Air nozzle, drying equipment and battery production system

Abstract

The utility model provides an air nozzle, drying equipment and a battery production system, and belongs to the technical field of batteries. The tuyere comprises a body, a flow guide assembly and an air outlet plate. An air duct is defined in the body and comprises an air inlet end and an air outlet end which are in fluid communication with each other. The flow guide assembly is arranged in the body and used for defining a plurality of air outlet channels at the air outlet end of the air channel. The air outlet plate is detachably connected with the air outlet end, the air outlet plate is provided with an air outlet part, and the air outlet part is used for being communicated with at least one of the multiple air outlet ducts to achieve air blowing. According to the air nozzle, the drying requirements of different battery pole pieces can be met, the adaptability and switching efficiency of the air nozzle are improved, and then the overall production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a tuyere, a drying device and a battery production system. BACKGROUND

[0002] A battery pole piece is one of the components of a battery. In the production process of the battery pole piece, a slurry containing active material is coated on a current collector to obtain a battery pole piece. The slurry contains a certain amount of water, which will affect the performance and service life of the battery. Therefore, the drying process of the battery pole piece is an important process in the production process of the battery pole piece.

[0003] In some cases, the drying method of the battery pole piece is to blow hot air to the battery pole piece by the tuyere, so as to remove the water in the slurry by the hot air, so as to achieve the purpose of drying the battery pole piece. However, the tuyere is difficult to meet the drying needs of different battery pole pieces. CONTENT OF THE INVENTION

[0004] The present application aims to at least solve one of the technical problems in the background art. To this end, one object of the present application is to provide a tuyere, a drying device and a battery production system to improve the adaptability of the tuyere.

[0005] The embodiment of the first aspect of the present application provides a tuyere, comprising: a body, a flow guide assembly and an air outlet plate. The body defines an air duct inside, and the air duct comprises an air inlet end and an air outlet end which are in fluid communication with each other. The flow guide assembly is arranged in the body, and the flow guide assembly is used to define a plurality of air outlet air ducts at the air outlet end of the air duct. The air outlet plate is detachably connected with the air outlet end, and the air outlet plate is provided with an air outlet portion for communicating with at least one of the plurality of air outlet air ducts to realize air blowing.

[0006] In the technical solution of the embodiment of the present application, different air outlet plates are replaced to communicate different air outlet air ducts, so that switching between multiple air outlet forms can be realized. Different air outlet forms correspond to different air outlet positions. Therefore, for different battery pole pieces, only the corresponding air outlet plate needs to be replaced, without the need to replace the whole tuyere, so as to meet the drying needs of different battery pole pieces, improve the adaptability and switching efficiency of the tuyere, and further improve the overall production efficiency.

[0007] In some embodiments, the air outlet end extends along a first direction, and the plurality of air outlet air ducts are arranged in sequence along a second direction perpendicular to the first direction. The air outlet directions of at least two air outlet air ducts are different. Thus, the diversity of air outlet forms is further improved to meet the drying needs of different battery pole pieces.

[0008] In some embodiments, the number of air outlet plates connected to the air outlet end is multiple, and the multiple air outlet plates are arranged in sequence along the first direction, wherein the air outlet parts of at least two air outlet plates are connected to different air outlet air ducts. Thus, different air outlet forms are combined on the same air nozzle along the first direction, further improving the diversity of air outlet forms.

[0009] In some embodiments, the air outlet part includes multiple air outlet holes arranged at intervals along the second direction, and the multiple air outlet holes are respectively arranged one-to-one corresponding to different air outlet air ducts and are respectively located downstream of the air outlet air ducts along the air outlet direction. Thus, different air outlet forms are combined on the same air nozzle along the second direction, further improving the diversity of air outlet forms.

[0010] In some embodiments, the air outlet hole is configured as a strip-shaped hole extending along the first direction, or multiple through holes arranged in an array along the first direction and the second direction. Further improving the diversity of air outlet forms, thereby adapting to different drying scenarios.

[0011] In some embodiments, the air outlet directions of the air outlet air ducts corresponding to at least two of the multiple air outlet holes are different. Thus, the combination of different air outlet directions is realized, improving the diversity of air outlet forms.

[0012] In some embodiments, the air outlet plate further includes a plugging part located on the side of the air outlet plate facing the body, and the plugging part is used to plug the air outlet air ducts not connected to the air outlet part. Thus, the wind can only be output through the air outlet part, reducing the phenomenon of wind leakage.

[0013] In some embodiments, the flow guide assembly includes at least one flow splitting unit arranged at intervals along the second direction, and the at least one flow splitting unit divides the air duct into multiple air outlet air ducts at the air outlet end. Wherein, the flow splitting unit includes M-level flow splitting plates arranged in cascade along the air outlet direction of the air duct, the nth-level flow splitting plate is arranged in an (n-1)th-level sub-air duct defined by the (n-1)th-level flow splitting plate, and divides the (n-1)th-level sub-air duct into two nth-level sub-air ducts. M is a positive integer greater than or equal to 1, and n is a positive integer greater than or equal to 1 and less than or equal to M. Thus, multiple air outlet air ducts arranged in sequence along the second direction are formed, and under the cooperation of the air outlet plate, blowing is realized at different positions.

[0014] In some embodiments, the flow splitting unit further includes an air duct switch valve connected to the nth-level flow splitting plate and controlling the opening or closing of the two nth-level sub-air ducts. Thus, the wind flow into the plugged air outlet air duct is reduced, and the wind is guided into the air outlet air duct corresponding to the air outlet part as much as possible, to realize efficient air outlet.

[0015] In some embodiments, the air duct switch valve comprises a switching piece, a first end of the switching piece is movably connected with the nth stage shunt plate, and a second end of the switching piece is pivotable about the connection point of the first end and the nth stage shunt plate to open one of the two nth stage sub-air ducts and close the other one of the two nth stage sub-air ducts. Thus, the air is guided into the air outlet air duct corresponding to the air outlet part, thereby achieving efficient air outlet.

[0016] In some embodiments, the number of shunt units is two, and the two shunt units are respectively located on two sides of the central axis of the body along the second direction. Thus, the plurality of air outlet air ducts divided by the shunt units are arranged approximately symmetrically with respect to the central axis, and thus the air outlet air ducts located on two sides of the central axis can achieve symmetric air outlet, so that the drying of the electrode tab is more uniform.

[0017] Embodiments of the second aspect of the present application provide a drying device, which comprises a fan and the air nozzle in the above embodiments.

[0018] Embodiments of the third aspect of the present application provide a battery production system, which comprises the drying device in the above embodiments.

[0019] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0020] In the drawings, like reference numerals refer to same or similar components throughout the several views, unless otherwise indicated. These drawings are not necessarily to scale, and the emphasis has usually been placed upon illustrating the principles of the application. It should be understood that these drawings only depict some embodiments of the application in accordance with the disclosure and should not be considered limiting of the scope of the application.

[0021] Figure 1 Structure diagram of the air nozzle of some embodiments of the present application;

[0022] Figure 2 Structure diagram of the air outlet plate of some embodiments of the present application;

[0023] Figure 3 Structure diagram of the air nozzle of some embodiments of the present application;

[0024] Figure 4 Structure diagram of the air outlet plate of some embodiments of the present application;

[0025] Figure 5 Structure diagram of the air nozzle of some embodiments of the present application;

[0026] Figure 6Structure diagram of the air outlet plate of some embodiments of the present application;

[0027] Figure 7 Structure diagram of the air outlet plate of some embodiments of the present application;

[0028] Figure 8 Structure diagram of the air outlet plate of some embodiments of the present application;

[0029] Figure 9 Structure diagram of the air outlet plate of some embodiments of the present application;

[0030] Figure 10 Structure diagram of the air outlet plate of some embodiments of the present application;

[0031] Figure 11 Structure diagram of the air outlet plate of some embodiments of the present application;

[0032] Figure 12 Structure diagram of the air outlet plate of some embodiments of the present application; Figure 9 Enlarged structure diagram at A;

[0033] Figure 13 Structure diagram of the air outlet plate of some embodiments of the present application; Figure 10 Enlarged structure diagram at B.

[0034] Explanation of reference signs:

[0035] 100, air nozzle;

[0036] 10, body; D, air duct; D1, air inlet end; D2, air outlet end; d, air outlet duct; 11, first groove; 12, support structure; 13, second groove;

[0037] 20, flow guide assembly; 21, flow distribution plate; 22, switching piece;

[0038] 30, air outlet plate; 31, air outlet part; 311, strip-shaped hole; 312, through hole; 32, plugging part;

[0039] 40, fixing piece;

[0040] F1, first direction; F2, second direction; L, central axis. DETAILED DESCRIPTION

[0041] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise required by context, singular terms shall include pluralities and vice versa. Unless otherwise required by context, the use herein of the singular is also to be construed as a use of the plural and vice versa.

[0043] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0044] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments, and is not necessarily mutually exclusive of other embodiments. It is 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 of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

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

[0047] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as limiting the embodiments of the present application, which do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix", and other terms should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0049] The battery pole piece is one of the components of the battery. In the production process of the battery pole piece, the slurry containing active material is coated on the current collector to obtain the battery pole piece. The slurry contains a certain amount of water, which will affect the performance and life of the battery. Therefore, the drying process of the battery pole piece is an important process in the production process of the battery pole piece.

[0050] In some cases, the drying method of the battery pole piece is to blow hot air to the battery pole piece by the air nozzle. The heat of the hot air evaporates the water in the slurry, and then the evaporated water is carried away by the hot air to achieve the purpose of drying the battery pole piece. For different battery pole pieces, the overall size is different, and the position and size of the part to be dried are also different. Different air nozzles need to be replaced, so that the hot air can be more accurately applied to the part to be dried of the battery pole piece to meet the drying needs of different battery pole pieces. The versatility of the air nozzle is poor, and replacing the air nozzle will also affect the overall production efficiency.

[0051] Based on the above considerations, the present application provides an air nozzle, a drying equipment and a battery production system. The air nozzle comprises a body, a flow guide assembly and an air outlet plate. The body defines an air duct inside, and the air duct comprises an air inlet end and an air outlet end which are in fluid communication with each other. The flow guide assembly is arranged in the body, and the flow guide assembly is used to define a plurality of air outlet air ducts at the air outlet end of the air duct. The air outlet plate is detachably connected with the air outlet end, and the air outlet plate is provided with an air outlet part for communicating with at least one of the plurality of air outlet air ducts to realize air blowing.

[0052] By replacing different air outlet plates to communicate different air outlet air ducts, switching between multiple air outlet forms can be realized. Different air outlet forms correspond to different air outlet positions. Therefore, for different battery pole pieces, only the corresponding air outlet plate needs to be replaced, and the overall air nozzle does not need to be replaced, which can meet the drying needs of different battery pole pieces, improve the adaptability and switching efficiency of the air nozzle, and further improve the overall production efficiency.

[0053] The air nozzle disclosed in the embodiments of the present application can be used for drying the battery pole piece, but is not limited to this. The battery production system can be composed of the air nozzle, the drying equipment and the like disclosed in the present application. In this way, it is beneficial to meet the drying needs of different battery pole pieces.

[0054] Combining Figures 1 to 6 As shown in the drawings, Figure 1 is one of the structural schematic diagrams of the air nozzle of some embodiments of the present application; Figure 2 is one of the structural schematic diagrams of the air outlet plate of some embodiments of the present application; Figure 3 is one of the structural schematic diagrams of the air nozzle of some embodiments of the present application; Figure 4 is one of the structural schematic diagrams of the air outlet plate of some embodiments of the present application; Figure 5 is one of the structural schematic diagrams of the air nozzle of some embodiments of the present application; Figure 6 is one of the structural schematic diagrams of the air outlet plate of some embodiments of the present application.

[0055] The embodiments of the present application provide an air nozzle 100, which comprises a body 10, a flow guide assembly 20 and an air outlet plate 30. The body 10 defines an air duct D inside, and the air duct D comprises an air inlet end D1 and an air outlet end D2 which are in fluid communication with each other. The flow guide assembly 20 is arranged in the body 10, and the flow guide assembly 20 is used to define a plurality of air outlet ducts d at the air outlet end D2 of the air duct D. The air outlet plate 30 is detachably connected with the air outlet end D2, and the air outlet plate 30 is provided with an air outlet part 31 which is used to communicate with at least one of the plurality of air outlet ducts d to realize air blowing.

[0056] The air nozzle 100 is a component for outputting air in a certain direction and at a certain flow rate, and the flowing air forms wind. In some examples, the air nozzle 100 is used for drying the battery pole piece, and the dry hot air is outputted by the air nozzle 100 towards the battery pole piece, the heat of the hot air is transferred to the battery pole piece, the moisture of the battery pole piece is evaporated by the heat, and the battery pole piece is separated from the battery pole piece under the carrying action of the flowing hot air.

[0057] The air duct D is a channel for air to flow in the air nozzle, and the flowing air is inputted into the air duct D from the air inlet end D1 and is outputted from the air outlet end D2. The body 10 is a component for defining the air duct D, and in some examples, the body 10 can be a shell.

[0058] The flow guide assembly 20 is a component for separating the air outlet end D2 into a plurality of air outlet ducts d, and the air flowing in the air duct D enters the plurality of air outlet ducts d under the action of the flow guide assembly 20, and the air flowing in any two air outlet ducts d does not interfere with each other. Since the plurality of air outlet ducts d are separated by the flow guide assembly 20, the relative positions of the plurality of air outlet ducts d are different, and the positions of the wind blown by different air outlet ducts d on the battery pole piece are also different. In some examples, the flow guide assembly 20 can be a flow guide plate, and the air flowing to the flow guide plate is guided along the surface of the flow guide plate into the corresponding air outlet duct d, and the air outlet direction of the air outlet duct d corresponds to the arrangement angle of the flow guide plate.

[0059] The air outlet plate 30 is connected with the air outlet end D2 and allows the air flowing in at least one of the air outlet air ducts d to flow out from the corresponding air outlet part 31. In some examples, the air outlet part 31 can be an opening matched with the air outlet air duct d, and the opening is arranged at a position corresponding to the position of the corresponding air outlet air duct d, so that the opening is in communication with the corresponding air outlet air duct d, and the flowing air is sequentially output through the air inlet end D1, the air outlet air duct d and the opening.

[0060] The air outlet plate 30 is detachably connected with the air outlet end D2, and the air outlet part 31 is used to communicate with at least one of the plurality of air outlet air ducts d to realize blowing. It can be understood that not all air outlet air ducts d are in a conductive state, and as described above, the positions of the wind blown by different air outlet air ducts d acting on the battery pole piece are also different. For different battery pole pieces, a plurality of air outlet plates 30 can be set as needed, the arrangement positions of the air outlet parts 31 of any two of the plurality of air outlet plates 30 are different, then the air outlet air ducts d corresponding to the two air outlet plates 30 are different, and the positions of the air outlet are also different. For different battery pole pieces, only the corresponding air outlet plate 30 needs to be replaced to communicate with the corresponding air outlet air duct d, and the wind output by the corresponding air outlet air duct d can act on the drying part on the battery pole piece more accurately, thereby meeting the drying needs of different battery pole pieces.

[0061] In some embodiments, as shown in Figure 1 and Figure 2 , the air outlet air duct d includes an inclined inward air outlet air duct, an inclined outward air outlet air duct and a vertical downward air outlet air duct with different relative positions. The air outlet part 31 of the air outlet plate 30 communicates with the inclined inward air outlet air duct, and at this time the air outlet nozzle 100 outputs the wind with an inclined inward flowing direction.

[0062] In some other embodiments, as shown in Figure 3 and Figure 4 , the air outlet air duct d includes an inclined inward air outlet air duct, an inclined outward air outlet air duct and a vertical downward air outlet air duct with different relative positions. The air outlet part 31 of the air outlet plate 30 communicates with the inclined outward air outlet air duct, and at this time the air outlet nozzle 100 outputs the wind with an inclined outward flowing direction.

[0063] In some other embodiments, as shown in Figure 5 and Figure 6 , the air outlet air duct d includes an inclined inward air outlet air duct, an inclined outward air outlet air duct and a vertical downward air outlet air duct with different relative positions. The air outlet part 31 of the air outlet plate 30 communicates with the vertical downward air outlet air duct, and at this time the air outlet nozzle 100 outputs the wind with a vertical downward flowing direction.

[0064] By replacing different air outlet plates 30 to communicate different air outlet air ducts d, switching between multiple air outlet forms can be realized. Different air outlet forms correspond to different air outlet positions. For different battery pole pieces, only the corresponding air outlet plate 30 needs to be replaced, and the overall air nozzle 100 does not need to be replaced to meet the drying needs of different battery pole pieces, improving the adaptability and switching efficiency of the air nozzle 100, and further improving the overall production efficiency.

[0065] In combination Figures 1 to 6 As shown, according to some embodiments of the present application, the air outlet end D2 extends along the first direction F1, and the plurality of air outlet air ducts d are arranged in sequence along the second direction F2 perpendicular to the first direction F1, and the air outlet directions of at least two air outlet air ducts d are different.

[0066] The air outlet end D2 extends along the first direction F1, so that the size of the air outlet end D2 along the first direction F1 can be adapted to the width of the battery pole piece, and the air outlet end D2 can cover the battery pole piece as much as possible, improving the uniformity of the drying of the battery pole piece.

[0067] The plurality of air outlet air ducts d separated by the flow guide assembly 20 are arranged in sequence along the second direction F2, so that the air outlet positions of the plurality of air outlet air ducts d are arranged in sequence along the second direction F2, and the air outlet directions of at least two air outlet air ducts d are different, that is, the air outlet positions and air outlet directions of different air outlet air ducts d are different, thereby further improving the diversity of air outlet forms.

[0068] By extending the air outlet end D2 along the first direction F1, the uniformity of the drying of the battery pole piece is improved, and the corresponding air outlet positions and air outlet directions of different air outlet air ducts are different, further improving the diversity of air outlet forms to meet the drying needs of different battery pole pieces.

[0069] As Figure 7 shown, Figure 7 is a combined structure schematic view of the air outlet plate according to some embodiments of the present application. According to some embodiments of the present application, the number of air outlet plates 30 connected with the air outlet end D2 is multiple, and the plurality of air outlet plates 30 are arranged in sequence along the first direction F1, wherein the air outlet air ducts d communicated by the air outlet parts 31 of at least two air outlet plates 30 are different.

[0070] The plurality of air outlet plates 30 are arranged in sequence along the first direction F1, so that different air outlet plates 30 in the plurality of air outlet plates 30 correspond to different parts of the battery pole piece along the first direction F1, and the air outlet air ducts d communicated by the air outlet parts 31 of at least two air outlet plates 30 are different, thereby realizing the combination of different air outlet forms on the same air nozzle 100 along the first direction F1,

[0071] In some embodiments, as Figure 7As shown, the air outlet end D2 is connected to two air outlet plates 30, wherein the air outlet portion 31 of one air outlet plate 30 is connected to the air outlet duct inclined inward, and the air outlet portion 31 of the other air outlet plate 30 is connected to the air outlet duct inclined outward, thereby realizing a combination of outputting wind inclined inward and wind inclined outward.

[0072] By combining a plurality of air outlet plates 30 , different air outlet forms can be combined on the same air nozzle 100 along the first direction F1 , thereby further improving the diversity of the air outlet forms.

[0073] like Figure 2 、 Figure 4 and Figure 6 As shown, according to some embodiments of the present application, the air outlet portion 31 includes a plurality of air outlet holes arranged at intervals along the second direction F2, and the plurality of air outlet holes are respectively arranged in one-to-one correspondence with different air outlet ducts d, and are respectively located downstream of the air outlet duct d along the air outlet direction.

[0074] The air outlet portion 31 includes a plurality of air outlet holes spaced apart along the second direction F2. Each of the air outlet holes corresponds to a different air outlet duct d, thereby achieving a combination of different air outlet modes along the second direction F2 from the same air nozzle 100. If an air outlet hole is located downstream of the air outlet duct d, the air outlet duct d blows air through the corresponding air outlet hole.

[0075] In some embodiments, as Figure 2 As shown, two air outlets are provided, and the two air outlets are respectively located on both sides of the central axis L. The air outlet directions of the air outlet ducts d corresponding to the two air outlets are both inclined inward. At this time, the corresponding air outlet form is inward outlet from both sides.

[0076] In other embodiments, Figure 4 As shown, two air outlets are provided, and the two air outlets are respectively located on both sides of the central axis L. The air outlet directions of the air outlet ducts d corresponding to the two air outlets are both inclined outward. At this time, the corresponding air outlet form is outward from both sides.

[0077] By configuring the air outlet portion 31 as a plurality of air outlet holes, which are connected to the corresponding air outlet ducts d, a combination of different air outlet forms is achieved on the same air nozzle 100 along the second direction F2, further improving the diversity of air outlet forms.

[0078] like Figure 2 、 Figure 4 and Figure 6 As shown, according to some embodiments of the present application, the air outlet is constructed as a strip-shaped hole 311 extending along the first direction F1, or a plurality of through holes 312 arranged in an array along the first direction F1 and the second direction F2.

[0079] The air blown out of the strip-shaped hole 311 is relatively concentrated. The multiple through holes 312 of the array can play a role of uniform dispersion, and the air blown out of the multiple through holes 312 of the array is relatively dispersed and relatively soft. The strip-shaped hole 311 and the multiple through holes 312 of the array are suitable for different drying scenes.

[0080] By configuring the air outlet hole as the strip-shaped hole 311 or the multiple through holes 312 of the array, the diversity of the air outlet form is further improved, so as to adapt to different drying scenes.

[0081] In combination Figures 1 to 6 As shown in the figure, according to some embodiments of the present application, the air outlet directions of the air outlet air ducts d corresponding to at least two of the multiple air outlet holes are different.

[0082] The air outlet directions of the air outlet air ducts corresponding to at least two of the air outlet holes are different. It can be understood that in the case where the number of air outlet holes is two, the air outlet directions of the air outlet air ducts d corresponding to the two air outlet holes are different. In the case where the number of air outlet holes is three or more, the air outlet directions of the air outlet air ducts d corresponding to each air outlet hole can be different from each other.

[0083] In some embodiments, as Figure 2 shown, two air outlet holes are provided, the two air outlet holes are located on both sides of the central axis L, the air outlet directions of the air outlet air ducts d corresponding to the two air outlet holes are different and are arranged at an angle, and at this time, the corresponding air outlet form is air outlet from both sides to the inside.

[0084] In other embodiments, as Figure 4 shown, two air outlet holes are provided, the two air outlet holes are located on both sides of the central axis, the air outlet directions of the air outlet air ducts d corresponding to the two air outlet holes are different and are arranged at an angle, and at this time, the corresponding air outlet form is air outlet from both sides to the outside.

[0085] By setting the air outlet directions of the air outlet air ducts d corresponding to the multiple air outlet holes to be different, the combination of different air outlet directions is realized, and the diversity of the air outlet form is improved.

[0086] As Figures 1 to 6 shown, according to some embodiments of the present application, the air outlet plate 30 further comprises a plugging part 32, the plugging part 32 is located on the side of the air outlet plate 30 facing the body 10, and the plugging part 32 is used to plug the air outlet air ducts d not communicated with the air outlet part 31.

[0087] The plugging part 32 is a solid part on the air outlet plate 30, the plugging part 32 plugs the air outlet air ducts d not communicated with the air outlet part 31, air cannot be output from the plugged air outlet air ducts d, but can only be output through the air outlet part 31, so that air can be output from the specified air outlet air ducts d, and the phenomenon of air leakage is reduced.

[0088] In some embodiments, the air outlet plate 30 is connected to the body 10 via a fixing member 40 .

[0089] The blocking portion 32 blocks the air outlet duct d that is not connected to the air outlet portion 31 , so that the wind can only be output through the air outlet portion 31 , thereby reducing the phenomenon of cross-wind.

[0090] like Figure 8 As shown, Figure 8 This is the fourth structural diagram of the air nozzle of some embodiments of the present application. According to some embodiments of the present application, the air guide assembly 20 includes at least one diverter unit spaced apart along the second direction, and at least one diverter unit divides the air duct D into a plurality of air outlet ducts d at the air outlet end D2. The diverter unit includes M-level diverter plates cascaded along the air outlet direction of the air duct, and the n-th level diverter plate is arranged in an n-1-th level sub-air duct defined by the n-1-th level diverter plate, and divides the n-1-th level sub-air duct into two n-th level sub-air ducts. M is a positive integer greater than or equal to 1, and n is a positive integer greater than or equal to 1 and less than or equal to M.

[0091] The cascade setting is a method in which multiple components interact with each other in a step-by-step manner or in a hierarchical arrangement to achieve a specific function or effect. In this embodiment, the diverter plate can be divided into multiple levels, and each diverter plate can further divide the sub-air duct defined by the upper-level diverter plate into two sub-air ducts. In some examples, M and n are both 3, and the first-level diverter plate 21a located in the air duct D divides the air duct D into two first-level sub-air ducts Da, and the two first-level sub-air ducts Da are connected in parallel. The second-level diverter plate 21b located in the first-level sub-air duct Da divides the first-level sub-air duct Da into two second-level sub-air ducts Db, and the two second-level sub-air ducts Db are connected in parallel. The third-level diverter plate 21c located in the second-level sub-air duct Db divides the second-level sub-air duct Db into two third-level sub-air ducts Dc, and the two third-level sub-air ducts Dc are connected in parallel, and so on. Along the outlet direction, duct D connects to two first-level sub-ducts Da, each first-level sub-duct Da connects to two second-level sub-ducts Db, and each second-level sub-duct Db connects to two third-level sub-ducts Dc. This creates a hierarchical relationship between the sub-ducts. Each sub-duct has two branches, forming multiple outlet ducts d arranged sequentially along the second direction F2. Accordingly, air from duct D enters the two first-level sub-ducts Da, then the two second-level sub-ducts Db, and finally the two third-level sub-ducts Dc.

[0092] The air duct D is divided into multiple branches by the diverter plate 21, each branch corresponds to an air outlet duct d, thereby forming multiple air outlet ducts d arranged in sequence along the second direction F2, and with the cooperation of the air outlet plate 30, blowing is achieved at different positions.

[0093] Combine Figures 9 to 11As shown, Figure 9 This is the fifth structural diagram of the air nozzle of some embodiments of the present application; Figure 10 This is the sixth structural diagram of the air nozzle of some embodiments of the present application; Figure 11 This is the seventh structural diagram of the air nozzle of some embodiments of the present application. According to some embodiments of the present application, the diversion unit further includes an air duct switch valve, which is connected to the n-th stage diversion plate 21 and controls the opening or closing of the two n-th stage sub-air ducts.

[0094] The air input from the air inlet D1 enters each outlet duct d upstream of the outlet duct d. In other words, a portion of the air enters the outlet duct d blocked by the blocking portion 32. The air entering the blocked outlet duct d cannot be output and utilized, and will affect the air output of the outlet portion 31. The outlet duct d corresponding to the blocking portion 32 is closed upstream of the outlet duct d by the air duct switching valve to reduce the flow of air into the blocked outlet duct d. This allows the air to be directed to the outlet duct d corresponding to the outlet portion 31 as much as possible, achieving efficient air output.

[0095] In some embodiments, the air duct switching valve can be configured as a butterfly valve or a rotatable baffle.

[0096] The air outlet duct d corresponding to the blocking portion 32 is closed upstream of the air outlet duct d through the air duct switching valve to reduce the flow of wind into the blocked air outlet duct d, thereby guiding the wind to the air outlet duct d corresponding to the air outlet portion 31 as much as possible to achieve efficient air outlet.

[0097] Combine Figures 9 to 13 As shown, Figure 12 for Figure 9 Schematic diagram of the enlarged structure at A; Figure 13 for Figure 10 The enlarged structural schematic diagram at point B shows that according to some embodiments of the present application, the air duct switching valve includes a switching member 22, a first end of the switching member 22 is movably connected to the n-th stage diverter plate, and a second end of the switching member 22 can pivot around the connection point between the first end and the n-th stage diverter plate to open one of the two n-th stage sub-air ducts and close the other of the two n-th stage sub-air ducts.

[0098] In some embodiments, the switching member 22 can be configured as a baffle, the first end of which is rotatably connected to the nth stage diverter plate, and the second end of which is used to be sealed with the body or the n-1th stage diverter plate, thereby introducing the wind into the corresponding nth stage sub-air duct. Figures 9 to 13 As shown, the second end of the baffle on the first-stage diverter plate is used to connect to the first groove 11 of the main body 10, or to connect to the support structure 12 on the main body 10, and the second end of the baffle on the second-stage diverter plate is used to connect to the second groove 13 of the main body 10, or to connect to the first-stage diverter plate.

[0099] By switching of the switching piece 22, the wind is guided into the air outlet air duct d corresponding to the air outlet part 31, so as to realize high-efficiency air outlet.

[0100] In combination Figures 9 to 10 As shown, according to some embodiments of the present application, the number of shunt units is two, and the two shunt units are respectively located on the two sides of the central axis L of the body 10 along the second direction F2.

[0101] The central axis L is perpendicular to the plane defined by the first direction F1 and the second direction F2, and the air inlet end D1 and the air outlet end D2 are respectively located at opposite ends of the body 10 along the direction in which the central axis L is located.

[0102] In some embodiments, the two shunt units are symmetrically arranged relative to the central axis L, and correspondingly, the plurality of air outlet air ducts d divided by the shunt units are symmetrically arranged relative to the central axis L, so that the air outlet air ducts d located on the two sides of the central axis L can realize symmetric air outlet, so that the drying of the electrode sheet is more uniform.

[0103] By respectively arranging one shunt unit on the two sides of the central axis L of the body 10, the plurality of air outlet air ducts d divided by the shunt units are arranged symmetrically relative to the central axis L, so that the air outlet air ducts d located on the two sides of the central axis L can realize symmetric air outlet, so that the drying of the electrode sheet is more uniform.

[0104] The embodiment of the present application provides a drying device, which comprises a fan and the air nozzle 100 of any one of the above-mentioned embodiments, and the fan is in communication with the air nozzle 100.

[0105] The air outlet end of the fan is in communication with the air inlet end D1 of the air duct D of the air nozzle 100, and the air output by the fan passes through the air inlet end D1, the air outlet air duct d and the air outlet part 31 in sequence to realize air blowing.

[0106] In some embodiments, the battery electrode sheet to be dried is conveyed towards the drying device until the air outlet part 31 of the air nozzle 100 is in opposite arrangement, and the air outlet form of the air outlet part 31 includes air outlet from both sides to the inside, air outlet from both sides to the outside and vertical downward air outlet. The hot air output by the fan through the air outlet part 31 acts on the surface of the battery electrode sheet, the heat of the hot air is transmitted to the battery electrode sheet, the moisture of the battery electrode sheet is evaporated by heating, and under the carrying action of the hot air, the battery electrode sheet leaves the battery electrode sheet, thereby realizing the drying of the battery electrode sheet. After drying is completed, the battery electrode sheet continues to be conveyed and leaves the drying device.

[0107] The drying device in the embodiment can have all the beneficial effects of the above-mentioned air nozzle 100, which will not be described here.

[0108] The embodiment of the present application provides a battery production system, which comprises the drying device of the above-mentioned embodiments.

[0109] The drying equipment can be used for drying treatment of the battery pole piece. The battery production system can further include, but is not limited to, equipment or devices performing processes other than drying, such as pole piece coating equipment, pole piece winding equipment, pole piece slitting equipment, etc.

[0110] The battery production system in the embodiment can have all the beneficial effects of the above drying equipment, which will not be described here.

[0111] The following will be described in detail in combination with Figures 1 to 13 The embodiments of the present application will be further described in detail.

[0112] The air nozzle comprises a body 10, a flow guide assembly 20, an air outlet plate 30 and a fixing piece 40.

[0113] The body 10 defines an air duct D inside, and the air duct D comprises an air inlet end D1 and an air outlet end D2 in fluid communication with each other.

[0114] The flow guide assembly 20 is arranged in the body 10, and the flow guide assembly 20 is used to define a plurality of air outlet air ducts d at the air outlet end D2 of the air duct D. The flow guide assembly comprises two-stage flow dividing plates arranged in cascade, the first-stage flow dividing plate 21a located in the air duct D divides the air duct D into two first-stage sub-air ducts Da, the two first-stage sub-air ducts Da are in parallel, the second-stage flow dividing plate 21b located in the first-stage sub-air duct Da divides the first-stage sub-air duct Da into two second-stage sub-air ducts Db, the two second-stage sub-air ducts Db are in parallel, and a total of five air outlet air ducts d are arranged in the second direction in sequence.

[0115] The flow guide assembly 20 further comprises a switching piece 22, one end of the switching piece 22 is rotatably connected with the flow dividing plate 21. The second end of the switching piece 22 on the first-stage flow dividing plate is used to be connected with the first groove 11 of the body 10, or is used to be connected with the support structure 12 on the body 10, and the second end of the switching piece on the second-stage flow dividing plate is used to be connected with the second groove 13 of the body 10, or is used to be connected with the first-stage flow dividing plate.

[0116] The air outlet plate 30 is detachably connected with the air outlet end D2, and the air outlet plate 30 is provided with an air outlet part 31 and a plugging part 32. The air outlet part 31 is used to communicate with at least one of the plurality of air outlet air ducts d to realize air blowing. The plugging part 32 is used to plug the air outlet air duct d which is not communicated with the air outlet part 31. The air outlet plate 30 has three structures. The air outlet part 31 on the first air outlet plate 30 is a strip-shaped hole 311, which is used to realize air blowing from both sides to the inside. The air outlet part 31 on the second air outlet plate 30 is a strip-shaped hole 311, which is used to realize air blowing from both sides to the outside. The air outlet part 31 on the third air outlet plate 30 is an array of a plurality of through holes 312, which is used to realize vertical downward air blowing.

[0117] The air outlet plate 30 is connected with the body 10 through the fixing piece 40.

[0118] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tuyere, characterized in that: include: a main body, defining an air duct therein, the air duct including an air inlet end and an air outlet end in fluid communication with each other; A flow guide assembly is disposed in the body, and is used to define a plurality of air outlet ducts at the air outlet end of the air duct; An air outlet plate is detachably connected to the air outlet end, and the air outlet plate is provided with an air outlet portion, and the air outlet portion is used to communicate with at least one of the multiple air outlet ducts to achieve blowing.

2. The air nozzle according to claim 1, characterized in that: The air outlet end extends along a first direction, and the plurality of air outlet ducts are arranged in sequence along a second direction perpendicular to the first direction, and at least two of the air outlet ducts have different air outlet directions.

3. The air nozzle according to claim 2, characterized in that: There are multiple air outlet plates connected to the air outlet end, and the multiple air outlet plates are arranged in sequence along the first direction; Wherein, the air outlet portions of at least two of the air outlet plates are connected to different air outlet ducts.

4. The air nozzle according to claim 2, characterized in that: The air outlet portion includes a plurality of air outlet holes spaced apart along the second direction. The plurality of air outlet holes are respectively arranged in one-to-one correspondence with different air outlet ducts and are respectively located downstream of the air outlet ducts along the air outlet direction.

5. The air nozzle according to claim 4, characterized in that: The air outlet holes are configured as strip-shaped holes extending along the first direction, or as a plurality of through holes arranged in an array along the first direction and the second direction.

6. The air nozzle according to claim 4, characterized in that: The air outlet directions of the air outlet ducts corresponding to at least two of the plurality of air outlet holes are different.

7. The air nozzle according to any one of claims 1 to 6, characterized in that: The air outlet plate further includes a blocking portion, which is located on a side of the air outlet plate facing the main body, and is used to block an air outlet duct that is not connected to the air outlet portion.

8. The air nozzle according to claim 2, characterized in that: The flow guide assembly includes at least one diversion unit spaced apart along the second direction, and at least one diversion unit divides the air duct into a plurality of outlet air ducts at the air outlet end; The diversion unit includes M-level diversion plates arranged in cascade along the air outlet direction of the air duct. The n-th level splitter plate is disposed in an n-1-th level sub-air duct defined by the n-1-th level splitter plate, and divides the n-1-th level sub-air duct into two n-th level sub-air ducts; M is a positive integer greater than or equal to 1, and n is a positive integer greater than or equal to 1 and less than or equal to M.

9. The air nozzle according to claim 8, characterized in that: The diversion unit further includes an air duct switching valve, which is connected to the n-th stage diversion plate and controls the opening or closing of the two n-th stage sub-air ducts.

10. The air nozzle according to claim 9, characterized in that: The air duct switching valve includes a switching member, a first end of which is movably connected to the n-stage diverter plate, and a second end of the switching member can pivot around the connection point between the first end and the n-stage diverter plate to open one of the two n-stage sub-air ducts and close the other of the two n-stage sub-air ducts.

11. The air nozzle according to claim 8, characterized in that: There are two diversion units, and the two diversion units are located on both sides of the central axis of the body along the second direction.

12. A drying device, characterized in that: It comprises a fan and a tuyere according to any one of claims 1 to 11, wherein the fan is connected to the tuyere.

13. A battery production system, characterized in that: The battery production system includes the drying device according to claim 12.

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