Battery cell reverse rolling device

Abstract

The embodiment of the utility model discloses a battery cell reverse winding device which comprises a reverse winding mechanism, a pole piece recycling mechanism, a funnel groove, a guide roller and two groups of diaphragm winding mechanisms, and the reverse winding mechanism comprises a linear driving mechanism and a clamping jaw assembly used for driving a battery cell to be reversely wound and unfolded; the guide roller is correspondingly arranged above the funnel groove; the two sets of diaphragm winding mechanisms are oppositely arranged on the two sides of the lower portion of the guide roller. Each diaphragm winding mechanism comprises a winding disc, a winding motor, a vacuum suction cup and a pushing air cylinder. The pushing air cylinder is connected with the winding disc. The pole piece recycling mechanism is correspondingly arranged on the front side of the guide roller and comprises a driving roller, a driven roller, a driving motor and a clamping air cylinder, and the clamping air cylinder is connected with the driven roller and drives the driven roller to be matched with the driving roller. According to the utility model, all the components are matched to finish a battery cell reverse winding process, the success rate of winding the positive pole piece is improved, and the design of winding the diaphragms on the left and right sides simultaneously can avoid the adhesion phenomenon of the diaphragms and the pole piece.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy recovery, in particular to a battery core rewinding device. Background Art

[0002] At present, the lithium battery recycling industry is in a stage of rapid development, facing huge market potential and challenges. With the rapid growth of electric vehicles and renewable energy, the number of discarded lithium batteries is also increasing, which provides huge potential for the recycling market. The global lithium battery recycling market is highly competitive, and major recycling companies are constantly innovating and advancing technology to improve recycling efficiency and reduce recycling costs in order to gain a competitive advantage in the market. However, lithium battery recycling technology is still relatively immature. Due to the complex composition of lithium batteries and great safety hazards, there are certain difficulties and risks in the recycling process.

[0003] Therefore, developing more efficient and safer lithium battery recycling technology is a major challenge facing the current market. With the continuous advancement of technology, rewinding equipment is developing in the direction of efficiency and intelligence. By introducing advanced control systems and sensors, the equipment can more accurately control the winding process and improve production efficiency. At the same time, intelligent technology also makes the operation of the equipment more convenient and reduces the skill requirements for operators. With the continuous expansion of the lithium battery recycling market, the demand for rewinding equipment is also continuing to grow. Especially in the fields of electric vehicles and renewable energy, the recycling and processing of waste lithium batteries has become an important issue, which provides huge development space for the rewinding equipment market.

[0004] The dewinding equipment industry is also facing some challenges in its development. For example, the lack of technological research and development and innovation capabilities, the intensification of market competition, and the fluctuation of raw material prices may have a certain impact on the development of the industry. Some dewinding equipment may have insufficient precision during operation, which may cause deviation or unevenness of the material during the winding process, thus affecting the quality of the product. The stability of the equipment is the key to ensuring continuous and efficient production. However, some dewinding equipment may experience performance fluctuations or failures during long-term operation due to design or manufacturing problems, thus affecting production efficiency. Although some dewinding equipment has introduced certain intelligent technologies, overall, the industry's application of intelligence is still limited. This may lead to deficiencies in the equipment in terms of automated control, data analysis, and fault warning, reducing the ease of use and maintenance efficiency of the equipment. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a battery cell rewinding device to realize the full automation of rewinding the positive electrode sheet, the diaphragm and the negative electrode sheet.

[0006] In order to solve the above technical problems, the embodiment of the utility model proposes a battery cell rewinding device, including a reverse winding mechanism, a pole piece recovery mechanism, a funnel groove, a guide roller and two sets of diaphragm rewinding mechanisms, wherein:

[0007] The reverse winding mechanism includes a linear drive mechanism and a clamping claw assembly for driving the battery cell to be reversed and unfolded. The linear drive mechanism is horizontally arranged above the funnel groove, and the clamping claw assembly is arranged on the linear drive mechanism; the guide roller is correspondingly arranged above the funnel groove for guiding the unfolded battery cell;

[0008] Two sets of diaphragm winding mechanisms are relatively arranged on both sides below the guide roller. The diaphragm winding mechanism includes a winding disk, a winding motor, a vacuum suction cup, and a pushing cylinder. The winding disk is arranged on the output shaft of the winding motor, and the vacuum suction cup is installed on the winding disk; the pushing cylinder is connected to the winding disk to drive the vacuum suction cup to move toward the diaphragm of the battery cell, so that the vacuum suction cup can absorb the diaphragm;

[0009] The pole piece recovery mechanism is arranged at the front side of the guide roller, and includes an active roller, a driven roller, an active motor, and a clamping cylinder. The active roller is arranged on the output shaft of the active motor; the clamping cylinder is connected to the driven roller, and drives the driven roller to cooperate with the active roller to clamp the positive pole piece of the battery cell or separate from the active roller.

[0010] Furthermore, the clamping jaw assembly includes a clamping cylinder, two sets of rewinding motors and two sets of rewinding jaws. The two sets of rewinding motors are respectively connected to both ends of the clamping cylinder, and the two sets of rewinding motors drive the two sets of rewinding jaws respectively.

[0011] Furthermore, it also includes a manipulator mechanism, which includes an XZ axis driving mechanism and a claw cylinder. The claw cylinder is arranged on the XZ axis driving mechanism, and clamping claws are arranged on both ends of the claw cylinder.

[0012] Furthermore, the manipulator mechanism also includes a stretching cylinder and an adsorption portion. The stretching cylinder is mounted on one of the clamping jaws, and the adsorption portion is connected to the stretching cylinder.

[0013] Furthermore, a guide chute portion is obliquely arranged on the upper front side of the funnel groove, and a guide roller is arranged on the top of the guide chute portion.

[0014] Furthermore, it also includes a left roller and a right roller, and the left roller and the right roller are correspondingly arranged above the two groups of diaphragm winding mechanisms.

[0015] Furthermore, a limiting plate is correspondingly provided above the left passing roller or the right passing roller.

[0016] Furthermore, a fiber optic sensor for detecting whether the positive pole piece is offset is also provided on the front side of the pole piece recovery mechanism.

[0017] Furthermore, a protective plate for limiting the unloading position of the negative electrode sheet is provided below the two sets of diaphragm winding mechanisms.

[0018] Furthermore, the clamping jaw assembly includes a rewinding motor, on which a pair of plated rods for hanging the battery core are mounted.

[0019] Beneficial effects of the utility model: The various components of the utility model cooperate to complete the battery cell rewinding process, improving the success rate of positive electrode sheet rewinding, wherein the design of rewinding the diaphragm on both sides simultaneously can avoid the phenomenon of diaphragm sheet adhesion. Due to the ductility of the positive electrode sheet, the design of further rewinding of the funnel groove can avoid clamping the battery cell during the rewinding process to damage it, thereby improving the integrity of the positive electrode sheet. The application of the module of the utility model increases the actual use space of the device, further improving the efficiency and action accuracy of the rewinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of the battery cell rewinding device according to an embodiment of the utility model.

[0021] Figure 2 It is a three-dimensional structural diagram of a battery cell rewinding device at one angle according to an embodiment of the utility model.

[0022] Figure 3 It is a three-dimensional structural diagram of the battery cell rewinding device of an embodiment of the utility model from another angle.

[0023] Figure 4 It is a three-dimensional structural diagram of the pole piece recovery mechanism of the embodiment of the utility model.

[0024] Figure 5 It is a three-dimensional structural diagram of the left and right roller parts of an embodiment of the utility model.

[0025] Figure 6 It is a three-dimensional structural diagram of the diaphragm winding mechanism of the embodiment of the utility model.

[0026] Figure 7 It is a three-dimensional structural diagram of the reverse winding mechanism and the manipulator mechanism of an embodiment of the utility model from one angle.

[0027] Figure 8 It is a three-dimensional structural diagram from another angle of the reverse winding mechanism and the manipulator mechanism of the embodiment of the utility model.

[0028] Description of Figure Numbers

[0029] Battery core 1, reverse winding mechanism 10, linear drive mechanism 11, clamping cylinder 12, rewinding motor 13, rewinding claw 14, bearing 15, plating rod 16, spring assembly 17, pulley mechanism 18, pole piece recovery mechanism 20, active roller 21, driven roller 22, active motor 23, clamping cylinder 24, linear screw module 25, optical fiber sensor 26, cylinder 27, diaphragm winding mechanism 30, winding disk 31, winding Motor 32, vacuum suction cup 33, pushing cylinder 34, guard plate 35, linear module 36, material frame 37, winding position adjustment mechanism 38, manipulator mechanism 40, XZ axis drive mechanism 41, claw cylinder 42, clamping claw 43, stretching cylinder 44, adsorption part 45, funnel groove 50, guide slide groove part 51, guide roller 52, left roller 53, right roller 54, limit plate 55, guide roller 56, roller adjustment cylinder 57. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model is further described in detail below in conjunction with the drawings and specific embodiments.

[0031] In the embodiments of the present invention, if there are directional indications (such as up, down, left, right, front, back, etc.), they are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] Please refer to Figures 1 to 8 The battery cell rewinding device of the embodiment of the utility model includes a reverse winding mechanism, a pole piece recovery mechanism, a funnel groove, a guide roller and two sets of diaphragm rewinding mechanisms.

[0034] The reverse winding mechanism includes a linear drive mechanism and a clamping jaw assembly for driving the battery cell to rewind and unfold. The linear drive mechanism is horizontally arranged above the funnel groove, and the clamping jaw assembly is arranged on the linear drive mechanism. The guide roller is correspondingly arranged above the funnel groove for guiding the unfolded battery cell. After the reverse winding mechanism rewinds and unfolds the battery cell, the battery cell is placed in the funnel groove for rewinding to avoid the battery cell being rewound at the position of the clamping jaw assembly, which may easily damage the battery cell. A guide chute portion is obliquely arranged above the front side of the funnel groove, and the guide roller is correspondingly arranged at the top of the guide chute portion. The guide chute portion facilitates the battery cell to slide down to the funnel groove for rewinding. When the clamping jaw assembly is released, the battery cell slides from the top of the guide chute portion to the bottom, and then to the funnel groove.

[0035] In the specific implementation, the clamp assembly has two structures, one for different battery cells. There are two types of battery cell materials, one is hot pressed and the electrode is compacted and clamped by the clamp of Example 1, and the other is not hot pressed and the electrode is loose and is inserted into the plating rod of Example 2.

[0036] Embodiment 1: The clamping jaw assembly includes a clamping cylinder, two sets of rewinding motors and two sets of rewinding jaws. The clamping cylinder is used to drive the rewinding clamps that clamp the battery cell to move back and forth along a horizontal path. The two sets of rewinding motors are respectively connected to the two ends of the clamping cylinder, and the two sets of rewinding motors drive the two sets of rewinding jaws respectively. In specific implementation, the rewinding motor can drive the rewinding jaws to rotate through a pulley mechanism. The rewinding jaws can be installed through bearings, and the bearings are then connected to the clamping cylinder. When the clamping cylinder retracts, the rewinding jaws on both sides of the clamping cylinder clamp the battery cell, and the two sets of rewinding motors synchronously drive the rewinding jaws on both sides, so that the battery cell reverses and is unfolded. In order to improve the stability of the clamping cylinder drive, the rewinding motor and the rewinding jaws can be installed on a guide rail.

[0037] In specific implementation, the battery cell can be placed in the clamping position of the rewinding clamp manually or by a robot mechanism. The robot mechanism includes an XZ-axis drive mechanism and a claw cylinder, the claw cylinder is arranged on the XZ-axis drive mechanism, and clamps are arranged on both ends of the claw cylinder. The XZ-axis drive mechanism can be an XZ-axis drive mechanism composed of an X-axis linear screw drive mechanism and a Z-axis linear screw drive mechanism arranged on the X-axis linear screw drive mechanism.

[0038] Since the front end pole piece of the battery cell grasped by the manipulator mechanism may be uneven or insufficient in length, preferably, the manipulator mechanism further includes a stretching cylinder and an adsorption part, wherein the stretching cylinder is mounted on one of the clamping claws, and the adsorption part is connected to the stretching cylinder. The adsorption part is used to adsorb the front end of the pole piece of the battery cell, and the stretching cylinder extends to stretch and unfold the pole piece at the front end of the battery cell.

[0039] Example 2: Please refer to Figure 5 The clamping jaw assembly includes a set of rewinding motors, and the rewinding motor is directly mounted on the linear drive mechanism. In specific implementation, the clamping jaw assembly can also be directly mounted above the left roller and the right roller. A pair of plating rods for hanging the battery cells are mounted on the rewinding motor. The ends of the plating rods are mounted on the output shafts of the rewinding motor through spring assemblies. The plating rods can be arranged relatively parallel. The spring assemblies apply outward tension to the plating rods to adjust the tension between the two plating rods. When the unheat-pressed pole piece is loosely sleeved on the plating rods, the two plating rods support the pole piece outward and tighten it. The unheat-pressed pole piece can be installed manually by manually sleeved on the plating rod.

[0040] The left and right rollers are respectively arranged above the two groups of diaphragm winding mechanisms. The two groups of diaphragm winding mechanisms are relatively arranged below the left and right rollers. The battery cell has a total of 4 layers, namely the positive electrode sheet, the diaphragm, the negative electrode sheet, and the diaphragm. The rolled battery cell clamped by the clamping jaw assembly is unwound and unfolded, the front end of the battery cell is unfolded, the positive electrode sheet is recovered by the sheet recovery mechanism to the next process, and the diaphragm, negative electrode sheet, and diaphragm part of the battery cell naturally hang down and fall between the left and right rollers, and then fall between the two groups of diaphragm winding mechanisms.

[0041] A limit plate is provided above the left or right roller, and a guide roller is provided on the limit plate. When the unfolded positive electrode sheet is loaded, the limit plate can be used to absorb the battery cell, limit the battery cell, and improve the rewinding efficiency.

[0042] Preferably, the left and right rollers are mounted on a roller adjustment mechanism for adjusting the distance between the left and right rollers. The roller adjustment mechanism is composed of a roller adjustment cylinder and a guide rail. The left and right rollers are mounted on the guide rail. The roller adjustment cylinder is connected to the roller (i.e., the left roller) with a limit plate on the top. There are preferably two sets of roller adjustment cylinders and guide rails.

[0043] The diaphragm winding mechanism includes a winding disk, a winding motor, a vacuum suction cup, and a push cylinder. The winding disk is arranged on the output shaft of the winding motor, and the vacuum suction cup is installed on the winding disk; the push cylinder is connected to the winding disk, driving the vacuum suction cup to move toward the diaphragm of the battery cell, so that the vacuum suction cup can adsorb the diaphragm. The push cylinder pushes the winding disk, the winding motor, and the vacuum suction cup, so that the vacuum suction cup adsorbs the diaphragm of the battery cell (the vacuum suction cups of the diaphragm winding mechanism on both sides adsorb the diaphragms on both sides of the negative electrode sheet respectively), and the winding motor drives the winding disk to realize the winding of the diaphragm. That is, the lower diaphragm of the positive electrode sheet is wound by the vacuum suction cup and the winding disk on the right side, and the negative electrode sheet is directly unloaded to the material frame without winding. The guard plate is used to limit the unloading position of the negative electrode sheet. In specific implementation, the diaphragm winding assembly is located on the winding position adjustment mechanism, and the winding position adjustment mechanism is located on the linear module, which is convenient for adjusting the winding position. The winding position adjustment mechanism can adopt a linear screw rod to adjust the Y-axis position of the diaphragm winding assembly.

[0044] The winding disk is preferably in the shape of a flat rectangular parallelepiped, and each surface has a certain curvature. There are preferably multiple vacuum suction cups, and the multiple vacuum suction cups are arranged side by side on the side of the winding disk.

[0045] The electrode recovery mechanism is arranged at the front side of the guide roller. The electrode recovery mechanism includes an active roller, a driven roller, an active motor, and a clamping cylinder. The active roller is arranged on the output shaft of the active motor. The clamping cylinder is connected to the driven roller, driving the driven roller to cooperate with the active roller to clamp the positive electrode of the battery cell being transported or to separate it from the active roller. The positive electrode of the battery cell is loaded between the active roller and the driven roller, and the positive electrode can be loaded through a vacuum belt.

[0046] As an implementation method, the pole piece recovery mechanism is arranged on the linear screw module, and a fiber optic sensor for detecting whether the positive pole piece is offset is also arranged on the front side of the pole piece recovery mechanism. When offset occurs, the positions of the active roller and the driven roller are adjusted by the linear screw module, thereby adjusting the position of the positive pole piece. Preferably, the fiber optic sensor is arranged on a cylinder, and the adjustment of the detection position is realized by the cylinder.

[0047] The working principle of the utility model is as follows: 1. The claw cylinder of the manipulator mechanism drives the clamp to grab the battery core with the blue glue cut open (that is, the rolled battery core, the clamp clamps the front and back sides), the adsorption part adsorbs the front end of the battery core, and the stretching cylinder drives the adsorption part to stretch and unfold the battery core; 2. The battery core is transported to the space between the two sets of rewinding clamps for loading through the XZ axis drive mechanism, the clamping cylinder drives the rewinding clamp to clamp the battery core (the rewinding clamp clamps the two sides of the battery core), the claw cylinder drives the clamp to release, and the manipulator mechanism is reset; 3. The two sets of rewinding motors synchronously drive the rewinding clamp to reverse, and the electric The core continues to unfold; 4. The positive electrode sheet is loaded through the electrode sheet recovery mechanism, and the diaphragm, negative electrode sheet and diaphragm part of the battery cell fall between the left roller and the right roller, and then fall between the two sets of diaphragm winding mechanisms. The pushing cylinders of the diaphragm winding mechanisms on both sides push the winding disk, winding motor and vacuum suction cup, so that the vacuum suction cups respectively adsorb the diaphragms on both sides of the negative electrode sheet; 5. When the diaphragm begins to wind up, the linear drive mechanism retreats to the top of the funnel slot and loads the battery cell into the funnel slot for reverse winding; 6. The winding motor drives the winding disk to wind up the diaphragm.

[0048] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery cell rewinding device, characterized in that: It includes a reverse winding mechanism, a pole piece recovery mechanism, a funnel trough, a guide roller and two sets of diaphragm winding mechanisms, among which: The reverse winding mechanism includes a linear drive mechanism and a clamping claw assembly for driving the battery cell to be reversed and unfolded. The linear drive mechanism is horizontally arranged above the funnel groove, and the clamping claw assembly is arranged on the linear drive mechanism; the guide roller is correspondingly arranged above the funnel groove for guiding the unfolded battery cell; Two sets of diaphragm winding mechanisms are relatively arranged on both sides below the guide roller. The diaphragm winding mechanism includes a winding disk, a winding motor, a vacuum suction cup, and a pushing cylinder. The winding disk is arranged on the output shaft of the winding motor, and the vacuum suction cup is installed on the winding disk; the pushing cylinder is connected to the winding disk to drive the vacuum suction cup to move toward the diaphragm of the battery cell, so that the vacuum suction cup can absorb the diaphragm; The pole piece recovery mechanism is arranged at the front side of the guide roller, and includes an active roller, a driven roller, an active motor, and a clamping cylinder. The active roller is arranged on the output shaft of the active motor; the clamping cylinder is connected to the driven roller, and drives the driven roller to cooperate with the active roller to clamp the positive pole piece of the battery cell or separate from the active roller.

2. The battery cell rewinding device according to claim 1, characterized in that: The clamping jaw assembly comprises a clamping cylinder, two sets of rewinding motors and two sets of rewinding jaws. The two sets of rewinding motors are respectively connected to two ends of the clamping cylinder, and the two sets of rewinding motors respectively drive the two sets of rewinding jaws.

3. The battery cell rewinding device according to claim 2, characterized in that: It also includes a manipulator mechanism, which includes an XZ axis driving mechanism and a claw cylinder. The claw cylinder is arranged on the XZ axis driving mechanism, and clamping claws are arranged on both ends of the claw cylinder.

4. The battery cell rewinding device according to claim 3, characterized in that: The manipulator mechanism also includes a stretching cylinder and an adsorption part. The stretching cylinder is installed on one of the clamping claws, and the adsorption part is connected to the stretching cylinder.

5. The battery cell rewinding device according to claim 1, characterized in that: A guide chute portion is obliquely arranged on the upper front side of the funnel groove, and a guide roller is arranged on the top of the guide chute portion.

6. The battery cell rewinding device according to claim 1, characterized in that: It also includes a left passing roller and a right passing roller, and the left passing roller and the right passing roller are correspondingly arranged above the two groups of diaphragm winding mechanisms.

7. The battery cell rewinding device according to claim 6, characterized in that: A limit plate is correspondingly arranged above the left passing roller or the right passing roller.

8. The battery cell rewinding device according to claim 1, characterized in that: A fiber optic sensor for detecting whether the positive pole piece is offset is also provided on the front side of the pole piece recovery mechanism.

9. The battery cell rewinding device according to claim 1, characterized in that: A protective plate for limiting the unloading position of the negative electrode sheet is provided below the two sets of diaphragm winding mechanisms.

10. The battery cell rewinding device according to claim 1, characterized in that: The clamping jaw assembly comprises a rewinding motor, on which a pair of plated rods for hanging electric cores are mounted.

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