A gluing series process applied to negative interval battery series and a series machine

Abstract

The application discloses a gluing series connection process and series connection machine applied to a negative interval battery string, and the gluing series connection process comprises the following steps: S1, a plurality of support glue points are formed by gluing the upper surface of a battery piece through a gluing mechanism; S2, a battery piece conveying mechanism places the battery piece after gluing on a piece placing position of a solder strip battery piece series connection conveying mechanism; S3, when the battery pieces stacked on the solder strip battery piece series connection conveying mechanism are conveyed to a welding station in sequence, a heating mechanism or a UV lamp mechanism of the welding station welds or solidifies the stacked battery pieces to form a negative interval battery string; and S4, when the number of battery pieces in the negative interval battery string reaches a predetermined number, a cutting mechanism cuts the negative interval battery string of the predetermined number of battery pieces, and a negative interval battery string with a predetermined length is obtained. By arranging the support glue points, the application effectively solves the problems of hidden crack and short circuit between strings in the existing negative interval piece arranging process.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery piece series connection, in particular to a gluing series connection process and series connection machine applied to a negative interval battery series. BACKGROUND

[0002] The negative interval welding between battery pieces in a photovoltaic cell series and the battery pieces is the development trend of the technical path of future high-efficiency components by optimizing current step-by-step and improving light utilization; the negative interval piece arrangement mode is used to form a stack between the battery piece and the battery piece, the overlapping area is physically isolated and electrically insulated through the piece-to-piece film, the piece and the piece of the battery piece are connected through the welding strip, and the multiple round and thin welding strips support the upper battery piece in the stacking area; the existing technology has the possibility of breaking the piece at the moment of placing the piece or during lamination, and may also cause the welding strip to be displaced during lamination, so that the bearing film cannot play an insulating role, causing the upper and lower battery piece grid lines to be in contact and thus short-circuiting; the negative interval piece arrangement mode increases the production difficulty and cost; therefore, the gluing series connection process and series connection machine applied to the negative interval battery series are provided to solve the above problems. SUMMARY

[0003] One of the purposes of the application is to provide a gluing series connection process and series connection machine applied to a negative interval battery series, so as to solve the problems of hidden crack and broken piece risk and series short circuit in the existing negative interval piece arrangement process.

[0004] The gluing series connection process and series connection machine applied to the negative interval battery series can be realized through the following technical scheme:

[0005] The gluing series connection process and series connection machine applied to the negative interval battery series can be realized through the following technical scheme:

[0006] S1, a gluing mechanism is used to glue the upper surface of the battery piece to form a plurality of support glue points, the plurality of support glue points are distributed at the edge of the battery piece and are arranged on both sides of the main grid line of the battery piece or the connecting point connecting line position of the to-be-connected welding strip, and the edge is located in the negative interval connecting area overlapping with the next battery piece;

[0007] S2, the battery piece carrying mechanism places the battery piece with completed sizing to the battery piece placing position of the ribbon battery piece series connection conveying mechanism, the edges of the multiple support glue points are towards the input end of the ribbon battery piece series connection conveying mechanism, the battery piece is connected with the previous battery piece on the ribbon battery piece series connection conveying mechanism through multiple fixed-length ribbons, the battery piece is pressed on the front half of the ribbon, and the rear half of the ribbon is pressed on the previous battery piece; the edges of the battery piece and the previous battery piece on the ribbon battery piece series connection conveying mechanism are overlapped to form a negative interval connection area, and the multiple support glue points at the edges of the previous battery piece support the edges of the battery piece;

[0008] S3, when the battery pieces stacked on the ribbon battery piece series connection conveying mechanism are conveyed to the welding station in sequence, the heating mechanism or the UV lamp mechanism of the welding station welds or solidifies the stacked battery pieces to form a negative interval battery string;

[0009] S4, when the number of battery pieces in the negative interval battery string reaches a predetermined number, the cutting mechanism cuts the negative interval battery string of the predetermined number of battery pieces to obtain a negative interval battery string with a predetermined length.

[0010] In one embodiment, in step S1, the first sizing mechanism first sizes the upper surface of the battery piece to form multiple ribbon fixing glue points, then the turnover mechanism arranged below the first sizing mechanism turns over the other surface of the battery piece as the upper surface, and the first sizing mechanism sizes the upward surface of the battery piece to form multiple support glue points and multiple ribbon fixing glue points.

[0011] In one embodiment, the first sizing mechanism comprises a fixed frame fixedly arranged at the side of the ribbon battery piece series connection conveying mechanism, a Z-axis movement assembly arranged on the fixed frame, an X-axis movement assembly arranged on the Z-axis movement assembly, a sliding frame slidingly arranged on the X-axis movement assembly, a printing steel plate assembly and a glue cylinder assembly fixedly arranged on the sliding frame respectively, the ribbon fixing glue points and the support glue points printed on the battery piece are positioned by the printing steel plate assembly, and a doctor blade assembly movably arranged on the sliding frame and capable of moving relative to the printing steel plate assembly.

[0012] In one embodiment, in step S1, the second sizing mechanism first sizes the upper surface of the battery piece to form multiple ribbon fixing glue points, then the turnover mechanism arranged below the second sizing mechanism turns over the other surface of the battery piece as the upper surface, the second sizing mechanism sizes the upward surface of the battery piece to form multiple ribbon fixing glue points, and then the second sizing mechanism sizes the upward surface of the battery piece to form multiple support glue points; the multiple ribbon fixing glue points are distributed at the connection point connecting line position of the to-be-connected ribbon, and are used for fixing and connecting the ribbon on the battery piece.

[0013] In one embodiment, the second gluing mechanism comprises a solder strip glue point gluing assembly and a dispensing assembly; the solder strip glue point gluing assembly performs the gluing operation of multiple solder strip fixed glue points on the battery piece; the dispensing assembly is arranged at the rear end of the solder strip glue point gluing assembly, and performs the dispensing operation of multiple support glue points on the battery piece whose gluing operation is completed by the solder strip glue point gluing assembly.

[0014] In one embodiment, the dispensing assembly comprises a support mechanism; a glue cylinder mechanism is detachably and fixedly arranged on the support mechanism, and contains flexible glue; a lifting driving device is arranged on the support mechanism; a dispensing mechanism is longitudinally connected to the lifting driving device and is in communication with the glue cylinder mechanism, and the lifting driving device drives the dispensing mechanism to move linearly in the longitudinal direction to perform the dispensing operation of multiple support glue points on the edge of the battery piece arranged directly below the dispensing mechanism.

[0015] In one embodiment, the dispensing mechanism comprises a lifting plate which is longitudinally connected to the lifting driving device; a connecting cavity which is detachably and fixedly connected to the lifting plate is a hollow cavity capable of containing flexible glue; multiple dispensing heads are uniformly and in communication arranged below the connecting cavity; and a connecting pipe is in communication with the glue cylinder mechanism and the connecting cavity at both ends.

[0016] In one embodiment, the distance between the support glue point and the outermost edge of the battery piece is 0.1-0.2mm, the size of the support glue point is 0.3*1.5mm, the height is 0.15-0.2mm, and the spacing between two adjacent support glue points is 4mm.

[0017] In one embodiment, the second battery piece is stacked on the edge of the first battery piece, and the overlapping range of the two is 0.4-0.6mm.

[0018] The series connection machine for negative interval battery string comprises the gluing series connection process of any one of the above.

[0019] It also comprises a battery piece feeding mechanism, a solder strip feeding mechanism, and a solder strip traction and laying mechanism.

[0020] The battery piece conveying mechanism conveys the battery piece to the glue applying mechanism; the glue applying mechanism performs glue applying operation on the battery piece to fix the solder strip fixed glue point and the support glue point; the battery piece conveying mechanism sequentially transports the battery piece on which the glue applying operation is completed by the glue applying mechanism to the input end of the solder strip battery piece series conveying mechanism; the solder strip battery piece series conveying mechanism arranges a plurality of battery pieces in negative spacing and can perform curing operation on the solder strip fixed glue point and the support glue point, and two adjacent battery pieces are connected in negative spacing through the corresponding support glue point; the solder strip conveying mechanism places the solder strip roll to provide the solder strip required for battery string welding; and the solder strip traction laying mechanism lays the solder strip of a predetermined length on the plurality of battery pieces arranged in negative spacing arranged on the solder strip battery piece series conveying mechanism, and the solder strip is connected with the corresponding solder strip fixed glue point.

[0021] Compared with the prior art, the application has the following beneficial effects:

[0022] The glue applying series process and series machine applied to the negative spacing battery string set a plurality of support glue points on the edge of the battery piece through the glue applying mechanism, so that two adjacent battery pieces are connected in negative spacing through the plurality of support glue points, effectively solving the problems of hidden crack and short circuit between strings in the existing negative spacing piece arranging process; and the battery piece glue applying device performs synchronous printing operation on the solder strip fixed glue point and the support glue point, which improves the production efficiency of the series machine to a certain extent.

[0023] The glue applying series process and series machine applied to the negative spacing battery string replace the synchronous printing operation of the buffer glue point and the fixed solder strip glue point with the glue dispensing on the edge of the battery piece, separate the buffer glue point and the fixed solder strip glue point, and realize the operation in different stations, so that the glue for fixing the solder strip is more selective, the process upgrade is more flexible, and the cost is lower; the buffer glue point at the edge of the battery piece is realized by the glue dispensing mechanism, so that the size and height of the glue point can be better controlled, and the consistency of printing is not limited, so that the function of the glue point can be more accurately achieved; and in the case that the existing equipment of the client does not be equipped with a printing machine, the negative spacing battery string process upgrade can also be realized by adding the glue dispensing mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1It is a flowchart of a gluing series process applied to a negative interval battery string of the application;

[0026] Figure 2 It is a top view structural schematic diagram of a battery piece after gluing in the gluing series process applied to the negative interval battery string of the application;

[0027] Figure 3 It is a schematic diagram of glue connection between two battery pieces after gluing in the gluing series process applied to the negative interval battery string of the application;

[0028] Figure 4 It is Figure 3 The enlarged schematic diagram of A shown in the figure;

[0029] Figure 5 It is a structural schematic diagram of a battery string in the gluing series process applied to the negative interval battery string of the application.

[0030] Indicated in the figure: 10, negative interval battery string; 11, battery piece; 111, edge; 112, solder strip fixing glue point; 113, supporting glue point; 12, solder strip. DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some but not all of the embodiments of the application. The components of the embodiments of the application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the application without creative labor are within the scope of protection of the application.

[0033] Please refer to Figures 1-5 The gluing series process applied to the negative interval battery string of the application includes the following steps:

[0034] S1, forming a plurality of supporting glue points 113 on the upper surface of the battery piece 11 by a gluing mechanism;

[0035] Among them, the plurality of supporting glue points 113 are distributed at the edge 111 of the battery piece 11 and are arranged on both sides of the main grid line of the battery piece 11 or the connecting point connecting line position of the to-be-connected solder strip, and the edge 111 is located in the negative interval connecting area overlapping with the next battery piece 11;

[0036] S2, the battery piece carrying mechanism places the sizing completed battery piece 11 to the piece placing position of the welding strip battery piece series connection conveying mechanism;

[0037] Wherein, the edge 111 where the plurality of support glue points 113 are located is towards the input end of the welding strip battery piece series connection conveying mechanism, the battery piece 11 and the previous battery piece 11 on the welding strip battery piece series connection conveying mechanism are connected in series through a plurality of fixed-length welding strips 12, the battery piece 11 is pressed on the front half of the welding strip 12, and the rear half of the welding strip 12 is pressed on the previous battery piece 11; the edge 111 of the battery piece 11 and the previous battery piece 11 on the welding strip battery piece series connection conveying mechanism has some overlap to form a negative spacing connection area, and the plurality of support glue points 113 on the edge 111 of the previous battery piece 11 support the edge 111 of the battery piece 11;

[0038] S3, when the stacked battery pieces 11 on the welding strip battery piece series connection conveying mechanism are conveyed to the welding station in sequence, the heating mechanism or the UV lamp mechanism of the welding station welds or solidifies the stacked battery pieces 11 to form a negative spacing battery string 10;

[0039] S4, when the number of battery pieces 11 in the negative spacing battery string 10 reaches a predetermined number, the cutting mechanism cuts the negative spacing battery string 10 of the predetermined number of battery pieces 11 to obtain a negative spacing battery string 10 with a predetermined length.

[0040] In step S1, in some embodiments, the first gluing mechanism first glues the upper surface of the battery sheet 11 to form a plurality of solder strip fixing glue points 112, and then the overturning mechanism arranged below the first gluing mechanism overturns the other surface of the battery sheet 11 as the upper surface, and the first gluing mechanism synchronously glues the upward surface of the battery sheet 11 to form a plurality of supporting glue points 113 and a plurality of solder strip fixing glue points 112. Specifically, the first gluing mechanism comprises a fixed frame, a Z-axis movement assembly, an X-axis movement assembly, a sliding frame, a printing steel plate assembly, a scraper assembly and a glue cylinder assembly; the fixed frame is fixedly arranged at the side edge of the solder strip battery sheet series conveying mechanism; the Z-axis movement assembly is arranged on the fixed frame; the X-axis movement assembly is arranged on the Z-axis movement assembly, and the Z-axis movement assembly drives the X-axis movement assembly to move in the Z-axis direction; the sliding frame is slidingly arranged on the X-axis movement assembly, and is driven by the cooperation of the Z-axis movement assembly and the X-axis movement assembly to move in the XZ-axis direction; the printing steel plate assembly and the glue cylinder assembly are fixedly arranged on the sliding frame, and move with the sliding frame; the printing steel plate assembly is used for positioning operation of the solder strip fixing glue points 112 and the supporting glue points 113 printed on the battery sheet 11, and the glue cylinder assembly provides printing glue for the printing steel plate assembly; the scraper assembly is movably arranged on the sliding frame and can move relative to the printing steel plate assembly, and the printing steel plate assembly and the scraper assembly cooperate to perform printing operation of the solder strip fixing glue points 112 and the supporting glue points 113 on the battery sheet 11 arranged directly below the printing steel plate assembly.

[0041] In step S1, in some embodiments, the first gluing mechanism first glues the upper surface of the battery sheet 11 to form a plurality of solder strip fixing glue points 112, and then the overturning mechanism arranged below the first gluing mechanism overturns the other surface of the battery sheet 11 as the upper surface, and the first gluing mechanism synchronously glues the upward surface of the battery sheet 11 to form a plurality of supporting glue points 113 and a plurality of solder strip fixing glue points 112. Specifically, the first gluing mechanism comprises a fixed frame, a Z-axis movement assembly, an X-axis movement assembly, a sliding frame, a printing steel plate assembly, a scraper assembly and a glue cylinder assembly; the fixed frame is fixedly arranged at the side edge of the solder strip battery sheet series conveying mechanism; the Z-axis movement assembly is arranged on the fixed frame; the X-axis movement assembly is arranged on the Z-axis movement assembly, and the Z-axis movement assembly drives the X-axis movement assembly to move in the Z-axis direction; the sliding frame is slidingly arranged on the X-axis movement assembly, and is driven by the cooperation of the Z-axis movement assembly and the X-axis movement assembly to move in the XZ-axis direction; the printing steel plate assembly and the glue cylinder assembly are fixedly arranged on the sliding frame, and move with the sliding frame; the printing steel plate assembly is used for positioning operation of the solder strip fixing glue points 112 and the supporting glue points 113 printed on the battery sheet 11, and the glue cylinder assembly provides printing glue for the printing steel plate assembly; the scraper assembly is movably arranged on the sliding frame and can move relative to the printing steel plate assembly, and the printing steel plate assembly and the scraper assembly cooperate to perform printing operation of the solder strip fixing glue points 112 and the supporting glue points 113 on the battery sheet 11 arranged directly below the printing steel plate assembly.

[0042] Specifically, the second gluing mechanism comprises a solder strip glue point gluing assembly and a dispensing assembly; the solder strip glue point gluing assembly performs a gluing operation on the battery piece to form a plurality of solder strip fixing glue points 112, and its structure is similar to that of the first gluing mechanism, so the specific structure is not described here; the dispensing assembly is arranged at the rear end of the solder strip glue point gluing assembly, and performs a dispensing operation on the battery piece 11 completed by the solder strip glue point gluing assembly to form a plurality of supporting glue points 113. Specifically, the dispensing assembly comprises a supporting mechanism, a glue cylinder mechanism, a lifting driving device and a dispensing mechanism; the supporting mechanism is a supporting body; the glue cylinder mechanism is detachably fixed on the supporting mechanism and contains flexible glue therein; the lifting driving device is arranged on the supporting mechanism; the dispensing mechanism is longitudinally connected to the lifting driving device and is in communication with the glue cylinder mechanism, and the lifting driving device drives the dispensing mechanism to move linearly in the longitudinal direction, so as to perform a dispensing operation on the edge 111 of the battery piece 11 arranged directly below the dispensing mechanism to form a plurality of supporting glue points 113. Preferably, the dispensing mechanism comprises a lifting plate, a connecting cavity, a plurality of dispensing heads and a connecting pipe; the lifting plate is longitudinally connected to the lifting driving device, and the lifting driving device drives the lifting plate to move linearly in the longitudinal direction; the connecting cavity is a hollow cavity, which is detachably fixed on the lifting plate and can contain flexible glue therein, and the lifting driving device drives the connecting cavity to move linearly in the longitudinal direction through the lifting plate; the plurality of dispensing heads are uniformly arranged below the connecting cavity and perform a dispensing operation on the edge 111 of the battery piece 11 to form a plurality of supporting glue points 113; one end of the connecting pipe is in communication with the glue cylinder mechanism, and the other end is in communication with the connecting cavity, and the flexible glue in the glue cylinder mechanism enters the connecting cavity through the connecting pipe and then performs a dispensing operation on the edge 111 of the battery piece 11 to form a plurality of supporting glue points 113 through the plurality of dispensing heads.

[0043] Specifically, the supporting glue points 113 are printed or dispensed on the edge 111 of the battery piece 11, and the distance from the outermost side of the edge of the battery piece 11 is 0.1-0.2 mm, the size of the supporting glue points 113 is 0.3*1.5 mm, the height is 0.15-0.2 mm, and the interval is 4 mm. Specifically, the second battery piece 11 is stacked on the edge of the first battery piece 11, and the overlapping range of the two is 0.4-0.6 mm, and the second battery piece 11 just presses on the plurality of supporting glue points 113 below the first battery piece 11, which serves as a buffer operation between the first battery piece 31 and the second battery piece 31; then the solder strip traction laying mechanism is used to lay a plurality of solder strips 12 on the corresponding solder strip fixing glue points 112 of the plurality of battery pieces 11 connected in negative pitch, and finally the heating operation of the solder strip battery piece series connection conveying mechanism is used to cure the plurality of solder strip fixing glue points 112 and the plurality of supporting glue points 113 on the plurality of battery pieces 11 to form a negative pitch battery string 10, thereby performing a gluing series operation on the negative pitch battery string 10.

[0044] The series connection machine applied to the negative interval battery string comprises the sizing series connection process of any one of the above;

[0045] The battery piece feeding mechanism, the welding strip feeding mechanism and the welding strip traction laying mechanism are further included;

[0046] The battery piece feeding mechanism conveys the battery piece 11 to the sizing mechanism; the sizing mechanism performs sizing operation on the battery piece 11 to fix the welding strip fixed glue point 112 and the support glue point 113; the battery piece conveying mechanism sequentially transports the battery piece 11 sized by the sizing mechanism to the input end of the welding strip battery piece series connection conveying mechanism; the welding strip battery piece series connection conveying mechanism arranges a plurality of battery pieces 11 in a negative interval and can perform curing operation on the welding strip fixed glue point 112 and the support glue point 113, and the adjacent two battery pieces 11 are connected in a negative interval through the corresponding support glue point 113; the welding strip feeding mechanism places the welding strip roll to provide the welding strip required for the battery string welding; the welding strip traction laying mechanism lays the welding strip 12 of a predetermined length on the plurality of battery pieces 11 arranged in a negative interval arranged on the welding strip battery piece series connection conveying mechanism, and the welding strip 12 is connected in contact with the corresponding welding strip fixed glue point 112.

[0047] The technical features of the above-described embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0048] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent scope of the present application. It should be pointed out that for the ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A bonding and series connection process for negative-pitch battery strings, characterized in that, Includes the following steps: S1, Multiple support adhesive points are formed by applying adhesive to the upper surface of the battery cell through the adhesive application mechanism. The multiple support adhesive points are distributed at the edge of the battery cell and are located on both sides of the connection point of the main grid line or the connection point of the solder strip to be connected. The edge is located in the negative spacing connection area that overlaps with the next battery cell. S2, the cell handling mechanism places the coated cells onto the placement position of the solder strip cell series conveying mechanism. The edges of the multiple support adhesive points face the input end of the solder strip cell series conveying mechanism. The cell is connected to the previous cell on the solder strip cell series conveying mechanism by multiple fixed-length solder strips. The cell is pressed on the front half of the solder strip, and the back half of the solder strip is pressed on the previous cell. The edges of the cell overlap with the previous cell on the solder strip cell series conveying mechanism to form a negative-pitch connection area. The multiple support adhesive points at the edge of the previous cell provide support for the edge of the cell. S3, when the battery cells stacked on the welding strip battery cell series conveying mechanism are sequentially conveyed to the welding station, the heating mechanism or UV lamp mechanism of the welding station welds or solidifies the stacked battery cells to form a negative-pitch battery string. S4, When the number of battery cells in the negative-pitch battery string reaches a predetermined number, the cutting mechanism cuts the negative-pitch battery string with the predetermined number of battery cells to obtain a negative-pitch battery string of predetermined length. In step S1, the adhesive application mechanism first applies adhesive to the upper surface of the battery cell to form multiple solder ribbon fixing adhesive points. Then, a flipping mechanism located below the adhesive application mechanism flips the other side of the battery cell to become the upper surface. The adhesive application mechanism then applies adhesive to the upper surface of the battery cell to form multiple solder ribbon fixing adhesive points. Finally, the adhesive application mechanism applies adhesive to the upper surface of the battery cell to form multiple support adhesive points. The multiple solder ribbon fixing adhesive points are distributed at the connection points of the solder ribbons to be connected, and are used to fix and connect the solder ribbons in series on the battery cell. The adhesive application mechanism includes a solder ribbon adhesive dot application component and a dispensing component. The solder ribbon adhesive dot application component applies multiple solder ribbon fixing adhesive dots to the battery cell. The dispensing component is located at the rear end of the solder ribbon adhesive dot application component and applies multiple supporting adhesive dots to the battery cell after the solder ribbon adhesive dot application component has applied adhesive. The dispensing component includes a support mechanism; a glue cylinder mechanism detachably fixed on the support mechanism, which contains flexible adhesive; a lifting drive device on the support mechanism; and a dispensing mechanism longitudinally driven and connected to the lifting drive device and communicating with the glue cylinder mechanism. The lifting drive device drives the dispensing mechanism to move linearly in the longitudinal direction, applying multiple supporting adhesive dots to the edge of the battery cell located directly below the dispensing mechanism.

2. The adhesive application and series connection process for negative-pitch battery strings according to claim 1, characterized in that, The dispensing mechanism includes a lifting plate, which is longitudinally driven and connected to the lifting drive device; a connecting cavity detachably and fixedly connected to the lifting plate is a hollow cavity that can accommodate flexible adhesive; multiple dispensing heads are uniformly and interconnected below the connecting cavity; and a connecting pipe is connected at both ends to the glue cylinder mechanism and the connecting cavity, respectively.

3. The adhesive application and series connection process for negative-pitch battery strings according to claim 1, characterized in that, The distance between the outermost edge of the supporting adhesive dot and the edge of the battery cell is 0.1-0.2 mm. The size of the supporting adhesive dot is 0.3*1.5 mm, the height is 0.15-0.2 mm, and the spacing between two adjacent supporting adhesive dots is 4 mm.

4. The adhesive application and series connection process for negative-pitch battery strings according to claim 1, characterized in that, The second solar cell is stacked on the edge of the first solar cell, with an overlap of 0.4-0.6 mm.

5. A series connection machine for negative-pitch battery strings, characterized in that, Applied to the sizing series process according to any one of claims 1-4; It also includes a cell feeding mechanism, a welding strip feeding mechanism, and a welding strip traction and laying mechanism; The battery cell feeding mechanism conveys the battery cells to the adhesive application mechanism; the adhesive application mechanism applies adhesive to the battery cells, fixing and supporting the adhesive points; the battery cell transport mechanism sequentially transfers the glued battery cells to the input end of the solder strip battery cell series conveying mechanism; the solder strip battery cell series conveying mechanism arranges multiple battery cells with negative spacing and can cure the solder strip fixing and supporting adhesive points, with adjacent battery cells connected by negative spacing through corresponding supporting adhesive points; the solder strip feeding mechanism places solder strip rolls to provide the solder strip required for battery string welding; the solder strip traction and laying mechanism lays solder strip of a predetermined length onto the multiple battery cells arranged with negative spacing on the solder strip battery cell series conveying mechanism, with the solder strip contacting and connecting with the corresponding solder strip fixing adhesive points.

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