Welding module of photovoltaic module battery string
By setting up load transfer components and welding components in the welding module of the photovoltaic module cell string, the bus bars are welded on the welding head, which solves the problems of bus bar shaking and component interference, and achieves the stability of the welding process and space utilization efficiency.
Patent Information
- Application Number
- CN202421766827.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the welding process of photovoltaic module cell strings, the bus bar is prone to shaking due to the soft nature of the thimble device, resulting in unstable welding, and the welding assembly and the transfer assembly may interfere during the movement.
A welding module for cell strings of photovoltaic modules is designed. By setting up a transfer assembly and a welding assembly, the bus bar is placed on the welding head, the thimble is located on the welding head, and the thimble moves downward to weld the bus bar and the battery string together, ensuring the stability of the welding process and making full use of the space of the device.
Smooth welding of bus bars is achieved, preventing shaking, improving the stability of the welding process, and avoiding interference between welding components and transport components during movement.
Smart Images
Figure CN222826395U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of battery string welding, and more specifically relates to a welding module for a photovoltaic component battery string. Background Art
[0002] In the production of photovoltaic silicon cells, several relatively small unit cells are first arranged into cell strings, and then several cell strings are arranged in columns to form rectangular sheets, thereby producing larger solar panels.
[0003] In the existing battery string welding process, the busbar is usually set on the ejector device, and then the welding head device abuts the ejector device for welding. However, since the ejector device is relatively soft, the busbar, which is also relatively soft, is placed on the upper side thereof, which is prone to shaking during welding, resulting in an unstable welding process. Summary of the invention
[0004] The technical problem to be solved by the utility model is to provide a welding module for a photovoltaic module battery string, which can achieve smooth welding of the busbar and prevent the busbar from shaking during the welding process, while fully utilizing the space of the device to avoid interference between the welding assembly and the transfer assembly during the movement process.
[0005] The utility model discloses a welding module for a photovoltaic module battery string, wherein the battery string is composed of a plurality of arranged battery cells. The utility model includes a transfer assembly and a welding assembly. The transfer assembly includes a plurality of material plates arranged front and back to form a bearing surface. A plurality of battery strings are placed on the bearing surface at intervals. The welding assembly is arranged on the left and right sides of the battery string. The welding assembly includes a welding head assembly and an ejector assembly. The welding head assembly is located at the lower side of the battery string, and the abutting surface between the welding head assembly and the battery string is a rigid plane. The ejector assembly is located at the upper side of the battery string and corresponds to the welding head assembly.
[0006] As a further improvement of the utility model, the transfer assembly also includes a translation motor and a transfer plate. The material plates are fixedly arranged on the upper side of the transfer plate. The translation motor is fixedly arranged on the frame, and the output end of the translation motor is connected to the transfer plate to drive the material plate to move in a stepping manner. The material plate receives the battery strings one by one in sequence. The transfer assembly is symmetrically arranged on the frame. The material plates on the left and right sides are aligned so that the battery strings on the left and right sides are located on the same straight line, and the material plates on the left and right sides move forward at the same time.
[0007] As a further improvement of the utility model, the welding head assembly includes a welding head, and the ejector assembly includes an ejector. The welding head assembly is arranged on a movable guide rail, and the welding head assembly is slidably connected to the movable guide rail. The ejector assembly is connected to the output end of the peripheral drive motor so that the welding head and the ejector move up and down correspondingly.
[0008] As a further improvement of the utility model, the welding head includes a left welding head, a middle welding head and a right welding head. The ejector includes a left ejector, a middle ejector and a right ejector. During welding, the left welding head and the left ejector are located at the left edge of the battery string on the left, the middle welding head and the middle ejector are located in the middle of the left and right battery strings, and the right welding head and the right ejector are located at the right edge of the battery string on the right.
[0009] As a further improvement of the present invention, the middle welding head and the right welding head are initially located at the same side to facilitate the placement of the busbar. When welding, the middle welding head moves to the middle of the left and right battery strings.
[0010] As a further improvement of the present invention, the middle welding head and the left welding head are initially located at the same side to facilitate the placement of the busbar. When welding, the middle welding head moves to the middle of the left and right battery strings.
[0011] As a further improvement of the utility model, the welded battery strings include at least two groups of battery strings with the same number on the left and right. The busbar welded on the side of each group of battery strings is connected to at least two adjacent battery strings of the group. The busbar welded between the two groups is connected to at least two corresponding groups of three battery strings.
[0012] As a further improvement of the utility model, the translation motor is a stepping motor.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] By setting up a transfer assembly and a welding assembly, the busbar is placed on the welding head, the ejector is located on the welding head, and the ejector moves downward to weld the busbar and the battery string together. This can achieve smooth welding of the busbar and prevent the busbar from shaking during the welding process. At the same time, the space of the device is fully utilized to avoid interference between the welding assembly and the transfer assembly during the movement. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a top view of the utility model;
[0017] Figure 3 It is a structural schematic diagram of the transfer assembly of the utility model;
[0018] Figure 4 It is a structural schematic diagram of the welding head assembly of the utility model;
[0019] Figure 5 Schematic diagram of the completed battery string welding.
[0020] Description of the numbers in the figure:
[0021] Transfer assembly 1, material plate 11, translation motor 12, transfer plate 13, welding head assembly 2, left welding head 21, middle welding head 22, right welding head 23, moving guide rail 24, ejector assembly 3, left ejector 31, middle ejector 32, right ejector 33, battery string 4. DETAILED DESCRIPTION
[0022] Specific embodiment 1: Please refer to Figure 1-Figure 5 A welding module for a photovoltaic module battery string, wherein the battery string 4 is composed of a plurality of battery cells arranged in an array. It includes a transfer assembly 1 and a welding assembly. The transfer assembly 1 includes a plurality of material plates 11 arranged in a front-to-back manner to form a bearing surface, and a plurality of battery strings 4 are placed on the bearing surface at intervals. A welding head assembly 2 is located at the lower side of the battery string 4, and the contact surface between the welding head assembly 2 and the battery string 4 is a rigid plane. A pin assembly 3 is located at the upper side of the battery string 4 and corresponds to the welding head assembly 2.
[0023] In this embodiment, the number of battery strings 4 located on the transfer assembly 1 in one welding is 6.
[0024] The transfer assembly 1 also includes a translation motor 12 and a transfer plate 13. The material plates 11 are all fixedly arranged on the upper side of the transfer plate 13. The translation motor 12 is fixedly arranged on the frame, and the output end of the translation motor 12 is connected to the transfer plate 13 to drive the material plates 11 to move in a stepping manner. The material plates 11 receive the battery strings 4 one by one in sequence and move forward. In the present embodiment, the transfer assembly 1 is symmetrically arranged on the frame, including two groups of transfer assemblies 1. In the present embodiment, the translation motor 12 is a stepping motor. The material plates 11 on the left and right sides are aligned so that the battery strings 4 on the left and right sides are located on the same straight line, and the material plates 11 on the left and right sides move forward at the same time.
[0025] The welding assembly includes a welding head assembly 2 and an ejector assembly 3. The welding head assembly 2 is arranged on the lower side of the transfer plate 13, and the ejector assembly 3 is arranged on the upper side of the transfer plate 13. The welding head assembly 2 includes a welding head, and the ejector assembly 3 includes an ejector. The welding head assembly 2 is arranged on a movable guide rail 24, and the welding head assembly 2 is slidably connected to the movable guide rail 24. The ejector assembly 3 is connected to the output end of the external drive motor so that the welding head and the ejector move up and down correspondingly.
[0026] The welding heads include a left welding head 21, a middle welding head 22 and a right welding head 23. The ejector pins include a left ejector pin 31, a middle ejector pin 32 and a right ejector pin 33. During welding, the left welding head 21 and the left ejector pin 31 are located at the left edge of the battery string 4 on the left, the middle welding head 22 and the middle ejector pin 32 are located in the middle of the left and right battery strings 4, and the right welding head 23 and the right ejector pin 33 are located at the right edge of the battery string 4 on the right.
[0027] The bus bar is placed on the welding head, and the bus bar is located at the lower side of the battery string 4 during welding.
[0028] This is different from the prior art where the welding head is located on the upper side and the ejector pin is located on the lower side. Since the ejector pin is relatively soft in texture and the welding head is a rigid component, it is harder than the ejector pin. It is more stable to place the bus bar on the welding head for welding. At the same time, the ejector pin is located on the upper side for easy movement, and is not prone to interference with other equipment, thus making full use of the equipment space.
[0029] The middle welding head 22 and the right welding head 23 are initially located at the same side; or the middle welding head 22 and the left welding head 21 are initially located at the same side; so as to facilitate the placement of the busbar. When welding, the middle welding head 22 moves to the middle of the left and right battery strings 4.
[0030] The welded battery strings 4 include at least two groups of battery strings 4 with the same number on the left and right; the bus bar welded on the side of each group of battery strings 4 connects at least two adjacent battery strings 4 in the group; the bus bar welded between the two groups connects at least two corresponding groups of three battery strings 4.
[0031] like Figure 5 As shown, in this embodiment, the battery strings 4 on the left and right sides are welded once for every two strings, for a total of three times; the middle parts of the two groups of battery strings 4 are welded once for every three strings, for a total of two times. Under the premise of ensuring a certain strength, the busbar material required for welding is reduced.
[0032] When the battery strings 4 carried by all the material plates 11 are processed, the material plates 11 located on the outermost side return to the initial position.
[0033] Working principle:
[0034] Starting from the first plate 11 of the transfer component 1, the battery strings 4 are placed on the plate 11 one by one, the plates 11 on the left and right sides are aligned and moved forward at the same time for welding, the bus bars are placed on the welding heads, and the left welding head 21 and the right welding head 23 on the left and right sides respectively weld every two battery strings 4 on the left and right sides, for a total of 3 times; at the same time, the middle welding head 22 moves toward the middle, and welds every three strings in the middle part of the two groups of battery strings 4, for a total of 2 times; the welding head and the ejector pin move up and down in correspondence to perform welding; after welding is completed, the welded battery panel is taken out, and the transfer component 1 returns to its initial position.
Claims
1. A welding module for a photovoltaic module battery string, wherein the battery string (4) is composed of a plurality of battery cells arranged in an array; characterized in that: The invention comprises a transfer assembly (1) and a welding assembly; the transfer assembly (1) comprises a plurality of material plates (11) arranged in a front-to-rear arrangement to form a bearing surface; a plurality of battery strings (4) are placed on the bearing surface at intervals; the welding assembly is arranged on the left and right sides of the battery string (4); the welding assembly comprises a welding head assembly (2) and an ejector assembly (3); the welding head assembly (2) is located at the lower side of the battery string (4), and the abutting surface between the welding head assembly (2) and the battery string (4) is a rigid plane; the ejector assembly (3) is located at the upper side of the battery string (4) and corresponds to the welding head assembly (2).
2. A welding module for a photovoltaic module cell string according to claim 1, characterized in that: The transfer assembly (1) further comprises a translation motor (12) and a transfer plate (13); the material plates (11) are fixedly arranged on the upper side of the transfer plate (13); the translation motor (12) is fixedly arranged on the frame, and the output end of the translation motor (12) is connected to the transfer plate (13) to drive the material plates (11) to move in a stepping manner; the material plates (11) receive the battery strings (4) one by one in sequence; the transfer assembly (1) is symmetrically arranged on the frame; the material plates (11) on the left and right sides are aligned so that the battery strings (4) on the left and right sides are located on the same straight line, and the material plates (11) on the left and right sides move forward at the same time.
3. A welding module for a photovoltaic module cell string according to claim 2, characterized in that: The welding head assembly (2) comprises a welding head, and the ejector pin assembly (3) comprises an ejector pin; the welding head assembly (2) is arranged on a movable guide rail (24), and the welding head assembly (2) is slidably connected to the movable guide rail (24); and the ejector pin assembly (3) is connected to an output end of an external drive motor so that the welding head and the ejector pin move up and down in correspondence.
4. A welding module for a photovoltaic module cell string according to claim 3, characterized in that: The welding heads include a left welding head (21), a middle welding head (22) and a right welding head (23); the ejector pins include a left ejector pin (31), a middle ejector pin (32) and a right ejector pin (33); during welding, the left welding head (21) and the left ejector pin (31) are located at the left edge of the battery string (4) on the left, the middle welding head (22) and the middle ejector pin (32) are located in the middle of the left and right battery strings (4), and the right welding head (23) and the right ejector pin (33) are located at the right edge of the battery string (4) on the right.
5. A welding module for a photovoltaic module cell string according to claim 4, characterized in that: The middle welding head (22) and the right welding head (23) are initially located on the same side to facilitate the placement of the busbar; when welding, the middle welding head (22) moves toward the middle of the left and right battery strings (4).
6. A welding module for a photovoltaic module cell string according to claim 4, characterized in that: The middle welding head (22) and the left welding head (21) are initially located on the same side to facilitate the placement of the busbar; when welding, the middle welding head (22) moves toward the middle of the left and right battery strings (4).
7. A welding module for a photovoltaic module cell string according to claim 4, characterized in that: The welded battery strings (4) include at least two left and right groups of battery strings (4) of the same number; a bus bar welded to the side of each group of battery strings (4) is connected to at least two adjacent battery strings (4) of the group; and a bus bar welded between the two groups is connected to at least two corresponding groups of three battery strings (4).
8. The welding module of a photovoltaic module cell string according to claim 2, characterized in that: The translation motor (12) is a stepping motor.