Drying oven hull with flow equalizing structure and pole piece drying oven
By setting up air chambers and perforated plate structures inside the drying oven, the adaptive and uniform distribution of airflow is achieved, solving the problem of uneven airflow and improving the drying quality and production stability of the electrode sheets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KATOP AUTOMATION CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-22
AI Technical Summary
The uneven airflow distribution of the existing drying oven hull leads to poor electrode drying quality, and it is difficult to maintain the uniformity of airflow from the nozzles when the wind speed and pressure fluctuate, resulting in production accidents such as electrode misalignment.
The oven hull with a uniform flow structure includes an internal air cavity and first and second perforated plates. The first perforated plate converts kinetic energy into pressure potential energy for uniform distribution, while the second perforated plate acts as a pressure equalization barrier to ensure the uniformity of airflow in both the horizontal and vertical directions at the air nozzle.
It can maintain the uniformity of airflow at the nozzle even when wind speed and pressure fluctuate, improve the drying quality of the electrode sheets, avoid production accidents, and reduce economic costs.
Smart Images
Figure CN224266764U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery electrode drying, specifically to an oven hull and electrode drying oven with a uniform flow structure. Background Technology
[0002] In the production process of lithium batteries, after coating, the electrodes and separators need to be heated and dried through the air nozzles of an oven. The uniformity and stability of the air velocity at the air nozzles are important factors affecting the drying quality of the electrodes. The air nozzles are generally installed on the hull of the oven, and a hull often connects several to dozens of air nozzles. The oven hull is named for its boat-like shape. The circulating air enters from one side of the hull, is distributed by the fluid inside the hull, and then enters each air nozzle. The uniformity of the fluid distribution in the oven hull directly affects the uniformity of the air outlet from the air nozzles, and thus affects the drying quality of the electrodes. Existing technologies use bent deflectors inside the hull to divert and guide the wind field. However, traditional bent deflector structures rely on physical forced distribution. While they do have a certain diversion effect, their layout and design are complex. When the wind speed and pressure at the hull inlet fluctuate, the deflector structure struggles to meet the requirements for uniform flow distribution, making it difficult to evenly distribute the air to each nozzle. This results in uneven horizontal and vertical airflow at the nozzles, as well as asymmetrical lateral airflow, leading to poor electrode drying quality, electrode misalignment, and other production accidents, causing unnecessary economic losses. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an oven hull and electrode oven with a uniform flow structure, which can solve the problem of uneven flow distribution in the existing oven hull.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: On the one hand, a drying oven hull with a uniform flow structure is provided, including a hull body with an internal air cavity. The side and bottom surfaces of the hull body are respectively provided with an air inlet and an air nozzle, and the air nozzle and the air inlet are both connected to the air cavity. The air cavity is provided with a first mesh plate and a second mesh plate. The first mesh plate and the second mesh plate are perpendicular to each other. The first mesh plate faces the air nozzle and is located on the side of the air inlet closer to the air nozzle. The second mesh plate is arranged opposite to the air inlet.
[0005] As a further improvement to the above technical solution, the main body of the hull is wedge-shaped and has a trapezoidal side. The air inlet is located on the trapezoidal side, and the tip of the main body of the hull is far away from the air inlet.
[0006] As a further improvement to the above technical solution, a plurality of air nozzles are provided, and the plurality of air nozzles are evenly arranged along the length direction of the main body of the hull.
[0007] As a further improvement to the above technical solution, two first mesh plates are provided, with the two first mesh plates arranged side by side, and the second mesh plate is arranged vertically between the two first mesh plates.
[0008] As a further improvement to the above technical solution, a wing plate is provided on the side of each of the two first perforated plates that are close to each other, the second perforated plate is sandwiched between the two wing plates, and the three are connected by bolts.
[0009] As a further improvement to the above technical solution, the outer edges of the two first mesh plates are connected to the side of the hull body, and the second mesh plate is connected to the upper and lower bottom surfaces of the hull body.
[0010] As a further improvement to the above technical solution, the first perforated plate is flush with the edge of the air inlet on the side near the nozzle.
[0011] As a further improvement to the above technical solution, the orthographic projection of the air inlet is located in the middle of the second perforated plate.
[0012] As a further improvement to the above technical solution, the mesh size and shape of the first mesh plate and the mesh size of the second mesh plate are the same.
[0013] On the other hand, an electrode drying oven is provided, including an oven body and the aforementioned oven hull with a uniform flow structure, wherein the side of the hull body with the air nozzle is connected to the oven body.
[0014] The beneficial effects of this invention are as follows: When drying the electrode sheets, the airflow enters the air cavity through the air inlet. The first perforated plate can block the airflow at the air inlet, converting kinetic energy into pressure potential energy. Then, under the action of pressure, the airflow is evenly distributed to each nozzle, ensuring the uniformity of the wind field in the transverse and longitudinal directions of the hull. The second perforated plate can reduce the direct impact of the wind, block the unidirectional wind from the air inlet through pressure equalization, and then perform pressure equalization to ensure the symmetry of the transverse wind speed at the nozzles. In summary, the airflow flows out of the hull through the nozzles after being pressure equalized and divided by the two perforated plates, thus drying the electrode sheets. The principle of flow equalization by the perforated plates is pressure adaptive distribution, which can still ensure a good flow division effect when dealing with fluctuations in airflow speed and pressure at the air inlet, ensuring the uniformity of the airflow at the nozzles. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] Figure 1 This is a schematic diagram of the structure of the oven hull with a uniform flow structure provided in a preferred embodiment of the present invention;
[0017] Figure 2This is a schematic diagram of the structure of the oven hull with a uniform flow structure after the top cover is removed, according to a preferred embodiment of the present invention.
[0018] Figure 3 yes Figure 2 A structural diagram from another angle;
[0019] Reference numerals: 1. Main body of the ship;
[0020] 11. Air cavity; 12. Air inlet; 13. Air nozzle; 14. Trapezoidal side plate; 15. Support beam;
[0021] 111. First perforated plate; 112. Second perforated plate; 113. Wing plate. Detailed Implementation
[0022] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.
[0023] Please see Figures 1-3 A preferred embodiment of this utility model provides a drying oven hull with a uniform airflow structure, comprising a hull body 1 with an internal air chamber 11. The sides and bottom of the hull body 1 are respectively provided with air inlets 12 and air nozzles 13. Both the air nozzles 13 and the air inlets 12 are connected to the air chamber 11. When drying the electrode sheets, the airflow enters the air chamber 11 through the air inlets 12, is uniformly circulated in the air chamber 11, and is then output through the air nozzles 13, thereby improving the uniformity and stability of the airflow at the air nozzles 13 to ensure the drying quality of the electrode sheets.
[0024] For details, please see Figure 2The air chamber 11 contains a first perforated plate 111 and a second perforated plate 112. The first perforated plate 111 and the second perforated plate 112 are perpendicular to each other. The first perforated plate 111 faces the air nozzle 13 and is located on the side of the air inlet 12 closest to the air nozzle 13. The second perforated plate 112 is positioned opposite the air inlet 12. The first perforated plate 111 can block the wind at the air inlet 12, converting kinetic energy into pressure potential energy. Then, under the action of pressure, the airflow is evenly distributed to each air nozzle 13, ensuring the uniformity of the wind field in the transverse and longitudinal directions of the hull. The second perforated plate 112 can reduce the direct impact of the wind, equalize and block the unidirectional wind at the air inlet 12, and then equalize the pressure flow, ensuring the symmetrical transverse wind speed of the air nozzle 13. In summary, after the airflow is evenly divided by the two perforated plates, it flows out of the hull body 1 through the air nozzle 13 for electrode drying. The perforated plate's flow equalization principle is pressure adaptive distribution, which can still ensure a good flow distribution effect when dealing with air velocity and pressure fluctuations at the air inlet 12, and ensure the uniformity of airflow at the nozzle 13.
[0025] In this embodiment, the main body 1 of the hull is wedge-shaped and has a trapezoidal side plate 14. The air inlet 12 is set on the trapezoidal side plate 14, and the tip of the main body 1 of the hull is far away from the air inlet 12. The wind speed is strongest at the air inlet 12 and gradually weakens as it moves away from the air inlet 12. Setting the point far away from the air inlet 12 as the tip can have a converging effect to increase the wind speed.
[0026] Please see Figure 3 There are several air nozzles 13, and the air nozzles 13 are evenly arranged along the length of the hull body 1. Specifically, the air nozzles 13 are all located on the bottom surface of the hull body 1. By increasing the number of air nozzles 13, the heat is evenly distributed and local overcooling or overheating is avoided.
[0027] The main body of the hull 1 has two trapezoidal side plates 14, and several support beams 15 are connected between the two trapezoidal side plates 14. The support beams 15 are used to maintain the stability of the entire hull structure and to prevent the main body of the hull 1 from deforming in high temperature environments, thus maintaining its structural integrity.
[0028] There are two first mesh plates 111, which are arranged side by side. The second mesh plate 112 is arranged vertically between the two first mesh plates 111, which obtains a larger flow uniformity area in the transverse direction of the hull body 1, which is conducive to further improving the transverse wind speed symmetry of the nozzle 13.
[0029] Two first mesh plates 111 are provided with wing plates 113 on their adjacent sides. The second mesh plate 112 is sandwiched between the two wing plates 113, and the three are connected by bolts. The second mesh plate 112 can be firmly fixed between the two wing plates 113, ensuring the stability of the connection between the second mesh plate 112 and the two first mesh plates 111.
[0030] In other embodiments, two second perforated plates 112 arranged in parallel may also be provided, with the first perforated plate 111 vertically arranged between the two second perforated plates 112, thereby obtaining a larger flow uniformity area in the longitudinal direction of the hull body 1, which is beneficial to further improve the uniformity of airflow.
[0031] The outer edges of the two first mesh plates 111 are connected to the side of the hull body 1, and the second mesh plate 112 is connected to the upper and lower bottom surfaces of the hull body 1. The first mesh plates 111 and the second mesh plates 112 can be firmly fixed inside the hull body 1 to prevent them from tilting due to airflow.
[0032] The first perforated plate 111 is flush with the edge of the air inlet 12 near the nozzle 13. In other embodiments, the first perforated plate 111 may also be lower than the edge of the air inlet 12 near the nozzle 13. This position can well balance the lateral wind speed symmetry of the nozzle 13.
[0033] The orthographic projection of the air inlet 12 is located in the middle of the second perforated plate 112, which is located on the transverse symmetrical center line of the hull body 1. This position can effectively guide the air intake of the air inlet 12 evenly.
[0034] In this embodiment, the mesh size and shape of the first mesh plate 111 and the second mesh plate 112 are the same, with uniform specifications, which facilitates production. Specifically, the open area ratio of the two mesh plates is preferably 40±10%, the mesh diameter is preferably 19mm±6mm, the hole spacing is preferably 13±6mm, and the material thickness of the two mesh plates is preferably 1.5±0.5mm.
[0035] A preferred embodiment of this utility model also provides an electrode drying oven, including an oven body, a fan, a heating pack, a filter, and an oven hull with a uniform airflow structure as described in the above embodiment. The side of the hull body 1 equipped with air nozzles 13 is connected to the oven body. The airflow first passes through the fan, heating pack, and filter in sequence before entering the air inlet 12. After being split by the first mesh plate 111 and the second mesh plate 112, the airflow enters each air nozzle 13. The air nozzles 13 then deliver uniform airflow into the oven body. The two mesh plates can adaptively distribute pressure, ensuring a good airflow splitting effect even when dealing with fluctuations in airflow speed and pressure at the air inlet 12, thus ensuring the uniformity of airflow at the air nozzles 13.
[0036] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A drying oven hull with a uniform flow structure, characterized in that: The vessel includes a hull body with an internal air cavity. The hull body has an air inlet and an air nozzle on its side and bottom, respectively, and both the air nozzle and the air inlet are connected to the air cavity. The air cavity has a first mesh plate and a second mesh plate, which are perpendicular to each other. The first mesh plate faces the air nozzle and is located on the side of the air inlet closer to the air nozzle. The second mesh plate is arranged opposite to the air inlet.
2. The oven hull with a uniform flow structure according to claim 1, characterized in that: The main body of the hull is wedge-shaped with a trapezoidal side. The air inlet is located on the trapezoidal side, and the tip of the main body of the hull is far away from the air inlet.
3. The oven hull with a uniform flow structure according to claim 2, characterized in that: The air nozzles are provided in a plurality of manner, and the plurality of air nozzles are evenly arranged along the length of the main body of the hull.
4. The oven hull with a uniform flow structure according to claim 1, characterized in that: There are two first mesh plates, which are arranged side by side, and the second mesh plate is arranged vertically between the two first mesh plates.
5. The oven hull with a uniform flow structure according to claim 4, characterized in that: Each of the two first perforated plates has a wing plate on one side that is close to the other, and the second perforated plate is sandwiched between the two wing plates, and the three are connected by bolts.
6. The oven hull with a uniform flow structure according to claim 4, characterized in that: The outer edges of the two first mesh plates are connected to the sides of the hull body, and the second mesh plate is connected to the upper and lower bottom surfaces of the hull body.
7. The oven hull with a uniform flow structure according to claim 1, characterized in that: The first perforated plate is flush with the edge of the air inlet on the side near the nozzle.
8. The oven hull with a uniform flow structure according to claim 1, characterized in that: The orthographic projection of the air inlet is located in the middle of the second perforated plate.
9. The oven hull with a uniform flow structure according to claim 1, characterized in that: The mesh size and shape of the first mesh plate and the second mesh plate are the same.
10. An electrode drying oven, characterized in that: The oven includes a main body and an oven hull with a uniform flow structure as described in any one of claims 1-9, wherein the side of the hull body with the air nozzle is connected to the main body of the oven.