Production equipment and method for lithium ion battery foil

Abstract

The invention discloses production equipment and method for lithium ion battery foils, and relates to the field of battery foil production equipment.The production equipment comprises a cast-rolling main machine and a support, two driving shafts are rotationally installed in the cast-rolling main machine, rollers are installed on the two driving shafts, a casting nozzle is installed in the support, an aluminum strip is inserted into the casting nozzle, and the aluminum strip is connected with the cast-rolling main machine. The aluminum strip penetrates through the position between the two rollers. The device further comprises a synchronous cleaning mechanism and a displacement monitoring mechanism. It needs to be explained that in the embodiment of the invention, the thickness of the edge of the aluminum strip is made to be thicker than that of the middle, rolling strip breakage is reduced, in the rolling process, the surface of the aluminum strip can be fully cleaned, and meanwhile when a roller shifts, a red warning lamp is turned on to remind a worker to carry out treatment; in addition, when residues are left on the roller, the scraping frame rotates and tilts, the scraping frame makes contact with the roller, then the residues are scraped, the problem that the residues are repeatedly bonded to the roller is avoided, and the production quality of aluminum foil is fully guaranteed.

Description

Technical Field

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

[0002] The production process of lithium-ion batteries is a complex and delicate process involving multiple key steps and quality control points. The positive electrode material is coated on the positive electrode current collector aluminum foil. Generally, the coating is divided into a coating area and a blank area. The coating area is generally coated with about 200μm of lithium iron phosphate, lithium cobalt oxide, lithium manganese oxide or ternary positive electrode materials. The blank area is not coated, and only the original thickness of the aluminum foil is retained, which is generally 10-18μm, as the positive electrode ear of the later battery. The post-coating process is the roller pressing process. In this process, the positive electrode material coated on the surface of the aluminum foil is compacted with a roller to increase the compaction density and increase the battery capacity.

[0003] It should be noted that due to the inconsistency between the thickness of the aluminum foil tab area and the coating area during compaction, the force is uneven, which makes it particularly easy for the strip to break during rolling, affecting production efficiency and increasing battery costs. The rolling break rate in the industry is generally 5-8 times per 10,000 meters, and the thickness of the tab area is thin. According to statistical data, 90% of the breaks start from the tab area. Since the mechanical properties of the aluminum foil in the tab area cannot withstand the roller pressure, cracks occur, leading to breakage. In addition, in the production process of aluminum foil, when the aluminum foil is melted into aluminum strip for rolling, due to exposure to the workshop environment and the residual value of aluminum water, impurities are easily adhered to the surface of the aluminum strip, and impurities are also easily adhered to the rollers. If these impurities cannot be cleaned in time, a large amount of aluminum foil will be scrapped. Summary of the invention

[0004] The object of the present invention is to provide a production device and method for lithium ion battery foil to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A production device for lithium-ion battery foil, comprising a casting and rolling main machine and a bracket, wherein two driving shafts are rotatably installed in the casting and rolling main machine, and rollers are installed on the two driving shafts, a casting nozzle is installed in the bracket, and an aluminum strip is inserted into the casting nozzle, and the aluminum strip passes between the two rollers, and a driving unit is installed on one side of the casting and rolling main machine, and the driving unit drives the two driving shafts to rotate, and drives the two rollers to rotate to roll the aluminum strip;

[0007] It also includes a synchronous cleaning mechanism, which is installed on the feeding side of the casting and rolling main machine, and the casting and rolling main machine is used to actively clean the surface of the aluminum strip; the synchronous cleaning mechanism includes two mounting frames, both of which are installed on the casting and rolling main machine, and a cleaning frame is movably installed on one side of the two mounting frames close to each other, and a plurality of cleaning brushes are rotatably installed on the cleaning frame, and the plurality of cleaning brushes rotate to clean the surface of the aluminum strip, and a correction frame for correcting the aluminum strip is installed on the mounting frame;

[0008] It also includes a displacement monitoring mechanism, which is installed on the side of the casting and rolling main machine away from the mounting frame, and is used to monitor the displacement of the rolling roller; the displacement monitoring mechanism includes two support frames, both of which are installed on the side of the casting and rolling main machine away from the mounting frame, a mounting seat is movably installed on one side of the support frame, two monitoring frames are movably installed on one side of the mounting seat, a monitoring roller is rotatably installed between the two monitoring frames, and the monitoring roller does not contact the rolling roller;

[0009] An active scraping mechanism is installed on the displacement monitoring mechanism, and the active scraping mechanism is used to scrape impurities on the roller; the active scraping mechanism includes two scraping frames, and the two scraping frames are rotatably installed on the two supporting frames respectively. The scraping frames rotate and contact with the roller to scrape the residue on the roller.

[0010] Further, in a preferred embodiment of the present invention, the synchronous cleaning mechanism further comprises two rotating columns, the two mounting frames are provided with mounting cavities, the two mounting cavities are provided with rotating shafts rotatably mounted, the two rotating columns are respectively mounted on the two rotating shafts, and the cleaning frame is movably mounted in the mounting cavities;

[0011] The rotating column is provided with an inclined annular groove in an annular manner, and a semicircular driving block is installed on the top side of the cleaning frame. The semicircular driving block is located in the inclined annular groove. The rotating column rotates to drive the semicircular driving block to move through the inclined annular groove, and the movement of the semicircular driving block is used to drive the cleaning frame to move.

[0012] The ends of the two driving shafts and the two rotating shafts are both equipped with pulleys, and the pulleys on one driving shaft and one rotating shaft are sleeved with belts.

[0013] Further, in a preferred embodiment of the present invention, a plurality of rotating shafts are rotatably mounted on one side of the cleaning frame close to the roller, a plurality of the rotating shafts are sleeved with transmission gears, the plurality of transmission gears are meshed with each other, and a plurality of the cleaning brushes are respectively mounted on the ends of the plurality of the rotating shafts;

[0014] A wheel axle is rotatably mounted on one side of the cleaning frame, a driving wheel is mounted on the end of the wheel axle, bevel gears are sleeved on the wheel axle and a rotating shaft close to the wheel axle, and the two bevel gears are meshed with each other.

[0015] Further, in a preferred embodiment of the present invention, the displacement monitoring mechanism further includes a red warning light, which is mounted on the top side of the casting and rolling main machine, and the mounting seat is provided with two telescopic slots, and the two monitoring frames are movably mounted in the two telescopic slots respectively, and a first switch is mounted on the inner wall of the telescopic slot, and the first switch is electrically connected to the red warning light, and the movement of the monitoring frame is used to trigger the first switch;

[0016] A support spring is installed at one end of the monitoring frame, and the other end of the support spring is installed on the inner wall of the telescopic slot.

[0017] Further, in a preferred embodiment of the present invention, a rotating frame is installed on the mounting seat, a mounting shaft is installed on the support frame, and the rotating frame is sleeved on the mounting shaft;

[0018] A torsion spring is installed on the inner wall of the rotating frame, and the other end of the torsion spring is installed on the inner wall of the rotating frame.

[0019] Furthermore, in a preferred embodiment of the present invention, the active scraping mechanism further includes a vacuum cleaner and a yellow warning light, the vacuum cleaner and the yellow warning light are both mounted on the top side of the casting and rolling main machine, a vacuum pipe is mounted on the vacuum cleaner, and adsorption boxes are mounted on the two scraping frames, and the vacuum pipe is connected to the two adsorption boxes;

[0020] A second switch is installed on the bottom side of the support frame, the vacuum cleaner and the yellow warning light are electrically connected to the second switch, and the scraping frame rotates to squeeze and trigger the second switch.

[0021] Further, in a preferred embodiment of the present invention, a connecting shaft is rotatably mounted on the support frame, the scraping frame is sleeved on the connecting shaft, two linkage gears are mounted on the connecting shaft, two driving rack frames are movably mounted on the bottom side of the support frame, both of the two driving rack frames are in contact with the bottom side of the mounting seat, and the two driving rack frames are respectively meshed with the two linkage gears, and an extrusion wheel is rotatably mounted on one side of the driving rack frame, and the extrusion wheel is in contact with the bottom side of the mounting seat;

[0022] Two stretching grooves are provided on the bottom side of the support frame, a stretching rod is movably installed in the stretching groove, the stretching rod is installed on the driving rack frame, a return spring is installed on the inner wall of the stretching groove, and the other end of the return spring is installed on the stretching rod.

[0023] Further, in a preferred embodiment of the present invention, a linkage frame is installed on one side of the driving rack frame, a clamping rod is movably installed on the linkage frame, and the clamping rod is inserted into the bottom side of the supporting frame to limit the linkage frame;

[0024] A return spring is installed on the clamping rod, and the other end of the return spring is installed on the linkage frame.

[0025] Furthermore, in a preferred embodiment of the present invention, the two side portions of the casting nozzle are 0.15 mm thicker than the middle portion.

[0026] The present application also proposes a production method corresponding to a lithium-ion battery foil production device, comprising the following steps:

[0027] S1. Start the casting and rolling main machine, so that the driving unit drives two driving shafts to rotate, the two driving shafts drive two rollers to rotate to roll the aluminum strip, the two driving shafts rotate to drive two pulleys to rotate, the two pulleys drive the other two pulleys to rotate through two belts, so that the two pulleys drive the two rotating shafts to rotate, and then the two rotating shafts drive the two rotating columns to rotate, the rotating column drives the semicircular driving block to move through the inclined ring groove, the movement of the semicircular driving block is used to drive the cleaning frame to move, the cleaning frame synchronously drives multiple rotating shafts to move, and the multiple rotating shafts drive multiple cleaning brushes to clean the surface of the aluminum strip;

[0028] S2, the cleaning frame moves and drives the driving wheel to move on the surface of the aluminum strip, so that the driving wheel rotates, the driving wheel rotates through a bevel gear to drive another bevel gear to rotate, and drives a rotating shaft to rotate, the rotating shaft rotates to drive the transmission gear to rotate, and the rotation of one transmission gear drives multiple mutually meshing transmission gears to rotate synchronously, so that the transmission gear drives the cleaning brush to rotate through the rotating shaft, and then the cleaning brush rotates synchronously when moving, and the surface of the aluminum strip is rotated and cleaned;

[0029] S3, the roller is displaced and squeezes the monitoring roller. The movement of the monitoring roller drives the two monitoring frames to move. The monitoring frames move in the telescopic slot and force the supporting springs. The monitoring frames move and squeeze the first switch, so that the first switch is triggered, and then the red warning light is turned on, prompting the staff that the roller is displaced;

[0030] S4. The rotation of the roller causes the residue to drive the monitoring roller to rotate. The monitoring roller drives the mounting seat to rotate through two monitoring frames, so that the mounting seat drives the rotating frame to rotate. The rotating frame rotates on the mounting shaft and drives the torsion spring to be stressed. The mounting seat rotates and squeezes the two driving racks to move. The driving rack drives the linkage gear to rotate, so that the linkage gear drives the scraping frame to rotate and tilt up through the connecting shaft, thereby making the scraping frame contact with the roller to scrape off the residue. The rotation and tilting of the scraping frame triggers the second switch, so that the vacuum cleaner and the yellow warning light are started synchronously. The yellow warning light is on to remind the staff to check the roller. The vacuum cleaner starts to suck away the scraped residue through the vacuum tube and two suction boxes.

[0031] The beneficial effects of the production equipment and method for lithium ion battery foil proposed by the present invention are:

[0032] In the present invention, starting from the production of aluminum foil blanks, the thickness of the edge is made thicker than that of the middle. The breaking rate of 15μm aluminum foil during rolling is reduced by about 20% compared with that of 12μm. Moreover, simply increasing the thickness of the tab will not significantly increase the volume of the battery and affect the original capacity of the battery. The thickness of the final battery aluminum foil at the edge of 30-50mm is increased to 15μm, and the thickness of the remaining coating area is maintained at 12μm. In this way, an aluminum foil of unequal thickness is formed, which is thin in the middle and thick at the edge in cross section, thereby reducing the breaking rate of rolling.

[0033] Furthermore, in the present invention, through the setting of a synchronous cleaning mechanism, when the casting and rolling main machine rolls the aluminum strip, the cleaning frame drives multiple rotating shafts to move when it moves, and the multiple rotating shafts drive multiple cleaning brushes to clean the surface of the aluminum strip. At the same time, the cleaning frame moves to drive the driving wheel to move on the surface of the aluminum strip, so that the driving wheel rotates, and the rotation of the driving wheel drives another bevel gear to rotate through a bevel gear, thereby driving a rotating shaft to rotate, and the rotation of the rotating shaft drives the transmission gear to rotate, so that one transmission gear rotates to drive multiple mutually meshing transmission gears to rotate synchronously, so that the transmission gear drives the cleaning brush to rotate through the rotating shaft, so that the cleaning brush rotates synchronously when it moves, and then achieves the purpose of fully cleaning the surface of the aluminum strip, avoiding the problem of residue remaining on the surface of the aluminum strip and affecting the production of aluminum foil.

[0034] Furthermore, in the present invention, through the setting of the displacement monitoring mechanism, when the rolling roller is displaced, the rolling roller squeezes the monitoring roller, and the movement of the monitoring roller drives the two monitoring frames to move. The monitoring frames move in the telescopic groove and cause the supporting springs to be stressed. At the same time, the monitoring frames move to squeeze the first switch, so that the first switch is triggered, and then the red warning light is turned on, prompting the staff that the rolling roller is displaced, which is convenient for the staff to carry out timely maintenance and avoid the problem of affecting the production quality of aluminum foil caused by the displacement of the rolling roller.

[0035] Furthermore, in the present invention, through the setting of the active scraping mechanism, when residue remains on the rolling roller, the rolling roller rotates so that the residue drives the monitoring roller to rotate, and the monitoring roller drives the mounting seat to rotate through the two monitoring frames, so that the mounting seat drives the rotating frame to rotate, and the rotating frame rotates on the mounting shaft and drives the torsion spring to be stressed. At the same time, the mounting seat rotates and squeezes the two driving racks to move, and the driving rack rack moves in the stretching groove through the stretching rod, and drives the return spring to be stressed, and the driving rack rack drives the linkage gear to rotate, so that the linkage gear drives the scraping frame to rotate and tilt through the connecting shaft, and then the scraping frame contacts with the rolling roller, and then scrapes off the residue. At the same time, the scraping frame rotates and tilts to trigger the second switch, so that the vacuum cleaner and the yellow warning light are started synchronously, so that the yellow warning light can be turned on to remind the staff to check the rolling roller, and the vacuum cleaner is started to suck away the scraped residue through the dust suction pipe and the two adsorption boxes to avoid the problem of repeated adhesion to the rolling roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a production device for lithium-ion battery foil provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the back structure of a production device for lithium-ion battery foil provided by an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of a structure of a semicircular driving block connected to a vacuum cleaner and other structures in a production device for lithium-ion battery foil provided by an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of a partial cross-sectional structure of a connection between a mounting frame and a rotating column and other structures of a lithium-ion battery foil production device provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the structure of a bevel gear and a cleaning brush connected to a lithium ion battery foil production device provided by an embodiment of the present invention;

[0041] Figure 6 A schematic structural diagram of a rotating column for a lithium-ion battery foil production device provided by an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of the structure of the connection between a support frame and a scraping frame and other structures of a production device for lithium-ion battery foil provided by an embodiment of the present invention;

[0043] Figure 8 A schematic diagram of a fracture structure of a support frame and a scraping frame and other structures connected to a production device for lithium-ion battery foil provided by an embodiment of the present invention;

[0044] Fig. 9 A schematic diagram of a partial cross-sectional structure of a mounting base and a scraping frame and other structures connected to a production device for lithium-ion battery foil provided by an embodiment of the present invention;

[0045] Fig.10 A schematic diagram of a casting nozzle opening structure of a production device for lithium-ion battery foil provided in an embodiment of the present invention.

[0046] In the figure: 1-casting and rolling main machine; 2-bracket; 3-aluminum belt; 4-casting nozzle; 5-roller; 6-driving unit; 7-synchronous cleaning mechanism; 701-mounting frame; 702-cleaning frame; 703-mounting cavity; 704-rotating shaft; 705-rotating column; 706-inclined ring groove; 707-semicircular driving block; 708-pulley; 709-belt; 710-correction frame; 711-rotating shaft; 712-bevel gear; 713-transmission gear; 714-cleaning brush; 715-axle; 716-driving wheel; 8-displacement monitoring mechanism; 801-support frame; 802-mounting seat; 803-monitoring frame; 804- Monitoring roller; 805- telescopic slot; 806- supporting spring; 807- first switch; 808- red warning light; 809- rotating frame; 810- mounting shaft; 811- torsion spring; 9- active scraping mechanism; 901- scraping frame; 902- connecting shaft; 903- linkage gear; 904- driving rack frame; 905- stretching slot; 906- stretching rod; 907- pull-back spring; 908- extrusion wheel; 909- linkage frame; 910- clamping rod; 911- reset spring; 912- adsorption box; 913- dust suction pipe; 914- dust collector; 915- yellow warning light; 916- second switch; 10- driving shaft. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In addition, in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, the terms "horizontal", "vertical", "vertical" and the like do not mean that the components are required to be absolutely vertical, but can be slightly tilted. For example, "vertical" only means that its direction is more vertical than "horizontal", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0052] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Please refer to the attached manual Figure 1-10 An embodiment of the present invention provides a production device for lithium-ion battery foil, which includes a casting and rolling main machine 1 and a bracket 2. Two driving shafts 10 are rotatably installed in the casting and rolling main machine 1, and rollers 5 are installed on the two driving shafts 10; a casting nozzle 4 is installed in the bracket 2, and an aluminum strip 3 is inserted into the casting nozzle 4, and the aluminum strip 3 passes between the two rollers 5; a driving unit 6 is installed on one side of the casting and rolling main machine 1, and the driving unit 6 drives the two driving shafts 10 to rotate, and drives the two rollers 5 to rotate to roll the aluminum strip 3.

[0054] Please refer to the instruction manual Figure 3-6Furthermore, the production equipment for lithium-ion battery foil provided by the embodiment of the present invention further includes a synchronous cleaning mechanism 7, which is installed on the feeding side of the casting and rolling main machine 1, and the casting and rolling main machine 1 is used to actively clean the surface of the aluminum strip 3; the synchronous cleaning mechanism 7 includes two mounting frames 701, both of which are installed on the casting and rolling main machine 1, and the two mounting frames 701 are movably installed with a cleaning frame 702 on the side close to each other, and a plurality of cleaning brushes 714 are rotatably installed on the cleaning frame 702, and the plurality of cleaning brushes 714 rotate to clean the surface of the aluminum strip 3, and a correction frame 710 for correcting the aluminum strip 3 is installed on the mounting frame 701. It should be noted that in the embodiment of the present invention, when the casting and rolling main machine 1 rolls the aluminum strip 3, the cleaning frame 702 drives the plurality of rotating shafts 711 to move, and the plurality of rotating shafts 711 drive the plurality of cleaning brushes 714 to clean the surface of the aluminum strip 3, and the cleaning brushes 714 rotate synchronously when moving, so as to achieve the purpose of fully cleaning the surface of the aluminum strip 3, and avoid the problem that the residue is left on the surface of the aluminum strip 3 and affects the production of aluminum foil.

[0055] More specifically, the present invention also includes a displacement monitoring mechanism 8, which is installed on the side of the casting and rolling main machine 1 away from the mounting frame 701, and the displacement monitoring mechanism 8 is used to monitor the displacement of the rolling roller 5; the displacement monitoring mechanism 8 includes two support frames 801, and the two support frames 801 are both installed on the side of the casting and rolling main machine 1 away from the mounting frame 701, and a mounting seat 802 is movably installed on one side of the support frame 801, and two monitoring frames 803 are movably installed on one side of the mounting seat 802, and a monitoring roller 804 is rotatably installed between the two monitoring frames 803, and the monitoring roller 804 does not contact the rolling roller 5. It should be noted that, in the embodiment of the present invention, when the roller 5 is displaced, the roller 5 squeezes the monitoring roller 804, and the movement of the monitoring roller 804 drives the two monitoring frames 803 to move, and the monitoring frames 803 move in the telescopic slot 805, and cause the supporting spring 806 to be subjected to force, and at the same time, the monitoring frame 803 moves to squeeze the first switch 807, so that the first switch 807 is triggered, and then the red warning light is turned on, prompting the staff that the roller 5 is displaced, so that the staff can carry out timely maintenance and avoid the problem of affecting the production quality of aluminum foil caused by the displacement of the roller 5.

[0056] In addition, it should be emphasized that an active scraping mechanism 9 is installed on the displacement monitoring mechanism 8, and the active scraping mechanism 9 is used to scrape impurities on the roller 5; the active scraping mechanism 9 includes two scraping frames 901, and the two scraping frames 901 are rotatably installed on the two support frames 801 respectively, and the scraping frames 901 rotate and contact with the roller 5 to scrape the residue on the roller 5. It should be noted that in the embodiment of the present invention, when residues remain on the roller 5, the scraping frame 901 is rotated and tilted, and then the scraping frame 901 is brought into contact with the roller 5, and then the residue is scraped off to avoid the problem of repeated adhesion to the roller 5.

[0057] For further information, please refer to the attached manual. Figure 3-6 , a production device for lithium-ion battery foil provided by an embodiment of the present invention, wherein the synchronous cleaning mechanism 7 further comprises two rotating columns 705, two mounting frames 701 are provided with mounting cavities 703, and rotating shafts 704 are rotatably installed in the two mounting cavities 703, the two rotating columns 705 are respectively installed on the two rotating shafts 704, and the cleaning frame 702 is movably installed in the mounting cavity 703; in addition, an inclined annular groove 706 is annularly inclined on the rotating column 705, and a semicircular driving block 707 is installed on the top side of the cleaning frame 702, and the semicircular driving block 707 is located in the inclined annular groove 706, and the rotating column 705 rotates through the inclined annular groove 706 to drive the semicircular driving block 707 to move, and the movement of the semicircular driving block 707 is used to drive the cleaning frame 702 to move;

[0058] In addition, pulleys 708 are installed at the ends of the two driving shafts 10 and the two rotating shafts 704, and belts 709 are sleeved on the pulleys 708 on one driving shaft 10 and one rotating shaft 704. It should be noted that in the embodiment of the present invention, the two driving shafts 10 rotate to drive the two pulleys 708 to rotate, and the two pulleys 708 drive the other two pulleys 708 to rotate through the two belts 709, so that the two pulleys 708 drive the two rotating shafts 704 to rotate, and then the two rotating shafts 704 drive the two rotating columns 705 to rotate, at this time, the rotating column 705 drives the semicircular driving block 707 to move through the inclined annular groove 706, and the movement of the semicircular driving block 707 is used to drive the cleaning frame 702 to move, and the cleaning frame 702 drives the multiple rotating shafts 711 to move when moving, and the multiple rotating shafts 711 drive the multiple cleaning brushes 714 to clean the surface of the aluminum strip 3.

[0059] Please continue to refer to the instruction manual Figure 3-6 , further specifically, in the embodiment of the present invention, a plurality of rotating shafts 711 are rotatably mounted on one side of the cleaning frame 702 close to the roller 5, and a transmission gear 713 is sleeved on each of the plurality of rotating shafts 711, and the plurality of transmission gears 713 are meshed with each other, and a plurality of cleaning brushes 714 are respectively mounted on the ends of the plurality of rotating shafts 711;

[0060] In addition, a wheel axle 715 is rotatably mounted on one side of the cleaning frame 702, a driving wheel 716 is mounted on the end of the wheel axle 715, and a bevel gear 712 is sleeved on the wheel axle 715 and a rotating shaft 711 near the wheel axle 715, and the two bevel gears 712 are meshed. It should be noted that, in the embodiment of the present invention, the cleaning frame 702 moves and drives the driving wheel 716 to move on the surface of the aluminum strip 3, so that the driving wheel 716 rotates, and the driving wheel 716 rotates through a bevel gear 712 to drive another bevel gear 712 to rotate, thereby driving a rotating shaft 711 to rotate, and the rotation of the rotating shaft 711 drives the transmission gear 713 to rotate.

[0061] For further information, please refer to the attached manual. Figure 7 In an embodiment of the present invention, a production device for lithium-ion battery foil is provided. The displacement monitoring mechanism 8 further includes a red warning light 808, which is mounted on the top side of the casting and rolling main machine 1. Two telescopic grooves 805 are provided on the mounting seat 802. Two monitoring frames 803 are movably mounted in the two telescopic grooves 805, respectively. A first switch 807 is mounted on the inner wall of the telescopic groove 805. The first switch 807 is electrically connected to the red warning light 808. The movement of the monitoring frame 803 is used to trigger the first switch 807.

[0062] In addition, a support spring 806 is installed at one end of the monitoring frame 803, and the other end of the support spring 806 is installed on the inner wall of the telescopic slot 805. It should be noted that in the embodiment of the present invention, when the roller 5 is displaced, the roller 5 squeezes the monitoring roller 804, and the movement of the monitoring roller 804 drives the two monitoring frames 803 to move, and the monitoring frame 803 moves in the telescopic slot 805, and the support spring 806 is stressed. At the same time, the monitoring frame 803 moves to squeeze the first switch 807, so that the first switch 807 is triggered, and then the red warning light is turned on, prompting the staff that the roller 5 is displaced, so that the staff can perform timely maintenance.

[0063] Please continue to refer to the instruction manual Figure 7 , more specifically, in the embodiment of the present invention, a rotating frame 809 is installed on the mounting seat 802, a mounting shaft 810 is installed on the support frame 801, and the rotating frame 809 is sleeved on the mounting shaft 810; a torsion spring 811 is installed on the inner wall of the rotating frame 809, and the other end of the torsion spring 811 is installed on the inner wall of the rotating frame 809. It should be noted that in the embodiment of the present invention, when the mounting seat 802 rotates, the rotating frame 809 rotates on the mounting shaft 810, and drives the torsion spring 811 to bear force, so under the resilience of the torsion spring 811, the mounting seat 802 can be reset.

[0064] For further information, please refer to the attached manual. Figure 3 and Figure 7-9, an embodiment of the present invention provides a production device for lithium-ion battery foil, the active scraping mechanism 9 also includes a vacuum cleaner 914 and a yellow warning light 915, the vacuum cleaner 914 and the yellow warning light 915 are both installed on the top side of the casting and rolling main machine 1, a vacuum pipe 913 is installed on the vacuum cleaner 914, and suction boxes 912 are installed on the two scraping frames 901, and the vacuum pipe 913 is connected to the two suction boxes 912;

[0065] In addition, a second switch 916 is installed on the bottom side of the support frame 801, and the vacuum cleaner 914 and the yellow warning light 915 are both electrically connected to the second switch 916. The scraper frame 901 rotates to squeeze and trigger the second switch 916. It should be noted that in the embodiment of the present invention, when there is residue adhering to the roller 5, the scraper frame 901 rotates to scrape off the residue on the roller 5, and the vacuum cleaner 914 and the yellow warning light 915 are started synchronously, so that the yellow warning light 915 lights up to remind the staff to check the roller 5; the vacuum cleaner 914 is started to suck away the scraped residue through the vacuum pipe 913 and the two adsorption boxes 912, so as to avoid the problem of repeated adhesion to the roller 5.

[0066] More specifically, in the embodiment of the present invention, a connecting shaft 902 is rotatably mounted on the support frame 801, the scraper frame 901 is sleeved on the connecting shaft 902, two linkage gears 903 are mounted on the connecting shaft 902, two driving rack frames 904 are movably mounted on the bottom side of the support frame 801, the two driving rack frames 904 are both in contact with the bottom side of the mounting seat 802, and the two driving rack frames 904 are respectively meshed with the two linkage gears 903, and an extrusion wheel 908 is rotatably mounted on one side of the driving rack frame 904, and the extrusion wheel 908 is in contact with the bottom side of the mounting seat 802;

[0067] In addition, two stretching grooves 905 are provided on the bottom side of the support frame 801, and a stretching rod 906 is movably installed in the stretching groove 905, and the stretching rod 906 is installed on the driving rack frame 904. A pull-back spring 907 is installed on the inner wall of the stretching groove 905, and the other end of the pull-back spring 907 is installed on the stretching rod 906. It should be noted that in the embodiment of the present invention, when scraping off the residue, the roller 5 rotates so that the residue drives the monitoring roller 804 to rotate, and then the monitoring roller 804 squeezes the two driving rack frames 904 through the mounting seat 802 to move, and the driving rack frame 904 moves in the stretching groove 905 through the stretching rod 906, and drives the pull-back spring 907 to be stressed.

[0068] Please continue to refer to the instruction manual Figure 3 and Figure 7-9, more specifically, in the embodiment of the present invention, a linkage frame 909 is installed on one side of a driving rack frame 904, and a clamping rod 910 is movably installed on the linkage frame 909, and the clamping rod 910 is inserted on the bottom side of the support frame 801, which is used to limit the linkage frame 909; in addition, a return spring 911 is installed on the clamping rod 910, and the other end of the return spring 911 is installed on the linkage frame 909. It should be noted that in the embodiment of the present invention, when the driving rack frame 904 is squeezed and moved downward, the linkage frame 909 is driven to move synchronously, and when the clamping rod 910 of the linkage frame 909 is separated from the support frame 801, the clamping rod 910 is driven to be inserted on the bottom side of the support frame 801 under the contraction force of the reset spring 911, which is used to limit the movement of the linkage frame 909, so that the position of the scraping frame 901 remains fixed and the residue is scraped off.

[0069] In addition, please refer to the instructions attached Figure 1 and Fig.10 , it is further necessary to emphasize that, in the embodiment of the present invention, the opening of the casting nozzle 4 within the range of 100mm on both sides is 0.15mm thicker than other places, so as to make the thickness of the outlet aluminum strip 3 within the range of 100mm on both sides thicker by about 0.3mm than other places. It should be noted that, in the embodiment of the present invention, the thickness of the edge is made thicker than the middle from the production of the aluminum foil blank, and the breaking rate of the aluminum foil of 15μm during rolling is reduced by about 20% compared with that of 12μm, and simply increasing the thickness of the tab will not significantly increase the volume of the battery and affect the original capacity of the battery, so that the thickness of the edge of the final battery aluminum foil at the position of 30-50mm is increased to 15μm, and the thickness of the remaining coating area is maintained at 12μm, so as to form an aluminum foil of unequal thickness, which is thin in the middle and thick at the edge in cross section, reducing the breaking of the rolling strip.

[0070] Further, as a possible implementation scheme in the embodiment of the present invention, the corresponding production process flow includes: casting and rolling 6.0mm→cold rolling 4.0mm→cold rolling 2.5mm (530℃*3h high temperature annealing)→cold rolling 1.6mm→cold rolling 1.0mm→cold rolling 0.6mm→cold rolling 0.35mm→cold rolling 0.2mm→foil rolling 0.12mm→foil rolling 0.08mm→foil rolling 0.05mm→foil rolling 0.035mm→foil rolling 0.021mm→foil rolling 0.016mm→foil rolling 0.012mm.

[0071] In summary, the working principle of a production device for lithium-ion battery foil provided by an embodiment of the present invention, that is, the corresponding production method of aluminum foil is as follows:

[0072] When the casting and rolling main machine 1 rolls the aluminum strip 3, the driving unit 6 drives the two driving shafts 10 to rotate, and the two driving shafts 10 drive the two rollers 5 to rotate to roll the aluminum strip 3. The two driving shafts 10 rotate to drive the two pulleys 708 to rotate, and the two pulleys 708 drive the other two pulleys 708 to rotate through two belts 709, so that the two pulleys 708 drive the two rotating shafts 704 to rotate, and then the two rotating shafts 704 drive the two rotating columns 705 to rotate. At this time, the rotating column 705 drives the semicircular driving block 707 to move through the inclined annular groove 706, and the movement of the semicircular driving block 707 is used to drive the cleaning frame 702 to move. When the cleaning frame 702 moves, it drives multiple rotating shafts 711 to move, and the multiple rotating shafts 711 drive The cleaning brushes 714 are driven to clean the surface of the aluminum strip 3; at the same time, the cleaning frame 702 moves to drive the driving wheel 716 to move on the surface of the aluminum strip 3, so that the driving wheel 716 rotates, and the driving wheel 716 rotates through a bevel gear 712 to drive another bevel gear 712 to rotate, thereby driving a rotating shaft 711 to rotate, and the rotating shaft 711 rotates to drive the transmission gear 713 to rotate, so that the rotation of a transmission gear 713 drives multiple mutually meshing transmission gears 713 to rotate synchronously, so that the transmission gear 713 drives the cleaning brush 714 to rotate through the rotating shaft 711, so that the cleaning brush 714 rotates synchronously when moving, and then the purpose of fully cleaning the surface of the aluminum strip 3 is achieved, thereby avoiding the problem that residues are left on the surface of the aluminum strip 3 and affect the production of aluminum foil;

[0073] Furthermore, when the roller 5 is displaced, the roller 5 squeezes the monitoring roller 804, and the movement of the monitoring roller 804 drives the two monitoring frames 803 to move, and the monitoring frames 803 move in the telescopic slot 805, and force is applied to the supporting spring 806, and at the same time, the monitoring frame 803 moves and squeezes the first switch 807, so that the first switch 807 is triggered, and then the red warning light is turned on, prompting the staff that the roller 5 is displaced, so that the staff can perform timely maintenance, and avoid the problem of affecting the production quality of aluminum foil caused by the displacement of the roller 5;

[0074] Furthermore, when residues remain on the roller 5, the roller 5 is rotated, and then the residues drive the monitoring roller 804 to rotate. The monitoring roller 804 drives the mounting seat 802 to rotate through the two monitoring frames 803, so that the mounting seat 802 drives the rotating frame 809 to rotate, and the rotating frame 809 rotates on the mounting shaft 810, and drives the torsion spring 811 to be stressed. At the same time, the mounting seat 802 rotates and squeezes the two driving racks 904 to move. The driving rack 904 moves in the stretching groove 905 through the stretching rod 906, and drives the pull-back spring 907 to be stressed, and the driving rack 904 drives The linkage gear 903 rotates, so that the linkage gear 903 drives the scraper frame 901 to rotate and tilt up through the connecting shaft 902, and then the scraper frame 901 contacts the roller 5, and then the residue is scraped off. At the same time, the scraper frame 901 rotates and tilts up to trigger the second switch 916, so that the vacuum cleaner 914 and the yellow warning light 915 are started synchronously, and the yellow warning light 915 is lit to remind the staff to check the roller 5. In addition, the vacuum cleaner 914 is started to suck away the scraped residue through the vacuum tube 913 and the two suction boxes 912 to avoid the problem of repeated adhesion to the roller 5.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A production device for lithium ion battery foil, characterized in that: It comprises a casting and rolling main machine and a support, wherein two driving shafts are rotatably installed in the casting and rolling main machine, and rollers are installed on the two driving shafts, a casting nozzle is installed in the support, and an aluminum strip is inserted into the casting nozzle, and the aluminum strip passes between the two rollers, and a driving unit is installed on one side of the casting and rolling main machine, and the driving unit drives the two driving shafts to rotate, and drives the two rollers to rotate to roll the aluminum strip; It also includes a synchronous cleaning mechanism, which is installed on the feeding side of the casting and rolling main machine, and the casting and rolling main machine is used to actively clean the surface of the aluminum strip; the synchronous cleaning mechanism includes two mounting frames, both of which are installed on the casting and rolling main machine, and a cleaning frame is movably installed on one side of the two mounting frames close to each other, and a plurality of cleaning brushes are rotatably installed on the cleaning frame, and the plurality of cleaning brushes rotate to clean the surface of the aluminum strip, and a correction frame for correcting the aluminum strip is installed on the mounting frame; It also includes a displacement monitoring mechanism, which is installed on the side of the casting and rolling main machine away from the mounting frame, and is used to monitor the displacement of the rolling roller; the displacement monitoring mechanism includes two support frames, both of which are installed on the side of the casting and rolling main machine away from the mounting frame, a mounting seat is movably installed on one side of the support frame, two monitoring frames are movably installed on one side of the mounting seat, a monitoring roller is rotatably installed between the two monitoring frames, and the monitoring roller does not contact the rolling roller; An active scraping mechanism is installed on the displacement monitoring mechanism, and the active scraping mechanism is used to scrape impurities on the roller; the active scraping mechanism includes two scraping frames, and the two scraping frames are rotatably installed on the two supporting frames respectively. The scraping frames rotate and contact with the roller to scrape the residue on the roller.

2. The production equipment for lithium ion battery foil according to claim 1, characterized in that: The synchronous cleaning mechanism also includes two rotating columns, the two mounting frames are each provided with a mounting cavity, the two mounting cavities are each rotatably provided with a rotating shaft, the two rotating columns are respectively installed on the two rotating shafts, and the cleaning frame is movably installed in the mounting cavity; The rotating column is provided with an inclined annular groove in an annular manner, and a semicircular driving block is installed on the top side of the cleaning frame. The semicircular driving block is located in the inclined annular groove. The rotating column rotates to drive the semicircular driving block to move through the inclined annular groove, and the movement of the semicircular driving block is used to drive the cleaning frame to move. The ends of the two driving shafts and the two rotating shafts are both equipped with pulleys, and the pulleys on one driving shaft and one rotating shaft are sleeved with belts.

3. The production equipment for lithium ion battery foil according to claim 2, characterized in that: A plurality of rotating shafts are rotatably mounted on one side of the cleaning frame close to the roller, and transmission gears are sleeved on the plurality of rotating shafts. The plurality of transmission gears are meshed with each other, and a plurality of cleaning brushes are respectively mounted on the ends of the plurality of rotating shafts; A wheel axle is rotatably mounted on one side of the cleaning frame, a driving wheel is mounted on the end of the wheel axle, bevel gears are sleeved on the wheel axle and a rotating shaft close to the wheel axle, and the two bevel gears are meshed with each other.

4. The production equipment for lithium ion battery foil according to claim 1, characterized in that: The displacement monitoring mechanism further includes a red warning light, which is mounted on the top side of the casting and rolling main machine. Two telescopic slots are provided on the mounting seat, and the two monitoring frames are movably mounted in the two telescopic slots respectively. A first switch is mounted on the inner wall of the telescopic slot, and the first switch is electrically connected to the red warning light. The movement of the monitoring frame is used to trigger the first switch. A support spring is installed at one end of the monitoring frame, and the other end of the support spring is installed on the inner wall of the telescopic slot.

5. The production equipment for lithium ion battery foil according to claim 4, characterized in that: A rotating frame is installed on the mounting seat, a mounting shaft is installed on the support frame, and the rotating frame is sleeved on the mounting shaft; A torsion spring is installed on the inner wall of the rotating frame, and the other end of the torsion spring is installed on the inner wall of the rotating frame.

6. The production equipment for lithium ion battery foil according to claim 1, characterized in that: The active scraping mechanism also includes a vacuum cleaner and a yellow warning light, both of which are installed on the top side of the casting and rolling main machine, a vacuum pipe is installed on the vacuum cleaner, and adsorption boxes are installed on the two scraping frames, and the vacuum pipe is connected to the two adsorption boxes; A second switch is installed on the bottom side of the support frame, the vacuum cleaner and the yellow warning light are electrically connected to the second switch, and the scraping frame rotates to squeeze and trigger the second switch.

7. The production equipment for lithium ion battery foil according to claim 6, characterized in that: A connecting shaft is rotatably mounted on the support frame, the scraping frame is sleeved on the connecting shaft, two linkage gears are mounted on the connecting shaft, two driving rack frames are movably mounted on the bottom side of the support frame, both of the two driving rack frames are in contact with the bottom side of the mounting seat, and the two driving rack frames are respectively meshed with the two linkage gears, an extrusion wheel is rotatably mounted on one side of the driving rack frame, and the extrusion wheel is in contact with the bottom side of the mounting seat; Two stretching grooves are provided on the bottom side of the support frame, a stretching rod is movably installed in the stretching groove, the stretching rod is installed on the driving rack frame, a return spring is installed on the inner wall of the stretching groove, and the other end of the return spring is installed on the stretching rod.

8. The production equipment for lithium ion battery foil according to claim 7, characterized in that: A linkage frame is installed on one side of the driving rack frame, and a clamping rod is movably installed on the linkage frame. The clamping rod is inserted into the bottom side of the supporting frame to limit the linkage frame; A return spring is installed on the clamping rod, and the other end of the return spring is installed on the linkage frame.

9. The production equipment for lithium ion battery foil according to claim 1, characterized in that: The two side portions of the casting nozzle are 0.15 mm thicker than the middle portion.

10. A method for producing lithium ion battery foil, which is carried out according to the production equipment for lithium ion battery foil according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Start the casting and rolling main machine, so that the driving unit drives two driving shafts to rotate, the two driving shafts drive two rollers to rotate to roll the aluminum strip, the two driving shafts rotate to drive two pulleys to rotate, the two pulleys drive other two pulleys to rotate through two belts, the two pulleys drive two rotating shafts to rotate, so that the two rotating shafts drive two rotating columns to rotate, the rotating column drives the semicircular driving block to move through the inclined ring groove, the movement of the semicircular driving block is used to drive the cleaning frame to move, the cleaning frame synchronously drives multiple rotating shafts to move, and the multiple rotating shafts drive multiple cleaning brushes to clean the surface of the aluminum strip; S2, the cleaning frame moves and drives the driving wheel to move on the surface of the aluminum strip, so that the driving wheel rotates, the driving wheel rotates through a bevel gear to drive another bevel gear to rotate, and drives a rotating shaft to rotate, the rotating shaft rotates to drive the transmission gear to rotate, and the rotation of one transmission gear drives multiple mutually meshing transmission gears to rotate synchronously, so that the transmission gear drives the cleaning brush to rotate through the rotating shaft, and the cleaning brush rotates synchronously when moving, and the surface of the aluminum strip is rotated and cleaned; S3, the roller is displaced and squeezes the monitoring roller. The movement of the monitoring roller drives the two monitoring frames to move. The monitoring frames move in the telescopic slot and force the supporting springs. The monitoring frames move and squeeze the first switch, so that the first switch is triggered, and then the red warning light is turned on, prompting the staff that the roller is displaced; S4. The rotation of the roller causes the residue to drive the monitoring roller to rotate. The monitoring roller drives the mounting seat to rotate through two monitoring frames, so that the mounting seat drives the rotating frame to rotate. The rotating frame rotates on the mounting shaft and drives the torsion spring to be stressed. The mounting seat rotates and squeezes the two driving racks to move. The driving rack drives the linkage gear to rotate, so that the linkage gear drives the scraping frame to rotate and tilt up through the connecting shaft, thereby making the scraping frame contact with the roller to scrape off the residue. The rotation and tilting of the scraping frame triggers the second switch, so that the vacuum cleaner and the yellow warning light are started synchronously. The yellow warning light is on to remind the staff to check the roller. The vacuum cleaner starts to suck away the scraped residue through the vacuum tube and two suction boxes.

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