CN114558741B - New energy automobile lithium battery pole piece coating equipment - Google Patents

New energy automobile lithium battery pole piece coating equipment Download PDF

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Publication number
CN114558741B
CN114558741B CN202210196507.3A CN202210196507A CN114558741B CN 114558741 B CN114558741 B CN 114558741B CN 202210196507 A CN202210196507 A CN 202210196507A CN 114558741 B CN114558741 B CN 114558741B
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coating
roller
rod
current collector
pressing
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CN114558741A (en
Inventor
刘振添
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Guangzhou Pantai Energy Technology Co ltd
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Guangzhou Pantai Energy Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/11—Vats or other containers for liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C15/00—Enclosures for apparatus; Booths
    • 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
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • 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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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention belongs to the technical field of new energy automobile batteries, and particularly relates to new energy automobile lithium battery pole piece coating equipment which comprises a supporting frame, an unreeling mechanism, a tensioning mechanism, a guide mechanism, a coating mechanism, a drying mechanism, a cold pressing mechanism, a reeling mechanism and a pressing crease-resistant mechanism; according to the invention, the tensioning mechanism drives the driving rod to move in the process of adjusting the tensioning force motion, so that the driving rod drives the swinging rod to rotate around the fixed seat, the swinging rod drives the pressing rod to move, the pressing rod drives the pressing roller to move on the surface of the back roller, and the spring is arranged between the pressing rod and the swinging rod, so that the spring is stretched to enable the current collector to be pressed on the back roller by the pressing roller all the time, and further the current collector is prevented from wrinkling, so that the current collector is ensured to be flat and tightly attached to the back roller when passing through the surface of the back roller, further the condition that the coating is uneven when slurry is coated on the surface of the current collector is avoided, and further the uniformity of the coating of the slurry on the surface of the current collector is ensured.

Description

New energy automobile lithium-ion battery pole piece coating equipment
Technical Field
The invention belongs to the technical field of new energy automobile batteries, and particularly relates to a new energy automobile lithium battery pole piece coating device.
Background
A lithium ion battery is a secondary battery (rechargeable battery) that mainly operates by movement of lithium ions between a positive electrode and a negative electrode; during the charge and discharge process, lithium ions are intercalated and deintercalated between the two electrodes: during charging, lithium ions are extracted from the positive electrode and are inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharging; the production and manufacturing of the lithium ion battery are closely connected processes by process steps; in general, the production of the lithium battery comprises a pole piece manufacturing process, a battery assembly process and a final liquid injection, pre-charging, formation and aging process; in the three-stage process, each procedure can be divided into a plurality of key processes, each step can greatly influence the final performance of the battery, the pole piece manufacturing procedure is the core content of the whole lithium battery manufacturing and is related to the electrochemical performance of the battery, and the quality of the slurry is particularly important;
coating process has important influence to lithium ion battery performance in the pole piece manufacturing procedure, and the coating is that the thick liquids with stirring is evenly coated on the mass flow body to a technology of drying the organic solvent in the thick liquids, guarantee that the even coating of pole piece has important influence to battery capacity, internal resistance, cycle life and security, have the requirement to the tensioning of mass flow body when the coating, but the untimely fold appears when can make the mass flow body pass through the backing roll when the tensioning is adjusted, and then influence the homogeneity of coating.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a new energy automobile lithium battery pole piece coating device. The invention is mainly used for solving the problem that the current collector is wrinkled when passing through a back roll due to the change of the tension force when the current collector is tensioned and adjusted by the existing coating equipment, so that the coating uniformity is influenced.
The technical scheme adopted by the invention for solving the technical problem is as follows: the invention provides a new energy automobile lithium battery pole piece coating device which comprises a supporting frame, an unreeling mechanism, a tensioning mechanism, a guide mechanism, a coating mechanism, a drying mechanism, a cold pressing mechanism and a reeling mechanism, wherein the unreeling mechanism is arranged on the supporting frame; the supporting frame is fixedly connected to the ground; the unwinding mechanism is arranged at one end of the supporting frame; the unwinding mechanism is used for unwinding the coiled current collector; the other end of the supporting frame is provided with the winding mechanism; the rolling mechanism is used for rolling the compacted battery grade sheet;
the coating mechanism is arranged behind the unwinding mechanism and used for coating slurry on the surface of the discharged current collector; the coating mechanism comprises a back roll, a coating roll, a slurry scraper and a slurry box; the support frame is rotatably connected with the coating roller; the back roll is arranged on one side of the coating roll; the other side of the coating roller is provided with the slurry box; the slurry box is fixedly connected to the supporting frame; the slurry scraper is arranged above the coating roller;
the drying mechanism is arranged behind the coating mechanism and used for drying the current collector coated with the slurry;
the cold pressing mechanism is arranged behind the drying mechanism and used for compacting the dried battery grade sheet;
the rolling mechanism is arranged behind the cold pressing mechanism and used for rolling the compacted battery grade sheet;
the tensioning mechanism is arranged between the unwinding mechanism and the coating mechanism; the tensioning mechanism is used for controlling the tensioning force of the current collector in the discharging process;
the guide mechanism is arranged between the unwinding mechanism and the winding mechanism; the guide mechanism comprises an uncoiling guide roller, a coating guide roller and a coiling guide roller; an uncoiling guide roller is arranged between the tensioning mechanism and the uncoiling mechanism; the uncoiling guide roller is rotationally connected to the supporting frame; a coating guide roller is arranged between the tensioning mechanism and the coating mechanism; the coating guide roller is connected to the supporting frame; the coiling guide roller is arranged between the coiling mechanism and the cold pressing mechanism; the coiling guide roller is rotatably connected to the supporting frame; the coating equipment also comprises a pressing crease-resist mechanism; the pressing crease-resistance mechanism comprises a fixed seat, a swing rod, a pressing roller, a driving rod and a spring; the compression roller is arranged below the coating roller and the back roller and is in contact with the back roller; the two ends of the rotating shaft of the pressing roller are provided with the pressing rods; one end of the pressing rod is rotatably connected to a rotating shaft of the pressing roller; the other end of the pressing rod is provided with the swinging rod; the other end of the pressing rod is rotatably connected to one end of the swinging rod; the other end of the swinging rod is provided with the driving rod; one end of the driving rod is rotatably connected to the other end of the swinging rod; the other end of the driving rod is connected to the tensioning mechanism; the middle part of the swinging rod is rotatably connected to the fixed seat; the fixed seat is fixedly connected to the cross rod of the support frame; the spring is arranged between one end of the oscillating rod close to the driving rod and one end of the pressing rod close to the pressing roller; and two ends of the spring are fixedly connected to the swinging rod and the pressing rod.
When the current collector works, slurry is continuously or intermittently and uniformly coated on the surface of a transmission current collector according to different lithium ion battery core manufacturing processes, because the current collector is in a roll shape, after the current collector is unfolded, the current collector sequentially passes through an uncoiling guide roller, a tensioning mechanism, a coating guide roller, a coating mechanism, a drying mechanism and a cold pressing mechanism, a compacted battery grade sheet is wound into a roll and then is stored and transported, the current collector is continuously and uninterruptedly transmitted in the coating process, because the diameter of the rolled current collector is continuously reduced in the process of producing the battery grade sheet, the tensioning force of the current collector is continuously changed in the transmission process, the tensioning force of the current collector is controlled by the tensioning mechanism, so that the current collector is in a stable state, and when the tensioning force is changed, the tensioning mechanism is moved and adjusted, the mutual acting force of the contact surface of the current collector and the back roll changes in the process (the tightness degree of contact between the current collector and the back roll changes), and then the current collector near the back roll is wrinkled, and then the uniformity of slurry on the surface coating of the current collector is influenced, and further the performance consistency of a battery grade sheet is influenced, so the driving rod is driven to move in the engineering of adjusting the tension force movement through the tensioning mechanism, and then the driving rod drives the oscillating rod to rotate around the fixing seat, and then the oscillating rod drives the pressing rod to move, and then the pressing rod drives the pressing roller to move on the surface of the back roll (the pressing roller moves between the tangent point of the contact of the current collector and the back roll and the nearest distance between the coating roller and the back roll), because a spring is arranged between the pressing rod and the oscillating rod, and then the current collector is pressed on the back roll all the time through the stretching of the spring, and further the tension force between the coating mechanism and the unwinding mechanism is continuously generated due to the continuous reduction of the diameter of the coiled current collector When the current collector is changed, the tensioning mechanism is not adjusted in time, so that the current collector is loosened too much and is folded, the current collector is ensured to be flat and tightly attached to the back roller when passing through the surface of the back roller, the condition that the slurry is coated on the surface of the current collector to cause uneven coating is avoided, the uniformity of the slurry coated on the surface of the current collector is ensured, and the performance consistency of a battery level piece is ensured; meanwhile, the compression roller moves along with the movement of the tensioning mechanism, so that the pressure between the compression roller and the back roller is relatively stable, the surface tension of the current collector is greater than that of the coating solution, the slurry can be uniformly and flatly spread, the coating quality is improved, the quality of a battery grade sheet is improved, and the quality of a lithium battery is improved; the compression roller avoids the contact between the coating surface of the current collector and the coating roller when the tension force of the current collector changes, and further avoids the coating roller from scratching the surface of the coating slurry of the current collector, and further ensures the quality of the battery grade sheet.
Preferably, the tensioning mechanism comprises a tensioning roller, a connecting rod, a rotating shaft, a supporting seat, a first worm wheel, a first worm and a motor; the other end of the driving rod is rotatably connected to a rotating shaft of the tension roller; the supporting seat is fixedly connected to the ground; the supporting seat is rotatably connected with the rotating shaft; the middle part of the rotating shaft is fixedly connected with the first worm wheel; the first worm is in meshed transmission with the first worm wheel; the first worm is rotationally connected to the supporting seat; one end of the first worm is fixedly connected to a rotating shaft of the motor; the mounting seat of the motor is fixedly connected to the supporting seat; the two ends of the rotating shaft are provided with the connecting rods; one end of the connecting rod is fixedly connected to the rotating shaft; the other end of the connecting rod is rotatably connected to a rotating shaft of the tensioning roller; a flexible layer is arranged on the tooth surface of the first worm.
When the current collector tensioning device works, when the tensioning force of a driven current collector changes, the first worm is driven to rotate through the motor, the first worm drives the turbine to rotate, the turbine drives the rotating shaft to rotate, the rotating shaft drives the connecting rod to swing, the connecting rod drives the tensioning roller to move, and the tensioning force of the current collector is adjusted; because the tooth surface of the first worm is provided with the flexible layer, the flexible layer plays a role in buffering when the motor is started to drive the turbine to rotate, the connecting rod is prevented from swinging due to impact force when the motor is started, the tension of a current collector is prevented from being influenced, slurry can be uniformly and flatly spread, the coating quality is improved, the quality of a battery level piece is improved, and the quality of a lithium battery is improved.
Preferably, two ends of the rotating shaft of the coating guide roller are respectively connected to the cross bar of the supporting frame through a first electric push rod and a second electric push rod; the cylinder bodies of the first electric push rod and the second electric push rod are fixedly connected to the supporting frame; the first connector at the end part of the extending end of the first electric push rod is rotationally connected to the rotating shaft of the coating guide roller; a first pressure sensor is arranged between the first connector and the guide rod of the first electric push rod; a second connector at the end part of the extending end of the second electric push rod is rotatably connected to a rotating shaft of the coating guide roller; a second pressure sensor is arranged between the second connector and the guide rod of the second electric push rod.
When the device works, a current collector is unwound from an unwinding mechanism and passes through a tensioning mechanism and then bypasses a coating guide roller to enter a coating mechanism, if the current collector passes through the coating guide roller, the current collector is wrinkled when the stress on the two sides of the current collector deviates, and then the current collector in a wrinkled state enters the coating mechanism, and further slurry is unevenly distributed on the current collector, therefore, a first electric push rod and a second electric push rod are respectively arranged at the two ends of a rotating shaft of the coating guide roller, a first pressure sensor is arranged between a guide rod of the first electric push rod and a first connector, a second pressure sensor is arranged between a guide rod of the second electric push rod and a second connector, when the current collector passes through the coating guide roller, the first pressure sensor and the second pressure sensor respectively measure the pressure values on the two sides of the current collector (the pressure value measured by the first pressure sensor is P1, the pressure value measured by the second sensor and the second sensor is marked as P2), the first sensor sends the P1 and the second sensor to a temporary storage element in the controller, a calculation element in the controller calculates the difference value between the P1 and the P2 in the temporary storage unit and a set pressure value in the controller (the pressure value set in the controller is marked as Pe), if the difference value between the P1 and the Pe is a positive value (marked as Pz 1), the calculation element in the controller calculates the distance (marked as Sz 1) required to move according to the Pz1, then the first electric push rod is controlled by the controller to retract the Sz1 distance, if the difference value between the P1 and the Pe is a negative value (marked as Pf 1), the calculation element in the controller calculates the distance (marked as Sf 1) required to move according to Pf1, and then the controller controls the first electric push rod to extend out the Sf1 distance, after the first sensor finishes the repeated calculation, P1 is sent to the controller for repeated calculation, when the difference value between P1 and P2 is 0, one round of calculation is finished, after the interval set time, P2 measured by the second sensor and the first sensor perform the same calculation and comparison, the controller controls the second electric push rod to retract or extend, and further when the values of the first sensor and the second sensor deviate from the set pressure value, the pressure values received by the two sides of the current collector are automatically adjusted through the extension or retraction of the first electric push rod and the second electric push rod, so that the current collector is prevented from wrinkling due to uneven stress on the two sides, the surface smoothness is guaranteed when the current collector passes through a coating mechanism, the slurry is uniformly and flatly coated on the surface of the current collector, the coating quality is improved, the quality of a battery grade is improved, and the quality of a lithium battery is improved; meanwhile, the tensioning mechanism can automatically adjust the tensioning wheel according to the numerical values of the first pressure sensor and the second pressure sensor to control the tensioning degree of the current collector.
Preferably, a leveling scraper is arranged above the back roll; flexible baffles are arranged at two ends of a coating area formed among the back roll, the coating roll, the slurry scraper and the leveling scraper; the flexible baffle is fixedly connected to the support frame through a support; a channel is arranged at the edge of the flexible baffle plate, which contacts the back roller and the coating roller; a compression rope is arranged in the channel; two ends of the pressing rope are respectively and fixedly connected to the side wall of the flexible baffle close to one side of the leveling scraper and one side of the slurry scraper; the middle part of the pressing rope pull rope is provided with a sheet pull rope; one end of the sheet pull rope is fixedly connected to the pressing rope; the other end of the sheet pull rope penetrates through the space between the back roller and the coating roller and then is connected to the fixed seat; the middle part of the sheet pull rope is provided with an elastic rope.
During operation, the coating roller rotates to drive slurry in the slurry box to adhere to the surface of the coating roller in the coating process, the slurry adhered to the surface of the coating roller is transferred to the surface of a moving current collector after passing through a gap between the slurry scraper and the coating roller, the influence of the tension of the current collector and the flowability of the slurry is received in the transferring process, and the smoothness of the upper surface of the slurry on the surface of the current collector is poor; when the slurry is transferred to the surface of the collector moving on the backing roll from the coating roll, a lace phenomenon (uneven edge) can occur, meanwhile, a small amount of slurry can be reserved in a coating area by the leveling scraper when the leveling scraper is leveled, and then the slurry can be caused to move towards two sides, so that the coating surface is overlarge, a lace is caused, and the utilization rate of the slurry is reduced.
Preferably, the leveling blade and the backing roll are both connected to separate support columns; the back roll is rotatably connected to the independent support columns, and anti-seismic treatment is performed between the ground surfaces of the independent support columns.
The during operation, because the flattening scraper carries out the flattening to the thick liquids surface, consequently, the vibrations that external equipment operation produced can disturb the flattening scraper, make the stability variation of flattening scraper, and then influence the flattening effect on flattening scraper flattening thick liquids surface, consequently, through connecting flattening scraper and backing roll on independent support column, and set up the sand pit below independent support column, support alone and connect on the concrete ground of sand pit top, and then avoided the vibrations that braced frame and subaerial other equipment operations produced to produce the disturbance to flattening scraper and backing roll, and then avoid influencing the flattening effect of flattening scraper to the mass flow body surface thick liquids.
Preferably, the leveling scraper is connected to the independent supporting column through a fine adjustment mechanism; the fine adjustment mechanism comprises a sliding seat, a second worm wheel, a second worm and a connecting shaft; the leveling scraper is rotationally connected to the sliding seat; the sliding seat is connected to the independent supporting column in a sliding manner; the sliding seats are symmetrically provided with the connecting shafts; one end of the connecting shaft is rotatably connected to the cross rod of the independent supporting column; the other end of the connecting shaft is provided with a thread structure; the other end of the connecting shaft is in threaded connection with the sliding seat; one side of the connecting shaft, which is close to the cross bar of the independent support column, is fixedly connected with the second worm gear; the second worm wheel is in meshed transmission with the second worm; the second worm is rotationally connected to the cross rod of the independent support column.
During operation, through adjusting the clearance between flattening scraper and the backing roll, improve the planarization on the mass flow body sizing agent surface, because the thickness of coating is with micron as the unit, and then assembly precision is great to the clearance between flattening scraper and the backing roll when the flattening scraper passes through the fine-tuning assembly on independent support column, consequently confirm the thickness of adjustment feeler according to the thickness of slurry coating when the adjustment, when adjusting with the feeler fill in between flattening scraper and the backing roll (the both ends of flattening scraper fill in), then rotate two worms simultaneously, and then No. two worms drive No. two worm wheel rotations, no. two worm wheel drive connecting axle rotations, the connecting axle drives the connecting axle and moves, and then drive the flattening scraper and move to the backing roll, stop two worms of simultaneous rotation when flattening scraper contacts the feeler, then rotate No. two worms of flattening scraper one end No. two, make the one end feeler of flattening scraper, then No. two worms of the flattening scraper other end, make the flattening scraper also sticis pressed the feeler, remove the feeler is removed through the both ends of independent adjustment scraper, and then the assembly precision between flattening scraper and the backing roll improves the precision of the transmission of the smooth transmission of the transmission that the clearance between the flattening scraper and the backing roll, and the assembly precision of the sizing agent has improved the quality of the transmission of the battery.
Preferably, a turnover cover is arranged on the slurry box; the flip cover can be turned over and opened; a sealing cover is arranged above the space between the two flexible baffles; the sealing cover is fixedly connected to the flexible baffle.
During operation, through setting up flip on the thick liquids case, and set up the closing cap between two flexible baffle, and then prolonged the speed of scattering and disappearing of thick liquids upper temperature, and then make the homogeneity of thick liquids viscosity in the thick liquids case, and then avoid making the sizing material mobility to appear the difference because of thick liquids viscosity is inhomogeneous in the thick liquids case, and then guaranteed sizing material from scribbling when roller transfer to the mass flow body on the sizing material evenly coats on the mass flow body, and then improved the quality of coating, and then improved the quality of several batteries, and then improved the quality that the battery is right.
Preferably, a dustproof soundproof cover is arranged on the outer side of the supporting frame; the dustproof and soundproof cover is fixedly connected to the supporting frame.
The during operation, set up dustproof sound-proof housing through the outside at braced frame, corresponding anti-roll mechanism simultaneously, the position department of winding mechanism and thick liquids case is provided with the door, and then keep apart the inside space of coating equipment with the external world, and then avoid external dust to fall into on the current collector surface and the coating does not pass through on drying by the fire the dry battery pole piece, and then avoided battery pole piece surface to appear scribbling defects such as some filths, the resonance of mass flow is aroused in the sound wave vibrations of avoiding external equipment to produce simultaneously, and then influence the homogeneity of coating, and then the quality of battery pole piece has been improved.
The invention has the following beneficial effects:
1. according to the invention, the tensioning force of a current collector is controlled by the tensioning mechanism, so that the tensioning force of the current collector is in a stable state, when the tensioning force of the current collector is changed, the tensioning mechanism is moved and adjusted, in the process, the interaction force between the current collector and a back roller contact surface is changed (the tightness degree of contact between the current collector and the back roller is changed), so that the current collector near the back roller is wrinkled, the uniformity of coating of slurry on the surface of the current collector is influenced, and further the performance uniformity of a battery grade sheet is influenced, therefore, the tensioning mechanism drives the driving rod to move in the process of adjusting the tensioning force motion, further the driving rod drives the oscillating rod to rotate around the fixing seat, further the oscillating rod drives the pressing rod to move, further the pressing rod drives the pressing roller to move on the surface of the back roller (the pressing roller moves between the contact tangent point of the current collector and the back roller and the nearest distance between the coating roller and the back roller), because a spring is arranged between the pressing rod and the oscillating rod, further the spring is stretched, so that the current collector is always pressed on the back roller tightly onto the back roller when the tensioning force between the current collector and the surface of the current collector is not adjusted, and the current collector is not too much, and the uniformity of the surface of the current collector is ensured, and the uniformity of the battery grade sheet coated when the current collector is not even when the surface of the current collector is coated slurry is ensured due to be coated, and the rolled up, further, and the wrinkles is the back roller is not even when the current collector is coated on the surface of the current collector, and the battery grade sheet is coated, and the battery, and the back roller is not even and the current collector is ensured; meanwhile, the compression roller moves along with the movement of the tensioning mechanism, so that the pressure between the compression roller and the back roller is relatively stable, the surface tension of the current collector is ensured to be greater than that of the coating solution, the slurry can be uniformly and flatly spread, the coating quality is improved, the quality of a battery grade piece is improved, and the quality of a lithium battery is improved; the compression roller avoids the contact between the coating surface of the current collector and the coating roller when the tension force of the current collector changes, and then the coating roller is prevented from scratching the surface of the coating slurry of the current collector, and the quality of a battery grade sheet is ensured.
2. When the tension force of a driven current collector is changed, the first worm is driven to rotate through the motor, the first worm drives the turbine to rotate, the turbine drives the rotating shaft to rotate, the rotating shaft drives the connecting rod to swing, the connecting rod drives the tension roller to move, and the tension force of the current collector is adjusted; because the tooth surface of the first worm is provided with the flexible layer, the flexible layer plays a role in buffering when the motor is started to drive the turbine to rotate, the connecting rod is prevented from swinging due to impact force when the motor is started, the tension of a current collector is prevented from being influenced, slurry can be uniformly and flatly spread, the coating quality is improved, the quality of a battery level piece is improved, and the quality of a lithium battery is improved.
3. In the invention, a first electric push rod and a second electric push rod are respectively arranged at two ends of a rotating shaft of a coating guide roller, a first pressure sensor is arranged between a guide rod of the first electric push rod and a first connector, a second pressure sensor is arranged between a guide rod of the second electric push rod and a second connector, when a current collector passes through the coating guide roller, the first pressure sensor and the second pressure sensor respectively measure pressure values at two sides of the current collector (the pressure value measured by the first sensor is P1, the pressure value measured by the second sensor is P2), the first sensor sends P1 and the second sensor P2 to a temporary storage element in a controller, a calculation element in the temporary storage element is controlled to calculate difference values between P1 and P2 in the temporary storage element and a set pressure value in the controller (the pressure value set in the controller is Pe), if the difference value of the P1-Pe is a positive value (marked as Pz 1), a calculating element in the controller calculates the distance (marked as Sz 1) required to move according to the Pz1, and further controls the first electric push rod to retract to the Sz1 distance through the controller, if the difference value of the P1-Pe is a negative value (marked as Pf 1), the calculating element in the controller calculates the distance (marked as Sf 1) required to move according to the Pf1, further controls the first electric push rod to extend to the Sf1 distance through the controller, completes the first sensor to send the P1 to the controller for repeated calculation, finishes the first calculation when the difference value of the P1-P2 is 0, performs the first calculation after the set time interval, performs the same calculation on the P2 measured by the second sensor and the first sensor, and controls the second electric push rod to retract or extend through the controller, further when the value of the first sensor and the second sensor deviates from the set pressure value, the pressure values on two sides of the current collector are automatically adjusted through the extension or retraction of the first electric push rod and the second electric push rod, so that the current collector is prevented from being wrinkled due to uneven stress on two sides of the current collector, the surface smoothness of the current collector when the current collector passes through a coating mechanism is ensured, the slurry is uniformly and flatly coated on the surface of the current collector, the coating quality is improved, the quality of a battery grade piece is improved, and the quality of a lithium battery is improved; meanwhile, the tensioning mechanism can automatically adjust the tensioning wheel according to the numerical values of the first pressure sensor and the second pressure sensor to control the tensioning degree of the current collector.
4. According to the invention, the leveling scraper is arranged above the back roll, and the gap between the leveling scraper and the surface of the current collector on the back roll is adjusted, so that the distance between the leveling scraper and the surface of the current collector is slightly smaller than the thickness of slurry transferred onto the surface of the current collector after passing through the gap between the slurry scraper and the coating roll (the thickness of the slurry passing through the leveling scraper meets the design requirement), and then the slurry on the current collector is leveled by the leveling scraper, so that the slurry is more uniformly distributed on the current collector, the surface of the slurry is smoother, the surface quality of a coated battery grade piece is improved, the quality of a battery is improved, the thickness of the slurry on the surface of the current collector can be more accurately controlled, the influence of too thin or too thick slurry on the rolling process of the battery grade piece during coating is avoided, the performance consistency of the battery grade piece is ensured, and the quality of the battery is improved; when the slurry is transferred to the surface of the collector moving on the backing roll from the coating roll, a lace phenomenon (uneven edge) can occur, meanwhile, a small amount of slurry can be reserved in a coating area by the leveling scraper when the leveling scraper is leveled, and then the slurry can be caused to move towards two sides, so that the coating surface is overlarge, a lace is caused, and the utilization rate of the slurry is reduced.
5. According to the invention, the leveling scraper and the back roll are connected to the independent supporting columns, and the sand pit is arranged below the independent supporting columns to independently support the concrete ground connected above the sand pit, so that the leveling scraper and the back roll are prevented from being disturbed by vibration generated by operation of the supporting frame and other equipment on the ground, and the leveling effect of the leveling scraper on the surface slurry of the current collector is further prevented from being influenced.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of a first overall construction of a coating apparatus according to the present invention;
FIG. 2 is an exploded view of the coating apparatus of the present invention;
FIG. 3 is a front view of a coating apparatus of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is an enlarged view of a portion of FIG. 3 at B;
FIG. 6 is a schematic view of the attachment of the coating guide roll in the present invention;
FIG. 7 is a schematic view of the construction of the flexible baffle and the hold-down cord of the present invention;
FIG. 8 is a schematic view of the leveling blade adjustment configuration of the present invention;
in the figure: the device comprises a supporting frame 1, an unreeling mechanism 2, a tensioning mechanism 3, a tensioning roller 31, a connecting rod 32, a rotating shaft 33, a supporting seat 34, a first worm wheel 35, a first worm 36, a guide mechanism 4, an unreeling guide roller 41, a coating guide roller 42, a reeling guide roller 43, a coating mechanism 5, a back roller 51, a coating roller 52, a slurry scraper 53, a slurry box 54, a turnover cover 541, a leveling scraper 55, a flexible baffle 56, a sealing cover 561, a pressing rope 57, a sheet-shaped pull rope 58, an elastic rope 59, a pressing crease-resistant mechanism 6, a fixed seat 61, a swing rod 62, a pressing rod 63, a pressing roller 64, a driving rod 65, a spring 66, a first electric push rod 7, a second electric push rod 71, a first pressure sensor 72, a second pressure sensor 73, an independent supporting column 8, a sliding seat 81, a second worm wheel 82, a second worm 83, a connecting shaft 84 and a dustproof and soundproof cover 9.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 8, a new energy automobile lithium battery pole piece coating device includes a support frame 1, an unwinding mechanism 2, a tensioning mechanism 3, a guide mechanism 4, a coating mechanism 5, a drying mechanism, a cold pressing mechanism and a winding mechanism; the supporting frame 1 is fixedly connected to the ground; one end of the supporting frame 1 is provided with the unwinding mechanism 2; the unwinding mechanism 2 is used for unwinding the coiled current collector; the other end of the supporting frame 1 is provided with the winding mechanism; the winding mechanism is used for winding the compacted battery level piece;
the coating mechanism 5 is arranged behind the unwinding mechanism 2 and is used for coating slurry on the surface of the discharged current collector; the coating mechanism 5 comprises a back roll 51, a coating roll 52, a slurry scraper 53 and a slurry box 54; the support frame 1 is rotatably connected with the coating roller 52; the back roller 51 is arranged on one side of the coating roller 52; the other side of the coating roller 52 is provided with the slurry box 54; the slurry box 54 is fixedly connected to the support frame 1; the slurry scraper 53 is arranged above the coating roller 52;
the drying mechanism is arranged behind the coating mechanism 5 and is used for drying the current collector coated with the slurry;
the cold pressing mechanism is arranged behind the drying mechanism and used for compacting the dried battery grade sheet;
the winding mechanism is arranged behind the cold pressing mechanism and is used for winding the compacted battery grade sheet;
the tensioning mechanism 3 is arranged between the unreeling mechanism 2 and the coating mechanism 5; the tensioning mechanism 3 is used for controlling the tensioning force of the current collector in the discharging process;
the guide mechanism 4 is arranged between the unwinding mechanism 2 and the winding mechanism; the guide mechanism 4 comprises an uncoiling guide roller 41, a coating guide roller 42 and a coiling guide roller 43; an uncoiling guide roller 41 is arranged between the tensioning mechanism 3 and the uncoiling mechanism 2; the unwinding guide roller 41 is rotatably connected to the support frame 1; a coating guide roller 42 is arranged between the tensioning mechanism 3 and the coating mechanism 5; the coating guide roller 42 is connected to the support frame 1; the coiling guide roller 43 is arranged between the coiling mechanism and the cold pressing mechanism; the winding guide roller 43 is rotatably connected to the support frame 1; the coating equipment also comprises a pressing crease-resist mechanism 6; the pressing crease-resistance mechanism 6 comprises a fixed seat 61, a swing rod 62, a pressing rod 63, a pressing roller 64, a driving rod 65 and a spring 66; the pressure roller 64 is arranged below the coating roller 52 and the back roller 51 and is in contact with the back roller 51; the two ends of the rotating shaft of the pressing roller 64 are provided with the pressing rods 63; one end of the pressing rod 63 is rotatably connected to a rotating shaft of the pressing roller 64; the other end of the pressing rod 63 is provided with the swinging rod 62; the other end of the pressing rod 63 is rotatably connected to one end of the swinging rod 62; the other end of the swing lever 62 is provided with the driving lever 65; one end of the driving rod 65 is rotatably connected to the other end of the swinging rod 62; the other end of the driving rod 65 is connected to the tensioning mechanism 3; the middle part of the swing rod 62 is rotatably connected to the fixed seat 61; the fixed seat 61 is fixedly connected to the cross bar of the support frame 1; the spring 66 is arranged between one end of the swing rod 62 close to the driving rod 65 and one end of the pressing rod 63 close to the pressing roller 64; the two ends of the spring 66 are fixedly connected to the swing rod 62 and the pressing rod 63.
When the current collector works, slurry is continuously or intermittently and uniformly coated on the surface of a transmission current collector according to different lithium ion battery core manufacturing processes during the production of a lithium battery, because the current collector is in a coiled shape, after the current collector is unfolded, the current collector sequentially passes through the uncoiling guide roller 41, the tensioning mechanism 3, the coating guide roller 42, the coating mechanism 5, the drying mechanism and the cold pressing mechanism, a compacted battery grade sheet is coiled and then stored and transported, the current collector is continuously and uninterruptedly transmitted in the coating process, because the diameter of the coiled current collector is continuously reduced in the process of producing the battery grade sheet, and the tensioning force of the current collector in the transmission process is continuously changed, the tensioning force of the current collector is controlled by the tensioning mechanism 3, so that the tensioning force of the current collector is in a stable state, and when the tensioning force of the current collector is changed, the tensioning mechanism 3 moves and adjusts, in the process, the interaction force of the contact surface of the current collector and the back roller 51 changes (the tightness degree of the contact between the current collector and the back roller 51 changes), so that the current collector near the back roller 51 wrinkles, the uniformity of slurry coating on the surface of the current collector is affected, and the performance consistency of a battery grade sheet is affected, therefore, the tensioning mechanism 3 drives the driving rod 65 to move in the process of adjusting the tensioning force motion, the driving rod 65 drives the oscillating rod 62 to rotate around the fixing seat 61, the oscillating rod 62 drives the pressing rod 63 to move, the pressing rod 63 drives the pressing roller 64 to move on the surface of the back roller 51 (the pressing roller 64 moves between the tangent point of the contact of the current collector and the back roller 51 and the closest distance between the coating roller 52 and the back roller 51), and as the spring 66 is arranged between the pressing rod 63 and the oscillating rod 62, the spring 66 stretches, so that the current collector is pressed on the back roller 51 by the pressing roller 64 all the time, further, the phenomenon that the tension of the current collector between the coating mechanism 5 and the unwinding mechanism 2 is too loose and wrinkles are generated when the tension of the current collector between the back roller 51 and the current collector is not adjusted timely due to the fact that the diameter of the coiled current collector is continuously reduced, and further the current collector is enabled to be flat and tightly attached to the back roller 51 when passing through the surface of the back roller 51, so that the condition that the coating is uneven due to the fact that slurry is coated on the surface of the current collector is avoided, the uniformity of the slurry coated on the surface of the current collector is guaranteed, and the performance consistency of battery-grade sheets is guaranteed; meanwhile, the pressing roller 64 moves along with the movement of the tensioning mechanism 3, so that the pressure between the pressing wheel and the back roller 51 is relatively stable, the surface tension of the current collector is ensured to be greater than that of the coating solution, the slurry can be uniformly and flatly spread, the coating quality is improved, the quality of a battery grade piece is improved, and the quality of a lithium battery is improved; the compression roller 64 prevents the current collector from contacting the coating surface of the coating roller 52 when the tension of the current collector changes, so that the coating roller 52 is prevented from scratching the surface of the current collector coating slurry, and the quality of the battery grade sheet is ensured.
As shown in fig. 3 to 5, the tensioning mechanism 3 includes a tensioning roller 31, a connecting rod 32, a rotating shaft 33, a supporting seat 34, a first worm wheel 35, a first worm 36 and a motor; the other end of the driving rod 65 is rotatably connected to a rotating shaft of the tension roller 31; the support seat 34 is fixedly connected to the ground; the supporting seat 34 is rotatably connected with the rotating shaft 33; the middle part of the rotating shaft 33 is fixedly connected with the first worm wheel 35; the first worm 36 is in meshed transmission with the first worm wheel 35; the first worm 36 is rotatably connected to the support seat 34; one end of the first worm 36 is fixedly connected to a rotating shaft of the motor; the mounting seat of the motor is fixedly connected to the supporting seat 34; the connecting rods 32 are arranged at two ends of the rotating shaft 33; one end of the connecting rod 32 is fixedly connected to the rotating shaft 33; the other end of the connecting rod 32 is rotatably connected to a rotating shaft of the tension roller 31; a flexible layer is arranged on the tooth surface of the first worm 36.
When the device works, when the tension force of a driven current collector changes, the motor drives the first worm 36 to rotate, the first worm 36 drives the turbine to rotate, the turbine drives the rotating shaft 33 to rotate, the rotating shaft 33 drives the connecting rod 32 to swing, and the connecting rod 32 drives the tension roller 31 to move, so that the tension force of the current collector is adjusted; because the tooth surface of the first worm 36 is provided with the flexible layer, when the motor is started to drive the turbine to rotate, the flexible layer plays a role in buffering, so that the impact force generated when the motor is started is avoided from swinging the connecting rod 32, the influence on the tension of the current collector is avoided, the slurry can be uniformly and flatly spread, the coating quality is improved, the quality of a battery grade piece is improved, and the quality of a lithium battery is improved.
As shown in fig. 3 and 6, two ends of the rotating shaft of the coating guide roller 42 are respectively connected to the cross bar of the supporting frame 1 through a first electric push rod 7 and a second electric push rod 71; the cylinder bodies of the first electric push rod 7 and the second electric push rod 71 are fixedly connected to the supporting frame 1; the first connector at the end part of the extending end of the first electric push rod 7 is rotatably connected to the rotating shaft of the coating guide roller 42; a first pressure sensor 72 is arranged between the first connector and the guide rod of the first electric push rod 7; a second connector at the end part of the extending end of the second electric push rod 71 is rotatably connected to a rotating shaft of the coating guide roller 42; a second pressure sensor 73 is arranged between the second connector and the guide rod of the second electric push rod 71.
When the device works, a current collector is unwound from the unwinding mechanism 2 and passes through the tensioning mechanism 3, then bypasses the coating guide roller 42 and enters the coating mechanism 5, if deviation occurs in the stress on the two sides of the current collector when the current collector passes through the coating guide roller 42, the current collector is wrinkled, and then the current collector in the wrinkled state enters the coating mechanism 5, so that slurry is unevenly distributed on the current collector, therefore, a first electric push rod 7 and a second electric push rod 71 are respectively arranged at the two ends of the rotating shaft of the coating guide roller 42, a first pressure sensor 72 is arranged between a guide rod of the first electric push rod 7 and a first connector, a second pressure sensor 73 is arranged between a guide rod of the second electric push rod 71 and a second connector, and when the current collector passes through the coating guide roller 42, the first pressure sensor and the second pressure sensor 73 respectively measure pressure values on the two sides of the current collector (the pressure value measured by the first pressure sensor is P1, the pressure value measured by the sensor II is recorded as P2), the sensor I sends the P1 and the sensor II to a temporary storage element in the controller, a calculation element in the controller calculates the difference value between the P1 and the P2 in the temporary storage unit and a set pressure value in the controller (the pressure value set in the controller is recorded as Pe), if the difference value between the P1 and the Pe is a positive value (recorded as Pz 1), the calculation element in the controller calculates the distance (recorded as Sz 1) required to move according to the Pz1, then the controller controls the electric push rod I7 to retract the Sz1 distance, if the difference value between the P1 and the Pe is a negative value (recorded as Pf 1), the calculation element in the controller calculates the distance (recorded as Sf 1) required to move according to Pf1, the controller is used for controlling the first electric push rod 7 to extend out of the Sf1 distance, the first sensor sends P1 to the controller for repeated calculation, when the difference value between P1 and P2 is 0, one round of calculation is finished, one round of calculation is carried out after the interval set time, P2 measured by the second sensor and the first sensor are subjected to the same calculation comparison, the controller is used for controlling the second electric push rod 71 to retract or extend, when the values of the first sensor and the second sensor are deviated from the set pressure value, the extending or retracting of the first electric push rod 7 and the second electric push rod 71 automatically adjusts the pressure values on two sides of the current collector, the phenomenon that the current collector is wrinkled due to uneven stress on two sides of the current collector is avoided, the surface of the current collector is guaranteed to be flat when the current collector passes through the coating mechanism 5, the uniform and flat coating of slurry on the surface of the current collector is guaranteed, the coating quality is improved, the quality of a battery grade is improved, and the quality of a lithium battery is improved; meanwhile, the tensioning mechanism 3 can automatically adjust the tensioning wheel according to the values of the first pressure sensor 72 and the second pressure sensor 73 to control the tensioning degree of the current collector.
As shown in fig. 3, 4 and 7, a leveling blade 55 is provided above the back roll 51; flexible baffle plates 56 are arranged at two ends of a coating area formed among the back roll 51, the coating roll 52, the slurry scraper 53 and the leveling scraper 55; the flexible baffle 56 is fixedly connected to the support frame 1 through a support; the edge of the flexible baffle 56 contacting the back roller 51 and the coating roller 52 is provided with a channel; a compression rope 57 is arranged in the channel; two ends of the pressing rope 57 are respectively fixedly connected to the side walls of the flexible baffle plates 56 close to the leveling scraper 55 and one side of the pulp scraper 53; the middle part of the pull rope of the pressing rope 57 is provided with a sheet pull rope 58; one end of the sheet pull rope 58 is fixedly connected to the pressing rope 57; the other end of the sheet-shaped pull rope 58 penetrates through the space between the back roller 51 and the coating roller 52 and then is connected to the fixed seat 61; an elastic rope 59 is arranged in the middle of the sheet-shaped pull rope 58.
During operation, the coating roller 52 rotates to drive slurry in the slurry box 54 to adhere to the surface of the coating roller 52 in the coating process, the slurry adhered to the surface of the coating roller 52 is transferred to the surface of a moving current collector after passing through a gap between the slurry scraper 53 and the coating roller 52, the influence of the tension of the current collector and the fluidity of the slurry is received in the transferring process, and further the flatness of the upper surface of the slurry on the surface of the current collector is poor, therefore, the leveling scraper 55 is arranged above the back roller 51, the gap between the leveling scraper 55 and the surface of the current collector is adjusted, the distance between the leveling scraper 55 and the surface of the current collector is slightly smaller than the thickness of the slurry transferred to the surface of the current collector after passing through the gap between the slurry scraper 53 and the coating roller 52 (the thickness of the slurry passing through the leveling scraper 55 meets the design requirement), and further, the slurry on the current collector is leveled by the leveling scraper 55, so that the distribution of the slurry on the current collector is more uniform, the surface of the slurry is smoother, the surface of the slurry is more smooth, the surface of a coated battery piece is improved, the quality of the battery piece is further, and the influence of the thickness of the current collector is avoided, and the rolling performance of the battery piece is improved, and the battery piece is further, and the influence of the battery piece is avoided; when the slurry is transferred from the coating roller 52 to the surface of the collector moving on the backing roller 51, a lace phenomenon (uneven edge) can occur, and meanwhile, a small amount of slurry can be left in a coating area by the leveling scraper 55 during leveling, so that the slurry can move towards two sides, the coating surface is too large, a lace is caused, and the utilization rate of the slurry is reduced.
As shown in fig. 1-3, the screed 55 and the backing roll 51 are both attached to separate support posts 8; the back roll 51 is rotatably connected to the independent support columns 8, and anti-seismic treatment is performed between the ground surfaces of the independent support columns 8.
In operation, because flattening scraper 55 carries out the flattening to the thick liquids surface, consequently, vibrations that external equipment operation produced can disturb flattening scraper 55, make flattening scraper 55's stability variation, and then influence the flattening effect on flattening scraper 55 flattening thick liquids surface, consequently, through connecting flattening scraper 55 and backing roll 51 on independent support column, and set up the sand pit in independent support column 8 below, support the concrete of connection above the sand pit alone subaerial, and then avoided the vibrations that braced frame 1 and subaerial other equipment operations produced to produce the disturbance to flattening scraper 55 and backing roll 51, and then avoid influencing the flattening effect of flattening scraper 55 to the thick liquids of mass flow body surface.
As shown in fig. 4 and 8, the leveling blades 55 are attached to the individual support columns 8 by a fine adjustment mechanism; the fine adjustment mechanism comprises a sliding seat 81, a second worm wheel 82, a second worm 83 and a connecting shaft 84; the leveling blade 55 is rotatably connected to the sliding seat 81; the sliding seat 81 is connected to the independent supporting column 8 in a sliding manner; the sliding seat 81 is symmetrically provided with the connecting shafts 84; one end of the connecting shaft 84 is rotatably connected to the cross bar of the independent supporting column 8; the other end of the connecting shaft 84 is provided with a thread structure; the other end of the connecting shaft 84 is in threaded connection with the sliding seat 81; the second worm gear 82 is fixedly connected to one side, close to the cross bar of the independent support column 8, of the connecting shaft 84; the second worm wheel 82 is in meshed transmission with the second worm 83; the second worm 83 is rotatably connected to the cross bar of the independent support column 8.
During operation, through adjusting the clearance between leveling blade 55 and backing roll 51, improve the smoothness of the sizing agent surface on the current collector, because the thickness of coating is in micron unit, and then assembly precision is great to the clearance between leveling blade 55 and backing roll 51 when leveling blade 55 assembles on independent support column 8 through fine-tuning, consequently confirm the thickness of adjustment clearance gauge according to the thickness of sizing agent coating when adjusting, plug the gauge into between leveling blade 55 and backing roll 51 (the both ends of leveling blade 55 are filled in) when adjusting, subsequently rotate two worms 83 simultaneously, and then No. two worms 83 drive No. two worm wheels 82 and rotate, no. two worm wheels 82 drive connecting axle 84 and rotate the connecting axle, drive sliding seat 81 and move when adjusting, and then drive leveling blade 55 to the backing roll 51 and move, stop two worms that rotate simultaneously after leveling blade 55 contacts the clearance, then rotate No. two worms 83 on one end of leveling blade 55, make one end of leveling blade 55 sticis compressed, then No. two worms 83 on the other end of leveling blade 55, and then the adjustment clearance between the leveling blade 55 and the backing roll can improve the quality of the battery through the clearance between the leveling blade 55 and the clearance of the assembly precision of the backing roll, and the clearance of the leveling blade 55 have improved the clearance between the battery.
As shown in fig. 3 and 4, the slurry tank 54 is provided with a turnover cover 541; the flip 541 can be turned over and opened; a sealing cover 561 is arranged above the space between the two flexible baffles 56; the cover 561 is fixedly connected to the flexible baffle 56.
In operation, through setting up flip 541 on thick liquids case 54 to set up closing cap 561 between two flexible baffle 56, and then prolonged the speed of scattering and disappearing of thick liquids upper strata temperature, and then make the homogeneity of thick liquids viscosity in thick liquids case 54, and then avoid making the sizing material mobility to appear the difference because of thick liquids viscosity is inhomogeneous in thick liquids case 54, and then guaranteed that sizing material evenly coats on the mass flow body when sizing material shifts to the mass flow body from scribbling roller 52, and then improved the quality of coating, and then improved the quality of several pieces of battery, and then improved the quality of battery pair.
As shown in fig. 1 and 2, a dust and sound proof cover 9 is arranged on the outer side of the support frame 1; the dust-proof and sound-proof cover 9 is fixedly connected to the support frame 1.
The during operation, set up dustproof sound-proof housing 9 through the outside at braced frame 1, corresponding anti-roll mechanism simultaneously, the position department of winding mechanism and thick liquids case 54 is provided with the door, and then keep apart the inside space of coating equipment with the external world, and then avoid external dust to fall into on the current collector surface and the coating does not dry the battery pole piece by baking, and then avoided the battery pole piece surface to appear scribbling some defects such as dirt, the sound wave vibrations of avoiding external equipment to produce simultaneously arouse the resonance of current collector, and then influence the homogeneity of coating, and then the quality of battery pole piece has been improved.
When the tension adjusting mechanism works, the tension of the current collector is controlled through the tensioning mechanism 3, so that the tension of the current collector is in a stable state, when the tension of the current collector changes, the tension adjusting mechanism 3 moves to adjust, in the process, the interaction force between the current collector and the contact surface of the back roller 51 changes (the tightness degree of contact between the current collector and the back roller 51 changes), so that the current collector near the back roller 51 wrinkles, further the uniformity of coating of slurry on the surface of the current collector is influenced, and further the performance uniformity of a battery grade sheet is influenced, therefore, the tensioning mechanism 3 drives the driving rod 65 to move in the process of adjusting the tension movement, further the driving rod 65 drives the oscillating rod 62 to rotate around the fixed seat 61, further the oscillating rod 62 drives the pressing rod 63 to move, further the pressing rod 63 drives the pressing roller 64 to move on the surface of the back roller 51 (the pressing roller 64 moves between the closest distance between the coating roller 52 and the back roller 51 at the contact tangent point of the current collector and the back roller 51), because the spring 66 is arranged between the pressing rod 63 and the oscillating rod 62, the tension adjusting mechanism is tightly attached to enable the surface of the current collector 64 to be always on the surface of the current collector 51, and further the current collector to avoid the uniformity of the tension adjusting mechanism when the tension adjusting mechanism is not uniform when the tension adjusting mechanism, and the uniformity of the current collector 5 coated back roller 51 is ensured, and the uniformity of the back roller 51 is not to be reduced when the tension adjusting mechanism; meanwhile, the pressing roller 64 moves along with the movement of the tensioning mechanism 3, so that the pressure between the pressing wheel and the back roller 51 is relatively stable, the surface tension of the current collector is ensured to be greater than that of the coating solution, the slurry can be uniformly and flatly spread, the coating quality is improved, the quality of a battery grade piece is improved, and the quality of a lithium battery is improved; the compression roller 64 prevents the current collector from contacting the coating surface of the coating roller 52 when the tension of the current collector changes, so that the coating roller 52 is prevented from scratching the surface of the current collector coating slurry, and the quality of the battery grade sheet is ensured.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (7)

1. A new energy automobile lithium battery pole piece coating device comprises a supporting frame (1), an unreeling mechanism (2), a tensioning mechanism (3), a guide mechanism (4), a coating mechanism (5), a drying mechanism, a cold pressing mechanism and a reeling mechanism; the supporting frame (1) is fixedly connected to the ground; one end of the supporting frame (1) is provided with the unreeling mechanism (2); the unwinding mechanism (2) is used for unwinding the coiled current collector; the other end of the supporting frame (1) is provided with the winding mechanism; the rolling mechanism is used for rolling the compacted battery grade sheet;
the coating mechanism (5) is arranged behind the unwinding mechanism (2) and is used for coating slurry on the surface of the discharged current collector; the coating mechanism (5) comprises a back roll (51), a coating roll (52), a slurry scraper (53) and a slurry box (54); the support frame (1) is rotatably connected with the coating roller (52); the back roller (51) is arranged on one side of the coating roller (52); the other side of the coating roller (52) is provided with the slurry box (54); the slurry box (54) is fixedly connected to the support frame (1); the pulp scraper (53) is arranged above the coating roller (52);
the drying mechanism is arranged behind the coating mechanism (5) and is used for drying the current collector coated with the slurry;
the cold pressing mechanism is arranged behind the drying mechanism and used for compacting the dried battery grade sheet;
the winding mechanism is arranged behind the cold pressing mechanism and is used for winding the compacted battery grade sheet;
the tensioning mechanism (3) is arranged between the unreeling mechanism (2) and the coating mechanism (5); the tensioning mechanism (3) is used for controlling the tensioning force of the current collector in the discharging process;
the guide mechanism (4) is arranged between the unwinding mechanism (2) and the winding mechanism; the guide mechanism (4) comprises an uncoiling guide roller (41), a coating guide roller (42) and a coiling guide roller (43); an uncoiling guide roller (41) is arranged between the tensioning mechanism (3) and the uncoiling mechanism (2); the uncoiling guide roller (41) is rotationally connected to the supporting frame (1); a coating guide roller (42) is arranged between the tensioning mechanism (3) and the coating mechanism (5); the coating guide roller (42) is connected to the support frame (1); the coiling guide roller (43) is arranged between the coiling mechanism and the cold pressing mechanism; the winding guide roller (43) is rotationally connected to the support frame (1); the method is characterized in that: the pressing crease-resist mechanism (6) is also included; the pressing crease-resistance mechanism (6) comprises a fixed seat (61), a swing rod (62), a pressing rod (63), a pressing roller (64), a driving rod (65) and a spring (66); the pressure roller (64) is arranged below the coating roller (52) and the back roller (51) and is in contact with the back roller (51); the two ends of the rotating shaft of the pressing roller (64) are provided with the pressing rods (63); one end of the pressing rod (63) is rotatably connected to a rotating shaft of the pressing roller (64); the other end of the pressing rod (63) is provided with the swinging rod (62); the other end of the pressing rod (63) is rotatably connected to one end of the swinging rod (62); the other end of the swinging rod (62) is provided with the driving rod (65); one end of the driving rod (65) is rotatably connected to the other end of the swinging rod (62); the other end of the driving rod (65) is connected to the tensioning mechanism (3); the middle part of the swinging rod (62) is rotatably connected to the fixed seat (61); the fixed seat (61) is fixedly connected to a cross bar of the support frame (1); the spring (66) is arranged between one end of the swinging rod (62) close to the driving rod (65) and one end of the pressing rod (63) close to the pressing roller (64); two ends of the spring (66) are fixedly connected to the swing rod (62) and the pressing rod (63);
the tensioning mechanism (3) comprises a tensioning roller (31), a connecting rod (32), a rotating shaft (33), a supporting seat (34), a first worm wheel (35), a first worm (36) and a motor; the other end of the driving rod (65) is rotatably connected to a rotating shaft of the tension roller (31); the supporting seat (34) is fixedly connected to the ground; the supporting seat (34) is rotatably connected with the rotating shaft (33); the middle part of the rotating shaft (33) is fixedly connected with the first worm wheel (35); the first worm (36) is in meshed transmission with the first worm wheel (35); the first worm (36) is rotationally connected to the supporting seat (34); one end of the first worm (36) is fixedly connected to a rotating shaft of the motor; the mounting seat of the motor is fixedly connected to the supporting seat (34); the connecting rods (32) are arranged at two ends of the rotating shaft (33); one end of the connecting rod (32) is fixedly connected to the rotating shaft (33); the other end of the connecting rod (32) is rotatably connected to a rotating shaft of the tension roller (31); a flexible layer is arranged on the tooth surface of the first worm (36).
2. The new energy automobile lithium battery pole piece coating equipment of claim 1, characterized in that: two ends of a rotating shaft of the coating guide roller (42) are connected to a cross bar of the supporting frame (1) through a first electric push rod (7) and a second electric push rod (71) respectively; the cylinder bodies of the first electric push rod (7) and the second electric push rod (71) are fixedly connected to the supporting frame (1); a first connector at the end part of the extending end of the first electric push rod (7) is rotatably connected to a rotating shaft of the coating guide roller (42); a first pressure sensor (72) is arranged between the first connector and the guide rod of the first electric push rod (7); a second connector at the end part of the extending end of the second electric push rod (71) is rotatably connected to a rotating shaft of the coating guide roller (42); a second pressure sensor (73) is arranged between the second connector and a guide rod of the second electric push rod (71).
3. The new energy automobile lithium battery pole piece coating equipment of claim 2, characterized in that: a leveling scraper (55) is arranged above the back roll (51); flexible baffles (56) are arranged at two ends of a coating area formed among the back roll (51), the coating roll (52), the slurry scraper (53) and the leveling scraper (55); the flexible baffle (56) is fixedly connected to the support frame (1) through a support; the edge of the flexible baffle (56) contacting the back roller (51) and the coating roller (52) is provided with a channel; a compression rope (57) is arranged in the channel; two ends of the pressing rope (57) are respectively and fixedly connected to the side walls of the flexible baffle (56) close to the leveling scraper (55) and one side of the pulp scraper (53); the middle part of the pull rope of the pressing rope (57) is provided with a sheet pull rope (58); one end of the sheet pull rope (58) is fixedly connected to the pressing rope (57); the other end of the sheet-shaped pull rope (58) penetrates through the space between the back roller (51) and the coating roller (52) and then is connected to the fixed seat (61); the middle part of the sheet-shaped pull rope (58) is provided with an elastic rope (59).
4. The new energy automobile lithium battery pole piece coating equipment of claim 3, characterized in that: the leveling scraper (55) and the backing roll (51) are both connected to independent support columns (8); the back roll (51) is rotatably connected to the independent supporting columns (8), and anti-seismic treatment is performed between the ground surfaces of the independent supporting columns (8).
5. The new energy automobile lithium battery pole piece coating equipment of claim 4, characterized in that: the leveling scraper (55) is connected to the independent supporting column (8) through a fine adjustment mechanism; the fine adjustment mechanism comprises a sliding seat (81), a second worm wheel (82), a second worm (83) and a connecting shaft (84); the leveling scraper (55) is rotatably connected to the sliding seat (81); the sliding seat (81) is connected to the independent supporting column (8) in a sliding manner; the sliding seat (81) is symmetrically provided with the connecting shafts (84); one end of the connecting shaft (84) is rotatably connected to the cross bar of the independent supporting column (8); the other end of the connecting shaft (84) is provided with a thread structure; the other end of the connecting shaft (84) is in threaded connection with the sliding seat (81); one side, close to the cross bar of the independent supporting column (8), of the connecting shaft (84) is fixedly connected with the second worm wheel (82); the second worm wheel (82) is in meshed transmission with the second worm (83); the second worm (83) is rotatably connected to the cross bar of the independent supporting column (8).
6. The new energy automobile lithium battery pole piece coating equipment of claim 5, characterized in that: a turnover cover (541) is arranged on the slurry box (54); the turnover cover (541) can be turned over and opened; a sealing cover (561) is arranged above the space between the two flexible baffles (56); the sealing cover (561) is fixedly connected to the flexible baffle (56).
7. The new energy automobile lithium battery pole piece coating equipment of claim 6, characterized in that: a dustproof and soundproof cover (9) is arranged on the outer side of the supporting frame (1); the dustproof sound-proof shield (9) is fixedly connected to the supporting frame (1).
CN202210196507.3A 2022-03-02 2022-03-02 New energy automobile lithium battery pole piece coating equipment Active CN114558741B (en)

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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN115924583A (en) * 2022-11-11 2023-04-07 江西伟睿新能源有限公司 A lithium battery stacking process equipment
CN117000499B (en) * 2023-08-11 2024-06-11 中山市金田机电有限公司 Micro-concave coating mechanism
CN117583204B (en) * 2024-01-19 2024-04-30 河南易成阳光新能源有限公司 Preparation device and preparation method of ultralow-temperature battery

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2724856Y (en) * 2004-09-21 2005-09-14 江苏达胜热缩材料有限公司 Gluing device for thermal shrinkable sleeve
CN204453982U (en) * 2015-01-20 2015-07-08 嘉兴市兔皇羊绒有限公司 A kind of strap transmits wrap-up
CN107104223A (en) * 2017-06-12 2017-08-29 太原科技大学 Lithium battery pole slice manufactures integrated machine equipment
CN109499811A (en) * 2018-12-21 2019-03-22 江苏杰立胶粘材料科技有限公司 A kind of foam tape sizer with spin coating function
CN208912457U (en) * 2018-09-17 2019-05-31 东莞市诚嘉隆植绒制品有限公司 A cloth feeding device of a flocking machine
CN209940060U (en) * 2019-01-23 2020-01-14 麻城市阳光传媒印务有限公司 Film laminating mechanism for printing paper
CN210187558U (en) * 2019-05-31 2020-03-27 河北思诺装饰材料有限公司 Two-sided spreading machine of impregnated paper production
CN210187546U (en) * 2019-03-13 2020-03-27 芜湖天弋能源科技有限公司 Lithium ion battery substrate coating system
CN210646995U (en) * 2019-08-21 2020-06-02 江西九鼎动力新能源科技有限公司 Pole piece coating device for lithium battery processing
CN211463744U (en) * 2019-12-26 2020-09-11 信阳中原倚创新材料有限公司 Automatic adhesive tape production device
CN212468660U (en) * 2020-05-27 2021-02-05 湖北霖坤红塬地毯股份有限公司 Adjustable carpet gluing device
CN212468714U (en) * 2020-05-11 2021-02-05 江西省赢合科技有限公司 Coating oven capable of controlling coating thickness
CN212702584U (en) * 2020-06-24 2021-03-16 松阳县景顺实业有限公司 Energy-saving environment-friendly continuous surface anti-corrosion equipment for copper strips
CN213222983U (en) * 2020-08-25 2021-05-18 欧赛新能源科技股份有限公司 Tensioning assembly for coating lithium battery pole piece
CN213494601U (en) * 2020-09-23 2021-06-22 博罗县光明印刷有限公司 Coating machine for label
CN214347635U (en) * 2020-12-31 2021-10-08 广东京华新材料科技股份有限公司 Protection film coating machine unreels balanced adjustment mechanism of tension
CN214515704U (en) * 2021-04-29 2021-10-29 启东市固德防水布有限公司 Coating device for processing antistatic PVC (polyvinyl chloride) clamp mesh cloth
CN215163784U (en) * 2020-12-16 2021-12-14 苏州隆惠岭科技有限公司 Stable material collecting type cloth printing and dyeing equipment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5919517A (en) * 1993-05-05 1999-07-06 Aluminum Company Of America Method for coating a metal strip
WO1999055966A1 (en) * 1998-04-24 1999-11-04 Valmet Corporation Method and arrangement for coating a moving web
JP5801464B1 (en) * 2014-12-03 2015-10-28 株式会社日立パワーソリューションズ Roll press equipment
CN207719318U (en) * 2017-12-26 2018-08-10 安徽巡鹰新能源科技有限公司 A kind of lithium battery processing tension-isolation means
CN210546008U (en) * 2019-05-21 2020-05-19 深圳恒润达光电网印科技有限公司 Anti-counterfeiting film coating device
CN112076954A (en) * 2020-09-14 2020-12-15 浙江工业职业技术学院 A coating device for PVDF separator for lithium battery
CN214975269U (en) * 2021-05-17 2021-12-03 郑州中科新兴产业技术研究院 A roller blank transfer coating equipment

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2724856Y (en) * 2004-09-21 2005-09-14 江苏达胜热缩材料有限公司 Gluing device for thermal shrinkable sleeve
CN204453982U (en) * 2015-01-20 2015-07-08 嘉兴市兔皇羊绒有限公司 A kind of strap transmits wrap-up
CN107104223A (en) * 2017-06-12 2017-08-29 太原科技大学 Lithium battery pole slice manufactures integrated machine equipment
CN208912457U (en) * 2018-09-17 2019-05-31 东莞市诚嘉隆植绒制品有限公司 A cloth feeding device of a flocking machine
CN109499811A (en) * 2018-12-21 2019-03-22 江苏杰立胶粘材料科技有限公司 A kind of foam tape sizer with spin coating function
CN209940060U (en) * 2019-01-23 2020-01-14 麻城市阳光传媒印务有限公司 Film laminating mechanism for printing paper
CN210187546U (en) * 2019-03-13 2020-03-27 芜湖天弋能源科技有限公司 Lithium ion battery substrate coating system
CN210187558U (en) * 2019-05-31 2020-03-27 河北思诺装饰材料有限公司 Two-sided spreading machine of impregnated paper production
CN210646995U (en) * 2019-08-21 2020-06-02 江西九鼎动力新能源科技有限公司 Pole piece coating device for lithium battery processing
CN211463744U (en) * 2019-12-26 2020-09-11 信阳中原倚创新材料有限公司 Automatic adhesive tape production device
CN212468714U (en) * 2020-05-11 2021-02-05 江西省赢合科技有限公司 Coating oven capable of controlling coating thickness
CN212468660U (en) * 2020-05-27 2021-02-05 湖北霖坤红塬地毯股份有限公司 Adjustable carpet gluing device
CN212702584U (en) * 2020-06-24 2021-03-16 松阳县景顺实业有限公司 Energy-saving environment-friendly continuous surface anti-corrosion equipment for copper strips
CN213222983U (en) * 2020-08-25 2021-05-18 欧赛新能源科技股份有限公司 Tensioning assembly for coating lithium battery pole piece
CN213494601U (en) * 2020-09-23 2021-06-22 博罗县光明印刷有限公司 Coating machine for label
CN215163784U (en) * 2020-12-16 2021-12-14 苏州隆惠岭科技有限公司 Stable material collecting type cloth printing and dyeing equipment
CN214347635U (en) * 2020-12-31 2021-10-08 广东京华新材料科技股份有限公司 Protection film coating machine unreels balanced adjustment mechanism of tension
CN214515704U (en) * 2021-04-29 2021-10-29 启东市固德防水布有限公司 Coating device for processing antistatic PVC (polyvinyl chloride) clamp mesh cloth

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