An intelligent winding device for lithium iron phosphate battery production

Abstract

The present invention discloses an intelligent winding device for lithium iron phosphate battery production, and the present invention relates to the technical field of lithium battery winding. The present invention comprises a winding rod, wherein two winding rods are symmetrically arranged inside a ring plate, and the outer surfaces of the two winding rods are rotationally connected to the inner wall of the ring plate, and the outer surface of the ring plate is rotationally connected to the inner wall of the cylinder, the outer surface of the cylinder is fixedly connected to the side of the connecting plate away from the plate body, the end of the winding transmission assembly is fixedly connected to the side of the plate body close to the connecting plate, and the winding transmission assembly is transmission-connected to both winding rods, the outer surface of the clamping assembly is fixedly connected to the outer surface of the winding rod, and the two winding rods are always one in a winding state and the other in a stationary state, so that while one winding rod is winding, the other winding rod is unloaded, saving unloading time, thereby improving processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery winding, and in particular to an intelligent winding device for producing lithium iron phosphate batteries. Background Art

[0002] The left side of the lithium iron phosphate battery is the positive electrode made of lithium iron phosphate material with an olivine structure, which is connected to the positive electrode of the battery by aluminum foil. The right side is the negative electrode of the battery composed of graphite, which is connected to the negative electrode of the battery by copper foil. In the middle is a polymer diaphragm, which separates the positive electrode from the negative electrode. Lithium ions can pass through the diaphragm, but electrons cannot. The battery is filled with electrolyte and the battery is sealed by a metal shell.

[0003] Lithium battery winding is an important process in battery production. It mainly involves placing the positive and negative electrodes of polymer batteries on a winding machine and then combining the materials together according to certain rules through winding. Currently, existing lithium battery winding machines usually use manual feeding to deliver materials to the winding machine, and after the lithium battery is wound, it needs to be cut. Wrinkles are easily generated at the cutting point during winding, which can easily lead to loose electrodes, resulting in wrinkles that affect product quality. Therefore, we proposed an intelligent winding device for lithium iron phosphate battery production. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an intelligent winding device for lithium iron phosphate battery production, comprising:

[0005] A plate body, and a connecting plate arranged on a side of the plate body;

[0006] A winding mechanism, the winding mechanism having a winding structure, used for winding the positive electrode, the separator, the negative electrode, and the separator in sequence;

[0007] An unwinding mechanism, the unwinding mechanism having four unwinding structures for respectively unwinding the positive electrode, the separator, the negative electrode, and the separator, and a shell arranged on the unwinding mechanism close to the side of the plate body;

[0008] The side surface of the plate body is fixedly connected to the end of the connecting plate, the side of the connecting plate away from the plate body is fixedly connected to the outer surface of the winding mechanism, the outer surface of the shell is fixedly connected to the side of the plate body close to the connecting plate, and the inner wall of the shell is fixedly connected to the outer surface of the unwinding mechanism;

[0009] Wherein, the winding mechanism comprises:

[0010] A winding rod, the outside of which is provided with a clamping assembly, and a ring plate provided at the end of the winding rod;

[0011] A cylinder, wherein a winding transmission assembly is arranged inside the cylinder;

[0012] Two winding rods are symmetrically arranged inside the ring plate, and the outer surfaces of the two winding rods are rotatably connected to the inner wall of the ring plate, and the outer surface of the ring plate is rotatably connected to the inner wall of the cylinder, the outer surface of the cylinder is fixedly connected to the side of the connecting plate away from the plate body, the end of the winding transmission assembly is fixedly connected to the side of the plate body close to the connecting plate, and the winding transmission assembly is transmission-connected to the two winding rods, the outer surface of the clamping assembly is fixedly connected to the outer surface of the winding rod, the unwinding mechanism unwinds the positive electrode, diaphragm, negative electrode, and diaphragm respectively, and at the same time, the positive electrode, diaphragm, negative electrode, and diaphragm are clamped to the surface of the winding rod close to the unwinding mechanism through the clamping assembly The winding transmission assembly drives the winding rod to rotate in the direction that the positive electrode first contacts the winding rod. After winding to a predetermined number of turns, the winding transmission assembly drives the ring plate to rotate, driving the two winding rods to rotate. The two winding rods exchange positions, and the unwound winding rod is placed on the surface of the diaphragm to straighten the positive electrode, diaphragm, negative electrode, and diaphragm. At this time, it is cut to complete a production process. At the same time, the winding transmission assembly drives the other winding rod to rotate and wind again, thereby completing continuous processing. The two winding rods are always one in a winding state and the other in a stationary state, so that one winding rod can be unloaded while the other winding rod is winding, saving unloading time and thus improving processing efficiency.

[0013] Furthermore, the inner wall of the ring plate is fixedly connected to a column, and cutting knives are symmetrically arranged at the interval between the two winding rods, and the two cutting knives are both arranged in an arc shape, and the sides of the two cutting knives close to each other are fixedly connected to the outer surface of the column, and the sides of the two cutting knives away from each other are arranged in a serrated shape. In the process of the two winding rods rotating and exchanging positions, the cutting knives contact with the material to complete the cutting of the material, and during rotation, the arc surface of the cutting knife first contacts with the material, and its serrated side contacts with the material to cut the material. The serrated structure can cut the material more quickly, and the setting of the arc surface ensures that the saw teeth of the cutting knife will not scratch the material during rotation, will not cause damage to the material, and avoid affecting the next winding.

[0014] Furthermore, a rotating seat is symmetrically arranged at the interval between the two winding rods, and the two rotating seats are both arranged at the interval between the winding rod and the cutting knife, and the rotating seat is fixedly connected to the outer surface of the column, and the inner walls of the two rotating seats are rotatably connected to an arc plate through a rotating rod, and the side of the arc plate away from the winding rod is fixedly connected to an elastic rod, and the end of the elastic rod away from the arc plate is fixedly connected to the outer surface of the column, and the number of the elastic rods is evenly arranged. After the material is cut, part of it is still not wound, and the wound material contacts the inner side of the arc plate. Under the elastic force of the elastic rod, the arc plate is attached to the outer circle of the material, and the arc plate ensures that the material will not fall apart. At the same time, the winding rod continues to rotate after cutting, and the material continues to be wound. The abutment of the arc plate can smooth the end of the material when the material is rolled up and enters the interval between the arc plate and the winding rod, thereby avoiding wrinkles or twisting of the material, and obtaining a lithium battery with better conductive performance.

[0015] Furthermore, the clamping assembly includes a spring plate, and four of the spring plates are arranged along the circumference of the winding rod, the spring plate is fixedly connected to the outer surface of the winding rod, and the four spring plates and the winding rod form a cylinder, a slot is opened in the middle of the spring plate, a clamping block is arranged at the interval between the spring plate and the winding rod, and two of the clamping blocks are centrally symmetrical with the slot, and the clamping block is fixedly connected to the outer surface of the winding rod on one side away from the spring plate, the spring plate is pressed, the spring plate is deformed, the slot is opened, and the spring plate squeezes the clamping block, the two clamping blocks move away from each other, and then the positive electrode and the diaphragm are , negative electrode, and diaphragm are inserted into the four slots in turn, the clamping block fixes the material, and then the winding rod is driven to rotate, and the material is wound around the surface of the winding rod. The material is wound around the surface of the winding rod, and the spring plate is squeezed, so that the clamping block loosens the material. At this time, the material is wound loosely, and the material and the winding rod rotate slightly relative to each other, and the material leaves the slot. As the material is continuously wound, the material is finally tightly wound around the surface of the winding rod. The squeezing during winding makes the clamping block loosen the material and slightly rotate itself, thereby fixing and automatically loosening the material, making it convenient to remove the wound material from the surface of the winding rod.

[0016] Furthermore, the winding transmission assembly includes a winding motor, the winding motor is fixedly connected to a side of the plate body close to the connecting plate, the winding motor is fixedly connected to a winding shaft on a side away from the plate body, and the winding shaft is fixedly connected to an output end of the winding motor, one end of the winding shaft away from the winding motor is fixedly connected to a main gear, and the main gear is rotatably connected to the inner wall of the shell on a side away from the winding shaft, one end of the two winding rods close to the cylinder body passes through the ring plate and extends to the inside of the cylinder, and one end of the two winding rods located inside the cylinder is fixedly connected to a driven gear, and the main gear is only meshed and connected with the driven gear close to the unwinding mechanism, when the winding motor is started, the output end of the winding motor drives the winding shaft to rotate, the winding shaft rotates, drives the main gear to rotate, and only drives one driven gear to rotate, which drives the winding rod connected thereto to rotate, so as to wind the material, and the other winding rod does not rotate, thereby facilitating the removal of the wound lithium battery.

[0017] Furthermore, a sub-gear is provided at the interval between the winding motor and the main gear, and the sub-gear is provided with partial gear teeth, the inner wall of the sub-gear is fixedly connected to the outer surface of the winding shaft, and the sub-gear is arranged inside the cylinder, an eccentric gear ring is provided on the outer side of the sub-gear, and the center of the eccentric gear ring does not coincide with the center of the sub-gear, the outer surface of the eccentric gear ring is rotatably connected to the inner wall of the cylinder, and the eccentric gear ring is meshed with the sub-gear, a connecting column is provided at the interval between the driven gear and the eccentric gear ring, and both ends of the connecting column are respectively fixedly connected to the side of the driven gear and the eccentric gear ring close to each other, and the winding shaft rotates to drive the sub-gear to rotate The auxiliary gear and the eccentric gear ring are eccentrically arranged, and the auxiliary gear is only provided with some gear teeth, so that the auxiliary gear rotates one circle and intermittently drives the eccentric gear ring to rotate half a circle, which can prevent the eccentric gear ring from rotating all the time, thereby preventing the winding rod from rotating around the column during winding and causing premature cutting. The driven gear rotates for several circles to complete the winding. At the same time, the eccentric gear ring rotates, driving the connecting column to rotate, driving the driven gear to rotate around the column, and the other driven gear meshes with the main gear to complete the replacement of the winding rod. The driven gear meshing with the main gear rotates a certain number of circles, and the other driven gear does not rotate, so that the other driven gear can mesh after moving to the main gear, thereby avoiding damage caused by their collision with each other.

[0018] Furthermore, the unwinding mechanism includes an unwinding column, one end of the unwinding column close to the plate body is fixedly connected to a fixed circular plate, a limiting groove is provided on the outer surface of the unwinding column, the unwinding column is limitedly slidable with a movable circular plate through the limiting groove, the inner wall of the movable circular plate is slidably connected with a sliding rod, and the sliding rod is set in a crescent shape, the end of the sliding rod away from the movable circular plate is fixedly connected to the outer surface of the fixed circular plate, and the sliding rod is arranged along the circumference of the movable circular plate. The number of the unwinding columns is set to four, and the four unwinding columns are fixedly connected to the unwinding transmission assembly at one end close to the plate body, and the positive electrode, diaphragm, negative electrode, and diaphragm are wound onto the surface of the four unwinding columns in sequence, and the unwinding The transmission assembly drives the four unwinding cylinders to rotate, thereby completing the winding of the positive electrode, diaphragm, negative electrode, and diaphragm. The winding is driven by the electric energy of the unwinding transmission assembly, which can improve the winding efficiency and save the time of installing materials, thereby improving the processing efficiency. The movable circular plate can slide on the surface of the unwinding cylinder to adjust the interval between the fixed circular plate and the movable circular plate, so that materials of different widths can be placed, and the material can be prevented from being offset during unwinding, and the electrode can be prevented from leaking out of the diaphragm, thereby avoiding affecting the processing quality of the lithium battery. The setting of multiple slide bars can limit the movable circular plate to avoid the movable circular plate from loosening due to friction between the material and the movable circular plate during winding, and the crescent-shaped slide bar can prevent the slide bar from loosening.

[0019] Furthermore, a threaded groove is provided on the outer surface of the unwinding column, and a limiting circular plate is arranged on the side of the movable circular plate away from the fixed circular plate, and the limiting circular plate is threadedly connected to the unwinding column through the threaded groove. The limiting circular plate is rotated. Since the limiting circular plate is threadedly connected to the unwinding column through the threaded groove, the limiting circular plate moves, driving the movable circular plate to move, thereby completing the width adjustment to adapt to the winding of lithium batteries of different sizes, and the threaded connection is very firm, which can prevent the movable circular plate from loosening due to rotation, thereby further preventing the material from being offset during unwinding and improving the processing quality of the lithium battery.

[0020] Furthermore, the unwinding transmission assembly includes an unwinding motor, an outer surface of the unwinding motor is fixedly connected to the inner wall of the shell, an unwinding shaft is provided at the interval between the unwinding motor and the unwinding column, and the unwinding shaft is fixedly connected to the output end of the unwinding motor, and the end of the unwinding shaft away from the unwinding motor is fixedly connected to the end of the unwinding column close to the shell. After the positive electrode, diaphragm, negative electrode and diaphragm are used up, new material is wound onto the surface of the sliding rod, and then the unwinding motor is started. The output end of the unwinding motor drives the unwinding shaft to rotate, and drives the unwinding column to rotate, so that the new material is wound onto the surfaces of several sliding rods, so as to carry out the next lithium battery winding.

[0021] Furthermore, a synchronous rotating shaft is provided at the interval between the shell and the unwinding column, and the number of the synchronous rotating shafts is three, the synchronous rotating shafts are respectively fixedly connected to the ends of the remaining three unwinding columns close to the shell, and the ends of the three synchronous rotating shafts away from the unwinding column are rotatably connected to the inner wall of the shell, the outer surfaces of the unwinding shaft and the three synchronous rotating shafts are fixedly connected with clamps, the outer surfaces of the four clamps are sleeved with conveyor belts, and the conveyor belt and the four clamps are all transmission connected, the unwinding shaft rotates, driving the clamps fixed thereto to rotate, thereby driving the conveyor belt transmission, driving the remaining three clamps to rotate synchronously, driving the three synchronous rotating shafts fixed thereto to rotate synchronously, thereby driving the four unwinding columns to rotate synchronously, so that when rewinding the positive electrode, diaphragm, negative electrode and diaphragm, the winding lengths of the four are made the same, so that the wound lithium battery can use up four materials at the same time, avoiding too much or too little single material, and avoiding material waste.

[0022] The present invention has the beneficial effects:

[0023] 1. The present invention sets a winding mechanism, and the winding rod rotates in the direction that the positive electrode first contacts the winding rod. After winding to a predetermined number of turns, the winding transmission component drives the ring plate to rotate, driving the two winding rods to rotate, and the two winding rods exchange positions. The unwound winding rod is placed on the surface of the diaphragm to straighten the positive electrode, diaphragm, negative electrode, and diaphragm. At this time, it is cut to complete a production process. At the same time, the winding transmission component drives the other winding rod to rotate and wind again, thereby completing continuous processing. The two winding rods are always one in a winding state and the other in a stationary state, so that one winding rod can be unloaded while the other winding rod is winding, saving unloading time and thus improving processing efficiency.

[0024] 2. The present invention sets a cutting knife. When rotating, the arc surface of the cutting knife first contacts the material, and the serrated side contacts the material to cut the material. The serrated structure can cut the material more quickly, and the setting of the arc surface ensures that the saw teeth of the cutting knife will not scratch the material during the rotation process, and will not cause damage to the material, thereby avoiding affecting the next winding.

[0025] 3. The present invention sets an arc plate. After the material is cut, part of it is still not wound. The wound material contacts the inner side of the arc plate. Under the elastic force of the elastic rod, the arc plate is pressed against the outer circle of the material. The arc plate ensures that the material will not spread out. At the same time, the winding rod continues to rotate after cutting, and the material continues to be wound. The pressing of the arc plate can smooth the end of the material when the material is rolled up and enters the gap between the arc plate and the winding rod, thereby avoiding wrinkles or twists in the material and obtaining a lithium battery with better conductive performance.

[0026] 4. The present invention sets a winding transmission component, and the number of rotations of the driven gear meshing with the main gear is determined, and the other driven gear does not rotate, so that the other driven gear can mesh with the main gear after moving to it, thereby avoiding damage caused by mutual collision. The sub-gear and the eccentric gear ring are eccentrically arranged, and the sub-gear is only provided with partial gear teeth, so that the sub-gear rotates one circle and intermittently drives the eccentric gear ring to rotate half a circle, which can avoid the eccentric gear ring from rotating continuously, thereby avoiding the winding rod from rotating around the column during winding and causing premature cutting.

[0027] 5. The present invention provides an unwinding mechanism, and the unwinding transmission assembly drives the reeling with electric energy, thereby improving the rewinding efficiency, saving the time for installing materials, and thus improving the processing efficiency. The movable circular plate can slide on the surface of the unwinding column, thereby adjusting the interval between the fixed circular plate and the movable circular plate, so that materials of different widths can be placed, and the material can be prevented from being offset during unwinding, and the electrode can be prevented from leaking out of the diaphragm, thereby avoiding affecting the processing quality of the lithium battery. The setting of multiple slide bars can limit the movable circular plate, and avoid the movable circular plate from loosening due to the friction of the material on the movable circular plate during winding, and the crescent-shaped slide bar can prevent the slide bar from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an intelligent winding device for producing lithium iron phosphate batteries according to the present invention;

[0029] Figure 2 It is a schematic diagram of the winding mechanism structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the cutting knife of the present invention;

[0031] Figure 4 For the present invention Figure 3 A magnified schematic diagram of part A;

[0032] Figure 5 It is a schematic diagram of the structure of the winding transmission assembly of the present invention;

[0033] Figure 6 This is a schematic diagram of the eccentric gear ring structure of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the unwinding mechanism of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the unwinding column of the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the unwinding transmission assembly of the present invention.

[0037] In the figure: 1, plate; 2, connecting plate; 3, winding mechanism; 31, winding rod; 32, cylinder; 33, winding transmission assembly; 331, winding motor; 332, winding shaft; 333, main gear; 334, driven gear; 335, eccentric gear ring; 336, auxiliary gear; 337, connecting column; 34, ring plate; 35, rotating seat; 36, arc plate; 37, spring rod; 38, column; 39, clamping assembly; 3 91. Spring plate; 392. Slot; 393. Clamping block; 310. Cutting knife; 4. Unwinding mechanism; 41. Unwinding column; 42. Unwinding transmission assembly; 421. Unwinding motor; 422. Unwinding shaft; 423. Retaining ring; 424. Conveyor belt; 425. Synchronous shaft; 43. Fixed circular plate; 44. Moving circular plate; 45. Sliding rod; 46. Limiting circular plate; 47. Limiting groove; 48. Threaded groove; 5. Housing. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present 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 embodiments with various modifications suitable for specific uses.

[0039] Example 1, please refer to Figure 1-Figure 6 The present invention is an intelligent winding device for producing lithium iron phosphate batteries, comprising:

[0040] A plate body 1, and a connecting plate 2 arranged on a side of the plate body 1;

[0041] A winding mechanism 3, the winding mechanism 3 having a winding structure, used for winding the positive electrode, the separator, the negative electrode, and the separator in sequence;

[0042] The unwinding mechanism 4 has four unwinding structures for respectively unwinding the positive electrode, the separator, the negative electrode, and the separator, and a shell 5 arranged on the side of the unwinding mechanism 4 close to the plate body 1;

[0043] The side surface of the plate body 1 is fixedly connected to the end of the connecting plate 2, the side of the connecting plate 2 away from the plate body 1 is fixedly connected to the outer surface of the winding mechanism 3, the outer surface of the shell 5 is fixedly connected to the side of the plate body 1 close to the connecting plate 2, and the inner wall of the shell 5 is fixedly connected to the outer surface of the unwinding mechanism 4;

[0044] Wherein, the winding mechanism 3 comprises:

[0045] A winding rod 31, the outside of which is provided with a clamping assembly 39, and a ring plate 34 provided at the end of the winding rod 31;

[0046] A cylinder 32, wherein a winding transmission assembly 33 is disposed inside the cylinder 32;

[0047] Two winding rods 31 are symmetrically arranged inside the ring plate 34, and the outer surfaces of the two winding rods 31 are rotatably connected to the inner wall of the ring plate 34, and the outer surface of the ring plate 34 is rotatably connected to the inner wall of the cylinder 32, the outer surface of the cylinder 32 is fixedly connected to the side of the connecting plate 2 away from the plate body 1, the end of the winding transmission assembly 33 is fixedly connected to the side of the plate body 1 close to the connecting plate 2, and the winding transmission assembly 33 and the two winding rods 31 are both transmission connected, the outer surface of the clamping assembly 39 is fixedly connected to the outer surface of the winding rod 31, the unwinding mechanism 4 unwinds the positive electrode, diaphragm, negative electrode, and diaphragm respectively, and at the same time, the positive electrode, diaphragm, negative electrode, and diaphragm are clamped to the surface of the winding rod 31 close to the unwinding mechanism 4 through the clamping assembly 39, and the winding The transmission assembly 33 drives the winding rod 31 to rotate in the direction in which the positive electrode first contacts the winding rod 31. After winding to a predetermined number of turns, the winding transmission assembly 33 drives the ring plate 34 to rotate, driving the two winding rods 31 to rotate. The two winding rods 31 exchange positions, and the unwound winding rod 31 is placed on the surface of the diaphragm to straighten the positive electrode, diaphragm, negative electrode, and diaphragm. At this time, it is cut to complete a production process. At the same time, the winding transmission assembly 33 drives the other winding rod 31 to rotate and wind again, thereby completing continuous processing. The two winding rods 31 are always one in a winding state and the other in a stationary state, so that one winding rod 31 can be unloaded while the other winding rod 31 is winding, saving unloading time and thus improving processing efficiency.

[0048] The inner wall of the ring plate 34 is fixedly connected to the column 38, and the cutting knives 310 are symmetrically arranged at the interval between the two winding rods 31, and the two cutting knives 310 are both arranged in an arc shape. The sides of the two cutting knives 310 that are close to each other are fixedly connected to the outer surface of the column 38, and the sides of the two cutting knives 310 that are away from each other are arranged in a serrated shape. In the process of the two winding rods 31 rotating and exchanging positions, the cutting knives 310 contact the material to complete the cutting of the material, and when rotating, the arc surface of the cutting knife 310 first contacts the material, and its serrated side contacts the material to cut the material. The serrated structure can cut the material more quickly, and the setting of the arc surface ensures that the saw teeth of the cutting knife 310 will not scratch the material during rotation, and will not cause damage to the material, thereby avoiding affecting the next winding.

[0049] The swivel seats 35 are symmetrically arranged at the interval between the two winding rods 31. The two swivel seats 35 are both arranged at the interval between the winding rod 31 and the cutting knife 310, and the swivel seats 35 are fixedly connected to the outer surface of the column 38. The inner walls of the two swivel seats 35 are rotatably connected to the arc plate 36 through the rotating rod. The side of the arc plate 36 away from the winding rod 31 is fixedly connected to the elastic rod 37. The end of the elastic rod 37 away from the arc plate 36 is fixedly connected to the outer surface of the column 38, and the number of the elastic rods 37 is evenly arranged. After the material is cut, part of it is still not wound. The wound material contacts the inner side of the arc plate 36. Under the elastic force of the elastic rod 37, the arc plate 36 is abutted against the outer circle of the material. The arc plate 36 ensures that the material will not spread out. At the same time, the winding rod 31 continues to rotate after cutting, and the material continues to be wound. The abutment of the arc plate 36 can smooth the end of the material when the material is rolled up and enters the interval between the arc plate 36 and the winding rod 31, thereby avoiding wrinkles or twists in the material, and obtaining a lithium battery with better conductive performance.

[0050] The clamping assembly 39 includes a spring plate 391, and four spring plates 391 are arranged along the circumference of the winding rod 31, the spring plate 391 is fixedly connected to the outer surface of the winding rod 31, and the four spring plates 391 and the winding rod 31 form a cylindrical shape, a slot 392 is opened in the middle of the spring plate 391, a clamping block 393 is arranged at the interval between the spring plate 391 and the winding rod 31, and two clamping blocks 393 are symmetrically arranged with the slot 392, and the side of the clamping block 393 away from the spring plate 391 is fixedly connected to the outer surface of the winding rod 31, the spring plate 391 is pressed, the spring plate 391 is deformed, the slot 392 is opened, and the spring plate 391 squeezes the clamping block 393, and the two clamping blocks 393 move away from each other. Then, the positive electrode, diaphragm, negative electrode, and diaphragm are inserted into the four slots 392 in sequence, the clamping block 393 fixes the material, and then the winding rod 31 is driven to rotate, and the material is wound around the surface of the winding rod 31. The material is wound around the surface of the winding rod 31, and the spring plate 391 is squeezed, so that the clamping block 393 loosens the material. At this time, the winding of the material is relatively loose, and the material and the winding rod 31 rotate slightly relative to each other, and the material leaves the slot 392. As the material is continuously wound, the material is finally tightly wound around the surface of the winding rod 31. The squeezing during winding is used to loosen the material by the clamping block 393, and a small self-rotation occurs, thereby fixing and automatically loosening the material, making it convenient to remove the wound material from the surface of the winding rod 31.

[0051] The winding transmission assembly 33 includes a winding motor 331, which is fixedly connected to the side of the plate body 1 close to the connecting plate 2, and the side of the winding motor 331 away from the plate body 1 is fixedly connected to a winding shaft 332, and the winding shaft 332 is fixedly connected to the output end of the winding motor 331, and the end of the winding shaft 332 away from the winding motor 331 is fixedly connected to a main gear 333, and the side of the main gear 333 away from the winding shaft 332 is rotatably connected to the inner wall of the shell 5, and the ends of the two winding rods 31 close to the cylinder 32 penetrate the ring plate 34 and extend to the cylinder The inside of the cylinder 32, and one end of the two winding rods 31 located inside the cylinder 32 are fixedly connected with a driven gear 334, and the main gear 333 is only meshed with the driven gear 334 close to the unwinding mechanism 4, and the winding motor 331 is started, and the output end of the winding motor 331 drives the winding shaft 332 to rotate, and the winding shaft 332 rotates, driving the main gear 333 to rotate, and only drives one driven gear 334 to rotate, and drives the winding rod 31 connected thereto to rotate, and the material is wound, and the other winding rod 31 does not rotate, so that it is convenient to remove the wound lithium battery.

[0052] A sub-gear 336 is provided at the interval between the winding motor 331 and the main gear 333, and the sub-gear 336 is provided with some gear teeth. The inner wall of the sub-gear 336 is fixedly connected to the outer surface of the winding shaft 332, and the sub-gear 336 is arranged inside the cylinder 32. An eccentric gear ring 335 is provided on the outer side of the sub-gear 336, and the center of the eccentric gear ring 335 does not coincide with the center of the sub-gear 336. The outer surface of the eccentric gear ring 335 is rotatably connected to the inner wall of the cylinder 32, and the eccentric gear ring 335 is meshed with the sub-gear 336. A connecting column 337 is provided at the interval between the driven gear 334 and the eccentric gear ring 335, and the two ends of the connecting column 337 are respectively fixedly connected to the side of the driven gear 334 and the eccentric gear ring 335 close to each other. The winding shaft 332 rotates, driving the sub-gear 336 to rotate. The eccentric toothed ring 336 is eccentrically arranged with the eccentric toothed ring 335, and the sub-gear 336 is only provided with some gear teeth, so that the sub-gear 336 rotates one circle and intermittently drives the eccentric toothed ring 335 to rotate half a circle, which can prevent the eccentric toothed ring 335 from rotating all the time, thereby preventing the winding rod 31 from rotating around the column 38 during winding and causing premature cutting. The driven gear 334 rotates several circles to complete the winding. At the same time, the eccentric toothed ring 335 rotates, driving the connecting column 337 to rotate, driving the driven gear 334 to rotate around the column 38, and the other driven gear 334 meshes with the main gear 333 to complete the replacement of the winding rod 31. The driven gear 334 meshing with the main gear 333 rotates a determined number of circles, and the other driven gear 334 does not rotate, so that the other driven gear 334 can mesh after moving to the main gear 333, thereby avoiding damage caused by their collision with each other.

[0053] Example 2, please refer to Figure 7-Figure 9The unwinding mechanism 4 includes an unwinding column 41, one end of the unwinding column 41 close to the plate body 1 is fixedly connected to a fixed circular plate 43, a limiting groove 47 is provided on the outer surface of the unwinding column 41, and the unwinding column 41 is limited and slidable with a movable circular plate 44 through the limiting groove 47, and a sliding rod 45 is slidably connected to the inner wall of the movable circular plate 44, and the sliding rod 45 is set in a crescent shape, and the end of the sliding rod 45 away from the movable circular plate 44 is fixedly connected to the outer surface of the fixed circular plate 43, and a plurality of sliding rods 45 are arranged along the circumference of the movable circular plate 44, and the number of unwinding columns 41 is set to four, and the ends of the four unwinding columns 41 close to the plate body 1 are fixedly connected to the unwinding transmission assembly 42, and the positive electrode, the diaphragm, the negative electrode, and the diaphragm are wound on the surface of the four unwinding columns 41 in sequence, and the unwinding transmission assembly Component 42 drives the four unwinding columns 41 to rotate, thereby completing the winding of the positive electrode, diaphragm, negative electrode, and diaphragm. The unwinding transmission component 42 drives the winding with electric energy, which can improve the winding efficiency and save the time of installing materials, thereby improving the processing efficiency. The movable circular plate 44 can slide on the surface of the unwinding column 41, thereby adjusting the interval between the fixed circular plate 43 and the movable circular plate 44, so that materials of different widths can be placed, and avoid the deviation of materials during unwinding, avoid the leakage of the electrode sheet from the diaphragm, thereby avoid affecting the processing quality of the lithium battery, and the setting of multiple slide bars 45 can limit the movable circular plate 44 to avoid the movable circular plate 44 from loosening due to the friction of the material on the movable circular plate 44 during winding, and the crescent-shaped slide bar 45 can prevent the slide bar 45 from loosening.

[0054] A threaded groove 48 is provided on the outer surface of the unwinding column 41, and a limiting circular plate 46 is provided on the side of the movable circular plate 44 away from the fixed circular plate 43, and the limiting circular plate 46 is threadedly connected to the unwinding column 41 through the threaded groove 48. The limiting circular plate 46 is rotated. Since the limiting circular plate 46 is threadedly connected to the unwinding column 41 through the threaded groove 48, the limiting circular plate 46 moves, driving the movable circular plate 44 to move, thereby completing the width adjustment to adapt to the winding of lithium batteries of different sizes, and the threaded connection is very firm, which can prevent the movable circular plate 44 from loosening due to rotation, thereby further preventing the material from being offset during unwinding and improving the processing quality of the lithium battery.

[0055] The unwinding transmission assembly 42 includes an unwinding motor 421, the outer surface of the unwinding motor 421 is fixedly connected to the inner wall of the shell 5, an unwinding shaft 422 is provided at the interval between the unwinding motor 421 and the unwinding column 41, and the unwinding shaft 422 is fixedly connected to the output end of the unwinding motor 421, and the end of the unwinding shaft 422 away from the unwinding motor 421 is fixedly connected to the end of the unwinding column 41 close to the shell 5. After the positive electrode, diaphragm, negative electrode and diaphragm are used up, new material is wound onto the surface of the sliding rod 45, and then the unwinding motor 421 is started, and the output end of the unwinding motor 421 drives the unwinding shaft 422 to rotate, and drives the unwinding column 41 to rotate, so that the new material is wound onto the surface of several sliding rods 45, so as to carry out the next lithium battery winding.

[0056] A synchronous rotating shaft 425 is also provided at the interval between the shell 5 and the unwinding column 41, and the number of the synchronous rotating shafts 425 is set to three. The synchronous rotating shafts 425 are respectively fixedly connected to the ends of the remaining three unwinding columns 41 close to the shell 5, and the ends of the three synchronous rotating shafts 425 away from the unwinding column 41 are rotatably connected to the inner wall of the shell 5, and the outer surfaces of the unwinding rotating shaft 422 and the three synchronous rotating shafts 425 are fixedly connected with a clamping ring 423, and the outer surfaces of the four clamping rings 423 are sleeved with a conveyor belt 424, and the conveyor belt 424 is connected to the four clamping rings. The rings 423 are all transmission connections, and the unwinding shaft 422 rotates, driving the clamping ring 423 fixed thereto to rotate, thereby driving the conveyor belt 424 to drive, driving the remaining three clamping rings 423 to rotate synchronously, driving the three synchronous shafts 425 fixed thereto to rotate synchronously, thereby driving the four unwinding columns 41 to rotate synchronously, so that when the positive electrode, diaphragm, negative electrode, and diaphragm are rewound, the winding lengths of the four are made the same, so that the wound lithium battery can use up four materials at the same time, avoiding too much or too little single material, and avoiding material waste.

[0057] When in use, the spring plate 391 is pressed, the spring plate 391 is deformed, the slot 392 is opened, and the spring plate 391 squeezes the clamping block 393, the two clamping blocks 393 move away from each other, and then the positive electrode, diaphragm, negative electrode, and diaphragm are inserted into the four slots 392 in sequence, the clamping block 393 fixes the material, and the winding motor 331 is started. The output end of the winding motor 331 drives the winding shaft 332 to rotate. The winding shaft 332 rotates, driving the main gear 333 to rotate, and only drives one driven gear 334 to rotate, driving the winding rod 31 connected thereto to rotate, and the material is wound. The other winding rod 31 does not rotate, and is used to remove the wound lithium battery. The winding shaft 332 rotates, driving the sub-gear 336 to rotate. Since the sub-gear 336 and the eccentric gear ring 335 are eccentrically arranged, and the sub-gear 336 is only provided with partial gear teeth, the sub-gear 336 rotates one circle, intermittently driving the eccentric gear ring 335 to rotate. In half a cycle, the driven gear 334 rotates several cycles to complete the winding. At the same time, the eccentric gear ring 335 rotates, driving the connecting column 337 to rotate, driving the driven gear 334 to rotate around the column 38, and the other driven gear 334 engages with the main gear 333 to complete the replacement of the winding rod 31. After the positive electrode, diaphragm, negative electrode and diaphragm are used up, the new material is wound onto the surface of the slide bar 45, and then the unwinding motor 421 is started. The output end of the unwinding motor 421 drives the unwinding shaft 422 to rotate, drives the unwinding column 41 to rotate, and the unwinding shaft 422 rotates, drives the retaining ring 423 fixed thereto to rotate, thereby driving the conveyor belt 424 to transmit, drives the remaining three retaining rings 423 to rotate synchronously, drives the three synchronous shafts 425 fixed thereto to rotate synchronously, thereby drives the four unwinding columns 41 to rotate synchronously, thereby winding the new material onto the surfaces of several slide bars 45, and then the next lithium battery winding is carried out.

[0058] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An intelligent winding device for lithium iron phosphate battery production, characterized in that: include: A plate body (1), and a connecting plate (2) arranged on a side of the plate body (1); A winding mechanism (3), the winding mechanism (3) having a winding structure, and used for winding the positive electrode, the separator, the negative electrode, and the separator in sequence; An unwinding mechanism (4), the unwinding mechanism (4) having four unwinding structures for respectively unwinding the positive electrode, the separator, the negative electrode, and the separator, and a shell (5) arranged on a side of the unwinding mechanism (4) close to the plate body (1); The side surface of the plate body (1) is fixedly connected to the end of the connecting plate (2), the side of the connecting plate (2) away from the plate body (1) is fixedly connected to the outer surface of the winding mechanism (3), the outer surface of the outer shell (5) is fixedly connected to the side of the plate body (1) close to the connecting plate (2), and the inner wall of the outer shell (5) is fixedly connected to the outer surface of the unwinding mechanism (4); Wherein, the winding mechanism (3) comprises: A winding rod (31), the outside of which is provided with a clamping assembly (39), and a ring plate (34) arranged at the end of the winding rod (31); A cylinder (32), wherein a winding transmission assembly (33) is arranged inside the cylinder (32); Two winding rods (31) are symmetrically arranged inside the ring plate (34), and the outer surfaces of the two winding rods (31) are rotatably connected to the inner wall of the ring plate (34), and the outer surface of the ring plate (34) is rotatably connected to the inner wall of the cylinder (32), the outer surface of the cylinder (32) is fixedly connected to the side of the connecting plate (2) away from the plate body (1), the end of the winding transmission assembly (33) is fixedly connected to the side of the plate body (1) close to the connecting plate (2), and the winding transmission assembly (33) and the two winding rods (31) are both in transmission connection, and the outer surface of the clamping assembly (39) is fixedly connected to the outer surface of the winding rod (31); The winding transmission assembly (33) comprises a winding motor (331), the winding motor (331) being fixedly connected to a side of the plate body (1) close to the connecting plate (2), the winding motor (331) being fixedly connected to a winding shaft (332) on a side away from the plate body (1), and the winding shaft (332) being fixedly connected to an output end of the winding motor (331), and the end of the winding shaft (332) away from the winding motor (331) being fixedly connected to a main gear (333 ), and the side of the main gear (333) away from the winding shaft (332) is rotatably connected to the inner wall of the housing (5), the ends of the two winding rods (31) close to the cylinder (32) penetrate the ring plate (34) and extend into the interior of the cylinder (32), and the ends of the two winding rods (31) located inside the cylinder (32) are fixedly connected to the driven gear (334), and the main gear (333) is only meshedly connected to the driven gear (334) close to the unwinding mechanism (4); A sub-gear (336) is provided at the interval between the winding motor (331) and the main gear (333), and the sub-gear (336) is provided with a part of gear teeth, the inner wall of the sub-gear (336) is fixedly connected to the outer surface of the winding shaft (332), and the sub-gear (336) is arranged inside the cylinder (32), and an eccentric toothed ring (335) is provided on the outer side of the sub-gear (336), and the center of the eccentric toothed ring (335) is aligned with the sub-gear (336). The centers of the gears (336) do not overlap, the outer surface of the eccentric toothed ring (335) is rotatably connected to the inner wall of the cylinder (32), and the eccentric toothed ring (335) is meshingly connected to the sub-gear (336), a connecting column (337) is provided at the interval between the driven gear (334) and the eccentric toothed ring (335), and both ends of the connecting column (337) are respectively fixedly connected to the side of the driven gear (334) and the eccentric toothed ring (335) that are close to each other.

2. The intelligent winding device for lithium iron phosphate battery production according to claim 1, characterized in that: The inner wall of the ring plate (34) is fixedly connected to a column (38), and cutting knives (310) are symmetrically arranged at the interval between the two winding rods (31), and the two cutting knives (310) are both arranged in an arc shape, and the sides of the two cutting knives (310) that are close to each other are fixedly connected to the outer surface of the column (38), and the sides of the two cutting knives (310) that are away from each other are arranged in a sawtooth shape.

3. The intelligent winding device for lithium iron phosphate battery production according to claim 2, characterized in that: A rotating seat (35) is symmetrically arranged at the interval between the two winding rods (31); the two rotating seats (35) are both arranged at the interval between the winding rod (31) and the cutting knife (310); the rotating seats (35) are fixedly connected to the outer surface of the column (38); the inner walls of the two rotating seats (35) are rotatably connected to an arc plate (36) via a rotating rod; a side of the arc plate (36) away from the winding rod (31) is fixedly connected to an elastic rod (37); one end of the elastic rod (37) away from the arc plate (36) is fixedly connected to the outer surface of the column (38); and a plurality of the elastic rods (37) are evenly arranged.

4. The intelligent winding device for lithium iron phosphate battery production according to claim 3, characterized in that: The clamping assembly (39) comprises a spring plate (391), and four spring plates (391) are arranged along the circumference of the winding rod (31); the spring plate (391) is fixedly connected to the outer surface of the winding rod (31), and the four spring plates (391) and the winding rod (31) form a cylindrical shape; a slot (392) is provided in the middle of the spring plate (391); a clamping block (393) is provided at the interval between the spring plate (391) and the winding rod (31), and two clamping blocks (393) are arranged symmetrically with respect to the slot (392); and the side of the clamping block (393) away from the spring plate (391) is fixedly connected to the outer surface of the winding rod (31).

5. The intelligent winding device for lithium iron phosphate battery production according to claim 4, characterized in that: The unwinding mechanism (4) comprises an unwinding column (41), one end of the unwinding column (41) close to the plate body (1) is fixedly connected to a fixed circular plate (43), a limiting groove (47) is provided on the outer surface of the unwinding column (41), the unwinding column (41) is limitedly slidable with a movable circular plate (44) through the limiting groove (47), the inner wall of the movable circular plate (44) is slidably connected to a sliding rod (45), and the sliding rod (45) is arranged in a crescent shape, one end of the sliding rod (45) away from the movable circular plate (44) is fixedly connected to the outer surface of the fixed circular plate (43), and a plurality of sliding rods (45) are arranged along the circumference of the movable circular plate (44), the number of the unwinding columns (41) is arranged to be four, and one end of the four unwinding columns (41) close to the plate body (1) is fixedly connected to an unwinding transmission assembly (42).

6. The intelligent winding device for lithium iron phosphate battery production according to claim 5, characterized in that: The outer surface of the unwinding column (41) is provided with a thread groove (48), a limiting circular plate (46) is provided on a side of the movable circular plate (44) away from the fixed circular plate (43), and the limiting circular plate (46) is threadedly connected to the unwinding column (41) via the thread groove (48).

7. The intelligent winding device for lithium iron phosphate battery production according to claim 6, characterized in that: The unwinding transmission assembly (42) comprises an unwinding motor (421), the outer surface of the unwinding motor (421) is fixedly connected to the inner wall of the housing (5), an unwinding shaft (422) is provided at a distance between the unwinding motor (421) and the unwinding column (41), and the unwinding shaft (422) is fixedly connected to the output end of the unwinding motor (421), and an end of the unwinding shaft (422) away from the unwinding motor (421) is fixedly connected to an end of the unwinding column (41) close to the housing (5).

8. The intelligent winding device for lithium iron phosphate battery production according to claim 7, characterized in that: A synchronous rotating shaft (425) is also provided at the interval between the outer shell (5) and the unwinding column (41), and the number of the synchronous rotating shafts (425) is three. The synchronous rotating shafts (425) are respectively fixedly connected to one end of the remaining three unwinding columns (41) close to the outer shell (5), and one end of the three synchronous rotating shafts (425) away from the unwinding column (41) is rotatably connected to the inner wall of the outer shell (5). The outer surfaces of the unwinding rotating shaft (422) and the three synchronous rotating shafts (425) are fixedly connected with a retaining ring (423), and the outer surfaces of the four retaining rings (423) are sleeved with a conveyor belt (424), and the conveyor belt (424) and the four retaining rings (423) are all in transmission connection.

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