KR101910611B1 - Discharge treatment device of lithium-related battery - Google Patents

Abstract

The present invention relates to a discharge process device of a lithium-related battery with recharging capabilities to enable repeated use. According to an embodiment of the present invention, the discharge process device of a lithium-related battery includes: a water supply unit for supplying water; a grinding unit which receives and stores the water from the water supply unit, stores waste secondary batteries, and grinds the waste secondary batteries; a slurry extracting unit which separates powder, resins, and metal substances ground in the grinding unit to discharge the resins and metal substances to the outside while separating slurry in the form of a mixture of water and powder; a conveying pump which conveys the slurry separated from the slurry extracting unit; a slurry storage unit which stores the slurry conveyed by the conveying pump and separates the water and powder from the slurry in a settled state; a press which separates solids and water by squeezing the slurry being discharged from the slurry storage unit; a wastewater recovery unit for supplying the water discharged from the press to the water supply unit; and a control unit controlling the operations of the water supply unit, grinding unit, slurry extracting unit, conveying pump, press, and wastewater recovery unit.

Description

[0001] The present invention relates to a discharge treatment device for a lithium-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lithium ion battery and a lithium ion battery, and more particularly, to a lithium ion battery and a lithium ion battery, which are capable of being recharged, To prevent pollution, and to prevent accidents such as ignition, explosion and fire.

Unless otherwise indicated herein, the contents set forth in this section are not prior art to the claims of this application and are not to be construed as prior art to be included in this section.

The secondary battery can be recharged and is likely to be small and large in capacity. Recently, as the demand of various electronic devices such as a camcorder, a portable computer, a mobile phone, a tablet PC, a battery of a drone, an ESS (energy storage device) and a battery mounted on an electric vehicle has increased, Research and development has been done a lot.

The lithium secondary battery is mainly manufactured by using lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, or the like as a cathode active material and using lithium metal, carbon, or the like as an anode active material.

Lithium-ion batteries and lithium battery batteries have a residual voltage. In the conventional treatment method, they are discharged in brine (salt water), dried and pulverized and crushed, and the resources are separated through a sorting process.

It is a conventional process to separate and treat the resin (separation membrane, aluminum foil), metal (copper, aluminum), powder (powder) (carbanne nickel, manganese, cobalt)

However, the problems are as follows when using the conventional processing method.

When the battery is live, the battery is not completely discharged. Therefore, it often occurs in the case of fire and explosion when crushing and crushing. It is inefficient to discharge salt water (brine) into the battery, A fire or explosion occurs in the process of making a hole in a cell or cutting it.

In addition, secondary and tertiary fires are occurring due to static electricity, spark, and overheating during crushing and crushing.

Korean Patent Application 10-2009-0101937.

The disclosed contents are crushed and crushed safely and crushed and pulverized in water in order to complete the discharge in advance and spark and flame will be generated in some water. However, the electric current is grounded to draw out a low voltage, and a grounding and discharging device (Waste paper, metals, powders, wastewater) separated and transported on a scrap-by-scrap basis, thereby completely solving the environmental problem of spattering, spontaneous ignition and explosion, and recycling rate of resources And the most effective treatment method that can reduce wastewater such as brine.

The object of the embodiment is to provide a water supply unit for supplying water; A crushing unit for supplying and storing water in the water supply unit, receiving the waste secondary battery, and crushing the waste secondary battery; A slurry extracting unit for separating the milled metal material, the resin stream and the powder, discharging the metal material and the resin stream to the outside, and separating the slurry comprising the powder and water mixture; A transfer pump for transferring the slurry separated in the slurry extracting unit; A slurry storage part for storing the slurry transferred from the transfer pump and separating the water and the powder by placing the slurry in a fixed position; A pressing unit for squeezing the slurry discharged from the slurry storing unit to separate water and solids; A wastewater recovery unit for supplying water discharged from the press to the water supply unit; And a control unit for controlling operations of the water supply unit, the crushing unit, the slurry extracting unit, the transfer pump, the press unit, and the waste water recovery unit.

According to the disclosed embodiment, the risk of explosion can be prevented by discharging and crushing the lithium-related battery in water, the metal can be collected and reused, the water can be recovered and reused, the resin can be collected and reused as a product in the firing furnace It is possible to reuse resources, thereby preventing environmental pollution and reducing costs.

1 is a configuration diagram of a discharge processing device for a lithium-related battery according to the present invention,
FIG. 2 is an enlarged view of the 'crushing unit' in the discharge processing apparatus of the lithium-related battery according to the present invention,
3 is an enlarged cross-sectional view of the 'slurry extracting unit' in FIG. 2,
FIG. 4 is a plan view of the 'pressure pad' in FIG. 2,
5 is a plan view of the 'rotary plate' in FIG. 2,
6 is a flow chart showing a treatment process by a discharge processing device of a lithium-related battery according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It does not mean anything.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator It should be noted that the definitions of these terms should be made on the basis of the contents throughout this specification.

2 is a magnified view of a 'crushing part' in the apparatus for discharging a lithium-related battery according to the present invention, and FIG. 3 FIG. 5 is a plan view of the 'rotary plate' in FIG. 2, and FIG. 6 is a plan view of the 'slurry extracting unit' in FIG. Fig. 6 is a flowchart showing a process of the discharge processing apparatus of the lithium-related battery according to the first embodiment.

As shown in FIGS. 1 to 5, an apparatus for discharging a lithium-related battery according to an embodiment includes a water supply unit 100 for supplying water; A crushing unit 200 for supplying and storing water in the water supply unit 100, receiving the waste secondary battery, and crushing the waste secondary battery; A slurry extracting unit 300 for separating the milled metal material, the resin stream, and the powder from the milled material, discharging the metal material and resin stream to the outside, and separating the slurry of the powder and water mixture; A transfer pump 400 for transferring slurry separated from the slurry extracting unit 300; A slurry storage part 500 for storing the slurry transferred from the transfer pump 400 and separating the water and the powder by placing the slurry in a fixed position; A press machine 600 for squeezing the slurry discharged from the slurry storage part 500 to separate water and solids; A wastewater recovery unit 700 for supplying the water discharged from the press machine 600 to the water supply unit 100; A control unit (not shown) for controlling operations of the water supply unit 100, the crushing unit 200, the slurry extracting unit 300, the transfer pump 400, the press unit 600 and the waste water collection unit 700 .

The water supply unit 100 is installed in a water supply pipe 120 and a water supply pipe 120 connected to the crushing unit 200 and connected to a lower portion of the water storage tank 110 to transfer water And a pump 130 for supplying the fuel.

The crushing unit 200 has a space formed therein to receive the waste secondary battery and an upper portion thereof is opened and a driving unit 210 is connected to a lower bottom surface of the crushing unit 200. A shaft 215 of the driving unit 210 passes through a lower bottom surface A crushing chamber (220) protruded and formed; A rotating plate 230 inserted into the pulverizing chamber 220 and connected to the shaft 215 of the driving unit 210 and disposed parallel to the lower surface and having a plurality of cutter blades 232 formed on the upper surface thereof; An inner housing 240 formed to be spaced apart from the outer side of the pulverizing chamber 220; A cylinder unit 250 mounted vertically on the inner housing 240 and having a cylinder rod 252 drawn downward; A pressure pad 260 mounted on the cylinder rod 252 and inserted into the pulverizing chamber 220 to pressurize the waste secondary battery and having a plurality of bites 262 protruded from the outer surface thereof; And a discharge port (229) formed in a lower bottom surface of the crushing chamber (220)

The pulverizing chamber 220 is attached with a discharge member 221 having a predetermined thickness on its outer surface so as to be spaced apart from the inner housing 240.

The discharging member 221 is made of a synthetic resin and a rubber material capable of absorbing shocks and capable of absorbing and absorbing vibrations generated in the pulverizing chamber so that the internal member 240 and the pulverizing chamber 220 are separated from each other So that the vibration is not directly transmitted to the inner housing 240, and thus noise and vibration are blocked.

In addition, in the process of generating the discharge by the residual voltage of the waste secondary battery in the pulverizing chamber 220, the discharge member 221 can be cut off so that the current does not flow to the outside, The current is prevented from being conducted to the outside.

By discharging the waste lithium secondary battery and / or the secondary battery cell (primary stabilization step) by forming the discharging member 221 in the pulverizing chamber 220, it is possible to prevent the secondary battery from being damaged during the crushing process of the secondary battery or the subsequent cobalt powder recovery process It is possible to reduce the risk of explosion of the secondary battery.

The pulverization chamber 220 stores water supplied from the water supply unit 100, and salt water may be applied in addition to pure water. For example, a brine solution having a concentration of 5% by weight can be applied.

The rotating plate 230 receives the rotational force of the driving unit 210 and rotates to crush the contents in the lower part corresponding to the pressing force of the upper pressing unit 260.

Since the volume of the contents (the state in which the waste secondary battery and the water are mixed) is gradually reduced, the volume gradually decreases. Accordingly, by continuously pressing the contents while the pressurizing unit is descending, the contents can be closely contacted with the rotating plate 230 with proper force, The effect can be increased.

As shown in FIG. 5, a plurality of cutter blades 232 protrude from the upper surface of the rotary plate 230.

The cutter blade 232 has a curved arc-shaped portion 2321 formed on one side thereof and a vertical portion 2322 formed on the other side thereof, and a plurality of grooves 2323 are formed.

The arc portion 2321 is formed toward the rotating direction. Therefore, the collision of the waste secondary battery with the arc shaped portion 2321 can alleviate the strong impact force, thereby reducing the risk of damage to the rotary plate 230 and the cutter blade 232, .

The inner housing 240 is connected to the inner circumferential surface of the crushing chamber 220 and the discharge member 221 attached to the outer circumferential surface of the crush chamber 220. The upper plate is formed on the inner housing 240 to support the pressing unit 260 and the cylinder unit 250 Can be combined.

The presser bar 260 is coupled to the cylinder rod 252 to reciprocate up and down to press the contents contained in the crusher chamber 220. The presser bar 260 is rotated at a constant force .

A plurality of bites 262 are formed on the bottom surface of the press table 260 so that the contents can be crushed while being rotated. The bite 262 has a curved arc portion 2621 at one side as shown in FIG. 4 A vertical portion 2622 is formed on the other side, and a groove 2623 is formed inwardly from the upper side.

The arc portion 2621 is formed in a rotating direction.

The bite 262 is formed to be larger than the cutter blade 232 of the rotary plate 230.

Accordingly, since the pressing belt 260 continuously pressurizes the contents with a constant force, the crushing ability can be improved, the fragments can be prevented from being splashed in the crushing process, 2621 collide with the waste secondary battery, the strong impact force can be somewhat alleviated, thereby reducing the damage of the press table 260 and the bite 262, but also assisting the continuous grinding force.

The driving unit 210 is for providing a pulverizing force by rotating the rotating plate 230 at a high speed. The driving unit 210 includes a motor 211 having a first pulley 213 and a second pulley 213, And a second pulley 214 connected to the shaft 215.

The inner enclosure 240 and the driving unit 210 are coupled to the outer enclosure 250 to receive the inner enclosure 240 and the driving unit 210 except for the motor 211, And a base frame 270 supporting the base frame 270.

The motor 211 is vertically mounted on the other side of the upper surface of the base frame 270, and the shaft of the motor 211 is mounted facing upward.

A first pulley 213 is mounted on the shaft of the motor 211 and a second pulley 214 is disposed at a horizontal position thereof and the first pulley 213 and the second pulley 214 are connected to a belt 216 .

The second pulley 214 is coupled to the shaft 215 connected to the rotating plate 230.

Therefore, when the motor 211 is driven, the rotation plate 230 can be stably rotated by the transmission of the rotational force of the belt 216.

Of course, a speed reducer may be provided on the first pulley 213 or the shaft 215 to control the rotation speed of the appropriate rotary plate 230.

The slurry extracting unit 300 includes a discharge pipe 320 connected to the lower discharge port 229 of the crushing chamber 220 of the crushing unit 200. And a separator (340) connected to the discharge pipe (320) and separating the mixture of the pulverized metal material, the resin stream and the powder into water and a solid material.

As shown in FIGS. 2 and 3, the separator 340 includes a body 342 connected to the discharge pipe 320 and having a space therein. And a screen net 344 formed inside the body 342 and having a plurality of through holes to separate the water and the solid object.

The screen net 344 is formed in a diagonal direction in the main body 342, and a solid object such as a metal or a resin stream having a large particle size to pass water can be caught.

And a discharging means is included for discharging the solid object filtered at the screen net 344 to the outside.

The discharging means according to one embodiment may comprise a horizontally mounted screw shaft 346 and a driver for driving the screw shaft 346.

The screw shaft 346 is formed inside the main body 342 and horizontally on one side of the screen net 344.

A separate driving part for driving the screw shaft 346 is provided and rotated or connected to one side of the motor so as to receive power and rotate.

The solid object can be gradually discharged to the outside by the helical wings formed on the outer circumferential surface of the screw shaft 346.

Accordingly, the metal materials and the synthetic resin materials generated by crushing the waste secondary battery are large in size and can be filtered by the screen net 344 and discharged to the outside through the discharge means.

A valve 330 is formed in the discharge pipe 320 connected to the discharge port 229 of the crushing chamber 220 and communicating with the separator 340.

The valve 330 may be an electromagnetic valve that is manually opened or closed or is opened / closed remotely by a signal from the controller.

The operation of the valve 330 allows the separator 340 to block the transfer of the mixed liquid in which the metal material, the resin flow, and the powder are mixed, or to control the inflow amount.

A processing process using the discharge processing device of the lithium-related battery thus constructed will be described with reference to FIG.

Step (S1): The recovered waste secondary battery is put into the crushing chamber 220, and water is supplied from the water supply unit 100 so as to have a proper water level.

In this process, a discharge is performed so that the electric current remaining in the waste secondary battery is discharged through the water.

Step 2 (S2): Thereafter, the driving unit 210 is turned on, the rotating plate 230 is rotated, and the discharged waste secondary battery starts to be crushed.

The contents are gradually pressurized by the pressurization of the press table 260, so that the pulverization is carried out after the pulverization, whereby the particles gradually become smaller.

A pulverizing step is performed in which the particle size is approximately 1 cm or less.

Step 3 (S3): The pulverized particles are slurried together with water and subjected to a separation process in a slurry extracting unit.

That is, the water is introduced into the separator 340 through the discharge pipe 320, and the metal and resin streams are separated by the discharging means and discharged to the outside.

Only the slurry in which fine powder and water are mixed passes through the screen net 344 and is stored under the separator 340 to perform the slurry separation step.

Step S4: The slurry is stored in the slurry storage part 500, and then the water and the powder are separated by keeping the slurry for a predetermined time, and the powder is submerged in the lower part of the slurry storage part 500.

5 Step (S5): Subsequently, the slurry settled in the lower part of the slurry storage part 500 is discharged to the press machine 600, and water is squeezed by a pressing process.

After squeezing out the water, the cake is discharged in a solid state.

The discharged cake is plasticized in a sintering furnace (not shown) and commercialized.

On the other hand, the water discharged from the press process is recovered in the waste water recovery unit 700 and supplied to the water supply unit 100 again to be reused.

Therefore, it is possible to recycle the metal, resin, powder, and water generated from the waste secondary battery, thereby preventing environmental pollution and reducing resource waste.

It will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, and all such changes and modifications are intended to be within the scope of the appended claims. It is self-evident.

100: water feeder 200: crusher
300: slurry extracting unit 400: transfer pump
500: slurry storage part 600: press machine
700: waste water recovery unit

Claims (9)

A water supply part for supplying water;
A crushing unit for supplying and storing water in the water supply unit, receiving the waste secondary battery, and crushing the waste secondary battery;
A slurry extracting unit for separating the milled metal material, the resin stream and the powder, discharging the metal material and the resin stream to the outside, and separating the slurry comprising the powder and water mixture;
A transfer pump for transferring the slurry separated in the slurry extracting unit;
A slurry storage part for storing the slurry transferred from the transfer pump and allowing the water and the powder to separate from each other;
A pressing unit for squeezing the slurry discharged from the slurry storing unit to separate water and solids;
A wastewater recovery unit for supplying water discharged from the press to the water supply unit;
And a control unit for controlling operations of the water feed unit, the crushing unit, the slurry extracting unit, the feed pump, the press unit, and the waste water recovery unit,
Wherein the crushing unit comprises:
A pulverizing chamber in which a space is formed so that the waste secondary battery is accommodated, an upper portion is opened, a driving portion is connected to a lower bottom, and a shaft of the driving portion is protruded through the lower bottom;
A rotating plate inserted into the pulverizing chamber and rotated by engaging with the shaft of the driving unit and disposed parallel to the lower surface and having a plurality of cutter blades on the upper surface thereof;
An inner housing formed to be spaced apart from the outer side of the crushing chamber;
A cylinder unit vertically mounted on the upper portion of the inner housing and having a cylinder rod drawn downward;
A pressurizing pad mounted on the cylinder rod and inserted into the pulverizing chamber to pressurize the waste secondary battery, and a plurality of bites projecting from the outer surface;
And a discharge port formed in a lower bottom surface of the crushing chamber,
Wherein the pulverizing chamber is formed with a discharge member having a predetermined thickness on the outer surface so as to be spaced apart from the inner housing,
The slurry extracting unit
A discharge pipe connected to the bottom discharge port of the crushing chamber of the crushing section so as to communicate therewith;
And a separator connected to the discharge pipe and separating the mixed liquid of the pulverized metal material, the resin stream and the powder into water and a solid material,
The separator
A body connected to the discharge pipe so as to communicate therethrough and having a space therein;
A screen net formed inside the main body and having a plurality of through holes to separate water and solid objects;
And a discharge electrode for discharging the lithium-based battery. delete delete The method according to claim 1,
The discharge member is made of a synthetic resin and a rubber material so as to block current and vibration generated in the crushing chamber,
And the inner housing and the pulverizing chamber are spaced apart from each other. The method according to claim 1,
The driving unit
And a second pulley connected to the first pulley by a belt and formed on the shaft. 2. The apparatus of claim 1, wherein the first pulley comprises a shaft. delete delete The method according to claim 1,
And a discharge unit formed inside the body of the slurry extracting unit and formed on one side of the screen net to discharge the solid object to the outside. 9. The method of claim 8,
Wherein the discharging means comprises a screw shaft horizontally mounted and a driving unit driving the screw shaft so that the solid object can be discharged to the outside by the helical wing formed on the outer circumferential surface of the screw shaft. Discharge treatment device.

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