An electrode tab cutting mechanism for solid-state battery processing

Abstract

The application discloses a tab cutting mechanism for solid-state battery processing and relates to the tab cutting technology of the solid-state battery. The tab cutting mechanism comprises a cutting base, a conveying platform installed in front of the cutting base, and a loading frame fixedly installed on the top surface of the conveying platform and used for loading a solid-state battery body. A cutting mechanism is arranged above the cutting base. The cutting mechanism comprises a cutting bevel, and the top end of the cutting bevel is fixedly connected with the bottom end of a transmission sliding block. The front surface of the transmission sliding block is provided with a positioning mechanism, and the positioning mechanism comprises a positioning support. The tab cutting mechanism for solid-state battery processing positions the solid-state battery body in the loading frame through the positioning support above the conveying base, cleans the granular dust when positioning the tab with the aid of the positioning pressing block, cuts the tab through the lifting of the cutting bevel, and cleans the tab waste with the aid of the scraping plate adhered to the cutting bevel, thereby improving the stability during the cutting operation.

Description

Technical Field

[0001] This invention relates to the field of solid-state battery tab cutting technology, specifically to a tab cutting mechanism for solid-state battery processing. Background Technology

[0002] Solid-state battery tab cutting refers to the critical process in solid-state battery manufacturing where the conductive metal parts (tabs) extending from the positive and negative electrodes are cut into specified shapes and sizes. The purpose is to ensure that the battery cell can be stably and efficiently connected to external circuits. This process directly affects the battery's conductivity, welding quality, and safety. The cut tabs need to be precisely matched with the subsequent welding stations to ensure tab alignment and welding strength. Proper cutting can avoid defects such as burrs and flash, reducing the risk of short circuits, which is especially critical in high-energy-density solid-state batteries.

[0003] Application CN101774041A discloses a tab cutting device that uses a cam transmission structure to convert the cam's rotational motion into the up-and-down motion of the upper cutter. Here, the cam uses the working principle of a crank to control the movement of the upper cutter. When the motor shaft rotates, the direction of the cam changes from vertical to horizontal, for example, driving the connecting rod to carry the upper cutter to move up and down. The motor only drives the cam to rotate by ±45 degrees, thereby making the cutting force of the upper cutter on the tab more effective and uniform, effectively avoiding the generation of burrs on the tab during cutting, and improving the cutting quality of the tab.

[0004] Application CN119387672A discloses a tab cutting fixture. The two sets of cutters are separately set and can be adjusted individually according to different cutting gap requirements, which can meet the cutting needs of various gaps. Furthermore, by using a positioning fixture with adjustable tightness combined with a height adjustment structure, it can achieve positioning of battery cells of various sizes without the need for additional tooling molds, thus improving the stability of the cutting operation. Compared with the existing technology of adding tooling molds, it also reduces production costs.

[0005] However, the above-disclosed solid-state battery tab cutting device still has the following problems in actual use: the cutting device is used to cut the tabs of solid-state batteries, but there is a tolerance gap between the solid-state battery and the positioning mechanism when the solid-state battery is being fed. Without additional intervention for positioning, the position of the electrode being cut will be tilted or deviated. At the same time, the squeezing operation during cutting and positioning is prone to causing the tabs to deform and wear due to the presence of particles, which will affect the stability of subsequent solid-state battery charging and discharging.

[0006] Therefore, we propose a tab cutting mechanism for solid-state battery processing to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a tab cutting mechanism for solid-state battery processing. This addresses the problem that existing cutting devices for solid-state batteries have tolerance gaps between the solid-state battery and the positioning mechanism during feeding. Without additional positioning intervention, the electrode may tilt or deviate during cutting. Furthermore, the extrusion operation during cutting and positioning can easily cause tab deformation and wear due to the presence of particles, affecting the subsequent charging and discharging stability of the solid-state battery.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a tab cutting mechanism for solid-state battery processing, comprising a cutting base and a conveying platform installed in front of the cutting base, wherein a loading frame for loading solid-state battery bodies is fixedly installed on the top surface of the conveying platform.

[0009] A cutting mechanism is provided above the cutting base, and the cutting mechanism includes a cutting hydraulic cylinder, and a transmission slider is fixedly installed at the bottom end of the telescopic rod of the cutting hydraulic cylinder.

[0010] The cutting mechanism includes a cutting bevel blade, and the top end of the cutting bevel blade is fixedly connected to the bottom end of the transmission slider.

[0011] The transmission slider has a positioning mechanism on its front side, and the positioning mechanism includes a positioning bracket. The inner side of the bottom end of the front side of the positioning bracket has an inclined structure to abut against the solid-state battery body to achieve positioning.

[0012] Preferably, the positioning mechanism includes a positioning bracket whose front end extends to the left and right sides of the front of the loading frame, and a lifting slide rod is slidably provided through the inner side of the front end of the symmetrically distributed positioning brackets by a return spring, and the lower end of the lifting slide rod is fixedly connected to the left and right sides of the top surface of the positioning contact plate.

[0013] Preferably, the positioning mechanism includes a positioning shaft, which is rotatably mounted at the center of the positioning touch plate via a bearing. The positioning shaft is located above the front of the solid-state battery body, and is driven by the positioning touch plate and the positioning bracket to adhere to the top surface of the solid-state battery body. The positioning bracket also presses the solid-state battery body to adjust the cutting position.

[0014] Preferably, the positioning mechanism includes a positioning block, and the upper left and right sides of the positioning block are fixedly connected to the lower end of the positioning slide rod. The upper end of the positioning slide rod slides through the interior of the transmission slider. Furthermore, the outer wall of the positioning slide rod is fitted with an anti-spring. Meanwhile, the positioning blocks are arranged in an inverted "L" shape.

[0015] Preferably, the positioning mechanism includes a one-way air supply sleeve, which is fixedly installed at the center of the top surface of the positioning block, and a sealing plug rod is slidably provided inside the air supply sleeve, with the upper end of the sealing plug rod fixedly installed at the front end of the transmission slider.

[0016] Preferably, the positioning mechanism includes a one-way delivery pipe that is connected to the lower end of the air supply sleeve, and the bottom end of the one-way delivery pipe extends into the lower end of the positioning block. The lower end of the positioning block is provided with dust removal slots at equal intervals, and the dust removal slots are connected to the one-way delivery pipe. The bottom end of the dust removal slots is located above the rear tab of the solid-state battery body.

[0017] Preferably, the bottom horizontal height of the cutting oblique blade included in the cutting mechanism is higher than the bottom horizontal height of the positioning block, and a scraping rotating plate is slidably attached to the back of the cutting oblique blade. The scraping rotating plate is rotatably connected to the left and right rear ends of the retaining crossbeam through a torsion spring, while the front end of the retaining crossbeam is fixedly installed on the outer end of the positioning block.

[0018] Preferably, the cutting mechanism includes a scraper plate that is inclined at the top and inward at the bottom. The scraper plate moves synchronously with the holding frame and the positioning block. The positioning block contacts the tab of the solid-state battery body before the cutting blade, assisting in the positioning of the solid-state battery body by compression.

[0019] Preferably, the cutting mechanism includes a cutting base, which is fixedly installed on the left and right sides of the front of the cutting base. The cutting base and the cutting oblique blade are distributed in a staggered manner. The cutting base is used to place the tabs of the solid-state battery body to prevent the tabs of the solid-state battery body from deforming when subjected to cutting force.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: This solid-state battery processing tab cutting mechanism positions the solid-state battery body inside the loading frame through a positioning bracket above the conveyor base, and the positioning pressure block assists in cleaning particulate dust during tab positioning. The tab is cut by the lifting and lowering of the cutting bevel blade, and at the same time, the scraping plate adheres to the cutting bevel blade to assist in cleaning the tab waste, thus improving the stability of the cutting operation. The specific details are as follows:

[0021] 1. The solid-state battery body is transported to the interior of the loading frame via a conveying platform and is matched with the cutting base. The cutting hydraulic cylinder drives the transmission slider and the positioning bracket to slide downwards. The inclined surface on the inner side of the front end of the positioning bracket squeezes the solid-state battery body, causing the solid-state battery body to slide backwards to the required cutting position for calibration.

[0022] Furthermore, the inner lifting slide rod and positioning contact plate of the positioning bracket descend, and the positioning shaft inside the positioning contact plate contacts the solid-state battery body. The lifting slide rod connected by the return spring drives the positioning contact plate to adjust the clamping force on the solid-state battery body. At the same time, the positioning shaft installed with the bearing can enable the solid-state battery body to adjust itself when moving back and forth, thereby avoiding misalignment due to force during subsequent cutting.

[0023] 2. The positioning block contacts the tabs of the solid-state battery body through the protrusions at both ends, causing the transmission slider to drive the sealing plug rod downward to squeeze the air inside the air supply sleeve. The air inside is transported to the positioning block through the one-way conveying pipe and sprayed downward through the dust removal slot to help clean the particulate dust on the battery tabs, thereby avoiding deformation and wear during cutting.

[0024] 3. The transmission slider drives the cutting slant blade to descend and cut the electrode tabs of the solid-state battery body. The scraper plate attached behind the cutting slant blade moves synchronously with the holding frame and the positioning block. Thus, during the cutting operation, the positioning block drives the holding frame and the scraper plate to be positioned above the cutting slant blade, thereby avoiding obstruction to the cutting operation.

[0025] Furthermore, the positioning slide rod on the front of the transmission slider drives the positioning pressure block to slide downward through the contact spring, so that the positioning pressure block drives the cross frame and the scraper plate behind to move synchronously, so that the scraper plate connected by the torsion spring is always in contact with the cutting slant blade, scraping off the tab waste stuck to the back of the cutting slant blade, so as to clean the cutting slant blade and improve the accuracy of subsequent cutting operations. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the solid-state battery body and the mounting frame of the present invention.

[0028] Figure 3 This is a three-dimensional structural diagram of the positioning bracket of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the positioning bracket of the present invention after it comes into contact with the solid-state battery body;

[0030] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0031] Figure 6 This is a three-dimensional structural diagram of the cutting base of the present invention;

[0032] Figure 7 This is a three-dimensional structural diagram of the positioning block of the present invention;

[0033] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0034] Figure 9 This is a schematic diagram of the sealing plug rod installation structure of the present invention;

[0035] Figure 10 This is a schematic diagram of the distribution of the scraper plate and the cutting slant blade of the present invention.

[0036] In the diagram: 1. Cutting base; 2. Conveying platform; 3. Solid-state battery body; 4. Loading frame; 5. Cutting hydraulic cylinder; 6. Transmission slider; 7. Cutting slant blade; 8. Positioning bracket; 9. Return spring; 10. Lifting slide bar; 11. Positioning contact plate; 12. Positioning rotating shaft; 13. Positioning pressure block; 14. Positioning slide bar; 15. Contact spring; 16. Air supply sleeve; 17. Sealing plug rod; 18. One-way conveying pipe; 19. Scraper plate; 20. Holding crossbar; 21. Cutting base; 22. Dust removal slot. Detailed Implementation

[0037] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1-10 The present invention provides the following technical solution:

[0039] Example 1: To address the problems existing in the tab cutting process of existing solid-state batteries, this example discloses the following technical solution: a tab cutting mechanism for solid-state battery processing, including a cutting base 1 and a conveying platform 2 installed in front of the cutting base 1, and a loading frame 4 for loading solid-state battery body 3 is fixedly installed on the top surface of the conveying platform 2; a cutting mechanism is provided above the cutting base 1, and the cutting mechanism includes a cutting hydraulic cylinder 5, and a transmission slider 6 is fixedly installed at the bottom end of the telescopic rod of the cutting hydraulic cylinder 5; a positioning mechanism is provided on the front side of the transmission slider 6, and the positioning mechanism includes a positioning bracket 8, and the inner side of the bottom end of the front side of the positioning bracket 8 has an inclined structure for contacting the solid-state battery body 3 to achieve positioning.

[0040] The positioning mechanism includes a positioning bracket 8 whose front end extends to the left and right sides of the front of the loading frame 4. The front inner side of the symmetrically distributed positioning bracket 8 is provided with a lifting slide rod 10 through a return spring 9. The lower end of the lifting slide rod 10 is fixedly connected to the left and right sides of the top surface of the positioning touch plate 11. The positioning mechanism includes a positioning shaft 12, which is rotatably mounted at the center of the inside of the positioning touch plate 11 through a bearing. The positioning shaft 12 is located above the front of the solid-state battery body 3. The positioning shaft 12 is driven by the positioning touch plate 11 and the positioning bracket 8 to adhere to the top surface of the solid-state battery body 3, and the positioning bracket 8 presses the solid-state battery body 3 to adjust the cutting position.

[0041] like Figures 2-5 As shown, when cutting the tabs of the solid-state battery body 3, the solid-state battery body 3 is first transported to the inside of the loading frame 4 by the conveying platform 2. The loading frame 4 aligns the solid-state battery body 3 with the cutting base 1. Then, the cutting hydraulic cylinder 5 above the cutting base 1 works, which drives the transmission slider 6 connected to the lower telescopic end to slide down synchronously with the positioning bracket 8. The positioning bracket 8 gradually contacts the side of the solid-state battery body 3 through the inner inclined surface below its front end, and squeezes the side of the solid-state battery body 3 to move during the descent, thereby causing the solid-state battery body 3 to fit against the inner side of the loading frame 4, thus achieving the required cutting position and avoiding deviation.

[0042] Furthermore, when the positioning brackets 8 on the left and right sides descend to position the solid-state battery body 3, the lifting slide rod 10 inside the positioning bracket 8 and the positioning touch plate 11 descend synchronously, and the positioning rotating shaft 12 inside the positioning touch plate 11 contacts the upper surface of the solid-state battery body 3. The lifting slide rod 10 connected by the return spring 9 drives the positioning touch plate 11 to adjust the pressing force on the solid-state battery body 3. At the same time, the positioning rotating shaft 12 with bearing can also make the solid-state battery body 3 adjust itself when moving back and forth, thereby avoiding misalignment due to force during subsequent cutting.

[0043] Example 2: To solve the problems existing in the tab cutting process of existing solid-state batteries, this example discloses the following technical solution: The positioning mechanism includes a positioning block 13, and the upper left and right sides of the positioning block 13 are fixedly connected to the lower end of the positioning slide rod 14. The upper end of the positioning slide rod 14 slides through the interior of the transmission slider 6. A contact spring 15 is sleeved on the outer wall of the positioning slide rod 14. The positioning block 13 is arranged in an inverted "L" shape. The positioning mechanism includes a one-way air supply sleeve 16, and the air supply sleeve 16 is fixedly installed at the center of the top surface of the positioning block 13. A sealing plug rod 17 is slidably installed inside the air supply sleeve 16, and the upper end of the sealing plug rod 17 is fixedly installed at the front end of the transmission slider 6.

[0044] The positioning mechanism includes a one-way delivery pipe 18 that is connected to the lower end of the air supply sleeve 16. The bottom end of the one-way delivery pipe 18 extends into the lower end of the positioning block 13. The lower end of the positioning block 13 is provided with dust removal slots 22 at equal intervals. The dust removal slots 22 are connected to the one-way delivery pipe 18. The bottom end of the dust removal slots 22 is located above the rear tab of the solid-state battery body 3.

[0045] like Figures 7-9 As shown, the cutting hydraulic cylinder 5 drives the transmission slider 6 at the bottom to slide down synchronously with the positioning block 13. The positioning block 13 contacts the tabs of the solid-state battery body 3 through its downward protruding structures at both ends, and presses the tabs onto the cutting base 21 on the front of the cutting base 1. Then, through the continuous descent of the transmission slider 6 and the stationary position of the positioning block 13, the transmission slider 6 drives the sealing plug rod 17 to squeeze the air inside the air supply sleeve 16 downward. The air inside the air supply sleeve 16 is transported to the inside of the through-connected positioning block 13 through the one-way conveying pipe 18, and sprayed downward through the dust removal slot 22 opened inside the positioning block 13, thereby helping to clean the particulate dust on the surface of the battery tabs, thus avoiding deformation and wear during cutting.

[0046] Example 3: In order to solve the problems existing in the tab cutting process of existing solid-state batteries, this example discloses the following technical solution: the cutting mechanism includes a cutting bevel 7, and the top end of the cutting bevel 7 is fixedly connected to the bottom end of the transmission slider 6; the bottom end of the cutting bevel 7 is horizontally higher than the bottom end of the positioning block 13, and a scraping rotating plate 19 is slidably attached to the back of the cutting bevel 7, and the scraping rotating plate 19 is rotatably connected to the left and right sides of the rear end of the holding crossbeam 20 through a torsion spring, while the front end of the holding crossbeam 20 is fixedly installed on the outer end of the positioning block 13.

[0047] The cutting mechanism includes a scraper plate 19 that is inclined outward at the top and inward at the bottom. The scraper plate 19 moves synchronously with the holding frame 20 and the positioning block 13. The positioning block 13 contacts the tab of the solid-state battery body 3 before the cutting blade 7, assisting in the positioning of the solid-state battery body 3 by compression. The cutting mechanism includes a cutting base 21, which is fixedly installed on the left and right sides of the front of the cutting base 1. The cutting base 21 and the cutting blade 7 are staggered in front and behind. The cutting base 21 is used to place the tab of the solid-state battery body 3 to prevent the tab of the solid-state battery body 3 from deforming when subjected to cutting force.

[0048] like Figure 6 , Figures 9-10As shown, the cutting hydraulic cylinder 5 drives the transmission slider 6 and the cutting slant blade 7 below to descend synchronously, and cuts the tabs of the solid battery body 3 after contact positioning. The scraper plate 19 attached behind the cutting slant blade 7 moves synchronously with the holding frame 20 and the positioning pressure block 13. Thus, during the cutting operation, the positioning pressure block 13 drives the holding frame 20 and the scraper plate 19 to be positioned above the cutting slant blade 7, thereby avoiding obstruction to the cutting operation.

[0049] Furthermore, after the cutting operation is completed, the transmission slider 6 drives the cutting slant blade 7 to slide upward. At the same time, the positioning slide rod 14 on the front of the transmission slider 6 drives the positioning pressure block 13 to slide downward through the contact spring 15. This allows the positioning pressure block 13 to drive the cross frame 20 to move synchronously with the scraper plate 19 behind it. The cutting slant blade 7 is in an upward state relative to the scraper plate 19, so that the scraper plate 19 connected by the torsion spring is always in contact with the cutting slant blade 7. This scrapes away the waste material stuck to the back of the cutting slant blade 7, thus cleaning the cutting slant blade 7 and improving the accuracy of subsequent cutting operations.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tab cutting mechanism for solid-state battery processing, comprising a cutting base (1) and a conveying platform (2) installed in front of the cutting base (1), wherein a loading frame (4) for loading solid-state battery body (3) is fixedly installed on the top surface of the conveying platform (2). Its features are, Also includes: A cutting mechanism is provided above the cutting base (1), and the cutting mechanism includes a cutting hydraulic cylinder (5), and a transmission slider (6) is fixedly installed at the bottom end of the telescopic rod of the cutting hydraulic cylinder (5). The cutting mechanism includes a cutting bevel blade (7), and the top end of the cutting bevel blade (7) is fixedly connected to the bottom end of the transmission slider (6). The front of the transmission slider (6) is provided with a positioning mechanism, and the positioning mechanism includes a positioning bracket (8). The inner side of the bottom end of the front of the positioning bracket (8) is inclined to abut against the solid battery body (3) to achieve positioning. The positioning mechanism includes a positioning bracket (8) whose front end extends to the left and right sides of the front of the loading frame (4), and the symmetrically distributed positioning bracket (8) has a lifting slide rod (10) slidably passing through the inner side of its front end via a reset spring (9), and the lower end of the lifting slide rod (10) is fixedly connected to the left and right sides of the top surface of the positioning touch plate (11). The positioning mechanism includes a positioning shaft (12), and the positioning shaft (12) is rotatably mounted on the internal center of the positioning touch plate (11) via a bearing. The positioning shaft (12) is located above the front of the solid battery body (3). The positioning shaft (12) is driven by the positioning touch plate (11) and the positioning bracket (8) to adhere to the top surface of the solid battery body (3), and the positioning bracket (8) presses the solid battery body (3) to adjust the cutting position. The positioning mechanism includes a positioning block (13), and the upper left and right sides of the positioning block (13) are fixedly connected to the lower end of the positioning slide rod (14). The upper end of the positioning slide rod (14) slides through the interior of the transmission slider (6). A resisting spring (15) is sleeved on the outer wall of the positioning slide rod (14). Meanwhile, the positioning block (13) is arranged in an inverted "L" shape. The cutting mechanism includes a cutting slant blade (7) whose bottom horizontal height is higher than that of the positioning block (13), and a scraper plate (19) is attached to and slides on the back of the cutting slant blade (7). The scraper plate (19) is rotatably connected to the left and right sides of the rear end of the retaining crossbar (20) by a torsion spring, while the front end of the retaining crossbar (20) is fixedly installed on the outer end of the positioning block (13). The cutting mechanism includes a scraper plate (19) that is arranged in an inclined manner with the upper end facing outward and the lower end facing inward. The scraper plate (19) moves synchronously with the holding frame (20) and the positioning block (13). The positioning block (13) contacts the tab of the solid battery body (3) before the cutting blade (7), assisting the solid battery body (3) in positioning by compression.

2. The electrode tab cutting mechanism for solid-state battery processing according to claim 1, characterized in that: The positioning mechanism includes a one-way air supply sleeve (16), and the air supply sleeve (16) is fixedly installed at the center of the top surface of the positioning pressure block (13). A sealing plug rod (17) is slidably provided inside the air supply sleeve (16), and the upper end of the sealing plug rod (17) is fixedly installed at the front end of the transmission slider (6).

3. The electrode tab cutting mechanism for solid-state battery processing according to claim 2, characterized in that: The positioning mechanism includes a one-way delivery pipe (18) that is connected to the lower end of the air supply sleeve (16), and the bottom end of the one-way delivery pipe (18) extends to the lower end of the positioning block (13). The lower end of the positioning block (13) is provided with dust removal slots (22) at equal intervals, and the dust removal slots (22) are connected to the one-way delivery pipe (18). The bottom end of the dust removal slots (22) is located above the rear tab of the solid-state battery body (3).

4. The electrode tab cutting mechanism for solid-state battery processing according to claim 1, characterized in that: The cutting mechanism includes a cutting base (21), which is fixedly installed on the left and right sides of the front of the cutting base (1). The cutting base (21) and the cutting oblique blade (7) are arranged in a staggered manner. The cutting base (21) is used to place the tabs of the solid battery body (3) to prevent the tabs of the solid battery body (3) from deforming when subjected to cutting force.

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