Polymer lithium battery cell winding equipment

Abstract

The invention belongs to the technical field of lithium battery production equipment, and particularly relates to polymer lithium battery cell winding equipment which comprises a mounting plate, a winding plate, a feeding rail and an unwinding shaft and further comprises a static dust removal assembly, the static dust removal assembly is mounted on the mounting plate and used for conducting negative pressure dust removal on moving pole pieces and diaphragms, and the winding plate is mounted on the winding plate. The pre-bending assembly is mounted on the static dust removal assembly, and the pre-bending assembly is used for carrying out pre-bending on the pole piece; and the movable dust removal assembly is installed on the static dust removal assembly, and the movable dust removal assembly is used for conducting negative-pressure dust removal on the bent positions, located at the two ends of the winding plate, of the pole piece in a close range, and through the arrangement of the static dust removal assembly, the pre-bending assembly and the movable dust removal assembly, dust on the pole piece is removed and collected; the dust content in the wound battery cell is reduced, and the performance of the wound battery cell is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium battery production equipment, in particular to a polymer lithium battery cell winding device. Background Art

[0002] Polymer lithium battery is one of the lithium-ion batteries. The new generation of polymer lithium-ion batteries can be thin, of any area and any shape, which greatly improves the flexibility of battery design. Therefore, it can be made into batteries of any shape and capacity according to product requirements, providing equipment developers with some design flexibility and adaptability in power solutions to maximize the optimization of their product performance. At the same time, the unit energy of polymer lithium-ion batteries is 20% higher than that of current general lithium-ion batteries, and its capacity and environmental performance are better than lithium-ion batteries.

[0003] In the winding process of polymer lithium batteries, the pole ear is usually first welded to the current collector by ultrasonic welding, and then the positive and negative pole pieces and the separator are arranged in the order of positive electrode-separator-negative electrode-separator, and then wound and assembled into cylindrical or square cells. In industrial production, the general manufacturing process of lithium battery pole pieces is: active materials, binders and conductive agents are mixed to prepare slurry, and then coated on both sides of the current collector, and the pole piece is formed after drying and removing the solvent. The coating of the pole piece particles is compacted and densified, and then cut or divided into strips. The electrode will then be sent to the winding process for winding. During the winding process, the electrode will be deformed. During the deformation process, the coating on the electrode particles may fall off, and the dust is distributed inside the winding core. The presence of dust will have a great impact on the service life and performance of the wound battery cell. At the same time, since lithium-ion batteries will also generate dust and powder in multiple steps during the production process, the dust will be dispersed in the air and enter between the diaphragm and the electrode during the winding process, which will have a great impact on the produced lithium batteries.

[0004] In order to reduce dust pollution during the winding process in the related technology, most of them will perform dust removal operations on the winding space, and at the same time improve the electrode manufacturing process, thereby reducing the probability of dust in the air falling on the electrode and the probability of powder falling when the electrode is bent, thereby reducing the impact of dust in the wound battery cell. However, on the one hand, during the semi-automatic loading process, when the staff loads the electrode, the dust removal effect of the range dust removal equipment is relatively scattered, resulting in the dust removal effect on the electrode being less than ideal. On the other hand, during the winding process, the gap between the electrode sheets is small, resulting in the dust falling when the electrode sheet is deformed not being easily collected by external dust removal equipment, resulting in a certain amount of dust inside the polymer lithium battery cell when it is wound, which has a certain degree of impact on the performance of the polymer battery.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to those skilled in the art.

[0006] In view of this, the present invention proposes a polymer lithium battery cell winding device to solve the above technical problems. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a polymer lithium battery cell winding device.

[0008] The technical solution adopted by the present invention to solve its technical problem is: the present invention uses a pre-bending component to bend and deform the pole piece with an amplitude smaller than the winding angle, thereby separating the particles and dust with a lower degree of fixation on the pole piece in advance, and in the subsequent movement process, the separated particles and dust are extracted by negative pressure through the static dust removal component, thereby reducing the probability of powder falling off the pole piece during the winding process, and then by setting a dynamic dust removal component, the dynamic dust removal component is used to dynamically remove dust from the pole piece during the bending process. Therefore, even if the pole piece still loses powder during the winding process, the dynamic dust removal component is used to realize dynamic follow-up dust removal at the bending point of the pole piece, thereby further reducing the negative impact of dust on the wound battery cell.

[0009] The polymer lithium battery cell winding device of the present invention comprises a mounting plate, wherein the mounting plate is used to provide a mounting base;

[0010] A winding plate, the winding plate is rotatably connected to the mounting plate, and the winding plate is externally connected to a power mechanism through a guide rod;

[0011] A loading rail, which is fixedly mounted on the mounting plate and is used to guide the pole piece to move toward the winding plate;

[0012] An unwinding shaft, the unwinding shaft is rotatably connected to the mounting plate, and a diaphragm is wound on the unwinding shaft;

[0013] The number of the feeding rails and the unwinding shafts are both two, and they are arranged alternately in the vertical direction, and the pole pieces on the feeding rails and the diaphragms on the unwinding shafts are extended to the winding plate;

[0014] It also includes a static dust removal component, which is installed on the mounting plate and is used to perform negative pressure dust removal on the moving pole piece and diaphragm. The static dust removal component includes a negative pressure pipe, which is fixedly connected to the mounting plate and is externally connected to an air compressor through a conduit;

[0015] An extension tube, the extension tube is located above the negative pressure tube, the two ends of the extension tube are fixedly connected to the two ends of the negative pressure tube through a support plate, the extension tube and the negative pressure tube are connected through a conduit, the extension tube is opened on one side close to the pole piece, and the extension tube absorbs dust on the surface of the pole piece through negative pressure;

[0016] A pre-bending assembly, the pre-bending assembly is installed on the static dust removal assembly, and the pre-bending assembly is used to pre-bend the pole piece;

[0017] A dynamic dust removal component is installed on the static dust removal component, and the dynamic dust removal component is used for close-range negative pressure dust removal with the pole pieces located at the bending parts of the two ends of the winding plate.

[0018] Preferably, the pre-bending assembly includes a bending roller, a connecting plate is installed on the negative pressure tube, the connecting plate is rotatably connected to the bending roller at one end away from the negative pressure tube, and the bending roller extends above the pole piece;

[0019] The guide roller is rotatably sleeved on the negative pressure tube, and the pole piece goes around between the bending roller and the guide roller.

[0020] Preferably, the connecting plate is rotatably connected to the negative pressure tube, and a push rod is threadedly connected to the connecting plate, and the push rod is used to abut against the negative pressure tube.

[0021] Preferably, the surfaces of the bending roller and the guide roller are both fixedly connected with an elastic layer.

[0022] Preferably, the dynamic dust removal assembly includes a deflection rail, the deflection rail is rotatably connected to the side of the support plate close to each other, and the deflection rail extends away from the support plate to below the winding plate;

[0023] A deflection torsion spring, wherein the deflection torsion spring is installed between the deflection rail and the support plate, and the deflection torsion spring elastically and rotatably connects the deflection rail and the support plate;

[0024] A suction pipe, the suction pipe is installed between the deflection rails, the suction pipe is designed to be open on one side close to the winding plate, and the suction pipe is connected to the negative pressure pipe through a conduit;

[0025] In an initial state, the deflection rail is in contact with the winding plate under the support of the deflection torsion spring.

[0026] Preferably, two upper and lower adjacent deflection rails are arranged in a staggered manner along the width direction of the pole piece.

[0027] Preferably, a sliding groove is provided on the deflection rail, the suction pipe is slidably connected in the sliding groove, a support spring is installed in the sliding groove, and the support spring pushes the suction pipe toward the winding plate.

[0028] Preferably, one end of the suction tube located in the sliding groove is fixedly connected to a sliding block, and the sliding block is connected to the sliding groove by ball rolling.

[0029] Preferably, a push plate is fixedly connected to the winding plate, the push plate is in an incomplete annular design, and the push plate is used to push the suction tube.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1. The polymer lithium battery cell winding device described in the present invention uses a pre-bending component to bend and deform the pole piece with an amplitude smaller than the winding angle, thereby separating the particles and dust with a lower degree of fixation on the pole piece in advance, and in the subsequent movement process, the separated particles and dust are extracted by negative pressure through a static dust removal component, thereby reducing the probability of powder falling off the pole piece during the winding process, and then a dynamic dust removal component is set up to dynamically remove dust from the pole piece during the bending process. Therefore, even if the pole piece still loses powder during the winding process, the dynamic dust removal component is used to realize dynamic follow-up dust removal at the bending part of the pole piece, thereby further reducing the negative impact of dust on the wound battery cell.

[0032] 2. The polymer lithium battery cell winding device described in the present invention, by setting a sliding groove and a supporting spring, causes the suction tube to switch at the two bent ends of the winding plate, and during the switching process, negative pressure dust removal is always performed, thereby effectively enhancing the effect of collecting and removing the dust generated during the winding process of the electrode, reducing the dust content in the wound battery cell, and thereby reducing the negative impact of dust on the wound battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] Figure 1 is a stereogram of the present invention;

[0035] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0036] Figure 3 It is a partial structural diagram of the present invention;

[0037] Figure 4 is a partial cross-sectional view of the deflection rail;

[0038] In the figure: 1. Mounting plate; 11. Loading rail; 12. Unwinding shaft; 2. Winding plate; 21. Negative pressure tube; 22. Extension tube; 23. Support plate; 24. Connecting plate; 25. Push rod; 3. Bending roller; 31. Guide roller; 4. Deflection rail; 41. Deflection torsion spring; 42. Suction tube; 43. Sliding groove; 44. Support spring; 5. Sliding block; 6. Push plate. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] like Figures 1 to 4 As shown, a polymer lithium battery cell winding device according to the present invention comprises a mounting plate 1, wherein the mounting plate 1 is used to provide a mounting base;

[0041] A winding plate 2, wherein the winding plate 2 is rotatably connected to the mounting plate 1, and the winding plate 2 is externally connected to a power mechanism via a guide rod;

[0042] A loading rail 11, which is fixedly mounted on the mounting plate 1 and is used to guide the pole piece to move onto the winding plate 2;

[0043] An unwinding shaft 12, the unwinding shaft 12 is rotatably connected to the mounting plate 1, and a diaphragm is wound on the unwinding shaft 12;

[0044] The number of the feeding rails 11 and the unwinding shaft 12 are both two, and they are arranged alternately in the vertical direction. The pole piece on the feeding rail 11 and the diaphragm on the unwinding shaft 12 both extend to the winding plate 2;

[0045] It also includes a static dust removal component, which is installed on the mounting plate 1. The static dust removal component is used to perform negative pressure dust removal on the moving pole piece and diaphragm. The static dust removal component includes a negative pressure pipe 21, which is fixedly connected to the mounting plate 1. The negative pressure pipe 21 is externally connected to an air compressor through a conduit;

[0046] An extension tube 22, the extension tube 22 is located above the negative pressure tube 21, the two ends of the extension tube 22 are fixedly connected to the two ends of the negative pressure tube 21 through a support plate 23, the extension tube 22 and the negative pressure tube 21 are connected by a conduit, the extension tube 22 is open on one side close to the pole piece, and the extension tube 22 absorbs dust on the surface of the pole piece through negative pressure;

[0047] A pre-bending assembly, the pre-bending assembly is installed on the static dust removal assembly, and the pre-bending assembly is used to pre-bend the pole piece;

[0048] A dynamic dust removal assembly, the dynamic dust removal assembly is installed on the static dust removal assembly, the dynamic dust removal assembly is used for close-range, negative pressure dust removal with the pole pieces located at the bends at both ends of the winding plate 2;

[0049] During the winding process of the battery cell, the diaphragm and the electrode sheet prepared by rolling and sweeping powder in the previous process are loaded onto the winding equipment. During work, the staff arranges the electrode sheet and diaphragm placed on the loading rail 11 and the unwinding shaft 12 in the order of electrode sheet-diaphragm-pole sheet-diaphragm, and then places the overlapping ends of the electrode sheet and the diaphragm on the winding plate 2. The winding plate 2 used in the present application is composed of two sheet bodies, and one end of the two sheet bodies is fixedly connected. During loading, the overlapping electrode sheet and diaphragm are inserted between the sheet bodies through the gap at one end of the sheet bodies that is not fixedly connected to each other, and then the external power equipment such as an electric motor and a reduction motor is controlled by the program to drive the winding plate 2 to rotate. During the rotation of the winding plate 2, the electrode sheet and the diaphragm are wound It is wound on the winding plate 2 to form a wound battery cell. During this process, when the electrode moves from the loading rail 11 to the winding plate 2, it first passes through the pre-bending component. On the pre-bending component, the electrode undergoes pre-bending, and the pre-bending bending amplitude is smaller than the bending angle during winding. During the pre-bending process, the electrode undergoes a small bending deformation, causing the dust with a low degree of fixation on the electrode to fall off. As the electrode continues to move, when the electrode moves to the bottom of the extension tube 22 in the static dust removal assembly, since the extension tube 22 and the negative pressure tube 21 are fixedly connected to each other through the support plate 23, the negative pressure tube 21 is connected to the air compressor through the conduit. Therefore, when the equipment is running, the air compressor extracts air in the negative pressure tube 21, causing negative pressure to be formed in the negative pressure tube 21. Under the action of the external atmospheric pressure, the outside The air flows into the negative pressure pipe 21 through the extension tube 22 to offset the negative pressure in the negative pressure pipe 21, thereby forming a directional airflow at the opening of the extension tube 22. During the flow of the airflow, since the opening of the extension tube 22 is toward the pole piece, the dust and powder on the surface of the pole piece flows into the extension tube 22 under the entrainment of the airflow, and flows into the external gas purification device after passing through the extension tube 22, the negative pressure pipe 21, and the air compressor in turn. At the same time, because the extension tube 22 is flush with the width direction of the pole piece, the extension tube 22 can evenly remove dust from the pole piece during movement, effectively reducing the impact of dust and powder on the pole piece. After the pole piece has undergone static dust removal, when it is wound onto the winding plate 2 together with the diaphragm, the pole piece is on the winding plate 2. When winding, the bending angle is large and the degree of deformation is large, so the electrode may lose powder during the bending process. Because the direction of the pulling force on the electrode and the diaphragm changes during the rotation of the winding plate 2, the angle of the electrode and the diaphragm between the static dust removal component and the winding plate 2 on the vertical plane continues to change. Therefore, the dynamic dust removal component is used to utilize the dynamic movement ability of the dynamic dust removal component, so that the negative pressure extraction force of the dynamic dust removal component is always parallel to the electrode. The negative pressure extraction point is brought close to the bending part of the winding plate 2 to the electrode through the dynamic dust removal component, thereby effectively enhancing the effect of collecting dust falling from the deformed electrode, reducing the dust clamped between the electrode and the diaphragm, and then reducing the negative impact on the performance of the finally obtained wound battery cell.

[0050] In the present application, a pre-bending component is first used to bend and deform the pole piece with an amplitude smaller than the winding angle, thereby separating the particles and dust with a lower degree of fixation on the pole piece in advance, and in the subsequent movement process, the separated particles and dust are extracted by negative pressure through the static dust removal component, thereby reducing the probability of powder falling off the pole piece during the winding process, and then a dynamic dust removal component is set up to dynamically remove dust from the pole piece during the bending process. Therefore, even if the pole piece still loses powder during the winding process, the dynamic dust removal component is used to realize dynamic follow-up dust removal at the bending point of the pole piece, thereby further reducing the negative impact of dust on the wound battery cell.

[0051] As a preferred embodiment of the present invention, the pre-bending assembly includes a bending roller 3, a connecting plate 24 is installed on the negative pressure tube 21, and the connecting plate 24 is rotatably connected to the bending roller 3 at one end away from the negative pressure tube 21, and the bending roller 3 extends above the pole piece;

[0052] A guide roller 31, wherein the guide roller 31 is rotatably sleeved on the negative pressure tube 21, and the pole piece passes around between the bending roller 3 and the guide roller 31;

[0053] During the movement of the pole piece, by setting a bending roller 3 and a guide roller 31, the pole piece first contacts the bending roller 3, and the bending roller 3 is located above the pole piece. Therefore, the pole piece first undergoes a bending when passing through the bending roller 3, and as the pole piece continues to move, it moves to the top of the guide roller 31, causing the pole piece to undergo another bending, and the two bending directions of the pole piece are opposite, thereby realizing the pre-bending of the pole piece. During the pre-bending process, the pole piece is bent by the roller-shaped bending roller 3 and the guide roller 31. On the one hand, the cylindrical roller shape can be utilized to enable the pre-bending component to have a good transition with the front loading rail 11 and the rear winding plate 2. On the other hand, the cylindrical roller-shaped bending roller 3 and the guide roller 31 can reduce the friction on the pole piece by rotating, thereby reducing the degree of friction damage to the pole piece.

[0054] As a preferred embodiment of the present invention, the connecting plate 24 is rotatably connected to the negative pressure tube 21, and a push rod 25 is threadedly connected to the connecting plate 24, and the push rod 25 is used to abut against the negative pressure tube 21;

[0055] By rotating and connecting the connecting plate 24 and the negative pressure tube 21, and abutting them through the push rod 25, when the pre-bending angle of the electrode is changed, the staff rotates the push rod 25 that abuts against the negative pressure tube 21 in the initial state, thereby causing the push rod 25 threadedly connected to the connecting plate 24 to produce relative movement with the connecting plate 24, thereby causing the connecting plate 24 and the negative pressure tube 21 to be separated from the fixed state. After adjusting the angle of the connecting plate 24 on the negative pressure tube 21, the push rod 25 is rotated toward the inside of the connecting plate 24 again, causing the push rod 25 to abut against the negative pressure tube 21 again, thereby achieving relative fixation between the connecting plate 24 and the negative pressure tube 21, and then being able to adjust the bending angle of the pre-bending assembly by manual adjustment before starting preparation to achieve pre-bending of different angles of the electrode.

[0056] As a preferred embodiment of the present invention, the surfaces of the bending roller 3 and the guide roller 31 are both fixedly connected with an elastic layer;

[0057] By fixing an elastic layer on the bending roller 3 and the guide roller 31, the elastic layer can be made of elastic rubber or elastic plastic material. When the pole piece moves on the bending roller 3 and the guide roller 31, the elastic layer can produce a buffering effect on the contact between the bending roller 3, the guide roller 31 and the pole piece, thereby reducing the probability of damage to the pole piece during the pre-bending process.

[0058] As a preferred embodiment of the present invention, the dynamic dust removal assembly includes a deflection rail 4, the deflection rail 4 is rotatably connected to the side of the support plate 23 close to each other, and the deflection rail 4 extends away from the side of the support plate 23 to below the winding plate 2;

[0059] A deflection torsion spring 41, wherein the deflection torsion spring 41 is installed between the deflection rail 4 and the support plate 23, and the deflection torsion spring 41 elastically and rotatably connects the deflection rail 4 and the support plate 23;

[0060] A suction pipe 42, the suction pipe 42 is installed between the deflection rails 4, the suction pipe 42 is designed to be open on one side close to the winding plate 2, and the suction pipe 42 is designed to be connected to the negative pressure pipe 21 through a conduit;

[0061] In the initial state, the deflection rail 4 is supported by the deflection torsion spring 41 and abuts against the winding plate 2;

[0062] After pre-bending and static dust removal, the pole piece moves from the top of the guide roller 31 to the winding plate 2. In this process, since the winding plate 2 is a sheet-like body, the winding plate 2 pulls the pole piece at different positions during the rotation of the winding plate 2, causing the pole piece between the guide roller 31 and the winding plate 2 to be in a swinging state on the vertical plane. During the rotation of the winding plate 2, the deflection rail 4 elastically connected to the support plate 23 by the deflection torsion spring 41 also swings. Specifically, since the end of the deflection rail 4 away from the support plate 23 contacts the winding plate 2, and under the action of the deflection torsion spring 41, the deflection rail 4 abuts against the winding plate 2, During the rotation of the winding plate 2, under the action of the deflection torsion spring 41, the deflection rail 4 can produce the same swing as the pole piece, so that the deflection rail 4 is always parallel to the pole piece. Therefore, the suction pipe 42 installed on the deflection rail 4 is always located above the pole piece. When the pole piece bends and deforms on the winding plate 2, the suction pipe 42 located above the pole piece and always parallel to the pole piece generates a suction effect on the upper surface of the pole piece through negative pressure, and the airflow flows along the upper surface of the pole piece, thereby enhancing the airflow's entrainment effect on the dust at the bend of the pole piece, thereby enhancing the collection effect of the dust dropped when the pole piece is wound on the winding plate 2, and further reducing the dust content in the wound battery cell.

[0063] As a preferred embodiment of the present invention, two upper and lower adjacent deflection rails 4 are arranged in a staggered manner along the width direction of the pole piece;

[0064] Since there are two positive and negative pole pieces in the wound battery cell, two sets of dynamic dust removal components are also provided during winding. The deflection rails 4 in the two sets of dynamic dust removal components are abutted against the winding plate 2. In order to prevent motion interference between the two sets of deflection rails 4, the two sets of deflection rails 4 are staggered in the width direction of the pole pieces, thereby enhancing the movement smoothness of the dynamic dust removal components.

[0065] As a preferred embodiment of the present invention, a sliding groove 43 is provided on the deflection rail 4, and the suction pipe 42 is slidably connected in the sliding groove 43. A support spring 44 is installed in the sliding groove 43, and the support spring 44 pushes the suction pipe 42 to move closer to the winding plate 2;

[0066] During the winding process of the pole piece, since the winding plate 2 is a sheet-like structure, it is not convenient to always bring the suction tube 42 directly close to the bending part of the pole piece. Therefore, by providing the sliding groove 43 and the support spring 44, during the rotation of the winding plate 2, the suction tube 42 is pushed by the support spring 44, thereby causing the suction tube 42 to move toward the winding plate 2 until the suction tube 42 is blocked by the pole piece and the diaphragm wound on the winding plate 2. During the rotation of the winding plate 2, due to the continuous change of the contact position between the winding plate 2 and the deflection rail 4, the angle between the winding plate 2 and the deflection rail 4 changes. The angle between the winding plate 2 and the deflection rail 4 on the side close to the movement direction of the pole piece decreases until the winding plate 2 is flush with the deflection rail 4. The driving force of the suction tube 42 causes the suction tube 42 to compress the spring and move in the direction away from the bending part of the pole piece, thereby causing the suction tube 42 to move from one end of the winding plate 2 to the other end of the winding plate 2, and then when the winding plate 2 continues to rotate, the suction tube 42 follows the movement of the winding plate 2. During this process, the suction tube 42 always continues to generate negative pressure to generate attraction to collect the dust on the pole piece. By setting the sliding groove 43 and the supporting spring 44, the suction tube 42 is switched at the two bent ends of the winding plate 2, and negative pressure dust removal is always performed during the switching process, thereby effectively enhancing the effect of collecting and removing the dust generated during the winding process of the pole piece, reducing the dust content in the wound battery cell, and thereby reducing the negative impact of the dust on the wound battery cell.

[0067] As a preferred embodiment of the present invention, one end of the suction pipe 42 located in the sliding groove 43 is fixedly connected to a slider 5, and the slider 5 is connected to the sliding groove 43 by ball rolling;

[0068] During the movement of the suction tube 42, by providing a slider 5 and a ball, the sliding connection between the suction tube 42 and the sliding groove 43 is transformed into a rolling connection, thereby effectively reducing the friction resistance of the suction tube 42 moving in the sliding groove 43, thereby enhancing the flexibility of the suction tube 42 moving in the sliding groove 43.

[0069] As a preferred embodiment of the present invention, a push plate 6 is fixedly connected to the winding plate 2, and the push plate 6 is in an incomplete annular design. The push plate 6 is used to push the suction tube 42;

[0070] By setting the push plate 6, during the rotation of the winding plate 2, the push plate 6 rotates synchronously with the winding plate 2. Therefore, when the suction tube 42 moves toward the winding plate 2, it is hindered by the push plate 6. In the subsequent process of the push plate 6 following the rotation of the winding plate 2, the push plate 6, as an incomplete elliptical ring structure, can push the suction tube 42 more smoothly. On the one hand, the pushing effect on the suction tube 42 and the effect of the flexible movement of the suction tube 42 are enhanced. On the other hand, the push plate 6 prevents the suction tube 42 from contacting the pole piece and the diaphragm wound on the winding plate 2, thereby reducing the probability of damage to the pole piece and the diaphragm.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A polymer lithium battery cell winding device, comprising: A mounting plate (1), wherein the mounting plate (1) is used to provide a mounting base; A winding plate (2), the winding plate (2) being rotatably connected to the mounting plate (1), and the winding plate (2) being externally connected to a power mechanism via a guide rod; A loading rail (11), the loading rail (11) is fixedly mounted on the mounting plate (1) and is used to guide the pole piece to move onto the winding plate (2); an unwinding shaft (12), the unwinding shaft (12) being rotatably connected to the mounting plate (1), and a diaphragm being wound on the unwinding shaft (12); The number of the feeding rail (11) and the unwinding shaft (12) are both two, and they are arranged alternately in the vertical direction, and the pole piece on the feeding rail (11) and the diaphragm on the unwinding shaft (12) both extend to the winding plate (2); Features: Also includes A static dust removal component is installed on a mounting plate (1), and is used to perform negative pressure dust removal on a moving pole piece and a diaphragm. The static dust removal component includes A negative pressure pipe (21), the negative pressure pipe (21) is fixedly connected to the mounting plate (1), and the negative pressure pipe (21) is externally connected to an air compressor via a conduit; An extension tube (22), the extension tube (22) is located above the negative pressure tube (21), two ends of the extension tube (22) are fixedly connected to two ends of the negative pressure tube (21) through a support plate (23), the extension tube (22) and the negative pressure tube (21) are connected through a conduit, the extension tube (22) is designed to be open on one side close to the pole piece, and the extension tube (22) absorbs dust on the surface of the pole piece through negative pressure; A pre-bending assembly, the pre-bending assembly is installed on the static dust removal assembly, and the pre-bending assembly is used to pre-bend the pole piece; A dynamic dust removal component is installed on the static dust removal component, and the dynamic dust removal component is used for close-range negative pressure dust removal, with the pole pieces located at the bends at both ends of the winding plate (2).

2. The polymer lithium battery cell winding device according to claim 1, characterized in that: The pre-bending component comprises A bending roller (3), a connecting plate (24) is installed on the negative pressure tube (21), the connecting plate (24) is rotatably connected to the bending roller (3) at one end away from the negative pressure tube (21), and the bending roller (3) extends above the pole piece; A guide roller (31), wherein the guide roller (31) is rotatably sleeved on the negative pressure tube (21), and the pole piece is routed between the bending roller (3) and the guide roller (31).

3. The polymer lithium battery cell winding device according to claim 2, characterized in that: The connecting plate (24) is rotatably connected to the negative pressure tube (21), and a push rod (25) is threadedly connected to the connecting plate (24), and the push rod (25) is used to abut against the negative pressure tube (21).

4. The polymer lithium battery cell winding device according to claim 3, characterized in that: The surfaces of the bending roller (3) and the guide roller (31) are both fixedly connected with an elastic layer.

5. A polymer lithium battery cell winding device according to claim 1 or 4, characterized in that: The dynamic dust removal component comprises A deflection rail (4), the deflection rail (4) being rotatably connected to a side of the support plate (23) close to each other, and the deflection rail (4) extending to below the winding plate (2) from a side of the support plate (23); A deflection torsion spring (41), wherein the deflection torsion spring (41) is installed between the deflection rail (4) and the support plate (23), and the deflection torsion spring (41) elastically and rotatably connects the deflection rail (4) and the support plate (23); A suction pipe (42), the suction pipe (42) is installed between the deflection rails (4), the suction pipe (42) is designed to be open on one side close to the winding plate (2), and the suction pipe (42) and the negative pressure pipe (21) are connected through a conduit; In an initial state, the deflection rail (4) is in contact with the winding plate (2) with the support of the deflection torsion spring (41).

6. The polymer lithium battery cell winding device according to claim 5, characterized in that: The two deflection rails (4) adjacent to each other are arranged in a staggered manner along the width direction of the pole piece.

7. The polymer lithium battery cell winding device according to claim 6, characterized in that: The deflection rail (4) is provided with a sliding groove (43), the suction pipe (42) is slidably connected in the sliding groove (43), a support spring (44) is installed in the sliding groove (43), and the support spring (44) pushes the suction pipe (42) to move closer to the winding plate (2).

8. The polymer lithium battery cell winding device according to claim 7, characterized in that: One end of the suction pipe (42) located in the sliding groove (43) is fixedly connected to a sliding block (5), and the sliding block (5) is connected to the sliding groove (43) by rolling with a ball bearing.

9. The polymer lithium battery cell winding device according to claim 8, characterized in that: A push plate (6) is fixedly connected to the winding plate (2), the push plate (6) is of an incomplete annular design, and the push plate (6) is used to push the suction tube (42).

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