CN111403690A - Pole piece manufacturing process for battery manufacturing - Google Patents
Pole piece manufacturing process for battery manufacturing Download PDFInfo
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- CN111403690A CN111403690A CN202010363335.5A CN202010363335A CN111403690A CN 111403690 A CN111403690 A CN 111403690A CN 202010363335 A CN202010363335 A CN 202010363335A CN 111403690 A CN111403690 A CN 111403690A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a pole piece manufacturing process for battery manufacturing, which comprises the following steps: preliminarily preparing a pole piece: mixing and stirring active substances, a binder, a conductive agent and the like to prepare slurry, then coating the slurry on two surfaces of a copper or aluminum current collector, and removing a solvent after drying to form a pole piece; carrying out primary treatment on the pole piece: a pole piece rolling machine is adopted to carry out compaction treatment on the pole piece, the pole piece coated with particle coatings on two sides is sent into a gap between two rollers, and the coatings are compacted under the action of the load of a roller line; further processing of the pole piece: after the pole piece is compacted and densified, cutting or dividing the pole piece; after the three raw materials are uniformly mixed, the raw materials are quickly coated on the surface of copper and aluminum, and then the manufacturing process of the pole piece is continuously carried out, so that the manufacturing efficiency of the pole piece is improved, and the equipment is in a continuous operation state.
Description
Technical Field
The invention belongs to the technical field of battery manufacturing, and particularly relates to a pole piece manufacturing process for battery manufacturing.
Background
The lithium battery is a battery which uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution, the lithium metal battery is firstly proposed and researched by Gilbert N. L ewis in 1912, and in the 70 th century, the lithium battery is proposed and researched by M.S. Whittingham.
Because the demand of lithium cell promotes in a large number, the preparation technology requirement to the lithium cell also improves thereupon, the preparation of lithium cell is usually to be through mixing, the coating, the roll-in, cut four steps, in the compression roller operation process, because there are high compaction density and compression ratio that need, consequently, dust and material granule very easily bond on the upper and lower compression roller of bucker in the rolling process, thereby lead to the processing product to produce bad phenomena such as impression or even damage, the dust is consequently infected with on the roller easily, make roll surface produce protrudingly, influence the roll-in effect to the pole piece, the rejection rate in the battery preparation of increase.
Disclosure of Invention
The invention provides a pole piece manufacturing process for manufacturing a battery, aiming at overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a process for making a pole piece for use in battery manufacturing, comprising:
a. preliminarily preparing a pole piece: mixing and stirring active substances, a binder, a conductive agent and the like to prepare slurry, then coating the slurry on two surfaces of a copper or aluminum current collector, and removing a solvent after drying to form a pole piece;
b. carrying out primary treatment on the pole piece: a pole piece rolling machine is adopted to carry out compaction treatment on the pole piece, the pole piece coated with particle coatings on two sides is sent into a gap between two rollers, and the coatings are compacted under the action of the load of a roller line;
c. further processing of the pole piece: and after the pole piece is compacted and densified, cutting or dividing the pole piece.
The pole piece rolling machine in the step b comprises an equipment box, an installation plate arranged on the equipment box, a first roller arranged at the top of the equipment box and a second roller arranged on the installation plate, wherein the second roller is matched with the first roller and can do lifting motion; when the pole piece is placed on the first roller, the height of the second roller is adjusted according to the processing requirement, the second roller moves downwards to be in contact with the top surface of the pole piece, the first roller and the second roller rotate to enable the pole piece to pass between the first roller and the second roller, and the pole piece is extruded; when the second roller rotates to the top, the second roller is contacted with the felt cloth on the second roller, so that dust on the surface of the second roller is removed, and the second roller is cleaned.
After the three raw materials are uniformly mixed, the raw materials are quickly coated on the surface of copper and aluminum, and then the manufacturing process of the pole piece is continuously carried out, so that the manufacturing efficiency of the pole piece is improved, and the equipment is in a continuous operation state; when the pole pieces are rolled by the roller, the pole pieces are compacted when the second rotating roller rotates to the bottom, and the second rotating roller contacts with the felt cloth on the second rotating roller when rotating to the top, so that dust on the second rotating roller is adsorbed, and the second roller is cleaned; the method for cleaning the second roller by using the felt cloth avoids damage to the second roller, meanwhile, equipment does not need to be shut down specially, the surface of the second roller is cleaned while the second roller works, the second roller is convenient to clean, potential safety hazards appearing when the second roller is cleaned are reduced, and the second roller is prevented from being affected by excessive dust attached to the second roller for compaction treatment of the pole piece.
B, the powdery material in the step a is roasted after the coagulated small particles are broken up by a vibrating screen; absorbing water molecules of the liquid material by a molecular sieve through a pipeline, and then adding the required material into a stirrer in proportion for mixing for preset time; different methods are adopted for processing different types of materials, so that the materials are mixed more uniformly after being stirred, and the quality of raw materials of the battery is improved, so that the battery with better quality can be obtained.
The dry powder mixed in the step a needs to be added into a prepared binder, and the pulping process is completed by controlling the rotating speed of a machine and the vacuumizing process; through the mutual matching of the control of the rotating speed of the machine and the vacuumizing, the dry powder and the binder are better mixed together, the mixing effect of the dry powder and the binder is improved, and the quality of the finished battery is improved.
In the step a, the pole piece is placed on an unreeling device, is dragged by a pinch roll on the unreeling device, enters a coating head after the unreeling tension is adjusted, and pole piece slurry is coated according to a set program of a coating system; under the action of the coating head, the slurry can be uniformly coated on the pole piece, so that the slurry on the surface of the pole piece is more uniformly distributed, and the quality of the pole piece is ensured; slurry is automatically coated on the pole pieces through a set program, so that the automatic coating of the pole pieces is realized, the slurry coating on each pole piece is uniform, and the specification of the batch production of the pole pieces is improved.
B, drying the coated wet pole piece in the step a in an oven by using hot air; under the effect of hot-blast, do drying process to wet pole piece, make wet pole piece in getting into the stoving incasement after rapid draing to make the pole piece can accomplish each item at the in-process of transportation and handle, promote pole piece manufacturing efficiency.
A cavity is formed in the connecting block on the pole piece rolling machine in the step b, a first sliding groove is formed in the inner wall of the cavity, a first mounting block is arranged in the cavity, a first sliding block matched with the first sliding groove is arranged on the side wall of the first mounting block, bristles are arranged on the first mounting block, an electromagnet is arranged in the cavity, and the first mounting block is made of a ferromagnetic material; the mounting plate is provided with a driving motor for driving the second rotary roller to rotate; when the second rotating roller is contacted with the surface of the second roller, the felted cloth is contacted with the surface of the second roller, the electromagnet is electrified to suck the first mounting block into the cavity, the second rotating roller rotates along with the second roller to scrape off dust on the surface of the second roller, after the dust on the felted cloth is accumulated to a preset value, the first rotating roller drives the connecting block to rotate, the second rotating roller rotates to be matched with the driving motor, the driving motor drives the second rotating roller to rotate, the end point of the electromagnet enables the first mounting block to move towards the outer side of the cavity, the bristles are contacted with the surface of the second rotating roller, the surface of the second rotating roller is contacted with the bristles when the second rotating roller rotates, and the dust on the surface of the felted cloth is hung in the cavity; under the action of the electromagnet, the bristles of the second rotating roller are not contacted with the second roller when being contacted with the second roller, so that the influence of the bristles on the rotation of the second rotating roller is avoided, and all the felt cloth on the second rotating roller can be used; after the second is changeed the roller and is rotated to second roll top, make brush hair and sticky coarse cotton cloth contact under the effect of electro-magnet, the second is changeed the roller and is scraped the dust on the sticky coarse cotton cloth under the brush hair effect when rotating, and the dust of scraping drops to in the cavity, collects the dust that drops through the cavity, changes the sticky coarse cotton cloth on the roller to the second and does from the clearance, prolongs the life of sticky coarse cotton cloth, makes a plurality of seconds change the roller and can alternate use, plays and changes the clear purpose of roller to the second.
A fixing plate is arranged on a connecting block on the pole piece rolling machine in the step b, the fixing plate is rotatably connected onto the connecting block, a first through hole is formed in the fixing plate, a fixing block penetrates through the first through hole, a limiting ring is arranged on the side wall of the fixing block, a movable groove matched with the limiting ring is formed in the inner wall of the first through hole, and a fixing assembly matched with the fixing plate is arranged on the connecting block; when the second rotating roller is installed, the fixing plate on one side is rotated, the fixing plate is positioned through the fixing assembly, the second rotating roller is sleeved on the fixing block, one end of the second rotating roller is fixed firstly, then the fixing plate on the other side is rotated, the fixing block on the other side is rotated to be in contact with the second rotating roller, the fixing block on the fixing plate on the other side is inserted into the other end of the second rotating roller, the other end of the second rotating roller is fixed, and the installation of the second rotating roller is completed; under the mutual matching of the fixing plate and the fixing component, the second rotating roller is fixed, so that the second rotating roller is conveniently arranged on the first rotating roller, and the detachable connection of the second rotating roller is realized; when more dust is adhered on the felt cloth and cannot be cleaned, the second rotary roller can be conveniently detached from the connecting block, and the felt cloth is replaced, so that the cleaning effect on the second roller is ensured, and the compaction effect on the pole piece is improved; under the mutual matching of the limiting ring and the movable groove, the fixed block can be rotatably arranged on the fixed plate, so that the influence of the fixed block on the rotation of the second rotary roller is avoided; play the fixed action to the fixed plate through fixed subassembly, promote the fixed block and the cooperation effect that the roller was changeed to the second, make the second change the roller stable connect on the connecting block, guarantee to glue the clearance effect of coarse cotton cloth to the second roll.
The invention has the following advantages: after the three raw materials are uniformly mixed, the raw materials are quickly coated on the surface of copper and aluminum, and then the manufacturing process of the pole piece is continuously carried out, so that the manufacturing efficiency of the pole piece is improved, and the equipment is in a continuous operation state; when the pole pieces are rolled by the roller, the pole pieces are compacted when the second rotating roller rotates to the bottom, and the second rotating roller contacts with the felt cloth on the second rotating roller when rotating to the top, so that dust on the second rotating roller is adsorbed, and the second roller is cleaned; the method for cleaning the second roller by using the felt cloth avoids damage to the second roller, meanwhile, equipment does not need to be shut down specially, the surface of the second roller is cleaned while the second roller works, the second roller is convenient to clean, potential safety hazards appearing when the second roller is cleaned are reduced, and the second roller is prevented from being affected by excessive dust attached to the second roller for compaction treatment of the pole piece.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a first cross-sectional view of the present invention.
Fig. 4 is an enlarged view of fig. 3 at B.
FIG. 5 is a second cross-sectional view of the present invention.
Fig. 6 is an enlarged view of fig. 5 at C.
Fig. 7 is an enlarged view of fig. 5 at D.
Fig. 8 is a third schematic cross-sectional view of the present invention.
Fig. 9 is a fourth schematic cross-sectional view of the present invention.
Fig. 10 is an enlarged view of fig. 9 at E.
Fig. 11 is an enlarged view of fig. 9 at F.
Detailed Description
As shown in fig. 1-11, a process for making a pole piece for battery fabrication includes: a. preliminarily preparing a pole piece: mixing and stirring active substances, a binder, a conductive agent and the like to prepare slurry, then coating the slurry on two surfaces of a copper or aluminum current collector, and removing a solvent after drying to form a pole piece; b. carrying out primary treatment on the pole piece: a pole piece rolling machine is adopted to carry out compaction treatment on the pole piece, the pole piece coated with particle coatings on two sides is sent into a gap between two rollers, and the coatings are compacted under the action of the load of a roller line; c. further processing of the pole piece: and after the pole piece is compacted and densified, cutting or dividing the pole piece.
B, the powdery material in the step a is roasted after the coagulated small particles are broken up by a vibrating screen; absorbing water molecules of the liquid material by a molecular sieve through a pipeline, and then adding the required material into a stirrer in proportion for mixing for preset time; the dry powder mixed in the step a needs to be added into a prepared binder, and the pulping process is completed by controlling the rotating speed of a machine and the vacuumizing process; in the step a, the pole piece is placed on an unreeling device, is dragged by a pinch roll on the unreeling device, enters a coating head after the unreeling tension is adjusted, and pole piece slurry is coated according to a set program of a coating system; the wet pole piece after being coated in the step a enters an oven and is dried by hot air
The pole piece rolling machine in the step b comprises an equipment box 1, a mounting plate arranged on the equipment box 1, a first roller 6 arranged at the top of the equipment box 1 and a second roller 2 arranged on the mounting plate, wherein the second roller 2 is matched with the first roller 6, the second roller 2 can do lifting motion, a first rotating roller 4 is arranged at the top of the mounting plate, a connecting block 41 is arranged on the first rotating roller 4, one end of the connecting block 41 is rotatably connected with a second rotating roller 5, a piece of adhesive wool cloth is wrapped on the second rotating roller 5, and the piece of adhesive wool cloth can be made of chemical fiber materials; the second rotating roller 5 is in contact with the surface of the second roller 2; when the pole piece is placed on the first roller 6, the height of the second roller 2 is adjusted according to the processing requirement, so that the second roller 2 moves downwards to be in contact with the top surface of the pole piece, and the first roller 6 and the second roller 2 rotate to enable the pole piece to pass between the first roller 6 and the second roller 2 so as to extrude the pole piece; when the second roller 2 rotates to the top, the second roller 2 is contacted with the wool sticking cloth on the second rotating roller 5, dust on the surface of the second roller 2 is removed, and the second roller 2 is cleaned; when the pole pieces are rolled by the roller, the pole pieces are compacted when the second rotating roller rotates to the bottom, and the second rotating roller contacts with the felt cloth on the second rotating roller when rotating to the top, so that dust on the second rotating roller is adsorbed, and the second roller is cleaned; the method for cleaning the second roller by using the felt cloth avoids damage to the second roller, meanwhile, equipment does not need to be shut down specially, the surface of the second roller is cleaned while the second roller works, the second roller is convenient to clean, potential safety hazards appearing when the second roller is cleaned are reduced, and the second roller is prevented from being affected by excessive dust attached to the second roller for compaction treatment of the pole piece.
An operation panel is arranged on the side wall of the equipment box, and the pole piece rolling machine can be controlled through the operation panel; the side wall of the mounting plate is provided with a second chute, the second chute is internally provided with material carrying plates 3, the material carrying plates can move along the inner wall of the second chute, a plurality of groups of first rollers are arranged at the bottom of the material carrying plates, and the first rollers are in transmission fit with the material carrying plates; the second roller is arranged above the material carrying plate, when the pole piece is compacted, the pole piece is placed on the material carrying plate, the material carrying plate is driven to move towards the other side of the equipment box under the action of the first roller, and the second roller is used for rolling the pole piece on the material carrying plate; through mutually supporting of flitch and second roll, avoid the pole piece to skid from between first roll and the second roll, promote the compaction effect of roll to the pole piece.
A third sliding chute is further arranged on the side wall of the mounting plate, a second sliding block 21 is arranged in the third sliding chute, the second roller is rotatably connected onto the second sliding block, a first supporting spring 22 matched with the second sliding block is arranged at the bottom of the third sliding chute, and an adjusting assembly for driving the second sliding block to move up and down is arranged at the top of the third sliding chute; under the mutual matching of the adjusting assembly and the first supporting spring, the second sliding block is fixed at a designated position in the third sliding chute, so that the position of the second roller is fixed, the second roller and the material carrying plate are well matched, and the pole piece is conveniently compacted; the second roller is driven to move up and down through the adjusting assembly, so that the height of the second roller can be adjusted conveniently, the height of the second roller can be adjusted according to different work requirements, the second roller is always in contact with the pole piece, and the compaction effect of the roller press on the pole piece is improved.
The adjusting assembly comprises a liquid storage box 14 arranged at the top of the third sliding groove, a push rod 15 arranged in the liquid storage box in a penetrating mode and a first push plate 151 arranged on one side of the push rod, the push plate is arranged in the liquid storage box, a second through hole is formed in the side wall of the liquid storage box, a liquid storage cavity 16 communicated with the second through hole is formed in the mounting plate, a threaded rod 17 is arranged in the liquid storage cavity in a penetrating mode, a second push plate 171 is arranged at one end of the threaded rod, the second push plate is arranged in the liquid storage cavity, and a threaded hole matched; hydraulic oil is filled in the liquid storage cavity, when the height of the second roller is adjusted, the threaded rod is rotated, the threaded rod is enabled to move towards the liquid storage cavity under the mutual matching of the threaded rod and the threaded hole, so that the second push plate moves towards one end of the liquid storage cavity, the hydraulic oil in the liquid storage cavity is pushed into the liquid storage tank under the action of the second push plate, the oil in the liquid storage cavity is increased, the first push plate is pushed to move downwards under the action of the hydraulic oil, the push rod is enabled to push the second slide block to move downwards, the first supporting spring is enabled to be in an extrusion state, the threaded rod stops rotating until the second roller is adjusted to the required height, and the position of the second roller is determined; a pressure gauge 18 is arranged on the side wall of the mounting plate, two ends of the second roller are respectively connected with the pressure gauge, and the two ends of the roller can be adjusted through the pressure gauges, so that the second roller is always in a horizontal state after descending, the second roller is better contacted with a pole piece, and the processing effect of the pole piece is improved; through mutually supporting of threaded rod and screw hole, adopt rotatory mode to adjust the height of second roll, make the better decline of second roll under the effect of hydraulic oil, play laborsaving effect.
The first rotating roller is provided with three groups of connecting blocks, the three groups of connecting blocks are uniformly arranged on the first rotating roller, the connecting block 41 is provided with a cavity, the inner wall of the cavity is provided with a first sliding groove 47, a first mounting block 46 is arranged in the cavity, the side wall of the first mounting block 46 is provided with a first sliding block 461 matched with the first sliding groove 47, the first sliding groove is internally provided with a connecting spring 471 matched with the first sliding block, the first mounting block 46 is provided with bristles, the cavity is internally provided with an electromagnet, and the first mounting block 46 is made of a ferromagnetic material; the mounting plate is provided with a driving motor for driving the second rotary roller 5 to rotate; when the second rotating roller 5 is in contact with the surface of the second roller 2, the felted cloth is in contact with the surface of the second roller 2, the electromagnet is electrified to suck the first mounting block 46 into the cavity, the second rotating roller 5 rotates along with the second roller 2 to scrape off dust on the surface of the second roller 2, after the dust on the felted cloth is accumulated to a preset value, the first rotating roller 4 drives the connecting block 41 to rotate, so that the second rotating roller 5 rotates to be matched with the driving motor, the driving motor drives the second rotating roller 5 to rotate, the electromagnet is powered off to enable the first mounting block 46 to move towards the outer side of the cavity, the bristles are in contact with the surface of the second rotating roller 5, the surface of the second rotating roller 5 is in contact with the bristles when rotating, and the dust on the surface of the felted cloth is hung in the cavity; when the second rotating roller is in contact with the second roller, the electromagnet is electrified, and the first mounting block enters the cavity; when the second rotating roller rotates to a position above the second roller, the electromagnet is powered off, the first sliding block is positioned at one end of the first sliding groove, and the bristles are in contact with the second rotating roller; under the action of the electromagnet, the bristles of the second rotating roller are not contacted with the second roller when being contacted with the second roller, so that the influence of the bristles on the rotation of the second rotating roller is avoided, and all the felt cloth on the second rotating roller can be used; after the second is changeed the roller and is rotated to second roll top, make brush hair and sticky coarse cotton cloth contact under the effect of electro-magnet, the second is changeed the roller and is scraped the dust on the sticky coarse cotton cloth under the brush hair effect when rotating, and the dust of scraping drops to in the cavity, collects the dust that drops through the cavity, changes the sticky coarse cotton cloth on the roller to the second and does from the clearance, prolongs the life of sticky coarse cotton cloth, makes a plurality of seconds change the roller and can alternate use, plays and changes the clear purpose of roller to the second.
The mounting plate is provided with a telescopic rod, the first rotating roller is rotatably arranged on the telescopic rod, one end of the first rotating roller is provided with an adjusting motor, the adjusting motor is in transmission fit with the first rotating roller, after one second rotating roller on the first rotating roller contacts the second roller for a long time, the second roller is attached with more dust, the first roller is driven to move upwards under the action of the telescopic rod, the first roller drives the second roller to move upwards, so that the second roller moves to the upper part of the second roller, the first roller that changes of drive rotates under the effect of adjustment motor, makes another second on the first roller change the position department of the second roller that winter originally contacted with the second roll, and the telescopic link drives the second roller and down moves afterwards, makes the second roll contact with new second roller, need not frequent change the felt, guarantees the clean effect to the second roll.
The top of the mounting plate is provided with a second mounting block 11, the driving motor is arranged in the second mounting block, the top of the second mounting block is hinged with a first connecting rod 12, the top of the first connecting rod is provided with a first driving wheel 13, and the first driving wheel and the driving motor form transmission fit through chain transmission; the first connecting rod is provided with a support rod 121, the bottom of the support rod is provided with two groups of second support springs 122 which are respectively arranged at two ends of the support rod; when the first rotating roller is driven to rotate by the adjusting motor, the first rotating roller drives the second rotating roller to rotate, so that the second rotating roller on the first rotating roller is alternately contacted with the first driving wheel, the first driving wheel is prevented from blocking the rotation of the second rotating roller under the hinging of the second supporting spring and the first connecting rod, meanwhile, the first driving wheel can be quickly and automatically reset after being inclined, the matching effect of the first driving wheel and the second rotating roller is ensured, the second rotating roller is driven to rotate under the action of the driving motor, and the lint adhesive is automatically cleaned.
The fixing plate 42 is arranged on the connecting block 41, the fixing plate 42 is rotatably connected to the connecting block 41, a first through hole is formed in the fixing plate 42, a fixing block 451 penetrates through the first through hole, a second driving wheel 45 matched with the first driving wheel is arranged on the side wall of the fixing block 451, a limiting ring is arranged on the side wall of the fixing block 451, a movable groove matched with the limiting ring is formed in the inner wall of the first through hole, and a fixing component matched with the fixing plate 42 is arranged on the connecting block 41; when the second rotating roller 5 is installed, the fixing plate 42 on one side is rotated, the fixing plate 42 is positioned through the fixing assembly, the second rotating roller 5 is sleeved on the fixing block, one end of the second rotating roller 5 is fixed firstly, then the fixing plate 42 on the other side is rotated, the fixing block on the other side is rotated to be in contact with the second rotating roller 5, the fixing block on the fixing plate 42 on the other side is inserted into the other end of the second rotating roller 5, the other end of the second rotating roller 5 is fixed, and the installation of the second rotating roller 5 is completed; under the mutual matching of the fixing plate and the fixing component, the second rotating roller is fixed, so that the second rotating roller is conveniently arranged on the first rotating roller, and the detachable connection of the second rotating roller is realized; when more dust is adhered on the felt cloth and cannot be cleaned, the second rotary roller can be conveniently detached from the connecting block, and the felt cloth is replaced, so that the cleaning effect on the second roller is ensured, and the compaction effect on the pole piece is improved; under the mutual matching of the limiting ring and the movable groove, the fixed block can be rotatably arranged on the fixed plate, so that the influence of the fixed block on the rotation of the second rotary roller is avoided; play the fixed action to the fixed plate through fixed subassembly, promote the fixed block and the cooperation effect that the roller was changeed to the second, make the second change the roller stable connect on the connecting block, guarantee to glue the clearance effect of coarse cotton cloth to the second roll.
The fixing component comprises a third mounting block 43 arranged on the side wall of the connecting block and a fixing block 44 arranged in the third mounting block, a fourth sliding groove is arranged on the side wall of the third mounting block, a third sliding block matched with the fourth sliding groove is arranged on the side wall of the fixing block, a fixing spring 431 matched with the third sliding block is arranged in the fourth sliding groove, and a fixing hole 421 matched with the fixing block is arranged on the side wall of the fixing plate; when the fixed plate rotates to and changes the roller with the second and cooperate, promote the third slider along the fourth spout, make the fixed block imbed in the fixed orifices, under the cooperation of fixed block and fixed orifices, make the fixed plate unable upset, play the fixed action to the fixed plate to change the roller with the second and fix between two sets of fixed plates, promote the fixed effect of changeing the roller to the second.
When the pole piece is compacted, rotating the threaded rod according to the processing requirement of the pole piece, and adjusting the height of the second roller to obtain a proper height; placing the pole piece on a material carrying plate, enabling the pole piece to move forwards under the action of a first roller, enabling the pole piece to pass between a second roller and the material carrying plate, and compacting the pole piece; when the bottom surface of the second roller rotates to the top surface, the second roller is contacted with the wool sticking cloth on the surface of the second roller, and dust on the surface of the second roller is stuck away under the action of the wool sticking cloth to clean the second roller; when the surface of the second rotating roller is divided into a plurality of parts, the telescopic rod drives the first rotating roller to rise, the first rotating roller is driven to rotate under the action of the adjusting motor, the other group of second rotating rollers on the first rotating roller rotates to winter above the second roller, the telescopic rod descends, a new second rotating roller is in contact with the surface of the second roller, the second rotating roller with dust on the surface is positioned on one side of the first transmission wheel, the first transmission wheel is matched with the second transmission wheel, the second rotating roller is driven to rotate under the action of the driving motor, the second rotating roller is in contact with the bristles when rotating, the dust on the surface of the lint is hung down under the action of the bristles, the falling dust is collected in the cavity, the steps are repeated after more dust is on the lint on the second rotating roller, the third second rotating roller rotates to winter to be in contact with the second roller, so that the three second rotating rollers are used alternately, and the second rotating roller which is not in contact with the second roller is cleaned, the service life of the felt cloth is prolonged, and the replacement frequency of the felt cloth is reduced.
Claims (3)
1. A pole piece manufacturing process for battery manufacturing is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a. preliminarily preparing a pole piece: mixing and stirring active substances, a binder, a conductive agent and the like to prepare slurry, then coating the slurry on two surfaces of a copper or aluminum current collector, and removing a solvent after drying to form a pole piece;
b. carrying out primary treatment on the pole piece: a pole piece rolling machine is adopted to carry out compaction treatment on the pole piece, the pole piece coated with particle coatings on two sides is sent into a gap between two rollers, and the coatings are compacted under the action of the load of a roller line;
c. further processing of the pole piece: after the pole piece is compacted and densified, cutting or dividing the pole piece;
the pole piece rolling machine in the step b comprises an equipment box (1), a mounting plate arranged on the equipment box (1), a first roller (6) arranged at the top of the equipment box (1) and a second roller (2) arranged on the mounting plate, wherein the second roller (2) is matched with the first roller (6), the second roller (2) can move up and down, a first rotating roller (4) is arranged at the top of the mounting plate, a connecting block (41) is arranged on the first rotating roller (4), one end of the connecting block (41) is rotatably connected with a second rotating roller (5), the second rotating roller (5) is wrapped with adhesive wool cloth, and the surface of the second rotating roller (5) is in contact with the surface of the second roller (2); when the pole piece is placed on the first roller (6), the height of the second roller (2) is adjusted according to the processing requirement, so that the second roller (2) moves downwards to be in contact with the top surface of the pole piece, and the first roller (6) and the second roller (2) rotate to enable the pole piece to pass between the first roller (6) and the second roller (2) and extrude the pole piece; when the second roller (2) rotates to the top, the second roller (2) is contacted with the wool sticking cloth on the second rotating roller (5) to remove dust on the surface of the second roller (2) and clean the second roller (2); a cavity is formed in a connecting block (41) on the pole piece rolling machine in the step b, a first sliding groove (47) is formed in the inner wall of the cavity, a first mounting block (46) is arranged in the cavity, a first sliding block (461) matched with the first sliding groove (47) is arranged on the side wall of the first mounting block (46), bristles are arranged on the first mounting block (46), an electromagnet is arranged in the cavity, and the first mounting block (46) is made of ferromagnetic materials; the mounting plate is provided with a driving motor for driving the second rotary roller (5) to rotate; when the second rotating roller (5) is in contact with the surface of the second roller (2), the wool gluing cloth is in contact with the surface of the second roller (2), the electromagnet is electrified to suck the first mounting block (46) into the cavity, the second rotating roller (5) rotates along with the second roller (2) to scrape off dust on the surface of the second roller (2), after the dust on the wool gluing cloth is accumulated to a preset value, the first rotating roller (4) drives the connecting block (41) to rotate, the second rotating roller (5) is made to rotate to be matched with the driving motor, the driving motor drives the second rotating roller (5) to rotate, the electromagnet is powered off to make the first mounting block (46) move towards the outer side of the cavity, the bristles are in contact with the surface of the second rotating roller (5), the surface of the second rotating roller (5) is made to be in contact with the bristles when rotating, and the dust on the surface of the wool gluing cloth is hung into the cavity; b, the powdery material in the step a is roasted after the coagulated small particles are broken up by a vibrating screen; absorbing water molecules of the liquid material by a molecular sieve through a pipeline, and then adding the required material into a stirrer in proportion for mixing for preset time; in the step a, the pole piece is placed on an unreeling device, is dragged by a pinch roll on the unreeling device, enters a coating head after the unreeling tension is adjusted, and pole piece slurry is coated according to a set program of a coating system; a fixing plate (42) is arranged on a connecting block (41) on the pole piece rolling machine in the step b, the fixing plate (42) is rotatably connected onto the connecting block (41), a first through hole is formed in the fixing plate (42), a fixing block (451) penetrates through the first through hole, a limiting ring is arranged on the side wall of the fixing block (451), a movable groove matched with the limiting ring is formed in the inner wall of the first through hole, and a fixing component matched with the fixing plate (42) is arranged on the connecting block (41); when changeing roller (5) installation to the second, rotate fixed plate (42) of one side, do the location to fixed plate (42) through fixed subassembly, change roller (5) cover with the second on the fixed block, change the one end of roller (5) to the second and fix earlier, rotate fixed plate (42) of opposite side afterwards, make the fixed block of opposite side rotate to changeing roller (5) contact with the second, make the fixed block on fixed plate (42) of opposite side insert the other end that changes roller (5) at the second, change the other end of roller (5) to the second and fix, accomplish the installation that roller (5) were changeed to the second.
2. A process for making a pole piece for use in battery manufacturing according to claim 1, wherein: and d, adding the dry powder mixed in the step a into the prepared binder, and finishing the pulping process by controlling the rotating speed of a machine and a vacuumizing process.
3. A process for making a pole piece for use in battery manufacturing according to claim 1, wherein: and (b) enabling the coated wet pole piece in the step a to enter an oven to be dried by hot air.
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| CN201910913648.0A CN110581257B (en) | 2019-09-25 | 2019-09-25 | Pole piece manufacturing process |
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Also Published As
| Publication number | Publication date |
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| CN111403690B (en) | 2021-05-04 |
| CN110581257B (en) | 2020-07-28 |
| CN110581257A (en) | 2019-12-17 |
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