Preparation device and preparation method of lithium iron phosphate battery positive electrode slurry

Abstract

The invention relates to the technical field of preparation of lithium iron phosphate battery positive electrode slurry, and discloses a preparation device and a preparation method of the lithium iron phosphate battery positive electrode slurry. Comprising a box body, a tank body is connected to the interior of the box body in an embedded mode, a cover plate is connected to the upper surface of the tank body in an embedded mode, springs are fixedly connected to the interior of the box body, a removal plate is fixedly connected to the ends, away from the box body, of the springs, and a push plate is slidably connected to the upper surface of the removal plate; the inner wall of the box body is movably connected with an electric push rod through a bearing; an electric push rod is started to drive a push plate to move in a removal plate to extrude the lithium iron phosphate battery positive electrode slurry in the removal plate to eliminate bubbles, and the bubbles in the lithium iron phosphate battery positive electrode slurry can be adsorbed on the surface of an inclined plate to perform secondary bubble removal on the lithium iron phosphate battery positive electrode slurry; bubbles in the positive electrode slurry of the lithium iron phosphate battery can be transversely cut by utilizing the conical plate, so that the bubbles in the positive electrode slurry of the lithium iron phosphate battery can be removed for three times.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium iron phosphate battery positive electrode slurry preparation, and in particular to a lithium iron phosphate battery positive electrode slurry preparation device and a preparation method thereof. Background Art

[0002] The oscillation of the positive electrode slurry of lithium iron phosphate batteries involves the uniformity, stability of the slurry and its behavior during the coating process. Oscillation usually refers to the vibration or stirring of the slurry during the manufacturing and coating process, the purpose of which is to ensure the uniform mixing of the slurry and prevent precipitation and agglomeration. The slurry oscillation conditions (such as frequency, amplitude) and the selection of oscillation equipment directly affect the final battery performance. Reasonable oscillation control can optimize the fluidity of the slurry, improve the coating quality, and increase the cycle life and capacity of the battery. The wrong oscillation method may cause slurry stratification and affect the electrochemical performance of the battery;

[0003] When the positive electrode slurry of the lithium iron phosphate battery is being prepared by stirring, a large number of bubbles exist in the positive electrode slurry of the lithium iron phosphate battery, and the bubbles in the positive electrode slurry of the lithium iron phosphate battery cannot be completely removed, resulting in the positive electrode slurry of the lithium iron phosphate battery being easily affected by the bubbles during later use, thereby reducing the preparation quality of the positive electrode slurry of the lithium iron phosphate battery. At the same time, the stirring blade of the positive electrode slurry of the lithium iron phosphate battery cannot crush the large particles of the positive electrode slurry of the lithium iron phosphate battery, resulting in the positive electrode slurry of the lithium iron phosphate battery being not uniform enough during stirring. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the prior art, the present invention provides a device and method for preparing positive electrode slurry of lithium iron phosphate battery. When the positive electrode slurry of lithium iron phosphate battery enters the interior of the removal plate, the removal plate is subjected to the impact of the discharge of the positive electrode slurry of lithium iron phosphate battery and can be elastically moved up and down by a spring. The electric push rod is connected to an external power supply and the electric push rod is started to drive the push plate to move inside the removal plate to squeeze the positive electrode slurry of lithium iron phosphate battery in the removal plate to eliminate bubbles. When the positive electrode slurry of lithium iron phosphate battery penetrates the removal plate and enters the interior of the inclined plate, the inclined plate is provided with a Multiple throttle rods make the positive electrode slurry of the lithium iron phosphate battery pass through multiple throttle rods when flowing, thereby reducing the flow rate of the positive electrode slurry of the lithium iron phosphate battery, and the bubbles in the positive electrode slurry of the lithium iron phosphate battery can be adsorbed on the surface of the inclined plate to remove the bubbles of the positive electrode slurry of the lithium iron phosphate battery for the second time. When the positive electrode slurry of the lithium iron phosphate battery enters the interior of the collection box, the conical plate can be used to cut the bubbles in the positive electrode slurry of the lithium iron phosphate battery horizontally to remove the bubbles of the positive electrode slurry of the lithium iron phosphate battery for the third time, thereby improving the bubble removal of the positive electrode slurry of the lithium iron phosphate battery The removal efficiency can improve the preparation quality of the positive electrode slurry of the lithium iron phosphate battery. The starting motor can drive the first rotating rod to rotate. The rotation of the first rotating rod can drive the fixing ring to rotate together with the stirring blade and the rubber sheet to stir and mix the positive electrode slurry of the lithium iron phosphate battery in the tank. When the rubber sheet is rotating, the open box is affected by the flow of the positive electrode slurry of the lithium iron phosphate battery during stirring, which can drive the open box to rotate. When the open box rotates, it can drive the cross bar and the thorn rod to rotate. The thorn rod can be used to crush large particles of the positive electrode slurry of the lithium iron phosphate battery. The stirring blade and the rubber sheet are continuously Stirring allows the rubber sheet to slap on the surface of the scraper, so that the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the rubber sheet can be scraped off by the scraper, and the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the stirring blade can vibrate due to the slapping of the rubber sheet on the scraper, so that the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the stirring blade can fall due to the vibration, so that when the lithium iron phosphate battery positive electrode slurry is stirred and prepared, the stirring part of the device can be cleaned, and the large particles of lithium iron phosphate battery positive electrode slurry can be crushed, thereby improving the stirring quality of the lithium iron phosphate battery positive electrode slurry.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the present invention provides the following technical solution: comprising a box body, a tank body is interlockedly connected to the interior of the box body, a cover plate is interlockedly connected to the upper surface of the tank body, a spring is fixedly connected to the interior of the box body, a removal plate is fixedly connected to the end of the spring away from the box body, a push plate is slidably connected to the upper surface of the removal plate, an electric push rod is movably connected to the inner wall of the box body through a bearing, and the output end of the electric push rod is fixedly connected to the push plate;

[0008] The lower surface of the removal plate is fixedly connected to an inclined plate, the upper surface of the inclined plate is provided with a groove, the inner bottom wall of the groove is fixedly connected to a throttling rod, the inner bottom wall of the box body is fixedly connected to a collecting box, and the collecting box is located below the inclined plate, the interior of the collecting box is fixedly connected to a mounting plate, and the upper surface of the mounting plate is fixedly connected to a conical plate.

[0009] Preferably, the upper surface of the cover is fixedly connected to a motor, the output end of the motor is fixedly connected to a first rotating rod, the outer surface of the first rotating rod is sleeved with a fixing ring, the outer surface of the fixing ring is fixedly connected to a stirring blade, and the front surface of the stirring blade is provided with a rubber sheet.

[0010] Preferably, the lower surface of the cover plate is movably connected to a second rotating rod via a bearing, and the second rotating rod is located on both sides of the first rotating rod, and the outer surface of the second rotating rod is provided with a connecting sleeve.

[0011] Preferably, the outer surface of the connecting sleeve is fixedly connected to an open box, the interior of the open box is fixedly connected to a cross bar, and both sides of the cross bar are fixedly connected to thorn rods.

[0012] Preferably, a scraper is provided on the lower surface of the cover plate, and the scraper is respectively located in front and behind the first rotating rod.

[0013] Preferably, baffles are embedded and connected on both sides of the box body, and pull plates are fixedly connected to the side surfaces of the baffles.

[0014] Preferably, a discharge pipe is fixedly connected to the lower surface of the tank body, and the bottom end of the discharge pipe is in contact with the upper surface of the baffle. A feed pipe is fixedly connected to the upper surface of the cover plate, and the feed pipe is located on the right side of the motor.

[0015] Preferably, a heating box is fixedly connected to the interior of the box body, and the heating box is sleeved on the outer surface of the tank body. An electric heating pipe is provided inside the heating box. A water inlet pipe is fixedly connected to the upper surface of the box body, and the water inlet pipe is communicated with the interior of the heating box.

[0016] Preferably, a temperature controller is provided on the front surface of the box body, and the temperature controller is electrically connected to the electric heating tube. A discharge pipe is fixedly connected to the front surface of the box body, and the discharge pipe is communicated with the interior of the collection box.

[0017] A device and method for preparing positive electrode slurry for lithium iron phosphate batteries, comprising the following steps:

[0018] S1. Pour the positive electrode slurry of the lithium iron phosphate battery into the interior of the tank body, and use the electric heating tube to heat the water in the heating box so that the heat in the heating box can be transferred to the tank body, so that the tank body is affected by the high temperature and the positive electrode slurry of the lithium iron phosphate battery can be heated and stirred at high temperature;

[0019] S2. The starting motor can drive the first rotating rod to rotate. The rotation of the first rotating rod can drive the fixing ring to rotate together with the stirring blade and the rubber sheet to stir and mix the lithium iron phosphate battery positive electrode slurry in the tank body. When the rubber sheet is rotating, the open box is affected by the flow of the lithium iron phosphate battery positive electrode slurry during stirring, which can drive the open box to rotate. When the open box rotates, it can drive the cross bar and the thorn rod to rotate. The thorn rod can be used to crush large particles of the lithium iron phosphate battery positive electrode slurry;

[0020] S3. Starting the electric push rod can drive the push plate to move inside the removal plate to squeeze the lithium iron phosphate battery positive electrode slurry in the removal plate to eliminate bubbles. The lithium iron phosphate battery positive electrode slurry needs to pass through multiple throttle rods when flowing. The bubbles in the lithium iron phosphate battery positive electrode slurry can be adsorbed on the surface of the inclined plate to perform secondary bubble removal on the lithium iron phosphate battery positive electrode slurry. When the lithium iron phosphate battery positive electrode slurry enters the interior of the collection box, the conical plate can be used to horizontally cut the bubbles in the lithium iron phosphate battery positive electrode slurry to perform tertiary bubble removal on the lithium iron phosphate battery positive electrode slurry.

[0021] Compared with the prior art, the present invention provides a device and method for preparing positive electrode slurry for lithium iron phosphate batteries, which have the following beneficial effects:

[0022] 1. When the positive electrode slurry of the lithium iron phosphate battery enters the interior of the removal plate, the removal plate can be impacted by the discharge of the positive electrode slurry of the lithium iron phosphate battery by using a spring to move up and down. The electric push rod is connected to the external power supply. When the electric push rod is started, the push plate can be driven to move inside the removal plate to squeeze the positive electrode slurry of the lithium iron phosphate battery in the removal plate to eliminate bubbles. When the positive electrode slurry of the lithium iron phosphate battery penetrates the removal plate and enters the interior of the inclined plate, the inclined plate is provided with multiple throttle rods, so that the positive electrode slurry of the lithium iron phosphate battery needs to pass through multiple throttle rods when flowing. The bubbles in the positive electrode slurry of the lithium iron phosphate battery can be adsorbed on the surface of the inclined plate to remove the bubbles in the positive electrode slurry of the lithium iron phosphate battery for the second time. When the positive electrode slurry of the lithium iron phosphate battery enters the interior of the collecting box, the bubbles in the positive electrode slurry of the lithium iron phosphate battery can be cut transversely by the conical plate to remove the bubbles in the positive electrode slurry of the lithium iron phosphate battery for the third time, thereby improving the bubble removal efficiency of the positive electrode slurry of the lithium iron phosphate battery and improving the preparation quality of the positive electrode slurry of the lithium iron phosphate battery.

[0023] 2. The starting motor of the present invention can drive the first rotating rod to rotate, and the rotation of the first rotating rod can drive the fixing ring to drive the stirring blade and the rubber sheet to rotate together to stir and mix the positive electrode slurry of the lithium iron phosphate battery in the tank body. When the rubber sheet is rotating, the open box is affected by the flow of the positive electrode slurry of the lithium iron phosphate battery during stirring, which can drive the open box to rotate. When the open box rotates, it can drive the cross bar and the thorn rod to rotate. The thorn rod can be used to crush large particles of the positive electrode slurry of the lithium iron phosphate battery. The stirring blade and the rubber sheet are continuously stirred so that the rubber sheet can be The surface of the scraper is beaten on the rubber sheet, so that the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the rubber sheet can be scraped off by the scraper, and the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the stirring blade can vibrate due to the beating of the rubber sheet on the scraper, so that the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the stirring blade can fall due to the vibration, so that when the lithium iron phosphate battery positive electrode slurry is stirred and prepared, the stirring part of the device can be cleaned, and the large particles of lithium iron phosphate battery positive electrode slurry can be crushed, thereby improving the stirring quality of the lithium iron phosphate battery positive electrode slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the tank body disassembly structure of the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0027] Figure 4 This is a schematic diagram of the internal structure of the box body of the present invention;

[0028] Figure 5 This is a schematic diagram of the inclined plate structure from above in the present invention;

[0029] Figure 6 This is a schematic diagram of the collection box structure of the present invention.

[0030] Among them: 1. Box body; 2. Tank body; 3. Feed pipe; 4. Motor; 5. Water inlet pipe; 6. Temperature controller; 7. Discharge pipe; 8. Pull plate; 9. Baffle; 10. Cover plate; 11. Scraper; 12. Removal plate; 13. Electric push rod; 14. Push plate; 15. Spike rod; 16. Cross bar; 17. Open box; 18. Second rotating rod; 19. Connecting sleeve; 20. Rubber sheet; 21. First rotating rod; 22. Fixed ring; 23. Stirring blade; 24. Electric heating tube; 25. Discharge pipe; 26. Spring; 27. Inclined plate; 28. Collection box; 29. Heating box; 30. Throttle rod; 31. Groove; 32. Conical plate; 33. Mounting plate. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1:

[0033] See also Figure 1-6 , a preparation device for positive electrode slurry of lithium iron phosphate battery, including a box body 1, the interior of the box body 1 is embedded with a tank body 2, the lower surface of the tank body 2 is fixedly connected with a discharge pipe 25, and the bottom end of the discharge pipe 25 is in contact with the upper surface of the baffle 9, the upper surface of the cover plate 10 is fixedly connected with a feed pipe 3, and the feed pipe 3 is located on the right side of the motor 4, the interior of the box body 1 is fixedly connected with a heating box 29, and the heating box 29 is sleeved on the outer surface of the tank body 2, the interior of the heating box 29 is provided with an electric heating pipe 24, the upper surface of the box body 1 is fixedly connected with a water inlet pipe 5, and the water inlet pipe 5 is communicated with the interior of the heating box 29, and the front surface of the box body 1 is provided with a temperature controller 6, and the temperature controller 6 is electrically connected to the electric heating tube 24, the front surface of the box body 1 is fixedly connected with a discharge pipe 7, and the discharge pipe 7 is communicated with the inside of the collection box 28, and the water from the outside can be poured into the inside of the heating box 29 by using the water inlet pipe 5, and the electric heating tube 24 is connected to the external power supply, and the water in the heating box 29 can be heated by the electric heating tube 24, so that the heat in the heating box 29 can be transferred to the tank body 2, so that the tank body 2 can be affected by the high temperature to heat and stir the lithium iron phosphate battery positive electrode slurry at high temperature. After the heating and stirring of the lithium iron phosphate battery positive electrode slurry are completed, the stirred lithium iron phosphate battery positive electrode slurry can be discharged through the discharge pipe 7.

[0034] The upper surface of the tank body 2 is fitted with a cover plate 10, and the interior of the box body 1 is fixedly connected with a spring 26. The end of the spring 26 away from the box body 1 is fixedly connected with a removal plate 12, and the upper surface of the removal plate 12 is slidably connected with a push plate 14. The inner wall of the box body 1 is movably connected with an electric push rod 13 through a bearing, and the output end of the electric push rod 13 is fixedly connected to the push plate 14. The lower surface of the removal plate 12 is fixedly connected with an inclined plate 27, and the upper surface of the inclined plate 27 is provided with a groove 31. The inner bottom wall of the groove 31 is fixedly connected with a throttle rod 30. The inner bottom wall of the box body 1 is fixedly connected with a collecting The collecting box 28 is provided with a mounting plate 33 fixedly connected to the interior of the collecting box 28, and the upper surface of the mounting plate 33 is fixedly connected to the conical plate 32. The two sides of the box body 1 are fitted with baffles 9, and the side surface of the baffle 9 is fixedly connected with a pull plate 8. When the positive electrode slurry of the lithium iron phosphate battery is stirred, the pull plate 8 is pulled so that the baffle 9 can be moved to one side and separated from the discharge pipe 7, so that the positive electrode slurry of the lithium iron phosphate battery can be discharged from the inside of the discharge pipe 7 to the inside of the removal plate 12, the inclined plate 27 and the collecting box 28. When the positive electrode slurry of the lithium iron phosphate battery enters the collecting box 28, the baffle 9 is fixedly connected to the upper surface of the collecting box 28. When the positive electrode slurry of the lithium iron phosphate battery enters the interior of the removal plate 12, the removal plate 12 is impacted by the discharge of the positive electrode slurry of the lithium iron phosphate battery and can be elastically moved up and down by the spring 26. The electric push rod 13 is connected to the external power supply. When the electric push rod 13 is started, the push plate 14 can be driven to move inside the removal plate 12 to squeeze the positive electrode slurry of the lithium iron phosphate battery in the removal plate 12 to eliminate bubbles. When the positive electrode slurry of the lithium iron phosphate battery penetrates the removal plate 12 and enters the interior of the inclined plate 27, the internal of the inclined plate 27 is provided with multiple throttle rods 30, so that the positive electrode slurry of the lithium iron phosphate battery needs to pass through multiple throttle rods when flowing. 30, thereby reducing the flow rate of the lithium iron phosphate battery positive electrode slurry, and the bubbles in the lithium iron phosphate battery positive electrode slurry can be adsorbed on the surface of the inclined plate 27 to perform secondary bubble removal on the lithium iron phosphate battery positive electrode slurry. When the lithium iron phosphate battery positive electrode slurry enters the interior of the collecting box 28, the conical plate 32 can be used to transversely cut the bubbles in the lithium iron phosphate battery positive electrode slurry to perform tertiary bubble removal on the lithium iron phosphate battery positive electrode slurry, thereby improving the bubble removal efficiency of the lithium iron phosphate battery positive electrode slurry and improving the preparation quality of the lithium iron phosphate battery positive electrode slurry.

[0035] The upper surface of the cover plate 10 is fixedly connected to the motor 4, and the output end of the motor 4 is fixedly connected to the first rotating rod 21. The outer surface of the first rotating rod 21 is provided with a fixing ring 22. The outer surface of the fixing ring 22 is fixedly connected to the stirring blade 23. The front surface of the stirring blade 23 is provided with a rubber sheet 20. The lower surface of the cover plate 10 is movably connected to the second rotating rod 18 through a bearing. The second rotating rod 18 is located on both sides of the first rotating rod 21. The outer surface of the second rotating rod 18 is provided with a connecting sleeve 19. The outer surface of the connecting sleeve 19 is fixed. The cover 10 is fixedly connected with an open box 17, the interior of the open box 17 is fixedly connected with a cross bar 16, and both sides of the cross bar 16 are fixedly connected with a thorn rod 15. The lower surface of the cover 10 is provided with a scraper 11, and the scraper 11 is respectively located in the front and rear of the first rotating rod 21. When the positive electrode slurry of the lithium iron phosphate battery enters the interior of the tank body 2, the motor 4 is connected to the external power supply, and the motor 4 is started to drive the first rotating rod 21 to rotate. The rotation of the first rotating rod 21 enables the fixing ring 22 to drive the stirring blade 23 and the rubber sheet 20 to rotate together. The lithium iron phosphate battery positive electrode slurry in the tank body 2 is stirred and mixed. When the rubber sheet 20 is rotating, the open box 17 is affected by the flow of the lithium iron phosphate battery positive electrode slurry during stirring, and can drive the open box 17 to rotate. When the open box 17 rotates, it can drive the cross bar 16 and the thorn rod 15 to rotate. The thorn rod 15 can be used to crush large particles of lithium iron phosphate battery positive electrode slurry. The stirring blade 23 and the rubber sheet 20 are continuously stirred, so that the rubber sheet 20 can be slapped on the surface of the scraper 11, so that the surface of the rubber sheet 20 absorbs the The attached lithium iron phosphate battery positive electrode slurry can be scraped off by the scraper 11, and the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the stirring blade 23 can vibrate due to the beating of the scraper 11 by the rubber sheet 20, so that the lithium iron phosphate battery positive electrode slurry adsorbed on the surface of the stirring blade 23 can fall off due to the vibration, so that when the lithium iron phosphate battery positive electrode slurry is stirred and prepared, the stirring part of the device can be cleaned, and the large particles of lithium iron phosphate battery positive electrode slurry can be crushed, thereby improving the stirring quality of the lithium iron phosphate battery positive electrode slurry.

[0036] Example 2:

[0037] A device and method for preparing positive electrode slurry for lithium iron phosphate batteries, comprising the following steps:

[0038] S1. Pour the positive electrode slurry of the lithium iron phosphate battery into the interior of the tank body 2. Use the electric heating tube 24 to heat the water in the heating box 29 so that the heat in the heating box 29 can be transferred to the tank body 2. The tank body 2 is affected by the high temperature and the positive electrode slurry of the lithium iron phosphate battery can be heated and stirred at high temperature.

[0039] S2. The starting motor 4 can drive the first rotating rod 21 to rotate. The rotation of the first rotating rod 21 can drive the fixing ring 22 to drive the stirring blade 23 and the rubber sheet 20 to rotate together to stir and mix the lithium iron phosphate battery positive electrode slurry in the tank body 2. When the rubber sheet 20 is rotating, the open box 17 is affected by the flow of the lithium iron phosphate battery positive electrode slurry during stirring, and can drive the open box 17 to rotate. When the open box 17 rotates, it can drive the cross bar 16 and the thorn rod 15 to rotate. The thorn rod 15 can be used to crush large particles of the lithium iron phosphate battery positive electrode slurry;

[0040] S3. Starting the electric push rod 13 can drive the push plate 14 to move inside the removal plate 12 to squeeze the lithium iron phosphate battery positive electrode slurry in the removal plate 12 to eliminate bubbles. The lithium iron phosphate battery positive electrode slurry needs to pass through multiple throttle rods 30 when flowing. The bubbles in the lithium iron phosphate battery positive electrode slurry can be adsorbed on the surface of the inclined plate 27 to perform secondary bubble removal on the lithium iron phosphate battery positive electrode slurry. When the lithium iron phosphate battery positive electrode slurry enters the interior of the collecting box 28, the conical plate 32 can be used to transversely cut the bubbles in the lithium iron phosphate battery positive electrode slurry to perform tertiary bubble removal on the lithium iron phosphate battery positive electrode slurry.

[0041] When in use, the positive electrode slurry of the lithium iron phosphate battery is poured into the interior of the tank body 2, and the electric heating tube 24 can be used to heat the water in the heating box 29, so that the heat in the heating box 29 can be transferred to the tank body 2, so that the tank body 2 is affected by the high temperature and the positive electrode slurry of the lithium iron phosphate battery can be heated and stirred at high temperature. The starting motor 4 can drive the first rotating rod 21 to rotate, and the rotation of the first rotating rod 21 can drive the fixing ring 22 to drive the stirring blade 23 and the rubber sheet 20 to rotate together to stir and mix the positive electrode slurry of the lithium iron phosphate battery in the tank body 2. When the rubber sheet 20 is rotating, the open box 17 is affected by the flow of the positive electrode slurry of the lithium iron phosphate battery during stirring, which can drive the open box 17 to rotate. When the open box 17 rotates, it can drive the cross bar 1 6 rotates with the thorn rod 15, and the thorn rod 15 can be used to crush large particles of lithium iron phosphate battery positive electrode slurry. Starting the electric push rod 13 can drive the push plate 14 to move inside the removal plate 12 to squeeze the lithium iron phosphate battery positive electrode slurry in the removal plate 12 to eliminate bubbles. The lithium iron phosphate battery positive electrode slurry needs to pass through multiple throttle rods 30 when flowing. The bubbles in the lithium iron phosphate battery positive electrode slurry can be adsorbed on the surface of the inclined plate 27 to perform secondary bubble removal on the lithium iron phosphate battery positive electrode slurry. When the lithium iron phosphate battery positive electrode slurry enters the interior of the collecting box 28, the conical plate 32 can be used to transversely cut the bubbles in the lithium iron phosphate battery positive electrode slurry to perform tertiary bubble removal on the lithium iron phosphate battery positive electrode slurry.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing positive electrode slurry for lithium iron phosphate batteries, comprising a box (1), characterized in that: The interior of the box body (1) is connected in an interlocking manner with the tank body (2), the upper surface of the tank body (2) is connected in an interlocking manner with the cover plate (10), the interior of the box body (1) is fixedly connected with a spring (26), the end of the spring (26) away from the box body (1) is fixedly connected with a removal plate (12), the upper surface of the removal plate (12) is slidably connected with a push plate (14), the inner wall of the box body (1) is movably connected with an electric push rod (13) through a bearing, and the output end of the electric push rod (13) is fixedly connected to the push plate (14); The lower surface of the removal plate (12) is fixedly connected to an inclined plate (27), the upper surface of the inclined plate (27) is provided with a groove (31), the inner bottom wall of the groove (31) is fixedly connected to a throttling rod (30), the inner bottom wall of the box body (1) is fixedly connected to a collection box (28), and the collection box (28) is located below the inclined plate (27), the interior of the collection box (28) is fixedly connected to a mounting plate (33), and the upper surface of the mounting plate (33) is fixedly connected to a conical plate (32).

2. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 1, characterized in that: The upper surface of the cover plate (10) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a first rotating rod (21), the outer surface of the first rotating rod (21) is sleeved with a fixing ring (22), the outer surface of the fixing ring (22) is fixedly connected to a stirring blade (23), and the front surface of the stirring blade (23) is provided with a rubber sheet (20).

3. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 1, characterized in that: The lower surface of the cover plate (10) is movably connected to a second rotating rod (18) via a bearing, and the second rotating rod (18) is located on both sides of the first rotating rod (21). The outer surface of the second rotating rod (18) is sleeved with a connecting sleeve (19).

4. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 3, characterized in that: The outer surface of the connecting sleeve (19) is fixedly connected to an open box (17), the interior of the open box (17) is fixedly connected to a cross bar (16), and both sides of the cross bar (16) are fixedly connected to thorn rods (15).

5. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 1, characterized in that: A scraper (11) is provided on the lower surface of the cover plate (10), and the scraper (11) is respectively located in front and behind the first rotating rod (21).

6. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 1, characterized in that: Baffles (9) are embedded and connected on both sides of the box body (1), and pull plates (8) are fixedly connected to the side surfaces of the baffles (9).

7. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 1, characterized in that: A discharge pipe (25) is fixedly connected to the lower surface of the tank body (2), and the bottom end of the discharge pipe (25) is in contact with the upper surface of the baffle (9); a feed pipe (3) is fixedly connected to the upper surface of the cover plate (10), and the feed pipe (3) is located on the right side of the motor (4).

8. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 1, characterized in that: The interior of the box body (1) is fixedly connected to a heating box (29), and the heating box (29) is sleeved on the outer surface of the tank body (2). An electric heating pipe (24) is provided inside the heating box (29). The upper surface of the box body (1) is fixedly connected to a water inlet pipe (5), and the water inlet pipe (5) is communicated with the interior of the heating box (29).

9. The device for preparing positive electrode slurry for lithium iron phosphate batteries according to claim 1, characterized in that: The front surface of the box body (1) is provided with a temperature controller (6), and the temperature controller (6) is electrically connected to the electric heating tube (24). The front surface of the box body (1) is fixedly connected with a discharge pipe (7), and the discharge pipe (7) is communicated with the interior of the collection box (28).

10. A device and method for preparing positive electrode slurry for lithium iron phosphate batteries according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Pour the positive electrode slurry of the lithium iron phosphate battery into the interior of the tank body (2), and use the electric heating tube (24) to heat the water in the heating box (29), so that the heat in the heating box (29) can be transferred to the tank body (2), so that the tank body (2) is affected by the high temperature and the positive electrode slurry of the lithium iron phosphate battery can be heated and stirred at high temperature; S2, the starting motor (4) can drive the first rotating rod (21) to rotate, and the rotation of the first rotating rod (21) can drive the fixing ring (22) to drive the stirring blade (23) and the rubber sheet (20) to rotate together to stir and mix the lithium iron phosphate battery positive electrode slurry in the tank body (2); when the rubber sheet (20) is rotating, the open box (17) is affected by the flow of the lithium iron phosphate battery positive electrode slurry during stirring, and can drive the open box (17) to rotate; when the open box (17) is rotating, it can drive the cross bar (16) and the thorn rod (15) to rotate, and the thorn rod (15) can be used to crush large particles of lithium iron phosphate battery positive electrode slurry; S3. Starting the electric push rod (13) can drive the push plate (14) to move inside the removal plate (12) to squeeze the lithium iron phosphate battery positive electrode slurry in the removal plate (12) to eliminate bubbles. The lithium iron phosphate battery positive electrode slurry needs to pass between multiple throttle rods (30) when flowing. The bubbles in the lithium iron phosphate battery positive electrode slurry can be adsorbed on the surface of the inclined plate (27) to perform secondary bubble removal on the lithium iron phosphate battery positive electrode slurry. When the lithium iron phosphate battery positive electrode slurry enters the interior of the collection box (28), the conical plate (32) can be used to horizontally cut the bubbles in the lithium iron phosphate battery positive electrode slurry to perform tertiary bubble removal on the lithium iron phosphate battery positive electrode slurry.

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