Antistatic water-based adhesive material for lithium-ion batteries and preparation method and preparation device

Abstract

The present invention provides antistatic water-based adhesive material for lithium ion batteries and preparation method and preparation device, belonging to the technical field of water-based adhesive materials; including the following raw materials: water-based composite polyvinyl alcohol, sodium carbonate solution, conductive powder, defoamer, organic dispersant; its specific formula includes the following raw materials: water-based composite polyvinyl alcohol 100-200g, sodium carbonate solution 20-30g, conductive powder 10-15g, defoamer 3-6g, organic dispersant 5-10g, sodium carbonate solution The concentration is 6-10g / L. The present invention can heat the inside of the glue during stirring, and the inner wall of the mixing box heats the outside of the glue at the same time. The two cooperate to improve the heating rate and uniformity of the glue, avoid the phenomenon of local solidification, and during the stirring process, the scraper plate moves up and down to scrape the raw materials on the inner wall of the mixing box, avoiding the oxidation reaction of the inner wall of the mixing box that the glue contacts the high temperature for a long time, and improving the production quality of the glue.

Description

Technical Field

[0001] The invention relates to the technical field of water-based adhesive materials, and in particular to an antistatic water-based adhesive material for lithium-ion batteries and a preparation method and a preparation device. Background Art

[0002] Entering the 21st century, energy and resources have become a global issue, directly related to the development, stability of human society and national security. One of the practical ways to alleviate the energy crisis is to develop and use clean renewable energy and efficient energy storage systems. As a typical rechargeable energy storage device, lithium-ion batteries have been occupying an absolute dominant position in the market for nearly 20 years due to their high energy density, long cycle life and high safety. However, the "shuttle effect" of lithium polysulfides during the charging and discharging of lithium-ion batteries and the complex solid-liquid-solid phase changes of sulfur positive electrode active materials during the charging and discharging process have seriously hindered the practical application and industrial development of lithium-sulfur batteries. As an important component of the sulfur positive electrode, the binder can inhibit the diffusion of lithium polysulfides in the electrolyte and protect the integrity of the positive electrode structure.

[0003] In order to ensure the safety of lithium-ion batteries during transportation and assembly and eliminate the safety hazard of misactivation due to static electricity, anti-static safety design is usually required during the design process. Traditional lithium-ion batteries use polyvinylidene fluoride as an oily material, and toxic organic solvents are required during the slurry preparation process, which has an adverse effect on the health of production employees and cannot reduce the shuttling phenomenon of sulfides. The positive electrode structure only transfers the static discharge position to the weak static accumulation point and cannot be stabilized. It is easy to be broken down under the static discharge voltage, and there are still safety hazards. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide an antistatic water-based adhesive material for lithium-ion batteries and a preparation method and a preparation device to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] Antistatic water-based adhesive material for lithium-ion batteries, including the following raw materials: water-based composite polyvinyl alcohol, sodium carbonate solution, conductive powder, defoaming agent, organic dispersant;

[0007] The specific formula includes the following raw materials: 100-200g of water-based composite polyvinyl alcohol, 20-30g of sodium carbonate solution, 10-15g of conductive powder, 3-6g of defoaming agent, and 5-10g of organic dispersant. The concentration of the sodium carbonate solution is 6-10g / L.

[0008] Preferably, the aqueous composite polyvinyl alcohol is prepared by mixing polyvinyl alcohol and acetone in a container at 100-120° C., reacting for 1-2 hours to obtain a composite product with an acid value of 55-65 / g, then adding a deionized water solution with a solid content of 50-60% to the composite product, and stirring evenly to obtain the aqueous composite polyvinyl alcohol.

[0009] Preferably, the conductive powder is a mixture of one or more of graphene powder, nano silver powder, magnesium carbonate powder and aluminum nitride powder, and the particle size of the conductive powder is 100-120 μm.

[0010] Preferably, the defoaming agent is a mixture of one or more of ethylene glycol, ethanol and propanol.

[0011] Preferably, the organic dispersant is a mixture of propylene oxide benzyl ether and dodecyl glycidyl ether, and the weight ratio of propylene oxide benzyl ether to dodecyl glycidyl ether is 3:2.

[0012] A method for preparing an antistatic water-based adhesive material for lithium-ion batteries comprises the following steps:

[0013] Step 1: prepare the raw materials according to the weight of the antistatic water-based adhesive material, and dry the conductive powder for later use;

[0014] Step 2: Pour the aqueous composite polyvinyl alcohol and sodium carbonate solution into a mixing device and mix them evenly, heat them to 100-120° C., stir them at a constant speed of 600-800 r / min, and react for 20-30 minutes to obtain a mixture;

[0015] Step 3: Add conductive powder and organic dispersant to the mixture and stir to mix evenly. After cooling to 50-60° C., add defoaming agent to obtain an antistatic water-based adhesive material.

[0016] A preparation device for antistatic water-based adhesive material for lithium-ion batteries, comprising a mixing device for preparing antistatic water-based adhesive material for lithium-ion batteries, the mixing device comprising a mixing box and a water storage tank, the upper and lower sides of the mixing box are respectively provided with a feed port and a discharge pipe, the upper and lower sides of the mixing box are respectively rotatably connected with a first hollow shaft and a second hollow shaft through bearings, the top of the first hollow shaft is provided with a driving component, the side away from the first hollow shaft and the second hollow shaft is connected to the water storage tank through a circulation component, the side close to the first hollow shaft and the second hollow shaft is both located inside the mixing box and is provided with a hollow stirring component, the outer surface of the first hollow shaft located inside the mixing box is fixedly connected to a worm, the inner top wall of the mixing box is fixedly connected to a box body, a rotating shaft is rotatably connected between the left and right inner walls of the box body through bearings, the outer surface of the rotating shaft is fixedly connected to a worm wheel, and the worm wheel The gear train is meshed with the worm gear and the left and right ends of the rotating shaft are fixedly connected to a circular disc, one side edge of the circular disc is rotatably connected to a connecting rod by a first pin shaft, and the other end of the connecting rod is rotatably connected to the first vertical rod by a second pin shaft, and the top of the first vertical rod is provided with a second vertical rod through a transmission assembly, and the bottom end of the second vertical rod is provided with a circular ring, and a scraper plate is fixedly connected to the outer side of the circular ring, and the scraper plate contacts the inner wall of the mixing box, and a cavity is opened in the side wall of the mixing box, and a first electric heating tube is wound inside the cavity, and a second electric heating tube is wound inside the water tank, and the driving assembly includes a protective shell fixedly connected to the upper surface of the mixing box, and the inner top wall of the protective shell is fixedly connected to the motor, and the output end of the motor is fixedly connected to the first gear, and the top end of the first hollow shaft is located inside the protective shell and fixedly connected to the second gear, and the first gear is meshed with the second gear.

[0017] Preferably, the circulation component includes a circulation pump fixedly connected to the inner bottom wall of the water tank, the output end of the circulation pump is fixedly connected to a first connecting pipe, the first connecting pipe is connected to the bottom end of the second hollow shaft through a rotating joint, the top end of the first hollow shaft is rotatably connected to the second connecting pipe through a rotating joint, and the other end of the second connecting pipe is connected to the water tank.

[0018] Preferably, the stirring assembly includes two upper and lower first stirring tubes, a plurality of second stirring tubes are fixedly connected between the two first stirring tubes, the upper and lower two first stirring tubes are fixedly connected to the first hollow shaft and the second hollow shaft respectively, and the cross-sections of the first stirring tube and the second stirring tube are both elliptical.

[0019] Preferably, the transmission assembly includes an installation box fixedly connected to the left and right sides of the top wall of the mixing box, the top ends of the first vertical rod and the second vertical rod penetrate the inner bottom wall of the installation box and are fixedly connected with the first rack and the second rack respectively, the first vertical rod and the second vertical rod are both slidably connected to the installation box, the left and right inner walls of the installation box are rotatably connected with round rods through bearings, the outer surfaces of the round rods are fixedly connected with the third gear and the fourth gear, the third gear and the fourth gear are respectively meshed with the first rack and the second rack, and the third gear is smaller than the diameter of the fourth gear.

[0020] Compared with the existing prior art, the present invention has the following beneficial effects:

[0021] The present invention adopts water-based composite polyvinyl alcohol, which is more environmentally friendly and easy to operate, and a small molecule organic dispersant that can participate in the reaction is used to control the viscosity of the system. The two work synergistically to avoid the difficult-to-reconcile contradiction between conventional water-based resins and thickening time, which is beneficial to further enhance the cohesion of the polymer during the hydration reaction of the material and increase the bonding force of the water-based adhesive material. The conductive powder component therein makes it have higher conductivity and smaller resistance value, so that the finished product has good antistatic performance and can meet the production needs of lithium electronic batteries.

[0022] The preparation device can heat the inside of the glue during the stirring process, and the inner wall of the mixing box heats the outside of the glue. The cooperation of the two improves the heating rate and uniformity of the glue and avoids local solidification. At the same time, during the stirring process, the scraper plate moves up and down to scrape the raw materials on the inner wall of the mixing box, avoiding the glue from contacting the high-temperature inner wall of the mixing box for a long time to cause oxidation reaction, thereby improving the production quality of the glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 The present invention Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 The present invention Figure 2 The enlarged structural diagram at B in the middle;

[0027] Figure 5 It is a schematic diagram of the internal three-dimensional structure of the present invention;

[0028] Figure 6 The present invention Figure 5 The enlarged structural diagram at C in the middle;

[0029] Figure 7 The present invention Figure 5 Enlarged structural diagram at D in the middle.

[0030] Explanation of the numbers in the schematic diagram: 1. Mixing box; 2. Water storage tank; 3. Feed inlet; 4. Discharge pipe; 5. First hollow shaft; 6. Second hollow shaft; 7. Worm; 8. Box; 9. Rotating shaft; 10. Worm gear; 11. First pin shaft; 12. Connecting rod; 13. Second pin shaft; 14. First vertical rod; 15. Transmission assembly; 16. Second vertical rod; 17. Ring; 18. Scraper; 19. Cavity; 20. First electric heating tube; 2 1. Second electric heating tube; 22. Protective shell; 23. Motor; 24. First gear; 25. Second gear; 26. Disc; 201. Circulation pump; 202. First connecting tube; 203. Second connecting tube; 601. First stirring tube; 602. Second stirring tube; 1501. Installation box; 1502. First rack; 1503. Second rack; 1504. Round rod; 1505. Third gear; 1506. Fourth gear. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. 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 creative work are within the scope of protection of the present invention.

[0032] Example 1.

[0033] The embodiment of the present invention provides an antistatic water-based adhesive material for lithium-ion batteries, comprising the following raw materials: water-based composite polyvinyl alcohol, sodium carbonate solution, conductive powder, defoaming agent, and organic dispersant;

[0034] The specific formula includes the following raw materials: 100g of water-based composite polyvinyl alcohol, 20g of sodium carbonate solution, 10g of conductive powder, 3g of defoaming agent, and 5g of organic dispersant, and the concentration of the sodium carbonate solution is 6g / L.

[0035] In this embodiment, the aqueous composite polyvinyl alcohol is prepared by mixing polyvinyl alcohol and acetone in a container at 100°C, reacting for 1 hour to obtain a composite product with an acid value of 55 / g, and then adding a deionized water solution with a solid content of 60% to the composite product, and stirring evenly to obtain the aqueous composite polyvinyl alcohol.

[0036] In this embodiment, the conductive powder is a mixture of one or more of graphene powder, nano silver powder, magnesium carbonate powder and aluminum nitride powder, and the particle size of the conductive powder is 100 μm.

[0037] In this embodiment, the defoaming agent is a mixture of one or more of ethylene glycol, ethanol and propanol.

[0038] In this embodiment, the organic dispersant is a mixture of propylene oxide benzyl ether and dodecyl glycidyl ether, and the weight ratio of propylene oxide benzyl ether to dodecyl glycidyl ether is 3:2.

[0039] A method for preparing an antistatic water-based adhesive material for a lithium-ion battery comprises the following steps:

[0040] Step 1: prepare the raw materials according to the weight of the antistatic water-based adhesive material, and dry the conductive powder for later use;

[0041] Step 2: Pour the aqueous composite polyvinyl alcohol and sodium carbonate solution into a mixing box and mix them evenly, heat them to 100° C., stir them at a constant speed of 600 r / min, and react for 20 minutes to obtain a mixture;

[0042] Step 3: Add conductive powder and organic dispersant to the mixture and stir to mix evenly. After cooling to 50° C., add defoaming agent to obtain an antistatic water-based adhesive material.

[0043] Example 2.

[0044] The embodiment of the present invention provides an antistatic water-based adhesive material for lithium-ion batteries, comprising the following raw materials: water-based composite polyvinyl alcohol, sodium carbonate solution, conductive powder, defoaming agent, and organic dispersant;

[0045] The specific formula includes the following raw materials: 150g of water-based composite polyvinyl alcohol, 25g of sodium carbonate solution, 13g of conductive powder, 5g of defoaming agent, and 8g of organic dispersant, and the concentration of the sodium carbonate solution is 8g / L.

[0046] In this embodiment, the aqueous composite polyvinyl alcohol is prepared by mixing polyvinyl alcohol and acetone in a container at 110° C., reacting for 1.5 hours to obtain a composite product with an acid value of 60 / g, and then adding a deionized water solution with a solid content of 55% to the composite product, and stirring evenly to obtain the aqueous composite polyvinyl alcohol.

[0047] In this embodiment, the conductive powder is a mixture of one or more of graphene powder, nano silver powder, magnesium carbonate powder and aluminum nitride powder, and the particle size of the conductive powder is 110 μm.

[0048] In this embodiment, the defoaming agent is a mixture of one or more of ethylene glycol, ethanol and propanol.

[0049] In this embodiment, the organic dispersant is a mixture of propylene oxide benzyl ether and dodecyl glycidyl ether, and the weight ratio of propylene oxide benzyl ether to dodecyl glycidyl ether is 3:2.

[0050] A method for preparing an antistatic water-based adhesive material for a lithium-ion battery comprises the following steps:

[0051] Step 1: prepare the raw materials according to the weight of the antistatic water-based adhesive material, and dry the conductive powder for later use;

[0052] Step 2: Pour the aqueous composite polyvinyl alcohol and sodium carbonate solution into a mixing box and mix them evenly, heat them to 110° C. and stir them at a constant speed of 700 r / min, and react for 25 minutes to obtain a mixture;

[0053] Step 3: Add conductive powder and organic dispersant to the mixture and stir to mix evenly. After cooling to 55° C., add defoaming agent to obtain an antistatic water-based adhesive material.

[0054] Example 3.

[0055] The embodiment of the present invention provides an antistatic water-based adhesive material for lithium-ion batteries, comprising the following raw materials: water-based composite polyvinyl alcohol, sodium carbonate solution, conductive powder, defoaming agent, and organic dispersant;

[0056] The specific formula includes the following raw materials: 200g of water-based composite polyvinyl alcohol, 30g of sodium carbonate solution, 15g of conductive powder, 6g of defoaming agent, and 10g of organic dispersant, and the concentration of the sodium carbonate solution is 10g / L.

[0057] In this embodiment, the aqueous composite polyvinyl alcohol is prepared by mixing polyvinyl alcohol and acetone in a container at 120° C., reacting for 2 hours to obtain a composite product with an acid value of 65 / g, and then adding a deionized water solution with a solid content of 60% to the composite product, and stirring evenly to obtain the aqueous composite polyvinyl alcohol.

[0058] In this embodiment, the conductive powder is a mixture of one or more of graphene powder, nano silver powder, magnesium carbonate powder and aluminum nitride powder, and the particle size of the conductive powder is 120 μm.

[0059] In this embodiment, the defoaming agent is a mixture of one or more of ethylene glycol, ethanol and propanol.

[0060] In this embodiment, the organic dispersant is a mixture of propylene oxide benzyl ether and dodecyl glycidyl ether, and the weight ratio of propylene oxide benzyl ether to dodecyl glycidyl ether is 3:2.

[0061] A method for preparing an antistatic water-based adhesive material for a lithium-ion battery comprises the following steps:

[0062] Step 1: prepare the raw materials according to the weight of the antistatic water-based adhesive material, and dry the conductive powder for later use;

[0063] Step 2: Pour the aqueous composite polyvinyl alcohol and sodium carbonate solution into a mixing box and mix them evenly, heat them to 120° C. and stir them at a constant speed of 800 r / min, and react for 30 minutes to obtain a mixture;

[0064] Step 3: Add conductive powder and organic dispersant to the mixture and stir to mix evenly. After cooling to 60° C., add defoaming agent to obtain an antistatic water-based adhesive material.

[0065] Figure 1-7 A preparation device for an antistatic water-based adhesive material for lithium-ion batteries provided as an exemplary embodiment includes a mixing device for preparing the antistatic water-based adhesive material for lithium-ion batteries, the mixing device including a mixing box 1 and a water tank 2, a feed port 3 and a discharge pipe 4 are respectively provided on the upper and lower sides of the mixing box 1, a first hollow shaft 5 and a second hollow shaft 6 are rotatably connected to the upper and lower sides of the mixing box 1 through bearings, a driving assembly is provided at the top of the first hollow shaft 5, a side away from the first hollow shaft 5 and the second hollow shaft 6 is connected to the water tank 2 through a circulation assembly, a side close to the first hollow shaft 5 and the second hollow shaft 6 are both located inside the mixing box 1 and are provided with a hollow stirring assembly, a worm 7 is fixedly connected to the outer surface of the first hollow shaft 5 located inside the mixing box 1, and a box body is fixedly connected to the inner top wall of the mixing box 1 8. A rotating shaft 9 is rotatably connected between the inner walls of the left and right sides of the box body 8 through a bearing, a worm wheel 10 is fixedly connected to the outer surface of the rotating shaft 9, and the worm wheel 10 is meshed with the worm 7. A disc 26 is fixedly connected to both ends of the rotating shaft 9. A side edge of the disc 26 is rotatably connected to a connecting rod 12 through a first pin shaft 11, and the other end of the connecting rod 12 is rotatably connected to a first vertical rod 14 through a second pin shaft 13. The top of the first vertical rod 14 is provided with a second vertical rod 16 through a transmission assembly 15, and a ring 17 is provided at the bottom end of the second vertical rod 16. A scraper plate 18 is fixedly connected to the outer side of the ring 17, and the scraper plate 18 contacts the inner wall of the mixing box 1. A cavity 19 is opened on the side wall of the mixing box 1, and a first electric heating tube 20 is wound inside the cavity 19, and a second electric heating tube 21 is wound inside the water storage tank 2;

[0066] The driving assembly includes a protective shell 22 fixedly connected to the upper surface of the mixing box 1, the inner top wall of the protective shell 22 is fixedly connected to a motor 23, the output end of the motor 23 is fixedly connected to a first gear 24, the top end of the first hollow shaft 5 is located inside the protective shell 22 and is fixedly connected to a second gear 25, and the first gear 24 is meshed with the second gear 25.

[0067] The starter motor 23 is arranged in this way to drive the first gear 24 to rotate. During the rotation process, the first gear 24 cooperates with the second gear 25 to drive the first hollow shaft 5, the stirring assembly and the second hollow shaft 6 to rotate.

[0068] like Figure 1 and Figure 2As shown, in this embodiment, the circulation component includes a circulation pump 201 fixedly connected to the inner bottom wall of the water tank 2, the output end of the circulation pump 201 is fixedly connected to the first connecting pipe 202, the first connecting pipe 202 is connected to the bottom end of the second hollow shaft 6 through a rotating joint, the top end of the first hollow shaft 5 is rotatably connected to the second connecting pipe 203 through a rotating joint, and the other end of the second connecting pipe 203 is connected to the water tank 2.

[0069] The circulating pump 201 is started in this way to pump the hot water out of the water tank 2 and send it to the first connecting pipe 202. Then the hot water flows back into the water tank 2 from the second connecting pipe 203 after passing through the second hollow shaft 6, the stirring component and the first hollow shaft 5. At this time, the heat-absorbing stirring component heats the interior of the mixing box 1.

[0070] like Figure 2 and Figure 5 As shown, in this embodiment, the stirring assembly includes two upper and lower first stirring tubes 601, and a plurality of second stirring tubes 602 are fixedly connected between the two first stirring tubes 601. The upper and lower first stirring tubes 601 are fixedly connected to the first hollow shaft 5 and the second hollow shaft 6 respectively, and the cross-sections of the first stirring tube 601 and the second stirring tube 602 are both elliptical.

[0071] Such an arrangement will not affect the flow of hot water in the stirring component, and can heat the inside of the glue during the stirring process.

[0072] like Figure 2 , Figure 3 and Figure 7 As shown, in this embodiment, the transmission assembly 15 includes an installation box 1501 fixedly connected to the left and right sides of the inner top wall of the mixing box 1, the top ends of the first vertical rod 14 and the second vertical rod 16 penetrate the inner bottom wall of the installation box 1501 and are fixedly connected with the first rack 1502 and the second rack 1503 respectively, the first vertical rod 14 and the second vertical rod 16 are both slidably connected to the installation box 1501, and the inner walls on the left and right sides of the installation box 1501 are rotatably connected with a round rod 1504 through bearings, and the outer surface of the round rod 1504 is fixedly connected with a third gear 1505 and a fourth gear 1506, the third gear 1505 and the fourth gear 1506 are respectively meshed with the first rack 1502 and the second rack 1503, and the third gear 1505 is smaller than the diameter of the fourth gear 1506.

[0073] The disc 26 is arranged in this way, and during the rotation process, it drives the first vertical rod 14 and the first rack 1502 to move up and down through the connecting rod 12. When the first rack 1502 moves upward, it can drive the round rod 1504 and the fourth gear 1506 to rotate by cooperating with the third gear 1505. The fourth gear 1506 can drive the second vertical rod 16, the ring 17 and the scraper plate 18 to move upward when it rotates and cooperates with the second rack 1503. The first rack 1502 drives the second vertical rod 16, the ring 17 and the scraper plate 18 to move downward when it moves downward. Since the third gear 1505 is smaller than the diameter of the fourth gear 1506, the scraper plate 18 has a longer up and down moving distance. At this time, the scraper plate 18 scrapes the raw materials on the inner wall of the mixing box 1 during the movement.

[0074] The technical solution provided by the present invention is that when in use, the water storage tank 2 is filled with clean water, the second electric heating tube 21 heats the water in the water storage tank 2 to a suitable temperature, the circulation pump 201 is started to extract the hot water in the water storage tank 2 and send it to the first connecting tube 202, and then the hot water flows back to the water storage tank 2 from the second connecting tube 203 after passing through the second hollow shaft 6, the first stirring tube 601, the second stirring tube 602 and the first hollow shaft 5. At this time, the heat-absorbing first stirring tube 601 and the second stirring tube 602 heat the interior of the mixing box 1, and the first electric heating tube 20 heats the inner wall of the mixing box 1. Then, the raw materials are poured into the mixing box 1, and the motor 23 is started to drive the first gear 24 to rotate. During the rotation, the first gear 24 cooperates with the second gear 25 to drive the first hollow shaft 5, the stirring assembly and the second hollow shaft 6 to rotate, so that the inside of the glue can be heated during the stirring process, and the inner wall of the mixing box 1 heats the outside of the glue. The cooperation between the two improves the heating rate and uniformity of the glue, and avoids the phenomenon of local solidification.

[0075] At the same time, the first hollow shaft 5 can drive the worm 7 to rotate during the rotation process. The worm 7 can drive the rotating shaft 9 and the disk 26 to rotate in cooperation with the worm wheel 10 during the rotation process. The disk 26 drives the first vertical rod 14 and the first rack 1502 to move up and down through the connecting rod 12 during the rotation process. When the first rack 1502 moves upward, it can drive the round rod 1504 and the fourth gear 1506 to rotate by cooperating with the third gear 1505. The fourth gear 1506 can drive the second vertical rod 16, the circular ring 17 and the scraper plate 18 to move upward by cooperating with the second rack 1503 when rotating. When the rack 1502 moves downward, it can drive the round rod 1504 and the fourth gear 1506 to rotate by cooperating with the third gear 1505. The fourth gear 1506 can drive the second vertical rod 16, the circular ring 17 and the scraper plate 18 to move downward when rotating in cooperation with the second rack 1503. Since the third gear 1505 is smaller than the diameter of the fourth gear 1506, the scraper plate 18 has a longer up and down movement distance. At this time, the scraper plate 18 scrapes the raw materials on the inner wall of the mixing box 1 during the movement, avoiding the glue from being in contact with the high-temperature inner wall of the mixing box 1 for a long time to cause an oxidation reaction, thereby improving the production quality of the glue.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A device for preparing antistatic water-based adhesive material for lithium-ion batteries, characterized in that: The invention relates to a mixing device for preparing an antistatic water-based adhesive material for lithium-ion batteries, wherein the mixing device comprises a mixing box (1) and a water tank (2), wherein a feed port (3) and a discharge pipe (4) are respectively arranged on the upper and lower sides of the mixing box (1), wherein a first hollow shaft (5) and a second hollow shaft (6) are rotatably connected to the upper and lower sides of the mixing box (1) via bearings, wherein a driving component is arranged at the top end of the first hollow shaft (5), wherein the side away from the first hollow shaft (5) and the second hollow shaft (6) is connected to the water tank (2) via a circulation component, wherein the side close to the first hollow shaft (5) and the second hollow shaft (6) is both located inside the mixing box (1) and is provided with a hollow stirring component, wherein a worm (7) is fixedly connected to the outer surface of the first hollow shaft (5) located inside the mixing box (1), wherein the inner top wall of the mixing box (1) is fixedly connected to a box body (8), wherein a rotating shaft is rotatably connected between the inner walls on the left and right sides of the box body (8) via a bearing. (9), a worm wheel (10) is fixedly connected to the outer surface of the rotating shaft (9), the worm wheel (10) is meshingly connected to the worm (7), the left and right ends of the rotating shaft (9) are fixedly connected to disks (26), one side edge of the disk (26) is rotatably connected to a connecting rod (12) via a first pin shaft (11), the other end of the connecting rod (12) is rotatably connected to a first vertical rod (14) via a second pin shaft (13), the top end of the first vertical rod (14) is rotatably connected to the first vertical rod (14) via a transmission The moving assembly (15) is provided with a second vertical rod (16), a circular ring (17) is provided at the bottom end of the second vertical rod (16), a scraper plate (18) is fixedly connected to the outer side of the circular ring (17), the scraper plate (18) is in contact with the inner wall of the mixing box (1), a cavity (19) is provided on the side wall of the mixing box (1), a first electric heating tube (20) is wound inside the cavity (19), and a second electric heating tube (21) is wound inside the water storage tank (2); The driving assembly comprises a protective shell (22) fixedly connected to the upper surface of the mixing box (1); a motor (23) is fixedly connected to the inner top wall of the protective shell (22); a first gear (24) is fixedly connected to the output end of the motor (23); a top end of the first hollow shaft (5) is located inside the protective shell (22) and is fixedly connected to the second gear (25); the first gear (24) is meshingly connected to the second gear (25); The transmission assembly (15) comprises an installation box (1501) fixedly connected to the left and right sides of the inner top wall of the mixing box (1); the top ends of the first vertical rod (14) and the second vertical rod (16) penetrate the inner bottom wall of the installation box (1501) and are fixedly connected to the first rack (1502) and the second rack (1503) respectively; the first vertical rod (14) and the second vertical rod (16) are slidably connected to the installation box (1501); the inner walls on the left and right sides of the installation box (1501) are rotatably connected to round rods (1504) via bearings; the outer surfaces of the round rods (1504) are fixedly connected to the third gear (1505) and the fourth gear (1506); the third gear (1505) and the fourth gear (1506) are meshedly connected to the first rack (1502) and the second rack (1503) respectively; the third gear (1505) is smaller than the diameter of the fourth gear (1506).

2. The device for preparing the antistatic water-based adhesive material for lithium-ion batteries according to claim 1, characterized in that: The circulation assembly comprises a circulation pump (201) fixedly connected to the inner bottom wall of the water storage tank (2); the output end of the circulation pump (201) is fixedly connected to a first connecting pipe (202); the first connecting pipe (202) is connected to the bottom end of the second hollow shaft (6) via a rotating joint; the top end of the first hollow shaft (5) is rotatably connected to a second connecting pipe (203) via a rotating joint; the other end of the second connecting pipe (203) is connected to the water storage tank (2).

3. The device for preparing the antistatic aqueous adhesive material for lithium ion batteries according to claim 2, characterized in that: The stirring assembly comprises two upper and lower first stirring tubes (601), a plurality of second stirring tubes (602) being fixedly connected between the two first stirring tubes (601), the upper and lower two first stirring tubes (601) being fixedly connected to the first hollow shaft (5) and the second hollow shaft (6), respectively, and the cross sections of the first stirring tube (601) and the second stirring tube (602) are both elliptical.

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