CN111530694A - Battery sheet coating device - Google Patents

Battery sheet coating device Download PDF

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Publication number
CN111530694A
CN111530694A CN202010505586.2A CN202010505586A CN111530694A CN 111530694 A CN111530694 A CN 111530694A CN 202010505586 A CN202010505586 A CN 202010505586A CN 111530694 A CN111530694 A CN 111530694A
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CN
China
Prior art keywords
slurry
pole piece
coating
water
sides
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Pending
Application number
CN202010505586.2A
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Chinese (zh)
Inventor
赖伟峰
魏其秋
陈金炎
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Fujian Wei Dong New Energy LLC
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Fujian Wei Dong New Energy LLC
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Application filed by Fujian Wei Dong New Energy LLC filed Critical Fujian Wei Dong New Energy LLC
Priority to CN202010505586.2A priority Critical patent/CN111530694A/en
Publication of CN111530694A publication Critical patent/CN111530694A/en
Pending legal-status Critical Current

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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
    • B05C1/12—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 fed round the roller
    • 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
    • B05C1/003—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 incorporating means for heating or cooling the liquid or other fluent material
    • 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
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • 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
    • B05C11/04—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 with blades
    • B05C11/041—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 with blades characterised by means for positioning, loading, or deforming the blades
    • 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
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • 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
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work

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  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a battery pole piece coating device, which comprises a rack, wherein a slurry removing mechanism, a slurry scraping mechanism, a slurry tank and a positioning roller are sequentially arranged on the rack from top to bottom, the slurry removing mechanism comprises a suction head, a water outlet needle, a water tank and a suction box which are used for removing slurry on two sides of a pole piece and are respectively provided with two symmetrical groups, a fan is connected between the suction head and the suction box through a pipeline, a water suction pump is connected between the water outlet needle and the water tank through a pipeline, the water outlet needle and the suction head are both connected with the rack, the suction head is connected with a stop block, a group of coating rollers and coating rollers immersed in the slurry are sequentially and rotatably connected in the slurry tank from top to bottom, a rotary driving assembly detachably connected with the coating rollers and the coating rollers is arranged on one side of the rack, a through groove for the pole piece to pass through is arranged at the bottom end of the slurry tank, and a constant temperature water circulating device used; according to the invention, the pole pieces are automatically coated and evenly distributed, and residual slurry of slurry-free parts at two sides of the pole pieces is removed, so that the whole coating is even, the coating efficiency is high, and the quality of the coated pole pieces is good.

Description

Battery sheet coating device
Technical Field
The invention relates to the technical field of battery production, in particular to a battery pole piece coating device.
Background
The battery electrode is one of the most important parts in the battery composition, the cycle life and the charging and discharging performance of the battery are greatly influenced by the uniformity of the electrode, the thickness of the electrode determines the key factor of the battery capacity, the cycle life of the battery can be prolonged to a certain extent by the electrode with excellent performance, and the safety accidents of ignition, even explosion and the like of the battery can be caused by the electrode with uneven coating, the battery pole piece is generally coated by manually coating the battery pole piece in the traditional battery pole piece coating mode, the coating mode of the battery pole piece usually has the problems of low coating efficiency, uneven coating, single-side coating of the battery pole piece, complex operation and the like, the existing battery pole piece coating device can coat slurry on both sides of the pole piece material, but the property of the battery slurry is changed along with the change of temperature in the coating process, and the slurry is remained in the slurry-free parts on both sides of the pole piece, causing the problems of uneven slurry coating and poor quality of the coated pole pieces, thereby affecting the overall coating efficiency and the later use.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a battery pole piece coating device which has the advantages of uniform coating, high coating efficiency and good quality of coated pole pieces.
In order to achieve the purpose, the invention provides the following technical scheme:
a battery pole piece coating device comprises a rack, wherein a winding roller, a slurry removing mechanism, a slurry scraping mechanism, a slurry tank and a positioning roller for fixing a pole piece to be coated are sequentially installed on the rack from top to bottom, the slurry removing mechanism comprises a suction head, a water outlet needle, a water tank and a suction box, the suction head, the suction needle, the water tank and the positioning roller are used for removing slurry on two sides of the pole piece and are respectively provided with two groups of symmetrical suction heads, the suction box is connected with a fan through a pipeline, the water outlet needle is connected with a water suction pump through a pipeline between the water tank, the water outlet needle is connected with the suction head and is connected with the rack, the suction head is connected with a stop block, a group of coating rollers and a coating roller immersed in the slurry are sequentially and rotatably connected from top to bottom in the slurry tank, a rotary driving assembly detachably connected with the coating rollers is arranged on one side of the rack, the bottom end of the slurry tank is provided with a through groove for the, the slurry tank is connected with a constant-temperature water circulating device for keeping the slurry constant temperature.
Further setting: constant temperature water circle device includes temperature sensor, water circulating pipe and hot and cold water switch, temperature sensor install in the dressing trough, the water circulating pipe install in two inside walls of dressing trough, the water circulating pipeline input with the output intercommunication of hot and cold water switch, the water circulating pipeline output with the input intercommunication of hot and cold water switch, the hot and cold water switch is located frame one side, temperature sensor electric signal connection has external control ware, the hot and cold water switch with external control ware electric signal connection.
Further setting: the rotary driving component is connected with the stirring rollers, the stirring rollers are positioned on two sides of the coating rollers, which are back to back with each other
Further setting: and the two sides of the through groove are respectively connected with a sealing silica gel pad used for sealing the through groove.
Further setting: scrape pulp mechanism include fixing base, the scraper that a set of symmetry set up, scrape blade holder and first cylinder, the scraper can dismantle connect in scraper holder one side, scraper holder opposite side with the ejector pin of first cylinder is connected, constitute between the scraper with lead to the communicating thick liquid passageway of scraping of groove, it is connected with first slider to scrape the blade holder bottom, a fixing base terminal surface with the frame top is connected, another terminal surface of fixing base is connected with the confession first guide rail that first slider slided and connects, the fixing base seted up with lead to the communicating thick liquid hole of scraping of groove.
Further setting: the frame top erect a set of length with the parallel second guide rail of scraper length, the second guide rail slides and is connected with the connecting block, inhale the stub bar go out water needle from the top down in proper order can dismantle connect in the connecting block is kept away from one side of second guide rail, the second guide rail with be provided with the retaining member between the connecting block, the connecting block passes through the retaining member lock in the second guide rail.
Further setting: and one side of the connecting block is detachably connected with a barrier plate for preventing water from splashing to the electrode substrate part.
Further setting: the bottom of second guide rail is connected with the second slider, the frame top is connected with the confession the third guide rail that the second slider slided, third guide rail one side is connected with the drive the second slider is followed the length direction of scraper removes the second cylinder.
Further setting: the roller type automatic feeding machine is characterized in that the bottom end of the rack is connected with rollers, the bottom end of the rack is provided with a base, three sides of the base are connected with limit blocks for limiting the positions of the three sides of the rack, the base is provided with a third air cylinder, an ejector rod of the third air cylinder is connected with a support plate, the bottom end of the support plate is connected with a guide pillar, the bottom end of the rack is provided with a positioning groove for placing one end of the guide pillar, and the base is connected with a linear.
Further setting: the coating steps are as follows:
firstly, pole piece materials on the positioning roller enter between the coating rollers through the through grooves, and the coating rollers rotate to dip slurry and coat two sides of the pole piece materials; the heat exchange is carried out on the slurry in the slurry tank through a constant-temperature water circulation device, so that the stability of the property of the slurry is ensured;
secondly, the pole piece material coated with the slurry enters a space between the coating rollers through the winding roller, the coating rollers rotate and extrude the two surfaces of the pole piece to level the slurry on the protruding parts of the two surfaces of the pole piece, and the slurry coating on the two surfaces of the pole piece material is ensured to be more uniform;
thirdly, scraping redundant slurry on the surface of the pole piece by the evenly pressed pole piece material through the slurry scraping mechanism;
fourthly, the evenly-scraped pole pieces are firstly placed between the material suction heads, two sides of the pole pieces are fixed by the stop blocks, and slurry left in the slurry-free parts on the two sides of the pole pieces is adsorbed into the material suction box through the fan; and then, pumping water in the water tank into a water outlet needle by a water pump to be sprayed out, and completely removing the residual slurry on the slurry-free parts at the two sides of the pole piece.
In conclusion, the pole piece coating and winding device has the advantages that the winding roller and the positioning roller play a role in ensuring the smoothness of the pole piece in the subsequent coating and winding process; the function of automatically coating slurry on two sides of the pole piece material is realized through the slurry tank, the through groove, the coating roller and the rotary driving assembly; the coating roller and the rotary driving component are used for leveling the protruding part of the slurry on the two surfaces of the pole piece by utilizing the pressure generated by the coating roller on the two surfaces of the pole piece, so that the effect of primarily uniformly pressing the slurry on the two surfaces of the pole piece material is realized; redundant slurry on the surface of the pole piece is scraped by the slurry scraping mechanism, so that the effects of further ensuring that the coated surface of the pole piece material is smoother and the slurry is distributed more uniformly are realized; the residual sizing agent of the non-sizing parts at the two sides of the pole piece is absorbed into the material absorption box through the fan and the material absorption head, so that the effect of primarily removing the non-sizing parts at the two sides of the pole piece is realized; the effect of secondary cleaning of the slurry-free parts on the two sides of the pole piece is realized through the water suction pump and the water outlet needle; in addition, the baffle block plays a role in preventing the suction head from sucking the slurry of the electrode plate base body part into the suction box in the process of sucking the residual slurry by the suction head, and simultaneously prevents the battery electrode plate from wrinkling due to displacement deviation, thereby ensuring the coating quality of the battery electrode plate; the stability of the property of the slurry is ensured by a constant-temperature water circulation device; the invention has the advantages of uniform overall coating, high coating efficiency and good quality of the coated pole piece.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a partial cross-sectional view of an embodiment of the invention:
FIG. 4 is a partial structural schematic diagram of an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base and a supporting plate according to an embodiment of the invention.
In the figure: 1. a frame; 2. a wind-up roll; 3. a slurry removing mechanism; 4. a pulp scraping mechanism; 5. a slurry tank; 6. a positioning roller; 7. a suction head; 8. water outlet needle; 9. a water tank; 10. a material suction box; 11. a fan; 12. a water pump; 13. a stopper; 14. coating a roller uniformly; 15. a coating roller; 16. a rotary drive assembly; 17. a through groove; 18. a constant temperature water circulation device; 19. a temperature sensor; 20. a water circulation pipe; 21. a cold and hot water exchanger; 22. a stirring roller; 23. a blocking plate; 24. sealing the silica gel pad; 25. a fixed seat; 26. a scraper; 27. a scraper seat; 28. a first cylinder; 29. a pulp scraping channel; 30. a first slider; 31. a first guide rail; 32. scraping a pulp hole; 33. a second guide rail; 34. connecting blocks; 35. a locking member; 36. a second slider; 37. a third guide rail; 38. a second cylinder; 39. a roller; 40. a base; 41. a limiting block; 42. a third cylinder; 43. a support plate; 44. a guide post; 45. positioning a groove; 46. and a linear ball guide sleeve.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments. It should be noted that the terms "upper" and "lower" used in the following description refer to directions in fig. 1 and 3, and the terms "bottom end" and "top end" refer to directions toward the geometric center of a particular component.
The most key concept of the invention is as follows: the winding roller 2 and the positioning roller 6 are used for primarily positioning the pole piece material, so that the flatness of the pole piece in the subsequent coating and winding process is ensured; the slurry is automatically coated on two sides of the pole piece material through the slurry tank 5, the through groove 17, the coating roller 15 and the rotary driving component 16; through the coating roller 14 and the rotary driving component 16, the rotary driving component 16 drives the coating roller 14 to rotate, the pressure generated by the coating roller 14 on the two surfaces of the pole piece levels the protruding part of the slurry on the two surfaces of the pole piece, so that the slurry on the two surfaces of the pole piece is automatically and uniformly pressed, and the slurry coating on the two surfaces of the pole piece material is more uniform; the redundant slurry on the surface of the pole piece is scraped by the slurry scraping mechanism 4, so that the effects of further ensuring that the coating surface of the pole piece material is smoother and the slurry is more uniformly distributed are realized, and meanwhile, the scraped slurry can fall into the slurry tank 5, so that the waste of the slurry is reduced; the residual sizing agent of the non-sizing parts at the two sides of the pole piece is absorbed into the material absorption box 10 through the fan 11 and the material absorption head 7, so that the effect of primarily removing the non-sizing parts at the two sides of the pole piece is realized; residual slurry points on the slurry-free parts on the two sides of the pole piece are cleaned and fastened through a water suction pump 12 and a water outlet needle 8, so that the slurry-free parts on the two sides of the pole piece are cleaned for the second time;
in addition, the baffle block 13 has the function of preventing the slurry of the pole piece substrate part from being sucked into the material sucking box 10 by the material sucking head 7, and meanwhile, the rolling precision of the pole piece is ensured, and the problems of displacement deviation and wrinkling of the battery pole piece are avoided; the stability of the property of the slurry is ensured by a constant-temperature water circulation device 18; the invention automatically coats two surfaces of the pole piece substrate at the same time, thereby avoiding the continuous change of the surface tension of the pole piece material during single-surface coating and influencing the coating uniformity; the whole coating is uniform, the coating efficiency is high, and the quality of the coated pole piece is good.
Referring to fig. 1 to 5, a battery pole piece coating device comprises a frame 1, wherein a wind-up roll 2, a slurry removing mechanism 3, a slurry scraping mechanism 4, a slurry tank 5 and a positioning roll 6 for fixing a pole piece to be coated are sequentially arranged on the frame 1 from top to bottom, the slurry removing mechanism 3 comprises a suction head 7, a water outlet needle 8, a water tank 9 and a suction tank 10 which are used for removing slurry on two sides of the pole piece and are respectively provided with two symmetrical groups, a pipeline between the suction head 7 and the suction tank 10 is connected with a fan 11, a pipeline between the water outlet needle 8 and the water tank 9 is connected with a water suction pump 12, the water outlet needle 8 and the suction head 7 are respectively connected with the frame 1, the suction head 7 is connected with a stop dog 13, a group of uniform coating roll 14 and a coating roll 15 immersed in the slurry tank 5 are sequentially and are respectively arranged from top to bottom, a rotary driving assembly 16 detachably connected with the uniform coating roll 14 and the coating roll 15 is arranged on one side of the frame 1, the bottom end of the stock trough 5 is provided with a through groove 17 for the pole piece to pass through, and the stock trough 5 is connected with a constant temperature water circulating device 18 for keeping the slurry constant temperature.
From the above description, the winding roller 2 and the positioning roller 6 are used for primarily positioning the pole piece material, so that the flatness of the pole piece in the subsequent coating and winding process is ensured; pole piece materials discharged by the positioning roller 6 firstly enter between the coating rollers 15 through a through groove 17 formed in the bottom end of the slurry groove 5, the group of coating rollers 15 immersed in the slurry are driven to rotate through the rotary driving assembly 16, the coating rollers 15 dip the slurry and coat two sides of a base part of the pole piece materials, and the function of automatically coating the slurry on the two sides of the pole piece materials is realized; then, the pole piece material coated with the slurry enters between the coating rollers 14 through the winding roller 2, the rotary driving assembly 16 drives the coating rollers 14 to rotate, and the slurry on the two surfaces of the pole piece protruding out is leveled by the pressure generated on the two surfaces of the pole piece by the coating rollers 14, so that the slurry on the two surfaces of the pole piece material is automatically pressed uniformly in an initial step, and the slurry coating on the two surfaces of the pole piece material is more uniform;
then, the pole piece material after being preliminarily pressed uniformly scrapes redundant slurry on the surface of the pole piece through the slurry scraping mechanism 4, so that the effects of further ensuring the more smooth coating surface of the pole piece material and more uniform slurry distribution are realized, and meanwhile, the scraped slurry can fall into the slurry tank 5, so that the waste of the slurry is reduced; the evenly-scraped pole piece enters a slurry removing mechanism 3, and slurry remained in slurry-free parts on two sides of the pole piece is adsorbed into a material sucking box 10 through a fan 11 and a material sucking head 7, so that the effect of primarily removing the slurry-free parts on two sides of the pole piece is realized;
finally, through a water suction pump 12 and a water outlet needle 8, residual slurry points on the slurry-free parts on the two sides of the pole piece are cleaned and fastened, and further the effect of secondary cleaning of the slurry-free parts on the two sides of the pole piece is achieved; further realizing high coating efficiency, uniform coating and good quality of the coated pole piece; in addition, the baffle 13 connected with the material suction head 7 plays a role in preventing the material suction head 7 from sucking the slurry of the electrode sheet base part into the material suction box 10 in the process of sucking the residual slurry by the material suction head 7, and meanwhile, the winding precision of the electrode sheet can be ensured, the displacement deviation of the battery electrode sheet is avoided, the wrinkling problem of the battery electrode sheet is further avoided, and the coating quality of the battery electrode sheet is ensured; the stability of the property of the slurry is ensured by a constant-temperature water circulation device 18; the invention automatically coats two surfaces of the pole piece substrate at the same time, thereby avoiding the continuous change of the surface tension of the pole piece material during single-surface coating and influencing the coating uniformity; the whole coating efficiency is high, the coating is uniform, and the quality of the coated pole piece is good.
Further: the constant-temperature water circulating device 18 comprises a temperature sensor 19, a water circulating pipe 20 and a cold and hot water exchanger 21, wherein the temperature sensor 19 is installed in the stock chest 5, the water circulating pipe 20 is installed on two inner side walls of the stock chest 5, the input end of the water circulating pipe 20 is communicated with the output end of the cold and hot water exchanger 21, the output end of the water circulating pipe 20 is communicated with the input end of the cold and hot water exchanger 21, the cold and hot water exchanger 21 is located on one side of the rack 1, the temperature sensor 19 is in electric signal connection with an external controller, and the cold.
As can be seen from the above description, when the temperature sensor 19 installed in the size tank 5 detects that the temperature in the size tank 5 reaches the preset lowest value, the external controller controls the hot and cold water exchanger 21 to heat until reaching the preset temperature value, the output end of the hot and cold water exchanger 21 outputs hot water to enter the water circulation pipe 20 through the input ends of the water circulation pipes 20 installed on the two inner side walls of the size tank 5, and the heat exchange is performed between the water circulation pipe 20 and the size in the size tank 5, so that the size is always maintained at a constant temperature state, the heating of the size in the size tank 5 is realized, and the effect of keeping the temperature of the size constant is ensured; when the temperature detected by the temperature sensor 19 is higher than a preset value, cold water is output from the output end in the cold and hot water exchanger 21, enters the water circulating pipe 20 through the input end of the water circulating pipe 20, and exchanges heat with the slurry in the slurry tank 5 through the water circulating pipe 20, so that the slurry in the slurry tank 5 is cooled; because the temperature of the circulating water is always kept in a constant range, the slurry which exchanges heat with the water circulating pipe 20 is always kept in a constant temperature state, and the effects of ensuring the stability of the property of the slurry and ensuring the quality of the pole piece after the subsequent coating is finished are further realized.
Further: the stirring rollers 22 are rotatably connected in the slurry tank 5, the rotary driving assembly 16 is connected with the stirring rollers 22, and the stirring rollers 22 are positioned on two opposite sides between the coating rollers 15.
From the above description, the rotation driving assembly 16 drives the stirring roller 22 to rotate, so that the slurry in the slurry tank 5 is automatically stirred, the stability of the slurry is ensured, and the effects of further improving the coating uniformity of the subsequent battery pole piece and improving the quality of the coated battery pole piece are achieved.
Further: and two sides of the through groove 17 are respectively connected with a sealing silica gel pad 24 for sealing the through groove 17.
From the above description, it can be known that the sealing silica gel pads 24 connected to both sides of the through groove 17 prevent the slurry from falling from the slurry groove 5 through the through groove 17 in the slurry scraping and coating processes, and reduce the waste of the slurry.
Further: scrape pulp mechanism 4 and include fixing base 25, the scraper 26 that a set of symmetry set up, scraper seat 27 and first cylinder 28, scraper 26 can be dismantled to be connected in scraper seat 27 one side, the ejector pin of scraper seat 27 opposite side and first cylinder 28 is connected, constitute between the scraper 26 and lead to the communicating thick liquid passageway 29 of scraping of groove 17, scraper seat 27 bottom is connected with first slider 30, a fixing base 25 terminal surface is connected with 1 top of frame, another terminal surface of fixing base 25 is connected with the first guide rail 31 that supplies first slider 30 to slide and connect, fixing base 25 seted up with lead to the communicating thick liquid hole 32 of scraping of groove 17.
As can be seen from the above description, when the slurry adhered to the surface of the pole piece material is excessive, the first cylinder 28 is started, the ejector rod of the first cylinder 28 pushes the other side of the scraper base 27 to move along the width direction of the scraper 26, so as to drive the scraper 26 to slide on the first guide rail 31 through the first slider 30, and thus drive the scraper 26 to move along the width direction of the scraper 26, so as to adjust the distance between the scrapers 26, further achieve the effect of automatically adjusting the width of the slurry scraping channel 29, and improve the coating efficiency of the subsequent pole piece; the pole piece material after the completion of coating passes through the thick liquid passageway 29 of scraping that gets into scraper 26 constitution after scraping thick liquid hole 32 in the dressing trough 5, a set of scraper 26 through the symmetry setting produces the pressure of suitable size to the pole piece, stimulate the battery pole piece gently, strike off the unnecessary thick liquids in pole piece surface in order to realize, and then realize guaranteeing the pole piece coating even and the quality effect of the pole piece after the coating, in addition, can dismantle with scraper seat 27 through scraper 26 and be connected, play the effect of the maintenance of the follow-up scraper 26 of being convenient for.
Further: the top end of the frame 1 is provided with a set of second guide rails 33 with the length parallel to the length of the scraper 26, the second guide rails 33 are connected with a connecting block 34 in a sliding manner, the suction head 7 and the water outlet needle 8 are sequentially detachably connected to one side of the connecting block 34 far away from the second guide rails 33 from top to bottom, locking parts 35 are arranged between the second guide rails 33 and the connecting block 34, and the connecting block 34 is locked on the second guide rails 33 through the locking parts 35.
From the above description, when pole piece materials with different widths need to be coated, the locking member 35 is opened, the connecting block 34 is pushed to slide in the length direction of the second guide rail 33, the suction head 7 and the water outlet needle 8 are driven to move to the non-slurry parts on the two sides of the pole piece materials along the length direction of the scraper 26, the connecting block 34 is locked on the second guide rail 33 again through the locking member 35, the effects of directionally moving, adjusting and locking the suction head 7 and the water outlet needle 8 along the length direction of the scraper 26 are realized, the precision of cleaning the non-slurry parts on the two sides of the pole piece materials is further improved, and the quality of the coated pole piece is ensured.
Further: a blocking plate 23 for preventing water from splashing to the electrode base body portion is detachably attached to one side of the connecting block 34.
From the above description, through connecting in the baffle 23 of connecting block 34 one side can be dismantled, prevent that water from spattering to the pole piece base member part and causing the base member part surface coating of battery pole piece material inhomogeneous at the abluent in-process of the no thick liquid portion of play water needle 8 to pole piece material both sides, guarantee the pole piece quality after the coating, improved the abluent precision of the no thick liquid portion of pole piece material both sides, realize improving coating efficiency and guarantee the even effect of coating.
Further: the bottom end of the second guide rail 33 is connected with a second sliding block 36, the top end of the frame 1 is connected with a third guide rail 37 for the second sliding block 36 to slide, and one side of the third guide rail 37 is connected with a second air cylinder 38 for driving the second sliding block 36 to move along the length direction of the scraper 26.
From the above description, when the scraper 26 needs to be cleaned, the second cylinder 38 connected to one side of the third guide rail 37 drives the second slider 36 to reciprocate along the length direction of the scraper 26, so as to drive the second guide rail 33 and the slurry removing mechanism 3 to reciprocate along the length direction of the scraper 26, thereby realizing the automatic reciprocating cleaning effect on the scraper 26, and avoiding the influence on the subsequent scraping effect due to the residual slurry of the scraper 26, and further influencing the coating efficiency and the coating quality of the subsequent pole piece.
Further: the bottom end of the frame 1 is connected with a roller 39, the bottom end of the frame 1 is provided with a base 40, three sides of the base 40 are connected with limiting blocks 41 for limiting the positions of the three sides of the frame 1, a third air cylinder 42 is installed on the base 40, an ejector rod of the third air cylinder 42 is connected with a supporting plate 43, the bottom end of the supporting plate 43 is connected with a guide pillar 44, a positioning groove 45 for placing one end of the guide pillar 44 is formed in the bottom end of the frame 1, and the base 40 is connected with a linear.
As can be seen from the above description, the roller 39 connected to the bottom end of the frame 1 is convenient for pushing the battery pole piece coating device after subsequent maintenance and cleaning onto the base 40; the rack 1 arranged on the base 40 is prevented from shaking by the limiting blocks 41 connected to the three sides of the base 40, so that the rack 1 is initially positioned on the base 40; pushing the rack 1 until one end of the guide post 44 is arranged in the positioning groove 45, so as to realize the function of secondarily positioning the rack 1 on the base 40; before the pole piece material is required to be coated, the ejector rod of the third air cylinder 42 arranged on the base 40 extends to further push the supporting plate 43 to support the bottom end of the machine frame 1 to ascend along the length direction of the linear ball guide sleeve 46 until the rotary driving assembly 16 is connected with the coating roller 14 and the coating roller 15, so that the effect that the machine frame 1 is prevented from moving to influence the subsequent coating efficiency and the quality of the coated pole piece is avoided.
Referring to fig. 1 to 5, an embodiment of the present invention is:
a battery pole piece coating device is shown in figures 1 and 3 and comprises a rack 1, wherein a winding roller 2, a pulp removing mechanism 3, a pulp scraping mechanism 4, a pulp groove 5 and a positioning roller 6 for fixing a pole piece to be coated are sequentially arranged on the rack 1 from top to bottom; the slurry tank 5 is connected with a constant temperature water circulation device 18 for keeping the slurry at a constant temperature.
As shown in fig. 1 and 2, the slurry removing mechanism 3 includes two symmetrical groups of suction heads 7, water outlet needles 8, a water tank 9 and a suction box 10 for removing slurry on both sides of the pole piece, and a blower (not shown in the figure, as in the whole text) is connected between the suction heads 7 and the suction box 10; a water pump (not shown in the figure, the whole text is the same) is connected between the water outlet needle 8 and the water tank 9 through a pipeline, and the water outlet needle 8 and the suction head 7 are both connected with the frame 1; the suction head 7 is connected with a stop block 13;
as shown in fig. 1 and 3, a group of coating rollers 14 and a group of coating rollers 15 immersed in the slurry are rotatably connected in the slurry tank 5 from top to bottom; a rotary driving component 16 is arranged on one side of the frame 1, and the coating roller 14 and the coating roller 15 are detachably connected with the rotary driving component 16; the bottom end of the slurry tank 5 is provided with a through groove 17 for the pole piece to pass through, and two sides of the through groove 17 are respectively connected with a sealing silica gel pad 24 for sealing the through groove 17; the stirring roller 22 is rotationally connected in the slurry tank 5, and the rotary driving component 16 is connected with the stirring roller 22; the rotary driving assembly 16 of this embodiment employs a rotary motor, and other driving members capable of driving the coating roller 14, the coating roller 15 and the stirring roller 22 to rotate may be used, and the stirring roller 22 is located on two opposite sides between the coating rollers 15.
As shown in fig. 3, the constant temperature water circulation device 18 includes a temperature sensor 19, a water circulation pipe 20, and a cold and hot water exchanger 21; the temperature sensors 19 are arranged in the stock tank 5, and the water circulating pipes 20 are arranged on two inner side walls of the stock tank 5; the input ends of the water circulating pipes 20 are communicated with the output end of a cold and hot water exchanger 21, the output ends of the water circulating pipes 20 are communicated with the input end of the cold and hot water exchanger 21, and the cold and hot water exchanger 21 is positioned at one side of the rack 1; the temperature sensor 19 is electrically connected to an external controller (not shown in the drawings, as it is, and the same goes for all), and the hot and cold water exchanger 21 is electrically connected to the external controller.
As shown in fig. 3 and 4, the slurry scraping mechanism 4 includes a fixed base 25, a set of symmetrically arranged scrapers 26, a scraper base 27 and a first cylinder 28; the scrapers 26 are detachably connected to one side of the scraper seat 27, and a pulp scraping channel 29 communicated with the through groove 17 is formed between the scrapers 26; the other side of the scraper seat 27 is connected with the ejector rod of the first air cylinder 28, the bottom end of the scraper seat 27 is connected with a first sliding block 30, one end face of the fixed seat 25 is connected with the top end of the rack 1, the other end face of the fixed seat 25 is connected with a first guide rail 31 for the sliding connection of the first sliding block 30, and the fixed seat 25 is provided with a slurry scraping hole 32 communicated with the through groove 17.
As shown in fig. 2 and 4, the top end of the frame 1 is provided with a set of second guide rails 33 with the length parallel to the length of the scraper 26, and the second guide rails 33 are connected with a connecting block 34 in a sliding manner; the suction head 7 and the water outlet needle 8 are sequentially detachably connected to one side of the connecting block 34 away from the second guide rail 33 from top to bottom; a locking piece 35 is arranged between the second guide rail 33 and the connecting block 34, the locking piece 35 adopts bolts, and other structures capable of locking the connecting block 34 and the second guide rail 33 are available;
as shown in fig. 3 and 4, the connecting block 34 is locked to the second rail 33 by a locking member 35; a blocking plate 23 for preventing water from splashing to the electrode substrate part is detachably connected to one side of the connecting block 34; the bottom end of the second guide rail 33 is connected with a second slider 36.
As shown in fig. 3 and 4, the top end of the frame 1 is connected with a third guide rail 37 for the second slider 36 to slide, and one side of the third guide rail 37 is connected with a second air cylinder 38 for driving the second slider 36 to move along the length direction of the scraper 26;
as shown in fig. 3 and 5, the bottom end of the frame 1 is connected with a roller 39, the bottom end of the frame 1 is provided with a base 40, and three sides of the base 40 are connected with limit blocks 41 for limiting the positions of three sides of the frame 1; the base 40 is provided with a third cylinder 42, the top rod of the third cylinder 42 is connected with a support plate 43, the bottom end of the support plate 43 is connected with a guide pillar 44, the bottom end of the frame 1 is provided with a positioning groove 12 for placing one end of the guide pillar 44, and the base 40 is connected with a linear ball guide sleeve 11 for sliding the other end of the guide pillar 44.
In conclusion, compared with the prior art, the coating device has the advantages of uniform coating, high coating efficiency and good quality of the coated pole piece, and plays a role in primary positioning of the pole piece material through the winding roller 2 and the positioning roller 6, thereby ensuring the smoothness of the pole piece in the subsequent coating and winding process; the slurry is automatically coated on two sides of the pole piece material through the slurry tank 5, the through groove 17, the coating roller 15 and the rotary driving component 16; the coating roller 14 and the rotary driving component 16 are used for leveling the protruding part of the slurry on the two surfaces of the pole piece by utilizing the pressure generated by the coating roller 14 on the two surfaces of the pole piece, so that the effect of automatically primarily pressing the slurry on the two surfaces of the pole piece is realized; the redundant slurry on the surface of the pole piece is scraped by the slurry scraping mechanism 4, so that the effects of further ensuring that the coated surface of the pole piece material is smoother and the slurry is distributed more uniformly are realized; the residual sizing agent of the non-sizing parts at the two sides of the pole piece is absorbed into the material absorption box 10 through the fan 11 and the material absorption head 7, so that the effect of primarily removing the non-sizing parts at the two sides of the pole piece is realized; the suction pump 12 and the water outlet needle 8 are used for achieving the effect of secondary cleaning of the slurry-free parts on the two sides of the pole piece; in addition, the baffle 13 has the function of preventing the suction head 7 from sucking the slurry of the electrode piece substrate part into the suction box 10 in the process of sucking the residual slurry by the suction head 7, and simultaneously, the problem of wrinkling caused by displacement deviation of the battery electrode piece is avoided, so that the coating quality of the battery electrode piece is ensured; the stability of the slurry properties is ensured by the constant temperature water circulation device 18.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (10)

1. The utility model provides a battery pole piece coating device which characterized in that: comprises a frame, wherein the frame is sequentially provided with a wind-up roll, a slurry removing mechanism, a slurry scraping mechanism, a slurry tank and a positioning roll for fixing a pole piece to be coated with slurry from top to bottom, the slurry removing mechanism comprises two symmetrical groups of suction heads, water outlet needles, a water tank and a suction box which are used for removing slurry on two sides of the pole piece, a fan is connected between the material suction head and the material suction box through a pipeline, a water suction pump is connected between the water outlet needle and the water tank through a pipeline, the water outlet needle and the material suction head are both connected with the frame, the material suction head is connected with a stop block, the slurry tank is connected with and provided with a group of coating rollers and a group of coating rollers immersed in the slurry in sequence from top to bottom, one side of the frame is provided with a rotary driving component which is detachably connected with the coating roller and the even coating roller, the pole piece feeding device is characterized in that a through groove for the pole piece to penetrate through is formed in the bottom end of the slurry groove, and the slurry groove is connected with a constant-temperature water circulating device for keeping the slurry constant in temperature.
2. The battery pole piece coating device of claim 1, wherein: constant temperature water circle device includes temperature sensor, water circulating pipe and hot and cold water switch, temperature sensor install in the dressing trough, the water circulating pipe install in two inside walls of dressing trough, the water circulating pipeline input with the output intercommunication of hot and cold water switch, the water circulating pipeline output with the input intercommunication of hot and cold water switch, the hot and cold water switch is located frame one side, temperature sensor electric signal connection has external control ware, the hot and cold water switch with external control ware electric signal connection.
3. The battery pole piece coating device of claim 1, wherein: the rotary driving assembly is connected with the stirring rollers, and the stirring rollers are located on two sides of the coating roller, which are opposite to each other.
4. The battery pole piece coating device of claim 1, wherein: and the two sides of the through groove are respectively connected with a sealing silica gel pad used for sealing the through groove.
5. The battery pole piece coating device of claim 1, wherein: scrape pulp mechanism include fixing base, the scraper that a set of symmetry set up, scrape blade holder and first cylinder, the scraper can dismantle connect in scraper holder one side, scraper holder opposite side with the ejector pin of first cylinder is connected, constitute between the scraper with lead to the communicating thick liquid passageway of scraping of groove, it is connected with first slider to scrape the blade holder bottom, a fixing base terminal surface with the frame top is connected, another terminal surface of fixing base is connected with the confession first guide rail that first slider slided and connects, the fixing base seted up with lead to the communicating thick liquid hole of scraping of groove.
6. The battery pole piece coating device of claim 5, wherein: the frame top erect a set of length with the parallel second guide rail of scraper length, the second guide rail slides and is connected with the connecting block, inhale the stub bar go out water needle from the top down in proper order can dismantle connect in the connecting block is kept away from one side of second guide rail, the second guide rail with be provided with the retaining member between the connecting block, the connecting block passes through the retaining member lock in the second guide rail.
7. The battery pole piece coating device of claim 6, wherein: and one side of the connecting block is detachably connected with a barrier plate for preventing water from splashing to the electrode substrate part.
8. The battery pole piece coating device of claim 6, wherein: the bottom of second guide rail is connected with the second slider, the frame top is connected with the confession the third guide rail that the second slider slided, third guide rail one side is connected with the drive the second slider is followed the length direction of scraper removes the second cylinder.
9. The battery pole piece coating device of claim 1, wherein: the roller type automatic feeding machine is characterized in that the bottom end of the rack is connected with rollers, the bottom end of the rack is provided with a base, three sides of the base are connected with limit blocks for limiting the positions of the three sides of the rack, the base is provided with a third air cylinder, an ejector rod of the third air cylinder is connected with a support plate, the bottom end of the support plate is connected with a guide pillar, the bottom end of the rack is provided with a positioning groove for placing one end of the guide pillar, and the base is connected with a linear.
10. The battery pole piece coating device of claim 1, wherein: the coating steps are as follows:
firstly, pole piece materials on the positioning roller enter between the coating rollers through the through grooves, and the coating rollers rotate to dip slurry and coat two sides of the pole piece materials; the heat exchange is carried out on the slurry in the slurry tank through a constant-temperature water circulation device, so that the stability of the property of the slurry is ensured;
secondly, the pole piece material coated with the slurry enters a space between the coating rollers through the winding roller, the coating rollers rotate and extrude the two surfaces of the pole piece to level the slurry on the protruding parts of the two surfaces of the pole piece, and the slurry coating on the two surfaces of the pole piece material is ensured to be more uniform;
thirdly, scraping redundant slurry on the surface of the pole piece by the evenly pressed pole piece material through the slurry scraping mechanism;
fourthly, the evenly-scraped pole pieces are firstly placed between the material suction heads, two sides of the pole pieces are fixed by the stop blocks, and slurry left in the slurry-free parts on the two sides of the pole pieces is adsorbed into the material suction box through the fan; and then, pumping water in the water tank into a water outlet needle by a water pump to be sprayed out, and completely removing the residual slurry on the slurry-free parts at the two sides of the pole piece.
CN202010505586.2A 2020-06-05 2020-06-05 Battery sheet coating device Pending CN111530694A (en)

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CN113333230A (en) * 2021-06-03 2021-09-03 深圳市曼恩斯特科技股份有限公司 Dry coating conveying rolling equipment
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