Flexible module battery cell breaking device and breaking method

Abstract

The present invention discloses a flexible component battery cell breaking device and a breaking method, belonging to the field of flexible battery technology. The breaking device includes a breaking mechanism, which includes a lifting frame, a first suction plate assembly and a second suction plate assembly. The bottom surface of the first suction plate assembly absorbs the small battery cells in odd-numbered rows of battery cells, while the bottom surface of the second suction plate assembly absorbs the small battery cells in even-numbered rows of battery cells. Then, the first suction plate assembly moves along a first direction, while the second suction plate assembly moves along a second direction, to break the adhesive between the multiple rows of small battery cells; the first direction and the second direction are opposite vertical directions. The present invention applies upper and lower shear forces to each row of small battery cells simultaneously through the synchronous reverse movement of the first suction plate assembly and the second suction plate assembly, so that all adhesives are broken at the same time, significantly improving the breaking efficiency, and completely solving the problem of low efficiency caused by the traditional splitting axis needing to press down the cracks one by one in sequence. It is particularly suitable for mass production of small-sized battery cells.

Description

Technical Field

[0001] The present invention belongs to the technical field of flexible batteries, and in particular relates to a flexible component battery sheet breaking device and a breaking method. Background Art

[0002] In order to achieve the windability of flexible components, large-sized battery cells need to be broken into hundreds of smaller battery cells. The traditional way to split large flexible component battery cells into small pieces is mainly to manually break the large pieces into long strips, and then break the long strips into small pieces one by one. The disadvantages of this production method are low efficiency and high production costs, and it is not suitable for mass production.

[0003] Existing large-size solar cells typically consist of a protective layer, adhesive, and silicon wafer stacked in sequence. With the development of existing technologies, a process has emerged that involves performing a double fracture of large-size solar cells. This process involves first fracturing the protective layer and silicon wafer, leaving the cell connected after the fracture, creating a semi-fractured state. A second fracture is then performed to break the adhesive. The main advantage of this process is that it significantly reduces fracture pressure, effectively protects the cell structure, and prevents cell misalignment and disorder.

[0004] However, the current two fractures usually use a splitting shaft to split, that is, the cracks on the battery cell are pressed down and broken in sequence using a splitting shaft. This method is first used to split the protective layer and the silicon wafer, and then the adhesive is further split using this method. The disadvantage of this production method is that the debugging is cumbersome and requires a high level of equipment debugging personnel. The cracks need to be broken in sequence, and the splitting efficiency is not high enough.

[0005] It should be noted that this part of the present invention only provides background technology related to the present invention and does not necessarily constitute prior art or public known technology. Summary of the Invention

[0006] The present invention provides a flexible component battery cell breaking device and breaking method, which at least solves the problem that the existing technology uses a breaking shaft to break the "seemingly broken" battery cell, the debugging is cumbersome, the equipment debugging personnel have high requirements for the level of the cracks, the cracks need to be broken in sequence, and the breaking efficiency is not high enough.

[0007] In order to achieve the above-mentioned objectives, in a first aspect, the present invention provides a flexible component battery cell breaking device, wherein the battery cell has been split into multiple small battery cells connected to each other by adhesive glue, the breaking device includes a breaking mechanism, the breaking mechanism includes a lifting frame, a first suction plate assembly and a second suction plate assembly, the first suction plate assembly can be movably arranged in the lifting frame along a first direction, and the second suction plate assembly can be movably arranged in the lifting frame along a second direction, and the lower part of the first suction plate assembly and the lower part of the second suction plate assembly are staggered with each other; wherein, the bottom surface of the first suction plate assembly absorbs the small battery cells in the odd-numbered rows of the battery cell, and at the same time, the bottom surface of the second suction plate assembly absorbs the small battery cells in the even-numbered rows of the battery cell, and then the first suction plate assembly moves along the first direction, and at the same time, the second suction plate assembly moves along the second direction to break the adhesive glue between the multiple rows of small battery cells; the first direction and the second direction are opposite vertical directions.

[0008] Preferably, the splitting mechanism also includes a first drive component, which includes a first drive source, a bidirectional lead screw, and a bearing seat plate; the first drive source is arranged on the top surface of the lifting frame, the bearing seat plate is arranged on the inner side of the bottom of the lifting frame, the bidirectional lead screw is vertically arranged in the lifting frame, the top of the bidirectional lead screw is connected to the first drive source, and the bottom of the bidirectional lead screw is arranged on the bearing seat plate through a bearing; the thread directions of the upper and lower parts of the bidirectional lead screw are opposite, the upper part of the bidirectional lead screw is provided with a first lead screw nut matching it, and the lower part of the bidirectional lead screw is provided with a second lead screw nut matching it.

[0009] Preferably, the first suction plate assembly includes a first suction plate mounting plate; a first screw nut connecting plate is provided on the top surface of the first suction plate mounting plate, and the first suction plate mounting plate is fixedly connected to the first screw nut through the first screw nut connecting plate; a plurality of first suction plates are arranged at intervals on the bottom surface of the first suction plate mounting plate, a first air pipe joint is provided on the side surface of each first suction plate, and a plurality of first vacuum suction ports are provided on the bottom surface of each first suction plate opposite to a row of small battery cells.

[0010] Preferably, first sliders are provided on both side surfaces of the first suction plate mounting plate, and the first sliders are slidably provided on corresponding first linear guide rails on the inner side wall of the lifting frame.

[0011] Preferably, the second suction plate assembly includes a second suction plate mounting plate; a second screw nut connecting plate is provided on the top surface of the second suction plate mounting plate, and the second suction plate mounting plate is fixedly connected to the second screw nut through the second screw nut connecting plate; a plurality of second suction plates are arranged at intervals on the bottom surface of the second suction plate mounting plate, a second air pipe joint is provided on the side of each second suction plate, and a plurality of second vacuum suction ports are provided on the bottom surface of each second suction plate opposite to a row of small battery cells.

[0012] Preferably, second sliders are provided on both side surfaces of the second suction plate mounting plate, and the second sliders are slidably provided on corresponding second linear guide rails on the inner side wall of the lifting frame.

[0013] Preferably, the breaking device also includes a vacuum suction cup mechanism, and the splitting mechanism can be movably arranged above the vacuum suction cup mechanism in the vertical direction. The vacuum suction cup mechanism includes a suction cup connecting plate, a suction cup, and a buffer pad; the suction cup is arranged on the top surface of the suction cup connecting plate, and a third air pipe joint is arranged on the side of the suction cup, and the suction cup is used to adsorb the bottom surface of the battery cell; the buffer pad is arranged on the top surface of the suction cup.

[0014] Preferably, the breaking device further comprises a supporting base plate, and the suction cup connecting plate is arranged on the supporting base plate via a foot seat.

[0015] Preferably, the breaking device further comprises a lifting mechanism, which comprises a column, a linear module, and a splitting mechanism mounting frame. The column is also mounted on the support base and is disposed on one side of the vacuum suction cup mechanism; the linear module is fixedly mounted on the upper portion of the column; one end of the splitting mechanism mounting frame is connected to the linear module, which is used to drive the splitting mechanism mounting frame to move in a vertical direction; the splitting mechanism is fixedly mounted on the other end of the splitting mechanism mounting frame.

[0016] In a second aspect, the present invention provides a method for breaking a flexible module battery sheet. The method is applied to the flexible module battery sheet breaking device described above, and the method comprises:

[0017] S102, the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly approach and contact the upper surface of the battery cell;

[0018] S104, the bottom surface of the first suction plate assembly absorbs the small battery cells in the odd-numbered rows of the battery cells, while the bottom surface of the second suction plate assembly absorbs the small battery cells in the even-numbered rows of the battery cells;

[0019] S106, the first suction plate assembly moves along the first direction, and the second suction plate assembly moves along the second direction, so as to break the adhesive between the rows of small battery cells;

[0020] The first direction and the second direction are perpendicular directions opposite to each other.

[0021] Preferably, between S102 and S104 , the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly continue to press the battery sheet down to a preset depth in the buffer pad.

[0022] Preferably, before S102 , the method further includes sucking the lower surface of the battery cell on the buffer pad by a suction cup.

[0023] Preferably, in S104, when the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly adsorb the battery cell, the suction cup stops adsorbing the battery cell.

[0024] Preferably, after S106, the method further includes:

[0025] S108, the first suction plate assembly moves in the second direction, and the second suction plate assembly moves in the first direction at the same time, until the bottom surface of the first suction plate assembly is flush with the bottom surface of the second suction plate assembly;

[0026] S110 , the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly stop adsorbing and move away from the battery cell.

[0027] The beneficial effects of the present invention are:

[0028] 1. The present invention applies upper and lower shear forces to each row of small battery cells simultaneously by synchronously moving the first and second suction plate assemblies in opposite directions, thereby simultaneously breaking all adhesives and significantly improving the splitting efficiency. This completely solves the problem of low efficiency caused by the traditional splitting axis that needs to press down the cracks one by one in sequence, and is particularly suitable for mass production of small-sized battery cells.

[0029] 2. When debugging the device of the present invention, it is only necessary to place the battery cell on the cushion pad and observe the width of the exposed edge of the suction plate. The relative position of the battery cell and the suction plate assembly can be adjusted intuitively and conveniently, completely avoiding the complexity and non-intuitiveness of the traditional adjustment of the crack axis and the crack line, and significantly reducing the technical requirements of the equipment debugging personnel.

[0030] 3. The elasticity of the cushioning pad of the present invention provides the necessary upward and downward movement space for the cell at the crack. Under the action of the upper and lower shear forces, the adhesive can be flexibly disconnected, avoiding the silicon wafer from being broken by rigid downward pressure. After the cracking is completed, the suction plate assembly resets and releases the vacuum. The resilience of the cushioning pad automatically pushes the cracked small cell fragments back to a roughly uniform level, effectively preventing the fragments from tilting, stacking, or overall disorder due to shear dislocation. This ensures a neat product, facilitates subsequent retrieval, and reduces the risk of secondary damage.

[0031] 4. The present invention adopts a bidirectional lead screw with positive and negative thread nuts for driving, combined with a linear guide rail for guidance, to ensure that the first suction plate assembly and the second suction plate assembly can perform precise and stable synchronous linear motion in strict opposite directions without offset or jamming, thereby ensuring the reliability of the shearing action and the uniformity of the splitting effect.

[0032] 5. The device of the present invention significantly reduces the manual intervention link and realizes a semi-automatic production mode, which has the advantages of reducing costs, increasing efficiency and improving product consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic structural diagram of a splitting mechanism provided in an embodiment of the present invention;

[0035] Figure 2 A schematic structural diagram of a breaking device provided in an embodiment of the present invention;

[0036] Figure 3 A schematic structural diagram of a first drive assembly provided in an embodiment of the present invention;

[0037] Figure 4 A schematic structural diagram of a first suction plate assembly provided in an embodiment of the present invention;

[0038] Figure 5 A schematic structural diagram of a second suction plate assembly provided in an embodiment of the present invention;

[0039] Figure 6 A schematic structural diagram of a vacuum suction cup mechanism provided in an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of a portion of the structure of the lifting mechanism provided in an embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 10. Breaking device; 100. Splitting mechanism; 110. Lifting frame; 111. Linear guide rail mounting plate; 120. First suction plate assembly; 121. First suction plate mounting plate; 122. First screw nut connecting plate; 123. First suction plate; 124. First air pipe joint; 125. First slider mounting plate; 126. First slider; 127. First rib plate; 128. First linear guide rail; 130. Second suction plate assembly; 131. Second suction plate mounting plate; 132. Second screw nut connecting plate; 133. Second suction plate; 134. Second air pipe joint; 135. Second slider mounting plate; 136. Second slider; 137. Second rib plate; 138. Second linear guide rail; 140. First drive assembly; 141. First drive source; 142. Bidirectional lead screw; 143. Bearing seat plate; 144. Bearing; 145. First lead screw nut; 146. Second lead screw nut; 200. Vacuum suction cup mechanism; 210. Suction cup connecting plate; 220. Suction cup; 230. Buffer pad; 240. Third air pipe joint; 250. Foot; 300. Support base plate; 400. Lifting mechanism; 410. Column; 420. Linear module; 430. Splitting mechanism mounting bracket; 440. Drag chain. DETAILED DESCRIPTION

[0043] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" are generally understood in conjunction with the directions shown in the drawings and actual applications.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0045] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0046] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined to form one or more new numerical ranges, and these numerical ranges should be considered to be specifically disclosed herein. The terms "optional" and "optional" mean that a range may or may not be included (or may or may not be present).

[0047] Flexible module cells are solar cells. During their production, the cells are first broken into multiple small pieces. A predetermined number of these pieces are then bonded to a flexible circuit board, with a certain gap between adjacent pieces, to form the flexible module cell. This allows the flexible circuit board to be unfolded when the cell is needed, allowing the multiple pieces to be laid out flatly, increasing the area of ​​contact between the pieces and sunlight, thereby enabling the photovoltaic power generation function of the flexible module cell and ensuring power generation efficiency. When the cell is no longer needed, the flexible circuit board can be rolled up for storage, saving space. During this process, the gaps between adjacent pieces prevent the pieces from interfering with the winding of the flexible circuit board, making it easier to store the flexible module cell.

[0048] The battery cells are arranged in a rectangular shape. After production, the cell size is relatively small (500mm*500mm). They need to be broken into multiple small pieces (50mm*50mm). That is, one cell needs to be broken into approximately 100 small pieces (arranged in a rectangular shape). Manual breaking of such a small size and quantity is obviously not suitable. The force application point is difficult to grasp, making it difficult to break. It is also time-consuming and labor-intensive, with low breaking efficiency and low automation, making it unsuitable for mass production. The disadvantages of using a splitting shaft to press down on the cracks on the cell sequentially are that debugging is cumbersome and requires high technical skills of the equipment debugger. The cracks need to be broken sequentially, and the breaking efficiency is not high enough. Therefore, the cell breaking method of the present invention is used to break the cell. But it is not limited to this. In other embodiments, the size of the battery cell may be 600mm*600mm, 700mm*700mm, 800mm*800mm, and the size of the small piece may be 30mm*30mm, 40mm*40mm. There is no specific limitation on the size of the battery cell and the size of the small piece.

[0049] The present invention provides a flexible component battery cell breaking device 10, wherein the battery cell has been broken into a plurality of small battery cells connected to each other by adhesive. The breaking device 10 includes a breaking mechanism 100, such as Figure 1As shown, the splitting mechanism 100 includes a lifting frame 110, a first suction plate assembly 120 and a second suction plate assembly 130. The first suction plate assembly 120 is movably disposed in the lifting frame 110 along a first direction, and the second suction plate assembly 130 is movably disposed in the lifting frame 110 along a second direction. The lower portion of the first suction plate assembly 120 and the lower portion of the second suction plate assembly 130 are staggered with each other; wherein, the bottom surface of the first suction plate assembly 120 absorbs the small battery cells in the odd-numbered rows of the battery cell, while the bottom surface of the second suction plate assembly 130 absorbs the small battery cells in the even-numbered rows of the battery cell. Then, the first suction plate assembly 120 moves along the first direction, while the second suction plate assembly 130 moves along the second direction, so as to break the adhesive between the multiple rows of small battery cells; the first direction and the second direction are perpendicular directions opposite to each other. The present invention applies upper and lower shear forces to each row of small battery cells simultaneously by synchronously moving the first suction plate assembly 120 and the second suction plate assembly 130 in opposite directions, thereby achieving simultaneous breaking of all adhesives, significantly improving the cracking efficiency, and completely solving the problem of low efficiency caused by the traditional cracking axis having to press down the cracks one by one in sequence. The present invention is particularly suitable for mass production of small-sized battery cells.

[0050] Preferably, if Figure 2 As shown, the flexible module battery sheet breaking device 10 of the present invention may further include a vacuum suction cup mechanism 200 , a supporting base plate 300 , and a lifting mechanism 400 .

[0051] Specifically, odd-numbered and even-numbered rows are counted starting with the outermost row on one side of the small battery cell and then row by row. For example, the battery cell consists of four rows of small battery cells, each row of small battery cells is connected by adhesive. When breaking the battery cells, the bottom surface of the first suction plate assembly 120 absorbs the small battery cells in the first and third rows of the battery cell, and the bottom surface of the second suction plate assembly 130 absorbs the small battery cells in the second and fourth rows of the battery cell.

[0052] It should be noted that the best use scenario of the flexible component cell breaking device 10 of the present invention is: after the cell has been split into multiple small cell slices connected to each other by adhesive, the adhesive between the multiple rows of small cell slices is broken. Because the breaking device 10 of the present invention provides multiple rows of cross-vertical shear forces, this shear force is particularly suitable for breaking adhesives and has a high breaking efficiency. For brittle hard materials such as silicon slices and protective layers, the shear force has a lower breaking efficiency. Nevertheless, it should be noted that the above scenario is only a preferred use scenario of the present invention and does not constitute the sole limitation of the present invention. Even if the present invention is used to directly break the protective layer, adhesive, and silicon slice of the cell simultaneously, or even if the present invention is used to break only the protective layer and silicon slice of the cell, it should still fall within the protection scope of the present invention.

[0053] Preferably, the lifting frame 110 may include a top plate and two side plates respectively provided on both sides of the top plate, and the top plate and the two side plates together form a door-shaped structure.

[0054] Preferably, the splitting mechanism 100 further includes a first driving assembly 140, such as Figure 3 As shown, the first drive assembly 140 includes a first drive source 141, a bidirectional lead screw 142, and a bearing seat plate 143; the first drive source 141 is arranged on the top surface of the lifting frame 110, the bearing seat plate 143 is arranged on the inner side of the bottom of the lifting frame 110, the bidirectional lead screw 142 is vertically arranged in the lifting frame 110, the top of the bidirectional lead screw 142 is connected to the first drive source 141, and the bottom of the bidirectional lead screw 142 is arranged on the bearing seat plate 143 through a bearing 144; the thread directions of the upper and lower parts of the bidirectional lead screw 142 are opposite, and the upper part of the bidirectional lead screw 142 is provided with a first lead screw nut 145 matching it, and the lower part of the bidirectional lead screw 142 is provided with a second lead screw nut 146 matching it.

[0055] Specifically, the first driving source 141 is arranged on the top surface of the top plate of the lifting frame 110, the bearing seat plate 143 is vertically arranged on the inner side of the lower part of the two side plates of the lifting frame 110, and the top of the bidirectional screw 142 passes through the top plate of the lifting frame 110 and is connected to the first driving source 141.

[0056] Specifically, when the first drive assembly 140 is in operation, the first drive source 141 drives the bidirectional screw 142 to rotate, the first screw nut 145 moves along the first direction at the upper part of the bidirectional screw 142, and the second screw nut 146 moves along the second direction at the lower part of the bidirectional screw 142.

[0057] Preferably, the first driving source 141 is a power source such as a motor, a stepping motor, or a servo motor. More preferably, the first driving source 141 is a servo motor.

[0058] It should be noted that the first drive assembly 140 of the present invention is a preferred technical solution. The present invention adopts a bidirectional screw 142, so that one driving source can synchronously drive the first screw nut 145 and the second screw nut 146 to move in opposite directions respectively, which can ensure that the timing, speed and distance of the up and down displacement of the first suction plate assembly 120 and the second suction plate assembly 130 are the same, which helps to improve the stability, uniformity and success rate of the split.

[0059] However, it should be noted that the above technical solution does not constitute the sole limitation of the present invention. Using two drive sources and two lead screws to respectively drive the first lead screw nut 145 and the second lead screw nut 146 can also achieve the effects of the present invention to a certain extent, but this requires the additional synchronous control of two servo motors. Therefore, in addition to the above solution, as long as the first suction plate assembly 120 is movably disposed in the lifting frame 110 along the first direction, and the second suction plate assembly 130 is movably disposed in the lifting frame 110 along the second direction, and a shear force is simultaneously applied to each row of small battery cells, thereby achieving the simultaneous severing of all adhesives, any solution should still fall within the scope of protection of the present invention.

[0060] Preferably, if Figure 4 As shown, the first suction plate assembly 120 includes a first suction plate mounting plate 121; a first screw nut connecting plate 122 is provided on the top surface of the first suction plate mounting plate 121, and the first suction plate mounting plate 121 is fixedly connected to the first screw nut 145 through the first screw nut connecting plate 122; a plurality of first suction plates 123 are arranged at intervals on the bottom surface of the first suction plate mounting plate 121, and a first air pipe joint 124 is provided on the side of each first suction plate 123, and a plurality of first vacuum suction ports corresponding to a row of small battery cells are provided on the bottom surface of each first suction plate 123.

[0061] It can be understood that because the first suction plate assembly 120 and the second suction plate assembly 130 are installed on the same bidirectional screw 142, the bottom surface of the first suction plate 123 and the bottom surface of the second suction plate 133 are flush with each other in the initial state, so the extension length of the first screw nut connecting plate 122 will be longer to ensure that the first suction plate mounting plate 121 can be fixedly connected to the first screw nut 145 located on the upper part of the bidirectional screw 142 through the first screw nut connecting plate 122.

[0062] Preferably, if Figure 4 As shown, first sliders 126 are mounted on both sides of the first suction plate mounting plate 121. These sliders 126 are slidably mounted on corresponding first linear guides 128 on the inner sidewalls of the lifting frame 110. The two first linear guides 128 face each other and are vertically arranged. The first linear guides 128 are attached to one side of the inner sidewall of the lifting frame 110 via the linear guide mounting plate 111. The coordination of the first sliders 126 and the first linear guides 128 ensures the vertical stability of the first suction plate assembly 120, thereby improving the stability, uniformity, and success rate of the splits.

[0063] Preferably, if Figure 4As shown, a first slider mounting plate 125 is provided on the side of the first suction plate mounting plate 121, and a first slider 126 is provided on the first slider mounting plate 125. An arc-shaped first rib plate 127 is also provided at the connection between the first suction plate mounting plate 121 and the first slider mounting plate 125 for better fixing the first slider mounting plate 125.

[0064] Preferably, if Figure 5 As shown, the second suction plate assembly 130 includes a second suction plate mounting plate 131; a second screw nut connecting plate 132 is provided on the top surface of the second suction plate mounting plate 131, and the second suction plate mounting plate 131 is fixedly connected to the second screw nut 146 through the second screw nut connecting plate 132; a plurality of second suction plates 133 are arranged at intervals on the bottom surface of the second suction plate mounting plate 131, and a second air pipe joint 134 is provided on the side of each second suction plate 133, and a plurality of second vacuum suction ports corresponding to a row of small battery cells are provided on the bottom surface of each second suction plate 133.

[0065] It can be understood that because the first suction plate assembly 120 and the second suction plate assembly 130 are installed on the same bidirectional lead screw 142, the bottom surface of the first suction plate 123 and the bottom surface of the second suction plate 133 are flush with each other in the initial state, so the extension length of the second lead screw nut connecting plate 132 will be shorter to ensure that the second suction plate mounting plate 131 can be fixedly connected to the second lead screw nut 146 located at the lower part of the bidirectional lead screw 142 through the second lead screw nut connecting plate 132.

[0066] Preferably, if Figure 5 As shown, second sliders 136 are mounted on both sides of the second suction plate mounting plate 131. These sliders 136 are slidably mounted on corresponding second linear guides 138 on the inner sidewall of the lifting frame 110. The two second linear guides 138 face each other and are vertically arranged. The second linear guides 138 are mounted on the other side of the inner sidewall of the lifting frame 110 via the linear guide mounting plate 111. The coordination of the second sliders 136 and the second linear guides 138 ensures the vertical stability of the second suction plate assembly 130, thereby improving the stability, uniformity, and success rate of the splits.

[0067] Preferably, if Figure 5 As shown, a second slider mounting plate 135 is provided on the side of the second suction plate mounting plate 131, and a second slider 136 is provided on the second slider mounting plate 135. An arc-shaped second rib 137 is also provided at the connection between the second suction plate mounting plate 131 and the second slider mounting plate 135 for better fixing the second slider mounting plate 135.

[0068] Preferably, if Figure 4 and Figure 5As shown, the first suction plate 123 and the second suction plate 133 each include a connecting portion and an adsorption portion. The first suction plate 123 and the second suction plate 133 are connected to the first suction plate mounting plate 121 and the second suction plate mounting plate 131 via the connecting portion. The adsorption portions of the first suction plate 123 and the second suction plate 133 are staggered, and the connecting portion and the adsorption portion together form an inverted T-shaped structure. The connecting portion of the first suction plate 123 and the second suction plate 133 should be of a certain length to ensure sufficient space for the first suction plate 123 and the second suction plate 133 to move up and down.

[0069] Preferably, if Figure 6 As shown, the breaking device 10 also includes a vacuum suction cup mechanism 200. The breaking mechanism 100 can be movably arranged above the vacuum suction cup mechanism 200 in the vertical direction. The vacuum suction cup mechanism 200 includes a suction cup connecting plate 210, a suction cup 220, and a buffer pad 230. The suction cup 220 is arranged on the top surface of the suction cup connecting plate 210. A third air pipe joint 240 is provided on the side of the suction cup 220. The suction cup 220 is used to adsorb the bottom surface of the battery cell. The buffer pad 230 is arranged on the top surface of the suction cup 220.

[0070] Preferably, the buffer pad 230 is a porous, breathable material with a certain degree of elasticity, specifically open-cell foam, porous rubber, woven fiber pad, etc. When the suction cup 220 is connected to the vacuum source through the third air pipe joint 240 and vacuum is drawn, the negative pressure (vacuum) will penetrate the pores of the breathable buffer pad 230, and the negative pressure will act on the bottom surface of the battery cell placed on the upper surface of the buffer pad 230.

[0071] The elasticity of the cushion 230 provides the necessary vertical movement space for the cell at the crack. It flexibly breaks the adhesive under the action of shear forces, preventing the silicon wafer from shattering due to rigid downward pressure. After the cracking process is complete, the suction plate assembly resets and releases the vacuum. The resilient force of the cushion 230 automatically pushes the cracked small cell fragments back to a roughly uniform level, effectively preventing the fragments from tilting, stacking, or becoming disorganized due to shear dislocation. This ensures a neat product, facilitates subsequent retrieval, and reduces the risk of secondary damage.

[0072] Furthermore, during the splitting process, the buffer pad 230 ensures that the battery cell and the suction plate are always in close contact, thereby ensuring that the battery cell will not be disordered while being split.

[0073] Preferably, if Figure 6As shown, the splitting device 10 also includes a support base 300, and the suction cup connecting plate 210 is mounted on the support base 300 via a foot 250. The connection hole between the foot 250 and the support base 300 is a waist-grooved hole, which facilitates adjustment of the position of the suction cup 220 during debugging. During debugging, the device of the present invention only needs to place the battery cell on the cushion pad 230 and observe the width of the exposed suction plate edge. The relative position of the battery cell and the suction plate assembly can be adjusted intuitively and conveniently, completely avoiding the complexity and unintuitiveness of traditional alignment of the split axis and the crack, significantly reducing the technical requirements of the equipment debugging personnel.

[0074] Specifically, the crack axis of the prior art needs to be aligned line-to-line with the crack on the battery cell, which makes debugging difficult. However, the present invention observes the width of the portion of the battery cell exposed to the suction plate. If the width is too large, the suction cup 220 is adjusted to align the battery cell and the suction plate assembly to ensure that the upper and lower positions are consistent, which makes debugging convenient.

[0075] Preferably, if Figure 2 and Figure 7 As shown, the splitting device 10 also includes a lifting mechanism 400, which includes a column 410, a linear module 420, and a splitting mechanism mounting frame 430. The column 410 is also mounted on the support base 300 and is located on one side of the vacuum suction cup mechanism 200. The linear module 420 is fixedly mounted on the upper portion of the column 410. One end of the splitting mechanism mounting frame 430 is connected to the linear module 420, which is used to drive the splitting mechanism mounting frame 430 to move in a vertical direction. The splitting mechanism 100 is fixedly mounted on the other end of the splitting mechanism mounting frame 430.

[0076] Preferably, the linear module 420 can be a screw-driven linear module, which can include a second drive source, a ball screw, a guide rail, a third screw nut, etc.; the third screw nut is fixedly connected to the split mechanism mounting frame 430, and the third screw nut can move on the ball screw.

[0077] Preferably, the second driving source is a power source such as a motor, a stepping motor, or a servo motor. More preferably, the second driving source is a servo motor.

[0078] Preferably, the lifting mechanism 400 further includes a drag chain 440, which is used for wiring to ensure that the entire splitting device is simple and beautiful.

[0079] Preferably, the breaking device 10 also includes a vacuum pump component, which includes a vacuum pump and multiple branch pipes. The vacuum pump is connected to multiple branch pipes at the same time, and each branch pipe is connected to an air pipe joint (the first air pipe joint 124, the second air pipe joint 134, and the third air pipe joint 240) to realize the vacuum adsorption function of each vacuum suction port and ensure the vacuum adsorption effect.

[0080] Preferably, the vacuum pump assembly also includes a main pipeline, a vacuum gas distribution block, multiple branch pipelines and a bus. The vacuum pump is connected to the vacuum gas distribution block through the main pipeline, the vacuum gas distribution block is connected to the bus through multiple branch pipelines, the bus is connected to multiple air pipe joints (first air pipe joint 124, second air pipe joint 134, third air pipe joint 240) through multiple branch pipelines. The vacuum gas distribution block is used to achieve a primary gas distribution function, and the bus is used to achieve a secondary gas distribution function. Specifically, through the two-stage gas distribution of the vacuum gas distribution block and the bus, the thicker main pipeline is divided step by step into multiple thinner branch pipelines and connected to multiple air pipe joints, avoiding the situation where the vacuum pump directly leads to multiple vacuum pipelines connected to multiple air pipe joints, thereby avoiding the problem of uneven airflow in multiple vacuum pipelines due to large changes in pipeline diameter, and thus achieving a step-by-step transition function, ensuring that the pressure of multiple pipelines (multiple branch pipelines or multiple branch pipelines) at the same level is balanced, making the entire vacuum pumping system stable and reliable.

[0081] The present invention further provides a method for breaking a flexible module battery sheet. The method is applied to the flexible module battery sheet breaking device 10, and the method comprises:

[0082] S101, sucking the lower surface of the battery cell on the buffer pad 230 through the suction cup 220;

[0083] S102, the bottom surface of the first suction plate assembly 120 and the bottom surface of the second suction plate assembly 130 approach and contact the upper surface of the battery cell; specifically, the lifting mechanism 400 drives the splitting mechanism 100 to move downward as a whole, so that the bottom surfaces of the first suction plate assembly 120 and the second suction plate assembly 130 contact the surface of the battery cell. At this time, the battery cell is fixed by the suction cup 220 of the vacuum suction cup mechanism 200, and the buffer pad 230 provides elastic support to prevent rigid impact from damaging the battery cell.

[0084] S103: The bottom surfaces of the first suction plate assembly 120 and the second suction plate assembly 130 continue to press the cell down to a preset depth within the buffer pad 230. This operation provides the flexible deformation space required for the adhesive to break, thereby preventing the silicon wafer from brittle fracture.

[0085] S104: The bottom surface of the first suction plate assembly 120 adsorbs the small battery cells in the odd-numbered rows of the battery cells, while the bottom surface of the second suction plate assembly 130 adsorbs the small battery cells in the even-numbered rows of the battery cells. When the bottom surfaces of the first suction plate assembly 120 and the second suction plate assembly 130 adsorb the battery cells, the suction cup 220 stops adsorbing the battery cells. By dynamically switching the adsorption force, the battery cells are only pulled in the vertical direction of the suction plate assembly during the fracture process, thereby avoiding displacement deviation or stress concentration caused by the bottom adsorption constraint.

[0086] S106. The first suction plate assembly 120 moves in the first direction, while the second suction plate assembly 130 moves in the second direction, to break the adhesive between the multiple rows of small battery cells. Specifically, the first driving source 141 drives the bidirectional screw 142 to rotate, driving the first screw nut 145 (connected to the first suction plate assembly 120) to move in the first direction (e.g., upward), while the second screw nut 146 (connected to the second suction plate assembly 130) moves in the second direction (e.g., downward), so that a reverse shear force is generated between adjacent rows of small battery cells, breaking all the adhesive at once. The first direction and the second direction are opposite vertical directions.

[0087] S108, the first suction plate assembly 120 moves along the second direction, and the second suction plate assembly 130 moves along the first direction until the bottom surface of the first suction plate assembly 120 and the bottom surface of the second suction plate assembly 130 are flush with each other;

[0088] S110 : The bottom surface of the first suction plate assembly 120 and the bottom surface of the second suction plate assembly 130 stop adsorbing and move away from the battery cell.

[0089] The present invention's fracturing method eliminates bidirectional stress conflicts by dynamically switching the suction force (suction cup 220 releases when the suction plate is attached). This, combined with a preset downward pressure depth of the buffer pad 230 to provide flexible deformation space, further utilizes a bidirectional lead screw 142 to drive the odd and even rows of suction plates to synchronously move in opposite directions, applying vertical shear force. This breaks all adhesive bonds simultaneously, effectively reducing cell fracturing time, significantly improving production efficiency, and significantly reducing product defect rates. After fracturing, the suction plate resets to a level position and releases the vacuum. The buffer pad 230 rebounds and automatically pushes the small cell back to a horizontal position, minimizing fragment misalignment and enabling direct transfer to the next process without manual adjustment. This addresses the technical issues of low fracturing efficiency, high fragment damage rate, and misaligned stacking in the mass production of flexible battery modules.

[0090] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A flexible module battery cell breaking device, characterized in that: The battery cell has been split into a plurality of small battery cells connected to each other by adhesive, and the splitting device includes: a splitting mechanism comprising a lifting frame, a first suction plate assembly, and a second suction plate assembly, wherein the first suction plate assembly is movably disposed in the lifting frame along a first direction, and the second suction plate assembly is movably disposed in the lifting frame along a second direction, and the lower portion of the first suction plate assembly and the lower portion of the second suction plate assembly are staggered with each other; The bottom surface of the first suction plate assembly absorbs the small battery cells in the odd-numbered rows of the battery cells, while the bottom surface of the second suction plate assembly absorbs the small battery cells in the even-numbered rows of the battery cells. Then, the first suction plate assembly moves in a first direction while the second suction plate assembly moves in a second direction to break the adhesive between the multiple rows of small battery cells. The first direction and the second direction are perpendicular directions opposite to each other; The splitting mechanism also includes a first drive assembly, which includes a first drive source, a bidirectional lead screw, and a bearing seat plate; the first drive source is arranged on the top surface of the lifting frame, and the bearing seat plate is arranged on the inner side of the bottom of the lifting frame. The bidirectional lead screw is vertically arranged in the lifting frame, the top of the bidirectional lead screw is connected to the first drive source, and the bottom of the bidirectional lead screw is arranged on the bearing seat plate through a bearing; the thread directions of the upper and lower parts of the bidirectional lead screw are opposite, and the upper part of the bidirectional lead screw is provided with a first lead screw nut matching it, and the lower part of the bidirectional lead screw is provided with a second lead screw nut matching it.

2. The flexible module battery sheet breaking device according to claim 1, characterized in that: The first suction plate assembly includes a first suction plate mounting plate; A first screw nut connecting plate is provided on the top surface of the first suction plate mounting plate, and the first suction plate mounting plate is fixedly connected to the first screw nut through the first screw nut connecting plate; A plurality of first suction plates are arranged at intervals on the bottom surface of the first suction plate mounting plate, a first air pipe joint is provided on the side of each first suction plate, and a plurality of first vacuum suction ports are provided on the bottom surface of each first suction plate opposite to a row of the small battery cells.

3. The flexible module battery sheet breaking device according to claim 2, characterized in that: First sliders are provided on both side surfaces of the first suction plate mounting plate. The first sliders are slidably provided on corresponding first linear guide rails on the inner side wall of the lifting frame.

4. The flexible module battery sheet breaking device according to claim 1, characterized in that: The second suction plate assembly includes a second suction plate mounting plate; A second screw nut connecting plate is provided on the top surface of the second suction plate mounting plate, and the second suction plate mounting plate is fixedly connected to the second screw nut through the second screw nut connecting plate; A plurality of second suction plates are arranged at intervals on the bottom surface of the second suction plate mounting plate, a second air pipe joint is provided on the side of each second suction plate, and a plurality of second vacuum suction ports are provided on the bottom surface of each second suction plate opposite to a row of the small battery sheets.

5. The flexible module battery sheet breaking device according to claim 4, characterized in that: Second sliding blocks are provided on both side surfaces of the second suction plate mounting plate. The second sliding blocks are slidably provided on corresponding second linear guide rails on the inner side wall of the lifting frame.

6. The flexible module battery sheet breaking device according to claim 1, characterized in that: The breaking device further comprises a vacuum suction cup mechanism, wherein the breaking mechanism is vertically movable above the vacuum suction cup mechanism, and the vacuum suction cup mechanism comprises: Suction cup connecting plate; A suction cup, the suction cup being arranged on the top surface of the suction cup connecting plate, a third air pipe joint being arranged on the side of the suction cup, and the suction cup being used to adsorb the bottom surface of the battery cell; A buffer pad is arranged on the top surface of the suction cup.

7. The flexible module battery sheet breaking device according to claim 6, characterized in that: The breaking device further comprises a supporting base plate, and the suction cup connecting plate is arranged on the supporting base plate via a foot seat.

8. The flexible module battery sheet breaking device according to claim 7, characterized in that: The breaking device further includes a lifting mechanism, which includes: A column, the column is also arranged on the supporting base plate, and the column is arranged on one side of the vacuum suction cup mechanism; A linear module, the linear module is fixedly arranged on the upper part of the column; A splitting mechanism mounting frame, one end of which is connected to the linear module, the linear module is used to drive the splitting mechanism mounting frame to move in a vertical direction, and the splitting mechanism is fixedly arranged at the other end of the splitting mechanism mounting frame.

9. A method for breaking a flexible module battery cell, characterized in that: The breaking method is applied to the flexible module battery sheet breaking device according to any one of claims 1 to 8, and the breaking method comprises: S102, the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly approach and contact the upper surface of the battery cell; S104, the bottom surface of the first suction plate assembly absorbs the small battery cells in the odd-numbered rows of the battery cells, while the bottom surface of the second suction plate assembly absorbs the small battery cells in the even-numbered rows of the battery cells; S106, the first suction plate assembly moves along the first direction, and the second suction plate assembly moves along the second direction, so as to break the adhesive between the rows of small battery cells; The first direction and the second direction are perpendicular directions opposite to each other.

10. The method for breaking a flexible module battery cell according to claim 9, wherein: Between S102 and S104 , the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly continue to press the battery sheet down to a preset depth in the buffer pad.

11. The method for breaking a flexible module battery cell according to claim 9, wherein: Before S102 , the method further includes sucking the lower surface of the battery cell on the buffer pad by a suction cup; In S104 , when the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly adsorb the battery cell, the suction cup stops adsorbing the battery cell.

12. The method for breaking a flexible module battery cell according to claim 9, wherein: After S106, it also includes: S108, the first suction plate assembly moves in the second direction, and the second suction plate assembly moves in the first direction at the same time, until the bottom surface of the first suction plate assembly is flush with the bottom surface of the second suction plate assembly; S110 , the bottom surface of the first suction plate assembly and the bottom surface of the second suction plate assembly stop adsorbing and move away from the battery cell.

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