Diaphragm cutting device and battery cell recycling equipment

Abstract

The utility model provides a diaphragm cutting device and battery cell recovery equipment, the diaphragm cutting device comprises a conveying mechanism, and the conveying mechanism is used for conveying a battery cell; the aligning mechanism is connected to the conveying mechanism; and the cutting mechanism comprises a cutter, the aligning mechanism is used for aligning the cutting position of the battery cell with the cutter, the cutter is used for cutting the diaphragm of the battery cell in the conveying process, and the success rate and efficiency of diaphragm cutting of the battery cell are improved.

Description

Technical Field

[0001] This application belongs to the field of cutting technology, specifically, it relates to a diaphragm cutting device and a battery cell recycling device. Background Technology

[0002] When dismantling and recycling used batteries, the common method is to crush the entire battery cell pack and then sort it.

[0003] However, the complete breakage of the battery cell leads to severe mixing of positive and negative electrode materials, which greatly increases the difficulty and cost of subsequent separation. In addition, although it is currently possible to use a hot knife to cut the separator of the battery cell for sorting and recycling, the cutting accuracy and efficiency are low, and the cut quality is poor. Utility Model Content

[0004] One objective of this application is to provide a new technical solution for a diaphragm cutting device and a battery cell recycling device.

[0005] According to a first aspect of the embodiments of this application, a diaphragm cutting device is provided, comprising:

[0006] A transport mechanism for transporting battery cells;

[0007] An alignment mechanism, which is connected to the transport mechanism;

[0008] A cutting mechanism, comprising a cutter, wherein an alignment mechanism is used to align the cutting position of the battery cell with the cutter, and the cutter is used to cut the separator of the battery cell during the conveying process.

[0009] Optionally, the conveying mechanism is used for continuously conveying battery cells.

[0010] Optionally, the alignment mechanism includes a fixing frame, a power element, and two pushers, wherein the fixing frame is disposed on the conveying mechanism;

[0011] When the power element is activated, the two pushers can move closer to or further away from each other in a direction perpendicular to the cell delivery, so as to push the cutting position of the cell to align with the cutter.

[0012] Optionally, when the two pushers abut against the two ends of the battery cell respectively, the distance between the two pushers corresponds to the size of the battery cell in the direction perpendicular to its transport.

[0013] Optionally, the power element includes a transmission component and two mating components, the transmission component being disposed on the fixed frame and capable of rotating on the fixed frame;

[0014] The pusher is connected to the transmission member via the mating member, and when the transmission member rotates, the two pushers can move closer to or further away from each other in a direction perpendicular to the cell delivery.

[0015] Optionally, the cutting mechanism includes a cutting frame;

[0016] The cutter is mounted on the cutting frame and is used to cut the diaphragm of the battery cell during the conveying process.

[0017] Optionally, the cutter is fixed to the cutting frame.

[0018] Optionally, the cutting mechanism includes a lifting structure, and the cutter is movably mounted on the cutting frame via the lifting structure.

[0019] Optionally, the cutting mechanism includes a transmitter disposed on the cutting frame and used to transmit laser light to the cutter.

[0020] According to a second aspect of the embodiments of this application, a battery cell recycling device is provided, which includes the diaphragm cutting device described in the first aspect.

[0021] One technical advantage of this application is:

[0022] This application provides a diaphragm cutting device, which includes a conveying mechanism for conveying battery cells; an alignment mechanism connected to the conveying mechanism; and a cutting mechanism including a cutter. The alignment mechanism is used to align the cutting position of the battery cell with the cutter, and the cutter is used to cut the diaphragm of the battery cell during the conveying process, thereby improving the success rate and efficiency of diaphragm cutting of the battery cell.

[0023] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0025] Figure 1 A schematic diagram of a diaphragm cutting device provided in one embodiment of this application;

[0026] Figure 2 A schematic diagram of an alignment mechanism for a diaphragm cutting device provided in one embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the cutting mechanism of a diaphragm cutting device provided in one embodiment of this application;

[0028] Figure 4 A schematic diagram of a battery cell for cutting by a diaphragm cutting device is provided as an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of a battery cell cut by a diaphragm cutting device according to one embodiment of this application.

[0030] in:

[0031] 1. Transportation organizations;

[0032] 2. Alignment mechanism; 201. Fixing frame; 203. Power element; 204. Transmission component; 205. Mating component; 206. Pushing component;

[0033] 3. Cutting mechanism; 301. Cutting blade; 302. Transmitter; 303. Cutting frame;

[0034] 100. Battery cells. Detailed Implementation

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0036] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0041] Reference Figure 1 This application provides a diaphragm cutting device, which includes:

[0042] Transport mechanism 1 is used to transport battery cell 100;

[0043] Alignment mechanism 2 is connected to conveying mechanism 1;

[0044] The cutting mechanism 3 includes a cutter 301 and an alignment mechanism 2 for aligning the cutting position of the battery cell 100 with the cutter 301. The cutter 301 is used to cut the diaphragm of the battery cell 100 during the conveying process so as to obtain two starting ends of the diaphragm on both sides of the cutting position.

[0045] In this embodiment, see Figure 1 The conveying mechanism 1 can convey the battery cell 100 along the X direction. During the conveying process of the battery cell 100, the alignment mechanism 2 can adjust the position of the battery cell 100 in the Y direction so that the cutting position of the battery cell 100 is aligned with the cutter 301, ensuring the accuracy of the cutting position of the battery cell 100 when it is cut by the cutter 301, and improving the efficiency of the cutting mechanism 3 in cutting the diaphragm of the battery cell 100.

[0046] In one embodiment, the cutter 301 of the cutting mechanism 3 is fixedly disposed relative to the conveying mechanism 1 to ensure the stability of the cutter 301 in cutting the battery cell during the conveying process.

[0047] In another embodiment, the cutter 301 of the cutting mechanism 3 can be raised and lowered in the Z direction to match the battery cells of different thicknesses, thereby improving the applicability of the cutter 301 to cutting battery cells of different thicknesses.

[0048] In this embodiment, the starting end of the diaphragm can be obtained by cutting with a cutting mechanism. The cutting mechanism may include a cutter. When the cutter is fixedly set, it can cut the outer diaphragm of the cell 100 during the transportation process, so as to cut the diaphragm at the cutting position on the diaphragm, thereby obtaining two starting ends of the diaphragm on both sides of the cutting position on the diaphragm.

[0049] In one embodiment, the cutter, when fixed, can cut the outermost diaphragm of the battery cell 100 during the transport process, that is, cut the outermost diaphragm open. One starting end of the cut outermost diaphragm is at the far end of the battery cell winding and becomes a waste diaphragm, which will fall off the battery cell; the other starting end is at the near end of the battery cell winding, that is, the diaphragm that is still connected to the center of the battery cell.

[0050] In one embodiment, the cutter, when fixed, can cut the outermost and second-outermost separators of the battery cell 100 during transport, that is, cut the outermost and second-outermost separators apart. One starting end of the cut outermost and second-outermost separators is at the far end of the battery cell winding and will fall off the battery cell; the other starting end of the outermost separator will also fall off the battery cell and be recycled as waste separator, while the other starting end of the second-outermost separator is at the near end of the battery cell winding, that is, the separator still connected to the center of the battery cell. Moreover, the electrode between the outermost and second-outermost separators can be exposed, and after the electrode separates from the separator, it can be reverse-wound and recycled.

[0051] In one embodiment, see Figure 4 and Figure 5When fixed, the cutter can cut the outermost, second outermost, and second second outermost (the second outermost layer is the membrane furthest from the outermost) membranes of the battery cell 100 during transport. The notch in the middle of the top surface of the battery cell is the cutting position. That is, the cutter 301 cuts the outermost, second outermost, and second second outermost membranes. One starting end of the cut outermost and second outermost membranes is at the far end of the battery cell winding and will fall off the battery cell. The other starting end of the outermost membrane will also fall off the battery cell and be recycled as waste membrane. The other starting end of the second outermost and second second outermost membranes is at the near end of the battery cell winding, that is, the membrane is still connected to the center of the battery cell. Moreover, the electrode between the outermost and second outermost membranes can be exposed and can be unwound and recycled after the electrode separates from the membrane. At the same time, the electrode between the second outermost and second second outermost membranes can be unwound and recycled along with the second outermost and second second outermost membranes.

[0052] The alignment mechanism 2 can align the cutting position of the battery cell 100 with the cutter 301, ensuring the accuracy of the cutting of the battery cell 100 by the cutter 301. The cutting mechanism 3 cuts the diaphragm of the battery cell 100 during the conveying process, which improves the success rate and cut quality of the diaphragm cutting of the battery cell, and will not damage the electrode sheets in the battery cell.

[0053] Moreover, the alignment mechanism 2 and the cutting mechanism 3 can achieve automated alignment and cutting of the battery cells without affecting the transport of the battery cells, thereby improving the production efficiency of diaphragm cutting in the battery cells and increasing the working cycle of the diaphragm cutting device.

[0054] In this embodiment, the battery cell is first placed on the conveyor belt of the conveying mechanism 1. The conveyor belt moves continuously to transport the battery cell. The battery cell passes sequentially through the alignment mechanism 2 and the cutting mechanism 3 to achieve the centering and alignment of the battery cell and the cutting of the surface diaphragm, which facilitates the unfolding of the battery cell.

[0055] The diaphragm cutting device provided in this application includes a conveying mechanism 1 for conveying the battery cell 100; an alignment mechanism 2 connected to the conveying mechanism 1; and a cutting mechanism 3 including a cutter 301. The alignment mechanism 2 is used to align the cutting position of the battery cell 100 with the cutter 301, and the cutter 301 is used to cut the diaphragm of the battery cell 100 during the conveying process, thereby improving the success rate and efficiency of diaphragm cutting of the battery cell.

[0056] In one embodiment, the conveying mechanism 1 is used to continuously convey the battery cell 100.

[0057] In this embodiment, the conveying mechanism 1 can continuously convey the battery cells, thereby improving the efficiency of battery cell conveying and cutting.

[0058] Specifically, the conveying mechanism 1 rotates continuously, and the battery cell passes through the alignment mechanism 2 and the cutting mechanism 3 in sequence. The alignment mechanism 2 can adjust the position of the battery cell and measure its length and width. The cutting mechanism 3 can cut the diaphragm on the surface of the battery cell so that two starting ends of the diaphragm can be obtained on both sides of the diaphragm cutting position.

[0059] When the diaphragm cutting device is working, the battery cells are fed onto the conveying mechanism 1, and the conveyor belt of the conveying mechanism 1 operates in continuous motion. When the battery cell moves to the alignment mechanism 2, the alignment mechanism 2 is activated to push the cutting position of the battery cell toward the position aligned with the cutter 301, thereby achieving the centering and alignment of the battery cell 100.

[0060] In one embodiment, see Figure 2 The alignment mechanism 2 includes a fixed frame 201, a power element 203 and two pushers 206. The fixed frame 201 is mounted on the conveying mechanism 1.

[0061] When the power element 203 is activated, the two pushers 206 can move closer to or further away from each other in a direction perpendicular to the cell delivery, so as to push the cutting position of the cell to align with the cutter 301.

[0062] In this embodiment, the alignment mechanism 2 can push the battery cell by a movable pusher or move the battery cell after it is attracted by a suction cup, so as to adjust the position of the battery cell. When the battery cell deviates from the conveyor line aligned with the cutting station, the alignment mechanism 2 can adjust the position of the battery cell and align it with the cutting station, so as to ensure the accuracy and efficiency of the cutting mechanism 3 in cutting the diaphragm of the battery cell 100 at the cutting station.

[0063] In one embodiment, see Figure 2 When the two pushers 206 abut against the two ends of the battery cell respectively, the distance between the two pushers 206 corresponds to the size of the battery cell in the direction perpendicular to its transport.

[0064] In this embodiment, when the power element 203 is activated, it can drive the two pushers 206 to perform a centrally symmetrical movement. That is, the two pushers 206 can move closer or further away at the same time, so as to push the battery cell to achieve the centering and alignment of the battery cell. At the same time, the sensor inside the alignment mechanism 2 can detect the distance of the pusher 206's movement, thereby obtaining the size of the battery cell in the direction perpendicular to its conveying direction, which facilitates the cutting mechanism 3 to control the range of cutting the diaphragm of the battery cell.

[0065] In one embodiment, see Figure 2 The power element 203 includes a transmission component 204 and two mating components 205. The transmission component 204 is mounted on the fixed frame 201 and can rotate on the fixed frame 201.

[0066] The pusher 206 is connected to the transmission member 204 via the mating member 205, and when the transmission member 204 rotates, the two pushers 206 can move closer to or further away from each other in the direction perpendicular to the cell delivery.

[0067] In this embodiment, the transmission component 204 can be a synchronous belt or chain, the mating component 205 can be a slider or a connecting rod, and the pushing component 206 can be a push block or a larger push plate. When the battery cell moves to the alignment mechanism 2, the driving part in the power element 203 drives the transmission component 204 to rotate, and then drives the two pushing components 206 to move symmetrically along the alignment mechanism 2 through the mating component 205, pushing the battery cell to the symmetrical position and realizing the Y-axis centering of the battery cell. When the centering is in place, the sensor inside the alignment mechanism 2 detects the distance of the pushing component 206's movement, and then obtains the height dimension of the battery cell (the dimension of the battery cell in the direction perpendicular to its transport).

[0068] In this embodiment, the drive unit of the power element 203 can be a servo motor with an absolute encoder, which outputs a constant torque to the transmission element 204 through the transmission wheel.

[0069] Two pushers 206 approach the battery cell from each other in a direction perpendicular to the battery cell's transport. After the battery cell is aligned with the cutting station from both ends, the number of rotations of the motor shaft can be obtained by reading the encoder data of the servo motor. Combined with the diameter of the transmission component 204, the distance traveled by the pushers 206 can be calculated. The height of the battery cell can then be obtained from the distance between the two pushers 206. The height direction is perpendicular to the direction of battery cell transport. The measurement of the battery cell's dimensions in its transport direction is similar, so as to obtain the stroke of the cutting mechanism 3 for diaphragm cutting and ensure the accuracy of the cutting.

[0070] In one embodiment, see Figure 3 The cutting mechanism 3 includes a cutting frame 303;

[0071] The cutter 301 is disposed on the cutting frame 303 and is used to cut the diaphragm of the battery cell 100 during the conveying process.

[0072] In this embodiment, the cutting frame 303 can be relatively fixedly mounted on the conveying mechanism 1 to ensure the stability of the cutting mechanism 3; the cutter 301 is mounted on the cutting frame 303, and the fixedly mounted cutting frame 303 can provide the cutter 301 with an accurate position to ensure the accuracy of the cutter 301 in cutting the diaphragm of the battery cell 100 during the conveying process.

[0073] In one embodiment, see Figure 3 The cutter 301 is fixed on the cutting frame 303.

[0074] In this embodiment, the battery cell 100 passes through the cutting station of the cutting mechanism 3 during the transportation process. The cutter 301 is fixed on the cutting station of the cutting frame 303, so that the separator of the battery cell 100 can be cut by the fixed cutter 301 during the transportation process. While ensuring the accuracy of the cutting position on the battery cell, the efficiency of battery cell cutting is improved.

[0075] In one embodiment, the cutting mechanism 3 includes a lifting structure, and the cutter 301 is movably mounted on the cutting frame 303 via the lifting structure.

[0076] In this embodiment, the lifting structure can drive the cutter to move up and down in the Z direction, so that the cutter 301 can adjust its height according to the thickness of the battery cell, so that the upper surface separator of the battery cell is within a suitable cutting focal length range, ensuring the cutting depth of the upper surface separator of the battery cell and avoiding cutting damage to the electrode sheet in the battery cell.

[0077] In one embodiment, see Figure 3 The cutting mechanism 3 includes a transmitter 302, which is disposed on the cutting frame 303 and is used to transmit laser light to the cutter 301.

[0078] In this embodiment, as the battery cell passes through the cutter 301, the transmitter 302 emits light, the cutter 301 remains stationary, and the conveyor belt of the conveying mechanism 1 carries the battery cell continuously, thus enabling the cutter 301 to cut the surface membrane of the battery cell.

[0079] Specifically, the transmitter 302 emits light to the cutter 301, so that the cutter 301 can perform laser cutting on the surface membrane of the battery cell. No small tear will occur during membrane cutting, avoiding the risk of membrane breakage due to cut quality problems, and ensuring the quality and efficiency of the cutting mechanism 3 in cutting the membrane.

[0080] This application provides a battery cell recycling device, which includes the diaphragm cutting device described above.

[0081] This battery cell recycling equipment can realize processes such as battery cell feeding, separator cutting, electrode separation, and classified collection, thereby improving the efficiency of battery cell recycling. At the same time, the battery cell recycling equipment can be equipped with dust removal and purification devices to remove harmful impurities such as dust and waste gas generated throughout the process, ensuring the environmental friendliness of the battery cell recycling process.

[0082] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A diaphragm cutting device, characterized in that, include: A transport mechanism (1) for transporting battery cells (100); Alignment mechanism (2), which is connected to the transport mechanism (1); The cutting mechanism (3) includes a cutter (301), and the alignment mechanism (2) is used to align the cutting position of the battery cell (100) with the cutter (301). The cutter (301) is used to cut the diaphragm of the battery cell (100) during the conveying process.

2. The diaphragm cutting device according to claim 1, characterized in that, The conveying mechanism (1) is used to continuously convey battery cells (100).

3. The diaphragm cutting device according to claim 1, characterized in that, The alignment mechanism (2) includes a fixing frame (201), a power element (203) and two pushers (206), wherein the fixing frame (201) is disposed on the conveying mechanism (1); When the power element (203) is activated, the two pushers (206) can move closer to or further away from each other in a direction perpendicular to the cell delivery, so as to push the cutting position of the cell to align with the cutter (301).

4. The diaphragm cutting device according to claim 3, characterized in that, When the two pushers (206) respectively abut against the two ends of the battery cell, the distance between the two pushers (206) corresponds to the size of the battery cell in the direction perpendicular to its transport.

5. The diaphragm cutting device according to claim 3, characterized in that, The power element (203) includes a transmission component (204) and two mating components (205). The transmission component (204) is disposed on the fixed frame (201) and is rotatable on the fixed frame (201). The pusher (206) is connected to the transmission member (204) via the mating member (205), and when the transmission member (204) rotates, the two pushers (206) can move closer to or further away from each other in a direction perpendicular to the cell delivery.

6. The diaphragm cutting device according to claim 1, characterized in that, The cutting mechanism (3) includes a cutting frame (303); The cutter (301) is disposed on the cutting frame (303) and is used to cut the diaphragm of the battery cell (100) during the conveying process.

7. The diaphragm cutting device according to claim 6, characterized in that, The cutter (301) is fixed to the cutting frame (303).

8. The diaphragm cutting device according to claim 6, characterized in that, The cutting mechanism (3) includes a lifting structure, and the cutter (301) is movably mounted on the cutting frame (303) through the lifting structure.

9. The diaphragm cutting device according to claim 7 or 8, characterized in that, The cutting mechanism (3) includes a transmitter (302) disposed on the cutting frame (303) and used to transmit laser light to the cutter (301).

10. A battery cell recycling device, characterized in that, Includes the diaphragm cutting device according to any one of claims 1-9.

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