Battery string-forming composite platform
By designing a motion platform and a gripper drive mechanism on the battery stringing composite platform, the problem of damage during battery cell placement was solved, and a tight fit between the solder ribbon and the battery cell grid lines was achieved, thus improving the quality of battery stringing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU WISDOM VALLEY LASER INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-28
AI Technical Summary
On the battery stringing platform, the cells are prone to contact with the front grippers during placement, which can lead to damage. Furthermore, it is difficult to achieve a tight fit between the solder ribbon and the grid lines on the surface of the cells.
A battery stringing composite platform was designed, which uses components such as a motion platform, a stretching device, and a return cylinder. By moving the front gripper away from or closer to the battery cell, and in conjunction with the gripper drive mechanism, the platform achieves safe placement of the battery cell and effective clamping of the solder strip.
This reduces the probability of cell damage on the placement platform, improves the tight bonding between the solder ribbon and the grid lines on the cell surface, and increases the yield rate of cell strings.
Smart Images
Figure CN224178528U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery cell stringing technology, and in particular to a battery stringing composite 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 the existing technology, a composite platform is required to receive the solar cells and transport them to a location near the ribbon transport section to facilitate the placement of the ribbon on the solar cells. After the ribbon is placed on the solar cells, the solar cells and the ribbon on them need to be transported to a location near the membrane strip transport section to facilitate the attachment of the membrane strip to the solar cells, so that the ribbon adheres to the surface of the solar cells and the grid lines on the surface of the solar cells are tightly bonded.
[0004] In existing battery stringing platforms, there are several cell placement platforms. Each cell placement platform has a front clamp, a cell receiving platform, and a rear clamp. One end of the solder strip placed on the cell is a front-side bonding section that adheres to the front of the cell, while the other end extends beyond the edge of the cell to form a reserved section. This reserved section is used to connect to the back of the next cell, thus connecting adjacent cells to form a battery string. The front clamp holds the front-side bonding section of the solder strip, therefore it needs to be positioned close to the edge of the cell. During cell placement, the cell is prone to contact with the front clamp, leading to cell damage.
[0005] Therefore, there is an urgent need for a battery stringing composite platform that can move the front gripper away from the battery cell when placing the battery cell to facilitate placement, and move the front gripper closer to the battery cell when attaching the solder ribbon to facilitate holding the solder ribbon, thereby reducing the probability of damage to the battery cell when placed on the battery cell placement platform, and also facilitating the front gripper to hold the solder ribbon above the battery cell. Utility Model Content
[0006] The purpose of this invention is to solve the problem that battery cells are easily damaged by contact with the front grippers when placed on a battery cell placement platform. It provides a battery stringing composite platform in which the front grippers are moved away from the battery cells when placing them to facilitate placement, and the front grippers are moved closer to the battery cells when attaching solder ribbons to facilitate holding the solder ribbons. This reduces the probability of damage to the battery cells when placed on the battery cell placement platform and also makes it easier for the front grippers to hold the solder ribbons on top of the battery cells.
[0007] To solve the above-mentioned technical problems, as one aspect of this utility model, a battery stringing composite platform is provided, including: a motion platform, one or more battery cell placement platforms, a stretching device, a return cylinder, a battery cell placement station, a welding strip feeding station, and a battery cell flipping station.
[0008] The cell placement platform is placed on the motion platform, which moves the cell placement platform sequentially to the cell placement station, the ribbon feeding station, and the cell flipping station.
[0009] The stretching device is placed at the cell flipping station or on the motion platform, and the return cylinder is located between the cell placement station and the welding strip loading station.
[0010] The cell placement platform includes a cell receiving platform, a front gripper, and a rear gripper; the front gripper and the rear gripper are located on opposite sides of the cell receiving platform and are used to clamp or release the two ends of the welding strip.
[0011] When the cell placement platform moves to the cell placement and flipping station, the stretching device drives the front gripper to move away from the cell receiving platform along the length of the welding strip; when the cell placement platform moves to the position of the return cylinder, the return cylinder drives the front gripper to move closer to the cell receiving platform along the length of the welding strip.
[0012] According to an exemplary embodiment of this utility model, the motion platform is a turntable.
[0013] According to an example embodiment of the present invention, the battery stringing composite platform further includes a coating station, which is located upstream of the battery cell flipping station and downstream of the welding strip loading station.
[0014] According to an example embodiment of the present invention, the battery cell placement platform cyclically passes through the battery cell placement station, the welding strip loading station, the coating station, and the battery cell flipping station in sequence.
[0015] According to an exemplary embodiment of the present invention, the stretching device employs a stretching cylinder.
[0016] According to an exemplary embodiment of this utility model, both the front and rear grippers include a first clamping plate, a second clamping plate, and two gripper contacts. Multiple spaced-apart half-grips are provided on the top of both the first and second clamping plates. One side of the first clamping plate and one side of the second clamping plate slide against each other, allowing the first and second clamping plates to slide relative to each other, thereby clamping or releasing the two half-grips. The two gripper contacts 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 is achieved.
[0017] According to an example embodiment of the present invention, the battery stringing composite platform further includes two front gripper driving mechanisms, a first rear gripper driving mechanism, and a second rear gripper driving mechanism.
[0018] A front gripper drive mechanism and a first rear gripper drive mechanism are installed at the strip feeding station;
[0019] Another front gripper drive mechanism and a second rear gripper drive mechanism are installed at the cell flipping station;
[0020] The front gripper drive mechanism opens the front gripper by increasing the distance between the two gripper contacts;
[0021] The first rear gripper drive mechanism opens the rear gripper by increasing the distance between the two gripper contacts, and also drives the rear gripper to move away from or closer to the cell receiving platform along the length of the welding strip.
[0022] The second rear gripper drive mechanism opens the rear gripper by increasing the distance between the two gripper contacts.
[0023] According to an exemplary embodiment of the present invention, the front gripper drive mechanism includes a front drive cylinder and a front gripper trigger plate. The upper part of the front gripper trigger plate is a trigger ramp, the width of which gradually increases from top to bottom, and is located below the two gripper contacts. The front gripper trigger plate moves up and down under the drive of the front drive cylinder. 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 and realizing the opening of the front gripper.
[0024] According to an exemplary embodiment of the present invention, both the front gripper and the rear gripper further include a limiting seat, the limiting seat including a sliding groove, and the lower parts of the first clamping plate and the second clamping plate are located in the sliding groove.
[0025] According to an example embodiment of the present invention, when the battery cell placement platform moves to the battery cell flipping station, the stretching device pushes the limiting seat of the front gripper away from the battery cell receiving platform along the length of the welding strip; when the battery cell placement platform moves to the position of the return cylinder, the return cylinder pushes the limiting seat of the front gripper closer to the battery cell receiving platform along the length of the welding strip.
[0026] The beneficial effects of this utility model are:
[0027] In this invention, when placing the battery cell, the front gripper is moved away from the battery cell to facilitate placement. When attaching the solder ribbon, the front gripper is moved closer to the battery cell to facilitate holding the solder ribbon, reducing the probability of damage to the battery cell when placed on the battery cell placement platform, and also facilitating the front gripper to hold the solder ribbon above the battery cell. Attached Figure Description
[0028] Figure 1 The schematic diagram illustrates the structure of the battery string-to-string composite platform;
[0029] Figure 2 The schematic diagram shows the structure of the battery cell placement platform;
[0030] Figure 3 A schematic diagram of the structure of the battery cell placement platform (from another angle);
[0031] Figure 4 The diagram schematically illustrates the relationship between the front gripper and the front gripper trigger plate.
[0032] Figure 5 A schematic diagram of the front gripper and the front connecting sliding device is shown.
[0033] Wherein, 1—motion platform, 2—battery cell placement platform, 21—front gripper, 211—first clamping plate, 212—second clamping plate, 213—gripper contact, 214—limiting seat, 22—rear gripper, 23—battery cell receiving platform, 241—first rear drive cylinder, 242—rear lifting connector, 2421—sliding limiting protrusion, 2421—cam, 2422—transmission link, 2423—connector body, 243—first rear gripper trigger plate, 2431
[0034] —Rear trigger ramp, 2432—Rear limit plate, 244—Positioning frame, 2441—Sliding limit groove, 245—First rear connecting sliding device, 2451—Rear limit cap, 2452—Rear limit slide bar, 2453—Rear lifting rod, 2454—Rear connecting slider, 246—Rear connecting plate, 2461—Cam hole, 247—Third clamping plate, 251—Front gripper trigger plate, 2511—Front trigger ramp, 2512—Front limit plate, 252—Front connecting plate, 253—Front connecting sliding device, 2531—Front limit cap, 2532—Front limit slide bar, 2533—Front lifting rod, 2534—Front connecting slider, 4—Returning cylinder, 5—Battery cell placement station, 6—Battery cell flipping station, 7—Welding strip loading station, 8—Coating station. Detailed Implementation
[0035] 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.
[0036] 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.
[0037] The following example describes a battery stringing composite 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.
[0038] As the first embodiment of this utility model, a battery stringing composite platform is provided, such as... Figure 1 As shown, it includes: a motion platform 1, one or more battery cell placement platforms 2, a stretching device, a return cylinder 4, a battery cell placement station 5, a battery cell flipping station 6, a welding strip feeding station 7, a coating station 8, two front gripper drive mechanisms, a first rear gripper drive mechanism, a second rear gripper drive mechanism, and a reset device.
[0039] From upstream to downstream, the stations are: cell placement station 5, ribbon feeding station 7, film coating station 8, and cell flipping station 6. Figure 1 The unmarked workstations are buffer workstations.
[0040] The cell placement platform 2 is placed on the motion platform 1. The motion platform 1 cyclically moves the cell placement platform 2 through the cell placement station 5, the ribbon loading station 7, the coating station 8, and the cell flipping station 6. Figure 1 As shown, motion platform 1 is a turntable. The turntable rotates counterclockwise and passes sequentially through the cell placement station 5, the ribbon loading station 7, the coating station 8, and the cell flipping station 6.
[0041] The stretching device is placed at the cell flipping station 6 or on the motion platform 1. The stretching device uses a stretching cylinder. As a preferred embodiment, the stretching device has a gripper trigger and a stretching cylinder that is laterally connected to the gripper trigger. The gripper trigger pushes the front gripper 21 to move laterally.
[0042] The return cylinder 4 is located between the battery cell placement station 5 and the welding strip loading station 7.
[0043] like Figure 2 and Figure 3As shown, the cell placement platform 2 includes a cell receiving platform 23, a front gripper 21, and a rear gripper 22.
[0044] The front gripper 21 and the rear gripper 22 are located on opposite sides of the cell receiving platform 23 and are used to clamp or release the two ends of the welding strip.
[0045] The front gripper 21 and the rear gripper 22 have the same structure. For example... Figure 4 and Figure 5 As shown, the front gripper 21 includes a first gripper plate 211, a second gripper plate 212, two gripper contacts 213, and a limiting seat 214. Multiple spaced-apart half-grips are provided on the top of both the first gripper plate 211 and the second gripper plate 212. One side of the first gripper plate 211 and one side of the second gripper plate 212 slide against each other, allowing the first gripper plate 211 and the second gripper plate 212 to slide relative to each other, thus clamping or releasing the two half-grips. The two gripper contacts 213 are fixedly connected to the bottom of the first gripper plate 211 and the bottom of the second gripper plate 212, respectively. By adjusting the distance between the two gripper contacts 213, the relative sliding of the first gripper plate 211 and the second gripper plate 212 is achieved. The limiting seat 214 includes a sliding groove. The lower parts of the first clamping plate 211 and the second clamping plate 212 are placed in the sliding groove, and the upper parts are higher than the battery cell receiving platform 23. The sliding groove plays a limiting role. The sliding groove can move the first clamping plate 211 and the second clamping plate 212 away from or closer to the battery cell receiving platform 23.
[0046] When the cell placement platform 2 moves to the cell flipping station 6, the stretching device pushes the limiting seat 214 of the front gripper 21 away from the cell receiving platform 23 along the length of the welding strip. When the cell placement platform 2 moves to the position of the return cylinder 4, the return cylinder 4 pushes the limiting seat 214 of the front gripper 21 closer to the cell receiving platform 23 along the length of the welding strip. This achieves the following: when placing the cell, the front gripper 21 is moved away from the cell to facilitate cell placement; when adhering the welding strip, the front gripper 21 is moved closer to the cell to facilitate clamping the welding strip, reducing the probability of cell damage when placed on the cell placement platform 2, and facilitating the clamping of the welding strip above the cell by the front gripper 21.
[0047] A front gripper drive mechanism and a first rear gripper drive mechanism are installed at the strip feeding station 7; another front gripper drive mechanism and a second rear gripper drive mechanism are installed at the cell flipping station 6.
[0048] The front gripper drive mechanism opens the front gripper 21 by increasing the distance between the two gripper contacts 213. For example... Figure 4 and Figure 5As shown, the front gripper drive mechanism includes a front drive cylinder, a front gripper trigger plate 251, and a front connecting sliding device 253. The upper part of the front gripper trigger plate 251 is a trigger ramp 2511, the width of which gradually increases from top to bottom, and is located below the two gripper contacts 213. Driven by the front drive cylinder, the front gripper trigger plate 251 moves up and down. When moving upwards, the trigger ramp 2511 extends into the middle of the two gripper contacts 213, pushing the two gripper contacts 213 to both sides, increasing the distance between the two gripper contacts 213, thus opening the front gripper 21. When moving downwards, the two gripper contacts 213 return to their original position, and the front gripper 21 closes. The lower part of the front gripper trigger plate 251 is provided with a horizontally positioned front limit plate 2512, which has a limit sliding hole.
[0049] like Figure 4 and Figure 5 As shown, the front connecting sliding device 253 includes a front limiting cap 2531, a front limiting slide bar 2532, a front lifting rod 2533, and a front connecting slider 2534. The front limiting slide bar 2532 is vertically arranged and inserted into the limiting slide hole of the front limiting plate 2512, allowing the front limiting plate 2512 to slide up and down on the front limiting slide bar 2532. The front limiting cap 2531 is located at the bottom of the front limiting slide bar 2532, enabling the front limiting plate 2512 to slide within a limited range. The bottom of the front lifting rod 2533 is fixed and coaxially connected to the top of the front limiting slide bar 2532, and the top of the front lifting rod 2533 is also detachably connected to the limiting seat 214 of the front gripper 21, preferably magnetically snapped together. The diameter of the front limiting slide bar 2532 is smaller than the diameter of the front lifting rod 2533. The front connecting slider 2534 is located between the front lifting rod 2533 and the front gripper trigger plate 251, sliding vertically with the front lifting rod 2533 and fixedly connected to the front gripper trigger plate 251. When the front gripper 21 moves away from the rear gripper 22, the front lifting rod 2533 engages with the limiting seat 214 of the front gripper 21, and the front gripper 21 drives the front gripper trigger plate 251 and the front connecting sliding device 253 to move in the same direction. A reset device is installed on the battery cell flipping station 6 to move the front gripper trigger plate 251 back to its original position. The reset device is either a cylinder reset device or a spring reset device.
[0050] In a preferred embodiment, the front gripper drive mechanism further includes a front connecting plate 252. One cell receiving platform 23 corresponds to one front gripper 21 and one rear gripper 22, forming a gripper pair. If a cell placement platform 2 has multiple cell receiving platforms 23 and multiple gripper pairs, with multiple front grippers 21 and one front connecting plate 252 connecting multiple front gripper trigger plates 251, it is possible to simultaneously control multiple front grippers 21 with one front drive cylinder, one stretching device, and one return cylinder 4. In a preferred embodiment, there are two gripper pairs, with one front connecting plate 252 connecting two front gripper trigger plates 251, each connected to one end of the front connecting plate 252.
[0051] The first rear gripper drive mechanism opens the rear gripper 22 by increasing the distance between the two gripper contacts, and drives the rear gripper 22 away from or towards the cell receiving platform 23 along the length of the welding strip. When the rear gripper 22 moves away from the cell receiving platform 23, the gripped welding strip becomes taut. Figure 2 and Figure 3 As shown, the first rear gripper drive mechanism includes a first rear drive cylinder 241, a rear lifting connector 242, a first rear gripper trigger plate 243, a positioning frame 244, a first rear connecting sliding device 245, a rear connecting plate 246, and two third clamping plates 247.
[0052] The extension and retraction direction of the first rear drive cylinder 241 is consistent with the length direction of the welding strip. Two third clamping plates 247 are fixed on the moving end of the first rear drive cylinder 241. The third clamping plates 247 are slidably connected to the lower part of the rear lifting connector 242, and the lower part of the rear lifting connector 242 is located between the two third clamping plates 247. Driven by the first rear drive cylinder 241, the two third clamping plates 247 drive the rear lifting connector 242 to move back and forth along the length direction of the welding strip. The rear lifting connector 242 includes a sliding limit protrusion 2421, a cam 2422, a transmission connecting rod 2423, and a connector body 2424. The connector body 2424 is located above the first rear drive cylinder 241 and between the two positioning plates of the positioning frame 244. The lower part of the connector body 2424 is located between the two third clamping plates 247 and is slidably connected to the third clamping plates 247. The upper part of the connector body 2424 is fixedly connected to the first rear gripper trigger plate 243. Sliding limit protrusions 2421 are located on both sides of the lower part of the connector body 2424; this design has four sliding limit protrusions 2421, two on each side. A cam 2422 is located on the top of the rear lifting connector 242 and is connected to the connector body 2424 via a vertically arranged transmission link 2423.
[0053] The positioning frame 244 includes a positioning plate with a sliding limiting groove 2441. The sliding limiting groove 2441 extends along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 23 and downwards. In a preferred embodiment, at the extended end of the sliding limiting groove 2441, it only extends along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 23, making the sliding limiting groove 2441 resemble the side profile of an escalator. The sliding limiting protrusion 2421 slides within the sliding limiting groove 2441, achieving a sliding connection between the rear lifting connector 242 and the positioning frame 244 along the length of the welding strip and in the vertical direction. This allows the first rear drive cylinder 241 to drive the rear lifting connector 242 to move along the length of the welding strip while simultaneously driving the rear lifting connector 242 to move vertically. The positioning plate in this solution consists of two pieces. The third clamping plate 247 and the positioning plate are both set vertically, but the positioning plate is perpendicular to the third clamping plate 247. The lower part of the connector body 2424 is located between the two positioning plates. There are four sliding limit grooves 2441 in total. There are two sliding limit grooves 2441 on each positioning plate, and each sliding limit groove 2441 corresponds to a sliding limit protrusion 2421.
[0054] The rear connecting plate 245 connects the rear lifting connector 242 and the first rear gripper trigger plate 243. The rear connecting plate 245 has multiple cam holes 2451 along the length of the weld strip. Cams 2422 are connected to the cam holes 2451. In a preferred embodiment, the cam 2422 is connected to the cam hole 2451 in the middle of the rear connecting plate 245. When a problem occurs in the connection between the cam 2422 and the cam hole 2451 (e.g., abnormal noise), the connected cam hole 2451 is replaced.
[0055] The first rear gripper trigger plate 243 and the rear lifting connector 242 are fixedly connected via a rear connecting plate 245, and the lower part of the first rear gripper trigger plate 243 is fixedly connected to one end of the rear connecting plate 245. One cell receiving platform 23 corresponds to one front gripper 21 and one rear gripper 22, forming a gripper pair. If a cell placement platform 2 has multiple cell receiving platforms 23 and multiple gripper pairs, with multiple rear grippers 22, and one rear connecting plate 245 connecting multiple first rear gripper trigger plates 243, one drive mechanism can simultaneously control multiple rear grippers 22. In a preferred embodiment, there are two gripper pairs, with one rear connecting plate 245 connecting two first rear gripper trigger plates 243, and the two first rear gripper trigger plates 243 respectively connected to both ends of the rear connecting plate 245.
[0056] The structure of the first rear gripper trigger plate 243 is the same as that of the front gripper trigger plate 25.
[0057] like Figure 2 and Figure 3As shown, the structure of the first rear connecting sliding device 245 is the same as that of the front connecting sliding device 253. The first rear connecting sliding device 245 includes a rear limiting cap 2451, a rear limiting slide rod 2452, a rear lifting rod 2453, and a rear connecting slider 2454. The rear limiting slide rod 2452 is vertically arranged and inserted into the limiting slide hole of the rear limiting plate 2432, so that the rear limiting plate 2432 can slide up and down on the rear limiting slide rod 2452. The rear limiting cap 2451 is located at the bottom of the rear limiting slide rod 2452, realizing the limited sliding range of the rear limiting plate 2432. The bottom of the rear lifting rod 2453 is fixed and coaxially connected to the top of the rear limiting slide rod 2452, and the top of the rear lifting rod 2453 is also detachably connected to the limiting seat of the rear gripper 22, preferably magnetically snapped together. The diameter of the rear limiting slide rod 2452 is smaller than the diameter of the rear lifting rod 2453. The rear connecting slider 2454 is located between the rear lifting rod 2453 and the first rear gripper trigger plate 243, and is slidably connected to the rear lifting rod 2453 and fixedly connected to the first rear gripper trigger plate 243. Meanwhile, since the sliding limiting groove 2441 extends along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 23, and also extends downwards, when the sliding limiting protrusion 2421 moves downwards, the first rear gripper trigger plate 243 moves in the same direction, causing the rear triggering inclined surface 2431 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 2421 moves along the length of the welding strip towards the rear gripper 22 away from the battery cell receiving platform 23, the first rear gripper trigger plate 243 moves in the same direction, driving the rear gripper 22 to move in the same direction, achieving tensioning of the welding strip by the rear gripper 22.
[0058] Since tightening the welding strip only requires one clamp to be moved away from the cell receiving platform 23, only the rear clamp 22 needs to move during the tightening process. However, when the cell needs to be placed or flipped, since the front clamp 21 is relatively close to the cell, a stretching device is needed to move the front clamp 21 away from the cell receiving platform 23 separately. Before clamping the welding strip, the return cylinder 4 needs to be used to bring the front clamp 21 closer to the cell receiving platform 23.
[0059] Since the tensioning of the welding strip only needs to be performed at the welding strip loading station 7, it is not necessary to tension the welding strip at the cell flipping station 6. The structure of the second rear gripper drive mechanism is the same as that of the front gripper drive mechanism. The opening of the rear gripper 22 is achieved by increasing the distance between the two gripper contacts. The second rear gripper drive mechanism includes a second rear drive cylinder, a second rear gripper trigger plate, and a second rear connecting sliding device. The structure of the second rear drive cylinder is the same as that of the front drive cylinder, the structure of the second rear gripper trigger plate is the same as that of the front gripper trigger plate 251, and the structure of the second rear connecting sliding device is the same as that of the front connecting sliding device 253.
[0060] The principle of this scheme is:
[0061] The motion platform 1 moves the cell placement platform 2 from the cell flipping station 6 to the cell placement station 5. At this time, the front gripper 21 and the rear gripper 22 are in a closed state, with the front gripper 21 moving away from the cell receiving platform 23 and the rear gripper 22 moving away from the cell receiving platform 23. The cell is then placed on the cell receiving platform 23.
[0062] The motion platform 1 moves, and the cell placement platform 2 moves to the position of the return cylinder 4. The return cylinder 4 drives the front connecting plate to move along the length of the welding strip, causing the front gripper 21 to approach the cell receiving platform 21. This positions the front gripper 21 at the edge of the cell, with the gripping part above the cell, facilitating the front gripper 21 to pick up the welding strip placed above the cell when the cell placement platform 2 is at the welding strip loading station 7. At this time, the front gripper 21 and the rear gripper 22 remain in a closed state.
[0063] The motion platform 1 continues to move, and the cell placement platform 2 moves to the ribbon loading station 7. The front gripper drive mechanism drives the front gripper 21 to open. The rear lifting rod 2453 connects to the limiting seat of the rear gripper 22. The first rear gripper drive mechanism drives the rear gripper 22 to open and move closer to the cell receiving platform 23, but the rear gripper 22 is not located at the edge of the cell. The ribbon is placed on the cell, with both ends of the ribbon located between the front gripper 21 and the rear gripper 22. The front drive cylinder moves down, causing the front gripper trigger plate 251 to move down, and the front gripper 21 clamps the front end of the ribbon. Simultaneously, the moving end of the first rear drive cylinder 241 moves away from the front gripper 21, causing the rear lifting connector 242 to move downwards and away from the front gripper 21. This causes the first rear gripper trigger plate 243 connected to the rear gripper 22 to move downwards and away from the front gripper 21. The rear gripper 22 clamps and moves away from the front gripper 21, tautning the welding strip placed on the cell receiving platform 23, facilitating close contact between the welding strip and the grid lines on the cell. The rear lifting rod 2453 is removed from the limiting seat of the rear gripper 22, and the rear gripper 22 remains in a position away from the cell receiving platform 23.
[0064] The motion platform 1 continues to move, and the cell placement platform 2 moves to the coating station 8, where the film strip is attached to the welding strip on the cell, keeping the welding strip in contact with the cell.
[0065] The motion platform 1 continues to move, while the cell placement platform 2 moves to the cell flipping station 6. The front gripper drive mechanism drives the front gripper 21 to open, while the rear gripper 22 remains in a position away from the cell receiving platform 23. The second rear gripper drive mechanism then drives the rear gripper 22 to open. The front lifting rod 2533 connects to the limit seat 214 of the front gripper. The tensioning device pushes the front gripper 21 to move away from the cell receiving platform 23 along the length of the welding strip. The front gripper trigger plate 251 follows the front gripper 21 and moves in the same direction. The cell with one side of the welding strip attached is flipped and transported to the subsequent processing step. The front gripper drive mechanism drives the front gripper 21 to close, and the second rear gripper drive mechanism drives the rear gripper 22 to close. The reset device resets the front gripper trigger plate 251. This completes one cycle of the battery stringing composite platform.
[0066] When placing and flipping the battery cell, the front gripper 21 is moved away from the battery cell to facilitate the placement of the battery cell 21. When attaching the solder ribbon, the front gripper 21 is moved closer to the battery cell to facilitate the clamping of the solder ribbon, reduce the probability of damage to the battery cell when it is placed on the battery cell placement platform 2, and facilitate the front gripper 21 to clamp the solder ribbon above the battery cell.
[0067] Meanwhile, after the welding strip is placed on the cell receiving platform 23, in addition to clamping and releasing the two ends of the welding strip, the front gripper drive mechanism and the rear gripper drive mechanism also drive the rear gripper 22 away from or closer to the cell receiving platform 23. After the welding strip is placed on the cell receiving platform 23, the front gripper 21 and the rear gripper 22 clamp the welding strip, and the rear gripper 22 moves away from the front gripper 21, thereby tightening the welding strip, which facilitates the contact between the welding strip and the grid lines on the cell, and improves the yield of the cell string.
[0068] 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 battery stringing composite platform, characterized in that, include: Motion platform (1), one or more battery cell placement platforms (2), stretching device, return cylinder (4), battery cell placement station (5), welding strip feeding station (7) and battery cell flipping station (6). The cell placement platform (2) is placed on the motion platform (1), and the motion platform (1) moves the cell placement platform (2) sequentially to the cell placement station (5), the ribbon loading station (7), and the cell flipping station (6). The stretching device is located at the cell flipping station (6) or on the motion platform (1), and the return cylinder (4) is located between the cell placement station (5) and the welding strip loading station (7). The cell placement platform (2) includes a cell receiving platform (23), a front clamp (21), and a rear clamp (22); the front clamp (21) and the rear clamp (22) are located on opposite sides of the cell receiving platform (23) and are used to clamp or release the two ends of the welding strip. When the cell placement platform (2) moves to the cell flipping station (6), the stretching device drives the front gripper (21) to move away from the cell receiving platform (23) along the length of the welding strip; when the cell placement platform (2) moves to the position of the return cylinder (4), the return cylinder (4) drives the front gripper (21) to move closer to the cell receiving platform (23) along the length of the welding strip.
2. The battery stringing composite platform according to claim 1, characterized in that, The motion platform (1) is a turntable.
3. The battery stringing composite platform according to claim 1, characterized in that, It also includes a coating station (8), which is located upstream of the cell flipping station (6) and downstream of the ribbon feeding station (7).
4. The battery stringing composite platform according to claim 3, characterized in that, The cell placement platform (2) cycles through the cell placement station (5), the ribbon feeding station (7), the coating station (8), and the cell flipping station (6) in sequence.
5. The battery stringing composite platform according to claim 1, characterized in that, The stretching device uses a stretching cylinder.
6. The battery stringing composite platform according to claim 1, characterized in that, The front gripper (21) and the rear gripper (22) each include a first clamping plate (211), a second clamping plate (212), and two gripper contacts (213). The top of the first clamping plate (211) and the second clamping plate (212) are provided with multiple spaced half-grips. One side of the first clamping plate (211) and one side of the second clamping plate (212) slide against each other, so that the first clamping plate (211) and the second clamping plate (212) slide relative to each other, thereby clamping or releasing the two half-grips. The two gripper contacts (213) are fixedly connected to the bottom of the first clamping plate (211) and the bottom of the second clamping plate (212), respectively. By adjusting the distance between the two gripper contacts (213), the relative sliding of the first clamping plate (211) and the second clamping plate (212) can be achieved.
7. The battery stringing composite platform according to claim 6, characterized in that, It also includes two front gripper drive mechanisms, a first rear gripper drive mechanism, and a second rear gripper drive mechanism; A front gripper drive mechanism and a first rear gripper drive mechanism are installed at the strip feeding station (7). Another front gripper drive mechanism and a second gripper drive mechanism are set at the cell flipping station (6). The front gripper drive mechanism opens the front gripper (21) by increasing the distance between the two gripper contacts (213); The first rear gripper drive mechanism opens the rear gripper (22) by increasing the distance between the two gripper contacts (213), and also drives the rear gripper (22) to move away from or closer to the cell receiving platform (23) along the length of the welding strip. The second rear gripper drive mechanism opens the rear gripper (22) by increasing the distance between the two gripper contacts (213).
8. The battery stringing composite platform according to claim 7, characterized in that, The front gripper drive mechanism includes a front drive cylinder and a front gripper trigger plate (251). The upper part of the front gripper trigger plate (251) is a trigger ramp, the width of which gradually increases from top to bottom, and it is located below the two gripper contacts (213). The front gripper trigger plate (251) moves up and down under the drive of the front drive cylinder. When it moves upward, the trigger ramp extends into the middle of the two gripper contacts (213) and pushes the two gripper contacts (213) out to both sides, increasing the distance between the two gripper contacts (213) and realizing the opening of the front gripper (21).
9. The battery stringing composite platform according to claim 6, characterized in that, Both the front gripper (21) and the rear gripper (22) further include a limiting seat (214), which includes a groove, and the lower parts of the first clamping plate and the second clamping plate are located in the groove.
10. The battery stringing composite platform according to claim 7, characterized in that, When the cell placement platform (2) moves to the cell flipping station (6), the stretching device pushes the limiting seat of the front gripper away from the cell receiving platform (23) along the length of the welding strip; when the cell placement platform (2) moves to the position of the return cylinder (4), the return cylinder (4) pushes the limiting seat of the front gripper closer to the cell receiving platform (23) along the length of the welding strip.