Electrode plate manufacturing equipment

Abstract

The electrode slice manufacturing equipment comprises a discharging mechanism, a tensioning mechanism, a winding mechanism and a flattening mechanism, the tensioning mechanism is arranged on the rear side of the discharging mechanism along a conveying path and comprises a fixed part, a movable part and a first driving assembly, and the driving end of the first driving assembly is connected with the movable part; the tensioning mechanism is used for receiving the metal belt output from the discharging mechanism and is wound on the fixed part and the movable part; the winding mechanism comprises a cutting structure, a first clamping structure and a second driving assembly, the first clamping structure is used for clamping the metal strip conveyed from the tensioning mechanism, and the second driving assembly is used for controlling the first clamping structure to stretch out or retract and controlling the first clamping structure to rotate so as to wind the metal strip into an electrode plate; the cutting structure is arranged on the front side of the first clamping structure and used for cutting off the metal belt. And the flattening mechanism is used for receiving the electrode plate conveyed from the winding mechanism and carrying out hot pressing on the electrode plate. The production quality of the electrode plate can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing, in particular to an electrode sheet manufacturing device. BACKGROUND

[0002] In today's era of rapid technological development, electrode sheets, as key components in many advanced technology fields, play a crucial role in the battery industry, medical electronics, environmental monitoring sensors, and other fields. With the booming development of these industries, the market demand for electrode sheets is growing exponentially, and the requirements for their quality and production efficiency have reached an unprecedented level.

[0003] In the feeding process, in the traditional manual feeding method, manual operation cannot guarantee the stable and uniform output of the metal strip, which makes the tension of the metal strip in the transmission process fluctuate frequently and uncontrollably. Such uneven tension is extremely easy to cause the metal strip to deviate in the subsequent processing link, thereby affecting the dimensional accuracy of the electrode sheet. Moreover, the feeding differences between different operators or different batches are significant, resulting in poor stability of the electrode sheet quality, which seriously affects the consistency and yield of the product.

[0004] In addition, due to the lack of precise tension control means, the operator cannot accurately control the tension of the metal strip. This not only makes the internal stress state of each batch of electrode sheets different, but also directly reflects on the physical properties and quality of the electrode sheet, resulting in uneven product quality, which cannot meet the modern industry's requirements for high precision and high quality of electrode sheets. CONTENT OF THE INVENTION

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an electrode sheet manufacturing device that can improve the production quality of electrode sheets.

[0006] The present application provides an electrode sheet manufacturing device, comprising:

[0007] A feeding mechanism for feeding out a metal strip;

[0008] A tensioning mechanism arranged on the rear side of the feeding mechanism along a predetermined transmission path, comprising a fixed part, a movable part, and a first driving assembly, the driving end of the first driving assembly being connected with the movable part for driving the movable part to approach or move away from the fixed part, the tensioning mechanism being used for receiving the metal strip output from the feeding mechanism and winding around the fixed part and the movable part;

[0009] The winding mechanism is arranged at the rear side of the tensioning mechanism along the transmission path, and comprises a cutting structure, a first clamping structure and a second driving assembly. The first clamping structure is used for clamping the metal strip delivered from the tensioning mechanism. The driving end of the second driving assembly is connected with the first clamping structure, and is used for controlling the first clamping structure to extend or retract, and controlling the first clamping structure to rotate, so as to wind the metal strip into an electrode sheet. The cutting structure is arranged at the front side of the first clamping structure along the transmission path, and is used for cutting the metal strip, so as to separate the completed winding electrode sheet from the metal strip.

[0010] The flattening mechanism is arranged beside the winding mechanism, and is used for receiving the electrode sheet delivered from the winding mechanism, and performing hot pressing on the electrode sheet.

[0011] According to the electrode sheet manufacturing device, the following beneficial effects can be achieved. After the device is started, the control system controls the feeding mechanism to deliver the metal strip to the tensioning mechanism. At the same time, the first driving assembly drives the movable part of the tensioning mechanism to move away from the fixed part. The metal strip is gradually received between the movable part and the fixed part, and a proper tension is formed, so as to ensure the stability of the metal strip in the transmission process. When the receiving reaches a certain degree, the feeding mechanism stops feeding. The movable part moves towards the fixed part, and the tensioned metal strip is stably delivered to the winding mechanism. In the above process, the tension of the metal strip is adjusted by changing the position of the movable part. The tension is in a controllable range, and the uniformity of the metal strip tension is ensured during the feeding and tensioning process. When the metal strip is in tension, the interference of external factors can be resisted, and the surface flatness of the metal strip can be better maintained. The tensioned metal strip can be more uniformly distributed during winding, and each layer can be accurately attached to the previous layer, so as to ensure the uniformity of the electrode sheet on the winding structure, and improve the overall quality of the electrode sheet. When the metal strip reaches the winding mechanism, the second driving assembly controls the first clamping structure to extend, and accurately clamps the metal strip. Then, the second driving assembly drives the first clamping structure to rotate according to a preset program, and winds the metal strip into an electrode sheet at a stable speed and with accurate turns. After the winding is completed, the cutting structure cuts the metal strip connected with the electrode sheet according to a set position and timing. Finally, the flattening mechanism performs hot pressing on the electrode sheet according to preset temperature and pressure parameters, so as to press the metal strips in different layers of the electrode sheet together, improve the flatness of the electrode sheet, and improve the quality of the electrode sheet production.

[0012] According to some embodiments of the present application, the fixed part comprises a fixed plate and n+1 fixed rollers. The fixed rollers are arranged on the fixed plate in the vertical direction. The movable part comprises a movable plate and n movable rollers. The movable rollers are arranged on the movable plate in the vertical direction. The uppermost fixed roller in the fixed plate is the feeding end of the tensioning mechanism. The lowermost fixed roller in the fixed plate is the discharging end of the tensioning mechanism. The metal strip is alternately wound outside all the fixed rollers and movable rollers from top to bottom.

[0013] According to some embodiments of the present application, the tensioning mechanism further comprises a guide rail and a sliding block, the guide rail is arranged along the driving direction of the first driving assembly, and the movable plate is arranged on the guide rail through the sliding block.

[0014] According to some embodiments of the present application, the winding mechanism further comprises a second clamping structure and a third driving assembly, the second clamping structure and the third driving assembly are arranged on the front side of the first clamping structure along the transmission path, the third driving assembly is used to drive the second clamping structure to move towards or away from the first clamping structure along the transmission path, and the second clamping structure is used to clamp the metal strip on the transmission path.

[0015] According to some embodiments of the present application, the winding mechanism further comprises a third clamping structure and a fourth driving assembly, the third clamping structure and the fourth driving assembly are arranged on the rear side of the first clamping structure along the transmission path, the fourth driving assembly is used to drive the third clamping structure to move towards or away from the first clamping structure along the transmission path, and the third clamping structure is used to clamp the metal strip on the transmission path.

[0016] According to some embodiments of the present application, the winding mechanism further comprises a guide structure arranged below the first clamping structure, the guide structure comprises a fifth driving assembly and a guide roller, the driving end of the fifth driving assembly is connected with the guide roller, and the fifth driving assembly is used to drive the guide roller to move towards or away from the first clamping structure, and the guide roller is used to push the metal strip released from the third clamping structure to the first clamping structure.

[0017] According to some embodiments of the present application, the conveying mechanism is arranged between the winding mechanism and the flattening mechanism, and is used to convey the electrode sheet wound by the winding mechanism to the flattening mechanism; the conveying mechanism comprises a material receiving upper plate, a material receiving lower plate, a sixth driving assembly and a seventh driving assembly, the driving end of the sixth driving assembly is connected with the material receiving upper plate and the material receiving lower plate, and the sixth driving assembly is used to push the material receiving upper plate and the material receiving lower plate towards the first clamping structure, so that the first clamping structure is located between the material receiving upper plate and the material receiving lower plate, and the seventh driving assembly is arranged beside the material receiving upper plate and the material receiving lower plate and between the material receiving upper plate and the material receiving lower plate, and is used to push the electrode sheet on the material receiving lower plate out.

[0018] According to some embodiments of the present application, the conveying mechanism further comprises an eighth driving assembly arranged above the material receiving upper plate, and the driving end of the eighth driving assembly is connected with the material receiving upper plate, and the eighth driving assembly is used to drive the material receiving upper plate to move towards or away from the material receiving lower plate.

[0019] According to some embodiments of the present application, the flattening mechanism comprises a transfer wheel, a hot-pressing structure, an alignment structure and a moving module. The alignment structure and the moving module are arranged between the transfer wheel and the hot-pressing structure. The transfer wheel is circumferentially spaced with a plurality of first fixing positions, each of which can accommodate a plurality of electrode sheets. The conveying mechanism is used to convey the electrode sheets wound by the winding mechanism to the first fixing positions. The moving module is used to move the electrode sheets on the first fixing positions to the alignment structure and move the electrode sheets on the alignment structure to the hot-pressing structure. The alignment structure is used to align the metal sheets of different layers in the electrode sheets. The hot-pressing structure is used to press and weld the metal sheets of multiple layers in the electrode sheets together.

[0020] According to some embodiments of the present application, the flattening mechanism comprises a preheating wheel and a preheating structure. The preheating wheel and the preheating structure are arranged between the alignment structure and the hot-pressing structure. The preheating wheel is circumferentially spaced with a plurality of second fixing positions. Adjacent two second fixing positions form a first angle with the center of the preheating wheel. The preheating structure is located above one of the second fixing positions and is used to preheat the electrode sheets on the second fixing position. The distance between the alignment structure and the nearest first fixing position is equal to the distance between the alignment structure and the nearest second fixing position. The moving module comprises a first moving structure and a second moving structure. The first moving structure comprises a first grabbing arm and a second grabbing arm which move synchronously. The distance between the first grabbing arm and the second grabbing arm is equal to the distance between the alignment structure and the nearest first fixing position. The first grabbing arm is used to move the electrode sheets on the first fixing position to the alignment structure. The second grabbing arm is used to move the electrode sheets on the alignment structure to the second fixing position. The second moving structure is used to move the electrode sheets on the second fixing position to the hot-pressing structure.

[0021] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Additional aspects and advantages of the present application will become apparent from the following description of the embodiments with reference to the drawings, in which:

[0023] Figure 1 A structural schematic diagram of an electrode sheet manufacturing device provided for an embodiment of the present application is shown in the figure;

[0024] Figure 2 A structural schematic diagram of an electrode sheet manufacturing device provided for another embodiment of the present application is shown in the figure;

[0025] Figure 3 A structural schematic diagram of an electrode sheet manufacturing device provided for another embodiment of the present application is shown in the figure;

[0026] Figure 4A structural schematic diagram of a winding mechanism provided by an embodiment of the present application is shown in the figure.

[0027] Figure 5 A structural schematic diagram of a flattening mechanism provided by an embodiment of the present application is shown in the figure.

[0028] The reference signs are as follows:

[0029] A material feeding roller 110; a fixed plate 211; a fixed roller 212; a movable plate 221; a movable roller 222; a guide slide rail 230; a first clamping structure 310; a second driving assembly 311; a cutting structure 320; a second clamping structure 330; a third driving assembly 331; a third clamping structure 340; a guide structure 350; a fifth driving assembly 351; a material receiving lower plate 411; a material receiving upper plate 412; a sixth driving assembly 413; an eighth driving assembly 420; a seventh driving assembly 430; a transfer wheel disc 510; a first fixed position 511; a hot pressing structure 520; an alignment structure 530; a preheating wheel disc 540; a second fixed position 541; a preheating structure 550; a first material moving structure 561; a second material moving structure 562. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0031] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application, which indicates or implies that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0032] In the description of the present application, if the first, second, etc. are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0033] In the description of the present application, unless otherwise explicitly limited, the words such as arrangement, installation, connection, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0034] In today's era of rapid development of science and technology, electrode sheet as the key component of many advanced technology fields plays a vital role in the battery industry, medical electronics, environmental monitoring sensors and other fields. With the vigorous development of these industries, the market demand for electrode sheet has grown explosively, and the requirements for its quality and production efficiency have risen to an unprecedented height.

[0035] In the feeding link, in the traditional manual feeding mode, manual operation cannot guarantee the stable and uniform output of the metal strip, which makes the tension of the metal strip fluctuate frequently and uncontrollably during transmission. Such uneven tension is extremely easy to cause the metal strip to deviate in the subsequent processing link, thereby affecting the dimensional accuracy of the electrode sheet. Moreover, the feeding difference between different operators or different batches is significant, which leads to poor stability of the electrode sheet quality, seriously affecting the consistency and yield of the product.

[0036] In addition, due to the lack of precise tension control means, the operator cannot accurately control the tension of the metal strip. This not only makes the internal stress state of each batch of electrode sheet different, but also directly reflects on the physical properties and quality of the electrode sheet, resulting in uneven product quality, which cannot meet the modern industry's requirements for high precision and high quality of electrode sheet.

[0037] Based on this, the present application provides an electrode sheet manufacturing method to solve the above technical problems. The technical solutions provided by the present application are described in detail one by one as follows.

[0038] The present application provides an electrode sheet manufacturing device, comprising: a feeding mechanism, a tensioning mechanism, a winding mechanism and a flattening mechanism, the feeding mechanism is used for feeding out a metal strip; the tensioning mechanism is arranged on the rear side of the feeding mechanism along a preset transmission path, comprising a fixed part, a movable part and a first driving assembly, the driving end of the first driving assembly is connected with the movable part, for driving the movable part to approach or move away from the fixed part, the tensioning mechanism is used for receiving the metal strip output from the feeding mechanism, and is wound around the fixed part and the movable part; the winding mechanism is arranged on the rear side of the tensioning mechanism along the transmission path, comprising a cutting structure 320, a first clamping structure 310 and a second driving assembly 311, the first clamping structure 310 is used for clamping the metal strip conveyed from the tensioning mechanism, the driving end of the second driving assembly 311 is connected with the first clamping structure 310, for controlling the first clamping structure 310 to extend or retract, and controlling the first clamping structure 310 to rotate, so as to wind the metal strip into an electrode sheet, the cutting structure 320 is arranged on the front side of the first clamping structure 310 along the transmission path, for cutting the metal strip, so as to separate the completed winding electrode sheet from the metal strip; the flattening mechanism is arranged beside the winding mechanism, for receiving the electrode sheet conveyed from the winding mechanism, and performing hot pressing on the electrode sheet.

[0039] After the device is started, the control system controls the feeding mechanism to deliver the metal strip to the tensioning mechanism, and at the same time, the first driving assembly drives the movable part of the tensioning mechanism to move away from the fixed part, and the metal strip is gradually received between the two and forms an appropriate tension to ensure the stability of the metal strip during transmission. When received to a certain extent, the feeding mechanism stops feeding, and the movable part moves towards the fixed part to smoothly release the tensioned metal strip to the winding mechanism. During the above process, the tension of the metal strip is adjusted by changing the position of the movable part, and the tension is within a controllable range, which ensures uniform tension of the metal strip during feeding and tensioning. When the metal strip is tight, it can resist the interference of these external factors, and the surface flatness can be better maintained. The tight metal strip can be more evenly distributed when winding, and each layer can accurately adhere to the previous layer, thereby ensuring the uniformity of the electrode sheet on the winding structure and improving the overall quality of the electrode sheet. When the metal strip reaches the winding mechanism, the second driving assembly 311 controls the first clamping structure 310 to extend and accurately clamp the metal strip. Then, the second driving assembly 311 drives the first clamping structure 310 to rotate according to the preset program, and the metal strip is wound into an electrode sheet at a stable speed and accurate number of turns. After winding is completed, the cutting structure 320 cuts the metal strip connected to the electrode sheet according to the set position and timing. Finally, the flattening mechanism is used to heat and press the electrode sheet according to the preset temperature and pressure parameters, so as to press the metal strips in different layers of the electrode sheet together, improve the flatness of the electrode sheet, and thereby improve the quality of the electrode sheet production.

[0040] It can be understood that the fixed part includes a fixed plate 211 and n+1 fixed rollers 212, and the fixed rollers 212 are arranged on the fixed plate 211 in the vertical direction. The movable part includes a movable plate 221 and n movable rollers 222, and the movable rollers 222 are arranged on the movable plate 221 in the vertical direction. The uppermost fixed roller 212 in the fixed plate 211 is the feeding end of the tensioning mechanism, and the lowermost fixed roller 212 in the fixed plate 211 is the discharging end of the tensioning mechanism. The metal strip is alternately wound outside all the fixed rollers 212 and movable rollers 222 from top to bottom.

[0041] In the embodiment in the application, the movable plate 221 is provided with three movable rollers 222, and the fixed plate 211 is provided with four fixed rollers 212. The metal strip output from the feeding mechanism is sequentially wound from top to bottom through the first fixed roller 212, the first movable roller 222, the second fixed roller 212, the second movable roller 222, the third fixed roller 212, and the third movable roller 222, and finally output from the fourth fixed roller 212. The metal strip is sequentially wound from top to bottom on the outside of all the fixed rollers 212 and movable rollers 222 in an alternating manner. When the movable roller 222 of the movable part is driven by the first driving assembly to approach or move away from the fixed roller 212 of the fixed part, the path length of the metal strip in the tensioning mechanism can be accurately changed, so that the adjustment of the tension of the metal strip is more accurate, and problems such as deformation of the metal strip caused by excessive tension or relaxation, deviation caused by insufficient tension can be effectively avoided, thereby ensuring the stability and quality of the metal strip in the subsequent processing process. At the same time, the fixed rollers 212 and movable rollers 222 are arranged in a vertical direction, which can effectively tension the metal strip in a limited planar space, save the horizontal space of the equipment, and make the structure of the entire electrode sheet manufacturing equipment more compact.

[0042] It can be understood that the tensioning mechanism further comprises a guide rail 230 and a sliding block. The guide rail 230 is arranged along the driving direction of the first driving assembly, and the movable plate 221 is arranged on the guide rail 230 through the sliding block. The arrangement of the guide rail 230 and the sliding block provides accurate guidance for the movement of the movable plate 221. When the first driving assembly drives the movable plate 221 to approach or move away from the fixed part, the sliding block moves along the guide rail 230, which can ensure that the movable plate 221 moves in a predetermined straight line direction. Precise motion path control helps to accurately adjust the distance between the movable roller 222 and the fixed roller 212 in the tensioning mechanism, thereby more accurately controlling the tension of the metal strip. The movement of the movable plate 221 is more stable under the support of the guide rail 230 and the sliding block.

[0043] It can be understood that the winding mechanism further comprises a second clamping structure 330 and a third driving assembly 331. The second clamping structure 330 and the third driving assembly 331 are arranged on the front side of the first clamping structure 310 along the transmission path. The third driving assembly 331 is used to drive the second clamping structure 330 to approach or move away from the first clamping structure 310 along the transmission path, and the second clamping structure 330 is used to clamp the metal strip on the transmission path.

[0044] When the feeding mechanism feeds the metal strip to the tensioning mechanism, the second clamping structure 330 clamps the metal strip to prevent the metal strip from rebounding at the position of the discharge end when being conveyed to the tensioning mechanism. Then, the feeding mechanism is started and the metal strip is discharged at a preset first speed, while the movable plate 221 is controlled to move at a preset second speed away from the fixed plate 211, and the metal strip is sequentially wound outside all the fixed rollers 212 and movable rollers 222 from top to bottom. With the movement of the movable plate 221, the metal strip is gradually accumulated between the fixed rollers 212 and the movable rollers 222, and in this process, it can be ensured that the metal strip is not too tight or too loose during storage, effectively avoiding wrinkles or other quality problems caused by improper tension, and providing a good premise for subsequent winding operation.

[0045] When the tensioning mechanism feeds the metal strip to the winding mechanism, the second clamping structure 330 pulls the clamped metal strip to the position of the first clamping structure 310 through the third driving assembly 331, and then the first clamping structure 310 extends to clamp the metal strip. The second clamping structure 330 is opened and retracted to the initial position through the third driving assembly 331. In this process, the movable plate 221 gradually approaches the fixed plate 211 to discharge the accumulated metal strip.

[0046] It can be understood that the winding mechanism further comprises a third clamping structure 340 and a fourth driving assembly, the third clamping structure 340 and the fourth driving assembly are arranged on the rear side of the first clamping structure 310 along the transmission path, the fourth driving assembly is used to drive the third clamping structure 340 to approach or move away from the first clamping structure 310 along the transmission path, and the third clamping structure 340 is used to clamp the metal strip on the transmission path. The main function of the third clamping structure 340 is to clamp the metal strip, and the metal strip clamped by the third clamping structure 340 can maintain stable tension and position when the first clamping structure 310 winds, reducing the shaking and displacement of the metal strip during winding, which helps the first clamping structure 310 to wind with more uniform number of turns and tightness, thereby improving the winding quality of the electrode sheet. When the tensioning mechanism feeds the metal strip to the winding mechanism, the second clamping structure 330 pulls the clamped metal strip to the position of the first clamping structure 310 through the third driving assembly 331, the third clamping structure 340 moves to the direction of the first clamping structure 310 through the fourth driving assembly, so as to catch the metal strip transmitted by the second clamping structure 330, and then the third clamping structure 340 pulls back the metal strip to provide space for the first clamping structure 310 to extend, and then the first clamping structure 310 extends to clamp the metal strip and winds. The third clamping structure 340 cooperates with the second clamping structure 330 to accurately transmit the metal strip when the tensioning mechanism feeds the metal strip to the winding mechanism, so as to ensure that the metal strip accurately reaches the position of the first clamping structure 310.

[0047] It can be understood that the winding mechanism further comprises a guide structure 350 arranged below the first clamping structure 310, the guide structure 350 comprising a fifth driving assembly 351 and a guide roller, the driving end of the fifth driving assembly 351 being connected with the guide roller, for driving the guide roller to move close to or away from the first clamping structure 310, and the guide roller is used to push the metal strip released from the third clamping structure 340 to the first clamping structure 310. When the moving distance of the movable plate 221 reaches the preset distance threshold, the winding of the electrode sheet has completed a part, at this time, the movable plate 221 is controlled to stop moving, so as to avoid the interference of continuous feeding on the subsequent operation. At the same time, the third clamping structure 340 is controlled to be opened, so that the remaining metal strip connected with the electrode sheet can move freely. The guide structure 350 is controlled to move towards the first clamping structure 310 by the sixth driving assembly 413, and the guide structure 350 will interact with the metal strip released from the third clamping structure 340, and push the metal strip towards the first clamping structure 310, so as to ensure that the metal strip can move towards the first clamping structure 310 accurately, and will not cause the distortion or deformation of the metal strip. Under the pushing of the guide structure 350, the metal strip released from the third clamping structure 340 is gradually wound on the electrode sheet under the rotating action of the first clamping structure 310, which improves the production quality of the electrode sheet.

[0048] It can be understood that the electrode sheet manufacturing device provided by the present application further comprises a conveying mechanism arranged between the winding mechanism and the flattening mechanism, for conveying the electrode sheet wound by the winding mechanism to the flattening mechanism; the conveying mechanism comprises a material receiving upper plate 412, a material receiving lower plate 411, a sixth driving assembly 413 and a seventh driving assembly 430, the driving end of the sixth driving assembly 413 being connected with the material receiving upper plate 412 and the material receiving lower plate 411, for pushing the material receiving upper plate 412 and the material receiving lower plate 411 towards the first clamping structure 310, so that the first clamping structure 310 is located between the material receiving upper plate 412 and the material receiving lower plate 411, and the seventh driving assembly 430 is arranged beside the material receiving upper plate 412 and the material receiving lower plate 411 and between the material receiving upper plate 412 and the material receiving lower plate 411, for pushing the electrode sheet on the material receiving lower plate 411 out.

[0049] When the winding mechanism completes the winding of the electrode sheet, the sixth driving assembly 413 is started to drive the receiving upper plate 412 and the receiving lower plate 411 to move towards the first clamping structure 310. During this process, the receiving upper plate 412 and the receiving lower plate 411 gradually approach the first clamping structure 310, and the space between them can accommodate the first clamping structure 310 and the electrode sheet. When the first clamping structure 310 is located between the receiving upper plate 412 and the receiving lower plate 411, the first clamping structure 310 releases the electrode sheet, and the electrode sheet falls on the receiving lower plate 411. After the electrode sheet is placed on the receiving lower plate 411, the sixth driving assembly 413 drives the receiving upper plate 412 and the receiving lower plate 411 to move together to return to the initial position. The seventh driving assembly 430 pushes the electrode sheet on the receiving lower plate 411 out, and the pushed-out electrode sheet can fall onto the conveyor belt to convey the electrode sheet to the flattening mechanism.

[0050] It can be understood that the conveying mechanism further comprises an eighth driving assembly 420, which is arranged above the receiving upper plate 412, and the driving end of the eighth driving assembly 420 is connected with the receiving upper plate 412 for driving the receiving upper plate 412 to approach or move away from the receiving lower plate 411. After the electrode sheet is conveyed between the receiving upper plate 412 and the receiving lower plate 411, the electrode sheet can have some uneven conditions. The eighth driving assembly 420 drives the receiving upper plate 412 to slowly move downward and gradually approach the receiving lower plate 411, and the receiving upper plate 412 applies a certain pressure to the electrode sheet to flatten the electrode sheet. During the flattening process, the uneven problem of the electrode sheet generated during the winding process can be effectively eliminated, and the flatness of the electrode sheet is improved.

[0051] It can be understood that the flattening mechanism includes a transfer disc 510, a hot pressing structure 520, an alignment structure 530 and a transfer module, the alignment structure 530 and the transfer module are arranged between the transfer disc 510 and the hot pressing structure 520, the transfer disc 510 is circumferentially spaced apart to form a plurality of first fixed positions 511, each first fixed position 511 can accommodate a plurality of electrode sheets, the conveying mechanism is used to convey the electrode sheets wound by the winding mechanism to the first fixed position 511, the transfer module is used to move the electrode sheets on the first fixed position 511 to the alignment structure 530, and move the electrode sheets on the alignment structure 530 to the hot pressing structure 520, the alignment structure 530 is used to align the metal sheets of different layers in the electrode sheets, and the hot pressing structure 520 is used to press and weld the metal sheets of multiple layers in the electrode sheets together. The separated electrode sheets are sequentially transferred to the first fixed positions 511 of the transfer disc 510 of the flattening mechanism, and the first fixed positions 511 provide a storage position for the electrode sheets. Then, the transfer module is controlled to take out the electrode sheets from the first fixed positions 511 and transfer them to the alignment structure 530, and the alignment structure 530 is controlled to extrude the side edges of the electrode sheets, so that the metal sheets of different layers in the electrode sheets are aligned, and the quality of the electrode sheets after press welding is ensured. The transfer module is controlled again to take out the electrode sheets after alignment and flattening from the alignment structure 530 and transfer them to the hot pressing structure 520, and the hot pressing structure 520 is controlled to press and weld the metal sheets of multiple layers in the electrode sheets together to form the final electrode sheets.

[0052] It can be understood that the flattening mechanism includes a preheating disc 540 and a preheating structure 550, the preheating disc 540 and the preheating structure 550 are arranged between the alignment structure 530 and the hot pressing structure 520, the preheating disc 540 is circumferentially spaced apart to form a plurality of second fixed positions 541, adjacent two second fixed positions 541 form a first angle with the center of the preheating disc 540, the preheating structure 550 is located above one of the second fixed positions 541 and is used to preheat the electrode sheets on the second fixed position 541, the distance between the alignment structure 530 and the nearest first fixed position 511 is equal to the distance between the alignment structure 530 and the nearest second fixed position 541, and the transfer module includes a first material transfer structure 561 and a second material transfer structure 562, the first material transfer structure 561 includes a first grabbing arm and a second grabbing arm that move synchronously, the distance between the first grabbing arm and the second grabbing arm is equal to the distance between the alignment structure 530 and the nearest first fixed position 511, the first grabbing arm is used to move the electrode sheets on the first fixed position 511 to the alignment structure 530, and the second grabbing arm is used to move the electrode sheets on the alignment structure 530 to the second fixed position 541, and the second material transfer structure 562 is used to move the electrode sheets on the second fixed position 541 to the hot pressing structure 520.

[0053] The first gripping arm and the second gripping arm of the first material moving structure 561 move synchronously. Since the distance between the first gripping arm and the second gripping arm is equal to the distance between the alignment structure 530 and the nearest first fixed position 511, and the distance between the alignment structure 530 and the nearest first fixed position 511 is equal to the distance between the alignment structure 530 and the nearest second fixed position 541, when the first gripping arm is taking material at the first fixed position 511, the second gripping arm is just at the position of the alignment structure 530, so the second gripping arm can also take material at the position of the alignment structure 530. In addition, when the first gripping arm is at the position of the alignment structure 530, the second gripping arm is just at the second fixed position 541, so when the first gripping arm is putting material at the position of the alignment structure 530, the second gripping arm can also put material at the position of the second fixed position 541. The synchronous operation ensures the full use of each part of the device, the smooth transfer of the material avoids the blockage or stagnation in the production process, ensures the continuity of the whole electrode plate manufacturing process, avoids the idle of the device caused by waiting for one gripping arm to complete the operation before the other gripping arm starts to work, and improves the production efficiency of the electrode plate.

[0054] The above describes the embodiments of the present application in detail in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. An electrode tab manufacturing apparatus characterized by comprising: The application relates to a metal strip winding device. The device comprises a feeding mechanism for feeding a metal strip, a tensioning mechanism arranged at the rear side of the feeding mechanism along a preset transmission path, a winding mechanism arranged at the rear side of the tensioning mechanism along the transmission path, and a flattening mechanism arranged at the side of the winding mechanism. The tensioning mechanism comprises a fixed part, a movable part and a first driving assembly, the driving end of the first driving assembly is connected with the movable part, the first driving assembly is used for driving the movable part to move close to or away from the fixed part, the tensioning mechanism is used for receiving the metal strip output from the feeding mechanism and winding the metal strip around the fixed part and the movable part. The winding mechanism comprises a cutting structure, a first clamping structure and a second driving assembly, the first clamping structure is used for clamping the metal strip conveyed from the tensioning mechanism, the driving end of the second driving assembly is connected with the first clamping structure, the second driving assembly is used for controlling the first clamping structure to extend or retract and controlling the first clamping structure to rotate so as to wind the metal strip into an electrode sheet, the cutting structure is arranged at the front side of the first clamping structure along the transmission path and is used for cutting the metal strip to separate the completed electrode sheet from the metal strip. The flattening mechanism is arranged at the side of the winding mechanism and is used for receiving the electrode sheet conveyed from the winding mechanism and performing hot pressing on the electrode sheet.

2. The electrode sheet manufacturing apparatus according to claim 1, characterized by, The fixed part comprises a fixed plate and n+1 fixed rollers, the fixed rollers are arranged on the fixed plate in the vertical direction, the movable part comprises a movable plate and n movable rollers, the movable rollers are arranged on the movable plate in the vertical direction, the uppermost fixed roller in the fixed plate is the feeding end of the tensioning mechanism, the lowermost fixed roller in the fixed plate is the discharging end of the tensioning mechanism, and the metal strip is wound around the outer sides of all the fixed rollers and the movable rollers in turn from top to bottom.

3. The electrode sheet manufacturing apparatus according to claim 2, characterized by The tensioning mechanism further comprises a guide slide rail and a sliding block, the guide slide rail is arranged along the driving direction of the first driving assembly, and the movable plate is arranged on the guide slide rail through the sliding block.

4. The electrode sheet manufacturing apparatus according to claim 1, wherein The winding mechanism further comprises a second clamping structure and a third driving assembly, the second clamping structure and the third driving assembly are arranged at the front side of the first clamping structure along the transmission path, and the third driving assembly is used for driving the second clamping structure to move close to or away from the first clamping structure along the transmission path, and the second clamping structure is used for clamping the metal strip on the transmission path.

5. The electrode sheet manufacturing apparatus according to claim 4, characterized by The winding mechanism further comprises a third clamping structure and a fourth driving assembly, the third clamping structure and the fourth driving assembly are arranged at the rear side of the first clamping structure along the transmission path, the fourth driving assembly is used for driving the third clamping structure to move close to or away from the first clamping structure along the transmission path, and the third clamping structure is used for clamping the metal strip on the transmission path.

6. The electrode sheet manufacturing apparatus according to claim 5, wherein The winding mechanism further comprises a guide structure arranged below the first clamping structure, the guide structure comprising a fifth driving assembly and a guide roller, a driving end of the fifth driving assembly being connected with the guide roller, for driving the guide roller to move close to or away from the first clamping structure, the guide roller being used for pushing the metal strip released from the third clamping structure to the first clamping structure.

7. The electrode sheet manufacturing apparatus according to claim 1, wherein The conveying mechanism is arranged between the winding mechanism and the flattening mechanism, for conveying the electrode sheet wound by the winding mechanism to the flattening mechanism; the conveying mechanism comprises a material receiving upper plate, a material receiving lower plate, a sixth driving assembly and a seventh driving assembly, a driving end of the sixth driving assembly being connected with the material receiving upper plate and the material receiving lower plate, for pushing the material receiving upper plate and the material receiving lower plate towards the first clamping structure, so that the first clamping structure is located between the material receiving upper plate and the material receiving lower plate, the seventh driving assembly being arranged beside and between the material receiving upper plate and the material receiving lower plate, for pushing the electrode sheet on the material receiving lower plate out.

8. The electrode sheet manufacturing apparatus according to claim 7, wherein The conveying mechanism further comprises an eighth driving assembly arranged above the material receiving upper plate, a driving end of the eighth driving assembly being connected with the material receiving upper plate, for driving the material receiving upper plate to move close to or away from the material receiving lower plate.

9. The electrode sheet manufacturing apparatus according to claim 7, wherein The flattening mechanism comprises a transfer disc, a hot pressing structure, an alignment structure and a transfer module, the alignment structure and the transfer module being arranged between the transfer disc and the hot pressing structure, the transfer disc being provided with a plurality of first fixing positions at intervals in the circumferential direction, each of the first fixing positions being capable of accommodating a plurality of electrode sheets, the conveying mechanism being used for conveying the electrode sheet wound by the winding mechanism to the first fixing position, the transfer module being used for moving the electrode sheet on the first fixing position to the alignment structure, and moving the electrode sheet on the alignment structure to the hot pressing structure, the alignment structure being used for aligning the metal sheets in different layers of the electrode sheet, and the hot pressing structure being used for pressure welding the metal sheets in different layers of the electrode sheet together.

10. The electrode sheet manufacturing apparatus according to claim 9, wherein The flattening mechanism comprises a preheating wheel disc and a preheating structure, the preheating wheel disc and the preheating structure are arranged between the alignment structure and the hot-pressing structure, a plurality of second fixing positions are circumferentially spaced on the preheating wheel disc, adjacent two second fixing positions form a first angle with the center of the preheating wheel disc, the preheating structure is located above one of the second fixing positions and is used for preheating the electrode sheet on the second fixing position, the distance between the alignment structure and the nearest first fixing position is equal to the distance between the alignment structure and the nearest second fixing position, the transfer module comprises a first material moving structure and a second material moving structure, the first material moving structure comprises a first grabbing arm and a second grabbing arm which move synchronously, the distance between the first grabbing arm and the second grabbing arm is equal to the distance between the alignment structure and the nearest first fixing position, the first grabbing arm is used for moving the electrode sheet on the first fixing position to the alignment structure, the second grabbing arm is used for moving the electrode sheet on the alignment structure to the second fixing position, and the second material moving structure is used for moving the electrode sheet on the second fixing position to the hot-pressing structure.

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