Rolling and slitting all-in-one machine for lithium battery pole piece

Abstract

The invention relates to the technical field of battery pole piece processing, and provides a lithium battery pole piece rolling and slitting all-in-one machine which comprises a rack, a carrier roller rotationally arranged on the rack, an extrusion roller arranged on one side of the carrier roller, a rolling space formed between the extrusion roller and the carrier roller and used for allowing the lithium battery pole piece to pass through, the extrusion roller is provided with a mounting groove, and the mounting groove is formed in the rack. The number of the installation grooves is two, the installation grooves are arranged in the axial direction of the extrusion roller, the anti-wrinkling pieces are arranged in the installation grooves in a sliding mode, the number of the anti-wrinkling pieces is two, when the anti-wrinkling pieces make contact with the lithium battery pole pieces, the two anti-wrinkling pieces can slide from the middle of the extrusion roller to the two ends of the extrusion roller, and the slitting roller is arranged on one side of an outlet of the rolling space. According to the technical scheme, the technical problem that in the prior art, during rolling machining of the battery pole piece, when rolling begins, the end portion is prone to wrinkling, and the pole piece is damaged is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of battery electrode sheet processing, and specifically, to a roll pressing and slitting integrated machine for lithium battery electrode sheets. Background Art

[0002] In the field of lithium battery production, the processing quality of lithium battery electrode sheets has a crucial impact on the performance and service life of lithium batteries. However, traditional lithium battery electrode sheet processing equipment has many problems in actual applications and is difficult to meet the requirements of modern lithium battery production for efficient and high-quality processing.

[0003] During the roll pressing process, due to uneven force on the electrode sheet and poor equipment stability, etc., the electrode sheet is prone to wrinkling. The existence of wrinkles not only affects the appearance quality of the electrode sheet, but may also cause uneven internal structure of the electrode sheet, thereby affecting the charge and discharge performance and service life of the lithium battery. Especially during the sheet threading process, the tightening operation of the separator film is more likely to cause the electrode sheet to wrinkle, and traditional equipment lacks effective anti-wrinkle measures and cannot solve this problem in a timely manner.

[0004] Traditional lithium battery electrode sheet processing equipment usually separates the two processes of roll pressing and slitting and needs to be completed on different equipment respectively. This not only increases the time and workload of transferring and reinstalling the electrode sheet between equipment, but also easily generates errors during the process conversion, affecting the processing accuracy of the electrode sheet. When processing lithium battery electrode sheets, the electrode sheet needs to be installed on the separator sheet, and the electrode sheet is driven by the separator sheet into the roll pressing position. At this time, the separator sheet has already wrinkled, resulting in wrinkling of the battery electrode sheet and electrode sheet failure. Moreover, this separate processing method leads to a cumbersome production process and low production efficiency, and cannot meet the requirements of modern large-scale lithium battery production. Summary of the Invention

[0005] To overcome the above defects, embodiments of the present disclosure provide a roll pressing and slitting integrated machine for lithium battery electrode sheets, which solves the technical problem that when the lithium battery electrode sheet is roll pressed in the prior art, at the beginning of roll pressing, wrinkles in the easily wrinkled part at the end cause damage to the electrode sheet.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a roll pressing and slitting integrated machine for lithium battery electrode sheets, including: A frame; A supporting roller, the supporting roller is rotatably arranged on the frame; An extrusion roller, the extrusion roller is arranged on one side of the supporting roller, a roll pressing space is formed between the extrusion roller and the supporting roller, the roll pressing space is for the passage of the lithium battery electrode sheet, the extrusion roller has mounting grooves, and there are two mounting grooves, which are arranged along the axial direction of the extrusion roller; Anti-wrinkle sheet, the anti-wrinkle sheet is slidably arranged in the installation groove, there are two anti-wrinkle sheets, and when the anti-wrinkle sheets are configured to contact the lithium battery electrode sheet, the two anti-wrinkle sheets can slide from the middle of the extrusion roller towards the two end parts of the extrusion roller; Slitting roller, the slitting roller is arranged on one side of the outlet of the rolling space.

[0007] In some examples, the bottom of the installation groove has a guiding surface for guiding the sliding of the anti-wrinkle sheet, the bottom of the anti-wrinkle sheet abuts against the guiding surface, the end of the anti-wrinkle sheet has an arc surface for abutting against the lithium battery electrode film, and the radian of the arc surface is the same as that of the extrusion roller.

[0008] In some examples, the anti-wrinkle sheet has an abutting part, the arc surface is located at the end of the abutting part, and after the abutting part slides into the installation groove, the arc surface and the outer surface of the extrusion roller form a smooth arc surface.

[0009] In some examples, the anti-wrinkle sheet has a mounting hole, and the extrusion roller includes: Roll body, the roll body is rotatably arranged on the frame, and the roll body has the installation groove; Sliding part, the sliding part is slidably arranged on the side wall of the installation groove, the sliding direction of the sliding part is parallel to the guiding surface, and the sliding part penetrates through the mounting hole; Elastic part, the elastic part provides the force for the sliding part to drive the anti-wrinkle sheet to slide out of the installation groove.

[0010] In some examples, the installation groove has an arc-shaped relief section and a depth section, the depth section has the guiding surface, there are two arc-shaped relief sections, which are symmetrically arranged along the depth section, and the anti-wrinkle sheet includes: Main body, the main body is slidably arranged in the depth section, the main body has clamping grooves, and there are two clamping grooves, which are respectively located on both sides of the main body; Lateral support part, the lateral support part has a clamping part and the abutting part, the clamping part is clamped in the clamping groove, and the upper end surfaces of the main body and the lateral support part form the arc surface.

[0011] In some examples, the length of the main body is less than the depth of the depth section, the side wall of the installation groove has a relief inclined groove, the sliding part slides into or out of the relief inclined groove after sliding, and the relief inclined groove is used to enable the sliding part to slide into or out of the mounting hole after sliding into the relief inclined groove.

[0012] In some examples, the slitting roller includes: Main roller, the main roller is rotatably arranged on one side of the outlet of the extrusion roller; Slitting knives, and a plurality of the slitting knives are arranged along the axis of the slitting roller; Guide members, which are arranged on the slitting roller, and there are two guide members, respectively located on both sides of the slitting roller, for guiding the lithium battery pole film before slitting.

[0013] In some examples, the rolling and slitting integrated machine for lithium battery pole pieces further includes: Take-up rollers, and a plurality of the take-up rollers are rotatably arranged on the discharging side of the slitting roller group, for winding up the lithium battery pole pieces after slitting.

[0014] In some examples, the rolling and slitting integrated machine for lithium battery pole pieces further includes: Guide roller group, which is arranged between the slitting roller and the take-up roller, for guiding the lithium battery pole film after being slit by the slitting roller to different take-up rollers.

[0015] For example, in a rolling and slitting integrated machine for lithium battery pole pieces provided by at least one embodiment of the present disclosure, there are at least two of the installation grooves, and two of the installation grooves parallel to the axial direction of the extrusion roller are taken as a group, and several groups of the installation grooves are arranged in a circumferential arrangement along the circumference of the extrusion roller.

[0016] The beneficial effects of the embodiments of the present disclosure are as follows: In the present disclosure, the anti-wrinkle sheet is slidably arranged in the installation groove of the extrusion roller, and when the anti-wrinkle sheet contacts the lithium battery pole piece, the two anti-wrinkle sheets slide in a direction away from each other. This design can flexibly adjust the position of the anti-wrinkle sheet according to the actual situation of the pole piece, effectively preventing the lithium battery pole piece from wrinkling during the rolling process. In the traditional rolling process, the pole piece is prone to wrinkling due to uneven force and other reasons, which affects the quality of the pole piece and subsequent use. Especially when threading the lithium battery pole piece on the rolling and slitting integrated machine, usually after threading the isolation film, the lithium battery pole piece on the isolation film is sent into the slitting part of the rolling machine by tightening the isolation film, and wrinkles often appear during the tightening process of the isolation film. At this time, through the change of the position of the anti-wrinkle sheet, the flatness of the isolation film is adjusted, thereby preventing the lithium battery electrode film from wrinkling during rolling. A rolling space is formed between the supporting roller and the extrusion roller. Under the combined action of the installation grooves arranged circumferentially on the extrusion roller and the anti-wrinkle sheet, the lithium battery pole piece can be combed by the anti-wrinkle sheet before entering the rolling space, and after being combed without wrinkles, it enters the rolling space, ensuring the flatness of the lithium battery pole piece when entering the rolling space. By ensuring the flatness of the lithium battery pole piece when entering the rolling space, the force during the rolling process of the lithium battery pole piece is further ensured to be more uniform. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings required for the description of the embodiments of the present disclosure. Obviously, the accompanying drawings in the following description are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the exemplary embodiments of the present disclosure and these drawings.

[0018] Figure 1 Structural schematic diagram of an embodiment of the present disclosure; Figure 2 Structural schematic diagram of the extrusion roller in the present disclosure; Figure 3 Cross-sectional structural schematic diagram of the supporting roller and the extrusion roller in one perspective of the present disclosure; Figure 4 is Figure 1 Enlarged structural schematic diagram of A in; Figure 5 is Figure 3 Partial structural schematic diagram of; Figure 6 is Figure 5 Enlarged structural schematic diagram of B in; Figure 7 Cross-sectional structural schematic diagram of the supporting roller and the extrusion roller in another perspective of the present disclosure; Figure 8 is Figure 7 Enlarged structural schematic diagram of C in; In the figure: frame - 1, supporting roller - 2, extrusion roller - 3, roll pressing space - 301, installation groove - 302, guiding surface - 303, roller body - 305, sliding part - 306, elastic part - 307, arc-shaped relief section - 308, depth section - 309, relief inclined groove - 310, anti-wrinkle sheet - 4, arc-shaped surface - 401, installation hole - 402, main body - 403, card slot - 404, lateral support part - 405, clamping part - 406, abutting part - 407, slitting roller - 5, main roller - 501, slitting knife - 502, guiding part - 503, material receiving roller - 6, guiding roller group - 7. Detailed implementation manners The following will further describe the present disclosure in detail with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than limiting the present disclosure.

[0019] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, to make the drawings simple and easy to understand, in some figures, parts with the same structure or function are only schematically shown for one of them, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0020] In this article, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific situations.

[0021] In this disclosure, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can include the direct contact between the first and second features, or can include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or only indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or only indicating that the horizontal height of the first feature is less than that of the second feature.

[0022] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "left", and "right" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this disclosure.

[0023] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0024] As Figures 1 to 7 shown, it shows a rolling and slitting integrated machine for lithium battery electrode sheets in an embodiment of this disclosure.

[0025] In some examples, as Figures 1 to 5As shown, the anti-wrinkle sheet 4 is slidably arranged in the mounting groove 302 of the pressing roller 3. When the anti-wrinkle sheet 4 contacts the lithium battery electrode sheet, the two anti-wrinkle sheets 4 arranged in the corresponding mounting grooves 302 slide in the direction from the middle to the end of the pressing roller 3. This design can flexibly adjust the position of the anti-wrinkle sheet 4 according to the actual situation of the electrode sheet, effectively preventing the lithium battery electrode sheet from wrinkling during the rolling process. In the traditional rolling process, the electrode sheet is prone to wrinkling due to uneven force and other reasons, which affects the quality of the electrode sheet and subsequent use. Especially when threading the lithium battery electrode sheet on the rolling and slitting integrated machine, usually after threading the separator film, by tightening the separator film, the lithium battery electrode sheet on the separator film is sent into the slitting part of the rolling machine. Wrinkles often appear during the tightening process of the separator film. By changing the position of the anti-wrinkle sheet 4, the flatness of the separator film is adjusted, thereby preventing the lithium battery electrode film from wrinkling during rolling. A rolling space 301 is formed between the supporting roller 2 and the pressing roller 3. Under the combined action of the mounting grooves 302 arranged circumferentially on the pressing roller 3 and the anti-wrinkle sheet 4, the lithium battery electrode sheet can be combed by the anti-wrinkle sheet 4 before entering the rolling space 301. After being combed without wrinkles, it enters the rolling space 301, ensuring the flatness of the lithium battery electrode sheet when entering the rolling space 301. By ensuring the flatness of the lithium battery electrode sheet when entering the rolling space 301, the force during the rolling process of the lithium battery electrode sheet is made more uniform.

[0026] The design of the anti-wrinkle sheet 4 being slidably arranged in the mounting groove 302 makes the installation and adjustment operations of the anti-wrinkle sheet 4 relatively simple. The operator only needs to put the anti-wrinkle sheet 4 into the mounting groove 302 to complete the installation, and can conveniently adjust the position of the anti-wrinkle sheet 4 in the mounting groove 302 according to different specifications and requirements of the electrode sheet. The supporting roller 2 is rotatably arranged on the frame 1, and the pressing roller 3 is arranged on one side of the supporting roller 2. This structural design ensures the stability of the rolling process. During the rolling process, the supporting roller 2 and the pressing roller 3 can stably apply pressure to the electrode sheet, preventing the processing quality of the electrode sheet from decreasing due to equipment shaking or instability. The slitting roller 5 is arranged on one side of the outlet of the pressing roller 3 and can accurately slit the rolled lithium battery electrode sheet.

[0027] This integrated machine integrates the two processes of rolling and slitting, realizing the continuous processing of lithium battery electrode sheets. The operator only needs to put the electrode sheet between the supporting roller 2 and the pressing roller 3, and after rolling, it is directly slit by the slitting roller 5, without the need to transfer and reinstall the electrode sheet between different devices.

[0028] In some examples, such as Figures 2 to 5As shown, a plurality of guiding surfaces 303 at the bottom of the installation groove 302 provide precise sliding guidance for the anti-wrinkle sheet 4. When the lithium battery pole piece passes through the rolling space 301, the anti-wrinkle sheet 4 can accurately adjust its position under the guidance of the guiding surface 303 to adapt to the shape and stress conditions of the pole piece. Compared with the situation without the guiding surface 303, the sliding deviation of the anti-wrinkle sheet 4 is reduced, thereby more effectively preventing the pole piece from wrinkling.

[0029] In some examples, such as Figures 2 to 6 As shown, after the anti-wrinkle sheet 4 slides, the abutting portion 407 slides into the installation groove 302, and the arc surface 401 and the outer surface of the pressing roller 3 form a smooth arc surface. This smooth arc surface can prevent the lithium battery pole piece from scratching or wrinkling due to uneven surface during the rolling process. Since the arc surface 401 and the outer surface of the pressing roller 3 form a smooth arc surface, the pole piece is more reasonably stressed during rolling. The anti-wrinkle sheet 4 can better disperse the pressure and avoid deformation or damage caused by excessive local stress on the pole piece. The smooth surface formed after rolling makes the pole piece enter the slitting roller 5 for slitting more smoothly. The smooth surface reduces the jitter or deviation caused by uneven surface of the pole piece during slitting, and improves the slitting accuracy and quality.

[0030] The installation groove 302 provides a clear sliding path and positioning space for the abutting portion 407 of the anti-wrinkle sheet 4. During the rolling process, the anti-wrinkle sheet 4 can stably slide along the installation groove 302, avoiding the shaking or displacement of the anti-wrinkle sheet 4. At the same time, the smooth arc surface structure reduces the friction and impact between the anti-wrinkle sheet 4 and the pressing roller 3. During the operation of the equipment, the acting force between the anti-wrinkle sheet 4 and the pressing roller 3 is more uniform, reducing the wear degree of the components.

[0031] In some examples, such as Figures 3 to 6 As shown, the mounting hole 402 of the anti-wrinkle sheet 4 cooperates with the sliding member 306 of the pressing roller 3, and the elastic member 307 provides the force for the sliding member 306 to reset, so that the anti-wrinkle sheet 4 can start to flatten the pole piece when contacting the pole piece, and before the pole piece enters the rolling space 301, the pole piece is flattened to prevent the pole piece from wrinkling during rolling. The elastic force of the elastic member 307 ensures that an anti-wrinkle sheet 4 can reset after rolling the pole piece, and multiple groups of anti-wrinkle sheets 4 are used to avoid damage caused by local deformation of the pole piece due to rolling.

[0032] The lithium battery pole piece treated with anti-wrinkle has a better foundation for precise slitting by the slitting roller 5 due to the improvement of its flatness and thickness uniformity. During the slitting process, the pole piece is not easy to shake or shift, and the slitting roller 5 can slit more accurately according to the predetermined size. The reset force provided by the elastic member 307 ensures that the anti-wrinkle sheet 4 can reset in time after the pole piece passes, thus ensuring the flatness of the pole piece.

[0033] The fitting method of the mounting hole 402 of the anti-wrinkle sheet 4 and the sliding member 306 makes the installation process of the anti-wrinkle sheet 4 relatively simple. The operator only needs to align the mounting hole 402 of the anti-wrinkle sheet 4 with the sliding member 306 and insert it to complete the installation. At the same time, during the equipment debugging stage, by adjusting parameters such as the pre-tightening force of the elastic member 307, the working state of the anti-wrinkle sheet 4 can be conveniently adjusted.

[0034] Components such as the mounting hole 402, the sliding member 306, and the elastic member 307 are relatively independent, facilitating inspection, maintenance, and replacement. When a certain component is damaged or worn, the operator can easily disassemble it for repair or replace it with a new component without large-scale disassembly of the entire equipment.

[0035] In some examples, such as Figures 2 to 8 As shown, the arc-shaped relief section 308 and the depth section 309 of the installation groove 302 are designed to cooperate with the main body 403 and the lateral support portion 405 of the anti-wrinkle sheet 4, enabling the anti-wrinkle sheet 4 to fit more precisely to the lithium battery electrode sheet. The main body 403 slides within the depth section 309, and the lateral support portion 405 is connected to the main body 403 through the engaging portion 406. The arc-shaped surface 401 formed by them can better contact the electrode sheet. The arc-shaped relief section 308 provides sufficient movement space for the lateral support portion 405, enabling it to better adapt to the shape change of the electrode sheet when contacting the electrode sheet. This helps reduce scratches and damage on the surface of the electrode sheet and improves the surface quality of the electrode sheet.

[0036] The main body 403 of the anti-wrinkle sheet 4 slides within the depth section 309, and the guiding surface 303 of the depth section 309 provides a stable sliding path for the main body 403. At the same time, the lateral support portion 405 is tightly connected to the main body 403 through the engaging portion 406, further enhancing the overall stability of the anti-wrinkle sheet 4. During the operation of the equipment, especially when the anti-wrinkle sheet 4 abuts against the electrode sheet, the anti-wrinkle sheet 4 can smoothly adjust following the movement of the electrode sheet, avoiding shaking and deviation.

[0037] The arc-shaped relief section 308 provides a buffer space for the lateral support portion 405, reducing the collision and friction between the lateral support portion 405 and the side wall of the installation groove 302. This design reduces the wear degree of the anti-wrinkle sheet 4 and related components of the installation groove 302. The main body 403 and the lateral support portion 405 of the anti-wrinkle sheet 4 are connected through the card slot 404 and the engaging portion 406. This structure makes the installation and disassembly process of the anti-wrinkle sheet 4 simple. The operator only needs to snap the engaging portion 406 of the lateral support portion 405 into the card slot 404 of the main body 403 to complete the assembly; when disassembling, only need to take out the engaging portion 406 from the card slot 404.

[0038] In some examples, such as Figures 2 to 7As shown, the relief chute 310 provides a smooth sliding path for the slider 306, reducing the friction and collision between the slider 306 and the side wall of the installation groove 302. When the slider 306 slides into the relief chute 310, there is a gap between the slider 306 and the groove wall of the installation groove 302, facilitating the insertion and removal of the anti-wrinkle sheet 4. The length of the main body 403 is less than the depth of the depth section 309, allowing the anti-wrinkle sheet 4 to have a greater range of movement in the depth direction. Simply pressing the anti-wrinkle sheet 4 into the depth section 309 by a certain depth can complete the engagement and disengagement between the slider 306 and the mounting hole 402.

[0039] In some examples, as Figures 1 to 4 As shown, the slitting knives 502 are arranged along the axis of the slitting roller 5, and the main roller 501 is rotatably arranged on one side of the outlet of the extrusion roller 3, capable of precisely slitting the lithium battery electrode sheet that has been roll-pressed. The arrangement of the slitting knives 502 can accurately control the width and size of the slitting according to production requirements, ensuring the specification consistency of the slit electrode sheets. The guiding members 503 are respectively located on both sides of the slitting roller 5, playing a guiding role before the lithium battery electrode sheet is slit. The guiding members 503 can enable the electrode sheet to smoothly enter the slitting area, preventing the electrode sheet from shifting or shaking during the slitting process, thereby improving the edge quality of the slit electrode sheet. The edges of the electrode sheet are more neat and smooth, reducing the occurrence of burrs and tearing phenomena. Under the guidance of the guiding members 503, the electrode sheet can pass through the slitting knives 502 in a stable posture, reducing damage to the electrode sheet during the slitting process. The slitting knives 502 cut the electrode sheet more smoothly, reducing the damage to the internal structure of the electrode sheet caused by uneven cutting resistance.

[0040] In some examples, as Figures 1 to 4 As shown, the take-up roller 6 is rotatably arranged on the discharging side of the slitting roller 5, capable of promptly winding up the slit lithium battery electrode sheet. This enables the entire roll-pressing and slitting process to proceed continuously, avoiding production interruptions caused by the accumulation or waiting for processing of the electrode sheets. During the winding process of the take-up roller 6, a certain tension can be applied to the slit electrode sheet, keeping the electrode sheet flat during the winding process. This tension control can effectively prevent the electrode sheet from wrinkling or bending during the winding process, ensuring the flatness and quality of the electrode sheet.

[0041] In some examples, as Figures 1 to 4 As shown, the guiding roller group 7 is arranged between the slitting roller 5 and the take-up roller 6, capable of precisely guiding the lithium battery electrode sheet slit by the slitting roller 5 to different take-up rollers 6. By reasonably arranging the position and angle of the guiding roller group 7, it can ensure that the electrode sheet accurately enters the corresponding take-up roller 6 for winding. During the process of guiding the electrode sheet, the guiding roller group 7 can apply uniform tension to the electrode sheet, further ensuring the flatness of the electrode sheet. At the same time, the setting of the guiding roller group 7 enables the slit electrode sheets to be wound along different paths, avoiding the situation where the electrode sheets fail due to overlap when wound along the same path.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit them. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered by the scope of the claims of the present disclosure.

Claims

1. A roll pressing and slitting integrated machine for lithium battery electrode sheets, characterized in that, Comprising: A frame (1); Carrier rollers (2), the carrier rollers (2) being rotatably arranged on the frame (1); Pressing rollers (3), the pressing rollers (3) being arranged on one side of the carrier rollers (2), a rolling pressure space (301) being formed between the pressing rollers (3) and the carrier rollers (2), the rolling pressure space (301) being for the passage of lithium battery electrode sheets, the pressing rollers (3) having mounting grooves (302), there being two mounting grooves (302), arranged along the axial direction of the pressing rollers (3); Anti-wrinkle sheets (4), the anti-wrinkle sheets (4) being slidably arranged in the mounting grooves (302), there being two anti-wrinkle sheets (4), the anti-wrinkle sheets (4) being configured such that when in contact with the lithium battery electrode sheet, the two anti-wrinkle sheets (4) can slide from the middle of the pressing rollers (3) towards the two end parts of the pressing rollers (3); Slitting rollers (5), the slitting rollers (5) being arranged on one side of the outlet of the rolling pressure space (301).

2. The roll pressing and slitting integrated machine for a lithium battery electrode sheet according to claim 1, wherein, The bottom of the mounting groove (302) has a guiding surface (303) for guiding the sliding of the anti-wrinkle sheets (4), the bottom of the anti-wrinkle sheets (4) abutting against the guiding surface (303), the end part of the anti-wrinkle sheets (4) having an arc surface (401) for abutting against the lithium battery electrode film, the radian of the arc surface (401) being the same as the radian of the pressing rollers (3).

3. The roll pressing and slitting integrated machine for a lithium battery electrode sheet according to claim 2, wherein, The anti-wrinkle sheets (4) have abutting parts (407), the arc surface (401) being located at the end part of the abutting parts (407), the abutting parts (407) being configured such that after the abutting parts (407) slide into the mounting grooves (302), the arc surface (401) and the outer surface of the pressing rollers (3) form a smooth arc surface.

4. The roll pressing and slitting integrated machine for a lithium battery electrode sheet according to claim 3, characterized in that, The anti-wrinkle sheets (4) have mounting holes (402), and the pressing rollers (3) include: Roll bodies (305), the roll bodies (305) being rotatably arranged on the frame (1), the roll bodies (305) having the mounting grooves (302); Sliding members (306), the sliding members (306) being slidably arranged on the side walls of the mounting grooves (302), the sliding direction of the sliding members (306) being parallel to the guiding surface (303), the sliding members (306) passing through the mounting holes (402); Elastic members (307), the elastic members (307) providing the force for the sliding members (306) to drive the anti-wrinkle sheets (4) to slide out of the mounting grooves (302).

5. A roll pressing and slitting integrated machine for lithium battery electrode sheets according to claim 4, characterized in that, The mounting grooves (302) have arc-shaped yielding sections (308) and depth sections (309), the depth sections (309) having the guiding surfaces (303), there being two arc-shaped yielding sections (308), symmetrically arranged along the depth sections (309), and the anti-wrinkle sheets (4) include: Bodies (403), the bodies (403) being slidably arranged in the depth sections (309), the bodies (403) having clamping grooves (404), there being two clamping grooves (404), respectively located on both sides of the bodies (403); The lateral support part (405), the lateral support part (405) has a clamping part (406) and the abutting part (407), the clamping part (406) is clamped in the clamping groove (404), and an arc surface (401) is formed between the main body (403) and the upper end surface of the lateral support part (405).

6. The roll pressing and slitting integrated machine for a lithium battery electrode sheet according to claim 5, wherein, The length of the main body (403) is less than the depth of the depth section (309), a relief inclined groove (310) is provided on the side wall of the installation groove (302), the sliding part (306) slides into or out of the relief inclined groove (310) after sliding, and the relief inclined groove (310) is used to enable the sliding part (306) to slide into or out of the installation hole (402) after the sliding part (306) slides into the relief inclined groove (310).

7. A rolling and slitting integrated machine for lithium battery electrode sheets according to claim 1, characterized in that, The slitting roller (5) includes: A main roller (501), the main roller (501) is rotatably arranged on one side of the outlet of the extrusion roller (3); Slitting knives (502), the slitting knives (502) are arranged in several along the axis of the slitting roller (5); Guide members (503), the guide members (503) are arranged on the slitting roller (5), there are two guide members (503), which are respectively located on both sides of the slitting roller (5), and are used for guiding the lithium battery pole film before slitting.

8. A rolling and slitting integrated machine for lithium battery electrodes according to claim 1, characterized in that The rolling and slitting integrated machine for lithium battery pole pieces further includes: Take-up rollers (6), there are several take-up rollers (6), and several take-up rollers (6) are all rotatably arranged on one side of the outlet of the slitting roller (5) group, and are used for winding the lithium battery pole pieces after slitting.

9. A roll pressing and slitting integrated machine for lithium battery electrode sheets according to claim 8, characterized in that, The rolling and slitting integrated machine for lithium battery pole pieces further includes: A guide roller group (7), the guide roller group (7) is arranged between the slitting roller (5) and the take-up roller (6), and is used for guiding the lithium battery pole film after being slit by the slitting roller (5) to different take-up rollers (6).

10. A roll pressing and slitting integrated machine for a lithium battery electrode sheet according to claim 1, characterized in that, There are at least two installation grooves (302), and two installation grooves (302) parallel to the axial direction of the extrusion roller (3) are taken as a group, and several groups of installation grooves (302) are arranged in a circumferential circle along the circumference of the extrusion roller (3).

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