Ceramic edge laser drying oven

Abstract

The utility model discloses a kind of ceramic edge laser drying oven, pole piece is transported to drying channel from input, laser emits laser perpendicular to pole piece, laser is dried to pole piece by transparent panel, by the power of control laser, can control subarea only to pole piece ceramic edge drying, pole piece is output from output after laser drying and enters drying oven main body by film inlet, to carry out secondary air drying.Drying assembly is arranged at the outside of drying oven, is not affected by the wind temperature in drying oven, is conducive to the stable operation of laser, and drying assembly is easy to install, it is convenient to transform to conventional drying oven.

Description

Technical Field

[0001] This utility model relates to the field of electrode drying, specifically to a ceramic edge laser drying oven. Background Technology

[0002] In existing lithium-ion battery manufacturing technologies, electrodes are often made by laser cutting. During the cutting process, burrs are easily generated, which can easily puncture or tear the separator during the winding and assembly process, greatly increasing the defect rate of the assembly process. Existing technologies often solve this problem by coating one edge of the electrode with a ceramic edge coating.

[0003] To avoid mutual dissolution between the ceramic edge and the electrode surface slurry, and to mitigate the difference in drying temperatures between the two, laser drying is often used for electrodes with ceramic edge coatings. Laser drying, due to its zoned drying characteristics, allows for the application of different drying powers to the ceramic edge and the electrode surface slurry, accelerating ceramic curing and reducing mutual dissolution. In existing technologies, conventional ovens are modified by adding laser drying devices within the oven's insulated passages. This involves alternating multiple air-drying devices and the laser drying device to achieve rapid electrode drying. However, modifying the internal structure of existing ovens is difficult, making it hard to guarantee temperature stability within the insulated passages. If the air temperature becomes too high, causing excessively high temperatures within the insulated passages, the internal laser drying device is prone to shutting down. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a ceramic edge laser drying oven, which can solve the problem of unstable operation of existing laser drying ovens modified from conventional ovens.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: On the one hand, a ceramic edge laser drying oven is provided, including an oven body and a drying component. The oven body is provided with a film inlet. The drying component includes a mounting frame and several lasers. The mounting frame is provided with a drying channel. The two ends of the drying channel are an input port and an output port, respectively. The mounting frame is mounted on the oven body, and the output port faces the film inlet. A transparent panel is provided on one side of the mounting frame. The lasers are slidably mounted on the side of the mounting frame where the transparent panel is provided. The lasers are used to emit a beam of light toward the transparent panel, and the beam of the lasers is perpendicular to the arrangement direction of the input port and the output port.

[0006] As a further improvement to the above technical solution, the mounting bracket is provided with a guide bar having a guide groove, the length direction of which is the same as the width direction of the electrode in the drying channel; a plurality of lasers are slidably connected in the guide groove by a slider, and the plurality of lasers are arranged along the length direction of the guide groove.

[0007] As a further improvement to the above technical solution, a pressure plate is provided in the guide groove, the slider is located above the pressure plate, and a set screw is provided on the guide bar to press the pressure plate onto the slider.

[0008] As a further improvement to the above technical solution, two guide bars are provided, and the arrangement direction of the two guide bars is the same as the arrangement direction of the input port and the output port; the slider is long and its length is greater than the distance between the two guide bars.

[0009] As a further improvement to the above technical solution, each laser is connected to two sliders, the two sliders are arranged along the length of the guide groove, and the laser beam is located between the two sliders.

[0010] As a further improvement to the above technical solution, the mounting frame is also provided with an exhaust pipe that communicates with the drying channel, and the length direction of the exhaust pipe is parallel to the beam of the laser.

[0011] As a further improvement to the above technical solution, the transparent panel includes two opposite glass panels with a gap between them, and the edges of both glass panels are sealed to the mounting bracket.

[0012] As a further improvement to the above technical solution, the mounting bracket is provided with a first connecting plate, and the inner wall of the first connecting plate is connected to a second connecting plate with a U-shaped cross-section and a third connecting plate with an L-shaped cross-section. The first connecting plate is bent inward to form a bent portion, a first connecting groove is formed between the second connecting plate and the bent portion, and a second connecting groove is formed between the third connecting plate and the second connecting plate. The edges of the two glass panels are respectively sealed and connected in the first connecting groove and the second connecting groove.

[0013] As a further improvement to the above technical solution, sealing strips are provided in both the first connecting groove and the second connecting groove, and the edge of the glass panel is interference-fitted with the sealing strip.

[0014] As a further improvement to the above technical solution, the cross-sectional area of ​​the output port is larger than the cross-sectional area of ​​the inlet port, and the projection of the inlet port is located at the exact center of the output port.

[0015] The beneficial effects of this invention are as follows: The electrode sheet is conveyed from the input port into the drying channel. The laser emits a laser beam perpendicular to the electrode sheet, which dries the electrode sheet through a transparent panel. By controlling the power of the laser, the drying can be controlled to be applied only to the ceramic edge of the electrode sheet in designated areas. After laser drying, the electrode sheet is output from the output port and enters the main body of the oven through the inlet for secondary air drying. The drying assembly is located on the outside of the oven, unaffected by the internal air temperature, which is beneficial for the stable operation of the laser. Furthermore, the drying assembly is easy to install and facilitates the modification of conventional ovens. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the ceramic edge laser drying oven provided in a preferred embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the drying component provided in a preferred embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the drying assembly provided in a preferred embodiment of the present invention;

[0020] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0021] Attached reference numerals: 1. Mounting bracket; 2. Laser; 3. Oven body.

[0022] 11. Drying channel; 12. Exhaust duct; 13. Transparent panel; 14. Guide strip; 15. First connecting plate; 16. Second connecting plate; 17. Third connecting plate; 21. Beam; 31. Membrane inlet.

[0023] 111. Input port, 112. Output port, 131. Glass panel, 141. Guide groove, 142. Slider, 143. Pressure plate, 151. Bending part, 152. First connecting groove, 153. Second connecting groove, 154. Sealing strip. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1 This utility model provides a preferred embodiment of a ceramic edge laser drying oven, including an oven body 3 and a drying assembly. The oven body 3 is provided with a film inlet 31. The drying assembly includes a mounting frame 1 and several lasers 2. The mounting frame 1 is provided with a drying channel 11 and an exhaust pipe 12 connected to the drying channel 11. The two ends of the drying channel 11 are an input port 111 and an output port 112, respectively. The mounting frame 1 is installed on the oven body 3, and the output port 112 faces the film inlet 31. The electrode is transported from the input port 111 into the drying channel 11. The lasers 2 are used to emit a beam 21. Local drying can be achieved by adjusting the power and the spot size. At the same time, the evaporated water vapor and NMP and other gases are discharged from the exhaust pipe 12. After being laser dried, the electrode is output from the output port 112 and enters the oven through the film inlet 31 for secondary air drying.

[0026] For details, please see Figure 1-3 A transparent panel 13 is provided on one side of the mounting bracket 1. A laser 2 is slidably mounted on the side of the mounting bracket 1 with the transparent panel 13. The laser 2 emits a laser beam 21 towards the transparent panel 13, and the laser beam 21 is perpendicular to the arrangement direction of the input port 111 and the output port 112. The length direction of the exhaust pipe 12 is parallel to the laser beam 21. The laser 2 emits a laser beam perpendicular to the electrode, and the beam 21 passes through the transparent panel 13 to transfer heat to the electrode. By controlling the power of the laser 2, the drying efficiency of the ceramic edge of the electrode can be controlled.

[0027] Please see Figure 2 , 4Mounting bracket 1 is provided with guide strip 14 having guide groove 141. The length direction of guide groove 141 is the same as the width direction of the electrode in drying channel 11. Several lasers 2 are slidably connected in guide groove 141 by slider 142. Several lasers 2 are arranged along the length direction of guide groove 141. The position of laser 2 can be freely adjusted by sliding slider 142 to achieve precise control of electrode drying position.

[0028] Please see Figure 4 In this embodiment, a pressure plate 143 is provided in the guide groove 141, and a slider 142 is located above the pressure plate 143. A set screw (not shown in the figure) is provided on the guide bar 14 to press the pressure plate 143 onto the slider 142. The slider 142 is fixed on the pressure plate 143 to prevent the slider 142 from moving the laser 2 during the drying process of the electrode, and to avoid the beam 21 emitted by the laser 2 from being misaligned with the ceramic edge of the electrode.

[0029] There are two guide bars 14, and the arrangement direction of the two guide bars 14 is the same as the arrangement direction of the input port 111 and the output port 112. The slider 142 is long and its length is greater than the distance between the two guide bars 14. The two guide bars 14 can be stably supported at both ends of the slider 142, which can prevent the slider 142 from derailing due to off-center load or vibration.

[0030] Each laser 2 is connected to two sliders 142, which are arranged along the length of the guide groove 141. The laser beam 21 of the laser 2 is located between the two sliders 142. Each slider 142 bears less force, which helps to distribute the load. The wear rate of a single slider 142 is reduced, thus extending the overall lifespan.

[0031] The transparent panel 13 includes two opposing glass panels 131 spaced apart, employing a double-layer design to provide heat insulation and prevent the surface temperature of the transparent panel 13 near the electrode from becoming too high, which could easily cause the NMP gas volatilized on the electrode surface to explode. Furthermore, the edges of both glass panels 131 are sealed to the mounting bracket 1, and the glass panels 131 isolate the drying channel 11 from the laser 2, preventing the NMP gas volatilized on the electrode surface from contacting the laser 2.

[0032] Specifically, the mounting bracket 1 is provided with a first connecting plate 15. The inner wall of the first connecting plate 15 is connected to a second connecting plate 16 with a U-shaped cross-section and a third connecting plate 17 with an L-shaped cross-section. The first connecting plate 15 is bent inward to form a bent portion 151. A first connecting groove 152 is formed between the second connecting plate 16 and the bent portion 151. A second connecting groove 153 is formed between the third connecting plate 17 and the second connecting plate 16. The edges of the two glass panels 131 are respectively sealed and connected in the first connecting groove 152 and the second connecting groove 153. The first connecting groove 152 and the second connecting groove 153 facilitate the fixed installation of the glass panels 131. A sealing strip 154 ​​is provided in both the first connecting groove 152 and the second connecting groove 153. The edge of the glass panel 131 is interference-fitted with the sealing strip 154. The sealing strip 154 ​​ensures both sealing performance and prevents the glass panel 131 from sliding.

[0033] In this embodiment, the cross-sectional area of ​​the output port 112 is larger than that of the inlet port 31, and the projection of the inlet port 31 is located in the center of the output port 112. The larger output port 112 facilitates docking with the transfer roller, so that the electrode can enter the drying channel 11. The centrally located inlet port 31 facilitates docking with the electrode located in the middle of the transfer roller.

[0034] 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 ceramic edge laser drying oven, characterized in that: The device includes an oven body and a drying assembly. The oven body has a film inlet. The drying assembly includes a mounting frame and several lasers. The mounting frame has a drying channel with an input port and an output port at each end. The mounting frame is mounted on the oven body, and the output port faces the film inlet. A transparent panel is provided on one side of the mounting frame. The lasers are slidably mounted on the side of the mounting frame with the transparent panel. The lasers emit a beam of light toward the transparent panel, and the beam of the lasers is perpendicular to the arrangement direction of the input port and the output port.

2. The ceramic edge laser drying oven according to claim 1, characterized in that: The mounting bracket is provided with a guide bar having a guide groove, the length direction of which is the same as the width direction of the electrode in the drying channel; a plurality of lasers are slidably connected in the guide groove by a slider, and the plurality of lasers are arranged along the length direction of the guide groove.

3. The ceramic edge laser drying oven according to claim 2, characterized in that: A pressure plate is provided inside the guide groove, the slider is located above the pressure plate, and a set screw is provided on the guide bar to press the pressure plate onto the slider.

4. The ceramic edge laser drying oven according to claim 2, characterized in that: Two guide bars are provided, and the arrangement direction of the two guide bars is the same as the arrangement direction of the input port and the output port; the slider is long and its length is greater than the distance between the two guide bars.

5. The ceramic edge laser drying oven according to claim 2, characterized in that: Each laser is connected to two sliders, which are arranged along the length of the guide groove, and the laser beam is located between the two sliders.

6. The ceramic edge laser drying oven according to claim 1, characterized in that: The mounting bracket is also equipped with an exhaust pipe that communicates with the drying channel, and the length direction of the exhaust pipe is parallel to the laser beam.

7. The ceramic edge laser drying oven according to claim 1, characterized in that: The transparent panel includes two opposing glass panels spaced apart, and the edges of both glass panels are sealed to the mounting bracket.

8. The ceramic edge laser drying oven according to claim 7, characterized in that: The mounting bracket is provided with a first connecting plate. The inner wall of the first connecting plate is connected to a second connecting plate with a U-shaped cross-section and a third connecting plate with an L-shaped cross-section. The first connecting plate is bent inward to form a bent portion. A first connecting groove is formed between the second connecting plate and the bent portion. A second connecting groove is formed between the third connecting plate and the second connecting plate. The edges of the two glass panels are respectively sealed and connected in the first connecting groove and the second connecting groove.

9. The ceramic edge laser drying oven according to claim 8, characterized in that: Both the first connecting groove and the second connecting groove are provided with sealing strips, and the edge of the glass panel is interference-fitted with the sealing strips.

10. The drying oven according to any one of claims 1-9, characterized in that: The cross-sectional area of ​​the output port is larger than that of the inlet port, and the projection of the inlet port is located at the exact center of the output port.

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