Battery piece adjusting device, adjusting method and battery string production equipment

Abstract

The application discloses a battery piece adjusting device, an adjusting method and a battery string production equipment, wherein the battery piece adjusting device is used for lifting the battery piece by a certain angle to form a film insertion gap, the battery piece adjusting device comprises a mounting bracket, a driving device, a transmission device and at least two battery piece turnover modules which are arranged on the mounting bracket at intervals, the driving device drives the battery piece turnover module to move through the transmission device, so that the battery piece carried on the battery piece turnover module is turned by a predetermined angle. The battery piece adjusting device is provided with at least two battery piece turnover modules, the driving device drives the battery piece turnover module to turn, so that the battery piece carried on the battery piece turnover module is turned by a predetermined angle, the battery piece is not directly stressed during the battery piece turning operation, the risk of the broken battery piece is greatly reduced, and the qualified rate of the battery string is improved.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic module manufacturing technology, and particularly relates to a cell adjustment device, adjustment method, and cell string production equipment. Background Technology

[0002] After being wired together by solder ribbons, the solar cells undergo a series of post-processing steps and are finally laminated to form a solar module. During this process, the locations where adjacent solar cells within the cell string are connected by solder ribbons are prone to microcracks and damage due to the lamination process. To address this issue, a membrane strip is typically inserted between the solder ribbons and the solar cells to provide flexible support.

[0003] The traditional membrane insertion method involves pressing one side of the solar cell and lifting the other side, causing the cell to rotate at a certain angle to separate the solder strip from the unwelded portion of the cell. The membrane strip is then inserted into the gap between the solder strip and the cell, and the cell is returned to its original position. However, in actual production, this method increases the risk of cell breakage due to the pressing and lifting action. Summary of the Invention

[0004] In view of the above-mentioned technical defects in the existing battery cell film-insertion process, the first aspect of the present invention provides a battery cell adjustment device to solve the problem of easy breakage of battery cells when using a rotation method of pressing one side and lifting the other side.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A battery cell adjustment device includes a mounting bracket, a driving device, a transmission device, and at least two battery cell flipping modules spaced apart on the mounting bracket. The driving device drives the battery cell flipping modules to rotate through the transmission device to achieve a predetermined angle rotation of the battery cells carried on the battery cell flipping modules.

[0007] By setting at least two cell flipping modules, the driving device drives the cell flipping modules to flip, thereby causing the cells carried on the cell flipping modules to flip by a predetermined angle. This ensures that the cells are not directly subjected to pressing or lifting forces during the cell flipping operation, thus greatly reducing the risk of cell breakage and improving the pass rate of the cell string.

[0008] In some embodiments, the cell flipping module includes a mounting base and a flipping plate; the mounting base is mounted on a mounting bracket, the flipping plate is rotatably mounted on the mounting base, the transmission device includes a drive shaft and a first sub-drive device, the drive device is connected to the drive shaft, the first sub-drive device is mounted on the drive shaft, the drive shaft drives the flipping plate to rotate through the first sub-drive device, and the flipping plate is used to pick up the cell.

[0009] By rotatably mounting a flip plate on the mounting base, the drive device drives the flip plate to rotate through the transmission shaft and the first sub-transmission device, thereby flipping the battery cells carried by the flip plate to a predetermined angle, providing a battery cell flipping module and transmission device with simple structure and stable and reliable operation.

[0010] In some embodiments, a ball bearing is provided on the flip plate, and a first sub-transmission device is used to abut against the ball bearing to drive the flip plate to rotate.

[0011] The rotation of the flip plate is achieved through the cooperation of the first sub-drive device and the ball bearing. At the same time, when the first sub-drive device abuts against the ball bearing, the flip plate can move in the length and width directions of the mounting bracket to ensure the adaptability of the flip plate in flipping the battery cells.

[0012] In some embodiments, the surface of the first sub-transmission device that abuts against the ball is convex arc-shaped.

[0013] By setting the surface of the first sub-drive device that abuts against the ball to a convex arc shape, the first sub-drive device can make point contact with the ball when it abuts, thus ensuring smooth rotation and movement of the flip plate.

[0014] In some embodiments, the cell flipping module further includes a reset device, with a first end connected to a mounting base and a second end connected to a flipping plate.

[0015] By setting a reset device, after the cell is flipped at a predetermined angle for film insertion, the flipping plate is reset by the reset device so that the film strip is positioned between the cell and the welding strip.

[0016] In some embodiments, the transmission device further includes a second sub-transmission device mounted on the transmission shaft, the mounting base is mounted on the mounting bracket via a sliding device, and the driving device drives the mounting base to move along the length direction of the mounting bracket via the second sub-transmission device.

[0017] The second sub-drive device drives the mounting base to move along the length of the mounting bracket, so that the battery cell flips and moves the two adjacent battery cell flipping modules closer to each other, thereby reducing the distance between the two adjacent battery cells and reducing or offsetting the pulling of the welding strip during the battery cell flipping process. At the same time, the second sub-drive device and the first sub-drive device are both driven by a drive shaft and share a single drive device, which simplifies the overall structure and reduces costs.

[0018] In some embodiments, the second sub-drive includes a threaded groove assembly and a roller. The threaded groove assembly is disposed on the drive shaft, and the roller is mounted on the mounting base. The roller is configured to roll within the threaded groove assembly, and the drive device drives the threaded groove assembly to rotate, thereby moving the mounting base along the length direction of the mounting bracket.

[0019] By combining the threaded groove assembly and the roller, the drive unit can move the mounting base along the length of the mounting bracket via the transmission shaft, providing a simple, stable and reliable second sub-transmission device.

[0020] In some embodiments, the cell flipping module is configured with at least three, and the threaded groove assembly of each cell flipping module is different. The drive shaft rotates at the same angle, and the threaded groove assembly near both ends of the drive shaft drives the flipping plate to move a greater distance along the length of the mounting bracket than the threaded groove assembly in the middle drives the flipping plate to move a greater distance along the length of the mounting bracket.

[0021] By setting at least three cell flipping modules, each with a different threaded groove assembly, when the drive shaft rotates by the same angle, the cell flipping modules on both sides can move closer to the cell flipping module in the middle. Furthermore, the outer cell flipping modules move a greater distance along the length of the mounting bracket than the middle cell flipping module. This adjustment method, moving from both sides towards the middle with the outer cell flipping modules adjusting further than the middle module, can quickly and efficiently reduce or counteract the pulling on the solder strips during cell flipping.

[0022] In some embodiments, the cell adjustment device further includes a flip drive device configured to drive the mounting bracket to flip by at least 180°, thereby causing all cells to flip by 180°.

[0023] By setting up a flipping drive device, all solar cells can be flipped 180° via the mounting bracket to adapt to subsequent process requirements, thus providing a solar cell adjustment device that also has a flipping function.

[0024] In some embodiments, the mounting bracket is further provided with a clamping member configured to clamp the membrane strip onto the battery string.

[0025] By setting up a clamping component, the membrane strip inserted into the membrane gap can be pressed firmly onto the battery string to prevent the membrane strip from shifting, and at the same time, it can provide support for the subsequent heating and curing of the membrane strip.

[0026] In some embodiments, the clamping component includes a clamping drive and a plurality of clamping members. The fixed end of the clamping drive is mounted on a mounting bracket, and the driving end of the clamping drive is connected to the plurality of clamping members. The clamping drive drives the plurality of clamping members to abut against the membrane strip.

[0027] By using a clamping drive to drive multiple clamping components to press the membrane strip onto the battery string, a simple and easy-to-implement clamping component is provided.

[0028] In some embodiments, the contact ends of the plurality of clamping members and the membrane strip are provided with anti-sticking components or coated with an anti-sticking layer.

[0029] By setting anti-stick components or anti-stick layers on the clamping parts, the membrane strip is prevented from sticking to the clamping parts after being heated and softened, thus ensuring the quality of the membrane strip's heat curing.

[0030] A method for adjusting battery cells includes the following steps:

[0031] S1, Pick up a battery string containing at least four battery cells;

[0032] S2, each battery cell is flipped at a certain angle to form an intercalation gap. While each battery cell is flipped, each battery cell is moved toward the center of the battery string. The moving distance of the battery cell is positively correlated with the distance from the battery cell to the center of the battery string.

[0033] The above-mentioned cell adjustment method can achieve the flipping of each cell at a certain angle to form a membrane insertion gap. At the same time, while each cell is flipping, it moves towards the center of the cell string. The moving distance of the cell is positively correlated with the distance from the cell to the center of the cell string, which can quickly and efficiently reduce or offset the pulling of the solder ribbon during the cell flipping process.

[0034] A method for adjusting solar cells, using the aforementioned solar cell adjustment device, includes the following steps:

[0035] S1, firstly, at least three battery cells are supported and positioned by at least three battery cell flipping modules;

[0036] S2, the cell flipping module drives the corresponding cell to flip, and after the cell is lifted at a certain angle, a gap is formed for inserting the film. At the same time as the cell flipping, the drive device drives the cell flipping modules near both ends of the drive shaft to move closer to the cell flipping module in the middle through the drive shaft and the second sub-drive device, so that the distance between two adjacent cells becomes smaller, thereby reducing or offsetting the pulling of the welding strip during the cell flipping process.

[0037] The battery cells are supported and positioned by the cell flipping module. Then, the cell flipping module drives the cell to flip, so that the cell is lifted at a certain angle to form a membrane insertion gap. At the same time as the cell flips, the drive device reduces the distance between two adjacent cells through the transmission shaft and the second sub-transmission device, so as to reduce or offset the pulling of the welding strip during the cell flipping process.

[0038] A battery string production device includes a battery string production apparatus, a film strip feeding apparatus, a film strip cutting apparatus, a film insertion apparatus, the aforementioned battery cell adjustment apparatus, and a film strip heating apparatus, wherein...

[0039] The battery string production unit is used to produce battery strings and transport them to the intercalation station.

[0040] The film tape feeding device is configured to fix the film tape roll and drive the film tape roll to rotate to release the material.

[0041] The membrane strip cutting device is configured to cut the membrane strip released from the membrane strip feeding device to obtain n membrane strips.

[0042] The cell adjustment device is configured to lift the heads of n cells in a cell string at the intercalation station at a certain angle, so that the heads of the n cells and the solder strips welded to the heads open to form an intercalation gap. The cell adjustment device is also configured to, while lifting the heads of the n cells at a certain angle, move adjacent cells closer together to reduce or counteract the pulling on the solder strips during the cell lifting process.

[0043] The film insertion device is configured to pull the film belt released by the film belt feeding device to the film belt cutting station, separate the n film strips cut at the film belt cutting station into predetermined intervals, stretch them, and move them to the film insertion station to insert the n film strips into the corresponding film insertion gaps.

[0044] The membrane strip heating device is configured to heat the membrane strip inserted into the membrane gap in order to fix the membrane strip between the battery cell and the welding strip.

[0045] By coordinating a film strip feeding device, a film strip cutting device, a film insertion device, a cell adjustment device, and a film strip heating device, the system automatically cuts the film strip into n film strips, automatically inserts these n strips into their corresponding insertion gaps, and finally heats the inserted strips. This allows for automatic film insertion into the battery strings after welding, resulting in a high degree of automation and significantly improving battery string production efficiency. Simultaneously, when the cell adjustment device lifts the cells, it brings adjacent cells closer together, reducing or offsetting the pulling on the welding strip during lifting and ensuring the processing quality of the battery strings. Attached Figure Description

[0046] Figure 1 This is a first-view perspective three-dimensional structural diagram of the battery cell adjustment device provided in an embodiment of the present invention;

[0047] Figure 2 This is a three-dimensional structural diagram of the battery cell flipping module of the battery cell adjustment device provided in an embodiment of the present invention;

[0048] Figure 3 This is a two-dimensional structural diagram of the battery cell adjustment device provided in an embodiment of the present invention from a second perspective;

[0049] Figure 4 yesFigure 3 Enlarged view of a portion of point A in the middle;

[0050] Figure 5 This is a three-dimensional structural diagram of the transmission device of the battery cell adjustment device provided in an embodiment of the present invention;

[0051] Figure 6 This is a front view schematic diagram of the transmission device of the battery cell adjustment device provided in an embodiment of the present invention.

[0052] Figures 1 to 6 The following reference numerals are included:

[0053] Mounting bracket 1, drive device 2, transmission device 3, transmission shaft 30, first sub-transmission device 31, second sub-transmission device 32, threaded groove assembly 320, roller 321, battery cell flipping module 4, mounting base 40, flipping plate 41, ball bearing 42, reset device 43, suction cup 44, slider 45, battery cell 5, clamping component 6, clamping drive component 60, clamping component 61. Detailed Implementation

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] The connection points between adjacent cells in a battery string, where they are joined by solder strips, are prone to microcracks and breakage due to the lamination process. To address this issue, a membrane strip is typically inserted between the solder strip and the cell to provide flexible support. The traditional method involves pressing one side of the cell and lifting the other, causing the cell to rotate at a certain angle to separate the unwelded portion of the solder strip. The membrane strip is then inserted into the gap between the solder strip and the cell, and the cell is returned to its original position. However, in actual production, this method increases the risk of cell breakage due to the pressing and lifting action.

[0056] Therefore, the present invention provides a battery cell adjustment device for lifting the battery cell at a certain angle to form an intercalation gap. Please refer to [link to relevant documentation]. Figure 1 As shown, Figure 1 This is a first-view perspective three-dimensional structural diagram of the battery cell adjustment device provided in an embodiment of the present invention. The battery cell adjustment device provided in an embodiment of the present invention includes a mounting bracket 1, a driving device 2, a transmission device 3, and at least two battery cell flipping modules 4 spaced apart on the mounting bracket 1. The driving device 2 drives the battery cell flipping modules 4 to move through the transmission device 3, so as to achieve the flipping of the battery cells 5 carried on the battery cell flipping modules 4 by a predetermined angle.

[0057] As can be seen, the cell flipping module 4 carries the cell 5, and the driving device 2 drives the cell flipping module 4 to rotate the cell 5 carried on the cell flipping module 4 by a predetermined angle through the transmission device to form a membrane insertion gap. This enables the cell 5 to be not directly subjected to force during the cell flipping operation, thereby greatly reducing the risk of cell breakage and improving the pass rate of the cell string.

[0058] Please see Figure 2 , Figure 5 and Figure 6 As shown, optionally, the battery cell flipping module 4 includes a mounting base 40 and a flipping plate 41; the mounting base 40 is mounted on the mounting bracket 1, and the flipping plate 41 is rotatably mounted on the mounting base 40. The transmission device 3 includes a transmission shaft 30 and a first sub-transmission device 31. The driving end of the driving device 2 is connected to the transmission shaft 30, and the first sub-transmission device 31 is mounted on the transmission shaft 30. The transmission shaft 30 drives the flipping plate 41 to rotate through the first sub-transmission device 31, and the flipping plate 41 carries the battery cell 5. In one implementation, the side of the flipping plate 41 opposite to the mounting of the ball bearing 42 is provided with a negative pressure adsorption hole or a suction cup. The flipping plate 41 can adsorb and position the battery cell on the flipping plate 41 through the negative pressure adsorption hole or the suction cup.

[0059] As can be seen, by rotatably mounting the flip plate 41 on the mounting base 40, driving the drive shaft 30 to rotate, and then driving the flip plate 41 to rotate through the first sub-drive device 31, the battery cell 5 carried by the flip plate 41 is flipped to a predetermined angle, thus providing a battery cell flipping module 4 and a drive device 3 that are simple in structure and stable and reliable in operation.

[0060] Optionally, the tilting plate 41 is provided with ball bearings 42, and the first sub-transmission device 31 is used to abut against the ball bearings 42 to drive the tilting plate 41 to rotate. The ball bearings 42 can be mounted on the tilting plate 41 by means of a mounting base, or a receiving groove can be provided on the tilting plate 41, into which the ball bearings 42 are embedded, and the ball bearings 42 can rotate in any direction.

[0061] As can be seen, when the drive shaft 30 rotates, it drives the first sub-drive device 31 to rotate synchronously. When the first sub-drive device 31 abuts against the ball bearing 42, it drives the flipping plate 41 to rotate at a certain angle, so as to lift the battery cell 5 carried by the flipping plate 41 at a certain angle to form an insertion gap. At the same time, the setting of the ball bearing 42 enables the flipping plate 41 to move in the length and width directions of the mounting bracket 1 when the first sub-drive device 31 abuts against the ball bearing 42, ensuring the adaptability of the flipping plate 41 in flipping the battery cell 5.

[0062] Optionally, the surface of the first sub-transmission device 31 that abuts against the ball 42 is convex arc-shaped.

[0063] It can be seen that by setting the contact surface between the first sub-transmission device 31 and the ball 42 to a convex arc shape, the first sub-transmission device 31 makes point contact with the ball 42, thereby ensuring that the flip plate 41 flips and moves smoothly; at the same time, the convex arc design also facilitates transmission and can effectively avoid jamming during transmission.

[0064] Optionally, the cell flipping module 4 also includes a reset device 43, with a first end connected to the mounting base 40 and a second end connected to the flipping plate 41. Preferably, the reset device 43 is a helical spring.

[0065] As can be seen, after the battery cell 5 is rotated at a predetermined angle to insert the membrane, the rotating plate 41 can be reset by the resetting device 43 so that the membrane strip is positioned between the battery cell 5 and the welding strip.

[0066] Optionally, the flip plate 41 is provided with multiple suction holes or multiple suction cups 44 are installed to support and fix the battery cell 5 by suction, so as to realize the function of the flip plate 41 carrying the battery cell 5.

[0067] Optionally, the transmission device 3 further includes a second sub-transmission device 32 mounted on the transmission shaft 30. The mounting base 40 is mounted on the mounting bracket 1 via a sliding device, and the drive device 2 drives the mounting base 40 to move along the length direction of the mounting bracket 1 via the second sub-transmission device 32. Preferably, the sliding device includes a slider 45 and a linear guide rail. The slider 45 is fixedly mounted on the mounting base 40, and the linear guide rail is fixedly mounted on the mounting bracket 1 and extends along the length direction of the mounting bracket 1.

[0068] As can be seen, the drive device 2 drives the transmission shaft 30 to rotate, and the transmission shaft 30 drives the mounting base 40 to move along the length direction of the mounting bracket 1 through the second sub-transmission device 32, so that the battery cell 5 flips and simultaneously drives the two adjacent battery cell flipping modules 4 to move closer to each other, so that the distance between the two adjacent battery cells 5 is reduced, thereby reducing or offsetting the pulling of the welding strip during the battery cell flipping process; at the same time, the second sub-transmission device 32 and the first sub-transmission device 31 are both driven by the same transmission shaft 30, sharing a single drive device 2, which simplifies the overall structure and reduces costs.

[0069] Optionally, the second sub-drive device 32 includes a threaded groove assembly 320 and a roller 321. The threaded groove assembly 320 is fixedly mounted on the drive shaft 30, and the roller 321 is fixedly mounted on the mounting base 40. The roller 321 is configured to roll within the threaded groove assembly 320. The drive device 2 drives the threaded groove assembly 320 to rotate, thereby causing the mounting base 40 to move along the length direction of the mounting bracket 1.

[0070] As can be seen, the drive device 2 drives the threaded groove assembly 320 to rotate through the transmission shaft 30. When the threaded groove assembly 320 rotates, it drives the mounting base 40 to move along the length direction of the mounting bracket 1 through the roller 321, thereby enabling two adjacent battery cell flipping modules 4 to move closer to each other. This provides a second sub-drive device with a simple structure and stable and reliable operation.

[0071] Optionally, the cell flipping module 4 is configured to have at least three, and the threaded groove assembly 320 of each cell flipping module 4 is different. The drive shaft 30 rotates at the same angle. The threaded groove assembly 320 near both ends of the drive shaft 30 drives the flipping plate 41 to move a greater distance along the length of the mounting bracket 1 than the threaded groove assembly 320 in the middle drives the flipping plate 41 to move a greater distance along the length of the mounting bracket 1.

[0072] As can be seen, by setting at least three cell flipping modules 4, each with a different threaded groove assembly 320, when the drive shaft 30 rotates by the same angle, the cell flipping modules 4 located on both sides can move closer to the cell flipping module 4 located in the middle. Furthermore, the distance the outer cell flipping module 4 moves along the length of the mounting bracket 1 is greater than the distance the middle cell flipping module 4 moves along the length of the mounting bracket 1. By adopting an adjustment method that moves from both sides towards the middle, and by ensuring that the adjustment distance of the outer cell flipping module 2 along the length of the mounting bracket 1 is greater than that of the middle cell flipping module 2, the pulling on the solder strip during cell flipping can be quickly and efficiently reduced or offset.

[0073] Optionally, the cell adjustment device also includes a flip drive, which is configured to drive at least the mounting bracket 1 to flip 180°, thereby causing all the cells 5 to flip 180°.

[0074] As can be seen, the flipping drive device can rotate all the battery cells 5 by 180° via the mounting bracket 1 to adapt to the requirements of subsequent processes, providing a battery cell adjustment device with a flipping function. In this embodiment, the flipping drive device rotates all the battery cells 5 by 180° for subsequent heating of the back side of the battery cells 5, so as to heat-melt and solidify the film strip onto the battery string. By heating the back side of the battery cells 5 through the heating device, the heat is conducted to the film strip through the battery cells to heat-melt and solidify the film strip, which not only ensures the heating and solidification effect of the film strip, but also avoids the solder strip detachment caused by the heating device directly heating the solder strip.

[0075] Please see Figure 3 and Figure 4 As shown, optionally, the mounting bracket 1 is also provided with a clamping component 6, which is configured to clamp the membrane strip onto the battery string.

[0076] As can be seen, the pressing component 6 can press the membrane strip inserted into the membrane gap onto the battery string to prevent the membrane strip from shifting during the 180° rotation of the battery cell 5. At the same time, it can provide support for the subsequent heating and curing of the membrane strip, ensuring that the membrane strip is tightly attached to the battery cell 5.

[0077] Optionally, the clamping component 6 includes a clamping drive 60 and multiple clamping elements 61. The fixed end of the clamping drive 60 is mounted on the mounting bracket 1, and the driving end of the clamping drive 60 is connected to the multiple clamping elements 61. The clamping drive 60 drives the multiple clamping elements 61 to abut against the membrane strip to support and fix the membrane strip. Preferably, the spacing between two adjacent clamping elements 61 in the length direction of the mounting bracket 1 is adjustable.

[0078] As can be seen, the pressing drive 60 drives multiple pressing elements 61 to abut against the membrane strip to press the membrane strip onto the battery string. At the same time, the spacing between two adjacent pressing elements 61 is adjustable to accommodate battery cells of different specifications, providing a pressing component 6 that is simple in structure, easy to implement, and has good compatibility.

[0079] Optionally, the contact ends of the multiple clamping members 61 with the membrane strip are provided with anti-sticking components or coated with an anti-sticking layer.

[0080] It is evident that the anti-stick component or the coating with an anti-stick layer can prevent the membrane strip from sticking to the clamping component 61 after heating and softening, thereby ensuring the quality of the membrane strip's heating and curing.

[0081] The battery cell adjustment device provided in this embodiment of the invention has the following advantages:

[0082] 1) It can lift the solar cells at a certain angle to form a membrane gap. When the solar cells are lifted, they are not directly subjected to force, which greatly reduces the risk of cell breakage and improves the pass rate of the solar cell string.

[0083] 2) When the cells are flipped up, the distance between two adjacent cells can be reduced to reduce or offset the pulling of the solder strips during the flipping process, thus preventing the solder strips on the cells from detaching.

[0084] 3) The lifting and adjustment of the battery cells are carried out using a single drive unit, resulting in a simple and compact overall structure and reduced costs.

[0085] 4) The adjustment method is adopted from both sides towards the middle, and the adjustment distance of the outer battery cell flipping module is greater than that of the middle battery cell flipping module. This can quickly reduce or offset the pulling of the solder strip during the battery cell flipping process, so as to ensure a better adjustment effect.

[0086] 5) It integrates a flipping drive device and a pressing component. The flipping drive device drives all the cells to flip 180° to adapt to the subsequent heating and curing of the cell film strips. The pressing component can prevent the film strips from shifting during the 180° flipping process and can also provide support for the subsequent heating and curing of the film strips.

[0087] The present invention also provides a method for adjusting battery cells, which includes the following steps:

[0088] S1, Pick up a battery string containing at least four battery cells;

[0089] S2, each battery cell is flipped at a certain angle to form an intercalation gap. While each battery cell is flipped, each battery cell is moved toward the center of the battery string. The moving distance of the battery cell is positively correlated with the distance from the battery cell to the center of the battery string.

[0090] As can be seen, the above-mentioned cell adjustment method can achieve the flipping of each cell at a certain angle to form an intercalation gap; at the same time, while each cell is flipped, each cell moves towards the center of the cell string. The moving distance of the cell is positively correlated with the distance from the cell to the center of the cell string, which can quickly reduce or offset the pulling of the solder ribbon during the cell flipping process and ensure better adjustment effect.

[0091] The present invention also provides a method for adjusting battery cells. The method in this embodiment uses the aforementioned battery cell adjustment device for adjustment and includes the following steps:

[0092] S1, firstly, at least three battery cells 5 are supported and positioned by at least three battery cell flipping modules 4;

[0093] S2, the cell flipping module 4 drives the corresponding cell 5 to flip, and after the cell 5 is lifted at a certain angle, a film insertion gap is formed. At the same time as the cell 5 flips, the drive device 2 drives the cell flipping modules 4 near both ends of the drive shaft 30 to move closer to the cell flipping module 4 in the middle through the drive shaft 30 and the second sub-drive device 32, so that the distance between two adjacent cells 5 becomes smaller, so as to reduce or offset the pulling of the welding strip during the cell flipping process.

[0094] In step S2 above, the specific action process of the battery cell flipping module 4 driving the corresponding battery cell 5 to flip is as follows: the driving device 2 drives the transmission shaft 30 to rotate. When the transmission shaft 30 rotates, it drives the first sub-transmission device 31 to rotate. When the first sub-transmission device 31 abuts against the ball 42, it drives the flipping plate 41 to rotate at a certain angle. The rotation of the flipping plate 41 causes the head of the battery cell 5 on it to be lifted at a certain angle, so that the head of the battery cell 5 and the welding strip welded to the head open to form an insertion gap.

[0095] In step S2 above, the drive device 2 drives the transmission shaft 30 to rotate, and the transmission shaft 30 drives the first sub-transmission device 31 and the thread groove assembly 320 to rotate synchronously. Through the cooperation of the thread groove assembly 320 and the roller 321, the battery cell flipping module 4 near both ends of the transmission shaft 30 is driven to move closer to the battery cell flipping module 4 in the middle, so that the distance between two adjacent battery cells 5 becomes smaller.

[0096] As can be seen, the above-mentioned cell adjustment method supports and positions the cell 5 by means of the cell flipping module 4, and then drives the cell to flip by means of the cell flipping module 4, so as to lift the cell to a certain angle to form a film insertion gap. At the same time as the cell flips, the drive device 2 reduces the distance between two adjacent cells by means of the drive shaft 30 and the second sub-drive device 32, so as to reduce or offset the pulling of the welding strip during the cell flipping process.

[0097] This invention also provides a battery string production device. The battery string production device in this embodiment includes a battery string production apparatus, a film strip feeding device, a film strip cutting device, a film insertion device, the aforementioned battery cell adjustment device, and a film strip heating device.

[0098] The battery string production unit is used to produce battery strings and transport them to the intercalation station.

[0099] The film tape feeding device is configured to fix the film tape roll and drive the film tape roll to rotate to release the material.

[0100] The membrane strip cutting device is configured to cut the membrane strip released from the membrane strip feeding device to obtain n membrane strips.

[0101] The cell adjustment device is configured to lift the heads of n cells in a cell string at the intercalation station at a certain angle, so that the heads of the n cells and the solder strips welded to the heads open to form an intercalation gap. The cell adjustment device is also configured to, while lifting the heads of the n cells at a certain angle, move adjacent cells closer together to reduce or counteract the pulling on the solder strips during the cell lifting process.

[0102] The film insertion device is configured to pull the film belt released by the film belt feeding device to the film belt cutting station, separate the n film strips cut at the film belt cutting station into predetermined intervals, stretch them, and move them to the film insertion station to insert the n film strips into the corresponding film insertion gaps.

[0103] The membrane strip heating device is configured to heat the membrane strip inserted into the membrane gap in order to fix the membrane strip between the battery cell and the welding strip.

[0104] The aforementioned membrane insertion equipment enables automatic membrane insertion into the battery strings after welding, achieving a high degree of automation and significantly improving battery string production efficiency. Simultaneously, the cell adjustment device, when lifting the cells, can bring adjacent cells closer together, reducing or offsetting the pulling effect on the welding strips during the lifting process, thus ensuring the processing quality of the battery strings.

[0105] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above examples. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery cell adjustment device, characterized in that, The battery cell adjustment device includes a mounting bracket, a driving device, a transmission device, and at least two battery cell flipping modules spaced apart on the mounting bracket. The driving device drives the battery cell flipping module to move through the transmission device, so as to flip the battery cells carried on the battery cell flipping module by a predetermined angle. The battery cell flipping module includes a mounting base and a flipping plate. The mounting base is mounted on the mounting bracket, and the flipping plate is rotatably mounted on the mounting base. The transmission device includes a transmission shaft and a first sub-transmission device. The driving device is connected to the transmission shaft, and the first sub-transmission device is mounted on the transmission shaft. The transmission shaft drives the flipping plate to rotate through the first sub-transmission device. The flipping plate is used to pick up battery cells. The battery cell flipping module also includes a reset device, the first end of which is connected to the mounting base and the second end of which is connected to the flipping plate; The transmission device further includes a second sub-transmission device mounted on the transmission shaft. The mounting base is mounted on the mounting bracket via a sliding device. The driving device drives the mounting base to move along the length direction of the mounting bracket via the second sub-transmission device. The second sub-transmission device includes a threaded groove assembly and a roller. The threaded groove assembly is disposed on the transmission shaft, and the roller is mounted on the mounting base. The roller is configured to roll within the threaded groove assembly. The driving device drives the threaded groove assembly to rotate, thereby driving the mounting base to move along the length direction of the mounting bracket.

2. The battery cell adjustment device according to claim 1, characterized in that, The flip plate is equipped with ball bearings, and the first sub-transmission device is used to abut against the ball bearings to drive the flip plate to rotate.

3. The battery cell adjustment device according to claim 2, characterized in that, The surface of the first sub-transmission device that abuts against the ball is convex arc-shaped.

4. The battery cell adjustment device according to claim 1, characterized in that, The battery cell flipping module is configured with at least three modules, and the threaded groove assembly of each module is different. When the drive shaft rotates by the same angle, the distance by which the threaded groove assembly near both ends of the drive shaft moves the flip plate along the length of the mounting bracket is greater than the distance by which the threaded groove assembly in the middle moves the flip plate along the length of the mounting bracket.

5. The battery cell adjustment device according to claim 1, characterized in that, The cell adjustment device further includes a flipping drive device configured to drive the mounting bracket to flip by at least 180°, thereby causing all the cells to flip by 180°.

6. The battery cell adjustment device according to claim 1, characterized in that, The mounting bracket is also provided with a clamping component, which is configured to clamp the membrane strip onto the battery string.

7. The battery cell adjustment device according to claim 6, characterized in that, The clamping component includes a clamping drive and multiple clamping elements. The fixed end of the clamping drive is mounted on the mounting bracket, and the driving end of the clamping drive is connected to the multiple clamping elements. The clamping drive drives the multiple clamping elements to abut against the membrane strip.

8. The battery cell adjustment device according to claim 7, characterized in that, The contact ends of the plurality of clamping members and the membrane strip are provided with anti-sticking components or coated with an anti-sticking layer.

9. A method for adjusting battery cells, characterized in that, The battery cell adjustment method includes the following steps: S1, Pick up a battery string containing at least four battery cells; S2, each battery cell is flipped at a certain angle to form an intercalation gap. While each battery cell is flipped, each battery cell is moved toward the center of the battery string. The moving distance of the battery cell is positively correlated with the distance from the battery cell to the center of the battery string.

10. A method for adjusting battery cells, characterized in that, The battery cell adjustment method is performed using the battery cell adjustment device as described in claim 4. Includes the following steps: S1, firstly, at least three battery cells are supported and positioned by at least three battery cell flipping modules; S2, the cell flipping module drives the corresponding cell to flip, and after the cell is lifted at a certain angle, a gap is formed for inserting the film. At the same time as the cell flipping, the drive device drives the cell flipping modules near both ends of the drive shaft to move closer to the cell flipping module in the middle through the drive shaft and the second sub-drive device, so that the distance between two adjacent cells becomes smaller, thereby reducing or offsetting the pulling of the welding strip during the cell flipping process.

11. A battery string production device, characterized in that, The battery string production equipment includes a battery string production device, a film strip feeding device, a film strip cutting device, a film insertion device, a battery cell adjustment device as described in any one of claims 1-8, and a film strip heating device, wherein... The battery string production device is used to produce battery strings and transport them to the film insertion station. The film tape feeding device is configured to fix the film tape roll and drive the film tape roll to rotate to release the material. The film strip cutting device is configured to cut the film strip released by the film strip feeding device to obtain n film strips. The cell adjustment device is configured to lift the heads of n cells in a battery string at the intercalation station at a certain angle, so that the heads of the n cells and the solder strips welded to the heads open to form an intercalation gap. The cell adjustment device is also configured to, while lifting the heads of the n cells at a certain angle, move adjacent cells closer together to reduce or counteract the pulling on the solder strips during the cell lifting process. The film insertion device is configured to pull the film strip released by the film strip feeding device to the film strip cutting station, separate and stretch the n film strips cut at the film strip cutting station at predetermined intervals, and move them to the film insertion station to insert the n film strips into the corresponding film insertion gaps. The membrane strip heating device is configured to heat the membrane strip inserted into the membrane insertion gap to fix the membrane strip between the battery cell and the solder strip.

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