Coating combined type drying oven
By integrating a coating composite oven with an air nozzle, an infrared heating component, and a laser heating component, the problems of electrode slurry convection and unevenness caused by hot air drying are solved, achieving a more efficient and uniform drying effect and improving electrode quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAIAN MANNSTE TECH CO LTD
- Filing Date
- 2025-02-13
- Publication Date
- 2026-05-01
AI Technical Summary
When existing coating ovens use hot air to dry through nozzles, the electrode sheets are easily disturbed by the hot air, which leads to problems such as surface bubbles formed by slurry convection and uneven drying.
The coating composite drying oven adopts integrated air nozzles, infrared heating components and laser heating components, and combines temperature detection components to regulate the temperature inside the oven in real time, reducing the dependence of hot air on the slurry and improving drying uniformity and efficiency.
It reduces quality problems caused by hot air disturbance, improves the drying quality and speed of the electrode sheets, and has a more compact structure with high space utilization.
Smart Images
Figure CN224181243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coating and drying technology, specifically to a coating composite drying oven. Background Technology
[0002] Coating and drying is a crucial step in the front-end coating process of lithium batteries, and the drying effect directly affects the quality of the final product.
[0003] In related technologies, nozzles are usually installed in the coating oven to blow out hot air to heat the wet film surface and transfer energy to dry the electrode. However, using hot air drying makes the electrode susceptible to hot air disturbance during the drying process, which can lead to problems such as slurry convection on the electrode forming surface bubbles and uneven drying. Utility Model Content
[0004] This invention provides a coating composite drying oven, which solves the technical problems of existing coating drying ovens that use hot air drying through nozzles, which makes the electrode sheets easily disturbed by hot air during the drying process, resulting in surface bubbles formed by slurry convection on the electrode sheets and uneven drying.
[0005] In view of this, the present invention provides a coating composite drying oven, comprising:
[0006] The housing has an inlet and an outlet for the electrode sheets to pass through;
[0007] An air inlet assembly is disposed on at least one of the upper and lower sides of the housing, and includes multiple air nozzles; the multiple air nozzles are spaced apart along the conveying direction of the electrode sheet;
[0008] A heating module is disposed on at least one of the upper and lower sides of the housing, including an infrared heating component and a laser heating component; a set of the infrared heating component or the laser heating component is disposed between two adjacent air nozzles;
[0009] Temperature detection components are installed inside the chamber and are communicatively connected to the heating module and the air inlet component, for detecting the temperature inside the chamber.
[0010] In one optional embodiment, the infrared heating component and the laser heating component are alternately arranged along the conveying direction of the electrode.
[0011] In one optional embodiment, multiple sets of both the infrared heating component and the laser heating component are provided, with all the infrared heating components located upstream of all the laser heating components.
[0012] In one optional embodiment, the laser heating component is provided in two sets, and the infrared heating component is provided in multiple sets; the multiple sets of infrared heating components are disposed between the two sets of laser heating components.
[0013] In one optional embodiment, the temperature detection component includes a first temperature detection element and a second temperature detection element; the first temperature detection element is disposed inside the housing and is used to detect the surface temperature of the electrode; the second temperature detection element is disposed inside the housing and is used to detect the internal temperature of the housing.
[0014] In one optional embodiment, the temperature detection component is provided in multiple sets, and the multiple sets of temperature detection components are evenly spaced along the conveying direction of the electrode.
[0015] In one optional embodiment, the housing is provided with an exhaust vent, and the infrared heating component and the laser heating component are provided with multiple exhaust mesh holes on both sides along the electrode conveying direction, and the exhaust mesh holes are connected to the exhaust vent.
[0016] In one optional embodiment, the infrared heating assembly includes a mounting plate, an infrared lamp, and a cooling pipe; the mounting plate is disposed on the inner side wall of the housing, the infrared lamp and the cooling pipe are both disposed on the mounting plate, and the cooling pipe is used to introduce a cooling medium.
[0017] And / or, the laser heating assembly includes a laser and a cooling plate; the cooling plate is disposed on the inner side wall of the housing, the laser is disposed on the cooling plate, and the inner cavity of the cooling plate is connected to an external cooling device to circulate and provide a cooling medium;
[0018] And / or, a differential pressure sensor is provided inside the box to detect the internal pressure of the box.
[0019] In one optional embodiment, the air inlet assembly is provided on both the upper and lower sides of the housing, and the air nozzles located on the upper and lower sides of the housing are offset in the conveying direction of the electrode sheet.
[0020] In one optional embodiment, heating modules are provided on both the upper and lower sides of the housing.
[0021] The technical solution of this utility model has the following advantages:
[0022] 1. This utility model integrates a nozzle, an infrared heating component, and a laser heating component to dry the electrode sheets, reducing the problem of binder floating and also reducing the dependence on the transfer of heat from the hot air blown out by the nozzle to the slurry. Compared with drying the electrode sheets by the nozzle alone, it reduces the requirements for the air volume and temperature of the nozzle, thereby reducing the disturbance of the hot air field generated by the nozzle to the slurry, avoiding quality problems such as uneven baking, cracking, and bubbles, and improving the quality of the electrode sheets. Furthermore, the integration of the nozzle, infrared heating component, and laser heating component in the drying chamber increases the drying speed. While ensuring drying efficiency, it can make the overall structure more compact, reduce the length of the chamber, and improve space utilization.
[0023] 2. This utility model uses a temperature detection component to monitor the drying temperature inside the chamber in real time, so as to monitor the internal temperature of the chamber in real time and control the power of the air inlet component and the heating module to regulate the internal temperature of the chamber, so as to ensure the drying effect, improve the drying quality of the electrode sheets, and improve the adjustment accuracy. Attached Figure Description
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 A schematic diagram of the coating composite oven provided by this utility model from a first-view perspective;
[0026] Figure 2 for Figure 1 The first sectional view at point AA;
[0027] Figure 3 for Figure 1 The second sectional view at point AA;
[0028] Figure 4 A structural schematic diagram of the upper housing provided by this utility model from a second perspective;
[0029] Figure 5 for Figure 4 A schematic diagram of the first structural type in the B-direction view;
[0030] Figure 6 for Figure 4 A schematic diagram of the second structure in the B-direction view;
[0031] Figure 7 for Figure 4A schematic diagram of the third structure in the B-direction view.
[0032] Explanation of reference numerals in the attached figures:
[0033] 1. Housing; 2. Electrode; 3. Inlet; 4. Outlet; 5. Air nozzle; 6. Infrared heating component; 7. Laser heating component; 8. First temperature sensor; 9. Second temperature sensor; 10. Exhaust mesh; 11. Differential pressure sensor. Detailed Implementation
[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0038] The following is combined with Figures 1 to 7 The following describes embodiments of the present invention.
[0039] According to an embodiment of the present invention, a coating composite drying oven is provided, comprising: a box body 1 having an inlet 3 and an outlet 4 for the electrode sheet 2 to pass through; an air inlet assembly disposed on at least one of the upper and lower sides inside the box body 1, including a plurality of air nozzles 5; the plurality of air nozzles 5 being spaced apart along the conveying direction of the electrode sheet 2; a heating module disposed on at least one of the upper and lower sides inside the box body 1, including an infrared heating assembly 6 and a laser heating assembly 7; a set of infrared heating assemblies 6 or laser heating assemblies 7 being disposed between two adjacent air nozzles 5; and a temperature detection assembly disposed inside the box body 1, and all of which are communicatively connected to the heating module and the air inlet assembly, for detecting the temperature inside the box body 1.
[0040] It should be noted that the air intake assembly and heating module are located above or below the electrode 2.
[0041] In this embodiment, when drying the electrode 2, the electrode 2 enters the chamber 1 through the inlet 3, passes through the air nozzles 5, infrared heating components 6, and laser heating components 7 located on the upper or lower side of the chamber 1 for drying, and is then conveyed out through the outlet 4 of the chamber 1 to complete the drying process. During the drying process, the infrared heating components 6 and laser heating components 7 inside the chamber 1 improve the drying efficiency. At the same time, the temperature detection component monitors the drying temperature status inside the chamber 1 in real time, so as to monitor the internal temperature of the chamber 1 in real time and control the power of the air inlet component and the heating module to regulate the internal temperature of the chamber 1, ensuring the drying effect and improving the drying quality of the electrode 2. In addition, the infrared heating components 6 and laser heating components 7 are used for drying, through The slurry on electrode 2 achieves heating and drying by absorbing light energy efficiently. Utilizing the drying principle of drying from the inside out, the problem of binder floating is reduced. At the same time, the dependence on the hot air blown out by nozzle 5 to transfer heat to the slurry is also reduced. Compared with drying electrode 2 by nozzle 5 alone, the requirements for the air volume and temperature of nozzle 5 are reduced, thereby reducing the hot air disturbance of the slurry caused by the air field generated by nozzle 5. This avoids quality problems such as uneven baking, cracking, and bubbles, and improves the quality of electrode 2. Furthermore, the drying process integrates nozzle 5, infrared heating component 6, and laser heating component 7 within the housing 1 to increase the drying speed. While ensuring drying efficiency, the overall structure can be made more compact, reducing the length of housing 1 and improving space utilization.
[0042] In one embodiment, such as Figure 6 As shown, the infrared heating component 6 and the laser heating component 7 are arranged alternately along the conveying direction of the electrode 2.
[0043] In this embodiment, the infrared heating component 6 and the laser heating component 7 are arranged alternately along the conveying direction of the electrode 2, so that the infrared heating component 6 and the laser heating component 7 alternately and evenly dry the electrode 2, thereby improving the uniformity of baking and ensuring the drying effect and quality of the electrode 2.
[0044] As a possible implementation method, it can also be, for example... Figure 2 , Figure 3 and Figure 5 As shown, multiple sets of infrared heating components 6 and laser heating components 7 are provided, with all infrared heating components 6 located upstream of all laser heating components 7. Since the penetrability of infrared light is weaker than that of laser light, multiple sets of infrared heating components 6 are placed in the front half of the housing 1 to preheat the electrode 2 first, followed by multiple sets of laser heating components 7 to completely dry the electrode 2. This ensures that the electrode 2 is gradually, evenly, and thoroughly dried, improving the drying effect and guaranteeing the quality of the electrode 2.
[0045] As a possible implementation method, it can also be, for example... Figure 7 As shown, there are two sets of laser heating components 7 and multiple sets of infrared heating components 6; the multiple sets of infrared heating components 6 are arranged between the two sets of laser heating components 7. By setting laser heating components 7 at both ends of the electrode sheet 2 in the conveying direction, and simultaneously setting multiple sets of infrared heating components 6 between the two sets of laser heating components 7, the strong penetrating power of laser is utilized to allow the slurry on the electrode sheet 2 to be initially dried and solidified by laser drying when it enters the chamber 1, avoiding the influence of the air field of the nozzle 5. Then, the infrared heating components 6 gradually and evenly heat the electrode sheet 2 to ensure uniform drying. Finally, the laser heating components 7 are used to completely dry the electrode sheet 2, ensuring the drying effect.
[0046] In one embodiment, such as Figures 2 to 4 As shown, the temperature detection assembly includes a first temperature detection element 8 and a second temperature detection element 9; the first temperature detection element 8 is disposed inside the housing 1 and is used to detect the surface temperature of the electrode 2; the second temperature detection element 9 is disposed inside the housing 1 and is used to detect the internal temperature of the housing 1.
[0047] In this embodiment, by setting a first temperature detection element 8 to detect the surface temperature of the electrode 2 and setting a second temperature detection element 9 to detect the internal temperature of the chamber 1, the accuracy of temperature control of the heating module and air intake assembly is improved, temperature errors are eliminated, and drying quality is improved.
[0048] Specifically, the first temperature detection element 8 is an infrared temperature sensor to detect the surface temperature of the electrode 2; the second temperature detection element 9 is a PT100 temperature sensor to detect the internal temperature of the housing 1.
[0049] In one embodiment, such as Figures 2 to 4 As shown, the temperature detection component is provided in multiple sets, and the multiple sets of temperature detection components are evenly spaced along the conveying direction of the electrode 2.
[0050] In this embodiment, multiple temperature detection components are set and evenly spaced in the conveying direction of the electrode 2 to further improve the temperature detection accuracy, thereby improving the control accuracy of the internal temperature of the housing 1.
[0051] In one embodiment, such as Figures 5 to 7 As shown, the housing 1 is provided with an exhaust vent, and the infrared heating component 6 and the laser heating component 7 are provided with multiple exhaust mesh holes 10 on both sides along the conveying direction of the electrode 2, and the exhaust mesh holes 10 are connected to the exhaust vent.
[0052] In this embodiment, by setting exhaust mesh 10 on the infrared heating component 6 and the laser heating component 7, and by connecting the exhaust mesh 10 to the exhaust port, the exhaust port can be connected to the external exhaust equipment. This allows the water or organic solvent evaporated after the slurry is dried to be discharged outside the chamber 1 through the exhaust mesh 10 during the drying process of the counter electrode 2. This prevents the solvent from condensing and remaining on the inner wall of the chamber 1, and further improves the drying effect.
[0053] In one embodiment, the infrared heating assembly 6 includes a mounting plate, an infrared lamp, and a cooling pipe; the mounting plate is disposed on the inner side wall of the housing 1, and both the infrared lamp and the cooling pipe are disposed on the mounting plate, with the cooling pipe used to introduce a cooling medium.
[0054] It should be noted that the infrared lamps are connected to external control equipment via high-temperature wires to increase power consumption.
[0055] In this embodiment, the infrared lamp tube generates heat to dry the electrode 2, while a cooling medium is introduced into the cooling tube to cool the infrared lamp tube, thus preventing the infrared lamp tube from cracking due to a sudden increase in temperature and improving the service life of the infrared lamp tube.
[0056] As an alternative implementation, the infrared heating assembly 6 may include a mounting plate and an infrared heating plate; the mounting plate is disposed on the inner side wall of the housing 1, and the infrared plate is disposed on the mounting plate. The infrared heating plate can be used to dry the electrode 2.
[0057] Specifically, the exhaust mesh 10 is installed on the mounting plate.
[0058] In one embodiment, the laser heating assembly 7 includes a laser and a cooling plate; the cooling plate is disposed on the inner side wall of the housing 1, the laser is disposed on the cooling plate, and the inner cavity of the cooling plate is connected to an external cooling device to circulate and supply cooling medium.
[0059] In this embodiment, the electrode 2 is dried by the laser, and at the same time, the cooling medium is circulated into the inner cavity of the cooling plate by an external cooling device such as a cooling machine, so that the cooling plate can dissipate heat from the laser, avoid the temperature from being too high and affecting the performance of the laser, and improve the service life.
[0060] Specifically, the exhaust mesh 10 is installed on the cooling plate.
[0061] In one embodiment, such as Figure 2 As shown, a differential pressure sensor 11 is installed inside the housing 1 to detect the internal pressure of the housing 1.
[0062] In this embodiment, a differential pressure sensor 11 is installed inside the chamber 1 to detect the internal pressure of the chamber 1, ensuring that the internal cavity of the chamber 1 is dried under negative pressure conditions, thus ensuring the drying effect.
[0063] In one embodiment, air inlet components are provided on both the upper and lower sides of the housing 1, and the air nozzles 5 located on the upper and lower sides of the housing 1 are offset in the conveying direction of the electrode 2.
[0064] In this embodiment, air inlet components are provided on both the upper and lower sides of the housing 1. That is, air nozzles 5 are provided above and below the electrode 2. The air nozzles 5 located above the electrode 2 and the air nozzles 5 located below the electrode 2 are staggered to make the air field inside the housing 1 more uniform and avoid only one side of the electrode 2 being blown by air, which would cause the electrode 2 to deform.
[0065] In one embodiment, heating modules are provided on both the upper and lower sides of the housing 1.
[0066] Specifically, heating modules are provided on both the upper and lower sides of the chamber 1, which can heat both sides of the electrode 2 simultaneously. The heating modules on the upper and lower sides are staggered to further improve the drying speed and the uniformity of baking.
[0067] Specifically, the housing 1 includes an upper housing and a lower housing, which together form an inner cavity for the electrode 2 to pass through.
[0068] Specifically, the housing 1 is equipped with multiple guide rollers, which are spaced apart along the conveying direction of the electrode 2 to support the electrode 2.
[0069] Specifically, one end of the infrared heating component 6 is snapped to the housing 1, and the other end is screwed to the housing 1, which facilitates installation and disassembly.
[0070] Specifically, one end of the laser heating component 7 is snapped to the housing 1, and the other end is screwed to the housing 1, which facilitates installation and disassembly.
[0071] The specific working principle of the coating composite drying oven provided in this embodiment is as follows: When drying the electrode 2, the electrode 2 enters the oven 1 through the inlet 3, passes through the air nozzle 5, infrared heating component 6, and laser heating component 7 set in the oven 1 for drying, and is then conveyed out through the outlet 4 of the oven 1 to complete the drying process. During the drying process, the drying efficiency is improved by the infrared heating component 6 and laser heating component 7 in the oven 1. At the same time, the drying temperature status in the oven 1 is detected in real time by the first temperature detection element 8 and the second temperature detection element 9, and the power of the air inlet component and the heating module is controlled to regulate the internal temperature of the oven 1, ensuring the drying effect and improving the drying quality of the electrode 2. The arrangement position of the air inlet component and the heating module, as well as the arrangement of the infrared heating component 6 and the laser heating component 7, can be selected according to actual needs. In addition, the infrared heating component 6 and the laser heating component 7 are used for drying, and the slurry on the electrode 2 is heated by the light energy. The absorption efficiency achieves heating and drying, utilizing its drying principle from the inside out, which reduces the problem of binder floating and also reduces the dependence on the transfer of heat to the slurry by the hot air blown out through the nozzle 5. Compared with drying the electrode 2 by the nozzle 5 alone, it reduces the requirements for the air volume and temperature of the nozzle 5, thereby reducing the hot air disturbance of the slurry caused by the air field generated by the nozzle 5, avoiding quality problems such as uneven baking, cracking and bubbles, and improving the quality of the electrode 2. Moreover, the nozzle 5, infrared heating component 6 and laser heating component 7 are integrated in the box 1 for drying, which improves the drying speed. While ensuring drying efficiency, the overall structure can be made more compact, reducing the length of the box 1 and improving space utilization. It solves the technical problem of existing coating ovens using hot air drying through the nozzle 5, which makes the electrode 2 easily disturbed by hot air during the drying process, resulting in surface bubbles and uneven drying of the slurry on the electrode 2.
[0072] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A coating composite drying oven, characterized in that, include: The housing (1) has an inlet (3) and an outlet (4) for the electrode (2) to pass through; An air inlet assembly is provided on at least one of the upper and lower sides inside the housing (1), including a plurality of air nozzles (5); the plurality of air nozzles (5) are spaced apart along the conveying direction of the electrode (2); A heating module is provided on at least one of the upper and lower sides inside the housing (1), including an infrared heating component (6) and a laser heating component (7); a set of the infrared heating component (6) or the laser heating component (7) is provided between two adjacent air nozzles (5); Temperature detection components are installed inside the housing (1) and are communicatively connected to the heating module and the air inlet component, for detecting the temperature inside the housing (1).
2. The coating compounding oven of claim 1, wherein, The infrared heating component (6) and the laser heating component (7) are arranged alternately along the conveying direction of the electrode (2).
3. The coating compounding oven of claim 1, wherein, Multiple sets of infrared heating components (6) and laser heating components (7) are provided, and all infrared heating components (6) are located upstream of all laser heating components (7).
4. The coating compounding oven of claim 1, wherein, The laser heating component (7) is provided in two sets, and the infrared heating component (6) is provided in multiple sets; the multiple sets of infrared heating components (6) are arranged between the two sets of laser heating components (7).
5. The coating composite drying oven according to claim 1, characterized in that, The temperature detection component includes a first temperature detection element (8) and a second temperature detection element (9); the first temperature detection element (8) is disposed inside the housing (1) and is used to detect the surface temperature of the electrode (2); the second temperature detection element (9) is disposed inside the housing (1) and is used to detect the internal temperature of the housing (1).
6. The coating compounding oven of claim 5, wherein, The temperature detection component is provided in multiple sets, and the multiple sets of temperature detection components are evenly spaced along the conveying direction of the electrode (2).
7. The coating compounding oven of claim 1, wherein, The housing (1) is provided with an exhaust port. The infrared heating component (6) and the laser heating component (7) are provided with multiple exhaust mesh holes (10) on both sides along the conveying direction of the electrode (2). The exhaust mesh holes (10) are connected to the exhaust port.
8. The coater-combi oven of claim 1, wherein, The infrared heating assembly (6) includes a mounting plate, an infrared lamp tube, and a cooling pipe; the mounting plate is disposed on the inner side wall of the housing (1), the infrared lamp tube and the cooling pipe are both disposed on the mounting plate, and the cooling pipe is used to introduce a cooling medium. And / or, the laser heating assembly (7) includes a laser and a cooling plate; the cooling plate is disposed on the inner side wall of the housing (1), the laser is disposed on the cooling plate, and the inner cavity of the cooling plate is connected to an external cooling device to circulate and provide a cooling medium; And / or, the housing (1) is provided with a differential pressure sensor (11) to detect the internal pressure of the housing (1).
9. The coating compounding oven according to any one of claims 1 to 8, characterized in that The air inlet assembly is provided on both the upper and lower sides of the housing (1), and the air nozzles (5) located on the upper and lower sides of the housing (1) are offset in the conveying direction of the electrode (2).
10. The coating compounding oven of claim 9, wherein, Heating modules are provided on both the upper and lower sides of the box (1).