A cutting device and battery cell

Abstract

The application provides a cutting device and a battery cell. The cutting device is used for cutting the bent edge of the tail rubber of the side rubber attached to the end of the battery cell. The cutting mechanism comprises: a first clamping part, comprising a first clamping part and a second clamping part which are arranged at intervals and have a first gap; a second clamping part, comprising a third clamping part and a fourth clamping part which are arranged at intervals and have a second gap; the first clamping part and the second clamping part can be driven to approach each other, so that the first clamping part and the third clamping part clamp the first surface of the tail rubber, the second clamping part and the fourth clamping part clamp the second surface of the tail rubber, and the first gap and the second gap are opposite to the bent edge; a cutter can move into the first gap and the second gap and cut the bent edge, so that the first surface and the second surface are disconnected. The disconnected first surface will no longer interfere with the second surface, and the adhesion will be comfortable without the occurrence of lifting. In the shell entering process, the shell and the side rubber do not have the risk of scratching.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, specifically to a rubber cutting device, and also to a battery cell that incorporates the aforementioned rubber cutting device. Background Technology

[0002] For multi-JR cells (i.e., multiple cells connected in parallel within an aluminum casing; JR stands for jelly roll, representing a jelly roll), the next step after welding the top cover is generally to assemble the cells and apply adhesive, commonly known as wrapping with Mylar. The process includes: cell arrival, cell assembly, Mylar folding, applying bottom adhesive, applying side adhesive, tail adhesive folding, and unloading. The side adhesive is applied to the end of the cell along its length, forming a U-shaped structure. This includes a first section extending along the cell's length, a second section bent from the cell's length to extend along its thickness, and a third section bent from the cell's thickness to extend along its length. The side adhesive furthest from the end cover forms the tail adhesive, which is also U-shaped, consisting of a second surface forming two bent edges and two first surfaces located on either side of the second surface. The tail adhesive folding process is further divided into folding the first surface and folding the second surface.

[0003] Currently, Mylar batteries commonly exhibit tape lifting during the folding process. The main reason is that the first and second sides are a single, connected structure. After bending the first side, an overlapping area forms between them, preventing the tape from adhering properly to the battery cell surface. This causes the tape to lift, increasing rework costs. Furthermore, when the battery cell enters the casing process, it can cause the aluminum casing to rub against the side adhesive, resulting in poor casing and affecting product quality. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a tape cutting device and a battery processing production line, which solves the problem that tape tends to curl up when folding the tape.

[0005] To achieve the above objectives, this application provides the following technical solution: A cutting device is used to cut the side adhesive attached to the end of a battery cell. The side adhesive includes a tail adhesive extending out of the battery cell, the tail adhesive including a bent edge extending along the edge of the battery cell, and a first surface and a second surface located on both sides of the bent edge. The cutting device includes a cutting mechanism, the cutting mechanism comprising: The first clamping member includes a first clamping portion and a second clamping portion that are spaced apart and have a first gap formed therein; The second clamping member includes a third clamping portion and a fourth clamping portion that are spaced apart and have a second gap; the first clamping member and the second clamping member can be driven to move closer to each other, so that the first clamping portion clamps the first surface with the third clamping portion, the second clamping portion clamps the second surface with the fourth clamping portion, and the first gap and the second gap are opposite to the bent edge; The cutter can move into the first gap and the second gap and cut the bent edge, so that the first surface and the second surface are disconnected.

[0006] Optionally, in the above-mentioned rubber-cutting device, the first surface and the second surface have angle bisectors, and the first direction is parallel to the extending direction of the angle bisectors, wherein: The cutting mechanism includes a first driving device, which can drive the first clamping member and the second clamping member to move closer or further apart from each other along the first direction. And / or, The cutting mechanism includes a second driving device, which is capable of driving the cutting blade to move along the first direction, and the cutting blade is parallel to the angle bisector. And / or, The surfaces of the first clamping part, the second clamping part, the third clamping part, and the fourth clamping part that can adhere to the tail adhesive are all provided with friction-enhancing structures.

[0007] Optionally, in the above-mentioned rubber cutting device, the rubber cutting device includes a frame; the cutting mechanism includes a first connecting plate and a second connecting plate, and the first clamping member, the second clamping member, and the cutting blade are all connected to the second connecting plate; The first connecting plate is mounted on the frame in an adjustable position along a second direction, which is parallel to the length direction of the battery cell; The second connecting plate is mounted on the first connecting plate in an adjustable position along a third direction, which is parallel to the thickness direction of the battery cell.

[0008] Optionally, in the above-mentioned rubber-cutting device, The frame is provided with a plurality of first adjustment holes spaced apart along the second direction, and the first connecting plate is provided with a second adjustment hole extending along the second direction. The second adjustment hole can be selectively connected to the first adjustment hole, and the extension length of the second adjustment hole is greater than the distance between two adjacent first adjustment holes. And / or, The first connecting plate has a third adjustment hole, and the second connecting plate has a fourth adjustment hole. At least one of the third adjustment hole and the fourth adjustment hole is a strip-shaped hole extending along the third direction. The fourth adjustment hole is connected to the third adjustment hole. And / or, The first connecting plate and / or the frame are rotatably connected to an adjusting screw, which is screwed into the second connecting plate. And / or, The frame is provided with a first scale extending along the second direction, and the first scale can mark the adjustment displacement of the first connecting plate; And / or, The first connecting plate and / or the frame are provided with a second scale extending in a third direction, the second scale being capable of marking the adjustment displacement of the second connecting plate.

[0009] Optionally, in the above-mentioned rubber cutting device, the rubber cutting device includes a frame that supports the cutting mechanism and a transplanting mechanism. The transplanting mechanism can drive the cutting mechanism to move along a fourth direction to the target rubber cutting position. The fourth direction is parallel to the width direction of the battery cell.

[0010] Optionally, in the above-mentioned rubber-cutting device, the transplanting mechanism includes: Base; The third drive device has a fixed part fixed to the base and a telescopic part fixed to the frame; A first guide assembly limits the guide movement of the frame relative to the base along the fourth direction.

[0011] Optionally, in the above-mentioned glue-cutting device, the glue-cutting device includes a cell positioning mechanism capable of moving to the target glue-cutting position; the cell positioning mechanism includes: A bracket is provided to support the battery cell from the bottom. The pressure block is telescopically movable in a third direction to press against the top of the battery cell and secure the battery cell to the bracket.

[0012] Optionally, in the above-mentioned rubber-cutting device, The bracket includes a bracket body and a first elastic element covering the bracket body; And / or, A second elastic element is provided at the bottom of the pressure block; And / or, The cell positioning mechanism includes a fourth driving device, which can drive the bracket and the pressure block to move as a whole to the target cutting position; And / or, The cell positioning mechanism includes a fifth driving device, which drives the pressure block to move along the third direction.

[0013] Optionally, the above-mentioned glue-cutting device further includes a detection mechanism, which is used to detect whether the battery cell located at the target glue-cutting position has side adhesive.

[0014] A battery cell has a side adhesive attached to its surface. The side adhesive includes a side adhesive body and a tail adhesive. The side adhesive body is bonded to a first side of the battery cell, and the tail adhesive is bonded to a second side perpendicular to the first side. The bent edge of the tail adhesive is cut by the adhesive cutting device described above, so that the first and second sides of the tail adhesive are disconnected. One of the first surface and the second surface is directly bonded to the second side surface, and the other is bonded to the first surface.

[0015] The adhesive cutting device and battery cell of this application are specially equipped with a cutting mechanism. The cutting mechanism cuts the bent edge of the tail adhesive of the side adhesive, so that the first and second sides of the tail adhesive are disconnected. In this way, when the first side is first bonded to the surface of the battery cell, the first side will no longer interfere with the second side, and there is no overlapping area between them. The first side can be bonded to the surface of the battery cell as a whole. Then, the second side is bonded to the first side, so that the second side can also be bonded to the surface of the battery cell as a whole. There is no problem of the side adhesive lifting off, no need to increase the rework cost, and after the battery cell flows into the casing process, there is no risk of scratching between the aluminum shell and the side adhesive. The casing yield is greatly improved, ensuring product quality. Furthermore, the cutting mechanism of this application includes a first clamping member, a second clamping member, and a cutter. The third clamping part of the second clamping member and the first clamping part of the first clamping member can be moved to the inner and outer sides of the first surface, respectively, and the two cooperate to clamp and fix the area of ​​the first surface near the bending edge. The fourth clamping part of the second clamping member and the second clamping part of the first clamping member can be moved to the inner and outer sides of the second surface, respectively, and the two cooperate to clamp and fix the area of ​​the second surface near the bending edge. At the same time, the first clamping part and the second clamping part... The first gap between the holding parts and the second gap between the third and fourth holding parts can be moved to the inner and outer sides of the bent edge, respectively. In this way, both the first and second surfaces are in a tensioned state in the area near the bent edge, and the bent edge is also in a tensioned state, so that the cutter can accurately and reliably cut the bent edge and complete the disconnection between the first and second surfaces. Furthermore, the cutter enters within the first and second gaps, which further limits the cutting direction of the cutter and ensures that the cutter can accurately cut the bent edge. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the battery cell after the side adhesive is applied according to an embodiment of this application.

[0018] Figure 2 for Figure 1 A schematic diagram of the structure after the bent edge of the end adhesive of the middle side adhesive has been cut.

[0019] Figure 3 for Figure 2 A schematic diagram of the structure after folding the first side.

[0020] Figure 4 for Figure 3 A schematic diagram of the structure after folding the second side.

[0021] Figure 5 This is a schematic diagram of the structure of the rubber cutting device according to an embodiment of this application.

[0022] Figure 6 for Figure 5 The main view.

[0023] Figure 7 This is a schematic diagram of the cutting mechanism according to an embodiment of this application.

[0024] Figure 8 This is a partial view of the cutting mechanism according to an embodiment of this application.

[0025] Figure 9 This is a schematic diagram of the structure of the first clamping member, the second clamping member, and the first driving device in accordance with an embodiment of this application.

[0026] Figure 10 This is a partial view of the cutting mechanism in an embodiment of this application cutting the bent edge of the side adhesive.

[0027] Figure 11 This is a schematic diagram of the transplanting mechanism according to an embodiment of this application.

[0028] Figure 12 This is a schematic diagram of the battery cell positioning mechanism according to an embodiment of this application.

[0029] Figure 13 This is a schematic diagram of the transplanting mechanism in the initial position according to an embodiment of this application.

[0030] Figure 14This is a schematic diagram of the transplanting mechanism moving to the target cutting position according to an embodiment of this application.

[0031] superior Figures 1-14 middle: 1. Cutting mechanism; 2. Frame; 3. Transplanting mechanism; 4. Cell positioning mechanism; 5. Detection mechanism; 6. Cell; 7. Side adhesive; 8. End cap; 21. First adjustment hole; 22. First scale; 11. First clamping component; 12. Second clamping component; 13. Cutter; 14. First driving device; 15. Second driving device; 16. First connecting plate; 17. Second connecting plate; 18. Reinforcing friction structure; 31. Base; 32. Third drive unit; 33. First guide assembly; 41. Bracket; 42. Pressure block; 43. Fourth drive unit; 44. Fifth drive unit; 71. Bending edge; 72. First side; 73. Second side; 111. First clamping part; 112. Second clamping part; 121. Third clamping part; 122. Fourth clamping part; 161. Second adjustment hole; 162. Third adjustment hole; 163. Adjusting screw; 164. Second scale; 171. Fourth adjustment hole; 411. Bracket body; 412. First elastic element; 421. Second elastic element. Detailed Implementation

[0032] This application provides a cutting device and a battery cell, which is specially equipped with a cutting mechanism. The cutting mechanism cuts the bent edge of the tail adhesive of the side adhesive, so that the first and second sides of the tail adhesive are disconnected. In this way, when the first side is first bonded to the surface of the battery cell, the first side will no longer interfere with the second side, and there is no overlapping area between them. The first side can be bonded to the surface of the battery cell as a whole. Then, the second side is bonded to the first side, so that the second side can also be bonded to the surface of the battery cell as a whole. There is no problem of the side adhesive lifting off, no need to increase the rework cost, and after the battery cell flows into the casing process, there is no risk of the casing and the side adhesive scratching each other. The casing yield is greatly improved, ensuring product quality.

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] like Figures 1-14 As shown, this application embodiment provides a cutting device for cutting the side adhesive 7 attached to the end of the battery cell. Please refer to... Figure 1 The side adhesive 7 includes a tail adhesive extending from the battery cell. The tail adhesive includes a bent edge 71 extending along the edge of the battery cell, and a first surface 72 and a second surface 73 located on both sides of the bent edge 71. Please refer to [link to relevant documentation]. Figures 5-10 The rubber cutting device includes a cutting mechanism 1, which comprises a first clamping member 11, a second clamping member 12, and a cutter 13. The first clamping member 11 includes a first clamping portion 111 and a second clamping portion 112 spaced apart and forming a first gap. The second clamping member 12 includes a third clamping portion 121 and a fourth clamping portion 122 spaced apart and forming a second gap. The first clamping member 11 and the second clamping member 12 can be driven to move closer to each other, so that the first clamping portion 111 and the third clamping portion 121 clamp the first surface 72, and the second clamping portion 112 and the fourth clamping portion 122 clamp the second surface 73, and the first gap and the second gap are opposite to the bent edge 71. The cutter 13 can move into the first gap and the second gap and cut the bent edge 71, disconnecting the first surface 72 from the second surface 73.

[0035] No specific limitations are made on the shape of the battery cell; the battery cell can be a cuboid, a polygonal prism, etc.; the following introduction will take a cuboid battery cell as an example.

[0036] It should be noted that the end of the battery cell includes a first side surface that is integrally bent and connected. This first side surface can be U-shaped or L-shaped. In this embodiment, the first side surface is the side surface where the R-corner of the battery cell is located. Correspondingly, the side adhesive 7 can be U-shaped or L-shaped. The side adhesive 7 includes a side adhesive body and a tail adhesive. The side adhesive body is bonded to the first side surface, and the tail adhesive extends out of the battery cell. The cut tail adhesive is bonded to a second side surface perpendicular to the first side surface. In this embodiment, the second side surface is the surface of the battery cell opposite to the end cap. The following description uses the U-shaped first side surface as an example.

[0037] Please see Figure 1 Optionally, "cell end" refers to the end of the cell along its length; the cell end is not a plane, but has a certain extension length along the cell's length. For some embodiments, please refer to... Figures 1-4In some parallel embodiments, the bending direction of the first side is: cell length direction → cell thickness direction → cell length direction; at this time, the tail adhesive extends out of the cell along the cell width direction; the bent edge 71 is parallel to the cell width direction along the extended cell edge; the "second side" formed by bonding the cut first side 72 and second side 73 is the "side of the cell perpendicular to the cell width direction". In some parallel embodiments, the bending direction of the first side is: cell width direction → cell thickness direction → cell width direction; at this time, the tail adhesive extends out of the cell along the cell length direction; the bent edge 71 is parallel to the cell length direction along the extended cell edge; the "second side" formed by bonding the cut first side 72 and second side 73 is the "side of the cell perpendicular to the cell length direction".

[0038] The adhesive cutting device of this application can cut the bent edge 71 of any side adhesive 7 that is adapted to be bonded to the battery cell. The bonding and mating forms of the battery cell and the side adhesive 7 will not be listed here.

[0039] The tail adhesive has a U-shaped structure, including an inner side and an outer side. The first clamping member 11 can move to the inner side of the tail adhesive, and the corresponding second clamping member 12 can move to the outer side of the tail adhesive. When in position, the first clamping member 11 and the second clamping member 12 are brought closer together to clamp the first surface 72 and the second surface 73 on the inner and outer sides of the tail adhesive, respectively. The cutter 13 faces the first gap and the second gap to cut the bent edge 71 through the first gap and the second gap. When the cutter mechanism 1 approaches the battery cell along the width direction of the battery cell, the first clamping member 11 can move precisely to the inner side of the tail adhesive, and the second clamping member 12 can move precisely to the outer side of the tail adhesive.

[0040] This application specifically includes a cutting mechanism 1, which cuts the bent edge 71 of the tail adhesive 7 of the side adhesive 7, disconnecting the first surface 72 and the second surface 73 of the tail adhesive. Thus, when the first surface 72 is first bonded to the surface of the battery cell, the first surface 72 will no longer interfere with the second surface 73, and there is no overlapping area between them. The first surface 72 can be bonded to the surface of the battery cell as a whole. Then, the second surface 73 is bonded to the first surface 72, so that the second surface 73 can also be bonded to the surface of the battery cell as a whole (it should be noted that the order of bonding the first surface 72 and the second surface 73 is not limited; the first surface 72 can be bonded first and then the second surface 73, or vice versa). The side adhesive 7 does not lift up, eliminating the need for rework costs. Furthermore, after the battery cell enters the casing process, there is no risk of scratching between the casing and the side adhesive 7, greatly improving the casing yield and ensuring product quality.

[0041] Furthermore, the cutting mechanism 1 of this application includes a first clamping member 11, a second clamping member 12, and a cutter 13. The third clamping part 121 of the second clamping member 12 and the first clamping part 111 of the first clamping member 11 can be moved to the inner and outer sides of the first surface 72, respectively, and the two cooperate to clamp and fix the area of ​​the first surface 72 near the bent edge 71. The fourth clamping part 122 of the second clamping member 12 and the second clamping part 112 of the first clamping member 11 can be moved to the inner and outer sides of the second surface 73, respectively, and the two cooperate to clamp and fix the area of ​​the second surface 73 near the bent edge 71. At the same time, the first clamping part 111 and the cutter 13... The first gap between the second clamping parts 112 and the second gap between the third clamping part 121 and the fourth clamping part 122 can be moved to the inner and outer sides of the bent edge 71, respectively. In this way, the first surface 72 and the second surface 73 are both in a tensioned state in the area near the bent edge 71, and the bent edge 71 is also in a tensioned state, so that the cutter 13 can accurately and reliably cut the bent edge 71 and complete the disconnection between the first surface 72 and the second surface 73. Furthermore, the cutter 13 enters within the first gap and the second gap, which further limits the entry direction of the cutter 13 and ensures that the cutter 13 can accurately cut the bent edge 71.

[0042] It should be noted that the cutting device can be equipped with one cutting mechanism 1 to cut different bent edges 71 sequentially; alternatively, the cutting device can be equipped with multiple cutting mechanisms 1 to align with the multiple bent edges 71 included in the tail glue, so as to cut all bent edges 71 simultaneously, improving work efficiency. Optionally, on each end side of the battery cell, the cutting device is equipped with two cutting mechanisms 1 to align with the two bent edges 71 of the corresponding U-shaped tail glue, so as to cut the two bent edges 71 simultaneously. Along the length direction of the battery cell, the battery cell has two battery cell ends, and the cutting mechanisms 1 located at the two battery cell ends are symmetrically arranged.

[0043] In some embodiments of this application, the first surface 72 and the second surface 73 have angle bisectors, and a first direction is parallel to the extension direction of the angle bisector. See also... Figure 7 , Figure 9 The cutting mechanism 1 includes a first driving device 14, which can drive the first clamping member 11 and the second clamping member 12 to move closer or further away from each other along a first direction, so as to clamp and fix the tail glue on the inside and outside of the tail glue respectively or to loosen the tail glue.

[0044] Please see Figure 10 The first direction is Figure 10 The direction indicated by the middle arrow. The first drive device 14 can be any of the following: electric drive, hydraulic drive, cylinder drive, etc. Optionally, the first drive device 14 is a cylinder.

[0045] Please see Figure 7 In some embodiments of this application, the cutting mechanism 1 includes a second driving device 15, which can drive the cutter 13 to move along the first direction, and the cutter 13 is parallel to the angle bisector.

[0046] It should be noted that the second drive device 15 can be any of the following: an electric drive, a hydraulic drive, or a cylinder drive. Optionally, the second drive device 15 can be a cylinder.

[0047] The cutter 13 of this application is a sheet-like structure parallel to the aforementioned angle bisector. When the cutter moves along the aforementioned angle bisector, it can smoothly move from the outside of the tail rubber to the inside of the tail rubber, thereby completing the cutting of the bent edge 71. The cutting action is clean, efficient, precise and reliable.

[0048] Please see Figure 8 , Figure 10 In some embodiments of this application, the surfaces of the first clamping part 111, the second clamping part 112, the third clamping part 121, and the fourth clamping part 122 (hereinafter collectively referred to as clamping parts) that can adhere to the tail adhesive are all provided with a friction-enhancing structure 18.

[0049] It should be noted that the enhanced friction structure 18 can be formed on the surface of the clamping part itself, and can be horizontal or vertical stripes, a grid pattern, a sawtooth pattern, etc. The enhanced friction structure 18 can also be an additional material layer fixed to the surface of the clamping part; this material layer can itself have a high coefficient of friction, or it can be processed into a shape that increases the coefficient of friction; furthermore, the material layer can be made of S304 coated with Teflon and processed into a sawtooth shape. As described above, this increases the clamping and fixing effect of the clamping part on the tail rubber, ensuring that the cutter 13 can smoothly cut the bent edge 71.

[0050] The structural form of the first clamping member 11 and the second clamping member 12 is not specifically limited. As long as it can be ensured that when the cutting mechanism 1 moves, the first clamping part 111 and the third clamping part 121 can be located on the inner and outer sides of the first surface 72 and can clamp the first surface 72, and the second clamping part 112 and the fourth clamping part 122 can be located on the inner and outer sides of the second surface 73 and can clamp the second surface 73.

[0051] Please see Figure 5 , Figure 6 In some embodiments of this application, the rubber-cutting device includes a frame 2. See also... Figure 7 The cutting mechanism 1 includes a first connecting plate 16 and a second connecting plate 17. The first clamping member 11, the second clamping member 12, and the cutter 13 are all connected to the second connecting plate 17. (See also...) Figure 6The first connecting plate 16 is adjustablely mounted on the frame 2 along a second direction, which is parallel to the length direction of the battery cell. The second connecting plate 17 is adjustablely mounted on the first connecting plate 16 along a third direction, which is parallel to the thickness direction of the battery cell.

[0052] The fourth direction is parallel to the width direction of the battery cell. Please refer to [link / reference]. Figure 5 The second direction, the third direction, and the fourth direction are... Figure 5 The direction indicated by the middle arrow. The movement of the frame 2 drives the movement of the cutting mechanism 1; when the frame 2 drives the cutting mechanism 1 to move along the fourth direction, the first clamping member 11 and the second clamping member 12 can be accurately positioned inside the tail glue and outside the tail glue respectively, and the cutter is accurately aligned with the bent edge 71.

[0053] To ensure that the cutting mechanism 1 can adapt to battery cells of different sizes, the cutting mechanism 1 is designed with an adjustable position. The displacement of the cutting mechanism 1 along the second direction can be adjusted by moving the first connecting plate 16, thereby achieving compatibility of battery cell length; the displacement of the cutting mechanism 1 along the third direction can be adjusted by moving the second connecting plate 17, thereby achieving compatibility of battery cell thickness.

[0054] Please see Figure 6 In some embodiments of this application, the frame 2 has a plurality of first adjustment holes 21 spaced apart along a second direction, and the first connecting plate 16 has a second adjustment hole 161 extending along the second direction. The second adjustment hole 161 can be selectively connected to the first adjustment hole 21, and the extension length of the second adjustment hole 161 is greater than the distance between two adjacent first adjustment holes 21.

[0055] Along a third direction, multiple rows of first adjustment holes 21 are arranged; correspondingly, multiple rows of second adjustment holes 161 are also arranged. Both the first adjustment holes 21 and the second adjustment holes 161 can be threaded holes, so that the first connecting plate 16 can be easily and quickly detached from the frame 2 by using fasteners with external threads, facilitating position adjustment.

[0056] By selecting the first adjusting hole 21 at different positions through the second adjusting hole 161, the large-size position adjustment of the first connecting plate 16 can be achieved, which is convenient and quick to operate; and the second adjusting hole 161 is a strip hole, so the small-size position adjustment of the first connecting plate 16 can be achieved by moving the second adjusting hole 161 relative to the first adjusting hole 21; furthermore, since the extension length of the second adjusting hole 161 is greater than the distance between two adjacent first adjusting holes 21, there is no blind spot for the second adjusting hole 161 relative to the frame 2 along the second direction, so it can be adjusted to any position, which is comprehensive and reliable.

[0057] In some parallel embodiments, the position adjustment of the first connecting plate 16 relative to the frame 2 can also be achieved through the structure of slide rails and grooves or other structures.

[0058] Please see Figure 6 In some embodiments of this application, the first connecting plate 16 is provided with a third adjustment hole 162, and the second connecting plate 17 is provided with a fourth adjustment hole 171. At least one of the third adjustment hole 162 and the fourth adjustment hole 171 is a strip hole extending in a third direction, and the fourth adjustment hole 171 is connected to the third adjustment hole 162.

[0059] Optionally, the third adjusting hole 162 is a circular hole, and the fourth adjusting hole 171 is a strip-shaped hole. Multiple rows of the third adjusting holes 162 are arranged along a third direction; correspondingly, multiple rows of the fourth adjusting holes 171 are also arranged. Both the third adjusting holes 162 and the fourth adjusting holes 171 can be threaded holes, thus allowing for convenient and quick detachable connection of the second connecting plate 17 to the first connecting plate 16 using fasteners with external threads, facilitating position adjustment.

[0060] The second connecting plate 17 can be adjusted relative to the first connecting plate 16 by moving the fourth adjusting hole 171 relative to the third adjusting hole 162, making the operation convenient and quick.

[0061] In some parallel embodiments, the position adjustment of the second connecting plate 17 relative to the first connecting plate 16 can also be achieved by a slide rail and slide groove structure or other structures.

[0062] Please see Figure 6 In some embodiments of this application, the first connecting plate 16 and / or the frame 2 are rotatably connected to an adjusting screw 163, which is screwed into the second connecting plate 17.

[0063] It should be noted that a mounting block is fixed to the bottom of the first connecting plate 16, and an adjusting screw 163 is disposed on the mounting block and can rotate relative to the mounting block. The adjusting screw 163 has an extension length in a third direction. A threaded hole is provided at the bottom of the second connecting plate 17, and the second connecting plate 17 has clearance space for the adjusting screw 163 to move in a third direction.

[0064] Remove the fasteners that fix the third adjustment hole 162 and the fourth adjustment hole 171, and the second connecting plate 17 can be moved relative to the first connecting plate 16 in a third direction by rotating the adjusting screw 163. The structure is simple and the operation is convenient and fast.

[0065] Please see Figure 6 In some embodiments of this application, the frame 2 is provided with a first scale 22 extending in a second direction, the first scale 22 being able to mark the adjustment displacement of the first connecting plate 16.

[0066] It should be noted that the length of the first scale 22 is not less than the length of the arrangement of the multiple first adjustment holes 21. As shown above, this clearly demonstrates the adjustment position of the first connecting plate 16 relative to the frame 2, facilitating precise control of the adjustment distance.

[0067] Please see Figure 6 In some embodiments of this application, the first connecting plate 16 and / or the frame 2 are provided with a second scale 164 extending in a third direction, the second scale 164 being able to mark the adjustment displacement of the second connecting plate 17.

[0068] It should be noted that the length of the second scale 164 is not less than the extension length of the fourth adjustment hole 171. Optionally, the second scale 164 is set on the first connecting plate 16. As described above, the adjustment position of the second connecting plate 17 relative to the first connecting plate 16 is clearly displayed, facilitating precise control of the adjustment distance.

[0069] Please see Figure 5 , Figure 11 In some embodiments of this application, the cutting device includes a frame 2 that receives the cutting mechanism 1 and a transfer mechanism 3. The transfer mechanism 3 can move the cutting mechanism 1 along a fourth direction to the target cutting position, the fourth direction being parallel to the width direction of the battery cell.

[0070] By setting up the transplanting mechanism 3, the frame 2 and the cutting mechanism 1 are moved accurately and reliably, so that the first clamping film 11 and the second clamping film 12 are moved to the target cutting positions located inside the tail rubber and outside the tail rubber, respectively.

[0071] Please see Figure 11 In some embodiments of this application, the transplanting mechanism 3 includes a base 31, a third drive device 32, and a first guide assembly 33. The base 31 is fixed to the work platform or the ground and remains stationary. The third drive device 32 includes a fixed part and a telescopic part that moves telescopically relative to the fixed part. The fixed part of the third drive device 32 is fixed to the base 31, and the telescopic part is fixed to the frame 2. The first guide assembly 33 limits the guide movement of the frame 2 relative to the base 31 in a fourth direction.

[0072] It should be noted that the third drive device 32 can be any of the following: an electric drive, a hydraulic drive, or a cylinder drive. Optionally, the third drive device 32 can be a cylinder.

[0073] The first guide assembly 33 has an extension length along the fourth direction, and along the second direction, the first guide assembly 33 is provided on both sides of the third drive device 32. The first guide assembly 33 may be a combination structure of slide rail and slide groove.

[0074] The transplanting mechanism 3 has a simple structure, and the drive frame 2 drives the cutting mechanism 1 to move accurately and reliably. The guiding and limiting function of the first guide component 33 further ensures the accuracy and reliability of the above-mentioned movement and guarantees the structural strength.

[0075] Please see Figure 5 , Figure 12 In some embodiments of this application, the cutting device includes a cell positioning mechanism 4 movable to a target cutting position; the cell positioning mechanism 4 includes a bracket 41 and a pressure block 42. The bracket 41 is capable of supporting the cell from the bottom. The pressure block 42 is capable of telescopic movement in a third direction to press against the top of the cell and fix the cell to the bracket 41.

[0076] The battery cell positioning mechanism 4 has a simple structure and can reliably fix the battery cell, thereby ensuring that the tail adhesive remains fixed and guaranteeing the shearing effect.

[0077] In some embodiments of this application, the bracket 41 includes a bracket body 411 and a first elastic member 412 covering the bracket body 411. It should be noted that the first elastic member 412 can be made of an elastic cushioning material such as rubber. As described above, the first elastic member 412 can provide elastic cushioning for the battery cell while preventing damage to the battery cell.

[0078] In some embodiments of this application, a second elastic element 421 is provided at the bottom of the pressure block 42. It should be noted that the second elastic element 421 can be made of rubber or other elastic buffer structures. As described above, the second elastic element 421 can provide elastic buffering for the battery cell while preventing damage to the battery cell.

[0079] In some embodiments of this application, the cell positioning mechanism 4 includes a fourth driving device 43, which is capable of driving the bracket 41 and the pressure block 42 to move together to the target cutting position.

[0080] It should be noted that the cell positioning mechanism 4 moves along a third direction to or away from the target cutting position. The fourth drive device 43 can be any of an electric drive, a hydraulic drive, or a cylinder drive. Optionally, the fourth drive device 43 is a cylinder.

[0081] In some embodiments of this application, the adhesive cutting device further includes a detection mechanism 5, which is used to detect whether the battery cell located at the target adhesive cutting position is adhered with side adhesive 7.

[0082] It should be noted that each of the two battery cells is equipped with a detection mechanism 5 to detect the side adhesive 7 on the ends of the two cells. The side adhesive 7 is blue adhesive and has color, so the detection mechanism 5 can be a color sensor. Of course, the detection mechanism 5 can also be a visual inspection mechanism that includes an imaging component, which will not be listed here.

[0083] As shown above, by setting up the detection mechanism 5, it is possible to accurately and reliably detect whether the end of the battery cell is bonded with side adhesive 7, thus avoiding the problem of missed bonding and ensuring the reliable operation of the process.

[0084] In summary, this application also provides a battery cell with a side adhesive 7 attached to its surface. The side adhesive 7 includes a side adhesive body and a tail adhesive. The side adhesive body is bonded to a first side of the battery cell, and the tail adhesive is bonded to a second side perpendicular to the first side. The bent edge 71 of the tail adhesive is cut using the adhesive cutting device described above, so that the first side 72 and the second side 73 of the tail adhesive are disconnected. One of the first side 72 and the second side 73 is directly bonded to the second side, and the other is bonded to the first side.

[0085] The bent edge 71 of the tail adhesive on the side of the battery cell in this application is cut by the adhesive cutting device described above, so that the first side 72 and the second side 73 of the tail adhesive are disconnected. In this way, when the first side 72 is first bonded to the second side of the battery cell, the first side 72 will no longer interfere with the second side 73, and there is no overlapping area between them. The first side 72 can be bonded to the surface of the battery cell as a whole. Then, the second side 73 is bonded to the first side 72, so that the second side 73 can also be bonded to the second side of the battery cell as a whole. There is no problem with the side adhesive 7 lifting up, no need to increase the rework cost, and after the battery cell flows into the casing process, there is no risk of the casing and the side adhesive 7 scratching each other. The casing yield is greatly improved, ensuring product quality.

[0086] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not restrict this application from necessarily using the aforementioned specific details for implementation.

[0087] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0088] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0089] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0090] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0091] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A rubber-cutting device, characterized in that, The device is used to cut the side adhesive (7) attached to the end of the battery cell. The side adhesive (7) includes a tail adhesive extending out of the battery cell. The tail adhesive includes a bent edge (71) extending along the edge of the battery cell, and a first surface (72) and a second surface (73) located on both sides of the bent edge (71). The cutting device includes a cutting mechanism (1), which includes: The first clamping member (11) includes a first clamping part (111) and a second clamping part (112) that are spaced apart and have a first gap. The second clamping member (12) includes a third clamping portion (121) and a fourth clamping portion (122) spaced apart and having a second gap; the first clamping member (11) and the second clamping member (12) can be driven to move closer to each other, so that the first clamping portion (111) clamps the first surface (72) with the third clamping portion (121), the second clamping portion (112) clamps the second surface (73) with the fourth clamping portion (122), and the first gap and the second gap are opposite to the bent edge (71); The cutter (13) can move into the first gap and the second gap and cut the bent edge (71) to disconnect the first surface (72) from the second surface (73).

2. The rubber-cutting device according to claim 1, characterized in that, The first face (72) and the second face (73) have angle bisectors, and a first direction is parallel to the extension direction of the angle bisectors, wherein: The cutting mechanism (1) includes a first driving device (14), which is capable of driving the first clamping member (11) and the second clamping member (12) to move closer or further apart from each other along the first direction; And / or, The cutting mechanism (1) includes a second driving device (15), which is capable of driving the cutter (13) to move along the first direction, and the cutter (13) is parallel to the angle bisector. And / or, The surfaces of the first clamping part (111), the second clamping part (112), the third clamping part (121), and the fourth clamping part (122) that can adhere to the tail adhesive are all provided with a friction-enhancing structure (18).

3. The rubber-cutting device according to claim 1, characterized in that, The rubber cutting device includes a frame (2); the cutting mechanism (1) includes a first connecting plate (16) and a second connecting plate (17), and the first clamping member (11), the second clamping member (12), and the cutter (13) are all connected to the second connecting plate (17). The first connecting plate (16) is mounted on the frame (2) in an adjustable position along a second direction, which is parallel to the length direction of the battery cell; The second connecting plate (17) is mounted on the first connecting plate (16) in an adjustable position along a third direction, which is parallel to the thickness direction of the battery cell.

4. The rubber-cutting device according to claim 3, characterized in that, The frame (2) has a plurality of first adjustment holes (21) arranged at intervals along the second direction, and the first connecting plate (16) has a second adjustment hole (161) extending along the second direction. The second adjustment hole (161) can be selectively connected to the first adjustment hole (21), and the extension length of the second adjustment hole (161) is greater than the distance between two adjacent first adjustment holes (21). And / or, The first connecting plate (16) has a third adjustment hole (162), and the second connecting plate (17) has a fourth adjustment hole (171). At least one of the third adjustment hole (162) and the fourth adjustment hole (171) is a strip hole extending along the third direction. The fourth adjustment hole (171) is connected to the third adjustment hole (162). And / or, The first connecting plate (16) and / or the frame (2) are rotatably connected with an adjusting screw (163), which is screwed into the second connecting plate (17); And / or, The frame (2) is provided with a first scale (22) extending along the second direction, the first scale (22) being able to mark the adjustment displacement of the first connecting plate (16); And / or, The first connecting plate (16) and / or the frame (2) are provided with a second scale (164) extending in a third direction, the second scale (164) being able to mark the adjustment displacement of the second connecting plate (17).

5. The rubber-cutting device according to claim 1, characterized in that, The cutting device includes a frame (2) that supports the cutting mechanism (1) and a transplanting mechanism (3). The transplanting mechanism (3) can drive the cutting mechanism (1) to move along a fourth direction to the target cutting position. The fourth direction is parallel to the width direction of the battery cell.

6. The rubber-cutting device according to claim 5, characterized in that, The transplanting mechanism (3) includes: Base (31); The third drive device (32) has a fixed part fixed to the base (31) and a telescopic part fixed to the frame (2). The first guide assembly (33) limits the guide movement of the frame (2) relative to the base (31) in the fourth direction.

7. The rubber-cutting device according to claim 1, characterized in that, The cutting device includes a cell positioning mechanism (4) capable of moving to the target cutting position; the cell positioning mechanism (4) includes: The bracket (41) is capable of supporting the battery cell from the bottom; The pressure block (42) is telescopically movable in a third direction to press against the top of the battery cell and fix the battery cell to the bracket (41).

8. The rubber-cutting device according to claim 7, characterized in that, The bracket (41) includes a bracket body (411) and a first elastic member (412) covering the bracket body (411). And / or, The bottom of the pressure block (42) is provided with a second elastic element (421). And / or, The cell positioning mechanism (4) includes a fourth driving device (43), which can drive the bracket (41) and the pressure block (42) to move as a whole to the target cutting position; And / or, The cell positioning mechanism (4) includes a fifth driving device (44), which drives the pressure block (42) to move along the third direction.

9. The rubber-cutting device according to any one of claims 1-8, characterized in that, The cutting device also includes a detection mechanism (5), which is used to detect whether the battery cell located at the target cutting position has side adhesive.

10. A battery cell, characterized in that, The surface of the cell is covered with side adhesive (7), which includes a side adhesive body and a tail adhesive. The side adhesive body is bonded to the first side of the cell, and the tail adhesive is bonded to the second side perpendicular to the first side. The bent edge (71) of the tail adhesive is cut by the adhesive cutting device according to any one of claims 1-9, so that the first side (72) and the second side (73) of the tail adhesive are disconnected; One of the first surface (72) and the second surface (73) is directly bonded to the second side surface, and the other is bonded to the first surface.

Images