A winding machine with an anti-winding structure

Abstract

The application discloses a winding machine with an anti-winding structure and relates to the technical field of winding. The base surface is fixedly installed with a diaphragm roll, an L-shaped support, a square plate, and a film cutting plate. When the winding motor rotates too fast, the centrifugal force drives the connecting rope to rotate upward, the upward rotation of the connecting rope drives the sliding block to rotate upward, and the upward rotation of the sliding block drives the disc to slide upward. The winding motor is fixedly installed at the top of the L-shaped support, and the winding disc is fixedly installed at the output end of the winding motor. The winding motor is prevented from rotating too fast, the tension of the diaphragm caused by the pulling is prevented from being too large, the diaphragm is prevented from being torn or wound together, and the efficiency of winding lithium batteries by the machine is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the winding technology field, and in particular to a winding machine with an anti-winding structure. BACKGROUND

[0002] Current lithium batteries need to be wound, and the electrode sheets and the separators are alternately stacked and wound together to form the electrode group of the battery, which is the core part of the battery, wherein the positive electrode, the negative electrode and the separator need to be wound together correctly to ensure the performance and safety of the battery.

[0003] The patent with the patent announcement number CN212991149U relates to a lithium battery winding machine, which comprises a machine body, a raw material inlet is movably installed on the outer surface of the machine body, a raw material outlet is movably installed on the outer surface of the raw material inlet, a hanging baffle is movably installed on the outer surface of the machine body on one side of the raw material outlet, a raw material conveying belt is movably installed at the bottom of the hanging baffle, a semi-finished product outlet is movably installed on the outer surface of the raw material conveying belt, and a winding rod is movably installed on the top of the semi-finished product outlet and the outer surface of the machine body; the lithium battery winding machine realizes full-automatic management and production by increasing the control system, solves the problems of high labor cost, low production precision, poor adhesion of the isolation paper and the coating layer, and easy leakage, improves the production efficiency and production precision, reduces the labor cost, and increases the production capacity and production efficiency.

[0004] In the above-mentioned patent, the control system is increased to realize full-automatic management and production, solve the problems of high labor cost, low production precision, poor adhesion of the isolation paper and the coating layer, and easy leakage, improve the production efficiency and production precision, reduce the labor cost, and increase the production capacity and production efficiency, but in the winding process, it may be difficult to control the speed of the electric rotation, and the electric rotation may be too fast to cause the tension of the electric pulling of the separator to be too large, which may cause the separator to be torn or the separators to be wound together, which may affect the efficiency of the machine winding the lithium battery, and the winding failure may cause the positive and negative electrodes of the lithium battery to be bonded together, which may cause the lithium battery to leak and cause safety hazards. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a winding machine with an anti-winding structure to solve the problems raised in the background art.

[0006] To achieve the above object, the present application is implemented by the following technical solutions: A winding machine with an anti-winding structure, comprising a base, further comprising an anti-winding device and a cutting device, the surface of the base is fixedly installed with a diaphragm roll, the surface of the base is fixedly installed with an L-shaped support, the surface of the base is fixedly installed with a square plate, the surface of the base is fixedly installed with a film cutting plate, wherein the anti-winding device comprises a winding motor, a winding disc, a connecting rope, a sliding block, a disc, a trapezoidal block, a connecting frame and a rotating rod, the diaphragm roll is wound by the rotation of the winding motor, when the winding motor rotates too fast, the connecting rope is driven to rotate upward by centrifugal force, the connecting rope rotating upward drives the sliding block to rotate upward, the sliding block rotating upward drives the disc to slide upward, the disc sliding upward drives the trapezoidal block to move away from the winding motor, the winding motor is fixedly installed at the top of the L-shaped support, the winding disc is fixedly installed at the output end of the winding motor, the disc is slidingly installed at the output end of the winding motor, the sliding block is slidingly installed on the surface of the disc, one end of the connecting rope is hinged to the output end of the winding motor, the other end of the connecting rope is hinged to the top of the sliding block, the trapezoidal block is slidingly installed on the surface of the L-shaped support, the connecting frame is fixedly installed on the surface of the L-shaped support, the rotating rod is rotatably installed on the surface of the connecting frame, preventing the winding motor from rotating too fast, which may cause the tension of the diaphragm to be too large, causing the diaphragm to be torn or the diaphragm to be wound together, which may affect the efficiency of the machine winding lithium batteries.

[0007] According to the above technical solutions, a first spring is arranged between the disc and the winding motor, a second spring is arranged between the trapezoidal block and the L-shaped support, a first torsional spring is arranged between the rotating rod and the connecting frame, and a rubber block is arranged on the surface of the rotating rod. The disc is reset by the first spring, preventing the disc from continuously pushing the trapezoidal block to move, the rotating rod is reset by the first torsional spring, preventing the rotating rod from continuously contacting the winding disc, and the winding disc is speed-limited by the rubber block, preventing the winding motor from rotating too fast.

[0008] According to the above technical scheme, the cutting device comprises an electric push rod, a cutting knife, a connecting block, an elastic telescopic rod, a fixed plate, a short plate, a control switch and a push plate. The electric push rod drives the cutting knife to move towards the direction of the film cutting plate. At the same time, the electric push rod drives the connecting block to move towards the direction of the film cutting plate. The movement of the connecting block towards the direction of the film cutting plate drives the elastic telescopic rod to move towards the direction of the film cutting plate, preventing direct cutting from causing irregular cuts, which may cause the diaphragm to not completely isolate the positive and negative poles of the lithium battery during subsequent winding of the lithium battery, possibly causing electric leakage and safety hazards. The electric push rod is fixedly installed on the surface of the square plate. The cutting knife is fixedly installed on the output end of the electric push rod. The connecting block is fixedly installed on the output end of the electric push rod. The elastic telescopic rod is fixedly installed on the surface of the connecting block. The fixed plate is fixedly installed on the free end of the elastic telescopic rod. The short plate is fixedly installed on the surface of the square plate. The control switch is fixedly installed on the top of the short plate. The push plate is fixedly installed on the output end of the electric push rod. The movement of the electric push rod towards the direction of the film cutting plate drives the push plate to move towards the direction of the film cutting plate. The movement of the push plate towards the direction of the film cutting plate contacts the control end of the control switch. The winding motor is turned off by contacting the control end, preventing the winding motor from continuously rotating, which may cause the diaphragm to be pulled and damaged, affecting subsequent winding.

[0009] According to the above technical scheme, the surface of the film cutting plate is provided with a groove, and the control switch and the winding motor are electrically connected. The groove makes the cutting knife cut more neatly. The electrical connection between the control switch and the winding motor prevents the winding motor from continuously winding during cutting, affecting the cutting.

[0010] According to the above technical scheme, the anti-misplacement device comprises an inclined surface block, a sliding plate, a circular rod, a trapezoidal sliding plate, a circular short rod, an elastic expansion block, an inclined plate, a fixed block, a long plate and a triangular block. The fixed plate moves towards the direction close to the film cutting plate, driving the inclined surface block to move towards the direction close to the film cutting plate. The inclined surface block contacts the circular rod when moving towards the direction close to the film cutting plate, and pushes the circular rod to move downwards, preventing the diaphragm from being folded under its own gravity after cutting, which may cause the wound lithium battery to fail to insulate the positive and negative electrodes, and may cause a safety hazard due to electric leakage. The inclined surface block is fixedly installed on the top of the fixed plate. The sliding plate is slidingly installed on the surface of the film cutting plate. The inner wall of the sliding plate is provided with a semicircular block. The circular rod is fixedly installed on the surface of the sliding plate. The trapezoidal sliding plate is slidingly installed on the surface of the film cutting plate. The circular short rod is fixedly installed on the top of the sliding plate. The elastic expansion block is slidingly installed on the top of the film cutting plate. The inclined plate is fixedly installed on the free end of the elastic expansion block. The fixed block is fixedly installed on the top of the winding disc. The long plate is fixedly installed on the surface of the elastic expansion block. The triangular block is fixedly installed on the surface of the trapezoidal sliding plate. The rotation of the winding disc drives the fixed block to rotate. The rotation of the fixed block contacts the free end of the elastic expansion block. The fixed block pushes the elastic expansion block to move away from the winding disc. The movement of the elastic expansion block away from the winding disc drives the long plate to move away from the winding disc, preventing the diaphragm from overlapping and affecting the insulation effect.

[0011] According to the above technical scheme, the sliding plate and the film cutting plate are provided with a third spring, the trapezoidal sliding plate and the film cutting plate are provided with a fourth spring, and the elastic expansion block and the film cutting plate are provided with a fifth spring. The third spring drives the sliding plate to reset. The diaphragm is pulled upwards during the resetting process, which can improve the winding effect. The fourth spring can limit the sliding plate through the trapezoidal sliding plate, preventing the sliding plate from resetting through the third spring before the winding motor is started, which affects the winding effect.

[0012] According to the technical scheme, the anti-bubble device comprises an elastic telescopic connecting rod, a U-shaped support, a rotating shaft, a rotating wheel and an elastic plate, the elastic force of the elastic telescopic connecting rod drives the U-shaped support to move towards the lithium battery, the movement of the U-shaped support towards the lithium battery drives the rotating shaft to move towards the lithium battery, and the movement of the rotating shaft towards the lithium battery drives the rotating wheel to move towards the lithium battery, so that the lithium battery is wound more tightly, the effective contact between the positive electrode, the negative electrode and the separator is ensured, the gap in the battery is reduced, the elastic telescopic connecting rod is fixedly installed on the surface of the base, the U-shaped support is fixedly installed on the free end of the elastic telescopic connecting rod, the rotating shaft is fixedly installed on the surface of the U-shaped support, the rotating wheel is rotatably sleeved on the surface of the rotating shaft, and the elastic plate is rotatably installed on the surface of the rotating shaft.

[0013] According to the technical scheme, the rotating wheel is attached to the surface of the lithium battery, a No. 2 torsion spring is arranged between the elastic plate and the rotating shaft, the lithium batteries are attached more tightly through the rotating wheel attached to the surface of the lithium battery, and the elastic plate is attached to the lithium battery through the elastic force of the No. 2 torsion spring, so that bubbles are prevented from being generated during winding, and the uneven contact or gap between the positive electrode, the negative electrode and the separator is prevented, which reduces the energy density of the battery.

[0014] The present application provides a winding machine with an anti-winding structure.

[0015] (1) The winding machine with an anti-winding structure winds the lithium battery through the winding motor, when the winding motor rotates at a speed that is too fast, the centrifugal force of the winding motor drives the disc to move upwards, the disc moves upwards to push the rotating rod to slow down the winding disc, so as to prevent the tension of the separator from being too large due to the too fast rotation of the winding motor, so as to prevent the separator from being torn or wound together, which affects the efficiency of the machine in winding the lithium battery, and the failure of winding may cause the positive and negative electrodes of the lithium battery to be attached together, which may cause the lithium battery to leak and cause safety hazards.

[0016] (2) The winding machine with an anti-winding structure cuts the separator through the electric push rod pushing the cutting knife, and fixes the separator through the fixed plate at the same time, so as to prevent the cut of the separator from being irregular after cutting, which may cause the separator to fail to completely isolate the positive and negative electrodes of the lithium battery during subsequent winding of the lithium battery, which may cause leakage and safety hazards, and when the electric push rod starts to move, the push plate contacts the control switch to turn off the winding motor, so as to prevent the continuous rotation of the winding motor from causing the separator to be damaged by being pulled, which affects subsequent winding.

[0017] (3) The winding machine with anti-winding structure, when the cutting knife is pushed by the electric push rod for cutting, the inclined block pushes the sliding plate to move downward, which limits the diaphragm, prevents the diaphragm from being bent and folded under its own gravity after cutting, which may cause the wound lithium battery to be unable to isolate the positive and negative electrodes, and may cause a safety hazard of electric leakage, and when the winding motor starts to end, the rotation of the winding motor drives the fixed block to contact the limit of the sliding plate, so that the sliding plate drives the diaphragm to move upward, which can make the winding motor wind better, prevent the diaphragm from overlapping together, and affect the isolation effect.

[0018] (4) The winding machine with anti-winding structure, the elastic extension connecting rod itself pushes the rotating wheel to fit the lithium battery, so that the lithium battery is wound more tightly, the tight winding can ensure the effective contact between the positive electrode, the negative electrode and the diaphragm, reduce the gap in the battery, which helps to improve the energy density of the battery, the elastic plate will fit the lithium battery, prevent bubbles from being generated during winding, the bubbles may cause uneven contact or gap between the positive electrode, the negative electrode and the diaphragm, which will reduce the energy density of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic diagram of the present application;

[0020] Figure 2 It is a whole cross-section structure schematic diagram of the present application;

[0021] Figure 3 It is a winding motor position structure schematic diagram of the present application;

[0022] Figure 4 It is a winding motor position structure schematic diagram of the present application; Figure 3 It is an A part structure enlarged schematic diagram in the present application;

[0023] Figure 5 It is a cutting knife and film cutting plate position structure schematic diagram of the present application;

[0024] Figure 6 It is a winding motor position structure schematic diagram of the present application; Figure 5 It is a B part structure enlarged schematic diagram in the present application;

[0025] Figure 7 It is a winding motor position structure schematic diagram of the present application; Figure 3 It is a C part structure enlarged schematic diagram in the present application;

[0026] Figure 8 It is an elastic extension connecting rod and U-shaped support structure schematic diagram of the present application.

[0027] In the figure: 1, base; 2, diaphragm roll; 3, L-shaped support; 4, square plate; 5, film cutting plate; 61, winding motor; 62, winding disc; 63, connecting rope; 64, sliding block; 65, disc; 66, trapezoidal block; 67, connecting frame; 68, rotating rod; 71, electric push rod; 72, cutting knife; 73, connecting block; 74, elastic telescopic rod; 75, fixed plate; 76, short plate; 77, control switch; 78, push plate; 81, inclined block; 82, sliding plate; 83, round rod; 84, trapezoidal sliding plate; 85, round short rod; 86, elastic telescopic block; 87, inclined plate; 88, fixed block; 89, long plate; 810, triangular block; 91, elastic telescopic connecting rod; 92, U-shaped support; 93, rotating shaft; 94, rotating wheel; 95, elastic plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0029] Please refer to Figures 1-6One embodiment of the application is: a winding machine with anti-winding structure, comprising a base 1, also comprising an anti-winding device and a cutting device, the surface of the base 1 is fixedly installed with a diaphragm roll 2, the surface of the base 1 is fixedly installed with an L-shaped support 3, the surface of the base 1 is fixedly installed with a square plate 4, and the surface of the base 1 is fixedly installed with a film cutting plate 5; wherein the anti-winding device comprises a winding motor 61, a winding disc 62, a connecting rope 63, a sliding block 64, a disc 65, a trapezoidal block 66, a connecting frame 67 and a rotating rod 68, the diaphragm roll 2 is wound by rotating the winding motor 61, when the winding motor 61 rotates too fast, the connecting rope 63 will be driven to rotate upward by centrifugal force, the connecting rope 63 rotating upward drives the sliding block 64 to rotate upward, the sliding block 64 rotating upward drives the disc 65 to slide upward, the disc 65 sliding upward pushes the trapezoidal block 66 to move away from the winding motor 61, the trapezoidal block 66 moving away from the winding motor 61 pushes the rotating rod 68 to rotate towards the winding disc 62, the winding motor 61 is fixedly installed at the top of the L-shaped support 3, the winding disc 62 is fixedly installed at the output end of the winding motor 61, the disc 65 is slidingly installed at the output end of the winding motor 61, the sliding block 64 is slidingly installed on the surface of the disc 65, one end of the connecting rope 63 is hinged to the output end of the winding motor 61, the other end of the connecting rope 63 is hinged to the top of the sliding block 64, the trapezoidal block 66 is slidingly installed on the surface of the L-shaped support 3, the connecting frame 67 is fixedly installed on the surface of the L-shaped support 3, and the rotating rod 68 is rotatably installed on the surface of the connecting frame 67, preventing the winding motor 61 from rotating too fast, which may cause the tension of the diaphragm to be too large, causing the diaphragm to be torn or the diaphragm to be wound together, which will affect the efficiency of the machine winding lithium battery.

[0030] A spring is arranged between the disc 65 and the winding motor 61, a second spring is arranged between the trapezoidal block 66 and the L-shaped support 3, a torsional spring is arranged between the rotating rod 68 and the connecting frame 67, and a rubber block is arranged on the surface of the rotating rod 68, the disc 65 is reset by the first spring, preventing the disc 65 from continuously pushing the trapezoidal block 66 to move, and the rotating rod 68 is reset by the first torsional spring, preventing the rotating rod 68 from continuously contacting the winding disc 62.

[0031] The cutting device comprises an electric push rod 71, a cutting knife 72, a connecting block 73, an elastic telescopic rod 74, a fixed plate 75, a short plate 76, a control switch 77 and a push plate 78. The electric push rod 71 drives the cutting knife 72 to move towards the cutting film plate 5. At the same time, the electric push rod 71 drives the connecting block 73 to move towards the cutting film plate 5. The movement of the connecting block 73 towards the cutting film plate 5 drives the elastic telescopic rod 74 to move towards the cutting film plate 5. The movement of the elastic telescopic rod 74 towards the cutting film plate 5 drives the fixed plate 75 to move towards the cutting film plate 5, preventing the cutting from being irregular and causing the diaphragm to not be completely isolated from the positive and negative poles of the lithium battery, which may cause a safety hazard. The electric push rod 71 is fixedly installed on the surface of the square plate 4. The cutting knife 72 is fixedly installed on the output end of the electric push rod 71. The connecting block 73 is fixedly installed on the output end of the electric push rod 71. The elastic telescopic rod 74 is fixedly installed on the surface of the connecting block 73. The fixed plate 75 is fixedly installed on the free end of the elastic telescopic rod 74. The short plate 76 is fixedly installed on the surface of the square plate 4. The control switch 77 is fixedly installed on the top of the short plate 76. The push plate 78 is fixedly installed on the output end of the electric push rod 71. The movement of the electric push rod 71 towards the cutting film plate 5 drives the push plate 78 to move towards the cutting film plate 5. The movement of the push plate 78 towards the cutting film plate 5 contacts the control end of the control switch 77, which turns off the winding motor 61 by contacting the control end, preventing the winding motor 61 from continuously rotating and causing the diaphragm to be damaged, which affects the subsequent winding.

[0032] The surface of the cutting film plate 5 is provided with a groove. The control switch 77 and the winding motor 61 are electrically connected. The groove makes the cutting of the cutting knife 72 more regular. The electrical connection between the control switch 77 and the winding motor 61 prevents the winding motor 61 from continuously winding during the cutting process, which affects the cutting.

[0033] When the winding motor 61 rotates to drive the diaphragm roll 2 to wind, the centrifugal force drives the connecting rope 63 to rotate upwards when the winding motor 61 rotates too fast. The upward rotation of the connecting rope 63 drives the sliding block 64 to rotate upwards. The upward rotation of the sliding block 64 drives the disc 65 to slide upwards. The upward sliding of the disc 65 drives the trapezoidal block 66 to move away from the winding motor 61. The movement of the trapezoidal block 66 away from the winding motor 61 drives the rotating rod 68 to rotate towards the winding disc 62. The rubber block on the surface of the rotating rod 68 contacts the winding disc 62, which slows down the winding disc 62, preventing the winding motor 61 from rotating too fast, which may cause the tension of the diaphragm to be too large, causing the diaphragm to be torn or the diaphragm to be wound together, which affects the efficiency of the machine winding the lithium battery.

[0034] When the cutting knife 72 is driven by the electric push rod 71 to move towards the cutting film plate 5, the connecting block 73 will also move towards the cutting film plate 5, and the elastic telescopic rod 74 will move towards the cutting film plate 5, and the fixed plate 75 will move towards the cutting film plate 5 to fix the diaphragm, preventing direct cutting from causing uneven cuts, which may cause the diaphragm to not completely isolate the positive and negative poles of the lithium battery during subsequent winding, which may cause a short circuit, causing a safety hazard. At the same time, when the electric push rod 71 moves towards the cutting film plate 5, the push plate 78 will also move towards the cutting film plate 5, and will contact the control end of the control switch 77, which will turn off the winding motor 61 by contacting the control end, preventing the winding motor 61 from continuously rotating, which may cause the diaphragm to be pulled and damaged, affecting subsequent winding.

[0035] Please refer to Figures 1-8On the basis of the above embodiment, another embodiment of the application further comprises a misplacement prevention device and an air bubble prevention device. The misplacement prevention device comprises an inclined block 81, a sliding plate 82, a round rod 83, a trapezoidal sliding plate 84, a round short rod 85, an elastic telescopic block 86, an inclined plate 87, a fixed block 88, a long plate 89, and a triangular block 810. The inclined block 81 is moved towards the cutting film plate 5 by the fixed plate 75, and the inclined block 81 is contacted with the round rod 83, which is pushed downwards by the inclined block 81, and the sliding plate 82 is moved downwards by the round rod 83, thereby limiting the diaphragm and preventing the diaphragm from being folded under its own gravity after cutting, which may cause the wound lithium battery to fail to isolate the positive and negative electrodes, and may cause a safety hazard due to electric leakage. The inclined block 81 is fixedly installed on the top of the fixed plate 75, the sliding plate 82 is slidingly installed on the surface of the cutting film plate 5, the inner wall of the sliding plate 82 is provided with a semicircular block, the round rod 83 is fixedly installed on the surface of the sliding plate 82, the trapezoidal sliding plate 84 is slidingly installed on the surface of the cutting film plate 5, the round short rod 85 is fixedly installed on the top of the sliding plate 82, the elastic telescopic block 86 is slidingly installed on the top of the cutting film plate 5, the inclined plate 87 is fixedly installed on the free end of the elastic telescopic block 86, the fixed block 88 is fixedly installed on the top of the winding disc 62, the long plate 89 is fixedly installed on the surface of the elastic telescopic block 86, and the triangular block 810 is fixedly installed on the surface of the trapezoidal sliding plate 84. The winding disc 62 is rotated to drive the fixed block 88 to rotate, the free end of the elastic telescopic block 86 is contacted, the fixed block 88 is pushed away from the winding disc 62, the long plate 89 is moved away from the winding disc 62, the long plate 89 is contacted with the inclined surface of the triangular block 810, the triangular block 810 is pushed away from the sliding plate 82, and the diaphragm is prevented from overlapping together to affect the isolation effect.

[0036] A third spring is arranged between the sliding plate 82 and the cutting film plate 5, a fourth spring is arranged between the trapezoidal sliding plate 84 and the cutting film plate 5, and a fifth spring is arranged between the elastic telescopic block 86 and the cutting film plate 5. The sliding plate 82 is reset by the third spring, the diaphragm is pulled upwards during the reset process, the winding effect is better, and the sliding plate 82 is limited by the trapezoidal sliding plate 84 by the fourth spring.

[0037] The anti-bubble device comprises an elastic telescopic connecting rod 91, a U-shaped support 92, a rotating shaft 93, a rotating wheel 94 and an elastic plate 95. The elastic telescopic connecting rod 91 drives the U-shaped support 92 to move towards the lithium battery by its own elasticity. The movement of the U-shaped support 92 towards the lithium battery drives the rotating shaft 93 to move towards the lithium battery. The movement of the rotating shaft 93 towards the lithium battery drives the rotating wheel 94 to move towards the lithium battery. The elastic telescopic connecting rod 91 makes the rotating wheel 94 adhere to the lithium battery, so that the lithium battery is wound more tightly. The tight winding can ensure the effective contact between the positive electrode, the negative electrode and the separator, and reduce the gap in the battery. The elastic telescopic connecting rod 91 is fixedly installed on the surface of the base 1. The U-shaped support 92 is fixedly installed on the free end of the elastic telescopic connecting rod 91. The rotating shaft 93 is fixedly installed on the surface of the U-shaped support 92. The rotating wheel 94 is rotatably sleeved on the surface of the rotating shaft 93. The elastic plate 95 is rotatably installed on the surface of the rotating shaft 93. The elastic telescopic connecting rod 91 drives the elastic plate 95 to adhere to the lithium battery by pushing the rotating wheel 94 to adhere to the lithium battery. In the winding process of the lithium battery, the separator adheres tightly to the positive and negative electrodes to prevent bubbles from being generated in the winding process. The bubbles may cause uneven contact or gap between the positive electrode, the negative electrode and the separator, which will reduce the energy density of the battery.

[0038] The rotating wheel 94 adheres to the surface of the lithium battery. A No. 2 torsional spring is arranged between the elastic plate 95 and the rotating shaft 93. The lithium batteries adhere more tightly by the rotating wheel 94 adhering to the surface of the lithium battery. The elastic plate 95 adheres to the lithium battery by the elasticity of the No. 2 torsional spring.

[0039] In operation, the fixed plate 75 moves towards the cutting film plate 5, driving the inclined block 81 to move towards the cutting film plate 5. The inclined block 81 moves towards the cutting film plate 5 and contacts the round rod 83, pushing the round rod 83 to move downwards. The round rod 83 moves downwards, driving the sliding plate 82 to move downwards. The sliding plate 82 moves downwards, limiting the diaphragm, preventing the diaphragm from bending and folding after cutting due to its own gravity, which may cause the wound lithium battery to fail to isolate the positive and negative electrodes, which may cause a safety hazard due to electric leakage. At the same time, the round rod 83 moves downwards and contacts the trapezoidal slide 84, pushing the trapezoidal slide 84 to move away from the sliding plate 82. When the round rod 83 completely passes through the trapezoidal slide 84, the trapezoidal slide 84 is reset by the fourth spring to limit the round rod 83. At the same time, the sliding plate 82 moves downwards, driving the round short rod 85 to move downwards, which releases the free end of the elastic expansion block 86. When the winding motor 61 is started to finish winding, the rotation of the winding motor 61 drives the winding disc 62 to rotate, which drives the fixed block 88 to rotate. The fixed block 88 rotates and contacts the free end of the elastic expansion block 86, pushing the elastic expansion block 86 to move away from the winding disc 62. The elastic expansion block 86 moves away from the winding disc 62, driving the long plate 89 to move away from the winding disc 62. The long plate 89 moves away from the winding disc 62 and contacts the inclined surface of the triangular block 810, pushing the triangular block 810 to move away from the sliding plate 82. The triangular block 810 moves away from the sliding plate 82, driving the trapezoidal slide 84 to move away from the sliding plate 82. The trapezoidal slide 84 releases the limitation of the sliding plate 82, and the sliding plate 82 is reset by the third spring. During the resetting process, the sliding plate 82 drives the diaphragm to move upwards, which can make the winding of the winding motor 61 better, preventing the diaphragm from overlapping and affecting the isolation effect.

[0040] In operation, the elastic expansion link 91 drives the U-shaped bracket 92 to move towards the lithium battery due to its own elasticity. The U-shaped bracket 92 moves towards the lithium battery, driving the rotating shaft 93 to move towards the lithium battery. The rotating shaft 93 moves towards the lithium battery, driving the rotating wheel 94 to move towards the lithium battery. The elastic expansion link 91 makes the rotating wheel 94 adhere to the lithium battery, making the lithium battery wind more tightly. Tightly winding can ensure effective contact between the positive electrode, the negative electrode and the diaphragm, reducing the gap inside the battery. At the same time, the elastic expansion link 91 pushes the rotating wheel 94 to adhere to the lithium battery, driving the elastic plate 95 to adhere to the lithium battery. During the winding process of the lithium battery, the diaphragm tightly adheres to the positive and negative electrodes, preventing air bubbles from being generated during winding. Air bubbles may cause uneven contact or gaps between the positive electrode, the negative electrode and the diaphragm, which will reduce the energy density of the battery.

[0041] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A winding machine with anti-entanglement structure, comprising a base (1), characterized in that: It also includes anti-winding device, cutting device, anti-misplacement device and anti-bubble device, the base (1) surface fixedly installed with diaphragm roll (2), the base (1) surface fixedly installed with L-shaped support (3), the base (1) surface fixedly installed with square plate (4), the base (1) surface fixedly installed with cutting film plate (5); Wherein, anti-winding device includes winding motor (61), winding disc (62), connecting rope (63), sliding block (64), disc (65), trapezoidal block (66), connecting frame (67) and rotating rod (68), the winding motor (61) is fixedly installed on the top of L-shaped support (3), the winding disc (62) is fixedly installed on the output end of winding motor (61), the disc (65) is slidably installed on the output end of winding motor (61), the sliding block (64) is slidably installed on the surface of disc (65), one end of the connecting rope (63) is hinged to the output end of winding motor (61), the other end of the connecting rope (63) is hinged to the top of sliding block (64), the trapezoidal block (66) is slidably installed on the surface of L-shaped support (3), the connecting frame (67) is fixedly installed on the surface of L-shaped support (3), the rotating rod (68) is rotatably installed on the surface of connecting frame (67); The cutting device includes electric push rod (71), cutting knife (72), connecting block (73), elastic telescopic rod (74), fixed plate (75), short plate (76), control switch (77) and push plate (78), the electric push rod (71) is fixedly installed on the surface of square plate (4), the cutting knife (72) is fixedly installed on the output end of electric push rod (71), the connecting block (73) is fixedly installed on the output end of electric push rod (71), the elastic telescopic rod (74) is fixedly installed on the surface of connecting block (73), the fixed plate (75) is fixedly installed on the free end of elastic telescopic rod (74), the short plate (76) is fixedly installed on the surface of square plate (4), the control switch (77) is fixedly installed on the top of short plate (76), the push plate (78) is fixedly installed on the output end of electric push rod (71); The cutting film plate (5) surface is provided with groove, the control switch (77) and winding motor (61) are electrically connected; The anti-positioning device comprises an inclined block (81), a sliding plate (82), a round rod (83), a trapezoidal sliding plate (84), a round short rod (85), an elastic telescopic block (86), an inclined plate (87), a fixed block (88), a long plate (89) and a triangular block (810), the inclined block (81) is fixedly installed at the top of the fixed plate (75), the sliding plate (82) is slidingly installed on the surface of the film cutting plate (5), the inner wall of the sliding plate (82) is provided with a semicircular block, the round rod (83) is fixedly installed on the surface of the sliding plate (82), the trapezoidal sliding plate (84) is slidingly installed on the surface of the film cutting plate (5), the round short rod (85) is fixedly installed at the top of the sliding plate (82), the elastic telescopic block (86) is slidingly installed at the top of the film cutting plate (5), the inclined plate (87) is fixedly installed at the free end of the elastic telescopic block (86), the fixed block (88) is fixedly installed at the top of the winding disc (62), the long plate (89) is fixedly installed on the surface of the elastic telescopic block (86), and the triangular block (810) is fixedly installed on the surface of the trapezoidal sliding plate (84).

2. The winding machine having an anti-winding structure according to claim 1, characterized in that: A first spring is arranged between the disc (65) and the winding motor (61), a second spring is arranged between the trapezoidal block (66) and the L-shaped support (3), a first torsion spring is arranged between the rotating rod (68) and the connecting frame (67), and a rubber block is arranged on the surface of the rotating rod (68).

3. A winding machine with anti-entanglement structure according to claim 2, characterized in that: A third spring is arranged between the sliding plate (82) and the film cutting plate (5), a fourth spring is arranged between the trapezoidal sliding plate (84) and the film cutting plate (5), and a fifth spring is arranged between the elastic telescopic block (86) and the film cutting plate (5).

4. The winding machine having an anti-winding structure according to claim 3, characterized in that: The anti-bubble device comprises an elastic telescopic connecting rod (91), a U-shaped support (92), a rotating shaft (93), a rotating wheel (94) and an elastic plate (95), the elastic telescopic connecting rod (91) is fixedly installed on the surface of the base (1), the U-shaped support (92) is fixedly installed at the free end of the elastic telescopic connecting rod (91), the rotating shaft (93) is fixedly installed on the surface of the U-shaped support (92), the rotating wheel (94) is rotatably sleeved on the surface of the rotating shaft (93), and the elastic plate (95) is rotatably installed on the surface of the rotating shaft (93).

5. A winding machine with anti-entanglement structure according to claim 4, characterized in that: The rotating wheel (94) is attached to the surface of the lithium battery, and a second torsion spring is arranged between the elastic plate (95) and the rotating shaft (93).

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