Cell splitting equipment

Abstract

The present invention discloses a cell splitting device, which includes: a splitting conveying device, which is used to convey the cell to be split; a slotting device, which includes a slotting laser, which is configured to open a slot body for the cell conveyed on the splitting conveying device; a splitting device, which is arranged at the next station of the slotting device in the conveying direction of the splitting conveying device, and includes a movable splitting laser, which is configured to emit lasers along the extension direction of the slot body to the cell conveyed by the splitting conveying device; wherein the splitting device also includes a cooling device, which has a cooling nozzle that can move with the splitting laser, and the cooling nozzle can spray a coolant toward the splitting laser at the cutting position of the cell. The technical solution provided by the present invention can realize the segmentation of the cell, and can avoid the problem that the cell is easily damaged due to the excessively high temperature at the cutting position.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic cell production, and in particular relates to a cell slice splitting device. Background Art

[0002] In the production process of photovoltaic cells, there is a process of dividing a whole cell into at least two pieces and connecting the divided cell pieces to form a cell string.

[0003] At present, there are two main methods for dividing the whole battery cell. One is to first scribe the battery cell with a laser, and then mechanically break the battery cell along the scribe line with a breaking device. This method will cause the battery cell to melt in the scribe area, and it is also easy to cause damage to the battery cell during mechanical breaking.

[0004] Another method is to use continuous laser to directly cut the battery cells. However, during the cutting process, the temperature of the laser at the cutting point is often relatively high, which can easily cause damage to the battery cells.

[0005] Therefore, it is necessary to provide a cell splitting device to improve the cell splitting quality. Summary of the invention

[0006] In view of this, the present invention aims to provide a battery cell splitting device to solve the problem in the prior art that the battery cells are easily damaged during the splitting process.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] The present invention provides a battery cell splitting device, the battery cell splitting device comprising:

[0009] A chip conveying device, wherein the chip conveying device is used to convey the battery cells to be split;

[0010] A slotting device, the slotting device comprising a slotting laser, the slotting laser being configured to be able to slot the battery sheet transported to the slotting station by the splitting conveying device in the direction to be split;

[0011] A splitting device, which is arranged at the next station of the slotting device in the conveying direction of the splitting conveying device, and comprises a movable splitting laser, which is arranged to emit laser light to the battery sheet conveyed to the splitting station by the splitting conveying device along the extension direction of the slot body so that the battery sheet is split from the slot body along the direction to be split;

[0012] The splitting device further comprises a cooling device, wherein the cooling device has a cooling nozzle which can move with the splitting laser, and the cooling nozzle can spray a cooling liquid toward the splitting laser at the cutting position of the battery sheet.

[0013] Optionally, the splitting device further includes a moving frame and a driving device for driving the moving frame to move;

[0014] The split laser and the cooling nozzle are both mounted on the moving frame and move with the moving frame.

[0015] Optionally, the cell splitting device further comprises a temperature measuring device mounted on the movable frame for detecting the temperature of the cell cutting location.

[0016] Optionally, the splitting device further comprises a frame and a transverse moving module capable of moving relative to the frame, and the transverse moving module comprises a transverse moving body and the moving frame capable of moving relative to the transverse moving body;

[0017] The driving device includes a first driving mechanism capable of driving the transverse movement module to move in a transverse direction relative to the frame and a second driving mechanism capable of driving the movable frame to move in a longitudinal direction relative to the transverse movement body.

[0018] Optionally, the fragment conveying device is provided with a guide groove and a discharge pipe capable of discharging the liquid in the guide groove, and the cooling nozzle pre-sprays the coolant toward the guide groove before spraying the coolant toward the battery cell. The guide groove is located at the edge of the fragment conveying device, and the coolant sprayed by the cooling nozzle is drained to the discharge pipe.

[0019] Optionally, the cell splitting device further comprises a long strip of pressure bar, which is arranged near the position of the cell to be cut and pressed on the cell, and the length direction of the pressure bar is consistent with the extension direction of the cutting line;

[0020] Alternatively, one or two rows of adsorption holes are arranged on the split conveying device, and the arrangement direction of each row of adsorption holes is consistent with the extension direction of the cutting line. When one row of adsorption holes is set, the row of adsorption holes is set close to the position to be cut of the battery cell; when two rows of adsorption holes are set, the two rows of adsorption holes are symmetrically arranged on both sides of the position to be cut of the battery cell.

[0021] Optionally, the cell splitting device further comprises a cell conveying device and a cell loading device for conveying the cell, wherein the cell loading device transports the cell from the cell conveying device to the splitting conveying device;

[0022] The battery cell loading device includes a suction cup capable of adsorbing the battery cell, a lifting mechanism capable of driving the suction cup to rise and fall, and a rotating mechanism capable of driving the suction cup to rotate.

[0023] Optionally, the cell splitting device further comprises a first positioning detection device, the first positioning detection device is used to perform position detection and appearance detection on the cell located at the slotting station, and the slotting laser slots according to the position detected by the first positioning detection device; and / or,

[0024] The cell splitting equipment further comprises a second positioning detection device, which is used to perform position detection and appearance detection on the cell located at the splitting station, and the splitting laser emits laser according to the position detected by the second positioning detection device.

[0025] Optionally, the cell splitting device further comprises a material unloading device and a receiving device for receiving the cell, wherein the material unloading device is configured to remove the split cell from the unloading station of the cell splitting conveying device and place the cell into the receiving device;

[0026] The unloading device includes an adsorption component for adsorbing battery cells and a rotating mechanism for driving the adsorption component to rotate. The adsorption component includes at least two adsorption plates for adsorbing battery cells and a separating mechanism for driving the adsorption plates to separate from each other.

[0027] Optionally, the cell splitting device further comprises a third positioning detection device, and the third positioning detection device is used to perform position detection and appearance detection on the cell located at the unloading station;

[0028] The receiving device includes a product receiving device and a waste sheet receiving device. The product receiving device is provided with a photoelectric sensor for detecting whether the battery sheets are fully loaded. The unloading device puts the qualified battery sheets after splitting into the product receiving device and puts the waste sheets into the waste sheet receiving device according to the detection of the third positioning detection device.

[0029] In the technical solution provided by the present invention, the cell segmentation can be realized, and in the process of the splitting laser emitting laser toward the cell and cutting the cell, the cooling nozzle sprays coolant toward the cutting position of the cell, which can avoid the problem of the cell being easily damaged due to excessively high temperature at the cutting position. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute improper limitations on the present invention.

[0031] In the attached picture:

[0032] Figure 1 A top view of a cell splitting device according to one embodiment of the present invention;

[0033] Figure 2 for Figure 1 A front view of the cell splitting device shown;

[0034] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of a cell splitting device is shown;

[0035] Figure 4 It is a structural schematic diagram of a battery cell feeding device;

[0036] Figure 5 It is a structural schematic diagram of the fragment conveying device;

[0037] Figure 6 is a schematic diagram of the structure of the slotting device;

[0038] Figure 7 is a schematic diagram of the structure of the splitting device;

[0039] Figure 8 for Figure 7 A front view of the splitting device shown;

[0040] Fig. 9 It is a schematic diagram of the structure of the split laser, cooling nozzle and temperature measuring device installed on the mobile frame;

[0041] Fig.10 It is a structural schematic diagram of the feeding device;

[0042] Fig.11 It is a structural schematic diagram of the product receiving device.

[0043] Description of reference numerals:

[0044] 1-cell conveying device; 2-cell loading device; 21-suction cup; 22-rotating mechanism; 23-lifting mechanism; 24-mounting bracket; 3-slice conveying device; 31-slice conveying belt; 32-active roller; 33-driven roller; 34-driving motor; 35-driven roller support frame; 36-tensioning bracket; 37-tensioning bolt; 38-guide groove; 4-grooving device; 41-grooving laser; 42-lifting mechanism; 43-base; 44-fiber field mirror; 5-slice device; 51-frame; 52-transverse module; 521-transverse main body; 522-moving frame; 5221-moving plate; 5222-connecting plate; 5223-connecting top plate; 5224-mounting plate; 523-second motor; 53-screw module; 54-first motor; 55-guide rail; 56-fragmentation laser; 57-cooling nozzle; 58-temperature measuring device; 59-inclined guide rail; 6-first positioning detection device; 7-second positioning detection device; 8-third positioning detection device; 9-unloading device; 91-adsorption plate; 92-separation mechanism; 93-connecting arm; 94-rotation mechanism; 10-product receiving device; 101-storage box; 102-movable rack; 103-fixed rack; 104-photoelectric sensor; 11-waste sheet receiving device; 100-battery sheet. DETAILED DESCRIPTION

[0045] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0046] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0047] For ease of description, spatially relative terms such as "upper", "lower", "left", "right", etc. may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the elements described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can also be positioned in other ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used here can be interpreted accordingly.

[0048] The present invention provides a battery cell splitting device, such as Figure 1 As shown, the cell splitting equipment includes:

[0049] A chip conveying device 3, which is used to convey the battery cells to be split;

[0050] Grooving device 4, the groove opening device 4 comprises a groove opening laser 41, and the groove opening laser 41 is configured to be able to open a groove in the direction to be split for the cell transported to the groove opening station by the splitting conveying device 3;

[0051] The splitting device 5 is arranged at the next station of the slotting device 4 in the conveying direction of the splitting conveying device 3. The splitting device 5 includes a movable splitting laser 56. The splitting laser 56 is arranged to emit laser light to the battery cell transported to the splitting station by the splitting conveying device 3 along the extension direction of the slot body so that the battery cell is split from the slot body along the direction to be split;

[0052] The splitting device 5 further comprises a cooling device, which comprises a cooling nozzle 57 which can move with the splitting laser 56 , and the cooling nozzle 57 can spray a cooling liquid toward the splitting laser 56 at the cutting position of the battery cell.

[0053] The cell splitting device provided by the present invention can split the cell into at least two pieces, and in the process of splitting the cell, the cooling nozzle 57 sprays coolant on the cutting part, which can avoid the problem of the cell being easily damaged due to excessive temperature at the cutting part.

[0054] The cell splitting device provided by the present invention is described in detail below through specific implementation modes and in conjunction with the accompanying drawings.

[0055] like Figure 1-Figure 3As shown, the cell splitting equipment provided in this embodiment also includes a cell conveying device 1 and a cell loading device 2 for conveying cell cells. The cell loading device 2 transports the cell from the cell conveying device 1 to the splitting conveying device 3, and the splitting conveying device 3 transports the cell to the grooving station and the splitting station in sequence.

[0056] Among them, the battery cell feeding device 2 can be used Figure 4 The structural form shown includes a suction cup 21 capable of adsorbing a battery cell, a lifting mechanism 23 capable of driving the suction cup 21 to rise and fall, and a rotating mechanism 22 capable of driving the suction cup 21 to rotate.

[0057] Optionally, two suction cups 21 are provided, and when one of the suction cups 21 is driven by the rotating mechanism 22 to rotate to correspond to the battery cell conveying device 1 to absorb the battery cell from the battery cell conveying device 1, the other suction cup 21 rotates to correspond to the splitting conveying device 3 to release the absorbed battery cell onto the splitting conveying device 3.

[0058] In this embodiment, the structure of the split conveying device 3 is as follows: Figure 5 As shown, the slicing conveying device 3 comprises a slicing conveying belt 31, a driving roller 32, a driven roller 33 and a driving motor 34 for driving the driving roller 32 to rotate. The driving roller 32 and the driven roller 33 support and drive the slicing conveying belt 31 to operate. In order to tension the slicing conveying belt 31, a driven roller support frame 35 connected to the driven roller 33, a tensioning bracket 36 installed on the fixed frame of the slicing conveying device 3 and a tensioning bolt 37 threadedly connected to the tensioning bracket 36 are provided. The slicing conveying belt 31 can be tensioned by rotating the tensioning bolt 37 to press against the driven roller support frame 35.

[0059] In this embodiment, the splitting conveying device 3 is also provided with a guide groove 38 and a discharge pipe capable of discharging the liquid in the guide groove 38. The cooling nozzle 57 arranged on the splitting device 5 pre-sprays the coolant toward the guide groove 38 before spraying the coolant toward the battery cell, wherein the guide groove 38 is located at the edge of the splitting conveying device 3, and the coolant sprayed by the cooling nozzle 57 is drained to the discharge pipe.

[0060] In this embodiment, the structure of the slotting device 4 is as follows: Figure 6 As shown, it includes a slotting laser 41, a base 43 and a lifting mechanism 42 installed on the base 43. The lifting device 42 can drive the slotting laser 41 to move up and down and adjust the slotting laser 41 through a fiber optic field lens 44, so that the slotting laser 41 can be located at a predetermined position to slot the battery cell.

[0061] It should be noted that the groove opening device 4 can open a groove at the first end and / or the second end of the battery cell 100 in the direction to be split, that is, the grooves can be set at the opposite ends of the battery cell respectively, or only at one end; or at least one groove can be opened between the first end and the second end of the battery cell 100 in the direction to be split.

[0062] To improve the quality of the split pieces, optionally, the depth of the groove body is greater than 50% of the thickness of the battery cell, more optionally, the depth of the groove body is greater than 80% of the thickness of the battery cell, and of course, preferably greater than 90%.

[0063] In this embodiment, if Figure 7 and Figure 8 As shown, the splitting device 5 also includes a moving frame 522 and a driving device for driving the moving frame 522 to move; the splitting laser 56 and the cooling nozzle 57 are both installed on the moving frame 522 and move with the moving frame 522. The coolant tank that supplies coolant to the cooling nozzle 57 can be installed on a fixed frame or other fixed structure.

[0064] Specifically, the splitting device 5 includes a frame 51 and a transverse movement module 52 that can move relative to the frame 51. The transverse movement module 52 includes a transverse movement body 521 and a movable frame 522 that can move relative to the transverse movement body 521. In addition, a guide rail 55 is also provided on the frame 51, and the transverse movement module 52 moves laterally along the guide rail 55.

[0065] The driving device includes a first driving mechanism capable of driving the transverse moving module 52 to move in a transverse direction relative to the frame 51 and a second driving mechanism capable of driving the moving frame 522 to move in a longitudinal direction relative to the transverse moving body 521 .

[0066] Optionally, the first driving mechanism includes a first motor 54 and a screw module 53 driven by the first motor 54, the screw module 53 includes a first screw driven by the first motor 54 and a first nut cooperating with the first screw, and the transverse movement body 521 is connected to the first nut, so that when the first motor 54 drives the first screw to rotate, the first nut moves along the first screw and drives the transverse movement body 521 and the movable frame 522 to move in the lateral direction.

[0067] The second driving mechanism includes a second motor 523, a second lead screw driven by the second motor 523, and a second nut matched with the second lead screw, and the moving frame 522 is connected to the second nut. When the second motor 523 drives the second lead screw to rotate, the second nut moves along the second lead screw and drives the moving frame 522 to move longitudinally.

[0068] It is understandable that the first driving mechanism and the second driving mechanism are not limited to the above structure, and other linear driving methods may also be used, such as cylinder driving method.

[0069] When the transverse moving module 52 is driven by the first driving mechanism to move in the transverse direction, the splitting laser 56 on the moving frame 522 moves along the extension direction of the groove body opened on the battery cell 100 and emits laser (such as Figure 7 A battery cell 100 to be split is arranged below the splitting laser 56, and the battery cell 100 is cracked along the groove body after being cut by the laser; after the splitting laser 56 cuts the battery cell 100 along the first cutting line in the transverse direction, it is driven by the second driving mechanism and moves along the longitudinal direction perpendicular to the transverse direction with the moving frame 22 for a preset distance, so that the splitting laser 56 moves to another position of the battery cell 100 along the longitudinal direction and then splits the battery cell along the second cutting line extending in the transverse direction.

[0070] Optionally, in the process of cutting the battery cell 100 into three or more battery cells, the split laser 56 can be driven to cut from the first end to the second end of the battery cell along the first cutting line in the transverse direction, and then move longitudinally to the second cutting line, cut from the second end to the first end of the battery cell along the second cutting line, and then move longitudinally to the third cutting line, cut from the first end to the second end of the battery cell along the third cutting line, that is, reciprocating cutting is performed; or after the split laser 56 cuts from the first end to the second end of the battery cell along the first cutting line, it can be driven longitudinally to the second cutting line, and then move transversely to the first end of the battery cell, cut from the first end to the second end, and then move to the third cutting line to cut from the first end to the second end, that is, multiple cutting lines of the split laser 56 are all cut from the first end to the second end.

[0071] The number of lines to be cut on the battery cell 100 may be one, two or more, which is determined according to the number of battery cells that actually need to be cut.

[0072] In this embodiment, if Fig. 9 As shown, the movable frame 522 includes a movable plate 5221, a connecting plate 5222, a connecting top plate 5223 and a mounting plate 5224, wherein the split laser 56 and the cooling nozzle 57 are mounted on the mounting plate 5224, the movable plate 5221 is connected to the second driving mechanism, and the movable plate 5221 is driven by the second driving mechanism to move longitudinally relative to the transverse moving body 521, the movable plate 5221 and the connecting top plate 5223 are connected by the connecting plates 5222 located on both sides, and the mounting plate 5224 is connected to the connecting top plate 5223, so that the mounting plate 5224 can move longitudinally driven by the movable plate 5221.

[0073] Optionally, in order to facilitate the adjustment of the cutting position of the splitting laser 56 corresponding to the cell sheet, the position of the splitting laser 56 on the moving frame 522 is adjustable.

[0074] Specific as Fig. 9As shown, a downwardly inclined guide rail 59 and a locking component (not shown) are provided between the split laser 56 and the mobile frame 522 (specifically, the mounting plate 5224 of the mobile frame 522). The split laser 56 can move along the inclined guide rail 59 to adjust the position, and after being adjusted to a predetermined position, it is locked on the mobile frame 522 by the locking component. The locking component can be a fastener such as a screw or a buckle.

[0075] In addition, in the present embodiment, the battery cell splitting device also includes a temperature measuring device 58 installed on the movable frame 522 for detecting the temperature at the battery cell cutting point. By setting the temperature measuring device 58, the temperature reduction of the cut battery cell can be controlled during the cutting process. For example, when the temperature measuring device 58 measures that the temperature at the current battery cell cutting point is high, the cooling device can be controlled to increase the amount of coolant used at the current cutting point; when the temperature measuring device 58 measures that the temperature at the current battery cell cutting point is not high, the cooling device can be controlled to reduce or cancel the amount of coolant used at the current cutting point.

[0076] It should be noted that the critical value of the temperature at the cell cutting location varies with the cell or process, and is not specifically limited in the present invention. In addition, the cooling device can be controlled manually or by a controller (single chip microcomputer, PLC, etc.).

[0077] Optionally, the temperature measuring device 58 is an infrared thermometer, which relies on its internal optical system to gather the infrared radiation energy of the object to the detector (sensor) according to the infrared radiation characteristics of the object, and converts it into an electrical signal, and then displays the temperature of the measured object on the display terminal after passing through an amplification circuit, a compensation circuit and linear processing. Of course, the temperature measuring device 58 can also be other temperature measuring components that can detect the cutting position.

[0078] In this embodiment, in order to keep the battery cell at the position to be cut when being cut by the splitting device 5,

[0079] The cell splitting device also includes a long strip of pressure bar, which is arranged near the position of the cell to be cut and pressed on the cell, and the length direction of the pressure bar is consistent with the extension direction of the cutting line;

[0080] Alternatively, one or two rows of adsorption holes are provided on the split conveying device 3, and the arrangement direction of each row of adsorption holes is consistent with the extension direction of the cutting line. When one row of adsorption holes is provided, one row of adsorption holes is provided near the position to be cut of the battery cell, and the battery cell is adsorbed by the row of adsorption holes, thereby improving the accuracy of the battery cell at the position to be cut; when two rows of adsorption holes are provided, the two rows of adsorption holes are symmetrically provided on both sides of the position to be cut of the battery cell. The two symmetrical rows of adsorption holes, while improving the accuracy of the battery cell position, make the stress on the battery cell on both sides of the position to be cut basically the same when the battery cell is cut, thereby improving the cutting accuracy of the battery cell.

[0081] In addition, in this embodiment, the cell splitting equipment also includes a first positioning detection device 6, which is used to perform position detection and appearance detection on the cell located at the slotting station, and the slotting laser 41 slots according to the position detected by the first positioning detection device 6.

[0082] The cell splitting equipment further includes a second positioning detection device 7 , which is used to perform position detection and appearance detection on the cell located at the splitting station. The splitting laser 56 emits laser according to the position detected by the second positioning detection device 7 .

[0083] In this embodiment, the cell splitting device further includes a feeding device 9 and a receiving device for receiving the cell. The feeding device 9 is configured to remove the split cell from the feeding station of the splitting conveying device 3 and place it in the receiving device.

[0084] The structure of the feeding device 9 can be as follows Fig.10 As shown, it includes an adsorption plate for adsorbing battery cells and a rotating mechanism 94 for driving the adsorption component to rotate. The adsorption component includes at least two adsorption plates 91 for adsorbing battery cells and a separation mechanism 92 for driving the adsorption plates 91 to separate from each other. Fig.10 Three adsorption plates 91 are shown, each of which can adsorb a battery cell. After each adsorption plate 91 adsorbs the split battery cell, the rotating mechanism 94 rotates each adsorption plate 91 to the receiving device for release. In order to allow each battery cell to have a spacing between them for easy storage, the separation mechanism 92 can drive each adsorption plate 91 to separate by a preset distance, and then control the adsorption plate 91 to release the adsorbed battery cell.

[0085] In this embodiment, the cell splitting equipment further includes a third positioning detection device 8, which is used to perform position detection and appearance detection on the cell located at the unloading station.

[0086] The receiving device may include a product receiving device 10 and a waste sheet receiving device 11. The product receiving device 10 is used to receive the qualified battery sheets after being split and detected by the third positioning detection device 8, and the waste sheet receiving device 11 is used to receive the unqualified waste sheets after being detected by the third positioning detection device 8. The unloading device 9 can release the adsorbed battery sheets in the product receiving device 10 or the waste sheet receiving device 11 according to the detection selection whether the battery sheets are qualified.

[0087] The structure of the product receiving device 10 can be as follows: Fig.11As shown, it includes a fixed frame 103, a mobile frame 102 that can move relative to the fixed frame 103, and a battery box 101 for accommodating battery cells is carried on the mobile frame 102. The product receiving device 10 also includes a photoelectric sensor 104 for detecting whether the battery box 101 is full. When the photoelectric sensor 104 detects that the battery box 101 is full, the mobile frame 102 can be controlled to move out and replace a new battery box.

[0088] Those skilled in the art should understand that the specific structures and processes shown in the above specific embodiments are only exemplary and not restrictive. Moreover, those skilled in the art can combine the various technical features shown above in various possible ways to form new technical solutions, or make other changes, which are all within the scope of the present invention.

Claims

1. A cell splitting device, characterized in that: The cell splitting device comprises: A chip conveying device, wherein the chip conveying device is used to convey the battery cells to be split; A slotting device, the slotting device comprising a slotting laser, the slotting laser being configured to be able to slot the battery sheet transported to the slotting station by the splitting conveying device in the direction to be split; A splitting device, which is arranged at the next station of the slotting device in the conveying direction of the splitting conveying device, and comprises a movable splitting laser, which is arranged to emit laser light to the battery sheet conveyed to the splitting station by the splitting conveying device along the extension direction of the slot body so that the battery sheet is split from the slot body along the direction to be split; Wherein, the splitting device further comprises a cooling device, wherein the cooling device has a cooling nozzle that can move with the splitting laser, and the cooling nozzle can spray a cooling liquid toward the splitting laser at the cutting position of the battery sheet; The split conveying device is provided with a guide groove and a discharge pipe capable of discharging liquid in the guide groove. The cooling nozzle pre-sprays the coolant toward the guide groove before spraying the coolant toward the battery cell. The guide groove is located at the edge of the split conveying device, and the coolant sprayed by the cooling nozzle is drained to the discharge pipe. One or two rows of adsorption holes are provided on the split conveying device, and the arrangement direction of each row of adsorption holes is consistent with the extension direction of the cutting line. When one row of adsorption holes is provided, the row of adsorption holes is provided near the position to be cut of the battery cell; when two rows of adsorption holes are provided, the two rows of adsorption holes are symmetrically provided on both sides of the position to be cut of the battery cell.

2. The cell splitting device according to claim 1, characterized in that: The splitting device also includes a moving frame and a driving device for driving the moving frame to move; The split laser and the cooling nozzle are both mounted on the moving frame and move with the moving frame.

3. The cell splitting device according to claim 2, characterized in that: The cell splitting device further comprises a temperature measuring device mounted on the movable frame for detecting the temperature at the cell cutting location.

4. The cell splitting device according to claim 2, characterized in that: The splitting device also includes a frame and a transverse moving module that can move relative to the frame, and the transverse moving module includes a transverse moving body and the moving frame that can move relative to the transverse moving body; The driving device includes a first driving mechanism capable of driving the transverse movement module to move in a transverse direction relative to the frame and a second driving mechanism capable of driving the movable frame to move in a longitudinal direction relative to the transverse movement body.

5. The cell splitting device according to claim 1, characterized in that: The cell slice splitting device further comprises a long strip of pressure bar, which is arranged near the position of the cell to be cut and pressed on the cell, and the length direction of the pressure bar is consistent with the extension direction of the cutting line.

6. The cell splitting device according to any one of claims 1 to 5, characterized in that: The cell splitting device further comprises a cell conveying device and a cell loading device for conveying the cell, wherein the cell loading device transports the cell from the cell conveying device to the splitting conveying device; The battery cell loading device includes a suction cup capable of adsorbing the battery cell, a lifting mechanism capable of driving the suction cup to rise and fall, and a rotating mechanism capable of driving the suction cup to rotate.

7. The cell splitting device according to any one of claims 1 to 5, characterized in that: The cell splitting device further comprises a first positioning detection device, the first positioning detection device is used to perform position detection and appearance detection on the cell located at the slotting station, the slotting laser slots according to the position detected by the first positioning detection device; and / or, The cell splitting equipment further comprises a second positioning detection device, which is used to perform position detection and appearance detection on the cell located at the splitting station, and the splitting laser emits laser according to the position detected by the second positioning detection device.

8. The cell splitting device according to any one of claims 1 to 5, characterized in that: The cell splitting device further comprises a feeding device and a receiving device for receiving the cell, wherein the feeding device is configured to take the split cell from the feeding station of the splitting conveying device and place it into the receiving device; The unloading device includes an adsorption component for adsorbing battery cells and a rotating mechanism for driving the adsorption component to rotate. The adsorption component includes at least two adsorption plates for adsorbing battery cells and a separating mechanism for driving the adsorption plates to separate from each other.

9. The cell splitting device according to claim 8, characterized in that: The cell splitting equipment further includes a third positioning detection device, which is used to perform position detection and appearance detection on the cell located at the unloading station; The receiving device includes a product receiving device and a waste sheet receiving device. The product receiving device is provided with a photoelectric sensor for detecting whether the battery sheets are fully loaded. The unloading device puts the qualified battery sheets after splitting into the product receiving device and puts the waste sheets into the waste sheet receiving device according to the detection of the third positioning detection device.

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