A method and device for preparing a positive electrode precursor of a sodium ion battery

Abstract

The present invention belongs to the technical field of battery production, and discloses a method and device for preparing a positive electrode precursor of a sodium ion battery; comprising the following steps: S1: preparing a metal salt solution, liquid alkali, and ammonia solution of a certain concentration; S2: passing the metal salt solution, liquid alkali, and ammonia solution prepared in S1 into a reactor through a liquid inlet pipe. The present invention adopts special process conditions to prepare a precursor with a porous structure, which is conducive to the diffusion of sodium salt in the precursor particles during the sintering process, and the reaction is more sufficient. The coating can effectively penetrate around the primary particles to form a good conductive network and improve the electrochemical properties of the material; by setting a top water collection component, water vapor will be generated during the drying process of the material, and the water vapor will liquefy into liquid water when it reaches the top of the drying barrel. The water will be collected by multiple water collection cones, and the water will drip into the water collection bowl through the drip cone at the bottom of the water collection membrane to achieve water collection.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and more specifically, to a method and device for preparing a positive electrode precursor of a sodium ion battery. Background Art

[0002] Sodium-ion batteries mainly rely on the movement of sodium ions between the positive and negative electrodes to work, which is similar to the working principle of lithium-ion batteries. Compared with lithium batteries, sodium batteries have significant cost advantages, and are expected to achieve accelerated penetration when lithium prices are high. Sodium resources are abundant and evenly distributed, and sodium battery raw materials have cost advantages and sufficient supply.

[0003] At present, high-energy ball milling is a very common process for preparing positive electrode materials for sodium ion batteries. This method is simple to operate and has strong adaptability to raw materials, but it is difficult to achieve nano-level mixing between raw materials, it is easy to introduce impurities, and it consumes a lot of energy. In the process of producing positive electrode precursor materials for sodium ion batteries, a special drying device is required to dry the produced wet precursor materials. Water vapor will be generated in the process of drying the materials. When the water vapor hits the inner wall of the top of the device, it will liquefy into liquid water. The liquid water will drip back into the material, affecting the drying effect of the positive electrode precursor materials for sodium ion batteries. However, the current drying device cannot collect the water liquefied at the top of the device during the drying process.

[0004] In view of this, the present application proposes a method and device for preparing a positive electrode precursor for a sodium ion battery. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a method and device for preparing a positive electrode precursor for a sodium ion battery.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for preparing a positive electrode precursor for a sodium ion battery, comprising the following steps:

[0007] S1: prepare a certain concentration of metal salt solution, liquid alkali and ammonia solution;

[0008] S2: The metal salt solution, liquid alkali and ammonia solution prepared in S1 are simultaneously fed into the reactor through a liquid inlet pipe;

[0009] S3: dropping a dispersant into the reactor, and mixing and stirring the mixed liquid in the reactor until the reaction is completed;

[0010] S4: The materials in the aging tank are circulated and linked with the materials in the reactor. When the liquid level in the aging tank rises to a certain level, the materials in the aging tank are transported to the filter press buffer tank;

[0011] S5: washing the matured reactant, and placing the washed reactant into a drying device for drying, thereby obtaining a cobalt-free positive electrode precursor.

[0012] A sodium ion battery positive electrode precursor preparation device comprises a drying barrel, a feed pipe and a discharge pipe connected and installed at the top and bottom of the drying barrel, and a stirring assembly arranged on the drying barrel;

[0013] A heating plate for heating the inside of the drying barrel is arranged inside the side wall of the drying barrel, valves are installed in the feeding pipe and the discharging pipe, and the stirring assembly includes a motor fixed to the top of the drying barrel through a bracket plate, the output shaft of the motor is fixed to a rotating shaft rotatably connected to the top of the drying barrel, and a plurality of stirring rods are evenly fixed to the surface of the rotating shaft;

[0014] The drying barrel is provided with a water collecting mechanism and a hot air input assembly. The water collecting mechanism comprises a top water collecting assembly and a side wall water collecting assembly, which are respectively used to collect water generated by liquefaction on the top and side walls of the drying barrel. The hot air input assembly is used to input hot air into the drying barrel to accelerate the drying of the material.

[0015] Furthermore, the top water collecting component includes a plurality of water collecting cones fixedly connected to the top inner wall of the drying barrel, the surface of the water collecting cone is fixedly connected with a water collecting membrane via a connecting rod, a plurality of dripping cones are arranged at the bottom end of the water collecting membrane, the bottom end of the water collecting cone is fixedly connected with a fixing column, the bottom end of the fixing column is fixedly connected with a water collecting bowl located directly below the dripping cone, a water outlet is provided on the water collecting bowl, a water outlet pipe is fixedly connected to the water collecting bowl, the water outlet pipe is connected with the inside of the water collecting bowl through the water outlet, the bottom of the water collecting bowl is covered with a water absorbing sponge, and a squeezing component for squeezing the water absorbing sponge is provided in the drying barrel.

[0016] Furthermore, the extrusion assembly includes an extrusion hood rotatably connected to the water collecting bowl through a fixed plate and a pin shaft, two connecting columns are fixedly connected to the bottom end of the extrusion hood, a first connecting line is fixedly connected between the two connecting columns, a second connecting line is fixedly connected to the first connecting line, a plurality of limiting cavities are opened on the top of the drying barrel, one end of the second connecting line passes through the water collecting membrane, the water collecting cone and the drying barrel in sequence and is fixedly connected to a first magnet, the first magnet is slidably connected in the limiting cavity, a first spring is fixedly connected between the first magnet and the inner wall of the limiting cavity, an electromagnet is fixedly connected to one end of the limiting cavity and is opposite to the first magnet, and a vibration assembly for vibrating the water collecting membrane is provided on the drying barrel.

[0017] Furthermore, the vibration assembly includes two rotating rods fixedly connected to the top surface of the rotating shaft, and two second magnets are fixedly connected to the rotating rods. The second magnets have opposite polarity to the surface directly opposite to the first magnet. The water collecting membrane is fixedly connected to a third connecting line that passes through the water collecting cone and the top of the drying barrel. The third connecting line is in a taut state, and one end of the third connecting line is fixedly connected to a connecting block located in the limiting cavity.

[0018] Furthermore, the extrusion hood is provided with a plurality of openings for leaking water, the extrusion hood is provided with a through opening, the inner wall of the through opening is fixedly connected with a toggle block, and the water outlet pipe is located on the track where the through opening and the toggle block rotate around the pin of the extrusion hood.

[0019] Furthermore, the side wall water collecting assembly includes a water collecting ring fixedly connected to the inner wall of the drying barrel, the cross section of the water collecting ring is U-shaped, the side of the cross section of the water collecting ring close to the inner wall of the drying barrel is set as an inclined surface, the bottom of the water collecting ring is connected and fixedly connected with a plurality of arc tubes passing through the side wall of the drying barrel, and an impact assembly for impacting the drying barrel is provided in the drying barrel.

[0020] Furthermore, the impact assembly includes a horizontal block fixedly connected to the tops of two stirring rods, a second spring is fixedly connected to the inner wall of the horizontal block, a moving block is fixedly connected to one end of the second spring, a moving column for sliding and observing the horizontal block is fixedly connected to one side wall of the moving block, an impact block is fixedly connected to one end of the moving column, and a plurality of arc blocks are fixedly connected to the inner wall of the drying barrel, and the arc blocks are located on the trajectory of the impact block rotating around the rotating axis.

[0021] Furthermore, the hot air input component includes an air inlet pipe fixedly connected to the discharge pipe, one end of the air inlet pipe is connected to an external hot air blower, the other end of the air inlet pipe is rotatably connected to the bottom end of the rotating shaft through a bearing, an air inlet cavity connected to the air inlet pipe is defined in the rotating shaft, a cavity connected to the air inlet cavity is defined in the stirring rod, a plurality of air outlets are defined at the bottom of the stirring rod, an air outlet pipe connected to the cavity through the air outlet is fixedly connected to the bottom of the stirring rod, and a sealing component for sealing the air outlet pipe is provided in the air outlet pipe.

[0022] Furthermore, the blocking assembly includes a fixed seat fixed in the air outlet pipe, a blocking ball is rotatably connected to the middle part of the fixed seat, an arc-shaped air outlet channel is opened in the blocking ball, the heights of both ends of the air outlet channel are lower than the top of the fixed seat, an inclined connecting piece is fixed on the surface of the blocking ball, and a third spring is fixed between the connecting piece and the inner wall of the air outlet pipe.

[0023] The technical effects and advantages of the method and device for preparing a positive electrode precursor for a sodium ion battery of the present invention are as follows:

[0024] (1) By adopting special process conditions, a porous structured precursor is prepared. This precursor is conducive to the diffusion of sodium salt in the precursor particles during sintering, making the reaction more complete. The coating can effectively penetrate around the primary particles to form a good conductive network, thereby improving the electrochemical properties of the material.

[0025] (2) By setting up a top water collection component, water vapor will be generated during the material drying process. When the water vapor reaches the top of the drying barrel, it will liquefy into liquid water. The water will be collected by multiple water collection cones and drip into the water collection bowl through the drip cone at the bottom of the water collection membrane. The collected water in the water collection bowl will flow out of the drying barrel from the outlet pipe to prevent the liquid water from dripping back into the material and affecting the drying effect of the material. The absorbent sponge can absorb the liquid water generated at the bottom of the water collection bowl to prevent the water from dripping. By setting up a vibration component, during the drying process, the motor drives the rotating shaft and the stirring rod to stir the material to enhance the drying effect. The rotating shaft can drive the rotating rod and the second magnet to rotate. When the second magnet approaches the first magnet, the first magnet will be attracted to move toward the rotating shaft. The first magnet will contact and hit the connecting block to generate vibration. The vibration is transmitted to the water collection membrane through the third connecting line, causing the water on the water collection membrane to slide down quickly and drip.

[0026] (3) By setting up an extrusion component, when the material is dried, the material is discharged from the drying barrel. Before the drying barrel is used next time, it is necessary to remove the water in the water-absorbing sponge at the bottom of the water collection bowl, so that the electromagnet is energized and has magnetism. The electromagnet has an attraction effect on the first magnet, and the first magnet moves away from the rotating shaft. The first spring is stretched, and the first magnet pulls the extrusion cover to move through the second connecting line and the third connecting line, so that the extrusion cover rotates around the pin shaft. The extrusion cover squeezes the water-absorbing sponge to squeeze out the water in the water-absorbing sponge, which is convenient for the subsequent water generated at the bottom of the water collection bowl during the material drying process.

[0027] (4) By setting up a side wall water collecting assembly and an impact assembly, during the drying process, part of the water vapor will reach the side wall of the drying barrel and liquefy into liquid water. The water will flow down along the side wall. The water collecting ring can collect the water generated on the side wall of the drying barrel. After the water enters the water collecting ring, it is discharged to the outside of the drying barrel through the arc pipe. During the rotation of the stirring rod, the impact block will contact the arc block, and the arc block will press the impact block toward the direction of the rotating shaft. The second spring is compressed. When the arc block is not in contact with the impact block, under the action of the second spring, the impact block suddenly hits the inner wall of the drying barrel. The impact generates vibration, and the vibration can cause the liquid water generated on the inner wall of the drying barrel to slide down quickly.

[0028] (5) By setting a hot air input component, an external hot air blower is used to deliver hot air to the air inlet cavity of the rotating shaft through the air inlet pipe. The hot air is discharged from the air outlet pipe through the cavity and the air outlet. The hot air is blown to the inside of the drying barrel, which can accelerate the drying of the material. By setting a blocking component, when there is no hot air blowing into the drying barrel, the blocking ball will block the air outlet pipe, which can prevent the material or water from entering the cavity from the air outlet pipe. When there is hot air, the hot air will blow to the connecting piece on the blocking ball, the third spring is compressed, and the connecting piece drives the blocking ball to rotate, so that the hot air can be discharged from the air outlet pipe through the air outlet channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a cross-sectional schematic diagram of the drying barrel in the present invention;

[0031] Figure 3 It is a schematic diagram of the top water collecting component and the extrusion component in the present invention;

[0032] Figure 4 It is a schematic cross-sectional view of a water collecting cone in the present invention;

[0033] Figure 5 For the present invention Figure 2 The enlarged schematic diagram at A in the middle;

[0034] Figure 6 For the present invention Figure 2 The enlarged schematic diagram of point B in the middle;

[0035] Figure 7 It is a cross-sectional schematic diagram of a horizontal block in the present invention;

[0036] Figure 8 It is a cross-sectional schematic diagram of the air outlet pipe in the present invention.

[0037] In the figure:

[0038] 1. Drying barrel; 2. Feed pipe; 3. Discharge pipe; 4. Bracket plate; 5. Motor; 6. Rotating shaft; 7. Stirring rod; 8. Water collecting cone; 9. Water collecting membrane; 10. Drip cone; 11. Fixed column; 12. Water collecting bowl; 13. Water outlet; 14. Water outlet pipe; 15. Water absorbing sponge; 16. Extrusion cover; 17. Connecting column; 18. First connecting line; 19. Second connecting line; 20. Limiting cavity; 21. First magnet; 22. First spring; 23. Electromagnet; 24. Rotating rod; 25. The second magnet; 26. The third connecting line; 27. The connecting block; 28. The opening; 29. ​​The toggle block; 30. The water collecting ring; 31. The inclined plane; 32. The arc tube; 33. The horizontal block; 34. The second spring; 35. The moving block; 36. The moving column; 37. The impact block; 38. The arc block; 39. The air inlet pipe; 40. The air inlet cavity; 41. The cavity; 42. The air outlet; 43. The air outlet pipe; 44. The fixing seat; 45. The blocking ball; 46. The air outlet channel; 47. The connecting piece; 48. The third spring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0040] A method for preparing a positive electrode precursor for a sodium ion battery comprises the following steps:

[0041] S1: prepare a certain concentration of metal salt solution, liquid alkali and ammonia solution;

[0042] S2: The metal salt solution, liquid alkali and ammonia solution prepared in S1 are simultaneously fed into the reactor through a liquid inlet pipe;

[0043] S3: dropping a dispersant into the reactor, and mixing and stirring the mixed liquid in the reactor until the reaction is completed;

[0044] S4: The materials in the aging tank are circulated and linked with the materials in the reactor. When the liquid level in the aging tank rises to a certain level, the materials in the aging tank are transported to the filter press buffer tank;

[0045] S5: washing the matured reactant, and placing the washed reactant into a drying device for drying, thereby obtaining a cobalt-free positive electrode precursor.

[0046] Reference Figure 1-Figure 8 , a sodium ion battery positive electrode precursor preparation device, comprising a drying barrel 1, a feed pipe 2 and a discharge pipe 3 connected and installed at the top and bottom of the drying barrel 1, and a stirring assembly arranged on the drying barrel 1;

[0047] A heating plate for heating the inside of the drying barrel 1 is arranged inside the side wall of the drying barrel 1, valves are installed in the feeding pipe 2 and the discharging pipe 3, and the stirring assembly includes a motor 5 fixed to the top of the drying barrel 1 through a bracket plate 4, the output shaft of the motor 5 is fixed to a rotating shaft 6 rotatably connected to the top of the drying barrel 1, and a plurality of stirring rods 7 are evenly fixed to the surface of the rotating shaft 6;

[0048] The drying barrel 1 is provided with a water collecting mechanism and a hot air input component. The water collecting mechanism includes a top water collecting component and a side wall water collecting component, which are respectively used to collect water generated by liquefaction on the top and side walls of the drying barrel 1. The hot air input component is used to input hot air into the drying barrel 1 to accelerate the drying of the material. When in use, the material to be dried is put into the drying barrel 1 from the feeding pipe 2, and the heating plate in the drying barrel 1 is turned on. The heating plate can increase the temperature in the drying barrel 1, which is conducive to the rapid drying of the material. The motor 5 is started, and the motor 5 drives the rotating shaft 6 to rotate. The rotating shaft 6 drives the stirring rod 7 to rotate. The stirring rod 7 stirs the material. Stirring can accelerate the drying of the material. After drying is completed, the material is discharged from the drying barrel 1 from the discharge pipe 3.

[0049] Reference Figure 2 , Figure 3 and Figure 4The top water collection component includes a plurality of water collection cones 8 fixedly connected to the top inner wall of the drying barrel 1, the surface of the water collection cone 8 is fixedly connected to a water collection membrane 9 through a connecting rod, and a plurality of dripping cones 10 are arranged at the bottom end of the water collection cone 8, a fixing column 11 is fixedly connected to the bottom end of the fixing column 11, and a water collection bowl 12 located directly below the dripping cone 10 is fixedly connected, and a water outlet 13 is opened on the water collection bowl 12, and a water outlet pipe 14 is fixedly connected to the water collection bowl 12, and the water outlet pipe 14 is connected to the inside of the water collection bowl 12 through the water outlet 13, and the bottom of the water collection bowl 12 is covered and fixedly connected with a water absorbing sponge 15, and the drying barrel 1 is provided with a water-absorbing sponge for squeezing and absorbing the water. The extrusion component of the water sponge 15; a large amount of water vapor will be generated during the material drying process, and part of the water vapor will float upward to the water collecting cone 8 on the inner wall of the top of the drying barrel 1, and the water vapor will liquefy into liquid water. The water collecting cone 8 will collect the liquid water, and the liquid water will adhere to the water collecting membrane 9 and slide down along the water collecting membrane 9. The water will drip from the dripping cone 10 at the bottom of the water collecting membrane 9 into the water collecting bowl 12, and the water in the water collecting bowl 12 will enter the water outlet pipe 14 through the water outlet 13, and the water will be discharged from the drying barrel 1, and the water-absorbing sponge 15 at the bottom of the water collecting bowl 12 will absorb the liquefied water at the bottom of the water collecting bowl 12 to prevent the liquefied water from dripping, thereby achieving the purpose of collecting the liquid water generated at the top of the drying barrel 1.

[0050] Reference Figure 3 , Figure 4 and Figure 5The extrusion assembly includes an extrusion cover 16 rotatably connected to the water collecting bowl 12 through a fixed plate and a pin shaft, two connecting columns 17 are fixedly connected to the bottom end of the extrusion cover 16, a first connecting line 18 is fixedly connected between the two connecting columns 17, a second connecting line 19 is fixedly connected to the first connecting line 18, a plurality of limiting cavities 20 are opened on the top of the drying barrel 1, one end of the second connecting line 19 passes through the water collecting membrane 9, the water collecting cone 8 and the drying barrel 1 in sequence and is fixedly connected to a first magnet 21, the first magnet 21 is slidably connected in the limiting cavity 20, a first spring 22 is fixedly connected between the first magnet 21 and the inner wall of the limiting cavity 20, an electromagnet 23 facing the first magnet 21 is fixedly connected to one end of the limiting cavity 20, and a vibration component for vibrating the water collecting membrane 9 is provided on the drying barrel 1; when the material is dried, the bottom of the water collecting bowl 12 The water-absorbing sponge 15 absorbs a lot of water. Before the material is dried next time, the water in the water-absorbing sponge 15 needs to be removed, so that the electromagnet 23 is energized to generate magnetism. The electromagnet 23 will attract the first magnet 21 to move away from the rotating shaft 6, and the first spring 22 is stretched. The first magnet 21 pulls the connecting column 17 through the second connecting line 19 and the first connecting line 18. The connecting column 17 drives the extrusion cover 16 to move, so that the extrusion cover 16 rotates around the pin shaft, and the extrusion cover 16 covers the water-absorbing sponge 15. As the first magnet 21 continues to move, the extrusion cover 16 squeezes the water-absorbing sponge 15 to squeeze out the water in the water-absorbing sponge 15, so that the water-absorbing sponge 15 can continue to absorb the water generated at the bottom of the water collection bowl 12 next time. The electromagnet 23 loses its magnetism after power is turned off. Under the action of the first spring 22 and gravity, the first magnet 21 and the extrusion cover 16 return to their original positions.

[0051] Reference Figure 2 , Figure 4 and Figure 5The vibration assembly includes two rotating rods 24 fixedly connected to the top surface of the rotating shaft 6, and two second magnets 25 are fixedly connected to the rotating rods 24. The second magnets 25 have opposite polarities to the surface of the first magnet 21 that is closest to them. A third connecting line 26 that passes through the water collecting cone 8 and the top of the drying barrel 1 is fixedly connected to the water collecting membrane 9. The third connecting line 26 is in a taut state, and one end of the third connecting line 26 is fixedly connected to a connecting block 27 located in the limiting cavity 20. When the motor 5 drives the rotating shaft 6 to rotate, the rotating shaft 6 can drive the rotating rod 24 to rotate, and the rotating rod 24 drives the second magnet 25 to rotate. When the second magnet When the second magnet 25 is close to the corresponding first magnet 21, the second magnet 25 can attract the first magnet 21 to move toward the direction of the rotating shaft 6, the first spring 22 is compressed, and the first magnet 21 will contact and push the connecting block 27 during the movement. The connecting block 27 pulls the water collecting membrane 9 through the third connecting line 26. When the second magnet 25 is away from the first magnet 21, under the action of the first spring 22, the first magnet 21 and the connecting block 27 return to their original positions. The connecting block 27 will vibrate during the process of being pushed and reset. The vibration can be transmitted to the water collecting membrane 9 through the third connecting line 26. The vibration can make the water attached to the water collecting membrane 9 slide down quickly.

[0052] Reference Figure 3 and Figure 4 The squeezing cover 16 is provided with a plurality of openings for leaking water, and a through-port 28 is provided on the squeezing cover 16. A toggle block 29 is fixedly connected to the inner wall of the through-port 28. The water outlet pipe 14 is located on the track where the through-port 28 and the toggle block 29 rotate around the pin of the squeezing cover 16. When the squeezing cover 16 squeezes the water-absorbing sponge 15, the water in the water-absorbing sponge 15 is squeezed out, and the water flows down from the opening and the through-port 28 on the squeezing cover 16. When the squeezing cover 16 rotates, the water outlet pipe 14 enters the through-port 28. The through-port 28 prevents the water outlet pipe 14 from hindering the rotation of the squeezing cover 16. When the water outlet pipe 14 enters the through-port 28, the toggle block 29 contacts the water outlet pipe 14 and toggle the water outlet pipe 14, causing the water outlet pipe 14 to vibrate, so that the water retained in the water outlet pipe 14 can be quickly discharged.

[0053] Reference Figure 2 and Figure 6 The side wall water collecting assembly includes a water collecting ring 30 fixedly connected to the inner wall of the drying barrel 1, the cross section of the water collecting ring 30 is U-shaped, and the side of the cross section of the water collecting ring 30 close to the inner wall of the drying barrel 1 is set as an inclined surface 31, and the bottom of the water collecting ring 30 is connected and fixed with a plurality of arc tubes 32 passing through the side wall of the drying barrel 1, and the drying barrel 1 is provided with an impact assembly for impacting the drying barrel 1; during the drying process, part of the water vapor will liquefy into liquid water at the side wall of the drying barrel 1, and the water will flow down along the inner wall of the drying barrel 1. By setting the inclined surface 31, the water on the inner wall of the drying barrel 1 will flow into the water collecting ring 30, and the water in the water collecting ring 30 will flow out of the drying barrel 1 through the arc tube 32.

[0054] Reference Figure 2 and Figure 7 The impact assembly includes a horizontal block 33 fixedly connected to the top of two stirring rods 7, a second spring 34 is fixedly connected to the inner wall of the horizontal block 33, a moving block 35 is fixedly connected to one end of the second spring 34, a moving column 36 for sliding and observing the horizontal block 33 is fixedly connected to one side wall of the moving block 35, a striking block 37 is fixedly connected to one end of the moving column 36, and a plurality of arc blocks 38 are fixedly connected to the inner wall of the drying barrel 1, and the arc blocks 38 are located on the trajectory of the striking block 37 rotating around the rotating shaft 6; during the rotation of the stirring rod 7, the stirring rod 7 drives the The cross block 33 and the impact block 37 rotate, and the impact block 37 passes through a plurality of arc blocks 38 during the rotation. When the impact block 37 contacts the arc block 38, the arc block 38 presses the impact block 37 to move toward the direction close to the rotating shaft 6. The impact block 37 drives the moving column 36 and the moving block 35 to move, and the second spring 34 is compressed. When the arc block 38 does not contact the impact block 37, under the action of the second spring 34, the impact block 37 suddenly hits the inner wall of the drying barrel 1, and the impact generates vibration, which can make the water on the inner wall of the drying barrel 1 slide down quickly.

[0055] Reference Figure 2 and Figure 8 The hot air input assembly includes an air inlet pipe 39 fixedly connected to the discharge pipe 3, one end of the air inlet pipe 39 is connected to an external hot air blower, and the other end of the air inlet pipe 39 is rotatably connected to the bottom end of the rotating shaft 6 through a bearing, and an air inlet cavity 40 connected to the air inlet pipe 39 is provided in the rotating shaft 6, and a cavity 41 connected to the air inlet cavity 40 is provided in the stirring rod 7, and a plurality of air outlets 42 are provided at the bottom of the stirring rod 7, and a plurality of air outlets 42 are fixedly connected to the bottom of the stirring rod 7. The air outlet pipe 43 is provided with a blocking component for blocking the air outlet pipe 43; during the material drying process, the heating plate is located in the side wall of the drying barrel 1, the material near the side wall has a better drying effect, and the material located in the center of the drying barrel 1 has a poor drying effect, and hot air is introduced into the air inlet pipe 39 through an external hot air blower, and the hot air enters the cavity 41 of the stirring rod 7 through the air inlet cavity 40. The hot air in the cavity 41 is discharged from the air outlet pipe 43 through the air outlet 42, and the hot air is blown into the material to accelerate the drying of the material.

[0056] Reference Figure 8The blocking assembly includes a fixed seat 44 fixedly connected to the air outlet pipe 43, a blocking ball 45 is rotatably connected to the middle part of the fixed seat 44, an arc-shaped air outlet channel 46 is opened in the blocking ball 45, and the heights of both ends of the air outlet channel 46 are lower than the top of the fixed seat 44. An inclined connecting piece 47 is fixedly connected to the surface of the blocking ball 45, and a third spring 48 is fixedly connected between the connecting piece 47 and the inner wall of the air outlet pipe 43; when the material is put into the drying barrel 1, due to the action of the blocking ball 45, the material and water cannot enter the cavity 41 from the air outlet pipe 43. When hot air needs to be introduced into the drying barrel 1 and the hot air blows onto the connecting piece 47, the connecting piece 47 is blown, the third spring 48 is compressed, and the connecting piece 47 drives the blocking ball 45 to rotate in the fixed seat 44. The hot air can be discharged from the air outlet pipe 43 from the air outlet channel 46 when the blocking ball 45 rotates.

[0057] Working principle: When in use, the material to be dried is put into the drying barrel 1 from the feed pipe 2, and the heating plate in the drying barrel 1 is turned on. The heating plate can increase the temperature in the drying barrel 1, which is conducive to the rapid drying of the material. The motor 5 is started, and the motor 5 drives the rotating shaft 6 to rotate. The rotating shaft 6 drives the stirring rod 7 to rotate. The stirring rod 7 stirs the material, and stirring can accelerate the drying of the material. After drying, the material is discharged from the drying barrel 1 from the discharge pipe 3; a large amount of water vapor will be generated in the process of material drying, and part of the water vapor will float upward to the water collecting cone 8 on the top inner wall of the drying barrel 1. The water vapor will liquefy into liquid water, and the water collecting cone 8 will collect the liquid water. The liquid water will adhere to the water collecting membrane 9 and flow along the The water collecting film 9 slides downward, and the water will drip from the drip cone 10 at the bottom of the water collecting film 9 into the water collecting bowl 12. The water in the water collecting bowl 12 enters the water outlet pipe 14 through the water outlet 13, and the water is discharged from the drying barrel 1. The water-absorbing sponge 15 at the bottom of the water collecting bowl 12 will absorb the liquefied water at the bottom of the water collecting bowl 12 to prevent the liquefied water from dripping, thereby achieving the purpose of collecting the liquid water generated at the top of the drying barrel 1; when the material is dried, the water-absorbing sponge 15 at the bottom of the water collecting bowl 12 absorbs more water. Before the material is dried next time, it is necessary to remove the water in the water-absorbing sponge 15, so that the electromagnet 23 is energized to generate magnetism, and the electromagnet 23 will attract the first magnet 21 to move away from the rotating shaft 6. The first spring 22 is stretched, the first magnet 21 pulls the connecting column 17 through the second connecting line 19 and the first connecting line 18, and the connecting column 17 drives the extrusion cover 16 to move, so that the extrusion cover 16 rotates around the pin shaft, and the extrusion cover 16 will cover the water-absorbing sponge 15. As the first magnet 21 continues to move, the extrusion cover 16 squeezes the water-absorbing sponge 15 to squeeze out the water in the water-absorbing sponge 15, so that the water-absorbing sponge 15 can continue to absorb the water generated at the bottom of the water collection bowl 12 next time. The electromagnet 23 loses its magnetism after power is turned off. Under the action of the first spring 22 and gravity, the first magnet 21 and the extrusion cover 16 return to their original positions; when the motor 5 drives the rotating shaft 6 to rotate, the rotating shaft 6 can drive the rotating rod 24 to rotate , the rotating rod 24 drives the second magnet 25 to rotate. When the second magnet 25 is close to the corresponding first magnet 21, the second magnet 25 can attract the first magnet 21 to move toward the rotating shaft 6. The first spring 22 is compressed. The first magnet 21 will contact and push the connecting block 27 during the movement. The connecting block 27 pulls the water collecting membrane 9 through the third connecting line 26. When the second magnet 25 is away from the first magnet 21, under the action of the first spring 22, the first magnet 21 and the connecting block 27 return to their original positions. The connecting block 27 will vibrate during the process of being pushed and reset. The vibration can be transmitted to the water collecting membrane 9 through the third connecting line 26. The vibration can make the water attached to the water collecting membrane 9 slide down quickly;When the squeezing cover 16 squeezes the water-absorbing sponge 15, the water in the water-absorbing sponge 15 is squeezed out, and the water flows down from the opening and the through-port 28 on the squeezing cover 16. When the squeezing cover 16 rotates, the water outlet pipe 14 enters the through-port 28, and the through-port 28 prevents the water outlet pipe 14 from hindering the rotation of the squeezing cover 16. When the water outlet pipe 14 enters the through-port 28, the toggle block 29 contacts the water outlet pipe 14 and toggle the water outlet pipe 14, causing the water outlet pipe 14 to vibrate, so that the water retained in the water outlet pipe 14 can be quickly discharged. In the drying process, part of the water vapor is The water will liquefy into liquid water at the side wall of the drying barrel 1, and the water will flow down along the inner wall of the drying barrel 1. By setting the inclined surface 31, the water on the inner wall of the drying barrel 1 will flow into the water collecting ring 30, and the water in the water collecting ring 30 will flow out of the drying barrel 1 through the arc tube 32; during the rotation of the stirring rod 7, the stirring rod 7 drives the cross block 33 and the impact block 37 to rotate, and the impact block 37 will pass through a plurality of arc blocks 38 during the rotation. When the impact block 37 contacts the arc block 38, the arc block 38 will press the impact block 37 to move toward the direction close to the rotating shaft 6, and the impact block 37 drives the moving column 36 and the moving block 35 move, the second spring 34 is compressed, and when the arc block 38 is not in contact with the impact block 37, under the action of the second spring 34, the impact block 37 suddenly impacts the inner wall of the drying barrel 1, and the impact generates vibration, which can make the water on the inner wall of the drying barrel 1 slide down quickly; during the material drying process, the heating plate is located inside the side wall of the drying barrel 1, the material close to the side wall has a better drying effect, and the material located in the center of the drying barrel 1 has a poor drying effect, and hot air is introduced into the air inlet pipe 39 through the external hot air blower, and the hot air enters the stirring rod 7 through the air inlet cavity 40. In the cavity 41, the hot air in the cavity 41 is discharged from the air outlet 43 through the air outlet 42, and the hot air blows into the material to accelerate the drying of the material; when the material is put into the drying barrel 1, due to the effect of the blocking ball 45, the material and water cannot enter the cavity 41 from the air outlet 43. When it is necessary to introduce hot air into the drying barrel 1 and the hot air blows onto the connecting piece 47, the connecting piece 47 is blown, the third spring 48 is compressed, and the connecting piece 47 drives the blocking ball 45 to rotate in the fixing seat 44. The hot air can be discharged from the air outlet 43 from the air outlet channel 46 when the blocking ball 45 rotates. ;

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0059] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sodium ion battery positive electrode precursor preparation device, characterized in that: It comprises a drying barrel (1), a feeding pipe (2) and a discharging pipe (3) which are connected and installed at the top and bottom of the drying barrel (1), and a stirring assembly arranged on the drying barrel (1); A heating plate for heating the inside of the drying barrel (1) is arranged inside the side wall of the drying barrel (1); valves are installed inside the feed pipe (2) and the discharge pipe (3); the stirring assembly comprises a motor (5) fixedly connected to the top of the drying barrel (1) through a bracket plate (4); the output shaft of the motor (5) is fixedly connected to a rotating shaft (6) rotatably connected to the top of the drying barrel (1); and a plurality of stirring rods (7) are evenly fixedly connected to the surface of the rotating shaft (6); The drying barrel (1) is provided with a water collecting mechanism and a hot air input assembly. The water collecting mechanism comprises a top water collecting assembly and a side wall water collecting assembly, which are respectively used to collect water generated by liquefaction at the top and side walls of the drying barrel (1). The hot air input assembly is used to input hot air into the drying barrel (1) to accelerate the drying of the material. The top water collection component comprises a plurality of water collection cones (8) fixedly connected to the top inner wall of the drying barrel (1); the surface of the water collection cone (8) is fixedly connected to a water collection membrane (9) via a connecting rod; the bottom end of the water collection membrane (9) is provided with a plurality of dripping cones (10); the bottom end of the water collection cone (8) is fixedly connected to a fixing column (11); the bottom end of the fixing column (11) is fixedly connected to a water collection bowl (12) located directly below the dripping cone (10); a water outlet (13) is provided on the water collection bowl (12); a water outlet pipe (14) is fixedly connected to the water collection bowl (12); the water outlet pipe (14) is connected to the inside of the water collection bowl (12) via the water outlet (13); the bottom of the water collection bowl (12) is covered and fixedly connected with a water absorbing sponge (15); and a squeezing component for squeezing the water absorbing sponge (15) is provided in the drying barrel (1); The extrusion assembly comprises an extrusion cover (16) rotatably connected to the water collecting bowl (12) through a fixing plate and a pin shaft, two connecting columns (17) are fixedly connected to the bottom end of the extrusion cover (16), a first connecting line (18) is fixedly connected between the two connecting columns (17), a second connecting line (19) is fixedly connected to the first connecting line (18), a plurality of limiting cavities (20) are provided on the top of the drying barrel (1), one end of the second connecting line (19) passes through the water collecting membrane (9), the water collecting cone (8) and the drying barrel (1) in sequence and is fixedly connected to a first magnet (21), the first magnet (21) is slidably connected in the limiting cavity (20), a first spring (22) is fixedly connected between the first magnet (21) and the inner wall of the limiting cavity (20), one end of the limiting cavity (20) is fixedly connected to an electromagnet (23) facing the first magnet (21), and a vibration assembly for vibrating the water collecting membrane (9) is provided on the drying barrel (1); The vibration assembly comprises two rotating rods (24) fixedly connected to the top surface of the rotating shaft (6), two second magnets (25) fixedly connected to the rotating rods (24), the second magnets (25) having opposite polarities to the surface directly facing the first magnet (21) closest to the rotating shaft (6), a third connecting line (26) passing through the water collecting cone (8) and the top of the drying barrel (1) fixedly connected to the water collecting membrane (9), the third connecting line (26) being in a taut state, and one end of the third connecting line (26) fixedly connected to a connecting block (27) located in the limiting cavity (20); When the motor (5) drives the rotating shaft (6) to rotate, the rotating shaft (6) can drive the rotating rod (24) to rotate, and the rotating rod (24) drives the second magnet (25) to rotate. When the second magnet (25) approaches the corresponding first magnet (21), the second magnet (25) can attract the first magnet (21) to move in the direction of the rotating shaft (6), and the first spring (22) is compressed. During the movement, the first magnet (21) contacts and pushes the connecting block (27), and the connecting block (27) pulls the water collecting membrane (9) through the third connecting line (26). When the second magnet (25) moves away from the first magnet (21), under the action of the first spring (22), the first magnet (21) and the connecting block (27) return to their original positions. The connecting block (27) generates vibration during the process of being pushed and reset, and the vibration can be transmitted to the water collecting membrane (9) through the third connecting line (26). The vibration can cause the water attached to the water collecting membrane (9) to slide down quickly. The extrusion cover (16) is provided with a plurality of openings for leaking water, the extrusion cover (16) is provided with a through opening (28), the inner wall of the through opening (28) is fixedly connected with a toggle block (29), the water outlet pipe (14) is located on a track where the through opening (28) and the toggle block (29) rotate around a pin of the extrusion cover (16), and the through opening (28) prevents the water outlet pipe (14) from hindering the rotation of the extrusion cover (16).

2. A sodium ion battery positive electrode precursor preparation device according to claim 1, characterized in that: The side wall water collecting assembly comprises a water collecting ring (30) fixedly connected to the inner wall of the drying barrel (1); the cross section of the water collecting ring (30) is U-shaped; one side of the cross section of the water collecting ring (30) close to the inner wall of the drying barrel (1) is arranged as an inclined surface (31); the bottom of the water collecting ring (30) is connected and fixedly connected with a plurality of arc-shaped tubes (32) passing through the side wall of the drying barrel (1); and an impact assembly for impacting the drying barrel (1) is arranged inside the drying barrel (1).

3. A sodium ion battery positive electrode precursor preparation device according to claim 2, characterized in that: The impact assembly comprises a horizontal block (33) fixedly connected to the top of two stirring rods (7); a second spring (34) is fixedly connected to the inner wall of the horizontal block (33); a moving block (35) is fixedly connected to one end of the second spring (34); a moving column (36) for sliding and observing the horizontal block (33) is fixedly connected to one side wall of the moving block (35); a collision block (37) is fixedly connected to one end of the moving column (36); a plurality of arc blocks (38) are fixedly connected to the inner wall of the drying barrel (1); and the arc blocks (38) are located on the trajectory of the collision block (37) rotating around the rotating shaft (6).

4. A sodium ion battery positive electrode precursor preparation device according to claim 3, characterized in that: The hot air input component comprises an air inlet pipe (39) fixedly connected to the discharge pipe (3), one end of the air inlet pipe (39) is connected to an external hot air blower, the other end of the air inlet pipe (39) is rotatably connected to the bottom end of the rotating shaft (6) through a bearing, an air inlet cavity (40) connected to the air inlet pipe (39) is provided in the rotating shaft (6), a cavity (41) connected to the air inlet cavity (40) is provided in the stirring rod (7), a plurality of air outlets (42) are provided at the bottom of the stirring rod (7), an air outlet pipe (43) connected to the cavity (41) through the air outlet (42) is fixedly connected to the bottom of the stirring rod (7), and a blocking component for blocking the air outlet pipe (43) is provided in the air outlet pipe (43).

5. A sodium ion battery positive electrode precursor preparation device according to claim 4, characterized in that: The blocking component comprises a fixed seat (44) fixed in the air outlet pipe (43), a blocking ball (45) is rotatably connected to the middle part of the fixed seat (44), an arc-shaped air outlet channel (46) is provided in the blocking ball (45), the heights of both ends of the air outlet channel (46) are lower than the top of the fixed seat (44), an inclined connecting piece (47) is fixed on the surface of the blocking ball (45), and a third spring (48) is fixed between the connecting piece (47) and the inner wall of the air outlet pipe (43).

Images