A method and apparatus for repairing a stack battery string

Abstract

The application provides a laminated battery string repair method and a repair device. The laminated battery string repair method first melts a first welding strip group and a second welding strip group welded on a defective battery piece by heating the defective battery piece, so that the first welding strip group and the second welding strip group are separated from the defective battery piece. Then, a first side film strip and a second side film strip on the defective battery piece are pressed on the defective battery piece, and a first side adjacent battery piece and a second side adjacent battery piece are controlled to move away from the defective battery piece, so that the first side film strip and the second side film strip are separated from the first side adjacent battery piece and the second side adjacent battery piece respectively. Then, the first welding strip group and the second welding strip group are cut off, the defective battery piece is removed, and a replacement battery piece with a first replacement film strip, a second replacement film strip, a first replacement welding strip group and a second replacement welding strip group is welded to a position left by the removed defective battery piece, so that the repair of the laminated battery string is completed. The laminated battery string repair method provided by the application realizes the automatic repair of the laminated battery string.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic cell production equipment, in particular to a laminated cell string repair method and a repair device. BACKGROUND

[0002] Figures 1 to 3 A laminated cell string is shown in FIG. 1, and a schematic view of the laminated cell string is shown in FIG. 2. Figures 1 to 3 As shown in FIG. 2, in the laminated cell string, the front half of the solder strip group 300 is stacked and welded on the first surface (e.g., the upper surface) of the cell piece 100 on the first side (e.g., the left side), and the rear half of the solder strip group 300 is welded on the second surface (e.g., the lower surface) of the cell piece 100 on the adjacent second side (e.g., the right side). The edges of the adjacent two cell pieces 100 overlap, and the film strip 200 is arranged at the overlapping part of the adjacent two cell pieces 100, wherein the second surface (e.g., the lower surface) of the film strip 200 is bonded to the first surface (e.g., the upper surface) of the cell piece 100 on the first side (e.g., the left side), and the first surface (e.g., the upper surface) of the film strip 200 is bonded to the second surface (e.g., the lower surface) of the solder strip group and the cell piece 100 on the adjacent second side (e.g., the right side).

[0003] The film strip 200 can buffer the stress at the overlapping part of the adjacent cell pieces during the lamination of the photovoltaic module, thereby avoiding damage to the overlapping part of the adjacent cell pieces.

[0004] For the laminated cell string described above, when there is a defective cell piece (referred to as a defective cell piece) in the cell string, the defective cell piece in the cell string can be replaced and repaired according to actual conditions, that is, the defective cell piece is removed from the cell string, and a qualified cell piece (referred to as a replacement cell piece) is replaced.

[0005] The currently commonly used cell string repair equipment and repair method are mainly used for replacement repair of conventional cell strings without film strips and with no overlapping of adjacent cell pieces, and are difficult to implement repair of laminated cell strings with film strips. SUMMARY

[0006] To solve the above technical problems, the present application provides a laminated cell string repair method, and the detailed technical solutions are as follows:

[0007] A laminated cell string repair method for replacing a defective cell piece in a laminated cell string, wherein the laminated cell string is formed by welding a plurality of cell pieces by a plurality of solder strip groups, and the laminated cell string repair method comprises the following steps:

[0008] A laminated cell string containing a defective cell piece to be repaired is provided, and the first surface of the laminated cell string faces upwards;

[0009] heating the defective cell sheet so that the first solder strip group welded on the second surface of the defective cell sheet and the second solder strip group welded on the first surface of the defective cell sheet are de-soldered from the defective cell sheet, wherein the first solder strip group is also welded on the first surface of the first side adjacent cell sheet, and the second solder strip group is also welded on the second surface of the second side adjacent cell sheet;

[0010] pressing the first side film strip against the defective cell sheet, and pressing the second side film strip against the defective cell sheet, wherein the first side film strip is a film strip located between the defective cell sheet and the first side adjacent cell sheet, and the second side film strip is a film strip located between the defective cell sheet and the second side adjacent cell sheet;

[0011] controlling the first side adjacent cell sheet and the second side adjacent cell sheet to move away from the defective cell sheet, so that the first side film strip is separated from the first side adjacent cell sheet, the second side film strip is separated from the second side adjacent cell sheet, and the first solder strip group and the second solder strip group are partially separated from the defective cell sheet;

[0012] cutting the first solder strip group between the defective cell sheet and the first side adjacent cell sheet, and cutting the second solder strip group between the defective cell sheet and the second side adjacent cell sheet, and removing the defective cell sheet with the first side film strip, the second side film strip, the first solder strip group and the second solder strip group;

[0013] placing a replacement cell sheet with the first surface facing up to the position left by the defective cell sheet after being removed, wherein the first side edge of the replacement cell sheet is attached with a first replacement film strip, the second side edge of the replacement cell sheet is attached with a second replacement film strip, the second surface of the replacement cell sheet is welded with a first replacement solder strip group, and the first surface of the replacement cell sheet is welded with a second replacement solder strip group;

[0014] controlling the first side adjacent cell sheet to move towards the replacement cell sheet to reset, so that the first side edge of the replacement cell sheet is overlapped with the first side adjacent cell sheet, and the first replacement film strip enters between the replacement cell sheet and the first side adjacent cell sheet; and controlling the second side adjacent cell sheet to move towards the replacement cell sheet to reset, so that the second side edge of the replacement cell sheet is overlapped with the second side adjacent cell sheet, and the second replacement film strip enters between the replacement cell sheet and the second side adjacent cell sheet;

[0015] soldering the solder strips in the first solder strip group and the first replacement solder strip group one by one, and soldering the solder strips in the second solder strip group and the second replacement solder strip group one by one.

[0016] The laminated battery string repair method provided by the application first causes the first and second welding strip groups welded on the defective battery cell to be separated from the defective battery cell by heating the defective battery cell. Before, during or after the heating, the first and second side film strips on the two side edges of the defective battery cell are pressed on the defective battery cell. After the heating and separation, the first and second side adjacent battery cells on the two sides of the defective battery cell are controlled to move away from the defective battery cell, so that the first and second side film strips are separated from the first and second side adjacent battery cells, respectively. Then, the first and second welding strip groups are cut, and the defective battery cell is removed from the laminated battery string. Finally, the replacement battery cell with the first and second replacement film strips and the first and second replacement welding strip groups is welded to the position left by the defective battery cell, and the repair of the laminated battery string is completed. The laminated battery string repair method provided by the application realizes the automatic repair of the laminated battery string.

[0017] In some embodiments, before cutting the first welding strip group between the defective battery cell and the first side adjacent battery cell, the laminated battery string repair method further comprises: controlling the first side adjacent battery cell to descend relative to the defective battery cell, so that a height difference is generated between the first side adjacent battery cell and the defective battery cell; before, after or at the same time as controlling the first side adjacent battery cell to move towards the replacement battery cell to reset, the laminated battery string repair method further comprises: controlling the first side adjacent battery cell to ascend to return. Before cutting the second welding strip group between the defective battery cell and the second side adjacent battery cell, the laminated battery string repair method further comprises: controlling the second side adjacent battery cell to ascend relative to the defective battery cell, so that a height difference is generated between the second side adjacent battery cell and the defective battery cell; before, after or at the same time as controlling the second side adjacent battery cell to move towards the replacement battery cell to reset, the laminated battery string repair method further comprises: controlling the second side adjacent battery cell to descend to return.

[0018] After the height difference is generated between the first side adjacent battery cell and the defective battery cell, the first welding strip group to be cut between the first side adjacent battery cell and the defective battery cell is pulled to an inclined state, and the first welding strip group and the unwelded part at the second edge of the first side adjacent battery cell are fully opened, which provides a larger operation space for the cutting of the first welding strip group and facilitates the cutting of the first welding strip group. Similarly, after the height difference is generated between the second side adjacent battery cell and the defective battery cell, the second welding strip group to be cut between the second side adjacent battery cell and the defective battery cell is pulled to an inclined state, and the second welding strip group and the unwelded part at the second edge of the defective battery cell are fully opened, which provides a larger operation space for the cutting of the second welding strip group and facilitates the cutting of the second welding strip group.

[0019] In some embodiments, the first solder ribbon group between the defective cell and the first side-adjacent cell is cut off, including: cutting off the first solder ribbon group from directly above the first side-adjacent cell, the end of the first solder ribbon group retained on the first side-adjacent cell is tilted upward, and a first insertion gap is formed between the first side-adjacent cell and the first side edge of the replacement cell, when the first side edge of the replacement cell is overlapped with the first side-adjacent cell, the first replacement ribbon is inserted into the first insertion gap. The second solder ribbon group between the defective cell and the second side-adjacent cell is cut off, including: cutting off the second solder ribbon group from directly above the defective cell; the end of the second replacement solder ribbon group on the replacement cell is tilted upward toward the second side-adjacent cell, a second insertion gap is formed between the second replacement solder ribbon group and the replacement cell, and the second replacement ribbon is located in the second insertion gap.

[0020] By cutting off the first solder ribbon group from directly above the first side-adjacent cell, the lap welding position of the subsequent first solder ribbon group and the first replacement solder ribbon group can be located inside the first surface of the cell, and in the case that the first surface of the cell is the back surface of the cell, the lap welding position can be located on the back surface of the photovoltaic module and will not be exposed. In addition, the end of the first solder ribbon group retained on the first side-adjacent cell is tilted upward, thereby forming a first insertion gap between the first side-adjacent cell and the first side edge of the replacement cell, and when the first side edge of the replacement cell is controlled to move back to the first side-adjacent cell, the first replacement ribbon on the replacement cell can be inserted into the first insertion gap, thereby ensuring that the first replacement ribbon can smoothly enter the overlapping position of the replacement cell and the first side-adjacent cell.

[0021] Similarly, by cutting off the second solder ribbon group from directly above the defective cell, the lap welding position of the subsequent second solder ribbon group and the second replacement solder ribbon group can be located inside the first surface of the replacement cell, and in the case that the first surface of the cell is the back surface of the cell, the lap welding position can be located on the back surface of the photovoltaic module and will not be exposed. In addition, by setting the end of the second replacement solder ribbon group on the replacement cell to be tilted upward toward the second side-adjacent cell, a second insertion gap is formed between the end of the second replacement solder ribbon group and the replacement cell, and the second replacement ribbon is located in the second insertion gap. In this way, when the second side-adjacent cell is controlled to move back to the replacement cell, the first side edge of the second side-adjacent cell can be inserted into the second insertion gap, thereby ensuring that the second replacement ribbon automatically enters the overlapping position of the replacement cell and the second side-adjacent cell.

[0022] In some embodiments, the first side ribbon is pressed onto the defective cell, including: avoiding the first side-adjacent cell and the first solder ribbon group to press the first side edge of the defective cell, so that the first side edge of the defective cell is pressed against the first side ribbon; and the second side ribbon is pressed onto the defective cell, including: avoiding the second side-adjacent cell and the second solder ribbon group to press the second side ribbon onto the defective cell.

[0023] By avoiding the first side abutment cell and the first side edge of the defective cell being pressed by the first solder strip group, the first side edge of the defective cell can be pressed against the first side film strip, and when the first side abutment cell moves away from the defective cell, the first side film strip can remain on the defective cell and not move with the first side abutment cell, and the first solder strip group can be partially separated from the defective cell.

[0024] Similarly, by avoiding the second side abutment cell and the second solder strip group pressing the second side film strip onto the defective cell, it can be ensured that when the second side abutment cell moves away from the defective cell, the second side film strip can remain on the defective cell and not move with the second side abutment cell, and the second solder strip group can be partially separated from the defective cell.

[0025] In some embodiments, before the first solder strip group and the solder strips in the first replacement solder strip group are welded together one by one, the laminated battery string repair method further comprises: clamping the first solder strip group and the solder strips in the first replacement solder strip group together one by one; before the second solder strip group and the solder strips in the second replacement solder strip group are welded together one by one, the laminated battery string repair method further comprises: clamping the second solder strip group and the solder strips in the second replacement solder strip group together one by one.

[0026] After clamping the first solder strip group and the solder strips in the first replacement solder strip group together, welding is performed, which can ensure that the first solder strip group and the solder strips in the first replacement solder strip group can be reliably welded together one by one, preventing missed welding and false welding. Similarly, after clamping the second solder strip group and the solder strips in the second replacement solder strip group together, welding is performed, which can ensure that the second solder strip group and the solder strips in the second replacement solder strip group can be reliably welded together one by one, preventing missed welding and false welding.

[0027] In some embodiments, the welding method is any one of laser welding, infrared welding, hot air heating welding, and electromagnetic induction welding.

[0028] Several welding methods are provided, which can ensure that the first solder strip group and the solder strips in the first replacement solder strip group can be welded together, and the second solder strip group and the solder strips in the second replacement solder strip group can be welded together.

[0029] The present application also provides a repair device which can be applied to any of the laminated battery string repair methods described above, and the repair device comprises a repair table, a first pressing mechanism, a second pressing mechanism, a shearing mechanism, a conveying mechanism, and a welding mechanism, wherein:

[0030] The repair bench comprises a first side bearing table, an intermediate bearing table and a second side bearing table, wherein the intermediate bearing table is configured to bear a defective cell in a laminated cell string, the first side bearing table is located at a first side of the intermediate bearing table and is configured to bear a cell located at a first side of the defective cell in the laminated cell string, and the second side bearing table is located at a second side of the intermediate bearing table and is configured to bear a cell located at a second side of the defective cell in the laminated cell string;

[0031] The intermediate bearing table is configured to heat the defective cell;

[0032] The first pressing mechanism is configured to press the first side film strip onto the defective cell, and the second pressing mechanism is configured to press the second side film strip onto the defective cell;

[0033] The first side bearing table and the second side bearing table are configured to move away from the intermediate bearing table, so that the first side film strip is separated from the first side adjacent cell, the second side film strip is separated from the second side adjacent cell, and the first and second groups of solder strips are partially separated from the defective cell;

[0034] The shearing mechanism is configured to shear the first group of solder strips between the defective cell and the first side adjacent cell, and to shear the second group of solder strips between the defective cell and the second side adjacent cell;

[0035] The carrying mechanism is configured to carry the defective cell away from the intermediate bearing table, and to place a replacement cell at a position vacated after the defective cell is removed;

[0036] The first side bearing table is further configured to move towards the intermediate bearing table to reset, so that a first side edge of the replacement cell is superimposed with the first side adjacent cell, and a first replacement film strip is inserted between the replacement cell and the first side adjacent cell; the second side bearing table is further configured to move towards the intermediate bearing table to reset, so that a second side edge of the replacement cell is superimposed with the second side adjacent cell, and a second replacement film strip is inserted between the replacement cell and the second side adjacent cell;

[0037] The welding mechanism is configured to weld the first group of solder strips and the first replacement group of solder strips one by one, and to weld the second group of solder strips and the second replacement group of solder strips one by one.

[0038] The repair device provided by the application first heats the defective battery piece on the intermediate bearing table to make the first and second solder strips welded on the defective battery piece and the defective battery piece be unwelded. Between, simultaneously or after the heating and unwelding, the first and second side film strips on the two side edges of the defective battery piece are pressed on the defective battery piece by the first and second pressing mechanisms. After the unwelding, the first and second side adjacent battery pieces on the two sides of the defective battery piece are moved away from the defective battery piece by the first and second side bearing tables, so that the first and second side film strips are separated from the first and second side adjacent battery pieces, respectively. Then, the first and second solder strips are cut off by the cutting mechanism, and the defective battery piece is removed from the battery stack by the carrying mechanism. Finally, the replacement battery piece with the first and second replacement film strips, the first and second replacement solder strips is carried to the position left by the defective battery piece by the carrying mechanism, and the replacement battery piece is welded into the battery stack by the welding mechanism, that is, the repair of the battery stack is completed. The repair device provided by the application realizes the automatic repair of the battery stack.

[0039] In some embodiments, the first side edge of the defective battery piece extends out of the intermediate bearing table and overlaps on the upper side of the first side adjacent battery piece, and the initial position of the first side bearing table is lower than the intermediate bearing table in height; the first side edge of the second side adjacent battery piece extends out of the second side bearing table and overlaps on the upper side of the defective battery piece, and the initial position of the second side bearing table is not lower than the intermediate bearing table in height.

[0040] The first side edge of the defective battery piece extends out of the intermediate bearing table and overlaps on the upper side of the first side adjacent battery piece, and the initial position of the first side bearing table is set to be lower than the intermediate bearing table in height, which can prevent the stress at the overlapping position of the defective battery piece and the first side adjacent battery piece from being too large when the first pressing mechanism presses the first side edge of the defective battery piece downward, causing the first side edge of the defective battery piece and the second side edge of the first side adjacent battery piece to be damaged.

[0041] The second side edge of the defective battery piece is supported on the intermediate bearing table, the first side edge of the second side adjacent battery piece extends out of the second side bearing table and overlaps on the upper side of the defective battery piece, and the initial position of the second side bearing table is set to be not lower than the intermediate bearing table in height, which ensures that the second side film strip can be pressed on the defective battery piece by the second pressing mechanism, prevents the position of the defective battery piece pressed by the second pressing mechanism from being suspended, causes the defective battery piece to be damaged, and also reduces the stress between the overlapping part of the second side adjacent battery piece and the defective battery piece.

[0042] In some embodiments, the first and second pressing mechanisms have the same structure, the first pressing mechanism includes a plurality of pressing heads arranged along the width direction of the repair table, each pressing head in the first pressing mechanism presses the first side edge of the defective battery cell downward while avoiding the welding ribbons in the first group, and each pressing head in the second pressing mechanism presses the second side film strip downward while avoiding the welding ribbons in the second group; or, the first pressing mechanism includes a pressing plate, the bottom of the pressing plate is provided with a plurality of pressing teeth arranged along the width direction of the repair table, each pressing tooth in the first pressing mechanism presses the first side edge of the defective battery cell downward while avoiding the welding ribbons in the first group, and each pressing tooth in the second pressing mechanism presses the second side film strip downward while avoiding the welding ribbons in the second group.

[0043] By setting the first pressing mechanism, the first pressing mechanism can press the first side edge of the defective battery cell downward while avoiding the welding ribbons in the first group. Since the first group of welding ribbons is not pressed by the first pressing mechanism, when the first side bearing table moves away from the middle bearing table, the first group of welding ribbons can be partially separated from the defective battery cell. Similarly, by setting the second pressing mechanism, the second pressing mechanism can press the second side film strip on the defective battery cell downward while avoiding the welding ribbons in the second group. Since the second group of welding ribbons is not pressed by the second pressing mechanism, when the second side bearing table moves away from the middle bearing table, the second group of welding ribbons can be partially separated from the defective battery cell.

[0044] In some embodiments, the first side bearing table is configured to drive the first side adjacent battery cell to lift and translate relative to the defective battery cell, and the second side bearing table is configured to drive the second side adjacent battery cell to lift and translate relative to the defective battery cell.

[0045] By setting the first side bearing table, when the first pressing mechanism presses the first side film strip to the defective battery piece and completes the heating, the first side bearing table can drive the first side adjacent battery piece to translate away from the defective battery piece, so that the first side film strip is separated from the first side adjacent battery piece, and the first solder strip group can be partially separated from the defective battery piece. When the conveying mechanism places the replacement battery piece in the position left by the defective battery piece after being removed, the first side bearing table can drive the first side adjacent battery piece to translate towards the replacement battery piece and reset, so that the first side edge of the replacement battery piece is overlapped with the first side adjacent battery piece, and the first replacement film strip enters between the replacement battery piece and the first side adjacent battery piece. In addition, since the first side bearing table can drive the first side adjacent battery piece to rise and fall relative to the defective battery piece, before the shearing mechanism shears the first solder strip group between the defective battery piece and the first side adjacent battery piece, the first side bearing table can drive the first side adjacent battery piece to lower relative to the defective battery piece, thereby leaving enough shearing space for the shearing mechanism to facilitate the shearing of the first solder strip group.

[0046] Similarly, by setting the second side bearing table, when the second pressing mechanism presses the second side film strip to the defective battery piece, the second side bearing table can drive the second side adjacent battery piece to translate away from the defective battery piece, so that the second side film strip is separated from the second side adjacent battery piece, and the second solder strip group is partially separated from the defective battery piece. When the conveying mechanism places the replacement battery piece in the position left by the defective battery piece after being removed, the second side bearing table can drive the second side adjacent battery piece to translate towards the replacement battery piece and reset, so that the second side edge of the replacement battery piece is overlapped with the second side adjacent battery piece, and the second replacement film strip enters between the replacement battery piece and the second side adjacent battery piece. In addition, since the second side bearing table can drive the second side adjacent battery piece to rise and fall relative to the defective battery piece, before the shearing mechanism shears the second solder strip group between the defective battery piece and the second side adjacent battery piece, the second side bearing table can drive the second side adjacent battery piece to rise relative to the defective battery piece, thereby leaving enough shearing space for the shearing mechanism to facilitate the shearing of the second solder strip group.

[0047] In some embodiments, the repair device further comprises a solder strip clamping mechanism; the solder strip clamping mechanism is configured to clamp the first solder strip group and the solder strips in the first replacement solder strip group one by one; and is configured to clamp the second solder strip group and the solder strips in the second replacement solder strip group one by one.

[0048] The welding mechanism welds the solder strips in the first solder strip group and the first replacement solder strip group one by one before the solder strip clamping mechanism clamps the solder strips in the first solder strip group and the first replacement solder strip group one by one, so as to ensure that the solder strips in the first solder strip group and the first replacement solder strip group can be firmly welded one by one, preventing missing welding and false welding. Similarly, the welding mechanism welds the solder strips in the second solder strip group and the second replacement solder strip group one by one before the solder strip clamping mechanism clamps the solder strips in the second solder strip group and the second replacement solder strip group one by one, so as to ensure that the solder strips in the second solder strip group and the second replacement solder strip group can be firmly welded one by one, preventing missing welding and false welding.

[0049] In some embodiments, the repair device further comprises a heating mechanism capable of moving above the intermediate support table to heat the defective battery piece together with the intermediate support table.

[0050] The heating mechanism heats the defective battery piece together with the intermediate support table, which can accelerate the welding of the defective battery piece and the first solder strip group and the second solder strip group, thereby accelerating the work rhythm and improving the repair efficiency. After completing the heating and welding of the first solder strip group and the second solder strip group, the heating mechanism moves away from the intermediate support table to a avoiding position to avoid interference with the shearing mechanism and the welding mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 It is a structural schematic diagram of a laminated battery string;

[0052] Figure 2 It is a first surface schematic diagram of three consecutive battery pieces in a laminated battery string;

[0053] Figure 3 It is a second surface schematic diagram of three consecutive battery pieces in a laminated battery string;

[0054] Figure 4 It is a schematic diagram of a defective battery piece, a first side adjacent battery piece and a second side adjacent battery piece before implementing repair;

[0055] Figure 5 It is a schematic diagram of a first side adjacent battery piece and a second side adjacent battery piece moving away from the defective battery piece by a predetermined distance;

[0056] Figure 6 It is a schematic diagram of a first side adjacent battery piece and a second side adjacent battery piece respectively descending and ascending relative to the defective battery piece;

[0057] Figure 7 It is a structural schematic diagram of a first side adjacent battery piece, a second side adjacent battery piece and a replacement battery piece;

[0058] Figure 8A structure schematic diagram of a repair device in an embodiment of the present application;

[0059] Figure 9 A partial structure schematic diagram of a repair device in an embodiment of the present application;

[0060] Figure 10 A schematic diagram of a pressing process of the first pressing mechanism and the second pressing mechanism in an embodiment of the present application;

[0061] Figure 11 A schematic diagram of a pressing process of the first pressing mechanism on the first side edge of the defective battery piece in an embodiment of the present application;

[0062] Figure 12 A partial enlarged view of the A area in Figure 11

[0063] Figure 13 A schematic diagram of a shearing process of the shearing mechanism on the first solder strip group in an embodiment of the present application;

[0064] Figure 14 A schematic diagram of clamping of the solder strip clamping mechanism on the first solder strip group and the first replacement solder strip group in an embodiment of the present application;

[0065] Figure 15 A structure schematic diagram of the solder strip clamping mechanism in an embodiment of the present application;

[0066] Figure 16 A schematic diagram of a clamping process of the first clamp and the second clamp cooperating to clamp two solder strips to be welded in an embodiment of the present application;

[0067] Figure 17 A structure schematic diagram of the shearing mechanism in an embodiment of the present application;

[0068] Figure 18 A structure schematic diagram of the movable cutter in an embodiment of the present application;

[0069] Figure 19 A structure schematic diagram of the hook-shaped cutter in an embodiment of the present application.

[0070] Figures 1 to 19 The present application comprises:

[0071] The defective battery piece 1, the first side adjacent battery piece 2, the second side adjacent battery piece 3, the first solder strip group 4, the second solder strip group 5, the first side film strip 6, the second side film strip 7, the replacement battery piece 8, the first replacement film strip 9, the second replacement film strip 10, the first replacement solder strip group 11, and the second replacement solder strip group 12;

[0072] The repair table 20: the first side bearing table 22, the middle bearing table 21, and the second side bearing table 23; ​

[0073] First pressing mechanism 30: pressing head 31;

[0074] Second pressing mechanism 40;

[0075] Shearing mechanism 50: cutter seat 52, fixed cutter 53, movable cutter 54, cutter driving part 55, hook-shaped cutter 56, second cutting edge 541, support inclined surface 561, first cutting edge 562;

[0076] Solder strip clamping mechanism 60: mounting frame 61, first moving frame 62, second moving frame 63, first clamp 64, second clamp 65, first avoiding hole 641, first bottom surface 643, second bottom surface 644, side vertical surface 645, second avoiding hole 651;

[0077] Heating mechanism 70;

[0078] Battery piece 100, film strip 200, solder strip group 300. DETAILED DESCRIPTION

[0079] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0080] As described in the background section, the currently commonly used battery string repair equipment and repair method are mainly used for replacement repair of conventional battery strings without film strips and with no overlap between adjacent battery pieces, and it is difficult to implement repair of laminated battery strings with film strips.

[0081] Therefore, the present application provides a laminated battery string repair method which can automatically replace and repair defective battery pieces in a laminated battery string.

[0082] For the sake of brevity, Figure 4 Only the defective battery piece 1 in the laminated battery string to be repaired, the first side adjacent battery piece 2 located at the first side (such as the left side) of the defective battery piece 1, and the second side adjacent battery piece 3 located at the second side (such as the right side) of the defective battery piece 1 are shown in the figure, wherein:

[0083] The second surface (lower surface) of the defective cell sheet 1 and the first surface (upper surface) of the first side adjacent cell sheet 2 are welded through the first solder strip group 4. The overlapping part of the defective cell sheet 1 and the first side adjacent cell sheet 2 is provided with a first side film strip 6, the second surface (lower surface) of the first side film strip 6 is bonded to the first surface (upper surface) of the first side adjacent cell sheet 2, and the first surface (upper surface) of the first side film strip 6 is bonded to the second surface (lower surface) of the defective cell sheet 1 and the first solder strip group 4.

[0084] The first surface (upper surface) of the defective cell sheet 1 and the second surface (lower surface) of the second side adjacent cell sheet 3 are welded through the second solder strip group 5. The overlapping part of the defective cell sheet 1 and the second side adjacent cell sheet 3 is provided with a second side film strip 7, the second surface (lower surface) of the second side film strip 7 is bonded to the first surface (upper surface) of the defective cell sheet 1, and the first surface (upper surface) of the second side film strip 7 is bonded to the second surface (lower surface) of the second side adjacent cell sheet 3 and the second solder strip group 5.

[0085] In combination with reference Figures 4 to 7 The laminated battery string repair method of the embodiment of the present application comprises the following steps:

[0086] S1, providing a laminated battery string containing a defective cell sheet 1 to be repaired, the first surface of the laminated battery string faces upward.

[0087] S2, heating the defective cell sheet 1, so that the first solder strip group 4 welded on the second surface of the defective cell sheet 1 and the second solder strip group 5 welded on the first surface of the defective cell sheet 1 are separated from the defective cell sheet 1, wherein the first solder strip group 4 is also welded on the first surface of the first side adjacent cell sheet 2, and the second solder strip group 5 is also welded on the second surface of the second side adjacent cell sheet 3.

[0088] S3, pressing the first side film strip 6 to the defective cell sheet 1, and pressing the second side film strip 7 to the defective cell sheet 1, wherein the first side film strip 6 is a film strip located between the defective cell sheet 1 and the first side adjacent cell sheet 2, and the second side film strip 7 is a film strip located between the defective cell sheet 1 and the second side adjacent cell sheet 3.

[0089] S4, controlling the first side adjacent cell sheet 2 and the second side adjacent cell sheet 3 to move away from the defective cell sheet 1, so that the first side film strip 6 is separated from the first side adjacent cell sheet 2, the second side film strip 7 is separated from the second side adjacent cell sheet 3, and the first solder strip group 4 and the second solder strip group 5 are partially separated from the defective cell sheet 1.

[0090] S5, cutting the first solder ribbon group 4 between the defective cell sheet 1 and the first side adjacent cell sheet 2, and the second solder ribbon group 5 between the defective cell sheet 1 and the second side adjacent cell sheet 3, and removing the defective cell sheet with the first side film strip 6, the second side film strip 7, the first solder ribbon group 4 and the second solder ribbon group 5.

[0091] S6, placing the replacement cell sheet 8 with the first surface upward to the position left by the removal of the defective cell sheet 1, wherein the first side edge of the replacement cell sheet 8 is attached with the first replacement film strip 9, the second side edge of the replacement cell sheet 8 is attached with the second replacement film strip 10, the second surface of the replacement cell sheet 8 is welded with the first replacement solder ribbon group 11, and the first surface of the replacement cell sheet 8 is welded with the second replacement solder ribbon group 12.

[0092] S7, controlling the first side adjacent cell sheet 2 to move back towards the replacement cell sheet 8 so that the first side edge of the replacement cell sheet 8 is overlapped with the first side adjacent cell sheet 2, and the first replacement film strip 9 enters between the replacement cell sheet 8 and the first side adjacent cell sheet 2; and controlling the second side adjacent cell sheet 3 to move back towards the replacement cell sheet 8 so that the second side edge of the replacement cell sheet 8 is overlapped with the second side adjacent cell sheet 3, and the second replacement film strip 10 enters between the replacement cell sheet 8 and the second side adjacent cell sheet 3.

[0093] S8, welding the solder ribbons in the first solder ribbon group 4 and the first replacement solder ribbon group 11 one by one, and welding the solder ribbons in the second solder ribbon group 5 and the second replacement solder ribbon group 12 one by one.

[0094] Wherein, the step S2 and the step S3 can be implemented simultaneously, or the step S2 can be implemented first, then the step S3, or the step S3 can be implemented first, then the step S2.

[0095] In the step S1, the upward first surface of the laminated cell string is, for example, the back surface of the laminated cell string, i.e. the non-light-receiving surface of the laminated cell string.

[0096] In the step S2, the heating temperature of the defective cell sheet 1 needs to reach at least the melting point of the solder on the surface of the first solder ribbon group 4 and the second solder ribbon group 5, so as to remove the metallization connection between the first solder ribbon group 4, the second solder ribbon group 5 and the defective cell sheet 1, thereby achieving the effect of "solder removal". At the same time, the first side film strip 6 is softened by heating, and the adhesion between the first side film strip 6, the first side adjacent cell sheet 2 and the defective cell sheet 1 is removed. Similarly, the second side film strip 7 is softened by heating, and the adhesion between the second side film strip 7, the second side adjacent cell sheet 3 and the defective cell sheet 1 is removed.

[0097] In the step S4, as Figure 5As shown, the distances by which the first adjacent cell 2 and the second adjacent cell 3 move away from the defective cell 1 are set according to specific circumstances. It is sufficient to ensure that the first side film strip 6 and the second side film strip 7 can detach from the first adjacent cell 2 and the second adjacent cell 3 respectively, and that the distances between the defective cell 1 and the first adjacent cell 2, and between the defective cell 1 and the second adjacent cell 3, are sufficient to ensure that the first and second solder strip groups 4 and 2 can be cut. For example, the distance by which the first adjacent cell 2 and the second adjacent cell 3 move away from the defective cell 1 is 10mm.

[0098] In step S5, after cutting the first solder ribbon group 4 between the defective cell 1 and the adjacent cell 2 on the first side, the first solder ribbon group 4 welded to the second surface of the defective cell 1 is ultimately removed from the stacked battery string along with the defective cell 1. The first solder ribbon group 4 welded to the first surface of the adjacent cell 2 on the first side remains on the first surface of the adjacent cell 2, awaiting welding with the first replacement solder ribbon group 11 on the replacement cell 8, ultimately forming a new complete first solder ribbon group. Similarly, after cutting the second solder ribbon group 5 between the defective cell 1 and the adjacent cell 3 on the second side, the second solder ribbon group 5 welded to the first surface of the defective cell 1 is ultimately removed from the stacked battery string along with the defective cell 1. The second solder ribbon group 5 welded to the second surface of the adjacent cell 3 on the second side remains on the second surface of the adjacent cell 3 on the second side, awaiting welding with the second replacement solder ribbon group 12 on the replacement cell 8, ultimately forming a new complete second solder ribbon group.

[0099] The rework method for stacked battery strings according to this application embodiment first heats the defective battery cell 1, causing the first solder strip group 4 and the second solder strip group 5 welded to the defective battery cell 1 to desolder from the defective battery cell 1. Before, simultaneously, or after heating, the first side film strip 6 and the second side film strip 7 on both sides of the defective battery cell 1 are pressed tightly onto the defective battery cell 1. After heating and desoldering, the first side adjacent battery cell 2 and the second side adjacent battery cell 3 located on both sides of the defective battery cell 1 are controlled to move away from the defective battery cell 1, thereby causing the first side film strip 6 and the second side film strip 7 to detach from the first side adjacent battery cell 2 and the second side adjacent battery cell 3, respectively. Subsequently, the first solder strip group 4 and the second solder strip group 5 are cut to remove the defective battery cell 1 from the stacked battery string. Finally, a replacement battery cell 8 with a first replacement film strip 9, a second replacement film strip 10, a first replacement solder strip group 11, and a second replacement solder strip group 12 is welded to the position vacated after the defective battery cell was removed, thus completing the rework of the stacked battery string.

[0100] like Figure 6As shown, before implementing the step of cutting the first solder strip group between the defective cell sheet 1 and the first side-adjacent cell sheet 2, the laminated battery string repair method in the embodiment of the present application further comprises:

[0101] Controlling the first side-adjacent cell sheet 2 to descend relative to the defective cell sheet 1, so that a height difference is generated between the first side-adjacent cell sheet 2 and the defective cell sheet 1.

[0102] In this way, the first solder strip group 4 to be cut between the first side-adjacent cell sheet 2 and the defective cell sheet 1 can be pulled to an inclined state, and the first solder strip group 4 and the unwelded part at the second edge of the first side-adjacent cell sheet 2 are fully opened, providing a larger operation space for the cutting of the first solder strip group 4.

[0103] Correspondingly, before, after or at the same time of implementing the step of controlling the first side-adjacent cell sheet 2 to move back to the replacement cell sheet 8, the laminated battery string repair method in the embodiment of the present application further comprises:

[0104] Controlling the first side-adjacent cell sheet 2 to ascend back to the original position, so as to eliminate the height difference, to ensure that the first side edge of the replacement cell sheet 8 is superimposed with the first side-adjacent cell sheet 2.

[0105] Similarly, before implementing the step of cutting the second solder strip group 5 between the defective cell sheet 1 and the second side-adjacent cell sheet 3, the laminated battery string repair method in the embodiment of the present application further comprises:

[0106] Controlling the second side-adjacent cell sheet 3 to ascend relative to the defective cell sheet 1, so that a height difference is generated between the second side-adjacent cell sheet 3 and the defective cell sheet 1.

[0107] In this way, the second solder strip group 5 to be cut between the second side-adjacent cell sheet 3 and the defective cell sheet 1 can be pulled to an inclined state, and the second solder strip group 5 and the unwelded part at the second edge of the defective cell sheet 1 are fully opened, providing a larger operation space for the cutting of the second solder strip group 5.

[0108] Correspondingly, before, after or at the same time of implementing the step of controlling the second side-adjacent cell sheet 3 to move back to the replacement cell sheet 8, the laminated battery string repair method in the embodiment of the present application further comprises:

[0109] Controlling the second side-adjacent cell sheet 3 to descend back to the original position, so as to eliminate the height difference, to ensure that the second side edge of the replacement cell sheet 8 is superimposed with the second side-adjacent cell sheet 3.

[0110] Optionally, the first solder strip group 4 between the defective cell sheet 1 and the first side adjacent cell sheet 2 in step S5 is cut off, specifically, the first solder strip group 4 is cut off from directly above the first side adjacent cell sheet 2, so that the subsequent lap welding position of the first solder strip group 4 and the first replacement solder strip group 11 can be located inside the first surface of the cell sheet, and in the case that the first surface of the cell sheet is the back surface of the cell sheet, the lap welding position can be located on the back surface of the photovoltaic module and will not be exposed. In addition, the end of the first solder strip group 4 retained on the first side adjacent cell sheet 2 is inclined upward and forms a first insertion gap a between the first side adjacent cell sheet 2 as shown in the middle. Figure 7

[0111] Therefore, when the first side adjacent cell sheet 2 is controlled to move back to the replacement cell sheet 8 in step S7, the first replacement film strip 9 on the replacement cell sheet 8 can be inserted into the first insertion gap a, so as to ensure that the first replacement film strip 9 can smoothly enter the overlapping position of the replacement cell sheet 8 and the first side adjacent cell sheet 2.

[0112] Similarly, optionally, the second solder strip group 5 between the defective cell sheet 1 and the second side adjacent cell sheet 3 in step S5 is cut off, specifically, the second solder strip group 5 is cut off from directly above the defective cell sheet 1. The end of the second replacement solder strip group 12 on the replacement cell sheet 8 is inclined upward toward the second side adjacent cell sheet 3 and forms a second insertion gap b between the replacement cell sheet 8, and the second replacement film strip is located in the second insertion gap b.

[0113] Therefore, when the first side adjacent cell sheet 2 is controlled to move back to the replacement cell sheet 8 in step S7, the first side edge of the second side adjacent cell sheet 3 is inserted into the second insertion gap b, so as to ensure that the second replacement film strip 10 can smoothly enter the overlapping position of the replacement cell sheet 8 and the second side adjacent cell sheet 3.

[0114] Optionally, the first side film strip 6 is pressed onto the defective cell sheet 1 in step S3, specifically, the first side edge of the defective cell sheet 1 is pressed against the first side film strip 6 while avoiding the first side adjacent cell sheet 2 and the first solder strip group 4.

[0115] ​In this way, the first side film strip 6 can be ensured to be pressed and kept on the defective battery piece 1, and in addition, since the first side adjacent battery piece 2 and the first welding strip group 4 are not pressed, the first side adjacent battery piece 2 can be ensured to be smoothly moved away from the pressed defective battery piece 1, and the first side film strip 6 is separated from the first side adjacent battery piece 2, and the first welding strip group 4 can be moved with the first side adjacent battery piece 2, thereby realizing partial separation of the defective battery piece 1.

[0116] Similarly, the second side film strip 7 is pressed onto the defective battery piece 1 in step S3, specifically, the second side film strip 7 is pressed onto the defective battery piece 1 by avoiding the second side adjacent battery piece 3 and the second welding strip group 5.

[0117] In this way, the second side film strip 7 can be ensured to be pressed and kept on the defective battery piece 1, and in addition, since the second side adjacent battery piece 3 and the second welding strip group 5 are not pressed, the second side adjacent battery piece 3 can be ensured to be smoothly moved away from the pressed defective battery piece 1, and the second side film strip 7 is separated from the second side adjacent battery piece 3, and the second welding strip group 5 can be moved with the second side adjacent battery piece 3, thereby realizing partial separation of the defective battery piece 1.

[0118] Optionally, before the first welding strip group 4 and the welding strips in the first replacement welding strip group 11 are welded one by one in step S8, the laminated battery string repair method in the embodiment of the application further includes:

[0119] The first welding strip group 4 and the welding strips in the first replacement welding strip group 11 are clamped together one by one.

[0120] In this way, the first welding strip group 4 on the first side adjacent battery piece 2 and the welding strips in the first replacement welding strip group 11 on the replacement battery piece 8 can be ensured to be reliably welded one by one, and prevent missing welding and false welding.

[0121] Similarly, optionally, before the second welding strip group 5 and the welding strips in the second replacement welding strip group 12 are welded one by one in step S8, the laminated battery string repair method in the embodiment of the application further includes:

[0122] The second welding strip group 5 and the welding strips in the second replacement welding strip group 12 are clamped together one by one.

[0123] In this way, the second welding strip group 5 on the first side adjacent battery piece 2 and the welding strips in the second replacement welding strip group 12 on the replacement battery piece 8 can be ensured to be reliably welded one by one, and prevent missing welding and false welding.

[0124] Optionally, the welding manner of the first solder strip group 4 and the first replacement solder strip group 11, and the welding manner of the second solder strip group 5 and the second replacement solder strip group 12 are any one of laser welding, infrared welding, hot air heating welding and electromagnetic induction welding.

[0125] The above welding manners can ensure that the solder strips in the first solder strip group 4 and the first replacement solder strip group 11 can be welded together, and the solder strips in the second solder strip group 5 and the second replacement solder strip group 12 can be welded together.

[0126] Based on the same application concept, the application further provides a repair device applied to the repair method of the stacked battery string in the above embodiments.

[0127] As shown in Figures 8 to 14 The repair device in the embodiments of the application includes a repair table 20, a first pressing mechanism 30, a second pressing mechanism 40, a shearing mechanism 50, a carrying mechanism (not shown in the figure) and a welding mechanism (not shown in the figure), wherein:

[0128] The repair table 20 includes a first side bearing table 22, a middle bearing table 21 and a second side bearing table 23, wherein the middle bearing table 21 is used to bear the defective battery piece 1 in the stacked battery string, the first side bearing table 22 is located at the first side (such as the left side) of the middle bearing table 21, and is used to bear the battery piece on the first side of the defective battery piece 1 in the stacked battery string, and the second side bearing table 23 is located at the second side (such as the right side) of the middle bearing table 21, and is used to bear the battery piece on the second side of the defective battery piece 1 in the stacked battery string.

[0129] The middle bearing table 22 is configured to heat the defective battery piece 1.

[0130] The first pressing mechanism 30 is configured to press the first side film strip 6 onto the defective battery piece 1, and the second pressing mechanism 40 is configured to press the second side film strip 6 onto the defective battery piece 1.

[0131] The first side bearing table 22 and the second side bearing table 23 are configured to move away from the middle bearing table 21, so that the first side film strip 6 is separated from the first side adjacent battery piece 2, the second side film strip 7 is separated from the second side adjacent battery piece 3, and the first solder strip group 4 and the second solder strip group 5 are partially separated from the defective battery piece 1.

[0132] The shearing mechanism 50 is configured to shear the first solder strip group 4 between the defective battery piece 1 and the first side adjacent battery piece 2, and to shear the second solder strip group 5 between the defective battery piece 1 and the second side adjacent battery piece 3.

[0133] The carrying mechanism is configured to carry the defective battery piece 1 away from the middle bearing table 21, and to place the replacement battery piece 8 at the position left by the defective battery piece 1 after being removed.

[0134] The first side bearing table 22 is also configured to move back towards the middle bearing table 21 so that the first side edge of the replacement battery sheet 8 is superimposed with the first side adjacent battery sheet 2, and the first replacement film strip 9 enters between the replacement battery sheet 8 and the first side adjacent battery sheet 2. The second side bearing table 23 is also configured to move back towards the middle bearing table 21 so that the second side edge of the replacement battery sheet 8 is superimposed with the second side adjacent battery sheet 3, and the second replacement film strip 10 enters between the replacement battery sheet 8 and the second side adjacent battery sheet 3.

[0135] The welding mechanism is configured to weld the first welding strip group 4 and the welding strips in the first replacement welding strip group 11 one by one, and weld the second welding strip group 5 and the welding strips in the second replacement welding strip group 12 one by one.

[0136] In combination with reference Figures 4 to 8 , the optional working process of the repair device in the embodiment is as follows:

[0137] First, place the to-be-repaired battery sheet stack with the first surface upwards on the repair table 20, wherein the defective battery sheet 1 is located on the middle bearing table 21, the battery sheets on the first side of the defective battery sheet 1 are located on the first side bearing table 22, and the battery sheets on the second side of the defective battery sheet 1 are located on the second side bearing table 22.

[0138] Control the middle bearing table 21 to heat the defective battery sheet 1 located thereon, so that the first welding strip group 4 and the second welding strip group 5 welded on the defective battery sheet 1 are unwelded from the defective battery sheet 1.

[0139] Then, the first side film strip 6 and the second side film strip 7 on both sides of the defective battery sheet 1 are pressed on the defective battery sheet 1 by the first pressing mechanism 30 and the second pressing mechanism 40 respectively.

[0140] Subsequently, the first side adjacent battery sheet 2 and the second side adjacent battery sheet 3 located on both sides of the defective battery sheet 1 are moved away from the defective battery sheet 1 by the first side bearing table 22 and the second side bearing table 23 respectively, so that the first side film strip 6 and the second side film strip 7 are separated from the first side adjacent battery sheet 2 and the second side adjacent battery sheet 3 respectively, and the first welding strip group 4 and the second welding strip group 5 are partially separated from the defective battery sheet 1.

[0141] Subsequently, the first welding strip group 4 and the second welding strip group 5 are cut off by the shearing mechanism 50, and the defective battery sheet 1 with the first side film strip 6, the second side film strip 7, the first welding strip group 4 and the second welding strip group 5 cut off is removed from the battery sheet stack by the carrying mechanism.

[0142] Finally, the replacement battery piece 8 with the first replacement film strip 9, the second replacement film strip 10, the first replacement welding strip group 11 and the second replacement welding strip group 12 is carried to the position vacated by the defective battery piece 1 by the carrying mechanism, and the replacement battery piece 8 is welded into the jelly-roll battery string by the welding mechanism, thereby completing the repair of the jelly-roll battery string.

[0143] Optionally, after the first welding strip group 4 and the second welding strip group 5 are partially separated from the defective battery piece 1, and before the defective battery piece 1 with the first side film strip 6, the second side film strip 7, the first welding strip group 4 and the second welding strip group 5 is cut off from the jelly-roll battery string, the heating of the defective battery piece 1 by the intermediate support table 21 is turned off, so that the first welding strip group 4 and the second welding strip group 5 are re-welded on the defective battery piece, and the first side film strip 6 and the second side film strip 7 are re-stuck on the defective battery piece, thereby the carrying mechanism only needs to pick up the defective battery piece by suction, and the first side film strip 6, the second side film strip 7, the first welding strip group 4 and the second welding strip group 5 can be successfully cut off.

[0144] The repair device in the embodiment of the present application realizes the automatic repair of the jelly-roll battery string.

[0145] Optionally, the intermediate support table 22 is provided with a heating assembly, and the intermediate support table 22 heats the defective battery piece through the heating assembly. The heating assembly is, for example, a heating rod and a thermocouple inserted into the intermediate support table 22, wherein the heating rod is used to heat the intermediate support table 22, and the thermocouple is used to monitor the temperature to ensure that the intermediate support table 22 is heated to a predetermined temperature by the heating rod.

[0146] Optionally, the end of the first side support table 22 close to the intermediate support table 21 is provided with a suction hole, and the first side support table 22 adsorbs the first side adjacent battery piece 2 through the suction hole. In this way, when the first side support table 22 moves away from the intermediate support table 21, the first side adjacent battery piece 2 can move with the first side support table 22, thereby separating from the defective battery piece 1.

[0147] Similarly, the end of the second side support table 23 close to the intermediate support table 21 is provided with a suction hole, and the second side support table 23 adsorbs the second side adjacent battery piece 3 through the suction hole. In this way, when the second side support table 23 moves away from the intermediate support table 21, the second side adjacent battery piece 3 can move with the second side support table 23, thereby separating from the defective battery piece 1.

[0148] In order to prevent the first side edge of the defective cell 1 from being damaged by the first pressing mechanism 30 when pressing the first side edge of the defective cell 1 downwards, the stress between the first side edge of the defective cell 1 and the second side edge of the first side adjacent cell 2 is too large. Alternatively, as shown in Figure 11 and Figure 12 the first side edge of the defective cell 1 extends out of the middle carrier platform 21 and overlaps the first side adjacent cell 2, and the initial position of the first side carrier platform 22 is lower than the middle carrier platform 21. The initial position of the first side carrier platform 22 described herein refers to the position of the first side carrier platform 22 when the cell stack to be repaired is placed on the repair platform 20.

[0149] In order to ensure that the second pressing mechanism 40 can press the second side film strip 7 onto the defective cell 1, and prevent the defective cell 1 from being damaged by the second pressing mechanism 40. Alternatively, the second side edge of the defective cell 1 is carried on the middle carrier platform 21, the first side edge of the second side adjacent cell 3 extends out of the second side carrier platform 23 and overlaps the defective cell 1, and the initial position of the second side carrier platform 23 is not lower than the middle carrier platform 22. For example, the initial position of the second side carrier platform 23 is higher than the middle carrier platform 22, or is flush with the middle carrier platform 22, so as to reduce the stress between the second side adjacent cell 3 and the defective cell 1. Similarly, the initial position of the second side carrier platform 23 described herein refers to the position of the second side carrier platform 23 when the cell stack to be repaired is placed on the repair platform 20.

[0150] Alternatively, the first pressing mechanism 30 and the second pressing mechanism 40 have the same structure. Taking the first pressing mechanism 30 as an example, in an alternative embodiment, as shown in Figures 10 to 12 the first pressing mechanism 30 includes a plurality of pressing heads 31 arranged along the width direction of the repair platform 20 (as shown by the arrow in the figure). Each pressing head 31 in the first pressing mechanism 30 presses the first side edge of the defective cell 1 downwards, avoiding the welding strips in the first welding strip group 4. In this way, on the one hand, the first pressing mechanism 30 can press the first side film strip 6 onto the defective cell 1; on the other hand, since the first welding strip group 4 is not pressed by the first pressing mechanism 30, when the first side carrier platform 22 moves away from the middle carrier platform 21, the first welding strip group 4 can be partially separated from the defective cell 1.

[0151] Similarly, each pressing head 31 in the second pressing mechanism 40 presses down the second side film strip 7 away from the second solder strip group 5. In this way, on the one hand, the second pressing mechanism 40 can press the second side film strip 7 onto the defective battery piece 1; on the other hand, since the second solder strip group 5 is not pressed by the second pressing mechanism 40, when the second side bearing table 23 moves away from the middle bearing table 21, the second solder strip group 5 can be partially separated from the defective battery piece 1.

[0152] Optionally, the first pressing mechanism 30 and the second pressing mechanism 40 each have a driving assembly for driving the plurality of pressing heads 31 to lift or lower to implement the pressing action.

[0153] Still taking the first pressing mechanism 30 as an example, in another optional embodiment, the first pressing mechanism 30 includes a pressing plate, and the bottom of the pressing plate is provided with a plurality of pressing teeth arranged along the width direction of the repair table 20. Each pressing tooth in the first pressing mechanism 30 presses down the first side edge of the defective battery piece 1 away from the first solder strip group 4. Similarly, each pressing tooth in the second pressing mechanism 40 presses down the second side film strip 7 away from the second solder strip group 5.

[0154] Similarly, the first pressing mechanism 30 and the second pressing mechanism 40 each have a driving assembly for driving the pressing plate to lift or lower to implement the pressing action.

[0155] Optionally, the first side bearing table 22 is configured to drive the first side adjacent battery piece 2 to lift or lower relative to the defective battery piece 1, and to drive the first side adjacent battery piece 2 to translate towards or away from the defective battery piece 1.

[0156] By providing the first side bearing table 22, when the first pressing mechanism 30 presses the first side film strip 6 onto the defective battery piece 1, the first side bearing table 22 can drive the first side adjacent battery piece 2 to translate away from the defective battery piece 1, so that the first side film strip 6 is separated from the first side adjacent battery piece 2, and the first solder strip group 4 can be partially separated from the defective battery piece 1. When the carrying mechanism places the replacement battery piece 8 into the position vacated by the defective battery piece 1, the first side bearing table 22 can drive the first side adjacent battery piece 2 to translate towards the replacement battery piece 8 to reset, so that the first side edge of the replacement battery piece 8 is overlapped with the first side adjacent battery piece 2, and the first replacement film strip 9 enters between the replacement battery piece 8 and the first side adjacent battery piece 2. In addition, since the first side bearing table 22 can drive the first side adjacent battery piece 2 to lift or lower relative to the defective battery piece 1, before the shearing mechanism 50 shears the first solder strip group 4 between the defective battery piece 1 and the first side adjacent battery piece 2, the first side bearing table 22 can drive the first side adjacent battery piece 2 to lower relative to the defective battery piece 1, so as to leave a large enough shearing space for the shearing mechanism 50 to facilitate the shearing mechanism 50 to shear the first solder strip group 4.

[0157] Similarly, the second side bearing table 23 is configured to drive the second side adjacent cell tab 3 to lift relative to the defective cell tab 1 and to translate towards or away from the defective cell tab 1.

[0158] By providing the second side bearing table 23, when the second pressing mechanism 40 presses the second side film strip 7 onto the defective cell tab 1, the second side bearing table 23 can drive the second side adjacent cell tab 3 to translate away from the defective cell tab 1, so that the second side film strip 7 is separated from the second side adjacent cell tab 3, and the second solder ribbon group 5 is partially separated from the defective cell tab 1. When the carrying mechanism places the replacement cell tab 8 to the position left by the defective cell tab 1, the second side bearing table 23 can drive the second side adjacent cell tab 3 to translate towards the replacement cell tab 8 to reset, so that the second side edge of the replacement cell tab 8 is overlapped with the second side adjacent cell tab 3, and the second replacement film strip 10 enters between the replacement cell tab 8 and the second side adjacent cell tab 3. In addition, since the second side bearing table 23 can drive the second side adjacent cell tab 3 to lift relative to the defective cell tab 1, before the shearing mechanism 50 shears the second solder ribbon group 5 between the defective cell tab 1 and the second side adjacent cell tab 3, the second side bearing table 23 can drive the second side adjacent cell tab 3 to lift relative to the defective cell tab 1, so as to leave enough shearing space for the shearing mechanism 50 to shear the second solder ribbon group 5.

[0159] As shown in Figure 14 Optionally, the repair device in the embodiment of the present application further comprises a solder ribbon clamping mechanism 60. The solder ribbon clamping mechanism 60 is configured to clamp the solder ribbons in the first solder ribbon group 4 and the first replacement solder ribbon group 11 one by one, and is configured to clamp the solder ribbons in the second solder ribbon group 5 and the second replacement solder ribbon group 12 one by one.

[0160] Before the welding mechanism welds the solder ribbons in the first solder ribbon group 4 and the first replacement solder ribbon group 11 one by one, the solder ribbon clamping mechanism 60 clamps the solder ribbons in the first solder ribbon group 4 and the first replacement solder ribbon group 11 one by one, so as to ensure that the solder ribbons in the first solder ribbon group 4 and the first replacement solder ribbon group 11 can be firmly welded one by one, preventing missing welding and false welding.

[0161] Similarly, before the welding mechanism welds the solder ribbons in the second solder ribbon group 5 and the second replacement solder ribbon group 12 one by one, the solder ribbon clamping mechanism 60 clamps the solder ribbons in the second solder ribbon group 5 and the second replacement solder ribbon group 12 one by one, so as to ensure that the solder ribbons in the second solder ribbon group 5 and the second replacement solder ribbon group 12 can be firmly welded one by one, preventing missing welding and false welding.

[0162] As shown in Figure 15As shown, optionally, the welding strip clamping mechanism 60 includes a movable module (not shown in the figure), a mounting frame 61, a first movable frame 62, and a second movable frame 63, wherein:

[0163] Mounting bracket 61 is connected to the drive end of the moving module, which is used to drive the mounting bracket 61 to move.

[0164] The first movable frame 62 and the second movable frame 63 are disposed opposite to each other on the mounting frame 61, and the first movable frame 62 and the second movable frame 63 are configured to move relative to each other.

[0165] The first movable frame 62 is provided with a plurality of first clamps 64, each first clamp 64 being connected to the first movable frame 62 in a floating manner via a first floating connector and extending downward from the first movable frame 62. The second movable frame 63 is provided with a plurality of second clamps 65 corresponding one-to-one with the first clamps 64, each second clamp 65 being connected to the second movable frame 63 in a floating manner via a second floating connector and extending downward from the second movable frame 63. Each first clamp 64 and its corresponding second clamp 65 constitute a welding strip clamping assembly, and the welding strip clamping assembly is provided with welding clearance holes.

[0166] When the mobile module drive mounting frame 61 descends, the first clamps 64 and second clamps 65 of each welding strip clamping assembly can adaptively float up and down after being subjected to force at the bottom (i.e., after contacting the battery cell or welding strip group), thereby ultimately achieving the same height for all the first clamps 64 and second clamps 65. Then, through the relative movement of the first moving frame 62 and the second moving frame 63, the first clamps 64 cooperate with the corresponding second clamps 65 to clamp the two welding strips to be welded, so that the two welding strips to be welded overlap together. The two welding strips to be welded are one welding strip in the first welding strip group 4 and one welding strip in the first replacement welding strip group 11, or one welding strip in the second welding strip group 5 and one welding strip in the second replacement welding strip group 12.

[0167] like Figure 16 As shown, optionally, the bottom surfaces of the clamping ends of the first chuck 64 and the second chuck 65 are both stepped surfaces. The stepped surface includes a first bottom surface 643, a second bottom surface 644 and a side surface 645, wherein the second bottom surface 644 is lower than the first bottom surface 643, and the side surface 645 is located between the first bottom surface 643 and the second bottom surface 644.

[0168] The side face 645 of the first clamp 64 and the side face 645 of the second clamp 65 are opposite to each other. The side face 645 of the first clamp 64 and the side face 645 of the second clamp 65 move closer to each other or further away from each other as the first moving frame 62 and the second moving frame 63 move relative to each other.

[0169] The clamping process of the first clamp 64 and the second clamp 65 to the first solder strip (e.g. one solder strip in the first solder strip group 4) and the second solder strip (e.g. one solder strip in the first replacement solder strip group 11) to be overlapped is as follows: when the moving module driving mounting frame 61 is lowered, the first bottom surface 643 of the first clamp 64 and the first bottom surface 643 of the second clamp 65 are pressed on the first solder strip and the second solder strip to be welded, respectively. When the first moving frame 62 and the second moving frame 63 move relative to each other, the side vertical surface 645 of the first clamp 64 and the side vertical surface 645 of the second clamp 65 clamp the first solder strip and the second solder strip that are pressed, so that the first solder strip and the second solder strip are overlapped horizontally.

[0170] With continued reference to Figure 16 As shown, the clamping end of the first clamp 64 is provided with a first avoiding hole 641, and the clamping end of the second clamp 65 is provided with a second avoiding hole 651, and the first avoiding hole 641 and the second avoiding hole 651 jointly enclose a welding avoiding hole. When the side vertical surface 645 of the first clamp 64 and the side vertical surface 645 of the second clamp 65 clamp the first solder strip and the second solder strip that are pressed, the overlapping part of the first solder strip and the second solder strip is exposed by the welding avoiding hole. The welding mechanism can pass through the first avoiding hole 641 and the second avoiding hole 651 to implement welding on the overlapping part of the first solder strip and the second solder strip.

[0171] Of course, the solder strip clamping mechanism 60 can also adopt other structures of the existing solder strip clamping mechanism, as long as it can clamp the solder strips in the first solder strip group 4 and the first replacement solder strip group 11 one by one, and clamp the solder strips in the second solder strip group 5 and the second replacement solder strip group 12 one by one.

[0172] As shown in Figures 17 to 19 Optionally, the shearing mechanism 50 includes a moving mechanism (not shown in the figure), a cutter seat 52, a fixed cutter 53, a movable cutter 54, and a cutter driving part 55, wherein:

[0173] The cutter driving part 55 is connected to the cutter seat 52, and the cutter seat 52 is connected to the moving part of the moving mechanism, and the moving mechanism is used to drive the cutter seat 52 to translate and lift.

[0174] The fixed cutter 53 is fixedly connected to the cutter seat 52, and a plurality of hook-shaped knives 56 are arranged side by side and spaced apart at the lower side edge of the fixed cutter 53. A supporting inclined surface 561 for supporting the solder strip is formed on the hook-shaped part of the hook-shaped knife 56, and a first cutting edge 562 is formed at the upper end of the supporting inclined surface 561.

[0175] The movable cutter 54 is slidingly connected to the cutter seat 52 and abuts against the fixed cutter 53, and a second cutting edge 541 is formed at the lower side edge of the movable cutter 54.

[0176] The driving end of the cutter driving part 55 is connected with the movable cutter 54, and the cutter driving part 55 is used to drive the movable cutter 54 to slide relative to the fixed cutter 53, so as to realize the position switching of the movable cutter 54 between the avoiding position and the cutting position.

[0177] When the movable cutter 54 slides to the avoiding position, the gap for the welding strip to pass through is formed between each supporting slope 561 and the second blade 541.

[0178] When the movable cutter 54 slides to the cutting position, the second blade 541 cooperates with each first blade 562 to cut the welding strip passing therebetween.

[0179] Taking the shearing process of the first welding strip group 4 as an example, the optional working process of the shearing mechanism 50 is as follows:

[0180] In the initial state, the cutter seat 52 and the components thereon are away from the first welding strip group 4. The movable cutter 54 is at the avoiding position, and the gap for the welding strip to pass through is formed between each supporting slope 561 of the hook-shaped cutter 56 and the second blade 541 of the movable cutter 54.

[0181] When it is needed to implement the cutting of the first welding strip group 4, the moving mechanism drives the cutter seat 52 to move, so that each hook-shaped cutter 56 moves to the area above the adjacent two welding strips in the first welding strip group 4, and the first blade 562 of the hook-shaped cutter 56 is located directly above the to-be-cut position of the corresponding welding strip. Then, the moving mechanism drives the cutter seat 52 to descend, so that each hook-shaped cutter 56 passes through the adjacent two welding strips downward.

[0182] Next, the moving mechanism drives the cutter seat 52 to translate vertically to the length direction of the welding strip, so that each hook-shaped cutter 56 moves to the below of the corresponding welding strip, the welding strip is supported on the supporting slope 561 of the hook-shaped cutter 56, and the to-be-cut position of the welding strip is lapped on the first blade 562.

[0183] Finally, the cutter driving part 55 drives the movable cutter 54 to slide downward to the cutting position, and the second blade 541 of the movable cutter 54 cooperates with the first blade 562 of each hook-shaped cutter 56 to cut the welding strip passing therebetween.

[0184] The cutter driving part 55 can adopt various existing driving mechanisms capable of driving the movable cutter 54 to slide upward and downward relative to the fixed cutter 53.

[0185] Of course, the shearing mechanism 50 can also adopt other structures of the shearing mechanism, as long as it can shear the first welding strip group 4 and the second welding strip group 5.

[0186] For example, Figure 8 For example, Figure 9As shown, optionally, the rework device in the embodiment of the present application further comprises a heating mechanism 70, which is capable of moving above the intermediate support table 21 to cooperate with the intermediate support table 21 to heat the defective battery piece 1.

[0187] The heating mechanism 70 cooperates with the intermediate support table 21 to heat the defective battery piece, which can accelerate the de-welding of the defective battery piece 1 and the first and second solder ribbon groups 4 and 5 welded thereon, thereby accelerating the work pace and improving the rework efficiency. After completing the heating and de-welding of the first and second solder ribbon groups 4 and 5, the heating mechanism 70 moves away from the intermediate support table 21 to the avoiding position, so as to avoid interference with the shearing mechanism and the welding structure.

[0188] The heating mechanism 70 can adopt various existing heating mechanisms capable of heating the defective battery piece 1, such as an infrared lamp box.

[0189] When the rework device is provided with the heating mechanism 70, the first and second pressing mechanisms 30 and 40 can be integrated and installed on the heating mechanism 70, so that the first and second pressing mechanisms 30 and 40 can move synchronously with the heating mechanism 70 to above the intermediate support table 21. When the heating mechanism 70 cooperates with the intermediate support table 21 to complete the heating of the defective battery piece 1, the first and second pressing mechanisms 30 and 40 immediately implement the pressing of the first and second side film strips 6 and 7. In this way, the work pace can be accelerated, the work efficiency can be improved, and the structural complexity and equipment cost of the equipment can be reduced.

[0190] Of course, the first and second pressing mechanisms 30 and 40 can also be installed on an additional driving mechanism, which drives the first and second pressing mechanisms 30 and 40 to above the intermediate support table 21, so that the first and second pressing mechanisms 30 and 40 implement the pressing of the first and second side film strips 6 and 7.

[0191] The carrying mechanism in the embodiment of the present application can adopt various existing mechanisms capable of carrying the battery piece, for example, a moving part and a suction cup assembly connected to the moving part. The moving part drives the suction cup assembly to move, so as to drive the suction cup assembly to suck the defective battery piece 1 sheared from the intermediate support table 21, carry the defective battery piece 1 to the recycling station, suck the replacement battery piece 8 from the feeding station, and carry the replacement battery piece 8 to the intermediate support table 21.

[0192] The application is described in sufficient detail to enable those skilled in the art to make and use it, and the application thus described is to be considered as illustrative and not restrictive. Various modifications to the application in addition to those described herein will be apparent to those skilled in the art from this disclosure. The scope of the application is indicated by the appended claims, rather than by the foregoing description. In view of the many possible embodiments to which the principles of the application can be applied, it will be recognized that the embodiments described herein with explanations of the benefits and advantages are meant to be illustrative only and not limiting. No limitation is intended to the details of construction or design herein shown, other than as described in the claims. Some of the embodiments specifically recited in the claims can be used in combination with others in each of the claims. It is therefore evident that there are many alternatives that fall within the scope of the application.

Claims

1. A method for repairing stacked battery strings, characterized in that, The application relates to a method for replacing a defective cell in a laminated battery string, wherein the laminated battery string is formed by welding a plurality of cells by a plurality of welding ribbons, and the method comprises the following steps: providing a laminated battery string with a defective cell to be repaired, wherein a first surface of the laminated battery string faces upwards; heating the defective cell so that a first welding ribbon group welded on a second surface of the defective cell and a second welding ribbon group welded on a first surface of the defective cell are separated from the defective cell, wherein the first welding ribbon group is also welded on a first surface of a first adjacent cell, and the second welding ribbon group is also welded on a second surface of a second adjacent cell; pressing a first side film strip to the defective cell and a second side film strip to the defective cell, wherein the first side film strip is located between the defective cell and the first adjacent cell, and the second side film strip is located between the defective cell and the second adjacent cell; controlling the first adjacent cell and the second adjacent cell to move away from the defective cell so that the first side film strip is separated from the first adjacent cell, the second side film strip is separated from the second adjacent cell, and the first welding ribbon group and the second welding ribbon group are partially separated from the defective cell; cutting the first welding ribbon group between the defective cell and the first adjacent cell and the second welding ribbon group between the defective cell and the second adjacent cell, and removing the defective cell with the first side film strip, the second side film strip, the first welding ribbon group and the second welding ribbon group; placing a replacement cell with a first surface facing upwards to a position left by the removed defective cell, wherein a first replacement film strip is attached to a first side edge of the replacement cell, a second replacement film strip is attached to a second side edge of the replacement cell, a first replacement welding ribbon group is welded on a second surface of the replacement cell, and a second replacement welding ribbon group is welded on a first surface of the replacement cell; controlling the first adjacent cell to move towards the replacement cell so that a first side edge of the replacement cell is overlapped with the first adjacent cell and the first replacement film strip is located between the replacement cell and the first adjacent cell, and controlling the second adjacent cell to move towards the replacement cell so that a second side edge of the replacement cell is overlapped with the second adjacent cell and the second replacement film strip is located between the replacement cell and the second adjacent cell; welding welding ribbons in the first welding ribbon group and the first replacement welding ribbon group one by one, and welding welding ribbons in the second welding ribbon group and the second replacement welding ribbon group one by one.

2. The method according to claim 1, wherein the first replacement film strip and the second replacement film strip are made of a material same as that of the first side film strip and the second side film strip. Before the first weld band group between the defective cell piece and the first side adjacent cell piece is cut off, the laminated battery string repair method further comprises: controlling the first side adjacent cell piece to drop relative to the defective cell piece, so that a height difference is generated between the first side adjacent cell piece and the defective cell piece; before, after or at the same time of controlling the first side adjacent cell piece to move back to the replacement cell piece, the laminated battery string repair method further comprises: controlling the first side adjacent cell piece to rise back to the original position; Before the second weld band group between the defective cell piece and the second side adjacent cell piece is cut off, the laminated battery string repair method further comprises: controlling the second side adjacent cell piece to rise relative to the defective cell piece, so that a height difference is generated between the second side adjacent cell piece and the defective cell piece; before, after or at the same time of controlling the second side adjacent cell piece to move back to the replacement cell piece, the laminated battery string repair method further comprises: controlling the second side adjacent cell piece to drop back to the original position.

3. The method of claim 2, wherein the method further comprises: The cutting off of the first weld band group between the defective cell piece and the first side adjacent cell piece comprises: cutting off the first weld band group from directly above the first side adjacent cell piece, the end of the first weld band group remaining on the first side adjacent cell piece is tilted upward, and a first insertion gap is formed between the first side adjacent cell piece and the first replacement film strip when the first side edge of the replacement cell piece is overlapped with the first side adjacent cell piece; The cutting off of the second weld band group between the defective cell piece and the second side adjacent cell piece comprises: cutting off the second weld band group from directly above the defective cell piece; the end of the second replacement weld band group on the replacement cell piece is tilted upward toward the second side adjacent cell piece, a second insertion gap is formed between the second replacement film strip and the replacement cell piece.

4. The method of claim 1, wherein the method further comprises: The pressing of the first side film strip onto the defective cell piece comprises: pressing the first side edge of the defective cell piece to avoid the first side adjacent cell piece and the first weld band group, so that the first side edge of the defective cell piece presses the first side film strip; The pressing of the second side film strip onto the defective cell piece comprises: pressing the second side film strip onto the defective cell piece to avoid the second side adjacent cell piece and the second weld band group.

5. The laminated battery string repair method of claim 1, wherein: Before the first weld band group and the weld bands in the first replacement weld band group are welded together one by one, the laminated battery string repair method further comprises: clamping the first weld band group and the weld bands in the first replacement weld band group together one by one; Before the second weld band group and the weld bands in the second replacement weld band group are welded together one by one, the laminated battery string repair method further comprises: clamping the second weld band group and the weld bands in the second replacement weld band group together one by one.

6. The method of claim 1, wherein: The welding manner is any one of laser welding, infrared welding, hot air heating welding and electromagnetic induction welding.

7. A rework apparatus, characterized by The repair device comprises a repair table, a first pressing mechanism, a second pressing mechanism, a shearing mechanism, a carrying mechanism and a welding mechanism. The repair table comprises a first side bearing table, an intermediate bearing table and a second side bearing table, wherein the intermediate bearing table is used for bearing a defective cell in a laminated cell string, the first side bearing table is located at a first side of the intermediate bearing table and is used for bearing a cell located at a first side of the defective cell in the laminated cell string, and the second side bearing table is located at a second side of the intermediate bearing table and is used for bearing a cell located at a second side of the defective cell in the laminated cell string. The intermediate bearing table is configured to heat the defective cell. The first pressing mechanism is configured to press a first side film strip onto the defective cell, and the second pressing mechanism is configured to press a second side film strip onto the defective cell. The first side bearing table and the second side bearing table are configured to move away from the intermediate bearing table, so that the first side film strip is separated from the first side adjacent cell, the second side film strip is separated from the second side adjacent cell, and the first solder strip group and the second solder strip group are partially separated from the defective cell. The shearing mechanism is configured to shear the first solder strip group between the defective cell and the first side adjacent cell, and to shear the second solder strip group between the defective cell and the second side adjacent cell. The carrying mechanism is configured to carry the defective cell away from the intermediate bearing table, and to place a replacement cell at a position vacated after the defective cell is removed. The first side bearing table is further configured to move towards the intermediate bearing table to reset, so that a first side edge of the replacement cell is overlapped with the first side adjacent cell, and a first replacement film strip enters between the replacement cell and the first side adjacent cell; and the second side bearing table is further configured to move towards the intermediate bearing table to reset, so that a second side edge of the replacement cell is overlapped with the second side adjacent cell, and a second replacement film strip enters between the replacement cell and the second side adjacent cell. The welding mechanism is configured to weld the first solder strip group and the first replacement solder strip group one by one, and to weld the second solder strip group and the second replacement solder strip group one by one.

8. The rework apparatus of claim 7, wherein, A first side edge of the defective cell extends out of the intermediate bearing table and is overlapped on an upper side of the first side adjacent cell, and an initial position of the first side bearing table is lower than the intermediate bearing table. The second side edge of the defective cell is carried on the intermediate carrying table, the first side edge of the defective cell is extended out of the second side carrying table and superimposed on the upper side of the defective cell, and the initial position of the second side carrying table is not lower than the intermediate carrying table in height.

9. The rework apparatus of claim 7, wherein, The first pressing mechanism and the second pressing mechanism are the same in structure, the first pressing mechanism includes a plurality of pressing heads arranged along the width direction of the repair table, each pressing head in the first pressing mechanism presses the first side edge of the defective cell downward while avoiding each solder strip in the first solder strip group, and each pressing head in the second pressing mechanism presses the second side film strip downward while avoiding each solder strip in the second solder strip group; or, The first pressing mechanism includes a pressing plate, the bottom of the pressing plate is provided with a plurality of pressing teeth arranged along the width direction of the repair table, each pressing tooth in the first pressing mechanism presses the first side edge of the defective cell downward while avoiding each solder strip in the first solder strip group, and each pressing tooth in the second pressing mechanism presses the second side film strip downward while avoiding each solder strip in the second solder strip group.

10. The repair device according to claim 7, wherein: The first side carrying table is configured to drive the first side adjacent cell to ascend or descend relative to the defective cell and to translate the first side adjacent cell towards or away from the defective cell; The second side carrying table is configured to drive the second side adjacent cell to ascend or descend relative to the defective cell and to translate the second side adjacent cell towards or away from the defective cell.

11. The rework apparatus of claim 7, wherein The repair device further comprises a solder strip clamping mechanism; The solder strip clamping mechanism is configured to clamp the first solder strip group and the solder strips in the first replacement solder strip group one by one, and to clamp the second solder strip group and the solder strips in the second replacement solder strip group one by one.

12. The rework apparatus of claim 7, wherein, The repair device further comprises a heating mechanism, which is movable above the intermediate carrying table to heat the defective cell together with the intermediate carrying table.

Images