A solder strip stretching device

Abstract

The utility model discloses a kind of welding strip stretching devices, it is related to battery assembly production technical field, including mounting, be arranged on mounting and be along the first direction arrangement several clamping components for clamping welding strip, and the driving part of clamping component driving connection, clamping component includes two groups of clamping unit, clamping unit includes several clamping pieces along the second direction arrangement, driving part is used to drive the clamping unit in the first direction each other close or far, so that each clamped welding strip can be stretched, after welding strip after stretching is released linearly, does not occur bending deformation, improves the welding strip position accuracy that lays to battery piece.

Description

Technical Field

[0001] This utility model relates to the field of battery module manufacturing technology, and in particular to a welding strip stretching device. Background Technology

[0002] During the battery string preparation process, the solder ribbon is pulled out from the solder ribbon roll and cut to a predetermined length, and used to interconnect and weld with the battery cells to form a battery string. The solder ribbon pulled out from the solder ribbon roll is in a bent state when it is free. After the bent solder ribbon is cut and placed on the battery cell, it will warp at both ends, which will lead to poor welding between the solder ribbon and the battery cell. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a welding strip stretching device that can clamp both ends of the welding strip and stretch it during the transfer and laying of the welding strip, so that the prepared welding strip is straightened and does not bend.

[0004] This application discloses a welding strip stretching device, comprising: a mounting component, a plurality of clamping assemblies for clamping welding strips disposed on the mounting component and arranged along a first direction, and a driving component drivenly connected to the clamping assemblies. The clamping assemblies include two sets of clamping units, each clamping unit including a plurality of clamping members arranged along a second direction. The driving component is used to drive the clamping units to move closer or further apart from each other in the first direction, wherein the second direction is perpendicular to the first direction.

[0005] Optionally, the clamping members in two adjacent clamping units of two adjacent sets of clamping assemblies are staggered in the second direction, and two adjacent clamping units in two spaced-out clamping assemblies clamp the two ends of the same welding strip in the first direction.

[0006] Optionally, it also includes end gripping components arranged at both ends of a plurality of clamping components. Each end gripping component is provided with two sets of clamping units arranged alternately in the second direction. The two sets of clamping units in the end gripping components at both ends respectively clamp a set of short welding strips located at the beginning and end of the battery string together with an adjacent clamping component, and clamp a set of long welding strips together with an alternate clamping unit.

[0007] Optionally, the driving component includes a first driving member and a second driving member whose driving ends are respectively drivenly connected to two sets of clamping units on the clamping assembly. The first driving member and the second driving member are both fixed on the mounting member, and the clamping unit is slidably connected to the mounting member.

[0008] Optionally, the driving component includes a plurality of driving motors and a spacing assembly driven and connected to the driving motors. The spacing assembly is connected to each clamping assembly respectively, and the driving component is used to drive the spacing assemblies to move closer or further apart from each other.

[0009] Optionally, the driving component includes a split cylinder fixed to the mounting member and two hinge seats connected to the driving end of the split cylinder. One end of each of the two hinge seats is fixedly connected to two sets of clamping units. The split cylinder simultaneously drives the other ends of the two sets of hinge seats to drive the two clamping units on the clamping assembly to move closer or further apart from each other.

[0010] Optionally, the clamping unit includes a fixed plate and a first clamping plate and a second clamping plate mounted on the fixed plate. A drive rod is rotatably connected to the fixed plate. One end of the drive rod is connected to a drive component through a linkage rod, and the other end is engaged with a cam on the inner wall of a guide hole on the first clamping plate and the second clamping plate. The bottom ends of the first clamping plate and the second clamping plate are provided with a plurality of downwardly extending clamping arms. The clamping arms on the first clamping plate and the clamping arms on the second clamping plate are arranged opposite to each other and are used to clamp a single welding strip.

[0011] Optionally, the clamping unit includes a first mounting plate and a second mounting plate stacked vertically. The first mounting plate is connected to the mounting member, and the second mounting plate is connected to the clamping member. The second mounting plate is connected to the first mounting plate via a limiting post. The limiting post passes through a slot in the first mounting plate and is fixedly connected to the second mounting plate. A spring is sleeved on the upper part of the limiting post, and the spring abuts against the upper end faces of the first mounting plate and the limiting post. An adjusting rod is provided on the side end face of the second mounting plate.

[0012] Optionally, it also includes a transfer mechanism connected to a plurality of the clamping assemblies via a crossbeam, the transfer mechanism including a vertical drive cylinder for driving the clamping assemblies to move vertically and a horizontal drive cylinder for driving the vertical drive cylinder horizontally.

[0013] The technical solution provided by this utility model uses a driving component on each clamping assembly to drive the clamping unit, so that the clamping units are relatively spaced apart and jointly clamp the two ends of the same welding strip at a preset distance, so that the clamped welding strip is stretched and straightened from both ends to adapt to the position of the battery cell, so that the welding strip laid on the battery cell does not bend or curl up, thereby improving the positional accuracy of the welding strip and the battery cell, and thus improving the welding quality of the battery string. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a bottom view schematic diagram of a welding strip stretching device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the first embodiment of the welding strip stretching device proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the second embodiment of the welding strip stretching device proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the clamping component in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the clamping unit in this utility model;

[0020] Figure 6 This is a structural schematic diagram of the fixed mounting plate or the movable mounting plate in this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of a welding strip stretching device proposed in this utility model.

[0022] The attached figures are labeled as follows:

[0023] 10. Welding strip; 11. Mounting component; 20. Clamping assembly; 21. Clamping unit; 24. Clamping element;

[0024] 241. Pushing mechanism; 242. Fixing plate; 243. First clamping plate; 244. Second clamping plate; 245. Drive rod; 246. Linking rod; 247. Clamping arm; 251. First mounting plate; 252. Second mounting plate; 253. Limiting post; 254. Spring; 255. Adjusting rod; 3. Drive component; 31. Splitting cylinder; 32. Hinge seat; 33. Splitting assembly; 34. First driving component; 35. Second driving component; 40. End gripping assembly; 50. Vertical drive electric cylinder; 51. Horizontal drive electric cylinder; 52. Crossbeam. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 , Figure 2 As shown, a welding strip stretching device includes: a mounting member 11, and a plurality of clamping assemblies 20 arranged on the mounting member 11 along a first direction (i.e., the direction of the length of the welding strip 10) for clamping the welding strip 10, and a driving component drivenly connected to the clamping assemblies 20. The clamping assembly 20 includes two sets of clamping units 21, and the clamping unit 21 includes a plurality of clamping members 24 arranged along a second direction. The driving component is used to drive the clamping units 21 to move closer or further away from each other in the first direction, wherein the second direction is perpendicular to the first direction.

[0028] Specifically, refer to Figure 1 As shown, in a plurality of clamping assemblies 20, the clamping members 24 in the two adjacent clamping units 21 of two adjacent sets of clamping assemblies 20 are staggered in the second direction. The two adjacent clamping units 21 on the two clamping assemblies 20 are respectively clamped in the first direction to the beginning and end of a set of welding strips 10. During the clamping of the welding strips 10, the driving component on each clamping assembly 20 drives the clamping unit 21, so that the clamping units 21 are relatively spaced apart and the two ends of the same welding strip 10 are far away from a preset distance, so that the same welding strip 10 being clamped is stretched and straightened from both ends to adapt to the position of the battery cell, so that the welding strip 10 laid on the battery cell does not bend or curl up, thereby improving the positional accuracy of the welding strip 10 and the battery cell, and thus improving the welding quality of the battery string.

[0029] Reference Figure 1As shown, the clamping members 24 in the two adjacent clamping units 21 between two adjacent clamping assemblies 20 are staggered in the second direction, which is horizontal and perpendicular to the first direction. The welding ribbon 10 stretching device is used to grab several sets of staggered welding ribbons 10. The staggered welding ribbons 10 are used to lay a back contact battery string. In the back contact battery string, the staggered welding ribbons 10 are distributed and connected in series on the same side of the battery cell. The welding ribbons 10 between the Nth and N+2th clamping assemblies 20 pass through the gap provided on one of the clamping assemblies 20 between the two clamping assemblies 20 to clamp the beginning and end ends of the same set of welding ribbons 10. For example, multiple clamping components 20 arranged side by side clamp multiple sets of staggered welding strips 10 in sequence. The clamping unit 21 in the first clamping component 20 and the clamping unit 21 in the third clamping component 20 clamp the two ends of the first set of welding strips 10. The clamping unit 21 in the second clamping component 20 and a group of adjacent clamping units 21 in the fourth clamping component 20 clamp the two ends of the second set of welding strips 10. The second set of welding strips 10 passes through the gap of the third clamping component 20, and so on. Multiple clamping components 20 stagger the two ends of the staggered welding strips 10. The clamping unit 21 on one clamping component 20 moves a preset distance relative to the clamping unit 21 on another clamping component 20 to stretch and straighten the welding strips 10.

[0030] In some embodiments, refer to Figure 1 As shown, the welding strip stretching device also includes end gripping components 40 arranged at both ends of all clamping components 20. Each end gripping component 40 is provided with two sets of clamping members 24 arranged alternately in a second direction. The second direction is horizontal and perpendicular to the first direction. The second direction is the arrangement direction of the welding strips 10 in the same group of welding strips 10. The two sets of clamping units 21 in the end gripping component 40 clamp a set of short welding strips located at the beginning of the battery string together with an adjacent clamping component 20, and clamp a set of long welding strips together with an alternate clamping component 20. The long welding strips are used to connect the surfaces of two adjacent battery cells. The short welding strips only overlap with the surface of a battery cell located at the two ends of the battery string and extend out the side of the battery cell as the lead wire of the entire battery string. When using the end gripping component 40, the welding strips 10 gripped by the welding strip stretching device are all the welding strips 10 laid in the entire battery string, so that the welding strips 10 of the whole string overlap with multiple battery cells at one time and are welded into a whole battery string at one time, which further improves the laying efficiency of the battery string.

[0031] In some embodiments, such as Figure 2As shown, the driving component includes a first driving member 34 and a second driving member 35, whose driving ends are respectively drivenly connected to two sets of clamping units 21 on the clamping assembly 20. One end of the first driving member 34 and the second driving member 35 are fixedly connected to the mounting member 11, and the clamping units 21 are slidably connected to the mounting member 11. When the clamping assembly 20 stretches the welding strip 10, the first driving member 34 and the second driving member 35 drive the clamping units 21 on the clamping assembly 20 to move closer to each other. At the same time, the connecting assemblies that clamp the two ends of the welding strip 10 move away from each other, thereby clamping and stretching the welding strip 10 from both ends. The first driving member 34 and the second driving member 35 on each clamping assembly 20 drive the two sets of clamping units 21 connected to them to move closer to each other, so that multiple clamping units 21 simultaneously move the two ends of multiple sets of staggered welding strips 10 away, thereby simultaneously stretching and elongating multiple staggered welding strips 10.

[0032] In addition, such as Figure 3 As shown, the driving component may include several drive motors and a spacing assembly 33 connected to several drive motors 3. Multiple clamping assemblies 20 are slidably connected to the mounting component 11. Each spacing assembly 33 is connected to a clamping assembly 20. One drive motor controls one or two spacing assemblies 33 at the same time. The drive motor 3 can be connected to the spacing assembly 33 respectively through a lead screw or a timing belt structure. Alternatively, two opposing spacing assemblies 33 can be connected to a lead screw or a timing belt. Several drive motors drive multiple spacing assemblies 33 at the same time, so as to simultaneously drive each clamping assembly 20 away from each other by a preset stretching distance, so as to simultaneously stretch and lengthen multiple staggered welding strips 10.

[0033] In some embodiments, such as Figure 4 As shown, the driving component can also drive components including a split cylinder 31 and two hinge seats 32 connected to the driving end of the split cylinder 31. The other ends of the two hinge seats 32 are respectively fixedly connected to two sets of clamping units 21. The two clamping units 21 are respectively connected to the mounting component 11 through sliders. The split cylinder 31 simultaneously drives the other ends of the two sets of hinge seats 32 to drive the two clamping units 21 on the clamping assembly 20 to move horizontally. The hinge seat 32 includes two hinged connecting rods. The split cylinder 31 vertically drives the hinge seat 32 to move. The hinge seat 32 converts the vertical driving force into a horizontal pushing force, so that the adjacent clamping units 21 move horizontally away from or closer to each other.

[0034] In some embodiments, such as Figure 5As shown, the clamping member 24 includes a fixed plate 242 and a first clamping plate 243 and a second clamping plate 244 mounted on the fixed plate 242. The fixed plate 242 is also provided with a drive rod 245. One end of the drive rod 245 is connected to the pushing mechanism 241 through a connecting rod 246, and the other end is connected to a cam in the guide hole provided on the first clamping plate 243 and the second clamping plate 244. The other end of the drive rod 245 is a cam structure. The cam is tangentially engaged with the inner wall of the guide hole provided on the first clamping plate 243 and the second clamping plate 244, so that the drive rod 245 rotates while driving the first clamping plate 243 and the second clamping plate 244 to move in opposite directions in the second direction. The bottom ends of the first clamping plate 243 and the second clamping plate 244 are provided with several downwardly extending clamping arms 247. The clamping arms 247 on the first clamping plate 243 and the clamping arms 247 on the second clamping plate 244 are arranged one-to-one, and the two corresponding clamping arms 247 clamp a welding strip 10 in opposite directions.

[0035] When the pushing mechanism 241 pushes the connecting rod 246 to move, the connecting rod 246 simultaneously pushes one end of the driving rod 245, causing the other end of the driving rod 245 to rotate within the guide holes of the first clamping plate 243 and the second clamping plate 244, thereby simultaneously driving the first clamping plate 243 and the second clamping plate 244 to move in opposite directions, so that the clamping arms 247 arranged opposite to each other on the first clamping plate 243 and the second clamping plate 244 clamp the welding strip 10 in opposite directions.

[0036] Specifically, such as Figure 5 , Figure 6 As shown, each clamping unit 21 includes a first mounting plate 251 and a second mounting plate 252 stacked vertically. The first mounting plate 251 is positioned above the second mounting plate 252 and connected to the mounting member 11. The second mounting plate 252 is connected to the clamping member 24. The second mounting plate 252 is connected to the first mounting plate 251 via a limiting post 253. The limiting post 253 passes through a slot on the first mounting plate 251 and is fixedly connected to the second mounting plate 252. A spring 254 is sleeved on the upper part of the limiting post 253. The spring 254 is connected to the first mounting plate 251 and the clamping member 24. The upper end face of the limiting post 253 abuts against the first mounting plate 251, causing the second mounting plate 252 to float and connect to the first mounting plate 251. An adjusting rod 255 is provided on the side end face of the second mounting plate 252, which is used to adjust the relative movement of the second mounting plate 252 to the first mounting plate 251 in the second direction, so as to adjust the position accuracy of the clamping unit 21 connected to the second mounting plate 252 in the second direction, so that the clamping members 24 corresponding to clamp each welding strip 10 are arranged in a straight line in the first direction, and the parallel spacing of each welding strip 10 in each group of welding strips 10 is precisely controlled.

[0037] Furthermore, such as Figure 7As shown, the welding strip 10 stretching device also includes a transfer mechanism connected to several clamping assemblies 20 via a crossbeam 52. The transfer mechanism includes a vertical drive cylinder 50 for vertically driving the clamping assemblies 20 and a horizontal drive cylinder 5151 for horizontally driving the vertical drive cylinder 50 and the clamping assemblies 20, which are directly connected to the crossbeam 52, to transfer the prepared welding strip 10 to the laying position where it is combined with the battery cell. During the transfer process, the clamping assemblies 20 perform a stretching action on each welding strip 10 to straighten the welding strip 10 before it is combined with the battery cell, preventing defects such as bending or curling of the welding strip 10 that is combined with the battery cell.

[0038] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A welding strip stretching device, characterized in that, include: Mounting component (11), a plurality of clamping assemblies (20) for clamping solder strips disposed on the mounting component (11) and arranged along a first direction, and a driving component drivably connected to the clamping assemblies (20), wherein the clamping assembly (20) includes two sets of clamping units (21), the clamping unit (21) includes a plurality of clamping members (24) arranged along a second direction, and the driving component is used to drive the clamping units (21) to move closer to or further away from each other in the first direction, wherein the second direction is perpendicular to the first direction.

2. The welding strip stretching device according to claim 1, characterized in that, The clamping members (24) in the two adjacent sets of clamping units (21) between two adjacent clamping assemblies (20) are staggered in the second direction, and the two adjacent clamping units (21) in the two spaced clamping assemblies (20) clamp the two ends of the same welding strip in the first direction respectively.

3. The welding strip stretching device according to claim 2, characterized in that, It also includes end gripping components (40) arranged at both ends of several clamping components (20). Each end gripping component (40) is provided with two sets of clamping units (21) arranged alternately with the clamping members (24) in the second direction. The two sets of clamping units (21) in the end gripping components (40) at both ends respectively clamp a set of short welding strips located at the beginning and end of the battery string together with an adjacent clamping component (20), and clamp a set of long welding strips together with an alternate clamping unit (21).

4. The welding strip stretching device according to claim 1, characterized in that, The driving component includes a first driving member (34) and a second driving member (35) that are drivenly connected to two sets of clamping units (21) on the clamping assembly (20). The first driving member (34) and the second driving member (35) are both fixed on the mounting member (11). The clamping unit (21) is slidably connected to the mounting member (11).

5. The welding strip stretching device according to claim 1, characterized in that, The driving component includes a plurality of driving motors (3) and a spacing assembly (33) connected to the driving motors (3). The spacing assembly (33) is connected to each clamping assembly (20). The driving component is used to drive the spacing assemblies (33) to move closer or further apart from each other.

6. The welding strip stretching device according to claim 1, characterized in that, The driving component includes a split cylinder (31) fixed on the mounting (11) and two hinge seats (32) connected to the driving end of the split cylinder (31). One end of the two hinge seats (32) is fixedly connected to two sets of clamping units (21). The split cylinder (31) simultaneously drives the other end of the two sets of hinge seats (32) to drive the two clamping units (21) on the clamping assembly (20) to move closer or further apart from each other.

7. The welding strip stretching device according to claim 1, characterized in that, The clamping unit (21) includes a fixed plate (242), and a first clamping plate (243) and a second clamping plate (244) mounted on the fixed plate (242). A drive rod (245) is rotatably connected to the fixed plate (242). One end of the drive rod (245) is connected to the drive component (241) through a connecting rod (246), and the other end is engaged with a cam on the inner wall of the guide hole on the first clamping plate (243) and the second clamping plate (244). The bottom ends of the first clamping plate (243) and the second clamping plate (244) are provided with a plurality of downwardly extending clamping arms (247). The clamping arms (247) on the first clamping plate (243) and the clamping arms (247) on the second clamping plate (244) are arranged opposite to each other and are used to clamp a single welding strip (10).

8. The welding strip stretching device according to claim 1, characterized in that, The clamping unit (21) includes a first mounting plate (251) and a second mounting plate (252) stacked on top of each other. The first mounting plate (251) is connected to the mounting member (11), and the second mounting plate (252) is connected to the clamping member (24). The second mounting plate (252) is connected to the first mounting plate (251) through a limiting post (253). The limiting post (253) passes through a slot on the first mounting plate (251) and is fixedly connected to the second mounting plate (252). A spring (254) is sleeved on the limiting post (253). The spring (254) abuts against the upper end face of the first mounting plate (251) and the limiting post (253). An adjusting rod (255) is provided on the side end face of the second mounting plate (252).

9. The welding strip stretching device according to claim 1, characterized in that, It also includes a transfer mechanism connected to a plurality of the clamping assemblies (20) via a crossbeam (52), the transfer mechanism including a vertical drive cylinder (50) for driving the clamping assembly (20) to move vertically and a horizontal drive cylinder (51) for driving the vertical drive cylinder (50) to move horizontally.

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