Lithium battery diaphragm slurry spin coating and drying equipment
By designing a lithium battery isolation film slurry coating and drying equipment including a guide hopper, discharge pipe, heating wire and hair dryer, the problem of falling off caused by failure to effectively heat and dry the slurry, the effective recovery of the slurry and the efficient drying of the isolation film are achieved, and the battery performance and working efficiency are improved.
Patent Information
- Application Number
- CN202421084376.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-05-17
AI Technical Summary
In the prior art, the lithium battery isolation film slurry is not effectively heated and dried after spraying, resulting in drying and inner layer still wet, which in turn causes the slurry to fall off in the later stage, seriously affecting product quality.
A lithium battery isolation film slurry coating and drying equipment is designed, including a workbench, a first box and a second box. The slurry is recovered and utilized through the isolation film roller and the bottom end of the water pipe to achieve the recycling and utilization of the slurry, and the insulation film is uniformly heated and blown by the heating wire and a hair dryer in the second box to ensure the effective drying of the slurry.
Through the use of this equipment, it can effectively prevent the separation of the isolation film paste, improve the dry junction quality of the isolation film, reduce the particle diameter, improve the working efficiency, and improve the internal resistance, discharge capacity and circulation life of the battery.
Smart Images
Figure CN222842369U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lithium battery isolation film slurry spin coating and drying equipment, in particular to a lithium battery isolation film slurry spin coating and drying equipment. Background Art
[0002] The four key materials of lithium-ion batteries are positive electrode materials, negative electrode materials, electrolytes and separators. The main function of the separator is to isolate the positive and negative electrodes and prevent electrons from passing through, while allowing ions to pass through, thereby completing the rapid transmission of lithium ions between the positive and negative electrodes during the charging and discharging process. The performance of the separator directly affects the internal resistance, discharge capacity, cycle life and safety performance of the battery. The thinner the separator and the higher the porosity, the smaller the internal resistance of the battery and the better the high-rate discharge performance.
[0003] In the above technical scheme, after spraying the surface of the isolation membrane, the slurry on the sprayed lithium battery isolation membrane is not heated and dried, which causes the isolation membrane slurry on the surface of the isolation membrane to dry up while the inner layer of the isolation membrane slurry is still in a wet state, resulting in the isolation membrane slurry falling off later, seriously affecting product quality. Utility Model Content
[0004] The utility model aims at the problems of a lithium battery separator slurry spin coating and drying equipment in the prior art, and proposes the following technical solutions: a lithium battery separator slurry spin coating and drying equipment, characterized in that it comprises: a workbench, a first box body is fixedly installed on the left side of the top of the workbench, a second box body is fixedly installed on the right side of the first box body, both sides of the first box body are rotatably connected with separator rollers at the middle position, a first fixing plate is fixedly installed on one end of the top of the first box body close to the second box body, there are two first fixing plates, an annular ring is fixedly installed on the top of one side of the two first fixing plates, a water pipe is inserted in the annular ring, the two annular rings are respectively sleeved on the outer walls at both ends of the water pipe, and a plurality of nozzles are fixedly installed on the bottom end of the outer wall of the water pipe.
[0005] As a preferred embodiment of the above technical solution, a material storage barrel is fixedly installed at the other end inside the first box body, a feed pump is fixedly installed at one end of the material storage barrel inside the first box body, one end of the water pipe is connected with one side of the material storage barrel through the feed pipe, the outer wall of the feed pipe is provided with a feed pump, a material guide hopper is fixedly installed at the bottom end of the isolation membrane roller and the water pipe, a discharge pipe is fixedly installed at the bottom end of the workbench, the discharge pipe passes through the bottom end of the workbench and extends to the bottom end of the material guide hopper, an electromagnetic valve is rotatably installed inside the discharge pipe, and a control panel is fixedly installed on the outer wall of one side of the box body.
[0006] As a preferred embodiment of the above technical solution, through holes are opened on the inner walls on both sides of the second box body, and the second box body is rotatably connected with guide wheels between the insides of the through holes, and the number of guide wheels is four. Transmission rollers are rotatably installed on both sides of the inner wall of the second box body close to the through holes, and a lower transmission roller is rotatably installed at the center position inside the second box body, and an upper transmission roller is rotatably installed on the top of the lower transmission roller.
[0007] As a preferred embodiment of the above technical solution, a plurality of fixing blocks are fixedly installed at both ends of the bottom of the second box body, a wire is fixedly installed on the top of each fixing block, and a heating wire is fixedly installed between the opposite surfaces of two wires.
[0008] As a preferred embodiment of the above technical solution, air outlet pipes are fixedly installed at both ends of the top of the second box body, and a hair dryer is fixedly installed on the top section of the outer wall of the second box body, and the air outlet end of the hair dryer is connected to the top of the air outlet pipe through an air guide pipe.
[0009] As a preferred embodiment of the above technical solution, a U-shaped bracket is fixedly installed on the top of one side of the workbench close to the second box body, a second fixed plate is fixedly installed on one side of the U-shaped bracket, a motor is fixedly installed on the top of the second fixed plate, and a guide roller is fixedly installed on the output end of the motor through the U-shaped bracket, and the guide roller is rotatably connected between the top ends of the U-shaped frames.
[0010] The beneficial effects of the utility model are:
[0011] (1) A guide hopper is fixedly installed at the bottom of the isolation film roller and the water pipe, so that the isolation film surface is sprayed and the excess slurry flows into the guide hopper. A discharge pipe is fixedly installed at the bottom of the guide hopper to achieve slurry recycling. A solenoid valve is installed inside the discharge pipe to better collect the slurry sprayed on the isolation film and dripping, so that the solenoid valve is rotated to collect it when needed;
[0012] (2) By integrating the first box and the second box on the same device, the equipment footprint is greatly reduced. The heater and the air outlet pipe arranged in the second box allow the electric heating wire to heat the isolation film inside the second box while the air outlet pipe inside the box blows air to the inside of the second box through a hair dryer, thereby making the heat generated inside the second box more uniform. The slurry sprayed onto the isolation film can be heated and dried in time, thereby reducing the particle diameter and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 Shown is a stereoscopic diagram of a lithium battery separator slurry spin coating and drying device;
[0014] Figure 2 What is shown is a schematic diagram of the structure of the first box;
[0015] Figure 3 Shown is a schematic diagram of the position of the guide roller;
[0016] Figure 4 Shown is a cross-sectional view of a lithium battery separator slurry spin coating and drying device;
[0017] Figure 5 What is shown is a schematic diagram of the internal structure position of the second box;
[0018] Figure 6 The structure diagram of a lithium battery separator slurry spin coating and drying device is shown;
[0019] Figure 7 Shown is a schematic diagram of the structure of a water pipe and a sprinkler head;
[0020] Figure 8 Shown is a schematic structural diagram of the guide roller.
[0021] In the figure: 1. workbench; 2. first box body; 3. second box body; 4. isolation film roller; 5. first fixed plate; 6. annular ring; 7. water pipe; 8. nozzle; 9. storage barrel; 10. feed pump; 11. feed pipe; 12. guide hopper; 13. discharge pipe; 14. solenoid valve; 15. control panel; 16. through hole; 17. guide wheel; 18. transmission roller; 19. upper transmission roller; 20. lower transmission roller; 21. fixed block; 22. wire; 23. heating wire; 24. air outlet pipe; 25. hair dryer; 26. air guide pipe; 27. U-shaped bracket; 28. second fixed plate; 29. motor; 30. guide roller. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.
[0023] Example 1
[0024] The utility model provides a lithium battery isolation film slurry spin coating and drying device, such as Figure 1-8As shown, it includes a workbench 1, a first box body 2 is fixedly installed on one side of the top of the workbench 1, a second box body 3 is fixedly installed on one side of the first box body 2, isolation film rollers 4 are rotatably connected at the middle positions on both sides of the first box body 2, a first fixed plate 5 is fixedly installed on the top of the first box body 2 and one end close to the second box body 3, the number of the first fixed plates 5 is two, an annular ring 6 is fixedly installed on the top of one side of the two first fixed plates 5, a water pipe 7 is inserted in the annular ring 6, the two annular rings 6 are respectively sleeved on the outer walls of the two ends of the water pipe 7, and a plurality of spray nozzles are fixedly installed on the bottom end of the outer wall of the water pipe 7 Head 8, a material storage barrel 9 is fixedly installed at the other end of the first box body 2, a feed pump 10 is fixedly installed at one end of the material storage barrel 9 inside the first box body 2, one end of the water pipe 7 is connected with one side of the material storage barrel 9 through a feed pipe 11, and the outer wall of the feed pipe 11 is provided with a feed pump 10, a guide hopper 12 is fixedly installed at the bottom end of the isolation membrane roller 4 and the water pipe 7, a discharge pipe 13 is fixedly installed at the bottom end of the workbench 1, the discharge pipe 13 passes through the bottom end of the workbench 1 and extends to the bottom end of the guide hopper 12, a solenoid valve 14 is rotatably installed inside the discharge pipe 13, and a control panel 15 is fixedly installed on the outer wall of one side of the box body.
[0025] Through the storage barrel 9 fixedly installed in the first box body 2, when spraying the isolation membrane surface, start the feed pump 10, and draw the slurry from the storage barrel 9 into the water pipe 7 fixedly sleeved by the annular ring 6 through the feed pipe 11, and spray the isolation membrane surface through multiple nozzles 8 fixedly installed at the bottom of the water pipe 7. Through the feed port opened at the top of the storage material, when the slurry in the storage barrel 9 is insufficient, the slurry in the storage barrel 9 is supplemented through the feed port, and the isolation membrane roller 4 and the bottom of the water pipe 7 are fixedly installed with a guide hopper 12, so that the isolation membrane surface is sprayed. The excess slurry is made to flow into the guide hopper 12. The internal shape of the guide hopper 12 is inclined, and a discharge pipe 13 is fixedly installed at the bottom of the guide hopper 12, so as to achieve the purpose of slurry recycling. The solenoid valve 14 is rotatably installed inside the discharge pipe 13, so that the slurry dripping on the isolation membrane sprayed on can be better collected, so that the solenoid valve 14 is rotated to collect it when necessary. The isolation membrane after spraying enters the box body through the guide wheel 17 that is rotatably connected between the inside of the through hole 16 opened on the inner wall of one side of the second box body 3 close to the first box body 2.
[0026] like Figure 4-5As shown, through holes 16 are opened on the inner walls of both sides of the second box body 3, and the second box body 3 is rotatably connected with guide wheels 17 between the inner walls of the second box body 3 located inside the through holes 16, and the number of guide wheels 17 is four. Transmission rollers 18 are rotatably installed on both sides of the inner wall of the second box body 3 near the through holes 16, and a lower transmission roller 20 is rotatably installed at the center position inside the second box body 3, and an upper transmission roller 19 is rotatably installed on the top of the lower transmission roller 20. When the isolation membrane passes through the guide wheels 17 rotatably connected between the through holes 16, the isolation membrane is prevented from rubbing against its corners when passing through the through holes 16, thereby damaging the isolation membrane. When the isolation membrane passes through the transmission rollers 18 rotatably installed on both sides of the inner wall of the second box body 3 near the through holes 16, when passing through the lower transmission roller 20 and the upper transmission roller 19, the lower transmission roller 20 and the upper transmission roller 19 are made to be tightly attached to the isolation membrane, and guiding the isolation membrane has the effect of eliminating the formation of solidified particles.
[0027] like Figure 4-5 As shown, a plurality of fixed blocks 21 are fixedly installed at both ends of the bottom of the second box body 3, a wire 22 is fixedly installed at the top of the fixed block 21, a heating wire 23 is fixedly installed between the opposite surfaces of two wires 22, an air outlet pipe 24 is fixedly installed at both ends of the top of the second box body 3 and is located on both sides of the upper transmission roller 19, a hair dryer 25 is fixedly installed on the top section of the outer wall of the second box body 3, and the air outlet end of the hair dryer 25 is connected to the top of the air outlet pipe 24 through an air guide pipe 26.
[0028] The control panel 15 controls the wire 22 so that the wire 22 heats the heating wire 23, thereby causing the electric heating wire to heat the second box body 3 to increase the box body temperature. The isolation membrane is horizontally driven by the drive roller 18 and the lower drive roller 20 in the second box body 3, so that the electric heating wire heats the isolation membrane inside the second box body 3. At the same time, the hair dryer 25 at the top of the box body is started, and the air duct 26 connected to the air outlet end of the hair dryer 25 is connected to the top of the air duct 24, so that the air outlet duct 24 fixedly installed at both ends of the top of the box body blows air into the second box body 3 through the hair dryer 25, so that the heat generated in the second box body 3 is more uniform, so that the slurry sprayed on the isolation membrane can be heated and dried in time.
[0029] like Figure 1-8As shown, a U-shaped bracket 27 is fixedly installed on the top of one side of the workbench 1 close to the second box body 3, and a second fixed plate 28 is fixedly installed on one side of the U-shaped bracket 27, and a motor 29 is fixedly installed on the top of the second fixed plate 28, and the output end of the motor 29 passes through the U-shaped bracket 27 and a guide roller 30 is fixedly installed thereon, and the guide roller 30 is rotatably connected between the top ends of the U-shaped brackets. By placing the isolation film on the guide roller 30 rotatably installed on the top end of the U-shaped bracket 27 fixedly installed on the top end of the workbench 1 close to the second box body 3, after the isolation film is placed, by starting the motor 29, the output end of the motor 29 passes through the guide roller 30 fixedly installed on the U-shaped bracket 27 to rotate, thereby horizontally transmitting the isolation film, and after the isolation film is dried, the isolation film continues to be transmitted forward through the guide roller 30, so that the dried isolation film can perform subsequent work, thereby improving work efficiency.
[0030] Working principle: When using the workbench 1, the staff will pass one end of the isolation film on the isolation film roller 4 that is rotatably connected at the middle position on both sides of the first box body 2 through the through holes 16 opened on the inner walls of both sides of the second box body 3, so that the isolation film is placed on the guide roller 30 that is rotatably installed on the top of the U-shaped bracket 27 fixedly installed on the top of the workbench 1 close to the second box body 3. After the isolation film is placed, the motor 29 is started to make the output end of the motor 29 pass through the guide roller 30 fixedly installed on the U-shaped bracket 27 to rotate, thereby horizontally transmitting the isolation film. When the isolation film passes through the guide wheel 17 that is rotatably connected between the through holes 16, it is prevented that the isolation film rubs against its water chestnut when passing through the through holes 16, causing damage to the isolation film. The isolation film passes through the second box body 3. When the drive rollers 18 are rotated and installed on both sides of the wall close to the through hole 16, when passing through the lower drive roller 20 and the upper drive roller 19, the lower drive roller 20 and the upper drive roller 19 are made to be close to the isolation membrane, guiding the isolation membrane to eliminate the formation of solidified particles, through the storage barrel 9 fixedly installed in the first box body 2, when spraying the isolation membrane surface, start the feed pump 10, and draw the slurry from the storage barrel 9 into the water pipe 7 fixedly sleeved by the annular ring 6 through the feed pipe 11, and spray the isolation membrane surface through multiple nozzles 8 fixedly installed at the bottom of the water pipe 7, and through the feed port opened at the top of the storage material, when the slurry in the storage barrel 9 is insufficient, the slurry in the storage barrel 9 is supplemented through the feed port, and the isolation membrane roller 4 and the bottom end of the water pipe 7 are fixedly installed with a guide The hopper 12 is used to spray the surface of the isolation membrane, so that the excess slurry flows into the guide hopper 12. The internal shape of the guide hopper 12 is inclined, and a discharge pipe 13 is fixedly installed at the bottom of the guide hopper 12, so as to achieve the purpose of slurry recycling. The electromagnetic valve 14 is installed by rotating inside the discharge pipe 13, so that the slurry dripping on the isolation membrane can be better collected, so that the electromagnetic valve 14 is rotated when necessary to collect it. When the isolation membrane after spraying enters the box body through the guide wheel 17 that is rotatably connected between the inside of the through hole 16 opened on the inner wall of one side of the second box body 3 close to the first box body 2, the control panel 15 controls the wire 22 to heat the heating wire 23, so that the electric heating wire heats the second box body 3. The temperature of the box body is increased, and the isolation membrane is horizontally driven and moved in the second box body 3 by the drive roller 18 and the lower drive roller 20, so that the electric heating wire heats the isolation membrane inside the second box body 3, and at the same time, the hair dryer 25 on the top of the box body is started, and the air duct 26 is connected to the air outlet end of the hair dryer 25, so that the air duct 26 is connected to the top of the air outlet duct 24, so that the air outlet duct 24 fixedly installed at both ends of the top of the box body blows air into the second box body 3 through the hair dryer 25, so that the heat generated in the second box body 3 is more uniform, and the slurry sprayed on the isolation membrane can be heated and dried in time. After drying, the isolation membrane continues to move forward through the guide roller 30, so that the dried isolation membrane can perform subsequent work, thereby improving work efficiency.
[0031] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.
Claims
1. A lithium battery separator slurry spin coating and drying device, characterized in that: include: A workbench (1), wherein a first box body (2) is fixedly installed on the left side of the top of the workbench (1), a second box body (3) is fixedly installed on the right side of the first box body (2), isolation film rollers (4) are rotatably connected at the middle positions on both sides of the first box body (2), a first fixed plate (5) is fixedly installed at one end of the top of the first box body (2) close to the second box body (3), the number of the first fixed plates (5) is two, an annular ring (6) is fixedly installed on the top of one side of the two first fixed plates (5), a water pipe (7) is inserted inside the annular ring (6), the two annular rings (6) are respectively sleeved on the outer walls of the two ends of the water pipe (7), and a plurality of nozzles (8) are fixedly installed at the bottom end of the outer wall of the water pipe (7).
2. The lithium battery separator slurry spin coating and drying equipment according to claim 1, characterized in that: A material storage barrel (9) is fixedly installed at the other end of the first box body (2), a feed pump (10) is fixedly installed at one end of the material storage barrel (9) inside the first box body (2), one end of the water pipe (7) is connected to one side of the material storage barrel (9) through a feed pipe (11), and the outer wall of the feed pipe (11) is provided with a feed pump (10), a guide hopper (12) is fixedly installed at the bottom end of the isolation membrane roller (4) and the water pipe (7), a discharge pipe (13) is fixedly installed at the bottom end of the workbench (1), the discharge pipe (13) passes through the bottom end of the workbench (1) and extends to the bottom end of the guide hopper (12), a solenoid valve (14) is rotatably installed inside the discharge pipe (13), and a control panel (15) is fixedly installed on the outer wall of one side of the first box body (2).
3. The lithium battery separator slurry spin coating and drying equipment according to claim 1, characterized in that: Through holes (16) are provided on the inner walls on both sides of the second box body (3); the second box body (3) is rotatably connected with guide wheels (17) inside the through holes (16); the number of guide wheels (17) is four; transmission rollers (18) are rotatably installed on both sides of the inner wall of the second box body (3) close to the through holes (16); a lower transmission roller (20) is rotatably installed at the center position inside the second box body (3); an upper transmission roller (19) is rotatably installed on the top of the lower transmission roller (20).
4. The lithium battery separator slurry spin coating and drying equipment according to claim 1, characterized in that: A plurality of fixing blocks (21) are fixedly mounted at both ends of the bottom of the second box body (3), a wire (22) is fixedly mounted on the top of each fixing block (21), and a heating wire (23) is fixedly mounted between opposite surfaces of two wires (22).
5. The lithium battery separator slurry spin coating and drying equipment according to claim 1, characterized in that: Air outlet pipes (24) are fixedly mounted at both ends of the top of the interior of the second box body (3), and a hair dryer (25) is fixedly mounted on the top section of the outer wall of the second box body (3), and the air outlet end of the hair dryer (25) is connected to the top end of the air outlet pipe (24) via an air guide pipe (26).
6. The lithium battery separator slurry spin coating and drying equipment according to claim 1, characterized in that: A U-shaped bracket (27) is fixedly installed on the top of one side of the workbench (1) close to the second box body (3); a second fixed plate (28) is fixedly installed on one side of the U-shaped bracket (27); a motor (29) is fixedly installed on the top of the second fixed plate (28); an output end of the motor (29) passes through the U-shaped bracket (27) and is fixedly installed with a guide roller (30); the guide roller (30) is rotatably connected between the top ends of the U-shaped bracket (27).