KR102674547B1 - Discharge Module for Waste Secondary Battery Treatment - Google Patents

Abstract

A discharge module for processing waste secondary batteries that can safely shred and dispose of waste secondary batteries is disclosed. This can improve discharge efficiency because the upper and lower surfaces of the waste secondary battery can be simultaneously perforated and discharged by the upper and lower discharge rollers connected to the discharge terminal. In addition, elastic members are placed on each of the upper and lower discharge rollers, and the upper discharge rollers are arranged separately in the longitudinal direction according to the working environment, so that even if waste secondary batteries of different thickness are continuously input, the waste secondary batteries can be perforated. It can be discharged. Therefore, continuity of work can be maintained because waste secondary batteries can be discharged and shredded in an in-line method regardless of the size and thickness of the waste secondary batteries.

Description

Discharge Module for Waste Secondary Battery Treatment}

The present invention relates to a discharge module for processing waste secondary batteries, and more specifically, to a discharge module for processing waste secondary batteries that can safely shred and dispose of waste secondary batteries.

Lithium secondary batteries generally consist of a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator, and an electrolyte, and have the advantage of high energy density and high capacity, so they are applied in various fields.

Meanwhile, due to the recent expansion of the electric vehicle market and increased use of energy storage systems (ESS), the amount of secondary batteries discarded after use is expected to increase exponentially, and concerns are growing about how to dispose of waste batteries. In particular, there are concerns about safety accidents such as fire and explosion that may occur during the processing of waste batteries.

For example, during the shredding process, the electrical energy stored in a waste secondary battery causes an electrical short circuit between the anode and cathode of the secondary battery, generating a spark. This spark can generate a spark, which can lead to a fire. .

Therefore, in the conventional waste secondary battery processing system, the discharging process for discharging waste secondary batteries and the shredding process for shredding discharged waste secondary batteries are separated, so a large amount of space is required to install the treatment device, and high facility costs are required. It takes this. Additionally, if unsafe discharge occurs during the discharge process, electrical short circuits and fires may occur in the next step, the shredding step. In particular, in the event of a fire, there is a risk that the electrolyte, separator, and other plastic-based non-metallic polymer materials of the secondary battery may combust, generating many toxic substances. Since these toxic substances are directly related to the lives of workers and can have a fatal negative impact on environmental pollution issues, a treatment system that can shred eco-friendly and safe waste secondary batteries is required.

Korean registered patent 10-0345173

The present invention is intended to solve the problems of the prior art described above. In other words, the aim is to provide a discharge module for processing waste secondary batteries that can shred waste secondary batteries in a safe and environmentally friendly manner by processing the discharging and shredding processes of waste secondary batteries in one process.

The discharging module for processing waste secondary batteries of the present invention to solve the above problem is disposed opposite to the upper discharging module and the upper discharging module for discharging the waste secondary batteries brought into the chamber body by perforating them, and the waste 2 The battery is discharged by perforating it, and includes a lower discharge module that moves the discharged waste secondary battery to be shredded.

The upper discharge module includes an upper case with an open lower part, an upper discharge roller arranged to be spaced apart from the upper case and perforating the upper surface of the spent secondary battery, and disposed within the upper case, and discharged by the upper discharge roller. An upper discharge terminal for discharging the residual electrical energy of the perforated spent secondary battery to the outside, one end of which is connected to the upper discharge terminal, and the other end of which is connected to the rotation axis of the upper discharge roller, wherein the upper discharge terminal and the upper discharge terminal are connected to the upper discharge terminal. It may include an upper connection part that electrically connects the rollers, and an upper elastic member disposed on the upper connection part and allowing the upper discharge roller to move up and down by elastic force.

The upper discharge terminal is connected to a load resistor connected to ground, and the load resistor may be connected in parallel between the upper discharge terminal and the ground.

A plurality of upper discharge rollers may be arranged at a predetermined distance apart in the direction of movement of the spent secondary batteries.

The outer peripheral surface of the upper discharge roller may include a plurality of protruding perforation pins for perforating the surface of the spent secondary battery.

The upper discharge module may be arranged in a plurality with the upper discharge rollers divided in the longitudinal direction.

The upper elastic members may be respectively connected to the divided upper discharge rollers.

A plurality of the divided upper discharge rollers may be arranged in the direction in which the spent secondary battery moves, and may be arranged in a zigzag form so that the divided parts are arranged to stagger each other with respect to the upper discharge rollers adjacent to each other.

The lower discharge module includes a lower case with an open top, a lower discharge roller arranged to be spaced apart from the lower case and moving while perforating the lower surface of the spent secondary battery, and disposed within the lower case, the lower discharge roller A lower discharge terminal for discharging the residual electric energy of the spent secondary battery perforated to the outside, one end of which is connected to the lower discharge terminal, and the other end of which is connected to the rotation axis of the lower discharge roller, wherein the lower discharge terminal and the It may include a lower connection part that electrically connects the lower discharge roller, and a lower elastic member disposed on the lower connection part and allowing the lower discharge roller to move up and down by elastic force.

The lower discharge rollers may be arranged in multiple numbers to include spaced apart spaces equal to the width of the rollers along the longitudinal direction of the rotation axis.

A plurality of lower discharge rollers may be arranged adjacent to each other in the direction of movement of the spent secondary battery.

The lower discharge rollers adjacent to each other may be formed so that adjacent rollers are inserted into the spaced space, and the rollers are arranged in a zigzag shape.

The outer peripheral surface of the lower discharge roller may include a plurality of protruding perforation pins for perforating the surface of the spent secondary battery.

The lower discharge terminal is connected to a load resistor connected to ground, and the load resistor may be connected in parallel between the lower discharge terminal and the ground.

According to the present invention, discharging efficiency can be improved because the upper and lower surfaces of a waste secondary battery can be simultaneously perforated and discharged by the upper and lower discharge rollers connected to the discharging terminal.

In addition, elastic members are placed on each of the upper and lower discharge rollers, and the upper discharge rollers are arranged separately in the longitudinal direction according to the working environment, so that even if waste secondary batteries of different thickness are continuously input, the waste secondary batteries can be perforated. It can be discharged.

Furthermore, continuity of work can be maintained because waste secondary batteries can be discharged and shredded in an in-line manner regardless of the size and thickness of the waste secondary batteries.

The technical effects of the present invention are not limited to those mentioned above, and other technical effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a diagram showing a waste secondary battery processing system of the present invention.
Figure 2 is a diagram showing the upper discharge roller of the present invention.
Figure 3 is a diagram showing the separated upper discharge module according to the present invention.
Figure 4 is a diagram showing the arrangement of a separated upper discharge module according to the present invention.
Figure 5 is a diagram showing the lower discharge roller of the present invention.
Figure 6 is a flow chart showing the waste secondary battery treatment process of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, identical or corresponding components will be assigned the same drawing numbers and redundant description thereof will be omitted. Do this.

Figure 1 is a diagram showing a waste secondary battery processing system of the present invention.

Referring to Figure 1, the waste secondary battery processing system according to the present invention includes a chamber body 100, an input unit 200, a discharge unit 300, a shredding unit 400, and a discharge unit 500.

The chamber body 100 may provide a space for discharging and shredding spent secondary batteries. That is, the chamber body 100 may form an internal space that is blocked from the outside. Accordingly, the discharge unit 300, the crushing unit 400, and the discharge unit 500 may be arranged to communicate with each other inside the chamber body 100. In addition, one side of the chamber body 100 includes an inlet 101 through which waste secondary batteries are brought in, and an outlet 102 through which waste secondary batteries are discharged to the outside after discharging and crushing them is provided on the other side of the chamber body 100. It can be included. For example, the inlet 101 may be formed on the side of the chamber body 100, and the outlet 102 may be formed on the lower surface of the chamber body 100. In addition, the upper part of the chamber body 100 may include a gas outlet 103 that discharges gas that may be generated during the discharging and crushing process of the spent secondary battery.

The input unit 200 is connected to the inlet 101 of the chamber body 100, and allows spent secondary batteries to be sequentially introduced into the chamber body 100. Additionally, the input unit 200 may include a loading roller 210 and a gas injection nozzle 220.

The loading roller 210 may allow waste secondary batteries to be brought into the chamber by rotating the roller. For example, the loading roller 210 includes a plurality of loading rollers 210, and is moved from the outside of the chamber body 100 so that the spent secondary batteries loaded on the upper part of the loading roller 210 are brought into the chamber by rotation of the roller. It may be arranged to extend to the inside of the chamber body 100.

The gas injection nozzle 220 may be disposed on the upper part of the input unit 200. The gas injection nozzle 220 may spray gas toward the inside of the input unit 200 and the inside of the chamber body 100. At this time, the injected gas may be nitrogen or an inert gas, and the injected nitrogen or inert gas may serve as an air curtain to block external environmental factors such as oxygen and moisture. That is, the gas injection nozzle 220 may supply nitrogen or an inert gas into the chamber body 100 to fill the inside of the chamber body 100 with nitrogen or an inert gas. By suppressing the oxidation phenomenon inside the chamber body 100 by the gas sprayed from the gas injection nozzle 220, explosion or fire that may occur during the discharging and shredding process of the spent secondary battery can be prevented in advance. there is. That is, the discharging and shredding of spent secondary batteries that take place in the discharging unit 300 and the shredding unit 400, which will be described later, may be carried out in a nitrogen or inert gas atmosphere filled inside the chamber body 100 to prevent explosion or fire. .

The discharge unit 300 may be disposed within the chamber body 100 and adjacent to the inlet 101. The discharge unit 300 may discharge the spent secondary batteries introduced into the chamber body 100 from the input unit 200. That is, the discharge unit 300 can discharge the residual electrical energy remaining in the waste secondary battery before the shredding process progresses.

Additionally, the discharge unit 300 may include an upper discharge module 310 and a lower discharge module 320 in order to safely discharge the spent secondary battery. For example, a spent secondary battery brought into the discharge unit 300 may be brought in between the upper discharge module 310 and the lower discharge module 320 and discharged.

The upper discharge module 310 is disposed within the chamber body 100, and may be disposed on the upper part of the chamber body 100. The upper discharge module 310 may perforate the surface of the waste secondary battery so that the electrical energy remaining in the waste secondary battery is discharged to the outside. A plurality of upper discharge modules 310 may be arranged within the chamber body 100, and may be arranged in contact with each other in the direction in which the spent secondary batteries are moved within the chamber body 100. Additionally, the upper discharge module 310 may include an upper case 311, an upper discharge roller 312, an upper discharge terminal 313, an upper connection portion 314, and an upper elastic member 315.

The upper case 311 has a square box shape and can be formed so that the remaining surfaces except the lower surface are closed. That is, the upper case 311 may be formed to surround the upper discharge terminal 313. This is to block the upper discharge terminal 313, through which the current emitted from the waste secondary battery flows, from the outside.

The upper discharge roller 312 may be arranged to be spaced apart from the upper case 311 by a predetermined distance in the downward direction. Accordingly, the upper discharge rollers 312 may be arranged in a plurality in the direction of movement of the spent secondary batteries, and may be spaced apart from each other by the width of the upper case 311. In addition, the upper discharge roller 312 is rotated about the rotation axis 302 by a motor (not shown), and can be rotated in the inner direction of the chamber body 100 so that the spent secondary batteries are moved within the chamber body 100. there is.

Figure 2 is a diagram showing the upper discharge roller of the present invention.

Referring to FIG. 2, the upper discharge roller 312 according to the present invention may include a plurality of perforation pins 301 on the outer peripheral surface for perforating the surface of the spent secondary battery. The perforation pins 301 are formed to protrude from the outer peripheral surface of the upper discharge roller 312 and are disposed at predetermined intervals, and may have sharp ends to perforate the surface of the spent secondary battery. Therefore, when the waste secondary battery is sequentially moved in the direction of the shredding unit 400, the waste secondary battery can be moved while its upper surface is sequentially perforated by the perforation pin 301.

Additionally, the upper discharge roller 312 may be electrically separated from the chamber body 100, and a cooling unit (not shown) may be provided separately to cool the heat generated during the discharge process.

The upper discharge terminal 313 may be disposed within the upper case 311. The upper discharge terminal 313 may have a function of discharging residual electrical energy generated from a spent secondary battery. For example, the upper discharge terminal 313 may be electrically connected to the upper discharge roller 312 by an upper connection portion 314. That is, one end of the upper connection part 314 may be connected to the upper discharge terminal 313, and the other end of the upper connection part 314 may be connected to the rotation shaft 302 of the upper discharge roller 312. Therefore, the upper discharge roller 312 can sequentially perforate the waste secondary batteries while being rotated by the upper connection part 314 connected to both sides of the rotation shaft 302, and the current of the waste secondary battery released by the perforation is transmitted to the upper connection part. By (314), it can be made to flow from the upper discharge roller 312 to the upper discharge terminal 313.

Additionally, the plurality of upper discharge terminals 313 may each be connected to an external load resistor (not shown) to process the discharge current. For example, the residual current of the spent secondary battery flowing into the load resistance through the upper discharge terminal 313 can be discharged to the outside through grounding and processed, or converted into heat and recycled as an energy source. At this time, a plurality of load resistors connected to the ground can be connected to the ground in parallel in the form of a bridge, so that the installation space can be reduced and discharge efficiency can be improved.

The upper elastic member 315 is disposed on the upper connection portion 314, and the upper discharge roller 312 can be moved up and down by the elastic force of the upper elastic member 315. That is, the upper discharge roller 312 can be moved up and down by the elastic force of the upper elastic member 315 depending on the thickness of the spent secondary battery. Here, the upper elastic member 315 may be a spring with elastic force.

For example, waste secondary batteries may have different sizes and thicknesses depending on their type and shape. Accordingly, if the upper discharge roller 312 is fixed at the same height, in the case of a waste secondary battery with a small thickness, the perforation may not be properly performed due to the height difference between the roller and the waste secondary battery. However, the upper discharge module 310 according to the present invention can perforate the surface of the waste secondary battery regardless of the thickness of the waste secondary battery by using the upper elastic member 315.

For example, the height of the upper discharge roller 312 may be set to a height that can perforate the surface of a small-thick waste secondary battery. Therefore, when a waste secondary battery with a small thickness is inputted, the upper surface of the waste secondary battery with a small thickness may be perforated depending on the height of the upper discharge roller 312, and when a waste secondary battery with a larger thickness is inputted, the upper surface is perforated. The upper discharge roller 312 rises due to the contraction of the elastic member 315, thereby allowing the upper surface of the waste secondary battery with a large thickness to be perforated. After punching a waste secondary battery with a large thickness, the upper discharge roller 312 may descend due to the elastic force of the upper elastic member 315 and return to its original height.

Additionally, the upper discharge module 310 may be divided into multiple parts to discharge waste secondary batteries of different thicknesses.

Figure 3 is a view showing the separated form of the upper discharge module according to the present invention.

Figure 4 is a diagram showing the arrangement of a separated upper discharge module according to the present invention.

Here, FIG. 3(a) shows the upper discharge module 310 divided into two pieces, and FIG. 3(b) shows the upper discharge module 310 divided into three pieces.

Referring to FIGS. 3 and 4 , the upper discharge roller 312 may have a plurality of separated shapes in the longitudinal direction. For example, it may be divided into two as shown in FIG. 3(a), or may be divided into three as shown in FIG. 3(b). Additionally, it may have a separate form of three or more.

The upper discharge terminal 313 and the upper elastic member 315 may be respectively connected to the rotating shafts 302 at both ends of each separated upper discharge roller 312 by the upper connection portion 314. Additionally, each of the separated upper discharge rollers 312 may have the same height or may have different heights. In other words, by setting the height of each of the separated upper discharge rollers 312, it is possible to effectively discharge even if waste secondary batteries of different sizes and thicknesses are input.

For example, a plurality of divided upper discharge rollers 312 are arranged in the direction in which spent secondary batteries are moved. As shown in FIG. 4, the upper discharge rollers 312 are divided into two and three divided forms. It can be placed repeatedly. This is to ensure that the divided portions are staggered and arranged in a zigzag shape with respect to the adjacent upper discharge roller 312. This zigzag arrangement can prevent proper perforation when the spent secondary battery moves to the divided portion of the upper discharge roller 312. At this time, each divided upper discharge roller 312 may have the same height or may be arranged to have different heights. Therefore, even if waste secondary batteries with different thicknesses are continuously introduced at different positions by the divided upper discharge rollers 312, each divided upper discharge roller 312 operates separately depending on the thickness of the waste secondary batteries. As a result, waste secondary batteries of different thicknesses can be punched separately.

That is, the upper discharge module 310 for processing waste secondary batteries according to the present invention divides and arranges the upper discharge rollers 312, and mounts an elastic member 315 on each upper discharge roller 312 to reduce the size. Even if waste secondary batteries of different thicknesses are continuously introduced, an in-line method that can be sequentially perforated and discharged can be implemented. Additionally, the number of divisions and the arrangement of the upper discharge roller 312 may vary depending on the working environment in addition to the above-described embodiments.

Continuing with reference to FIG. 1 , the lower discharge module 320 may be disposed within the chamber body 100, but may be disposed opposite to the upper discharge module 310. The lower discharge module 320 may also perforate the surface of the waste secondary battery so that the electrical energy remaining in the waste secondary battery is discharged to the outside. For example, the upper discharge module 310 can discharge the waste secondary battery by perforating the upper surface, and the lower discharge module 320 can discharge the waste secondary battery by perforating the lower surface.

A plurality of lower discharge modules 320 may be disposed within the chamber body 100, and may be disposed in contact with each other in the direction in which the spent secondary batteries are moved within the chamber body 100. Additionally, the lower discharge module 320 may include a lower case 321, a lower discharge roller 322, a lower discharge terminal 323, a lower connection portion 324, and a lower elastic member 325.

The lower case 321 has a square box shape and can be formed so that the remaining surfaces except the upper surface are closed. That is, the lower case 321 may be formed to surround the lower discharge terminal 323.

The lower discharge roller 322 may be arranged to be spaced apart from the lower case 321 by a predetermined distance in the upward direction, and may be arranged to be spaced apart from the upper discharge roller 312 disposed at the top by a predetermined distance. At this time, the gap between the upper discharge roller 312 and the lower discharge roller 322 can be adjusted according to the size of the spent secondary battery. That is, the spent secondary battery can be moved between the upper discharge roller 312 and the lower discharge roller 322 by rotating the lower discharge roller 322. Accordingly, the lower discharge roller 322 is rotated about the rotation axis 305 by a motor (not shown), but may be rotated in the opposite direction to the rotation of the upper discharge roller 312.

Figure 5 is a diagram showing the lower discharge roller of the present invention.

Referring to FIG. 5 , like the upper discharge roller 312, the lower discharge roller 322 may have a plurality of perforated pins 301 capable of perforating the surface of a spent secondary battery on its outer circumferential surface. Therefore, the spent secondary batteries are sequentially moved toward the crushing unit 400 by the lower discharge roller 322, and are pressed between the upper discharge roller 312 and the lower discharge roller 322 by the perforated pin 301. Both the upper and lower surfaces can be perforated and moved. At this time, the plurality of lower discharge rollers 322 may be arranged adjacent to each other so that the spent secondary batteries move through the rollers.

For example, the lower discharge roller 322 may have a plurality of rollers 303 arranged along the longitudinal direction of the rotation axis 305, spaced apart from each other by the width of the roller 303. Additionally, the lower discharge rollers 322 adjacent to the crushing unit 400 may be arranged in a zigzag shape so that the rollers 303 are arranged to stagger each other as shown in FIG. 3 . That is, since the lower discharge rollers 322 adjacent to each other can be arranged so that the roller 303 is inserted and mounted in the space 304 spaced apart from each other, the gap between the adjacent lower discharge rollers 322 can be minimized. Therefore, when the waste secondary battery moves while its surface is perforated by the lower discharge roller 322, the moving flow of the waste secondary battery can be naturally maintained at the upper part of the lower discharge roller 322.

Additionally, the lower discharge roller 322 may be electrically separated from the chamber body 100, and a cooling unit (not shown) may be provided separately to cool the heat generated during the discharge process.

The lower discharge terminal 323 may be disposed within the lower case 321. The lower discharge terminal 323 may have a function of discharging residual electrical energy generated from a spent secondary battery. For example, the lower discharge terminal 323 may be electrically connected to the lower discharge roller 322 through the lower connection portion 324. That is, one end of the lower connection part 324 may be connected to the lower discharge terminal 323, and the other end of the lower connection part 324 may be connected to the rotation shaft 305 of the lower discharge roller 322. Therefore, the lower discharge roller 322 can sequentially perforate the spent secondary batteries while being rotated by the lower connection portion 324 connected to both sides of the rotating shaft 305, and the current of the spent secondary battery released by the perforation is transmitted to the lower connection portion. By (324), it can be made to flow from the lower discharge roller 322 to the lower discharge terminal 323.

Additionally, the plurality of lower discharge terminals 323 may each be connected to an externally formed load resistor to process the discharge current. For example, a plurality of load resistors connected to the ground may be connected to the ground in parallel in the form of a bridge.

That is, when the waste secondary battery is moved, the upper discharge module 310 can perforate the upper surface of the waste secondary battery and discharge it by the upper discharge terminal 313 connected to the load resistance, and at the same time, the lower discharge module ( 320) can perforate the lower surface of the waste secondary battery and discharge the residual current through the lower discharge terminal 323 connected to the load resistance. At this time, it is desirable to form the upper and lower discharge terminals 313 and 323 connected to each load resistance so that they do not cross at the front end of the load resistance. This is because if the polarity for discharging by perforating the upper surface of a waste secondary battery is different from the polarity for discharging by perforating the lower surface, a fire may occur due to a spark phenomenon due to a short circuit.

The lower elastic member 325 is disposed on the lower connection portion 324, and the lower discharge roller 322 can be moved up and down by the elastic force of the lower elastic member 325. That is, the lower discharge roller 322 may be moved up and down by the elastic force of the lower elastic member 325 depending on the thickness of the spent secondary battery. Accordingly, even if waste secondary batteries having different thicknesses are brought in by the upper elastic member 315 and the lower elastic member 325, both the upper and lower surfaces of the waste secondary batteries can be perforated to improve discharge efficiency.

Continuing to refer to FIG. 1 , the shredding unit 400 is disposed adjacent to the discharging unit 300 so that waste secondary batteries discharged in the discharging unit 300 are shredded. Additionally, the crushing unit 400 may be disposed adjacent to the discharging unit 300 and may be arranged in a vertical direction from the end of the discharging unit 300. Accordingly, the spent secondary batteries moved along the lower discharge roller 322 in the discharge unit 300 may freely fall from the end of the discharge unit 300 and be input into the shredding unit 400.

The shredding unit 400 may include a rough shredding roller 410, an intermediate shredding roller 420, and a fine shredding roller 430 to disassemble the input spent secondary batteries into small sizes while reducing the load on the shredding part 400. You can. At this time, the rough crushing roller 410, the intermediate crushing roller 420, and the fine crushing roller 430 may be arranged sequentially from top to bottom. In addition, the outer peripheral surface of the rough crushing roller 410, the intermediate crushing roller 420, and the fine crushing roller 430 includes a plurality of protruding protrusions 401 so that discharged waste secondary batteries are crushed by the pressure of the rollers. can do.

The rough crushing roller 410 is arranged to be closest to the discharge unit 300 and may be provided as a pair. A pair of rough crushing rollers 410 may rotate in opposite directions, and may cause waste secondary batteries introduced by free fall from the discharge unit 300 to be crushed between the rollers. Accordingly, the pair of rough shredding rollers 410 may be disposed at a predetermined distance apart so that the spent secondary batteries are shredded by pressure of the rollers.

The intermediate crushing roller 420 may be disposed adjacent to the rough crushing roller 410, but may be spaced a predetermined distance downward from the rough crushing roller 410. Accordingly, the waste secondary batteries shredded by the preliminary shredding roller 410 may freely fall and be input into the intermediate shredding roller 420. The intermediate crushing rollers 420 may be provided as a pair, and the pair of intermediate crushing rollers 420 may rotate in opposite directions. Additionally, the spacing between the pair of intermediate crushing rollers 420 may be arranged to be narrower than the spacing between the rough crushing rollers 410. Accordingly, the waste secondary batteries that have been crudely shredded in the rough shredding roller 410 may be inputted to the intermediate shredding roller 420 and shredded into a size smaller than the rough shredded size.

The fine crushing roller 430 may be disposed adjacent to the intermediate crushing roller 420, but may be spaced a predetermined distance downward from the intermediate crushing roller 420. Accordingly, the waste secondary batteries shredded by the intermediate shredding roller 420 may freely fall and be input into the fine shredding roller 430. The fine crushing rollers 430 may be provided in pairs, and the pair of fine crushing rollers 430 may rotate in opposite directions. Additionally, the spacing between the pair of fine crushing rollers 430 may be arranged to be narrower than the spacing between the intermediate crushing rollers 420. Accordingly, the spent secondary batteries that are intermediately shredded in the intermediate shredding roller 420 may be input into the fine shredding roller 430 and shredded into a size smaller than the intermediate shredded size. That is, the crushing unit 400 has a shape in which the gap between rollers gradually narrows as it moves from the rough crushing roller 410 to the fine crushing roller 430, thereby reducing the load on the crushing unit 400 and dispersing the waste secondary batteries evenly. It can be shredded.

The discharge unit 500 is disposed adjacent to the shredding unit 400 and communicates with the discharge port 102 to allow waste secondary batteries shredded in the shredding unit 400 to be discharged to the outside. For example, the discharge unit 500 may be disposed adjacent to the crushing unit 400, but may be disposed below the crushing unit 400. Accordingly, the spent secondary batteries shredded in the shredding unit 400 may freely fall and be input into the discharge unit 500.

Additionally, the discharge unit 500 may include a shredded material storage basket 510, a temporary storage valve 520, and a discharge valve 530.

The shredded material storage basket 510 is disposed below the shredding unit 400 and may include a collection space 501 where waste secondary batteries shredded in the shredding unit 400 are free-falled and collected. Additionally, the lower inner surface of the shredded material storage basket 510 may include an inclined surface 502 that slopes inward toward the bottom. Shredded waste secondary batteries that have fallen into the shredded material storage basket 510 by the inclined surface 502 can be collected into the outlet 102 located in the lower center.

The temporary storage valve 520 may be disposed between the shredding unit 400 and the shredded material storage basket 510. When the shredded material of the spent secondary battery shredded in the shredding unit 400 is inputted into the discharge unit 500, the temporary storage valve 520 can adjust the amount of the shredded material input through valve control.

The discharge valve 530 may be disposed below the discharge unit 500. More specifically, the discharge valve 530 may be disposed at the discharge port 102 through which the spent secondary battery is discharged to the outside. Accordingly, the amount of shredded materials from waste secondary batteries collected in the shredded material storage basket 510 can be adjusted to be discharged to the outside through control of the discharge valve 530.

For example, when shredded material accumulates in the shredded material storage basket 510, the discharge valve 530 opens to discharge the collected shredded material to the outside through the outlet 102, and the temporary storage valve 520 allows the shredded material to be stored in the shredded material storage basket 510. ) can be closed to prevent input. At this time, the crushing process continues in the crushing unit 400 and may be temporarily stored between the crushing unit 400 and the temporary storage valve 520. In addition, when all the shredded material collected in the shredded material storage basket 510 is discharged to the outside, the discharge valve 530 is closed again and the temporary storage valve 520 is opened, so that the temporarily stored shredded material is returned to the shredded material storage basket 510. It can be captured. That is, since the discharge and crushing processes can be performed continuously by controlling the temporary storage valve 520 and the discharge valve 530, work continuity can be maintained and work efficiency can be improved.

It is desirable to collect the shredded materials of spent secondary batteries discharged through the discharge unit 500 in a separate mobile collection container (not shown) that can be sealed so as not to be exposed to the atmosphere. In addition, it is preferable to place the shredded materials of spent secondary batteries in a nitrogen or inert gas atmosphere inside the mobile collection container. This is because when shredding a spent secondary battery, harmful gases such as fumes may be formed inside the chamber body 100, and when these harmful gases are exposed to the atmosphere, they may be harmful to the atmospheric environment and the human body. . Therefore, in order to prevent contamination generated when processing such waste secondary batteries, it is desirable to seal them so that they are not exposed to the outside. In addition, the gas generated from the spent secondary battery during the discharging or crushing process inside the chamber body 100 is discharged to the outside through the gas outlet 103, and is preferably connected to a scrubber for scrubber treatment.

Figure 6 is a flow chart showing the waste secondary battery treatment process of the present invention.

Referring to Figure 6, the processing process for waste secondary batteries according to the present invention will be described in detail.

First, the spent secondary batteries are brought into the chamber body 100 through the input unit 200 (S610). At this time, the inside of the chamber body 100 is free from explosions that may occur during the process before the spent secondary batteries are introduced. Alternatively, it may be filled with nitrogen or inert gas sprayed from the gas spray nozzle 220 of the input unit 200 to prevent fire. When the inside of the chamber body 100 is filled with nitrogen or an inert gas, the spent secondary batteries can be sequentially brought into the chamber body 100 by the loading roller 210 of the input unit 200.

Waste secondary batteries brought into the chamber body 100 by the input unit 200 are introduced into the discharge unit 300 and discharged. (S620) That is, the waste secondary batteries are disposed of on the upper discharge roller of the discharge unit 300. The waste secondary batteries are brought in between the 312 and the lower discharge roller 322, and the upper and lower surfaces are perforated by the rotation of the upper and lower discharge rollers 312 and 322, thereby forming the shredding unit 400. can be moved in any direction. At this time, the upper and lower surfaces of the spent secondary battery are perforated by the perforated pin 301, and the remaining electric energy can be discharged through the discharge terminals 313 and 323. In addition, by dividing the upper discharge roller 312 and installing elastic members 315 and 325 on the upper discharge roller 312 and lower discharge roller 322, respectively, even if waste secondary batteries of different sizes and thicknesses are continuously input. , can be processed sequentially in an inline manner.

Waste secondary batteries discharged in the discharging unit 300 are brought into the shredding unit 400 and shredded. (S630) When the waste secondary batteries that have been discharged are brought into the shredding unit 400, they are placed perpendicular to the discharging unit 300. It can be brought into the crushing unit 400 by freely falling by the crushing unit 400 arranged in this direction. The free-falling spent secondary batteries may first be brought into the rough shredding roller 410 to be crushed, and the rough-shredded spent secondary batteries may be brought into the free-falling intermediate shredding roller 420 and intermediately shredded. In addition, the intermediately shredded spent secondary batteries may freely fall and be brought into the fine shredding roller 430 and shredded into the final fine size.

The waste secondary battery shredded materials finely shredded in the shredding unit 400 may be discharged to the outside through the discharge unit 500. (S640) First, the temporary storage valve 520 is opened, and the discharge valve 530 is opened. In the closed state, the shredded material of the spent secondary battery can be collected in the shredded material storage basket 510 by free falling. When the shredded material collected in the shredded material storage basket 510 exceeds the collection capacity, the temporary storage valve 520 is closed and the discharge valve 530 is opened, so that the shredded material collected in the shredded material storage basket 510 can be discharged to the outside. there is. At this time, the crushing process in the crushing unit 400 continues and the shredded materials can be temporarily stored between the crushing unit 400 and the temporary storage valve 520, so that continuity of work can be maintained.

In addition, the shredded materials of waste secondary batteries discharged outside the chamber may be collected in a separate sealable mobile collection bin filled with nitrogen or an inert gas atmosphere to prevent exposure to the atmosphere, and the waste secondary batteries within the chamber body 100 may be collected. Gases generated by discharging or crushing the battery may be discharged to the outside through the gas outlet 103. At this time, gases discharged to the outside can be treated by a scrubber connected to the gas outlet 103.

As described above, the discharge module for processing waste secondary batteries simultaneously perforates the upper and lower surfaces of the waste secondary batteries by the upper discharge roller 312 and the lower discharge roller 322 connected to the discharge terminals to discharge the waste secondary batteries. Therefore, discharge efficiency can be improved. In addition, elastic members are disposed on each of the upper discharge roller 312 and lower discharge roller 322, and the upper discharge roller 312 is disposed separately in the longitudinal direction according to the working environment, so that waste secondary batteries of different thicknesses can be continuously disposed of. Even if it is put in, the waste secondary battery can be discharged by piercing it without exception. Furthermore, continuity of work can be maintained because waste secondary batteries can be discharged and shredded in an in-line manner regardless of the size and thickness of the waste secondary batteries.

Meanwhile, the embodiments of the present invention disclosed in the specification and drawings are merely provided as specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art that in addition to the embodiments disclosed herein, other modifications based on the technical idea of the present invention can be implemented.

100: Chamber body 101: Semi-inlet
102: outlet 103: gas outlet
200: input unit 210: loading roller
220: gas injection nozzle 300: discharge unit
301: perforated pin 302, 305: rotation axis
310: upper discharge module 311: upper case
312: upper discharge roller 313: upper discharge terminal
314: upper connection portion 315: upper elastic member
320: lower discharge module 321: lower case
322: lower discharge roller 323: lower discharge terminal
324: lower connection portion 325: lower elastic member
400: crushing part 401: protruding part
410: rough crushing roller 420: intermediate crushing roller
430: Fine crushing roller 500: Discharge unit
510: shredded material storage basket 520: temporary storage valve
530: discharge valve

Claims (14)

A plurality of upper discharge modules are disposed in the direction of movement of the spent secondary batteries to discharge them by perforating the upper part of the spent secondary batteries brought into the chamber body; and
A plurality of lower discharge modules are disposed opposite to the upper discharge module, and are perforated in the lower part of the spent secondary battery to discharge the spent secondary battery, and are moved to crush the discharged spent secondary battery,
The upper discharge module,
Upper case with open lower part; an upper discharge roller disposed to be spaced apart from the upper case and perforating the upper surface of the spent secondary battery by rotating the roller; an upper discharge terminal disposed within the upper case and discharging the residual electrical energy of the spent secondary battery perforated by the upper discharge roller to the outside at the same time as the perforated portion; an upper connection portion that has one end connected to the upper discharge terminal and the other end connected to the rotation axis of the upper discharge roller, and electrically connects the upper discharge terminal and the upper discharge roller; and an upper elastic member disposed at the upper connection portion and allowing the upper discharge roller to move up and down by elastic force,
The lower discharge module is,
Lower case with open top; a lower discharge roller disposed to be spaced apart from the lower case and moving while perforating the lower surface of the spent secondary battery by rotation of the roller, and disposed to be spaced apart from the upper discharge roller; a lower discharge terminal disposed within the lower case and discharging residual electrical energy of the spent secondary battery perforated by the lower discharge roller to the outside; a lower connection portion that has one end connected to the lower discharge terminal and the other end connected to the rotation axis of the lower discharge roller, and electrically connects the lower discharge terminal and the lower discharge roller; and a lower elastic member disposed at the lower connection portion and allowing the lower discharge roller to move up and down by elastic force. delete According to paragraph 1,
The upper discharge terminal is connected to a load resistance connected to ground, and the load resistance is connected in parallel between the upper discharge terminal and the ground. delete According to paragraph 1,
A discharge module for processing waste secondary batteries, wherein the outer peripheral surface of the upper discharge roller includes a plurality of protruding perforation pins for perforating the surface of the waste secondary battery. According to paragraph 1,
The upper discharge module is a discharge module for processing waste secondary batteries in which a plurality of the upper discharge rollers are arranged in a longitudinally divided form. According to clause 6,
A discharge module for processing waste secondary batteries, wherein the upper elastic members are each connected to the divided upper discharge rollers. According to clause 6,
The divided upper discharge rollers are disposed in a plurality in the direction in which the spent secondary batteries move, and are arranged in a zigzag shape so that the divided portions are staggered with respect to the upper discharge rollers adjacent to each other. Discharge module for. delete According to paragraph 1,
A discharge module for processing waste secondary batteries, wherein a plurality of the lower discharge rollers are arranged to include a space spaced apart by the width of the roller along the longitudinal direction of the rotation axis. delete According to paragraph 1,
The lower discharge rollers adjacent to each other are formed so that adjacent rollers are inserted into the spaced space, and the rollers are arranged in a zigzag shape. According to paragraph 1,
A discharge module for processing waste secondary batteries, wherein the outer peripheral surface of the lower discharge roller includes a plurality of protruding perforation pins for perforating the surface of the waste secondary battery. According to paragraph 1,
The lower discharge terminal is connected to a load resistance connected to ground, and the load resistance is connected in parallel between the lower discharge terminal and the ground.