Sodium-ion battery pole piece dividing device

Abstract

The application discloses a sodium ion battery pole piece dividing device, characterized in that the dividing device comprises a support rack, a front section flattening device, a middle section dividing device, a tail section pole piece dividing device and a control console. The device is used for cutting and dividing large-size sodium ion battery pole pieces, facilitating subsequent sodium ion battery production and use, and capable of reducing the phenomena of pole piece supporting and grinding wear, pulling and tearing, incomplete cutting and the like during the cutting and dividing process, and is suitable for dividing and using large-size sodium ion battery pole pieces.

Description

Technical Field

[0001] This invention relates to the field of sodium-ion new energy batteries, specifically to a sodium-ion battery electrode rewinding device. Background Technology

[0002] In recent years, my country has established a sound industrial chain encompassing wind power, photovoltaics, and power batteries in the new energy sector, which has led to the rapid development of power batteries in China. Currently, the domestic power battery market primarily uses lithium-ion batteries. However, due to the continuously rising international lithium ore prices and the relatively low proven lithium reserves in my country, the country has proposed developing the sodium-ion battery industry and has subsequently introduced a series of policies to promote its development.

[0003] Sodium-ion battery electrodes are a crucial component of sodium-ion batteries, directly impacting their performance and lifespan. To facilitate transportation, sodium-ion battery electrodes are typically shipped in large rolls, necessitating cutting and slitting before use. Currently, there are two main methods for cutting and slitting sodium-ion battery electrodes: punching and rolling. The punching method suffers from a tendency for collapse at the cut surface, affecting the quality of the slitting electrode. The rolling method is prone to incomplete cutting and adhesion, hindering subsequent slitting. Therefore, this invention selects and integrates the punching and rolling methods, ultimately designing a sodium-ion battery electrode slitting device. Summary of the Invention

[0004] This invention provides a sodium-ion battery electrode slitting device, the purpose of which is to cut and slitting large-size sodium-ion battery electrode rolls to facilitate subsequent sodium-ion battery production.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A sodium-ion battery electrode slitting device, characterized in that the slitting device includes a support frame, a front-end smoothing device, a middle-end slitting device, a rear-end electrode slitting device, and a control console. The support frame includes a support frame, a support table, an electrode holder, and a winding box. The support table is mounted on the support frame, the electrode holder is mounted on the left side of the support frame, and the winding box is mounted on the lower right side of the support frame. The front-end smoothing device includes a first smoothing roller, a second smoothing roller, a pulling roller, and a pressing smoothing device. The first smoothing roller is located behind the electrode holder. The pull roller is located between the first smoothing roller and the second smoothing roller. The pressing and smoothing device is installed between the second smoothing roller and the intermediate slitting device. The intermediate slitting device consists of an embossing device and a cutting device. The embossing device is installed to the right of the pressing and smoothing device, and the cutting device is installed to the right of the embossing device. The tail section electrode sheet slitting device includes a slitting guide channel and a winding reel device. The slitting guide channel is installed immediately after the cutting device. The tail section electrode sheet slitting device is installed in the winding box. The control console is installed on the far right of the support frame. The embossing... The device includes a support column, a first support plate, a second support plate, an embossing knife assembly, and a pressing cylinder. Both the first and second support plates are hollow plates. The bottom of the support column is fixed to a support platform. The first support plate is fixed to the lower middle part of the support column, and the second support plate is fixed to the top of the support column. The pressing cylinder is fixed to the second support plate. The embossing knife assembly is embedded in the first support plate and consists of serrated embossing knives and embossing knife holders. The embossing knife holders are embedded in the first support plate and have a knife groove at the bottom for serrated embossing. The blade is installed in the blade groove, and the top of the embossing blade holder is connected to the push rod of the pressing cylinder. The serrated embossing blade is used to press and cut pre-cut lines on the electrode sheet. The cutting device includes a cutting blade, a cutting blade holder, a drive motor, a transmission gear set, and a gear rail. The cutting blade is installed on the top of the cutting blade holder, and the cutting blade holder is installed on the gear rail. The drive motor and the transmission gear set are installed inside the cutting blade holder. The drive motor drives the transmission gear set to rotate, which further drives the cutting blade holder to slide on the gear rail, for cutting the electrode sheet along the pre-cut lines.

[0006] Preferably, the support platform has an embossing groove, a cutting hole, and a through hole. The embossing groove is a semi-submerged groove, and a buffer pad is installed in the embossing groove. The embossing groove is located directly below the embossing device. The cutting hole and the through hole are both through holes. The position of the cutting hole corresponds to the cutting device. The through hole is opened at an angle from left to right. The top of the through hole is immediately connected to the tail of the branch guide channel, and the tail of the through hole leads to the winding box.

[0007] Preferably, the electrode holder comprises a front roller, a rear roller, a support plate, and a self-adjusting bracket. The front roller and the rear roller are both mounted on the support plate, and one end of the self-adjusting bracket is connected to the support plate and the other end is connected to the support bracket.

[0008] Preferably, the self-adjusting bracket consists of a support rod, a tension adjustment device, a support plate, and a fixed rotating shaft. The support plate is embedded in the support rod, and the two ends of the tension adjustment device are fixed to the support frame and the support rod, respectively. The tail end of the support rod is mounted on the support frame via the fixed rotating shaft.

[0009] Preferably, the pull roller consists of an active roller, a passive roller, a frame, a power transmission gear, a transmission chain, and a stepper motor a. The power transmission gear is mounted on the active roller and the passive roller. The active roller and the passive roller are mounted on the frame, with the active roller located below the passive roller. The transmission chain connects the stepper motor a to the power transmission gear on the active roller.

[0010] Preferably, the pressing and smoothing device includes a clamp, a stepper motor b, a pressing roller, a transmission chain, and a power gear set. The stepper motor b is mounted on the clamp, the power gear set is mounted on the pressing roller and the stepper motor b, the transmission chain meshes with the power gear set, and the diameter of the pressing roller is the same as the diameter of the driving roller.

[0011] Preferably, the serrated embossing knife consists of a connecting seat and a detachable blade head. The connecting seat has a blade head fixing groove, and the tail of the detachable blade head is fixed in the blade head fixing groove. The blades of the detachable blade head maintain the same orientation.

[0012] Preferably, the left and right ends of the toothed rail gradually sink down, and there are flexible limiting blocks at the left and right ends of the toothed rail.

[0013] Preferably, there are two sets of branching guide channels. The two sets of guide channels gradually branch into a "V" shape after the cutting hole. The tails of the two sets of guide channels extend beyond the lower through hole, but the extension length does not exceed 1 / 2 of the width of the lower through hole. A smooth rotating roller is installed at the tail of the guide channel.

[0014] Preferably, the reel device consists of a through-shaft stepper motor, a bearing, a clamping cylinder, a reel retainer, and a foot switch. There are two reel retainers, one of which passes through the bearing and is connected to the through-shaft stepper motor, and the other of which passes through the bearing and is connected to the clamping cylinder. The foot switch controls the operation of the clamping cylinder, and further controls the reel retainer connected to the clamping cylinder to clamp the reel.

[0015] Preferably, the winding box includes two winding chambers and a power chamber, with the power chamber located between the two winding chambers. The power chamber is equipped with a through-shaft stepper motor and a foot switch for the winding device. The winding chamber is equipped with a bearing, a clamping cylinder, and a winding device holder for the winding device. The bottom of the winding chamber is connected to a feeding platform.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through optimized design and combination of a support frame, a front-end smoothing device, a middle-end slitting device, a rear-end electrode sheet rewinding device, and a control console, forms a sodium-ion battery electrode sheet rewinding device. This invention employs a pre-embossing followed by cutting method, combining the advantages of slitting and rolling, enabling safe, continuous, efficient, and stable cutting and rewinding of large-size sodium-ion battery electrodes. Specifically: The optimally designed support platform facilitates the cutting of sodium-ion battery electrodes by the mid-section cutting structure and also protects the serrated embossing knife.

[0017] The preferred design of the front smoothing device can smooth the electrode sheet and prevent tearing caused by pulling during the cutting process.

[0018] The optimally designed mid-section slitting device adopts an embossing method before cutting, combining the advantages of slitting and rolling, which can effectively reduce the collapse and adhesion of the cut surface.

[0019] The optimally designed tail-end electrode slitting device can significantly reduce the wear of the electrode during the winding process and increase the winding quality of the electrode. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention (the arrows in the diagram represent the direction of the electrode sheet's movement in the present invention); Figure 2 A schematic diagram of the supporting platform structure; Figure 3 This is a schematic diagram of the electrode support structure; Figure 4 A schematic diagram of the pressing and smoothing device; Figure 5 This is a schematic diagram of the embossing device. Figure 6 This is a schematic diagram of the cutting device (A shows the device with a cutting blade holder, B shows the device without a cutting blade holder); Figure 7 This is a schematic diagram of the reel assembly structure; The corresponding components are marked in the diagram: Support frame 1, support table 10, embossing groove 15, cutting hole 16, lower through hole 17, electrode bracket 2, front idler roller 201, tail idler roller 202, support plate 203, self-adjusting bracket 18, support connecting rod 1801, tension adjustment device 1803, support plate 1802, fixed rotating shaft 1804, winding box 9, winding chamber 901, power chamber 902.

[0021] The components include: front-end smoothing device 3, first smoothing roller 301, second smoothing roller 303, pull roller 302, active rotating roller 13, passive rotating roller, frame 12, stepper motor a14, pressing smoothing device 11, clamp 1101, stepper motor b1103, and pressing rotating roller 1102.

[0022] Embossing device 4, support column 401, first support plate 402, second support plate 403, embossing knife set 405, serrated embossing knife 19, pressing cylinder 404, cutting device 5, cutting knife 503, cutting knife holder 502, drive motor 506, transmission gear set 505, gear rail 501, flexible limiting block 504.

[0023] Branching guide channel 6, smooth rotating roller 7, reel device 20, through-shaft stepper motor 2003, bearing 2004, clamping cylinder 2001, reel retainer 2002.

[0024] Console 8. Detailed Implementation

[0025] To clearly illustrate the technical solutions described in this invention, the technical solutions described in this invention will be described in detail below with reference to the accompanying drawings. Specific embodiments are as follows: See appendix Figure 1-7A sodium-ion battery electrode slitting device, characterized in that the slitting device includes a support frame, a front smoothing device 3, a middle slitting device, a rear electrode slitting device, and a control console 8. The support frame includes a support frame 1, a support table 10, an electrode holder 2, and a winding box 9. The support table 10 is mounted on the support frame 1, the electrode holder 2 is mounted on the left side of the support frame 1, and the winding box 9 is mounted on the lower right side of the support frame 1. The front smoothing device 3 includes a first smoothing roller 301, a second smoothing roller 303, a pulling roller 302, and a pressing smoothing device 11. The first smoothing roller 301 is located behind the electrode holder 2, and the pulling roller 302 is located behind the first smoothing roller 303. Between roller 301 and the second smoothing roller 303, the pressing and smoothing device 11 is installed between the second smoothing roller 303 and the intermediate slitting device. The intermediate slitting device consists of an embossing device 4 and a cutting device 5. The embossing device 4 is installed to the right of the pressing and smoothing device 11, and the cutting device 5 is installed to the right of the embossing device 4. The tail section electrode sheet slitting device includes a separating guide channel 6 and a winding reel device 20. The separating guide channel 6 is installed close to the cutting device 5. The tail section electrode sheet slitting device is installed in the winding box 9. The control console 8 is installed on the far right of the support frame. The embossing device 4 includes a support column 401, a first support plate 402, and a second support plate 403. 3. Embossing knife assembly 405 and pressing cylinder 404, the first support plate 402 and the second support plate 403 are both hollow plates, the bottom of the support column 401 is fixed on the support platform 10, the first support plate 402 is fixed in the lower middle part of the support column 401, the second support plate 403 is fixed in the top of the support column 401, the pressing cylinder 404 is fixed on the second support plate 403, the embossing knife assembly 405 is embedded in the first support plate 402, the embossing knife assembly 405 is composed of a serrated embossing knife 19 and an embossing knife seat, the embossing knife seat is embedded in the first support plate 402, the bottom of the embossing knife seat has a knife groove, and the serrated embossing knife 19 is installed in the knife groove. The top of the embossing knife holder is connected to the push rod of the pressing cylinder 404. The serrated embossing knife 19 is used to press and cut pre-cut lines on the electrode sheet. The cutting device 5 includes a cutting knife 503, a cutting knife holder 502, a drive motor 506, a transmission gear set 505, and a gear rail 501. The cutting knife 503 is installed on the top of the cutting knife holder 502. The cutting knife holder 502 is installed on the gear rail 501. The drive motor 506 and the transmission gear set 505 are installed inside the cutting knife holder 502. The drive motor 506 drives the transmission gear set 505 to rotate, which further drives the cutting knife holder 502 to slide on the gear rail 501, for cutting the electrode sheet along the pre-cut lines.

[0026] Preferably, the support platform 10 has an embossing groove 15, a cutting hole 16, and a lower through hole 17. The embossing groove 15 is a semi-submerged groove, and a buffer pad is installed in the embossing groove 15. The embossing groove 15 is located directly below the embossing device 4. The cutting hole 16 and the lower through hole 17 are both through holes. The position of the cutting hole 16 corresponds to the cutting device 5. The lower through hole 17 is opened obliquely from left to right. The top of the lower through hole 17 is closely connected to the tail of the branch guide channel 6, and the tail of the lower through hole 17 leads to the winding box 9.

[0027] Preferably, the electrode holder 2 comprises a front roller 201, a rear roller 202, a support plate 203, and a self-adjusting bracket 18. The front roller 201 and the rear roller 202 are both mounted on the support plate 203, and one end of the self-adjusting bracket 18 is connected to the support plate 203 and the other end is connected to the support frame 1.

[0028] Preferably, the self-adjusting bracket 18 is composed of a support rod 1801, a tension adjustment device 1803, a support plate 1802, and a fixed rotating shaft 1804. The support plate 1802 is embedded in the support rod 1801. The two ends of the tension adjustment device 1803 are respectively fixed to the support frame 1 and the support rod 1801. The tail end of the support rod 1801 is mounted on the support frame 1 through the fixed rotating shaft 1804.

[0029] Preferably, the pull roller 302 consists of an active roller 13, a passive roller, a frame 12, a power transmission gear, a transmission chain, and a stepper motor a14. The power transmission gear is mounted on the active roller 13 and the passive roller. The active roller 13 and the passive roller are mounted on the frame 12, with the active roller 13 located below the passive roller. The transmission chain connects the stepper motor a14 to the power transmission gear on the active roller 13.

[0030] Preferably, the pressing and smoothing device 11 includes a clamp 1101, a stepper motor b1103, a pressing roller 1102, a transmission chain, and a power gear set. The stepper motor b1103 is mounted on the clamp 1101, and the power gear set is mounted on the pressing roller 1102 and the stepper motor b1103. The transmission chain meshes with the power gear set, and the diameter of the pressing roller 1102 is the same as the diameter of the driving roller 13.

[0031] Preferably, the serrated embossing knife 19 consists of a connecting seat and a detachable blade head. The connecting seat has a blade head fixing groove, and the tail of the detachable blade head is fixed in the blade head fixing groove. The blades of the detachable blade head maintain the same orientation.

[0032] Preferably, the left and right ends of the toothed rail 501 gradually sink down, and there are flexible limiting blocks 504 at the left and right ends of the toothed rail 501.

[0033] Preferably, there are two sets of branching guide channels 6. The two sets of guide channels gradually branch into a "V" shape after the cutting hole 16. The tails of the two sets of guide channels extend beyond the position of the lower through hole 17, but the extension length does not exceed 1 / 2 of the width of the lower through hole 17. A smooth rotating roller 7 is installed at the tail of the guide channel.

[0034] Preferably, the reel device 20 consists of a through-shaft stepper motor 2003, a bearing 2004, a clamping cylinder 2001, a reel retainer 2002, and a foot switch. There are two reel retainers 2002. One reel retainer 2002 passes through the bearing 2004 and is connected to the through-shaft stepper motor 2003. The other reel retainer 2002 passes through the bearing 2004 and is connected to the clamping cylinder 2001. The foot switch controls the operation of the clamping cylinder 2001, and further controls the reel retainer 2002 connected to the clamping cylinder 2001 to clamp the reel.

[0035] Preferably, the winding box 9 includes two winding chambers 901 and a power chamber 902. The power chamber 902 is located between the two winding chambers 901. The power chamber 902 is equipped with a through-shaft stepper motor 2003 and a foot switch from the reel device 20. The winding chamber 901 is equipped with a bearing 2004, a clamping cylinder 2001, and a reel retainer 2002 from the reel device 20. The bottom of the winding chamber 901 is connected to a feeding platform.

[0036] See the instruction manual appendix Figure 1 The process for slitting large-size electrode rolls in this invention is as follows: First, it should be stated that the spool for large-size electrode rolls is not a component of this invention. During the first slitting process, the electrode roll needs to be manually extracted and passed through the bottom of the front roller 201 and out the top of the tail roller 202. Then, it enters the front smoothing device 3, passing through the bottom of the first smoothing roller 301, the middle of the pull roller 302, and the bottom of the second smoothing roller. It then passes through the pressing and smoothing device 11 and the middle slitting device in sequence. A section of the electrode is then manually slitted and introduced into the tail electrode slitting device through the slitting guide channel 6. When introducing the electrode, it needs to pass through the smoothing roller 7. The introduced electrode is then wound onto the reel. The foot switch is then pressed, at which point the clamping cylinder 2001 pushes the reel holder 2002 to fix the reel. The pressing and smoothing device 11 is then pressed down, causing the pressing roller 1102 to press against the electrode. Finally, the invention is started through the control cabinet, and the invention enters the automatic slitting state.

[0037] After entering the automatic slitting state, the active rotating roller 13 and the pressing rotating roller 1102 simultaneously provide assistance for the large-sized electrode sheets on the material tray of this invention. After passing through the front smoothing device 3, the electrode sheets first enter the embossing device 4, where the embossing device 4 presses out through-cut embossing lines (consistent with the shape of the embossing groove 15) on the electrode sheets. As the through-shaft stepper motor in the tail electrode sheet slitting device rotates, the electrode sheets gradually enter the area above the cutting device 5. At this time, the cutting device 5 operates, and the cutting blade 503 cuts the electrode sheets along the cutting hole 16. After slitting, the electrode sheets enter the final slitting along the slitting guide channel 6.

[0038] See the instruction manual appendix Figure 3 The front roller 201 and the rear roller 202 in the electrode holder 2 are used to assist in positioning and limiting the electrode sheets on the material tray being extracted. The support plate 1802 in the electrode holder 2 can further position and limit the electrode sheets, so that the electrode sheets can enter the middle section slitting device flat and accurately. The self-adjusting bracket 18 adjusts the tension of the electrode sheets through the tension adjustment device 1803 to prevent the electrode sheets from tearing or dragging on the ground during the extraction process.

[0039] See the instruction manual appendix Figure 4 The clamps 1101 in the pressing and smoothing device 11 are installed on both sides of the support platform 10. The pressing and smoothing device 11 ensures that the electrode sheets are laid flat before entering the intermediate slitting device, and also provides assistance for pulling large-size electrode sheet rolls. After the electrode sheets are manually laid on the present invention, the pressing and smoothing device 11 is pressed down, and the present invention can be started through the control console 8. After the present invention is started, the stepper motor b1103 drives the power gear set through the transmission chain, which further drives the pressing roller 1102 to rotate. When the pressing roller 1102 rotates, it can smooth the electrode sheets in front of the intermediate slitting device and also has the function of pulling the electrode sheets.

[0040] See the instruction manual appendix Figure 5 The operation process and principle of the embossing device 4 are as follows: When embossing the electrode sheet, the electrode sheet first arrives directly below the embossing device 4. The pressing cylinder 404 pushes the embossing knife seat down through the cylinder push rod, further pushing the serrated embossing knife down. The pressed serrated embossing knife will pierce through the electrode sheet below and enter the embossing groove 15 of the support table 10. Then the pressing cylinder 404 drives the pressing knife seat to retract, thus completing one embossing action on the electrode sheet.

[0041] See the instruction manual appendix Figure 6The operation and working principle of the cutting device 5 are as follows: After the electrode sheet is embossed by the embossing device 4, embossed strips will be formed at equal intervals on the electrode sheet. At this time, the cutting device 5 cuts the electrode sheet, which will greatly reduce the adhesion of the electrode sheet after cutting. During cutting, the three sets of cutting devices 5 operate synchronously. The cutting knife holder 502 is driven by the drive motor 506 and moves left and right on the toothed rail 501. The left and right movement of the cutting knife holder 502 will drive the cutting knife 503 to move left and right, further cutting the electrode sheet located above. Due to the bridge-shaped structure design of the toothed rail 501, when the cutting knife holder 502 moves to the left and right ends of the toothed rail 501, it will descend, further lowering the cutting track and preventing the cutting knife 503 from causing injury to personnel when the equipment is not running.

[0042] See the instruction manual appendix Figure 7 The operation and principle of the dividing guide channel 6 are as follows: The function of the dividing guide channel 6 is to guide the electrode sheets cut by the cutting device 5 to the winding device. Since the two sets of guide channels gradually branch into a "V" shape after the cutting hole 16, after the electrode sheets pass through the cutting device 5, as the winding device continuously winds the electrode sheets, the electrode sheets will gradually separate according to the dividing guide channel 6. The smooth rotating roller 7 at the tail can prevent wear damage to the bottom of the electrode sheets during the winding process.

[0043] In the winding device 20, the through-shaft stepper motor 2003 winds up the slit electrode sheets, further assisting the forward movement of the electrode sheets behind the front smoothing device 3. When the winding device 20 is running, first, the foot switch is pressed, at which point the clamping cylinder 2001 retracts the connected winding retainer 2002, then the empty electrode sheet winding is pushed between the two winding retainers 2002 and lifted. The foot switch is pressed again, at which point the clamping cylinder 2001 pushes out the connected winding retainer 2002 to fix the empty electrode sheet winding. Then, the electrode sheet head is manually wound onto the controlled electrode sheet winding, and finally, the invention is started via the control console 8. After starting, the through-shaft stepper motor 2003 winds up a fixed length of electrode sheet with each step. The length of electrode sheet wound by the through-shaft stepper motor 2003 each time is the same as the length of the large-size electrode sheet extracted by stepper motors a14 and b1103.

[0044] The spatial orientations mentioned in this invention, such as up, down, left, right, front, and back, are based on the spatial positional relationships in the accompanying drawings and are only for the purpose of facilitating the description of the technical solutions described in this invention.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Those skilled in the art can modify or improve the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A sodium-ion battery electrode rewinding device, characterized in that... The slitting device includes a support frame, a front-end smoothing device, a middle-end slitting device, a rear-end electrode slitting device, and a control console. The support frame includes a support frame, a support table, an electrode holder, and a winding box. The support table is mounted on the support frame, the electrode holder is mounted on the left side of the support frame, and the winding box is mounted on the lower right side of the support frame. The front-end smoothing device includes a first smoothing roller, a second smoothing roller, a pulling roller, and a pressing smoothing device. The first smoothing roller is located behind the electrode holder, and the pulling roller is located between the first smoothing roller and the second smoothing roller. Between the flat rollers, the pressing and smoothing device is installed between the second smoothing roller and the intermediate slitting device. The intermediate slitting device consists of an embossing device and a cutting device. The embossing device is installed to the right of the pressing and smoothing device, and the cutting device is installed to the right of the embossing device. The tail section electrode sheet slitting device includes a slitting guide channel and a winding reel device. The slitting guide channel is installed immediately after the cutting device. The tail section electrode sheet slitting device is installed in the winding box. The control console is installed on the far right of the support frame. The embossing device includes a support column and a first... The system comprises a support plate, a second support plate, an embossing knife assembly, and a pressing cylinder. Both the first and second support plates are hollow plates. The bottom of the support column is fixed to the support platform. The first support plate is fixed to the lower middle part of the support column, and the second support plate is fixed to the top of the support column. The pressing cylinder is fixed to the second support plate. The embossing knife assembly is embedded in the first support plate and consists of serrated embossing knives and embossing knife holders. The embossing knife holders are embedded in the first support plate and have a knife groove at the bottom. The serrated embossing knives are mounted on the knife grooves. In the groove, the top of the embossing knife holder is connected to the push rod of the pressing cylinder. The serrated embossing knife is used to press and cut pre-cut lines on the electrode sheet. The cutting device includes a cutting knife, a cutting knife holder, a drive motor, a transmission gear set, and a gear rail. The cutting knife is installed on the top of the cutting knife holder, the cutting knife holder is installed on the gear rail, and the drive motor and the transmission gear set are installed inside the cutting knife holder. The drive motor drives the transmission gear set to rotate, further driving the cutting knife holder to slide on the gear rail, for cutting the electrode sheet along the pre-cut lines.

2. The sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The support platform has embossing grooves, cutting holes, and under-holes. The embossing grooves are semi-submerged grooves with buffer pads installed inside. The embossing grooves are located directly below the embossing device. The cutting holes and under-holes are both through holes. The cutting holes are positioned corresponding to the cutting device. The under-holes are inclined from left to right, with the top of the under-holes connected to the tail of the branch guide channel. The tail of the under-holes leads to the winding box.

3. The sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The electrode holder comprises a front roller, a rear roller, a support plate, and a self-adjusting bracket. Both the front roller and the rear roller are mounted on the support plate. One end of the self-adjusting bracket is connected to the support plate, and the other end is connected to the support frame.

4. A sodium-ion battery electrode rewinding device according to claim 3, characterized in that... The self-adjusting bracket consists of a support rod, a tension adjustment device, a support plate, and a fixed rotating shaft. The support plate is embedded in the support rod. The two ends of the tension adjustment device are fixed to the support frame and the support rod, respectively. The tail end of the support rod is mounted on the support frame via the fixed rotating shaft.

5. A sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The pulsating roller consists of an active roller, a passive roller, a frame, a power transmission gear, a transmission chain, and a stepper motor a. The power transmission gear is mounted on the active roller and the passive roller. The active roller and the passive roller are mounted on the frame, with the active roller located below the passive roller. The transmission chain connects the stepper motor a to the power transmission gear on the active roller.

6. A sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The pressing and smoothing device includes a clamp, a stepper motor b, a pressing roller, a transmission chain, and a power gear set. The stepper motor b is mounted on the clamp, and the power gear set is mounted on the pressing roller and the stepper motor b. The transmission chain meshes with the power gear set, and the diameter of the pressing roller is the same as the diameter of the driving roller.

7. A sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The serrated embossing knife consists of a connecting seat and a detachable blade head. The connecting seat has a blade head fixing groove, and the tail of the detachable blade head is fixed in the blade head fixing groove. The blades of the detachable blade head always face the same direction.

8. A sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The toothed rail has a bridge-shaped structure that gradually sinks at both ends, and there are flexible limiting blocks at both ends.

9. A sodium-ion battery electrode rewinding device according to claim 1, characterized in that... There are two sets of branching guide channels. The two sets of guide channels gradually branch into a "V" shape after the cutting hole. The tails of the two sets of guide channels extend beyond the lower through hole, but the extension length does not exceed 1 / 2 of the width of the lower through hole. A smooth rotating roller is installed at the tail of the guide channel.

10. A sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The reel device consists of a through-shaft stepper motor, bearings, a clamping cylinder, a reel retainer, and a foot switch. There are two reel retainers. One reel retainer passes through the bearing and is connected to the through-shaft stepper motor. The other reel retainer passes through the bearing and is connected to the clamping cylinder. The foot switch controls the operation of the clamping cylinder, which in turn controls the reel retainer connected to the clamping cylinder to clamp the reel.

11. A sodium-ion battery electrode rewinding device according to claim 1, characterized in that... The winding box includes two winding chambers and a power chamber. The power chamber is located between the two winding chambers. The power chamber is equipped with a through-shaft stepper motor and a foot switch for the winding device. The winding chamber is equipped with bearings, clamping cylinders, and winding device holders for the winding device. The bottom of the winding chamber is connected to a feeding platform.

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