Buckle type electrode plate coating and heating device
By designing a buckle electrode sheet coating device with adjustable scraper and heating suction assembly, the coating thickness adjustment and uniformity problems are solved, and the test consistency and stability of the electrode sheet are improved.
Patent Information
- Application Number
- CN202421662851.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In the prior art, the thickness cannot be adjusted during the coating process, resulting in uneven distribution of the coating and the slurry is prone to flow during the transfer process, affecting the consistency and stability of the electric scavenging test of the electrode sheet.
A buckle electrode sheet coating device including an adjustable scraper and a heating suction assembly is designed to adjust the coating thickness through an adjustable scraper, and ensure the uniformity of the coating by a heating suction assembly, fixing the surroundings of the pole sheet to prevent lifting.
Flexible adjustment of coatings of different thicknesses is achieved, ensuring coating uniformity and improving the consistency and stability of the electric buckle test of the electrode sheet.
Smart Images
Figure CN223145169U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, and particularly relates to a coating heating device for button electrode sheets. Background Art
[0002] The current popular button cell test process in the industry is homogenization, coating, drying, cold pressing, punching, button cell assembly and button cell testing; among them, during the coating process, a four-sided preparation device is generally used for coating, which can only use a fixed thickness and cannot adjust the coating thickness; after the coating process is completed, it is necessary to immediately wipe off the residual slurry on the coater, which is time-consuming and laborious, and the efficiency is low during continuous coating. After coating, it is necessary to use a tool made of cardboard or other materials to transfer the electrode sheet to a blast drying oven or a vacuum drying oven. During the transfer process, the slurry on the foil is very likely to flow, resulting in uneven distribution of the slurry coating; at the same time, the drying speed of the electrode sheet is slow, and the stress received between the foil and the slurry is different, which will cause the four corners of the electrode sheet to warp, causing the slurry to flow towards the middle low place, resulting in a thick coating in the middle and a thin coating around the electrode sheet, resulting in poor consistency and stability in button cell testing. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a coating heating device for button electrode sheets to solve the above-mentioned defects in the prior art.
[0004] To achieve the above purpose, the utility model provides the following technical scheme: A coating heating device for button electrode sheets, including a backing plate, a bottom plate, a transverse moving scraper assembly and a longitudinal moving scraper assembly. An installation frame is provided on the backing plate, the bottom plate is fixedly installed on the backing plate, a transverse moving scraper assembly is provided on the side of the backing plate, the transverse moving scraper assembly includes an adjustable scraper, and the scraper is used for coating slurry on the electrode sheet. The four corners of the longitudinal moving scraper assembly are fixedly and slidably installed on the installation frame. The longitudinal moving scraper assembly includes a guiding plate and a magnetic attraction plate, and the magnetic attraction plate is used for grasping the adjustable scraper by magnetic force. A heating and suction assembly is provided on the top of the installation frame, and the heating and suction assembly is used for heating the coated slurry and sucking out waste gas.
[0005] Preferably, pole piece fixing plates are provided on both sides of the bottom plate, the pole piece fixing plates are detachably installed on the bottom plate through bolts, and a slurry collection box is provided on the side of the bottom plate.
[0006] Preferably, the transverse moving scraper assembly further includes a transverse moving slide rail, an electric push rod, a magnetic attraction head and a scraper holder. The transverse moving slide rail is fixedly installed on the side of the bottom plate, the electric push rod is fixedly installed on the transverse moving slide rail and can be driven to move by the transverse moving slide rail. The output shaft of the electric push rod is connected to the bottom of the magnetic attraction head, the scraper holder is fixedly installed on the side of the magnetic attraction head, and both ends of the adjustable scraper are movably installed on the scraper holder through friction.
[0007] Preferably, the longitudinal moving scraper assembly further includes a longitudinal moving slide rail and a guide rod. The longitudinal moving slide rail and the guide rod are respectively fixedly installed at both ends of the guide plate. A guiding interval is provided inside the guide plate. Both ends of the magnetic attraction plate are respectively installed on the longitudinal moving slide rail and the guide rod.
[0008] Preferably, both ends of the guide plate are connected to the mounting frame through electric push rods.
[0009] Preferably, the heating and suction assembly includes a heating cover, a heating resistor, a suction cover, and an exhaust pipe. The heating cover is fixedly installed on the mounting frame. The heating resistor is installed inside the heating cover. The suction cover is fixedly installed on the heating cover. The exhaust pipe is installed on the suction cover.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0011] 1. The adjustable scraper provided in the present utility model can be adjusted according to the coating thickness required by the experiment, meeting the coating needs of slurries with different thicknesses;
[0012] 2. The pole piece fixing plate provided in the present utility model can fix the periphery of the pole piece, ensuring that the pole piece will not warp around during the heating process, resulting in uneven coating thickness distribution. Description of the Drawings
[0013] Figure 1 is a schematic structural diagram of the present utility model;
[0014] Figure 2 is a schematic structural diagram of the present utility model;
[0015] Figure 3 is Figure 2 an enlarged view of the structure at A inside;
[0016] Figure 4 is Figure 2 an enlarged view of the structure at B inside;
[0017] Figure 5 is a schematic structural diagram of the bottom of the longitudinal moving scraper assembly;
[0018] Figure 6 is a schematic structural diagram of the longitudinal moving scraper assembly;
[0019] Figure 7 is a schematic structural diagram of the heating and suction assembly.
[0020] Wherein: 1 - backing plate;
[0021] 2 - bottom plate; 21 - pole piece fixing plate; 22 - slurry collection box;
[0022] 3 - Transverse scraping blade assembly; 31 - Adjustable scraping blade; 32 - Transverse sliding rail; 33 - Electric push rod; 34 - Magnetic suction head;
[0023] 35 - Scraping blade holder;
[0024] 4 - Longitudinal scraping blade assembly; 41 - Guide plate; 42 - Magnetic suction plate; 43 - Longitudinal sliding rail; 44 - Guide rod; 45 - Electric push rod;
[0025] 5 - Mounting frame;
[0026] 6 - Heating and suction component; 61 - Heating cover; 62 - Heating resistor; 63 - Suction cover; 64 - Exhaust pipe. Detailed implementation manner
[0027] To make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.
[0028] Please refer to Figures 1 to 7 , the present invention provides a technical solution: including a backing plate 1, a bottom plate 2, a transverse scraping blade assembly 3 and a longitudinal scraping blade assembly 4. An installation frame 5 is provided on the backing plate 1. The bottom plate 2 is fixedly installed on the backing plate 1. The transverse scraping blade assembly 3 is provided on the side of the backing plate 1. The transverse scraping blade assembly 3 includes an adjustable scraping blade 31, and the adjustable scraping blade 31 is used for coating slurry on the pole piece. The four corners of the longitudinal scraping blade assembly 4 are fixedly and slidably installed on the installation frame 5. The longitudinal scraping blade assembly 4 includes a guide plate 41 and a magnetic suction plate 42. The magnetic suction plate 42 is used to grab the adjustable scraping blade 31 by magnetic force. A heating and suction component 6 is provided on the top of the installation frame 5. The heating and suction component 6 is used to heat the coated slurry and suction exhaust gas. By setting the transverse scraping blade assembly 3 to drive the adjustable scraping blade 31 to move horizontally, the horizontal position of the adjustable scraping blade 31 on the bottom plate 2 is adjusted. By the longitudinal scraping blade assembly 4 driving the adjustable scraping blade 31 to move longitudinally on the bottom plate 2, the pole piece placed on the bottom plate 2 is coated with slurry.
[0029] In this embodiment, pole piece fixing plates 21 are provided on both sides of the bottom plate 2. The pole piece fixing plates 21 are detachably installed on the bottom plate 2 by bolts. A slurry collection box 22 is provided on the side of the bottom plate 2. The slurry collection box 22 is arranged at the end of the longitudinal movement of the adjustable scraping blade 31 and can collect excess slurry. The pole piece fixing plate 21 is made of polytetrafluoroethylene material and can withstand high temperatures. Its function is to fix the four sides of the pole piece to ensure that the pole piece will not warp around during the heating process, resulting in uneven coating thickness distribution.
[0030] In this embodiment, the transverse scraping blade assembly 3 further includes a transverse sliding rail 32, an electric push rod 33, a magnetic suction head 34 and a scraping blade holder 35. The transverse sliding rail 32 is fixedly installed on the side of the bottom plate 2. The electric push rod 33 is fixedly installed on the transverse sliding rail 32 and can be driven to move by the transverse sliding rail 32. The output shaft of the electric push rod 33 is connected to the bottom of the magnetic suction head 34. The scraping blade holder 35 is fixedly installed on the side of the magnetic suction head 34. Both ends of the adjustable scraping blade 31 are movably installed on the scraping blade holder 35 by means of friction. The longitudinal scraping blade assembly 4 further includes a longitudinal sliding rail 43 and a guide rod 44. The longitudinal sliding rail 43 and the guide rod 44 are respectively fixedly installed at both ends of the guide plate 41. A guide interval is provided inside the guide plate 41. Both ends of the magnetic suction plate 42 are respectively installed on the longitudinal sliding rail 43 and the guide rod 44. When coating is required, the position of the adjustable scraping blade 31 is adjusted horizontally through the transverse sliding rail 32, and then the electric push rod 33 pushes the magnetic suction head 34 and the adjustable scraping blade 31 to move onto the magnetic suction plate 42. The magnetic suction head 34 and the magnetic suction plate 42 are attracted to each other. Then, the output shaft of the electric push rod 33 descends and disengages from the magnetic suction head 34. The magnetic suction plate 42 drives the adjustable scraping blade 31 to move longitudinally to coat the electrode sheet, and then resets. The output shaft of the electric push rod 33 is inserted into the magnetic suction head 34 again. The electromagnet in the magnetic suction plate 42 is powered off and loses magnetism. Under the action of gravity, the magnetic suction head 34 is removed from the magnetic suction plate 42 by the electric push rod 33 and waits to re-determine the position for the next coating.
[0031] In this embodiment, both ends of the guide plate 41 are connected to the mounting bracket 5 through hydraulic rods 45. The vertical position of the magnetic suction plate 42 is adjusted through the hydraulic rods 45, so as to adjust the height between the adjustable scraping blade 31 and the electrode sheet to meet the coating requirements of slurries with different thicknesses.
[0032] In this embodiment, the heating and suction component includes a heating cover 61, a heating resistor 62, a suction cover 63 and an exhaust pipe 64. The heating cover 61 is fixedly installed on the mounting bracket 5. The heating resistor 62 is installed inside the heating cover 61. The suction cover 63 is fixedly installed on the heating cover 61. The exhaust pipe 64 is installed on the suction cover 63. The function of the heating resistor 62 is to provide the heating temperature; the suction cover 63 is located above the heating resistor 62 for the purpose of extracting the moisture or other organic solvent gases heated from the electrode sheet; the function of the exhaust port 64 is to discharge the extracted moisture or other organic solvent gases to improve the safety of the operators.
[0033] The working principle is as follows: When in use, first fix the head and tail ends of the pole piece on the bottom plate 2 through the pole piece fixing plate 21, then horizontally adjust the position of the adjustable scraper 31 through the transverse sliding rail 32, and then push the magnetic suction head 34 and the adjustable scraper 31 to move onto the magnetic suction plate 42 through the electric push rod 33. The magnetic suction head 34 and the magnetic suction plate 42 are attracted to each other. Then, the output shaft of the electric push rod 33 descends and disengages from the magnetic suction head 34. The magnetic suction plate 42 drives the adjustable scraper 31 to move longitudinally to coat the pole piece. Then, it resets. The output shaft of the electric push rod 33 is inserted back into the magnetic suction head 34. The electromagnet in the magnetic suction plate 42 is powered off and loses magnetism. Under the action of gravity, the magnetic suction head 34 is removed from the magnetic suction plate 42 by the electric push rod 33 and waits to re-determine the position for the next coating. During the coating process, the heating resistor 62 works to heat the coating position; the suction hood 63 extracts the moisture or other organic solvent gases heated from the pole piece; the exhaust pipe 64 connected to the external suction device discharges the extracted moisture or other organic solvent gases to improve the safety of the operators.
[0034] Comparative Example 1:
[0035] 1. Select graphite raw materials and mix them in the ratio of graphite: conductive carbon: sodium carboxymethyl cellulose: styrene butadiene rubber = 95:1.5:1.5:2. Use a four-sided preparation device with a thickness of 400 μm to scrape and coat on the glass panel;
[0036] 2. Use cardboard to transfer the coated pole piece to a vacuum drying oven at 110 °C;
[0037] 3. After the pole piece is dried, use a tablet press to press the four sides and the middle area of the pole piece respectively to compare the weight differences of the pole pieces.
[0038] Example 1:
[0039] 1. Select graphite raw materials and mix them in the ratio of graphite: conductive carbon: sodium carboxymethyl cellulose: styrene butadiene rubber = 95:1.5:1.5:2. Adjust the scraper thickness knob to 400 μm, use a fixator to fix the four sides of the pole piece, and then press the switch to perform scraping and coating;
[0040] 2. Move the heating device to completely cover the pole piece with the heating hood and start the heating controller;
[0041] 3. After the pole piece is dried, use a tablet press to press the four sides and the middle area of the pole piece respectively to compare the weight differences of the pole pieces.
[0042] Compare the consistency after coating and drying between the comparative example and the example:
[0043]
[0044] Based on the above, the adjustable squeegee provided in the present utility model can be adjusted according to the coating thickness required by experiments, meeting the requirements of slurry coating with different thicknesses; the pole piece fixing plate provided in the present utility model can fix the four sides of the pole piece, ensuring that the pole piece will not warp around during the heating process, resulting in uneven coating thickness distribution.
[0045] As is known by technical common sense, the present utility model can be implemented by other embodiments without departing from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present utility model or within the scope equivalent to the present utility model are encompassed by the present utility model.
Claims
1. A button-type electrode sheet coating and heating device, characterized in that: It includes a backing plate (1), a bottom plate (2), a transverse moving scraper assembly (3) and a longitudinal moving scraper assembly (4). An installation frame (5) is provided on the backing plate (1). The bottom plate (2) is fixedly installed on the backing plate (1). The transverse moving scraper assembly (3) is provided on the side of the backing plate (1). The transverse moving scraper assembly (3) includes an adjustable scraper (31), and the adjustable scraper (31) is used for coating slurry on the electrode sheet. The four corners of the longitudinal moving scraper assembly (4) are fixedly and slidably installed on the installation frame (5). The longitudinal moving scraper assembly (4) includes a guide plate (41) and a magnetic suction plate (42), and the magnetic suction plate (42) is used for grasping the adjustable scraper (31) by magnetic force. A heating and suction assembly (6) is provided on the top of the installation frame (5), and the heating and suction assembly (6) is used for heating the coated slurry and sucking exhaust gas.
2. The coating heating device for a button electrode sheet according to claim 1, characterized in that: Pole piece fixing plates (21) are provided on both sides of the bottom plate (2), and the pole piece fixing plates (21) are detachably installed on the bottom plate (2) by bolts. A slurry collection box (22) is provided on the side of the bottom plate (2).
3. A button electrode sheet coating and heating device according to claim 1, characterized in that: The transverse moving scraper assembly (3) further includes a transverse moving slide rail (32), an electric push rod (33), a magnetic suction head (34) and a scraper frame (35). The transverse moving slide rail (32) is fixedly installed on the side of the bottom plate (2). The electric push rod (33) is fixedly installed on the transverse moving slide rail (32) and can be driven to move by the transverse moving slide rail (32). The output shaft of the electric push rod (33) is connected to the bottom of the magnetic suction head (34). The scraper frame (35) is fixedly installed on the side of the magnetic suction head (34). The two ends of the adjustable scraper (31) are movably installed on the scraper frame (35) by friction.
4. The coating and heating device for button electrode sheets according to claim 1, wherein: The longitudinal moving scraper assembly (4) further includes a longitudinal moving slide rail (43) and a guide rod (44). The longitudinal moving slide rail (43) and the guide rod (44) are respectively fixedly installed at both ends of the guide plate (41). A guide interval is provided inside the guide plate (41). The two ends of the magnetic suction plate (42) are respectively installed on the longitudinal moving slide rail (43) and the guide rod (44).
5. The coating and heating device for button electrode sheets according to claim 4, characterized in that: Both ends of the guide plate (41) are connected to the installation frame (5) by hydraulic rods (45).
6. The coating and heating device for a button electrode sheet according to claim 1, wherein: The heating and suction assembly includes a heating cover (61), a heating resistor (62), a suction cover (63) and an exhaust pipe (64). The heating cover (61) is fixedly installed on the installation frame (5). The heating resistor (62) is installed inside the heating cover (61). The suction cover (63) is fixedly installed on the heating cover (61). The exhaust pipe (64) is installed on the suction cover (63).