Battery case channeling device and cylindrical battery case

Abstract

The utility model provides a battery shell channeling device, a channeling method and a cylindrical battery shell, and relates to the technical field of battery processing. The channeling device comprises a supporting mechanism, a downward pressing mechanism, an upward jacking mechanism and a hobbing cutter mechanism. The pressing mechanism is located at the top of the supporting mechanism, the jacking mechanism is located at the bottom of the supporting mechanism, and the hob mechanism is located on one side of the supporting mechanism. The supporting mechanism is used for containing a cylindrical battery shell to be machined. The pressing mechanism is in abutting contact with the top end of the cylindrical battery shell, the jacking mechanism is in abutting contact with the bottom end of the cylindrical battery shell, and the hob mechanism is in abutting contact with the side face of the cylindrical battery shell; the channeling device is configured in the mode that at the first machining time, the downward pressing mechanism moves downwards, the upward jacking mechanism moves upwards, and the hobbing cutter mechanism moves towards the axis position of the cylindrical battery shell. According to the battery shell channeling device, the machining precision of channeling fillets can be improved, and then the sealing performance of a cylindrical battery shell is improved.

Description

Technical Field

[0001] The present application relates to the field of battery processing technology, and in particular to a battery shell grooving device and a cylindrical battery shell. Background Art

[0002] Cylindrical battery shells usually need to change the shape of the battery shell by opening one or more raised grooves along the axial direction on the battery shell, thereby increasing the strength and stability of the battery.

[0003] However, in the grooving process of cylindrical battery shells in the related art, the grooving radius cannot be precisely controlled, which has an adverse effect on the sealing performance of the cylindrical battery shell. Summary of the Invention

[0004] The present application provides a battery shell grooving device and a cylindrical battery shell, which can solve the problem that the grooving radius cannot be accurately controlled, which adversely affects the sealing performance of the cylindrical battery shell.

[0005] The technical solution is as follows:

[0006] On the one hand, a battery shell groove rolling device is provided, the groove rolling device comprising: a support mechanism, a pressing mechanism, a lifting mechanism and a rolling cutter mechanism;

[0007] The pressing mechanism is located at the top of the supporting mechanism, the lifting mechanism is located at the bottom of the supporting mechanism, and the hob mechanism is located at one side of the supporting mechanism;

[0008] The support mechanism is used to accommodate the cylindrical battery shell to be processed;

[0009] The pressing mechanism is in contact with the top end of the cylindrical battery shell, the lifting mechanism is in contact with the bottom end of the cylindrical battery shell, and the rolling knife mechanism is in contact with the side of the cylindrical battery shell;

[0010] The groove rolling device is configured such that, during a first processing time, the pressing mechanism moves downward, the pushing mechanism moves upward, and the rolling cutter mechanism moves toward the axial position of the cylindrical battery shell.

[0011] In some embodiments, the grooving device is configured such that, during the first processing time, the pressing mechanism moves downward by a target pressing stroke d1, the lifting mechanism moves upward by a target lifting stroke d2, and the rolling cutter mechanism moves toward the axial position of the cylindrical battery shell by a target feed stroke d3.

[0012] In some embodiments, the grooving device is configured such that, during the first processing time, the pressing mechanism moves downward at a target pressing speed v1 for a target pressing stroke d1, the lifting mechanism moves upward at a target lifting speed v2 for a target lifting stroke d2, and the cutting mechanism moves toward the axial position of the cylindrical battery shell at a target feed speed v3 for a target feed stroke d3.

[0013] In some embodiments, wherein

[0014] The target pressing speed v1 < the target pushing speed v2 = the target feed speed v3;

[0015] The target pressing stroke d1 is less than the target lifting stroke d2.

[0016] In some embodiments, the lifting mechanism includes a bottom mold assembly, an upper lifting assembly, and a rotating assembly;

[0017] The bottom mold assembly includes an upper ejector sleeve and an upper ejector shaft, wherein the upper ejector sleeve is arranged in a vertical direction, the upper ejector shaft is located in the upper ejector sleeve, the upper ejector shaft can rotate relative to the upper ejector sleeve, and the upper ejector sleeve can drive the upper ejector shaft to move in the vertical direction;

[0018] The top end of the upper push shaft is provided with a bottom mold groove, and the bottom mold groove is used to accommodate the bottom end of the cylindrical battery shell; the bottom end of the upper push shaft is connected to the rotating assembly, and the rotating assembly is used to drive the upper push shaft to rotate;

[0019] The upper top sleeve is connected to the upper top assembly, and the upper top assembly is used to drive the upper top sleeve to move in a vertical direction.

[0020] In some embodiments, the bottom mold assembly further includes at least one first thrust bearing, and the upper ejector shaft is connected to the upper ejector sleeve via the at least one first thrust bearing.

[0021] In some embodiments, a bottom mold receiving groove is provided at the top end of the upper push shaft; a bottom mold is provided in the bottom mold receiving groove, the bottom mold mold is detachably connected to the bottom mold receiving groove, and the bottom mold groove is located on the bottom mold mold.

[0022] In some embodiments, the lifting assembly includes a lifting drive member, a lifting movable push block, a lifting roller and a lifting transmission frame;

[0023] The upper driving member is connected to the upper movable push block and is used to drive the upper movable push block to move in the horizontal direction; the top surface of the upper movable push block is provided with a slope structure;

[0024] The upper roller is rotatably connected to the bottom of the upper transmission frame, and the top of the upper transmission frame is connected to the upper shaft sleeve; the upper roller is in press contact with the slope structure;

[0025] When the upper driving member drives the upper movable push block to move horizontally, the upper roller rolls along the slope structure, the upper roller drives the upper transmission frame to move in the vertical direction, and the upper transmission frame drives the upper shaft sleeve to move in the vertical direction.

[0026] In some embodiments, the rotating assembly includes a rotating drive member, a driving wheel, a driven wheel, and a transmission belt;

[0027] The rotary drive member is connected to the support mechanism, and the axis of the rotary drive member is arranged in the vertical direction. The driving wheel is connected to the conveying shaft of the rotary drive member, the driven wheel is connected to the bottom end of the upper top shaft, and the transmission belt is connected to the driving wheel and the driven wheel respectively.

[0028] Axial edges of the driving wheel and the driven wheel are respectively provided with limiting flanges.

[0029] In some embodiments, the support mechanism includes a vertical frame, a top plate, a middle plate, and a bottom plate;

[0030] The top plate is located at the top of the vertical frame, the bottom plate is located at the bottom of the vertical frame, the middle plate is located in the middle of the vertical frame, and the top plate, the middle plate and the bottom plate are arranged in parallel and spaced apart; the cylindrical battery shell is located between the top plate and the middle plate.

[0031] In some embodiments, the pressing mechanism includes a top mold assembly and a pressing assembly;

[0032] The top mold assembly includes a lower pressing shaft sleeve and a lower pressing shaft, wherein the lower pressing shaft is located in the lower pressing shaft sleeve, and the lower pressing shaft can rotate relative to the lower pressing shaft sleeve, and the lower pressing shaft sleeve can drive the lower pressing shaft to move in a vertical direction;

[0033] The bottom end of the pressing shaft is provided with a top die head, and the top die head is used to insert the top end of the cylindrical battery shell; the pressing shaft sleeve is connected to the pressing assembly, and the pressing assembly is used to drive the pressing shaft sleeve to move in the vertical direction.

[0034] In some embodiments, the hob mechanism includes a hob member, a tool holder assembly, and a cam feed assembly;

[0035] The hob is connected to the tool holder assembly, and the hob is in contact with the side of the cylindrical battery shell; the tool holder assembly is movably arranged on the support mechanism;

[0036] The cam feeding assembly is fixedly arranged on the supporting mechanism, the cam feeding assembly is in contact with the tool holder assembly, and the cam feeding assembly is used to drive the tool holder assembly to move horizontally.

[0037] On the other hand, a cylindrical battery shell is provided, which is processed and formed using the battery shell grooving device described in the present application.

[0038] The beneficial effects of the technical solution provided by this application include at least:

[0039] The battery shell grooving device of the present application adopts a support structure to realize the integration of a downward pressure mechanism, an upward pressure mechanism and a rolling cutter mechanism. The downward pressure mechanism and the upward pressure mechanism can press and fix the cylindrical battery shell to be processed on the support mechanism, and the rolling cutter mechanism presses and contacts the side surface of the cylindrical battery shell along one side in the horizontal direction. When working, the downward pressure mechanism, the upward pressure mechanism and the rolling cutter mechanism can act simultaneously during the first working time. The downward movement of the downward pressure mechanism and the upward movement of the upward pressure mechanism provide axial compression force on the cylindrical battery shell. The rolling cutter mechanism moves toward the axial position of the cylindrical battery shell to provide a rolling groove forming force perpendicular to the axis of the cylindrical battery shell. The three mechanisms work together to realize the rolling groove processing of the cylindrical battery shell, which is conducive to improving the processing accuracy of the rolling groove fillet, and thus improving the sealing performance of the cylindrical battery shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 It is a structural schematic diagram of the groove rolling device provided in an embodiment of the present application;

[0042] Figure 2 Schematic diagram of the rolling groove structure of the cylindrical battery shell provided in an embodiment of the present application;

[0043] Figure 3 This is a schematic structural diagram of the lifting mechanism provided in an embodiment of the present application;

[0044] Figure 4 This is a cross-sectional view of the structure of the lifting mechanism provided in an embodiment of the present application;

[0045] Figure 5 This is a cross-sectional view of the structure of the upper ejector shaft and the upper ejector sleeve provided in an embodiment of the present application;

[0046] Figure 6 This is a schematic structural diagram of the top assembly provided in an embodiment of the present application;

[0047] Figure 7 is a schematic structural diagram of a rotating assembly provided in an embodiment of the present application;

[0048] Figure 8 is a structural schematic diagram of the pressing mechanism provided in an embodiment of the present application;

[0049] Figure 9 yes Figure 8 A partial enlarged view of the middle part;

[0050] Figure 10 Schematic diagram of the structure of the hob mechanism provided in an embodiment of the present application;

[0051] Figure 11 It is a flow chart of the grooving method provided in an embodiment of the present application.

[0052] The reference numerals in the figures represent respectively:

[0053] 100. Cylindrical battery shell;

[0054] 1. Support mechanism;

[0055] 11. Vertical frame; 111. Vertical support plate; 112. First slide rail; 12. Top plate; 13. Middle plate; 131. Second slide rail; 14. Bottom plate;

[0056] 2. Pressing mechanism;

[0057] 21. Top die assembly; 211. Lower pressing shaft sleeve; 2111. Sleeve accommodating portion; 212. Lower pressing shaft; 2121. Top die head; 21211. Tab avoidance groove; 213. Second thrust bearing;

[0058] 22. Press down the assembly;

[0059] 23. Top mold sheath;

[0060] 3. Elevating mechanism;

[0061] 31. Bottom mold assembly; 311. Upper ejector sleeve; 3111. First step; 3112. Second step; 312. Upper ejector shaft; 3121. Bottom mold groove; 3122. First shoulder; 3123. Locking nut; 3124. Bottom mold receiving groove; 31241. Vertical receiving groove; 313. First thrust bearing; 314. Bottom mold; 3141. Positioning shoulder; 3142. Flexible abutment member;

[0062] 32. Top assembly; 321. Top drive member; 322. Top movable push block; 3221. Slope structure; 323. Top roller; 324. Top transmission frame; 3241. Bottom support member; 32411. Roller support structure; 3242. Movable frame side plate; 3243. First slider; 325. Horizontal track plate;

[0063] 33. Rotating assembly; 331. Rotating driving member; 332. Driving wheel; 3321. Limiting flange; 333. Driven wheel; 334. Transmission belt;

[0064] 4. Hob mechanism;

[0065] 41. Hob parts;

[0066] 42. Tool holder assembly; 421. Horizontal tool holder plate; 4211. Second slide; 422. Feed roller; 423. Vertical tool holder plate; 4231. Second tool holder; 424. Second elastic member;

[0067] 43. Cam feed assembly; 431. Hob drive component; 432. Cam component. DETAILED DESCRIPTION

[0068] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0069] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0070] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art.

[0071] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0072] On the one hand, combined with Figure 1 As shown, this embodiment provides a cylindrical battery shell grooving device, which includes: a support mechanism 1, a pressing mechanism 2, a lifting mechanism 3 and a rolling cutter mechanism 4.

[0073] The pressing mechanism 2 is located at the top of the supporting mechanism 1, the lifting mechanism 3 is located at the bottom of the supporting mechanism 1, and the hob mechanism 4 is located on one side of the supporting mechanism 1; the supporting mechanism 1 is used to accommodate the cylindrical battery shell 100 to be processed.

[0074] The pressing mechanism 2 is in contact with the top end of the cylindrical battery shell 100 , the lifting mechanism 3 is in contact with the bottom end of the cylindrical battery shell 100 , and the rolling cutter mechanism 4 is in contact with the side of the cylindrical battery shell 100 .

[0075] The groove rolling device is configured such that, during the first processing time, the pressing mechanism 2 moves downward, the lifting mechanism 3 moves upward, and the rolling cutter mechanism 4 moves toward the axial position of the cylindrical battery shell 100 .

[0076] The cylindrical battery shell grooving device of this embodiment adopts a support structure 1 to realize the integration of a downward pressure mechanism 2, an upward pressure mechanism 3 and a rolling cutter mechanism 4. The downward pressure mechanism 2 and the upward pressure mechanism 3 can press and fix the cylindrical battery shell 100 to be processed on the support mechanism 1, and the rolling cutter mechanism 4 is pressed and contacted with the side surface of the cylindrical battery shell 100 along one side in the horizontal direction. When working, the downward pressure mechanism 2, the upward pressure mechanism 3 and the rolling cutter mechanism 4 can act simultaneously during the first working time. The downward movement of the downward pressure mechanism 2 and the upward movement of the upward pressure mechanism 3 provide axial compression force on the cylindrical battery shell 100, and the rolling cutter mechanism 4 moves toward the axial position of the cylindrical battery shell 100 to provide a rolling groove forming force perpendicular to the axis of the cylindrical battery shell 100. The three mechanisms work together to realize the rolling groove processing of the cylindrical battery shell 100, which is beneficial to improve the processing accuracy of the rolling groove fillet, thereby improving the sealing performance of the cylindrical battery shell.

[0077] The lifting mechanism 3 in this embodiment can effectively compensate for the wall thickness of the groove opening. In the related art, the groove opening does not move upward during the rolling process, and cannot feed the battery shell material below the groove opening upward to compensate for the groove opening. Therefore, the lifting mechanism 3 in this embodiment can better compensate for the groove opening and assist in the rounded corner forming of the groove.

[0078] In some possible implementations, the grooves of the cylindrical battery case 100 are as follows: Figure 2As shown in the figure, the fillet r1, fillet r2 and fillet R1 are the three key parameters of the grooving. In fact, the size of the fillet r1 depends on the edge curvature of the hob, which can be adjusted by selecting hobs of different sizes. The fillet R1 depends on the installation angle of the hob, which can be adjusted by adjusting the installation angle of the hob. However, the fillet r2 is indirectly formed, and accurate control cannot be achieved by only controlling parameters such as the hob size and installation angle. There are problems of radius processing fluctuation and poor consistency.

[0079] In this embodiment, the pressing mechanism 2, the pushing mechanism 3 and the rolling cutter mechanism 4 can act simultaneously to provide axial compression force and radial grooving forming force to the cylindrical battery shell 100, thereby realizing the grooving processing of the cylindrical battery shell 100. The three actions act simultaneously to achieve the processing accuracy of the grooving fillet (for example, the fillet r2), thereby improving the sealing performance of the cylindrical battery shell 100.

[0080] In some embodiments, the grooving device is configured such that, during the first processing time, the pressing mechanism 2 moves downward by a target pressing stroke d1, the lifting mechanism 3 moves upward by a target lifting stroke d2, and the rolling cutter mechanism 4 moves toward the axial position of the cylindrical battery shell 100 by a target feed stroke d3.

[0081] In this embodiment, the target pressing stroke d1 of the pressing mechanism 2 and the target lifting stroke d2 of the lifting mechanism 3 have a certain influence on the radii of the rolling grooves. Thus, by controlling the action strokes of the pressing mechanism 2 and the lifting mechanism 3, the processing accuracy of the radii of the rolling grooves can be improved.

[0082] Exemplarily, the target pressing stroke d1 , the target lifting stroke d2 , and the target feed stroke d3 are all greater than zero.

[0083] In some embodiments, the grooving device is configured such that, during a first processing time, the pressing mechanism 2 moves downward at a target pressing speed v1 for a target pressing stroke d1, the lifting mechanism 3 moves upward at a target lifting speed v2 for a target lifting stroke d2, and the cutting mechanism 4 moves toward the axial position of the cylindrical battery shell 100 at a target feed speed v3 for a target feed stroke d3.

[0084] In this embodiment, in addition to the target pressing stroke d1 of the pressing mechanism 2 and the target pushing stroke d2 of the pushing mechanism 3 having a certain influence on the rolling groove radius, the target pressing speed v1 of the pressing mechanism 2, the target pushing speed v2 of the pushing mechanism 3 and the target feed speed v3 of the rolling cutter mechanism 4 will also have an impact on the rolling radius. Therefore, by controlling the action stroke and speed of the pressing mechanism 2 and the pushing mechanism 3, the processing accuracy of the rolling groove radius can be improved.

[0085] Exemplarily, the target pressing speed v1, the target pushing speed v2, and the target feed speed v3 are all greater than zero.

[0086] In some embodiments, the target pressing speed v1 is less than the target lifting speed v2 and the target feed speed v3 is equal to the target pressing stroke d1 and the target lifting stroke d2.

[0087] In this embodiment, the upper pushing mechanism 3 and the lower pressing mechanism 2 act together on the cylindrical battery shell 100. When v1≈v2=v3, the radius of the rolling groove corner is about 0.6mm. When v1>v2=v3, the radius of the rolling groove corner decreases. When v1<v2=v3, the radius of the rolling groove corner increases.

[0088] When d1=d2, the radius of the rolling groove corner is about 0.65mm. When d1>d2, the radius of the rolling groove corner decreases. When d1<d2, the radius of the rolling groove corner increases.

[0089] Therefore, when the action speed and action stroke meet the above requirements, the grooving device can achieve a stable grooving corner radius and meet the process requirements.

[0090] In some possible implementations, the target pressing speed v1 = 1.45 mm / s, the target pushing speed v2 = target feed speed v3 = 1.65 mm / s; the target pressing stroke d1 = 0.9 mm, and the target pushing stroke d2 = 1.1 mm.

[0091] Combine Figure 3 、 Figure 4 and Figure 5 As shown, in some embodiments, the lifting mechanism 3 includes a bottom mold assembly 31, an upper lift assembly 32 and a rotating assembly 33. The bottom mold assembly 31 includes an upper lift sleeve 311 and an upper lift shaft 312. The upper lift sleeve 311 is arranged in the vertical direction. The upper lift shaft 312 is located in the upper lift sleeve 311. The upper lift shaft 312 can rotate relative to the upper lift sleeve 311, and the upper lift sleeve 311 can drive the upper lift shaft 312 to move in the vertical direction. The top of the upper lift shaft 312 is provided with a bottom mold groove 3121, and the bottom mold groove 3121 is used to accommodate the bottom end of the cylindrical battery shell 100. The bottom end of the upper lift shaft 312 is connected to the rotating assembly 33, and the rotating assembly 33 is used to drive the upper lift shaft 312 to rotate. The upper lift sleeve 311 is connected to the upper lift assembly 32, and the upper lift assembly 32 is used to drive the upper lift sleeve 311 to move in the vertical direction.

[0092] Through the above arrangement, the lifting mechanism 3 can utilize the bottom mold groove 3121 at the top of the lifting shaft 312 to accommodate the cylindrical battery shell 100. On the one hand, the lifting shaft 312 can be driven to rotate around the vertical axis by the rotating component 33, and on the other hand, it can be driven to move in the vertical direction by the lifting shaft sleeve 311 to realize the lifting action. The lifting shaft sleeve 311 is connected to the lifting component 32, and the vertical movement power is provided by the lifting component 32.

[0093] Combine Figure 3 、 Figure 4and Figure 5 As shown, in some embodiments, the bottom mold assembly 31 further includes at least one first thrust bearing 313 , and the upper top shaft 312 is connected to the upper top shaft sleeve 311 through the at least one first thrust bearing 313 .

[0094] In this embodiment, at least one first thrust bearing 313 can be used to achieve the rotational connection between the upper top shaft 312 and the upper top sleeve 311, and the upper top sleeve 311 can use the first thrust bearing 313 to provide a driving force in the vertical direction to the upper top shaft 312.

[0095] In some possible implementations, reference Figure 5 As shown, the top of the upper top shaft 312 is provided with a first shoulder 3122 with a thrust surface facing downward, the inner wall of the upper top shaft sleeve 311 is provided with a first step portion 3111 with a thrust surface facing upward, and at least one first thrust bearing 313 is provided between the first shoulder 3122 and the first step portion 3111. The top surface of the inner ring of the at least one first thrust bearing 313 abuts against the first shoulder 3122, and the bottom surface of the outer ring abuts against the first step portion 3111.

[0096] A locking nut 3123 is provided at the bottom of the upper top shaft 312, and the locking nut 3123 is threadedly connected to the upper top shaft 312. The inner wall of the bottom end of the upper top sleeve 311 is provided with a second step portion 3112 with a thrust surface facing downward. At least one first thrust bearing 313 is provided between the second step portion 3112 and the locking nut 3123. The bottom surface of the inner ring of the at least one first thrust bearing 313 abuts against the locking nut 3123, and the top surface of the outer ring abuts against the second step portion 3112.

[0097] Through the above arrangement, this embodiment realizes the rotational connection between the upper top shaft 312 and the upper top sleeve 311, and the upper top sleeve 311 can use the first thrust bearing 313 to provide a driving force in the vertical direction to the upper top shaft 312, so the working reliability is high.

[0098] Combine Figure 4 and Figure 5 As shown, in some embodiments, a bottom mold receiving groove 3124 is provided at the top of the upper push shaft 312; a bottom mold mold 314 is provided in the bottom mold receiving groove 3124, and the bottom mold mold 314 is detachably connected to the bottom mold receiving groove 3124, and the bottom mold groove 3121 is located on the bottom mold mold 314.

[0099] Through the above arrangement, a bottom mold accommodating groove 3124 is opened at the top of the upper shaft 312 to place the bottom mold mold 314, and a bottom mold groove 3121 for accommodating the cylindrical battery shell 100 is opened on the bottom mold mold 314. The bottom mold mold 314 and the bottom mold accommodating groove 3124 are detachably connected. By disassembling and replacing different bottom mold molds 314, the accommodation limit of cylindrical battery shells 100 of different sizes can be achieved.

[0100] In some possible implementations, a positioning shoulder 3141 is provided at the bottom end of the bottom mold 314 , and the positioning shoulder 3141 is connected to the edge of the bottom mold accommodating groove 3124 to achieve a positioning connection between the bottom mold 314 and the bottom mold accommodating groove 3124 .

[0101] In some possible implementations, a flexible push-up member 3142 is provided in the middle of the bottom mold 314. The top end of the flexible push-up member 3142 protrudes upward into the bottom mold groove 3121, and the bottom end of the flexible push-up member 3142 downwardly penetrates the bottom mold 314. A first elastic member (not shown) is provided at the bottom end of the flexible push-up member 3142. The first elastic member is used to provide elastic support for the flexible push-up member 3142, and is used to push the cylindrical battery shell 100 upward out of the bottom mold groove 3121 after the groove is rolled. A vertical accommodating groove 31241 is provided at the bottom of the bottom mold accommodating groove 3124, and the first elastic member is accommodated in the vertical accommodating groove 31241.

[0102] Combine Figure 4 and Figure 6 As shown, in some embodiments, the upper lift assembly 32 includes an upper lift driving member 321 , an upper lift movable push block 322 , an upper lift roller 323 and an upper lift transmission frame 324 .

[0103] The upper driving member 321 is connected to the upper movable pushing block 322, and is used to drive the upper movable pushing block 322 to move in the horizontal direction; the top surface of the upper movable pushing block 322 is provided with a slope structure 3221; the upper roller 323 is rotatably connected to the bottom of the upper transmission frame 324, and the top of the upper transmission frame 324 is connected to the upper shaft sleeve 311; the upper roller 323 is in pressure contact with the slope structure 3221.

[0104] When the upper driving member 321 drives the upper movable pushing block 322 to move horizontally, the upper roller 323 rolls along the slope structure 3221, the upper roller 323 drives the upper transmission frame 324 to move in the vertical direction, and the upper transmission frame 324 drives the upper shaft sleeve 311 to move in the vertical direction.

[0105] Through the above arrangement, the upper lifting component 32 utilizes the upper lifting drive member 321 to generate a horizontal force, which pushes the upper lifting movable push block 322 to move horizontally, and the slope structure 3221 of the upper lifting movable push block 322 moves relative to the upper lifting roller 323. Since the heights of different positions of the slope structure 3221 are different, the upper lifting roller 323 produces height fluctuations while rolling along the slope structure 3221, and then the upper lifting roller 323 drives the upper lifting transmission frame 324 to move in the vertical direction, and the upper lifting transmission frame 324 drives the upper lifting shaft sleeve 311, and the upper lifting shaft sleeve 311 drives the upper lifting shaft 312 to move in the vertical direction, thereby realizing the upper lifting action of the upper lifting mechanism 3.

[0106] In some possible implementations, reference Figure 6 As shown, the upper transmission frame 324 includes a bottom support member 3241 and two movable frame side plates 3242. The two movable frame side plates 3242 are arranged in parallel and spaced apart along the horizontal movement direction of the upper movable push block 322. The two ends of the bottom support member 3241 are respectively connected to the two movable frame side plates 3242. A downwardly protruding roller support structure 32411 is provided in the middle of the bottom support member 3241. The roller support structure 32411 is used to rotatably connect to the upper roller 323.

[0107] A first slider 3243 is provided on the outer side of the two movable frame side plates 3242, and a first slide rail 112 extending in the vertical direction is provided on the support mechanism 1. The cooperation between the first slider 3243 and the first slide rail 112 is conducive to improving the movement stability and reliability of the upper movable frame in the vertical direction.

[0108] Combine Figure 7 As shown, in some embodiments, the rotating assembly 33 includes a rotating driving member 331 , a driving pulley 332 , a driven pulley 333 and a transmission belt 334 .

[0109] The rotating driving member 331 is connected to the supporting mechanism 1, and the axis of the rotating driving member 331 is arranged in the vertical direction. The driving wheel 332 is connected to the conveying shaft of the rotating driving member 331, the driven wheel 333 is connected to the bottom end of the upper top shaft 312, and the transmission belt 334 is respectively connected to the driving wheel 332 and the driven wheel 333; the axial edges of the driving wheel 332 and the driven wheel 333 are respectively provided with a limiting flange 3321.

[0110] In this embodiment, the rotating assembly 33 utilizes a rotating drive member 331 to drive the driving pulley 332 to rotate. The driving pulley 332 then drives the driven pulley 333 to rotate via a transmission belt 334. The driven pulley 333 is sleeved onto the bottom end of the upper top shaft 312, thereby intentionally driving the upper top shaft 312 to rotate. Because the driven pulley 333 needs to move vertically with the upper top shaft 312, a transmission belt 334 is used to connect the driving pulley 332 and the driven pulley 333. The transmission belt 334 is flexible, allowing power transmission to continue even when the driven pulley 333 and the driving pulley 332 are not on the same horizontal plane. Furthermore, the axial edges of the driving pulley 332 and the driven pulley 333, i.e., the top and bottom edges, are respectively provided with retaining flanges 3321. The retaining flanges 3321 can secure the transmission belt 334 within the working areas of the driving pulley 332 and the driven pulley 333, preventing the transmission belt 334 from falling off.

[0111] Adopting belt drive as the transmission mode of the rotating assembly 33 can not only meet the rotation requirement of the upper top shaft 312, but also be compatible with the vertical movement requirement of the upper top shaft 312. Compared with other transmission modes, it has a simpler structure and higher reliability.

[0112] In some possible implementations, the transmission belt 334 is a toothed belt, and correspondingly, the driving wheel 332 and the driven wheel 333 are both toothed wheels, which is beneficial to improving the transmission efficiency and transmission accuracy of the rotating component 33.

[0113] Combine Figures 1 to 7 As shown, in some embodiments, the support mechanism 1 includes a vertical frame 11, a top plate 12, a middle plate 13, and a bottom plate 14. The top plate 12 is located at the top of the vertical frame 11, the bottom plate 14 is located at the bottom of the vertical frame 11, and the middle plate 13 is located in the middle of the vertical frame 11. The top plate 12, the middle plate 13, and the bottom plate 14 are arranged in parallel and spaced apart; the cylindrical battery case 100 is located between the top plate 12 and the middle plate 13.

[0114] Through the above arrangement, the support mechanism 1 is a layered layout, the top can be used to support the pressing mechanism 2, the bottom can be used to support the lifting mechanism 3, and the middle can be used to support the rolling cutter mechanism 4. The spatial layout is more reasonable, so that the pressing mechanism 2, the lifting mechanism 3 and the rolling cutter mechanism 4 can all process the cylindrical battery shell 100 at the same time, realize the precise control of the groove radius, and improve the sealing performance of the cylindrical battery shell 100.

[0115] For example, refer to Figure 3 As shown, the vertical frame 11 includes two vertical support plates 111 arranged in parallel and spaced apart, and the top plate 12 , the middle plate 13 and the bottom plate 14 are respectively arranged between the two vertical support plates 111 .

[0116] For another example, see Figure 1 As shown, the downward pressing mechanism 2 is connected to the top plate 12, the hob mechanism 4 is connected to the middle plate 13, and the rotating assembly 33 is connected to the bottom plate 14. The upper assembly 32 is connected to the two vertical support plates 111 via a horizontal track plate 325. The upper movable push block 322 of the upper assembly 32 is movably arranged within the horizontal track plate 325. The first slide rails 112 are arranged on opposite sides of the two vertical support plates 111.

[0117] Combine Figure 1 and Figure 8 As shown, in some embodiments, the pressing mechanism 2 includes a top mold assembly 21 and a pressing assembly 22. The top mold assembly 21 includes a pressing sleeve 211 and a pressing shaft 212. The pressing shaft 212 is located in the pressing sleeve 211. The pressing shaft 212 can rotate relative to the pressing sleeve 211, and the pressing sleeve 211 can drive the pressing shaft 212 to move in the vertical direction.

[0118] The bottom end of the pressing shaft 212 is provided with a top die head 2121, which is used to insert the top of the cylindrical battery shell 100; the pressing sleeve 211 is connected to the pressing assembly 22, and the pressing assembly 22 is used to drive the pressing sleeve 211 to move in the vertical direction.

[0119] Through the above arrangement, the pressing mechanism 2 can use the top mold assembly 21 to press the top of the cylindrical battery shell 100, and the top mold head 2121 is inserted into the inner side of the top of the cylindrical battery shell 100, which can not only provide downward axial compression force on the cylindrical battery shell 100, but also use the top mold head 2121 to support and shape the top of the cylindrical battery shell 100 from the inside out.

[0120] The lower pressure shaft 212 is rotatably connected to the lower pressure shaft sleeve 211, so that when the cylindrical battery shell 100 rotates, the lower pressure shaft 212 can rotate with the cylindrical battery shell 100. The lower pressure shaft sleeve 211 is connected to the lower pressure assembly 22. The lower pressure assembly 22 can drive the lower pressure shaft sleeve 211 to move in the vertical direction. The lower pressure shaft sleeve 211 drives the lower pressure shaft 212 to move in the vertical direction, thereby realizing the downward pressure on the cylindrical battery shell 100.

[0121] Combine Figure 8 and Figure 9 As shown, in some implementations, a sleeve accommodating portion 2111 is provided at the bottom end of the lower pressure sleeve 211, the lower pressure shaft 212 is inserted into the sleeve accommodating portion 2111, and there is at least one second thrust bearing 213 between the lower pressure shaft 212 and the sleeve accommodating portion 2111. Through at least one second thrust bearing 213, the lower pressure shaft 212 can be rotatably connected to the lower pressure sleeve 211 and can move in the vertical direction with the lower pressure sleeve 211.

[0122] In some implementations, reference Figure 8 and Figure 9 As shown, the pressing mechanism 2 further includes a top mold sleeve 23 , which is fixedly disposed on the bottom surface of the top plate 12 , and the top mold assembly 21 is located in the top mold sleeve 23 .

[0123] Combine Figure 9 As shown, in some implementations, a tab avoidance groove 21211 is provided in the middle of the top die head 2121 , and the tab avoidance groove 21211 is used to avoid the tab structure extending from the top of the cylindrical battery cell in the cylindrical battery shell 100 .

[0124] Combined diagram Figure 1 and Figure 10 As shown, in some embodiments, the rolling cutter mechanism 4 includes a rolling cutter member 41, a cutter holder assembly 42, and a cam feed assembly 43. The rolling cutter member 41 is connected to the cutter holder assembly 42, and the rolling cutter member 41 is pressed against the side of the cylindrical battery shell 100; the cutter holder assembly 42 is movably arranged on the support mechanism 1; the cam feed assembly 43 is fixedly arranged on the support mechanism 1, and the cam feed assembly 43 is in contact with the cutter holder assembly 42, and is used to drive the cutter holder assembly 42 to move horizontally.

[0125] Through the above arrangement, the hob mechanism 4 can utilize the cam feed assembly 43 to drive the tool holder assembly 42 to move in the horizontal direction, and the tool holder assembly 42 drives the hob member 41 to move in the horizontal direction, thereby realizing the feed action of the hob mechanism 4.

[0126] Combine Figure 10 As shown, in some possible implementations, the cam feeding assembly 43 is located on the middle plate 13 and at the end of the middle plate 13 away from the cylindrical battery case 100 .

[0127] The cam feed assembly 43 includes a roller cutter drive 431 and a cam member 432. The roller cutter drive 431 is fixedly arranged at the bottom of the middle plate 13, and the cam member 432 is located at the top of the middle plate 13. The output shaft of the roller cutter drive 431 passes through the middle plate 13 in an upward direction and is connected to the cam member 432.

[0128] The tool holder assembly 42 includes a horizontal tool holder plate 421, a feed roller 422, and a vertical tool holder plate 423. The horizontal tool holder plate 421 is arranged parallel to the top of the middle plate 13 and can move horizontally along the top surface of the middle plate 13. The horizontal tool holder plate 421 is located between the cam member 432 and the cylindrical battery shell 100. The feed roller 422 is rotatably arranged near one end of the cam member 432. The feed roller 422 abuts the cam member 432. When the cam member 432 rotates, the feed roller 422 is pushed horizontally.

[0129] Exemplarily, at least one second elastic member 424 is provided between the horizontal tool holder plate 421 and the middle plate 13. By means of the at least one second elastic member 424, the horizontal tool holder plate 421 is subjected to elastic force and is in tight contact with the cam member 432, and when the pushing force of the cam member 432 is reduced, the horizontal tool holder plate 421 is pulled to reset.

[0130] Another example is that the bottom surface of the horizontal tool holder plate 421 is provided with a second slider 4211, and the top surface of the middle plate 13 is provided with a second slide rail 131 facing the cylindrical battery shell 100 and the cam member respectively. The second slider 4211 is slidably arranged on the second slide rail 131, which is beneficial to the reliability and stability of the horizontal tool holder plate 421 moving in the horizontal direction, thereby improving the feeding accuracy of the rolling cutter mechanism 4.

[0131] The vertical tool holder plate 423 is located at one end of the horizontal tool holder plate 421 near the cylindrical battery shell 100. The vertical tool holder plate 423 is provided with a sub-tool holder 4231 that can be adjusted in the vertical direction. The sub-tool holder 4231 is close to the cylindrical battery shell 100, and the rolling cutter 41 is located on the sub-tool holder 4231. The vertical tool holder plate 423 and the sub-tool holder 4231 can be used to adjust the vertical height of the rolling cutter 41 to meet the different rolling groove requirements of the cylindrical battery shell 100.

[0132] On the other hand, combined Figure 11As shown, this embodiment provides a grooving method, which is applicable to the cylindrical battery shell grooving device of the present application, and the grooving method includes:

[0133] Step 1: Place the cylindrical battery shell 100 to be processed on the support mechanism 1.

[0134] Step 2: Control the pressing mechanism 2 to move downward and control the lifting mechanism 3 to move upward until the pressing mechanism 2 presses against the top of the cylindrical battery shell 100 and the lifting mechanism 3 presses against the bottom of the cylindrical battery shell 100.

[0135] Step 3: Control the rolling cutter mechanism 4 to move horizontally until the rolling cutter mechanism 4 presses against the side surface of the cylindrical battery shell 100 .

[0136] Step 4: During the first processing time, control the pressing mechanism 2 to move downward, the lifting mechanism 3 to move upward, and the rolling cutter mechanism 4 to move horizontally along the axis of the cylindrical battery shell 100. The three actions are performed simultaneously until the grooving of the cylindrical battery shell 100 is completed.

[0137] The grooving method of this embodiment adopts the cylindrical battery shell grooving device of this application, and has all the beneficial technical effects of all the embodiments herein. The pressing mechanism 2, the lifting mechanism 3, and the rolling cutter mechanism 4 can be controlled to act simultaneously during the first working time. The pressing mechanism 2 moves downward and the lifting mechanism 3 moves upward to provide axial compression force on the cylindrical battery shell 100. The rolling cutter mechanism 4 moves toward the axial position of the cylindrical battery shell 100 to provide a grooving forming force to achieve the grooving of the cylindrical battery shell 100. The three actions act simultaneously, which is conducive to improving the processing accuracy of the grooving fillet, thereby improving the sealing performance of the cylindrical battery shell 100.

[0138] In some embodiments, step four further includes:

[0139] During the first processing time, the pressing mechanism 2 is controlled to move downward by the target pressing stroke d1, the lifting mechanism 3 is controlled to move upward by the target lifting stroke d2, and the rolling cutter mechanism 4 is controlled to move toward the axial position of the cylindrical battery shell 100 by the target feed stroke d3; wherein, the target pressing stroke d1 is less than the target lifting stroke d2.

[0140] In this embodiment, the machining accuracy of the groove fillet is further improved by controlling the movement strokes of the pressing mechanism 2 and the pushing mechanism 3 .

[0141] In some embodiments, step four further includes:

[0142] During the first processing time, the pressing mechanism 2 is controlled to move downward at a target pressing speed v1 for a target pressing stroke d1, the lifting mechanism 3 is controlled to move upward at a target lifting speed v2 for a target lifting stroke d2, and the rolling cutter mechanism 4 is controlled to move toward the axial position of the cylindrical battery shell 100 at a target feed speed v3 for a target feed stroke d3; wherein, the target pressing speed v1 < target lifting speed v2 = target feed speed v3; the target pressing stroke d1 < target lifting stroke d2.

[0143] In this embodiment, the machining accuracy of the groove fillet can be further improved by controlling the movement stroke and speed of the pressing mechanism 2, the lifting mechanism 3 and the hob mechanism 4.

[0144] On the other hand, this embodiment provides a cylindrical battery shell, which is processed and formed using the grooving device of the present application, or the grooving method of the present application.

[0145] The cylindrical battery shell of this embodiment adopts the grooving device or grooving method of this application, and has all the beneficial technical effects of all the embodiments in this article.

[0146] It should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0147] 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 technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0148] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0149] In the description of this specification, reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.

[0150] The above description is merely an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery shell groove rolling device, characterized in that: The grooving device comprises: a supporting mechanism (1), a pressing mechanism (2), a lifting mechanism (3) and a rolling cutter mechanism (4); The pressing mechanism (2) is located at the top of the supporting mechanism (1), the lifting mechanism (3) is located at the bottom of the supporting mechanism (1), and the hob mechanism (4) is located on one side of the supporting mechanism (1); The support mechanism (1) is used to accommodate a cylindrical battery shell (100) to be processed; The pressing mechanism (2) is in pressing contact with the top end of the cylindrical battery shell (100), the lifting mechanism (3) is in pressing contact with the bottom end of the cylindrical battery shell (100), and the rolling knife mechanism (4) is in pressing contact with the side of the cylindrical battery shell (100); The groove rolling device is configured such that, during a first processing time, the pressing mechanism (2) moves downward, the lifting mechanism (3) moves upward, and the rolling cutter mechanism (4) moves toward the axial position of the cylindrical battery shell (100).

2. The battery shell groove rolling device according to claim 1, characterized in that: The groove rolling device is configured such that, during a first processing time, the pressing mechanism (2) moves downwards by a target pressing stroke d1, the lifting mechanism (3) moves upwards by a target lifting stroke d2, and the cutting mechanism (4) moves towards the axial position of the cylindrical battery shell (100) by a target feed stroke d3.

3. The battery shell groove rolling device according to claim 2, characterized in that: The grooving device is configured such that, during a first processing time, the pressing mechanism (2) moves downward at a target pressing speed v1 for a target pressing stroke d1, the lifting mechanism (3) moves upward at a target lifting speed v2 for a target lifting stroke d2, and the cutting mechanism (4) moves toward the axial position of the cylindrical battery shell (100) at a target feeding speed v3 for a target feeding stroke d3.

4. The battery shell groove rolling device according to claim 3, characterized in that: in, The target pressing speed v1 < the target pushing speed v2 = the target feed speed v3; The target pressing stroke d1 is less than the target lifting stroke d2.

5. The battery shell groove rolling device according to any one of claims 1 to 4, characterized in that: The lifting mechanism (3) comprises a bottom mold assembly (31), a lifting assembly (32) and a rotating assembly (33); The bottom mold assembly (31) includes an upper top shaft sleeve (311) and an upper top shaft (312), wherein the upper top shaft sleeve (311) is arranged in a vertical direction, and the upper top shaft (312) is located in the upper top shaft sleeve (311), and the upper top shaft (312) can rotate relative to the upper top shaft sleeve (311), and the upper top shaft sleeve (311) can drive the upper top shaft (312) to move in a vertical direction; The top end of the upper top shaft (312) is provided with a bottom mold groove (3121), and the bottom mold groove (3121) is used to accommodate the bottom end of the cylindrical battery shell (100); the bottom end of the upper top shaft (312) is connected to the rotating assembly (33), and the rotating assembly (33) is used to drive the upper top shaft (312) to rotate; The upper top sleeve (311) is connected to the upper top assembly (32), and the upper top assembly (32) is used to drive the upper top sleeve (311) to move in a vertical direction.

6. The battery shell groove rolling device according to claim 5, characterized in that: The bottom mold assembly (31) further includes at least one first thrust bearing (313), and the upper top shaft (312) is connected to the upper top shaft sleeve (311) via the at least one first thrust bearing (313).

7. The battery shell groove rolling device according to claim 5, characterized in that: A bottom mold receiving groove (3124) is provided at the top end of the upper ejector shaft (312); a bottom mold (314) is provided in the bottom mold receiving groove (3124); the bottom mold (314) is detachably connected to the bottom mold receiving groove (3124); and the bottom mold groove (3121) is located on the bottom mold (314).

8. The battery shell groove rolling device according to claim 5, characterized in that: The upper push assembly (32) includes an upper push driving member (321), an upper push movable push block (322), an upper push roller (323) and an upper push transmission frame (324); The upper driving member (321) is connected to the upper movable push block (322) and is used to drive the upper movable push block (322) to move in a horizontal direction; the top surface of the upper movable push block (322) is provided with a slope structure (3221); The upper roller (323) is rotatably connected to the bottom of the upper transmission frame (324), and the top of the upper transmission frame (324) is connected to the upper shaft sleeve (311); the upper roller (323) is in pressing contact with the slope structure (3221); When the top driving member (321) drives the top movable push block (322) to move horizontally, the top roller (323) rolls along the slope structure (3221), the top roller (323) drives the top transmission frame (324) to move in the vertical direction, and the top transmission frame (324) drives the top shaft sleeve (311) to move in the vertical direction.

9. The battery shell groove rolling device according to claim 5, characterized in that: The rotating assembly (33) includes a rotating driving member (331), a driving wheel (332), a driven wheel (333) and a transmission belt (334); The rotary drive member (331) is connected to the support mechanism (1), and the axis of the rotary drive member (331) is arranged in the vertical direction. The driving wheel (332) is connected to the conveying shaft of the rotary drive member (331), the driven wheel (333) is connected to the bottom end of the upper top shaft (312), and the transmission belt (334) is connected to the driving wheel (332) and the driven wheel (333) respectively. Axial edges of the driving wheel (332) and the driven wheel (333) are respectively provided with limiting flanges (3321).

10. The battery shell groove rolling device according to any one of claims 1 to 4, characterized in that: The support mechanism (1) comprises a vertical frame (11), a top plate (12), a middle plate (13) and a bottom plate (14); The top plate (12) is located at the top of the vertical frame (11), the bottom plate (14) is located at the bottom of the vertical frame (11), the middle plate (13) is located in the middle of the vertical frame (11), and the top plate (12), the middle plate (13) and the bottom plate (14) are respectively arranged in parallel and spaced apart; the cylindrical battery shell (100) is located between the top plate (12) and the middle plate (13).

11. The battery shell groove rolling device according to any one of claims 1 to 4, characterized in that: The pressing mechanism (2) comprises a top mold assembly (21) and a pressing assembly (22); The top mold assembly (21) includes a lower pressing shaft sleeve (211) and a lower pressing shaft (212), wherein the lower pressing shaft (212) is located in the lower pressing shaft sleeve (211), the lower pressing shaft (212) can rotate relative to the lower pressing shaft sleeve (211), and the lower pressing shaft sleeve (211) can drive the lower pressing shaft (212) to move in a vertical direction; The bottom end of the pressing shaft (212) is provided with a top die head (2121), and the top die head (2121) is used to insert the top end of the cylindrical battery shell (100); the pressing shaft sleeve (211) is connected to the pressing assembly (22), and the pressing assembly (22) is used to drive the pressing shaft sleeve (211) to move in the vertical direction.

12. The battery shell groove rolling device according to any one of claims 1 to 4, characterized in that: The hob mechanism (4) comprises a hob element (41), a tool holder assembly (42) and a cam feed assembly (43); The rolling cutter member (41) is connected to the cutter holder assembly (42), and the rolling cutter member (41) is in pressing contact with the side surface of the cylindrical battery shell (100); the cutter holder assembly (42) is movably arranged on the support mechanism (1); The cam feeding assembly (43) is fixedly arranged on the supporting mechanism (1), the cam feeding assembly (43) is in contact with the tool holder assembly (42), and the cam feeding assembly (43) is used to drive the tool holder assembly (42) to move horizontally.

13. A cylindrical battery case, characterized in that: The cylindrical battery shell (100) is processed and formed using the battery shell grooving device described in any one of claims 1 to 12.

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