Battery string repair equipment

Abstract

The utility model provides battery string repairing equipment. The battery string repairing equipment comprises a first carrying device, a second carrying device, a disassembling platform, a welding strip cutting device, a welding platform, a third carrying device, a welding strip clamping device and a welding device. The first carrying device carries the to-be-repaired battery string to the disassembling platform; and the disassembling platform is matched with the welding strip cutting device to cut off the welding strip between the defective battery piece and the adjacent battery piece. The second carrying device carries the to-be-repaired battery string with the defective battery pieces removed to the welding platform, and the third carrying device carries the replacement battery pieces to the defect positions in the to-be-repaired battery string on the welding platform. The welding strip clamping device clamps the welding strip of the replacement battery piece and the welding strip to be lapped on the adjacent battery piece, and the welding device welds the clamped welding strip of the replacement battery piece and the welding strip to be lapped on the adjacent battery piece. The disassembling platform and the welding platform are arranged, the defective battery pieces are cut off and removed on the disassembling platform, and welding and stringing of the replaced battery pieces are carried out on the welding platform.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module manufacturing, specifically a battery string repair device. Background Technology

[0002] When a battery string contains defective cells that can be replaced, the string can be repaired by replacing the cells. Figure 9 Taking a battery string as an example, the connecting solder strip between the defective battery cell 300 and its adjacent battery cell 400 is cut off. The location of the cut solder strip is as follows: Figure 1 The defective battery cell 300 is removed from the battery string by marking the "×" position. The replacement battery cell 500 with solder ribbon is then placed in the empty position after the defective battery cell 300 is removed, and the solder ribbon on the replacement battery cell 500 is welded to the solder ribbon on the adjacent battery cell 400.

[0003] In existing battery string repair equipment, after the battery string to be repaired is placed on the repair platform, both the cutting and removal of defective cells and the welding of replacement cells are carried out on the same platform. In other words, the welding of replacement cells can only be carried out after the defective cells have been cut and removed, resulting in low repair efficiency for existing battery strings. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a battery string repair device, the detailed technical solution of which is as follows:

[0005] A battery string repair device is used to repair battery strings to be repaired. The battery string repair device includes a first handling device, a second handling device, a disassembly platform, a solder strip cutting device, a welding platform, a third handling device, a solder strip clamping device, and a welding device, wherein:

[0006] The battery string awaiting repair must include at least one defective battery cell.

[0007] The first handling device is located above or on the side of the dismantling platform and is configured to handle the battery string to be repaired onto the dismantling platform.

[0008] The welding strip cutting device is set above or on the side of the disassembly platform. The disassembly platform is configured to cooperate with the welding strip cutting device to cut the welding strip between the defective battery cell in the battery string to be repaired and the adjacent battery cell on the first side, and / or cut the welding strip between the defective battery cell in the battery string to be repaired and the adjacent battery cell on the second side.

[0009] The second transport device is located above or beside the disassembly platform and the welding platform, and is configured to remove the battery string to be repaired from the disassembly platform and transport it to the welding platform after the defective battery cells have been removed.

[0010] The third transport device is located above or on the side of the welding platform and is configured to transport the replacement battery cell to the defect location in the battery string to be repaired after the defective battery cell has been removed from the welding platform. The defect location is the empty position after the defective battery cell has been removed. The replacement battery cell is welded with a first side weld strip and a second side weld strip.

[0011] Both the welding strip clamping device and the welding device are located above or on the side of the welding platform. The welding strip clamping device is configured to clamp the first side welding strip of the replacement cell located at the defect location together with the welding strip to be overlapped on the first side adjacent cell, and / or clamp the second side welding strip of the replacement cell located at the defect location together with the welding strip to be overlapped on the second side adjacent cell.

[0012] The welding device is configured to weld the first side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the first side adjacent battery cell, and / or weld the second side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the second side adjacent battery cell.

[0013] The battery string repair equipment provided in this application includes a disassembly platform and a welding platform. Defective battery cells are cut and removed on the disassembly platform, while replacement cells are welded into the string on the welding platform. Thus, while the ribbon cutting device and disassembly platform are cutting and removing defective battery cells from one battery string to be repaired, the ribbon clamping device, welding device, and welding platform can weld replacement cells into another battery string to be repaired. This allows for simultaneous cutting and removal of defective battery cells and welding of replacement cells into the string, improving the efficiency of battery string repair.

[0014] In some embodiments, the disassembly platform includes a first mounting base, an intermediate disassembly platform, a first side disassembly platform, a second side disassembly platform, a first driving unit, and a second driving unit, wherein: the first side disassembly platform, the intermediate disassembly platform, and the second side disassembly platform are sequentially mounted on the first mounting base; the intermediate disassembly platform is configured to carry and adsorb defective battery cells in the battery string to be repaired; the first side disassembly platform is configured to carry battery cells located on a first side of the defective battery cells and be able to adsorb at least adjacent battery cells on the first side; the first driving unit is disposed on the first mounting base and is throttle-connected to the first side disassembly platform, and the first driving unit is configured to drive the first side disassembly platform toward or away from the first side disassembly platform. The first side disassembly platform is moved away from the intermediate disassembly platform to achieve docking and separation with the intermediate disassembly platform, and the first side disassembly platform is driven to rise and fall to achieve alignment and misalignment with the intermediate disassembly platform in the height direction; the second side disassembly platform is configured to carry the battery cell located on the second side of the defective battery cell and at least be able to adsorb the adjacent battery cell on the second side; the second drive unit is disposed on the first mounting base and is connected to the second side disassembly platform in a transmission manner; the second drive unit is configured to drive the second side disassembly platform to move toward or away from the intermediate disassembly platform to achieve docking and separation with the intermediate disassembly platform, and to drive the second side disassembly platform to rise and fall to achieve alignment and misalignment with the intermediate disassembly platform in the height direction.

[0015] By configuring the disassembly platform to include a central disassembly platform, and a first-side disassembly platform and a second-side disassembly platform that can be moved horizontally and vertically relative to the central disassembly platform, the disassembly platform can work with the solder strip cutting device to cut the solder strip between the defective battery cell and the adjacent battery cell on the first side, and / or cut the solder strip between the defective battery cell and the adjacent battery cell on the second side in the battery string to be repaired, and separate the cut-off defective battery cell from the adjacent battery cell on the first side and / or the adjacent battery cell on the second side, so as to facilitate the removal of the defective battery cell from the battery string.

[0016] In some embodiments, the disassembly platform further includes a third drive unit, wherein the intermediate disassembly platform is rotatably mounted on the first mounting base via a horizontal pivot, the third drive unit is disposed on the first mounting base and is drively connected to the intermediate disassembly platform, and the third drive unit is configured to drive the intermediate disassembly platform to rotate about the horizontal pivot to switch between a horizontal state and an inclined state.

[0017] After the welding strip is cut, the third drive unit drives the intermediate disassembly table to tilt, thereby automatically throwing out the defective cells on the intermediate disassembly table. There is no need to set up an additional removal mechanism to remove the defective cells from the intermediate disassembly table, which reduces the complexity and cost of the equipment.

[0018] In some embodiments, the welding platform includes a second mounting base, an intermediate welding stage, a first side welding stage, a second side welding stage, a fourth drive unit, and a fifth drive unit, wherein: the first side welding stage, the intermediate welding stage, and the second side welding stage are sequentially mounted on the second mounting base; the intermediate welding stage is configured to carry and adsorb replacement solar cells; the first side welding stage is configured to carry solar cells located on a first side of defective solar cells and to at least adsorb adjacent solar cells on the first side; the fourth drive unit is disposed on the second mounting base and is drively connected to the first side welding stage, and the fourth drive unit is configured to drive the first side welding stage toward or away from the intermediate welding stage. The first welding platform moves to achieve docking and separation with the intermediate welding platform, and drives the first welding platform to rise and fall to achieve alignment and misalignment with the intermediate welding platform in the height direction; the second welding platform is configured to carry the battery cell located on the second side of the defective battery cell and at least be able to adsorb the adjacent battery cell on the second side; the fifth drive unit is disposed on the second mounting base and is connected to the second welding platform in a transmission manner; the fifth drive unit is configured to drive the second welding platform to move toward or away from the intermediate welding platform to achieve docking and separation with the intermediate welding platform, and drive the second welding platform to rise and fall to achieve alignment and misalignment with the intermediate welding platform in the height direction.

[0019] By setting the welding platform to include an intermediate welding platform, as well as a first side welding platform and a second side welding platform that can move and rise relative to the intermediate welding platform, the welding platform can work with the welding strip clamping device and the welding device to weld the replacement battery cell to the defective position of the battery string to be repaired, thus realizing the welding of the replacement battery cell into the string.

[0020] In some embodiments, the disassembly platform and the welding platform both extend along a first direction and are arranged side by side along a second direction, the first direction being perpendicular to the second direction; or, the disassembly platform and the welding platform both extend along a first direction and are arranged side by side along the first direction; or, the disassembly platform and the welding platform both extend along a first direction and are arranged vertically at intervals.

[0021] Three arrangement methods for the disassembly and welding platforms are provided. One method involves arranging the disassembly and welding platforms side-by-side along the second direction, which shortens the equipment length and the travel distance of the second transport device. Another method involves arranging the disassembly and welding platforms vertically at intervals to further reduce the equipment's footprint.

[0022] In some embodiments, the battery string repair equipment further includes a first visual inspection device disposed above the disassembly platform. The first visual inspection device is configured to locate defective battery cells in the battery string to be repaired on the disassembly platform to obtain the location information of the defective battery cells. The solder strip cutting device is configured to cut the solder strip between the defective battery cell and the first adjacent battery cell based on the location information of the defective battery cell, and / or cut the solder strip between the defective battery cell and the second adjacent battery cell.

[0023] By setting up a first vision device, the defective battery cells in the battery string to be repaired are located, so that the solder strip cutting device can accurately cut the solder strip between the defective battery cell and the first adjacent battery cell, and / or cut the solder strip between the defective battery cell and the second adjacent battery cell, according to the location information of the defective battery cell.

[0024] In some embodiments, the battery string repair equipment further includes a second vision inspection device disposed above the welding platform. The second vision inspection device is configured to locate the first adjacent battery cell and the second adjacent battery cell on the welding platform to obtain location information of the defect location. The second transport device is configured to place the replacement battery cell onto the welding platform based on the location information of the defect location.

[0025] By setting up a second vision device, the first and second adjacent battery cells on the welding platform are located to obtain the location information of the defect. This allows the second transport device to accurately place the replacement battery cell onto the welding platform based on the location information of the defect.

[0026] In some embodiments, the welding strip cutting device includes a first moving mechanism, a cutter holder, a first fixed cutter, a first movable cutter, and a first cutter drive unit, wherein: the first cutter drive unit is disposed on the cutter holder, the cutter holder is connected to a movable part of the first moving mechanism, and the first moving mechanism is configured to drive the cutter holder to translate and move up and down; the first fixed cutter is fixedly connected to the cutter holder, and a plurality of first hook-shaped cutters are arranged side by side at intervals on the lower edge of the first fixed cutter, and a first support slope for supporting the welding strip is formed on the hook-shaped part of the first hook-shaped cutter, and a first cutting edge is formed at the upper end of the first support slope; the first movable cutter slides... The first movable cutter is movably connected to the cutter holder and fits against the first fixed cutter. A second cutting edge is formed at the lower edge of the first movable cutter. The driving end of the first cutter driving unit is connected to the first movable cutter. The first cutter driving unit is configured to drive the first movable cutter to slide relative to the first fixed cutter, so as to realize the position switching of the first movable cutter between a first clearance position and a cutting position. When the first movable cutter slides to the first clearance position, a gap is formed between each first support slope and the second cutting edge for the welding strip to pass through. When the first movable cutter slides to the cutting position, the second cutting edge cooperates with each first cutting edge to cut the welding strip passing through the gap.

[0027] By extending the first hook-shaped blade under the welding strip and using the first supporting inclined surface of the first hook-shaped blade to support the welding strip in an inclined state, the first fixed cutter cuts the welding strip along the thickness direction of the welding strip. Under the premise of successfully cutting the welding strip, it can be ensured that the welding strip still maintains its original state, does not twist, and the cut surface is flat and burr-free.

[0028] In some embodiments, the welding strip clamping device includes a second moving mechanism, a first mounting frame, a first moving frame, and a second moving frame, wherein: the first mounting frame is connected to the drive end of the second moving mechanism, and the second moving mechanism is configured to drive the first mounting frame to translate and move up and down; the first moving frame and the second moving frame are disposed opposite to each other on the first mounting frame, and the first moving frame and the second moving frame are configured to move relative to each other; a plurality of first clamps are provided on the first moving frame, and the first clamps are connected to the first moving frame vertically via a first floating connector and extend downward from the first moving frame; a plurality of second clamps are provided on the second moving frame, each corresponding to one of the first clamps, and the second clamps are connected to the second moving frame vertically via a second floating connector and extend downward from the second moving frame; each first clamp and its corresponding second clamp constitute a welding strip clamping assembly; the welding strip clamping assembly is provided with welding clearance holes, and a welding device is used to weld the clamped welding strips through the welding clearance holes.

[0029] By setting a number of first clamps and a number of second clamps on the first moving frame and the second moving frame in a one-to-one correspondence, it is only necessary to control the relative movement of the first moving frame and the second moving frame to drive the number of first clamps and the number of second clamps to synchronously clamp the welding strip on the replacement battery cell and the welding strip to be overlapped on the adjacent battery cell, thereby reducing the structural complexity of the welding strip clamping device.

[0030] Furthermore, since the first and second clamps of each welding strip clamping assembly can be connected to the first and second movable frames via the first and second floating connectors respectively, this configuration allows the first and second clamps of each welding strip clamping assembly to adaptively float up and down after being subjected to force at the bottom (i.e., after contacting the battery cell or welding strip) during the descent of the first mounting frame driven by the second moving mechanism. This ultimately achieves the same height for all the first and second clamps, and then the relative movement of the first and second movable frames enables the first and second clamps to cooperate in clamping the welding strip.

[0031] In some embodiments, the battery string repair equipment of this application further includes a replacement battery cell feeding device, which includes at least one of a first buffer platform, a second buffer platform, and a third buffer platform. The first buffer platform is used to carry the head replacement battery cell, the second buffer platform is used to carry the middle replacement battery cell, and the third buffer platform is used to carry the tail replacement battery cell. A third conveying device picks up the head replacement battery cell, the middle replacement battery cell, or the tail replacement battery cell from the replacement battery cell feeding device and conveys it to the welding platform.

[0032] By setting up a replacement cell feeding device, replacement cells can be fed to the head, middle, or tail sections, ensuring that the third conveying device can obtain the required type of replacement cell in a timely manner.

[0033] In some embodiments, the battery string repair equipment further includes an infeed inspection device configured to detect the defect type and location of the battery strings to be repaired. The infeed inspection device includes a feeding section, a first gripper, a straightening table, a first string inspection section, a second gripper, a feeding EL inspection section, a second string inspection section, a transfer table, and an outlet box. The feeding section is configured to supply the battery strings to be repaired. The first gripper is configured to transport the battery strings supplied by the feeding section to the straightening table, which is configured to straighten the position of the battery strings to be repaired. The first string inspection section is located above the straightening table and is configured to inspect the battery strings to be repaired. The first gripper is configured to inspect the appearance defects on the upper surface of the battery string; the second gripper is configured to transport the battery string to be repaired from the sorting table to above the loading EL inspection unit and the second string inspection unit, wherein the loading EL inspection unit is configured to perform EL inspection on the battery string to be repaired, and the second string inspection unit is configured to inspect the appearance defects on the lower surface of the battery string to be repaired; the second gripper is also configured to place the battery string to be repaired that is determined to be repairable after inspection on the transfer table, and to place the battery string to be repairable that is determined to be non-repairable after inspection into the discharge box; the first conveying device is configured to pick up the battery string to be repairable that is determined to be repairable from the transfer table.

[0034] By installing an infeed inspection device, the device detects faulty solder joints, internal defects, and external defects in battery strings, thereby determining whether a battery string is to be repaired or cannot be repaired, and identifying the location of defective cells in the battery string to be repaired. Furthermore, the infeed inspection device can place the identified battery strings to be repaired onto a transfer platform and place the battery strings that cannot be repaired into the discharge box.

[0035] In some embodiments, the battery string repair equipment of this application further includes an output EL detection device, an output conveyor line, and an NG string buffer platform, wherein: the output EL detection device, the output conveyor line, and the NG string buffer platform are all disposed on the side of the welding platform; the second conveying device is further configured to pick up the repaired battery strings from the welding platform; the output EL detection device is configured to perform EL detection on the repaired battery strings on the second conveying device to determine the type of repaired battery strings, the types of repaired battery strings including repairable battery strings and repair unqualified battery strings; the second conveying device is further configured to convey the repairable battery strings to the output conveyor line and convey the repair unqualified battery strings to the NG string buffer platform.

[0036] By setting up an EL detection device for discharge, a discharge conveyor line, and an NG string buffer station, the system can detect the reworked battery strings to determine their type, thereby enabling the classification and collection of reworked battery strings that are qualified or unqualified. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the battery string repair equipment in the embodiments of this application;

[0038] Figure 2 This is a schematic diagram of the disassembly platform in the embodiments of this application;

[0039] Figure 3 This is a top view of the welding platform in an embodiment of this application.

[0040] Figure 4 This is a side view of the welding platform in an embodiment of this application.

[0041] Figure 5 This is a schematic diagram of the welding strip cutting device in the embodiments of this application;

[0042] Figure 6 This is a schematic diagram of the structure of the first hook-shaped blade in the embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the welding strip clamping device in the embodiments of this application;

[0044] Figure 8 This is a schematic diagram of the structure of the first and second clamps in the embodiments of this application;

[0045] Figure 9 This is a schematic diagram of battery string repair.

[0046] Figures 1 to 9 Includes:

[0047] First conveying device 1;

[0048] Second transport device 2;

[0049] Disassembly platform 3: First mounting base 31, middle disassembly platform 32, first side disassembly platform 33, second side disassembly platform 34, first drive unit 35, second drive unit 36, third drive unit 37, air blowing unit 38;

[0050] Welding strip cutting device 4: first moving mechanism 41, cutter seat 42, first fixed cutter 43, first movable cutter 44, first cutter drive unit 45, first hook-shaped cutter 46, first supporting inclined surface 461, first cutting edge 462, second cutting edge 441;

[0051] Welding platform 5: second mounting base 51, intermediate welding table 52, first side welding table 53, second side welding table 54, fourth drive unit 55, fifth drive unit 56;

[0052] Third transport device 6;

[0053] Welding strip clamping device 7: first mounting frame 71, first moving frame 72, second moving frame 73, first clamp 74, second clamp 75, first floating connector 76, sixth drive unit 77, seventh drive unit 78, first clearance hole 741, first bottom surface 743, second bottom surface 744, side elevation 745, second clearance hole 751;

[0054] Welding device 8;

[0055] First visual inspection device 9;

[0056] Second visual detection device 10;

[0057] Replace the cell feeding device 110, the first buffer stage 111, the second buffer stage 112, and the third buffer stage 113;

[0058] Replacement of the cell feeding device 120: Supply section 121, conveying section 122, EL inspection section 123, and welding strip cutting section 124;

[0059] Feed detection device 130: feeding section 131, first gripper 132, grading table 133, transfer table 134;

[0060] NG string buffer station 140;

[0061] 150 feeding conveyor device;

[0062] Storage device 160;

[0063] 300 defective cells, 400 adjacent cells, 500 weld strips. Detailed Implementation

[0064] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0065] As described in the background section, in existing battery string repair equipment, after the battery string to be repaired is placed on the repair platform, the cutting and removal of defective battery cells and the welding of replacement battery cells are both carried out on the repair platform. In other words, the welding of replacement battery cells can only be carried out after the defective battery cells have been cut and removed, thus resulting in low repair efficiency for existing battery strings.

[0066] To address the aforementioned problems with existing battery string repair equipment, this application provides a battery string repair equipment for performing repairs on battery strings to be repaired, which involves removing defective battery cells from the battery strings to be repaired and replacing them with new, qualified battery cells (referred to as replacement battery cells in this application).

[0067] A battery string awaiting repair consists of multiple battery cells connected together by solder strips, and includes at least one defective battery cell. The location of the defective battery cell in the battery string awaiting repair falls into three categories:

[0068] Scenario 1: Located at the first end (or head) of the battery string awaiting repair. In this case, there is no battery cell on the first side of the defective cell, and the defective cell is connected to the adjacent cell on the second side (i.e., the adjacent cell on the second side of the defective cell) via a solder strip. After the defective cell at this location is removed from the battery string awaiting repair, it needs to be replaced with the head cell.

[0069] Scenario 2: Located at the second end (or tail) of the battery string awaiting repair. In this case, there is no battery cell on the second side of the defective cell; the defective cell is connected to the adjacent cell on the first side (i.e., the cell adjacent to the first side of the defective cell) via a solder strip. After the defective cell at this location is removed from the battery string awaiting repair, it needs to be replaced with a tail-side replacement cell.

[0070] Scenario 3: Located in the middle of a battery string awaiting repair (i.e., not at the beginning or end of the string). In this case, there are batteries on both sides of the defective battery cell. The defective battery cell is connected to the adjacent battery cell on the first side via one set of solder ribbons, and to the adjacent battery cell on the second side via another set of solder ribbons. After the defective battery cell at this location is removed from the battery string awaiting repair, it needs to be replaced with a replacement battery cell from the middle.

[0071] like Figure 1 As shown, the battery string repair equipment provided in this application includes a first handling device 1, a second handling device 2, a disassembly platform 3, a solder strip cutting device 4, a welding platform 5, a third handling device 6, a solder strip clamping device 7, and a welding device 8, wherein:

[0072] The first transport device 1 is located above or on the side of the dismantling platform 3 and is configured to transport the battery string to be repaired onto the dismantling platform 3.

[0073] The welding strip cutting device 4 is located above or on the side of the disassembly platform 3. The disassembly platform 3 is configured to cooperate with the welding strip cutting device 4 to cut the welding strip between the defective battery cell in the battery string to be repaired and the adjacent battery cell on the first side, and / or to cut the welding strip between the defective battery cell in the battery string to be repaired and the adjacent battery cell on the second side.

[0074] The second transport device 2 is located above or on the side of the disassembly platform 3 and the welding platform 5, and is configured to remove the battery string to be repaired from the disassembly platform 3 and transport it to the welding platform 5 after the defective battery cells have been removed.

[0075] The third transport device 6 is located above or on the side of the welding platform 5 and is configured to transport the replacement battery cell to the defective position in the battery string to be repaired after the defective battery cell has been removed from the welding platform 5. The defective position is the position vacated after the defective battery cell has been removed. The replacement battery cell is welded with a first side weld strip and a second side weld strip.

[0076] Both the welding strip clamping device 7 and the welding device 8 are disposed above or on the side of the welding platform 5. The welding strip clamping device 7 is configured to clamp the first side welding strip of the replacement cell located at the defect location together with the welding strip to be overlapped on the first side adjacent cell, and / or clamp the second side welding strip of the replacement cell located at the defect location together with the welding strip to be overlapped on the second side adjacent cell.

[0077] The welding device 8 is configured to weld the first side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the first side adjacent battery cell, and / or weld the second side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the second side adjacent battery cell.

[0078] Taking the defective battery cell located in the middle of the battery string to be repaired as an example, the optional repair process of the battery string repair equipment of this application is as follows:

[0079] First, the first transport device 1 transports the battery string to be repaired to the disassembly platform 3.

[0080] Next, the welding strip cutting device 4, in cooperation with the disassembly platform 3, cuts the welding strip between the defective battery cell and the adjacent battery cell on the first side and the adjacent battery cell on the second side.

[0081] Next, the second transport device 2 moves the battery string to be repaired, after removing the defective cells, from the disassembly platform 3 to the welding platform 5. At the same time, the first transport device 1 can move the next battery string to be repaired onto the disassembly platform 3.

[0082] Next, the third transport device 6 transports the replacement battery cell to the defective location in the battery string to be repaired on the welding platform 5. The welding strip clamping device 7 clamps the first side welding strip of the replacement battery cell together with the welding strip to be overlapped on the first side adjacent battery cell, and clamps the second side welding strip of the replacement battery cell together with the welding strip to be overlapped on the second side adjacent battery cell.

[0083] Finally, the welding device 8 welds the first side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the first side adjacent battery cell, and welds the second side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the second side adjacent battery cell.

[0084] As can be seen, the battery string repair equipment provided in this application is equipped with a disassembly platform 3 and a welding platform 5. Defective battery cells are cut off and removed on the disassembly platform 3, while replacement battery cells are welded into the string on the welding platform 5. Thus, while the solder ribbon cutting device 4 and the disassembly platform 3 are cutting off and removing defective battery cells from one battery string to be repaired, the solder ribbon clamping device 7, the welding device 8, and the welding platform 5 can weld replacement battery cells into another battery string to be repaired. This allows for simultaneous cutting off and removing of defective battery cells and welding of replacement battery cells into the string, improving the efficiency of battery string repair.

[0085] The first transport device 1 and the second transport device 2 can employ various existing battery string transport devices. For example, the battery string transport device includes a drive mechanism, a suction cup mounting plate, and several suction cup assemblies. The suction cup mounting plate is connected to the drive end of the drive mechanism, and the several suction cup assemblies are spaced apart on the suction cup mounting plate along its length. The drive mechanism drives the suction cup mounting plate to translate and lift, thereby causing the several suction cup assemblies to cooperate in adsorbing the battery string to be repaired and transporting it. The drive mechanism can be, for example, a robotic arm, which can also drive the suction cup mounting plate to rotate, thereby ensuring that the suction cup mounting plate is parallel to the battery string before adsorption.

[0086] The third transport device 6 can adopt various existing battery cell transport devices. For example, the battery cell transport device includes a drive mechanism and a suction cup assembly connected to the drive end of the drive mechanism. The drive mechanism drives the suction cup assembly to translate and lift, so that the suction cup assembly can pick up and transport the replacement battery cell.

[0087] The welding device 8 can adopt various existing welding mechanisms, such as infrared light boxes, laser welding heads, hot air welding mechanisms, electromagnetic welding heads, etc.

[0088] like Figure 2 As shown, optionally, the disassembly platform 3 includes a first mounting base 31, an intermediate disassembly platform 32, a first side disassembly platform 33, a second side disassembly platform 34, a first drive unit 35, and a second drive unit 36, wherein the first side disassembly platform 33, the intermediate disassembly platform 32, and the second side disassembly platform 34 are sequentially mounted on the first mounting base 31.

[0089] The intermediate disassembly stage 32 is configured to carry and absorb defective cells from the battery string to be repaired.

[0090] The first side disassembly platform 33 is configured to carry the battery cell located on the first side of the defective battery cell and to at least be able to adsorb the adjacent battery cell on the first side. The first drive unit 35 is disposed on the first mounting base 31 and is connected to the first side disassembly platform 33 in a transmission manner. The first drive unit 35 is configured to drive the first side disassembly platform 33 to move toward or away from the intermediate disassembly platform 32 to achieve docking and separation with the intermediate disassembly platform 32, and to drive the first side disassembly platform 33 to rise and fall to achieve alignment and misalignment with the intermediate disassembly platform 32 in the height direction.

[0091] The second side disassembly platform 34 is configured to carry the battery cell located on the second side of the defective battery cell and to at least be able to adsorb the adjacent battery cell on the second side. The second drive unit 36 ​​is disposed on the first mounting base 31 and is connected to the second side disassembly platform 34 in a transmission manner. The second drive unit 36 ​​is configured to drive the second side disassembly platform 34 to move toward or away from the intermediate disassembly platform 32 to achieve docking and separation with the intermediate disassembly platform 32, and to drive the second side disassembly platform 34 to rise and fall to achieve alignment and misalignment with the intermediate disassembly platform 32 in the height direction.

[0092] Taking the defective battery cell located in the middle of the battery string awaiting repair as an example, the optional process for removing the defective battery cell using the disassembly platform 3 and the welding strip cutting device 4 is as follows:

[0093] In the initial state, the middle disassembly platform 32, the first side disassembly platform 33, and the second side disassembly platform 34 are at the same height, and the first side disassembly platform 33 and the second side disassembly platform 34 are connected to the middle disassembly platform 32.

[0094] First, the battery string to be repaired is placed on the disassembly platform 3, wherein: the defective battery cell is located on the intermediate disassembly platform 32 and is attracted by the intermediate disassembly platform 32. The battery cell on the first side of the defective battery cell is located on the first side disassembly platform 33, and the adjacent battery cell on the first side is attracted by the first side disassembly platform 33. The battery cell on the second side of the defective battery cell is located on the second side disassembly platform 34, and the adjacent battery cell on the second side is attracted by the second side disassembly platform 34.

[0095] Subsequently, the first drive unit 35 drives the first side disassembly stage 33 to rise or fall, causing the first side disassembly stage 33 and the middle disassembly stage 32 to be misaligned in the height direction. The second drive unit 36 ​​drives the second side disassembly stage 34 to rise or fall, causing the second side disassembly stage 34 and the middle disassembly stage 32 to be misaligned in the height direction. In this way, the solder strip cutting device 4 can easily cut the solder strip that is tilted between the defective battery cell and the adjacent battery cell on the first side and the adjacent battery cell on the second side.

[0096] After the welding strip is cut, the first drive unit 35 and the second drive unit 36 ​​drive the first side disassembly stage 33 and the second side disassembly stage 34 to move away from the middle disassembly stage 32, thereby completely separating the first side adjacent battery cell, the second side adjacent battery cell and the defective battery cell.

[0097] Subsequently, the intermediate disassembly stage 32 releases its grip on the defective battery cell, and the disassembled defective battery cell is removed from the intermediate disassembly stage 32.

[0098] Finally, the first drive unit 35 and the second drive unit 36 ​​respectively drive the first side disassembly platform 33 and the second side disassembly platform 34 to return to their initial state. The first side disassembly platform 33 and the second side disassembly platform 34 respectively release the adsorption on the first side adjacent battery cell and the second side adjacent battery cell. The second transport device 2 transports the battery string to be repaired after removing the defective battery cell from the disassembly platform 3 to the welding platform 5.

[0099] As can be seen, by setting the disassembly platform 3 to include a middle disassembly platform 32, and a first side disassembly platform 33 and a second side disassembly platform 34 that can be translated and raised relative to the middle disassembly platform 32, the disassembly platform 3 can cooperate with the welding strip cutting device 4 to cut the welding strip between the defective battery cell and the first side adjacent battery cell and the second side adjacent battery cell, and separate the disassembled defective battery cell from the first side adjacent battery cell and the second side adjacent battery cell, so as to facilitate the removal of the defective battery cell from the battery string.

[0100] Both the first drive unit 35 and the second drive unit 36 ​​can employ various existing drive devices capable of driving the first side disassembly platform 33 and the second side disassembly platform 34 to move up and down and translate. Taking the first drive unit 35 as an example, it may include a translation drive, a sliding bracket, and a lifting drive. The sliding bracket is horizontally slidably connected to the first mounting base 31 and is drive-connected to the translation drive provided on the first mounting base 31. The first side disassembly platform 33 is vertically and slidably connected to the sliding bracket and is drive-connected to the lifting drive provided on the sliding bracket. The translation drive is used to drive the sliding bracket to slide horizontally along the length direction of the disassembly platform 3, thereby causing the first side disassembly platform 33 to translate toward or away from the intermediate disassembly platform 32. The lifting drive is used to drive the intermediate disassembly platform 32 to move up and down.

[0101] like Figure 2 As shown, optionally, the disassembly platform 3 also includes a third drive unit 37, and the intermediate disassembly platform 32 is rotatably mounted on the first mounting base 31 via a horizontal pivot. The third drive unit 37 is disposed on the first mounting base 31 and is connected to the intermediate disassembly platform 32 in a transmission manner. The third drive unit 37 is configured to drive the intermediate disassembly platform 32 to rotate around the horizontal pivot, so as to switch between a horizontal state and an inclined state.

[0102] After the solder strip cutting device 4 completes the cutting of the solder strip, the third drive unit 37 then drives the intermediate disassembly table 32 to tilt, thereby automatically discarding the defective solar cells on the intermediate disassembly table 32. This eliminates the need for an additional removal mechanism to remove the defective solar cells from the intermediate disassembly table 32, reducing equipment complexity and cost.

[0103] The third drive unit 37 can employ any existing drive device capable of driving the intermediate disassembly table 32 to rotate around a horizontal axis. For example, the third drive unit 37 includes a motor, a drive gear, and a driven gear. The motor is mounted on the first mounting base 31, the drive gear is mounted on the motor's drive shaft, and the driven gear is mounted on the intermediate disassembly table 32 and meshes with the drive gear. The motor drives the drive gear to rotate, and the drive gear, in turn, drives the intermediate disassembly table 32 to rotate around the horizontal axis via the driven gear.

[0104] Optionally, the disassembly platform 3 also includes an air blowing section 38 disposed on the side of the intermediate disassembly platform 32. After the defective battery cell is removed from the intermediate disassembly platform 32, the air blowing section 38 blows away the battery cell debris on the intermediate disassembly platform 32.

[0105] like Figures 3 to 4 As shown, optionally, the welding platform 5 includes a second mounting base 51, an intermediate welding table 52, a first side welding table 53, a second side welding table 54, a fourth drive unit, and a fifth drive unit 56, wherein:

[0106] The first side welding station 53, the middle welding station 52, and the second side welding station 54 are sequentially installed on the second mounting base 51.

[0107] The intermediate welding station 52 is configured to support and absorb replacement battery cells.

[0108] The first side welding station 53 is configured to carry the battery cell located on the first side of the defective battery cell and to at least adsorb the adjacent battery cell on the first side. The fourth drive unit is disposed on the second mounting base 51 and is connected to the first side welding station 53 in a transmission manner. The fourth drive unit is configured to drive the first side welding station 53 to move toward or away from the intermediate welding station 52 to achieve docking and separation with the intermediate welding station 52, and to drive the first side welding station 53 to rise and fall to achieve alignment and misalignment with the intermediate welding station 52 in the height direction.

[0109] The second side welding station 54 is configured to carry the battery cell located on the second side of the defective battery cell and to at least adsorb the adjacent battery cell on the second side. The fifth drive unit 56 is disposed on the second mounting base 51 and is connected to the second side welding station 54 in a transmission manner. The fifth drive unit 56 is configured to drive the second side welding station 54 to move toward or away from the intermediate welding station 52 to achieve docking and separation with the intermediate welding station 52, and to drive the second side welding station 54 to rise and fall to achieve alignment and misalignment with the intermediate welding station 52 in the height direction.

[0110] Taking the defective battery cell located in the middle of the battery string to be repaired as an example, the optional process of welding the replacement battery cell into the string by the welding platform 5 in conjunction with the welding strip clamping device 7 and the welding device 8 is as follows:

[0111] In the initial state, the first side welding station 53 and the second side welding station 54 are both connected to the middle welding station 52 and aligned with the middle welding station 52 in height.

[0112] The second transport device 2 transports the battery string to be repaired after removing the defective battery cells to the welding platform 5. The battery cells located on the first side of the defective battery cells are all located on the first-side welding station 53, and adjacent battery cells on the first side are held in place by the first-side welding station 53. The battery cells located on the second side of the defective battery cells are all located on the second-side welding station 54, and adjacent battery cells on the second side are held in place by the second-side welding station 54.

[0113] Next, the first side welding station 53 and the second side welding station 54 move away from the middle welding station 52 to make room for the replacement battery cell. Then, the third conveying device 6 conveys the replacement battery cell to the middle welding station 52, and the middle welding station 52 holds the replacement battery cell.

[0114] Next, the fourth drive unit and the fifth drive unit 56 drive the first side welding station 53 and the second side welding station 54 to move and rise and fall toward the welding station 52, respectively, so that the first side welding strip and the second side welding strip of the replacement battery cell approach each other with the welding strip to be overlapped on the first side adjacent battery cell and the second side adjacent battery cell.

[0115] Next, the welding strip clamping device 7 clamps the first side welding strip of the replacement battery cell together with the welding strip to be overlapped on the first side adjacent battery cell, and clamps the second side welding strip of the replacement battery cell together with the welding strip to be overlapped on the second side adjacent battery cell.

[0116] Next, the welding device 8 welds the first side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the first side adjacent battery cell, and welds the second side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the second side adjacent battery cell.

[0117] After the battery string that has been repaired is removed from the welding platform 5, the fourth drive unit and the fifth drive unit 56 respectively drive the first side welding station 53 and the second side welding station 54 to reset to their initial state.

[0118] As can be seen, by setting the welding platform 5 to include an intermediate welding platform 52, and a first side welding platform 53 and a second side welding platform 54 that can be translated and raised relative to the intermediate welding platform 52, the welding platform 5 can cooperate with the welding strip clamping device 7 and the welding device 8 to weld the replacement battery cell to the defective position of the battery string to be repaired, thereby realizing the welding of the replacement battery cell into the string.

[0119] Both the fourth drive unit and the fifth drive unit 56 can adopt various existing drive devices capable of driving the first side welding table 53 and the second side welding table 54 to rise, fall, and translate. For example, they can adopt the same structure as the first drive unit 35 in the previous embodiment.

[0120] like Figure 1 In the illustrated embodiment, both the disassembly platform 3 and the welding platform 5 extend along a first direction (e.g., the X direction) and are arranged side-by-side along a second direction (e.g., the Y direction), with the first direction perpendicular to the second direction. This arrangement shortens the length of the equipment in the first direction and reduces the travel distance of the second conveying device. Of course, in other embodiments, the disassembly platform 3 and the welding platform 5 may also both extend along the first direction and be arranged side-by-side along that direction. Furthermore, to further reduce the equipment's footprint, the disassembly platform 3 and the welding platform 5 may both extend along the first direction and be arranged vertically at intervals.

[0121] like Figure 1 As shown, optionally, the battery string repair equipment in this embodiment further includes a first visual inspection device 9 disposed above the disassembly platform 3. The first visual inspection device 9 is configured to locate defective battery cells in the battery string to be repaired located on the disassembly platform 3 to obtain the location information of the defective battery cells. The solder strip cutting device 4 cuts the solder strip between the defective battery cell and the first adjacent battery cell based on the location information of the defective battery cell, and / or cuts the solder strip between the defective battery cell and the second adjacent battery cell.

[0122] As can be seen, by setting up the first vision device, this application achieves precise positioning of defective battery cells in the battery string to be repaired, thereby enabling the solder strip cutting device 4 to accurately cut the solder strip between the defective battery cell and the first adjacent battery cell, and / or cut the solder strip between the defective battery cell and the second adjacent battery cell according to the position information of the defective battery cell.

[0123] Optionally, the battery string repair equipment in this embodiment further includes a second visual inspection device 10 disposed above the welding platform 5. The second visual inspection device 10 is configured to locate the first adjacent battery cell and the second adjacent battery cell on the welding platform 5, thereby obtaining the location information of the defect location. The second handling device 2 is configured to place the replacement battery cell onto the welding platform 5 based on the location information of the defect location.

[0124] As can be seen, by setting up the second vision device 10, this application achieves precise positioning of the first and second adjacent battery cells located on the welding platform 5, thereby obtaining the location information of the defect position between the first and second adjacent battery cells. Ultimately, this enables the second transport device 2 to accurately place the replacement battery cell onto the welding platform 5 based on the location information of the defect position.

[0125] Both the first vision inspection device 9 and the second vision device 10 can use existing visible light imaging cameras of various models, which can be used to capture and locate defective battery cells, or battery cells adjacent to the first and second sides.

[0126] like Figures 5 to 6 As shown, optionally, the welding strip cutting device 4 includes a first moving mechanism 41, a cutter holder 42, a first fixed cutter 43, a first movable cutter 44, and a first cutter drive unit 45, wherein:

[0127] The first cutting drive unit 45 is disposed on the cutting blade holder 42, which is connected to the movable part of the first moving mechanism 41. The first moving mechanism 41 is configured to drive the cutting blade holder 42 to translate and move up and down.

[0128] The first fixed cutter 43 is fixedly connected to the cutter holder 42. Several first hook-shaped cutters 46 are arranged side by side at intervals on the lower edge of the first fixed cutter 43. A first support slope 461 for supporting the welding strip is formed on the hook-shaped part of the first hook-shaped cutter 46. A first blade 462 is formed at the upper end of the first support slope 461.

[0129] The first movable cutter 44 is slidably connected to the cutter seat 42 and fits against the first fixed cutter 43. A second blade 441 is formed at the lower edge of the first movable cutter 44.

[0130] The drive end of the first cutter drive unit 45 is connected to the first movable cutter 44. The first cutter drive unit 45 is configured to drive the first movable cutter 44 to slide relative to the first fixed cutter 43, so as to realize the position switching of the first movable cutter 44 between the first avoidance position and the cutting position.

[0131] When the first movable cutter 44 slides to the first clearance position, a gap is formed between each of the first support inclined surfaces 461 and the second cutting edge 441 for the welding strip to pass through; when the first movable cutter 44 slides to the cutting position, the second cutting edge 441 and each of the first cutting edges 462 cooperate to cut the welding strip passing through the gap between them.

[0132] Taking the cutting of the solder strip between the defective battery cell and the adjacent battery cell on the first side as an example, the optional working process of the solder strip cutting device 4 in this embodiment is as follows:

[0133] In the initial state, the cutter holder 42 and its components are positioned away from the solder strip group between the defective solar cell and the adjacent solar cell on the first side. For example... Figure 5 As shown, when the first movable cutter 44 is in the avoidance position, a gap is formed between the first supporting inclined surface 461 of each first hook-shaped cutter 46 and the second cutting edge 441 of the first movable cutter 44 for the welding strip to pass through.

[0134] The first moving mechanism 41 drives the cutter holder 42 to move, so that each first hook-shaped blade 46 moves to the area above the region between two adjacent welding strips in the welding strip group. The first cutting edge 462 of the first hook-shaped blade 46 is located directly above the position to be cut of the welding strip. Then the first moving mechanism 41 drives the cutter holder 42 to descend, so that each first hook-shaped blade 46 passes downward through the two adjacent welding strips.

[0135] Next, the first moving mechanism 41 drives the cutter holder 42 to translate, so that each first hook-shaped blade 46 moves to the underside of the corresponding welding strip, so that the welding strip is supported on the first support inclined surface 461 of the first hook-shaped blade 46, and the position of the welding strip to be cut rests on the first blade 462.

[0136] Finally, the first cutter drive unit 45 drives the first movable cutter 44 to tilt downward and slide to the cutting position. The second cutting edge 441 of the first movable cutter 44 cooperates with the first cutting edge 462 of each first hook-shaped cutter 46 to cut the welding strip passing between them.

[0137] As can be seen, by extending the first hook-shaped blade 46 under the welding strip and using the first supporting inclined surface 461 of the first hook-shaped blade 46 to support the welding strip in an inclined state, and then the first fixed cutter 43 cuts the welding strip along the thickness direction of the welding strip, it is possible to ensure that the welding strip remains in its original state, does not twist, and the cut surface is flat and burr-free, while ensuring that the welding strip is cut smoothly.

[0138] The first moving mechanism 41 can be any existing drive device capable of moving the cutter holder 42, such as a robot arm. Alternatively, the first moving mechanism 41 can consist of a translation drive module and a lifting drive module, wherein the translation drive module drives the cutter holder 42 to translate, and the lifting drive module drives the cutter holder 42 to lift.

[0139] like Figure 7 As shown, optionally, the welding strip clamping device 7 in this embodiment includes a second moving mechanism (not shown in the figure), a first mounting frame 71, a first moving frame 72, and a second moving frame 73, wherein:

[0140] The first mounting bracket 71 is connected to the drive end of the second moving mechanism, which is configured to drive the first mounting bracket 71 to translate and move up and down.

[0141] The first movable frame 72 and the second movable frame 73 are disposed opposite to each other on the first mounting frame 71, and the first movable frame 72 and the second movable frame 73 are configured to move relative to each other.

[0142] The first movable frame 72 is provided with a plurality of first clamps 74. The first clamps 74 are buoyantly connected to the first movable frame 72 via a first floating connector 76 and extend downward from the first movable frame 72. The second movable frame 73 is provided with a plurality of second clamps 75 corresponding one-to-one with the first clamps 74. The second clamps 75 are buoyantly connected to the second movable frame 73 via a second floating connector (not shown in the figure) and extend downward from the second movable frame 73. Each first clamp 74 and its corresponding second clamp 75 constitute a welding strip clamping assembly. The welding strip clamping assembly is provided with welding clearance holes, through which the welding device 8 is used to weld the clamped welding strips.

[0143] Taking the clamping of the first-side solder strip on the replacement cell and the solder strip to be overlapped on the first-side adjacent cell as an example, the optional working process of the solder strip clamping device 7 in this embodiment is as follows:

[0144] In the initial state, the first mounting bracket 71 is away from the first side solder strip on the replacement cell and the solder strip to be overlapped on the first side adjacent cell, and the first clamp 74 and the second clamp 75 of each solder strip clamping assembly are separated.

[0145] Next, the second moving mechanism adjusts the position and angle of the first mounting frame 71 so that each welding strip clamping component is aligned with a welding strip to be clamped, one of which is a first-side welding strip on the replacement cell, and the other is a welding strip on the first side adjacent to the cell to be overlapped.

[0146] Next, the second moving mechanism controls the first mounting frame 71 to descend, so that each welding strip to be clamped enters between the first chuck 74 and the second chuck 75 of each welding strip clamping assembly in a one-to-one correspondence.

[0147] Subsequently, the first moving frame 72 and the second moving frame 73 are controlled to move relative to each other, so as to drive the first chuck 74 and the second chuck 75 of each welding strip clamping assembly to clamp each welding strip to be clamped synchronously.

[0148] As can be seen, by setting a number of first clamps 74 and a number of second clamps 75 in a one-to-one correspondence between the first moving frame 72 and the second moving frame 73, it is only necessary to control the relative movement of the first moving frame 72 and the second moving frame 73 to drive the number of first clamps 74 and the number of second clamps 75 to perform synchronous clamping of the welding strip on the replacement battery cell and the welding strip to be overlapped on the adjacent battery cell, thereby reducing the structural complexity of the welding strip clamping device 7.

[0149] Furthermore, since the first clamp 74 and the second clamp 75 of each welding strip clamping assembly can be connected to the first moving frame 72 and the second moving frame 73 by the first floating connector 76 and the second floating connector respectively, this arrangement enables the first clamp 74 and the second clamp 75 of each welding strip clamping assembly to adaptively float up and down after being subjected to force at the bottom (i.e. after contacting the battery cell or welding strip) during the process of the second moving mechanism driving the first mounting frame 71 to descend, thereby ultimately achieving the same height for all the first clamps 74 and the second clamp 75. Then, through the relative movement of the first moving frame 72 and the second moving frame 73, the first clamps 74 and the second clamp 75 cooperate to clamp the welding strip.

[0150] The second moving mechanism can employ any existing drive device capable of moving the first mounting frame 71, such as a robotic arm. Alternatively, the second moving mechanism can consist of a translation drive module and a lifting drive module, wherein the translation drive module drives the first mounting frame 71 to translate, and the lifting drive module drives the first mounting frame 71 to move up and down.

[0151] Both the first floating connector 76 and the second floating connector can be spring connectors that extend and retract vertically.

[0152] like Figure 8 As shown, optionally, the bottom surfaces of the clamping ends of the first chuck 74 and the second chuck 75 are both stepped surfaces. The stepped surface includes a first bottom surface 743, a second bottom surface 744 and a side surface 745, wherein the second bottom surface 744 is lower than the first bottom surface 743, and the side surface 745 is located between the first bottom surface 743 and the second bottom surface 744.

[0153] The side face 745 of the first clamp 74 and the side face 745 of the second clamp 75 are opposite to each other. The side face 745 of the first clamp 74 and the side face 745 of the second clamp 75 move closer to each other or further away from each other as the first moving frame 72 and the second moving frame 73 move relative to each other.

[0154] The clamping process of the first chuck 74 and the second chuck 75 for the two welding strips to be clamped is as follows:

[0155] When the second moving mechanism drives the first mounting frame 71 to descend, the first bottom surface 743 of the first clamp 74 and the first bottom surface 743 of the second clamp 75 press against the two welding strips to be clamped.

[0156] When the first movable frame 72 and the second movable frame 73 move relative to each other, the side face 745 of the first clamp 74 and the side face 745 of the second clamp 75 clamp the two weld strips that are pressed together, so that the two weld strips overlap horizontally or overlap vertically.

[0157] Furthermore, the clamping end of the first chuck 74 is provided with a first clearance hole 741, and the clamping end of the second chuck 75 is provided with a second clearance hole 751. The first clearance hole 741 and the second clearance hole 751 together form a welding clearance hole. The two overlapping weld strips are exposed through the welding clearance hole.

[0158] like Figure 7 As shown, optionally, the welding strip clamping device 7 in this embodiment further includes a sixth driving unit 77 and a seventh driving unit 78, wherein the sixth driving unit 77 is drivenly connected to the first movable frame 72, and the seventh driving unit 78 is drivenly connected to the second movable frame 73. The sixth driving unit 77 and the seventh driving unit 78 are configured to drive the first movable frame 72 and the second movable frame 73 to move relative to each other.

[0159] The sixth drive unit 77 and the seventh drive unit 78 can adopt various existing linear drive components, such as cylinders, electric cylinders and lead screw motors.

[0160] like Figure 1 As shown, optionally, the battery string repair equipment in this embodiment further includes a replacement battery cell feeding device 110. The replacement battery cell feeding device 110 includes at least one of a first buffer platform 111, a second buffer platform 112, and a third buffer platform 113. The first buffer platform 111 is used to carry the head replacement battery cell, the second buffer platform 112 is used to carry the middle replacement battery cell, and the third buffer platform 113 is used to carry the tail replacement battery cell. The third conveying device 6 picks up the head replacement battery cell, the middle replacement battery cell, or the tail replacement battery cell from the replacement battery cell feeding device 110 and conveys it to the welding platform 5.

[0161] Thus, the third conveying device 6 can pick up the head replacement cell, middle replacement cell, or tail replacement cell from the replacement cell feeding device 110 according to the position of the rejected defective cell in the battery string to be repaired (head, middle, or tail of the string) and transport it to the welding platform 5.

[0162] like Figure 1 As shown, optionally, the battery string repair equipment in this embodiment of the application further includes a replacement battery cell feeding device 120, which is used to feed replacement battery cells onto the replacement battery cell feeding device 110.

[0163] Optionally, the replacement cell feeding device 120 includes a supply unit 121, a conveying unit 122, and a solder strip cutting unit 123.

[0164] The supply unit 121 is used to provide an initial cell, which has a first side solder strip extending outward from a first side of the initial cell and a second side solder strip extending outward from the initial cell.

[0165] Optionally, the supply unit 121 can prepare the initial solar cells itself, that is, the supply unit 121 can weld or bond the first side solder strip and the second side solder strip to the solar cell to obtain the initial solar cell. Of course, the supply unit 121 can also be used only to store the initial solar cells pre-prepared by the initial solar cell preparation device, for example, the supply unit 121 is a material basket or a material box.

[0166] The conveying unit 122 is used to convey the initial battery cell from the supply unit 121 to the solder strip cutting unit 123. The solder strip cutting unit 123 cuts at least one of the first side solder strip and the second side solder strip on the initial battery cell to obtain a head replacement battery cell, a middle replacement battery cell, or a tail replacement battery cell. The conveying unit 122 is also used to convey the cut head replacement battery cell, middle replacement battery cell, or tail replacement battery cell to the replacement battery cell feeding device 110.

[0167] To ensure that the initial solar cell can be cut by the solder strip cutting unit 123 and prepared into a head replacement solar cell, a middle replacement solar cell, or a tail replacement solar cell, the length of the first-side solder strip and the second-side solder strip extending beyond the initial solar cell must be at least equal to the length of the longer solder strip extending beyond the replacement solar cell in any of the head, middle, or tail replacement solar cells. During the preparation process, depending on the specific type of replacement solar cell to be prepared, the solder strip cutting unit 123 may choose to cut the first-side solder strip or the second-side solder strip, or both the first-side and second-side solder strips.

[0168] Of course, in other embodiments, the replacement cell feeding device 120 may not have a solder strip cutting section 123, and the supply section 121 may directly prepare or store head replacement cells, middle replacement cells or tail replacement cells with solder strip lengths that meet the requirements.

[0169] like Figure 1 As shown, optionally, the battery string repair equipment in this embodiment of the application further includes an infeed detection device 130, which is configured to detect the defect type and defect location of the battery string to be repaired.

[0170] The feeding detection device 130 includes a feeding section 131, a first gripper 132, a grading table 133, a first string inspection section, a second gripper, a feeding EL detection section, a second string inspection section, a transfer table 134, and a discharge box, wherein:

[0171] The loading section 131 is configured to supply battery strings awaiting repair.

[0172] The first gripper 132 is configured to move the battery strings to be repaired supplied by the loading unit 131 to the straightening unit 133, which is configured to straighten the position of the battery strings to be repaired.

[0173] The first inspection section is located above the straightening table 133 and is configured to inspect the appearance defects on the upper surface of the battery string to be repaired.

[0174] The second gripper is configured to transport the battery string to be repaired from the straightening unit 133 to above the loading EL inspection unit and the second string inspection unit. The loading EL inspection unit is configured to perform EL inspection on the battery string to be repaired, and the second string inspection unit is configured to inspect for appearance defects on the lower surface of the battery string to be repaired.

[0175] The second gripper is also configured to place the battery strings that have been inspected and determined to be repairable onto the transfer station 134, and to place the battery strings that have been inspected and determined to be non-repairable into the discharge box.

[0176] The first handling device 1 is configured to pick up a battery string that can be repaired from the transfer station 134.

[0177] By configuring the incoming inspection device 130, it can detect poor soldering, internal defects, and external defects in the battery strings, thereby determining whether the battery strings are to be repaired or cannot be repaired, and identifying the location of defective cells in the battery strings to be repaired. Furthermore, the incoming inspection device 130 can place the identified battery strings to be repaired onto the transfer table 134, and place the battery strings that cannot be repaired into the discharge box.

[0178] Optionally, the first and second inspection units each include a visible light imaging camera, which takes pictures of the upper and lower surfaces of the battery string to obtain visible light images of the upper and lower surfaces of the battery string, and then performs image analysis on the visible light images of the upper and lower surfaces of the battery string to detect appearance defects on the upper and lower surfaces of the battery string.

[0179] Optionally, the loading EL inspection unit includes two opposing voltage conduction heads and an EL camera. The two opposing voltage conduction heads clamp the head and tail solder strips of the battery string from both ends to energize the battery string, while the EL camera acquires infrared images of the battery string in the energized state for EL inspection.

[0180] like Figure 1 As shown, optionally, the battery string repair equipment in this embodiment of the application further includes an output EL detection device, an output conveyor line 150 and an NG string buffer platform 140, wherein the output EL detection device, the output conveyor line 150 and the NG string buffer platform 140 are all arranged on the side of the welding platform 5.

[0181] The second handling device 2 is also configured to pick up the repaired battery strings from the welding platform 5.

[0182] The discharge EL detection device is configured to perform EL detection on the repaired battery strings on the second conveying device 2 to determine the type of repaired battery strings, which includes qualified repaired battery strings and unqualified repaired battery strings.

[0183] The second conveying device 2 is also configured to convey qualified rework battery strings to the discharge conveyor line 150 and unqualified rework battery strings to the NG string buffer station 140.

[0184] As can be seen, by setting up the discharge EL detection device, the discharge conveyor line 150 and the NG string buffer station 140, the detection of the repaired battery strings is realized to determine the type of the repaired battery strings, thereby realizing the classification and collection of repaired battery strings that are qualified and unqualified.

[0185] Similar to the structure of the loading EL inspection unit, the unloading EL inspection device also includes two opposing conductive heads and an EL camera. The two opposing conductive heads clamp the head and tail solder strips of the reworked battery string from both ends to energize it. The EL camera acquires infrared images of the reworked battery string under energized conditions to perform EL inspection, detecting any cold solder joints or internal defects, and ultimately determining the type of reworked battery string.

[0186] The two voltage probes of the discharge EL detection device can be mounted on the second conveying device 2, while the EL camera is mounted on the side of the welding platform 5. After the second conveying device 2 picks up the repaired battery string from the welding platform 5, the two voltage probes immediately energize the repaired battery string. Alternatively, the two voltage probes and the EL camera of the discharge EL detection device can both be located on the side of the welding platform 5, with the EL camera positioned above the two voltage probes. After the second conveying device 2 picks up the repaired battery string from the welding platform 5, it moves the repaired battery string between the two voltage probes, which then energize the repaired battery string.

[0187] As shown in the figure, optionally, the battery string repair equipment in this embodiment of the application also includes a storage device 160 disposed on the side of the discharge conveyor line 150. The storage device 160 is used to pick up and store qualified battery strings from the discharge conveyor line 150.

[0188] This application provides a sufficiently detailed and specific description. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within its protection scope. The scope of protection claimed in this application is defined by the claims, not by the above descriptions in the embodiments. Without contradiction, some optional components in one embodiment can also be configured in another embodiment, and some preferred structures of the same component in one embodiment can also be configured in another embodiment. Furthermore, there may be slight differences in the wording of the names of certain components in different embodiments; these slight differences will not affect the understanding of the technical solution of the present invention by those skilled in the art.

Claims

1. A battery string repair device, characterized in that, The battery string repair equipment is used for repairing battery strings that need to be returned for repair. The battery string repair equipment includes a first handling device, a second handling device, a disassembly platform, a solder strip cutting device, a welding platform, a third handling device, a solder strip clamping device, and a welding device, wherein: The battery string to be repaired includes at least one defective battery cell; The first transport device is disposed above or on the side of the disassembly platform and is configured to transport the battery string to be repaired onto the disassembly platform; The welding strip cutting device is located above or on the side of the disassembly platform. The disassembly platform is configured to cooperate with the welding strip cutting device to cut the welding strip between the defective battery cell and the adjacent battery cell on the first side in the battery string to be repaired, and / or to cut the welding strip between the defective battery cell and the adjacent battery cell on the second side in the battery string to be repaired. The second transport device is disposed above or on the side of the disassembly platform and the welding platform, and is configured to remove the battery string to be repaired after the defective battery cell has been removed from the disassembly platform and transport it to the welding platform; The third transport device is located above or on the side of the welding platform and is configured to transport the replacement battery cell to the defect location in the battery string to be repaired after the defective battery cell has been removed from the welding platform. The defect location is the position vacated after the defective battery cell has been removed. The replacement battery cell is welded with a first side weld strip and a second side weld strip. Both the welding strip clamping device and the welding device are disposed above or on the side of the welding platform. The welding strip clamping device is configured to clamp the first side welding strip of the replacement battery cell located at the defect location together with the welding strip to be overlapped on the first side adjacent battery cell, and / or clamp the second side welding strip of the replacement battery cell located at the defect location together with the welding strip to be overlapped on the second side adjacent battery cell. The welding device is configured to weld the first side weld strip of the clamped replacement battery cell to the weld strip to be overlapped on the first side adjacent battery cell, and / or weld the second side weld strip of the clamped replacement battery cell to the weld strip to be overlapped on the second side adjacent battery cell.

2. The battery string repair equipment as described in claim 1, characterized in that, The disassembly platform includes a first mounting base, a middle disassembly platform, a first side disassembly platform, a second side disassembly platform, a first drive unit, and a second drive unit, wherein: The first side disassembly platform, the middle disassembly platform, and the second side disassembly platform are sequentially installed on the first mounting base; The intermediate disassembly platform is configured to carry and absorb defective battery cells in the battery string to be repaired. The first side disassembly platform is configured to carry the battery cell located on the first side of the defective battery cell and to at least be able to adsorb the adjacent battery cell on the first side. The first driving unit is disposed on the first mounting base and is pulsatorically connected to the first side disassembly platform. The first driving unit is configured to drive the first side disassembly platform to move toward or away from the intermediate disassembly platform to achieve docking and separation with the intermediate disassembly platform, and to drive the first side disassembly platform to rise and fall to achieve alignment and misalignment with the intermediate disassembly platform in the height direction. The second side disassembly platform is configured to carry the battery cell located on the second side of the defective battery cell and to at least be able to adsorb the adjacent battery cell on the second side. The second driving unit is disposed on the first mounting base and is throttle connected to the second side disassembly platform. The second driving unit is configured to drive the second side disassembly platform to move toward or away from the intermediate disassembly platform to achieve docking and separation with the intermediate disassembly platform, and to drive the second side disassembly platform to rise and fall to achieve alignment and misalignment with the intermediate disassembly platform in the height direction.

3. The battery string repair equipment as described in claim 2, characterized in that, The disassembly platform further includes a third drive unit. The intermediate disassembly platform is rotatably mounted on the first mounting base via a horizontal rotating shaft. The third drive unit is disposed on the first mounting base and is connected to the intermediate disassembly platform in a transmission manner. The third drive unit is configured to drive the intermediate disassembly platform to rotate around the horizontal rotating shaft to switch between a horizontal state and an inclined state.

4. The battery string repair equipment as described in claim 1, characterized in that, The welding platform includes a second mounting base, a middle welding table, a first side welding table, a second side welding table, a fourth drive unit, and a fifth drive unit, wherein: The first side welding station, the intermediate welding station, and the second side welding station are sequentially mounted on the second mounting base; The intermediate welding station is configured to support and absorb the replacement battery cell; The first side welding station is configured to carry the battery cell located on the first side of the defective battery cell and to at least adsorb the adjacent battery cell on the first side. The fourth driving unit is disposed on the second mounting base and is pulsatorically connected to the first side welding station. The fourth driving unit is configured to drive the first side welding station to move toward or away from the intermediate welding station to achieve docking and separation with the intermediate welding station, and to drive the first side welding station to rise and fall to achieve alignment and misalignment with the intermediate welding station in the height direction. The second side welding station is configured to carry the battery cell located on the second side of the defective battery cell and to at least adsorb the adjacent battery cell on the second side. The fifth driving unit is disposed on the second mounting base and is throttle connected to the second side welding station. The fifth driving unit is configured to drive the second side welding station to move toward or away from the intermediate welding station to achieve docking and separation with the intermediate welding station, and to drive the second side welding station to rise and fall to achieve alignment and misalignment with the intermediate welding station in the height direction.

5. The battery string repair equipment as described in claim 1, characterized in that, Both the disassembly platform and the welding platform extend along a first direction and are arranged side-by-side along a second direction, wherein the first direction is perpendicular to the second direction; or... Both the disassembly platform and the welding platform extend along a first direction and are arranged side by side along the first direction; or... Both the disassembly platform and the welding platform extend along the first direction and are arranged vertically at intervals.

6. The battery string repair equipment as described in claim 1, characterized in that, The battery string repair equipment also includes a first visual inspection device disposed above the disassembly platform. The first visual inspection device is configured to locate defective battery cells in the battery string to be repaired located on the disassembly platform in order to obtain the location information of the defective battery cells. The solder strip cutting device is configured to cut the solder strip between the defective battery cell and a first adjacent battery cell based on the location information of the defective battery cell, and / or cut the solder strip between the defective battery cell and a second adjacent battery cell.

7. The battery string repair equipment as described in claim 1, characterized in that, The battery string repair equipment also includes a second visual inspection device disposed above the welding platform. The second visual inspection device is configured to locate the first side adjacent battery cell and the second side adjacent battery cell on the welding platform to obtain the location information of the defect location. The second transport device is configured to place the replacement battery cell onto the welding platform based on the location information of the defect location.

8. The battery string repair equipment as described in any one of claims 1 to 7, characterized in that, The welding strip cutting device includes a first moving mechanism, a cutter seat, a first fixed cutter, a first movable cutter, and a first cutter drive unit, wherein: The first cutter drive unit is disposed on the cutter holder, the cutter holder is connected to the movable part of the first moving mechanism, and the first moving mechanism is configured to drive the cutter holder to translate and move up and down. The first fixed cutter is fixedly connected to the cutter holder. Several first hook-shaped cutters are arranged side by side at intervals on the lower edge of the first fixed cutter. A first support slope for supporting the welding strip is formed on the hook-shaped part of the first hook-shaped cutter. A first cutting edge is formed at the upper end of the first support slope. The first movable cutter is slidably connected to the cutter seat and fits against the first fixed cutter, and a second cutting edge is formed at the lower edge of the first movable cutter; The drive end of the first cutter drive unit is connected to the first movable cutter. The first cutter drive unit is configured to drive the first movable cutter to slide relative to the first fixed cutter, so as to realize the position switching of the first movable cutter between the first avoidance position and the cutting position. When the first movable cutter slides to the first clearance position, a gap is formed between each of the first support slopes and the second blade for the welding strip to pass through; when the first movable cutter slides to the cutting position, the second blade cooperates with each of the first blades to cut the welding strip passing through the gap.

9. The battery string repair equipment as described in any one of claims 1 to 7, characterized in that, The welding strip clamping device includes a second moving mechanism, a first mounting frame, a first moving frame, and a second moving frame, wherein: The first mounting bracket is connected to the drive end of the second moving mechanism, which is configured to drive the first mounting bracket to translate and move up and down. The first movable frame and the second movable frame are disposed opposite to each other on the first mounting frame, and the first movable frame and the second movable frame are configured to move relative to each other; The first movable frame is provided with a plurality of first clamps, which are connected to the first movable frame in a floating manner via a first floating connector and extend downward from the first movable frame; the second movable frame is provided with a plurality of second clamps that correspond one-to-one with the first clamps, which are connected to the second movable frame in a floating manner via a second floating connector and extend downward from the second movable frame. Each first clamp and its corresponding second clamp constitute a welding strip clamping assembly. The welding strip clamping assembly is provided with welding clearance holes, and the welding device is used to weld the clamped welding strips through the welding clearance holes.

10. The battery string repair equipment as described in any one of claims 1 to 7, characterized in that, The battery string repair equipment also includes a replacement battery cell feeding device, which includes at least one of a first buffer platform, a second buffer platform, and a third buffer platform. The first buffer platform is used to carry the head replacement battery cell, the second buffer platform is used to carry the middle replacement battery cell, and the third buffer platform is used to carry the tail replacement battery cell. The third transport device picks up the head replacement battery cell, middle replacement battery cell, or tail replacement battery cell from the replacement battery cell feeding device and transports it to the welding platform.

11. The battery string repair equipment as described in any one of claims 1 to 7, characterized in that, The battery string repair equipment also includes an infeed inspection device, which is configured to detect the defect type and defect location of the battery string to be repaired. The feeding detection device includes a feeding section, a first gripper, a grading table, a first string inspection section, a second gripper, a feeding EL inspection section, a second string inspection section, a transfer table, and a discharge box, wherein: The feeding section is configured to supply battery strings awaiting repair. The first gripper is configured to transport the battery string to be repaired supplied by the feeding unit to the straightening table, and the straightening table is configured to straighten the position of the battery string to be repaired. The first string inspection unit is located above the straightening table and is configured to inspect the appearance defects on the upper surface of the battery string to be repaired; The second gripper is configured to transport the battery string to be repaired from the straightening table to above the loading EL inspection unit and the second string inspection unit, wherein the loading EL inspection unit is configured to perform EL inspection on the battery string to be repaired, and the second string inspection unit is configured to inspect for appearance defects on the lower surface of the battery string to be repaired. The second gripper is also configured to place the battery strings that are determined to be repairable after inspection onto the transfer platform, and to place the battery strings that are determined to be non-repairable after inspection into the discharge box. The first transport device is configured to pick up reworkable battery strings from the transfer platform.

12. The battery string repair equipment as described in any one of claims 1 to 7, characterized in that, The battery string repair equipment also includes an output EL detection device, an output conveyor line, and an NG string buffer station, wherein: The discharge EL detection device, the discharge conveyor line, and the NG string buffer are all located on the side of the welding platform; The second transport device is also configured to pick up the repaired battery string from the welding platform; The discharge EL detection device is configured to perform EL detection on the repaired battery string on the second conveying device to determine the type of the repaired battery string, which includes repaired qualified battery strings and repaired unqualified battery strings. The second transport device is also configured to transport qualified rework battery strings to the discharge conveyor line and unqualified rework battery strings to the NG string buffer platform.

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