A battery cell die-cutting equipment

Abstract

This invention discloses a battery cell die-cutting equipment, comprising: a frame having a first end located upstream and a second end located downstream; two electrode unwinding devices, both located at the first end of the frame; two first conveying devices, both located at the second end of the frame to convey positive and negative electrode sheets downstream along a first direction; two chamfering devices, both located on the frame and between the electrode unwinding devices and the first conveying devices; two cutting devices, both located on the frame and between the chamfering devices and the first conveying devices; and a dust removal device located at the cutting devices. The technical solution of this invention aims to improve the yield of battery cell electrode die-cutting.

Description

Technical Field

[0001] This invention relates to the field of battery cell technology, and in particular to a battery cell die-cutting device. Background Technology

[0002] In the lithium battery manufacturing process, battery electrodes need to be die-cut from electrode rolls into individual electrodes. This die-cutting process requires die-cutting equipment. During electrode preparation, metal cutters or lasers are typically used to slit the product to achieve a predetermined width. After slitting, dust residue remains on the product, which can affect battery performance and reduce cell production yield. Summary of the Invention

[0003] The main objective of this invention is to provide a battery cell die-cutting device, which aims to improve the yield of battery cell electrode die-cutting.

[0004] To achieve the above objectives, the present invention provides a battery cell die-cutting apparatus comprising:

[0005] A frame for support on the ground, the frame extending along a first direction, and in the first direction, the frame having a first end located upstream and a second end located downstream;

[0006] The electrode unwinding device is provided in two parts, which are located at the first end of the frame. The two electrode unwinding devices unwind and cut the electrode strips of the positive and negative electrodes to form electrode tabs respectively.

[0007] The first conveying device is provided in two, with the two first conveying devices located at the second end of the frame to convey positive and negative electrode sheets downstream along the first direction;

[0008] Two chamfering devices are provided. The two chamfering devices are located on the frame and between the electrode unwinding device and the first conveying device. The two chamfering devices receive the electrode strip from the electrode unwinding device and chamfer it.

[0009] Two cutting devices are provided, each located on the frame and between the chamfering device and the first conveying device. Each cutting device receives the electrode strip from the chamfering device and cuts it into positive and negative electrode sheets.

[0010] A dust removal device is provided on the cutting device, and the dust removal device is used to clean the waste and foreign objects on the cutting device and the positive and negative electrode sheets.

[0011] Optionally, the cutting device includes:

[0012] A first fixed frame is disposed on the frame;

[0013] The drive roller is rotatably mounted on the first fixed frame;

[0014] The driven roller is rotatably positioned above the driving roller, and the driving roller and the driven roller are in rolling connection with the upper and lower end faces of the electrode strip to convey the electrode strip along the first direction;

[0015] A lifting mechanism, disposed on the first fixed frame and drivenly connected to the driven roller, drives the driven roller to move closer to or away from the driving roller; and

[0016] The cutting mechanism includes a drive assembly and a cutting tool connected to the drive assembly. The drive assembly is fixed to the frame and driven to the cutting tool to drive the cutting tool to move up and down to cut the electrode strip.

[0017] Optionally, the dust removal device includes:

[0018] A first dust removal component is located below the drive roller. The first dust removal component contacts the outer peripheral wall of the drive roller to remove and collect impurities on the drive roller.

[0019] The second dust removal component is located below the cutting mechanism. The top of the second dust removal component is provided with a discharge port, which is used to receive the waste generated after the electrode strip is cut.

[0020] Optionally, the first dust removal component includes:

[0021] A scraper is disposed below the drive roller. One end of the scraper is fixed to the first fixed frame, and the other end of the scraper contacts the outer peripheral wall of the drive roller to scrape off impurities on the drive roller.

[0022] A dust collection shell is located below the scraper, and the dust collection shell has a dust collection chamber with an opening at the top, which is used to collect impurities on the drive roller.

[0023] Optionally, the electrode unwinding device includes:

[0024] The second fixing frame is located at the first end of the frame;

[0025] An unwinding mechanism is rotatably mounted on the second fixed frame. The unwinding mechanism is used to store the electrode strip and unwind the electrode strip.

[0026] A laser cutting mechanism is provided on the second fixed frame, and the laser cutting mechanism is used to cut the electrode strip to form electrode tabs;

[0027] A first dust removal mechanism, disposed on the second fixed frame and tactilely connected to the electrode strip, is used to adsorb foreign matter from the surface of the electrode strip; and

[0028] A feeding mechanism is located below the laser cutting mechanism, and the feeding mechanism is used to receive the waste generated from the cutting of the electrode strip.

[0029] Optionally, the first dust removal mechanism includes:

[0030] The support frame is located on the second fixed frame;

[0031] A dust collection roller is rotatably mounted on the support frame and is tumbledly connected to the electrode strip. The dust collection roller has a first dust collection chamber inside and a dust collection hole is opened on the outer peripheral wall of the dust collection roller. One end of the dust collection hole is connected to the first dust collection chamber, and the other end of the dust collection hole is used to abut against the end face of the electrode strip.

[0032] The first suction pipe is connected to the first dust collection chamber to discharge the gas in the first dust collection chamber and create a negative pressure.

[0033] Optionally, the discharge mechanism includes:

[0034] A conveyor belt is disposed below the laser cutting mechanism and along the conveying direction of the electrode material strip. The conveyor belt has a first end that contacts the electrode material strip and a second end that is spaced apart from the electrode material strip. The conveyor belt adsorbs the waste material from the first end and conveys it to the second end.

[0035] A brush, disposed on the second fixing frame, the brush contacting the second end to scrape the waste away from the second end; and

[0036] A dust collection box is located below the brush to collect the waste material.

[0037] Optionally, the first conveying device includes:

[0038] A first conveyor belt is provided on the frame, and the first conveyor belt adsorbs the bottom surface of the positive and negative electrode sheets and conveys them to the second end;

[0039] A second conveyor belt is disposed on the frame, downstream of the first conveyor belt, and partially overlaps with the first conveyor belt to adsorb the top surfaces of the positive and negative electrode sheets from the first conveyor belt and convey them to the second end;

[0040] Two dust collection components are provided, which are respectively disposed on the first conveyor belt and the second conveyor belt to remove dust from the bottom and top surfaces of the positive and negative electrode sheets;

[0041] Two iron removers are provided, one on the first conveyor belt and the other on the second conveyor belt, to adsorb iron filings from the first conveyor belt and the other on the second conveyor belt; and

[0042] A size detection component is disposed above the first conveyor belt, and the size detection component is used to detect the external dimensions of the positive and negative electrode sheets passing by.

[0043] Optionally, the first conveying device further includes a lifting cylinder, the lifting cylinder including a cylinder body and a piston rod disposed on the cylinder body, the cylinder body being fixedly connected to the frame, the piston rod extending and retracting in the vertical direction, and the end of the piston rod away from the cylinder body being connected to the second conveyor belt to drive the second conveyor belt to move in the vertical direction.

[0044] Optionally, the cell die-cutting equipment further includes:

[0045] A second conveying device is disposed at the second end of the frame and conveys the positive and negative electrode sheets along the first direction;

[0046] A waste container is disposed downstream of the second conveying device along the first direction, and the waste container receives the waste discharged by the second conveying device.

[0047] Compared with the prior art, in the technical solution of this invention, the battery cell die-cutting equipment includes a frame supported on the ground and extending along a first direction, wherein the frame has a first end located upstream and a second end located downstream; the battery cell die-cutting equipment also includes an electrode unwinding device, which is located at the first end of the frame and has two sets, which respectively unwind the rolls of positive electrode and negative electrode and pre-cut them to form the electrode tab structure of the electrode; a first conveying device is provided at the second end of the frame, which has two sets and corresponds to the two electrode unwinding devices respectively, and the first conveying devices convey the die-cut positive electrode and negative electrode downstream along the first direction for subsequent processing. The device includes two chamfering devices located between the first conveying device and the electrode unwinding device. These two chamfering devices are used to chamfer the passing electrode rolls. Additionally, the cell die-cutting equipment includes a cutting device located between the chamfering device and the first conveying device. This cutting device cuts the passing rolls to form independent positive and negative electrode sheets. A dust removal device is installed on the cutting device to clean up waste generated during the cutting process and remove foreign objects from the cutting device. This improves the cleanliness of the cutting device and the positive and negative electrode sheets, thereby reducing the possibility of foreign objects entering the final cell product and increasing the production yield of the cell in the die-cutting stage. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the structure of an embodiment of the battery cell die-cutting equipment of the present invention;

[0050] Figure 2 This is a schematic diagram of the cutting device in the battery cell die-cutting equipment of the present invention;

[0051] Figure 3 This is a schematic diagram of the structure of the first dust removal component and the active roller in the battery cell die-cutting equipment of the present invention;

[0052] Figure 4 This is a schematic diagram of the electrode unwinding device in the battery cell die-cutting equipment of the present invention;

[0053] Figure 5 This is a schematic diagram of the first dust removal mechanism in the battery cell die-cutting equipment of the present invention;

[0054] Figure 6 This is a schematic diagram of the material feeding mechanism in the battery cell die-cutting equipment of the present invention;

[0055] Figure 7 This is a schematic diagram of the structure of the first conveying device in the battery cell die-cutting equipment of the present invention.

[0056] Explanation of icon numbers:

[0057]

[0058] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0060] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0063] To improve the yield of battery cell electrode die-cutting, this technical solution proposes a battery cell die-cutting equipment, including:

[0064] A frame 100 for support on the ground extends along a first direction and has a first end located upstream and a second end located downstream in the first direction;

[0065] Two electrode unwinding devices 200 are provided. The two electrode unwinding devices 200 are located at the first end of the frame 100. The two electrode unwinding devices 200 respectively unwind and cut the electrode material strips of positive and negative electrode sheets to form electrode ears.

[0066] Two first conveying devices 300 are provided, and the two first conveying devices 300 are located at the second end of the frame 100 to convey positive and negative electrode sheets downstream along the first direction;

[0067] Two chamfering devices 400 are provided. The two chamfering devices 400 are located on the frame 100 and between the electrode unwinding device 200 and the first conveying device 300. The two chamfering devices 400 receive the electrode strip from the electrode unwinding device 200 and chamfer it.

[0068] Two cutting devices 500 are provided, located on the frame 100 and between the chamfering device 400 and the first conveying device 300. Each cutting device 500 receives electrode strip material from the chamfering device 400 and cuts it into positive and negative electrode sheets.

[0069] A dust removal device 600 is installed on the cutting device 500. The dust removal device 600 is used to clean the waste and foreign objects on the cutting device 500 and the positive and negative electrode sheets.

[0070] Compared with the prior art, in the technical solution of this invention, the battery cell die-cutting equipment includes a frame 100, which is supported on the ground and extends along a first direction. In this first direction, the frame 100 has a first end located upstream and a second end located downstream. The battery cell die-cutting equipment also includes an electrode unwinding device 200, which is located at the first end of the frame 100. Two sets of the electrode unwinding device 200 are provided, respectively unwinding the rolls of positive and negative electrode sheets and pre-cutting them to form electrode tab structures. At the second end of the frame 100, a first conveying device 300 is provided. Two first conveying devices 300 are provided, each corresponding to one of the two electrode unwinding devices 200. The first conveying devices 300 transport the die-cut positive and negative electrode sheets downstream along the first direction for subsequent processes. A chamfering device 400 is provided between the conveying device 300 and the electrode unwinding device 200. Two chamfering devices 400 are provided to chamfer the passing electrode rolls. In addition, the cell die-cutting equipment also includes a cutting device 500, which is located between the chamfering device 400 and the first conveying device 300. The cutting device 500 cuts the passing rolls to form independent positive and negative electrodes. A dust removal device 600 is provided on the cutting device 500. The dust removal device 600 can clean up the waste generated by the cutting device 500 during the cutting process and remove foreign objects from the cutting device 500, thereby improving the cleanliness of the cutting device 500 and the positive and negative electrodes, reducing the possibility of foreign objects entering the final cell product, and improving the production yield of the cell in the die-cutting section.

[0071] Specifically, such as Figures 1 to 7In this embodiment, the cell die-cutting equipment includes a frame 100, which includes a plurality of vertically placed flat plate structures extending along a first direction, which is the production and processing direction of the electrode sheets. In the first direction, the frame 100 has a first end located upstream and a second end located downstream. An electrode sheet unwinding device 200 is provided at the first end of the frame 100. There are two electrode sheet unwinding devices 200, which are arranged on both sides of the front end of the frame 100, and respectively unwind the positive and negative electrode sheet rolls. Each electrode unwinding device 200 can simultaneously unwind two electrode rolls, allowing for the pre-storage of one roll while producing another. Once one roll is finished, production can switch to the next. Finished rolls can be replaced without disrupting production. Two first conveying devices 300 are located at the second end of the frame 100, corresponding to the two electrode unwinding devices 200 to convey positive and negative electrode sheets downstream along a first direction. Two chamfering devices 400 are located between the electrode unwinding devices 200 and the first conveying devices 300, corresponding to the two electrode unwinding devices 200. The electrode rolls released from the electrode unwinding devices 200 enter the chamfering devices 400 for edge chamfering to prevent edge damage during subsequent lamination processes. Sharp edges can scratch the diaphragm, causing defects. Additionally, a cutting device 500 is provided between the chamfering device 400 and the first conveying device 300. Two cutting devices 500 are provided, each corresponding to one of the two chamfering devices 400. After the electrode roll is chamfered, it can be cut into individual positive and negative electrode sheets by the cutting device 500 and conveyed downstream via the first conveying device 300. Furthermore, to improve the yield of the electrode sheets after die-cutting, a dust removal device 600 is provided on the cutting device 500. This dust removal device 600 can absorb the waste generated during the cutting process and the dust on the cutting device 500 during the cutting of the roll into positive and negative electrode sheets, thereby improving the surface cleanliness of the positive and negative electrode sheets after cutting. This reduces the possibility of internal contamination of the battery cell during the processing of the positive and negative electrode sheets into the battery cell, which is beneficial for improving the yield of battery cell production.

[0072] Furthermore, the cutting device 500 includes:

[0073] The first fixed frame 510 is mounted on the frame 100;

[0074] The drive roller 520 is rotatably mounted on the first fixed frame 510;

[0075] The driven roller 530 is rotatably positioned above the driving roller 520. The driving roller 520 and the driven roller 530 are rolledly connected to the upper and lower end faces of the electrode strip to convey the electrode strip along the first direction.

[0076] A lifting mechanism 540, mounted on the first fixed frame 510 and drivenly connected to the driven roller 530, drives the driven roller 530 to move closer to or further away from the driving roller 520; and

[0077] The cutting mechanism 550 includes a drive assembly and a cutting tool connected to the drive assembly. The drive assembly is fixed to the frame 100 and is driven to drive the cutting tool to move up and down to cut the electrode strip.

[0078] like Figure 1 and Figure 2 In this embodiment, the cutting device 500 includes a first fixing frame 510, which is fixed to the frame 100. A drive roller 520 is rotatably connected to the first fixing frame 510. A drive motor is also provided on the frame 100, and the motor shaft of the drive motor is connected to the drive roller 520. Driven by the drive motor, the drive roller 520 can rotate in a first direction. A driven roller 530 is provided above the drive roller 520. The driven roller 530 is connected to the first fixing frame 510 via a lifting mechanism 540. The driven roller 530 is rotatably connected to the lifting mechanism 540, and its rotation direction is the same as that of the drive roller 520. The lifting mechanism 540 can... The lifting mechanism 540 is a telescopic device such as an electric cylinder or hydraulic cylinder. The fixed end of the lifting mechanism 540 is fixedly connected to the frame 100, and the telescopic end extends vertically towards each other and is fixedly connected to the driven roller 530. Through the lifting movement of the lifting mechanism 540, the driven roller 530 can be driven to move closer to or away from the driving roller 520, thereby adjusting the gap between the driving roller 520 and the driven roller 530, and thus achieving the adaptation of electrode strips of different thicknesses. In actual operation, when the electrode strip reaches the position of the driving roller 520, the driven roller 530 descends and cooperates with the driving roller 520 to clamp the electrode strip on opposite sides. Then the driving roller 520 rotates, driving the electrode strip to be conveyed along the first direction. In addition, the cutting device 500 also includes a cutting mechanism 550. The cutting device is located on the top of the first fixed frame 510. When the electrode strip moves along the first direction under the drive of the active roller 520, the cutting device can perform reciprocating lifting and lowering motion in the vertical direction and cut the electrode strip into individual independent electrodes.

[0079] Furthermore, the dust removal device 600 includes:

[0080] The first dust removal component is located below the drive roller 520. The first dust removal component contacts the outer peripheral wall of the drive roller 520 to remove and collect impurities on the drive roller 520.

[0081] The second dust removal component is located below the cutting mechanism 550. The top of the second dust removal component is provided with a discharge port, which is used to receive the waste generated after the electrode strip is cut.

[0082] Furthermore, the first dust removal component includes:

[0083] A scraper 611 is located below the drive roller 520. One end of the scraper 611 is fixed to the first fixed frame 510, and the other end of the scraper 611 contacts the outer peripheral wall of the drive roller 520 to scrape off impurities on the drive roller 520.

[0084] The dust collection shell 612 is located below the scraper 611. The dust collection shell 612 has a dust collection chamber with an opening at the top, which is used to collect impurities on the drive roller 520.

[0085] like Figure 2 and Figure 3 In this embodiment, the dust removal device 600 includes a first dust removal component and a second dust removal component. The first dust removal component is located below the active roller 520 and contacts the outer peripheral wall of the active roller 520. When the active roller 520 rotates, the first dust removal component scrapes the outer peripheral wall of the active roller 520 to remove impurities from the active roller 520. In this embodiment, the first dust removal component includes a scraper 611 and a dust collection shell 612. The scraper 611 is made of urethane rubber and extends parallel to the active roller 520. One end of the scraper 611 is connected to the first fixing frame 510, and the other end of the scraper 611 contacts the outer peripheral wall of the active roller 520. When the active roller 520 rotates, the scraper 611 rubs against the outer peripheral wall of the active roller 520 and scrapes away impurities from the active roller 520. Below the scraper 611, there is also a... A dust collection shell 612 is provided, which has a dust collection chamber with an open top. The dust collection shell 612 is connected to a negative pressure generating device. Impurities scraped off by the active roller 520 can be sucked into the dust collection shell 612 and discharged. In addition, the active roller 520 can be made of a material with a certain degree of viscosity. In this way, when the electrode strip passes through the active roller 520, impurities on the surface of the electrode strip can be absorbed by the active roller 520 and then removed by the scraper 611. This can improve the cleanliness of the electrode strip surface, thereby improving the production yield of the battery cell. In addition, a second dust removal component can be provided below the cutting mechanism 550. The second dust removal component can be a structure similar to the dust collection shell 612. After the cutter cuts the electrode strip, the waste generated by the cutting can be sucked away by the second dust removal component, which also helps to improve the production yield of the battery cell.

[0086] Furthermore, the electrode unwinding device 200 includes:

[0087] The second fixed frame 210 is located at the first end of the frame 100;

[0088] The unwinding mechanism 220 is rotatably mounted on the second fixed frame 210. The unwinding mechanism 220 is used to store the electrode strip and unwind the electrode strip.

[0089] A laser cutting mechanism 230 is mounted on the frame 100. The laser cutting mechanism 230 is used to cut electrode strips to form electrode tabs.

[0090] A first dust removal mechanism 240 is mounted on a second fixed frame 210 and is tactilely connected to the electrode strip. The first dust removal mechanism 240 is used to adsorb foreign matter on the surface of the electrode strip; and

[0091] The feeding mechanism 250 is located below the laser cutting mechanism 230. The feeding mechanism 250 is used to receive the waste generated from the cutting of electrode strips.

[0092] Specifically, such as Figure 1 and Figure 4In this embodiment, the electrode unwinding device 200 is used to supply electrode sheets during the battery cell production process. The electrode unwinding device 200 includes a second fixing frame 210, which includes a vertically placed flat plate structure. All components of the electrode unwinding device 200 are mounted on this flat plate structure. This allows all components to use the flat plate structure as a unified reference, improving the accuracy of the electrode unwinding device 200 installation and reducing assembly errors between components. Furthermore, the flat plate has an inlet end and an outlet end. The inlet end is located at the end of the flat plate near the ground, and the outlet end is located on one side of the inlet end. When the electrode unwinding device 200 is installed during the battery cell production process... When installed on the production line, the discharge end is arranged close to other downstream equipment; the electrode unwinding device 200 also includes an unwinding mechanism 220, which is located at the feed end and rotatably connected to the second fixed frame 210. The electrode strip can be placed on the unwinding mechanism 220 to supply electrode strip to the electrode unwinding device 200. To improve production efficiency, the unwinding mechanism 220 can simultaneously load two electrode strips, so that while producing one electrode strip, the other electrode strip is pre-stored. When the produced electrode strip is finished, the production can switch to the production of the other electrode strip. At the same time, the completed electrode strip can be replaced without affecting production; the electrode... The unwinding device 200 also includes a traction mechanism. In this design, the traction mechanism includes rollers rotatably mounted on the second fixed frame 210. The electrode strip is rotatably connected to multiple rollers from the outlet of the unwinding mechanism 220 and is conveyed to the outlet end of the second fixed frame 210 under the traction of the rollers. To prevent wrinkles from forming during the conveying process, the traction mechanism can be equipped with a tension roller assembly. The tension roller assembly performs real-time tension detection and adjustment of the electrode strip to ensure smooth conveying. Additionally, the electrode unwinding device 200 also includes a laser cutting mechanism 230, which is located on the conveying line of the electrode strip. In this design… The laser cutting mechanism 230 is located in the middle of the flat plate structure and on one side of the electrode strip. The laser cutting mechanism 230 can be a device such as a galvanometer laser. The laser cutting mechanism 230 is provided with a laser emission port, which corresponds to the end face of the electrode strip. When the electrode strip passes through the emission port, the laser cutting mechanism 230 generates laser to cut the electrode strip to form the electrode tab structure on the electrode. Afterwards, the electrode strip continues to be conveyed to the discharge end and further cut into individual electrode structures in subsequent processes. Since laser cutting has high precision and high speed, using laser cutting to process the electrode strip can improve production efficiency, improve the processing precision of the electrode, and save costs.In addition, to improve the production yield of electrode strips, the electrode unwinding device 200 also includes a first dust removal mechanism 240 and a discharge mechanism 250. The first dust removal mechanism 240 is mounted on the second fixed frame 210 and rolls in contact with the end face of the electrode strip. The first dust removal mechanism 240 can be a roller with electrostatic adsorption. When the electrode strip passes through the first dust removal mechanism 240, dust, iron filings, and other foreign objects on the end face of the electrode strip can be adsorbed by the first dust removal mechanism 240, thereby improving the surface cleanliness of the electrode strip and thus facilitating subsequent cell processing. This improves production yield and efficiency. Furthermore, a discharge mechanism 250 is located below the laser cutting mechanism 230. This discharge mechanism 250 can also employ a structure similar to the first dust removal mechanism 240, with electrostatic adsorption. The discharge mechanism 250 and the first dust removal mechanism 240 respectively contact the end faces of opposite sides of the electrode strip. When the electrode strip completes laser cutting and passes through the discharge mechanism 250, the discharge mechanism 250 can adsorb waste generated after cutting the electrode strip, as well as other foreign matter on the electrode strip. This further improves the cleanliness of the electrode strip, thereby further increasing the yield of battery cell production.

[0093] Furthermore, the first dust removal unit 240 includes:

[0094] Support frame 241 is mounted on second fixed frame 210;

[0095] The dust collection roller 242 is rotatably mounted on the support frame 241 and is tumbledly connected to the electrode material strip. The dust collection roller 242 has a first dust collection chamber inside and a dust collection hole is opened on the outer peripheral wall of the dust collection roller 242. One end of the dust collection hole is connected to the first dust collection chamber, and the other end of the dust collection hole is used to abut against the end face of the electrode material strip.

[0096] The first suction pipe 243 is connected to the first dust collection chamber to discharge the gas in the first dust collection chamber and form a negative pressure.

[0097] Specifically, such as Figure 5In this embodiment, the first dust removal mechanism 240 includes a support frame 241 connected to a second fixed frame 210. A support rod parallel to the electrode strip is horizontally arranged on the support frame 241. A suction roller 242 is rotatably connected to the support rod. The suction roller 242 is a cylindrical structure. The outer peripheral wall of the suction roller 242 is in rolling contact with the electrode strip. A first suction chamber is opened inside the suction roller 242. Multiple suction holes are opened on the outer peripheral wall of the suction roller 242, and the multiple suction holes are evenly arranged on the outer peripheral wall of the suction roller 242. In addition, the first dust removal mechanism 240 also includes a first suction pipe 24. 3. The first suction pipe 243 is located at the end of the suction roller 242 and is rotatably connected to the suction roller 242. The end of the first suction pipe 243 is connected to the first dust collection chamber of the suction roller 242, and the other end is connected to a negative pressure generating device. Thus, through the action of the negative pressure generating device, external air can enter the suction roller 242 through the suction hole and be discharged into the negative pressure generating device through the first suction pipe 243. A negative pressure environment can be formed in the first dust collection chamber. When the suction roller 242 contacts the end face of the electrode strip, impurities or other foreign objects on the electrode strip can be sucked into the first dust collection chamber through the suction hole, thereby cleaning the electrode strip.

[0098] Furthermore, the material discharge mechanism 250 includes:

[0099] Conveyor belt 251 is located below laser cutting mechanism 230 and along the electrode material conveying direction. Conveyor belt 251 has a first end that contacts the electrode material and a second end that is spaced apart from the electrode material. Conveyor belt 251 absorbs waste material from the first end and conveys it to the second end.

[0100] Brush 252, disposed on frame 100, contacts the second end to scrape waste away from the second end; and

[0101] Dust collection box 253 is located below brush 252 to collect waste.

[0102] Specifically, such as Figure 6In this embodiment, the material discharge mechanism 250 includes a conveyor belt 251, which is located below the second fixing frame 210 of the laser cutting mechanism 230 and opposite to the end face of the electrode strip. The conveying direction of the conveyor belt 251 is the same as that of the electrode strip. Along the conveying direction of the electrode strip, the conveyor belt 251 has a first end that contacts the electrode strip and a second end that is spaced apart from the electrode strip. In addition, the conveyor belt 251 can be a conveyor belt 251 with a vacuum adsorption function. When the electrode strip passes through the first end of the conveyor belt 251, the first end of the conveyor belt 251 can adsorb... Waste generated after cutting the electrode strip is conveyed to the second end, achieving separation of waste on the electrode strip. In addition, a brush 252 is provided at the second end of the conveyor belt 251. The brush 252 is fixedly connected to the second fixed frame 210. The bristles of the brush 252 are in contact with the second end of the conveyor belt 251. A dust collection box 253 is provided below the brush 252. The dust collection box 253 has a top opening. When the waste is conveyed to the second end, the waste will be brushed off the conveyor belt 251 by the brush 252 and fall into the dust collection box 253 below. In this way, the waste on the electrode strip is cleaned, which helps to improve the cleanliness of the electrode strip.

[0103] Furthermore, the first conveying device 300 includes:

[0104] The first conveyor belt 310 is disposed on the frame 100. The first conveyor belt 310 adsorbs the bottom surface of the positive and negative electrode sheets and conveys them to the second end.

[0105] The second conveyor belt 320 is disposed on the frame 100. The second conveyor belt 320 is disposed downstream of the first conveyor belt 310, and the second conveyor belt 320 partially overlaps with the first conveyor belt 310 to adsorb the top surface of the positive and negative electrode sheets from the first conveyor belt 310 and convey them to the second end.

[0106] Two dust collection components 330 are provided, which are respectively disposed on the first conveyor belt 310 and the second conveyor belt 320 to remove dust from the bottom and top surfaces of the positive and negative electrode sheets.

[0107] Two iron removers 340 are provided, one on the first conveyor belt 310 and the other on the second conveyor belt 320, to adsorb iron filings from the first conveyor belt 310 and the other on the second conveyor belt 320; and

[0108] The size detection component 350 is located above the first conveyor belt 310 and is used to detect the external dimensions of the positive and negative electrode sheets passing through.

[0109] Furthermore, the first conveying device 300 also includes a lifting cylinder 360, which includes a cylinder body and a piston rod disposed on the cylinder body. The cylinder body is fixedly connected to the frame 100, and the piston rod extends and retracts in the vertical direction. The end of the piston rod away from the cylinder body is connected to the second conveyor belt 320 to drive the second conveyor belt 320 to move in the vertical direction.

[0110] like Figure 7 In this embodiment, the first conveying device 300 includes a first conveyor belt 310 and a second conveyor belt 320 arranged sequentially along a first direction. Both the first conveyor belt 310 and the second conveyor belt 320 are conveyor belt mechanisms with vacuum adsorption function. When the positive electrode and the negative electrode reach the first conveyor belt 310, the first conveyor belt 310 receives and adsorbs the bottom surfaces of the positive and negative electrode and conveys them to the second end of the frame 100. At the end of the first conveyor belt 310 near the second end, the second conveyor belt 320 is located above the first conveyor belt 310 and overlaps with the end portion of the first conveyor belt 310. When the positive and negative electrode reach this position, the second conveyor belt 320 can adsorb the upper surface of the positive and negative electrode and continue to convey them to the second end. In addition, the first conveying mechanism also includes a dust collection component 330. The dust collection assembly 330 can be a device similar to a vacuum cleaner. There are two dust collection assemblies 330, which are respectively arranged on the first conveyor belt 310 and the second conveyor belt 320. The dust collection assembly 330 on the first conveyor belt 310 can remove dust from the top surface of the positive and negative electrode sheets that pass by, while the dust collection assembly 330 on the second conveyor belt 320 can remove dust from the bottom surface of the positive and negative electrode sheets that pass by. This can improve the surface cleanliness of the positive and negative electrode sheets. In addition, the first conveyor belt 310 and the second conveyor belt 320 are also equipped with an iron remover 340. The iron remover 340 can be a strong magnetic iron remover rod. The iron remover 340 can remove iron filings and impurities on the first conveyor belt 310 and the second conveyor belt 320, thereby preventing the positive and negative electrode sheets from being contaminated by impurities when they are transported on the first conveyor belt 310 and the second conveyor belt 320. In addition, a size detection component 350 can be provided above the first conveyor belt 310. The size detection component 350 can be a line scan camera or an industrial CCD camera. By taking pictures of the passing positive and negative electrode sheets and measuring the pictures, positive and negative electrode sheets that do not meet the size specifications can be identified to prevent them from being used in subsequent processes, which is beneficial to improving the yield of battery cell processing.

[0111] Furthermore, the battery cell die-cutting equipment also includes:

[0112] The second conveying device 700 is located at the second end of the frame 100 and conveys positive and negative electrode sheets along the first direction;

[0113] Waste box 800 is located downstream of second conveying device 700 along the first direction, and waste box 800 receives waste discharged from second conveying device 700.

[0114] Specifically, such as Figure 1 The battery cell die-cutting equipment also includes a second conveying device 700. The second conveying device 700 is a conveyor belt device located downstream of the second conveyor belt 320. The second conveying device 700 conveys positive and negative electrode sheets along the first direction. The second conveying device 700 can be connected to the stacking equipment in the subsequent process to facilitate its material handling and improve production efficiency. In addition, a waste box 800 is provided downstream of the second conveying device 700. Positive and negative electrode sheets that are determined to be unqualified by the size detection component 350 at the position of the first conveyor belt 310 can be discharged into the waste box 800 through the second conveying device 700 to facilitate the collection of waste.

[0115] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A battery cell die-cutting device, characterized in that, include: A frame for support on the ground, the frame extending along a first direction, and in the first direction, the frame having a first end located upstream and a second end located downstream; The electrode unwinding device is provided in two parts, which are located at the first end of the frame. The two electrode unwinding devices unwind and cut the electrode strips of the positive and negative electrodes to form electrode tabs respectively. The first conveying device is provided in two, with the two first conveying devices located at the second end of the frame to convey positive and negative electrode sheets downstream along the first direction; Two chamfering devices are provided. The two chamfering devices are located on the frame and between the electrode unwinding device and the first conveying device. The two chamfering devices receive the electrode strip from the electrode unwinding device and chamfer it. Two cutting devices are provided, each located on the frame and between the chamfering device and the first conveying device. Each cutting device receives the electrode strip from the chamfering device and cuts it into positive and negative electrode sheets. A dust removal device is provided on the cutting device, and the dust removal device is used to clean the waste and foreign matter on the cutting device and the positive and negative electrode sheets; The cutting device includes: A first fixed frame is disposed on the frame; The drive roller is rotatably mounted on the first fixed frame; The driven roller is rotatably positioned above the driving roller, and the driving roller and the driven roller are in rolling connection with the upper and lower end faces of the electrode strip to convey the electrode strip along the first direction; A lifting mechanism, disposed on the first fixed frame and drivenly connected to the driven roller, drives the driven roller to move closer to or away from the driving roller; and A cutting mechanism includes a drive assembly and a cutting tool connected to the drive assembly. The drive assembly is fixed to the frame and drivenly connected to the cutting tool to drive the cutting tool to move up and down to cut the electrode strip. The dust removal device includes: A first dust removal component is located below the drive roller. The first dust removal component contacts the outer peripheral wall of the drive roller to remove and collect impurities on the drive roller. The second dust removal component is located below the cutting mechanism. The top of the second dust removal component is provided with a discharge port, which is used to receive the waste generated after the electrode strip is cut.

2. The cell die-cutting equipment as described in claim 1, characterized in that, The first dust removal component includes: A scraper is disposed below the drive roller. One end of the scraper is fixed to the first fixed frame, and the other end of the scraper contacts the outer peripheral wall of the drive roller to scrape off impurities on the drive roller. A dust collection shell is located below the scraper, and the dust collection shell has a dust collection chamber with an opening at the top, which is used to collect impurities on the drive roller.

3. The cell die-cutting equipment as described in claim 1, characterized in that, The electrode unwinding device includes: The second fixing frame is located at the first end of the frame; An unwinding mechanism is rotatably mounted on the second fixed frame. The unwinding mechanism is used to store the electrode strip and unwind the electrode strip. A laser cutting mechanism is provided on the second fixed frame, and the laser cutting mechanism is used to cut the electrode strip to form electrode tabs; A first dust removal mechanism, disposed on the second fixed frame and tactilely connected to the electrode strip, is used to adsorb foreign matter from the surface of the electrode strip; and A feeding mechanism is located below the laser cutting mechanism, and the feeding mechanism is used to receive the waste generated from the cutting of the electrode strip.

4. The cell die-cutting equipment as described in claim 3, characterized in that, The first dust removal mechanism includes: The support frame is located on the second fixed frame; A dust collection roller is rotatably mounted on the support frame and is tumbledly connected to the electrode strip. The dust collection roller has a first dust collection chamber inside and a dust collection hole is opened on the outer peripheral wall of the dust collection roller. One end of the dust collection hole is connected to the first dust collection chamber, and the other end of the dust collection hole is used to abut against the end face of the electrode strip. The first suction pipe is connected to the first dust collection chamber to discharge the gas in the first dust collection chamber and create a negative pressure.

5. The cell die-cutting equipment as described in claim 3, characterized in that, The material discharge mechanism includes: A conveyor belt is disposed below the laser cutting mechanism and along the conveying direction of the electrode material strip. The conveyor belt has a first end that contacts the electrode material strip and a second end that is spaced apart from the electrode material strip. The conveyor belt adsorbs the waste material from the first end and conveys it to the second end. A brush, disposed on the second fixing frame, the brush contacting the second end to scrape the waste away from the second end; and A dust collection box is located below the brush to collect the waste material.

6. The cell die-cutting equipment as described in claim 1, characterized in that, The first conveying device includes: A first conveyor belt is provided on the frame, and the first conveyor belt adsorbs the bottom surface of the positive and negative electrode sheets and conveys them to the second end; A second conveyor belt is disposed on the frame, downstream of the first conveyor belt, and partially overlaps with the first conveyor belt to adsorb the top surfaces of the positive and negative electrode sheets from the first conveyor belt and convey them to the second end; Two dust collection components are provided, which are respectively disposed on the first conveyor belt and the second conveyor belt to remove dust from the bottom and top surfaces of the positive and negative electrode sheets; Two iron removers are provided, one on the first conveyor belt and the other on the second conveyor belt, to adsorb iron filings from the first conveyor belt and the other on the second conveyor belt; and A size detection component is disposed above the first conveyor belt, and the size detection component is used to detect the external dimensions of the positive and negative electrode sheets passing by.

7. The cell die-cutting equipment as described in claim 6, characterized in that, The first conveying device further includes a lifting cylinder, which includes a cylinder body and a piston rod disposed on the cylinder body. The cylinder body is fixedly connected to the frame, and the piston rod extends and retracts in the vertical direction. The end of the piston rod away from the cylinder body is connected to the second conveyor belt to drive the second conveyor belt to move in the vertical direction.

8. The cell die-cutting equipment as described in claim 1, characterized in that, The battery cell die-cutting equipment also includes: A second conveying device is disposed at the second end of the frame and conveys the positive and negative electrode sheets along the first direction; A waste container is disposed downstream of the second conveying device along the first direction, and the waste container receives the waste discharged by the second conveying device.

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