Welding conveying mechanism applied to main-grid-free battery piece and series connection machine

Abstract

The utility model discloses a welding transmission mechanism and a series machine applied to a main-grid-free battery piece, the welding transmission mechanism comprises a supporting assembly, a piece placing position, a piece preheating position, a piece curing position and a piece cooling and caching position are sequentially arranged on the supporting assembly, and negative pressure cavities are respectively arranged on the piece placing position, the piece preheating position and the piece cooling and caching position; the power driving assembly, the conveying belt assembly, the preheating UV lamp assembly, the curing UV lamp assembly and the vacuum generating device are arranged on the supporting assembly; the conveyor belt assembly is in transmission connection with the power driving assembly; the preheating UV lamp assembly and the curing UV lamp assembly are respectively arranged below the preheating sheet position and the curing sheet position; and the vacuum generating device is communicated with the plurality of negative pressure cavities respectively. According to the utility model, the preheating piece position and the preheating UV lamp assembly are matched to adsorb and preliminarily cure the battery piece and the welding strip, and then the curing UV lamp assembly is used to cure the battery piece and the welding strip, so that the electric energy generated by series connection of the battery piece and the welding strip is reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying mechanisms, and in particular to a welding conveying mechanism and a series connection machine applied to main grid-free battery sheets. Background Art

[0002] With the continuous development of solar photovoltaic, the number of grid lines of solar cells has become a hot topic, from the initial 2 grid lines to the current mainstream 5, 7, 9, 12 grid lines. Although the increase in the number of main grids increases the current collection capacity of the front of the cell, the more main grid lines there are, the more serious the shading of the front of the cell will be, which will cause power loss. At the same time, the more main grid lines there are, the higher the production cost of welding equipment will be. The busbar-free system takes into account the problem of multiple main grids, because the busbar-free system reduces shading and increases the current collection capacity. At the same time, the use cost of silver paste can be greatly reduced by using conductive glue instead of silver main grid, and it has the characteristics of simple equipment and strong stability. However, in order to prevent the offset between the cell and the welding strip, the existing busbar-free cell glue connection series machine will be provided with an adsorption chamber under the conveyor belt, so that the curing UV lamp can only be set under the adsorption chamber, so that the curing UV lamp is far away from the cell and the welding strip, and more electric energy is required for the curing operation; therefore, a welding conveying mechanism and series machine applied to busbar-free cells are provided to solve the above problems. Utility Model Content

[0003] One of the purposes of the utility model is to provide a welding conveying mechanism and a series connection machine for battery cells without main grid, so as to solve the problem that the existing battery cell series connection machine consumes more energy in the process of connecting battery cells and welding strips in series.

[0004] The utility model can realize a welding transmission mechanism and a series connection machine for a main grid-free battery cell by the following technical scheme:

[0005] The utility model discloses a welding conveying mechanism for main-grid-free solar cells, comprising: a support assembly, on which a cell placing position, a preheating position, a curing position and a cooling buffer position are sequentially arranged, and the cell placing position, the preheating position and the cooling buffer position are respectively provided with a negative pressure chamber; a power drive assembly, which is arranged on the support assembly; a conveyor belt assembly, which is arranged on the support assembly and is transmission-connected with the power drive assembly; a preheating UV lamp assembly, which is arranged on the support assembly and below the preheating position, and the preheating UV lamp assembly performs a pre-curing operation on the solar cells and solder strips passing thereover; a curing UV lamp assembly, which is arranged on the support assembly and below the curing position, and the curing UV lamp assembly performs a curing operation on the solar cells and solder strips passing thereover; and a vacuum generating device, which is arranged on the support assembly and is respectively connected to a plurality of the negative pressure chambers.

[0006] In one embodiment, the cell placement position includes 4 first battery cell positions, wherein the first battery cell position No. 1 is the initial cell placement position; the first battery cell position No. 2 is the pressure needle fixture position; the first battery cell position No. 3 and the first battery cell position No. 4 are respectively the pressure needle fixture magnetic positions.

[0007] In one embodiment, the preheating position includes two second battery cell positions, and the preheating UV lamp assembly is fixedly arranged below the two second battery cell positions; the curing position includes four third battery cell positions, and the curing UV lamp assembly is fixedly arranged below the four third battery cell positions.

[0008] In one embodiment, the power drive assembly includes a mounting seat; a drive motor disposed on the mounting seat; and a reducer drivingly connected to the drive motor, which is drivingly connected to the conveyor belt assembly.

[0009] In one embodiment, the drive motor is a servo motor.

[0010] In one embodiment, the conveyor belt assembly includes an active roller and a driven roller respectively movably arranged on the support assembly, and the active roller is transmission-connected to the power drive assembly; a conveyor belt body arranged on the active roller and the driven roller, which is fitted on the support assembly; and a tensioning wheel mechanism arranged on the support assembly and connected to the conveyor belt body.

[0011] In one embodiment, a plurality of through holes are provided through the conveyor belt body, and a plurality of adsorption holes are provided through the negative pressure chamber on a side opposite to the conveyor belt body.

[0012] In one embodiment, a tail clamp assembly and a conveyor belt deviation correction sensor are also provided on the support assembly, and the conveyor belt deviation correction sensor is facing the conveyor belt assembly.

[0013] In one embodiment, the tail clamp assembly includes a fixed seat, which is fixedly arranged on the support assembly and arranged at the input end of the conveyor belt assembly; a clamping jaw driving device arranged on the fixed seat; and a welding strip clamping jaw mechanism movably arranged on the fixed seat and transmission connected to the clamping jaw driving device.

[0014] The utility model provides a series connection machine for non-busbar solar cells, comprising any of the above-mentioned welding transmission mechanisms;

[0015] It also includes a cell glue applying device, a cell feeding and conveying device, a solder tape feeding device, a solder tape laying device, a cell jig transporting device, a jig transporting device, a jig conveying device and a string discharging device;

[0016] Among them, the battery cell glue application device applies glue to the battery cell; the battery cell feeding and conveying device conveys the battery cells required for the battery string series connection; the solder strip feeding device places the solder strip roll to provide the solder strip required for the battery string series connection; the solder strip laying device lays the solder strip of a predetermined length on the battery cell at the input end of the welding conveying mechanism; the battery cell jig conveying device conveys the battery cell at the output end of the battery cell feeding and conveying device and the pressure needle jig at the output end of the jig conveying device to the input end of the welding conveying mechanism; the welding conveying mechanism conveys the battery cell, solder strip and the pressure needle jig pressed on the solder strip together and performs a curing operation on the battery cell and the solder strip; the jig conveying device conveys the pressure needle jig from the output end of the welding conveying mechanism to the input end of the jig conveying device; the jig conveying device conveys the reflowed pressure needle jig from the input end of the jig conveying device to its output end; the string output device performs string processing on the battery string obtained by the welding conveying mechanism solidification, and outputs a battery string of a predetermined length.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model discloses a welding conveying mechanism and a series connection machine for main-grid-free battery cells. A negative pressure chamber is arranged on a preheating position, and a preheating UV lamp assembly is arranged below the chamber. The conveyor belt assembly drives the battery cells and the welding strips to move while absorbing the battery cells and pre-curing the glue points between the battery cells and the welding strips, thereby effectively preventing the battery cells and the welding strips from being offset. Then, a curing UV lamp assembly is arranged below the curing position to cure the battery cells and the welding strips passing thereover. Since the glue points and the welding strips on the battery cells have been pre-cured in advance on the preheating position, the negative pressure chamber on the curing position can be eliminated, so that the curing UV lamp assembly moves up closer to the battery cells and the welding strips, thereby reducing the electric energy of the battery cells and the welding strips in series to a certain extent. At the same time, the above-mentioned design makes the welding strips and the battery cells fit more closely and the EL imaging effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a welding transmission mechanism for a main grid-less battery cell of the utility model;

[0021] Figure 2 yes Figure 1 The utility model is a schematic diagram of a cross-sectional structure of a welding transmission mechanism applied to a battery cell without a main grid;

[0022] Figure 3 yes Figure 1 The utility model is shown as an exploded structural schematic diagram of a welding transmission mechanism for a main grid-less battery cell, including a tail clamp assembly;

[0023] Figure 4 yes Figure 3 Schematic diagram of the structure of the tail clip assembly shown.

[0024] Indications in the figure: 10, welding transmission mechanism; 11, support assembly; 111, support frame; 112, negative pressure support mechanism; 1121, film placement position; 1122, preheating film position; 1123, curing film position; 1124, cooling cache film position; 1125, negative pressure chamber; 12, power drive assembly; 121, mounting seat; 122, drive motor; 123, reducer; 13, conveyor belt assembly; 131, active roller; 132, driven roller; 133, conveyor belt body; 1331, through hole; 134, tensioner mechanism; 14, preheating UV lamp assembly; 15, curing UV lamp assembly; 16, vacuum generating device; 17, tail clamp assembly; 171, fixing seat; 172, clamp driving device; 173, welding belt clamp mechanism; 18, conveyor belt deviation correction sensor. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 3As shown, the utility model is a welding conveying mechanism 10 for main grid-free solar cells, which mainly includes a support assembly 11, a power drive assembly 12, a conveyor belt assembly 13, a preheating UV lamp assembly 14, a curing UV lamp assembly 15, a vacuum generating device 16 and a tail clamp assembly 17; the support assembly 11 is a support body, which has a negative pressure adsorption function, so that the solar cells passing through it can be adsorbed to prevent the solar cells from being offset; the power drive assembly 12, the conveyor belt assembly 13, the preheating UV lamp assembly 14, the curing UV lamp assembly 15, the vacuum generating device 16 and the tail clamp assembly 17 are respectively arranged on the support assembly 11, The force driving assembly 12 drives the conveyor belt assembly 13 to move, thereby performing a conveying operation on the conveyor belt assembly 13; the preheating UV lamp assembly 14 performs a pre-curing operation on the battery cell and the solder strip passing over it, so that the solder strip and the battery cell are initially glued and fixed, thereby preventing the two from offsetting; the curing UV lamp assembly 15 is arranged at the relatively rear end of the preheating UV lamp assembly 14, and performs a curing operation on the battery cell and the solder strip passing over it; the vacuum generating device 16 is connected to the support assembly 11, and provides negative pressure to the support assembly 11; the tail clamp assembly 17 is arranged at one end of the support assembly 11, and can clamp the solder strip. In this embodiment, a conveyor belt deviation correction sensor 18 is arranged on the side of the support assembly 11, which is opposite to the conveyor belt assembly 13, and the conveyor belt deviation correction sensor 18 performs real-time deviation correction monitoring operations on the conveyor belt body 133 in the conveyor belt assembly 13.

[0028] See also Figure 1-Figure 3As shown, in this embodiment, the support assembly 11 includes a support frame 111 and a negative pressure support mechanism 112; the support frame 111 is a support body; the negative pressure support mechanism 112 is arranged on the support frame 111, and it can perform adsorption operation on the battery cell passing thereover. Specifically, the negative pressure support mechanism 112 includes a film placement position 1121, a preheating position 1122, a curing position 1123 and a cooling cache position 1124 which are arranged in sequence; the film placement position 1121, the preheating position 1122 and the cooling cache position 1124 are all provided with a negative pressure cavity 1125, which is penetrated by a plurality of adsorption holes and is connected to a vacuum generating device 16, and the battery cells passing therethrough are adsorbed through the plurality of adsorption holes; the preheating UV lamp assembly 14 is fixedly arranged below the negative pressure cavity 1125 on the preheating position 1122; the curing UV lamp assembly 15 is fixedly arranged below the curing position 1123, and its position in the support assembly 11 is closer to the position of the battery cells than the preheating UV lamp assembly 14, thereby being able to reduce the electric energy consumed in the UV curing process to a certain extent; the cooling cache position 1124 cools the battery cells passing therethrough and transmits them to the next station. Specifically, the placement position 1121 includes 4 first battery cell positions, the first battery cell position No. 1 is the initial placement position for the battery cell, the first battery cell position No. 2 is the pressure needle fixture position, the first battery cell position No. 3 and the first battery cell position No. 4 are respectively the pressure needle fixture magnetic suction positions, through which the downward magnetic suction force is applied to the pressure needle fixture to make the battery cell and the solder strip fit better; the preheating position 1122 includes 2 second battery cell positions, the preheating UV lamp assembly 14 is fixedly arranged below the two second battery cell positions, and the preheating UV lamp assembly 14 is used to perform preliminary gluing and fixing operations on the battery cells and solder strips passing through the two second battery cell positions; the curing position 1123 includes 4 third battery cell positions, the curing UV lamp assembly 15 is fixedly arranged below the four third battery cell positions, and the curing UV lamp assembly 15 is used to perform curing operations on the battery cells and solder strips passing through the four third battery cell positions.

[0029] See also Figure 1-Figure 3 As shown, in this embodiment, the power drive assembly 12 includes a mounting seat 121, a drive motor 122 and a reducer 123; the drive motor 122 is arranged on the mounting seat 121; one end of the reducer 123 is connected to the drive motor 122, which reduces the speed of the drive motor 122 and increases the output torque; the other end of the reducer 123 is connected to the conveyor belt assembly 13, which drives the conveyor belt assembly 13 to move on the support assembly 11, thereby realizing the transmission operation of the battery cell, welding strip and pressure needle fixture arranged thereon. Specifically, the drive motor 122 adopts a servo motor, so as to ensure the precise transmission operation of the conveyor belt assembly 13.

[0030] See also Figure 1-Figure 3As shown, in this embodiment, the conveyor belt assembly 13 includes an active roller 131, a driven roller 132, a conveyor belt body 133 and a tensioning wheel mechanism 134; the active roller 131 and the driven roller 132 are respectively movably arranged at both ends of the support assembly 11 along the conveying direction, and the active roller 131 is transmission-connected with the power drive assembly 12; the conveyor belt body 133 is arranged on the active roller 131 and the driven roller 132 and is attached to the support assembly 11, and the power drive assembly 12 drives the active roller 131 to drive the conveyor belt body 133 to move on the support assembly 11, so that the battery cells are sequentially conveyed at the placing position 1121, the preheating position 1122, the curing position 1123 and the cooling cache position 1124; the tensioning wheel mechanism 134 is arranged on the support assembly 11 and connected to the conveyor belt body 133, which performs a tensioning operation on the conveyor belt body 133 and facilitates the disassembly operation of the conveyor belt body 133. Specifically, a plurality of through holes 1331 are provided through the conveyor belt body 133, so as to facilitate the negative pressure chamber 1125 to adsorb the battery cells arranged on the conveyor belt body 133 through the adsorption holes and the through holes 1331 in sequence; the tensioning wheel mechanism 134 includes a tensioning roller and a telescopic cylinder connected to each other, and the telescopic cylinder drives the tensioning roller to move, thereby realizing the tensioning operation of the conveyor belt body 133.

[0031] See also Figure 2 and Figure 3 As shown, in this embodiment, the preheating UV lamp assembly 14 and the curing UV lamp assembly 15 both include a plurality of UV lamps, and the plurality of UV lamps are used to perform pre-curing or curing operations on the battery cells and solder strips passing thereover.

[0032] See also Figure 1-Figure 4 As shown, in this embodiment, the tail clamp assembly 17 includes a fixed seat 171, a clamping jaw driving device 172 and a welding strip clamping jaw mechanism 173; the fixed seat 171 is fixedly arranged on the support assembly 11 and arranged at the input end of the conveyor belt assembly 13; the clamping jaw driving device 172 is arranged on the fixed seat 171; the welding strip clamping jaw mechanism 173 is movably arranged on the fixed seat 171 and is in transmission connection with the clamping jaw driving device 172, and the clamping jaw driving device 172 drives the welding strip clamping jaw mechanism 173 to move, thereby realizing the tightening or loosening operation of the welding strip. Specifically, the clamping jaw driving device 172 adopts a telescopic cylinder, and the welding strip clamping jaw mechanism 173 adopts the existing technology, so its specific structure and working process are not described here, as long as it meets the requirements of this application.

[0033] The utility model provides a series connection machine for non-busbar solar cells, comprising any one of the above-mentioned welding transmission mechanisms 10;

[0034] It also includes a cell glue applying device, a cell feeding and conveying device, a solder tape feeding device, a solder tape laying device, a cell jig transporting device, a jig transporting device, a jig conveying device and a string discharging device;

[0035] Among them, the cell glue applying device applies glue to the cell; the cell feeding and conveying device conveys the cell required for the series connection of the cell string; the solder strip feeding device places the solder strip roll to provide the solder strip required for the series connection of the cell string; the solder strip laying device lays the solder strip of a predetermined length on the cell at the input end of the welding conveying mechanism 10; the cell jig conveying device conveys the cell at the output end of the cell feeding and conveying device and the pressure needle jig at the output end of the jig conveying device to the input end of the welding conveying mechanism 10; the welding conveying mechanism 10 conveys the cell, the solder strip and the pressure needle jig pressed on the solder strip together and performs a curing operation on the cell and the solder strip; the jig conveying device conveys the pressure needle jig from the output end of the welding conveying mechanism 10 to the input end of the jig conveying device; the jig conveying device conveys the reflowed pressure needle jig from the input end of the jig conveying device to its output end; the string output device performs string processing on the cell string obtained by curing the welding conveying mechanism 10, and outputs a cell string of a predetermined length.

[0036] It should be noted that the specific working process of the utility model for a welding conveyor mechanism and a series machine for a main grid-free battery cell is as follows: the power drive component 12 drives the conveyor belt component 13 to move, thereby driving the battery cell, the welding ribbon and the pressing needle fixture pressed on the welding ribbon set on the conveyor belt component 13 to move on the placing position 1121, the preheating position 1122, the curing position 1123 and the cooling buffer position 1124 in sequence. When the battery cell and the welding ribbon move to the top of the preheating position 1122, the preheating UV lamp component 14 is used to heat the battery cell and the welding ribbon. The battery cells and solder strips above them are pre-cured so that the solder strips and the battery cells are initially glued and fixed, thereby preventing them from offsetting each other; when the battery cells and solder strips move to above the curing position 1123, the battery cells and solder strips passing above them are cured by the curing UV lamp assembly 15. Since the curing position 1123 is not provided with a negative pressure chamber 1125, the curing UV lamp assembly 15 is close to the battery cells and solder strips above them, thereby reducing the electric energy consumed in the UV curing process to a certain extent.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A welding transmission mechanism for a busbar-less cell, characterized in that: include: A support assembly, on which a film placing position, a film preheating position, a film curing position and a film cooling and caching position are sequentially arranged, and the film placing position, the film preheating position and the film cooling and caching position are respectively provided with a negative pressure chamber; A power drive assembly, which is arranged on the support assembly; A conveyor belt assembly, which is arranged on the support assembly and is drivingly connected to the power drive assembly; A preheating UV lamp assembly is arranged on the support assembly and below the preheating sheet position, and the preheating UV lamp assembly passes through the battery sheet and the solder strip above it to perform a pre-curing operation; A curing UV lamp assembly is arranged on the supporting assembly and below the curing sheet position, and the curing UV lamp assembly performs a curing operation on the battery sheet and the soldering ribbon passing thereover; A vacuum generating device is arranged on the supporting assembly and is connected to the plurality of negative pressure chambers respectively.

2. A welding transmission mechanism for a busbar-less cell according to claim 1, characterized in that: The cell placement positions include four first cell positions, wherein the first cell position No. 1 is the initial cell placement position; the first cell position No. 2 is the pressure pin fixture placement position; the first cell position No. 3 and the first cell position No. 4 are the pressure pin fixture magnetic absorption positions respectively.

3. The welding transmission mechanism for non-busbar solar cells according to claim 2 is characterized in that: The preheating position includes two second battery positions, and the preheating UV lamp assembly is fixedly arranged below the two second battery positions; the curing position includes four third battery positions, and the curing UV lamp assembly is fixedly arranged below the four third battery positions.

4. The welding transmission mechanism for non-busbar solar cells according to claim 1, characterized in that: The power drive assembly includes a mounting seat; a drive motor disposed on the mounting seat; and a reducer drivingly connected to the drive motor, which is drivingly connected to the conveyor belt assembly.

5. The welding transmission mechanism for non-busbar solar cells according to claim 4, characterized in that: The driving motor is a servo motor.

6. The welding transmission mechanism for non-busbar solar cells according to claim 1, characterized in that: The conveyor belt assembly includes an active roller and a driven roller respectively movably arranged on the support assembly, and the active roller is transmission-connected to the power drive assembly; a conveyor belt body arranged on the active roller and the driven roller, which is fitted on the support assembly; and a tensioning wheel mechanism arranged on the support assembly and connected to the conveyor belt body.

7. The welding transmission mechanism for non-busbar solar cells according to claim 6, characterized in that: The conveyor belt body is provided with a plurality of through holes, and the negative pressure chamber is provided with a plurality of adsorption holes on a side opposite to the conveyor belt body.

8. The welding transmission mechanism for non-busbar solar cells according to claim 1, characterized in that: The support assembly is also provided with a tail clamp assembly and a conveyor belt deviation correction sensor, and the conveyor belt deviation correction sensor is facing the conveyor belt assembly.

9. The welding transmission mechanism for non-busbar solar cells according to claim 8, characterized in that: The tail clamp assembly includes a fixed seat, which is fixedly arranged on the support assembly and arranged at the input end of the conveyor belt assembly; a clamping claw driving device arranged on the fixed seat; and a welding strip clamping claw mechanism movably arranged on the fixed seat and transmission-connected to the clamping claw driving device.

10. A series connection machine for busbar-free solar cells, characterized in that: The welding transmission mechanism comprising any one of claims 1 to 9; It also includes a cell glue applying device, a cell feeding and conveying device, a solder tape feeding device, a solder tape laying device, a cell jig transporting device, a jig transporting device, a jig conveying device and a string discharging device; Among them, the battery cell glue application device applies glue to the battery cell; the battery cell feeding and conveying device conveys the battery cells required for the battery string series connection; the solder strip feeding device places the solder strip roll to provide the solder strip required for the battery string series connection; the solder strip laying device lays the solder strip of a predetermined length on the battery cell at the input end of the welding conveying mechanism; the battery cell jig conveying device conveys the battery cell at the output end of the battery cell feeding and conveying device and the pressure needle jig at the output end of the jig conveying device to the input end of the welding conveying mechanism; the welding conveying mechanism conveys the battery cell, solder strip and the pressure needle jig pressed on the solder strip together and performs a curing operation on the battery cell and the solder strip; the jig conveying device conveys the pressure needle jig from the output end of the welding conveying mechanism to the input end of the jig conveying device; the jig conveying device conveys the reflowed pressure needle jig from the input end of the jig conveying device to its output end; the string output device performs string processing on the battery string obtained by the welding conveying mechanism solidification, and outputs a battery string of a predetermined length.

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