Electrode raw material conveying system

Abstract

An electrode raw material transfer system according to an embodiment of the present invention comprises: a stirring unit having an inlet through which an electrode raw material is fed to the stirring unit, and configured to perform a mixing process of the electrode raw material; a sensor unit provided to measure a pressure within the stirring unit; an air injection unit provided at an inlet of the stirring unit to inject air into the inlet; a vibration unit provided to apply vibration to the inlet; and a control unit provided to adjust the pressure of the air injected by the air injection unit based on the pressure within the stirring unit.

Description

Technical Field

[0001] The present invention relates to a conveying system for electrode raw materials, and more particularly, to a conveying system for powder-type electrode raw materials. Specifically, the present invention relates to an electrode raw material conveying system that can prevent blockage of the inlet portion in the stirring section due to electrode raw materials by applying pneumatic pressure and vibration to the inlet portion.

[0002] This application claims the priority benefit based on Korean Patent Application No. 10-2023-0071697 filed on June 2, 2023, the disclosure of which is incorporated herein by reference in its entirety. Background Art

[0003] A secondary battery is a rechargeable battery configured to repeatedly charge and discharge by moving ions in an electrolyte between a positive electrode and a negative electrode insulated by a separator. The secondary battery may include an electrode assembly and a case in which the electrode assembly is embedded, and the electrode assembly is formed by alternately laminating a positive electrode, a negative electrode, and a separator.

[0004] The process for manufacturing a secondary battery includes an electrode process, an assembly process, and an activation process. Here, the electrode process is a process for manufacturing a positive electrode and a negative electrode. The positive electrode or the negative electrode is manufactured through the following processes in sequence.

[0005] The electrode process includes a mixing process, a coating process, a winding process, a slitting process, and a notching process.

[0006] Figure 1 A conventional mixing device is schematically shown, and Figure 2 is a schematic cross-sectional view taken along line A-A in Figure 1 therein.

[0007] The mixing process is a process of measuring and mixing various electrode raw materials, and in the mixing process, various electrode raw materials are mixed to form a liquid slurry.

[0008] The slurry is a mixture of an active material, a conductive material, a binder, and a solvent. The active material and the conductive material are dry-mixed in powder form. Thereafter, the active material and the conductive material are wet-mixed in a solvent in which the binder is dissolved to form a slurry.

[0009] The mixing device 10 includes a raw material supply hopper 20 and a stirring section 30. The powder-type electrode raw material 50 is introduced into the raw material supply hopper 50, and the electrode raw material 50 supplied from the hopper 20 is stirred in the stirring section 30.

[0010] As the raw material 50 for the powder-type electrode, various active materials can be used according to the type of secondary battery product. In particular, the usage amounts of the positive electrode active material and the negative electrode active material are very large, and thus the materials are mainly supplied to the mixing device 10 in the form of powder.

[0011] Depending on the characteristics of each raw material, the transfer times of the respective electrode raw materials 50 introduced into the stirring unit 30 are different, and the mixing times of the raw materials mixed in the mixing device 10 are different, etc.

[0012] In addition, in the process of transferring from the raw material supply hopper 20 to the stirring unit 30, depending on the characteristics of the electrode raw material 50, there is a phenomenon that the inlet portion 31 of the stirring unit 30 and / or the pipe portion 40 connecting the raw material hopper 20 and the inlet portion 31 of the stirring unit 30 are blocked due to the agglomeration phenomenon between the electrode raw materials 50. In addition, the inlet portion 31 of the stirring unit 30 and the pipe portion 40 can be connected by a clamp 60.

[0013] Here, the agglomeration phenomenon between the electrode raw materials 50 in powder form may be caused by the characteristics of the electrode raw materials 50, and as an example, the powder agglomeration phenomenon may be caused by the chemical reaction between the internal moisture component of the mixing device 10 and the electrode raw materials 50 in powder form.

[0014] If the inlet portion 31 of the stirring unit 30 and / or the pipe portion 40 become blocked, it takes a long time for the transfer time of the electrode raw material 50 to the stirring unit 30. In addition, if the inlet portion 31 of the stirring unit 30 is blocked and thus the input area of the inlet portion 31 becomes narrow, it is difficult to accurately calculate the input area of the electrode raw material 50 passing through the inlet portion 31 per unit time.

[0015] Therefore, there may be a problem that the electrode raw material 50 is not quantitatively introduced, and when the inlet portion 31 of the stirring unit 30 is blocked, there is a problem of defective slurry due to the measurement error in the electrode raw material 50.

[0016] Conventionally, when the pipe portion 40 and / or the inlet portion 31 of the stirring unit 30 are blocked in the mixing process, workers perform the work of separating the clamp 60 and the pipe portion 40, and manually crush the electrode raw material 50 (for example, positive electrode active material, negative electrode active material, etc.) agglomerated at the inlet portion 31 of the pipe portion 40 and / or the stirring unit 30. Therefore, there is a problem that the mixing process cannot be performed during the working hours, resulting in a reduction in the slurry productivity. Summary of the Invention

[0017] Technical Problem

[0018] The present invention aims to provide an electrode raw material conveying system that can prevent blockage of the inlet portion in the stirring section due to electrode raw materials during the mixing process by applying pneumatic pressure and vibration to the inlet portion.

[0019] Furthermore, the present invention aims to provide an electrode raw material conveying system that can shorten the conveying time of electrode raw materials by preventing blockage of the inlet portion of the stirring section.

[0020] Technical solution

[0021] To solve the above problems, an electrode raw material conveying system according to an example of the present invention includes: a stirring section having an inlet portion into which electrode raw materials are introduced, and the stirring section is configured to perform a mixing process of the electrode raw materials; a sensor section configured to measure the pressure inside the stirring section; an air injection section provided at the inlet portion of the stirring section and configured to inject air into the inlet portion; a vibration section configured to apply vibration to the inlet portion; and a control section configured to adjust the air injection pressure of the air injection section based on the pressure inside the stirring section. As an example, the electrode raw material may be a powder-type electrode raw material.

[0022] The air injection section may include: a plurality of air nozzles provided inside the inlet portion to inject air along the input direction of the electrode raw materials; a pneumatic pressure supply section that supplies pneumatic pressure to each air nozzle; and a regulator for adjusting the pneumatic pressure supplied to each air nozzle. As an example, the pneumatic pressure supply section may include an air pump, and the regulator may adjust the pressure (pneumatic pressure) of the air ejected from the air nozzle by adjusting the air flow rate.

[0023] Furthermore, the plurality of air nozzles may be provided at intervals along the circumferential direction of the inlet portion of the stirring section.

[0024] In addition, the vibration section may include an air turbine vibrator.

[0025] Furthermore, the control section may be configured to operate the air injection section and the vibration section in an input mode in which the electrode raw materials are introduced into the stirring section.

[0026] Furthermore, the control section may operate the air injection section such that air is ejected at a first operating pressure lower than the internal pressure of the stirring section in the input mode.

[0027] In addition, in the input mode, the first operating pressure may be from 0.1 MPa to 0.6 MPa.

[0028] Furthermore, the control unit may control the operation of the vibration unit such that the vibration is applied with an intensity of 1 kgf to 60 kgf in the input mode.

[0029] In addition, the electrode raw material transfer system may further include: a raw material supply unit having an outlet portion for supplying the electrode raw material to the stirring unit; and a pipe unit connecting the outlet portion and the inlet portion and guiding the transfer of the electrode raw material from the raw material supply unit to the stirring unit.

[0030] In addition, the pipe unit may include: a first pipe connected to the stirring unit; a second pipe connected to the raw material supply unit; and a shock-absorbing pipe provided inside the second pipe.

[0031] Furthermore, the first pipe and the second pipe may be connected by a clamp. The first pipe may form the inlet portion of the stirring unit, and the second pipe may form the outlet portion of the raw material supply unit.

[0032] In addition, the air injection unit and the vibration unit may be respectively provided in the first pipe. As an example, the air injection unit may be arranged to inject air into the first pipe, and the vibration unit may be arranged to apply vibration to the first pipe.

[0033] In addition, the electrode raw material transfer system may include: a pneumatic hammer mounted on the second pipe and arranged to strike the second pipe in the input mode of the electrode raw material.

[0034] Furthermore, the control unit may be arranged to continuously operate the air injection unit and the vibration unit in the input mode and operate the pneumatic hammer at a predetermined time interval.

[0035] In addition, the shock-absorbing pipe may be formed of a silicone resin material. In addition, the shock-absorbing pipe may be arranged to surround a partial area of the second pipe.

[0036] The electrode raw material transfer system may further include an exhaust pipe, and the exhaust pipe is connected to the stirring unit. The control unit may be configured to open the exhaust pipe to the outside in the input mode. When pneumatic pressure ejected from the air injection unit is supplied to the inside of the stirring unit in the input mode, the pressure inside the stirring unit may increase. In this case, by opening the exhaust pipe to the outside, the pressure inside the stirring unit can be maintained constant. An electronic valve may be provided in the exhaust pipe.

[0037] In addition, the control unit may operate the air injection unit such that when the pressure inside the stirring unit decreases in the input mode, air is ejected at a second operating pressure greater than the first operating pressure.

[0038] Advantageous Effects

[0039] As described above, the electrode raw material transfer system according to an example of the present invention has the following effects.

[0040] By applying pneumatic pressure and vibration to the inlet portion of the stirring unit, it is possible to prevent the inlet portion from being blocked by the electrode raw material during the mixing process. In particular, in the input mode of the electrode raw material, by injecting air into the inlet portion of the stirring unit, it is possible to prevent agglomeration from occurring between the electrode raw materials in powder form.

[0041] Moreover, the air ejected from the air nozzle is ejected in the input direction of the electrode raw material, whereby the powder-type electrode raw material can be pushed in the input direction and simultaneously introduced into the stirring unit in the form of powder.

[0042] In addition, by applying vibration to the inlet portion of the stirring unit in the input mode of the electrode raw material, it is possible to prevent the electrode raw material from adhering to the inner surface of the inlet portion.

[0043] In addition, by preventing the inlet portion of the stirring unit from being blocked by the electrode raw material, the transfer time of the electrode raw material can be shortened, and the productivity of the slurry can be improved.

[0044] In addition, it is possible to minimize the input area error caused by the blockage of the electrode raw material and to minimize the measurement error of the electrode raw material. Description of the Drawings

[0045] Figure 1 A conventional mixing device is schematically shown.

[0046] Figure 2 is a schematic cross-sectional view taken along line A-A in Figure 1 ...

[0047] Figure 3It is a configuration diagram of an electrode raw material transfer system according to an example of the present invention.

[0048] Figure 4 It is a schematic diagram of an electrode raw material transfer system according to an example of the present invention.

[0049] Figure 5 It is along Figure 4 A schematic cross-sectional view taken along line B-B in

[0050] Figure 6 It is a diagram for explaining an operating state of an electrode raw material transfer system according to an example of the present invention.

[0051] Figure 7 It is Figure 6 An enlarged view of the inlet portion shown in Detailed Description of the Invention

[0052] Hereinafter, an electrode raw material transfer system according to an example of the present invention will be described with reference to the accompanying drawings.

[0053] In addition, regardless of the reference numerals, the same or corresponding components are denoted by the same or similar reference numerals, and their repeated description will be omitted, and for ease of explanation, the size and shape of each component shown in the drawings may be exaggerated or reduced.

[0054] Figure 3 It is a configuration diagram of an electrode raw material transfer system 100 according to an example of the present invention, Figure 4 It is a schematic diagram of an electrode raw material transfer system 100 according to an example of the present invention, and Figure 5 It is along Figure 4 A schematic cross-sectional view taken along line B-B in

[0055] As an example, herein, the electrode raw material may be a powder-type electrode raw material.

[0056] The electrode raw material transfer system 100 related to an example of the present invention includes a stirring unit 130 having an inlet portion 131 into which the powder-type electrode raw material 50 is introduced, and the stirring unit 130 is configured to perform a mixing process of the electrode raw material 50.

[0057] In addition, the electrode raw material transfer system 100 may include a clogging prevention unit 120 provided at the inlet portion 131 and configured to supply pneumatic pressure and vibration to the inlet portion 131.

[0058] The clogging prevention unit 120 includes an air injection unit 140 and a vibration unit 150.

[0059] The electrode raw material transfer system 100 includes a sensor unit 135 configured to measure the pressure within the stirring unit 130.

[0060] The stirring unit 130 includes a stirring element 133. The stirring element 133 includes a rotating shaft connected to a drive unit (such as a motor) and a plurality of blades mounted on the rotating shaft. The stirring unit 130 is configured such that the stirring element 133 operates in an input mode in which electrode raw materials are introduced. When the stirring element 133 operates, it mixes the electrode raw materials 50 within the stirring unit 130 while the rotating shaft rotates via the drive unit and the plurality of blades mounted on the rotating shaft rotate.

[0061] In addition, the electrode raw material transfer system 100 may include an air injection unit 140, which is disposed at the inlet portion 131 of the stirring unit 130 and is configured to inject air into the inlet portion 131.

[0062] In addition, the electrode raw material transfer system 100 may include a vibration unit 150, which is configured to apply vibration to the inlet portion 131.

[0063] In addition, the electrode raw material transfer system 100 includes a control unit 190, which is configured to adjust the air injection pressure of the air injection unit based on the pressure within the stirring unit 130.

[0064] The sensor unit 135 may include one or more pressure sensors, which are configured to measure the pressure within the stirring unit 130. Additionally, the measured pressure within the stirring unit 130 is transmitted to the control unit 190, and the control unit 190 is configured to adjust the injection pressure of the air injected through the air injection unit 140 based on the measured pressure within the stirring unit 130.

[0065] The air injection unit 140 is configured such that fluid can move within the inlet portion 131. The air injection unit 140 is configured to inject air within the interior of the inlet portion 131 at a predetermined pneumatic pressure. Herein, the pressure of the air injected through the air injection unit 140 (pneumatic pressure) may be referred to as the operating pressure or injection pressure.

[0066] Figure 6 is a diagram for illustrating an operating state of the electrode raw material transfer system 100 according to an example of the present invention, and Figure 7 is Figure 6 an enlarged view of the shown inlet portion 131.

[0067] The air injection unit 140 may include a plurality of air nozzles 141 to 144 disposed within the inlet portion 131 to inject air along the input direction F1 of the electrode raw materials 50.

[0068] In addition, the air injection unit 140 may include a pneumatic pressure supply unit 149 connected to each of the air nozzles 141 to 144 and supplying pneumatic pressure to each of the air nozzles 141 to 144, and a regulator 145 for adjusting the pneumatic pressure supplied to each of the air nozzles 141 to 144. As an example, the pneumatic pressure supply unit 149 may include an air pump, and the regulator 145 may adjust the pressure (pneumatic pressure) of the air ejected from the air nozzles 141 to 144 by adjusting the air flow rate.

[0069] Each of the air nozzles 141 to 144 may be disposed in the inlet portion 131 at a distance from the vibration unit 150. In addition, the plurality of air nozzles 141 to 144 may be arranged at intervals in the circumferential direction of the inlet portion 131 of the stirring unit 130.

[0070] Refer to Figure 6 and Figure 7 , the plurality of air nozzles 141 to 144 may be disposed in the inlet portion 131 such that the air injection direction A1 is parallel to the electrode raw material input direction F1.

[0071] The pneumatic pressure supply unit 149 is connected to each of the air nozzles 141 to 144, and the pneumatic pressure supply unit 149 supplies pneumatic pressure to each of the air nozzles 141 to 144 in the input mode of the electrode raw material 50.

[0072] In addition, the electrode raw material transfer system 100 may include a raw material supply unit 110 having an outlet portion 111 for supplying the electrode raw material 50 to the stirring unit 130, and the raw material supply unit 110 may include a hopper. In addition, the raw material supply unit 110 may also store the powder-type electrode raw material 50, and the electrode raw material 50 may be a positive electrode active material, a negative electrode active material, or a conductive material.

[0073] In addition, the electrode raw material transfer system 100 may include a pipe portion 170 that connects the outlet portion 111 and the inlet portion 131 and guides the transfer of the electrode raw material 50 from the raw material supply unit 110 to the stirring unit 130.

[0074] In addition, the pipe portion 170 may include a first pipe 175 connected to the stirring unit 130, a second pipe 171 connected to the raw material supply unit 110, and a vibration damping pipe 173 provided in the second pipe 171. In addition, the first pipe 175 and the second pipe 171 may be connected by a clamp 177.

[0075] An outlet portion 111 may be provided at the bottom of the raw material supply unit 110, and the outlet portion 111 serves as a passage for discharging the electrode raw material 50 from the raw material supply unit 110. In addition, an inlet portion 131 for introducing the electrode raw material 50 may be provided at the top of the stirring unit 130. At this time, the first pipe 175 may form the inlet portion 131 of the stirring unit 130, and the second pipe 171 may form the outlet portion 111 of the raw material supply unit 110.

[0076] In such a structure, the electrode raw material 50 in the raw material supply unit 110 can be introduced into the stirring unit 130 by sequentially passing through the second pipe 171 and the first pipe 175.

[0077] In addition, the air injection unit 140 and the vibration unit 150 may be respectively provided in the first pipe 175. As an example, the air injection unit 140 may be arranged to inject air from the inside of the first pipe 175, and the vibration unit 150 may be arranged to apply vibration to the first pipe 175.

[0078] In addition, the control unit 190 may be arranged to operate the air injection unit 140 and the vibration unit 150 in the input mode of introducing the electrode raw material 50 into the stirring unit 130.

[0079] In addition, the control unit 190 may operate the air injection unit 140 to inject air at a first operating pressure lower than the internal pressure of the stirring unit 130 in the input mode. As an example, in the input mode, the first operating pressure may be 0.1 MPa to 0.6 MPa. In addition, the first operating pressure may be 0.3 MPa to 0.4 MPa.

[0080] In the input mode of the electrode raw material 50, the air injection unit 140 injects air into the electrode raw material 50 flowing through the inlet portion 131, so that the electrode raw material 50 is scattered in the form of powder, and performs the function of pushing the electrode raw material 50 in the electrode raw material input direction F1.

[0081] In addition, the electrode raw material conveying system 100 may include an exhaust pipe 210 connected to the stirring unit 130. The control unit 190 may be arranged to open the exhaust pipe 210 to the outside O in the input mode of the electrode raw material 50. In the input mode of the electrode raw material 50, as the pneumatic pressure ejected from the air injection unit 140 is applied to the inside of the stirring unit 130, the pressure inside the stirring unit 130 may increase. In this case, by opening the exhaust pipe 210 to the outside O, the pressure inside the stirring unit 130 can be kept constant. An electronic valve 220 may be provided in the exhaust pipe 210. The electronic valve 220 is arranged to open or close the exhaust pipe 210.

[0082] In addition, a filter may be provided in the exhaust pipe 210. Thus, the fluid discharged from the stirring unit 130 along the exhaust pipe 210 can pass through the filter and then be discharged to the outside of the electrode raw material transfer system 100.

[0083] Referring Figure 4 , the vibrating unit 150 may be provided outside the inlet portion 131. The vibrating unit 150 may be configured to apply vibration to the first pipe 175, and the vibrating unit 150 may be configured to apply vibration from the outside of the first pipe 175.

[0084] In addition, the vibrating unit 150 may be arranged to be spaced apart from each of the air nozzles 141 to 144.

[0085] In addition, the vibrating unit 150 is configured to provide a vibration Fv of a predetermined magnitude to the inlet portion 131. The intensity of the vibration Fv generated in the vibrating unit 150 may be in the range of 1 kgf to 60 kgf. In addition, the intensity of the vibration Fv generated in the vibrating unit 150 may be in the range of 20 kgf to 25 kgf. That is, the control unit 190 may control the operation of the vibrating unit 150 such that vibration is applied at an intensity of 1 kgf to 60 kgf in the input mode of the electrode raw material 50.

[0086] In addition, the vibrating unit 150 may include an air turbine vibrator. An air turbine vibrator is a device that uses compressed air as a power source to apply vibration to the inlet portion 131. As an example, an air turbine vibrator is a known device, and such a known device may be a vibrating device that generates a vibration force by rotating an internal rotating turbine gear.

[0087] The vibrating unit 150 provides vibration Fv to the inlet portion 131 in the input mode of the electrode raw material 50. When the vibrating unit 150 operates, vibration occurs outside the first pipe 175. In this way, by applying vibration Fv to the inlet portion 131 in the input mode of the electrode raw material 50, it is possible to prevent the electrode raw material 50 from adhering to the inner surface of the inlet portion 131 (or the inner surface of the first pipe).

[0088] As described above, the pipe portion 170 connects the outlet portion 111 of the raw material supply unit 110 and the inlet portion 131 of the stirring unit 130, and the pipe portion 170 performs the function of guiding the electrode raw material 50 from the raw material supply unit 110 to the stirring unit 130.

[0089] The second pipe 171 may constitute the outlet portion 111 of the raw material supply unit 110, and the second pipe 171 may be made of a rigid metal material.

[0090] In addition, the first pipe 175 can be detachably coupled to the second pipe 171 through a fixture 177, and the first pipe 175 can be made of a rigid metal material.

[0091] The electrode raw material conveying system 100 can be installed on the second pipe 171 and can include a pneumatic knocker 180 that is configured to strike the second pipe 171 in the input mode of the electrode raw material 50.

[0092] The pneumatic knocker 180 can be disposed in the second pipe 171, and the pneumatic knocker 180 functions to prevent the electrode raw material 50 in powder form from adhering to the inner surface of the second pipe 171 by striking the second pipe 171 in the input mode of the electrode raw material 50.

[0093] The pneumatic knocker 180 is a known device. As an example, the device can be a vibration impact device that causes the electrode raw material 50 adhering to the inner surface of the second pipe 171 to fall off in an indirect impact manner through the reaction between compressed air and the magnetic force of a magnetic piston.

[0094] When the pneumatic knocker 180 operates, vibrations occur in the second pipe 171 due to the force of the pneumatic knocker 180 striking the second pipe 171. At this time, if the vibrations generated from the pneumatic knocker 180 are transmitted to the stirring unit 130, it may cause a malfunction of the stirring unit 130.

[0095] To prevent this, a vibration damping pipe 173 can be provided to surround a partial area of the second pipe 171. In addition, the vibration damping pipe 173 can be formed of a silicone resin material. The vibration damping pipe 173 can prevent vibrations from being transmitted from the second pipe 171 to the first pipe 175.

[0096] The control unit 190 controls the operations of the raw material supply unit 110, the stirring unit 130, the air injection unit 140, the vibration unit 150, and the pneumatic knocker 180.

[0097] In the input mode of the electrode raw material 50, the control unit 190 controls the operation of the raw material supply unit 110 such that the electrode raw material 50 is introduced into the inlet portion 131 through the outlet portion 111 of the raw material supply unit 110. In addition, in the input mode of the electrode raw material 50, the control unit 190 operates the stirring unit 130 and opens the exhaust pipe 210 outward.

[0098] In the input mode, the electrode raw material 50 discharged from the raw material supply unit 110 passes through the inlet portion 131 while being conveyed along the pipe portion 170, and thus is introduced into the stirring unit 130.

[0099] Depending on the characteristics of the electrode raw material 50, clogging of the inlet portion 131 may occur, and to solve this problem, the control unit 190 controls the operations of the air injection unit 140 and the vibration unit 150 such that pneumatic pressure and vibration Fv are provided to the inlet portion (131, the first pipe) in the input mode in which the electrode raw material 50 is introduced into the stirring unit 130.

[0100] The control unit 190 can be controlled such that in the input mode of the electrode raw material 50, the air injection unit 140 and the vibration unit 150 operate continuously, and the pneumatic hammer 180 operates at a predetermined time interval. As an example, in the input mode of the electrode raw material 50, air can be continuously injected into the interior of the first pipe 175 through the air injection unit 140, and vibration can be continuously applied to the first pipe 175 through the vibration unit 150.

[0101] In addition, the control unit 190 can control the operation of the vibration unit 150 such that in the input mode of the electrode raw material 50, vibration Fv with an intensity of 1 kgf to 60 kgf is applied to the inlet portion 131.

[0102] In particular, the control unit 190 can control the operation of the air injection unit 140 such that air is supplied at a first operating pressure lower than the internal pressure of the stirring unit 130 in the input mode of the electrode raw material 50.

[0103] Furthermore, when the pressure in the stirring unit 130 decreases while air is supplied at the first operating pressure lower than the internal pressure of the stirring unit 130 in the input mode, the control unit 190 can operate the air injection unit 140 such that air is ejected at a second operating pressure greater than the first operating pressure.

[0104] Specifically, in a process of keeping the pressure of the stirring unit 130 constant (the pressure at this time is referred to as the "set pressure") in the input mode of the electrode raw material 50, the air injection unit 140 can be operated such that air is supplied at the first operating pressure, and when the pressure of the stirring unit 130 becomes lower than the set pressure, the air injection unit 140 can be operated such that air is ejected at a second operating pressure greater than the first operating pressure.

[0105] When the electrode raw material 50 adheres to the interior of the first pipe 175, the pneumatic pressure supplied through the air injection unit 140 may not be properly transmitted to the stirring unit 130, and in this case, the pressure in the stirring unit 130 may decrease. In this case, the control unit 190 operates the air injection unit 140 such that air is ejected at a second operating pressure greater than the first operating pressure, thereby solving the clogging phenomenon. In addition, when the pressure of the stirring unit 130 becomes lower than the set pressure, the control unit 190 can also increase the vibration intensity of the vibration unit 150.

[0106] In addition, if the pressure within the agitation unit 130 exceeds the set pressure, the control unit 190 may stop the input mode and stop the operations of the air injection unit 140 and the vibration unit 150.

[0107] The preferred examples of the present invention described above are disclosed for illustrative purposes, and those of ordinary skill in the art can make various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes, and additions should be regarded as falling within the scope of the following claims.

[0108] Industrial Applicability

[0109] According to the electrode raw material transfer system related to an example of the present invention, pneumatic pressure and vibration are applied to the inlet portion of the agitation unit, whereby clogging of the inlet portion due to the electrode raw material can be prevented during the mixing process.

Claims

1. An electrode raw material conveying system, the electrode raw material conveying system comprising: a stirring portion having an inlet portion into which an electrode raw material is introduced and configured to perform a mixing process of the electrode raw material; a sensor portion configured to measure a pressure within the stirring portion; an air injection portion provided at the inlet portion of the stirring portion and configured to inject air into the inlet portion; a vibration portion configured to apply vibration to the inlet portion; as well as A control unit is configured to adjust an air injection pressure of the air injection unit based on a pressure in the stirring unit.

2. The electrode raw material conveying system according to claim 1, wherein: The air injection part includes: a plurality of air nozzles disposed in the inlet portion to spray air along an input direction of the electrode raw material; a pneumatic pressure supply that provides pneumatic pressure to each air nozzle; and A regulator for regulating the pneumatic pressure supplied to each air nozzle.

3. The electrode raw material conveying system according to claim 2, wherein: The plurality of air nozzles are disposed spaced apart from each other along a circumferential direction of the inlet portion.

4. The electrode raw material conveying system according to claim 1, wherein: The vibration portion includes an air turbine vibrator.

5. The electrode raw material conveying system according to claim 1, wherein: The control portion is configured to operate the air injection portion and the vibration portion in an input mode in which the electrode raw material is introduced into the stirring portion.

6. The electrode raw material conveying system according to claim 5, wherein: The control part operates the air injection part so as to inject air at a first operation pressure lower than an internal pressure of the agitation part in the input mode.

7. The electrode raw material conveying system according to claim 6, wherein: In the input mode, the first operating pressure is 0.1 MPa to 0.6 MPa.

8. The electrode raw material conveying system according to claim 5, wherein: The control section controls the operation of the vibration section so that the vibration is applied at an intensity of 1 kgf to 60 kgf in the input mode.

9. The electrode raw material conveying system according to claim 1, further comprising: a raw material supply portion having an outlet portion for supplying the electrode raw material to the stirring portion; as well as A duct portion connects the outlet portion and the inlet portion and guides transfer of the electrode raw material from the raw material supply portion to the stirring portion.

10. The electrode raw material conveying system according to claim 9, wherein: The pipeline section comprises: a first pipe connected to the stirring part; a second pipe connected to the raw material supply; and A vibration damping pipe is arranged in the second pipeline.

11. The electrode raw material conveying system according to claim 10, further comprising: A pneumatic knocker is mounted on the second pipe and is configured to knock the second pipe in the input mode of the electrode raw material.

12. The electrode raw material conveying system according to claim 11, wherein: The control part is configured to continuously operate the air injection part and the vibration part in the input mode, and to operate the pneumatic knocker at predetermined time intervals.

13. The electrode raw material conveying system according to claim 10, wherein: The vibration damping tube is formed of a silicone material.

14. The electrode raw material conveying system according to claim 6, further comprising: an exhaust pipe connected to the stirring portion, Wherein, the control unit is configured to open the exhaust pipe outward in the input mode.

15. The electrode raw material conveying system according to claim 14, wherein: The control part operates the air injection part so that the air is injected at a second operating pressure greater than the first operating pressure when the pressure within the agitation part decreases in the input mode.

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