Roller and battery production line

Abstract

This application provides a roller conveyor and battery production line. The roller conveyor includes a roller body and a baffle. The roller body has multiple rows of air outlets, which are spaced apart circumferentially along the roller body. Multiple outlets in each row are spaced apart axially along the roller body. The baffle is slidably mounted on the roller body along its axial direction and blocks a portion of the air outlets. The technical solution provided by this application can reduce the risk of wrinkling in the blank areas of the electrode sheets during belt conveying.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a rolling mill and battery production line. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important part of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] After the electrode is coated through a gap, the tension in the blank area and the coated area of ​​the electrode is different during the conveyor belt process, and wrinkling is likely to occur in the blank area of ​​the electrode. Utility Model Content

[0004] This application provides a roll forming and battery production line that can reduce the risk of wrinkling in the blank area of ​​the electrode sheet during the belt conveyor process.

[0005] This application is achieved through the following technical solution:

[0006] In a first aspect, embodiments of this application provide a guide roller, which includes a guide roller body and a wind baffle. The guide roller body is provided with multiple air outlets, which are distributed circumferentially along the guide roller body. Multiple air outlets in each air outlet are distributed axially along the guide roller body. The wind baffle is slidably disposed on the guide roller body along the axial direction of the guide roller body and is used to block a portion of the air outlets on the guide roller body.

[0007] In the technical solution of this application embodiment, multiple air outlets are provided on the roller body, and the multiple air outlets are arranged circumferentially along the roller body. Multiple air outlets in each row can blow air towards the electrode sheet. The wind baffle is slidably disposed on the roller body. By adjusting the position of the wind baffle, the wind baffle blocks the air outlets on the roller body corresponding to the coating area of ​​the electrode sheet, so that the air outlets on the roller body corresponding to the coating area of ​​the electrode sheet do not blow air. The air outlets on the roller body that are not blocked by the wind baffle can correspond to the blank area of ​​the electrode sheet, and the air outlets blow air towards the blank area of ​​the electrode sheet, providing a certain support force to the blank area of ​​the electrode sheet. This makes the tension on the coating area and the blank area in the width direction of the electrode sheet more uniform, reduces the risk of wrinkling of the electrode sheet during the belt conveyor process, reduces the number of times the production line is stopped due to the adjustment of the machine due to the wrinkling of the electrode sheet, and improves the continuity and stability of the battery production line. Furthermore, the wind deflector can slide along the axial direction of the roller body. By adjusting the position of the wind deflector relative to the roller body, it can be adapted to the needs of the blank areas at different positions of the electrode sheet, making it more flexible and applicable to a wider range of applications. Only the position of the wind deflector on the roller body needs to be adjusted accordingly.

[0008] According to some embodiments of this application, a plurality of grooves are provided on the outer peripheral surface of the roller body. The plurality of grooves are distributed at intervals along the circumference of the roller body. Each groove extends along the axial direction of the roller body. Each groove is provided with an exhaust port. The wind baffle is slidably disposed in the groove.

[0009] In the above scheme, by setting a groove on the roller body, the groove can slide and cooperate with the wind baffle to provide a guiding function for the wind baffle, the movement stability of the wind baffle is higher, and the wind baffle can be slidably set in the groove, the groove can accommodate the wind baffle, so that the wind baffle will not protrude from the outer circumference of the roller body, and the wind baffle will not interfere with the electrode sheet, which is beneficial to the feeding of the electrode sheet.

[0010] According to some embodiments of this application, there are multiple wind deflectors in each chute, and the multiple wind deflectors are distributed at intervals along the length of the chute.

[0011] In the above scheme, the number of wind deflectors is set to multiple, and the multiple wind deflectors can be arbitrarily combined and arranged in the slide groove. This can be used for different coating areas and electrode sheets of different widths. It is only necessary to increase or decrease the number of wind deflectors and adjust their positions, thus making it more widely applicable.

[0012] According to some embodiments of this application, the roller body includes a roller liner and a roller outer sleeve. The roller outer sleeve is fitted onto the roller liner, and multiple air outlets are disposed on the outer peripheral surface of the roller liner. The outer peripheral surface of the roller outer sleeve is provided with grooves for exposing the air outlets, and the number of grooves corresponds one-to-one with the number of multiple air outlets.

[0013] In the above solution, the roller body is divided into an inner roller liner and an outer roller sleeve. The outer roller sleeve is fitted onto the inner roller liner. Only the inner roller liner, the outer roller sleeve, and the windproof component need to be manufactured separately. The inner roller liner provides the function of air outlet, and the outer roller sleeve provides the function of chute and installation of windproof component. Compared with molding the roller in one piece, it is more conducive to the production of the roller and reduces the production difficulty of the roller.

[0014] According to some embodiments of this application, multiple air outlets in each row of air outlets are equally spaced along the axial direction of the roller liner.

[0015] In the above scheme, multiple air outlets are evenly distributed along the axial direction of the roller liner. Compared with multiple air outlets being randomly distributed along the axial direction of the roller liner, the distance between two adjacent air outlets is equal, and the distribution of air outlets is more regular. It is only necessary to reasonably select the number of wind baffles and adjust the installation position of the wind baffles to make it suitable for the conveyor belt of more different coating areas and different widths, thus having a wider range of applications.

[0016] According to some embodiments of this application, the chute extends at least through one axial end of the roller outer sleeve.

[0017] In the above design, the chute extends at least through one axial end of the roller outer sleeve, which facilitates the installation and removal of the wind baffle. When the wind baffle needs to be installed into the chute, it can be slid into the chute from the open end. When the wind baffle needs to be removed from the chute, it can be slid out directly from the open end, making the installation and removal of the wind baffle more convenient and quick.

[0018] According to some embodiments of this application, along the radial direction of the roller body, the outer peripheral surface of the roller outer sleeve protrudes from the side of the windbreak member away from the roller inner liner.

[0019] In the above scheme, the outer periphery of the roller jacket protrudes from the side of the wind baffle that is away from the roller liner. That is, the height of the wind baffle is lower than the height of the roller jacket. After the air blown out of the air outlet on the roller body that is not blown out by the wind baffle comes into contact with the blank area of ​​the electrode sheet, the air is more likely to disperse to both sides of the blank area of ​​the electrode sheet, which is more conducive to the smooth flow of the air blown out of the air outlet.

[0020] According to some embodiments of this application, the roller further includes a fastener disposed on the roller liner and at least at one end of the roller outer sleeve, the fastener being used to securely connect the roller liner and the roller outer sleeve.

[0021] In the above solution, by setting fasteners, the inner liner and outer liner of the roller can be firmly connected, so that the inner liner and outer liner of the roller are a whole, which improves the integrity and stability of the roller body and reduces the risk of relative rotation between the inner liner and outer liner of the roller.

[0022] According to some embodiments of this application, one axial end of the roller liner has an air inlet end for communicating with an air duct, and the roller liner has an inner cavity that communicates with both the air inlet end and the air outlet.

[0023] In the above scheme, the axial air inlet end of the roller liner is connected to the air duct, and the air duct provides air source to the air outlet of the roller. After the air enters the inner cavity of the roller liner from the air inlet end, it is discharged from the air outlet of the roller liner, so that the unblocked air outlet on the roller blows air toward the blank area of ​​the electrode sheet.

[0024] According to some embodiments of this application, the roller also includes a positioning element for limiting the sliding of the windbreak element within the chute.

[0025] In the above scheme, by setting the positioning component, the positioning component can restrict the sliding of the wind baffle in the chute, improve the installation stability of the wind baffle, and reduce the phenomenon of the wind baffle moving during the belt travel of the roller on the electrode sheet.

[0026] Secondly, embodiments of this application also provide a battery production line, which includes the rollers of any of the foregoing embodiments.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the roller provided in some embodiments of this application;

[0030] Figure 2 for Figure 1 Sectional view of AA;

[0031] Figure 3 A front view of the roller provided for some embodiments of this application;

[0032] Figure 4 for Figure 3 Sectional view of BB;

[0033] Figure 5 for Figure 3 Sectional view of CC;

[0034] Figure 6 This is a schematic diagram of the electrode sheet provided in some embodiments of this application.

[0035] Icons: 100-Passing roller; 10-Passing roller body; 11-Passing roller liner; 111-Inner cavity; 112-Air outlet; 113-Air inlet; 12-Passing roller outer sleeve; 121-Groove; 20-Wind deflector; 21-Slider body; 22-Extension; 30-Fastener; 200-Electrode sheet; 201-Coating area; 202-Blank area; X-Wide direction of the electrode sheet. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0038] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0041] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0042] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0043] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0044] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0045] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0046] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0047] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0048] In some embodiments, the battery device may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0049] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0050] The battery cell may be, but is not limited to, lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc.

[0051] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0052] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0053] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0054] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, as a metal foil, it can be made of stainless steel, copper, aluminum, carbon electrodes, carbon, nickel, or titanium with a silver-plated surface. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0055] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for battery cells may also be used.

[0056] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0057] As an example, the negative electrode current collector can be a metal foil or a composite current collector. For example, as a metal foil, it can be aluminum with a silver-plated surface, stainless steel with a silver-plated surface, copper, aluminum, carbon electrode, carbon, nickel, or titanium, etc.

[0058] In some embodiments, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0059] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cells. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. Silicon-based materials may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. Tin-based materials may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, this application is not limited to these materials, and other conventional materials that can be used as negative electrode active materials in battery cells may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0060] In some embodiments, the diaphragm is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0061] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.

[0062] In some embodiments, the membrane is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0063] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0064] In some implementations, the electrode assembly is a stacked structure.

[0065] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0066] In some embodiments, the housing includes an end cap and a casing, the casing having an opening, and the end cap closing the opening to form a sealed space for accommodating substances such as electrode assemblies and electrolytes. The casing may have one or more openings. The end cap may also be provided one or more times.

[0067] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab of the electrode assembly. The electrode terminal can be directly connected to the tab or indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing.

[0068] In some implementations, an explosion-proof valve is provided on the housing. The explosion-proof valve is used to release the internal pressure of the battery cells.

[0069] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. There are no particular limitations in the embodiments of this application.

[0070] In battery manufacturing, after the electrode is coated with intermittent material, during the conveyor belt process, the blank areas of the electrode are not coated with active material, and the thickness of the blank areas and the coated areas of the electrode is inconsistent. During the conveyor belt process, the blank areas and the coated areas of the electrode are subjected to different tensions, which makes the blank areas of the electrode prone to wrinkling.

[0071] In view of this, in order to solve the problem that wrinkles easily occur in the blank area of ​​the electrode sheet during the tape carrying process, some embodiments of this application provide a guide roller, which includes a guide roller body and a wind baffle. The guide roller body is provided with multiple air outlets, which are distributed at intervals along the circumference of the guide roller body. Multiple air outlets in each air outlet are distributed at intervals along the axial direction of the guide roller body. The wind baffle is slidably disposed on the guide roller body along the axial direction of the guide roller body and is used to block a portion of the air outlets on the guide roller body.

[0072] The roller provided in this application embodiment has multiple rows of air outlets arranged circumferentially on the roller body. Each row of air outlets can blow air towards the electrode sheet. A baffle is slidably disposed on the roller body. By adjusting the position of the baffle, the baffle blocks the air outlets on the roller body corresponding to the coating area of ​​the electrode sheet, so that the air outlets on the roller body corresponding to the coating area of ​​the electrode sheet do not blow air. The air outlets on the roller body that are not blocked by the baffle can correspond to the blank area of ​​the electrode sheet, and the air outlets blow air towards the blank area of ​​the electrode sheet, providing a certain support force to the blank area of ​​the electrode sheet. This makes the tension on the coating area and the blank area in the width direction of the electrode sheet more uniform, reducing the risk of wrinkling of the electrode sheet during the belt conveyor process.

[0073] This application provides a roller guide; please refer to... Figures 1 to 5 The roller 100 includes a roller body 10 and a baffle 20. The roller body 10 is provided with multiple air outlets 112, which are distributed circumferentially along the roller body 10. Multiple air outlets 112 in each row are distributed axially along the roller body 10. The baffle 20 is slidably disposed on the roller body 10 along the axial direction of the roller body 10 and is used to block a portion of the air outlets 112 on the roller body 10.

[0074] The guide roller 100 refers to a cylindrical, rotatable component on a machine, typically used to transmit or change the motion of an object. Specific applications of guide rollers include battery electrode manufacturing, where they can be used on battery production lines, acting as guide rollers for the electrode sheets 200 after coating and conveying the belt.

[0075] The air outlet 112 on the roller body 10 refers to an air outlet structure that can blow air towards the side away from the roller body 10. The air blown out by the air outlet 112 can act on the electrode 200 on the roller, providing support to the corresponding area of ​​the electrode 200.

[0076] The inside of the roller body 10 has an inner cavity 111. The air outlet 112 on the roller body 10 is connected to the inner cavity 111. One end of the roller body 10 has an air inlet 113 that is connected to the inner cavity 111. The air inlet 113 can be connected to an external blowing device. The air blown in from the air inlet 113 enters the inner cavity 111 and is blown out from the air outlet 112 of the roller body 10.

[0077] The wind deflector 20 refers to a wind deflector component installed on the roller body 10 that can block a portion of the air outlet 112 of the roller body 10. The number of wind deflectors 20 can be one or more, depending on the number of blank areas 202 of the electrode sheet 200.

[0078] The wind baffle 20 can be a ring structure, and the wind baffle 20 is sleeved on the outside of the roller body 10. Of course, the wind baffle 20 can be provided for each row of air outlets 112, that is, each row of air outlets 112 can be provided with at least one wind baffle 20. The wind baffle 20 can partially block the air outlets 112 of the corresponding row. Along the circumference of the roller body 10, multiple wind baffles 20 are provided on the roller body 10.

[0079] The wind deflector 20 can block the air outlet 112 on the roller body 10 corresponding to the coating area 201 of the electrode 200. In this way, the air outlet 112 of the roller body 10 that is not blocked by the wind deflector 20 can correspond to the blank area 202 of the electrode 200, providing support for the blank area 202 of the electrode 200.

[0080] The wind deflector 20 can slide along the axial direction of the roller body 10. The position of the wind deflector 20 can be adjusted to meet the needs of the electrode 200 in the blank area 202 at different positions. It is more flexible and has a wider range of applications. Only the position of the wind deflector 20 on the roller body 10 needs to be adjusted accordingly.

[0081] Please refer to Figure 6 The coated electrode 200 includes a coated area 201 and a blank area 202. The coated area 201 and the blank area 202 are arranged at intervals along the width direction X of the electrode. The coated area 201 is coated with active material, while the blank area 202 is not coated with active material. The thickness of the coated area 201 and the blank area 202 of the electrode 200 is inconsistent. The area of ​​the blank area 202 of the electrode 200 cannot make good contact with the roller, resulting in insufficient support of the blank area 202 of the electrode 200. The blank area 202 of the electrode 200 is prone to wrinkling.

[0082] In the technical solution of this application embodiment, multiple air outlets 112 are provided on the roller body 10. The multiple air outlets 112 are arranged circumferentially along the roller body 10. Each air outlet 112 can blow air towards the electrode 200. The wind baffle 20 on the roller body 10 is slidably disposed on the roller body 10. By adjusting the position of the wind baffle 20, the wind baffle 20 blocks the air outlets 112 on the roller body 10 corresponding to the coating area 201 of the electrode 200, so that the air outlets 112 on the roller body 10 corresponding to the coating area 201 of the electrode 200 are blocked. The air outlet 112 at the designated location does not blow air. The air outlet 112 on the roller body 10, which is not blocked by the baffle 20, corresponds to the position of the blank area 202 of the electrode 200. The air outlet 112 blows air towards the blank area 202 of the electrode 200, providing some support to the blank area 202. This makes the tension on the coating area and blank area 202 in the width direction X of the electrode more uniform, reducing the risk of wrinkling of the electrode 200 during conveyor belt transport, reducing the number of production line stops due to electrode wrinkling, and improving the continuity and stability of the battery production line. Furthermore, the baffle 20 is slidable along the axial direction of the roller body 10. By adjusting the position of the baffle 20 relative to the roller body 10, it can be adapted to the needs of different blank areas 202 of the electrode 200, offering greater flexibility and a wider range of applications. Only the position of the baffle 20 on the roller body 10 needs to be adjusted accordingly.

[0083] According to some embodiments of this application, please refer to Figure 1 and Figure 2 The outer circumferential surface of the roller body 10 is provided with a plurality of sliding grooves 121, which are distributed at intervals along the circumference of the roller body 10. Each sliding groove 121 extends along the axial direction of the roller body 10, and each sliding groove 121 is provided with an exhaust port 112. The wind baffle 20 is slidably disposed in the sliding groove 121.

[0084] The chute 121 refers to a guide structure installed on the roller body 10 that provides guidance to the wind deflector 20. The chute 121 can be T-shaped, dovetail-shaped, or I-shaped, etc. Taking an inverted T-shaped chute 121 as an example, the chute 121 includes a chute body and two branches, which are respectively connected to both ends of the chute body. The wind deflector 20 can be an inverted T-shaped slider; please refer to [reference needed]. Figure 4 The wind deflector 20 may include a slider body 21 and two extensions 22, which are located at both ends of the slider body 21. Correspondingly, the slider body 21 of the wind deflector 20 cooperates with the groove body, and the two extensions 22 of the wind deflector 20 extend into the two branches of the slide groove 121, thus improving the sliding stability of the wind deflector 20 within the slide groove 121.

[0085] The wind deflector 20 and the slide groove 121 can be positioned by static friction. Pushing the wind deflector 20 forces it to slide within the slide groove 121. Once the wind deflector 20 is in position, it is fixed relative to the slide groove 121. Alternatively, a positioning element can be installed on the roller body 10 to achieve the same positioning, depending on the specific circumstances.

[0086] The wind deflector 20 is slidably disposed within the groove 121, meaning that each groove 121 on the roller body 10 is provided with a wind deflector 20, and the wind deflector 20 is located within the groove 121. The area within the groove 121 where the wind deflector 20 is disposed corresponds to the area of ​​the coating area 201 of the electrode 200, and the area within the groove 121 where the wind deflector 20 is not disposed corresponds to the area of ​​the blank area 202 of the electrode 200. Since the air outlet 112 in the area within the groove 121 where the wind deflector 20 is not disposed is not blocked by the wind deflector 20, the air outlet 112 in this area can blow air toward the blank area 202 of the electrode 200, providing support for the electrode 200.

[0087] Each slide groove 121 is provided with at least one air outlet 112, meaning that each slide groove 121 may have one or more air outlets 112. For example, each slide groove 121 may have two air outlets 112. In this embodiment, each slide groove 121 is provided with one air outlet 112.

[0088] By setting the groove 121 on the roller body 10, the groove 121 can slide and cooperate with the wind baffle 20 to provide a guiding function for the wind baffle 20. The movement stability of the wind baffle 20 is higher. Moreover, the wind baffle 20 is slidably set in the groove 121. The groove 121 can accommodate the wind baffle 20, so that the wind baffle 20 will not protrude from the outer peripheral surface of the roller body 10. The wind baffle 20 will not interfere with the electrode sheet 200, which is beneficial to the belt travel of the electrode sheet 200.

[0089] According to some embodiments of this application, there are multiple wind deflectors 20 in each slide groove 121, and the multiple wind deflectors 20 are distributed at intervals along the length direction of the slide groove 121.

[0090] There can be multiple wind deflectors 20, such as two, three, or four, depending on the specific circumstances. In this embodiment, each groove 121 contains three wind deflectors 20.

[0091] The number of wind deflectors 20 can be set to multiple, and the multiple wind deflectors 20 can be arbitrarily combined and arranged in the slide groove 121. This can be used to cope with different coating areas 201 and electrode sheets 200 of different widths. It is only necessary to increase or decrease the number of wind deflectors 20 and adjust the position of the wind deflectors 20, so that the application range is wider.

[0092] According to some embodiments of this application, please refer to Figures 1 to 5 The roller body 10 includes a roller inner liner 11 and a roller outer liner 12. The roller outer liner 12 is fitted onto the roller inner liner 11. Multiple air outlets 112 are all provided on the outer peripheral surface of the roller inner liner 11. The outer peripheral surface of the roller outer liner 12 is provided with a groove 121 for exposing the air outlets 112. The number of grooves 121 corresponds one-to-one with the number of multiple air outlets 112.

[0093] The roller body 10 is composed of the inner roller liner 11 and the outer roller liner 12, which divides the roller body 10 into inner and outer parts. The inner roller liner 11 has a cylindrical structure, and several air outlets 112 are opened on the outer circumferential surface of the inner roller liner 11. The outer roller liner 12 is fitted onto the outer circumferential side of the inner roller liner 11. A groove 121 is opened on the outer roller liner 12, and at least a portion of the groove 121 penetrates the inner and outer circumferential surfaces of the outer roller liner 12. The air outlets 112 on the inner roller liner 11 can be exposed through the groove 121. The position of the groove 121 on the outer roller liner 12 corresponds to the position of the air outlets 112 on the inner roller liner 11.

[0094] The number of grooves 121 corresponds one-to-one with the number of multiple air vents 112, that is, each groove 121 corresponds one-to-one with each air vent 112.

[0095] The roller body 10 is divided into an inner roller liner 11 and an outer roller liner 12. The outer roller liner 12 is fitted onto the inner roller liner 11. Only the inner roller liner 11, the outer roller liner 12, and the wind baffle 20 need to be manufactured separately. The inner roller liner 11 provides the function of air outlet, and the outer roller liner 12 provides the function of slide groove 121 and installation of wind baffle 20. Compared with integral molding of the roller, it is more conducive to the production of the roller 100 and reduces the production difficulty of the roller 100.

[0096] According to some embodiments of this application, please refer to Figure 2 Multiple air outlets 112 in each air outlet 112 are equally spaced along the axial direction of the roller liner 11.

[0097] The multiple air outlets 112 in each row of air outlets 112 are equally spaced along the axial direction of the roller liner 11, which means that the distance between two adjacent air outlets 112 in each row of air outlets 112 is equal.

[0098] By distributing multiple air outlets 112 at equal intervals along the axial direction of the roller liner 11, compared to the irregular distribution of multiple air outlets 112 along the axial direction of the roller liner 11, the spacing between two adjacent air outlets 112 is equal, and the distribution of air outlets 112 is more regular. Only by reasonably selecting the number of wind baffles 20 and adjusting the installation position of the wind baffles 20, it can be applied to the conveyor belt of more different coating areas 201 and different widths of electrode sheets 200, thus having a wider range of applications.

[0099] According to some embodiments of this application, please refer to Figure 1 and Figure 3 The groove 121 extends through at least one axial end of the roller outer sleeve 12.

[0100] The groove 121 extends through at least one axial end of the roll outer sleeve 12, meaning that the groove 121 can extend through one axial end of the roll outer sleeve 12 or through both axial ends of the roll outer sleeve 12.

[0101] The chute 121 extends at least through one axial end of the roller sleeve 12, which facilitates the installation and removal of the wind baffle 20. When the wind baffle 20 needs to be installed into the chute 121, it can be slid into the chute 121 from its open end. When the wind baffle 20 needs to be removed from the chute 121, it can be slid out directly from its open end, making the installation and removal of the wind baffle 20 more convenient and quick.

[0102] According to some embodiments of this application, please refer to Figure 2 Along the radial direction of the roller body 10, the outer peripheral surface of the roller outer sleeve 12 protrudes from the side of the windbreak 20 away from the roller inner liner 11.

[0103] The outer peripheral surface of the roller jacket 12 protrudes from the side of the wind deflector 20 away from the roller liner 11. That is, when the wind deflector 20 is located inside the chute 121, the top surface of the wind deflector 20 does not protrude from the outer peripheral surface of the roller jacket 12. Of course, the outer peripheral surface of the roller jacket 12 can also be flush with the side of the wind deflector 20 away from the roller liner 11.

[0104] The outer periphery of the roller jacket 12 protrudes from the side of the wind baffle 20 away from the roller liner 11. That is, the height of the wind baffle 20 is lower than the height of the roller jacket 12. After the air blown out of the air outlet 112 on the roller body 10 that is not blown out by the wind baffle 20 comes into contact with the blank area 202 of the electrode 200, the air is more likely to disperse to both sides of the blank area 202 of the electrode 200, which is more conducive to the smooth flow of the air blown out of the air outlet 112.

[0105] According to some embodiments of this application, please refer to Figure 1 and Figure 3The roller 100 also includes a fastener 30, which is disposed on the roller inner liner 11 and at least at one end of the roller outer liner 12. The fastener 30 is used to fasten the roller inner liner 11 and the roller outer liner 12.

[0106] Fastener 30 refers to a fastening structure that can secure the roller outer sleeve 12. Fastener 30 can be a roller tightening screw. There can be two fasteners 30, with the two fasteners 30 respectively located at both ends of the roller outer sleeve 12.

[0107] By setting the fastener 30, the fastener 30 can securely connect the roller liner 11 and the roller outer sleeve 12, making the roller liner 11 and the roller outer sleeve 12 a whole, improving the integrity and stability of the roller body 10, and reducing the risk of relative rotation between the roller liner 11 and the roller outer sleeve 12.

[0108] According to some embodiments of this application, please refer to Figure 2 , Figure 3 and Figure 4 The roller liner 11 has an air inlet end 113 at one axial end, which is used to connect with the air duct. The roller liner 11 has an inner cavity 111 that is connected to both the air inlet end 113 and the air outlet 112.

[0109] The air inlet end 113 refers to the end of the roller liner 11 that connects to the air duct. An air valve can be installed on the air duct to control the air volume, thereby controlling the supporting force of the air outlet 112 of the roller 100 on the blank area 202 of the electrode 200.

[0110] The axial air inlet 113 of the roller liner 11 is connected to the air duct, which provides air source to the air outlet 112 of the roller. The air enters the inner cavity 111 of the roller liner 11 from the air inlet 113 and then exits from the air outlet 112 of the roller liner 11, so that the unblocked air outlet 112 on the roller blows air toward the blank area 202 of the electrode 200.

[0111] According to some embodiments of this application, the roller 100 also includes a positioning element (not shown in the figure) for limiting the sliding of the windbreak 20 within the groove 121.

[0112] The positioning element can be a fastening screw, which is threaded into the roller outer sleeve 12. When the wind deflector 20 is a T-shaped slider and the slide groove 121 is a T-shaped slide groove, and the wind deflector 20 includes a slider body 21 and two extensions 22, one end of the positioning element abuts against the extension 22 of the wind deflector 20 to restrict the wind deflector 20 from sliding within the slide groove 121. When the positioning element is loosened, the wind deflector 20 loses the holding force of the positioning element and can slide within the slide groove 121. There can be multiple positioning elements, which are spaced apart along the axial direction of the roller outer sleeve 12.

[0113] By setting the positioning component, the positioning component can restrict the sliding of the windshield 20 in the slide groove 121, improve the installation stability of the windshield 20, and reduce the phenomenon of the windshield 20 moving during the belt travel of the roller 100 on the electrode sheet 200.

[0114] This application also provides a battery production line, which includes the roller 100 of any of the foregoing embodiments.

[0115] In some embodiments, please refer to Figures 1 to 6 The roller 100 includes a roller body 10 and a baffle 20. The roller body 10 has multiple air outlets 112 spaced out circumferentially, and multiple outlets 112 within each outlet are spaced out axially. The baffle 20 is slidably mounted on the roller body 10 along its axial direction and blocks a portion of the outlets 112. The outer circumferential surface of the roller body 10 has multiple grooves 121 spaced out circumferentially, each groove extending axially and containing one outlet 112. The baffle 20 is slidably mounted within the groove. The roller body 10 includes a roller inner liner 11 and a roller outer liner 12. The roller outer liner 12 is fitted onto the roller inner liner 11. Multiple air outlets 112 are all provided on the outer peripheral surface of the roller inner liner 11. The outer peripheral surface of the roller outer liner 12 is provided with a groove 121 for exposing the air outlets 112. The number of grooves 121 corresponds one-to-one with the number of multiple air outlets 112.

[0116] Multiple air outlets 112 are provided on the roller body 10, arranged circumferentially along the roller body 10. Each air outlet 112 can blow air towards the electrode 200. A baffle 20 is slidably mounted on the roller body 10. Adjusting the position of the baffle 20 allows it to block the air outlets 112 on the roller body 10 corresponding to the coating area 201 of the electrode 200, thus preventing air from blowing towards the electrode 200. Without airflow, the air outlet 112 of the roller body 10, which is not blocked by the wind deflector 20, corresponds to the position of the blank area 202 of the electrode 200. The air outlet 112 blows air towards the blank area 202 of the electrode 200, providing a certain support force to the blank area 202 of the electrode 200. This makes the tension on the coating area and the blank area 202 in the width direction X of the electrode more uniform, reducing the risk of wrinkling of the electrode 200 during the conveyor belt process, reducing the number of production line stops due to electrode wrinkling, and improving the continuity and stability of the battery production line. Furthermore, the wind deflector 20 is slidable along the axial direction of the roller body 10. By adjusting the position of the wind deflector 20 relative to the roller body 10, it can be adapted to the needs of the blank area 202 at different positions of the electrode 200, providing greater flexibility and a wider range of applications. Only the position of the wind deflector 20 on the roller body 10 needs to be adjusted accordingly. The chute 121 can slide and engage with the baffle 20, providing a guiding function for the baffle 20. This improves the stability of the baffle 20's movement. Furthermore, the baffle 20 is slidably positioned within the chute 121, which accommodates it, preventing it from protruding from the outer circumference of the roller body 10 and avoiding interference with the electrode sheet 200, thus facilitating the feeding of the electrode sheet 200. The roller outer sleeve 12 is fitted onto the roller inner liner 11. Only the roller inner liner 11, roller outer sleeve 12, and baffle 20 need to be manufactured separately. The roller inner liner 11 provides airflow, while the roller outer sleeve 12 provides the chute 121 and the mounting space for the baffle 20. Compared to integrally molding the roller 100, this method is more conducive to the production of the roller 100 and reduces its manufacturing difficulty.

[0117] In some embodiments, a plurality of air outlets 112 in each air outlet 112 are equally spaced along the axial direction of the roller liner 11, and a groove 121 passes through one end of the roller outer sleeve 12 along the axial direction. Along the radial direction of the roller body 10, the outer peripheral surface of the roller outer sleeve 12 protrudes from the side of the wind deflector 20 away from the roller liner 11.

[0118] By distributing multiple air outlets 112 at equal intervals along the axial direction of the roller liner 11, compared to an irregular distribution of multiple air outlets 112 along the axial direction of the roller liner 11, the equal spacing between adjacent air outlets 112 and the more regular distribution of the air outlets 112 allow for wider applicability to various coating areas 201 and electrode sheets 200 with different widths, simply by selecting the appropriate number of baffles 20 and adjusting their installation positions. The groove 121 extends at least through one axial end of the roller outer sleeve 12, facilitating the installation and removal of the baffles 20. When it is necessary to install the baffles 20 into the groove 121, the baffles 20 can be slid into the groove 121 from its open end. When it is necessary to remove the wind baffle 20 from the slide groove 121, the wind baffle 20 can be slid out directly from the open end of the slide groove 121, making the installation and removal of the wind baffle 20 more convenient and quick. The outer peripheral surface of the roller outer sleeve 12 protrudes from the side of the wind baffle 20 away from the roller inner liner 11, that is, the height of the wind baffle 20 is lower than the height of the roller outer sleeve 12. After the air blown out of the air outlet 112 on the roller body 10 that is not blown out by the wind baffle 20 comes into contact with the blank area 202 of the electrode 200, the air is more easily dispersed to both sides of the blank area 202 of the electrode 200, which is more conducive to the smooth flow of the air blown out of the air outlet 112.

[0119] In some embodiments, the roller 100 further includes a fastener 30, which is disposed on the roller liner 11 and located at least at one end of the roller outer sleeve 12. The fastener 30 is used to securely connect the roller liner 11 and the roller outer sleeve 12. One axial end of the roller liner 11 has an air inlet end 113, which is used to communicate with an air duct. The roller liner 11 has an inner cavity 111 that communicates with both the air inlet end 113 and the air outlet 112.

[0120] Fastener 30 securely connects the inner liner 11 and the outer liner 12 of the roller, making them a single unit, thus improving the integrity and stability of the roller body 10 and reducing the risk of relative rotation between them. The air duct provides airflow to the outlet 112 of the roller. Air enters the inner cavity 111 of the inner liner 11 from the inlet 113 and then exits from the outlet 112, ensuring that the unobstructed outlet 112 on the roller blows air towards the blank area 202 of the electrode sheet 200.

[0121] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A roller, characterized in that, include: The roller body is provided with multiple rows of air outlets, the multiple rows of air outlets are distributed circumferentially along the roller body, and multiple air outlets in each row are distributed axially along the roller body. A wind deflector is slidably disposed on the roller body along the axial direction of the roller body, and the wind deflector is used to block a portion of the air outlet on the roller body.

2. The roller according to claim 1, characterized in that, The outer circumferential surface of the roller body is provided with a plurality of sliding grooves, which are distributed at intervals along the circumference of the roller body. Each sliding groove extends along the axial direction of the roller body, and a row of air outlets is provided in each sliding groove. The wind baffle is slidably disposed in the sliding groove.

3. The roller according to claim 2, characterized in that, The number of wind deflectors in each groove is multiple, and the multiple wind deflectors are distributed at intervals along the length of the groove.

4. The roller according to claim 2, characterized in that, The roller body includes a roller liner and a roller outer sleeve. The roller outer sleeve is fitted onto the roller liner, and the multiple rows of air outlets are all arranged on the outer circumferential surface of the roller liner. The chute is disposed on the outer sleeve of the roller, and at least a portion of the chute penetrates the inner and outer circumferential surfaces of the outer sleeve.

5. The roller according to claim 4, characterized in that, Multiple air outlets in each row are equally spaced along the axial direction of the roller liner.

6. The roller according to claim 4, characterized in that, The chute extends at least through one axial end of the roller jacket.

7. The roller according to claim 4, characterized in that, Along the radial direction of the roller body, the outer peripheral surface of the roller outer sleeve protrudes from the side of the windbreak member away from the roller inner liner.

8. The roller according to claim 4, characterized in that, The roller also includes: Fasteners are disposed on the inner liner of the roller and at least at one end of the outer liner of the roller, the fasteners being used to securely connect the inner liner of the roller to the outer liner of the roller.

9. The roller according to claim 4, characterized in that, The roller liner has an air inlet at one axial end, which is used to communicate with the air duct. The roller liner has an inner cavity that communicates with both the air inlet and the air outlet.

10. The roller according to claim 2, characterized in that, The roller also includes: A positioning element is provided to restrict the windshield from sliding within the groove.

11. A battery production line, characterized in that, Includes the roller according to any one of claims 1-10.

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