Solder strip compensation structure and series welding machine device

Abstract

The utility model discloses a solder strip compensation structure and a series welding machine device, and relates to the technical field of series welding machines, the solder strip compensation structure comprises an operation frame, a pressing table and a compensation structure, the pressing table is arranged on the operation frame, and the pressing table is provided with an operation table top used for placing a solder strip; the compensation structure comprises at least one extrusion part, and the extrusion part is arranged above the operation table top. According to the technical scheme provided by the utility model, the welding strip can be placed on the operation table surface for operation by arranging the pressing table, the welding strip can be extruded by utilizing the extrusion part by arranging the extrusion part, and the welding strip which is originally positioned on a straight surface is extruded and deformed, so that the compensation effect on the welding strip is realized, namely, the welding strip can be subjected to the welding operation by utilizing the extrusion part. The distance between the welding strips of the two adjacent welding spots is longer than the distance between the welding strips which are originally located on the straight face, the contraction amount of the welding strips after welding is compensated, and the warping effect caused by contraction of the welding strips after welding of the battery piece is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of string welding machines, in particular to a welding strip compensation structure and a string welding machine device. Background Art

[0002] The entire process of the string welding machine is mainly composed of the welding ribbon moving process, the battery string process, the loading process, and the tooling cycle process. In the welding ribbon moving process, when welding the battery cells, since the grid lines of the battery cells are all on the non-light-receiving side (back side), in the existing technology, the welding ribbons are interconnected and then welded at high temperature to weld the battery cells into battery strings. After the battery string leaves the welding area, due to the decrease in temperature, the linear expansion coefficient of the welding ribbon is greater than the linear expansion coefficient of the battery cell, and the expansion length of the welding ribbon is greater than the expansion length of the battery cell. Moreover, the welding ribbon is not like a conventional battery cell where half is on the front side of the battery cell and half is on the back side of the battery cell, which can form a better balance, causing the battery cell to be extremely easy to warp, affecting its use. Utility Model Content

[0003] The main purpose of the utility model is to provide a welding strip compensation structure and a string welding device, aiming to achieve the compensation effect of the welding strip.

[0004] To achieve the above-mentioned purpose, the present invention proposes a welding strip compensation structure for welding strips, comprising:

[0005] operating frame;

[0006] A press table, provided on the operating frame, having an operating table surface for placing the welding ribbon; and

[0007] The compensation structure includes at least one extrusion portion, which is arranged above the operating table and connected to the operating frame to perform extrusion compensation toward the welding strip.

[0008] In one embodiment, the extrusion portion includes a pressing plate and a column;

[0009] One end of the column along the axis direction is connected to the pressure plate, and the other end is passed through the outside of the operating frame. The end of the pressure plate away from the column is pressed against the operating table.

[0010] In one embodiment, the welding ribbon compensation structure further includes a driving portion;

[0011] The driving part includes a cylinder for driving the extrusion part to move.

[0012] In one embodiment, the welding strip compensation structure further includes a connecting plate, and the connecting plate is provided between the column and the cylinder.

[0013] In one embodiment, the welding strip compensation structure further includes a buffer portion;

[0014] The buffer part includes a sleeve and a buffer spring. The sleeve is sleeved on the outer peripheral wall of the column, and one end of the sleeve along its axial direction passes through the interior of the connecting plate. The buffer spring is sleeved on the outer peripheral wall of the column, and both ends of the buffer spring are respectively fixed to the end of the sleeve away from the connecting plate and the end of the pressure plate close to the column.

[0015] In one embodiment, the operating frame is detachably connected to the pressing platform.

[0016] In one embodiment, a plurality of grooves are formed on the operating table, and the grooves are continuously arranged along the first direction.

[0017] In one embodiment, a plurality of protrusions are provided at one end of the pressing plate close to the operating table, and each of the protrusions is matched with each of the grooves.

[0018] In one embodiment, the groove is arc-shaped.

[0019] The utility model also provides a string welding device, which includes the above-mentioned welding strip compensation structure.

[0020] The technical solution of the present invention is to place the soldering ribbon on the operating table for operation by providing the pressing platform, and to utilize the extrusion portion to extrude the soldering ribbon, so as to deform the soldering ribbon originally on the straight surface, so as to achieve compensation for the soldering ribbon, that is, the distance between the soldering ribbons of two adjacent soldering points is longer than that between the soldering points originally on the straight surface, and the shrinkage of the soldering ribbon after welding is compensated by the growth, thereby effectively reducing the warping effect caused by the shrinkage of the soldering ribbon after welding of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of an embodiment of the welding strip compensation structure provided by the utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 3 This is a schematic diagram of the installation position of the welding strip compensation structure provided by the utility model.

[0025] Description of Figure Numbers:

[0026] 100. Welding strip compensation structure; 1. Operating frame; 2. Pressing platform; 21. Operating table; 211. Groove; 3. Compensating structure; 31. Extrusion part; 311. Pressing plate; 3111. Protrusion; 312. Column; 32. Driving part; 321. Cylinder; 33. Connecting plate; 34. Buffer part; 341. Sleeve; 342. Buffer spring.

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0031] The entire process of the string welding machine is mainly composed of the welding ribbon moving process, the battery string process, the loading process, and the tooling cycle process. In the welding ribbon moving process, when welding the battery cells, since the grid lines of the battery cells are all on the non-light-receiving side (back side), in the existing technology, the welding ribbons are interconnected and then welded at high temperature to weld the battery cells into battery strings. After the battery string leaves the welding area, due to the decrease in temperature, the linear expansion coefficient of the welding ribbon is greater than the linear expansion coefficient of the battery cell, and the expansion length of the welding ribbon is greater than the expansion length of the battery cell. Moreover, the welding ribbon is not like a conventional battery cell where half is on the front side of the battery cell and half is on the back side of the battery cell, which can form a better balance, causing the battery cell to be extremely easy to warp, affecting its use.

[0032] The utility model provides a welding strip compensation structure, which aims to achieve the compensation effect of the welding strip.

[0033] See also Figures 1 to 3 In one embodiment of the present invention, the welding ribbon compensation structure is used for the welding ribbon, and the welding ribbon compensation structure 100 includes an operating frame 1, a pressing platform 2 and a compensation structure 3; the pressing platform 2 is arranged on the operating frame 1, and the pressing platform 2 has an operating table 21 for placing the welding ribbon; the compensation structure 3 includes at least one extrusion portion 31, and the extrusion portion 31 is arranged above the operating table 21 and is connected to the operating frame 1 for extrusion compensation toward the welding ribbon.

[0034] The technical solution of the present invention is to set up the operating frame 1, and set the pressing platform 2 on the operating frame 1, and the pressing platform 2 has an operating table 21 for placing the welding ribbon; the compensation structure 3 includes at least one extrusion part 31, and the extrusion part 31 is set above the operating table 21 and is connected to the operating frame 1, so as to perform extrusion compensation toward the welding ribbon; in this way, by setting up the pressing platform 2, the welding ribbon can be placed on the operating table 21 for operation, and by providing the extrusion part 31, the welding ribbon can be extruded by the extrusion part 31, and the welding ribbon originally in a straight surface can be squeezed and deformed to achieve compensation for the welding ribbon, that is, the welding ribbons of two adjacent welding points are longer than the distance between the welding points originally in a straight surface, and the shrinkage of the welding ribbon after welding is compensated by the length, so as to effectively reduce the warping effect caused by the shrinkage of the welding ribbon after welding of the battery cell.

[0035] The extrusion part 31 can be configured to be manually operated or automatically operated. Please refer to the following description for the specific configuration method.

[0036] Of course, in this embodiment, there is no limitation on the specific number of the extrusion parts 31 , which may be one or more.

[0037] In this embodiment, there is no specific limitation on the connection method between the press platform 2 and the operating frame 1 , which can be fixed, such as welding, or movable, such as bolting.

[0038] In this embodiment, the connection between the pressing portion 31 and the operating frame 1 is configured to be movable.

[0039] Furthermore, in an embodiment in which the extrusion portion 31 is manually operated, the technical solution of the present invention is that the extrusion portion 31 includes a pressure plate 311 and a column 312; one end of the column 312 along its axial direction is connected to the pressure plate 311, and the other end is passed through the outside of the operating frame 1, and the end of the pressure plate 311 away from the column 312 is squeezed against the operating table 21; in this way, through the setting of the column 312 and the pressure plate 311, the column 312 can be directly manually pulled to move, thereby driving the pressure plate 311 to extrude toward the operating table 21, thereby achieving extrusion compensation for the welding strip.

[0040] Of course, in order to achieve automation and convenience of operation, in the technical solution of the present invention, the welding strip compensation structure 100 also includes a driving part 32, and the driving part 32 includes a cylinder 321 for driving the extrusion part 31 to move; in this way, the cylinder 321 can be used to do work on the extrusion part 31 to achieve automated extrusion operation, saving time and effort.

[0041] It should be noted that, in this embodiment, there is no specific limitation on the configuration of the driving portion 32 , and it may also be a hydraulic push rod.

[0042] Furthermore, in order to enable the driving portion 32 to drive the multiple extrusion portions 31 to perform extrusion activities, in the technical solution of the present invention, the welding strip compensation structure 100 also includes a connecting plate 33, and the connecting plate 33 is arranged between the column 312 and the cylinder 321; in this way, the column 312 can be connected and supported by the connecting plate 33, and the driving portion 32 realizes the extrusion activity of the extrusion portion 31 by driving the connecting plate 33.

[0043] It should be noted that a plurality of the extrusion parts 31 are provided, and each of the extrusion parts 31 is connected to the connecting plate 33 , so that the extrusion parts 31 can be driven to move by driving the connecting plate 33 to move.

[0044] Furthermore, considering that the extrusion portion 31 will generate greater stress during extrusion, in order to avoid excessive stress, in the technical solution of the present invention, the welding strip compensation structure 100 also includes a buffer portion 34; the buffer portion 34 includes a sleeve 341 and a buffer spring 342, the sleeve 341 is sleeved on the outer peripheral wall of the column 312, and one end of the sleeve 341 along its axial direction passes through the interior of the connecting plate 33, the buffer spring 342 is sleeved on the outer peripheral wall of the column 312, and the two ends of the buffer spring 342 are respectively fixed to the end of the sleeve 341 away from the connecting plate 33 and the end of the pressure plate 311 close to the column 312; in this way, the sleeve 341 can be driven to move on the outer peripheral wall of the column 312 by driving the cylinder 321, and then the buffer spring 342 can be squeezed to realize the extrusion movement of the pressure plate 311, thereby achieving the purpose of extrusion compensation of the welding strip.

[0045] It should be noted that the column 312 can be arranged in a T-shape, the sleeve 341 is sleeved on the outer wall of the column 312, and a mounting hole compatible with the sleeve 341 is opened inside the connecting plate 33. The output end of the cylinder 321 is fixed to the end of the connecting plate 33 away from the pressure plate 311. The cylinder 321 drives the connecting plate 33 to move, that is, drives the sleeve 341 to move on the outer wall of the column 312 and squeezes the buffer spring 342. At the same time, the pressure plate 311 is squeezed toward the operating table 21 until the extrusion operation of the welding strip is completed.

[0046] In addition, the operating frame 1 is detachably connected to the press platform 2; in this way, the press platform 2 can be conveniently replaced and used. It can be understood that in some embodiments, the operating frame 1 and the press platform 2 are fixedly installed, which has limitations. Therefore, this embodiment improves the practicality of the press platform 2 by detachably connecting the operating frame 1 to the press platform 2, and press platforms of different sizes or models can be set for use.

[0047] It should be noted that the detachable connection between the operating frame 1 and the pressing platform 2 can be bolted or screwed.

[0048] In addition, in order to improve the compensation effect of the solder strip, in the technical solution of the present invention, a plurality of grooves 211 are provided on the operating table 21, and each of the grooves 211 is continuously arranged along the first direction; thus, by providing the grooves 211 on the operating table 21, when the solder strip is squeezed, the grooves 211 cause the solder strip to be sunken when squeezed, thereby stretching the solder strip.

[0049] Furthermore, considering that single-sided compensation still has limitations, in an embodiment of the present utility model, a plurality of protrusions 3111 are provided at one end of the pressure plate 311 close to the operating table 21, and each of the protrusions 3111 is adapted to each of the grooves 211; in this way, through the matching arrangement of the protrusions 3111 and the grooves 211, both sides of the welding strip are squeezed and compensated, thereby expanding the extension length of the welding strip.

[0050] Furthermore, the groove 211 is arc-shaped; thus, the protrusion 3111 adapted to the groove 211 is arc-shaped, that is, each of the grooves 211 is continuously arranged to form a wave-like shape, which is beneficial to protecting the solder strip and avoiding the solder strip being damaged by the combination of overly sharp grooves and protrusions, resulting in breakage and unusability.

[0051] It should be supplemented that the protrusion 3111 is fixedly installed to the pressing plate 311 .

[0052] The present invention also proposes a stringer device, which includes a stringer device and a welding strip compensation structure. The specific structure of the welding strip compensation structure refers to the above embodiment. Since the stringer device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0053] It should be noted that if Figure 3 As shown, the stringer device includes a frame, and the welding ribbon compensation structure is placed on the frame for use, that is, the operating frame 1 is fixedly installed on the frame.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A welding strip compensation structure for welding strips, characterized in that: include: operating frame; A pressing platform is provided on the operating frame, and the pressing platform has an operating table for placing the welding ribbon; as well as, The compensation structure includes at least one extrusion portion, which is arranged above the operating table and connected to the operating frame for extruding toward the welding strip.

2. The welding strip compensation structure according to claim 1, characterized in that: The extrusion part includes a pressing plate and a column; One end of the column along the axis direction is connected to the pressure plate, and the other end is passed through the outside of the operating frame. The end of the pressure plate away from the column is pressed against the operating table.

3. The welding strip compensation structure according to claim 2, characterized in that: The welding strip compensation structure further includes a driving part; The driving part includes a cylinder for driving the extrusion part to move.

4. The welding strip compensation structure according to claim 3, characterized in that: The welding strip compensation structure further includes a connecting plate, which is arranged between the column and the cylinder.

5. The welding strip compensation structure according to claim 4, characterized in that: The welding strip compensation structure further includes a buffer portion; The buffer part includes a sleeve and a buffer spring. The sleeve is sleeved on the outer peripheral wall of the column, and one end of the sleeve along its axial direction passes through the interior of the connecting plate. The buffer spring is sleeved on the outer peripheral wall of the column, and both ends of the buffer spring are respectively fixed to the end of the sleeve away from the connecting plate and the end of the pressure plate close to the column.

6. The welding strip compensation structure according to claim 1, characterized in that: The operating frame is detachably connected to the pressing platform.

7. The welding strip compensation structure according to claim 2, characterized in that: A plurality of grooves are formed on the operating table, and the grooves are continuously arranged along a first direction.

8. The welding strip compensation structure according to claim 7, characterized in that: A plurality of protrusions are provided on one end of the pressing plate close to the operating table, and each of the protrusions is matched with each of the grooves.

9. The welding strip compensation structure according to claim 8, characterized in that: The groove is arc-shaped.

10. A string welding device, characterized in that: The invention comprises the welding strip compensation structure as claimed in any one of claims 1 to 9.

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