Production equipment for nanofiber negative electrode of sodium-ion battery

Abstract

The utility model provides production equipment of a sodium ion battery nanofiber negative electrode, which belongs to the technical field of battery preparation and comprises a mixing box, a feeding hopper, a quantifying assembly, a first motor, a stirring assembly, a material guide pipe and a fixing rod, the feeding hopper is arranged on the left side of the upper surface of the mixing box in a penetrating manner, and the quantifying assembly is arranged on the right side of the upper surface of the mixing box in a penetrating manner; the stirring assembly and the material guide pipe are arranged, the first motor is started, the first motor drives the rotating shaft to rotate, and the rotating shaft drives the transverse rod and the vertical rod to rotate, so that the stirring rod of the vertical rod stirs fine powder and a solvent, and meanwhile, the rotating shaft drives the spiral blade to rotate; and the spiral blade upwards guides the fine powder and the solvent at the bottom of the inner side of the mixing box along the material guide pipe until the fine powder and the solvent at the bottom of the inner side of the mixing box are discharged from the top of the material guide pipe, so that the fine powder obtained after the negative electrode active material is crushed is prevented from precipitating at the bottom of the inner side of the mixing box, and uniform material mixing is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery preparation, in particular to a production device for a sodium ion battery nanofiber negative electrode. Background Art

[0002] Sodium ion battery is a new type of energy storage battery. Its working principle is similar to that of lithium ion battery, but it uses sodium ions as charge carriers. Sodium ion battery has many advantages, such as high energy density, low self-discharge rate, long life, etc. In addition, due to the abundant sodium resources and low price, the production cost of sodium ion battery is relatively low. Sodium ion battery is a secondary battery, a rechargeable battery, which mainly relies on the movement of sodium ions between the positive and negative electrodes to work. Similar to the working principle of lithium ion battery, during the charging and discharging process, Na+ is embedded and de-embedded between the two electrodes. When charging, Na+ is de-embedded from the positive electrode and embedded into the negative electrode through the electrolyte; the opposite is true when discharging.

[0003] In the production process of sodium-ion battery fast-charging negative electrode materials, the negative electrode active material is crushed into fine powder, and multiple solvents need to be added for mixing and stirring. The existing mixing equipment has uneven stirring.

[0004] As in the prior art, a Chinese patent with a patent publication number of CN217989021U discloses a production device for a negative electrode material for a sodium ion battery, wherein the device is provided with a first stirring rod, a first transmission shaft, a second stirring rod and a second transmission shaft, and the first transmission shaft rotates in opposite directions to the second transmission shaft, so that the first stirring rod rotates in opposite directions to the second stirring rod, thereby facilitating uniform mixing and stirring of the negative electrode active material;

[0005] However, in the process of crushing the negative electrode active material into fine powder and mixing it with the solvent, the fine powder will settle at the bottom of the solvent inside the mixing box due to gravity, affecting the uniformity of the stirring and mixing. Therefore, a production equipment for sodium ion battery nanofiber negative electrode is designed to solve the above problem. Utility Model Content

[0006] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a production device for a sodium ion battery nanofiber negative electrode.

[0007] The technical problem to be solved by the utility model is to provide a production device for a sodium ion battery nanofiber negative electrode, which can prevent fine powder from settling at the bottom of a solvent in a mixing box, ensure the uniformity of the mixed material, and has high practicality.

[0008] The utility model provides a production device for a sodium ion battery nanofiber negative electrode, comprising: a mixing box, a feeding hopper, a quantitative component, a first motor, a stirring component, a material guide pipe and a fixed rod, wherein the feeding hopper is provided through the left side of the upper surface of the mixing box, the quantitative component is provided through the right side of the upper surface of the mixing box, the first motor is fixedly provided at the center of the upper surface of the mixing box, the stirring component is fixedly provided at the output end of the first motor, the material guide pipe is fixedly provided at the inner bottom of the mixing box through the fixed rod, the electromagnetic valve is provided through the center of the bottom surface of the mixing box, and the discharge component is provided through the bottom of the electromagnetic valve;

[0009] The stirring assembly includes a rotating shaft, spiral blades, a cross bar, a vertical bar and a stirring rod. The rotating shaft is fixedly arranged at the output end of the first motor, the spiral blades are fixedly arranged on the outer surface of the rotating shaft, the cross bar is fixedly arranged above the left and right side surfaces of the rotating shaft, the vertical bar is fixedly arranged at one end of the cross bar away from the rotating shaft, and the stirring rod is fixedly arranged on the side of the vertical bar facing the rotating shaft.

[0010] Preferably, the rotating shaft is inserted into the material guiding tube, and the spiral blades are located on the inner side of the material guiding tube.

[0011] Preferably, the quantitative component includes a storage barrel, a first valve, a quantitative barrel, a milliliter scale and a second valve, the first valve is disposed through the bottom of the storage barrel, the quantitative barrel is disposed through the bottom of the first valve, the outer surface of the quantitative barrel is engraved with milliliter scale, and the second valve is disposed through the bottom of the quantitative barrel.

[0012] Preferably, the quantitative cylinder is made of transparent plastic.

[0013] Preferably, the discharge assembly includes a discharge pipe, a second motor and a material guiding auger, the discharge pipe is provided through the bottom of the solenoid valve, the second motor is fixedly provided at the left end of the discharge pipe, and the material guiding auger is fixedly provided at the output end of the second motor.

[0014] Preferably, the discharge pipe is a pipe structure with an opening at the right end, and the diameter of the material guiding auger is equal to the inner diameter of the discharge pipe, and the material guiding auger is located on the inner side of the discharge pipe.

[0015] 1. The utility model is provided with a stirring assembly and a guide pipe, and the first motor is turned on. The first motor drives the rotating shaft to rotate, and the rotating shaft drives the horizontal rod and the vertical rod to rotate, so that the stirring rod of the vertical rod stirs the fine powder and the solvent. At the same time, the rotating shaft drives the spiral blade to rotate, and the spiral blade guides the fine powder and the solvent at the bottom of the inner side of the mixing box upward along the guide pipe until the fine powder and the solvent at the bottom of the inner side of the mixing box are discharged from the top of the guide pipe, so as to prevent the fine powder after the negative active material is crushed from settling at the bottom of the inner side of the mixing box, and ensure the uniformity of the mixing.

[0016] 2. The utility model is provided with a quantitative component. When the solvent needs to be added, the solvent is added into the storage cylinder, the first valve is opened, and the solvent in the storage cylinder flows into the quantitative cylinder. The amount of the solvent in the quantitative cylinder is observed and determined according to the milliliter scale on the quantitative cylinder, and then the first valve is closed and the second valve is opened, and the solvent in the quantitative cylinder is discharged into the mixing box, so as to achieve the effect of quantitatively adding the solvent.

[0017] 3. The utility model is provided with a discharge assembly. When discharging, the solenoid valve is opened, and the stirred slurry flows into the discharge pipe. Then, the second motor is turned on, and the second motor drives the guide auger to rotate. The guide auger guides the mixed slurry to the right end of the discharge pipe for discharge, and enters the next step. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0019] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the stirring component of the utility model.

[0021] Figure 3 It is a three-dimensional schematic diagram of the material guide tube of the utility model.

[0022] Figure 4 It is a three-dimensional schematic diagram of the quantitative component of the utility model.

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the discharge assembly of the utility model.

[0024] [Reference Signs]

[0025] 1. Mixing box; 2. Feeding hopper; 3. Storage barrel; 301. First valve; 302. Measuring barrel; 303. Milliliter scale; 304. Second valve; 4. First motor; 5. Rotating shaft; 501. Spiral blade; 502. Cross bar; 503. Vertical bar; 504. Stirring rod; 6. Material guide pipe; 601. Fixed rod; 7. Solenoid valve; 8. Discharge pipe; 801. Second motor; 802. Material guide auger. DETAILED DESCRIPTION Example

[0026] like Figure 1-Figure 5As shown, an embodiment of the utility model provides a production device for a sodium ion battery nanofiber negative electrode, comprising: a mixing box 1, a feeding hopper 2, a quantitative component, a first motor 4, a stirring component, a guide pipe 6 and a fixed rod 601, the feeding hopper 2 is penetrated on the left side of the upper surface of the mixing box 1, the quantitative component is penetrated on the right side of the upper surface of the mixing box 1, the first motor 4 is fixedly arranged at the center of the upper surface of the mixing box 1, the stirring component is fixedly arranged at the output end of the first motor 4, the guide pipe 6 is fixedly arranged at the inner bottom of the mixing box 1 through the fixed rod 601, the electromagnetic valve 7 is penetrated in the center of the bottom surface of the mixing box 1, and the discharge component is penetrated at the bottom of the electromagnetic valve 7;

[0027] The stirring assembly includes a rotating shaft 5, a spiral blade 501, a cross bar 502, a vertical bar 503 and a stirring rod 504. The rotating shaft 5 is fixedly arranged at the output end of the first motor 4, the spiral blade 501 is fixedly arranged on the outer surface of the rotating shaft 5, the cross bar 502 is fixedly arranged above the left and right side surfaces of the rotating shaft 5, the vertical bar 503 is fixedly arranged on the end of the cross bar 502 away from the rotating shaft 5, and the stirring rod 504 is fixedly arranged on the side of the vertical bar 503 facing the rotating shaft 5.

[0028] During actual use, the negative electrode active material is crushed into fine powder and added into the mixing box 1 through the feeding hopper 2, and then the solvent is added through the quantitative component, and the first motor 4 is turned on. The first motor 4 drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the horizontal rod 502 and the vertical rod 503 to rotate, so that the stirring rod 504 of the vertical rod 503 stirs the fine powder and the solvent. At the same time, the rotating shaft 5 drives the spiral blade 501 to rotate, and the spiral blade 501 guides the fine powder and the solvent at the bottom of the inner side of the mixing box 1 upward along the guide pipe 6 until the fine powder and the solvent at the bottom of the inner side of the mixing box 1 are discharged from the top of the guide pipe 6, so as to prevent the fine powder of the crushed negative electrode active material from settling at the bottom of the inner side of the mixing box 1 and ensure the uniformity of the mixing.

[0029] In this embodiment, the rotating shaft 5 is inserted into the guide tube 6, and the spiral blade 501 is located on the inner side of the guide tube 6, so that the spiral blade 501 can draw the solvent at the bottom of the inner side of the mixing box 1 through the guide tube 6 to the upper inner side of the mixing box 1 to prevent the precipitation of fine powder during the mixing process.

[0030] In this embodiment, the quantitative component includes a storage barrel 3, a first valve 301, a quantitative barrel 302, a milliliter scale 303 and a second valve 304. The first valve 301 is arranged through the bottom of the storage barrel 3, the quantitative barrel 302 is arranged through the bottom of the first valve 301, the milliliter scale 303 is engraved on the outer surface of the quantitative barrel 302, and the second valve 304 is arranged through the bottom of the quantitative barrel 302.

[0031] In this embodiment, the quantitative cylinder 302 is made of transparent plastic material, which is convenient for observing the amount of solvent in the quantitative cylinder 302 .

[0032] When it is necessary to add solvent quantitatively, the solvent is added into the storage barrel 3, the first valve 301 is opened, and the solvent in the storage barrel 3 flows into the quantitative barrel 302. The amount of solvent in the quantitative barrel 302 is observed and determined according to the milliliter scale on the quantitative barrel 302, and then the first valve 301 is closed and the second valve 304 is opened, and the solvent in the quantitative barrel 302 is discharged into the mixing box 1, thereby achieving the effect of quantitatively adding the solvent.

[0033] In this embodiment, the discharge assembly includes a discharge pipe 8, a second motor 801 and a material guide auger 802. The discharge pipe 8 is arranged through the bottom of the solenoid valve 7, the second motor 801 is fixedly arranged at the left end of the discharge pipe 8, and the material guide auger 802 is fixedly arranged at the output end of the second motor 801.

[0034] In this embodiment, the discharge pipe 8 is a pipeline structure with an opening at the right end, and the diameter of the material guiding auger 802 is equal to the inner diameter of the discharge pipe 8 , and the material guiding auger 802 is located on the inner side of the discharge pipe 8 .

[0035] By providing a discharge assembly, when discharging, the solenoid valve 7 is opened, and the stirred slurry flows into the discharge pipe 8. Then, the second motor 801 is turned on, and the second motor 801 drives the guide auger 802 to rotate. The guide auger 802 guides the mixed slurry to the right end of the discharge pipe 8 for discharge, and enters the next step.

[0036] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A production device for sodium ion battery nanofiber negative electrode, characterized in that: include: A mixing box (1), a feeding hopper (2), a dosing assembly, a first motor (4), a stirring assembly, a material guide pipe (6) and a fixed rod (601), wherein the feeding hopper (2) is provided through the left side of the upper surface of the mixing box (1), the dosing assembly is provided through the right side of the upper surface of the mixing box (1), the first motor (4) is fixedly provided at the center of the upper surface of the mixing box (1), the stirring assembly is fixedly provided at the output end of the first motor (4), the material guide pipe (6) is fixedly provided at the inner bottom of the mixing box (1) via the fixed rod (601), the electromagnetic valve (7) is provided through the center of the bottom surface of the mixing box (1), and the discharge assembly is provided through the bottom of the electromagnetic valve (7); The stirring assembly comprises a rotating shaft (5), a spiral blade (501), a cross bar (502), a vertical bar (503) and a stirring rod (504); the rotating shaft (5) is fixedly arranged at the output end of the first motor (4); the spiral blade (501) is fixedly arranged on the outer surface of the rotating shaft (5); the cross bar (502) is fixedly arranged above the left and right side surfaces of the rotating shaft (5); the vertical bar (503) is fixedly arranged at one end of the cross bar (502) away from the rotating shaft (5); and the stirring rod (504) is fixedly arranged on the side of the vertical bar (503) facing the rotating shaft (5).

2. The production equipment of the sodium ion battery nanofiber negative electrode according to claim 1, characterized in that: The rotating shaft (5) is inserted into the material guiding tube (6), and the spiral blade (501) is located on the inner side of the material guiding tube (6).

3. The production equipment of the sodium ion battery nanofiber negative electrode according to claim 1, characterized in that: The quantitative component comprises a material storage barrel (3), a first valve (301), a quantitative barrel (302), a milliliter scale (303) and a second valve (304); the first valve (301) is disposed through the bottom of the material storage barrel (3); the quantitative barrel (302) is disposed through the bottom of the first valve (301); the milliliter scale (303) is engraved on the outer surface of the quantitative barrel (302); and the second valve (304) is disposed through the bottom of the quantitative barrel (302).

4. The production equipment of the sodium ion battery nanofiber negative electrode according to claim 3, characterized in that: The metering cylinder (302) is made of transparent plastic.

5. The production equipment of the sodium ion battery nanofiber negative electrode according to claim 1, characterized in that: The discharge assembly comprises a discharge pipe (8), a second motor (801) and a material guide auger (802); the discharge pipe (8) is provided through the bottom of the solenoid valve (7); the second motor (801) is fixedly provided at the left end of the discharge pipe (8); and the material guide auger (802) is fixedly provided at the output end of the second motor (801).

6. The production equipment of the sodium ion battery nanofiber negative electrode according to claim 5, characterized in that: The discharge pipe (8) is a pipe structure with an opening at the right end, and the diameter of the material guide auger (802) is equal to the inner diameter of the discharge pipe (8), and the material guide auger (802) is located on the inner side of the discharge pipe (8).

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