Air nozzle device, oven and battery production line

Abstract

The application relates to the technical field of battery manufacturing, and provides a blast nozzle device, an oven and a battery production line. The blast nozzle device comprises a shell, the shell extends along a first direction, and the shell is provided with a blast cavity for gas circulation; the shell has a first wall, the first wall is provided with a plurality of blast holes in communication with the blast cavity; at least one blast plate assembly movably connected with the shell, the blast plate assembly comprises a guide vane corresponding to the first wall, the guide vane is provided with a first blast flow channel and a second blast flow channel for blowing air to two thinning areas of the paste coated on the to-be-dried piece respectively, the first blast flow channel and the second blast flow channel are arranged at intervals along the first direction and extend along a second direction intersecting the first direction; wherein the first blast flow channel and the second blast flow channel extend obliquely along a third direction opposite to the first wall and form an acute angle with the third direction. Through the technical scheme, the risk of paste cracking in the thinning area can be reduced.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, specifically to a nozzle device, an oven, and a battery production line. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] The coating process is a core step in the front-end process of battery device production. It is the next step after the slurry is homogenized. Its purpose is to uniformly coat the positive and negative electrode material slurry onto the electrode foil and dry the solvent in the slurry.

[0004] However, conventional coating ovens typically use fixed air nozzles, which result in unadjustable hot air distribution and poor drying uniformity. This makes the thinned areas of the coating slurry prone to shrinkage stress cracks due to localized overheating or temperature gradients. Utility Model Content

[0005] The purpose of this application is to provide a nozzle device, an oven, and a battery production line to reduce the risk of stress cracking in the thinned zone of the coating slurry. This objective is achieved through the following technical solution:

[0006] In a first aspect, this application provides a nozzle device for an oven, the nozzle device comprising: a housing extending along a first direction, the housing having an air cavity for gas flow, and the housing having a first wall having a plurality of air outlets communicating with the air cavity; at least one air plate assembly movably connected to the housing, the air plate assembly including an air guide plate corresponding to the first wall, the air guide plate having a first air outlet channel and a second air outlet channel for blowing air onto two thinning zones of a slurry coated on a workpiece to be dried, the first air outlet channel and the second air outlet channel being spaced apart along the first direction and both extending along a second direction intersecting the first direction; wherein, the first air outlet channel extends obliquely from one end toward the first wall to the other end toward the second air outlet channel, and forms a first acute angle with a third direction perpendicular to the first wall, the second air outlet channel extends obliquely from one end toward the first wall to the other end toward the first air outlet channel, and forms a second acute angle with the third direction.

[0007] According to the nozzle device provided in this application, an air deflector assembly is provided on one side of the housing with an air outlet. The air deflector assembly includes an air guide plate corresponding to the position of the first wall of the housing, and the air deflector assembly can reciprocate relative to the housing in a first direction. A first air outlet channel and a second air outlet channel are provided at intervals on the air guide plate, and the first air outlet channel and the second air outlet channel respectively correspond to two thinning areas of the slurry coated on the workpiece to be dried (e.g., an electrode). The surface of the workpiece to be dried is coated with slurry, the middle of the slurry is a coating area, and the thinning areas are located on both sides of the width direction of the coating area. The slurry thickness in the thinning areas is lower than the slurry thickness in the middle coating area. Since the first and second air outlet channels are inclined relative to the direction perpendicular to the first wall, when the air in the air cavity passes through the air outlet, it will then pass through the first and second air outlet channels on the air guide plate, and then be blown towards the thinning area of ​​the coating slurry. The angle of the air blowing towards the thinning area is inclined towards the thinning area, so that the air volume can be reduced in a stepwise manner from one side of the thinning area close to the coating area to the other side to dry the slurry in the thinning area. In this way, the risk of stress concentration caused by the air blowing towards the thinning area and cracking of the slurry in the thinning area can be reduced, thereby improving the production quality of the parts to be dried.

[0008] In addition, the nozzle device provided in this application may also have the following additional technical features:

[0009] In some embodiments of this application, the housing is provided with sliding joints on both sides along the second direction, the air guide plate is provided with connecting plates on both sides along the second direction, and both connecting plates are provided with sliding joint mating parts, which are slidably connected to the sliding joints.

[0010] In the above technical solution, by providing sliding joints on both sides of the housing along the second direction, and providing sliding joint mating parts on the connecting plates on both sides of the air guide plate along the second direction, the sliding joint mating parts and the sliding joints are connected to each other, so that the air guide plate can reciprocate relative to the housing along the first direction, so as to adjust the position of the air guide plate.

[0011] In some embodiments of this application, the connecting plate includes a first plate and a second plate. One side of the first plate is connected to the air guide plate, and the other side of the first plate is connected to the second plate. The sliding engagement portion is provided at the end of the second plate away from the first plate. The first plate and the air guide plate are set at an obtuse angle.

[0012] In the above technical solution, the connecting plate includes a first plate and a second plate connected to each other. The first plate is connected to the air guide plate, and the second plate is connected to the side of the first plate away from the air guide plate. By setting the first plate and the air guide plate at an obtuse angle, it is convenient for the sliding mating part on the second plate to slide with the sliding part on the shell, thereby helping to improve the assembly efficiency of the product.

[0013] In some embodiments of this application, the air guide plate is integrally formed with the two connecting plates.

[0014] In the above technical solution, the air guide plate and the two connecting plates are integrally formed, eliminating the need for assembly and making assembly convenient.

[0015] In some embodiments of this application, one of the sliding joint and the sliding mating joint includes a slide rail, and the other includes a slide groove, wherein the slide rail and the slide groove are slidably connected.

[0016] In the above technical solution, the sliding joint is a slide rail and the sliding mating part is a slide groove, or the sliding joint is a slide groove and the sliding mating part is a slide rail. The slide rail and the slide groove are slidably connected, so that the wind plate assembly can slide back and forth relative to the shell in the first direction. The structure and principle are relatively simple and easy to implement.

[0017] In some embodiments of this application, the first acute angle and / or the second acute angle are set in the range of 15° to 30°.

[0018] In the above technical solution, by setting the angle of at least one of the first acute angle and the second acute angle within the range of 15°-30°, not only can the air passing through the first air outlet channel or the second air outlet channel be tilted towards the surface of the workpiece to be dried, thereby reducing the risk of cracking of the slurry in the thinning area due to wind stress concentration, but also the risk of the tilt angle being too large and the air not being able to be blown towards the thinning area due to the size limitation of the air guide plate.

[0019] In some embodiments of this application, the nozzle device further includes a wind speed sensor and a control device. The wind speed sensor is disposed in the air cavity and is used to detect the wind speed at the air outlet. The control device is electrically connected to the wind speed sensor and the oven.

[0020] In the above technical solution, by setting up a control device and a wind speed sensor for detecting the wind speed at the air outlet, the wind speed sensor is electrically connected to the control device. The control device can control the oven to adjust the air intake volume according to the detected wind speed at the air outlet, so as to realize the automated control of the product.

[0021] In some embodiments of this application, the nozzle device further includes a first temperature sensor and a second temperature sensor, both of which are electrically connected to the control device and are used to detect the temperature of the coating area and the thinning area of ​​the slurry applied to the workpiece to be dried, respectively.

[0022] In the above technical solution, by adding a first temperature sensor and a second temperature sensor, both of which are electrically connected to the control device, the first and second temperature sensors respectively detect the temperature of the coating area and the thinning area of ​​the slurry applied to the workpiece to be dried. The control device controls the air blowing speed of the oven in real time based on the detected temperatures of the coating area and the thinning area of ​​the slurry applied to the workpiece to be dried. This can maintain the temperature gradient of each area of ​​the slurry within a reasonable range, reducing cracking problems caused by local overheating or excessively rapid cooling.

[0023] In some embodiments of this application, there are multiple air deflector assemblies, which are spaced apart along the first direction and are all movably connected to the housing.

[0024] In the above technical solution, by setting the number of air plate assemblies to multiple and arranging the multiple air plate assemblies at intervals along the first direction in the housing, multiple air plate assemblies can blow air onto multiple parts to be dried to dry the slurry coated on the parts to be dried, thereby improving the production efficiency of the parts to be dried.

[0025] Secondly, this application provides an oven including a nozzle device as described in any one of the embodiments of the first aspect.

[0026] The oven provided in the second aspect of this application includes the air nozzle device described in any one of the first aspect embodiments, and therefore has the technical effects of any of the above embodiments, which will not be repeated here.

[0027] Thirdly, this application provides a battery production line, including the oven described in the second aspect of the embodiment.

[0028] The battery production line provided in the third aspect of this application includes the oven described in the second aspect of the embodiment, and therefore has the technical effects of any of the above embodiments, which will not be repeated here.

[0029] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 A schematic diagram of the structure of a nozzle device provided in some embodiments of this application from one perspective;

[0032] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0033] Figure 3 This is a schematic diagram of the structure of the air deflector assembly provided in some embodiments of this application;

[0034] Figure 4 A cross-sectional view of the air guide plate provided in some embodiments of this application;

[0035] in, Figure 1 In the coordinate system, the X-axis represents the first direction, the Y-axis represents the second direction, and the Z-axis represents the third direction.

[0036] The attached figures are labeled as follows:

[0037] 100. Air nozzle device;

[0038] 10. Housing; 20. Air vane assembly;

[0039] 11. First wall; 111. Air outlet; 12. Sliding joint;

[0040] 21. Air guide plate; 211. First air outlet channel; 212. Second air outlet channel; 22. First plate; 23. Second plate; 24. Sliding joint. Detailed Implementation

[0041] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0044] In this document, the term "embodiment" means that a particular 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 separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0046] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0047] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0048] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0049] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0050] Among them, the coating process is the core step in the front-end process of battery device production. It is the next step after the slurry is homogenized. Its purpose is to uniformly coat the positive and negative electrode material slurry onto the foil and dry the solvent in the slurry.

[0051] However, conventional coating ovens typically use fixed nozzles, which result in unadjustable hot air distribution and poor drying uniformity. The slurry coated on the foil has a coating area and a thinning area. The thinning area is located on both sides of the width of the coating area. Since the slurry thickness in the thinning area is thinner than that in the coating area, shrinkage stress cracks are easily generated in the thinning area of ​​the coating slurry due to local overheating or temperature gradient.

[0052] To address the problem of shrinkage stress cracks caused by localized overheating or temperature gradients in the thinned area of ​​the coating slurry, this application designs a nozzle device comprising a housing and at least one air vane assembly. The housing extends along a first direction, and the air vane assembly is movably connected to the housing. An air cavity is defined within the housing, and the housing has a first wall with an array of air outlet holes. The air vane assembly includes a guide plate, which is positioned opposite the first wall and has a first air outlet channel and a second air outlet channel spaced apart along the first direction. The first and second air outlet channels extend along a second direction intersecting the first direction. The first air outlet channel extends obliquely towards the second air outlet channel from one end toward the first wall, forming a first acute angle with a third direction perpendicular to the first wall. The second air outlet channel extends obliquely towards the first air outlet channel from one end toward the first wall, forming a second acute angle with the third direction. This technical solution reduces the risk of localized cracking in the thinned area due to concentrated airflow.

[0053] The nozzle device disclosed in this application is used in an oven in a battery production line, where the oven is used to dry the slurry coated on the surface of foil.

[0054] According to some embodiments of this application, this application provides an oven, which includes an air inlet duct and two air nozzle devices. The two air nozzle devices are arranged opposite to each other, and the air inlet duct is connected to the two air nozzle devices. The two air nozzle devices are used to blow air to both sides of the workpiece in the thickness direction to dry the slurry coated on the surface of the workpiece.

[0055] For example, the air inlet duct is equipped with a flow regulating valve.

[0056] In some embodiments, the oven further includes a conveying mechanism for conveying items to be dried.

[0057] The oven provided in the second aspect of this application includes the air nozzle device described in any one of the first aspect embodiments, and therefore has the technical effects of any of the above embodiments, which will not be repeated here.

[0058] According to some embodiments of this application, this application also provides a battery production line, including the oven described in the above embodiments.

[0059] Please see Figures 1 to 4 , Figure 1 A schematic diagram of the structure of a nozzle device provided in some embodiments of this application from one perspective; Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle; Figure 3 This is a schematic diagram of the structure of the air deflector assembly provided in some embodiments of this application; Figure 4 This is a cross-sectional structural schematic diagram of an air guide plate provided in some embodiments of this application. According to some embodiments of this application, an air nozzle device 100 is provided for an oven. The air nozzle device 100 includes a housing 10 and at least one air plate assembly 20. The housing 10 extends along a first direction, and an air cavity is provided within the housing 10 for gas flow. The housing 10 has a first wall 11, and the first wall 11 has a plurality of air outlet holes 111 communicating with the air cavity. The air deflector assembly 20 is movably connected to the housing 10. The air deflector assembly 20 includes an air guide plate 21 corresponding to the first wall 11. The air guide plate 21 is provided with a first air outlet channel 211 and a second air outlet channel 212 for blowing air onto two thinning areas of the slurry coated on the workpiece to be dried. The first air outlet channel 211 and the second air outlet channel 212 are spaced apart along a first direction and both extend along a second direction intersecting the first direction. The first air outlet channel 211 extends obliquely toward the first wall 11 from one end to the other toward the direction close to the second air outlet channel 212 and forms a first acute angle with a third direction perpendicular to the first wall 11. The second air outlet channel 212 extends obliquely toward the first wall 11 from one end to the other toward the direction close to the first air outlet channel 211 and forms a second acute angle with a third direction.

[0060] For example, the housing 10 is a cuboid structure with a hollow interior, defining an air outlet cavity. The air outlet cavity is used to connect with the air inlet duct of the oven.

[0061] For example, the coated element in this application is an electrode sheet, which includes a foil and a paste (active material) coated on the foil.

[0062] Understandably, the first wall 11 is oriented toward the part to be dried. Multiple air outlets 111 are arranged in an array on the first wall 11.

[0063] Specifically, the surface of the part to be dried is coated with a slurry, the middle of the slurry is the coating area, and the thinning area is located on both sides of the width of the coating area. The thickness of the slurry in the thinning area is lower than the thickness of the slurry in the middle coating area.

[0064] For example, the first direction is the length direction of the housing 10, the second direction is the width direction of the housing 10, and the third direction is the thickness direction of the housing 10.

[0065] Understandably, both the first air outlet duct 211 and the second air outlet duct 212 are defined with channels for gas flow, and the extension directions of the first air outlet duct 211 and the second air outlet duct 212 are at acute angles to the third direction.

[0066] For example, both the first air outlet channel 211 and the second air outlet channel 212 penetrate the air guide plate 21 and are formed by milling a portion of the air guide plate 21.

[0067] For example, the air deflector assembly 20 is slidably connected to both sides of the housing 10 along the second direction.

[0068] By providing a wind deflector assembly 20 on one side of the housing 10 with an air outlet 111, the wind deflector assembly 20 includes an air guide plate 21 corresponding to the position of the first wall 11 of the housing 10, and the wind deflector assembly 20 is capable of reciprocating relative to the housing 10 in a first direction. By providing a first air outlet channel 211 and a second air outlet channel 212 at intervals on the air guide plate 21, and making the first air outlet channel 211 and the second air outlet channel 212 respectively correspond to two thinning areas of the slurry coated on the part to be dried (e.g., an electrode sheet), since the extending directions of the first air outlet channel 211 and the second air outlet channel 212 are perpendicular to each other, The air is inclined to the direction of the first wall 11. Therefore, when the air in the air cavity passes through the air outlet 111, it will pass through the first air outlet channel 211 and the second air outlet channel 212 on the air guide plate 21, and then blow towards the thinning area of ​​the coating slurry. The angle of the air blowing towards the thinning area is inclined towards the thinning area, so that the air volume can be reduced in a stepwise manner from one side of the thinning area close to the coating area to the other side to dry the slurry in the thinning area. In this way, the risk of stress concentration caused by the air blowing towards the thinning area and cracking of the slurry in the thinning area can be reduced, thereby improving the production quality of the parts to be dried.

[0069] Please see Figure 2 and Figure 3According to some embodiments of this application, the housing 10 is provided with sliding joints 12 on both sides along the second direction, and the air guide plate 21 is provided with connecting plates on both sides along the second direction. The connecting plates are provided with sliding joints 24, and the sliding joints 24 are slidably connected to the sliding joints 12.

[0070] By providing sliding joints 12 on both sides of the housing 10 along the second direction, and providing sliding joint mating parts 24 on the connecting plates provided on both sides of the air guide plate 21 along the second direction, the sliding joint mating parts 24 and the sliding joints 12 are connected to each other, so that the air guide plate 21 can reciprocate relative to the housing 10 along the first direction, so as to adjust the position of the air guide plate 21.

[0071] Please see Figure 3 According to some embodiments of this application, the connecting plate includes a first plate 22 and a second plate 23. One side of the first plate 22 is connected to the air guide plate 21, and the other side of the first plate 22 is connected to the second plate 23. The end of the second plate 23 facing away from the first plate 22 is provided with a sliding fit part 24. The first plate 22 and the air guide plate 21 are set at an obtuse angle.

[0072] For example, the included angle between the first plate 22 and the air guide plate 21 is set in the range of 100° to 120°. The second plate 23 may be set perpendicular to the first plate 22.

[0073] The connecting plate includes a first plate 22 and a second plate 23 connected to each other. The first plate 22 is connected to the air guide plate 21, and the second plate 23 is connected to the side of the first plate 22 away from the air guide plate 21. By setting the first plate 22 and the air guide plate 21 at an obtuse angle, it is easy for the sliding mating part 24 on the second plate 23 to slide with the sliding part 12 on the housing 10, thereby helping to improve the assembly efficiency of the product.

[0074] According to some embodiments of this application, the air guide plate 21 is integrally disposed with the two connecting plates.

[0075] The air guide plate 21 is integrally formed with the two connecting plates, eliminating the need for assembly and making product assembly easier.

[0076] According to some embodiments of this application, one of the sliding joint 12 and the sliding mating joint 24 includes a slide rail and the other includes a slide groove, with the slide rail and the slide groove being slidably connected.

[0077] That is, the sliding joint 12 is a slide rail and the sliding mating part 24 is a slide groove, or the sliding joint 12 is a slide groove and the sliding mating part 24 is a slide rail. The slide rail and the slide groove are slidably connected, so that the wind plate assembly 20 can slide back and forth relative to the housing 10 in the first direction. The structure and principle are relatively simple and easy to implement.

[0078] According to some embodiments of this application, the first acute angle and / or the second acute angle are set in the range of 15° to 30°.

[0079] By setting at least one of the first acute angle α and the second acute angle β within the range of 15°-30°, not only can the air passing through the first air outlet channel 211 or the second air outlet channel 212 be tilted towards the surface of the workpiece to be dried, thereby reducing the risk of cracking of the slurry in the thinned area due to wind stress concentration, but also the risk of the slurry not being able to be blown towards the thinned area due to excessive tilt angle and the limitation of the size of the air guide plate 21.

[0080] According to some embodiments of this application, the nozzle device 100 further includes a wind speed sensor (not shown in the figure) and a control device (not shown in the figure). The wind speed sensor is disposed in the air cavity and is used to detect the wind speed at the air outlet 111. The control device is electrically connected to the wind speed sensor and the oven.

[0081] Understandably, the control device may be electrically connected to a flow regulating valve on the air inlet duct of the oven. The control device may include a programmable controller.

[0082] By setting up a control device and a wind speed sensor for detecting the wind speed at the air outlet 111, the wind speed sensor is electrically connected to the control device. The control device can adjust the air intake of the oven according to the detected wind speed at the air outlet 111, so as to realize the automated control of the product.

[0083] According to some embodiments of this application, the nozzle device 100 further includes a first temperature sensor (not shown in the figure) and a second temperature sensor (not shown in the figure). Both the first temperature sensor and the second temperature sensor are electrically connected to the control device and are used to detect the temperature of the coating area and the thinning area of ​​the slurry applied to the workpiece to be dried, respectively.

[0084] For example, a bracket may be provided on the housing 10, and the first temperature sensor and the second temperature sensor may be disposed on the bracket.

[0085] By adding a first temperature sensor and a second temperature sensor, both of which are electrically connected to the control device, the temperatures of the coating area and the thinning area of ​​the slurry applied to the workpiece to be dried are detected by the first and second temperature sensors, respectively. The control device controls the air blowing speed of the oven in real time based on the detected temperatures of the coating area and the thinning area of ​​the slurry applied to the workpiece to be dried. This allows the temperature gradient of each area of ​​the slurry to be maintained within a reasonable range, reducing cracking problems caused by local overheating or excessively rapid cooling.

[0086] According to some embodiments of this application, there are multiple air deflector assemblies 20, which are spaced apart along a first direction and are all movably connected to the housing 10.

[0087] By setting the number of air plate assemblies 20 to multiple, and arranging the multiple air plate assemblies 20 at intervals along the first direction in the housing 10, multiple air plate assemblies 20 can blow air onto multiple parts to be dried to dry the slurry coated on the parts to be dried, thereby improving the production efficiency of the parts to be dried.

[0088] In some embodiments, the housing 10 is provided with a first fixing member and a second fixing member on opposite sides along the second direction, and the first fixing member and the second fixing member are used to connect with an external structure to fix the housing 10.

[0089] According to some embodiments of this application, see Figures 1 to 4 This application provides a nozzle device 100 for an oven. The nozzle device 100 includes a housing 10 and a plurality of air vane assemblies 20. The housing 10 extends along a first direction, and the air vane assemblies 20 are movably connected to the housing 10. An air cavity is defined inside the housing 10, and the housing 10 has a first wall 11 with an array of air outlet holes 111. The plurality of air vane assemblies 20 are spaced apart along the first direction and are all slidably connected to both sides of the housing 10 along a second direction. Each air vane assembly 20 includes a guide plate 21, which is opposite to the first wall 11 and has a first air outlet channel 211 and a second air outlet channel 211 spaced apart along the first direction. The two air outlet channels 212, the first air outlet channel 211 and the second air outlet channel 212 extend along a second direction intersecting the first direction. The first air outlet channel 211 extends inclined towards the second air outlet channel 212 from one end toward the first wall 11 to the other end, forming a first acute angle with a third direction perpendicular to the first wall 11. The second air outlet channel 212 extends inclined towards the first air outlet channel 211 from one end toward the first wall 11 to the other end, forming a second acute angle with a third direction. Through the technical solution of this application, the risk of local cracking caused by concentrated wind force in the thinned area can be reduced.

[0090] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A nozzle device for an oven, characterized in that, The air nozzle device includes: A housing extending along a first direction, the housing having an air cavity for gas circulation, and the housing having a first wall having a plurality of air outlets communicating with the air cavity; At least one air deflector assembly is movably connected to the housing. The air deflector assembly includes an air guide plate corresponding to the first wall. The air guide plate is provided with a first air outlet channel and a second air outlet channel for blowing air onto two thinning zones of the slurry coated on the workpiece to be dried. The first air outlet channel and the second air outlet channel are spaced apart along the first direction and both extend along a second direction intersecting the first direction. The first air outlet channel extends at an angle from one end toward the first wall to the other end toward the second air outlet channel, forming a first acute angle with a third direction perpendicular to the first wall. The second air outlet channel extends at an angle from one end toward the first wall to the other end toward the first air outlet channel, forming a second acute angle with the third direction.

2. The nozzle device according to claim 1, characterized in that, The housing is provided with sliding joints on both sides along the second direction, and the air guide plate is provided with connecting plates on both sides along the second direction. Both connecting plates are provided with sliding joints, and the sliding joints are slidably connected to the sliding joints.

3. The nozzle device according to claim 2, characterized in that, The connecting plate includes a first plate and a second plate. One side of the first plate is connected to the air guide plate, and the other side of the first plate is connected to the second plate. The sliding joint is provided at the end of the second plate away from the first plate. The first plate and the air guide plate are set at an obtuse angle.

4. The nozzle device according to claim 2, characterized in that, The air guide plate is integrally formed with the two connecting plates.

5. The nozzle device according to claim 2, characterized in that, One of the sliding joint and the sliding mating joint includes a slide rail, and the other includes a slide groove, wherein the slide rail and the slide groove are slidably connected.

6. The nozzle device according to any one of claims 1-5, characterized in that, The first acute angle and / or the second acute angle are set in the range of 15° to 30°.

7. The nozzle device according to any one of claims 1-5, characterized in that, The air nozzle device also includes a wind speed sensor and a control device. The wind speed sensor is located inside the air cavity and is used to detect the wind speed at the air outlet. The control device is electrically connected to the wind speed sensor and the oven.

8. The nozzle device according to claim 7, characterized in that, The nozzle device also includes a first temperature sensor and a second temperature sensor, both of which are electrically connected to the control device and are used to detect the temperature of the coating area and the thinning area of ​​the slurry applied to the workpiece to be dried, respectively.

9. The nozzle device according to claim 8, characterized in that, The number of the air deflector assemblies is multiple, and the multiple air deflector assemblies are spaced apart along the first direction and are all movably connected to the housing.

10. An oven, characterized in that, The nozzle device includes any one of claims 1-9.

11. A battery production line, characterized in that, Includes the oven as described in claim 10.

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