087] a glue applying device 11 for applying glue points 17 to the back of the IBC busbar-free cell sheet 16, the glue points 17 being arranged at intervals along the arrangement path of the solder strips 15, at least two glue points 17 corresponding to the arrangement path of each solder strip 15 on the back of each IBC busbar-free cell sheet 16; and Figure 3 the positions of the glue points 17 are shown in FIG. 1A. Figure 4 the arrangement direction of the solder strips is shown.

[0088] ​An insulation layer coating device 112 is configured to coat the insulation layer on the positive and negative fine grid lines 161, 162 of the IBC cell 16 along the arrangement path of the solder ribbon 15;

[0089] A coating position positioning device 113 is configured to instruct the insulation layer coating device 112 to coat the insulation layer on the positive and negative fine grid lines 161, 162 of the IBC cell 16 along the arrangement path of the solder ribbon 15, i.e. the insulation layer is coated on the negative fine grid line 162 along the arrangement path of the positive solder ribbon 151, and the insulation layer is coated on the positive fine grid line 161 along the arrangement path of the negative solder ribbon 152; the coating width of the insulation layer is greater than the width of the solder ribbon 15, and the solder ribbon is arranged in the insulation layer region after being pre-fixed;

[0090] A wire arrangement device 14 is configured to pre-fix a plurality of solder ribbons 15 on the back of the IBC cell 16, and each solder ribbon 15 is pre-fixed on the IBC cell 16 by at least two adhesive points 17; the solder ribbons 15 on the IBC cell string are divided into positive solder ribbons 151 connected to the positive fine grid line 161 and negative solder ribbons 152 connected to the negative fine grid line 162, but in fact, as mentioned above, the same solder ribbon 15 includes the negative solder ribbon 152 on the previous cell and the positive solder ribbon 151 on the next cell. The positive and negative solder ribbons 151, 152 on the same IBC cell 16 are connected to the negative solder ribbon 152 on the previous IBC cell 16 and the positive solder ribbon 151 on the next IBC cell 16, respectively, so as to connect a plurality of IBC cells 16 in series. After the lamination and welding process, the final cell string realizes the electrical series connection structure.

[0091] A string forming device 12 is configured to sequentially place the IBC cell 16 according to the IBC cell string forming process;

[0092] The fine grid lines on the IBC cell are not completely connected or not connected at all with the solder ribbons 15, and the solder ribbons are arranged non-parallel to the fine grid lines;

[0093] A string pre-fixing device 20 is configured to pre-fix the IBC cell string after the IBC string forming process.

[0094] IBC no master grid cell 16 original piece by conveying device or transfer device to the work station of the glue applying device 11, according to the arrangement of the number and position of the solder strip 15 between the fine grid line glue point 17, each cell on the corresponding each solder strip at least two glue points 17, generally two glue points. Then the coating position positioning device 113 according to the corresponding setting path of each solder strip, and the polarity of the solder strip 15, to determine the position of the coating area on each fine grid line. If it is a positive solder strip 151, the negative fine grid line under the path is coated with a small section of insulating layer, if it is a negative solder strip 152, the positive fine grid line under the path is coated with a small section of insulating layer, such as Figure 3 As shown in the figure, the coating area on the positive fine grid line 161 is the positive coating part 163, and the coating area on the negative fine grid line 162 is the negative coating part 164. The width of these coating areas is greater than the width of the solder strip, and the position is set to cover the solder strip, so as to avoid short circuit caused by the contact between the solder strip and the fine grid line where the coating area is located. In fact, the positive coating part 163 and the negative coating part 164 are equivalent to the gap 165 on the traditional IBC no master grid cell. After determining the positions of all the positive coating parts 163 and the negative coating parts 164, the insulating layer coating device 112 is instructed to complete the coating work. The subsequent processes of the stringing device 12, the wire arranging device 14 and the string pre-solidification device 20 are consistent with the foregoing embodiment, and will not be described here.

[0095] Similarly, for the stringing of the IBC no master grid cell with continuous and uninterrupted fine grid lines, the method of applying glue points on the solder strip can also be used. The IBC no master grid cell string manufacturing device comprises:

[0096] The glue applying device 11 is used for applying glue points on the solder strip 15 at intervals, and at least two glue points are applied on each IBC no master grid cell 16. For the solder strip connecting two cells, at least four glue points 17 are included.

[0097] The insulating layer coating device 112 is used for coating the insulating layer on the positive fine grid line 161 and the negative fine grid line 162 of the IBC no master grid cell 16 along the setting path of the solder strip 15.

[0098] The coating position positioning device 113 instructs the insulating layer coating device 112 to coat the insulating layer on the positive fine grid line 161 and the negative fine grid line 162 of the IBC no master grid cell 16 along the setting path of the solder strip 15. For the positive solder strip 151 setting path, the insulating layer is coated on the negative fine grid line 162. For the negative solder strip 152 setting path, the insulating layer is coated on the positive fine grid line 161. The coating width of the insulating layer is greater than the width of the solder strip 15.

[0099] A wire distribution device 14 is used to pre-fix a plurality of solder strips 15 on the back of the IBC busbar-free cell sheet 16, and each solder strip 15 is pre-fixed on the IBC busbar-free cell sheet 16 through at least two adhesive points 17;

[0100] A solder strip position positioning device is used to instruct the wire distribution device 14 to position the adhesive points on the solder strip to be pre-fixed between the positive and negative fine grid lines 161 and 162 of the IBC busbar-free cell sheet 16, and to make the solder strip to be pre-fixed in the insulating layer region;

[0101] A stringing device 12 is used to place the IBC busbar-free cell sheet 16 according to the requirements of the IBC photovoltaic cell stringing process;

[0102] The fine grid lines on the IBC busbar-free cell sheet and the solder strip 15 are not completely connected or not connected at all, and the solder strip and the fine grid line are not parallelly arranged;

[0103] A string pre-solidification device 20 is used to pre-solidify the IBC busbar-free cell string after the IBC stringing process is completed.

[0104] The IBC busbar-free cell sheet stringing preparation device provided by the application adopts the method of first applying adhesive points on the back of the IBC busbar-free cell sheet, and applying at least two adhesive points along the path of each solder strip on the back, then arranging the IBC busbar-free cell sheet in a stringing direction with a gap upward, and then pre-fixing the solder strip on the back of the IBC busbar-free cell sheet by using the adhesive points, and the negative solder strip of the previous IBC busbar-free cell sheet is connected with the positive solder strip on the next IBC busbar-free cell sheet to form a series-connected IBC busbar-free cell string. The IBC busbar-free cell sheet stringing preparation device provided by the application adopts the method of first applying adhesive points, and then pre-fixing the solder strip on the back of the IBC busbar-free cell sheet by using the adhesive points. The solder strip of the photovoltaic cell string after stringing is not completely metallized connected with the IBC busbar-free cell sheet, which is a brand-new process equipment. The soldering process of the prepared photovoltaic cell string can realize low-temperature soldering material and process, overcoming the disadvantages brought by high-temperature soldering in the prior art. The cell sheet does not need to be provided with a busbar, a PAD point or a solder pad, further reducing the production cost of the photovoltaic module, making the IBC busbar-free cell sheet enter the mass production sequence of the photovoltaic cell module, and greatly promoting the technical development of the photovoltaic cell industry.

[0105] The existing IBC cell without main grid is mainly provided with positive fine grid lines 161 and negative fine grid lines 162 which are alternately and discontinuously arranged, the positive solder strip is welded with all the positive fine grid lines at the gap position corresponding to the discontinuous position of the negative fine grid lines, so that the short circuit caused by the connection between the positive solder strip and the negative fine grid lines is avoided, and the negative solder strip is welded with all the negative fine grid lines at the gap position corresponding to the discontinuous position of the positive fine grid lines, so that the short circuit caused by the connection between the negative solder strip and the positive fine grid lines is avoided. According to the characteristics of the existing IBC cell without main grid, a special adhesive point position positioning device is arranged to ensure that the adhesive point is applied to the position between the positive fine grid lines 161 and the negative fine grid lines 162 at the gap position or the corresponding gap position of the discontinuous positive fine grid lines 161 and the negative fine grid lines 162 of the IBC cell without main grid 16. In this way, the positive solder strip and the negative solder strip can be prevented from contacting and short-circuiting the negative fine grid lines and the positive fine grid lines, respectively. For the special embodiment of applying the adhesive point on the solder strip, a solder strip position positioning device is added to ensure that the wire laying device accurately pre-fixes the positive solder strip and the negative solder strip to the correct position, and the adhesive point on the solder strip is also exactly at the position between the positive fine grid lines 161 and the negative fine grid lines 162 at the gap position or the corresponding gap position of the discontinuous positive fine grid lines 161 and the negative fine grid lines 162 of the IBC cell without main grid 16. Thus, the purpose of ensuring that the positive solder strip and the negative solder strip can be prevented from contacting and short-circuiting the negative fine grid lines and the positive fine grid lines, respectively, is achieved.

[0106] The present application also provides a new possibility that the IBC cell without main grid 16 can be provided with continuous and uninterrupted positive fine grid lines 161 and negative fine grid lines 162, so that the processing technology of the IBC cell without main grid 16 is simpler, and the number and position of the subsequent solder strips are no longer limited by the IBC cell without main grid 16. In order to achieve this goal, the present application creatively provides an insulating layer coating device 112 and a coating position positioning device 113. The insulating layer coating device 112 is used to coat the insulating layer on the positive fine grid lines 161 and the negative fine grid lines 162 of the IBC cell without main grid 16 along the setting path of the solder strip 15. The coating position positioning device 113 instructs the insulating layer coating device 112 to coat the insulating layer on the positive fine grid lines 161 and the negative fine grid lines 162 of the IBC cell without main grid 16 along the setting path of the solder strip 15, and the insulating layer is coated on the negative fine grid lines 162 corresponding to the setting path of the positive solder strip 151, and the insulating layer is coated on the positive fine grid lines 161 corresponding to the setting path of the negative solder strip 152. The coating width of the insulating layer is greater than the width of the solder strip 15, and the solder strip is located in the insulating layer region after being pre-fixed. Thus, the purpose of ensuring that the positive solder strip and the negative solder strip can be prevented from contacting and short-circuiting the negative fine grid lines and the positive fine grid lines, respectively, is achieved, and the positive fine grid lines 161 and the negative fine grid lines 162 no longer need to be alternately and discontinuously arranged. For the special case of applying the adhesive point on the solder strip, the principle is similar, and details are not repeated.

[0107] For the interval glue on the solder strip, as long as the viscosity of the glue is adjusted to form a stable glue point on the solder strip.

[0108] Further, the glue point coating position of the glue applying device is irrelevant to the position of the PAD point or the solder pad on the IBC without busbar cell, or the IBC without busbar cell without PAD point or solder pad for preparing the photovoltaic cell string. Thus, the PAD point or the solder pad on the cell is not needed to be prepared, the process and production cost are saved, and the arrangement position and the number of the solder strip can be flexibly set, and the universality of the production equipment is greatly improved.

[0109] In actual application, for the IBC without busbar cell 16 with the positive electrode fine grid line 161 and the negative electrode fine grid line 162 arranged in an alternating intermittent mode, the IBC photovoltaic cell string preparation device can also be sequentially provided with the string forming device 12, the glue point position positioning device, the glue applying device 11, the wire arranging device 14 and the string pre-solidification device 20 according to the process of arranging the string first and then applying glue.

[0110] Similarly, for the IBC without busbar cell 16 with the positive electrode fine grid line 161 and the negative electrode fine grid line 162 arranged in a continuous and uninterrupted mode, the IBC photovoltaic cell string preparation device can also be sequentially provided with the string forming device 12, the glue applying device 11, the coating position positioning device 113, the insulating layer coating device 112, the wire arranging device 14 and the string pre-solidification device 20 according to the process of arranging the string first and then applying glue.

[0111] The IBC without busbar cell string preparation device provided by the application, the prepared photovoltaic cell string solder strip and the IBC without busbar cell are not completely metallized, which is a new process equipment, the soldering process of the prepared photovoltaic cell string can realize low-temperature soldering material and process, and the disadvantages caused by high-temperature soldering in the prior art are overcome. The busbar line, the PAD point or the solder pad on the cell is not needed to be set, the production cost of the photovoltaic module is further reduced, the IBC without busbar cell can enter the mass production sequence of the photovoltaic cell module, and the technical development of the photovoltaic cell industry is greatly promoted.

[0112] In addition to applying glue points on the IBC without busbar cell, the application provides another idea of process equipment, that is, interval glue on the solder strip, as long as the viscosity of the glue is adjusted to form a stable glue point on the solder strip, the technical solution can avoid the complex requirements for the glue applying device, and simplify the functional structure of the glue applying device.

[0113] Further, the position of the glue point coated by the glue applying device is irrelevant to the position of the PAD point or the solder pad on the IBC bus-bar-free cell, or the IBC bus-bar-free cell used for preparing the IBC bus-bar-free cell string is free of PAD point or solder pad. In this way, the PAD point or the solder pad on the cell is not needed to be prepared, thereby saving the process and production cost, and corresponding to the IBC bus-bar-free cell with continuous and uninterrupted fine grid lines, the arrangement position and the number of the solder strip can be flexibly set, thereby greatly improving the versatility of the production equipment.

[0114] In actual application, the stringing device 12 can include a transfer device such as a mechanical hand with a suction cup or other commonly used clamping and turning mechanism for adsorbing or clamping the IBC bus-bar-free cell 16, for cooperating with the glue applying device 11 to complete the back glue applying of the IBC bus-bar-free cell 16, cooperating with the wire arranging device 14 to complete the wire arranging, and completing the stringing process of the IBC bus-bar-free cell string according to the IBC.

[0115] Further, the film coating device is further included, which is used for coating the IBC bus-bar-free cell string after the pre-solidification along the direction of the solder strip or perpendicular to the direction of the solder strip.

[0116] Further, the material of the glue point is insulating glue.

[0117] Further, the insulating glue is used, and the position of the glue point can be arbitrarily set according to the cell pattern, and preferably, the position of the glue point is set near the two end edges of the IBC bus-bar-free cell, which can avoid the fine grid lines, realize the full good connection characteristics between the solder strip and the fine grid lines after the soldering of the solder strip is completed, and avoid the problems caused by the conductive adhesive, such as the more strict requirement for the size of the glue point, and the inconsistency of the electrical properties between the position of the glue point and other positions after the lamination and low-temperature soldering. In the condition of realizing the same electrical properties, the cost is lower.

[0118] In actual application, the transfer device is further included, which is used for correspondingly transferring the IBC bus-bar-free cell 16 to the glue applying device 11, the wire arranging device 14, the stringing device 12 and the pre-solidification device 20.

[0119] In some embodiments, a film coating device is further included to coat the pre-solidified photovoltaic cell string along the direction of the solder strip or perpendicular to the direction of the solder strip. For example, the film coating direction is perpendicular to the direction of the solder strip 15, and two strips of film are coated on each IBC cell 16, which is similar to a single-sided tape, further fixing the solder strip on the IBC cell 16, preventing the solder strip 15 from shifting and deforming, and making the solder strip 15 and the IBC cell contact more closely, which improves the soldering quality of the subsequent process of coating EVA film and low-temperature lamination. The film can also be coated along the direction of the solder strip, that is, each solder strip is coated with multiple segments or fully coated, further fixing the solder strip. The film can further prevent the EVA material from flowing between the solder strip and the IBC cell in the subsequent process, thereby affecting the reliability and quality of the final soldering, reducing the requirement for EVA fluidity, and adapting to a wider range.

[0120] In a preferred embodiment, the adhesive point 17 is made of insulating glue.

[0121] The IBC photovoltaic cell string manufacturing device is used to fix the solder strip and the fine grid line on each IBC cell by the limited adhesive point, and the solder strip and the fine grid line are not in complete electrical connection or are in close contact, so that the solder strip and the fine grid line can be completely disconnected or connected to only part of the fine grid line, and the IBC cells are also completely disconnected or not in complete electrical connection. Before the lamination and soldering are completed, these electrical connections are unstable. The insulating glue is used, and the adhesive point can be arranged at the edge of the IBC cell or in the area close to the edge, which can avoid the fine grid line and use the least adhesive point 17 to fix the solder strip 15, and also avoid the problems caused by the conductive adhesive, such as the more stringent requirement for the size of the adhesive point and the inconsistency of the electrical properties of the adhesive point and other positions after low-temperature lamination.

[0122] In this application, the wire arrangement refers to the arrangement of the solder strip, and the solder wire also refers to the solder strip. The insulating glue is used to fix the solder strip, and the physical series connection is completed after pre-solidification, so that thinner solder strips or solder wires can be used, and more solder strips can be arranged on the IBC cell, such as 18 solder strips per group in actual use, which effectively improves the photoelectric conversion efficiency of the module. The solder wire not only plays a role in electrical series connection, but also replaces the busbar of the main grid line, cancels the main grid line, the solder pad, or the PAD point, and greatly saves the consumption of silver paste and production costs.

[0123] As Figure 7 shown in the above embodiment, a solder strip buffer structure pressing device can also be added to press a fold line or bending structure in the middle of the solder strip. The fold line or bending structure can form a stress-relieving buffer structure 153, which can buffer the stress in the component process and ensure that the solder strip is not damaged. The fold line or bending structure is located between two adjacent main-grid-free cells. The buffer structure can adopt shapes such as v, w, s, etc. The solder strip buffer structure pressing device can also be integrated into the wire arranging device. When the linear solder strip enters the wire arranging device, the solder wire is first pressed to form the buffer structure 153, and then the solder strip with the buffer structure 153 is pushed to the wire arranging position to prepare for wire arranging.

[0124] In actual application, a transfer device can also be added, which is used to transfer the cells 16 to the glue applying device 11, the wire arranging device 14, and the stringing device 12 correspondingly. The technical effect of the technical scheme is that the cells 16 can be transferred correspondingly, so that each device can work on the cells 16. It is worth noting that the stringing device is part of the transfer device, which undertakes the task of moving and transferring the main-grid-free cells during wire arranging and stringing (sometimes including glue applying).

[0125] In actual application, the transfer device can include a conveyor belt. The conveyor belt has the advantage of flat surface, which facilitates the transfer of the cells 16. Further, the conveyor belt can be driven by a forward and reverse motor, so that the conveyor belt can realize forward motion or reverse motion, and can more specifically meet the requirements of the cell 16 processing technology and move the cells 16 to the corresponding device.

[0126] In specific implementation, the glue applying device 11 can be a screen printing machine or a dispensing machine. When the glue applying device 11 is a screen printing machine, only the position of the glue point 17 needs to be considered to make a screen plate mold. The screen printing machine can quickly apply glue to the cells 16, which has high work efficiency. When the glue applying device 11 is a dispensing machine, it can accurately dispense glue on the cells 16 to determine the glue point 17. The surface of the cell panel is clean and not easy to produce excess glue. The insulating layer coating device 112 can adopt a screen printing machine or a glue coating device with a movable glue coating head. The insulating layer coating device 112 can also adopt a device that pastes insulating small pieces made of insulating materials at specified positions.

[0127] The glue for making the glue point in the application can adopt the following materials: epoxy resin glue, UV glue, acrylic adhesive, ethylene-vinyl acetate copolymer hot melt adhesive, polyvinyl acetate, polyvinyl alcohol, acetal, acrylate, polystyrene, epoxy resin, acrylic resin, polyurethane resin, unsaturated polyester, butyl rubber, nitrile rubber, phenolic-polyvinyl acetal, epoxy-polyamide, polyamide, olefin polymer, one or more of the above polymers. The insulating layer in the application can be coated with the following materials: UV type insulating ink, insulating spacer ink, polyimide, insulating paint, etc.

[0128] The application also provides a photovoltaic cell module production device, comprising the IBC photovoltaic cell string making device described above, and further comprising a laminating and curing device for welding the solder strip and the IBC no-busbar cell together. The encapsulation production of the photovoltaic cell module is completed by the photovoltaic cell module production device comprising the device described above, the produced photovoltaic cell module has the advantages of IBC no-busbar cell, more number and smaller diameter of solder strip, and low-temperature laminating and welding, and has strong industrial competitive advantage.

[0129] For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the protection scope of the application.

Claims

1. An apparatus for fabricating IBC photovoltaic cell strings, characterized in that, A photovoltaic module based on IBC busbar-free cell, the IBC busbar-free cell (16) is arranged alternately with the positive fine grid line (161) and the negative fine grid line (162) being interrupted, comprising: A glue applying device (11) is used for applying glue points (17) on the back of the IBC busbar-free cell (16), and the glue points (17) are arranged at intervals along the arrangement path of the solder strip (15), and at least two glue points (17) are arranged on the back of each IBC busbar-free cell (16) corresponding to the arrangement path of each solder strip (15); A glue point position positioning device instructs the glue applying device to apply the glue points at the position between the positive fine grid line (161) and the negative fine grid line (162) at the gap or corresponding gap of the positive fine grid line (161) and the negative fine grid line (162) of the IBC busbar-free cell (16); A wire arranging device (14) is used for pre-fixing a plurality of solder strips (15) on the back of the IBC busbar-free cell (16), and each solder strip (15) is pre-fixed on the IBC busbar-free cell (16) through at least two glue points (17); A string forming device (12) is used for sequentially placing the IBC busbar-free cells (16) according to the IBC photovoltaic cell string forming process requirements; The fine grid line on the IBC busbar-free cell is not completely connected or not connected at all with the solder strip (15), and the solder strip is arranged non-parallelly with the fine grid line; A string pre-solidification device (20) is used for pre-solidifying the whole string of the IBC busbar-free cell string after the IBC string forming process is completed; Or, comprising: A glue applying device (11) is used for applying glue points at intervals on the solder strip (15), and at least two glue points are arranged on each IBC busbar-free cell (16); A wire arranging device (14) is used for pre-fixing a plurality of solder strips (15) on the back of the IBC busbar-free cell (16), and each solder strip (15) is pre-fixed on the IBC busbar-free cell (16) through at least two glue points (17); A solder strip position positioning device instructs the wire arranging device (14) to position and pre-fix the glue points on the solder strip at the position between the positive fine grid line (161) and the negative fine grid line (162) at the gap or corresponding gap of the positive fine grid line (161) and the negative fine grid line (162) of the IBC busbar-free cell (16); A string forming device (12) is used for sequentially placing the IBC busbar-free cells (16) according to the IBC photovoltaic cell string forming process requirements; The fine grid line on the IBC busbar-free cell is not completely connected or not connected at all with the solder strip (15), and the solder strip is arranged non-parallelly with the fine grid line; A string pre-solidification device (20) is used for pre-solidifying the whole string of the IBC busbar-free cell string after the IBC string forming process is completed; Or, the IBC busbar-free cell (16) is arranged continuously without interruption corresponding to the positive fine grid line (161) and the negative fine grid line (162), comprising: A glue applying device (11) is used to apply glue points (17) on the back of IBC busbar-free cell (16), the glue points (17) are arranged along the arrangement path of the solder strip (15), at least two glue points (17) are arranged on the back of each IBC busbar-free cell (16) corresponding to the arrangement path of each solder strip (15); An insulation layer coating device (112) is used to coat insulation layer on the positive and negative fine grid lines (161, 162) of IBC busbar-free cell (16) along the arrangement path of the solder strip (15); A coating position positioning device (113) instructs the insulation layer coating device (112) to coat insulation layer on the positive and negative fine grid lines (161, 162) of IBC busbar-free cell (16) along the arrangement path of the solder strip (15), corresponding to the arrangement path of the positive solder strip (151), the insulation layer is coated on the negative fine grid line (162), corresponding to the arrangement path of the negative solder strip (152), the insulation layer is coated on the positive fine grid line (161); the coating width of the insulation layer is greater than the width of the solder strip (15), and the solder strip is pre-fixed in the insulation layer area; A wire arranging device (14) is used to pre-fix a plurality of solder strips (15) on the back of IBC busbar-free cell (16), and each solder strip (15) is pre-fixed on the IBC busbar-free cell (16) through at least two glue points (17); A string forming device (12) is used to sequentially place IBC busbar-free cells (16) according to the IBC photovoltaic cell string forming process requirements; The fine grid lines on the IBC busbar-free cell and the solder strip (15) are not completely connected or not connected at all, and the solder strip and the fine grid line are arranged non-parallelly; A string pre-solidification device (20) is used for pre-solidifying the IBC busbar-free cell string after the IBC string forming process is completed; Or, comprising: A glue applying device (11) is used to apply glue points on the solder strip (15) at intervals, and at least two glue points are arranged on each IBC busbar-free cell (16); An insulation layer coating device (112) is used to coat insulation layer on the positive and negative fine grid lines (161, 162) of IBC busbar-free cell (16) along the arrangement path of the solder strip (15); A coating position positioning device (113) instructs the insulation layer coating device (112) to coat insulation layer on the positive and negative fine grid lines (161, 162) of IBC busbar-free cell (16) along the arrangement path of the solder strip (15), corresponding to the arrangement path of the positive solder strip (151), the insulation layer is coated on the negative fine grid line (162), corresponding to the arrangement path of the negative solder strip (152), the insulation layer is coated on the positive fine grid line (161); the coating width of the insulation layer is greater than the width of the solder strip (15); A wire distribution device (14) is used to pre-fix a plurality of solder strips (15) on the back of an IBC busbar-free cell (16), and each solder strip (15) is pre-fixed on the IBC busbar-free cell (16) by at least two glue points (17); A solder strip position positioning device is used to instruct the wire distribution device (14) to position the glue points on the solder strip to be pre-fixed between the positive fine grid lines (161) and the negative fine grid lines (162) of the IBC busbar-free cell (16), and to make the solder strip pre-fixed in the insulating layer area; A stringing device (12) is used to sequentially place the IBC busbar-free cells (16) according to the IBC photovoltaic cell stringing process requirements; The IBC busbar-free cell is not completely connected or not connected at all between the fine grid lines and the solder strip (15), and the solder strip is not parallel to the fine grid lines; A string pre-curing device (20) is used to pre-cure the IBC busbar-free cell string after the IBC stringing process is completed.

2. The apparatus according to claim 1, wherein The position of the glue point coated by the glue applying device is irrelevant to the position of the PAD point or the solder pad on the IBC busbar-free cell, or there is no PAD point or solder pad on the IBC busbar-free cell used to prepare the photovoltaic cell string.

3. The apparatus according to claim 1, wherein The IBC photovoltaic cell string manufacturing device sequentially sets the glue point position positioning device, the glue applying device (11), the stringing device (12), the wire distribution device (14), and the string pre-curing device (20) according to the process, corresponding to the IBC busbar-free cell (16) with the positive fine grid lines (161) and the negative fine grid lines (162) arranged in an alternating and intermittent manner. Alternatively, the IBC photovoltaic cell string manufacturing device sequentially sets the stringing device (12), the glue point position positioning device, the glue applying device (11), the wire distribution device (14), and the string pre-curing device (20) according to the process.

4. The apparatus according to claim 1, wherein The IBC photovoltaic cell string manufacturing device sequentially sets the glue applying device (11), the stringing device (12), the solder strip position positioning device, the wire distribution device (14), and the string pre-curing device (20) according to the process, corresponding to the IBC busbar-free cell (16) with the positive fine grid lines (161) and the negative fine grid lines (162) arranged in an alternating and intermittent manner.

5. The apparatus according to claim 1, wherein The IBC photovoltaic cell string manufacturing device sequentially sets the glue applying device (11), the coating position positioning device (113), the insulating layer coating device (112), the stringing device (12), the wire distribution device (14), and the string pre-curing device (20) according to the process, corresponding to the IBC busbar-free cell (16) with the positive fine grid lines (161) and the negative fine grid lines (162) arranged in a continuous and uninterrupted manner. Alternatively, the IBC photovoltaic cell string manufacturing device sequentially sets the stringing device (12), the glue applying device (11), the coating position positioning device (113), the insulating layer coating device (112), the wire distribution device (14), and the string pre-curing device (20) according to the process.

6. The apparatus according to claim 1, wherein The IBC cell string manufacturing device for the positive electrode fine grid line (161) and the negative electrode fine grid line (162) is provided with the IBC cell (16) without busbar in a continuous and uninterrupted manner, and the IBC photovoltaic cell string manufacturing device is sequentially provided with the glue applying device (11), the coating position positioning device (113), the insulation layer coating device (112), the stringing device (12), the solder strip position positioning device, the wire arranging device (14), and the string pre-solidification device (20) according to the working procedure.

7. The apparatus of any of claims 3-6, wherein the IBC photovoltaic cell string fabrication apparatus further comprises a second deposition source configured to deposit a second material on the substrate. The device further comprises a cell spacing control device for sending a command of the gap width between the adjacent IBC cell (16) without busbar to the stringing device (12) to control the gap width between the adjacent IBC cell (16) without busbar.

8. The IBC photovoltaic cell string fabrication apparatus according to any one of claims 1-6, characterized in that, The device further comprises a film coating device for coating the pre-solidified photovoltaic cell string along the direction of the solder strip or perpendicular to the direction of the solder strip.

9. The apparatus according to claim 8, wherein The material of the glue point is insulating glue.

10. The apparatus according to claim 9, wherein The IBC photovoltaic cell string manufactured by the IBC photovoltaic cell string manufacturing device is not electrically connected or not completely electrically connected between the IBC cell without busbar.

11. The photovoltaic cell string fabrication apparatus of claim 10, wherein, The device further comprises a solder strip buffer structure pressing device for pressing a fold line or a bending structure in the middle of the solder strip.

12. A photovoltaic cell module production apparatus characterized by comprising: The IBC photovoltaic cell string manufacturing device according to any one of claims 1 to 10 further comprises a laminating and solidifying device for welding the solder strip and the IBC cell without busbar together.

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