Tool transverse moving device, battery piece stringing equipment and stringing method
By adjusting the relative position of the tooling and the welding strip using a tooling lateral movement device, the problem of stringing difficulties caused by the compact structure of the battery string was solved, achieving the effect of saving welding strip usage and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2026-03-27
AI Technical Summary
The existing battery string structure is compact, and the tooling gap between two adjacent battery cells is insufficient to accommodate the clamping components of the traction device, which makes it impossible to apply the battery cell stringing process to the compact battery string structure.
The tooling is traversed, including a traversing mechanism, a lifting mechanism and a raising mechanism. The relative position of the tooling and the welding strip is adjusted by traversing and lifting the tooling, ensuring that the gap between adjacent tooling is sufficient to accommodate the clamping components of the traction device, and the welding strip is kept pressed by magnetic adsorption positioning and elastic pressure pins.
This enabled the successful stringing of compact battery strings, saving on the amount of solder ribbon used and reducing the production cost of the battery strings.
Smart Images
Figure CN121751787A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic cell production equipment technology, specifically a tooling transverse transfer device, a cell stringing device, and a stringing method. Background Technology
[0002] When making battery strings, battery cells and welding ribbons need to be laid on a conveyor line. The conveyor line transports the laid battery cells and welding ribbons to the bottom of the curing device for curing to obtain battery strings.
[0003] Taking the laying of welding strips on both the upper and lower surfaces of a solar cell as an example, the first set of welding strips is laid at the laying station on the conveyor line using a traction device. Then, the first solar cell is laid on the latter half of the first set of welding strips using a transport device. The traction device then lays the second set of welding strips at the laying station, ensuring that the first half of the second set of welding strips is on the first solar cell. The transport device then presses a fixture onto the first half of the second set of welding strips to compress it firmly onto the first solar cell. Simultaneously, the transport device lays the second solar cell on the latter half of the second set of welding strips. After the fixture is pressed down, the traction device releases the second set of welding strips. Subsequently, the conveyor belt is controlled to advance once, allowing the second solar cell to enter the laying station. Then, the third set of welding strips is laid at the laying station again, and this cycle continues until the laying of the solar cell string is completed.
[0004] To prevent the welding ribbon from flipping or shifting position when it falls onto the battery cell, starting from the laying of the second set of welding ribbons, the tooling is pressed onto the first half of the welding ribbon before the traction device releases the end of the welding ribbon. For example... Figure 1 and Figure 2 As shown, to prevent the tooling from touching the traction device during the pressing process, sufficient space needs to be left between the end of the first half of the welding strip 200 laid on the cell 100 and the pre-placement position of the tooling 300 to accommodate the clamping components of the traction device 30. However, some existing battery strings have a compact structure, and the gap between the tooling on two adjacent cells is insufficient to accommodate the clamping components of the traction device, making it impossible to apply the above-mentioned cell stringing process to compact battery strings. Summary of the Invention
[0005] To solve the above-mentioned technical problems, this application provides a battery string arrangement and feeding device, which adopts the following technical solution:
[0006] A tooling traversing device includes a mounting base, a traversing mechanism, a lifting mechanism, and a hoisting mechanism, wherein:
[0007] The lateral movement mechanism is located at the bottom of the mounting base;
[0008] The lifting mechanism is connected to the moving parts of the traversing mechanism;
[0009] The lateral movement mechanism and the lifting mechanism are configured to cooperate in driving the lifting mechanism to lateral movement and lifting, so as to lift the tooling and then lower the tooling back down after moving it laterally a predetermined distance in the first direction.
[0010] The tooling lateral movement device provided in this application can lift the tooling placed on the welding strip and solar cells, and then move the lifted tooling laterally a predetermined distance along the length of the welding strip before repositioning it onto the welding strip and solar cells. Therefore, during the battery string laying process, when the handling device places the tooling onto the welding strip and solar cells, the distance between the tooling and the front half of the welding strip can be greater than the target distance. Subsequently, before the welding strip is cured, the tooling lateral movement device of this application is used to move the tooling laterally to adjust the distance between the tooling and the front half of the welding strip to the target distance.
[0011] By employing the tooling traversing device provided in this application, the gap between the tooling on adjacent battery cells increases during the battery string laying process. This gap is sufficient to accommodate the clamping components of the traction device, ultimately ensuring that the battery cell stringing equipment can successfully string the compact battery cells. Furthermore, during the battery string laying process, no extra length of welding ribbon is required, thus saving welding ribbon usage and reducing the production cost of the battery strings.
[0012] In some embodiments, the lifting mechanism includes a mounting plate, a first lifting block, and a second lifting block, wherein: the mounting plate is connected to a movable component of the lifting mechanism; the first lifting block and the second lifting block are respectively disposed at both ends of the mounting plate, and the second lifting block has the same structure as the first lifting block; the first lifting block includes a vertical connecting portion and a horizontal lifting portion, the upper end of the connecting portion is connected to the mounting plate, and the lifting portion is connected to the lower end of the connecting portion; when the lifting mechanism drives the mounting plate to rise, the lifting portion lifts the fixture; the lifting mechanism is configured to drive the mounting plate to rise to a predetermined height, so as to drive the first lifting block and the second lifting block to lift the fixture from both ends.
[0013] The tooling is generally provided with stepped sections at both ends. The lifting mechanism is configured to consist of a mounting plate, a first lifting block, and a second lifting block. The mounting plate is driven to move towards the tooling by the transverse mechanism, so that the lifting parts of the first and second lifting blocks can move to below the stepped sections at both ends of the tooling. Then, the lifting mechanism drives the mounting plate to rise, which can drive the first and second lifting blocks to lift the tooling from both ends.
[0014] In some embodiments, the lifting part is provided with a mounting groove, and a magnet for adsorbing the tooling is installed in the mounting groove.
[0015] By setting magnets on the lifting part, the lifted tooling is attracted and positioned, preventing the tooling from shifting during the lateral movement, which would prevent the effective clamping of the welding strip after the tooling is lowered back down.
[0016] In some embodiments, during the process of the transverse mechanism transversely moving the fixture along the first direction, the clamping part on the fixture for clamping the welding strip remains in contact with the welding strip below.
[0017] This setup allows the tooling to continuously compress the solder strip during lateral movement, preventing the solder strip from shifting or deviating from the solder pad.
[0018] In some embodiments, the tooling includes a tooling bracket and a clamping part mounted on the tooling bracket. The clamping part is an elastic pressure needle, which extends downward from the tooling bracket in a free state. During the process of the transverse mechanism transversely moving the tooling along the first direction, the tooling bracket disengages from the conveying surface of the conveying tooling, and the elastic pressure needle remains in contact with the corresponding welding strip.
[0019] During the battery string laying process, after the handling device presses the tooling onto the welding strip and battery cells, the elastic pressure pins contract under pressure. When the lifting mechanism lifts the tooling upwards, the elastic pressure pins release pressure and rebound, thus maintaining contact with the corresponding welding strip.
[0020] In some embodiments, the lateral movement mechanism includes a lateral slide rail, a connecting plate, and a lateral movement drive module. The lateral slide rail is mounted on the bottom of the mounting base along a first direction. The connecting plate is slidably connected to the lateral slide rail and connected to the drive end of the lateral movement drive module. The lateral movement drive module is used to drive the connecting plate to slide along the lateral slide rail. The lifting mechanism includes a vertical slide rail and a lifting drive module. The vertical slide rail is mounted on the connecting plate along a vertical direction. The lifting mechanism is slidably connected to the vertical slide rail and connected to the drive end of the lifting drive module. The lifting drive module is used to drive the lifting mechanism to slide up and down along the vertical slide rail.
[0021] By configuring the lateral movement mechanism and the lifting mechanism, it is ensured that the lateral movement mechanism and the lifting mechanism can smoothly drive the lifting mechanism to move laterally and move up and down, preventing the lifting mechanism from deviating.
[0022] In some embodiments, the lateral drive module includes a drive motor, a drive pulley, a driven pulley, and a timing belt, wherein: the drive pulley and the driven pulley are arranged laterally at intervals on the mounting base, the timing belt is sleeved on the drive pulley and the driven pulley, the connecting plate is fixedly connected to one side of the timing belt, and the drive motor drives the drive pulley to rotate so as to drive the timing belt to rotate.
[0023] A simple and stable lateral movement drive module is provided, which drives the synchronous belt to rotate via a drive motor to drive the lateral movement of the lifting mechanism, ensuring that the lifting mechanism moves the tooling a predetermined distance laterally and then lowers it back down.
[0024] In some embodiments, the lifting mechanism further includes a limiting plate disposed on the connecting plate and located above the lifting mechanism, the limiting plate being used to limit the upward stroke of the lifting mechanism, and the lifting drive module being a cylinder.
[0025] It achieves a limit on the upward stroke of the lifting mechanism, preventing the lifting mechanism from having an excessive upward stroke, which would cause the clamping part of the tooling to completely detach from the welding strip.
[0026] This application also provides a battery cell stringing device, which includes a conveyor line, a traction device, a handling device, a curing device, and a tooling traversing device as described in any one of the above, wherein:
[0027] The conveyor line is used to transport battery cells, welding strips and tooling. The conveyor line is equipped with a laying station, a transverse moving station and a curing station in sequence along the conveying path in the first direction.
[0028] The traction device is configured to clamp the end of the welding strip and lay the first half of the welding strip onto the battery cell located at the laying station, while the second half of the welding strip is laid onto the conveyor line.
[0029] The conveying device is configured to press the tooling onto the first position on the front half of the welding strip, and the traction device is configured to release the end of the welding strip;
[0030] The conveying device is also configured to lay the next cell onto the latter half of the welding strip;
[0031] The conveyor line is configured to move forward in a stepping manner, so that as the cell at the laying position moves forward, the next cell moves to the laying position.
[0032] The tooling traverse device is located above the traverse station. The tooling traverse device is configured to move the tooling on the cell at the traverse station laterally a predetermined distance along the conveying direction of the conveyor line and then press the tooling back onto the second position on the front half of the welding strip.
[0033] The distance between the tooling in the first position and the front half of the welding strip is greater than the distance between the tooling in the second position and the front half of the welding strip.
[0034] The curing device is located above the curing station and is configured to fix the solder ribbon located at the curing station to the corresponding solar cell.
[0035] The battery cell stringing equipment provided in this application allows for a distance greater than the target distance between the tooling and the front half of the welding strip when the transport device presses the tooling onto the welding strip and battery cells during the battery string laying process. When the tooling is transported to the curing station, the curing device laterally moves the tooling to adjust the distance between the tooling and the front half of the welding strip to the target distance, thereby ensuring that the welding strip is cured on the corresponding battery cell as predetermined.
[0036] Using the battery cell stringing equipment of this application, the gap between the tooling on two adjacent battery cells increases during the battery string laying process. This gap is sufficient to accommodate the clamping components of the traction device, ultimately ensuring that the battery cell stringing equipment can successfully string compact battery cells. In addition, during the battery string laying process, no extra length of welding ribbon is required, thereby saving welding ribbon usage and reducing the production cost of battery strings.
[0037] This application also provides a method for stringing solar cells, which includes:
[0038] Clamp the end of the i-th group of welding strips and pull the first half of the i-th group of welding strips along the first direction to the (i-1)-th cell, where i is a natural number;
[0039] The (i-1)th tooling is placed on the front half of the i-th group of welding strips and the (i-1)th battery cell. The (i-1)th tooling presses the front half of the i-th group of welding strips onto the upper surface of the (i-1)th battery cell. At this time, the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is the first distance.
[0040] Place the i-th cell on the latter half of the i-th group of solder strips;
[0041] The i-th group of welding strips, the (i-1)-th tooling, the (i-1)-th solar cell, and the i-th solar cell are conveyed forward along the first direction;
[0042] The tooling is lifted and moved forward along the first direction relative to the (i-1)th battery cell and the i-th group of welding strips, so that the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is adjusted to a second distance, which is less than the first distance.
[0043] The battery cell stringing method provided in this application increases the gap between the tooling on adjacent battery cells during the battery string laying process. This gap is sufficient to accommodate the clamping components of the traction device, ultimately ensuring that the battery cell stringing equipment can successfully string compact battery cells. Furthermore, during the battery string laying process, no extra length of welding ribbon is required, thereby saving welding ribbon usage and reducing the production cost of the battery cells.
[0044] In some embodiments, when the (i-1)th tooling is lifted and moves forward along the first direction relative to the (i-1)th battery cell and the (i-1)th group of welding strips, the (i-1)th tooling always presses the (i-1)th group of welding strips onto the (i-1)th battery cell.
[0045] This allows the tooling to continuously compress the welding strip during the lateral movement, preventing the welding strip from shifting.
[0046] In some embodiments, the battery cell stringing method uses a traction device to clamp the end of the i-th group of welding strips and pull the first half of the i-th group of welding strips along a first direction onto the (i-1)-th battery cell; when the distance from the front end face of the (i-1)-th tool along the first direction to the front end face of the (i-1)-th battery cell along the first direction is a first distance, the spacing between the (i-1)-th tool and the (i-2)-th tool is greater than the dimension of the clamping component of the traction device along the first direction; when the distance from the front end face of the (i-1)-th tool along the first direction to the front end face of the (i-1)-th battery cell along the first direction is a second distance, the spacing between the (i-1)-th tool and the (i-2)-th tool is less than the dimension of the clamping component of the traction device along the first direction.
[0047] This configuration ensures that when the current tooling is placed, the gap between it and the previous tooling is large enough to accommodate the clamping components of the traction device. Attached Figure Description
[0048] Figure 1 This is a schematic diagram illustrating the process of a traction device laying welding strips onto a battery cell in the prior art.
[0049] Figure 2 This is a schematic diagram illustrating the process of placing tooling onto battery cells and welding strips using an existing electrical handling device.
[0050] Figure 3 This is a schematic diagram of the tooling transverse movement device in the embodiments of this application from one perspective;
[0051] Figure 4 This is a schematic diagram of the tooling transverse movement device in an embodiment of this application from another perspective;
[0052] Figure 5 This is a schematic diagram of the tooling transverse movement device without the mounting base in the embodiments of this application;
[0053] Figure 6 This is a schematic diagram of the structure of the first lifting block in an embodiment of this application;
[0054] Figure 7 This is a schematic diagram of the battery cell stringing process according to an embodiment of this application;
[0055] Figure 8 This is a schematic diagram illustrating the state in which the traction device lays the welding strip onto the battery cell in an embodiment of this application;
[0056] Figure 9 This is a schematic diagram illustrating the state in which the conveying device places the tooling onto the battery cells and welding strips in an embodiment of this application;
[0057] Figure 10 This is a schematic diagram showing the tooling lateral movement device in this application returning the tooling to the battery cell and solder strip after lateral movement.
[0058] Figures 1 to 10 Includes:
[0059] Tooling transverse movement device 10:
[0060] Mounting base 1;
[0061] Horizontal movement mechanism 2: horizontal slide rail 21, connecting plate 22, horizontal movement drive module 23, drive motor 231, driving pulley 232, driven pulley 233, synchronous belt 234;
[0062] Lifting mechanism 3: vertical slide rail 31, lifting drive module 32, limit plate 33;
[0063] Lifting mechanism 4: mounting plate 41, first lifting block 42, second lifting block 43, connecting part 421, water lifting part 422, mounting groove 423;
[0064] Conveyor line 20;
[0065] Traction device 30;
[0066] Handling device 40;
[0067] Curing device 50;
[0068] Solar cell 100, first solar cell 100-1, second solar cell 100-2, third solar cell 100-3;
[0069] Welding strip 200, Group 1 welding strip 200-1, Group 2 welding strip 200-2, Group 3 welding strip 200-3, Group 4 welding strip 200-4;
[0070] Tooling 300, step section 301, first tooling 300-1, second tooling 300-2. Detailed Implementation
[0071] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0072] like Figures 3 to 5 As shown, the tooling transverse movement device 10 in this embodiment includes a mounting base 1, a transverse movement mechanism 2, a lifting mechanism 3, and a raising mechanism 4, wherein:
[0073] The transverse movement mechanism 2 is located at the bottom of the mounting base 1.
[0074] The lifting mechanism 3 is connected to the moving part of the transverse mechanism 2.
[0075] The lateral movement mechanism 2 and the lifting mechanism 3 are configured to cooperate in driving the lifting mechanism 4 to move laterally and lift, so as to lift the tooling by the lifting mechanism 4 and to move the tooling laterally a predetermined distance along a first direction (such as the X direction) and then put it down again.
[0076] The tooling lateral movement device 10 provided in this application embodiment can lift the tooling that is pressed on the welding strip and the battery cell, and can move the lifted tooling laterally a predetermined distance along the first direction (i.e. the length direction of the welding strip) and then press it back onto the welding strip and the battery cell.
[0077] like Figures 8 to 9 As shown, during the battery string laying process, when the transport device presses the tooling 300 onto the welding strip 200 and the battery cell 100, the distance D between the tooling 300 and the front half of the welding strip 200 is greater than the target distance d, so that the distance between the currently placed tooling 300 and the previous tooling 300 can accommodate the clamping component of the traction device 30, preventing the tooling 300 from colliding with the traction device 30.
[0078] like Figure 10 As shown, before the subsequent curing of the welding strip, the tooling 300 is moved laterally by the tooling lateral movement device 10 in this embodiment of the application to adjust the distance between the tooling 300 and the front half end of the welding strip 200 to the target distance d, so as to ensure that the tooling 300 can press the front half of the welding strip 200 onto the corresponding welding pad on the upper surface of the battery cell, and ultimately ensure the quality of the battery string.
[0079] As can be seen, after adopting the tooling lateral movement device 10 provided in this application embodiment, the gap between the tooling 300 on two adjacent battery cells 100 increases during the battery string laying process. This allows the gap between the tooling 300 on two adjacent battery cells 100 to accommodate the clamping components of the traction device 30, ultimately ensuring the smooth stringing of the compact battery string. In addition, during the battery string laying process, the welding ribbon 200 does not need to leave a long excess length, thereby saving welding ribbon usage and reducing the production cost of the battery string.
[0080] Optional, such as Figure 3 and Figure 5 As shown, the lifting mechanism 4 includes a mounting plate 41, a first lifting block 42, and a second lifting block 43. The mounting plate 41 is connected to the movable part of the lifting mechanism 3. The first lifting block 42 and the second lifting block 43 are respectively disposed at both ends of the mounting plate 41, and the second lifting block 43 has the same structure as the first lifting block 42. Taking the first lifting block 42 as an example, it includes a vertical connecting part 421 and a horizontal lifting part 422. The upper end of the connecting part 421 is connected to the mounting plate 41, and the lifting part 422 is connected to the lower end of the connecting part 421. When the lifting mechanism 3 drives the mounting plate 41 to rise, the lifting part 422 lifts the fixture 300.
[0081] like Figure 3 and Figure 4 As shown, the tooling 300 generally has stepped portions 301 at both ends. The mounting plate 41 is driven to translate along the first direction toward the tooling 300 by the transverse mechanism 22, allowing the lifting portions 422 of the first lifting block 42 and the second lifting block 43 to move below the stepped portions 301 at both ends of the tooling 300. Subsequently, the lifting mechanism 3 drives the mounting plate 41 to rise a predetermined height, thereby lifting the first lifting block 42 and the second lifting block 43 from both ends of the tooling 300. Of course, to ensure that the lifting portions 422 can move below the stepped portions 301 at both ends of the tooling 300, the thickness of the lifting portions 422 must be less than the height of the stepped portions 301.
[0082] like Figure 6 As shown, optionally, the lifting part 422 is provided with a mounting groove 423, and a magnet for adsorbing the tooling is installed in the mounting groove 423. The magnet can be a ferromagnetic material, an electromagnet, or other material that can achieve magnetic adsorption of the tooling. By providing a magnet on the lifting part 422, the tooling is adsorbed and positioned, preventing the tooling from shifting during the lateral movement, which would prevent the effective clamping of the welding strip after the tooling is lowered back down.
[0083] Optionally, during the lateral movement of the tooling along the first direction, the clamping part on the tooling used to clamp the welding strip remains in contact with the welding strip below. This arrangement allows the tooling to continuously clamp the welding strip during lateral movement, thereby preventing the welding strip from shifting and deviating from the solder pads on the battery cell.
[0084] Optionally, the tooling includes a tooling bracket and a clamping part mounted on the tooling bracket. The clamping part is an elastic pressure needle that extends downward from the tooling bracket in a free state. During the process of the transverse mechanism 2 transversely moving the tooling along the first direction, the tooling bracket disengages from the conveying surface (e.g., the conveyor line) of the conveying tooling, while the elastic pressure needle remains in contact with the corresponding welding strip.
[0085] Because the clamping part of the tooling is an elastic pressure pin, during the battery string laying process, after the transport device presses the tooling onto the welding strip and battery cell, the elastic pressure pin compresses the welding strip onto the battery cell. When the lifting mechanism 4 lifts the tooling upward, the elastic pressure pin loses pressure and rebounds, extending downward, thereby maintaining contact with the corresponding welding strip and ensuring that the welding strip is continuously positioned on the solder pad.
[0086] like Figure 5As shown, optionally, the transverse movement mechanism 2 includes a transverse slide rail 21, a connecting plate 22, and a transverse movement drive module 23. The transverse slide rail 21 is mounted on the bottom of the mounting base along a first direction. The connecting plate 22 is slidably connected to the transverse slide rail 21 and connected to the drive end of the transverse movement drive module 23. The transverse movement drive module 23 is used to drive the connecting plate 22 to slide along the transverse slide rail 21. The lifting mechanism 3 includes a vertical slide rail 31 and a lifting drive module 32. The vertical slide rail 31 is mounted on the connecting plate 22 along a vertical direction. The lifting mechanism 4 is slidably connected to the vertical slide rail 31 and connected to the drive end of the lifting drive module 32. The lifting drive module 32 is used to drive the lifting mechanism 4 to slide up and down along the vertical slide rail 31.
[0087] By configuring the lateral movement mechanism 2 and the lifting mechanism 3, it is ensured that the lateral movement mechanism 2 and the lifting mechanism 3 can smoothly drive the lifting mechanism 4 to move laterally and lift, preventing the lifting mechanism 4 from deviating.
[0088] Optionally, the transverse drive module 23 includes a drive motor 231, a drive pulley 232, a driven pulley 233, and a synchronous belt 234. The drive pulley 232 and driven pulley 233 are spaced laterally on the mounting base 1. The synchronous belt 234 is fitted onto the drive pulley 232 and driven pulley 233. The connecting plate 22 is fixedly connected to one side of the synchronous belt 234 (e.g., the lower side). The drive motor 231 drives the drive pulley 232 to rotate, thereby rotating the synchronous belt 234. When the synchronous belt 234 rotates, it drives the connecting plate 22 to slide along the transverse slide rail 21. Alternatively, the transverse drive module 23 can also use other existing linear drive modules, as long as they can drive the connecting plate 22 to slide along the transverse slide rail 21.
[0089] The lifting drive module 32 can be any existing linear drive module capable of driving the lifting mechanism 4 to slide up and down along the vertical slide rail 31, such as a cylinder, a lead screw motor, etc.
[0090] like Figure 5 As shown, optionally, the lifting mechanism 3 also includes a limiting plate 33 disposed on the connecting plate 22 and located above the lifting mechanism 4. The limiting plate 33 is used to limit the upward stroke of the lifting mechanism 4, ensuring that the lifting mechanism 4 stops after lifting the tooling to a predetermined height, preventing the tooling from rising too much and causing the clamping part on the tooling to detach from the welding strip.
[0091] Based on the same technical concept, embodiments of this application also provide a battery cell stringing device, which is used to solidify and string battery cells and solder ribbons. Figure 7 As shown, the battery cell stringing equipment in this embodiment includes a conveyor line 20, a traction device 30, a handling device 40, a curing device 50, and a tooling transverse movement device 10 as described in any of the above embodiments, wherein:
[0092] The conveyor line 20 is used to transport battery cells, welding strips and tooling. The conveyor line 20 is provided with a laying station A, a transverse moving station B and a curing station C in sequence along the conveying path in the first direction.
[0093] The traction device 30 is configured to clamp the end of the welding strip and lay the first half of the welding strip onto the battery cell located at the laying station A, while the second half of the welding strip is laid onto the conveyor line 20.
[0094] The conveying device 40 is configured to press the tooling onto the first position on the front half of the welding strip, and the traction device 30 is configured to release the end of the welding strip.
[0095] The conveying device 40 is also configured to lay the next cell onto the latter half of the welding strip.
[0096] The conveyor line 20 is configured to move forward in a stepping manner, such that while the cell at the laying station A moves forward, the next cell moves to the laying station A.
[0097] The tooling traverse device 10 is located above the traverse station B. The tooling traverse device 10 is configured to move the tooling on the battery cell located at the traverse station B traversely a predetermined distance along the conveying direction of the conveyor line 20 and then press the tooling 300 back onto the second position on the front half of the welding strip.
[0098] The distance between the tooling in the first position and the end of the first half of the welding strip is greater than the distance between the tooling in the second position and the end of the first half of the welding strip.
[0099] The curing device 50 is located above the curing station C and is configured to fix the solder ribbon 200 located at the curing station C to the corresponding solar cell 100.
[0100] The battery cell stringing equipment provided in this application is used to solidify and string the battery cells. During the battery string laying process, when the transport device 40 presses the tooling onto the welding strip and battery cells, the distance between the tooling 300 and the front half of the welding strip is set to be greater than the target distance. When the tooling is transported to the lateral movement station B, the tooling lateral movement device 10 further adjusts the tooling 300 laterally, thereby adjusting the distance between the tooling 300 and the front half of the welding strip 200 to the target distance. This ensures that the tooling can press the front half of the welding strip onto the corresponding solder pad on the upper surface of the battery cell, ultimately guaranteeing the stringing quality of the battery cells.
[0101] During the battery string laying process, the gap between the tooling 300 on two adjacent battery cells 100 increases, thereby making the gap between the tooling 300 on two adjacent battery cells 100 sufficient to accommodate the clamping components of the traction device 30, ultimately ensuring that the battery cell stringing equipment provided in this application can achieve the curing and stringing of compact battery cells.
[0102] The traction device 30 can be any existing device capable of laying welding strips. For example, the traction device 30 includes a moving mechanism and a clamping component disposed on the drive end of the moving mechanism. The moving mechanism is used to drive the clamping component to move so that the clamping component clamps the end of the welding strip to be laid and then lays the welding strip onto the battery cell and conveyor line 20 at the laying station A.
[0103] The conveying device 40 can be any device capable of conveying battery cells and tooling. For example, the conveying device 40 includes a moving mechanism and a suction cup assembly and a magnetic suction assembly arranged side by side on the driving end of the moving mechanism. The moving mechanism is used to drive the suction cup assembly and the magnetic suction assembly to move synchronously, so as to drive the suction cup assembly to pick up the battery cells and transport the battery cells to the conveyor line 20, and to drive the magnetic suction assembly to pick up the tooling and press the tooling onto the corresponding battery cells.
[0104] The curing device 50 can be an infrared light box, an LED light box, a laser welding device, or other devices that can cure the welding ribbon onto the battery cell.
[0105] Based on the same technical concept, this application also provides a method for stringing battery cells, which is used to solidify and string battery cells and solder ribbons. The method for stringing battery cells in this application includes:
[0106] Clamp the end of the i-th group of welding strips and pull the first half of the i-th group of welding strips along the first direction to the (i-1)-th cell, where i is a natural number.
[0107] The (i-1)th tooling is placed on the front half of the i-th group of welding strips and the (i-1)th battery cell. The (i-1)th tooling presses the front half of the i-th group of welding strips onto the upper surface of the (i-1)th battery cell. At this time, the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is the first distance.
[0108] Place the i-th cell onto the latter half of the i-th group of solder strips.
[0109] The i-th group of welding strips, the (i-1)-th tooling, the (i-1)-th solar cell, and the i-th solar cell are conveyed forward along the first direction.
[0110] The tooling is lifted and moved forward along the first direction relative to the (i-1)th battery cell and the i-th group of welding strips, so that the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is adjusted to a second distance, which is less than the first distance.
[0111] During the stringing process of battery cells, the increased gap between the tooling on adjacent cells allows for the accommodating gripping components of the traction device, ultimately ensuring the successful stringing of the compact battery cells. Furthermore, no extra length of welding ribbon is required during stringing, saving on ribbon usage and reducing production costs.
[0112] The battery cell stringing method in this application embodiment can be implemented by the battery string laying equipment described in the previous embodiments of this application. To enable those skilled in the art to more clearly understand the technical solution of the battery cell stringing method in this application embodiment, the following will combine... Figure 7 The implementation process of the battery cell stringing method in the embodiments of this application will be described exemplarily.
[0113] For the sake of simplicity, we assume that the target battery string to be obtained consists of only 3 battery cells connected in series. Of course, in actual production, the number of battery cells in a battery string may be much more than 3.
[0114] First, the traction device 30 clamps the end of the first set of welding strips 200-1 and lays the first set of welding strips 200-1 onto the conveyor line 20, with the latter half of the first set of welding strips 200-1 located at laying station A. Subsequently, the handling device 40 places the first battery cell 100-1 onto the latter half of the first set of welding strips 200-1.
[0115] Next, as Figure 5 As shown in (a), the traction device 30 clamps the end of the second group of welding strips 200-2 and pulls the first half of the second group of welding strips 200-2 along the first direction onto the first battery cell 100-1.
[0116] Next, as Figure 5 As shown in (b), the conveying device 40 places the first tooling 300-1 onto the front half of the second set of welding strips 200-2 and the first battery cell 100-1, such that the first tooling 300-1 presses the front half of the second set of welding strips 200-2 against the upper surface of the first battery cell 100-1. At this time, the distance from the front end face of the first tooling 300-1 along the first direction to the front end face of the first battery cell 100-1 along the first direction is a larger first distance. Simultaneously, the conveying device 40 places the second battery cell 100-2 onto the rear half of the second set of welding strips 200-2. The traction device 30 releases the end of the second set of welding strips 200-2.
[0117] Next, as Figure 5As shown in (c), the conveyor line 20 advances forward, causing the first solar cell 100-1 and its first tooling 300-1 to reach the traversing station B, while the second solar cell 100-2 reaches the laying station A. The tooling traversing device 10 lifts and moves the first tooling 300-1 forward along a first direction relative to the first solar cell 100-1 and the second set of welding strips 200-2, adjusting the distance from the front end face of the first tooling 300-1 along the first direction to the front end face of the first solar cell 100-1 along the first direction to a smaller second distance, thereby ensuring that the placement of the first tooling 300-1 meets the curing requirements. At the same time, the traction device 30 clamps the end of the third set of welding strips 200-3 and pulls the first half of the third set of welding strips 200-3 along the first direction onto the second solar cell 100-2.
[0118] Subsequently, the conveying device 40 places the second tooling 300-2 onto the front half of the third set of welding strips 200-3 and the second battery cell 102, such that the second tooling 300-3 presses the front half of the third set of welding strips 200-3 against the upper surface of the second battery cell 100-2. At this time, the distance from the front end face of the second tooling 300-2 along the first direction to the front end face of the second battery cell 100-2 along the first direction is a larger first distance. Simultaneously, the conveying device 40 places the third battery cell 100-3 onto the rear half of the third set of welding strips 200-3. The traction device 30 releases the end of the third set of welding strips 200-3.
[0119] Next, as Figure 5 As shown in (d), the conveyor line 20 moves forward step by step, so that the second cell 100-2 and the second tooling 300-2 on it reach the transverse station B, and the third cell 100-3 reaches the laying station A.
[0120] The tooling lateral movement device 10 lifts and moves the second tooling 300-2 forward along the first direction relative to the second battery cell 100-2 and the third set of welding strips 200-3. This adjusts the distance between the front end face of the second tooling 300-2 along the first direction and the front end face of the second battery cell along the first direction to a smaller second distance, thereby ensuring that the placement of the second tooling 300-2 meets the curing requirements. Simultaneously, the traction device 30 clamps the end of the fourth set of welding strips 200-4 and pulls the first half of the fourth set of welding strips 200-4 along the first direction onto the third battery cell 100-3.
[0121] As can be seen, when the conveying device 40 places the latter tooling onto the welding strip and the battery cell, the former tooling has already been moved forward by the tooling lateral movement device 10. Thus, compared to the existing tooling placement method, the distance between the latter tooling and the former tooling is increased when the latter tooling is placed, thereby ensuring that the gap between the two toolings is sufficient to accommodate the clamping components of the traction device 30, and that the latter tooling does not come into contact with the clamping components of the traction device 30 when it is placed.
[0122] Optionally, when the (i-1)th fixture is lifted and moved forward along the first direction relative to the (i-1)th battery cell and the (i-1)th group of solder strips, the (i-1)th fixture always presses the (i-1)th group of solder strips onto the (i-1)th battery cell. In this way, the fixture continuously presses the solder strips during the lateral movement, preventing the solder strips from shifting.
[0123] For example, Figure 7 In this embodiment, when the tooling traversing device 10 lifts and moves the first tooling 300-1 forward along the first direction relative to the first battery cell 100-1 and the second set of welding strips 200-2, the first tooling 300-1 always presses the second set of welding strips 200-2 onto the first battery cell 100-1. When the tooling traversing device 10 lifts and moves the second tooling 300-2 forward along the first direction relative to the second battery cell 100-2 and the third set of welding strips 200-3, the second tooling 300-2 always presses the third set of welding strips 200-3 onto the second battery cell 100-2.
[0124] Optionally, in the battery cell stringing method of this application, the end of the i-th group of welding strips is clamped by a traction device, and the first half of the i-th group of welding strips is pulled along the first direction onto the (i-1)-th battery cell. Specifically, when the distance from the front end face of the (i-1)-th tooling along the first direction to the front end face of the (i-1)-th battery cell along the first direction is a first distance, the spacing between the (i-1)-th tooling and the (i-2)-th tooling is greater than the dimension of the clamping component of the traction device along the first direction. When the distance from the front end face of the (i-1)-th tooling along the first direction to the front end face of the (i-1)-th battery cell along the first direction is a second distance, the spacing between the (i-1)-th tooling and the (i-2)-th tooling is less than the dimension of the clamping component of the traction device along the first direction.
[0125] This arrangement ensures that, when placing the current tooling, the gap between it and the previous tooling is sufficient to accommodate the clamping components of the traction device. For example, Figure 7 In the embodiment, when the distance from the front end face of the second tooling along the first direction to the front end face of the second battery cell along the first direction is the first distance, that is, when the second tooling is placed on the first battery cell, the distance between the second tooling and the first tooling is greater than the size of the clamping component of the traction device 30 along the first direction.
[0126] The foregoing has provided a sufficiently detailed and specific description of this application. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, not by the above descriptions in the embodiments. Furthermore, the embodiments mentioned in this application are not limited to a single implementation; some embodiments can also be combined.
Claims
1. A tooling transverse movement device, characterized in that, The tooling traversing device includes a mounting base, a traversing mechanism, a lifting mechanism, and a hoisting mechanism, wherein: The lateral movement mechanism is located at the bottom of the mounting base; The lifting mechanism is connected to the movable part of the traversing mechanism; The lateral movement mechanism and the lifting mechanism are configured to cooperate in driving the lifting mechanism to move laterally and lift, thereby lifting the tooling and moving the tooling laterally a predetermined distance along a first direction before lowering it back down.
2. The tooling transverse movement device as described in claim 1, characterized in that, The lifting mechanism includes a mounting plate, a first lifting block, and a second lifting block, wherein: The mounting plate is connected to the movable part of the lifting mechanism; The first lifting block and the second lifting block are respectively disposed at both ends of the mounting plate, and the second lifting block has the same structure as the first lifting block; The first lifting block includes a vertical connecting part and a horizontal lifting part. The upper end of the connecting part is connected to the mounting plate, and the lifting part is connected to the lower end of the connecting part. When the lifting mechanism drives the mounting plate to rise, the lifting part lifts the tooling. The lifting mechanism is configured to drive the mounting plate to rise to a predetermined height, thereby causing the first lifting block and the second lifting block to lift the tooling from both ends.
3. The tooling transverse movement device as described in claim 2, characterized in that, The lifting part is provided with a mounting groove, and a magnet for adsorbing the tooling is installed in the mounting groove.
4. The tooling transverse movement device as described in claim 1, characterized in that, During the process of the transverse mechanism transversely moving the tooling along the first direction, the clamping part on the tooling used to clamp the welding strip remains in contact with the welding strip below.
5. The tooling transverse movement device as described in claim 4, characterized in that, The tooling includes a tooling bracket and a clamping part mounted on the tooling bracket. The clamping part is an elastic pressure needle, which extends downward from the tooling bracket in a free state. During the process of the transverse mechanism transversely moving the tooling along the first direction, the tooling bracket disengages from the conveying surface of the conveying tooling, and the elastic pressure needle remains in contact with the corresponding welding strip.
6. The tooling transverse movement device as described in claim 1, characterized in that: The lateral movement mechanism includes a lateral slide rail, a connecting plate, and a lateral movement drive module. The lateral slide rail is installed at the bottom of the mounting base along the first direction. The connecting plate is slidably connected to the lateral slide rail and connected to the drive end of the lateral movement drive module. The lateral movement drive module is used to drive the connecting plate to slide along the lateral slide rail. The lifting mechanism includes a vertical slide rail and a lifting drive module. The vertical slide rail is mounted vertically on the connecting plate. The lifting mechanism is slidably connected to the vertical slide rail and connected to the drive end of the lifting drive module. The lifting drive module is used to drive the lifting mechanism to slide up and down along the vertical slide rail.
7. The tooling transverse movement device as described in claim 6, characterized in that, The lateral movement drive module includes a drive motor, a driving pulley, a driven pulley, and a synchronous belt, wherein: The driving pulley and the driven pulley are arranged laterally on the mounting base. The synchronous belt is sleeved on the driving pulley and the driven pulley. The connecting plate is fixedly connected to one side of the synchronous belt. The drive motor drives the driving pulley to rotate so as to drive the synchronous belt to rotate.
8. The tooling transverse movement device as described in claim 6, characterized in that, The lifting mechanism also includes a limiting plate disposed on the connecting plate and located above the lifting mechanism. The limiting plate is used to limit the upward stroke of the lifting mechanism. The lifting drive module is a cylinder.
9. A battery cell stringing device, characterized in that, The battery cell stringing equipment includes a conveyor line, a traction device, a handling device, a curing device, and a tooling transverse movement device as described in any one of claims 1 to 8, wherein: The conveyor line is used to transport battery cells, welding strips and tooling. The conveyor line is provided with a laying station, a transverse moving station and a curing station in sequence along the conveying path in the first direction. The traction device is configured to clamp the end of the welding strip and lay the first half of the welding strip onto the battery cell located at the laying station, while the second half of the welding strip is laid onto the conveyor line. The conveying device is configured to press the tooling onto a first position on the front half of the welding strip, and the traction device is configured to release the end of the welding strip; The conveying device is also configured to lay the next battery cell onto the rear half of the welding strip; The conveyor line is configured to move forward in a stepping manner, such that while the cell at the laying station moves forward, the next cell moves to the laying station. The tooling lateral movement device is located above the lateral movement station. The tooling lateral movement device is configured to move the tooling on the battery cell located at the lateral movement station laterally a predetermined distance along the conveying direction of the conveyor line and then press the tooling back onto the second position on the front half of the welding strip. The distance between the tooling located at the first position and the front half end of the welding strip is greater than the distance between the tooling located at the second position and the front half end of the welding strip. The curing device is located above the curing station and is configured to fix the solder ribbon located at the curing station to the corresponding battery cell.
10. A method for stringing battery cells, characterized in that, The method for stringing battery cells includes: Clamp the end of the i-th group of welding strips and pull the first half of the i-th group of welding strips along the first direction to the (i-1)-th cell, where i is a natural number; The (i-1)th tooling is placed on the front half of the i-th group of welding strips and the (i-1)th battery cell. The (i-1)th tooling presses the front half of the i-th group of welding strips onto the upper surface of the (i-1)th battery cell. At this time, the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is the first distance. Place the i-th cell on the latter half of the i-th group of solder strips; The i-th group of welding strips, the (i-1)-th tooling, the (i-1)-th battery cell, and the i-th battery cell are conveyed forward along the first direction; The (i-1)th tooling is lifted and moved forward along the first direction relative to the (i-1)th battery cell and the i-th group of welding strips, so that the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is adjusted to a second distance, which is less than the first distance.
11. The method for stringing battery cells according to claim 10, characterized in that, When the lifting motion is performed and the i-1th tooling moves forward along the first direction relative to the i-1th battery cell and the i-th group of welding strips, the i-1th tooling always presses the i-th group of welding strips onto the i-1th battery cell.
12. The method for stringing battery cells according to claim 10, characterized in that, The battery cell stringing method uses a traction device to clamp the end of the i-th group of welding strips and pull the first half of the i-th group of welding strips along the first direction to the (i-1)-th battery cell. When the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is a first distance, the spacing between the (i-1)th tooling and the (i-2)th tooling is greater than the dimension of the clamping component of the traction device along the first direction. When the distance from the front end face of the (i-1)th tooling along the first direction to the front end face of the (i-1)th battery cell along the first direction is the second distance, the spacing between the (i-1)th tooling and the (i-2)th tooling is less than the dimension of the clamping component of the traction device along the first direction.