Lithium battery cell assembling device

Abstract

The invention discloses a lithium battery cell assembling device, and relates to the technical field of lithium battery production, the lithium battery cell assembling device comprises a rotating shaft, the rotating shaft is fixedly connected with a motor, rotating rings are rotatably connected to the outer sides of the two ends of the rotating shaft, the rotating shaft is rotatably connected with a shell through the rotating rings, a square hole is formed in the middle of the outer side of the rotating shaft, and a round rod is slidably connected in the square hole; the outer side of the round rod is rotationally connected with a connecting rod, the end, away from the round rod, of the connecting rod is rotationally connected with a fixing rod, the outer side of the rotating shaft is fixedly connected with a reset spring, and the end, away from the rotating shaft, of the reset spring is fixedly connected with an arc plate. According to the lithium battery cell assembling device, the initial position is fixed, so that the pole piece and the diaphragm can be ensured to be wound around the roll core neatly from the beginning, the relative position of each layer is kept stable, the interlayer deviation phenomenon is greatly reduced, and the internal structure consistency of the battery is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production, and in particular to a lithium battery core assembly device. Background Art

[0002] Lithium-ion power battery is a new type of high-energy battery that has been successfully developed. The negative electrode of this battery is made of materials such as graphite, and the positive electrode is made of lithium iron phosphate, lithium cobalt oxide, lithium titanate, etc. It has entered practical use. Due to its advantages such as high energy, high battery voltage, wide operating temperature range, and long storage life, it has been widely used in various electrical appliances. The voltage of lithium power battery is high, which is 3 times that of nickel-cadmium battery and nickel-hydrogen battery, and nearly 2 times that of lead-acid battery. This is also an important reason for the high specific energy of lithium-ion power battery.

[0003] At the beginning of winding, the starting positions of the pole pieces and the diaphragms are prone to shift, which can easily lead to a short circuit caused by the positive and negative pole pieces fitting together. In addition, when winding the positive pole pieces, diaphragms and negative pole pieces, the contact between the battery cell pole pieces and the diaphragms is not tight enough, resulting in low quality and short service life of the manufactured battery cell products. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lithium battery cell assembly device, comprising a base, a shell is fixedly installed on the top of the base, a through hole is opened on the outer side of the shell, a feed port is opened on one end of the shell away from the through hole, a motor is fixedly connected to the outer side of the shell, and a cylinder is rotatably connected to one end of the shell away from the motor; A winding assembly, the winding assembly is fixedly connected to the output end of the motor, and the winding assembly is located on a side close to the through hole; A pressing assembly, the pressing assembly is rotatably connected to the inner wall of the shell; A positioning assembly, the positioning assembly being rotatably connected to the inner wall of the shell; The limiting assembly is rotatably connected to the inner wall of the shell; the winding assembly, the pressing assembly, the positioning assembly and the limiting assembly are sequentially arranged inside the shell; Among them, the winding assembly includes a rotating shaft, which is fixedly connected to the motor, and swivels are rotatably connected to the outer sides of both ends of the rotating shaft. The rotating shaft is rotatably connected to the shell through the swivels. A square hole is formed in the middle of the outer side of the rotating shaft, and a round rod is slidably connected to the inside of the square hole. The positive electrode sheet, diaphragm and negative electrode sheet are placed in sequence and aligned, wherein the diaphragm is located between the positive electrode sheet and the negative electrode sheet. When fitting, the positive electrode sheet and the negative electrode sheet are limited by the upper and lower ends of the pressing assembly, and then the cylinder drives the round rod to move toward the end away from the motor, so that the outer connecting rod of the round rod drives the fixed rod to extend toward the arc plate under the limiting action of the middle column, so that the starting position of the electrode sheet and the diaphragm on the winding assembly is clamped, and then the motor drives the rotating shaft to rotate, so that the electrode sheet and the diaphragm are rotated. The outer side of the arc plate on both sides of the shaft starts to wind, and by fixing the starting position, it can ensure that the pole piece and the diaphragm are neatly wound around the winding core from the beginning, so that the relative position between each layer remains stable, greatly reducing the interlayer offset phenomenon, thereby improving the internal structure consistency of the battery, and at the same time, by setting a reset spring, the arc plate is fitted with the outer pole piece and diaphragm, which can reduce the gap between the pole pieces and improve the energy density of the battery. The round rod is fixedly connected to the extended end of the cylinder, and the outer side of the round rod is rotatably connected to a connecting rod, and the end of the connecting rod away from the round rod is rotatably connected to a fixed rod, and the outer side of the rotating shaft is fixedly connected to a reset spring, and the end of the reset spring away from the rotating shaft is fixedly connected to the arc plate, and the fixed rod is located at the gap between the arc plate and the rotating shaft.

[0005] Preferably, there are multiple limit assemblies, the cylinder and the motor are located on the same axis, and the internal rotation of the shell is connected to a transmission belt. By setting the transmission belt, the pole piece and the diaphragm can be wound at the same speed and rhythm, ensuring that each layer of the pole piece can be completely isolated by the diaphragm, thereby improving the safety and performance of the battery. At the same time, they can better cooperate with each other during the winding process and reduce internal gaps, thereby improving the mechanical strength of the battery cell, making it more stable during subsequent processing, transportation and use, and not prone to loosening or deformation. The transmission belt is transmission-connected to the multiple limit assemblies, and the shell is rotationally connected to the inner wall near the limit assembly with a pressure wheel, and the pressure wheel is located above the limit assembly.

[0006] Preferably, there are multiple return springs, which are symmetrically arranged at both ends of the rotating shaft, there are two arc plates, which are symmetrically arranged with the rotating shaft as the center, there are multiple connecting rods, which are symmetrically arranged with the rotating shaft as the center, and an intermediate column is fixedly connected to the inner edge of the square hole, and the intermediate column and the connecting rod are alternately and evenly distributed.

[0007] Preferably, the limit assembly includes a rotating shaft, the outer side of the rotating shaft is fixedly connected to a rotating drum, the outer side of the rotating drum is provided with an inclined groove, the inclined grooves are arranged at both ends of the rotating drum, the inclined grooves are evenly distributed with the rotating shaft as the center, a circular hole is provided inside the inclined groove, the circular hole is located on one side close to the middle of the rotating drum, the end of the rotating shaft is fixedly connected to a gear, the motor drives the rotating shaft to rotate, the rotating shaft drives the arc plate to rotate, thereby winding the pole piece and the diaphragm, and then driving the limit assembly to rotate, when the pole piece or the diaphragm is offset, the pole piece contacts and squeezes the limit block at the end of the rotating drum, the limit block is forced to move in the direction of the inclined groove toward the fixed frame, and under the elastic force of the elastic rope, the limit block drives the offset pole piece and diaphragm to reset, which can effectively prevent the pole piece and diaphragm from excessive offset during the winding process. In order to avoid the short circuit of the positive and negative poles, the movement trajectory of the pole piece and the diaphragm is controlled by setting a limit block, so that the chance of contact between the pole piece and the diaphragm and the surrounding equipment parts is reduced, and the possibility of damage such as burrs, scratches or tears due to mutual friction or collision is reduced. The gear is rotatably connected to the transmission belt, the end face of the rotating drum is fixedly connected to the fixed frame, the middle part of the fixed frame is fixedly connected to the rotating shaft, a guide groove is provided on the side of the fixed frame close to the rotating drum, and a conical block is fixedly connected to the outer side of the rotating shaft, the conical block is located at the gap between the fixed frame and the rotating drum, the inner wall of the inclined groove is slidably connected to the limit block, and an elastic rope is provided inside the circular hole. There are multiple limit blocks, and the multiple limit blocks are symmetrically arranged with the elastic rope as the center, and a limit groove is provided on the side of the conical block close to the fixed frame.

[0008] Preferably, the pressing assembly includes a rotating rod, and there are two rotating rods. The rotating rod is rotatably connected to the inner wall of the shell, and a cylinder is rotatably connected to the middle part of the outer side of the rotating rod. An annular groove is provided on the outer side of the cylinder, and a ring block is slidably connected inside the annular groove. The ring block is magnetic, and the middle part of the rotating rod is magnetic. The magnetism between the rotating rod and the ring block is the same. The outer side of the rotating rod is rotatably connected to a fixed frame, and the fixed frame is located at the end of the rotating rod. The rotation of the rotating rod drives the cylinder to rotate, and the cylinder drives the ring block to rotate. Under the mutual repulsive force between the ring block and the rotating rod, the cylinder drives the ring block to rotate, so that extrusion is generated between the ring block and the semicircular plate, and the semicircular plate moves toward the middle, so that the positive electrode The sheet, diaphragm and negative electrode sheet fit tightly to ensure good contact between the positive and negative electrode sheets and the diaphragm, improve the manufacturing quality and performance of the battery cell, and avoid the problem of insufficient fitting. At the same time, the ring block contacts the edge side of the semicircular plate, so that the semicircular plate drives the extension plate to move toward the middle, so that the upper and lower symmetrically arranged extension plates push the electrode sheet and the diaphragm outward, which can effectively prevent the generation of bubbles and help to enhance the fit between the electrode sheet and the diaphragm. The end of the fixed frame is fixedly connected with a semicircular plate, the semicircular plate is fixedly connected to the two ends of the fixed frame, and the outer side of the semicircular plate is fixedly connected with an extension plate, and the extension plate is symmetrically arranged with the rotating rod as the center.

[0009] Preferably, the positioning assembly includes a fixed seat, which is fixedly connected to the inner wall of the shell, and the end of the fixed seat away from the shell is fixedly connected to an intermediate rod, the number of intermediate rods is multiple, and the end of the fixed seat is rotatably connected to a rotating plate, and the end of the rotating plate away from the fixed seat is fixedly connected to the intermediate rod, and the positive electrode sheet, the diaphragm and the negative electrode sheet pass through the gap between two adjacent intermediate rods in sequence, and the elastic properties of the compression spring are utilized so that the intermediate rod at the end of the rotating plate is located on the side of the upper and lower electrode sheets away from the diaphragm. At this time, the cleaning block on the outside of the fixed cylinder cleans the electrode sheets and the diaphragm, which can effectively reduce the risk of battery short circuit, and can also remove these impurities that may interfere with the electrochemical reaction, so that the ion transfer and electrochemical reaction inside the battery are more purely carried out between the designed active substance and the electrolyte, thereby improving the battery's charging and discharging efficiency and cycle life, the middle part of the outer side of the intermediate rod is rotatably connected to the fixed cylinder, the outer side of the fixed cylinder is fixedly connected to the cleaning block, the side of the rotating plate is fixedly connected to the compression spring, and the two ends of the compression spring are fixedly connected to the two rotating plates.

[0010] The present invention provides a lithium battery cell assembly device having the following beneficial effects: 1. The lithium battery cell assembly device can ensure that the pole piece and the diaphragm are neatly wound around the winding core from the beginning by fixing the starting position, so that the relative position between each layer remains stable, greatly reducing the interlayer offset phenomenon, thereby improving the internal structural consistency of the battery.

[0011] Second, the lithium battery cell assembly device is provided with a return spring so that the arc plate fits with the outer pole piece and the diaphragm, which can reduce the gap between the pole pieces and improve the energy density of the battery.

[0012] 3. The lithium battery cell assembly device, by setting a transmission belt, allows the pole piece and the diaphragm to be wound at the same speed and rhythm, ensuring that each layer of the pole piece can be completely isolated by the diaphragm, thereby improving the safety and performance of the battery.

[0013] Fourth, the lithium battery cell assembly device can effectively prevent the pole piece and the diaphragm from being excessively deviated during the winding process by using the elastic force of the elastic rope to reset the offset pole piece and the diaphragm with the limit block, thereby avoiding the occurrence of positive and negative short circuits.

[0014] 5. The lithium battery cell assembly device controls the movement trajectory of the pole piece and the diaphragm through the limit block, thereby reducing the chance of the pole piece and the diaphragm contacting with surrounding equipment parts, and reducing the possibility of damage such as burrs, scratches or tears caused by mutual friction or collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the external structure of a lithium battery cell assembly device of the present invention; Figure 2 It is another side view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the structure of the winding assembly of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the winding assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the limit assembly of the present invention; Figure 7 It is a schematic diagram of the local structure of the limit assembly of the present invention; Figure 8 It is a schematic diagram of the local structure of the limit assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the pressing assembly of the present invention; Fig.10 It is a schematic diagram of the structure of the positioning component of the present invention.

[0016] In the figure: 1, base; 2, shell; 3, winding assembly; 31, rotating shaft; 32, square hole; 33, round rod; 34, connecting rod; 35, fixing rod; 36, reset spring; 37, arc plate; 38, rotating ring; 39, intermediate column; 4, pressing assembly; 41, rotating rod; 42, cylinder; 43, ring groove; 44, ring block; 45, fixing frame; 46, semicircular plate; 47, extension plate; 5, positioning assembly; 51, fixing seat; 52, Middle rod; 53, rotating plate; 54, fixed cylinder; 55, compression spring; 56, cleaning block; 6, limiting assembly; 61, rotating shaft; 62, rotating cylinder; 63, gear; 64, limiting block; 65, fixing frame; 66, inclined groove; 67, round hole; 68, conical block; 69, limiting groove; 610, guide groove; 611, elastic rope; 7, cylinder; 8, motor; 9, through hole; 10, feed port; 11, transmission belt; 12, pressure wheel. DETAILED DESCRIPTION

[0017] 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.

[0018] The first embodiment, as Figures 1 to 5As shown, the present invention provides a technical solution: a lithium battery cell assembly device, comprising a base 1, a shell 2 is fixedly installed on the top of the base 1, a through hole 9 is opened on the outer side of the shell 2, a feed port 10 is opened on the end of the shell 2 away from the through hole 9, a motor 8 is fixedly connected to the outer side of the shell 2, and a cylinder 7 is rotatably connected to the end of the shell 2 away from the motor 8; The winding assembly 3 is fixedly connected to the output end of the motor 8, and the winding assembly 3 is located on a side close to the through hole 9; A pressing assembly 4, the pressing assembly 4 is rotatably connected to the inner wall of the housing 2; A positioning assembly 5, the positioning assembly 5 is rotatably connected to the inner wall of the housing 2; The limiting assembly 6 is rotatably connected to the inner wall of the housing 2; the winding assembly 3, the pressing assembly 4, the positioning assembly 5 and the limiting assembly 6 are sequentially arranged inside the housing 2; The winding assembly 3 includes a rotating shaft 31, which is fixedly connected to the motor 8. The outer sides of the two ends of the rotating shaft 31 are rotatably connected with rotating rings 38. The rotating shaft 31 is rotatably connected to the shell 2 through the rotating rings 38. A square hole 32 is formed in the middle of the outer side of the rotating shaft 31. A round rod 33 is slidably connected inside the square hole 32. The positive electrode sheet, the diaphragm and the negative electrode sheet are placed in sequence and aligned, wherein the diaphragm is located between the positive electrode sheet and the negative electrode sheet. When fitting, the positive electrode sheet and the negative electrode sheet are limited by the upper and lower ends of the pressing assembly 4. Then the cylinder 7 drives the round rod 33 to move toward the end away from the motor 8, so that the outer connecting rod 34 of the round rod 33 drives the fixing rod 35 to extend toward the arc plate 37 under the limiting action of the middle column 39, so that the starting position of the electrode sheet and the diaphragm on the winding assembly 3 is clamped. Then the motor 8 drives the rotating shaft 31 to rotate, so that the electrode sheet and the diaphragm are The membrane starts to be wound on the outside of the arc plate 37 on both sides of the rotating shaft 31. By fixing the starting position, it can ensure that the pole piece and the diaphragm are neatly wound around the winding core from the beginning, so that the relative position between each layer remains stable, greatly reducing the interlayer offset phenomenon, thereby improving the internal structure consistency of the battery, and at the same time, by setting the reset spring 36, the arc plate 37 is fitted with the outer pole piece and diaphragm, which can reduce the gap between the pole pieces and improve the energy density of the battery. The round rod 33 is fixedly connected to the extended end of the cylinder 7, and the outer side of the round rod 33 is rotatably connected to the connecting rod 34, and the end of the connecting rod 34 away from the round rod 33 is rotatably connected to the fixing rod 35, and the outer side of the rotating shaft 31 is fixedly connected to the reset spring 36, and the end of the reset spring 36 away from the rotating shaft 31 is fixedly connected to the arc plate 37, and the fixing rod 35 is located at the interval between the arc plate 37 and the rotating shaft 31.

[0019] There are multiple limit assemblies 6, the cylinder 7 and the motor 8 are located on the same axis, and the internal rotation of the shell 2 is connected to a transmission belt 11. By setting the transmission belt 11, the pole piece and the diaphragm can be wound at the same speed and rhythm, ensuring that each layer of the pole piece can be completely isolated by the diaphragm, thereby improving the safety and performance of the battery. At the same time, they can better cooperate with each other during the winding process and reduce internal gaps, thereby improving the mechanical strength of the battery cell, making it more stable during subsequent processing, transportation and use, and not prone to loosening or deformation. The transmission belt 11 is transmission-connected to multiple limit assemblies, and the shell 2 is rotationally connected to the inner wall near the limit assembly 6 with a pressure wheel 12, and the pressure wheel 12 is located above the limit assembly 6.

[0020] There are multiple return springs 36, which are symmetrically arranged at both ends of the rotating shaft 31. There are two arc plates 37, which are symmetrically arranged with the rotating shaft 31 as the center. There are multiple connecting rods 34, which are symmetrically arranged with the rotating shaft 31 as the center. An intermediate column 39 is fixedly connected to the inner edge of the square hole 32, and the intermediate column 39 and the connecting rod 34 are alternately and evenly distributed.

[0021] The second embodiment is based on the first embodiment. Figures 6 to 8As shown, the limit assembly 6 includes a rotating shaft 61, a rotating drum 62 is fixedly connected to the outer side of the rotating shaft 61, an inclined groove 66 is provided on the outer side of the rotating drum 62, and the inclined grooves 66 are arranged at both ends of the rotating drum 62, and the inclined grooves 66 are evenly distributed with the rotating shaft 61 as the center, and a circular hole 67 is provided inside the inclined groove 66, and the circular hole 67 is located on one side close to the middle of the rotating drum 62, and a gear 63 is fixedly connected to the end of the rotating shaft 61, and the motor 8 drives the rotating shaft 31 to rotate, and the rotating shaft 31 drives the arc plate 37 to rotate, so as to wind the pole piece and the diaphragm, and then drives the limit assembly 6 to rotate, when the pole piece or the diaphragm is offset, the pole piece contacts and squeezes the limit block 64 at the end of the rotating drum 62, and the limit block 64 is forced to move in the direction of the inclined groove 66 toward the fixed frame 65, and under the elastic force of the elastic rope 611, the limit block 64 drives the offset pole piece and diaphragm to reset, which can effectively prevent the pole piece and diaphragm from excessive offset during the winding process, thereby In order to avoid the occurrence of short circuit between the positive and negative electrodes, the movement trajectory of the pole piece and the diaphragm is controlled by setting a limit block 64, so that the chance of contact between the pole piece and the diaphragm and the surrounding equipment components is reduced, and the possibility of damage such as burrs, scratches or tears caused by mutual friction or collision is reduced. The gear 63 is rotatably connected to the transmission belt 11, the end face of the rotating drum 62 is fixedly connected to the fixed frame 65, the middle part of the fixed frame 65 is fixedly connected to the rotating shaft 61, and a guide groove 610 is provided on the side of the fixed frame 65 close to the rotating drum 62. A conical block 68 is fixedly connected to the outer side of the rotating shaft 61, and the conical block 68 is located at the gap between the fixed frame 65 and the rotating drum 62. The inner wall of the inclined groove 66 is slidably connected to the limit block 64, and an elastic rope 611 is provided inside the circular hole 67. There are multiple limit blocks 64, and the multiple limit blocks 64 are symmetrically arranged with the elastic rope 611 as the center. A limit groove 69 is provided on the side of the conical block 68 close to the fixed frame 65.

[0022] The third embodiment is based on the first and second embodiments. Fig. 9As shown, the pressing assembly 4 includes a rotating rod 41, and there are two rotating rods 41. The rotating rod 41 is rotatably connected to the inner wall of the shell 2. A cylinder 42 is rotatably connected to the middle part of the outer side of the rotating rod 41. An annular groove 43 is provided on the outer side of the cylinder 42. A ring block 44 is slidably connected inside the annular groove 43. The ring block 44 is magnetic, and the middle part of the rotating rod 41 is magnetic. The magnetism between the rotating rod 41 and the ring block 44 is the same. A fixed frame 45 is rotatably connected to the outer side of the rotating rod 41. The fixed frame 45 is located at the end of the rotating rod 41. The rotating rod 41 rotates to drive the cylinder 42 to rotate, and the cylinder 42 drives the ring block 44 to rotate. Under the mutual repulsive force between the ring block 44 and the rotating rod 41, the cylinder 42 drives the ring block 44 to rotate, so that extrusion is generated between the ring block 44 and the semicircular plate 46. The semicircular plate 46 moves toward the middle, so that the positive electrode sheet, the diaphragm and the negative electrode sheet fit closely, ensuring good contact between the positive and negative electrode sheets and the diaphragm, improving the manufacturing quality and performance of the battery cell, and avoiding the problem of insufficient fitting. At the same time, the ring block 44 contacts the edge side of the semicircular plate 46, so that the semicircular plate 46 drives the extension plate 47 to move toward the middle, so that the upper and lower symmetrically arranged extension plates 47 push the electrode sheet and the diaphragm outward, which can effectively prevent the generation of bubbles and help to enhance the fit between the electrode sheet and the diaphragm. The end of the fixed frame 45 is fixedly connected with the semicircular plate 46, and the semicircular plate 46 is fixedly connected to the two ends of the fixed frame 45. The outer side of the semicircular plate 46 is fixedly connected with the extension plate 47, and the extension plate 47 is symmetrically arranged with the rotating rod 41 as the center.

[0023] For the fourth embodiment, please refer to Fig.10 As shown, the positioning assembly 5 includes a fixing seat 51, the fixing seat 51 is fixedly connected to the inner wall of the shell 2, the fixing seat 51 is fixedly connected to the middle rod 52 at one end away from the shell 2, the number of the middle rods 52 is multiple, the end of the fixing seat 51 is rotatably connected to the rotating plate 53, the end of the rotating plate 53 away from the fixing seat 51 is fixedly connected to the middle rod 52, the positive electrode sheet, the diaphragm and the negative electrode sheet pass through the interval between two adjacent middle rods 52 in sequence, and the elastic performance of the compression spring 55 is used to make the middle rod 52 at the end of the rotating plate 53 located on the side of the upper and lower electrode sheets away from the diaphragm. At this time, the fixing cylinder 54 The cleaning block 56 on the outside cleans the pole pieces and diaphragms, which can effectively reduce the risk of battery short circuit. It can also remove impurities that may interfere with the electrochemical reaction, so that the ion transfer and electrochemical reaction inside the battery can be carried out more purely between the designed active substances and electrolytes, thereby improving the battery's charge and discharge efficiency and cycle life. The middle part of the outer side of the intermediate rod 52 is rotatably connected to a fixed cylinder 54, the outer side of the fixed cylinder 54 is fixedly connected to a cleaning block 56, and the side of the rotating plate 53 is fixedly connected to a compression spring 55, and both ends of the compression spring 55 are fixedly connected to the two rotating plates 53.

[0024] When in use, the positive electrode sheet, diaphragm and negative electrode sheet are placed in order and aligned, wherein the diaphragm is located between the positive electrode sheet and the negative electrode sheet. The cylinder 7 drives the round rod 33 to move toward the end away from the motor 8, so that the outer connecting rod 34 of the round rod 33 drives the fixing rod 35 to extend toward the arc plate 37 under the limiting action of the middle column 39, so as to clamp the starting position of the electrode sheet and the diaphragm on the winding assembly 3. Then the motor 8 drives the rotating shaft 31 to rotate, so that the electrode sheet and the diaphragm begin to be wound on the outside of the arc plate 37 on both sides of the rotating shaft 31. By fixing the starting position, it can be ensured that the electrode sheet and the diaphragm are neatly wound around the winding core from the beginning.

[0025] The rotation of the rotating rod 41 drives the cylinder 42 to rotate, and the cylinder 42 drives the ring block 44 to rotate. Under the mutual repulsive force between the ring block 44 and the rotating rod 41, the cylinder 42 drives the ring block 44 to rotate, so that compression is generated between the ring block 44 and the semicircular plate 46, and the semicircular plate 46 moves toward the middle, so that the positive electrode sheet, the diaphragm and the negative electrode sheet are tightly fitted.

[0026] The motor 8 drives the rotating shaft 31 to rotate, and the rotating shaft 31 drives the arc plate 37 to rotate, thereby winding the pole piece and the diaphragm, and then drives the limiting assembly 6 to rotate. When the pole piece or the diaphragm is offset, the pole piece contacts and squeezes the limiting block 64 at the end of the rotating drum 62. The limiting block 64 is forced to move in the direction of the inclined groove 66 toward the fixed frame 65. Under the elastic force of the elastic rope 611, the limiting block 64 drives the offset pole piece and diaphragm to reset, which can effectively prevent the pole piece and diaphragm from excessive offset during the winding process.

[0027] 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. A lithium battery cell assembly device, characterized in that: include: A base (1), a shell (2) is fixedly mounted on the top of the base (1), a through hole (9) is provided on the outer side of the shell (2), a feed port (10) is provided on the end of the shell (2) away from the through hole (9), a motor (8) is fixedly connected to the outer side of the shell (2), and a cylinder (7) is rotatably connected to the end of the shell (2) away from the motor (8); A winding assembly (3), the winding assembly (3) being fixedly connected to an output end of the motor (8), the winding assembly (3) being located on a side close to the through hole (9); A pressing assembly (4), the pressing assembly (4) being rotatably connected to the inner wall of the housing (2); A positioning assembly (5), the positioning assembly (5) being rotatably connected to the inner wall of the housing (2); a limiting assembly (6), the limiting assembly (6) being rotatably connected to the inner wall of the shell (2); the winding assembly (3), the pressing assembly (4), the positioning assembly (5) and the limiting assembly (6) are sequentially arranged inside the shell (2); The winding assembly (3) comprises a rotating shaft (31), the rotating shaft (31) is fixedly connected to the motor (8), the two ends of the rotating shaft (31) are rotatably connected to the outer side with a rotating ring (38), the rotating shaft (31) is rotatably connected to the housing (2) through the rotating ring (38), a square hole (32) is formed at the middle of the outer side of the rotating shaft (31), a round rod (33) is slidably connected inside the square hole (32), the round rod (33) is fixedly connected to the extended end of the cylinder (7), the outer side of the round rod (33) is rotatably connected to a connecting rod (34), the end of the connecting rod (34) away from the round rod (33) is rotatably connected to a fixing rod (35), the outer side of the rotating shaft (31) is fixedly connected to a return spring (36), the end of the return spring (36) away from the rotating shaft (31) is fixedly connected to an arc plate (37), and the fixing rod (35) is located at the interval between the arc plate (37) and the rotating shaft (31).

2. A lithium battery cell assembly device according to claim 1, characterized in that: There are a plurality of limit assemblies (6), the cylinder (7) and the motor (8) are located on the same axis, a transmission belt (11) is rotatably connected inside the housing (2), the transmission belt (11) is transmission-connected to a plurality of limit assemblies, and a pressure wheel (12) is rotatably connected to the inner wall of the housing (2) near the limit assemblies (6), and the pressure wheel (12) is located above the limit assemblies (6).

3. A lithium battery cell assembly device according to claim 2, characterized in that: There are a plurality of return springs (36), and the plurality of return springs (36) are symmetrically arranged at both ends of the rotating shaft (31). There are two arc plates (37), and the two arc plates (37) are symmetrically arranged with the rotating shaft (31) as the center. There are a plurality of connecting rods (34), and the plurality of connecting rods (34) are symmetrically arranged with the rotating shaft (31) as the center. An intermediate column (39) is fixedly connected to the inner edge of the square hole (32), and the intermediate column (39) and the connecting rod (34) are alternately and evenly distributed.

4. A lithium battery cell assembly device according to claim 3, characterized in that: The position limiting assembly (6) comprises a rotating shaft (61), the outer side of the rotating shaft (61) is fixedly connected to a rotating drum (62), the outer side of the rotating drum (62) is provided with an inclined groove (66), the inclined groove (66) is arranged at both ends of the rotating drum (62), and the inclined grooves (66) are evenly distributed around the rotating shaft (61).

5. A lithium battery cell assembly device according to claim 4, characterized in that: A circular hole (67) is provided inside the inclined groove (66), and the circular hole (67) is located on a side close to the middle of the rotating drum (62). A gear (63) is fixedly connected to the end of the rotating shaft (61), and the gear (63) is rotatably connected to the transmission belt (11). The end surface of the rotating drum (62) is fixedly connected to a fixing frame (65), and the middle of the fixing frame (65) is fixedly connected to the rotating shaft (61). A guide groove (610) is provided on a side of the fixing frame (65) close to the rotating drum (62).

6. A lithium battery cell assembly device according to claim 5, characterized in that: A conical block (68) is fixedly connected to the outer side of the rotating shaft (61), and the conical block (68) is located at the interval between the fixed frame (65) and the rotating drum (62). The inner wall of the inclined groove (66) is slidably connected to a limit block (64). An elastic rope (611) is arranged inside the circular hole (67). There are a plurality of limit blocks (64), and the plurality of limit blocks (64) are symmetrically arranged with the elastic rope (611) as the center. A limit groove (69) is provided on a side of the conical block (68) close to the fixed frame (65).

7. A lithium battery cell assembly device according to claim 1, characterized in that: The pressing assembly (4) comprises a rotating rod (41), wherein two rotating rods (41) are rotatably connected to the inner wall of the housing (2), a cylinder (42) is rotatably connected to the middle of the outer side of the rotating rod (41), an annular groove (43) is formed on the outer side of the cylinder (42), and a ring block (44) is slidably connected to the inside of the annular groove (43).

8. A lithium battery cell assembly device according to claim 7, characterized in that: The outer side of the rotating rod (41) is rotatably connected to a fixed frame (45), the fixed frame (45) is located at the end of the rotating rod (41), the end of the fixed frame (45) is fixedly connected to a semicircular plate (46), the semicircular plate (46) is fixedly connected to both ends of the fixed frame (45), the outer side of the semicircular plate (46) is fixedly connected to an extension plate (47), and the extension plate (47) is symmetrically arranged with the rotating rod (41) as the center.

9. A lithium battery cell assembly device according to claim 1, characterized in that: The positioning assembly (5) comprises a fixing seat (51), the fixing seat (51) being fixedly connected to the inner wall of the housing (2), one end of the fixing seat (51) away from the housing (2) being fixedly connected to an intermediate rod (52), the number of the intermediate rods (52) being multiple, and an end of the fixing seat (51) being rotatably connected to a rotating plate (53), the end of the rotating plate (53) away from the fixing seat (51) being fixedly connected to the intermediate rod (52).

10. A lithium battery cell assembly device according to claim 9, characterized in that: The middle part of the outer side of the intermediate rod (52) is rotatably connected to a fixed cylinder (54), the outer side of the fixed cylinder (54) is fixedly connected to a cleaning block (56), the side edge of the rotating plate (53) is fixedly connected to a compression spring (55), and the two ends of the compression spring (55) are fixedly connected to the two rotating plates (53).

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