Oven, coating apparatus, and battery production system

Abstract

An oven (100), a coating apparatus (200), and a battery production system. The oven (100) comprises two layers of drying chambers (10) arranged adjacent to each other along a height direction of the oven (100), each layer of drying chamber (10) comprising a first drying zone (10a), a second drying zone (10b) and a first belt conveyor assembly (12a), the first drying zone (10a) and the second drying zone (10b) being disposed adjacent to each other in a longitudinal direction of the oven (100). The first belt conveyor assembly (12a) is provided in the first drying zone (10a) and arranged along a first belt conveyor path (a1), an orthographic projection of the first belt conveyor path (a1) onto a plane parallel to the height direction extending in a curving manner from one end of the first drying zone (10a) in the longitudinal direction to the other end thereof. The second drying zone (10b) of one of two adjacent layers of drying chambers (10) is arranged adjacent to the first drying zone (10a) of the other in the height direction, and the first drying zones (10a) of the two layers are separated from each other in the height direction and adjacent in the longitudinal direction. The described design greatly reduces floor space occupied by the oven (100), and also improves the space utilization rate of the oven (100) in the height direction.

Description

Ovens, coating devices and battery production systems

[0001] Cross-references

[0002] This application refers to Chinese Patent Application No. 2023221447927, filed on August 10, 2023, entitled “Oven, Coating Device and Battery Production System”, which is incorporated into this application in its entirety by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to an oven, a coating device, and a battery production system. Background Art

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0005] Electrode sheets are the core components of batteries. During production, active material slurry is coated onto a coiled substrate and then dried in an oven. Traditional ovens typically have a long drying path to prevent cracking in the coating layer, resulting in a large oven footprint.

[0006] Summary of the Invention

[0007] In view of the above problems, the present application provides an oven, a coating device and a battery production system, which can reduce the floor space occupied by the drying device.

[0008] In a first aspect, the present application provides an oven comprising at least two layers of drying chambers arranged adjacent to each other along the height direction of the oven, each layer of the drying chamber comprising a first drying zone, a second drying zone, and a first conveyor assembly, the first drying zone and the second drying zone being arranged adjacent to each other along the longitudinal direction of the oven. The first conveyor assembly is disposed in the first drying zone and arranged along a first conveyor path, the orthographic projection of the first conveyor path in a plane parallel to the height direction extending in a zigzag manner from one end of the first drying zone toward the other end in the longitudinal direction. In the two adjacent layers of drying chambers, the second drying zone of one is arranged adjacent to the first drying zone of the other in the height direction, and the first drying zones of the two are staggered in the height direction and adjacent to each other in the longitudinal direction.

[0009] In the technical solution of the embodiment of the present application, two layers of drying chambers are arranged vertically. This significantly shortens the vertical length of the oven, reducing its footprint, given a drying path of the same length. Secondly, a first conveyor assembly zigzagging within a plane parallel to the height direction is provided within the first drying zone, improving the drying path of the first drying zone and further shortening the vertical length of the oven, given a drying path of the same length. Thirdly, the interlocking connection between the two layers of drying chambers creates a compact oven structure. Compared to conventional horizontally arranged drying devices, this oven significantly reduces its footprint, given a drying path of the same length.

[0010] In some embodiments, the first drying zone is larger than the second drying zone in the same drying chamber in the height direction of the oven. In this case, the first drying zone provides more space for the tape run, which helps improve the space utilization of the oven in the height direction and shortens the tape run path of the first tape run assembly in the height direction.

[0011] In some embodiments, the first belt path has at least one crest and at least one trough, with the crests and troughs alternating in the longitudinal direction and adjacent crests and troughs staggered in the height direction. In this case, the first belt assembly is arranged along the first belt path that reciprocates in the height direction, creating a longer drying path within the limited space of the oven, thereby improving the drying path of the drying device and enhancing the drying efficiency and drying effect of the drying device.

[0012] In some embodiments, the first belt path includes multiple first path segments and at least one second path segment. The multiple first path segments are arranged adjacent to each other in the longitudinal direction, and each first path segment extends in the height direction. The second path segment is arranged between two adjacent first path segments. In this case, the first belt path extends approximately in a square wave shape in the height and longitudinal directions. The longer extension of the first belt path helps improve the drying path of the oven.

[0013] In some embodiments, the oven further includes a second conveyor assembly disposed within the second drying zone. The second conveyor assembly is arranged along a second conveyor path that extends linearly from one end of the second drying zone to the other end in the longitudinal direction. In this case, the second conveyor assembly extends substantially linearly along the second conveyor path, thereby accommodating the size requirements of the second drying zone and simplifying the internal structure of the second drying zone.

[0014] In some embodiments, each drying chamber includes an inlet and an outlet, which are arranged opposite each other in the longitudinal direction of the oven. In two adjacent drying chambers, the inlet of one and the outlet of the other are located on the same side of the oven. This allows the material strip to be transferred from one drying chamber to another adjacent drying chamber on the same side of the oven, making material transfer more convenient and simple. The same material strip can be transferred between different drying chambers, extending the drying route and improving drying efficiency.

[0015] In some embodiments, the first drying zone is connected to the outlet, and the second drying zone is connected to the inlet. In this case, in some cases, the material strip can first be guided horizontally by a second tape assembly within the second drying zone. Horizontal tape movement can reduce the risk of the coating layer on the material strip falling, shifting, or developing uneven thickness due to gravity. The second drying zone can be used to preliminarily dry the coating layer on the material strip, helping to improve the thickness uniformity of the material strip.

[0016] In some embodiments, the oven further comprises a drying assembly, and each drying chamber is provided with a drying assembly and a belt transport assembly. The belt transport assembly includes a first belt transport assembly. The drying assembly and the belt transport assembly within the same drying chamber are arranged opposite each other in a direction intersecting the belt transport path of the belt transport assembly. In this case, within the same drying chamber, the drying assembly and the belt transport assembly are arranged opposite each other along a first direction, with the drying assembly facing the material belt transported on the belt transport assembly. This provides a better drying effect on the material belt.

[0017] In some embodiments, in two adjacent drying chambers, the drying components of one chamber are arranged to face the front of the web located on the corresponding web path, while the drying components of the other chamber are arranged to face the back of the web located on the corresponding web path. This allows the oven to dry both sides of the web, making it suitable for coating equipment that performs double-sided coating.

[0018] In some embodiments, the tape transport assembly includes a plurality of rollers spaced apart along the tape transport path of the tape transport assembly. In this case, the tape transport assembly is formed by the rollers, which has a simple structure and can tension the tape through the rollers, thereby facilitating the transport of the tape.

[0019] In some embodiments, the drying assembly includes an air supply cavity and an air nozzle, which is disposed within the air supply cavity and opens toward the tape transport assembly. In this case, the drying assembly utilizes the air supply cavity and the air nozzle to divert air within the air supply cavity, thereby providing a wider drying range and higher energy efficiency.

[0020] In some embodiments, the oven includes an air inlet chamber and multiple branch air ducts, each of which is connected to the outlet of the air inlet chamber at one end and to at least one air supply cavity at the other end. In this case, a single air source can be used to simultaneously supply air to multiple air supply cavities, thereby reducing the number of air sources and lowering costs.

[0021] In some embodiments, the oven further includes a return air plenum that connects the various drying chambers, with the return air plenum and the inlet air plenum located on opposite sides of the oven widthwise. This placement of the return air plenum and the inlet air plenum on opposite sides of the oven can even out the oven's widthwise distribution, resulting in a more rational structural layout.

[0022] In some embodiments, the drying chambers are independent of each other, which can reduce the mutual interference between the two drying chamber environments and increase the adaptability of the oven to various scenarios.

[0023] In some embodiments, in two adjacent drying chambers, the first drying zone of the lower drying chamber includes a protrusion, which projects away from the upper drying chamber relative to the second drying zone. This further reduces the oven's footprint. Furthermore, the protrusion increases space in the first drying zone, improving the belt path of the first belt assembly and thereby extending the oven's drying path.

[0024] In a second aspect, the present application provides a coating device, comprising a coating apparatus and the above-mentioned oven.

[0025] In some embodiments, the coating device includes a front-side coating device and a back-side coating device, both of which are located on opposite sides of the oven in the longitudinal direction. Each drying chamber includes an inlet and an outlet, which are arranged opposite each other in the longitudinal direction of the oven. In two adjacent drying chambers, the inlet of one and the outlet of the other are located on the same side of the oven. The front-side coating device and the inlet on the same side of the oven are used to coat the front side of the material strip entering the inlet; the back-side coating device and the outlet on the same side of the oven are used to coat the back side of the material strip exiting the outlet.

[0026] In this case, the coating equipment can coat both the front and back sides of the strip, achieving double-sided coating of the strip. Moreover, the front and back sides of the strip are coated in separate steps, so the back side slurry can be applied after the front side slurry is completely dried, and the back side slurry can be completely dried, which helps to improve the drying effect of the strip.

[0027] In a third aspect, the present application provides a battery production system, which includes the above-mentioned coating equipment.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] FIG1 is a schematic diagram of the internal structure of a drying device according to one or more embodiments.

[0031] FIG2 is a schematic diagram of the application of the drying device described in FIG1 .

[0032] FIG3 is a schematic diagram showing the positions of the first direction and the tape running direction.

[0033] FIG. 4 is another application scenario diagram of the drying device shown in FIG. 1 .

[0034] FIG5 is a schematic diagram of the appearance of the drying device shown in FIG1 when viewed from the right.

[0035] FIG6 is a schematic structural diagram of a coating device according to one or more embodiments.

[0036] The accompanying drawings in the specific implementation manner are as follows:

[0037] 1000, coating equipment; 100, oven; Z, height direction; X, longitudinal direction; Y, first direction; F, tape run direction; G, first direction; 10, drying chamber; 11, upper drying chamber; 12, lower drying chamber; T, protrusion; K, avoidance space; I, entrance; O, exit; 10a, first drying zone; 10b, second drying zone; 12, tape run assembly; 12a, first tape run assembly; B1, peak; B2, trough; a1, first tape run path; a11, first path segment; a12, second path segment 12a, second conveyor assembly; b1, second conveyor path; 12a, roller; 13, drying assembly; 13a, air supply cavity; 13b, air nozzle; 14, air inlet chamber; 15, diversion air duct; 16, return air chamber; 16a, return air outlet; 17, exhaust fan; 18, circulating fan; 19, heat exchanger; 200, coating device; 210, front coating device; 220, back coating device; L, material strip; L1, front side; L2, back side; 300, winding mechanism; 400, unwinding mechanism. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of this application, the use of technical terms such as "first" and "second" is solely for distinguishing different objects and should not be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0041] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] In the description of the embodiments of this application, the term "and / or" is used to describe the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document, if it appears, generally indicates that the related objects are in an "or" relationship.

[0043] In the description of the embodiments of the present application, if it appears, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0044] In the description of the embodiments of the present application, if any, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0045] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0046]

[0047] A battery cell is the smallest unit of a battery, and the electrode sheet is the core component of the cell. The electrode sheets and separators are wound / stacked to form an electrode assembly, which is housed in a housing. The housing is then filled with electrolyte to create a battery cell. The electrode sheet typically consists of a substrate and active material coated on both sides of the substrate. The substrate must be conductive and capable of collecting current. The active material participates in an electrochemical reaction to generate an electric current.

[0048] During the electrode production process, the substrate strip is typically unwound through an unwinding mechanism. A slurry containing active materials is then applied to the substrate by a coating device. This is then dried in a drying device to solidify the active materials on the substrate before being reeled back into the reeling mechanism. Traditional drying devices typically convey the strip along a linear path in a horizontal plane. To mitigate issues such as poor drying or even cracking of the coating layer caused by excessive conveying speeds, these drying devices typically have long drying circuits, which occupies a large floor space.

[0049] To reduce the drying device's footprint, one could consider extending the drying path in the vertical direction, thereby shortening the horizontal path. Furthermore, one could consider converting a linear drying path into a curved one, further increasing the drying path length, thereby ensuring the drying efficiency while reducing the device's footprint. Furthermore, one could consider increasing the vertical space utilization of the single-layer drying chamber to further reduce the footprint.

[0050] Based on this, and to reduce the floor space of a drying device, an embodiment of the present application provides a drying device comprising at least two layers of drying chambers, each layer comprising a first drying zone and a second drying zone. A zigzagging first conveyor assembly is provided within the first drying zone. First, while maintaining a constant drying path, the multi-layer drying chamber structure shortens the longitudinal length of the drying oven. Second, the zigzagging first conveyor assembly within the first drying zone further improves the drying path of the first drying zone, further contributing to a reduction in the longitudinal length of the drying oven. This significantly reduces the floor space of the drying oven.

[0051] The drying device in the embodiment of the present application can be used to dry the electrode, and can also be used to dry other material strips such as coated plastic films, steel strips, etc. Of course, the drying device can also be used to dry uncoated material strips.

[0052] The drying device of the embodiment of the present application can be used in conjunction with a coating device to form a coating apparatus. The coating apparatus is used to form a stable coating on a strip substrate. The coating apparatus is used to apply a slurry to the substrate, and the drying apparatus can dry the slurry-coated strip to solidify the slurry and form a coating. In addition, the coating apparatus may also include a reeling mechanism and a reeling mechanism. Typically, the uncoated strip is unwound by the reeling mechanism, passed through the coating device and drying device, and then reeled into the reeling mechanism.

[0053] The battery production system disclosed in the embodiments of this application, including the above-mentioned coating equipment, can be used for coating production of electrode sheets. Of course, the battery production system may also include die-cutting equipment, slitting equipment, and correction equipment. For other specific configurations of the battery production system, please refer to the conventional settings.

[0054] The following is a detailed introduction to the oven provided in the embodiments of the present application.

[0055] Figure 1 is a schematic diagram of the internal structure of a drying device according to one or more embodiments. Figure 2 is a schematic diagram of the application of the drying device described in Figure 1.

[0056] According to one or more embodiments of the present application, referring to FIG. 1 and FIG. 2 , an oven 100 provided in an embodiment of the present application includes at least two layers of drying chambers 10 adjacently arranged along the height direction Z of the oven 100. Each layer of drying chambers 10 includes a first drying zone 10a, a second drying zone 10b, and a first tape transport assembly 12a. The first drying zone 10a and the second drying zone 10b are adjacently arranged along the longitudinal direction X of the oven 100. The first tape transport assembly 12a is disposed in the first drying zone 10a and arranged along a first tape transport path a1. The orthographic projection of the first tape transport path a1 in a plane parallel to the height direction Z extends in a zigzag manner from one end of the first drying zone 10a to the other end in the longitudinal direction. In the two adjacent layers of drying chambers 10, the second drying zone 10b of one layer is adjacently arranged along the height direction Z, and the first drying zones 10a of the two layers are staggered in the height direction Z and adjacent in the longitudinal direction X.

[0057] In the embodiment of the present application, the height direction Z of the oven 100 generally corresponds to the gravity direction, and the longitudinal direction X of the oven 100 generally corresponds to the length direction in the horizontal plane.

[0058] The drying chamber 10 is a cavity structure formed within the oven 100 that provides a drying area. The oven 100 includes at least two layers of drying chambers 10 arranged adjacent to each other in the height direction Z of the oven 100. In some embodiments, the oven 100 may include only two layers of drying chambers 10, and these two layers of drying chambers 10 meet the following condition: "In two adjacent layers of drying chambers 10, the second drying zone 10b of one is adjacent to the first drying zone 10a of the other in the height direction Z, and the first drying zones 10a of both are staggered in the height direction Z and adjacent in the longitudinal direction X." In other embodiments, the oven 100 may also include additional layers of drying chambers 10, with all layers of drying chambers 10 arranged sequentially in the height direction Z of the oven 100. Whether the specific structure of the additional layers of drying chambers 10 is the same as that of the two layers of drying chambers 10 is a matter of routine design by those skilled in the art. In other words, at least two adjacent layers of drying chambers 10 must meet these conditions. Of course, any two adjacent layers of drying chambers 10 may also meet these conditions.

[0059] The drying chambers 10 in at least two layers may be independent of each other and not directly connected, or they may be directly connected. In some embodiments, the two layers of drying chambers 10 are connected to each other, and the web L can be transported from one drying chamber 10 to the other drying chamber 10 through the connecting passage between the two layers of drying chambers 10.

[0060] At least two adjacent layers of drying chambers 10 each include a first drying zone 10a and a second drying zone 10b, which are arranged adjacent to each other in the longitudinal direction X of the oven 100. It is understood that the first drying zone 10a and the second drying zone 10b are interconnected to facilitate continuous conveyance of the material web L between the first drying zone 10a and the second drying zone 10b. Furthermore, a conveyor assembly 12 and a drying assembly 13 are typically provided within the first drying zone 10a and the second drying zone 10b. The conveyor assembly 12 is used to guide the material web L, and the drying assembly 13 is used to dry the material web L.

[0061] A first belt transport assembly 12a is provided within the first oven 100. The first belt transport assembly 12a is arranged along a first belt transport path a1. The first belt transport assembly 12a can be arranged continuously along the first belt transport path a1, i.e., the first belt transport assembly 12a is a continuous structure extending along the first belt transport path a1. In this case, the first belt transport assembly 12a can be a belt assembly, wherein the belt in the belt assembly is arranged continuously along the first belt transport path a1. The first belt transport assembly 12a can also be arranged intermittently along the first belt transport path a1, in which case the first belt transport assembly 12a can include a plurality of rollers 12A, which are arranged spaced apart from each other along the first belt transport path a1.

[0062] The plane parallel to the height direction Z is usually a vertical plane, and the orthographic projection of the first tape path a1 in the plane parallel to the height direction Z can be understood as the orthographic projection of the first tape path a1 on the vertical plane.

[0063] The orthographic projection extends in a zigzag manner from one end of the first drying zone 10a in the longitudinal direction X toward the other end. Usually, "the one end" and "the other end" are the entrance end and the exit end of the first drying zone 10a. That is to say, the first belt path a1 extends in a zigzag manner roughly from the entrance end of the first drying zone 10a toward its exit end.

[0064] "Zigzag extension" refers to a non-linear extension. While conventional belt transport assemblies are arranged along a linear horizontal path, the first belt transport assembly in this embodiment is arranged along a non-linear vertical path. Given the same starting and ending points, the first belt transport assembly provides a longer drying path.

[0065] For ease of description, one of the two adjacent drying chambers 10 is an upper drying chamber 11, and the other is a lower drying chamber 12, with the upper drying chamber 11 located above the lower drying chamber 12. The second drying zone 10b of the lower drying chamber 12 is located below the first drying zone 10a of the upper drying chamber 11, and the first drying zone 10a of the lower drying chamber 12 is located below the second drying zone 10b of the upper drying chamber 11.

[0066] The two second baking zones 10b are staggered in the height direction Z, which means that the highest point of the second baking zone 10b of the upper baking chamber 11 (usually its inner top wall) is higher than the highest point of the second baking zone 10b of the lower baking chamber 12 (usually its inner top wall), and the lowest point of the second baking zone 10b of the upper baking chamber 11 (usually its inner bottom wall) is higher than the lowest point of the second baking zone 10b of the lower baking chamber 12 (usually its inner bottom wall).

[0067] The two second baking zones 10b are adjacent in the longitudinal direction X, which means that their projections along the longitudinal direction X intersect. It can be understood that their projections along the longitudinal direction X do not overlap.

[0068] In other words, referring to Figure 1 , the first and second drying zones 10a, 10b of the upper drying chamber 11 enclose a downwardly open first space, which is located below the second drying zone 10b. The first and second drying zones 10a, 10b of the lower drying chamber 12 enclose an upwardly open second space, which is located above the second drying zone 10b. The first drying zone 10a of the upper drying chamber 11 is embedded in the second space, while the first drying zone 10a of the lower drying chamber 12 is embedded in the first space.

[0069] The above-described oven 100, with its two layers of drying chambers 10 arranged vertically, significantly shortens the longitudinal length of the oven 100, reducing the floor space occupied by the oven 100, given a drying path of the same length. Furthermore, the first conveyor assembly 12a, arranged within the first drying zone 10a and extending in a zigzag pattern parallel to the height direction Z, improves the drying path of the first drying zone 10a, further shortening the longitudinal length of the oven 100, given a drying path of the same length. Furthermore, the interlocking connection of the two layers of drying chambers 10 makes the oven 100 not only compact, but also significantly reduces the floor space occupied by the oven 100, compared to conventional horizontally arranged drying devices, given a drying path of the same length.

[0070] The "drying route" mentioned in the embodiments of the present application refers to the path that the material strip L needs to pass through when it is running in the drying oven 100. The "material strip L" refers to a strip-shaped, retractable structure.

[0071] In some embodiments, in the height direction Z of the oven 100 , the size of the first baking zone 10 a is greater than that of the second baking zone 10 b .

[0072] In the height direction Z, the first drying zone 10a is larger than the second drying zone 10b, that is, the first drying zone 10a is thicker than the second drying zone 10b. Typically, the second drying zone 10b is located on the top side or the bottom side of the first drying zone in the height direction Z.

[0073] Since the first drying zone 10a is relatively large in the height direction Z, when the first tape transport assembly 12a extends in the first drying zone 10a, the first tape transport assembly 12a can be arranged and guided in a wider range in the height direction Z.

[0074] At this time, the first baking zone 10a provides a higher conveyor space, which is beneficial to improving the space utilization of the oven 100 in the height direction Z, and improving the conveyor path of the first conveyor assembly 12a in the height direction Z, and can further improve the structural compactness of the oven 100.

[0075] In some embodiments, referring to FIG. 1 , the first tape path a1 has at least one crest portion B1 and at least one trough portion B2 , the crest portions B1 and the trough portions B2 are alternately arranged in the longitudinal direction Y, and adjacent crest portions B1 and trough portions B2 are staggered along the height direction.

[0076] The first conveyor path a1 extends in a zigzag pattern. Within a certain range, when the first conveyor path a1 curves upward in the height direction Z, the highest position within that range is the crest B1. Within a certain range, when the first conveyor path a1 curves downward in the height direction Z, the lowest position within that range is the trough B2.

[0077] Similar to a wave-like structure, the first tape path includes at least one peak B1 and at least one trough B2. The peaks B1 and troughs B2 are arranged alternately, that is, the peaks B1 and troughs B2 are arranged adjacent to each other. When there are multiple peaks B1, there are troughs B2 between the peaks B1; when there are multiple troughs B2, there are peaks B1 between the troughs B2.

[0078] When the first conveyor path a1 includes a crest portion B1 and a trough portion B2, at least a portion of the first conveyor path a1 is reciprocated in the height direction Z during its extension. In some embodiments, the first conveyor path a1 may be reciprocated multiple times in the height direction Z. The first conveyor path a1 may have a wavy, sawtooth, or square-wave-shaped waveform structure extending from the inlet end toward the outlet end of the first drying zone 10a.

[0079] At this time, the first conveyor assembly 12a is arranged along the first conveyor path a1 which is reciprocatingly arranged in the height direction Z. In the limited space of the oven 100, a longer drying route can be formed, which is beneficial to improving the drying route of the drying device and improving the drying efficiency and drying effect of the drying device.

[0080] It should be noted that the first conveying path a1 "is reciprocatingly arranged in the height direction Z" includes that part of the path rises completely straight along the height direction Z, and part of the path drops completely straight along the height direction Z (such as the first conveying path a1 is in the shape of a square wave); it also includes that part of the path rises at an angle to the height direction Z, and part of the path drops at an angle to the height direction Z (such as the first conveying path a1 is in the shape of a sawtooth wave or a sine wave).

[0081] In some embodiments, referring to FIG. 1 , the first tape path a1 includes multiple first path segments a11 and at least one second path segment a12 . The multiple first path segments a11 are adjacently arranged in the longitudinal direction X, and each first path segment a11 extends along the height direction Z. The second path segment a12 is disposed between two adjacent first path segments a11 .

[0082] The first path segment a11 is a path segment in the first tape path a1 that extends straight along the height direction Z. Two first path segments a11 are connected by a second path segment a12, which can be a straight segment (such as a horizontal segment) or a curved segment.

[0083] At this time, the first conveyor path a1 extends in a square wave shape substantially along the height direction Z and the longitudinal direction X. The extended length of the first conveyor path a1 is long, which helps to improve the drying route of the oven 100 .

[0084] In some embodiments, referring to FIG. 1 , the oven 100 further includes a second conveyor assembly 12b, which is disposed in the second baking zone 10b. The second conveyor assembly 12b is arranged along a second conveyor path b1, which extends in a straight line from one end of the second baking zone 10b in the longitudinal direction X toward the other end.

[0085] The second tape path b1 is a reference route for guiding the arrangement of the second tape assembly 12b and can be formed by the line along which the second tape assembly 12b is located. The second tape assembly 12b can be arranged continuously along the second tape path b1, that is, the second tape assembly 12b is a continuous structure extending along the second tape path b1. In this case, the second tape assembly 12b can be a belt assembly, and the belts in the belt assembly are arranged continuously along the second tape path b1. The second tape assembly 12b can also be arranged intermittently along the second tape path b1, in which case the second tape assembly 12b can include multiple rollers 12A, and the multiple rollers 12A are arranged at intervals along the second tape path b1.

[0086] The size of the second drying zone 10b in the height direction Z is smaller than that of the first drying zone 10a in the height direction Z, that is, the space for the tape to run in the height direction Z inside the second drying zone 10b is smaller.

[0087] At this time, the second tape assembly 12b extends substantially linearly along the second tape path b1, which can adapt to the size requirements of the second drying zone 10b and simplify the internal structure of the second drying zone 10b.

[0088] 1 and 2 , each drying chamber 10 includes an inlet I and an outlet O, which are disposed opposite each other in the longitudinal direction X of the oven 100. In two adjacent layers of drying chambers 10, the inlet I of one and the outlet O of the other are located on the same side of the oven 100.

[0089] In two adjacent layers of drying chambers 10, the inlet I of one layer of drying chambers 10 and the outlet O of the other layer of drying chambers 10 are located on the same side of the drying chamber 10 in the longitudinal direction X. The two adjacent layers of drying chambers 10 are respectively an upper drying chamber 11 and a lower drying chamber 12. One arrangement is: the inlet I of the upper drying chamber 11 and the outlet O of the lower drying chamber 12 are both located on the left side of the drying chamber 100 in the longitudinal direction X, and the outlet O of the upper drying chamber 11 and the inlet I of the lower drying chamber 12 are both located on the right side of the drying chamber 100 in the longitudinal direction X. Another arrangement is: the inlet I of the lower drying chamber 12 and the outlet O of the upper drying chamber 11 are both located on the left side of the drying chamber 100 in the longitudinal direction X, and the outlet O of the lower drying chamber 12 and the inlet I of the upper drying chamber 11 are both located on the right side of the drying chamber 100 in the longitudinal direction X.

[0090] In actual operation, the material strip L enters from the inlet I of one layer of the drying chamber 10, is dried, and is discharged from the outlet O of the drying chamber 10 of that layer. Then, the material strip L enters from the inlet I of another adjacent layer of the drying chamber 10, is dried, and is discharged from the outlet O of the adjacent layer of the drying chamber 10.

[0091] In this way, the material strip L can be transferred from one layer of drying chamber 10 to another adjacent layer of drying chamber 10 on the same side of the drying oven 100. The transfer of the material strip L is more convenient and simple, and the transfer of the same material strip L between different layers of drying chamber 10 can be realized, thereby extending the drying route of the material strip L and improving the drying efficiency of the material strip L.

[0092] In some embodiments, referring to Figures 1 and 2 , the first drying zone 10a is connected to the outlet O, and the second drying zone 10b is connected to the inlet I. That is, the first drying zone 10a is directly connected to the outlet O of the drying chamber 10 in its layer, and the material strip L enters the outlet O of the drying chamber 10 in that layer from the first drying zone 10a. The second drying zone 10b is directly connected to the inlet I of the drying chamber 10 in its layer, and the material strip L directly enters the second drying zone 10b of the drying chamber 10 in that layer from the inlet I.

[0093] At this time, in some cases, the material strip L can first be horizontally walked under the guidance of the second walking assembly 12b in the second drying area 10b. When walking horizontally, the risk of the coating layer on the material strip L falling / shifting / having different thicknesses under the action of gravity can be reduced. The second drying area 10b can be used to preliminarily dry the coating layer of the material strip L, which helps to improve the thickness uniformity of the material strip L.

[0094] In some embodiments, referring to Figures 1 and 2, the oven 100 further includes a drying component 13, and each drying chamber 10 is provided with a drying component 13 and a belt conveyor component 12. The belt conveyor component 12 includes a first belt conveyor component 12a. In the direction of the belt conveyor path intersecting with the belt conveyor component 12, the drying component 13 and the belt conveyor component 12 in the same drying chamber 10 are arranged opposite to each other.

[0095] The belt transport assembly 12 is used to transport the material L within the drying chamber 10 and may be a belt assembly, a roller assembly 12A, or the like. Each drying chamber 10 is provided with an independent belt transport assembly 12, which includes the aforementioned first belt transport assembly 12a. Furthermore, in some cases, the first belt transport assembly 12a also includes the aforementioned second belt transport assembly 12b.

[0096] The tape running direction F of the tape assembly 12 is the direction along its tape running path toward the exit O of each drying chamber 10. The direction intersecting the tape running path of the tape assembly 12 is defined as a first direction G. The first direction G may be substantially perpendicular to the tape running path, that is, the first direction G is substantially perpendicular to the tape running direction F.

[0097] The drying assembly 13 is used to dry the material strip L and may be a resistance wire heater, an air heater, or the like. Each drying chamber 10 is provided with a drying assembly 13. Multiple drying assemblies 13 may be provided in each drying chamber 10. Multiple drying assemblies 13 are arranged along the conveyor assembly 12. Drying assemblies 13 are provided in both the first drying zone 10a and the second drying zone 10b.

[0098] At this time, in the same drying chamber 10, the drying assembly 13 and the belt conveyor assembly 12 are arranged opposite to each other along the first direction G. The drying assembly 13 faces the material belt L on the belt conveyor assembly 12, and the drying assembly 13 has a better drying effect on the material belt L.

[0099] Within the same drying chamber 10, the drying components 13 can be arranged on the same side of the belt conveyor assembly 12 in the first direction G, or on both sides of the first direction G. When the drying components 13 are arranged on the same side of the belt conveyor assembly 12 in the first direction G, the drying components 13 dry only the same surface of the material web L within the drying chamber 10, thus achieving single-sided drying. When the drying components 13 are arranged on both sides of the belt conveyor assembly 12 in the first direction G, the drying components 13 can dry both the front side L1 and the back side L2 of the material web L within the drying chamber 10, thus achieving double-sided drying.

[0100] In some embodiments, referring to Figures 1 and 2, in two adjacent layers of drying chambers 10, the drying components 13 of one are configured to be arranged toward the front side L1 of the material belt L located on the corresponding belt path, and the drying components 13 of the other are configured to be arranged toward the back side L2 of the material belt L located on the corresponding belt path.

[0101] That is, in each layer of the drying chamber 10 , the drying components 13 dry the same side of the material strip L, and the drying components 13 in the two layers of the drying chamber 10 dry two different surfaces of the material strip L respectively.

[0102] For example, in the upper drying chamber 11, the drying assembly 13 dries the front side L1 of the material strip L. This includes the drying assemblies 13 in the first drying zone 10a and the second drying zone 10b in the upper drying chamber 11 drying the front side L1 of the material strip L. In the lower drying chamber 12, the drying assembly 13 dries the back side L2 of the material strip L. This includes the drying assemblies 13 in the first drying zone 10a and the second drying zone 10b in the lower drying chamber 12 drying the back side L2 of the material strip L.

[0103] FIG3 is a schematic diagram showing the positions of the first direction G and the running direction F. FIG.

[0104] In combination with the first direction G, as shown in Figure 3, looking at the conveying direction F of the conveying assembly 12 of each drying chamber 10, if the drying assembly 13 of the upper drying chamber 11 is located on the left-hand side of the first direction G perpendicular to its conveying path, then the drying assembly 13 of the lower drying chamber 12 is located on the right-hand side of the first direction G perpendicular to its conveying path.

[0105] The material strip L has two surfaces (a front surface L1 and a back surface L2 ) disposed opposite to each other, and one or both of the two surfaces can be coated.

[0106] Figure 4 illustrates another application scenario of the drying apparatus shown in Figure 1. In one application, referring to Figure 4 , after a web L enters the inlet I of the lower drying chamber 12, its front surface L1 is dried. Upon exiting the lower drying chamber 12 through the outlet O, the web L flips 180 degrees before entering the inlet I of the upper drying chamber 11. The back surface L2 of the web L is then dried by the drying assembly 13 in the upper drying chamber 11. In the embodiment shown in Figure 2 , the lower drying chamber 12 can be used to dry the front surface L1 of one web L, while the upper drying chamber 11 can be used to dry the back surface L2 of another web L.

[0107] In this way, the oven 100 can achieve double-sided drying of the material strip L, so that the oven 100 is suitable for the coating equipment 1000 for double-sided coating.

[0108] In some embodiments, referring to FIG. 1 , FIG. 2 and FIG. 4 , the tape transport assembly 12 includes a plurality of rollers 12A, and the plurality of rollers 12A are arranged at intervals along the tape transport path of the tape transport assembly 12 .

[0109] The rollers 12A are cylindrical or cylindrical structures that can rotate, and the rotation axes of the rollers 12A are generally parallel to each other. The rollers 12A are arranged at intervals along the tape path of the tape assembly 12 .

[0110] The first tape transport assembly 12a and the second tape transport assembly 12b may be composed of a plurality of rollers 12A.

[0111] The tape transport assembly 12 is formed by the rollers 12A. The tape transport assembly 12 has a simple structure and can tension the material strip L through the rollers 12A, which is beneficial for the transportation of the material strip L.

[0112] In some embodiments, referring to FIG. 1 , FIG. 2 and FIG. 4 , the drying assembly 13 includes an air supply cavity 13 a and an air nozzle 13 b . The air nozzle 13 b is disposed in the air supply cavity 13 a and opens toward the tape transport assembly 12 .

[0113] The air supply cavity 13a is a cavity structure having an air circulation cavity therein. Typically, the air supply cavity 13a is used to circulate air. Specifically, a heating device may be provided within the air supply cavity 13a, or a heating device may be provided outside the air supply cavity 13a to heat the air circulated therein.

[0114] The nozzles 13b are used to spray air from the air supply cavity 13a toward the tape deck 12, facilitating precise air delivery. Each drying assembly 13 includes multiple nozzles 13b, all arranged along the outer perimeter of the air supply cavity 13a. The nozzles 13b are primarily located on the outer perimeter of the air supply cavity 13a facing the tape deck 12.

[0115] At this time, the drying component 13 cooperates with the air supply cavity 13a and the air nozzle 13b, and uses the air nozzle 13b to divert the air in the air supply cavity 13a. The drying range of the drying component 13 is large and the energy efficiency is high.

[0116] FIG5 is a schematic diagram of the appearance of the drying device shown in FIG1 when viewed from the right.

[0117] 5 , in combination with FIG. 1 , the oven 100 includes an air inlet chamber 14 and a plurality of branch air ducts 15 , one end of each branch air duct 15 being connected to the outlet O of the air inlet chamber 14 and the other end being connected to at least one air supply cavity 13 a.

[0118] Typically, one or more air inlet chambers 14 are provided. The air inlet chambers 14 collect air (which may have a certain temperature), which then flows through their outlets O into the various branch air ducts 15 and ultimately into the various air supply cavities 13a. The air inlet chambers 14 can be a separate structure mounted on the oven 100 or integrally formed within a structure of the oven 100. Typically, the air inlet chambers 14 are tubular.

[0119] Each branch air duct 15 may have one or more outlets O, each outlet O of which is connected to a corresponding air supply cavity 13a. All air supply cavities 13a of the oven 100 may be connected to the same air inlet chamber 14 to achieve unified air supply. Alternatively, some air supply cavities 13a may be connected to the air inlet chamber 14, while the remaining air supply cavities may be connected to another air inlet chamber 14.

[0120] In this case, the same air source can be used to supply air to multiple air supply cavities 13a at the same time, which can reduce the number of air sources and reduce costs.

[0121] Continuing with FIG5 , oven 100 may further include a heat exchanger 19, a circulating fan 18, and the like. Heat exchanger 19 and circulating fan 18 are connected to air inlet chamber 14. Heat exchanger 19 heats air entering air inlet chamber 14, while circulating fan 18 forces air to flow through heat exchanger 19 and into air inlet chamber 14. The specific configurations of heat exchanger 19 and circulating fan 18 can be conventionally selected.

[0122] In some embodiments, referring to FIG. 5 , the oven 100 further includes a return air chamber 16 , which is connected to each layer of the drying chambers 10 . The return air chamber 16 and the air inlet chamber 14 are located on opposite sides of the oven 100 in the width direction.

[0123] The width direction of the oven 100 is substantially perpendicular to its height direction Z and longitudinal direction X. The return air chamber 16 can be a separate structure provided on the oven 100, or can be integrally formed by a certain structure of the oven 100. Typically, the return air chamber 16 is a tubular structure.

[0124] 5 , the return air chamber 16 is connected to an exhaust fan 17. Under the action of the exhaust fan 17, the gas in each drying chamber 10 enters the return air chamber 16 and is finally discharged from the drying oven 100. A return air port 16a (as shown in FIG. 1 , FIG. 2 , and FIG. 4 ) can be provided on the wall of each drying chamber 10, and the drying chamber 10 is connected to the return air chamber 16 through the return air port 16a.

[0125] The return air plenum 16 and the inlet air plenum 14 are located on opposite sides of the width of the oven 100. Specifically, the return air plenum 16 is located on one side of the width of the oven 100, and the inlet air plenum 14 is located on the other side. It should be noted that when multiple return air plenums 16 are provided, all return air plenums 16 are located on the same side of the width of the oven 100. Similarly, when multiple inlet air plenums 14 are provided, all inlet air plenums 14 are located on the same side of the width of the oven 100. Typically, only one return air plenum 16 and one inlet air plenum 14 are provided.

[0126] Typically, the diverter duct 15 is positioned on the side of each air supply cavity 13a facing the return air chamber 16. This allows the diverter duct 15 to be relatively short. In the embodiment shown in FIG5 , the air inlet chamber 14 is positioned on the left side of the oven 100, the return air chamber 16 is positioned at the rear of the oven 100, and the diverter duct 15 is positioned on the left side of the drying chamber 10.

[0127] The return air chamber 16 and the inlet air chamber 14 are arranged on opposite sides of the oven 100, which can homogenize the structural distribution in the width direction of the oven 100 and make the structural arrangement more reasonable.

[0128] In actual application, with the cooperation of the circulation fan 18 and the exhaust fan 17, the air circulates inside and outside the drying chamber 10.

[0129] In the above embodiment, the return air chamber 16 and the inlet air chamber 14 can realize unified air supply / return of each drying chamber 10, which can simplify the structure of the drying oven 100 and reduce the cost of the drying oven 100. Of course, in other embodiments, each drying chamber 10 can also have independent air supply / return.

[0130] In some embodiments, as shown in Figures 1, 2, and 4, each drying chamber 10 is independent of the others. That is, the two layers of drying chambers 10 are not connected to each other. This can, in some cases, reduce interference between the two layers of drying chambers 10 and increase the adaptability of the oven 100 to various scenarios.

[0131] In some embodiments, referring to Figures 1, 2, and 4, in the two-layer drying chamber 10, the first drying zone 10a of the lower drying chamber 10 includes a protrusion T, which is protruded relative to the second drying zone 10b and away from the upper drying chamber 10.

[0132] The protrusion T helps define the interior space of the first drying zone 10a of the lower drying chamber 10 (i.e., the lower drying chamber 12). The space within the protrusion T is used for accommodating the first tape deck assembly 12a. The protrusion T protrudes toward the first drying zone 10a of the lower drying chamber 12 and forms a clearance space K with the first drying zone 10a.

[0133] In actual use, since the protrusion T protrudes toward the second drying zone 10b of the lower drying chamber 12 and is supported on the ground, the drying oven 100 only contacts the ground through the protrusion T. The avoidance space K formed by the protrusion T and the second drying zone 10b can be used for other purposes, such as for the movement of a transport vehicle.

[0134] In this way, the floor space of the oven 100 can be further reduced. At the same time, the protrusion T can also increase the space of the first drying zone 10a, improve the belt path of the first belt assembly 12a, and thus extend the drying route of the oven 100.

[0135] In one embodiment of the present application, referring to FIG1 , an oven 100 includes two layers of drying chambers 10 adjacently arranged along a height direction Z of the oven 100. Each layer of drying chambers 10 includes a first drying zone 10a, a second drying zone 10b, a first tape transport assembly 12a, and a second tape transport assembly 12b. The first drying zone 10a and the second drying zone 10b are adjacently arranged along a longitudinal direction X of the oven 100. In the height direction Z of the oven 100, the first drying zone 10a is larger than the second drying zone 10b. The first tape transport assembly 12a is disposed in the first drying zone 10a and arranged along a first tape transport path a1. The first tape transport path a1 extends from one end of the first drying zone 10a in the longitudinal direction to the other end and reciprocates in the height direction Z of the oven 100 during the extension process. In two adjacent layers of drying chambers 10, the second drying zone 10b of one is adjacent to the first drying zone 10a of the other in the height direction Z. The first drying zones 10a of the two drying chambers are staggered in the height direction Z and adjacent in the longitudinal direction X. The second tape transport assembly 12b is disposed within the second drying zone 10b and arranged along a second tape transport path b1. The second tape transport path b1 extends linearly from one end of the second drying zone 10b in the longitudinal direction X to the other end.

[0136] FIG6 is a schematic structural diagram of a coating apparatus 1000 according to one or more embodiments.

[0137] In addition, referring to FIG6 , an embodiment of the present application further provides a coating apparatus 1000 comprising a coating device 200 and the aforementioned oven 100. The coating device 200 is used to apply a slurry layer to a material strip L. Conventional options can be employed for the specific construction of the coating device 200. As described above, the coating apparatus 1000 may further comprise a winding mechanism 300 and an unwinding mechanism 400. The coating apparatus 1000 includes all of the aforementioned beneficial effects, which will not be elaborated upon herein.

[0138] In some embodiments, with continued reference to FIG6 , the coating device 200 includes a front-side coating device 210 and a back-side coating device 220 , both of which are located on opposite sides of the oven 100 in the longitudinal direction X. Each drying chamber 10 includes an inlet I and an outlet O, which are arranged opposite each other in the longitudinal direction X of the oven 100. In the two-layer drying chamber 10, the inlet I of one and the outlet O of the other are located on the same side of the oven 100. The front-side coating device 210 and the inlet I located on the same side of the oven 100 are used to perform a coating operation on the front side L1 of the material strip L entering the inlet I; the back-side coating device 220 and the outlet O located on the same side of the oven 100 are used to perform a coating operation on the back side L2 of the material strip L exiting the outlet O.

[0139] Please refer to the conventional configuration for the specific configurations of the front coating device 210 and the back coating device 220. The front coating device 210 is used to coat the front surface L1 of the material strip L, and the back coating device 220 is used to coat the back surface L2 of the material strip L. The front surface L1 and back surface L2 of the material strip L are two surfaces disposed opposite to each other in the thickness direction of the material strip L.

[0140] For example, the front coating device 210 is used to coat the front side L1 of the material strip L before the entrance I of the lower drying chamber 12 , and the back coating device 220 is used to coat the back side L2 of the material strip L after exiting the exit O of the lower drying chamber 12 .

[0141] The drying chamber 10 with the inlet I and the front coating device 210 located on the same side is used to dry the front side L1 of the material strip L, and the drying chamber 10 with the inlet I and the back coating device 220 located on the same side is used to dry the back side L2 of the material strip L.

[0142] At this time, the coating device 1000 can coat both the front side L1 and the back side L2 of the material strip L, thereby achieving double-sided coating of the material strip L. Moreover, the coating of the front side L1 and the back side L2 of the material strip L is performed in steps. The slurry on the back side L2 can be applied after the slurry on the front side L1 is completely dried, and the slurry on the back side L2 is completely dried, which helps to improve the drying effect of the material strip L.

[0143] Of course, in other embodiments, the coating device 200 may also include only the front-side coating device 210 or only the back-side coating device 220 , or the front-side coating device 210 and the back-side coating device 220 may be arranged at different positions.

[0144] In addition, an embodiment of the present application also provides a battery production system, which includes the above-mentioned coating device 1000.

[0145] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0146] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An oven comprising: At least two layers of baking chambers are arranged adjacent to each other along the height direction of the baking oven, each of the baking chambers comprising: A first baking zone and a second baking zone, both of which are arranged adjacent to each other along the longitudinal direction of the oven; A first tape transport assembly is provided in the first baking area and arranged along a first tape transport path; an orthographic projection of the first tape transport path in a plane parallel to the height direction extends in a zigzag manner from one end of the first baking area in the longitudinal direction toward the other end; Among them, in two adjacent layers of the baking chamber, the second baking area of ​​any one is arranged adjacent to the first baking area of ​​the other in the height direction, and the first baking areas of the two are staggered in the height direction and adjacent in the longitudinal direction.

2. The oven according to claim 1, wherein: In the height direction of the oven, in the same baking chamber, the size of the first baking zone is greater than the size of the second baking zone.

3. The oven according to claim 1 or 2, wherein: The first tape path has at least one crest portion and at least one trough portion, the crest portions and the trough portions are alternately arranged in the longitudinal direction, and adjacent crest portions and trough portions are staggered along the height direction.

4. The oven according to claim 3, wherein: The first tape path includes a plurality of first path segments and at least one second path segment, the plurality of first path segments are adjacently arranged in the longitudinal direction, and each of the first path segments is extended along the height direction; The second path segment is arranged between two adjacent first path segments.

5. The oven according to any one of claims 1 to 4, wherein: The oven further comprises a second belt conveyor assembly, wherein the second belt conveyor assembly is arranged in the second baking zone; The second tape transport assembly is arranged along a second tape transport path, and the second tape transport path extends in a straight line from one end of the second baking zone in the longitudinal direction toward the other end.

6. The oven according to any one of claims 1 to 5, wherein: Each of the baking chambers comprises an inlet and an outlet, and the inlet and the outlet are arranged opposite to each other in the longitudinal direction of the oven; In two adjacent layers of the baking chambers, the inlet of any one and the outlet of the other are located on the same side of the oven.

7. The oven according to claim 6, wherein: In each of the baking chambers, the first baking area is communicated with the outlet, and the second baking area is communicated with the inlet.

8. The oven according to any one of claims 1 to 7, wherein: The oven further comprises a drying assembly and a belt conveyor assembly, wherein the belt conveyor assembly comprises the first belt conveyor assembly; The drying assembly and the belt-moving assembly are arranged in each of the drying chambers. In the direction of the belt-moving path intersecting the belt-moving assembly, the drying assembly and the belt-moving assembly in the same drying chamber are arranged opposite to each other.

9. The oven according to claim 8, wherein: In two adjacent layers of the drying chambers, the drying components of one are configured to be arranged toward the front side of the material belt located at the corresponding tape path, and the drying components of the other are configured to be arranged toward the back side of the material belt located at the corresponding tape path.

10. The oven according to claim 8 or 9, wherein: The tape transport assembly includes a plurality of rollers, and the plurality of rollers are arranged at intervals along a tape transport path of the tape transport assembly.

11. The oven according to any one of claims 8 to 10, wherein: The drying component comprises an air supply cavity and an air nozzle, wherein the air nozzle is arranged in the air supply cavity and opens toward the belt conveyor component.

12. The oven according to claim 11, wherein The oven comprises an air inlet chamber and a plurality of branch air ducts, one end of each of the branch air ducts is connected to the outlet of the air inlet chamber, and the other end is connected to at least one of the air supply cavities.

13. The oven according to claim 12, wherein: The oven further comprises a return air chamber, and the return air chamber is connected to the baking chambers of each layer; The return air chamber and the inlet air chamber are respectively located at opposite sides of the oven in the width direction.

14. The oven according to any one of claims 1 to 13, wherein: The baking chambers are independent of each other.

15. The oven according to any one of claims 1 to 14, wherein: In two adjacent layers of the baking chambers, the first baking area of ​​the baking chamber located at the bottom includes a protruding portion, and the protruding portion is arranged to protrude relative to the second baking area and away from the baking chamber located at the top.

16. A coating device, comprising a coating apparatus and the oven according to any one of claims 1 to 15.

17. The coating apparatus according to claim 16, wherein: The coating device comprises a front coating device and a back coating device, which are located on opposite sides of the oven in the longitudinal direction; Each of the baking chambers comprises an inlet and an outlet, and the inlet and the outlet are arranged opposite to each other in the longitudinal direction of the oven; in two adjacent layers of the baking chambers, the inlet of any one and the outlet of the other are located on the same side of the oven; The front coating device and the entrance are located on the same side of the oven, and the front coating device is used to perform coating operations on the front side of the material strip entering the entrance; the back coating device and the exit are located on the same side of the oven, and the back coating device is used to perform coating operations on the back side of the material strip exiting the exit.

18. A battery production system comprising the coating device according to claim 16 or 17.

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