CN214988904U - Continuous discharge is with electrically conductive conveying mechanism and continuous safe discharge device of old and useless lithium cell - Google Patents

Abstract

The utility model provides a conductive conveying mechanism for continuous discharging of waste lithium batteries, which comprises an upper conductive conveying belt and a lower conductive conveying belt which are closed and in an annular shape and move synchronously, wherein the inner ring of the upper conductive conveying belt is provided with a plurality of conductive graphite compression rollers which are arranged at intervals; the inner ring of the lower conductive conveying belt is provided with a plurality of conductive graphite carrier rollers which are arranged at intervals, the upper conductive conveying belt and the lower conductive conveying belt are arranged at intervals, a plurality of waste lithium batteries to be discharged are clamped between the upper conductive conveying belt and the lower conductive conveying belt at intervals one by one, and a discharging loop is formed by the serially connected adjustable resistor, the ammeter and the switch, so that the waste lithium batteries are driven to move by the upper conductive conveying belt and the lower conductive conveying belt to complete a discharging process. The utility model also provides a continuous safe discharge device who has above-mentioned electrically conductive conveying mechanism. The utility model discloses an old and useless lithium cell is in batches, discharge treatment in succession, makes old and useless lithium cell discharge automation, and discharges completely, abundant, safety, has improved old and useless lithium cell efficiency of discharging by a wide margin.

Description

Continuous discharge is with electrically conductive conveying mechanism and continuous safe discharge device of old and useless lithium cell

Technical Field

The utility model belongs to the technical field of old and useless lithium cell is retrieved, in particular to old and useless lithium cell discharges in succession with electrically conductive conveying mechanism and old and useless lithium cell safe discharge device in succession.

Background

With the increasing shortage of fossil resources and the urgent need for environmental protection, it has become widely recognized to develop electric vehicles to reduce resource consumption and environmental pollution. By 6 months in 2019, the holding amount of the Chinese new energy automobiles is 344 thousands of automobiles, which account for 1.37 percent of the total amount of the automobiles; wherein, the pure electric vehicles hold 281 ten thousands of vehicles, accounting for 81.74% of the total amount of the new energy vehicles. According to the average service life of the power battery measured and calculated in 5-8 years, China began to meet the coming-up of large-scale decommissioning tide of the power lithium iron phosphate battery in 2019. The recovery amount of the retired power battery reaches 25GWH in 2020, and accounts for about 14.2% of the installed service total amount of the power battery. Internationally, a great deal of new energy automobiles in various countries and electronic consumer goods are rapidly increased, particularly, the demand of the electronic market and the electric vehicle market for lithium ion batteries is rapidly increased, the use amount of the lithium ion batteries is rapidly promoted to increase year by year, and the urgency of recycling and properly treating waste batteries is bound to be caused.

The waste lithium battery contains valuable metals such as nickel, cobalt, manganese, lithium and the like, has high recovery value and huge market space. At present, the lithium battery recovery technology is not mature, the lithium battery recovery market is far from reaching a saturated state, and the advantages and the key points of most enterprises focusing on the recovery and utilization of lithium batteries are mainly put in the technical field of chemical separation and purification of the recovered waste lithium batteries.

The retired lithium batteries have different energy residual amounts, so that the application field of the power lithium batteries can be widened through echelon recycling, the high-quality retired batteries can meet the application requirements of scenes such as peak clipping and valley filling of an energy storage system, a low-speed electric vehicle and a smart grid, the application benefits of the power lithium batteries are improved, and the retired period of part of the power lithium batteries is delayed; the waste lithium battery which cannot meet the requirement of the graded recycling of the retired lithium battery must be properly discharged and recycled, and the recycling and regeneration of the waste lithium battery form a closed loop of a material energy flow structure. However, the retired waste lithium batteries still have a certain amount of residual electricity, such as improper discharge treatment, explosion and combustion accidents are easily generated during the stacking and treatment processes of the batteries, and the explosion and combustion events of the waste lithium batteries occur frequently.

In the prior art, 3.0-8.0% of inorganic salt aqueous solution is mainly used for soaking the waste lithium batteries for 3-10 days, and the salt solution has good conductivity and safety, wide sources and low price and can be used for multiple times, so that the method for realizing safe discharge of the waste lithium batteries by using the salt aqueous solution becomes one of the widely-used methods. However, the brine discharge also has a relatively serious problem of environmental pollution, such as generation of a large amount of hydrogen, chlorine, oxygen and the like, and a large amount of brine is carried out by gas and may float in the air to generate secondary pollution to the surrounding environment; after the brine is discharged for many times, the brine solution can generate serious electrochemical corrosion on the waste lithium battery, and simultaneously, a large amount of impurities are introduced, belong to dangerous wastes, and generate secondary pollution; meanwhile, the brine solution after multiple discharges often contains a large amount of brown flocculent precipitates, and the brown flocculent precipitates can be crushed and sorted along with the waste lithium batteries and then introduced into a positive electrode mixture and a negative electrode mixture, namely black powder, so that the subsequent impurity removal, separation and purification of valuable metals are greatly influenced, the process flow is complex, more other chemical agents are used, the wastewater treatment capacity is increased, and the impurity removal cost is greatly increased.

Chinese patent literature discloses a plurality of old and useless lithium cell discharge apparatus, adopts twice the mode of discharging for some, needs a plurality of intermediate conversion mechanisms, and the structure is complicated, and area is big, and the second discharge need be realized through paining of plus conducting agent, and the discharge efficiency is low, and it is big still to have the conducting agent use amount moreover, and is not recyclable, introduces new impurity chemical composition simultaneously, can increase the separation of follow-up old and useless lithium cell valuable chemical component and select separately the degree of difficulty. In addition, the feeding and discharging of the waste lithium batteries are stacked together, so that the collision or contact of the positive electrode and the negative electrode is easily caused, and the combustion and explosion accidents are easily caused. The composite board made of the special metal material containing the foam air holes is high in cost, the number of discharged batteries is limited every time, feeding and discharging of the waste batteries are very inconvenient, and the working efficiency is low. The quick discharge device for the waste lithium batteries adopts the conductive mica powder as a discharge medium to realize quick discharge of the batteries, the discharge medium is easily adsorbed on the surfaces of the single batteries, a large amount of water is needed for cleaning after discharge, and meanwhile, conductive components introduced by the conductive mica powder can be firmly stocked in short-circuit grooves on the positive electrode and the negative electrode of the single batteries as impurities, so that the separation and purification difficulty of a rear-end battery is increased, and the separation and purification process flow and the operation cost are greatly increased.

Therefore, there is a need to address the above-mentioned deficiencies of the prior art.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned prior art not enough, at first provide an old and useless lithium cell is discharged in succession and is used electrically conductive conveying mechanism, can make old and useless lithium cell once accomplish the discharge process in the removal, and simple structure, it is with low costs, can realize industrial production.

The utility model provides a continuous discharge is with electrically conductive conveying mechanism for the continuous safe discharge of old and useless lithium cell, including last electrically conductive conveyer belt and lower electrically conductive conveyer belt, go up electrically conductive conveyer belt and electrically conductive conveyer belt down are closed endless belt, go up electrically conductive conveyer belt inner ring be equipped with can drive this go up electrically conductive upper drive wheel that moves, go up from the driving wheel and locate go up between driving wheel and the last driven wheel a plurality of interval arrangement's electrically conductive graphite compression roller; the lower conductive conveying belt is internally and annularly provided with a lower driving wheel, a lower driven wheel and a plurality of conductive graphite carrier rollers, wherein the lower driving wheel and the lower driven wheel synchronously rotate with the upper driving wheel and the upper driven wheel and can drive the lower conductive conveying belt to move, the conductive graphite carrier rollers are arranged between the lower driving wheel and the lower driven wheel and are arranged at intervals, the upper conductive conveying belt and the lower conductive conveying belt are arranged at intervals up and down, so that a plurality of waste lithium batteries to be discharged are clamped between the upper conductive conveying belt and the lower conductive conveying belt at intervals one by one, and the upper conductive conveying belt and the lower conductive conveying belt drive the waste lithium batteries to gradually complete a continuous discharging process in moving.

Optionally, each conductive graphite press roller and each conductive graphite carrier roller are arranged up and down oppositely, and the centers are on the same straight line.

Optionally, a plurality of concave positions or stoppers which can be matched with the positive and negative electrodes of the waste lithium batteries to be discharged are respectively arranged at intervals at the positions, opposite to the outer rings of the upper conductive conveying belt and the lower conductive conveying belt, so that the waste lithium batteries clamped between the upper conductive conveying belt and the lower conductive conveying belt are positioned in the concave positions or stoppers of the upper conductive conveying belt and the lower conductive conveying belt.

Optionally, a lead-in angle for facilitating placement of each waste lithium battery is arranged at an inlet where the waste lithium battery enters between the upper conductive conveying belt and the lower conductive conveying belt; and a leading-out angle which is convenient for each waste lithium battery to fall off after the discharge is finished is arranged at the outlet of each waste lithium battery.

Optionally, a front tension pulley is arranged at the front end of the annular belt inner ring of the upper conductive conveying belt, the front tension pulley is located between the upper driving wheel and a first conductive graphite pressing roller at the inlet of the waste lithium battery, and the upper driving wheel is higher than the front tension pulley in height, so that the front end of the upper conductive conveying belt forms the leading-in angle; and a rear tensioning wheel is arranged at an outlet of the waste lithium battery, the rear tensioning wheel is arranged between the upper driven wheel and the last conductive graphite compression roller, and the upper driven wheel is higher than the rear tensioning wheel, so that the rear end of the upper conductive conveying belt forms the lead-out angle.

The utility model discloses continuous discharge has following technological effect with electrically conductive conveying mechanism:

(1) the utility model discloses a conductive conveying mechanism can make old and useless lithium cell press from both sides tightly at last conductive conveyor belt under and between the conductive conveyor belt, and old and useless lithium cell accomplishes the process of discharging one by one in the process that the conductive conveyor belt drives the removal by last conductive conveyor belt under with, can improve old and useless lithium cell efficiency of discharging, has guaranteed that discharging of each old and useless lithium cell is complete, abundant.

(2) The utility model discloses an electrically conductive conveying mechanism can make the old and useless lithium cell at last electrically conductive conveyer belt and the interval setting in the removal between the electrically conductive conveyer belt down, has effectively guaranteed the security of old and useless lithium cell discharge process. The lengths and the moving speeds of the upper conductive conveying belt and the lower conductive conveying belt can be set as required, the discharging time and the discharging speed of the waste battery can be adjusted, the discharging time and the discharging speed can also be adjusted and controlled through the adjustable resistor, and the production efficiency and the safety are improved.

(3) The utility model discloses a conductive conveying mechanism, last conductive conveyor belt, lower conductive conveyor belt, conductive graphite compression roller and the conductive graphite bearing roller of its adoption both can regard as the removal component that carries the old and useless lithium cell discharge, can regard as the conductive element in the return circuit that discharges again, and each component all adopts the graphite conducting material who is cheap easily obtained, and new impurity can not be introduced to the discharge process, not only can guarantee the completeness of discharging, has reduced old and useless lithium cell recovery cost moreover.

The utility model also provides a continuous safe discharge device of old and useless lithium cell, including above-mentioned continuous discharge with electrically conductive conveying mechanism in go up electrically conductive conveyer belt with between the electrically conductive conveyer belt down, adjustable resistance, ampere meter and switch have concatenated, and press from both sides tightly go up electrically conductive conveyer belt with each old and useless lithium cell between the electrically conductive conveyer belt forms the return circuit that discharges together down.

Optionally, a feeding mechanism is arranged at an inlet where the waste lithium batteries are fed into the conductive conveying mechanism, and the feeding mechanism is provided with a multi-degree-of-freedom material taking clamp and is used for taking out the waste lithium batteries from the material box one by one and feeding the waste lithium batteries into the placing positions arranged at intervals of the conductive conveying mechanism.

Optionally, a visual recognition system is further provided at an inlet where the waste lithium batteries are fed into the conductive conveying mechanism, so that the feeding mechanism can place the waste lithium batteries between the upper conductive conveying belt and the lower conductive conveying belt according to the polar positions.

The utility model discloses discharge device still includes the air-cooled system, the air-cooled system has a plurality of cold wind orientations that can make in the electrically conductive conveying mechanism move the supply-air outlet of old and useless lithium cell.

The utility model discloses discharge device is still including being used for the support electrically conductive conveying mechanism's electrically conductive graphite fixed bed, electrically conductive graphite fixed bed is formed by the graphite suppression of electrically conductive heat conduction, electrically conductive graphite fixed bed is equipped with the insulation protection pad with the supporting foot bottom of ground contact.

Adopt the utility model discloses the continuous safe discharge device of old and useless lithium cell has not only realized old and useless lithium cell in batches, the processing of discharging in succession, make old and useless lithium cell discharge automation, the efficiency of old and useless lithium cell discharge has been improved by a wide margin, and can guarantee that each old and useless lithium cell discharges completely, fully, have fine effect of discharging, whole process adopts the physical method to go on, do not need any industrial chemicals, avoided market mainstream technical brine discharge to produce polluted environment phenomena such as a large amount of waste gas waste liquids, can not produce secondary pollution, accord with the environmental protection requirement.

The utility model discloses simple structure, it is with low costs, accord with the demand of present industry, be favorable to industrialization large-scale production, have very extensive application prospect.

Drawings

Fig. 1 is a schematic view of an embodiment of a continuous and safe discharge device for waste lithium batteries.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

It should also be noted that the terms "one end", "the other end", "the front end", "the rear end", "the side end", "the outside" and the like in the embodiments of the present invention are only relative terms or are referred to the normal use state of the product, or are referred to based on the position shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be considered as limiting.

Referring to fig. 1, the utility model firstly provides a continuous discharge is with electrically conductive conveying mechanism 4 for the continuous safe discharge of old and useless lithium cell, including last electrically conductive conveyer belt 421 and lower electrically conductive conveyer belt 411, instituteThe upper conductive conveying belt 421 and the lower conductive conveying belt 411 are both closed annular conveying belts, an upper driving wheel 426, an upper driven wheel 425 and a plurality of conductive graphite pressing rollers 422 which are arranged at intervals are arranged on the inner ring of the upper conductive conveying belt 421, the upper conductive conveying belt 421 is driven by the upper driving wheel 426 to move, and each conductive graphite pressing roller 422 is arranged between the upper driving wheel 426 and the upper driven wheel 425 and is matched with the upper conductive conveying belt 421 to rotate; the inner ring of the lower conductive conveying belt 411 is provided with a lower driving wheel 416, a lower driven wheel 418 and a plurality of conductive graphite carrier rollers 412 which are arranged at intervals and can synchronously rotate with an upper driving wheel 426, the lower conductive conveying belt 411 is driven by the lower driving wheel 416 to synchronously move with the upper conductive conveying belt 421, and each conductive graphite carrier roller 412 is arranged between the lower driving wheel 416 and the lower driven wheel 418 and is matched with the lower conductive conveying belt 411 to rotate. The upper driving wheel 426 and the lower driving wheel 416 are driven by a power mechanism to synchronously rotate, the power mechanism adopts a speed-regulating stepping motor 415, and the speed-regulating stepping motor 415 can be respectively connected with the upper driving wheel 426 and the lower driving wheel 416 through a transmission mechanism, so that power is transmitted to the upper driving wheel 426 and the lower driving wheel 416 to synchronously rotate, and further, the upper conductive conveying belt 421 and the lower conductive conveying belt 411 are driven to synchronously move. By adopting the speed-regulating stepping motor 415, the moving speed of the upper conductive conveying belt 421 and the lower conductive conveying belt 411 can be adjusted according to the discharging requirement, so that the waste lithium battery 3 can be fully discharged once in moving, the discharging requirement is met, and the discharging is very convenient. The upper conductive conveying belt 421 and the lower conductive conveying belt 411 are arranged at an upper-lower interval, and the distance between the upper conductive conveying belt 421 and the lower conductive conveying belt 411 enables a plurality of waste lithium batteries 3 to be discharged to be clamped between the upper conductive conveying belt 421 and the lower conductive conveying belt 411, and through synchronous movement of the upper conductive conveying belt 421 and the lower conductive conveying belt 411, support of the conductive graphite carrier roller 412 and clamping of the conductive graphite press roller 422 enable the waste lithium batteries 3 to be always clamped between the upper conductive conveying belt 421 and the lower conductive conveying belt 411 by the conductive graphite carrier roller 412 and the conductive graphite press roller 422 in movement, and a continuous discharging process is gradually completed in movement. The upper conductive conveyor belt 421 and the lower conductive conveyor belt 411 are both composed of a belt core and a conductive layer, wherein the belt core is composed of single-layer longitudinally arranged steel wire ropes, and the conductive layer can be covered on the belt core or mixed with the belt coreThe conductive layer is formed by pressing or mixing rubber, conductive powder and an additive, wherein the conductive powder is formed by mixing one or two of conductive carbon powder and graphite cathode powder, the rubber is formed by mixing one or two of fluororubber, nitrile rubber or vulcanized rubber, the conductive powder accounts for 20-60% of the total mass of the conductive layer, the rubber accounts for 30-70% of the total mass of the conductive layer, and the balance of the additive can be dibutyl phthalate, short carbon fibers of 3-5 mm and the like. The resistivity of the upper conductive conveying belt 421 and the lower conductive conveying belt 411 is (5.0-18.0) × 10^-6Omega, m. The conductive graphite press roll 422 and the conductive graphite carrier roller 412 are formed by pressing graphite materials and performing high-temperature treatment, and negative graphite powder recovered from waste lithium batteries can be adopted, so that the manufacturing cost can be reduced, and resources can be saved. The conductive graphite press roll 422 and the conductive graphite carrier roller 412 have high conductivity, and also have the characteristics of corrosion resistance, high temperature resistance, high strength, light weight and the like. The utility model discloses in the above-mentioned structure, can make old and useless lithium cell 3 press from both sides tightly accomplish the discharge process gradually among the last conductive conveyor belt 421 that removes and lower conductive conveyor belt 411, it is automatic to have realized old and useless lithium cell, in batches, discharge in succession and handle, be used for driving the component that old and useless lithium cell 3 removed simultaneously- -go up conductive conveyor belt 421, lower conductive conveyor belt 411, conductive graphite compression roller 422 and conductive graphite bearing roller 412 are electrically conductive element, thus, go up conductive conveyor belt 421, lower conductive conveyor belt 411, conductive graphite compression roller 422 and conductive graphite bearing roller 412 both can regard as the part that drives old and useless lithium cell 3 discharge in-process and remove, can regard as electrically conductive part again, make whole discharging equipment all have electrically conductive property, discharge for old and useless lithium cell 3 fully provides reliable guarantee. Moreover, because the contact area between the positive and negative electrodes of the lithium batteries and the upper conductive conveying belt 421 and the lower conductive conveying belt 411 is large, and the upper and lower opposite arrangement of the conductive graphite pressing roller 422 and the conductive graphite carrier roller 412 can tightly clamp each waste lithium battery 3 between the upper conductive conveying belt 421 and the lower conductive conveying belt 411, the waste lithium batteries 3 can be prevented from toppling over in movement, a discharging loop in the discharging process is smooth, the discharging reliability and the discharging sufficiency of each waste lithium battery are highly guaranteed, and a good discharging effect is achieved. In addition, each of the waste lithium batteries 3 is guided in the upper conductive conveyor 421 and the lower conductive conveyorThe electric conveyer belts 411 are arranged at intervals, so that the single lithium batteries form a certain distance, potential safety hazards caused by mutual collision of the lithium batteries can be avoided, the continuous discharge time can be ensured, the residual voltage of the batteries is lower than 1.0 volt-ampere full voltage generally only in 2-4 hours, and the electric conveyer belts have the characteristics of high safety, high discharge efficiency and the like. Moreover, the lengths and the moving speeds of the upper conductive conveying belt 421 and the lower conductive conveying belt 411 can be set according to the discharging requirement, so that the discharging time and the discharging speed of the waste lithium battery 3 can be adjusted, and the discharging time and the discharging speed can also be adjusted and controlled through an adjustable resistor. Meanwhile, the distance between the upper conductive conveying belt 421 and the lower conductive conveying belt 411, and the number and arrangement of the conductive graphite pressing roller 421 and the conductive graphite carrier roller 412 can be determined according to the size and the discharge requirement of the waste lithium battery in actual production, and generally 10-35 single waste lithium batteries can be accommodated.

Referring to fig. 1, in the specific embodiment of the conductive conveying mechanism of the present invention, each of the conductive graphite pressing rollers 422 and each of the conductive graphite supporting rollers 412 are disposed opposite to each other, and the centers of the conductive graphite pressing rollers and the conductive graphite supporting rollers are on the same straight line. When the waste lithium batteries 3 are clamped between the upper conductive conveying belt 421 and the lower conductive conveying belt 411 between the conductive graphite pressing roller 422 and each conductive graphite carrier roller 412, the conductive graphite pressing roller 422 and the conductive graphite carrier roller 412 which are arranged in the same straight line can press the waste lithium batteries 3 tightly with the minimum pressing force, so that the waste lithium batteries 3 are prevented from being toppled in moving. A pressing roller insulating protective sleeve 423 and a carrier roller insulating protective sleeve 413 are respectively sleeved at the two outward side ends of each conductive graphite pressing roller 422 and each conductive graphite carrier roller 412 to protect the safety of operators.

Referring to fig. 1, in the specific embodiment of the conductive conveying mechanism of the present invention, a plurality of regularly arranged concave positions or blocks (concave positions shown in the embodiment of fig. 1) are respectively spaced at the positions where the outer rings of the upper conductive conveying belt 421 and the lower conductive conveying belt 411 are opposite, that is, the outer sides of the waste lithium batteries 3 are clamped by the upper conductive conveying belt 421 and the lower conductive conveying belt 411, the concave positions are inward recessed from the outer sides of the upper conductive conveying belt 421 and the lower conductive conveying belt 411, wherein the upper conductive conveying belt 421 is provided with an upper concave position 420 or an upper block that can be adapted to the positive electrodes of the waste lithium batteries 3, the lower conductive conveying belt 411 is provided with a lower concave position 417 or a lower block that can be adapted to the negative electrodes of the waste lithium batteries 3, the upper concave position 420 or the upper block and the lower concave position 417 or the upper block are matched with the types of the waste lithium batteries 3 (such as cylindrical 18650, cylindrical 26650, square lithium batteries, etc.), and are aligned with each other, and the waste lithium batteries 3 are inserted and positioned in the upper concave position 420 or the lower stopper and the lower concave position 417 or the upper stopper when moving. As a preferable scheme, the upper concave position 420 or the upper stopper and the lower concave position 417 or the lower stopper are respectively opposite to the conductive graphite press roll 422 and the conductive graphite carrier roller 412, that is, the center of the upper concave position 420 or the upper stopper and the lower concave position 417 or the lower stopper is on the same straight line with the center of the conductive graphite press roll 422 and the conductive graphite carrier roller 412, so that the conductive graphite press roll 422 and the conductive graphite carrier roller 412 can be tightly pressed on the moving waste lithium battery 3 through the upper conductive conveyor belt 421 and the lower conductive conveyor belt 411, the clamping effect is good, the effective interval of the waste lithium battery 3 in the moving process can be realized, the burning and explosion accidents caused by collision or contact of positive and negative electrodes when the waste lithium batteries are stacked together can be avoided, the waste lithium battery 3 can be prevented from toppling in the moving discharge process, and the reliability and stability of the discharge process of the waste lithium battery 3 can be ensured, and the waste lithium batteries 3 can be always kept in contact with the upper conductive conveying belt 421 and the lower conductive conveying belt 411 in the moving process through the clamping force between the conductive graphite pressing roller 422 and the conductive graphite carrier roller 412, so that a discharge closed loop with smooth current is formed, and the complete and reliable discharge of the waste lithium batteries 3 is ensured. The upper concave position 420 and the lower concave position 417 may be grooves formed inward on the outer sides of the upper conductive conveyor 421 and the lower conductive conveyor 411 as shown in fig. 1, or arc-shaped grooves, or other concave structures; the dog be at least two dogs that the outside of last electrically conductive conveyer belt 421 and lower electrically conductive conveyer belt 411 is stretched to the evagination, the dog can fix the setting or can adjust the setting, highly be 1/10-1/5 of old and useless lithium cell 3 height, fix in the last electrically conductive conveyer belt 421 and the electrically conductive conveyer belt 411 outside down through the connecting piece, can adjust fixed position according to the model of old and useless lithium cell 3 to adapt to the old and useless lithium cell of various different specifications, improve the utility model discloses a commonality. Understandably, as long as can guarantee that the stable clamping of old and useless lithium cell 3 is between last electrically conductive conveyer belt 421 and lower electrically conductive conveyer belt 411, with the similar design of the other structures of sunken position or dog, all be the utility model discloses a protection scope.

Referring to fig. 1, in the embodiment of the conductive conveying mechanism of the present invention, a guide angle α is provided at an entrance where the waste lithium battery 3 enters between the upper conductive conveying belt 421 and the lower conductive conveying belt 411, so as to facilitate the placement of each waste lithium battery 3; and a lead-out angle beta is arranged at the outlet of the waste lithium battery 3, so that each waste lithium battery 3 after discharging is convenient to drop, and the lead-in angle alpha and the lead-out angle beta are both smaller than 75 degrees. In a specific structural embodiment, a front tension wheel 427 may be disposed at the inlet of the waste lithium battery 3 and at the front end of the annular belt inner ring of the upper conductive conveying belt 421, the front tension wheel 427 is disposed near the first conductive graphite pressing roller 422 at the inlet and between the upper driving wheel 426 and the first conductive graphite pressing roller 422, and at the same time, the upper driving wheel 426 is disposed higher than the front tension wheel 427, so that the leading-in angle α is formed at the front end of the upper conductive conveying belt 421. The front tension wheel 427 is matched with the upper driving wheel 426, so that the moving direction of the upper conductive conveying belt 421 at the front end can be changed (the oblique movement is changed into the horizontal movement), meanwhile, a tensioning mechanism can be formed, the front end of the whole upper conductive conveying belt 421 is straightened and tightened to be not loosened, the upper conductive conveying belt 421 generates different-angle redirection at the front end, and a leading-in angle alpha is formed at the entrance of the waste lithium battery 3 with the lower conductive conveying belt 411, which is beneficial for the material taking clamp 21 of the feeding mechanism 2 to send the waste lithium battery 3 into the lower conductive conveying belt 411, and the collision to the upper conductive conveying belt 421 is avoided. Similarly, a rear tension wheel 428 may be provided at the outlet of the used lithium battery 3 at the rear end of the inner loop of the endless belt of the upper conductive conveyor belt 421, the rear tension wheel 428 being provided between the upper driven wheel 425 at the rear end of the endless belt of the upper conductive conveyor belt 421 and the last conductive graphite pressure roller 422, while the upper driven wheel 425 is provided at a higher level than the rear tension wheel 428. Thus, the rear tension wheel 428 and the upper driven wheel 425 are cooperatively arranged to change the moving direction of the upper conductive conveyor belt 421 at the rear end, and simultaneously, the upper conductive conveyor belt is tensioned together with the front tension wheel 427 to form a front and rear tensioning mechanism, so that the whole annular upper conductive conveyor belt 421 is straightened and tightened without collapsing, a closed loop with smooth current is formed with each clamped waste lithium battery 3, the upper conductive conveyor belt 421 is redirected at different angles at the rear end, and a leading-out angle β is formed with the lower conductive conveyor belt 411 at the outlet of the waste lithium battery 3. After the discharge is finished, the upper conductive conveying belt 421 releases the clamping pressure on the waste lithium battery 3 at the outlet due to the leading-out angle β, so that the pressure on the top of the waste lithium battery 3 is released suddenly, and the waste lithium battery 3 automatically falls off from the lower conductive conveying belt 411 to the discharging bin 6 under the action of the self gravity.

Referring to fig. 1 again, the present invention further provides a continuous and safe discharging device for waste lithium batteries, which comprises the above-mentioned conductive conveying mechanism 4 for continuous discharging of waste lithium batteries, wherein an adjustable resistor R, an ammeter a and a switch S1 are connected in series between an upper conductive conveying belt 421 and a lower conductive conveying belt 411 in the conductive conveying mechanism 4, and form a discharging loop together with each waste lithium battery 3 clamped between the upper conductive conveying belt 421 and the lower conductive conveying belt 411. Specifically, an upper binding post 424 and a lower binding post 414 which can conduct electricity are respectively arranged at the axial centers of the conductive graphite pressing roller 422 and the conductive graphite carrier roller 412, the upper binding post 424 and the lower binding post 414 are connected in series with a switch S1, an ammeter a and an adjustable resistor R through conducting wires, when each waste lithium battery 3 is clamped between the upper conductive conveying belt 421 and the lower conductive conveying belt 411 at intervals one by one, the switch S1, the ammeter a and the adjustable resistor R are connected in series with the conductive graphite pressing roller 422, the upper conductive conveying belt 421, the conductive graphite carrier roller 412, the lower conductive conveying belt 411 and each waste lithium battery 3 through the upper binding post 424 and the lower binding post 414 to form a discharge loop. The discharge loop adopts an adjustable resistor, can adjust the discharge time and the discharge speed, and ensures that the waste lithium battery 3 is fully and completely discharged as much as possible. The utility model provides a continuous safe discharge device of old and useless lithium cell, can make the old and useless lithium cell 3 of treating discharging send into conductive conveying mechanism 4 through feeding mechanism 2 when, it is pressed from both sides tightly at last conductive conveyor belt 421 and between lower conductive conveyor belt 411 to be the interval one by one, and simultaneously, go up conductive conveyor belt 421 and lower conductive conveyor belt 411 and pass through terminal 424 and lower terminal 414, respectively with the adjustable resistance who concatenates, ampere meter and switch are connected, form the circuit that discharges, make the old and useless lithium cell 3 of treating discharging under the drive of last conductive conveyor belt 421 and lower conductive conveyor belt 411, accomplish the process of discharging gradually in continuous moving. The device is simple in structure and low in cost, can enable the waste lithium batteries 3 to be subjected to batch and continuous discharge treatment, achieves the automation of discharge of the waste lithium batteries, greatly improves the discharge efficiency of the waste lithium batteries, and can ensure complete and sufficient discharge of the waste lithium batteries. Meanwhile, continuous discharge equipment formed by the components does not need any chemical raw materials, avoids the phenomenon of environmental pollution caused by a large amount of waste gas and waste liquid generated by brine discharge, does not generate secondary pollution, is green and environment-friendly, improves the efficiency and safety of the discharge process of the waste lithium battery, meets the requirement of the current waste lithium battery recovery industry, and is beneficial to industrialized large-scale production.

Referring to fig. 1, in the embodiment of the continuous and safe discharging device for waste lithium batteries, a feeding mechanism 2 is arranged at an inlet of the waste lithium battery 4, which is fed into the conductive conveying mechanism 4, a material box 9 is arranged between the feeding mechanism 2 and the conductive conveying mechanism 4, and a plurality of lithium batteries to be discharged are uniformly placed in the material box 9, so that the feeding mechanism 2 can conveniently grab; the rear end of the conductive conveying mechanism 4 is provided with a discharging bin 6, and the discharged waste lithium battery 3 can automatically fall into the discharging bin 6. The feeding mechanism 2 comprises a base 23, a rotating arm 22 and a material taking clamp 21, the base 23 is used for supporting the whole feeding mechanism 2, one end of the rotating arm 22 is hinged to the base 23 and can rotate around the base 23, and the other end of the rotating arm is hinged to one end of the material taking clamp 21 and can drive the material taking clamp 21 to rotate. The material taking clamp 21 can rotate around the rotating arm 22, so that the material taking clamp 21 has multiple degrees of freedom, and the feeding requirement of the waste lithium battery 3 can be met; the other end of the material taking clamp 21 is provided with a mechanical arm which can automatically take the waste lithium batteries 3 out of the material box 9 one by one and send the waste lithium batteries into the placing positions arranged at intervals of the conductive conveying mechanism 4 according to polarity.

Referring to fig. 1, in the embodiment of the continuous and safe discharging device for waste lithium batteries provided by the present invention, the inlet of the waste lithium battery 3 entering the conductive conveying mechanism 4 is provided with a visual recognition system 1, and through an image pickup device CCD in the visual recognition system 1, when the material taking clamp 21 of the feeding mechanism 2 grabs the waste lithium battery 3 from the material box 9, the image pickup device CCD in the visual recognition system 1 converts the waste lithium battery 3 grabbed by the feeding mechanism 2 into an image signal and transmits the image signal to the image processing system, the image processing system rapidly identifies the external dimension characteristics of the lithium battery according to the image signals, distinguishes the anode and the cathode of the lithium battery according to the dimension, then, a control instruction is given to the feeding mechanism 2, so that the feeding mechanism 2 places each waste lithium battery 3 between the upper conductive conveying belt 421 and the lower conductive conveying belt 411 according to the pole position through the material taking clamp 21. Adopt the visual identification system, through 2 automatic feeding of feeding mechanism, need not pass through the manual work, can high efficiency discernment old and useless lithium cell's positive negative pole, avoid the artifical potential safety hazard that error caused of putting, have the accuracy height, the security is high, the characteristics of maneuverability are strong, can improve production efficiency and old and useless lithium cell discharge automation degree greatly, are favorable to improving the security and the stability of battery discharge moving process.

Referring to fig. 1, the utility model provides a continuous safe discharge device embodiment of old and useless lithium cell still includes air-cooled system 5, air-cooled system 5 is connected with the air compressor machine, including a blast pipe 51, a plurality of supply-air outlets 52 have been seted up towards the direction of each old and useless lithium cell 3 in transporting to blast pipe 51, can blow cold wind to each old and useless lithium cell 3 of the discharge in-process, make old and useless lithium cell 3 rapid cooling for reduce the heat that old and useless lithium cell 3 produced in the discharge process, further guarantee the security of the discharge in-process.

Referring to fig. 1, the utility model provides a continuous safe discharge device embodiment of old and useless lithium cell still is equipped with electrically conductive graphite fixed bed 8, electrically conductive conveying mechanism 4 sets up on electrically conductive graphite fixed bed 8 for supporting electrically conductive conveying mechanism 4, power unit, actuating mechanism and other components etc. electrically conductive graphite fixed bed 8 is also pressed by electrically conductive heat conductive graphite and is formed, both can regard as supplementary conductive element, and the reinforcing is discharged the nature, is favorable to the heat dissipation of old and useless lithium cell 3 again. The conductive graphite fixed bed 8 is used as a machine base, and the bottom of a supporting foot which is in contact with the ground is provided with an insulating protection pad 7, so that the safety of the discharging process is ensured, and the injury to operators is avoided.

The above embodiments of the present invention are only shown as the parts of the preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art will fall within the protection scope of the present invention without departing from the spirit of the present invention.

Claims (10)

1. The conductive conveying mechanism for continuous discharge is used for continuous and safe discharge of waste lithium batteries and is characterized by comprising an upper conductive conveying belt and a lower conductive conveying belt, wherein the upper conductive conveying belt and the lower conductive conveying belt are both closed annular belts, an upper driving wheel and an upper driven wheel which can drive the upper conductive conveying belt to move are arranged in the upper conductive conveying belt in an annular mode, and a plurality of conductive graphite compression rollers which are arranged between the upper driving wheel and the upper driven wheel and are arranged at intervals are arranged in the upper conductive conveying belt; the lower conductive conveying belt is internally and annularly provided with a lower driving wheel, a lower driven wheel and a plurality of conductive graphite carrier rollers, wherein the lower driving wheel and the lower driven wheel synchronously rotate with the upper driving wheel and the upper driven wheel and can drive the lower conductive conveying belt to move, the conductive graphite carrier rollers are arranged between the lower driving wheel and the lower driven wheel and are arranged at intervals, the upper conductive conveying belt and the lower conductive conveying belt are arranged at intervals up and down, so that a plurality of waste lithium batteries to be discharged are clamped between the upper conductive conveying belt and the lower conductive conveying belt at intervals one by one, and the upper conductive conveying belt and the lower conductive conveying belt drive the waste lithium batteries to gradually complete a continuous discharging process in moving.

2. The conductive conveying mechanism for continuous discharge according to claim 1, wherein each of the conductive graphite pressing rollers and each of the conductive graphite carrier rollers are disposed opposite to each other in an up-down direction with centers on the same straight line.

3. The conductive conveying mechanism for continuous discharging according to claim 1 or 2, wherein a plurality of concave positions or stoppers capable of matching with the positive and negative electrodes of the waste lithium batteries to be discharged are respectively provided at intervals at positions opposite to the outer rings of the upper conductive conveying belt and the lower conductive conveying belt, so that the waste lithium batteries clamped between the upper conductive conveying belt and the lower conductive conveying belt are positioned in the concave positions or stoppers of the upper conductive conveying belt and the lower conductive conveying belt.

4. The conductive conveying mechanism for continuous discharge according to claim 1 or 2, wherein at an inlet where the waste lithium batteries enter between the upper conductive conveying belt and the lower conductive conveying belt, a lead-in angle is provided to facilitate placement of each of the waste lithium batteries; and a leading-out angle which is convenient for each waste lithium battery to fall off after the discharge is finished is arranged at the outlet of each waste lithium battery.

5. The electrically conductive conveying mechanism for continuous discharge according to claim 4, wherein a front tension pulley is provided at a front end of an inner ring of the endless belt of the upper electrically conductive conveying belt, the front tension pulley being located between the upper driving wheel and a first electrically conductive graphite pressing roller at an inlet of the used lithium battery, the upper driving wheel being provided at a height higher than the front tension pulley so that the front end of the upper electrically conductive conveying belt forms the lead-in angle; and a rear tensioning wheel is arranged at an outlet of the waste lithium battery, the rear tensioning wheel is arranged between the upper driven wheel and the last conductive graphite compression roller, and the upper driven wheel is higher than the rear tensioning wheel, so that the rear end of the upper conductive conveying belt forms the lead-out angle.

6. The continuous safe discharge device for the waste lithium batteries is characterized by comprising the conductive conveying mechanism for continuous discharge of any one of claims 1 to 5, wherein an adjustable resistor, an ammeter and a switch are connected in series between the upper conductive conveying belt and the lower conductive conveying belt in the conductive conveying mechanism, and form a discharge loop together with each waste lithium battery clamped between the upper conductive conveying belt and the lower conductive conveying belt.

7. The continuous and safe discharge device for the waste lithium batteries as claimed in claim 6, wherein a feeding mechanism is arranged at the inlet of the waste lithium batteries fed into the conductive conveying mechanism, and the feeding mechanism is provided with a multi-degree-of-freedom material taking clamp for taking out the waste lithium batteries from the material box one by one and feeding the waste lithium batteries into the placing positions arranged at intervals on the conductive conveying mechanism.

8. The continuous and safe waste lithium battery discharging device as claimed in claim 7, wherein a visual recognition system is further provided at the entrance of the waste lithium battery feeding mechanism, which enables the feeding mechanism to place the waste lithium battery between the upper conductive conveying belt and the lower conductive conveying belt in a polar position.

9. The continuous and safe discharge device for waste lithium batteries according to any one of claims 6 to 8, further comprising an air cooling system having a plurality of air blowing ports for blowing cold air toward the waste lithium batteries moving in the conductive conveying mechanism.

10. The continuous and safe discharge device for the waste lithium batteries as recited in any one of claims 6 to 8, further comprising an electrically conductive graphite fixed bed for supporting the electrically conductive conveying mechanism, wherein the electrically conductive graphite fixed bed is formed by pressing electrically and thermally conductive graphite, and an insulating protective pad is arranged at the bottom of a supporting foot of the electrically conductive graphite fixed bed, which is in contact with the ground.

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