Intelligent air floatation drying oven

Abstract

The utility model relates to the technical field of battery pole piece drying production, and discloses an intelligent air floatation drying oven which comprises a drying oven body, a shaking detection assembly and an environment detection assembly. The jitter detection assemblies are arranged between the adjacent upper tuyeres and located above the lower tuyeres; a conveying channel is arranged between the upper tuyere and the lower tuyere; the drying oven body is provided with a circulating air channel and an exhaust channel which are communicated with the upper tuyere and the lower tuyere, and the environment detection assembly is arranged on the drying oven body. According to the scheme, the jitter detection assembly is used for detecting the air pressure, so that feedback adjustment of the blowing air pressure of the upper air nozzle and the lower air nozzle is achieved, and the pole piece conveying stability is guaranteed; the environment detection assembly detects the concentration and temperature of the solvent to control the air volume of the circulating air channel and the air exhaust channel, so that the concentration of the solvent is kept in a safe range, and energy conservation is achieved while the heating temperature is controlled to ensure the drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery electrode drying production technology, and in particular to an intelligent air flotation drying oven. Background Technology

[0002] Electrodes are a core component of lithium-ion batteries, primarily composed of current collectors and active materials coated on their surface, playing a crucial role in the battery's charging and discharging process. Wet coating methods typically involve uniformly coating a prepared slurry onto the current collector surface using coating equipment. The coated wet electrode contains a large amount of solvent and requires drying in an oven to remove the solvent, ensuring the active material adheres firmly to the current collector. Battery electrode ovens are one of the core pieces of equipment in lithium-ion battery production, and their technological development is closely related to advancements in battery manufacturing processes. In lithium-ion battery manufacturing, electrode preparation is a critical step determining battery performance, mainly including processes such as coating of positive and negative electrode active material slurries, drying, and rolling. The coated wet electrode needs to undergo an oven drying process to remove organic solvents (such as NMP or water-based solvents) from the slurry, allowing the active material, conductive agent, and binder to uniformly solidify on the current collector surface, forming a stable porous electrode structure. The uniformity and stability of this process directly affect the electrode's conductivity, mechanical strength, and the battery's energy density, cycle life, and other core performance characteristics.

[0003] Chinese patent CN202421228817.X discloses a lithium battery electrode drying oven, including an oven body and a first air chamber and a second air chamber disposed opposite to each other within the oven body. The first air chamber has multiple first air nozzles, and the second air chamber has multiple second air nozzles. The first and second air nozzles are offset relative to each other. An air-bearing roller for supporting the battery electrode is disposed between the first and second air chambers, spaced apart from the second air nozzles. The air-bearing roller replaces the traditional roller bearing. When the air-bearing roller runs within the oven, it avoids metal-to-metal friction between components, reducing frictional resistance. On the one hand, even when the lithium battery electrode and the air-bearing roller are at a small wrap angle, the air-bearing roller can rotate synchronously with the substrate without slippage, thus improving production efficiency. On the other hand, the air-bearing roller does not wear, preventing iron filings from entering the electrode and eliminating safety hazards. This drying oven design requires further improvement.

[0004] This invention overcomes the shortcomings of the prior art and provides an intelligent air flotation oven with the function of detecting air pressure and internal environment. Utility Model Content

[0005] The main objective of this invention is to provide an intelligent air flotation oven, comprising an oven body, a vibration detection component, and an environmental detection component. The oven body has several upper and lower air nozzles arranged alternately. The vibration detection component is located between adjacent upper air nozzles and above the lower air nozzles, and is used to detect the air pressure inside the oven body. The area between the upper and lower air nozzles forms a conveying channel.

[0006] The oven body is provided with a circulating air channel and an exhaust air channel that are connected to the upper air nozzle and the lower air nozzle. The environmental detection component is located in the oven body and is used to detect the solvent concentration at the exhaust air channel outlet or the temperature of the heated air inside the oven body.

[0007] Optionally, the number of the jitter detection components is three, which are evenly distributed at the beginning, middle and end of the conveying channel.

[0008] Optionally, the environmental detection component includes a vibration position sensor, a fixed base, a guide shaft, and a spacing adjustment handle;

[0009] The fixed base is fixedly connected to the oven body, the guide shaft is located on the fixed base, the vibration position sensor is connected to the guide shaft through a moving block, and the spacing adjustment handle is located at the beginning or end of the guide shaft.

[0010] Optionally, the upper air nozzle and the lower air nozzle are connected to the circulating air channel via an upper air duct and a lower air duct, respectively. An upper air damper is provided at the connection between the upper air duct and the circulating air channel, and a lower air damper is provided at the connection between the lower air duct and the circulating air channel.

[0011] The upper leaflet of the upper wind door and the lower leaflet of the lower wind door are respectively connected to the actuator of the air inlet electric valve.

[0012] The vibration position sensor is connected to the air inlet electric valve actuator, and the air inlet electric valve actuator controls the upper leaf of the upper air door and the lower leaf of the lower air door according to the vibration position sensor signal.

[0013] Optionally, the circulating air duct is connected to a fresh air inlet, which is located at the top of the oven body. The fresh air inlet is equipped with a fresh air regulating fan and is connected to the outside of the oven body. The oven body is equipped with a circulating fan, which is connected to the circulating air duct. The fresh air regulating fan is controlled and connected to a fresh air electric damper actuator.

[0014] Optionally, the exhaust duct is connected to the space of the conveying duct, the exhaust duct is connected to the outside of the oven body through the exhaust component, and the space of the conveying duct is connected to the circulating air duct.

[0015] Optionally, the exhaust assembly includes an exhaust motor, an exhaust duct, and an exhaust hood. The exhaust hood is located within the space of the conveying channel. The exhaust hood has an air mesh at its inlet and its outlet is connected to the inlet of the exhaust channel. The outlet of the exhaust channel is connected to the exhaust duct. The exhaust duct is equipped with the exhaust motor, which is located at the top of the oven body. The exhaust duct contains an exhaust regulating fan, which is controlled and connected to an exhaust electric damper actuator.

[0016] Optionally, a heating component is provided in the circulating air duct, and the heating component is located between the circulating fan and the upper and lower air doors.

[0017] Optionally, the environmental detection component includes a solvent concentration detection sensor and a thermocouple. The thermocouple is disposed between the heating component and the upper and lower air dampers and is used to detect the air temperature after being heated by the heating component in the circulating air channel. The solvent concentration detection sensor is disposed in the exhaust pipe and is used to detect the air solvent concentration.

[0018] Optionally, the thermocouple is controlled to the heating assembly, and the solvent concentration detection sensor is controlled to the fresh air electric valve actuator, the exhaust electric valve actuator, and the heating assembly, respectively.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The intelligent air flotation drying oven provided by this utility model uses a vibration detection component between the upper and lower air nozzles to detect air pressure, thereby achieving feedback adjustment of the air pressure of the upper and lower air nozzles to ensure the stability of electrode conveying. The circulating air channel and exhaust air channel are controlled by detecting the solvent concentration through an environmental detection component to keep the solvent concentration within a safe range. The heating temperature is controlled by detecting the air temperature through an environmental detection component, which can ensure drying efficiency while achieving energy saving. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 This is a schematic diagram of an embodiment of the intelligent air flotation drying oven of this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of an embodiment of the intelligent air flotation drying oven of this utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the intelligent air flotation drying oven of this utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the internal structure of an embodiment of the intelligent air flotation drying oven of this utility model. Figure 2 ;

[0026] Figure 5 This is a schematic diagram showing the vibration detection component setup in an embodiment of the intelligent air flotation oven of this utility model;

[0027] Figure 6 This is a schematic diagram of the vibration detection component structure in an embodiment of the intelligent air flotation oven of this utility model;

[0028] Figure 7 This is a schematic diagram of the circulating air channel and exhaust air channel of an embodiment of the intelligent air flotation drying oven of this utility model;

[0029] Figure 8 This is a schematic diagram of the circulating air channel in an embodiment of the intelligent air flotation drying oven of this utility model;

[0030] Figure 9 This is a schematic diagram of the exhaust component of an embodiment of the intelligent air flotation drying oven of this utility model;

[0031] Figure 10 This is a schematic diagram of a conventional circulating air duct and an exhaust air duct.

[0032] Figure label:

[0033] 1-Oven body; 11-Upper air nozzle; 111-Upper air duct; 112-Upper air damper; 1121-Upper fan blades; 12-Lower air nozzle; 121-Lower air duct; 122-Lower air damper; 1221-Lower fan blades; 13-Conveyor channel; 14-Circulating air channel; 141-Fresh air inlet; 1411-Fresh air regulating fan blades; 142-Circulating fan; 15-Exhaust air duct; 16-Exhaust air assembly; 161-Exhaust fan motor; 162 - Exhaust duct; 163- Exhaust hood; 1631- Air mesh; 2- Environmental monitoring components; 21- Solvent concentration sensor; 22- Thermocouple; 3- Vibration detection components; 31- Vibration position sensor; 32- Fixed base; 33- Guide shaft; 34- Spacing adjustment handle; 35- Moving block; 4- Inlet electric valve actuator; 5- Fresh air electric damper actuator; 6- Exhaust electric damper actuator; 7- Heating components. Detailed Implementation

[0034] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0035] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium, or as a connection within two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0036] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1-9 The diagram shown is a schematic representation of an embodiment of the intelligent air flotation drying oven provided by this utility model.

[0038] Please refer to Figure 1-9This example is used for drying battery electrode sheets after double-sided coating, and includes an oven body 1, a vibration detection component 3, and an environmental detection component 3. The oven body 1 has several upper air nozzles 11 and lower air nozzles 12 arranged alternately. The vibration detection component 3 is located between adjacent upper air nozzles 11 and above the lower air nozzles 12, and is used to detect the air pressure inside the oven body 1. A conveying channel 13 is formed between the upper air nozzles 11 and the lower air nozzles 12. Specifically, the vibration detection component 3 is located within a triangular area enclosed by two adjacent upper air nozzles 11 and one lower air nozzle 12, and is fixedly connected to the upper part of the conveying channel 13.

[0039] The oven body 1 is provided with a circulating air duct 14 and an exhaust air duct 15 connected to the upper air nozzle 11 and the lower air nozzle 12. An environmental detection component 3 is located in the oven body 1 and is used to detect the solvent concentration at the outlet of the exhaust air duct 15 or the temperature of the heated air inside the oven body 1. The circulating air duct 14 is connected to the outside and supplies outside air to circulate inside the space where the conveying duct 13 is located. The exhaust air duct 15 is connected to the outside and is used to discharge the waste gas in the space where the conveying duct 13 is located to the external environment.

[0040] Furthermore, such as Figure 5 As shown, there are three vibration detection components 3, which are evenly distributed at the beginning, middle and end of the conveying channel 13. The three vibration detection components 3 detect the air pressure at the beginning, middle and end of the conveying channel 13 respectively to ensure the accuracy of the air pressure detection inside the conveying channel 13.

[0041] In one embodiment, such as Figure 6 As shown, the environmental detection component 3 includes a vibration position sensor 31, a fixed base 32, a guide shaft 33, and a spacing adjustment handle 34. The fixed base 32 is fixedly connected to the oven body 1, the guide shaft 33 is located on the fixed base 32, the vibration position sensor 31 is connected to the guide shaft 33 through a moving block 35, and the spacing adjustment handle 34 is located at the beginning or end of the guide shaft 33.

[0042] The fixed base 32 is used for fixed connection with the interior of the oven body 1. The guide shaft 33 can specifically be a lead screw structure. The moving block 35 is threadedly connected to the guide shaft 33. By rotating the pitch adjustment handle 34, the guide shaft 33 is rotated, causing the moving block 35 to move along the guide shaft 33, thereby adjusting the position of the vibration position sensor 31 on the guide shaft 33. Specifically, there are two sets of moving blocks 35 and vibration position sensors 31. In other embodiments, the pitch adjustment handle 34 can also be replaced by a motor drive.

[0043] In one embodiment, the upper air nozzle 11 and the lower air nozzle 12 are connected to the circulating air channel 14 via the upper air duct 111 and the lower air duct 121, respectively. An upper air damper 112 is provided at the connection between the upper air duct 111 and the circulating air channel 14, and a lower air damper 122 is provided at the connection between the lower air duct 121 and the circulating air channel 14. The upper blade 1121 of the upper air damper 112 and the lower blade 1221 of the lower air damper 122 are respectively controlled and connected to the air inlet electric valve actuator 4.

[0044] The vibration position sensor 31 is connected to the air inlet electric valve actuator 4. The air inlet electric valve actuator 4 controls the upper fan blade 1121 of the upper air damper 112 and the lower fan blade 1221 of the lower air damper 122 according to the signal from the vibration position sensor 31. The vibration position sensor 31 detects the air pressure blown out by the upper air nozzle 11 and the lower air nozzle 12, and feeds the information back to the air inlet electric valve actuator 4. The air inlet electric valve actuator 4 adjusts the upper fan blade 1121 or the lower fan blade 1221, thereby adjusting the air volume of the upper air nozzle 11 and the lower air nozzle 12. The position balance of the electrode in the conveying channel 13 is controlled by the change of air pressure, so as to ensure that the air flotation position of the electrode is stably dried in the oven.

[0045] In one embodiment, the circulating air duct 14 is connected to the fresh air inlet 141, which is located at the top of the oven body 1. The fresh air inlet 141 contains a fresh air regulating fan 1411 and is connected to the outside of the oven body 1. The oven body 1 is equipped with a circulating fan 142, which is connected to the circulating air duct 14. The fresh air regulating fan 1411 is connected to a fresh air electric damper actuator 5 for control. The actuator 5 controls the fresh air regulating fan 1411 to adjust the size of the air outlet, thereby controlling the airflow of the internal circulating air duct 14.

[0046] In one embodiment, such as Figure 7 As shown, the exhaust duct 15 and the conveying duct 13 are connected in space. The exhaust duct 15 is connected to the outside of the oven body 1 through the exhaust assembly 16, and the space where the conveying duct 13 is located is connected to the circulating air duct 14. The air volume inside the circulating air duct 14 is controlled by controlling the exhaust volume of the exhaust duct 15. The exhaust duct 15 and the circulating air duct 14 are independently separated to avoid... Figure 10 The airflow at the outlet of the conventional exhaust duct 15 and the air inlet of the circulating air duct 14 interferes with each other, resulting in abnormal exhaust volume.

[0047] Furthermore, such as Figure 9As shown, the exhaust assembly 16 includes an exhaust motor 161, an exhaust duct 162, and an exhaust hood 163. The exhaust hood 163 is located within the space of the conveying channel 13. The inlet of the exhaust hood 163 is equipped with an air mesh 1631, and the outlet of the exhaust hood 163 is connected to the inlet of the exhaust channel 15. The outlet of the exhaust channel 15 is connected to the exhaust duct 162. The exhaust duct 162 is equipped with the exhaust motor 161, which is located at the top of the oven body 1. The exhaust motor 161 drives the exhaust air inside the oven body 1. An exhaust regulating fan (not shown) is installed inside the exhaust duct 162. The exhaust regulating fan is connected to an exhaust electric damper actuator 6, which controls the exhaust regulating fan to adjust the size of the air outlet, thereby controlling the exhaust volume.

[0048] In one embodiment, a heating component 7 is provided in the circulating air duct 14, and the heating component 7 is located between the circulating fan 142 and the upper damper 112 and the lower damper 122. The heating component 7 is used to heat the air driven by the circulating fan 142, thereby raising the air temperature in the circulating air duct 14. The heating component 7 can specifically be a heating tube.

[0049] In one embodiment, the environmental monitoring component 2 includes a solvent concentration detection sensor 21 and a thermocouple 22. Thermocouple 22 is disposed between the heating component 7 and the upper air damper 112 and the lower air damper 122, and is used to detect the air temperature heated by the heating component 7 in the circulating air channel 14. Solvent concentration detection sensor 21 is disposed in the exhaust duct 162 and is used to detect the air solvent concentration.

[0050] Specifically, thermocouple 22 is connected to the heating assembly 7 for control. The heating temperature of the heating assembly 7 is adjusted based on the temperature feedback detected by thermocouple 22, thereby achieving intelligent control of the heating assembly and reducing drying heating energy consumption. Solvent concentration detection sensor 21 is connected to the fresh air electric damper actuator 5, the exhaust electric damper actuator 6 for control, and the heating assembly 7, respectively.

[0051] The fresh air volume, exhaust air volume, and heating temperature are adjusted by regulating the fresh air electric damper actuator 5 and the exhaust electric damper actuator 6 based on the data detected by the solvent concentration detection sensor 21. The drying and evaporation concentration in the middle section of the conveying channel 13 is set within a safe range. The exhaust air volume and frequency are controlled by the frequency converter of the exhaust electric damper actuator according to different set concentration ranges, while the fresh air volume and frequency are controlled by the fresh air electric damper actuator. When the solvent concentration increases, the exhaust air volume and fresh air volume are increased; when the solvent concentration decreases, the exhaust air volume and fresh air volume are decreased. At the beginning and end sections where the concentration value is particularly low, the heating component 7 is simultaneously controlled to lower the heating temperature.

[0052] In summary, the embodiments provided by this utility model, by setting a vibration detection component between the upper and lower air nozzles to detect air pressure, achieve feedback adjustment of the blowing air pressure of the upper and lower air nozzles to ensure the stability of electrode conveying; by using an environmental detection component to detect solvent concentration to control the air volume of the circulating air channel and the exhaust air channel to keep the solvent concentration within a safe range; and by using an environmental detection component to detect air temperature to control the heating temperature, drying efficiency can be ensured while achieving energy saving.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An intelligent air-floating drying oven, characterized in that, The device includes an oven body, a vibration detection component, and an environmental detection component. The oven body has several upper and lower air nozzles inside, which are arranged alternately. The vibration detection component is located between adjacent upper air nozzles and above the lower air nozzles. The vibration detection component is used to detect the air pressure inside the oven body. The area between the upper and lower air nozzles is a conveying channel. The oven body is provided with a circulating air channel and an exhaust air channel that are connected to the upper air nozzle and the lower air nozzle. The environmental detection component is located in the oven body and is used to detect the solvent concentration at the exhaust air channel outlet or the temperature of the heated air inside the oven body.

2. The intelligent air flotation drying oven according to claim 1, characterized in that, The number of jitter detection components is three, which are evenly distributed at the beginning, middle and end of the conveying channel.

3. The intelligent air flotation drying oven according to claim 1, characterized in that, The environmental detection component includes a vibration position sensor, a fixed base, a guide shaft, and a spacing adjustment handle; The fixed base is fixedly connected to the oven body, the guide shaft is located on the fixed base, the vibration position sensor is connected to the guide shaft through a moving block, and the spacing adjustment handle is located at the beginning or end of the guide shaft.

4. The intelligent air flotation drying oven according to claim 3, characterized in that, The upper and lower air nozzles are connected to the circulating air channel via upper and lower air ducts, respectively. An upper air damper is provided at the connection between the upper air duct and the circulating air channel, and a lower air damper is provided at the connection between the lower air duct and the circulating air channel. The upper leaflet of the upper wind door and the lower leaflet of the lower wind door are respectively connected to the actuator of the air inlet electric valve. The vibration position sensor is connected to the air inlet electric valve actuator, and the air inlet electric valve actuator controls the upper leaf of the upper air door and the lower leaf of the lower air door according to the vibration position sensor signal.

5. The intelligent air flotation drying oven according to claim 4, characterized in that, The circulating air duct is connected to the fresh air inlet, which is located at the top of the oven body. The fresh air inlet is equipped with a fresh air regulating fan and is connected to the outside of the oven body. The oven body is equipped with a circulating fan, which is connected to the circulating air duct. The fresh air regulating fan is controlled and connected to the fresh air electric damper actuator.

6. The intelligent air flotation drying oven according to claim 5, characterized in that, The exhaust duct is connected to the space of the conveying duct, the exhaust duct is connected to the outside of the oven body through the exhaust component, and the space of the conveying duct is connected to the circulating air duct.

7. The intelligent air flotation drying oven according to claim 6, characterized in that, The exhaust assembly includes an exhaust motor, an exhaust duct, and an exhaust hood. The exhaust hood is located within the space of the conveying channel. The exhaust hood has an air mesh at its inlet and its outlet is connected to the inlet of the exhaust channel. The outlet of the exhaust channel is connected to the exhaust duct. The exhaust duct is equipped with the exhaust motor, which is located at the top of the oven body. The exhaust duct contains an exhaust regulating fan, which is controlled and connected to an exhaust electric damper actuator.

8. The intelligent air flotation drying oven according to claim 7, characterized in that, A heating component is provided in the circulating air duct, and the heating component is located between the circulating fan and the upper and lower air doors.

9. The intelligent air flotation drying oven according to claim 8, characterized in that, The environmental monitoring component includes a solvent concentration sensor and a thermocouple. The thermocouple is located between the heating component and the upper and lower air dampers to detect the air temperature after heating by the heating component in the circulating air channel. The solvent concentration sensor is located in the exhaust pipe to detect the air solvent concentration.

10. The intelligent air flotation drying oven according to claim 9, characterized in that, The thermocouple is controlled and connected to the heating assembly, and the solvent concentration detection sensor is controlled and connected to the fresh air electric valve actuator, the exhaust air electric valve actuator, and the heating assembly, respectively.

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