Solid-state battery tab cutting device and cutting method

Abstract

The invention discloses a solid-state battery tab cutting device and method, and relates to the technical field of cutting equipment.The solid-state battery tab cutting device comprises a device base and further comprises a tab cutting mechanism, the tab cutting mechanism is arranged on the upper surface of the device base, and the tab cutting mechanism comprises a cutting supporting frame fixedly connected to the upper surface of the device base; the upper surface of the device base is fixedly connected with a supporting frame, the upper end of the supporting frame is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a rotating shaft, the front end of the rotating shaft is fixedly connected with a driving gear, and the surface of the rotating shaft is rotationally sleeved with a rotating arm; the end, away from the rotating shaft, of the rotating arm is rotationally connected with a driven gear, and the driving gear is meshed with the driven gear, so that the problems that cracks and burrs are possibly generated at the root of a battery tab during cutting, distortion is generated due to uneven stress, and the assembling precision and the assembling quality of a solid-state battery in the later period are influenced are solved.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, and more specifically, to a solid-state battery tab cutting device and cutting method. Background Technology

[0002] Solid-state battery tabs are specialized conductive connectors that connect the internal electrodes of a solid-state battery to the external circuitry. Before assembling a solid-state battery, the battery tabs need to be cut to ensure they are flat to meet assembly requirements. Therefore, a solid-state battery tab cutting device is required to cut the battery tabs.

[0003] During the cutting process of solid-state battery tabs, the material of solid-state battery tabs is relatively brittle. The traditional cutting method uses a high-speed rotating cutting tool, which may cause cracks and burrs at the root of the battery tabs, piercing the separator or encapsulation layer. Using the traditional straight cutting method to cut the battery tabs will cause twisting due to uneven force, affecting the assembly accuracy of the solid-state battery later. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention aims to provide a solid-state battery tab cutting device and cutting method to solve the problems that may cause cracks and burrs at the root of the battery tabs during cutting, as well as twisting due to uneven force, which affect the subsequent assembly accuracy and quality of solid-state batteries.

[0005] To solve the above problems, the present invention adopts the following technical solution: A solid-state battery tab cutting device includes a device base and a tab cutting mechanism. The tab cutting mechanism is disposed on the upper surface of the device base. The tab cutting mechanism includes a cutting support frame fixedly connected to the upper surface of the device base. A support frame is fixedly connected to the upper surface of the device base. A motor is fixedly connected to the upper end of the support frame. A rotating shaft is fixedly connected to the output shaft of the motor. A drive gear is fixedly connected to the front end of the rotating shaft. A rotating arm is rotatably sleeved on the surface of the rotating shaft. A driven gear is rotatably connected to the end of the rotating arm away from the rotating shaft. The drive gear meshes with the driven gear. A cutting circular blade is fixedly connected to the front surface of the driven gear. A cutting groove that mates with the cutting circular blade is opened on the inner arc surface of the cutting support frame.

[0006] Furthermore, it also includes a particle detachment mechanism, which is disposed on the upper surface of the device base. The particle detachment mechanism includes a frame fixedly connected to the surface of the motor. A squeezing wheel is rotatably connected inside the bottom end of the frame. A pressure frame is fixedly connected to the surface of the rotating arm. A bearing plate is fixedly connected to the end of the pressure frame away from the rotating arm. A blower airbag is fixedly connected to the surface of the bearing plate. An air outlet is connected to the front end of the blower airbag.

[0007] Furthermore, the blower airbag is internally fixedly connected with multiple first springs.

[0008] Furthermore, an airflow control box is fixedly connected to the rear end of the blower airbag. An airflow control box has a flow-blocking block inside, and two ventilation holes are opened on the surface of the flow-blocking block. An air inlet is opened at the rear end of the airflow control box, and an air outlet is opened at the front end of the airflow control box.

[0009] Furthermore, a second spring is fixedly connected inside the airflow control box, and the rear end of the second spring is fixedly connected to the surface of the flow-blocking block.

[0010] Furthermore, it also includes a leveling mechanism, which is disposed on the surface of the rotating arm. The leveling mechanism includes a support column fixedly connected to the surface of the rotating arm. A prying arm is rotatably inserted into the upper end of the support column. A rotating connecting plate is fixedly connected to the front end of the prying arm. A plurality of piston cylinders are fixedly connected to the left surface of the rotating connecting plate. A piston plate is disposed inside the piston cylinder. A connecting column is fixedly connected to the left surface of the piston plate. A connecting frame is fixedly connected to the left end of the connecting column. A rolling wheel is rotatably connected to the surface of the connecting frame.

[0011] Furthermore, the piston cylinder and the piston plate together form a piston assembly.

[0012] Furthermore, a pry handle is fixedly connected to the top of the pry arm, and an internally threaded cylinder is fixedly connected to the top of the support column, with a control screw inserted into the internal thread of the internally threaded cylinder.

[0013] Furthermore, a limiting arm is fixedly connected to the surface of the control screw, and a hook is fixedly connected to the short end of the limiting arm.

[0014] A method for cutting tabs in a solid-state battery includes the following steps: First, roll the paper cell into a cylindrical shape and place it in the cutting support frame so that the cutting part of the battery tab is located on the cutting groove. Next, pry the lever handle to rotate the crushing wheel to the cutting path that presses against the battery tabs; Then, rotate the control screw to move the latch to the front of the longitudinal end of the pry arm and hook the pry arm in place. Subsequently, the cutting blade is driven by a motor to roll inside the cutting groove, which can cut the battery tabs; At the same time, the rolling rollers press over the cut part of the battery tabs, flattening the slight twisting that occurred in the cut part of the battery tabs. As the cutting blade moves, it drives the air bladder to move, and the air bladder passes directly below the extrusion wheel; Subsequently, the air bladder is flattened by the extrusion wheel, and the air inside the air bladder is squeezed out, which can blow away the metal particles and debris remaining during the cutting process.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) In this solution, the cutting support frame can support the cut part of the battery tab during the cutting process, thereby reducing the probability of twisting at the cut end during the cutting process of the battery tab and improving the cutting quality of the battery tab.

[0016] (2) This solution uses rolling cutting to make the cutting force more uniform and the cutting end face quality higher. The contact between the cutting round blade and the tab is line contact and continuous shearing. The cutting force is applied evenly along the edge of the tab. The metal strip is sheared rather than pressed, which can greatly reduce the generation of microcracks and burrs and avoid puncturing the solid electrolyte after the solid battery is assembled, thus preventing short circuits.

[0017] (3) This solution can blow away the metal particles and debris remaining during the cutting process by flattening the blower airbag by the extrusion wheel and letting the air flow out through the air outlet, thus preventing the metal particles from remaining on the surface of the battery cell and causing a short circuit in the battery.

[0018] (4) In the process of cutting the battery tab, the rolling wheel presses over the cut part of the battery tab, flattening the slight twisting of the cut part of the battery tab, and further avoiding the twisting of the cut part of the battery tab, which would affect the quality of the solid-state battery assembly later. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the base portion of the device of the present invention; Figure 3 This is a schematic diagram of the structure of the cutting support frame portion of the present invention; Figure 4 This is a schematic diagram of the cutting circular blade part of the present invention; Figure 5 This is a schematic diagram of the internal structure of the blower airbag of the present invention; Figure 6 This is a schematic diagram of the framework portion of the present invention; Figure 7This is a schematic diagram of the leveling mechanism of the present invention; Figure 8 This is a schematic diagram of the piston cylinder and piston plate of the present invention.

[0020] Explanation of the labels in the diagram: 1. Device base; 201. Support frame; 202. Motor; 203. Cutting support frame; 204. Cutting circular blade; 205. Cutting groove; 206. Drive gear; 207. Rotating shaft; 208. Rotating arm; 209. Driven gear; 301. Blower airbag; 302. Pressure support frame; 303. Support plate; 304. Airflow control box; 305. Air outlet; 306. First spring; 307. Second spring; 308. Ventilation hole; 309. Air inlet; 310. Air outlet; 311. Frame; 312. Extrusion roller; 313. Baffle block; 401. Support column; 402. Pry handle; 403. Roller wheel; 404. Connecting frame; 405. Rotating connecting plate; 406. Control screw; 407. Limiting arm; 408. Piston cylinder; 409. Hook; 410. Pry arm; 411. Connecting column; 412. Piston plate; 413. Internal threaded cylinder. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4 A solid-state battery tab cutting device includes a device base 1 and a tab cutting mechanism. The tab cutting mechanism is disposed on the upper surface of the device base 1. The tab cutting mechanism includes a cutting support frame 203 fixedly connected to the upper surface of the device base 1. A support frame 201 is fixedly connected to the upper surface of the device base 1. A motor 202 is fixedly connected to the upper end of the support frame 201. A rotating shaft 207 is fixedly connected to the output shaft of the motor 202. A drive gear 206 is fixedly connected to the front end of the rotating shaft 207. A rotating arm 208 is rotatably sleeved on the surface of the rotating shaft 207. A driven gear 209 is rotatably connected to the end of the rotating arm 208 away from the rotating shaft 207. The drive gear 206 meshes with the driven gear 209. A cutting circular blade 204 is fixedly connected to the front surface of the driven gear 209. A cutting groove 205 that cooperates with the cutting circular blade 204 is opened on the inner arc surface of the cutting support frame 203.

[0023] By adopting the above technical solution, when cutting the battery tabs, the paper battery cell is rolled into a cylindrical shape and placed in the cutting support frame 203, so that the cutting part of the battery tab is located on the cutting groove 205. Then, the motor 202 provides power to drive the drive gear 206 to rotate, which in turn drives the driven gear 209 to rotate. Due to the traction of the rotating arm 208 and the drive of the drive gear 206, the driven gear 209 can rotate around the drive gear 206. At the same time, the driven gear 209 drives the cutting circular blade 204 to roll inside the cutting groove 205. When the cutting circular blade 204 presses over the battery tab... The device can cut the battery tabs. During the cutting process, the cutting support frame 203 can support the cut part of the battery tab, thereby reducing the probability of twisting at the cut end and improving the cutting quality of the battery tab. Furthermore, the rolling cutting method makes the cutting force more uniform and the quality of the cut end face higher. The contact between the cutting round blade 204 and the tab is line contact and continuous shearing. The cutting force is applied evenly along the edge of the tab. The metal strip is sheared rather than pressed, which can greatly reduce the generation of microcracks and burrs and avoid puncturing the solid electrolyte and causing a short circuit after the solid battery is assembled.

[0024] like Figure 3 , Figure 5 and Figure 6 As shown, it also includes a particle detachment mechanism, which is disposed on the upper surface of the device base 1. The particle detachment mechanism includes a frame 311 fixedly connected to the surface of the motor 202. A pressing wheel 312 is rotatably connected inside the bottom end of the frame 311. A pressure frame 302 is fixedly connected to the surface of the rotating arm 208. A bearing plate 303 is fixedly connected to the end of the pressure frame 302 away from the rotating arm 208. A blower airbag 301 is fixedly connected to the surface of the bearing plate 303. An air outlet 305 is connected to the front end of the blower airbag 301.

[0025] The blower airbag 301 has multiple first springs 306 fixedly connected inside. The rear end of the blower airbag 301 is fixedly connected to an airflow control box 304. The airflow control box 304 has a flow-blocking block 313 inside. The surface of the flow-blocking block 313 has two ventilation holes 308. The rear end of the airflow control box 304 has an air inlet 309. The front end of the airflow control box 304 has an air outlet 310. The airflow control box 304 has a second spring 307 fixedly connected inside. The rear end of the second spring 307 is fixedly connected to the surface of the flow-blocking block 313.

[0026] By adopting the above technical solution, during the cutting process of the battery tabs, as the cutting circular blade 204 moves, the rotating arm 208 also rotates synchronously, thereby driving the blower airbag 301 to move. When the blower airbag 301 moves to the lowest point, it passes directly under the extrusion roller 312. Subsequently, the blower airbag 301 is flattened by the extrusion roller 312. At this time, the first spring 306 is in a compressed state, and the air inside the blower airbag 301 is squeezed out. Since the flow blocking block 313 blocks the air inlet 309, it can prevent air from flowing out from the rear end, so that the airflow can only flow out through the air outlet 305, which can blow away the metal particles and debris remaining during the cutting process, preventing metal particles from remaining on the surface of the battery cell and causing a short circuit in the battery. Since after the battery tabs are cut, the metal particles and debris will fall to the bottom position due to gravity, the blower airbag 301 can blow away all the metal particles and debris at the lowest point.

[0027] When the blower airbag 301 moves away from under the compression roller 312, the first spring 306 pushes the blower airbag 301 to re-inflate and allow air to enter the blower airbag 301. During the process of air entering the blower airbag 301, the flow block 313 moves forward, and the second spring 307 with a small elastic coefficient is in a compressed state. The air first flows through the air inlet 309 and then through the ventilation hole 308 and enters the blower airbag 301 through the air outlet 310. This can reduce the flow rate and wind speed of air entering the blower airbag 301 through the air outlet 305, and reduce the probability of the airflow carrying metal particles and debris into the blower airbag 301, causing the blower airbag 301 to be blocked or punctured.

[0028] like Figure 7 and Figure 8 As shown, it also includes a leveling mechanism, which is disposed on the surface of the rotating arm 208. The leveling mechanism includes a support column 401 fixedly connected to the surface of the rotating arm 208. A prying arm 410 is rotatably inserted into the upper end of the support column 401. A rotating connecting plate 405 is fixedly connected to the front end of the prying arm 410. A plurality of piston cylinders 408 are fixedly connected to the left surface of the rotating connecting plate 405. A piston plate 412 is disposed inside the piston cylinder 408. A connecting column 411 is fixedly connected to the left surface of the piston plate 412. A connecting frame 404 is fixedly connected to the left end of the connecting column 411. A rolling wheel 403 is rotatably connected to the surface of the connecting frame 404. The piston cylinder 408 and the piston plate 412 form a piston assembly, which can adapt to battery tabs of different thicknesses. The elasticity provided by the compressible air inside the piston cylinder 408 allows the rolling wheel 403 to press the battery tabs tightly and release pressure more gently, avoiding hard impact damage to the surface of the battery tabs.

[0029] The top end of the prying arm 410 is fixedly connected to a prying handle 402, the top end of the support column 401 is fixedly connected to an internal threaded cylinder 413, the internal threaded cylinder 413 is threaded with a control screw 406, the surface of the control screw 406 is fixedly connected to a limiting arm 407, and the short end of the limiting arm 407 is fixedly connected to a hook 409.

[0030] By adopting the above technical solution, before cutting the battery tab, the pry handle 402 is turned to rotate the pry arm 410 and the rotating connecting plate 405, while the rolling wheel 403 rotates to press the cutting path of the battery tab. Then, the control screw 406 is rotated to rotate the limiting arm 407 and the hook 409, so that the hook 409 moves to the front of the longitudinal arm end of the pry arm 410 and hooks the pry arm 410. Since the thread surfaces of the control screw 406 and the inner threaded cylinder 413 are coated with a hard film with a high coefficient of friction, the frictional resistance between the control screw 406 and the inner threaded cylinder 413 is large. Therefore, the rotation of the pry arm 410 can be restricted without being subjected to huge external forces. After the battery tab is cut, the rolling wheel 403 presses over the cut part of the battery tab, flattening the slight twisting of the cut part of the battery tab, and further avoiding the twisting of the cut part of the battery tab, which would affect the subsequent solid-state battery assembly quality.

[0031] Instructions for use: First, roll the paper battery cell into a cylindrical shape and place it in the cutting support frame 203 so that the cutting part of the battery tab is located on the cutting groove 205. Next, pry handle 402 is turned to rotate crushing wheel 403 to the cutting path that presses against battery tabs; Then, rotate the control screw 406 to move the hook 409 to the front of the longitudinal arm end of the pry arm 410 and hook the pry arm 410. Subsequently, the motor 202 provides power to drive the cutting circular blade 204 to roll inside the cutting groove 205, which can cut the battery tabs; At the same time, the rolling roller 403 rolls over the cut part of the battery tab, flattening the slight twisting of the cut part of the battery tab. As the cutting circular blade 204 moves, it can drive the air bladder 301 to move, and the air bladder 301 passes directly below the extrusion roller 312. Subsequently, the air bladder 301 is flattened by the extrusion wheel 312, and the air inside the air bladder 301 is squeezed out, which can blow away the metal particles and debris remaining during the cutting process.

[0032] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A solid-state battery tab cutting device, comprising a device base (1), characterized in that: It also includes a tab cutting mechanism, which is disposed on the upper surface of the device base (1). The tab cutting mechanism includes a cutting support frame (203) fixedly connected to the upper surface of the device base (1). A support frame (201) is fixedly connected to the upper surface of the device base (1). A motor (202) is fixedly connected to the upper end of the support frame (201). A rotating shaft (207) is fixedly connected to the output shaft of the motor (202). An active gear is fixedly connected to the front end of the rotating shaft (207). The wheel (206) has a rotating arm (208) rotatably mounted on the surface of the rotating shaft (207). The end of the rotating arm (208) away from the rotating shaft (207) is rotatably connected to a driven gear (209). The driving gear (206) meshes with the driven gear (209). A cutting circular blade (204) is fixedly connected to the front surface of the driven gear (209). The inner arc surface of the cutting support frame (203) is provided with a cutting groove (205) that cooperates with the cutting circular blade (204).

2. The solid-state battery tab cutting device according to claim 1, characterized in that: It also includes a particle detachment mechanism, which is set on the upper surface of the device base (1). The particle detachment mechanism includes a frame (311) fixedly connected to the surface of the motor (202). A pressing wheel (312) is rotatably connected inside the bottom end of the frame (311). A pressure frame (302) is fixedly connected to the surface of the rotating arm (208). A bearing plate (303) is fixedly connected to the end of the pressure frame (302) away from the rotating arm (208). A blower airbag (301) is fixedly connected to the surface of the bearing plate (303). An air outlet (305) is connected to the front end of the blower airbag (301). When the motor (202) drives the rotating arm (208) to rotate and drive the cutting circular knife (204) to cut, the rotating arm (208) synchronously drives the blower airbag (301) to move past the pressing wheel (312), so that the blower airbag (301) is deformed by pressure and blows air to the cutting part through the air outlet (305).

3. The solid-state battery tab cutting device according to claim 2, characterized in that: The blower airbag (301) is internally fixedly connected with a plurality of first springs (306).

4. The solid-state battery tab cutting device according to claim 2, characterized in that: The air bladder (301) is fixedly connected to an airflow control box (304) at its rear end. An airflow control box (304) is provided with a flow-blocking block (313) inside. Two ventilation holes (308) are opened on the surface of the flow-blocking block (313). An air inlet (309) is opened at the rear end of the airflow control box (304), and an air outlet (310) is opened at the front end of the airflow control box (304).

5. A solid-state battery tab cutting device according to claim 4, characterized in that: The airflow control box (304) is internally fixedly connected to a second spring (307), and the rear end of the second spring (307) is fixedly connected to the surface of the flow-blocking block (313).

6. The solid-state battery tab cutting device according to claim 1, characterized in that: It also includes a leveling mechanism, which is disposed on the surface of the rotating arm (208). The leveling mechanism includes a support column (401) fixedly connected to the surface of the rotating arm (208). A prying arm (410) is rotatably inserted inside the upper end of the support column (401). A rotating connecting plate (405) is fixedly connected to the front end of the prying arm (410). A plurality of piston cylinders (408) are fixedly connected to the left surface of the rotating connecting plate (405). A piston plate (412) is disposed inside the piston cylinder (408). A connecting column (411) is fixedly connected to the left surface of the piston plate (412). A connecting frame (404) is fixedly connected to the left end of the connecting column (411). A rolling wheel (403) is rotatably connected to the surface of the connecting frame (404).

7. A solid-state battery tab cutting device according to claim 6, characterized in that: The piston cylinder (408) and piston plate (412) form a piston assembly.

8. A solid-state battery tab cutting device according to claim 6, characterized in that: The top end of the pry arm (410) is fixedly connected to a pry handle (402), and the top end of the support column (401) is fixedly connected to an internal threaded cylinder (413). A control screw (406) is inserted into the internal thread of the internal threaded cylinder (413).

9. A solid-state battery tab cutting device according to claim 8, characterized in that: A limiting arm (407) is fixedly connected to the surface of the control screw (406), and a hook (409) is fixedly connected to the short arm end of the limiting arm (407).

10. A method for cutting tabs in a solid-state battery, applicable to the solid-state battery tab cutting apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: First, roll the paper cell into a cylindrical shape and place it in the cutting support frame (203) so that the cutting part of the battery tab is located on the cutting groove (205); Next, pry the lever (402) to rotate the crushing wheel (403) to the cutting path that presses down on the battery tabs; Then, rotate the control screw (406) to move the hook (409) to the front of the longitudinal arm end of the pry arm (410) and hook the pry arm (410); Subsequently, the cutting circular blade (204) is driven to roll inside the cutting groove (205) by the power provided by the motor (202), which can cut the battery tabs; At the same time, the rolling wheel (403) rolls over the cut part of the battery tab, flattening the slight twisting of the cut part of the battery tab. As the cutting circular blade (204) moves, it can drive the air bladder (301) to move, and the air bladder (301) passes directly below the extrusion roller (312); Subsequently, the air bladder (301) is flattened by the extrusion wheel (312), and the air inside the air bladder (301) is squeezed out, which can blow away the metal particles and debris remaining during the cutting process.

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