Heat supplementing and pressurizing device for lithium ion battery production

Abstract

The invention discloses a heat supplementing and pressurizing device for lithium ion battery production, and relates to the technical field of lithium ion battery production, the heat supplementing and pressurizing device comprises a roller spacing adjusting assembly, the roller spacing adjusting assembly comprises a portal frame, an upper arm, a cone pulley key shaft, a sliding plate, an adjusting screw rod, a scraper, a movable roller, a driven umbrella wheel, a connecting piece and a transmission key sleeve, the side end of the portal frame is fixedly connected with the upper arm, and the upper arm is fixedly connected with the sliding plate; a cone pulley key shaft is rotatably mounted at the bottom end of the upper arm, and a sliding plate is slidably mounted in the portal frame. In the using process, through the arrangement of a power source, rolling and traction conveying of pole piece materials can be achieved when the upper pressing roller and the lower pressing roller rotate reversely synchronously, further, the fixed roller rotates and drives the movable roller through a cone pulley key shaft, and the using requirement for adjusting the roller distance between the movable roller and the fixed roller in the running process is met; and continuous power supply for fixed-length cutting can be met, so that the pole piece materials can be continuously rolled and cut under the action of a power source, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production, in particular to a heating and pressurizing device for lithium ion battery production. Background Art

[0002] Lithium-ion battery pole pieces refer to the positive and negative pole pieces in lithium-ion batteries. They are one of the most critical parts of the battery and have functions such as conductivity, insulation, resistance to lateral flow, reducing battery pack capacity loss and improving battery safety performance. The manufacturing process of lithium-ion battery pole pieces can be divided into four steps: mixing, coating, rolling and slitting. After coating, the battery pole pieces need to be dried to remove the solvent in the coated pole pieces and solidify the slurry to form a porous, multi-component coating structure. The control of the moisture content of the battery pole pieces is crucial, which directly determines the various performance indicators of the lithium battery.

[0003] In the prior art, contact drying methods such as roller drying or non-contact drying methods such as hot air drying in an oven are usually used to dry and remove water from battery electrodes. Among them, the hot air drying method heats the coating material from the outer layer to the inner layer, and the heating efficiency is low and the heating is uneven. The roller drying method heats the coating material from the inside to the outside by contacting the electrode, and the heating efficiency is high, but the problem of uneven heating is the same as that in hot air drying, resulting in electrode defects such as craters and white spots. In addition, the existing baking equipment still uses a split-type layout of recovery equipment to recover the solvent generated after the coating material is baked, lacking effective integration. In addition, during the roller operation process, due to the need for high compaction density and compression rate, on the one hand, dust and material particles are very easy to adhere to the upper and lower rollers of the roller during the rolling process, thereby causing marks or even damage to the processed products. On the other hand, the equipment often needs to be stopped to adjust the roller spacing, which is inconvenient to use.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a heating and pressurizing device for lithium-ion battery production is proposed. Summary of the invention

[0005] The object of the present invention is to provide a heating and pressurizing device for lithium-ion battery production to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a heating and pressurizing device for lithium-ion battery production, comprising a roller pitch adjustment component, the roller pitch adjustment component comprising a gantry, an upper arm, a cone wheel key shaft, a slide plate, an adjusting screw, a scraper, a movable roller, a driven umbrella wheel, a connecting piece and a transmission key sleeve, the side end of the gantry is fixedly connected to the upper arm, and the bottom end of the upper arm is rotatably mounted with the cone wheel key shaft, a slide plate is slidably mounted inside the gantry, and the top end of the slide plate is connected to the adjusting screw, a scraper is fixedly mounted on the top of the front end of the slide plate, and a movable roller is rotatably mounted on the bottom of the front end of the slide plate through a bearing seat, and the side end of the movable roller is coaxially connected with the driven umbrella wheel, the side end of the slide plate is fixedly connected to the connecting piece, and the end of the connecting piece is rotatably mounted with a transmission key sleeve, the key groove inside the transmission key sleeve cooperates with the key convex on the cone wheel key shaft, and the transmission key sleeve is rotated to transmit the movable roller through meshing with the driven umbrella wheel.

[0007] Furthermore, the gantry is welded and fixed to the top of the front end of the frame, and a recess is opened in the middle of the front end of the frame, and the bottom of the frame is fixedly installed with supporting feet around it, and the side of the front end supporting feet is fixedly connected with a lower arm, and the lower arm is connected to the other end of the cone wheel key shaft away from the upper arm.

[0008] Furthermore, a linkage cutting assembly is arranged at the top of the rear end of the frame, and the linkage cutting assembly includes a shelf and a motor. The shelf is fixedly installed on the inner side of four supporting feet, and the motor is fixed by bolts in the middle of the shelf.

[0009] Furthermore, the linkage slitting assembly also includes a flywheel and an eccentric connecting rod. The end of the motor output shaft is connected to the flywheel, and the flywheel disc is rotatably connected to the eccentric connecting rod.

[0010] Furthermore, the linkage slitting assembly also includes a lifting rod, a guide sleeve and a cutter. The eccentric connecting rod is rotatably connected to the root of the lifting rod at one end away from the flywheel, and the lifting rod is slidingly matched with the guide sleeves on both sides of the frame respectively, and the cutter is fixed to the top bolt of the lifting rod.

[0011] Furthermore, the linked slitting assembly also includes a synchronous belt, a fixed roller and a driving bevel wheel. The middle pulley sleeve of the motor output shaft is provided with a synchronous belt, and the synchronous belt is transmission-connected to the fixed roller at one end away from the motor output shaft, and the driving bevel wheel coaxial with the side end of the fixed roller is meshed with the cone wheel below the cone wheel key shaft for transmission. The fixed roller protrudes from the top plane of the frame through a recess and is located directly below the movable roller, and the fixed roller is parallel to the axis of the movable roller and maintains synchronous reverse rotation.

[0012] Furthermore, a drying box is fixedly connected to the front end of the frame, and the bottom middle end of the drying box is composed of a contact drying plate, one side of the contact drying plate is provided with a slope inclined from front to rear, and hot air drying fans are evenly spaced on the other side of the contact drying plate.

[0013] Furthermore, a solvent recovery component is attached to the bottom of the contact drying plate, and the solvent recovery component includes a frame and a semiconductor refrigeration sheet. The frames are arranged at equal intervals on the bottom plane of the contact drying plate and are fixed by screws, and semiconductor refrigeration sheets with different powers are embedded in the frame. The power of the semiconductor refrigeration sheets located on the bottom plane of the contact drying plate gradually increases from front to back, and the hot end of the semiconductor refrigeration sheet faces upward and is tightly fitted to the bottom plane of the contact drying plate through thermal grease.

[0014] Furthermore, the solvent recovery component also includes a cooling sleeve and a connecting pipe. The cold end of the semiconductor refrigeration plate faces downward and is fixedly connected to the cooling sleeve, and a connecting pipe runs through adjacent cooling sleeves.

[0015] Furthermore, the solvent recovery assembly also includes a recovery hood and a collecting bottle, one end of the connecting tube is connected to the recovery hood, and the recovery hood covers the top of the contact drying plate, the other end of the connecting tube is connected to the side end connecting port of the collecting bottle, and the top end connecting port of the collecting bottle is threadedly fixed to the end of the slope.

[0016] The present invention provides a heating and pressurizing device for lithium ion battery production, which has the following beneficial effects:

[0017] 1. During the use of the present invention, the present application can realize rolling and pulling conveying of the pole piece material when the upper and lower pressure rollers are synchronously reversed by setting a power source. Further, the fixed roller drives the movable roller through the cone wheel key shaft, which meets the use requirements of adjusting the roller distance between the movable roller and the fixed roller during operation, and can also meet the continuous power supply for fixed-length cutting, so that the pole piece material can be continuously rolled and cut under the action of a power source, thereby improving production efficiency;

[0018] 2. During the use of the present invention, semiconductor refrigeration plates with hot ends facing upwards are evenly arranged on the bottom plane of the contact drying plate, and the structural design of the semiconductor refrigeration plates with gradually increasing power from front to back allows the electrode to achieve incremental heat supplement when passing through different areas of the contact drying plate, thereby improving the drying effect of the electrode by gradually and evenly raising the temperature. In addition, the heat generated by the hot end of the semiconductor refrigeration plate is further conducted to the thermal wire on one side through the contact drying plate, so that the air blown out by the hot air drying fan is preheated by the thermal wire to form high-temperature hot air. On the basis of the contact drying method of the contact drying plate for the electrode material, the non-contact drying method of the high-temperature hot air for the electrode material is superimposed, and the two drying methods are combined to effectively improve the double-sided drying effect of the electrode material.

[0019] 3. During the use of the present invention, the present application fully utilizes the energy at both the hot and cold ends of the semiconductor refrigeration plate. On the one hand, it utilizes the energy at the hot end to achieve a dual drying effect combining contact drying and hot air drying. On the other hand, it integrates and recovers the gaseous solvents, dust and particulate impurities generated during the baking process of the coating material, thereby improving the integrated recovery effect of the solvent and impurities in the baking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall top view of the structure of the device of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the device of the present invention when viewed from above;

[0022] Figure 3 It is a schematic diagram of the side cross-sectional structure of the drying box of the present invention;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the drying box end face of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the linkage cutting assembly of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the roller spacing adjustment component of the present invention.

[0026] In the figure: 1. roller spacing adjustment assembly; 101. gantry; 102. upper arm; 103. cone wheel key shaft; 104. slide plate; 105. adjustment screw; 106. scraper; 107. movable roller; 108. driven umbrella wheel; 109. connector; 110. transmission key sleeve; 2. frame; 3. notch; 4. support foot; 5. lower arm; 6. linkage cutting assembly; 601. shelf; 602. motor; 603. flywheel; 604. Eccentric connecting rod; 605, lifting rod; 606, guide sleeve; 607, cutter; 608, synchronous belt; 609, fixed roller; 610, driving umbrella wheel; 7, drying box; 8, contact drying plate; 9, ramp; 10, hot air drying fan; 11, solvent recovery component; 1101, frame; 1102, semiconductor refrigeration sheet; 1103, cooling sleeve; 1104, connecting pipe; 1105, recovery cover; 1106, collecting bottle. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0028] See also Figures 1 to 6The present invention provides a technical solution: a heating and pressurizing device for lithium-ion battery production, comprising a roller gap adjustment component 1, the roller gap adjustment component 1 comprising a gantry 101, an upper arm 102, a cone wheel key shaft 103, a slide plate 104, an adjustment screw 105, a scraper 106, a movable roller 107, a driven umbrella wheel 108, a connecting piece 109 and a transmission key sleeve 110, the gantry 101 side end is fixedly connected to the upper arm 102, and the upper arm 102 bottom end is rotatably installed with the cone wheel key shaft 103, the gantry 101 is slidably installed with the slide plate 104, and the top of the slide plate 104 is connected with the adjustment screw 105, the front end of the slide plate 104 is fixedly installed with the scraper 106, and the slide plate 104 A movable roller 107 is rotatably installed at the bottom of the front end through a bearing seat, and a driven umbrella wheel 108 is coaxially connected to the side end of the movable roller 107. A connecting piece 109 is fixedly connected to the side end of the slide plate 104, and a transmission key sleeve 110 is rotatably installed at the end of the connecting piece 109. The internal key groove of the transmission key sleeve 110 cooperates with the key protrusion on the cone wheel key shaft 103, and the transmission key sleeve 110 rotates and transmits the movable roller 107 through engagement with the driven umbrella wheel 108. The gantry 101 is welded and fixed to the top of the front end of the frame 2, and a recess 3 is opened in the middle of the front end of the frame 2. Support legs 4 are fixedly installed around the bottom of the frame 2, and the side of the front support legs 4 is fixedly connected to the lower arm 5, and the lower arm 5 is connected to the cone wheel key. The other end of the shaft 103 is away from the upper arm 102, and a linkage slitting assembly 6 is arranged on the top of the rear end of the frame 2. The linkage slitting assembly 6 includes a shelf 601 and a motor 602. The shelf 601 is fixedly installed on the inner side of the four supporting feet 4, and the motor 602 is fixed with bolts in the middle of the shelf 601. The linkage slitting assembly 6 also includes a flywheel 603 and an eccentric connecting rod 604. The end of the output shaft of the motor 602 is connected to the flywheel 603, and the flywheel 603 is rotatably connected to the eccentric connecting rod 604. The linkage slitting assembly 6 also includes a lifting rod 605, a guide sleeve 606 and a cutter 607. The end of the eccentric connecting rod 604 away from the flywheel 603 is rotatably connected to the root of the lifting rod 605, and the lifting rod 605 is respectively It is slidably matched with the guide sleeves 606 on both sides of the frame 2, and a cutter 607 is fixed with bolts on the top of the lifting rod 605. The linkage slitting assembly 6 also includes a synchronous belt 608, a fixed roller 609 and a driving umbrella wheel 610. The pulley sleeve in the middle of the output shaft of the motor 602 is provided with a synchronous belt 608, and the synchronous belt 608 is connected to the fixed roller 609 at one end away from the output shaft of the motor 602. The driving umbrella wheel 610 coaxial with the side end of the fixed roller 609 is meshed with the cone wheel below the cone wheel key shaft 103. The fixed roller 609 is exposed through the notch 3 on the top plane of the frame 2 and is located directly below the movable roller 107. The fixed roller 609 is parallel to the axis of the movable roller 107 and keeps synchronous reverse rotation.

[0029] The specific operation is as follows. On the one hand, the motor 602 rotates and transmits to the fixed roller 609 through the synchronous belt 608 set on the pulley sleeve in the middle of its output shaft. The fixed roller 609 further engages and transmits to the cone wheel below the cone wheel key shaft 103 through the coaxial driving umbrella wheel 610 at the side end, thereby driving the cone wheel key shaft 103 to rotate between the upper arm 102 and the lower arm 5. Further, the cone wheel key shaft 103 drives the transmission key sleeve 110 to rotate through the external key convex, and then drives the movable roller 107 and the fixed roller 609 to rotate synchronously in the opposite direction through the engagement of the transmission key sleeve 110 with the driven umbrella wheel 108, so as to realize traction and transportation while rolling the pole piece material. When in use, the slide plate 104 located inside the gantry 101 can be driven to slide and rise and fall by rotating the adjusting screw 105. The transmission cone sleeve rotatably connected to the side connecting piece 109 of the slide plate 104 can realize synchronous lifting and falling during the rotation of the cone wheel key shaft 103 through the cooperation of its internal key groove and the external key convex of the cone wheel key shaft 103. During operation, the roller distance between the movable roller 107 and the fixed roller 609 is adjusted to meet the use requirements of the electrode material always having a high compaction density and compression rate. On the other hand, the pulley at the end of the output shaft of the motor 602 drives the eccentric connecting rod 604 with an eccentric disk to rotate, and then the eccentric connecting rod 604 drives the lifting rod 605 to slide back and forth in the corresponding guide sleeves 606 on both sides of the frame 2. Further, the reciprocating lifting of the lifting rod 605 drives the cutter 607 at its top to achieve equal-interval cutting of the electrode material. The present application can realize the rolling and traction transportation of the electrode material when the upper and lower pressure rollers are synchronously reversed by setting a power source. Further, the fixed roller 609 drives the rotation of the movable roller 107 through the cone wheel key shaft 103 to the movable roller 107, which meets the use requirements of adjusting the roller distance between the movable roller 107 and the fixed roller 609 during operation, and can also meet the continuous power supply for fixed-length cutting, so that the electrode material can be continuously rolled and cut under the action of a power source, thereby improving production efficiency.

[0030] See also Figures 1 to 4 The front end of the frame 2 is fixedly connected with a drying box 7, and the middle bottom end of the drying box 7 is composed of a contact drying plate 8, one side of the contact drying plate 8 is provided with a slope 9 inclined from front to rear, and the other side of the contact drying plate 8 is evenly spaced with hot air drying fans 10;

[0031] The specific operation is as follows: the coated electrode material is placed on the contact drying plate 8 and continuously conveyed under the traction of the upper and lower pressure rollers rotating synchronously in the opposite direction. The present application arranges semiconductor cooling plates 1102 with the hot end facing upward at equal intervals on the bottom plane of the contact drying plate 8, and the power of the semiconductor cooling plates 1102 is gradually increased from front to back. The structure design allows the electrode to achieve incremental heat supplement when passing through different areas of the contact drying plate 8. The electrode drying effect is improved by gradually and evenly heating up, avoiding defects in the coated electrode material due to excessively fast heating. , thereby improving the control accuracy of the moisture content of the electrode, thereby improving the coating effect and improving the production quality of lithium batteries. In addition, the heat generated by the hot end of the semiconductor refrigeration sheet 1102 is further conducted to the heat-conducting wire on one side through the contact drying plate 8, so that the air blown out by the hot air drying fan 10 is preheated by the heat-conducting wire to form high-temperature hot air. On the basis of the contact drying method of the contact drying plate 8 for the electrode material, the non-contact drying method of the high-temperature hot air for the electrode material is superimposed. The two drying methods are combined to effectively improve the double-sided drying effect of the electrode material;

[0032] See also Figures 2 to 3 A solvent recovery component 11 is attached to the bottom of the contact drying plate 8. The solvent recovery component 11 includes a frame 1101 and a semiconductor cooling sheet 1102. The frame 1101 is evenly spaced and fixed on the bottom plane of the contact drying plate 8 and fixed by screws. The frame 1101 is embedded with semiconductor cooling sheets 1102 with different powers. The power of the semiconductor cooling sheets 1102 located on the bottom plane of the contact drying plate 8 increases gradually from front to back. The hot end of the semiconductor cooling sheet 1102 faces upward and is tightly attached to the bottom plane of the contact drying plate 8 through thermal grease. The solvent recovery component 11 It also includes a cooling sleeve 1103 and a connecting pipe 1104. The cold end of the semiconductor refrigeration sheet 1102 faces downward and is fixedly connected to the cooling sleeve 1103. The connecting pipe 1104 is connected through adjacent cooling sleeves 1103. The solvent recovery assembly 11 also includes a recovery cover 1105 and a collection bottle 1106. One end of the connecting pipe 1104 is connected to the recovery cover 1105, and the recovery cover 1105 covers the top of the contact drying plate 8. The other end of the connecting pipe 1104 is connected to the side end connecting port of the collection bottle 1106, and the top connecting port of the collection bottle 1106 is threadedly fixed to the end of the slope 9.

[0033] The specific operation is as follows: before the slurry on the surface of the electrode material is completely solidified, the high-temperature hot air output by the hot air drying fan 10 will cause the slurry to be evenly distributed on the electrode material, and the solvent will entrain the particulate impurities contained in the slurry and be pushed to the top of the slope 9 under the action of the hot air drying fan 10, and further flow from the top of the slope 9 into the collecting bottle 1106 connected to the end under the action of gravity, so as to prevent the particulate impurities in the slurry from adhering to the upper and lower rollers of the roller, thereby causing marks or even damage to the processed products and other undesirable phenomena. The electrode material is evenly dried in the process of gradually heating up. In this process, the gaseous solvent and dust generated by the coating material after being heated are drawn out. The machine is sucked into the recovery cover 1105, and further passed through the connecting pipe 1104 into the cooling sleeve 1103 connected to the cold end of the adjacent semiconductor refrigeration plate 1102 to obtain condensation. The condensed liquid solvent and dust are passed into the connecting port at the side end of the collecting bottle 1106 and are collected together with the particulate impurities. The present application makes full use of the energy at both the hot and cold ends of the semiconductor refrigeration plate 1102. On the one hand, it uses the energy at the hot end to achieve the dual drying effect of contact drying and hot air drying. On the other hand, it integrates and recovers the gaseous solvent, dust and particulate impurities generated during the baking process of the coating material, thereby improving the integrated recovery effect of the solvent and impurities in the baking process.

[0034] In summary, when using the heat supplement and pressurizing device for lithium-ion battery production, the coated electrode material is placed on the contact drying plate 8 and continuously conveyed under the traction of the upper and lower pressure rollers rotating synchronously in the opposite directions. The present application arranges semiconductor cooling plates 1102 with the hot end facing upward at equal intervals on the bottom plane of the contact drying plate 8, and the structural design of the semiconductor cooling plate 1102 with gradually increasing power from front to back allows the electrode to achieve incremental heat supplement when passing through different areas of the contact drying plate 8. The temperature is gradually and evenly increased to improve the drying effect of the electrode, avoid defects in the coated electrode material due to too fast temperature increase, thereby improving the control accuracy of the moisture content of the electrode, and then improving the coating effect and the production quality of lithium batteries. In addition, the hot end of the semiconductor cooling plate 1102 produces The generated heat is further conducted to the heat-conducting wire on one side through the contact drying plate 8, so that the wind blown out by the hot air drying fan 10 is preheated by the heat-conducting wire to form high-temperature hot air. On the basis of the contact drying method of the contact drying plate 8 for the electrode material, the non-contact drying method of the high-temperature hot air for the electrode material is superimposed. The two drying methods are combined to effectively improve the double-sided drying effect of the electrode material. Before the slurry on the surface of the electrode material is completely solidified, the high-temperature hot air output by the hot air drying fan 10 will cause the slurry to be evenly distributed on the electrode material. The solvent entrains the particulate impurities contained in the slurry and is pushed to the top of the slope 9 under the action of the hot air drying fan 10, and further flows from the top of the slope 9 into the collecting bottle 1106 connected to the end under the action of gravity, preventing the slurry from being completely solidified. The granular impurities in the material adhere to the upper and lower pressure rollers of the rolling machine, which may cause marks or even breakage on the processed products. The electrode material is evenly dried in the process of gradually heating up. In this process, the gaseous solvent and dust generated by the coating material after being heated are sucked into the recovery hood 1105 by the induced draft fan, and further passed through the connecting pipe 1104 into the cooling sleeve 1103 connected to the cold end of the adjacent semiconductor refrigeration plate 1102 to obtain condensation. The condensed liquid solvent and dust are passed into the connecting port at the side end of the collection bottle 1106 and collected together with the granular impurities. The present application makes full use of the energy at both the hot and cold ends of the semiconductor refrigeration plate 1102. On the one hand, it uses the energy at the hot end to achieve the dual drying effect of contact drying and hot air drying. On the other hand, it The gaseous solvent, dust and particulate impurities generated during the baking process of the cloth material are integrated and recovered to improve the integrated recovery effect of the solvent and impurities during the baking process. On the one hand, the motor 602 rotates and transmits to the fixed roller 609 through the synchronous belt 608 set on the pulley sleeve in the middle of its output shaft. The fixed roller 609 further drives the cone wheel meshing transmission to the cone wheel below the cone wheel key shaft 103 through the coaxial driving umbrella wheel 610 at the side end, thereby driving the cone wheel key shaft 103 located between the upper arm 102 and the lower arm 5 to rotate. Further, the cone wheel key shaft 103 drives the transmission key sleeve 110 to rotate through the external key convex, and then drives the movable roller 107 and the fixed roller 609 to rotate synchronously in the opposite direction through the meshing of the transmission key sleeve 110 and the driven umbrella wheel 108, so as to realize traction and transportation while rolling the pole piece material.When in use, the slide plate 104 can be driven to slide and rise and fall inside the gantry 101 by rotating the adjusting screw 105. The transmission cone sleeve connected to the side connecting piece 109 of the slide plate 104 can realize synchronous lifting and falling in the process of the rotation of the cone wheel key shaft 103 through the cooperation of its internal key groove and the external key convex of the cone wheel key shaft 103. The roller distance between the movable roller 107 and the fixed roller 609 can be adjusted during operation to meet the use requirements of the pole piece material always having a high compaction density and compression rate. On the other hand, the pulley at the end of the output shaft of the motor 602 drives the eccentric connecting rod 604 with an eccentric disk to rotate, and then the eccentric connecting rod 604 drives the lifting rod 605 to be located in the machine The guide sleeves 606 corresponding to the two sides of the frame 2 slide back and forth, and the reciprocating lifting of the lifting rod 605 drives the cutter 607 at its top to cut the pole piece material at equal intervals. The present application sets a power source, and can realize the rolling and traction conveying of the pole piece material when the upper and lower pressure rollers are synchronously reversed. The fixed roller 609 further drives the rotation of the movable roller 107 through the cone wheel key shaft 103, which meets the use requirements of adjusting the roller distance between the movable roller 107 and the fixed roller 609 during operation, and can also meet the continuous power supply for fixed-length cutting, so that the pole piece material can be continuously rolled and cut under the action of a power source, thereby improving production efficiency.

[0035] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various implementations with various modifications suitable for specific uses.

Claims

1. A heating and pressurizing device for lithium-ion battery production, comprising a roller distance adjustment component (1), characterized in that: The roller spacing adjustment assembly (1) comprises a gantry (101), an upper arm (102), a cone wheel key shaft (103), a slide plate (104), an adjustment screw (105), a scraper (106), a movable roller (107), a driven umbrella wheel (108), a connecting piece (109) and a transmission key sleeve (110); the gantry (101) is fixedly connected to the upper arm (102) at the side end, and the cone wheel key shaft (103) is rotatably installed at the bottom end of the upper arm (102); the gantry (101) is slidably installed with a slide plate (104), and the top end of the slide plate (104) is connected to the adjustment screw (105); A scraper (106) is fixedly mounted on the top of the front end of the plate (104), and a movable roller (107) is rotatably mounted on the bottom of the front end of the slide plate (104) through a bearing seat, and a driven umbrella wheel (108) is coaxially connected to the side end of the movable roller (107), a connecting piece (109) is fixedly connected to the side end of the slide plate (104), and a transmission key sleeve (110) is rotatably mounted on the end of the connecting piece (109), the key groove inside the transmission key sleeve (110) cooperates with the key protrusion on the cone wheel key shaft (103), and the transmission key sleeve (110) is rotated to transmit the movable roller (107) through meshing with the driven umbrella wheel (108).

2. A heating and pressurizing device for lithium-ion battery production according to claim 1, characterized in that: The gantry (101) is welded and fixed to the top of the front end of the frame (2), and a notch (3) is provided in the middle of the front end of the frame (2). Support legs (4) are fixedly installed around the bottom of the frame (2), and a lower arm (5) is fixedly connected to the side of the front support leg (4), and the lower arm (5) is connected to the other end of the cone wheel key shaft (103) away from the upper arm (102).

3. A heating and pressurizing device for lithium-ion battery production according to claim 2, characterized in that: A linkage slitting assembly (6) is arranged at the top of the rear end of the frame (2), and the linkage slitting assembly (6) comprises a shelf (601) and a motor (602). The shelf (601) is fixedly mounted on the inner side of four supporting legs (4), and the motor (602) is bolted to the middle of the shelf (601).

4. A heating and pressurizing device for lithium-ion battery production according to claim 3, characterized in that: The linkage slitting assembly (6) further comprises a flywheel (603) and an eccentric connecting rod (604); the end of the output shaft of the motor (602) is connected to the flywheel (603), and the disk of the flywheel (603) is rotatably connected to the eccentric connecting rod (604).

5. A heating and pressurizing device for lithium-ion battery production according to claim 4, characterized in that: The linkage slitting assembly (6) further comprises a lifting rod (605), a guide sleeve (606) and a cutter (607); the end of the eccentric connecting rod (604) facing away from the flywheel (603) is rotatably connected to the root of the lifting rod (605); the lifting rod (605) is respectively slidably matched with the guide sleeves (606) on both sides of the frame (2); and the cutter (607) is fixed to the top end of the lifting rod (605) by bolts.

6. A heating and pressurizing device for lithium-ion battery production according to claim 5, characterized in that: The linkage slitting assembly (6) further comprises a synchronous belt (608), a fixed roller (609) and a driving bevel wheel (610); a synchronous belt (608) is provided on a pulley sleeve in the middle of the output shaft of the motor (602); and the synchronous belt (608) is drivingly connected to the fixed roller (609) at one end of the output shaft away from the motor (602); and the driving bevel wheel (610) coaxial with the side end of the fixed roller (609) is meshed with the bevel wheel below the bevel wheel key shaft (103) for transmission; the fixed roller (609) is exposed through the top plane of the frame (2) through the notch (3) and is located directly below the movable roller (107); and the fixed roller (609) and the movable roller (107) are parallel to the axis and rotate synchronously in the opposite direction.

7. A heating and pressurizing device for lithium-ion battery production according to claim 6, characterized in that: The front end of the frame (2) is fixedly connected with a drying box (7), and the middle bottom end of the drying box (7) is composed of a contact drying plate (8), one side of the contact drying plate (8) is provided with a slope (9) inclined from front to rear, and the other side of the contact drying plate (8) is provided with hot air drying fans (10) at equal intervals.

8. The heating and pressurizing device for lithium-ion battery production according to claim 7, characterized in that: A solvent recovery component (11) is attached to the bottom of the contact drying plate (8), and the solvent recovery component (11) includes a frame (1101) and a semiconductor cooling sheet (1102). The frame (1101) is arranged at equal intervals on the bottom plane of the contact drying plate (8) and fixed by screws, and semiconductor cooling sheets (1102) with different powers are embedded inside the frame (1101). The power of the semiconductor cooling sheets (1102) located on the bottom plane of the contact drying plate (8) gradually increases from front to back, and the hot end of the semiconductor cooling sheet (1102) faces upward and is tightly fitted to the bottom plane of the contact drying plate (8) through thermal grease.

9. A heating and pressurizing device for lithium-ion battery production according to claim 8, characterized in that: The solvent recovery component (11) further comprises a cooling sleeve (1103) and a connecting pipe (1104); the cold end of the semiconductor refrigeration plate (1102) faces downward and is fixedly connected to the cooling sleeve (1103); and the connecting pipe (1104) penetrates and connects adjacent cooling sleeves (1103).

10. The heating and pressurizing device for lithium-ion battery production according to claim 9, characterized in that: The solvent recovery assembly (11) further comprises a recovery cover (1105) and a collection bottle (1106); one end of the connecting tube (1104) is connected to the recovery cover (1105), and the recovery cover (1105) covers the top of the contact drying plate (8); the other end of the connecting tube (1104) is connected to a side connection port of the collection bottle (1106), and the top connection port of the collection bottle (1106) is threadedly fixed to the end of the ramp (9).

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