A point mechanism and series connection machine applied to negative interval battery string

Abstract

The utility model discloses a point gum mechanism and series connection machine applied to negative interval battery string, point gum mechanism includes support subassembly, glue cylinder subassembly and lifting drive arrangement are set up on support subassembly respectively, point gum subassembly is longitudinally transmission connection in lifting drive arrangement and is connected with glue cylinder subassembly intercommunication, and it includes lifting plate, the connecting cavity of detachable fixed connection on lifting plate, multiple point gum heads are intercommunication and are arranged below connecting cavity, and the connecting pipe of two ends respectively with point gum subassembly, connecting cavity intercommunication connection. The utility model discloses through the mutual cooperation of lifting drive arrangement, glue cylinder subassembly and point gum subassembly, carries out the point gum operation at the edge of battery piece, and effectively solves the hidden crack broken piece risk and the problem of string interval short circuit in the existing negative interval row piece process.

Description

Technical Field

[0001] This utility model relates to the field of battery cell series connection technology, and more specifically, to a dispensing mechanism and series connection machine for negative-pitch battery strings. Background Technology

[0002] Negative-pitch welding of photovoltaic cell strings, by optimizing current distribution and improving light utilization, has become a development trend in the future high-efficiency module technology path. This negative-pitch arrangement creates a stack between the cells in the string. An interlayer film provides physical isolation and electrical insulation to the overlapping areas. The cells are connected by solder ribbons, with multiple thin, round ribbons supporting the cells above them in the stacked area. However, existing technologies have the potential for cell breakage during placement or lamination, and the solder ribbons may shift during lamination, preventing the supporting film from providing insulation and causing short circuits due to contact between the grid lines of the cells at the stacked position. This negative-pitch arrangement increases production difficulty and cost. Therefore, this paper provides a bonding and series connection process and machine for negative-pitch cell strings to solve these problems. Utility Model Content

[0003] One of the objectives of this invention is to provide a dispensing mechanism and a series connection machine for negative-pitch battery strings, so as to solve the problems of hidden crack breakage risk and inter-string short circuit in the existing negative-pitch battery string arrangement process.

[0004] The present invention relates to a dispensing mechanism and series connection machine for negative-pitch battery strings, which can be achieved through the following technical solutions:

[0005] This utility model discloses a dispensing mechanism for negative-pitch battery strings, comprising a support assembly; a glue cylinder assembly detachably and fixedly mounted on the support assembly; a lifting drive device mounted on the support assembly; and a dispensing assembly longitudinally connected to the lifting drive device and communicating with the glue cylinder assembly.

[0006] The dispensing assembly 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, which is a hollow cavity for holding flexible adhesive; multiple dispensing heads disposed below the connecting cavity, through which dispensing operations are performed at the edge of the battery cell; and a connecting pipe that is connected to the dispensing assembly and the connecting cavity at both ends.

[0007] In one embodiment, the support assembly includes a fixing plate body and a mounting cavity fixedly disposed on the fixing plate body, wherein the rubber sleeve assembly is detachably disposed on the mounting cavity.

[0008] In one embodiment, the fixing plate body is provided with a plurality of fixing holes.

[0009] In one embodiment, the glue tube assembly includes a glue tube body detachably disposed on the mounting cavity, the glue tube body being a hollow cavity containing flexible glue; a first connector disposed on the glue tube body and connected to the connecting pipe; and a cover detachably connected to the other end of the glue tube body opposite to the first connector.

[0010] In one embodiment, the main body of the rubber tube is made of a transparent or semi-transparent material.

[0011] In one embodiment, the outer side of the rubber tube body is provided with a longitudinal scale.

[0012] In one embodiment, a gas connector is provided through the cover, through which gas is added to the rubber tube body.

[0013] In one embodiment, a second connector is provided on the connecting cavity, and the two ends of the connecting tube are respectively connected to the first connector and the second connector.

[0014] In one embodiment, the lifting drive device is a lifting cylinder.

[0015] The present invention provides a series connection machine for negative-pitch battery strings, which includes a battery cell gluing device, wherein the battery cell gluing device includes the dispensing mechanism described in any of the above-mentioned claims.

[0016] It also includes a welding strip feeding device, a cell conveying device, a cell handling device, a welding strip laying device, and a cell welding strip series connection device;

[0017] The solar cell coating device applies adhesive to the solar cells; the solar cell conveying device transports the coated solar cells; the solar cell handling device transports the coated solar cells from the output end of the solar cell conveying device to the input end of the solar cell welding strip series connection device; the welding strip feeding device places welding strip rolls to provide the welding strips required for solar cell string welding; and the welding strip laying device lays welding strips of a predetermined length onto the coated solar cells at the input end of the solar cell welding strip series connection device.

[0018] Compared with the prior art, the beneficial effects of the dispensing mechanism and series connection machine of this utility model applied to negative-pitch battery strings are as follows:

[0019] This utility model discloses a dispensing mechanism for negative-pitch battery strings and a lifting drive device in a series connection machine. The lifting plate sequentially drives the connecting cavity and multiple dispensing heads downward to the edge of the battery cell to be dispensed. At the same time, the pressure operation allows the flexible glue in the glue cylinder to enter the connecting cavity. Then, multiple dispensing heads perform synchronous dispensing operation at the edge of the battery cell. This effectively solves the problems of hidden crack breakage risk and inter-string short circuit in the existing negative-pitch cell arrangement process.

[0020] This utility model discloses a dispensing mechanism and series connection machine for negative-pitch battery strings. It replaces the simultaneous printing of support adhesive dots and fixing solder ribbon adhesive dots by dispensing adhesive at the edge of the stacked battery cells. This separates the support adhesive dots and fixing solder ribbon adhesive dots, implementing them at different workstations. This allows for a wider selection of adhesives for the fixing solder ribbon, more flexible process upgrades, and lower costs. The support adhesive dots at the edge of the battery cells are dispensed through the dispensing mechanism, allowing for better control over their size and height, and eliminating limitations due to printing consistency. This enables more precise achievement of the function of the support adhesive dots. Furthermore, even when the client's existing equipment does not include a printing machine, the negative-pitch battery string process can be upgraded by adding a dispensing mechanism. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of a dispensing mechanism for negative-pitch battery strings according to this utility model;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of a dispensing mechanism for negative-pitch battery strings from another perspective.

[0024] Figure 3 This is a schematic diagram of the structure of a dispensing mechanism for negative-pitch battery strings, showing the position of the adhesive dots on the battery cells during the dispensing process.

[0025] Figure 4 This is a schematic diagram of the bonding of two battery cells after the dispensing of a dispensing mechanism for a negative-pitch battery string is completed.

[0026] Figure 5 yes Figure 4 An enlarged schematic diagram of point A shown.

[0027] The diagram shows: 10, dispensing mechanism; 11, support assembly; 111, fixing plate body; 1111, fixing hole; 112, mounting cavity; 12, glue tube assembly; 121, glue tube body; 122, first connector; 123, cover; 1231, gas connector; 13, lifting drive device; 14, dispensing assembly; 141, lifting plate; 142, connecting cavity; 1421, second connector; 143, dispensing head; 144, connecting pipe; 20, battery cell; 21, supporting glue dot. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-5 As shown, the present invention discloses a dispensing mechanism 10 for negative-pitch battery strings, which is mainly used in the dispensing process of a series-connected machine. It includes a support assembly 11, a glue cylinder assembly 12, a lifting drive device 13, and a dispensing assembly 14. The support assembly 11 is the main support body. The glue cylinder assembly 12 is detachably and fixedly mounted on the support assembly 11 and contains flexible glue. The lifting drive device 13 is mounted on the support assembly 11. The dispensing assembly 14 is longitudinally driven and connected to the lifting drive device 13 and communicates with the glue cylinder assembly 12. The lifting drive device 13 drives the dispensing assembly 14 to move linearly in the longitudinal direction, thereby performing a dispensing operation on the edge of the battery cell 20 located directly below the dispensing assembly 14.

[0031] Please see Figure 1 and Figure 2 As shown, in this embodiment, the support assembly 11 includes a fixing plate body 111 and a mounting cavity 112; the fixing plate body 111 is the support body; the mounting cavity 112 is fixedly disposed on the fixing plate body 111, and the rubber sleeve assembly 12 is detachably disposed on the mounting cavity 112. Specifically, a plurality of fixing holes 1111 are provided through the fixing plate body 111, and the fixing plate body 111 is fixedly installed through the plurality of fixing holes 1111.

[0032] Please see Figure 1 and Figure 2 As shown, in this embodiment, the glue cartridge assembly 12 includes a glue cartridge body 121, a first connector 122, and a cover 123. The glue cartridge body 121 is a hollow cavity, which is detachably mounted on the mounting cavity 112. The first connector 122 is connected to the bottom end of the glue cartridge body 121 and is connected to the dispensing assembly 14. The flexible glue in the glue cartridge body 121 enters the dispensing assembly 14 through the first connector 122. The cover 123 is detachably connected to the other end of the glue cartridge body 121 opposite to the first connector 122. By opening the cover 123, it is convenient to add flexible glue to the glue cartridge body 121. At the same time, it is convenient to pressurize the glue cartridge body 121 through the cover 123, thereby facilitating the flow of the flexible glue in the glue cartridge body 121 into the dispensing assembly 14. Specifically, the glue cartridge body 121 is made of transparent or semi-transparent material to facilitate observation of the condition of the flexible glue in the glue cartridge body 121. Preferably, the outer side of the glue cartridge body 121 is longitudinally provided with graduations to better observe the condition of the flexible glue in the glue cartridge body 121. An air connector 1231 is provided through the cap 123 to facilitate the injection of gas into the glue cartridge body 121, thereby increasing the air pressure inside the glue cartridge body 121.

[0033] Please see Figure 1 and Figure 2 As shown, in this embodiment, the lifting drive device 13 is a lifting cylinder; the dispensing assembly 14 includes a lifting plate 141, a connecting cavity 142, multiple dispensing heads 143, and a connecting pipe 144; the lifting plate 141 is longitudinally connected to the lifting drive device 13, and the lifting drive device 13 drives the lifting plate 141 to move linearly in the longitudinal direction; the connecting cavity 142 is a hollow cavity, which is detachably and fixedly connected to the lifting plate 141, and the connecting cavity 142 can accommodate flexible adhesive; the lifting drive device 13 is driven by the lifting plate 141. The connecting cavity 142 moves linearly in the longitudinal direction; multiple dispensing heads 143 are evenly connected and arranged below the connecting cavity 142, and dispensing operations are performed on the edge of the battery cell 20 through the multiple dispensing heads 143; one end of the connecting tube 144 is connected to the first connecting head 122, and the other end is connected to the connecting cavity 142. The flexible adhesive in the glue tube body 121 enters the connecting cavity 142 sequentially through the first connecting head 122 and the connecting tube 144, and then performs synchronous dispensing operations on the edge of the battery cell 20 through the multiple dispensing heads 143. Specifically, a second connecting head 1421 is connected to the connecting cavity 142, and both ends of the connecting tube 144 are connected to the first connecting head 122 and the second connecting head 1421, respectively.

[0034] The present invention provides a series connection machine for negative-pitch battery strings, which includes a battery cell gluing device, and the battery cell gluing device includes a dispensing mechanism 10 as described above.

[0035] It also includes a welding strip feeding device, a cell conveying device, a cell handling device, a welding strip laying device, and a cell welding strip series connection device;

[0036] The device includes a cell coating unit that applies adhesive to the cells; a cell conveying unit that transports the coated cells; a cell handling unit that transports the coated cells from the output of the cell conveying unit to the input of the cell welding strip series connection unit; a welding strip feeding unit that places welding strip rolls to provide the welding strips required for cell string welding; and a welding strip laying unit that lays welding strips of a predetermined length onto the coated cells at the input of the cell welding strip series connection unit.

[0037] It should be noted that the specific working process of the dispensing mechanism and series connection machine for negative-pitch battery strings of this utility model is as follows: The lifting drive device 13 drives the connecting cavity 142 and multiple dispensing heads 143 to move downwards through the lifting plate 141 to directly above the edge of the battery cell 20 to be dispensed after the soldered adhesive dots have been printed. At the same time, air is supplied and pressurized to the glue cylinder body 121 through the air connector 1231, and the flexible glue in the glue cylinder body 121 enters the connecting cavity 142 through the first connector 122 and the connecting pipe 144. Then, multiple dispensing heads 143 perform synchronous dispensing operations at the edge of the battery cell 20. The size and height of the supporting adhesive dots 21 are adjusted by the orifice shape of the dispensing head 143 and the dispensing time. After the completed solar cell 20 is precisely aligned, the pick-and-place arm transfers the glued solar cell 20 to the placement position of the solar cell welding ribbon series device. The solar cell welding ribbon series device moves one fixed step distance, and the pick-and-place arm then transfers another glued solar cell 20 to the placement position of the solar cell welding ribbon series device. The front end of the second solar cell 20 is stacked on the rear edge of the first solar cell 20, with an overlap of 0.4-0.6mm. Multiple support adhesive points 21 are located at the edge of the solar cell 20. The front end of the second solar cell 20 is stacked above the rear edge of the first solar cell 20, pressing on the multiple support adhesive points 21 at the rear end of the first solar cell 20. The multiple support adhesive points 21 play a role in buffering and bonding.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dispensing mechanism for negative-pitch battery strings, characterized in that, include: Support components; A rubber sleeve assembly, which is detachably and fixedly mounted on the support assembly; A lifting drive device is mounted on the support assembly; A dispensing assembly, which is longitudinally driven and connected to the lifting drive device and communicates with the glue cartridge assembly; The dispensing assembly includes a lifting plate, which is longitudinally driven and connected to the lifting drive device; and a connecting cavity detachably and fixedly connected to the lifting plate, which is a hollow cavity for holding flexible adhesive. Multiple dispensing heads are connected below the connecting cavity, and dispensing operations are performed on the edge of the battery cell through the multiple dispensing heads; a connecting tube is connected at both ends to the dispensing assembly and the connecting cavity respectively.

2. The dispensing mechanism for negative-pitch battery strings according to claim 1, characterized in that, The support assembly includes a fixed plate body and a mounting cavity fixedly disposed on the fixed plate body, wherein the rubber sleeve assembly is detachably disposed on the mounting cavity.

3. The dispensing mechanism for negative-pitch battery strings according to claim 2, characterized in that, The main body of the fixing plate has multiple fixing holes.

4. The dispensing mechanism for negative-pitch battery strings according to claim 2, characterized in that, The glue cartridge assembly includes a glue cartridge body detachably mounted on the mounting cavity. The glue cartridge body is a hollow cavity containing flexible glue. A first connector is connected to the glue cartridge body and communicates with the connecting pipe. A cover is detachably connected to the other end of the glue cartridge body opposite to the first connector.

5. A dispensing mechanism for negative-pitch battery strings according to claim 4, characterized in that, The main body of the rubber tube is made of transparent or semi-transparent material.

6. The dispensing mechanism for negative-pitch battery strings according to claim 5, characterized in that, The outer side of the rubber tube body is longitudinally marked with graduations.

7. A dispensing mechanism for negative-pitch battery strings according to claim 4, characterized in that, A gas connector is provided through the cover, through which gas is added to the main body of the rubber tube.

8. A dispensing mechanism for negative-pitch battery strings according to claim 4, characterized in that, A second connector is provided on the connecting cavity, and the two ends of the connecting tube are respectively connected to the first connector and the second connector.

9. A dispensing mechanism for negative-pitch battery strings according to claim 1, characterized in that, The lifting drive device uses a lifting cylinder.

10. A series connection machine for negative-pitch battery strings, characterized in that, The device includes a cell coating apparatus, wherein the cell coating apparatus includes the dispensing mechanism as described in any one of claims 1-9; It also includes a welding strip feeding device, a cell conveying device, a cell handling device, a welding strip laying device, and a cell welding strip series connection device; The solar cell coating device applies adhesive to the solar cells; the solar cell conveying device transports the coated solar cells; the solar cell handling device transports the coated solar cells from the output end of the solar cell conveying device to the input end of the solar cell welding strip series connection device; the welding strip feeding device places welding strip rolls to provide the welding strips required for solar cell string welding; and the welding strip laying device lays welding strips of a predetermined length onto the coated solar cells at the input end of the solar cell welding strip series connection device.

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