Battery piece placing platform

Abstract

The utility model relates to the technical field of battery piece stringing, and provides a battery piece placing platform, which comprises a battery piece bearing platform, a clamping jaw pair and a driving mechanism, the clamping jaw pair comprises a front clamping jaw and a rear clamping jaw which are arranged on the two sides of the battery piece bearing platform and used for clamping or loosening the two ends of the welding strip. The driving mechanism is connected with the clamping jaw pair and used for driving the rear clamping jaw to be away from or close to the battery piece bearing platform in the length direction of the welding strip and driving the front clamping jaw and the rear clamping jaw to clamp or loosen the two ends of the welding strip, and when the rear clamping jaw is away from the battery piece bearing platform, the clamped welding strip is tightened. According to the scheme, the welding strip can be clamped and tightened, the welding strip can make contact with grid lines on battery pieces conveniently, and the yield of battery strings is increased.

Description

Technical Field

[0001] This utility model relates to the field of battery cell stringing technology, and in particular to a battery cell placement platform. Background Technology

[0002] When photovoltaic module cells are produced in strings, solder ribbons need to be placed on the surface of the cells and fixed to the surface of the cells, and attached to the grid lines on the surface of the cells, so as to conduct the current generated by the cells.

[0003] In existing technologies, there are three common methods for fixing the welding ribbon to the solar cell: welding, dispensing, and coating. When positioning the welding ribbon, the solar cell needs to be transported to a designated work station, and then the welding ribbon of the required length is placed on the surface of the solar cell. Finally, the welding ribbon on the solar cell is connected to the solar cell as a whole. Therefore, a platform is needed to place the solar cell and receive the welding ribbon.

[0004] In the existing technology, when the welding ribbon is placed on the cell placement platform, the welding ribbon clamps on the cell placement platform are in an open state. After the welding ribbon is released and falls onto the cell placement platform, the welding ribbon clamps close to hold the welding ribbon. During this process, since the welding ribbon is first in a loose state and then clamped by the welding ribbon clamps on the cell placement platform, the welding ribbon on the cell placement platform is prone to shrinkage, which is not conducive to close contact between the welding ribbon and the cell, resulting in a decrease in the yield of the cells being strung together.

[0005] Therefore, there is an urgent need for a cell placement platform that can clamp and tighten the solder ribbon, making it easier for the solder ribbon to contact the grid lines on the cell and improving the yield rate of cell strings. Utility Model Content

[0006] The purpose of this invention is to solve the problem of solder ribbon shrinkage and to provide a battery cell placement platform that can clamp and tighten the solder ribbon, making it easier for the solder ribbon to contact the grid lines on the battery cell and improving the yield rate of battery string assembly.

[0007] To solve the above-mentioned technical problems, as one aspect of this utility model, a battery cell placement platform is provided, including: a battery cell receiving platform, a pair of grippers, and a driving mechanism;

[0008] The gripper pair includes a front gripper and a rear gripper located on both sides of the cell receiving platform, used to grip or release the two ends of the welding strip;

[0009] The drive mechanism is connected to the gripper pair and is used to drive the rear gripper to move away from or towards the cell receiving platform along the length of the welding strip, as well as to drive the front and rear grippers to clamp or release both ends of the welding strip. When the rear gripper moves away from the cell receiving platform, the clamped welding strip is tightened.

[0010] According to an example embodiment of the present invention, both the front gripper and the rear gripper include a first clamping plate and a second clamping plate. The top of the first clamping plate and the second clamping plate are provided with a plurality of spaced-apart half-grips. One side of the first clamping plate and one side of the second clamping plate slide against each other, so that the first clamping plate and the second clamping plate slide relative to each other, thereby realizing the clamping or releasing of the two half-grips.

[0011] According to an exemplary embodiment of the present invention, both the front and rear grippers further include two gripper contacts, which are fixedly connected to the bottom of the first clamping plate and the bottom of the second clamping plate, respectively. By adjusting the distance between the two gripper contacts, the relative sliding of the first and second clamping plates can be achieved.

[0012] According to an exemplary embodiment of the present invention, the driving mechanism includes a front gripper driving mechanism and a rear gripper driving mechanism.

[0013] The front gripper drive mechanism is connected to the front gripper and is used to drive the front gripper to grip or release the welding strip;

[0014] The rear gripper drive mechanism is connected to the rear gripper and is used to drive the rear gripper to clamp or release the welding strip and to drive the rear gripper to move away from or towards the cell receiving platform along the length of the welding strip.

[0015] According to an exemplary embodiment of the present invention, the front gripper drive mechanism includes a front drive cylinder, a front lifting connector, and a front gripper trigger plate.

[0016] The front drive cylinder is fixedly connected to the front lifting connector and is used to drive the front lifting connector to move up and down.

[0017] The front gripper trigger plate is fixedly connected to the front lifting connector. The upper part of the front gripper trigger plate is a trigger ramp, the width of which gradually increases from top to bottom, and it is located below the two gripper contacts. The front gripper trigger plate moves up and down under the drive of the front lifting connector. When it moves upward, the trigger ramp extends into the middle of the two gripper contacts and pushes the two gripper contacts out to both sides, increasing the distance between the two gripper contacts.

[0018] According to an exemplary embodiment of the present invention, the rear gripper drive mechanism includes a rear gripper trigger plate;

[0019] The upper part of the rear gripper trigger plate is a trigger ramp, the width of which gradually increases from top to bottom, and it is located below the two gripper contacts. The rear gripper trigger plate can move up and down. When it moves upward, the trigger ramp extends into the middle of the two gripper contacts and pushes the two gripper contacts to the sides, increasing the distance between the two gripper contacts.

[0020] According to an exemplary embodiment of this utility model, the rear gripper drive mechanism further includes a rear drive cylinder, two third clamping plates, a rear lifting connector, and a positioning frame. The rear gripper drive mechanism is also used to drive the rear lifting connector to move along the length of the welding strip.

[0021] The extension and retraction direction of the rear drive cylinder is consistent with the length direction of the welding strip. Two third clamping plates are fixed on the moving end of the rear drive cylinder. The third clamping plates are slidably connected to the lower part of the rear lifting connector, and the lower part of the rear lifting connector is located between the two third clamping plates. Under the drive of the rear drive cylinder, the two third clamping plates drive the rear lifting connector to move back and forth along the length direction of the welding strip.

[0022] The positioning frame includes a positioning plate, and the positioning plate is provided with a sliding limiting groove. The sliding limiting groove extends along the length of the welding strip in the direction of the rear gripper away from the battery cell receiving platform and downward.

[0023] The rear lifting connector is provided with a sliding limiting protrusion, which slides in the sliding limiting groove to realize the sliding connection between the rear lifting connector and the positioning frame along the length of the weld strip and in the up and down directions.

[0024] The rear lifting connector is fixedly connected to the rear gripper trigger plate.

[0025] According to an exemplary embodiment of the present invention, the rear gripper driving mechanism further includes a rear connecting sliding device, which includes a limiting cap, a limiting slide rod, a lifting rod, and a rear connecting slider; the rear gripper trigger plate further includes a limiting plate, which is provided with a limiting slide hole; the rear gripper further includes a limiting seat, which includes a sliding groove, and the first clamping plate and the second clamping plate are located in the sliding groove.

[0026] The limiting slide bar is set vertically and inserted into the limiting slide hole, so that the limiting plate can slide up and down on the limiting slide bar;

[0027] The limit cap is located at the bottom of the limit slide bar;

[0028] The bottom of the lifting rod is fixedly connected to the top of the limiting slide rod, and the top of the lifting rod is also fixedly connected to the limiting seat of the rear gripper.

[0029] The rear connecting slider is located between the lifting rod and the rear gripper trigger plate, and is slidably connected to the lifting rod and fixedly connected to the rear gripper trigger plate.

[0030] When the sliding limit protrusion moves along the length of the welding strip towards the direction of the rear clamping jaw away from the battery cell receiving platform, the rear clamping jaw moves in the same direction.

[0031] When the sliding limit protrusion moves downward, the rear gripper trigger plate moves downward, and the rear gripper clamps the welding strip.

[0032] According to an exemplary embodiment of the present invention, the rear gripper drive mechanism further includes a rear connecting plate, which is connected to the rear lifting connector and the rear gripper trigger plate.

[0033] The rear lifting connector includes a cam;

[0034] The rear connecting plate is provided with multiple cam holes along the length of the welding strip, and the cam is connected in the cam hole.

[0035] According to an example embodiment of the present invention, the battery cell receiving platform may be one or more, and the number of gripper pairs may be one or more pairs, with one pair of grippers corresponding to one battery cell receiving platform.

[0036] The beneficial effects of this utility model are:

[0037] In addition to clamping and releasing the two ends of the welding strip, the drive mechanism of this utility model also drives the rear gripper to move away from or closer to the battery cell receiving platform, which can clamp and tighten the welding strip, making it easier for the welding strip to contact the grid lines on the battery cell and improving the yield of battery string assembly. Attached Figure Description

[0038] Figure 1 The schematic diagram shows the structure of the battery cell placement platform;

[0039] Figure 2 A schematic diagram of the structure of the battery cell placement platform (from another angle);

[0040] Figure 3 A schematic diagram of the rear gripper and the rear connecting sliding device is shown.

[0041] Among them, 1—battery cell receiving platform, 2—gripper pair, 21—front gripper, 22—rear gripper, 221—first clamping plate, 222—second clamping plate, 223—gripper contact, 224—limiting seat, 321—rear drive cylinder, 322—rear lifting connector, 3221—sliding limit protrusion, 3222—cam, 3223—transmission link, 323—rear gripper trigger plate, 3231—trigger inclined surface, 3232—limiting plate, 324—positioning frame, 3241—sliding limit groove, 325—rear connecting sliding device, 3251—limiting cap, 3252—limiting slide bar, 3253—lifting rod, 3254—rear connecting slider, 326—rear connecting plate, 3261—cam hole, 327—third clamping plate. Detailed Implementation

[0042] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. In the drawings, for clarity, the thickness of regions and layers is exaggerated. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted.

[0043] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0044] The following example describes a battery cell placement platform of this utility model. This example is only a part of the embodiments of this utility model, but the protection scope of this utility model is not limited thereto. All other embodiments obtained by those skilled in the art without inventive effort should be covered within the protection scope of this utility model.

[0045] As the first embodiment of this utility model, a battery cell placement platform is provided, such as... Figure 1 and Figure 2 As shown, it includes: a cell receiving platform 1, a pair of grippers 2, and a drive mechanism.

[0046] There are one or more cell receiving platforms 1, and the number of gripper pairs 2 is one or more pairs, with one pair of gripper pairs 2 corresponding to one cell receiving platform 1.

[0047] The gripper pair 2 includes a front gripper 21 and a rear gripper 22 disposed on both sides of the cell receiving platform 1, for gripping or releasing the two ends of the welding strip.

[0048] The front gripper 21 and the rear gripper 22 have the same structure. For example... Figure 3As shown, the rear gripper 22 includes a first gripper plate 221, a second gripper plate 222, two gripper contacts 223, and a limiting seat 244. Multiple spaced-apart half-grips are provided on the top of both the first and second gripper plates 221 and 222. One side of the first gripper plate 221 and one side of the second gripper plate 222 slide against each other, allowing the first and second gripper plates 221 and 222 to slide relative to each other, thus clamping or releasing the two half-grips. The two gripper contacts 223 are fixedly connected to the bottom of the first gripper plate 221 and the bottom of the second gripper plate 222, respectively. The relative sliding of the first and second gripper plates 221 and 222 is achieved by adjusting the distance between the two gripper contacts 223. The limiting seat 224 includes a slide groove, in which the first clamping plate (221) and the second clamping plate (222) are located. The slide groove provides sliding space for the first clamping plate (221) and the second clamping plate (222) and is used to move the first clamping plate 221 and the second clamping plate 222 away from or closer to the battery cell receiving platform 1.

[0049] The drive mechanism is connected to the gripper pair 2 and is used to drive the rear gripper 22 away from or near the cell receiving platform 1 along the length of the welding strip, and to drive the front gripper 21 and the rear gripper 22 to clamp or release the two ends of the welding strip. When the rear gripper 22 moves away from the cell receiving platform 1, the clamped welding strip is tightened.

[0050] The drive mechanism includes a front gripper drive mechanism and a rear gripper drive mechanism.

[0051] The rear gripper drive mechanism is connected to the rear gripper 22 and is used to drive the rear gripper 22 to clamp or release the welding strip, and also to drive the rear gripper 22 away from or towards the cell receiving platform 1. Figure 1 and Figure 2 As shown, the rear gripper drive mechanism includes a rear drive cylinder 321, a rear lifting connector 322, a rear gripper trigger plate 323, a positioning frame 324, a rear connecting sliding device 325, a rear connecting plate 326, and two third clamping plates 327.

[0052] The extension and retraction direction of the rear drive cylinder 321 is consistent with the length direction of the welding strip. Two third clamping plates 327 are fixed on the moving end of the rear drive cylinder. The third clamping plates 327 are slidably connected to the lower part of the rear lifting connector 322, and the lower part of the rear lifting connector is located between the two third clamping plates 327. Driven by the rear drive cylinder 321, the two third clamping plates 327 drive the rear lifting connector 322 to move back and forth along the length direction of the welding strip. The rear lifting connector 322 includes a sliding limit protrusion 3221, a cam 3222, a transmission connecting rod 3223, and a connector body. The connector body is located above the rear drive cylinder 321 and between the two positioning plates of the positioning frame 324. The lower part of the connector body is located between the two third clamping plates 327 and is slidably connected to the third clamping plates 327. The upper part of the connector body is fixedly connected to the rear gripper trigger plate 323. Sliding limit protrusions 3221 are located on both sides of the lower part of the connector body. This design has a total of 4 sliding limit protrusions 3221, with two on each side. Cams 3222 are located on the top of the rear lifting connector 322 and are connected to the connector body through vertically arranged transmission connecting rods 3223.

[0053] The positioning frame 324 includes a positioning plate with a sliding limiting groove 3241. The sliding limiting groove 3241 extends along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 1 and downwards. In a preferred embodiment, at the extended end of the sliding limiting groove 3241, it only extends along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 1, making the sliding limiting groove 3241 resemble the side profile of an escalator. The sliding limiting protrusion 3221 slides within the sliding limiting groove 3241, achieving a sliding connection between the rear lifting connector 322 and the positioning frame 324 along the length of the welding strip and in the vertical direction. This allows the rear drive cylinder 321 to simultaneously drive the rear lifting connector 322 to move vertically while simultaneously driving the rear lifting connector 322 to move vertically. The positioning plate of this solution consists of two pieces. The third clamping plate 327 and the positioning plate are both set vertically, but the positioning plate is perpendicular to the third clamping plate 327. The lower part of the main body of the connector is located between the two positioning plates. There are four sliding limit grooves 3241 in total. There are two sliding limit grooves 3241 on each positioning plate, and each sliding limit groove 3241 corresponds to a sliding limit protrusion 3221.

[0054] The rear connecting plate 325 connects the rear lifting connector 322 and the rear gripper trigger plate 323. The rear connecting plate 325 has multiple cam holes 3251 along the length of the weld strip. Cams 3222 are connected to the cam holes 3251. In a preferred embodiment, the cams 3222 are connected to the cam holes 3251 in the middle of the rear connecting plate 325. When a problem occurs in the connection between the cam 3222 and the cam hole 3251 (e.g., abnormal noise), the connected cam hole 3251 is replaced.

[0055] The rear gripper trigger plate 323 and the rear lifting connector 322 are fixedly connected via a rear connecting plate 325, with the lower part of the rear gripper trigger plate 323 fixedly connected to one end of the rear connecting plate 325. If there are multiple pairs of grippers 22 and multiple rear grippers 22, one rear connecting plate 325 connects multiple rear gripper trigger plates 323, enabling one drive mechanism to control multiple rear grippers 22 simultaneously. As a preferred embodiment, there are two pairs of grippers 2, with one rear connecting plate 325 connecting two rear gripper trigger plates 323, and the two rear gripper trigger plates 323 are respectively connected to both ends of the rear connecting plate 325.

[0056] The upper part of the rear gripper trigger plate 323 is a trigger ramp 3231, the width of which gradually increases from top to bottom, and is located below the two gripper contacts 223. It can abut against the two gripper contacts 223 or be at a certain distance. The rear gripper trigger plate 323 moves up and down under the action of the rear lifting connector 322. When it moves upward, the trigger ramp 3231 extends into the middle of the two gripper contacts 223 and pushes the two gripper contacts 223 out to both sides, increasing the distance between the two gripper contacts 223 and releasing the rear gripper 22. The lower part of the rear gripper trigger plate 323 includes a horizontally set limiting plate 3232, which is provided with a limiting sliding hole.

[0057] like Figure 2 and Figure 3As shown, the rear connecting sliding device 325 includes a limiting cap 3251, a limiting slide rod 3252, a lifting rod 3253, and a rear connecting slider 3254. The limiting slide rod 3252 is vertically arranged and inserted into the limiting slide hole 3232, allowing the limiting plate 3232 to slide up and down on the limiting slide rod 3252. The limiting cap 3251 is located at the bottom of the limiting slide rod 3252, enabling the limiting plate 3232 to slide within a limited range. The bottom of the lifting rod 3253 is fixed and coaxially connected to the top of the limiting slide rod 3252, and the top of the lifting rod 3253 is also fixedly connected to the limiting seat 224 of the rear gripper 22. The diameter of the limiting slide rod 3252 is smaller than the diameter of the lifting rod 3253. The rear connecting slider 3254 is located between the lifting rod 3253 and the rear gripper trigger plate 323, and is slidably connected to the lifting rod 3253 and fixedly connected to the rear gripper trigger plate 323. Meanwhile, because the sliding limiting groove 3241 extends along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 1, and also extends downwards, when the sliding limiting protrusion 3221 moves downwards, the rear gripper trigger plate 323 moves in the same direction, causing the triggering inclined surface 3231 to move downwards away from the gripper contact 223, and the two gripper contacts 223 move closer together, achieving clamping of the rear gripper 22. Simultaneously, when the sliding limiting protrusion 3221 moves along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 1, the rear gripper trigger plate 323 moves in the same direction, driving the rear gripper 22 to move in the same direction, thus tightening the welding strip.

[0058] The front gripper drive mechanism is connected to the front gripper 21 and is used to drive the front gripper 21 to clamp or release the welding strip.

[0059] The front gripper drive mechanism includes a front drive cylinder, a front lifting connector, a front gripper trigger plate, a front connecting plate, and a front connecting slider.

[0060] The front gripper trigger plate is fixedly connected to the front lifting connector. The upper part of the front gripper trigger plate is a trigger ramp, the width of which gradually increases from top to bottom, and it is located below the two gripper contacts. The front gripper trigger plate moves up and down under the drive of the front lifting connector. When it moves upward, the trigger ramp extends into the middle of the two gripper contacts and pushes the two gripper contacts out to both sides, increasing the distance between the two gripper contacts.

[0061] In the front gripper drive mechanism, the structures of the front lifting connector, front gripper trigger plate, front connecting plate, and front connecting slider are the same as those in the rear gripper drive mechanism. The difference lies in the fact that the front gripper drive mechanism lacks a positioning frame and a third clamping plate. The front drive cylinder is fixedly connected to the front lifting connector and is used to drive the front lifting connector to move up and down, thereby enabling the front gripper 21 to clamp and release.

[0062] Since tightening the welding strip only requires one gripper to move away from the cell receiving platform 1, only the rear gripper 22 needs to move.

[0063] The principle behind this solution is:

[0064] Before the welding strip is placed on the cell receiving platform 1, the rear drive cylinder 321 retracts, causing the rear lifting connector 322 to move towards the front gripper 21 (i.e., towards the cell receiving platform 1). This, in turn, causes the rear gripper trigger plate 323 to move towards the front gripper 21. The rear gripper trigger plate 323 then moves the rear gripper 22 closer to the front gripper 21. Simultaneously, the rear lifting connector 322 moves upward, and the rear gripper trigger plate 323 abuts against the clamping contact 223 of the rear gripper 22, increasing the distance between the two clamping contacts 223, thus opening the rear gripper 22. At the same time, the gripper trigger plate connected to the front gripper 21 moves upward under the action of the front drive cylinder, opening the front gripper 21.

[0065] After the welding strip is placed on the cell receiving platform 1, the front drive cylinder moves downward, causing the front gripper trigger plate connected to the front gripper 21 to move downward, and the front gripper 21 clamps the front end of the welding strip. At the same time, the rear drive cylinder 321 moves away from the front gripper 21, causing the rear lifting connector 322 to move downward and away from the front gripper 21, which in turn causes the rear gripper trigger plate 323 connected to the rear gripper 22 to move downward and away from the front gripper 21. The rear gripper 22 clamps and moves away from the front gripper 21, thus tauting the welding strip placed on the cell receiving platform 1.

[0066] In addition to clamping and releasing the two ends of the welding strip, the drive mechanism of this utility model also drives the rear gripper to move away from or closer to the battery cell receiving platform. After the welding strip is placed on the battery cell receiving platform, the front gripper and the rear gripper clamp the welding strip, and the rear gripper moves away from the front gripper, thereby tightening the welding strip, which facilitates the contact between the welding strip and the grid lines on the battery cell and improves the yield of battery string assembly.

[0067] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cell placement platform, characterized in that, include: The cell receiving platform (1), the gripper pair (2), and the drive mechanism; The clamp pair (2) includes a front clamp (21) and a rear clamp (22) disposed on both sides of the cell receiving platform, for clamping or releasing the two ends of the welding strip; The drive mechanism is connected to the gripper pair (2) and is used to drive the rear gripper (22) away from or near the cell receiving platform (1) along the length of the welding strip, and to drive the front gripper (21) and the rear gripper (22) to clamp or release the two ends of the welding strip. When the rear gripper (22) moves away from the cell receiving platform (1), the clamped welding strip is tightened.

2. The cell placement platform of claim 1, wherein, Both the front gripper (21) and the rear gripper (22) include a first clamping plate (221) and a second clamping plate (222). The top of the first clamping plate (221) and the second clamping plate (222) are provided with a plurality of spaced half grippers. One side of the first clamping plate (221) and one side of the second clamping plate (222) slide against each other, so that the first clamping plate (221) and the second clamping plate (222) slide relative to each other, thereby achieving the clamping or releasing of the two half grippers.

3. The cell placement platform of claim 2, wherein, Both the front jaw (21) and the rear jaw (22) also include two jaw contacts (223). The two jaw contacts (223) are fixedly connected to the bottom of the first clamping plate (221) and the bottom of the second clamping plate (222), respectively. By adjusting the distance between the two jaw contacts (223), the relative sliding of the first clamping plate (221) and the second clamping plate (222) can be achieved.

4. The cell placement platform of claim 3, wherein, The drive mechanism includes a front gripper drive mechanism and a rear gripper drive mechanism; The front gripper drive mechanism is connected to the front gripper (21) and is used to drive the front gripper (21) to clamp or release the welding strip; The rear gripper drive mechanism is connected to the rear gripper (22) and is used to drive the rear gripper (22) to clamp or release the welding strip and drive the rear gripper (22) to move away from or closer to the cell receiving platform (1) along the length of the welding strip.

5. The cell placement platform of claim 4, wherein, The front gripper drive mechanism includes a front drive cylinder, a front lifting connector, and a front gripper trigger plate. The front drive cylinder is fixedly connected to the front lifting connector and is used to drive the front lifting connector to move up and down. The front gripper trigger plate is fixedly connected to the front lifting connector. The upper part of the front gripper trigger plate is a trigger ramp, the width of which gradually increases from top to bottom, and it is located below the two gripper contacts. The front gripper trigger plate moves up and down under the drive of the front lifting connector. When it moves upward, the trigger ramp extends into the middle of the two gripper contacts and pushes the two gripper contacts out to both sides, increasing the distance between the two gripper contacts.

6. The cell placement platform of claim 4, wherein, The rear gripper drive mechanism includes a rear gripper trigger plate (323); The upper part of the rear gripper trigger plate (323) is a trigger ramp (3231), the width of which gradually increases from top to bottom, and is located below the two gripper contacts (223); the rear gripper trigger plate (323) can move up and down. When it moves upward, the trigger ramp (3231) extends into the middle of the two gripper contacts (223) and pushes the two gripper contacts (223) out to both sides, increasing the distance between the two gripper contacts (223).

7. The cell placement platform of claim 6, wherein, The rear gripper drive mechanism also includes a rear drive cylinder (321), two third clamping plates (327), a rear lifting connector (322), and a positioning frame (324). The rear gripper drive mechanism is also used to drive the rear lifting connector (322) to move along the length of the welding strip. The extension and retraction direction of the rear drive cylinder (321) is consistent with the length direction of the welding strip. Two third clamping plates (327) are fixed on the moving end of the rear drive cylinder (321). The third clamping plates (327) are slidably connected to the lower part of the rear lifting connector (322), and the lower part of the rear lifting connector (322) is located between the two third clamping plates (327). Under the drive of the rear drive cylinder (321), the two third clamping plates (327) drive the rear lifting connector (322) to move back and forth along the length direction of the welding strip. The positioning frame (324) includes a positioning plate, on which a sliding limiting groove (3241) is provided. The sliding limiting groove (3241) extends along the length of the welding strip towards the rear gripper (22) away from the battery cell receiving platform (1) and downward. The rear lifting connector (322) is provided with a sliding limiting protrusion (3221), which slides in the sliding limiting groove (3241) to realize the sliding connection between the rear lifting connector (322) and the positioning frame (324) along the length of the weld strip and in the up and down directions; The rear lifting connector (322) is fixedly connected to the rear gripper trigger plate (323).

8. The cell placement platform of claim 7, wherein, The rear gripper drive mechanism further includes a rear connecting sliding device (325), which includes a limit cap (3251), a limit sliding rod (3252), a lifting rod (3253), and a rear connecting slider (3254); the rear gripper trigger plate (323) further includes a limit plate (3232), which has a limit sliding hole; the rear gripper (22) further includes a limit seat (224), which includes a groove, and the first clamping plate (221) and the second clamping plate (222) are located in the groove; The limiting slide bar (3252) is set vertically and inserted into the limiting slide hole, so that the limiting plate (3232) can slide up and down on the limiting slide bar (3252); The limit cap (3251) is located at the bottom of the limit slide bar (3252); The bottom of the lifting rod (3253) is fixedly connected to the top of the limiting slide rod (3252), and the top of the lifting rod (3253) is also fixedly connected to the limiting seat (224) of the rear gripper (22); The rear connecting slider (3254) is located between the lifting rod (3253) and the rear gripper trigger plate (323), and is slidably connected to the lifting rod (3253) and fixedly connected to the rear gripper trigger plate (323).

9. The cell placement platform of claim 6, wherein, The rear gripper drive mechanism also includes a rear connecting plate (326), which connects the rear lifting connector (322) and the rear gripper trigger plate (323). The rear lifting connector (322) includes a cam (3222); The rear connecting plate (326) is provided with a plurality of cam holes (3261) along the length direction of the welding strip, and the cam (3222) is connected in the cam hole (3261).

10. The cell placement platform of claim 1, wherein, The cell receiving platform (1) may be one or more, and the gripper pair (2) may be one or more pairs, with one pair of gripper pairs (2) corresponding to one cell receiving platform (1).

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