Drying oven tuyere, drying oven and battery manufacturing equipment
By introducing an air hood and an air concentrator into the oven nozzles and adjusting the direction of hot air, the problem of loose edges during electrode drying was solved, resulting in a more uniform drying effect and improved battery manufacturing quality.
Patent Information
- Application Number
- CN202520042528.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-08
AI Technical Summary
During the battery manufacturing process, the electrode drying process can easily result in a false edge phenomenon, which affects battery performance.
Design an oven nozzle, including a nozzle body and an air guide hood. By setting an air guide hood and an air concentrator on the nozzle body, the direction of hot air is adjusted so that the hot air can effectively dry the insulation area of the electrode sheet, reduce the probability of slurry flowing to the coating area, and reduce the formation of false edges.
By optimizing the hot air distribution, the uniformity of electrode drying was improved, the risk of false edges was reduced, and the quality of battery manufacturing was improved.
Smart Images
Figure CN223869766U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and more specifically, to an oven nozzle, an oven, and battery manufacturing equipment. Background Technology
[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.
[0003] In battery manufacturing, coated electrodes need to be dried in an oven to produce electrodes of a specified thickness with uniform coating. Therefore, the drying process plays a crucial role in electrode production. However, existing drying processes are prone to producing abnormal phenomena such as false edges on the electrodes, which affects battery performance. Utility Model Content
[0004] This application provides an oven nozzle, an oven, and battery manufacturing equipment, which can reduce the risk of false edges appearing on the electrode sheets during the drying process.
[0005] This application is achieved through the following technical solution:
[0006] In a first aspect, embodiments of this application provide an oven nozzle, which includes a nozzle body and an air hood. The nozzle body has a first air outlet extending along a first direction. The air hood includes a protective cover body and an air concentrator. The protective cover body is disposed on the nozzle body and covers a portion of the first air outlet. The air concentrator is disposed within the protective cover body and has a second air inlet and a second air outlet that are relatively distributed. The second air inlet communicates with the first air outlet, and the second air outlet is used to blow air toward the electrode. From the second air inlet to the second air outlet, the extension length of the air concentrator in the first direction gradually decreases.
[0007] In the technical solution of this application embodiment, when the coated electrode sheet is dried in an oven, hot air is blown out from the first air outlet of the oven nozzle body to dry the electrode sheet. The first air outlet is a slit outlet, which will simultaneously dry the coating area, insulation area and blank area distributed along the first direction on the electrode sheet. Since the slurry in the insulation area of the electrode sheet has a lower solid content than that in the coating area, and the air volume of the first air outlet of the nozzle body is the same in the first direction, the drying rate of the slurry in the insulation area and the coating area of the electrode sheet is inconsistent. The slurry in the insulation area of the electrode sheet flows to the coating area, thereby forming a virtual edge in the coating area on the electrode sheet. By setting an air-guiding hood on the nozzle body, the air-guiding hood is positioned on the nozzle body corresponding to the insulation area and blank area of the electrode sheet. The second air inlet inside the air-guiding hood is connected to the first air outlet of the nozzle body. Since the blank area of the electrode sheet is not coated with any slurry, it does not need to be dried. The air-concentrating element extends from the second air inlet to the second air outlet in the first direction, and the length of the second air outlet corresponds to the length of the insulation area of the electrode sheet in the first direction. The second air inlet can be connected to the first air outlet corresponding to the insulation area and blank area of the electrode sheet. That is, the second air inlet can utilize the excess air volume of the first air outlet corresponding to the insulation area and blank area of the electrode sheet. By changing the direction of the hot air for drying the blank area of the electrode sheet through the air-concentrating element, the superimposed air volume is used to dry the insulation area of the electrode sheet, which accelerates the drying rate of the insulation area of the electrode sheet. This reduces the probability of the slurry in the insulation area of the electrode sheet flowing to the coating area, and reduces the risk of the electrode sheet developing a false edge during the drying process.
[0008] According to some embodiments of this application, the cross-sectional shape of the air-collecting component is a right trapezoid or an isosceles trapezoid.
[0009] In the above scheme, the length of the second air inlet at the lower end of the air collector is greater than the length of the second air outlet in the first direction. By adopting a right trapezoid or isosceles trapezoid in the cross-sectional shape of the air collector and the side of the air collector being inclined, the hot air entering the air collector can be effectively guided and then discharged from the second air outlet of the air collector, thereby reducing the generation of turbulence in the air collector.
[0010] According to some embodiments of this application, at least a portion of the air concentrator is inserted into the first air outlet; or, the second air inlet of the air concentrator is flush with the first air outlet.
[0011] In the above solution, at least a portion of the air concentrator is inserted into the first air outlet, resulting in higher installation stability of the air hood. By aligning the second air inlet of the air concentrator with the first air outlet, the air concentrator does not affect the airflow at the first air outlet of the nozzle body, thus ensuring the airflow volume at the first air outlet.
[0012] According to some embodiments of this application, the air duct is movably disposed on the air nozzle body along a first direction.
[0013] In the above solution, since the size of the coating area of the electrode varies with different models of electrode sheets, the position of the insulation area of the electrode sheet also varies. By movably setting the protective cover body on the nozzle body, the position of the air hood in the first direction of the nozzle body can be adjusted according to different models of electrode sheets, which can be used for drying different models of electrode sheets and has a wider range of applications.
[0014] According to some embodiments of this application, the nozzle body has a first side and a second side that are distributed opposite to each other along a second direction; the cover body has two abutting portions that are distributed opposite to each other along a second direction, the two abutting portions being respectively abutted on the first side and the second side of the nozzle body, and the second direction being perpendicular to the first direction.
[0015] In the above solution, the protective cover body has two abutting parts that are distributed opposite to each other along the second direction. The two abutting parts are respectively attached to the first side and the second side of the nozzle body. The air guide cover can slide on the nozzle body along the first direction. The air guide cover will not easily fall off the nozzle body. This structure is simpler and does not require structural modification of the nozzle body, thus retaining the original structure of the nozzle body.
[0016] According to some embodiments of this application, the air hood includes a fastener that is threadedly engaged with the abutment portion. One end of the fastener is configured to abut against a first side or a second side of the nozzle body to prevent the air hood from moving relative to the nozzle body in a first direction.
[0017] In the above solution, fasteners are provided on the abutment part of the air hood, and one end of the fastening bolt abuts against the first or second side of the air nozzle body. Under the clamping action of the fastening bolts on the two abutment parts, the air hood is clamped and fixed on the air nozzle body. The installation stability of the air hood is higher, and the position adjustment of the air hood is also more convenient, as it only requires loosening the fasteners.
[0018] According to some embodiments of this application, there are two first air outlets, which are distributed at intervals along a second direction on the nozzle body, and the second direction is perpendicular to the first direction.
[0019] In the above scheme, the two first air outlets work together to dry the electrode sheet with hot air, which improves the drying rate of the electrode sheet by the air nozzle body.
[0020] According to some embodiments of this application, two air-concentrating elements are provided on the protective cover body corresponding to each first air outlet, and the two air-concentrating elements are distributed at intervals along the first direction on the protective cover body.
[0021] In the above scheme, by separating the two air-concentrating components on the protective cover body along the first direction, the positions of the two air-concentrating components can correspond to the positions of the two adjacent insulating areas on both sides of the blank area on the electrode sheet. The two air-concentrating components can simultaneously dry the insulating areas on both sides of the blank area on the electrode sheet with hot air, thus meeting the drying requirements of the electrode sheet.
[0022] According to some embodiments of this application, the air hood further includes a baffle plate, which is disposed between two air concentrators at the same first air outlet, and the baffle plate is fitted to the first air outlet.
[0023] In the above scheme, there is a gap between the two air concentrators in the first direction. By setting a baffle between the two air concentrators, the baffle can block and guide the hot air in the area corresponding to the blank area of the first air outlet. Under the blocking effect of the baffle, the hot air can be directed to the air concentrators on both sides, avoiding the waste of hot air in the area between the two air concentrators at the first air outlet.
[0024] According to some embodiments of this application, along the first direction, the protective cover body includes a telescopic part and two fixed parts. The telescopic part is telescopically disposed between the two fixed parts and connected to the fixed parts along the first direction, and the wind concentrator is disposed on the fixed part; the wind baffle is telescopically disposed between the two wind concentrators along the first direction.
[0025] In the above solution, since the width of the blank area varies for different types of electrode sheets, the protective cover body includes a telescopic part and two fixed parts. The telescopic part is telescopically positioned between the two fixed parts along the first direction, allowing the length of the protective cover body in the first direction to be adjusted according to actual conditions to meet the drying requirements of different types of electrode sheets. Furthermore, the two air-concentrating components should always correspond to the areas of two adjacent insulating regions on the electrode sheet. Of course, by adopting a telescopic plate structure for the baffle plate to adapt to the deformation of the protective cover body in the first direction, the baffle plate can still meet the wind-blocking requirements for a portion of the blank area on the first air outlet.
[0026] According to some embodiments of this application, a sealing gasket is provided on the outer peripheral side of the protective cover body, and the sealing gasket is used to seal the protective cover body and the nozzle body.
[0027] In the above solution, by setting a sealing gasket on the outer periphery of the protective cover body, the sealing gasket can enhance the sealing between the protective cover body and the nozzle body, and reduce the risk of hot air from the first air outlet escaping from the gap between the protective cover body and the nozzle body.
[0028] Secondly, this application also provides an oven, which includes the oven nozzle of any of the foregoing embodiments.
[0029] Thirdly, embodiments of this application also provide a battery manufacturing apparatus, which includes the aforementioned oven nozzle or the aforementioned oven.
[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of an oven nozzle provided in some embodiments of this application;
[0033] Figure 2 for Figure 1 Enlarged diagram of A in the middle;
[0034] Figure 3 This is a structural schematic diagram of the air hood provided in some embodiments of this application from another angle;
[0035] Figure 4 A schematic diagram of a partial installation of an air duct cover on a nozzle body, provided for some embodiments of this application;
[0036] Figure 5 Side view of an oven nozzle provided in some embodiments of this application;
[0037] Figure 6 This is a schematic diagram of the structure of the oven nozzle and electrode plate in some embodiments of this application;
[0038] Figure 7 This is a schematic diagram of the partitioning of the electrode sheet provided in some embodiments of this application;
[0039] Figure 8 This is a schematic diagram of the structure formed by the virtual edge of the electrode sheet provided in some embodiments of this application.
[0040] Icons: 100-Oven nozzle; 10-Nozzle body; 11-First air outlet; 12-First side; 13-Second side; 20-Air duct; 21-Cover body; 211-Attaching part; 212-Telescopic part; 213-Fixing part; 22-Air concentrator; 221-Second air inlet; 222-Second air outlet; 23-Fastener; 24-Wind baffle; 241-Second mounting part; 242-Second sliding part; 200-Electrode; 201-Covering area; 202-Insulation area; 203-Blank area; 204-Dummy edge; X-First direction; Y-Second direction. Detailed Implementation
[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0042] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.
[0043] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.
[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0045] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0046] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).
[0047] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.
[0048] In some embodiments, the positive electrode can be a positive electrode sheet, which may include a positive current collector and a positive active material disposed on at least one surface of the positive current collector.
[0049] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.
[0050] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, as a metal foil, it can be aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium, etc. Composite current collectors can include a polymer material substrate and a metal layer. Composite current collectors can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).
[0051] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used.
[0052] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative current collector.
[0053] As an example, the negative electrode current collector can be a metal foil or a composite current collector. For example, as a metal foil, it can be aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, or made of carbon, nickel, or titanium, etc.
[0054] In some embodiments, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.
[0055] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in batteries. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. Silicon-based materials may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. Tin-based materials may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, this application is not limited to these materials, and other conventional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.
[0056] In some embodiments, the separator is a diaphragm. This application does not impose any particular limitation on the type of diaphragm; any known porous diaphragm with good chemical and mechanical stability can be selected.
[0057] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.
[0058] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.
[0059] In some embodiments, the electrode assembly is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.
[0060] From a market perspective, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.
[0061] The development of battery technology must take into account multiple design factors, such as performance parameters like energy density and charge / discharge rate. In addition, battery reliability also needs to be considered.
[0062] Currently, when coated electrodes undergo drying in an oven, hot air is blown out from the oven's nozzles to dry the electrodes. The nozzles are slit-type outlets, and the hot air from them simultaneously dries the coating area, insulation area, and blank area of the electrode. This often results in a false edge phenomenon after drying. The inventors further discovered that because the slurry in the insulation area of the electrode has a lower solids content than the coating area, and the airflow from the nozzles is the same in the slit direction, the drying rates of the slurry in the insulation and coating areas are inconsistent. The slurry in the insulation area flows towards the coating area, thus creating a false edge phenomenon in the coating area of the electrode.
[0063] In view of this, in order to solve the problem of false edges easily appearing on the electrode sheets during the drying process, some embodiments of this application provide an oven nozzle. The oven nozzle includes a nozzle body and an air hood. The nozzle body has a first air outlet extending along a first direction. The air hood includes a protective cover body and an air concentrator. The protective cover body is disposed on the nozzle body and covers the portion of the first air outlet. The air concentrator is disposed in the protective cover body and has a second air inlet and a second air outlet that are relatively distributed. The second air inlet communicates with the first air outlet, and the second air outlet is used to blow air toward the electrode sheets. From the second air inlet to the second air outlet, the extension length of the air concentrator in the first direction gradually decreases.
[0064] In this type of oven nozzle, an air hood is installed on the nozzle body, positioned corresponding to the insulation and blank areas of the electrode sheet. The second air inlet inside the air hood is connected to the first air outlet of the nozzle body. Since the blank areas of the electrode sheet are not coated with any slurry, this area does not need to be dried. The air flow from the second air inlet to the second air outlet gradually decreases in length in the first direction. The length of the second air outlet corresponds to the length of the insulation area of the electrode sheet in the first direction. The second air inlet can be connected to the first air outlet corresponding to the insulation and blank areas of the electrode sheet. In other words, the second air inlet can utilize the excess airflow from the first air outlet corresponding to the insulation and blank areas of the electrode sheet. By changing the direction of the hot air used to dry the blank areas of the electrode sheet through the air concentrator, the superimposed airflow is used to dry the insulation areas of the electrode sheet, accelerating the drying rate of the insulation areas of the electrode sheet. This reduces the probability of slurry flowing from the insulation areas of the electrode sheet to the coating area, thus reducing the risk of the electrode sheet developing false edges during the drying process.
[0065] This application provides an oven air nozzle; please refer to... Figures 1 to 8The oven nozzle 100 includes a nozzle body 10 and an air duct 20. The nozzle body 10 has a first air outlet 11 extending along a first direction X. The air duct 20 includes a protective cover body 21 and an air concentrator 22. The protective cover body 21 is disposed on the nozzle body 10 and covers a portion of the first air outlet 11. The air concentrator 22 is disposed inside the protective cover body 21. The air concentrator 22 has a second air inlet 221 and a second air outlet 222 that are relatively distributed. The second air inlet 221 communicates with the first air outlet 11, and the second air outlet 222 is used to blow air toward the electrode 200. From the second air inlet 221 to the second air outlet 222, the extension length of the air concentrator 22 in the first direction X gradually decreases.
[0066] The nozzle body 10 is the air outlet component inside the oven that blows hot air out onto the electrode 200. Please refer to... Figure 7 The electrode 200 is divided into three areas: a coating area 201, an insulation area 202, and a blank area 203. The coating area 201 is where the positive or negative active material is coated onto the electrode 200. The insulation area 202 is where a layer of white paste is coated onto the electrode 200, providing insulation. The blank area 203 of the electrode 200 is not coated with paste. Please refer to [reference needed]. Figure 8 As shown, due to the different drying rates of the insulation region 202 and the coating region 201 of the electrode 200, the slurry in the insulation region 202 of the electrode 200 flows to the coating region 201, thereby forming a virtual edge 204 in the coating region 201 on the electrode 200.
[0067] Since the width of the insulating area 202 on the electrode 200 in the first direction X is generally a fixed value, the length of the second air outlet 222 of the air concentrator 22 in the first direction X is equal to the width of the insulating area 202 of the electrode 200. In this way, the second air outlet 222 of the air concentrator 22 can dry the slurry on the insulating area 202 of the electrode 200 with hot air. The length of the second air inlet 221 of the air concentrator 22 is greater than the length of the second air outlet 222. In this way, the second air inlet 221 can utilize the hot air from the first air outlet 11 of the nozzle body 10 corresponding to the blank area 203 of the electrode 200. The hot air from the area of the first air outlet 11 corresponding to the blank area 203 of the electrode 200 is guided into the air concentrator 22 and blown towards the insulation area 202 of the electrode 200. This increases the drying efficiency of the slurry in the insulation area 202 of the electrode 200, making the drying rate of the slurry in the insulation area 202 of the electrode 200 match that of the coating area 201, and reducing the risk of the formation of the false edge 204.
[0068] In the technical solution of this application embodiment, when the coated electrode 200 is dried in an oven, hot air is blown out from the first air outlet 11 of the air nozzle body 10 of the oven to dry the electrode 200. The first air outlet 11 is a slit air outlet, which will simultaneously dry the coating area 201, insulation area 202 and blank area 203 distributed along the first direction X on the electrode 200. Since the slurry in the insulation area 202 of the electrode 200 has a lower solid content than that in the coating area 201, and the air volume of the first air outlet 11 of the air nozzle body 10 is the same in the first direction X, the drying rate of the slurry in the insulation area 202 and the coating area 201 of the electrode 200 is inconsistent. The slurry in the insulation area 202 of the electrode 200 flows to the coating area 201, thereby forming a virtual edge 204 in the coating area 201 on the electrode 200. By setting the air guide shroud 20 on the nozzle body 10, the air guide shroud 20 is positioned on the nozzle body 10 corresponding to the insulation area 202 and the blank area 203 of the electrode 200. The second air inlet 221 inside the air guide shroud 20 communicates with the first air outlet 11 of the nozzle body 10. Since the blank area 203 of the electrode 200 is not coated with any slurry, it does not need to be dried. The direction from the second air inlet 221 to the second air outlet 222 is such that the extension length of the air concentrator 22 in the first direction X gradually decreases. The length of the second air outlet 222 corresponds to the length of the insulation area 202 of the electrode 200 in the first direction X. The second air inlet 221... The second air inlet 221 can be connected to the first air outlet 11 corresponding to the insulation area 202 and the blank area 203 of the electrode 200. That is, the second air inlet 221 can utilize the excess air volume of the first air outlet 11 corresponding to the insulation area 202 and the blank area 203 of the electrode 200. By changing the direction of the hot air that was originally drying the blank area 203 of the electrode 200 through the air concentrator 22, the superimposed air volume is used to dry the insulation area 202 of the electrode 200, which accelerates the drying rate of the insulation area 202 of the electrode 200. This reduces the probability that the slurry in the insulation area 202 of the electrode 200 flows to the coating area 201, and reduces the risk of the electrode 200 developing a false edge 204 during the drying process.
[0069] According to some embodiments of this application, please refer to Figure 3 and Figure 4 The cross-sectional shape of the air-collecting component 22 is a right trapezoid or an isosceles trapezoid.
[0070] In this embodiment, the cross-sectional shape of the air-collecting component 22 is a right trapezoid.
[0071] The length of the second air inlet 221 at the lower end of the air concentrator 22 in the first direction X is greater than the length of the second air outlet 222. By adopting a right trapezoid or isosceles trapezoidal cross-sectional shape for the air concentrator 22 and having inclined sides for the air concentrator 22, the hot air entering the air concentrator 22 can be effectively guided and then discharged from the second air outlet 222 of the air concentrator 22, thereby reducing the generation of turbulence in the air concentrator 22.
[0072] According to some embodiments of this application, at least a portion of the air concentrator 22 is inserted into the first air outlet 11; or, the second air inlet 221 of the air concentrator 22 is flush with the first air outlet 11.
[0073] Inserting at least a portion of the air-concentrating component 22 into the first air outlet 11 means that at least a portion of the air-concentrating component 22 is located inside the first air outlet 11, and the insertion of the air-concentrating component 22 will affect the air volume of the first air outlet 11.
[0074] The second air inlet 221 of the air concentrator 22 is flush with the first air outlet 11, which means that the lower end surface of the air concentrator 22 is flush with the top surface of the nozzle body 10.
[0075] With at least a portion of the air concentrator 22 inserted into the first air outlet 11, the installation stability of the air hood 20 is improved. By aligning the second air inlet 221 of the air concentrator 22 with the first air outlet 11, the air concentrator 22 will not affect the airflow of the first air outlet 11 of the nozzle body 10, thus ensuring the airflow of the first air outlet 11.
[0076] According to some embodiments of this application, the air duct 20 is movably disposed on the air nozzle body 10 along the first direction X.
[0077] The protective cover body 21 can be movably mounted on the nozzle body 10 along the first direction X in various ways. The protective cover body 21 may be equipped with a slider, and the nozzle body 10 may be equipped with a corresponding slide rail. The protective cover body 21 slides in conjunction with the slide rail of the nozzle body 10 via the slider. Alternatively, the cross-sectional shape of the air intake shroud 20 can be U-shaped. The air intake shroud 20 has abutment portions 211 on both sides, which are attached to the sides of the nozzle body 10 in the width direction. This allows the air intake shroud 20 to slide along the first direction X on the nozzle body 10, preventing it from easily detaching from the nozzle body 10.
[0078] Since the dimensions of the coating area 201 of the electrode 200 vary depending on the model of the electrode 200, the position of the insulation area 202 of the electrode 200 also varies. By movably setting the protective cover body 21 on the nozzle body 10, the position of the air duct 20 in the first direction X of the nozzle body 10 can be adjusted according to the different models of the electrode 200, which can be used to dry different models of the electrode 200 and has a wider range of applications.
[0079] According to some embodiments of this application, please refer to Figure 1 The nozzle body 10 has a first side 12 and a second side 13 that are relatively distributed along the second direction Y; the cover body 21 has two abutting parts 211 that are relatively distributed along the second direction Y, and the two abutting parts 211 are respectively attached to the first side 12 and the second side 13 of the nozzle body 10, and the second direction Y is perpendicular to the first direction X.
[0080] The abutment portion 211 refers to the abutment portions 211 on both sides of the nozzle body 10 in the second direction Y, making the cross-sectional shape of the air guide shroud 20 approximately U-shaped, allowing the air guide shroud 20 to straddle the nozzle body 10. Of course, to improve the installation stability of the air guide shroud 20 on the nozzle body 10, reinforcing components can be provided on the air guide shroud 20 to strengthen the stability between the air guide shroud 20 and the nozzle body 10. Under the impact of the hot air from the nozzle body 10, the air guide shroud 20 is less likely to move relative to the nozzle body 10. The reinforcing components can be of various types, including magnetic components, which are magnets. Since the nozzle body 10 is made of metal, the air guide shroud 20 is magnetically attached to the nozzle body 10 by the reinforcing components. When it is necessary to move the air guide shroud 20, it is only necessary to overcome the magnetic attraction between the reinforcing components and the nozzle body 10.
[0081] Of course, the reinforcing component can also be a fastening bolt. The fastening bolt is threaded into the abutment part 211. One end of the fastening bolt abuts against the first side 12 or the second side 13 of the nozzle body 10. Under the clamping action of the fastening bolts on the two abutment parts 211, the air duct 20 is clamped and fixed on the nozzle body 10.
[0082] The protective cover body 21 has two abutting parts 211 that are relatively distributed along the second direction Y. The two abutting parts 211 are respectively attached to the first side 12 and the second side 13 of the nozzle body 10. The air guide cover 20 can slide on the nozzle body 10 along the first direction X. The air guide cover 20 will not easily fall off the nozzle body 10. This structure is simpler and does not require structural modification of the nozzle body 10, thus retaining the original structure of the nozzle body 10.
[0083] According to some embodiments of this application, please refer to Figure 1 and Figure 3The air intake cover 20 includes a fastener 23, which is threadedly engaged with the abutment portion 211. One end of the fastener 23 is configured to abut against a first side 12 or a second side 13 of the nozzle body 10 to prevent the air intake cover 20 from moving relative to the nozzle body 10 in the first direction X.
[0084] Fastener 23 can be a fastening bolt. One end of the fastening bolt is located on the side of the air intake shroud 20 away from the nozzle body 10, and the other end of the fastening bolt can abut against the first side 12 or the second side 13 of the nozzle body 10. When it is necessary to adjust the position of the air intake shroud 20, simply loosen the fastening bolt, and the air intake shroud 20 can move relative to the nozzle body 10 in the first direction X. After the position of the air intake shroud 20 is adjusted to the correct position, simply tighten the fastening bolt; the operation is convenient and quick.
[0085] Furthermore, the number of fasteners 23 on each abutment portion 211 can be one or more. In this embodiment, the number of fasteners 23 on the abutment portion 211 is two, and the two fastening bolts are distributed at intervals along the first direction X on the abutment portion 211.
[0086] By providing fasteners 23 on the abutment portion 211 of the air duct 20, one end of the fastening bolt abuts against the first side 12 or the second side 13 of the air nozzle body 10. Under the clamping action of the fastening bolts on the two abutment portions 211, the air duct 20 is clamped and fixed on the air nozzle body 10. The installation stability of the air duct 20 is higher, and the position adjustment of the air duct 20 is also more convenient, as it only requires loosening the fasteners 23.
[0087] According to some embodiments of this application, please refer to Figure 1 There are two first air outlets 11, and the two first air outlets 11 are distributed at intervals along the second direction Y on the nozzle body 10. The second direction Y is perpendicular to the first direction X.
[0088] The first air outlet 11 on the nozzle body 10 is a slit air outlet, and the number of first air outlets 11 can be one or more. In this embodiment, the number of first air outlets 11 is two. The second direction Y is the length direction of the electrode 200, which is also the conveying direction of the electrode 200.
[0089] The two first air outlets 11 work together to dry the electrode 200 with hot air, which improves the drying rate of the electrode 200 by the nozzle body 10.
[0090] According to some embodiments of this application, please refer to Figure 1 , Figure 2 and Figure 3 Two air-concentrating elements 22 are provided on the protective cover body 21 corresponding to each first air outlet 11, and the two air-concentrating elements 22 are distributed at intervals along the first direction X on the protective cover body 21.
[0091] The electrode 200 generally has multiple sets of coating areas 201 and insulation areas 202 distributed along its width direction. The blank area 203 separates two adjacent sets of coating areas 201 and insulation areas 202 on the electrode 200. The blank area 203 on the electrode 200 is not coated with paste.
[0092] Of course, when the number of groups of coating areas 201 and insulation areas 202 on the electrode 200 is greater than two, the number of groups of coating areas 201 and insulation areas 202 on the electrode 200 is N. Then the number of air ducts 20 is also N-1, and multiple air ducts 20 are distributed at intervals along the first direction X at corresponding positions on the nozzle body 10.
[0093] By separating the two air-concentrating elements 22 on the protective cover body 21 along the first direction X, the positions of the two air-concentrating elements 22 can correspond to the positions of the two adjacent insulating areas 202 on both sides of the blank area 203 on the electrode 200. The two air-concentrating elements 22 can simultaneously dry the insulating areas 202 on both sides of the blank area 203 on the electrode 200 with hot air, thus meeting the drying requirements of the electrode 200.
[0094] According to some embodiments of this application, please refer to Figure 3 The air hood 20 also includes a baffle plate 24, which is disposed between two air concentrators 22 in the same first air outlet 11 and is fitted to the first air outlet 11.
[0095] The wind deflector 24 refers to the wind-blocking component set between the two wind-gathering elements 22 on the protective cover body 21. The wind deflector 24 is set corresponding to the first air outlet 11 of the air nozzle body 10.
[0096] There is a gap between the two air concentrators 22 in the first direction X. By setting a baffle 24 between the two air concentrators 22, the baffle 24 can block and guide the hot air in the area of the first air outlet 11 corresponding to the blank area 203. Under the blocking effect of the baffle 24, the hot air can be directed to the air concentrators 22 on both sides, avoiding the waste of hot air in the area between the two air concentrators 22 at the first air outlet 11.
[0097] According to some embodiments of this application, please refer to Figure 1 and Figure 3 Along the first direction X, the protective cover body 21 includes a telescopic part 212 and two fixed parts 213. The telescopic part 212 is telescopically disposed between the two fixed parts 213 and connected to the fixed parts 213 along the first direction X. The wind concentrator 22 is disposed on the fixed part 213. The wind baffle 24 is telescopically disposed between the two wind concentrators 22 along the first direction X.
[0098] The telescopic part 212 refers to a telescopic component disposed between two fixed parts 213. The telescopic part 212 can be a telescopic sealing gasket or a foldable sealing gasket. The material of the telescopic part 212 can be a high-temperature resistant material. In this embodiment, the telescopic part 212 includes multiple folded parts distributed sequentially along the first direction X. The multiple folded parts are sequentially sealed and connected, and adjacent folded parts can be folded or unfolded, similar to a folding screen structure. In the unfolded state, the length of the telescopic part 212 increases; in the folded state, the length of the telescopic part 212 decreases, to meet the telescopic requirements of the protective cover body 21.
[0099] Of course, the telescopic part 212 may also include a first mounting part and a first sliding part, with the opposite sides of the first mounting part and the first sliding part respectively connected to two fixed parts 213. The first mounting part has a first sliding cavity for the first sliding part to be inserted into, and the first sliding part is at least partially inserted into the first sliding cavity of the first mounting part and slides in cooperation with the first sliding cavity in the first direction X. The telescopic part 212 achieves its telescopic change in the first direction X by sliding in cooperation with the first sliding cavity of the first mounting part relative to the first sliding part.
[0100] In this embodiment, the telescopic part 212 is a telescopic sealing gasket, and the telescopic part 212 includes folded parts distributed sequentially along the first direction X.
[0101] The structure of the wind deflector 24 may be the same as or different from that of the telescopic part 212. For example, the wind deflector 24 may include a second mounting part 241 and a second sliding part 242, with opposite sides of the second mounting part 241 and the second sliding part 242 respectively connected to two air-concentrating members 22. The second mounting part 241 has a second sliding cavity into which the second sliding part 242 is inserted, and the second sliding part 242 is at least partially inserted into the second sliding cavity of the second mounting part 241 and slides in cooperation with the second sliding cavity in the first direction X.
[0102] Since the width of the blank area 203 varies among different types of electrode sheets 200, the protective cover body 21 includes a telescopic part 212 and two fixed parts 213. The telescopic part 212 is telescopically disposed between the two fixed parts 213 along the first direction X. This allows the length of the protective cover body 21 in the first direction X to be adjusted according to actual conditions, meeting the drying requirements of different types of electrode sheets 200. Furthermore, the two air-concentrating elements 22 should always correspond to the areas of two adjacent insulating areas 202 on the electrode sheet 200. Of course, by adopting a telescopic plate structure for the baffle plate 24 to adapt to the deformation of the protective cover body 21 in the first direction X, the baffle plate 24 can still meet the wind-blocking requirements for a portion of the area corresponding to the blank area 203 on the first air outlet 11.
[0103] According to some embodiments of this application, a sealing gasket is provided on the outer periphery of the protective cover body 21, and the sealing gasket is used to seal the protective cover body 21 with the nozzle body 10.
[0104] The sealing gasket can be made of rubber and is arranged around the outer periphery of the cover body 21.
[0105] By providing a sealing gasket on the outer periphery of the shield body 21, the sealing gasket can enhance the sealing between the shield body 21 and the nozzle body 10, reducing the risk of hot air from the first air outlet 11 escaping from the gap between the shield body 21 and the nozzle body 10.
[0106] This application also provides an oven, which includes the oven nozzle 100 of any of the foregoing embodiments.
[0107] The oven includes an oven body, an upper hull, and a lower hull. Multiple upper and lower hulls are alternately distributed along the second direction Y on the upper and lower sides of the oven body. Oven nozzles 100 are disposed on the upper and lower hulls. Each nozzle is divided into upper and lower nozzles, with the upper nozzle corresponding to the upper hull and the lower nozzle corresponding to the lower hull. The lower nozzle communicates with the inner cavity of the lower hull, and the upper nozzle communicates with the inner cavity of the upper hull. The inner cavities of both the upper and lower hulls are connected to hot air ducts, which supply hot air to the upper and lower hulls. The hot air from the inner cavities of the upper and lower hulls exits from the first air outlet 11 of the upper and lower nozzles, drying the upper and lower surfaces of the electrode 200. The area between the upper and lower hulls constitutes a drying zone through which the electrode 200 passes.
[0108] The drying zone inside the oven body has several rollers spaced at intervals along the second direction Y. These rollers support and transport the electrode 200, guiding it through the oven along the second direction Y. The second direction Y is the transport direction of the electrode 200 inside the oven. The first direction X is perpendicular to the second direction Y, meaning the second direction Y can be the length direction of the electrode 200, and the first direction X is the width direction of the electrode 200.
[0109] This application also provides a battery manufacturing apparatus, which includes the aforementioned oven nozzle or the aforementioned oven.
[0110] In some embodiments, the oven nozzle 100 includes a nozzle body 10 and an air hood 20. The nozzle body 10 has a first air outlet 11 extending along a first direction X. The air hood 20 includes a protective cover body 21 and an air concentrator 22. The protective cover body 21 is disposed on the nozzle body 10 and covers a portion of the first air outlet 11. The air concentrator 22 is disposed inside the protective cover body 21 and has a second air inlet 221 and a second air outlet 222 that are relatively distributed. The second air inlet 221 communicates with the first air outlet 11, and the second air outlet 222 is used to blow air toward the electrode 200. From the second air inlet 221 to the second air outlet 222, the length of the air concentrator 22 gradually decreases in the first direction X. The cross-sectional shape of the air concentrator 22 is a right-angled trapezoid, and the second air inlet 221 of the air concentrator 22 is flush with the first air outlet 11.
[0111] By setting the air guide shroud 20 on the nozzle body 10, the air guide shroud 20 is positioned on the nozzle body 10 corresponding to the insulation area 202 and the blank area 203 of the electrode 200. The second air inlet 221 inside the air guide shroud 20 communicates with the first air outlet 11 of the nozzle body 10. Since the blank area 203 of the electrode 200 is not coated with any slurry, it does not need to be dried. The direction from the second air inlet 221 to the second air outlet 222 is such that the length of the air concentrator 22 in the first direction X gradually decreases. The length of the second air outlet 222 corresponds to the length of the insulation area 202 of the electrode 200 in the first direction X. The second air inlet 221 can... The second air inlet 221 is connected to the first air outlet 11, corresponding to the insulation area 202 and the blank area 203 of the electrode 200. This means the second air inlet 221 can utilize the excess airflow from the first air outlet 11 corresponding to these areas. By changing the direction of the hot air used for drying the blank area 203 of the electrode 200 through the air-concentrating component 22, the airflow is superimposed to dry the insulation area 202 of the electrode 200, accelerating the drying rate and reducing the probability of slurry flowing from the insulation area 202 to the coating area 201. This also reduces the risk of the electrode 200 developing a false edge 204 during the drying process. By aligning the second air inlet 221 of the air-concentrating component 22 with the first air outlet 11, the air-concentrating component 22 does not affect the airflow from the first air outlet 11 of the nozzle body 10, ensuring the airflow from the first air outlet 11.
[0112] In some embodiments, the air intake shroud 20 is movably disposed on the nozzle body 10 along a first direction X. The nozzle body 10 has a first side 12 and a second side 13 distributed opposite to each other along a second direction Y; the shroud body 21 has two abutment portions 211 distributed opposite to each other along the second direction Y, the two abutment portions 211 being respectively abutted on the first side 12 and the second side 13 of the nozzle body 10, the second direction Y being perpendicular to the first direction X. The air intake shroud 20 includes a fastener 23, the fastener 23 being threadedly engaged with the abutment portion 211, one end of the fastener 23 being configured to abut against the first side 12 or the second side 13 of the nozzle body 10 to prevent the air intake shroud 20 from moving relative to the nozzle body 10 along the first direction X.
[0113] Because the dimensions of the coating area 201 of different electrode models 200 vary, the positions of the insulation area 202 of the electrode model 200 also differ. By movably mounting the protective cover body 21 onto the nozzle body 10, the position of the air guide hood 20 on the first direction X of the nozzle body 10 can be adjusted according to different electrode models 200, making it suitable for drying different electrode models and thus having a wider range of applications. The protective cover body 21 has two abutment portions 211 distributed opposite each other along the second direction Y, which are respectively attached to the first side 12 and the second side 13 of the nozzle body 10. The air guide hood 20 can slide along the first direction X on the nozzle body 10 without easily detaching from it. This structure is simpler and does not require structural modifications to the nozzle body 10, preserving its original structure. By providing fasteners 23 on the abutment portion 211 of the air duct 20, one end of the fastening bolt abuts against the first side 12 or the second side 13 of the air nozzle body 10. Under the clamping action of the fastening bolts on the two abutment portions 211, the air duct 20 is clamped and fixed on the air nozzle body 10. The installation stability of the air duct 20 is higher, and the position adjustment of the air duct 20 is also more convenient, as it only requires loosening the fasteners 23.
[0114] In some embodiments, there are two first air outlets 11, which are spaced apart along a second direction Y on the nozzle body 10, and the second direction Y is perpendicular to the first direction X. Two air-concentrating elements 22 are provided on the cover body 21 corresponding to each first air outlet 11, and the two air-concentrating elements 22 are spaced apart along the first direction X on the cover body 21. The air hood 20 also includes a baffle plate 24, which is disposed between the two air-concentrating elements 22 of the same first air outlet 11, and the baffle plate 24 is fitted to the first air outlet 11. Along the first direction X, the cover body 21 includes a telescopic part 212 and two fixed parts 213. The telescopic part 212 is telescopically disposed between and connected to the two fixed parts 213 along the first direction X, and the air-concentrating elements 22 are disposed on the fixed parts 213. The baffle plate 24 is telescopically disposed between the two air-concentrating elements 22 along the first direction X. A sealing gasket is provided on the outer periphery of the protective cover body 21. The sealing gasket is used to seal the protective cover body 21 with the nozzle body 10.
[0115] Two air-concentrating elements 22 on the protective cover body 21 are separated along the first direction X. The positions of the two air-concentrating elements 22 correspond to the positions of the two adjacent insulating areas 202 on both sides of the blank area 203 on the electrode 200. The two air-concentrating elements 22 can simultaneously dry the insulating areas 202 on both sides of the blank area 203 on the electrode 200 with hot air, thus meeting the drying requirements of the electrode 200. By setting a baffle plate 24 between the two air-concentrating elements 22, the baffle plate 24 can block and guide the hot air in the area of the first air outlet corresponding to the blank area 203. Under the blocking effect of the baffle plate 24, the hot air can be directed to the air-concentrating elements 22 on both sides, avoiding the waste of hot air in the area between the two air-concentrating elements 22 at the first air outlet 11. Since the width of the blank area 203 varies among different types of electrode sheets 200, the protective cover body 21 includes a telescopic part 212 and two fixed parts 213. The telescopic part 212 is telescopically disposed between the two fixed parts 213 along the first direction X. This allows the length of the protective cover body 21 in the first direction X to be adjusted according to actual conditions, meeting the drying requirements of different types of electrode sheets 200. Furthermore, the two air-concentrating elements 22 should always correspond to the areas of two adjacent insulating areas 202 on the electrode sheet 200. Of course, by adopting a telescopic plate structure for the baffle plate 24 to adapt to the deformation of the protective cover body 21 in the first direction X, the baffle plate 24 can still meet the wind-blocking requirements for the portion of the first air outlet 11 corresponding to the blank area 203. By providing a sealing gasket on the outer periphery of the protective cover body 21, the sealing performance between the protective cover body 21 and the nozzle body 10 is enhanced, reducing the risk of hot air from the first air outlet 11 escaping from the gap between the protective cover body 21 and the nozzle body 10.
[0116] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. An oven nozzle, characterized in that, include: The nozzle body has a first air outlet extending along a first direction; An air intake cover includes a cover body and an air concentrator. The cover body is disposed on the nozzle body and covers a portion of the first air outlet. The air concentrator is disposed within the cover body and has a second air inlet and a second air outlet that are relatively distributed. The second air inlet communicates with the first air outlet, and the second air outlet is used to blow air toward the electrode. The extension length of the air concentrator gradually decreases in the first direction from the second air inlet to the second air outlet.
2. The oven nozzle according to claim 1, characterized in that, The cross-sectional shape of the air-gathering component is a right-angled trapezoid or an isosceles trapezoid.
3. The oven nozzle according to claim 1, characterized in that, At least a portion of the air-concentrating component is inserted into the first air outlet; or, the second air inlet of the air-concentrating component is flush with the first air outlet.
4. The oven nozzle according to claim 1, characterized in that, The air duct is movably disposed on the air nozzle body along the first direction.
5. The oven nozzle according to claim 4, characterized in that, The nozzle body has a first side and a second side that are relatively distributed along a second direction; The protective cover body has two abutting portions that are distributed opposite to each other along the second direction. The two abutting portions are respectively abutted on the first side and the second side of the nozzle body, and the second direction is perpendicular to the first direction.
6. The oven nozzle according to claim 5, characterized in that, The air duct includes: A fastener, threadedly engaged with the abutment portion, has one end configured to abut against the first side or the second side of the nozzle body to prevent the air guide shroud from moving relative to the nozzle body in the first direction.
7. The oven nozzle according to claim 1, characterized in that, The number of first air outlets is two, and the two first air outlets are distributed at intervals along a second direction on the nozzle body, the second direction being perpendicular to the first direction.
8. The oven nozzle according to claim 7, characterized in that, The protective cover body is provided with two air concentrators corresponding to each of the first air outlets, and the two air concentrators are distributed at intervals along the first direction on the protective cover body.
9. The oven nozzle according to claim 8, characterized in that, The air duct also includes: A wind deflector is disposed between the two wind-gathering components at the same first air outlet, and the wind deflector is fitted to the first air outlet.
10. The oven nozzle according to claim 9, characterized in that, Along the first direction, the protective cover body includes a telescopic part and two fixed parts. The telescopic part is telescopically disposed between the two fixed parts and connected to the fixed parts along the first direction. The wind concentrator is disposed on the fixed part. The wind deflector is telescopically disposed between the two wind concentrators along the first direction.
11. The oven nozzle according to claim 1, characterized in that, A sealing gasket is provided on the outer periphery of the protective cover body, and the sealing gasket is used to seal the protective cover body with the nozzle body.
12. An oven, characterized in that, Includes the oven nozzle according to any one of claims 1-10.
13. A battery manufacturing apparatus, characterized in that, Includes the oven nozzle according to any one of claims 1-11 or the oven according to claim 12.