Automatic cap device for lithium battery cell and cell assembling machine thereof

Abstract

The application discloses a kind of lithium battery cell automatic cap device and its cell assembling machine, including feeding mechanism, detection mechanism, cap mechanism, cell platform, upper support mechanism and lower pressure shaping mechanism, and feeding mechanism is horizontally arranged;Cell platform is arranged at the outside of feeding mechanism with interval;Detection mechanism is arranged between feeding mechanism and cell platform;Upper support mechanism and lower pressure shaping mechanism are respectively located in the upper side and lower side of cell platform;Cap mechanism is erected between feeding mechanism and cell platform, cap mechanism takes out cap from feeding mechanism, and after rotating cap to vertical direction, cap is assembled on cell body by passing through tab sleeve.The application realizes cell bearing compression and tab up-down pressure combination and flattening, realizes automatic material taking, linkage handling and angle rotation of cap, realizes that cap is inserted into cell body by tab sleeve, effectively improves cap assembly precision and efficiency, reduces tab bending condition, and improves cap yield.

Description

Technical Field

[0001] This invention relates to the field of automated production equipment for new energy batteries, and in particular to an automated capping device for lithium battery cells and its cell assembly machine. Background Technology

[0002] A battery cell is the core structure of a lithium-ion battery. It refers to a single electrochemical cell containing positive and negative electrodes. It is not used directly; the cell and the protection circuit board together form a battery that can be used directly. The cell includes the cell body, which is generally a block or columnar structure. It contains multiple layers of positive and negative electrodes, which are filled with electrolyte to form the cell body. One end wall of the cell body has flexible sheet-like positive and negative electrode plates that extend outwards for connection to the circuit to provide power.

[0003] In the manufacturing process of battery cells, an intermediate step is the capping process, which involves nesting a cap onto the end wall of the battery cell body. The cap has a box-shaped structure with a through hole in its center corresponding to the horizontally extending tabs of the battery cell body. During the capping process, the cap needs to be set vertically and fitted onto the end wall of the battery cell body with the tabs extending outwards, ensuring that the horizontal tabs pass through the through hole in the cap. Based on the requirements of the battery cell capping process, an automatic capping device needs to be designed, and during the automatic capping process, it is necessary to ensure that the tabs do not contact the cap body. The alignment of the through holes is crucial to prevent the flexible tabs from bending during the capping process. Additionally, the positional stability of the battery cell and the consistency of the surface flatness of the flexible tabs must be ensured before capping. Furthermore, in automated production lines, caps are typically fed via a feeder mechanism. After being peeled off from the feeder, the caps are individually and linearly exported from the linear feed trough, with the caps placed horizontally during export. However, during capping, the caps must be vertically nested against the side wall of the battery cell. Therefore, the positional rotation issue before capping must also be addressed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing an automatic capping device and cell assembly machine for lithium battery cells, which realizes cell bearing and pressing, and upper and lower tab pressing and flattening, realizes automatic material picking, linkage transportation and angle rotation of the cap body, realizes the insertion of the cap body into the tab body of the cell body, effectively improves the assembly accuracy and efficiency of the cap body, reduces the bending of the tabs, and improves the capping yield.

[0005] The technical solution adopted in this invention is as follows: An automatic capping device for lithium battery cells, used to cap the tabs of the cells, includes a feeding mechanism, a detection mechanism, a capping mechanism, a cell platform, an upper support mechanism, and a lower pressing and shaping mechanism. The feeding mechanism is horizontally positioned to continuously guide the caps to be assembled horizontally. The cell platform is spaced apart outside the feeding mechanism, and the cell bodies to be assembled are placed on the cell platform, which also adsorbs and presses the cell bodies firmly. The detection mechanism is positioned between the feeding mechanism and the cell platform, used to photograph the caps and the cell bodies from both vertical and horizontal directions before assembly. The upper support mechanism and the lower pressing and shaping mechanism are located on the upper and lower sides of the cell platform, respectively, pressing and flattening the horizontally extending tabs on the sides of the cell bodies from below and above. The capping mechanism is positioned between the feeding mechanism and the cell platform. The capping mechanism takes the caps from the feeding mechanism, rotates the caps to a vertical position, and then passes the caps through the tabs to assemble them onto the cell bodies.

[0006] Preferably, the capping mechanism includes a bracket, a drive assembly, and a capping assembly. The bracket is a U-shaped frame structure, horizontally mounted above the feeding mechanism. The drive assembly is mounted on the bracket and outputs linear power in mutually perpendicular directions in the horizontal plane. The capping assembly is mounted on the drive assembly and moves between the feeding mechanism and the cell platform under the drive assembly's drive, so as to remove the cap at the feeding mechanism and assemble the cap onto the cell body at the cell platform.

[0007] Preferably, the driving assembly includes a first linear module, a first slide block, a second linear module, and a lifting linear module, wherein the first linear module is horizontally disposed on one side of the bracket; the first slide block is horizontally disposed on the first linear module and moves linearly driven by the first linear module; the second linear module is disposed on the first slide block in a direction perpendicular to the first linear module; the lifting linear module is connected to the output end of the second linear module and outputs linear power in a vertical direction; the cap assembly is disposed on the lifting linear module and moves up and down driven by the lifting linear module.

[0008] Preferably, the cap assembly includes a support plate, a first rotary motor, a rotary seat, a support platform, a second rotary motor, a transmission belt, a transmission wheel, and a cap head. The support plate is vertically connected to the output end of the lifting linear module. The first rotary motor is vertically mounted on the side wall of the support plate, with its output end facing downwards and connected to a reducer, the output end of which is horizontally positioned. The rotary seat is vertically connected to the output end of the reducer and rotates in a vertical plane driven by the reducer. The support platform is mounted on the side wall of the rotary seat and extends horizontally outwards. The second rotary motor is horizontally mounted on the rotary seat, and a transmission wheel is fitted onto its output end. The cap head is horizontally positioned and rotatably inserted into the support platform, with a transmission wheel fitted onto one end of the cap head. The transmission belt is respectively fitted onto the second rotary motor and the transmission wheel of the cap head, and the second rotary motor drives the cap head to rotate via the transmission belt and the transmission wheel.

[0009] Preferably, the capped head includes a rotating shaft, a capped support, a buffer spring, a capped slide, a capped block, and an air nozzle. The rotating shaft is rotatably inserted into the support platform, with a transmission wheel sleeved at one end. The capped support is located at the other end of the rotating shaft and is an L-shaped seat with one end protruding upwards. The capped slide is slidably mounted on the capped support. Two buffer springs are arranged parallel and spaced apart, with one end connected to the capped support and the other end connected to the capped slide, providing elastic cushioning when the capped slide slides. The capped block is mounted on the capped support and has a U-shaped opening groove at its outer end. Vacuum suction holes are arranged within the groove. An air passage is arranged within the capped block, with one end connected to the vacuum suction hole. The air nozzle is located on the side of the capped block and connected to the other end of the air passage, used for vacuum extraction to adsorb the cap within the groove through negative vacuum pressure.

[0010] Preferably, the testing mechanism includes a first testing mechanism, a second testing mechanism, and a third testing mechanism. The second testing mechanism is mounted above the feeding mechanism and is used to take downward photographs to test the cap body horizontally extending from the feeding mechanism. The first testing mechanism is positioned between the feeding mechanism and the cell platform, and takes horizontal photographs to test the cap body that has been removed from the feeding mechanism and rotated to the vertical direction. The third testing mechanism is mounted above the cell platform and is used to test the cell body or cap body. The second testing mechanism includes a testing bracket and a testing slide rail. The system comprises a detection slide, an adjustment cap, an adjustment rod, a first CCD lens, a light source bracket, and a first light source. The detection bracket is mounted above the feeding mechanism. The detection slide rail is vertically mounted on the side wall of the detection bracket. The detection slide is slidably embedded in the detection slide rail. The adjustment rod is vertically inserted into the detection bracket and the detection slide, and is threadedly connected to both. The adjustment cap is located on top of the adjustment rod; rotating the adjustment cap rotates the adjustment rod to drive the detection slide's lifting and lowering motion. The first CCD lens is mounted on the detection slide, facing downwards. The light source bracket is located below the detection slide. The first light source is mounted on the light source bracket and emits a downward-facing light source for imaging.

[0011] Preferably, the cell platform includes a platform support, a bearing suction seat, a guide limiting seat, a piezoelectric cell assembly, and a pressure electrode assembly. The platform support is horizontally positioned. The bearing suction seat is horizontally positioned on the platform support and has at least two vacuum suction holes. The cell body to be assembled is horizontally positioned on the bearing suction seat and fixed by vacuum negative pressure generated by the vacuum suction holes. The platform support has a through groove running vertically through it. The guide limiting seat is located at the edge of the platform support and on one side of the through groove, and has an arc-shaped limiting bearing groove inside. The piezoelectric cell assembly is positioned below the platform support and extends above it to press the cell body from above. The pressure electrode assembly is positioned below the platform support and extends upwards to synchronously press and fit onto the cap of the cell body from above.

[0012] Preferably, the piezoelectric cell assembly includes a pressing cylinder, a pressing shaft, a pressing block, and a guide roller. The pressing cylinder is positioned below the platform support with its output end facing upwards. The pressing shaft is vertically connected to the output end of the pressing cylinder and extends upwards through the platform support. The pressing block is horizontally positioned on top of the pressing shaft, with one end extending horizontally above the cell body. The guide roller is positioned at the other end of the pressing block and extends into the limiting groove of the guide limiting seat. The pressing cylinder drives the pressing block to move up and down via the pressing shaft, pressing it flat against the cell body from above, and sliding within the forming limiting groove via the guide roller for guiding and limiting.

[0013] Preferably, the pressure tab assembly includes a support block, a first slider, a first cylinder, a second slider, a second cylinder, a lower pressure plate, a first spring, and a second spring. The support block is horizontally positioned at the bottom of the platform support, and one side edge of the support block has a support portion extending downwards perpendicular to the support block. The first slider has an L-shaped block structure, and one side plate of the first slider is slidably connected to the side wall of the support block. The first cylinder is mounted on the first slider, and its output end passes through the first slider and pushes against the support portion. When the first cylinder outputs power, its output end pushes against the support portion, and the reaction force of the support portion pushes the first cylinder and the first slider to slide on the support block. The second slider is slidably mounted on the other side plate of the first slider, and one side of the second slider first extends upwards through a through groove, then extends horizontally to... Above the tab of the battery cell body; the second cylinder is mounted on the second slider, and the second cylinder outputs power in a direction perpendicular to the first cylinder. The output end of the second cylinder passes through the second slider and pushes against the first slider. The reaction force of the second slider pushes the second slider to move linearly. The lower pressure plate is located at the part of the second slider that extends horizontally to above the tab. The lower pressure plate moves with the second slider to press down and shape the tab from above. The two ends of the first spring are respectively connected to the first slider and the support block. In the natural state, the elastic force of the first spring pulls the first slider in the opposite direction to the first cylinder. The two ends of the second spring are respectively connected to the second slider and the first slider. In the natural state, the elastic force of the second spring pulls the second slider in the opposite direction to the second cylinder.

[0014] A cell assembly machine that includes an automatic capping device for lithium battery cells.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention addresses the shortcomings and deficiencies of existing technologies by independently developing and designing an automatic capping device and cell assembly machine for lithium battery cells. This machine enables cell bearing and pressing, as well as the pressing and flattening of the tabs. It also enables automatic material handling, linkage transport, and angle rotation of the cap body, allowing the cap body to be inserted into the tabs of the cell body. This effectively improves the accuracy and efficiency of cap assembly, reduces tab bending, and increases the capping yield.

[0017] This invention aims to provide an automated cell assembly device for the new energy battery field. Its function is to automatically feed, rotate, and attach the cell cap, while maintaining the flatness of the tabs, automatically nesting the cap onto the cell body. This effectively improves cap-attaching accuracy and efficiency, and increases the yield rate. Specifically, the invention includes a feeding mechanism, a cap-attaching mechanism, a detection mechanism, a cell platform, an upper support mechanism, and a lower pressing and shaping mechanism. The cell platform is horizontally positioned, and its support surface has multiple vacuum suction holes. The cell body to be assembled is placed horizontally on the support platform and fixed by vacuum negative pressure. The cell pressing assembly and tab pressing assembly on the cell platform press the cell body from above and flatten the side end faces and tabs of the cell body. The upper support mechanism below the cell platform and the lower pressing and shaping mechanism above it support the supporting tabs and the lower pressing and shaping tabs from below and above, respectively. In addition, after the caps to be assembled are continuously fed out by the feeding mechanism, they are taken out one by one by the cap-wearing mechanism from the feeding mechanism. While moving the caps to the cell platform, the cap-wearing mechanism rotates the horizontally removed caps to the vertical direction so that they can be horizontally fitted onto the side wall of the cell body from the outside in a vertical position during subsequent assembly. At the same time, the rotated caps are photographed from the horizontal and vertical directions by the first and second detection mechanisms of the detection mechanism, respectively, and the third detection mechanism photographs the position information of the cell body and the electrode. By comparing the positions of the two, the cap-wearing mechanism adjusts the relative position of the caps with the cell body and the electrode to accurately fit the electrode onto the cell body.

[0018] Specifically, to ensure the positional accuracy of the battery cell body during assembly and the surface flatness of the tabs connected to its end walls, the battery cell platform is equipped with a battery cell pressing assembly and a tab pressing assembly. The pressing cylinder of the battery cell pressing assembly is located below the platform support, and the pressing shaft connected to the output end extends upward through the platform support to drive the pressing block located at the top of the pressing shaft to move up and down, thereby pressing the battery cell body flat from above to ensure its positional stability during assembly. At the same time, to avoid excessive compression of the battery cell body and its pressing position accuracy during the pressing process, the pressing block slides in the limiting bearing groove of the guide limiting seat on the platform support through the guide groove at the end of the pressing block, so as to achieve the guiding and limiting of the pressing block during the pressing process. After pressing, the part of the battery cell body with tabs on the side to be assembled extends to the outside of the bearing suction seat and the pressing block, and is in a suspended state to facilitate the subsequent assembly of the cap. To prevent the suspended tabs from bending due to their own weight, thus affecting their flatness, an upper support mechanism is installed below to support the suspended tabs from below, while a tab pressing assembly presses the tabs down from above to ensure their surface flatness. The tab pressing assembly uses a horizontally mounted support block at the bottom of the platform as its load-bearing structure. The position of the lower pressing plate is adjusted by a first slide and a second slide that slide linearly in mutually perpendicular directions within the same plane, so that it is aligned with the edge of the cell body and pressed down. The first and second slides slide under the driving force of the first and second cylinders respectively, driven by the opposing forces. The lower pressing plate has an L-shaped notch, which presses down along the edge of the cell body. The inner sidewall smooths the wrinkles on the end face of the cell body, while the bottom surface presses down to smooth the tabs connected to the end face of the cell body. Thus, a single press simultaneously smooths and presses down the side face of the cell body and the surface of the tabs.

[0019] Furthermore, the capping mechanism of the present invention serves as an assembly execution mechanism, simultaneously realizing material picking, transfer, and capping assembly. While transferring the cap body, it also completes the angle adjustment of the cap body, effectively saving assembly steps and mechanisms, improving capping assembly efficiency, and reducing equipment manufacturing costs. The capping mechanism uses a U-shaped support as its load-bearing structure. A drive mechanism provides mutually perpendicular power drives in the horizontal plane and linear power drives in the vertical direction, enabling the capping assembly to move back and forth between the feeding mechanism and the battery cell platform. This allows the cap body to be taken from the feeding mechanism and assembled onto the battery cell body on the battery cell platform. Notably, the capping assembly uses a support plate vertically connected to the lifting linear module as its load-bearing structure. A first rotary motor mounted on the support plate outputs power to a reducer below it, which then outputs rotational power to drive a rotating seat connected to it to rotate in the vertical plane. The rotating base has a horizontally protruding support on its side wall. A rotating shaft with a cap is rotatably inserted on the support. The power output from a second rotating motor mounted on the rotating base drives the rotating shaft to rotate in a plane perpendicular to the rotating shaft via a transmission belt and transmission wheel. The first and second rotating motors realize the rotational movement of the rotating shaft in two mutually perpendicular vertical planes, giving the cap a rotating direction with two degrees of freedom. This allows for synchronous adjustment of the cap angle during the removal of the cap from the feeding mechanism and during cap handling, thus matching the subsequent cap assembly angle. Furthermore, the cap of this invention uses a rotating shaft as the connecting structure, and an L-shaped cap support mounted on the rotating shaft as the supporting structure. A cap slide is slidably connected to the cap support, and the cap slide and cap support are connected by a buffer spring. This provides elastic buffering force for the cap block at the end of the cap slide when picking up and placing the cap, reducing the compression deformation on the side end face of the battery cell and ensuring cap quality. Attached Figure Description

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention.

[0021] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention.

[0022] Figure 3 This is the third three-dimensional structural schematic diagram of the present invention.

[0023] Figure 4 This is one of the three-dimensional structural schematic diagrams of the capping mechanism of the present invention.

[0024] Figure 5 This is the second three-dimensional structural schematic diagram of the capping mechanism of the present invention.

[0025] Figure 6 This is the third three-dimensional structural schematic diagram of the capping mechanism of the present invention.

[0026] Figure 7 This is one of the three-dimensional structural schematic diagrams of the capped component of the present invention.

[0027] Figure 8 This is the second three-dimensional structural schematic diagram of the capped component of the present invention.

[0028] Figure 9 This is one of the component disassembly diagrams of the capped assembly of the present invention.

[0029] Figure 10 This is the second schematic diagram showing the component breakdown structure of the capped assembly of the present invention.

[0030] Figure 11 This is the third schematic diagram showing the component breakdown structure of the capped assembly of the present invention.

[0031] Figure 12 This is one of the three-dimensional structural diagrams of the present invention with a cap.

[0032] Figure 13 This is the second schematic diagram of the three-dimensional structure of the present invention with a cap.

[0033] Figure 14 This is one of the component structure diagrams of the present invention.

[0034] Figure 15 This is the second schematic diagram of the component structure of the present invention.

[0035] Figure 16 This is the third schematic diagram of the component structure of the present invention.

[0036] Figure 17 This is the fourth schematic diagram of the component structure of the present invention.

[0037] Figure 18 This is the fifth schematic diagram of the component structure of the present invention.

[0038] Figure 19 This is the sixth schematic diagram of the component structure of the present invention.

[0039] Figure 20 This is a three-dimensional structural diagram of the vertical detection mechanism of the present invention.

[0040] Figure 21 for Figure 20 Enlarged structural diagram at point I.

[0041] Figure 22 This is one of the three-dimensional structural diagrams of the battery cell platform, the upper support mechanism, the third detection mechanism, and the lower pressing and shaping mechanism of the present invention.

[0042] Figure 23 This is the second three-dimensional structural diagram of the battery cell platform, the upper support mechanism, the third detection mechanism, and the lower pressing and shaping mechanism of the present invention.

[0043] Figure 24 This is one of the three-dimensional structural diagrams of the upper support mechanism and the third detection mechanism of the present invention.

[0044] Figure 25 This is the second three-dimensional structural diagram of the upper support mechanism and the third detection mechanism of the present invention.

[0045] Figure 26 This is the third three-dimensional structural diagram of the upper support mechanism and the third detection mechanism of the present invention.

[0046] Figure 27 This is one of the three-dimensional structural schematic diagrams of the battery cell platform of the present invention.

[0047] Figure 28 This is the second three-dimensional structural schematic diagram of the battery cell platform of the present invention.

[0048] Figure 29 This is the third three-dimensional structural schematic diagram of the battery cell platform of the present invention.

[0049] Figure 30 This is one of the three-dimensional structural diagrams of the battery cell platform of the present invention after the components are hidden.

[0050] Figure 31 This is the second three-dimensional structural diagram of the battery cell platform of the present invention with hidden components.

[0051] Figure 32 This is one of the three-dimensional structural schematic diagrams of the pressure electrode tab assembly of the present invention.

[0052] Figure 33 This is the second three-dimensional structural schematic diagram of the pressure electrode tab assembly of the present invention.

[0053] Figure 34 This is the third three-dimensional structural schematic diagram of the pressure electrode assembly of the present invention.

[0054] Figure 35 This is the fourth three-dimensional structural schematic diagram of the pressure electrode assembly of the present invention.

[0055] Figure 36 This is one of the three-dimensional structural schematic diagrams of the pressing and shaping mechanism of the present invention.

[0056] Figure 37 This is one of the three-dimensional structural schematic diagrams of the pressure shaping component of the present invention.

[0057] Figure 38 This is the second three-dimensional structural schematic diagram of the pressing and shaping component of the present invention.

[0058] In the picture:

[0059] 1. Feeding mechanism; 2. Capping mechanism; 3. First inspection mechanism; 4. Second inspection mechanism; 5. Cell platform; 6. Upper support mechanism; 7. Third inspection mechanism; 8. Lowering and shaping mechanism;

[0060] 01. Battery core body; 02. Cap body;

[0061] 21. Bracket; 22. First linear module; 23. First slide; 24. Second linear module; 25. Lifting linear module; 26. Capped assembly;

[0062] 261. Support plate; 262. First rotary motor; 263. Rotary seat; 264. Support platform; 265. Second rotary motor; 266. Transmission belt; 267. Transmission wheel; 268. Capped head;

[0063] 2681, Rotating shaft; 2682, Capped support; 2683, Buffer spring; 2684, Capped slide; 2685, Capped block; 2686, Air nozzle; A, Groove;

[0064] 41. Detection bracket; 42. Detection slide rail; 43. Detection slide block; 44. Adjustment cap; 45. Adjustment rod; 46. First CCD lens; 47. Light source bracket; 48. First light source;

[0065] 51. Platform support; 52. Bearing suction seat; 53. Guide limit seat; 54. Clamping cylinder; 55. Clamping shaft; 56. Clamping block; 57. Guide roller; 58. Pressure electrode lug assembly; B. Through groove; C. Limit bearing groove;

[0066] 581. Support block; 582. First slider; 583. First cylinder; 584. Second slider; 585. Second cylinder; 586. Lower pressure plate; 587. First spring; 588. Second spring;

[0067] 61. Upper support bracket; 62. Upper linear module; 63. Upper slide block; 64. Upper cylinder; 65. Upper lifting seat; 66. Upper block;

[0068] 71. Connecting bracket; 72. Adjusting screw; 73. Adjusting slide; 74. Second CCD lens; 75. Prism; 76. Support frame; 77. Second light source;

[0069] 81. Shaping bracket; 82. Shaping support plate; 83. Pressing cylinder; 84. Pressing slide; 85. Pressing block; 86. Elastic shaft; 87. Pressing push block; 88. Pressing block. Detailed Implementation

[0070] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0071] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1

[0073] like Figures 1 to 3 As shown, this invention proposes an automatic capping device for lithium battery cells, used to cap the tabs of the cells. It includes a feeding mechanism 1, a detection mechanism, a capping mechanism 2, a cell platform 5, an upper support mechanism 6, and a lower pressing and shaping mechanism 8. The feeding mechanism 1 is horizontally positioned to continuously guide the caps 02 to be assembled. The cell platform 5 is spaced apart outside the feeding mechanism 1, and the cell bodies 01 to be assembled are placed on the cell platform 5, which also adsorbs and presses the cell bodies 01 firmly. The detection mechanism is located between the feeding mechanism 1 and the cell platform. Between 5, it is used to take pictures of the test cap 02 and the test cell body 01 from the vertical and horizontal directions before assembly; the upper support mechanism 6 and the lower pressing and shaping mechanism 8 are located on the upper and lower sides of the cell platform 5, respectively, and press and flatten the horizontally extending electrode tabs on the side of the cell body 01 from below and above; the cap-attaching mechanism 2 is set between the feeding mechanism 1 and the cell platform 5. The cap-attaching mechanism 2 takes out the cap 02 from the feeding mechanism 1, rotates the cap 02 to the vertical direction, and then puts the cap 02 through the electrode tabs and assembles it on the cell body 01.

[0074] Furthermore, this invention designs an automatic capping device and cell assembly machine for lithium battery cells, which realizes cell bearing and pressing, and upper and lower tab pressing and flattening, realizes automatic cap picking, linkage transportation and angle rotation, realizes cap insertion and tab fitting into the cell body, effectively improves cap assembly accuracy and efficiency, reduces tab bending, and improves capping yield.

[0075] This invention aims to provide an automated cell assembly device for the new energy battery field. Its function is to automatically feed, rotate, and attach the cell cap, while maintaining the flatness of the tabs, automatically nesting the cap onto the cell body. This effectively improves cap-attaching accuracy and efficiency, and increases the yield rate. Specifically, the invention includes a feeding mechanism, a cap-attaching mechanism, a detection mechanism, a cell platform, an upper support mechanism, and a lower pressing and shaping mechanism. The cell platform is horizontally positioned, and its support surface has multiple vacuum suction holes. The cell body to be assembled is placed horizontally on the support platform and fixed by vacuum negative pressure. The cell pressing assembly and tab pressing assembly on the cell platform press the cell body from above and flatten the side end faces and tabs of the cell body. The upper support mechanism below the cell platform and the lower pressing and shaping mechanism above it support the supporting tabs and the lower pressing and shaping tabs from below and above, respectively. In addition, after the caps to be assembled are continuously fed out by the feeding mechanism, they are taken out one by one by the cap-wearing mechanism from the feeding mechanism. While moving the caps to the cell platform, the cap-wearing mechanism rotates the horizontally removed caps to the vertical direction so that they can be horizontally fitted onto the side wall of the cell body from the outside in a vertical position during subsequent assembly. At the same time, the rotated caps are photographed from the horizontal and vertical directions by the first and second detection mechanisms of the detection mechanism, respectively, and the third detection mechanism photographs the position information of the cell body and the electrode. By comparing the positions of the two, the cap-wearing mechanism adjusts the relative position of the caps with the cell body and the electrode to accurately fit the electrode onto the cell body. Example 2

[0076] like Figures 4 to 13 As shown in the figure, as an embodiment of the present invention, the capping mechanism 2 of the present invention includes a bracket 21, a drive assembly, and a capping assembly 26. The bracket 21 is a U-shaped frame structure and is horizontally mounted above the feeding mechanism 1. The drive assembly is mounted on the bracket 21 and outputs linear power in mutually perpendicular directions in the horizontal plane. The capping assembly 26 is mounted on the drive assembly and is driven by the drive assembly to move between the feeding mechanism 1 and the cell platform 5 so as to take out the cap 02 at the feeding mechanism 1 and assemble the cap 02 onto the cell body 01 at the cell platform 5.

[0077] The drive assembly includes a first linear module 22, a first slide block 23, a second linear module 24, and a lifting linear module 25. The first linear module 22 is horizontally disposed on one side of the bracket 21. The first slide block 23 is horizontally disposed on the first linear module 22 and moves linearly driven by the first linear module 22. The second linear module 24 is disposed on the first slide block 23 in a direction perpendicular to the first linear module 22. The lifting linear module 25 is connected to the output end of the second linear module 24 and outputs linear power in a vertical direction. The cap assembly 26 is disposed on the lifting linear module 25 and moves up and down driven by the lifting linear module 25.

[0078] The cap assembly 26 includes a support plate 261, a first rotary motor 262, a rotating seat 263, a support platform 264, a second rotary motor 265, a transmission belt 266, a transmission wheel 267, and a cap head 268. The support plate 261 is vertically connected to the output end of the lifting linear module 25. The first rotary motor 262 is vertically mounted on the side wall of the support plate 261, with its output end facing downwards and connected to a reducer, the output end of which is horizontally positioned. The rotating seat 263 is vertically connected to the output end of the reducer and rotates in a vertical plane driven by the reducer. The support platform... 264 is set on the side wall of the rotating base 263 and extends horizontally outward; the second rotary motor 265 is horizontally set on the rotating base 263, and a transmission wheel 267 is sleeved on the output end of the second rotary motor 265; the capped head 268 is horizontally set and rotatably inserted into the support 264, and a transmission wheel 267 is sleeved on one end of the capped head 268; the transmission belt 266 is respectively sleeved on the second rotary motor 265 and the transmission wheel 267 of the capped head 268, and the second rotary motor 265 drives the capped head 268 to rotate through the transmission belt 266 and the transmission wheel 267.

[0079] The capped head 268 includes a rotating shaft 2681, a capped support 2682, a buffer spring 2683, a capped slide 2684, a capped block 2685, and an air nozzle 2686. The rotating shaft 2681 is rotatably inserted into the support 264, and a transmission wheel 267 is sleeved on one end of the rotating shaft 2681. The capped support 2682 is located at the other end of the rotating shaft 2681 and is an L-shaped seat with one end protruding upwards. The capped slide 2684 is slidably mounted on the capped support 2682. Two buffer springs 2683 are arranged parallel and spaced apart to buffer... One end of the spring 2683 is connected to the capped support 2682, and the other end is connected to the capped slide 2684, providing elastic cushioning when the capped slide 2684 slides; the capped block 2685 is set on the capped support 2682, and the outer end of the capped block 2685 is provided with a U-shaped opening groove A; the groove A is provided with vacuum suction holes; the capped block 2685 is provided with an air passage, one end of which is connected to the vacuum suction hole; the air nozzle 2686 is set on the side of the capped block 2685 and connected to the other end of the air passage, for vacuum pumping, so as to adsorb the cap body 02 in the groove A through vacuum negative pressure.

[0080] The capping mechanism of this invention serves as an assembly execution mechanism, simultaneously realizing material picking, transfer, and cap assembly. While transferring the cap body, it also adjusts the angle of the cap body during rotation, effectively saving assembly steps and mechanisms, improving cap assembly efficiency, and reducing equipment manufacturing costs. The capping mechanism uses a U-shaped support as its load-bearing structure. A drive mechanism provides mutually perpendicular power drives in the horizontal plane and linear power drives in the vertical direction, enabling the capping assembly to move back and forth between the feeding mechanism and the battery cell platform. This allows the cap body to be removed from the feeding mechanism and assembled onto the battery cell body on the battery cell platform. A key feature is that the capping assembly uses a support plate vertically connected to the lifting linear module as its load-bearing structure. A first rotary motor mounted on the support plate outputs power to a reducer below it, which in turn outputs rotational power to drive a rotating seat connected to it to rotate in the vertical plane. The rotating base has a horizontally protruding support on its side wall. A rotating shaft with a cap is rotatably inserted on the support. The power output from a second rotating motor mounted on the rotating base drives the rotating shaft to rotate in a plane perpendicular to the rotating shaft via a transmission belt and transmission wheel. The first and second rotating motors realize the rotational movement of the rotating shaft in two mutually perpendicular vertical planes, giving the cap a rotating direction with two degrees of freedom. This allows for synchronous adjustment of the cap angle during the removal of the cap from the feeding mechanism and during cap handling, thus matching the subsequent cap assembly angle. Furthermore, the cap of this invention uses a rotating shaft as the connecting structure, and an L-shaped cap support mounted on the rotating shaft as the supporting structure. A cap slide is slidably connected to the cap support, and the cap slide and cap support are connected by a buffer spring. This provides elastic buffering force for the cap block at the end of the cap slide when picking up and placing the cap, reducing the compression deformation on the side end face of the battery cell and ensuring cap quality. Example 3

[0081] like Figures 14 to 21As shown in the figure, as an embodiment of the present invention, the detection mechanism of the present invention includes a first detection mechanism 3, a second detection mechanism 4, and a third detection mechanism 7. The second detection mechanism 4 is mounted above the feeding mechanism 1 and is used to take downward photographs to detect the cap body 02 horizontally extended from the feeding mechanism 1. The first detection mechanism 3 is disposed between the feeding mechanism 1 and the cell platform 5, and takes horizontal photographs to detect the cap body 02 that has been taken out of the feeding mechanism 1 and rotated to the vertical direction by the capping mechanism 2. The third detection mechanism 7 is mounted above the cell platform 5 and is used to detect the cell body 01 or the cap body 02. The second detection mechanism 4 includes a detection bracket 41 and a detection slide rail 42. The system comprises a detection slide 43, an adjustment cap 44, an adjustment rod 45, a first CCD lens 46, a light source bracket 47, and a first light source 48. The detection bracket 41 is mounted above the feeding mechanism 1. The detection slide rail 42 is vertically mounted on the side wall of the detection bracket 41. The detection slide 43 is slidably embedded in the detection slide rail 42. The adjustment rod 45 is vertically inserted into the detection bracket 41 and the detection slide 43, and is threadedly connected to both. The adjustment cap 44 is located on top of the adjustment rod 45; rotating the adjustment cap 44 rotates the adjustment rod 45, thereby driving the detection slide 43 to move up and down. The first CCD lens 46 is mounted on the detection slide 43, with the lens facing downwards. The light source bracket 47 is located below the detection slide 43. The first light source 48 is mounted on the light source bracket 47 and is used to emit a downward-facing imaging light source.

[0082] like Figures 22 to 26 As shown in the figure, as an embodiment of the present invention, the third detection mechanism 7 of the present invention includes a connecting bracket 71, an adjusting screw 72, an adjusting slide 73, a second CCD lens 74, a prism 75, a support frame 76, and a second light source 77. The connecting bracket 71 is disposed on the upper slide 63 and extends horizontally outward; the adjusting screw 72 is horizontally inserted into the connecting bracket 71 and threadedly connected to the connecting bracket 71; the adjusting slide 73 is slidably embedded in the side wall of the connecting bracket 71 and threadedly connected to the adjusting screw 72. When the adjusting screw 72 rotates, it pushes the adjusting slide 73 to move linearly. The second CCD lens 74 is mounted on the side wall of the adjustment slide 73, with its shooting direction facing upwards; the prism 75 is mounted on the side wall of the adjustment slide 73, above the second CCD lens 74, and is located on the side of the tab, with its side horizontally aligned with the tab. The second CCD lens 74, after refracting light through the prism 75, horizontally captures and detects the tab and the battery cell body 01 from the side of the tab; the support frame 76 is vertically mounted on the side wall of the adjustment slide 73; the second light source 77 is mounted on the support frame 76, facing the tab, and is used to emit an auxiliary light source to illuminate the tab, battery cell body 01, and cap 02 to be photographed. Example 4

[0083] like Figures 27 to 35 As shown in the figure, as an embodiment of the present invention, the battery cell platform 5 of the present invention includes a platform support 51, a bearing suction seat 52, a guide limiting seat 53, a piezoelectric cell assembly, and a pressure electrode tab assembly 58, wherein the platform support 51 is horizontally arranged; the bearing suction seat 52 is horizontally arranged on the platform support 51, and the bearing suction seat 52 is provided with at least two vacuum suction holes, the battery cell body 01 to be assembled is horizontally arranged on the bearing suction seat 52, and is adsorbed and fixed by the vacuum negative pressure generated by the vacuum suction holes; the platform support 51 has A through groove B is provided; the guide limiting seat 53 is located at the edge of the platform support 51 and on one side of the through groove B, and the guide limiting seat 53 has an arc-shaped limiting bearing groove C; the piezoelectric cell assembly is located below the platform support 51 and extends above the platform support 51 to press the cell body 01 from above; the electrode tab assembly 58 is located below the platform support 51 and extends upward to synchronously press and fit onto the cap 02 of the cell body 01 from above.

[0084] The piezoelectric cell assembly includes a clamping cylinder 54, a clamping shaft 55, a clamping block 56, and a guide roller 57. The clamping cylinder 54 is located below the platform support 51 with its output end facing upward. The clamping shaft 55 is vertically connected to the output end of the clamping cylinder 54 and extends upward through the platform support 51. The clamping block 56 is horizontally located on top of the clamping shaft 55, with one end extending horizontally above the cell body 01. The guide roller 57 is located at the other end of the clamping block 56 and extends into the limiting bearing groove C of the guide limiting seat 53. The clamping cylinder 54 drives the clamping block 56 to move up and down via the clamping shaft 55, pressing it flat against the cell body 01 from above, and slides within the forming limiting groove C via the guide roller 57 for guiding and limiting.

[0085] The pressure tab assembly 58 includes a support block 581, a first slider 582, a first cylinder 583, a second slider 584, a second cylinder 585, a lower pressure plate 586, a first spring 587, and a second spring 588. The support block 581 is horizontally positioned at the bottom of the platform support 51, and one side edge of the support block 581 has a support portion extending downwards perpendicular to the support block 581. The first slider 582 has an L-shaped block structure, and one side plate of the first slider 582 is slidably connected to the side wall of the support block 581. The first cylinder 583 is mounted on the first slider 582. The output end of the first cylinder 583 passes through the first slider 582 and pushes against the support. When the first cylinder 583 outputs power, its output end pushes against the support. The reaction force of the support pushes the first cylinder 583 and the first slider 582 to slide on the support block 581. The second slider 584 is slidably mounted on the other side plate of the first slider 582. One side of the second slider 584 first extends upward through the through slot B, and then extends horizontally to the battery cell body. Above the electrode tab of 01; the second cylinder 585 is mounted on the second slider 584, and the second cylinder 585 outputs power in a direction perpendicular to the first cylinder 583. The output end of the second cylinder 585 passes through the second slider 584 and pushes against the first slider 582. The output power of the second cylinder 585 pushes against the first slider 582, and the reaction force of the first slider 582 pushes the second slider 584 to move linearly; the lower pressure plate 586 is located at the part of the second slider 584 that extends horizontally to above the electrode tab. 86 moves with the second slider 584 to press down on the shaping tab from above; the two ends of the first spring 587 are respectively connected to the first slider 582 and the support block 581. In its natural state, the elastic force of the first spring 587 pulls the first slider 582 in the opposite direction to the first cylinder 583; the two ends of the second spring 588 are respectively connected to the second slider 584 and the first slider 582. In its natural state, the elastic force of the second spring 588 pulls the second slider 584 in the opposite direction to the second cylinder 585.

[0086] To ensure the positional accuracy of the battery cell body during assembly and the surface flatness of the tabs connected to its end walls, the battery cell platform is equipped with a cell pressing assembly and a tab pressing assembly. The pressing cylinder of the cell pressing assembly is located below the platform support, and the pressing shaft connected to the output end extends upward through the platform support to drive the pressing block located at the top of the pressing shaft to move up and down, thereby pressing the battery cell body flat from above to ensure its positional stability during assembly. At the same time, to avoid excessive compression of the battery cell body and ensure its pressing positional accuracy, the pressing block slides in the limiting bearing groove of the guide limit seat on the platform support through the guide groove at the end of the pressing block, so as to guide and limit the pressing block during the pressing process. After pressing, the part of the battery cell body with tabs on the side to be assembled extends to the outside of the bearing suction seat and the pressing block and is in a suspended state to facilitate the subsequent assembly of the cap. To prevent the suspended tabs from bending due to their own weight, thus affecting their flatness, an upper support mechanism is installed below to support the suspended tabs from below, while a tab pressing assembly presses the tabs down from above to ensure their surface flatness. The tab pressing assembly uses a horizontally mounted support block at the bottom of the platform as its load-bearing structure. The position of the lower pressing plate is adjusted by a first slide and a second slide that slide linearly in mutually perpendicular directions within the same plane, so that it is aligned with the edge of the cell body and pressed down. The first and second slides slide under the driving force of the first and second cylinders respectively, driven by the opposing forces. The lower pressing plate has an L-shaped notch, which presses down along the edge of the cell body. The inner sidewall smooths the wrinkles on the end face of the cell body, while the bottom surface presses down to smooth the tabs connected to the end face of the cell body. Thus, a single press simultaneously smooths and presses down the side face of the cell body and the surface of the tabs. Example 5

[0087] like Figures 22 to 26 As shown in the figure, as an embodiment of the present invention, the upper support mechanism 6 of the present invention includes an upper support support 61, an upper support linear module 62, an upper support slide 63, an upper support cylinder 64, an upper support lifting seat 65, and an upper support block 66. The upper support support 61 is horizontally disposed below the cell platform 5; the upper support linear module 62 is horizontally disposed on the upper support support 61; the upper support slide 63 is disposed on the upper support linear module 62 and moves linearly driven by the upper support linear module 62; the upper support cylinder 64 is disposed on the upper support slide 63, with its output end facing upwards; the upper support lifting seat 65 is slidably connected to the upper support cylinder 64 and connected to the output end of the upper support cylinder 64; the upper support block 66 is disposed on the top of the upper support lifting seat 65 and, driven by the upper support lifting seat 65, supports the tabs extending outwards from below, supporting the cell body 01.

[0088] like Figures 36 to 38As shown in the figure, as an embodiment of the present invention, the pressing and shaping mechanism 8 of the present invention includes a shaping bracket 81, a shaping support plate 82, a pressing cylinder 83, a pressing slide 84, a pressing block 85, an elastic shaft 86, a pressing push block 87, and a pressing block 88. The shaping bracket 81 is mounted above the cell platform 5; the shaping support plate 82 is vertically mounted on the shaping bracket 81; the pressing cylinder 83 is mounted on the side wall of the shaping support plate 82 and outputs power in the vertical direction; the pressing slide 84 is vertically mounted on the side wall of the shaping support plate 82. The pressure block 85 is slidably connected to the pressure cylinder 83 and connected to the output end of the pressure cylinder 83; the pressure support block 85 is disposed on the side wall of the pressure slide 84; the pressure push block 87 is slidably connected to the side wall of the pressure slide 84; the upper end of the elastic shaft 86 is slidably inserted into the pressure support block 85, and the lower end of the elastic shaft 86 is connected to the pressure push block 87 to provide elastic buffer to the pressure push block 87; the pressure block 88 is connected to the bottom of the pressure push block 87 to flatten the electrode tab from above. Example 6

[0089] As an embodiment of the present invention, the present invention discloses a cell assembly machine including an automatic capping device for lithium battery cells.

[0090] The embodiments of this invention are merely illustrative of specific implementation methods and are not intended to limit the scope of protection. Those skilled in the art can make modifications based on these embodiments; therefore, all equivalent changes or modifications made in accordance with the scope of this invention's patent claims fall within the scope of this invention's patent claims.

Claims

1. An automatic capping device for lithium battery cells, used to cap the tabs of the battery cells, characterized in that: It includes a feeding mechanism (1), a testing mechanism, a capping mechanism (2), a cell platform (5), an upper support mechanism (6), and a lower pressing and shaping mechanism (8), among which, The feeding mechanism (1) is set horizontally for continuously and horizontally exporting the cap body (02) to be assembled. The cell platform (5) is spaced apart on the outside of the feeding mechanism (1). The cell body (01) to be assembled is placed on the cell platform (5), and the cell body (01) is adsorbed and pressed. The detection mechanism is set between the feeding mechanism (1) and the cell platform (5) and is used to take pictures of the detection cap (02) and the detection cell body (01) from the vertical and horizontal directions before assembly. The upper support mechanism (6) and the lower pressing and shaping mechanism (8) are located on the upper and lower sides of the cell platform (5), respectively, and press and flatten the horizontally extending tabs of the cell body (01) from below and above. The capping mechanism (2) is installed between the feeding mechanism (1) and the cell platform (5). The capping mechanism (2) takes out the cap body (02) from the feeding mechanism (1), rotates the cap body (02) to the vertical direction, and then puts the cap body (02) through the electrode tab and assembles it on the cell body (01). The cell platform (5) includes a platform support (51), a bearing suction seat (52), a guide limiting seat (53), a piezoelectric cell assembly, and a pressure electrode assembly (58). The platform support (51) is horizontally arranged. The bearing suction seat (52) is horizontally arranged on the platform support (51), and at least two vacuum suction holes are arranged on the bearing suction seat (52). The cell body (01) to be assembled is horizontally arranged on the bearing suction seat (52) and is fixed by vacuum negative pressure generated by the vacuum suction holes. The platform support (51) has a through-hole. The guide limit seat (53) is located at the edge of the platform support (51) and on one side of the through groove (B). The guide limit seat (53) is provided with an arc-shaped limit bearing groove (C). The piezoelectric core assembly is located below the platform support (51) and extends above the platform support (51) to press the cell body (01) from above. The pressure tab assembly (58) is located below the platform support (51) and extends upward to synchronously press and fit onto the cap (02) of the cell body (01) from above.

2. The automatic capping device for lithium battery cells according to claim 1, characterized in that: The capping mechanism (2) includes a bracket (21), a drive assembly, and a capping assembly (26). The bracket (21) is a U-shaped frame structure and is horizontally mounted above the feeding mechanism (1). The drive assembly is mounted on the bracket (21) and outputs linear power in a mutually perpendicular direction in the horizontal plane. The capping assembly (26) is mounted on the drive assembly and moves between the feeding mechanism (1) and the cell platform (5) driven by the drive assembly, so as to take out the cap (02) at the feeding mechanism (1) and assemble the cap (02) onto the cell body (01) at the cell platform (5).

3. The automatic capping device for lithium battery cells according to claim 2, characterized in that: The drive assembly includes a first linear module (22), a first slide (23), a second linear module (24), and a lifting linear module (25). The first linear module (22) is horizontally disposed on one side of the bracket (21). The first slide (23) is horizontally disposed on the first linear module (22) and moves linearly driven by the first linear module (22). The second linear module (24) is disposed on the first slide (23) in a direction perpendicular to the first linear module (22). The lifting linear module (25) is connected to the output end of the second linear module (24) and outputs linear power in the vertical direction. The cap assembly (26) is disposed on the lifting linear module (25) and moves up and down driven by the lifting linear module (25).

4. The automatic capping device for lithium battery cells according to claim 3, characterized in that: The cap assembly (26) includes a support plate (261), a first rotary motor (262), a rotating seat (263), a support platform (264), a second rotary motor (265), a transmission belt (266), a transmission wheel (267), and a cap head (268). The support plate (261) is vertically connected to the output end of the lifting linear module (25). The first rotary motor (262) is vertically mounted on the side wall of the support plate (261), with its output end facing downwards and connected to a reducer. The output end of the reducer is horizontally mounted. The rotating seat (263) is vertically connected to the output end of the reducer and rotates in a vertical plane driven by the reducer. The support platform (264)... 4) Set on the side wall of the rotating seat (263) and extend horizontally outward; the second rotary motor (265) is horizontally set on the rotating seat (263), and a transmission wheel (267) is sleeved on the output end of the second rotary motor (265); the capped head (268) is horizontally set and rotatably inserted on the support (264), and a transmission wheel (267) is sleeved on one end of the capped head (268); the transmission belt (266) is respectively sleeved on the second rotary motor (265) and the transmission wheel (267) of the capped head (268), and the second rotary motor (265) drives the capped head (268) to rotate through the transmission belt (266) and the transmission wheel (267).

5. The automatic capping device for lithium battery cells according to claim 4, characterized in that: The capped head (268) includes a rotating shaft (2681), a capped support (2682), a buffer spring (2683), a capped slide (2684), a capped block (2685), and an air nozzle (2686). The rotating shaft (2681) is rotatably inserted into the support (264), and a transmission wheel (267) is fitted onto one end of the rotating shaft (2681). The capped support (2682) is located at the other end of the rotating shaft (2681) and is an L-shaped seat with one end protruding upwards. The capped slide (2684) is slidably mounted on the capped support (2682). Two buffer springs (2683) are included. The parallel spacing arrangement includes a buffer spring (2683) with one end connected to the capped support (2682) and the other end connected to the capped slide (2684) to provide elastic buffering when the capped slide (2684) slides; the capped block (2685) is set on the capped support (2682), and the outer end of the capped block (2685) is provided with a U-shaped opening groove (A); the groove (A) is provided with vacuum suction holes; the capped block (2685) is provided with an air passage, one end of which is connected to the vacuum suction hole; the air nozzle (2686) is set on the side of the capped block (2685) and connected to the other end of the air passage for vacuum pumping, so as to adsorb the cap (02) in the groove (A) through vacuum negative pressure.

6. The automatic capping device for lithium battery cells according to claim 1, characterized in that: The testing mechanism includes a first testing mechanism (3), a second testing mechanism (4), and a third testing mechanism (7). The second testing mechanism (4) is mounted above the feeding mechanism (1) and is used to take downward photos of the cap body (02) that is horizontally extended from the feeding mechanism (1). The first testing mechanism (3) is located between the feeding mechanism (1) and the cell platform (5). The first testing mechanism (3) takes photos of the cap body (02) that is taken out from the feeding mechanism (1) and rotated to the vertical direction along the horizontal direction. The third testing mechanism (7) is mounted above the cell platform (5) and is used to test the cell body (01) or the cap body (02). The second detection mechanism (4) includes a detection bracket (41), a detection slide rail (42), a detection slide block (43), an adjustment cap (44), an adjustment rod (45), a first CCD lens (46), a light source bracket (47), and a first light source (48). The detection bracket (41) is mounted above the feeding mechanism (1); the detection slide rail (42) is vertically mounted on the side wall of the detection bracket (41); the detection slide block (43) is slidably embedded in the detection slide rail (42); and the adjustment rod (45) is vertically inserted into the detection bracket (41) and the detection slide block (43), and is connected to the detection... The bracket (41) is threadedly connected to the detection slide (43); the adjustment cap (44) is set on the top of the adjustment rod (45), and the adjustment cap (44) is rotated to drive the adjustment rod (45) to rotate, so as to drive the detection slide (43) to move up and down; the first CCD lens (46) is set on the detection slide (43) and the lens is set downward; the light source bracket (47) is set below the detection slide (43); the first light source (48) is set on the light source bracket (47) and is used to emit a downward shooting light source.

7. The automatic capping device for lithium battery cells according to claim 1, characterized in that: The piezoelectric cell assembly includes a pressing cylinder (54), a pressing shaft (55), a pressing block (56), and a guide roller (57). The pressing cylinder (54) is located below the platform support (51) with its output end facing upward. The pressing shaft (55) is vertically connected to the output end of the pressing cylinder (54) and extends upward through the platform support (51). The pressing block (56) is horizontally located on top of the pressing shaft (55), with one end of the pressing block (56) extending horizontally above the cell body (01). The guide roller (57) is located at the other end of the pressing block (56) and extends into the limiting bearing groove (C) of the guide limiting seat (53). The pressing cylinder (54) drives the pressing block (56) to move up and down through the pressing shaft (55) to press it flat on the cell body (01) from above, and slides in the limiting bearing groove (C) through the guide roller (57) for guiding and limiting.

8. The automatic capping device for lithium battery cells according to claim 1, characterized in that: The pressure tab assembly (58) includes a support block (581), a first slider (582), a first cylinder (583), a second slider (584), a second cylinder (585), a lower pressure plate (586), a first spring (587), and a second spring (588). The support block (581) is horizontally positioned at the bottom of the platform support (51), and one side edge of the support block (581) has a support portion extending downwards perpendicular to the support block (581). The first slider (582) has an L-shaped block structure, and one side plate of the first slider (582) is slidably connected to the support block (581). On the side wall of the first slider (582); the first cylinder (583) is mounted on the first slider (582), and the output end of the first cylinder (583) passes through the first slider (582) and pushes against the support. When the first cylinder (583) outputs power, its output end pushes against the support. The reaction force of the support pushes the first cylinder (583) and the first slider (582) to slide on the support block (581); the second slider (584) is slidably mounted on the other side plate of the first slider (582). One side of the second slider (584) first extends upward through the through groove (B) and then extends horizontally to the battery cell. Above the electrode tab of the body (01); the second cylinder (585) is disposed on the second slider (584), the second cylinder (585) outputs power in a direction perpendicular to the first cylinder (583), the output end of the second cylinder (585) passes through the second slider (584) and pushes against the first slider (582), the output power of the second cylinder (585) pushes against the first slider (582), the reaction force of the first slider (582) pushes the second slider (584) to move linearly; the lower pressure plate (586) is disposed at the part where the second slider (584) extends horizontally to the top of the electrode tab, the lower pressure plate (586) Move with the second slider (584) to press down on the shaping electrode from above; the two ends of the first spring (587) are respectively connected to the first slider (582) and the support block (581). In the natural state, the elastic force of the first spring (587) pulls the first slider (582) in the opposite direction to the first cylinder (583); the two ends of the second spring (588) are respectively connected to the second slider (584) and the first slider (582). In the natural state, the elastic force of the second spring (588) pulls the second slider (584) in the opposite direction to the second cylinder (585).

9. A cell assembly machine including the automatic capping device for lithium battery cells as described in claim 1.

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