Pole piece production device

Abstract

The utility model provides a pole piece production device which comprises a film forming assembly, a laminating roller set and a laser cutting assembly, and the film forming assembly is used for extruding powder to form a film layer; the laminating roller group is arranged at the downstream of the film forming assembly and comprises two rollers, a roller gap is formed between the two rollers, the roller gap is used for allowing the conductive carrier to pass through, and the two rollers can rotate relatively so as to laminate the film layer on the surface of the conductive carrier; the laser cutting assembly is arranged on the downstream portion of the attaching roller set so as to cut the film layer attached to the conductive carrier in the conveying direction of the conductive carrier, so that the film layer is cut into the specific width or the edge of the film layer is trimmed, the continuous automatic production process from film forming, attaching to cutting is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to an electrode production apparatus. Background Technology

[0002] In the electrode production process, powder is usually extruded into a film using a film-forming component, and then the extruded film is pressed and bonded to two opposite surfaces of the conductive carrier using a bonding roller group. After coating is completed, the film layer on the conductive carrier is cut or trimmed using traditional mechanical cutters to obtain the electrode of the required size and shape. However, this cutting method requires frequent manual operation to change the cutter and adjust the cutting position, which reduces the production efficiency of the electrode. Utility Model Content

[0003] This application discloses an electrode production apparatus that can improve the production efficiency of electrodes.

[0004] To achieve the above objectives, this application discloses an electrode production apparatus, comprising:

[0005] A film-forming assembly for extruding powder into a film layer;

[0006] A bonding roller assembly is disposed downstream of the film forming assembly. The bonding roller assembly includes two rollers with a gap between them for a conductive carrier to pass through. The two rollers are rotatable relative to each other to bond the film layer to the surface of the conductive carrier.

[0007] A laser cutting assembly is disposed on the transmission path of the conductive carrier to cut the film layer attached to the conductive carrier along the transmission direction of the conductive carrier.

[0008] Optionally, the film-forming assembly includes a first film-forming element and a second film-forming element, wherein the first film-forming element is used to extrude powder into a first film layer, and the second film-forming element is used to extrude powder into a second film layer;

[0009] A bonding roller assembly is disposed between a first film-forming element and a second film-forming element to bond the first film layer and the second film layer to two opposite surfaces of the conductive carrier.

[0010] A laser cutting assembly for cutting the first and second film layers bonded to the conductive carrier along the transmission direction of the conductive carrier.

[0011] Optionally, the width of the conductive carrier is adapted to the width of an electrode, and the laser cutting assembly includes two laser cutting elements, which are respectively disposed on both sides of the conductive carrier in the width direction.

[0012] Optionally, the width of the conductive carrier is adapted to the width of the plurality of electrodes. Along the width direction of the conductive carrier, a plurality of base coatings are spaced apart on the conductive carrier. The base coatings are used to adhere the first film layer and the second film layer, and two adjacent base coatings form a blank area.

[0013] The laser cutting assembly includes at least three laser cutting elements, wherein two of the laser cutting elements are used to remove the first film layer and the second film layer from the two side edges in the width direction of the conductive carrier, and the other laser cutting elements are used to remove the first film layer and the second film layer in the blank area.

[0014] Optionally, the laser cutting assembly includes a mounting rod extending along the width direction of the conductive carrier, and a plurality of laser cutting elements are spaced apart on the mounting rod along the width direction of the conductive carrier.

[0015] Optionally, the electrode production apparatus further includes a cleaning component disposed upstream of the laser cutting component on the transmission path of the conductive carrier, for cleaning the waste material formed by the laser cutting component.

[0016] Optionally, the cleaning assembly includes a scraper mounting bracket and a scraper mounted on the scraper mounting bracket. The scraper mounting bracket is disposed upstream of the laser cutting assembly on the transmission path of the conductive carrier, and the scraper is used to remove waste material generated by the laser cutting assembly.

[0017] Optionally, the scraper is floatingly mounted on the scraper mounting frame along the contact direction between the scraper and the conductive carrier.

[0018] Optionally, the cleaning assembly further includes a negative pressure collector for sucking up and collecting the waste cleaned by the scraper.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] In the electrode production process, firstly, the film-forming component extrudes the powder into a film layer. During the transport process, the conductive carrier enters the roller between two rollers. The two rollers rotate relative to each other, and due to the extrusion action of the rollers, the film layer is tightly bonded to the surface of the conductive carrier, forming an adhesive body between the film layer and the conductive carrier. After bonding, the conductive carrier continues to move along the transport path. When it reaches the position of the laser cutting component, the laser cutting component is activated and cuts the film layer bonded to the conductive carrier along the transport direction of the conductive carrier. This cuts the film layer to a specific width or trims the edges of the film layer, ensuring the dimensional accuracy of the electrode and improving the consistency and safety of the battery. In addition, all components of the entire electrode production device work together to realize a continuous automated production process from film formation and bonding to cutting, reducing manual intervention, improving production efficiency, and reducing production costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an electrode production apparatus provided in an embodiment of this application;

[0023] Figure 2 This is a top view of the electrode production apparatus provided in the embodiments of this application;

[0024] Figure 3 This is a side view of the bonding roller assembly and laser cutting assembly provided in the embodiments of this application;

[0025] Figure 4 This is a schematic diagram of the first film layer being attached to a conductive carrier according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram illustrating how the width of the conductive carrier is adapted to the width of an electrode in an embodiment of this application.

[0027] Figure 6 This is a schematic diagram illustrating how the width of the conductive carrier is adapted to the width of the multiple electrode sheets in an embodiment of this application.

[0028] Explanation of main figure symbols

[0029] 1-Electrode production equipment;

[0030] 10-Conductive carrier; 11-Primer coating; 12-Blank area;

[0031] 21 - First film layer; 22 - Second film layer;

[0032] 100 - Film-forming component; 110 - First film-forming element; 120 - Second film-forming element;

[0033] 200 - Lamination roller assembly; 210 - Roller;

[0034] 300 - Laser cutting assembly; 310 - Laser-cut part; 320 - Mounting rod;

[0035] 400 - Cleanup components. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0038] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0040] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components whose specific types and structures may be the same or different, and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0041] As mentioned in the background section, in the prior art, after coating is completed, traditional mechanical tools are used to cut or trim the film layer on the conductive carrier to obtain the electrode sheet of the required size and shape. However, such cutting method requires frequent manual operation to change the tool and adjust the cutting position, which reduces the production efficiency of the electrode sheet.

[0042] To address the aforementioned issues, this application provides an electrode production apparatus with a laser cutting component, capable of cutting the film layer bonded to the conductive carrier during the conductive carrier transport process. This achieves a continuous automated production process from film formation and bonding to cutting, reducing manual intervention, improving production efficiency, and lowering production costs.

[0043] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0044] See Figures 1 to 4 This embodiment provides an electrode production apparatus 1, which includes a film forming component 100, a bonding roller group 200, and a laser cutting component 300. The film forming component 100 is used to extrude powder into a film layer. The bonding roller group 200 is located downstream of the film forming component 100 and includes two rollers 210 with a roller gap between them for a conductive carrier 10 to pass through. The two rollers 210 can rotate relative to each other to bond the film layer onto the surface of the conductive carrier 10. The laser cutting component 300 is located downstream of the bonding roller group 200 to cut the film layer bonded to the conductive carrier 10 along the transport direction of the conductive carrier 10.

[0045] The transmission direction of the conductive carrier 10 is as follows: Figure 3 The direction indicated by the middle arrow Y.

[0046] In the electrode production process, firstly, the film-forming component 100 extrudes the powder into a film layer. During the transport process, the conductive carrier 10 enters the gap between two rollers 210. The two rollers 210 rotate relative to each other. Due to the extrusion action of the rollers 210, the film layer is tightly bonded to the surface of the conductive carrier 10, forming a bonded body between the film layer and the conductive carrier 10. After bonding, the conductive carrier 10 continues to move along the transport path. When it reaches the position of the laser cutting component 300, the laser cutting component 300 is activated and cuts the film layer bonded to the conductive carrier 10 along the transport direction of the conductive carrier 10 to cut the film layer to a specific width or trim the edges of the film layer, ensuring the dimensional accuracy of the electrode and improving the consistency and safety of the battery. In addition, all components of the entire electrode production device 1 work together to realize a continuous automated production process from film formation and bonding to cutting, reducing manual intervention, improving production efficiency, and reducing production costs.

[0047] It should be noted that the two rollers 210 rotate relative to each other, which may allow the film layer to be adhered to only one surface of the conductive carrier 10, or the film layer to be adhered to two opposite surfaces of the conductive carrier 10, without limitation here.

[0048] In one possible embodiment, see Figures 1 to 4 The film-forming assembly 100 includes a first film-forming element 110 and a second film-forming element 120. The first film-forming element 110 is used to extrude powder into a first film layer 21, and the second film-forming element 120 is used to extrude powder into a second film layer 22. A bonding roller assembly 200 is disposed between the first film-forming element 110 and the second film-forming element 120 to bond the first film layer 21 and the second film layer 22 onto two opposite surfaces of the conductive carrier 10. A laser cutting assembly 300 is used to cut the first film layer 21 and the second film layer 22 bonded to the conductive carrier 10 along the transmission direction of the conductive carrier 10.

[0049] Thus, the first film-forming component 110 extrudes the powder into a first film layer 21, while the second film-forming component 120 also extrudes the powder into a second film layer 22. During transport, the conductive carrier 10 enters the roller between the two rollers 210. The two rollers 210 rotate relative to each other, tightly bonding the films extruded by the first film-forming component 110 and the second film-forming component 120 to the two opposite surfaces of the conductive carrier 10, forming a bond between the film layer and the conductive carrier 10. After bonding, the conductive carrier 10 continues to move along the transport path. When it reaches the position of the laser cutting assembly 300, the laser cutting assembly 300 is activated. The first film layer 21 and the second film layer 22 bonded to the conductive carrier 10 are cut along the transmission direction of the conductive carrier 10 to cut the first film layer 21 and the second film layer 22 into electrode units that meet specific size requirements. For example, they are cut into specific widths or the edges of the first film layer 21 and the second film layer 22 are trimmed to ensure the dimensional accuracy of the electrode, which is beneficial to improving the consistency and safety of the battery. In addition, all components of the entire electrode production device 1 work together to realize a continuous automated production process from film formation and bonding to cutting, reducing manual intervention, improving production efficiency, and reducing production costs.

[0050] In one possible embodiment, see Figure 4 and Figure 5 The width of the conductive carrier 10 is adapted to the width of an electrode. The laser cutting assembly 300 includes two laser cutting parts 310, which are respectively disposed on both sides of the conductive carrier 10 in the width direction.

[0051] Wherein, the width direction of the aforementioned conductive carrier 10 is Figure 4 The direction indicated by the middle arrow X.

[0052] Two laser cutting components 310 are located on both sides of the conductive carrier 10 in the width direction, which can accurately cut and trim the edge of the electrode, thereby trimming the edge of the electrode to be extremely neat. Compared with traditional cutting methods, such as mechanical cutting, which may cause edge burrs and unevenness, laser cutting can make the edge of the electrode reach a higher standard of flatness and smoothness. Moreover, due to the high precision characteristics of laser cutting, the edge of the electrode can be precisely trimmed according to the preset width requirements, ensuring that the width of each electrode is consistent with the design specifications.

[0053] In one possible embodiment, see Figure 6 The width of the conductive carrier 10 is adapted to the width of the multiple electrode sheets. Along the width direction of the conductive carrier 10, multiple base coatings 11 are spaced apart on the conductive carrier 10. The base coatings 11 are used to adhere the first film layer 21 and the second film layer 22. A blank area 12 is formed between two adjacent base coatings 11.

[0054] The laser cutting assembly 300 includes at least three laser cutting elements 310, wherein two of the laser cutting elements 310 are used to remove the two side edges of the first film layer 21 and the second film layer 22 in the width direction of the conductive carrier 10, and the other laser cutting elements 310 are used to remove the first film layer 21 and the second film layer 22 in the blank area 12.

[0055] Because the width of the conductive carrier 10 is adapted to the width of multiple electrode sheets and multiple base coatings 11 are provided, multiple electrode sheet units can be formed on the conductive carrier 10 simultaneously in one production process. Compared with the traditional method of producing electrode sheets one by one, this reduces the number of cycles of basic processes such as film formation, bonding, and cutting, significantly increases the output of electrode sheets per unit time, meets the needs of large-scale production, and effectively reduces production time costs. Moreover, multiple electrode sheets undergo film formation, bonding, and cutting processes on the same conductive carrier 10 at the same time, which means that they are under the same production environment and process parameter control. For example, the first film layer 21 and the second film layer 22 are extruded and bonded to the base coating 11 under the same temperature, pressure, and time conditions, and are cut by the same set of laser cutting components 300 according to the same cutting program. This effectively avoids the quality differences of electrode sheets caused by different batches of production or different equipment conditions, and ensures a high degree of consistency of each electrode sheet in key quality indicators such as thickness, density, and dimensional accuracy. This is conducive to improving the overall performance stability and consistency of battery products and reducing the defect rate of batteries caused by differences in electrode sheet quality.

[0056] In one possible embodiment, see Figure 6 The laser cutting assembly 300 includes a mounting rod 320 extending along the width direction of the conductive carrier 10, and a plurality of laser cutting parts 310 are spaced apart on the mounting rod 320 along the width direction of the conductive carrier 10.

[0057] Therefore, the production layout and size specifications of the electrode sheets can be changed by adjusting the number and spacing of the laser-cut parts 310 on the mounting rod 320 and their correspondence with the primer 11. For example, when it is necessary to produce products with different widths or different quantities of electrode sheets, only the installation position of the laser-cut parts 310 needs to be simply adjusted, without the need for large-scale modification or redesign of the entire production equipment, thus improving the adaptability and flexibility of the electrode sheet production device 1 to various product requirements.

[0058] In one possible embodiment, see Figure 5 and Figure 6 The electrode production apparatus 1 also includes a cleaning component 400, which is located upstream of the laser cutting component 300 on the transmission path of the conductive carrier 10, in order to clean up the waste material formed by the laser cutting component 300.

[0059] In this way, when the conductive carrier 10 is running continuously on the transmission path, the waste generated by cutting can be cleaned up in time without having to stop the production line to deal with the waste. This allows the processes of film formation, bonding, cutting and cleaning to be closely connected, forming a smooth automated production process, which greatly reduces the time of production interruption, ensures that the electrode sheets can be produced continuously and stably, and improves the overall production efficiency.

[0060] In one possible embodiment, the cleaning component 400 includes a scraper mounting bracket and a scraper mounted on the scraper mounting bracket. The scraper mounting bracket is disposed upstream of the laser cutting component 300 on the transmission path of the conductive carrier 10. The scraper is used to remove waste generated by the laser cutting component 300.

[0061] When the laser cutting assembly 300 cuts the film layer on the conductive carrier 10 and generates waste, the waste moves to the underside of the scraper as the conductive carrier 10 is transported. At this time, the scraper, through its close contact with the surface of the conductive carrier 10, scrapes the waste off the surface of the conductive carrier 10. The waste scraped off by the scraper moves along a predetermined direction under the push of the scraper to fall into a specially designed waste collection channel or container. In this way, the scraper removes waste through direct physical contact, which is simple and efficient. Compared with some cleaning methods based on suction or other complex principles, the scraper does not require complex air sources, vacuum equipment, or other auxiliary facilities. Its structure is relatively simple, with a low failure rate and low maintenance cost. Moreover, when dealing with some larger, harder, or stickier waste, the scraper can more effectively peel the waste off the conductive carrier 10 with its mechanical force, demonstrating strong cleaning ability and ensuring the cleanliness of the cutting area.

[0062] In one possible embodiment, the scraper is floatingly mounted on the scraper mounting frame along the contact direction between the scraper and the conductive carrier 10.

[0063] The aforementioned floating installation structure may include elastic elements such as springs, elastic rubber pads, and adjustable telescopic devices, so that the scraper can have a certain amount of movement in the direction of contact with the conductive carrier 10, thereby achieving a floating effect. For example, when the scraper is subjected to external force, the spring will extend or retract accordingly, allowing the scraper to move within a certain range.

[0064] When the laser cutting assembly 300 generates waste material, as the conductive carrier 10 moves, the waste material reaches the position of the scraper. In a floating state, the scraper flexibly adjusts its position according to the thickness, hardness, and other characteristics of the waste material, as well as the actual situation of the conductive carrier 10 surface. This ensures that the waste material is effectively scraped off without damaging the conductive carrier 10 or the scraper itself due to excessive contact. For example, when encountering thicker blocky waste material, the scraper can appropriately retract within the floating range before applying a suitable force to scrape the waste material up. Throughout the process, the scraper achieves dynamic adaptation with the conductive carrier 10 and the waste material through floating installation. Thus, because the scraper is floating, it can automatically adjust the pressure between itself and the conductive carrier 10 according to the actual situation, effectively avoiding the situation where the scraper excessively squeezes the surface of the conductive carrier 10 due to fixed installation.

[0065] In one possible embodiment, the cleaning assembly 400 further includes a negative pressure collector for sucking up and collecting the waste cleaned by the scraper.

[0066] In this way, the negative pressure collection component works closely with the scraper. The scraper scrapes the waste off the conductive carrier 10, and the negative pressure collection component then sucks it away, forming a continuous and efficient cleaning process. This synergistic effect prevents waste from accumulating under the scraper or around the conductive carrier 10 after being scraped off, reducing the possibility of waste re-adhering to the conductive carrier 10 or other equipment components. This significantly improves the speed and thoroughness of waste cleaning, ensuring that the production area remains clean at all times, which is conducive to the continuous and stable operation of the electrode production process.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the electrode production apparatus of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electrode production apparatus (1), characterized in that, include: A film-forming assembly (100) is used to extrude powder into a film layer; A bonding roller assembly (200) is disposed downstream of the film forming assembly (100). The bonding roller assembly (200) includes two rollers (210) with a gap between them for the conductive carrier (10) to pass through. The two rollers (210) are rotatable relative to each other to bond the film layer to the surface of the conductive carrier (10). A laser cutting assembly (300) is disposed on the transmission path of the conductive carrier (10) to cut the film layer attached to the conductive carrier (10) along the transmission direction of the conductive carrier (10). A cleaning assembly (400) includes a scraper mounting bracket and a scraper mounted on the scraper mounting bracket, the scraper being used to remove waste material generated by the laser cutting assembly (300) during cutting.

2. The electrode production apparatus (1) according to claim 1, characterized in that, The film-forming assembly (100) includes a first film-forming component (110) and a second film-forming component (120). The first film-forming component (110) is used to extrude powder into a first film layer (21), and the second film-forming component (120) is used to extrude powder into a second film layer (22). A bonding roller assembly (200) is disposed between a first film-forming member (110) and a second film-forming member (120) to bond the first film layer (21) and the second film layer (22) to two opposing surfaces of the conductive carrier (10); A laser cutting assembly (300) is used to cut the first film layer (21) and the second film layer (22) attached to the conductive carrier (10) along the transmission direction of the conductive carrier (10).

3. The electrode production apparatus (1) according to claim 2, characterized in that, The width of the conductive carrier (10) is adapted to the width of an electrode, and the laser cutting assembly (300) includes two laser cutting parts (310), which are respectively disposed on both sides of the conductive carrier (10) in the width direction.

4. The electrode production apparatus (1) according to claim 2, characterized in that, The width of the conductive carrier (10) is adapted to the width of the multiple electrodes. Along the width direction of the conductive carrier (10), multiple base coats (11) are spaced apart on the conductive carrier (10). The base coats (11) are used to adhere the first film layer (21) and the second film layer (22). A blank area (12) is formed between two adjacent base coats (11). The laser cutting assembly (300) includes at least three laser cutting elements (310), two of which are used to remove the first film layer (21) and the second film layer (22) at the two side edges in the width direction of the conductive carrier (10), and the other laser cutting elements (310) are used to remove the first film layer (21) and the second film layer (22) at the blank area (12).

5. The electrode production apparatus (1) according to claim 3, characterized in that, The laser cutting assembly (300) includes a mounting rod (320) extending along the width direction of the conductive carrier (10), and a plurality of laser cutting elements (310) are spaced apart on the mounting rod (320) along the width direction of the conductive carrier (10).

6. The electrode production apparatus (1) according to claim 1, characterized in that, The conductive carrier (10) is positioned upstream of the laser cutting assembly (300) on the transmission path of the conductive carrier (10) to clean up the waste material formed by the laser cutting assembly (300).

7. The electrode production apparatus (1) according to claim 6, characterized in that, The scraper mounting bracket is positioned upstream of the laser cutting assembly (300) on the transmission path of the conductive carrier (10).

8. The electrode production apparatus (1) according to claim 7, characterized in that, Along the contact direction between the scraper and the conductive carrier (10), the scraper is floatingly mounted on the scraper mounting frame.

9. The electrode production apparatus (1) according to claim 7, characterized in that, The cleaning assembly (400) also includes a negative pressure collector for sucking up and collecting the waste material cleaned by the scraper.

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