CN220652041U - Dry electrode calendaring pole piece composite continuous production equipment - Google Patents
Dry electrode calendaring pole piece composite continuous production equipment Download PDFInfo
- Publication number
- CN220652041U CN220652041U CN202322166929.9U CN202322166929U CN220652041U CN 220652041 U CN220652041 U CN 220652041U CN 202322166929 U CN202322166929 U CN 202322166929U CN 220652041 U CN220652041 U CN 220652041U
- Authority
- CN
- China
- Prior art keywords
- pole piece
- blank
- roller set
- continuous production
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003490 calendering Methods 0.000 title claims abstract description 53
- 239000002131 composite material Substances 0.000 title claims abstract description 47
- 238000010924 continuous production Methods 0.000 title claims abstract description 47
- 239000012528 membrane Substances 0.000 claims abstract description 106
- 238000001816 cooling Methods 0.000 claims description 54
- 238000007493 shaping process Methods 0.000 claims description 40
- 230000007246 mechanism Effects 0.000 claims description 37
- 238000009966 trimming Methods 0.000 claims description 35
- 239000000758 substrate Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000005461 lubrication Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 11
- 238000009504 vacuum film coating Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 15
- 150000001875 compounds Chemical class 0.000 abstract description 14
- 238000001771 vacuum deposition Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 27
- 230000008569 process Effects 0.000 description 24
- 239000007888 film coating Substances 0.000 description 13
- 238000009501 film coating Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000012257 stirred material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to the technical field of battery pole piece production equipment, and discloses dry electrode calendaring forming pole piece compound continuous production equipment. The dry electrode calendaring forming pole piece composite continuous production equipment is provided with a positive electrode membrane forming system, a negative electrode membrane forming system and a pole piece composite forming system. When the dry electrode calendaring forming pole piece composite continuous production equipment is adopted to carry out continuous production of the battery pole piece, the positive electrode membrane forming system and the negative electrode membrane forming system can be used for respectively forming the positive electrode membrane and the negative electrode membrane, and then the pole piece composite forming system is used for vacuum coating the formed positive electrode membrane and negative electrode membrane on the unreeled base material, so that the continuous production of the pole piece is realized, the dry electrode membrane and the battery pole piece can be produced and prepared on line at one time, the production efficiency is high, the cost is low, and the quality stability of the produced battery pole piece is high.
Description
Technical Field
The utility model relates to the technical field of battery pole piece production equipment, in particular to dry electrode calendaring forming pole piece compound continuous production equipment.
Background
The existing electrode preparation method mainly comprises the steps of wet coating, mixing electrode materials with conductive, adhesive and other materials according to a proportion to form slurry, coating the slurry on the surface of a current collector, and drying and forming the slurry. In addition, some dry electrode preparation methods are researched, but the preparation method is that electrode films are prepared independently, and after the electrode films are taken off line, the electrode films are unreeled, aligned, compounded, detected and the like with current collector base materials, so that the production process is more, the production efficiency is low, the cost is high due to more sequence conversion, and the influence of the intermediate process on the product quality is large.
Disclosure of Invention
The utility model aims to solve the problems of high energy consumption, low efficiency and low product quality stability of the existing pole piece production method, and provides a dry electrode calendaring forming pole piece compound continuous production device. The device can realize the one-time online production and preparation of the dry electrode membrane and the battery pole piece, and adopts the dry electrode calendaring pole piece composite continuous production device to carry out the continuous production of the battery pole piece, so that the production procedures are less, the wireless down-conversion is carried out, the production efficiency is high, the cost is low, and the quality stability of the battery pole piece is high.
The aim of the utility model is achieved by the following technical scheme.
The utility model relates to dry electrode calendaring forming pole piece compound continuous production equipment, which comprises a positive electrode membrane forming system, a negative electrode membrane forming system and a pole piece compound forming system;
the positive electrode membrane forming system and the negative electrode membrane forming system comprise a component distributor, a mixing tank, a spiral conveyor, a vibration screening device, a blank forming roller set, an aqueous lubrication spraying mechanism, a blank cooling mechanism, a blank separating roller set, a blank heating device, a blank breaking roller set, a blank shaping roller set, a membrane forming roller set, a membrane cooling device and a membrane trimming roller set which are sequentially arranged along a feeding direction; the pole piece composite forming system comprises a substrate unreeling machine, an electrostatic dust removing mechanism, a substrate heating device, a vacuum film coating roller set, a pole piece cooling device and a pole piece reeling machine which are sequentially arranged along the tape conveying direction.
As a preferred implementation mode of the dry electrode calendaring pole piece compound continuous production device, the water-based lubrication spraying mechanism comprises two spray heads which are arranged up and down towards the blank cooling mechanism.
As the preferable implementation mode of the dry electrode calendaring pole piece compound continuous production equipment, the blank cooling mechanism comprises two movable cooling feed lines which are arranged up and down oppositely.
As a preferred embodiment of the dry electrode calendaring pole piece composite continuous production equipment, the blank separating roller set comprises a traction roller set and a separating knife arranged on the feeding side of the traction roller set.
As the preferable implementation mode of the dry electrode calendaring pole piece compound continuous production equipment, the break-through roller of the blank break-through roller set and the shaping roller of the blank shaping roller set are cambered rollers.
As a further preferable implementation mode of the dry electrode calendaring pole piece compound continuous production device, the arc surface angle of the break-through roller of the blank break-through roller set is larger than that of the shaping roller of the blank shaping roller set.
As a preferable implementation mode of the dry electrode calendaring forming pole piece compound continuous production device, the forming roller of the film forming roller set is a straight roller.
As a preferable implementation mode of the dry electrode calendaring pole piece compound continuous production device, two ends of the trimming roller of the membrane trimming roller set are provided with cutting knives.
As a preferred embodiment of the dry electrode calendaring pole piece composite continuous production device, the vacuum film coating roller set comprises a pair of film coating rollers arranged in a vacuum chamber.
As the preferable implementation mode of the dry electrode calendaring pole piece compound continuous production equipment, a plurality of guide rollers are arranged between the discharging side of the membrane trimming roller set and the feeding side of the vacuum film covering roller set.
As a preferred embodiment of the dry electrode calendering pole piece composite continuous production device, in any one of the dry electrode calendering pole piece composite continuous production devices, the discharging side of the membrane trimming roller set is provided with an area density meter for detecting the thickness of the electrode membrane.
As a preferred embodiment of the dry electrode calendaring pole piece composite continuous production device, in any one of the dry electrode calendaring pole piece composite continuous production devices, a first CCD camera for detecting the surface quality of the electrode membrane is arranged on the discharging side of the membrane trimming roller set.
In the dry electrode calendaring pole piece composite continuous production equipment, a second CCD camera for detecting the film covering position and alignment degree of the electrode film and performing closed-loop control is arranged on the discharging side of the vacuum film covering roller group.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the dry electrode calendaring forming pole piece composite continuous production equipment is provided with a positive electrode membrane forming system, a negative electrode membrane forming system and a pole piece composite forming system. The positive electrode film forming system and the negative electrode film forming system comprise a component distributor, a mixing tank, a spiral conveyor, a vibration screening device, a blank forming roller set, an aqueous lubrication spraying mechanism, a blank cooling mechanism, a blank separating roller set, a blank heating device, a blank breaking roller set, a blank shaping roller set, a film forming roller set, a film cooling device and a film trimming roller set which are sequentially arranged along the feeding direction; the pole piece composite forming system comprises a substrate unreeling machine, an electrostatic dust removing mechanism, a substrate heating device, a vacuum film coating roller set, a pole piece cooling device and a pole piece reeling machine which are sequentially arranged along the tape conveying direction. When the dry electrode calendaring forming pole piece composite continuous production is carried out, the positive electrode membrane forming system and the negative electrode membrane forming system can be used for respectively forming the positive electrode membrane and the negative electrode membrane, and then the pole piece composite forming system is used for vacuum coating the formed positive electrode membrane and negative electrode membrane on the unreeled base material, so that the continuous production of the pole piece is realized.
The continuous production equipment for the dry electrode calendaring formed pole piece is used for continuous production of the battery pole piece, so that the dry electrode membrane and the battery pole piece can be produced and prepared on line at one time, the production procedures are few, the wireless down-conversion is carried out, the production efficiency is high, the cost is low, the influence of the intermediate process on the product quality is avoided, and the quality stability of the produced battery pole piece is high.
Drawings
FIG. 1 is a schematic structural view of a dry electrode calendaring pole piece composite continuous production apparatus in a production state according to the present utility model in a specific embodiment;
FIG. 2 is a schematic view of the construction of a break-through roller of the blank break-through roller set;
FIG. 3 is a schematic view of the construction of the shaping rollers of the blank shaping roller set;
fig. 4 is a schematic view of the construction of the forming rolls of the film forming roll set.
The drawings are marked: 1-positive electrode film forming system, 11-component distributor, 12-mixing tank, 13-screw conveyor, 14-vibration screen, 15-blank forming roller set, 16-aqueous lubrication spraying mechanism, 161-spray head, 17-blank cooling mechanism, 171-moving cooling feed line, 18-blank separating roller set, 181-traction roller, 182-separating knife, 19-blank heating device, 110-blank breaking roller set, 1101-breaking roller, 111-blank shaping roller set, 1111-shaping roller, 112-film forming roller set, 1121-forming roller, 113-film cooling device, 114-film trimming roller set, 115-surface densitometer, 116-first CCD camera, 117-infrared temperature measuring device, 2-negative electrode film forming system, 3-pole piece composite forming system, 31-substrate unreeling machine, 32-electrostatic dust removing mechanism, 33-substrate heating device, 34-vacuum film coating roller set, 341-film coating roller, 342-vacuum chamber, 35-second CCD camera, 36-pole piece cooling device, 37-pole piece reeling machine, 4-positive electrode blank, 5-positive electrode film, 6-negative electrode blank, 7-negative electrode film, 8-substrate, 9-pole piece and 10-guide roller.
Detailed Description
The technical scheme of the present utility model is described in further detail below with reference to specific examples and drawings, but the scope and embodiments of the present utility model are not limited thereto.
In the description of the specific embodiments, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in place when the inventive product is used, and terms such as "first", "second", etc., are merely for convenience in describing the present utility model and for simplifying the description, rather than indicating or implying that the structure or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model, but rather as indicating or implying relative importance.
Unless specifically stated or limited otherwise, the terms "mounted," "configured," "connected," "secured," and the like should be construed broadly and may be fixedly connected, detachably connected, or integrated; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. In addition, the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
The utility model relates to dry electrode calendaring forming pole piece compound continuous production equipment, which is shown in fig. 1, and comprises a positive electrode membrane forming system 1, a negative electrode membrane forming system 2 and a pole piece compound forming system 3.
The positive electrode membrane forming system 1 can perform dry calendaring forming of the positive electrode membrane 5, the negative electrode membrane forming system 2 can perform dry calendaring forming of the negative electrode membrane 7, and the pole piece composite forming system 3 can form a battery pole piece 9 by compositing the positive electrode membrane 5 and the negative electrode membrane 7 on the base material 8. In the production process, the positive electrode membrane forming system 1 and the negative electrode membrane forming system 2 are respectively and independently arranged on the outer side of the pole piece composite forming system 3, such as the upper side, the lower side or the left side and the right side, the formed positive electrode membrane 5 and negative electrode membrane 7 are respectively guided into the pole piece composite forming system 3 through guide rollers 10, and the pole piece composite forming system 3 and the unreeled base material 8 are compounded into a pole piece 9.
In the preferred embodiment, the positive electrode membrane forming system 1 and the negative electrode membrane forming system 2 may be systems having the same configuration, except that the object of dry calendaring is different. Thus, in some alternative embodiments, the positive electrode membrane forming system 1 is opposite to the negative electrode membrane forming system 2, i.e. the positive electrode membrane forming system 1 may be used as a dry calendaring system for the positive electrode membrane 5 or the negative electrode membrane 7, whereas the corresponding negative electrode membrane forming system 2 is opposite for the dry calendaring of the negative electrode membrane 7 or the positive electrode membrane 5, e.g. the dry press delay of the positive electrode membrane forming system 1 for the positive electrode membrane 5 is the negative electrode membrane forming system 2 for the dry calendaring of the negative electrode membrane 7, and the dry press delay of the positive electrode membrane forming system 1 for the negative electrode membrane 7 is the negative electrode membrane forming system 2 for the dry calendaring of the positive electrode membrane 5.
Specifically, the positive electrode film forming system 1 and the negative electrode film forming system 2 having the same configuration include a component dispenser 11, a mix tank 12, a screw conveyor 13, a vibration sifter 14, a blank forming roller group 15, an aqueous lubrication spray mechanism 16, a blank cooling mechanism 17, a blank separating roller group 18, a blank heating device 19, a blank breaking roller group 110, a blank shaping roller group 111, a film forming roller group 112, a film cooling device 113, and a film trimming roller group 114, which are disposed in this order in the feeding direction.
Wherein, during production, the component distributor 11 is used for accurately adding the anode material, the cathode material and other micro-proportioning materials into the mixing tank 12 according to the process requirement proportion; the mixing tank 12 is used for uniformly stirring the materials in the mixing tank at the process required temperature; the screw conveyor 13 is used for accurately and quantitatively conveying the uniformly stirred materials in the mixing tank 12 to the vibration screening device 14; the vibration screening device 14 is used for conveying the screened material to the blank forming roller group 15 according to the granularity required by the process; the blank forming roller set 15 comprises two forming rollers which are oppositely arranged left and right, and is used for rolling materials which fall between the two forming rollers and meet the granularity required by the process into electrode blanks with the thickness required by the process under the process pressure, such as positive electrode blanks 4 and negative electrode blanks 6 which are respectively formed by the positive electrode film forming system 1 and the negative electrode film forming system 2 correspondingly; the discharge side of the blank-forming roller set 15 is provided with a guide roller 10 for guiding the electrode blank to a blank cooling mechanism 17.
The aqueous wetting spray mechanism 16 comprises two spray heads 161 which are arranged on two sides of the electrode blank vertically opposite to each other, the spray nozzles of the spray heads 161 face the surface of the blank cooling mechanism 17, aqueous lubrication spray can be sprayed on the surface of the blank cooling mechanism, the blank is prevented from being adhered to the surface of the blank cooling mechanism 17, and meanwhile, the aqueous lubrication spray adhered to the electrode blank can be volatilized in the subsequent process without affecting the production and quality of the pole piece 9.
The blank cooling mechanism 17 comprises two movable cooling feed lines 171 which are arranged up and down oppositely, wherein the movable cooling feed lines 171 can be closed-loop feed belts driven by rollers, and cooling devices such as cooling pipes or spray water pipes can be arranged in the movable cooling feed lines; the two movable cooling feed lines 171 are rotated in the direction from the blank forming roller group 15 to the blank separating roller group 18 during operation to feed the electrode blanks, cool the electrode blanks to normal temperature, restore the physical properties of the electrode blanks at normal temperature, and prevent the electrode blanks from being separated from the surface of the movable cooling feed lines 171 due to high temperature. The blank separating roller set 18 is used for separating the cooled electrode blank from the blank cooling mechanism 17 and simultaneously providing traction force for the electrode blank; the blank separating roller set 18 comprises a pulling roller set consisting of a pair of pulling rollers 181 which are opposite up and down, and a separating knife 182 arranged on the feeding side of the pulling roller set, wherein the cutting edge of the separating knife 182 is cut at the discharge hole of the blank cooling mechanism 17, the separating knife 182 is used for applying physical separation to individual undetached points of the cooled electrode blank when the electrode blank is separated, assisting the electrode blank to completely separate from the surface of the movable cooling feed line 171, and the pulling roller set consisting of the pair of pulling rollers 181 is used for providing traction force and separating force for the electrode blank.
The blank breaking-through unit 110 is used for primarily positioning and shaping the electrode blank, and can reduce the requirement on breaking-through pressure; the blank shaping unit 111 is used for expanding and calendaring the electrode blank after positioning and shaping step by step, and can effectively prevent the electrode from generating bubbles and wrinkles in the process, and can drive surface particles to two ends, and meanwhile, the requirement on shaping pressure can be reduced.
In a preferred embodiment, referring to fig. 2 and 3, the break-through roller 1101 of the blank break-through roller set 110 and the shaping roller 1111 of the blank shaping roller set 111 are cambered rollers, the roller surface of the break-through roller 1101 has a cambered surface R1, the roller surface of the shaping roller 1111 has a cambered surface R2, and the cambered surface angle of the break-through roller 1101 of the blank break-through roller set 110 is larger than the cambered surface angle of the shaping roller 1111 of the blank shaping roller set 111. Therefore, when the electrode blank is formed, the breakthrough roller 1101 with the cambered surface R1 performs preliminary compaction and positioning on the electrode blank to form an initial film, so that the rolling center of the initial film is stable and full, compared with a straight roller, the electrode blank can be realized by using smaller force, the shaping roller 1111 with the cambered surface R2 performs multi-pass unfolding and compaction on the initial film to form an intermediate film, the inside of the electrode film can be effectively exhausted in the axial unfolding process, bubbles in the electrode film are prevented from being clamped in the electrode film, and the anti-wrinkling effect can be achieved. In a further preferred embodiment, the blank-shaping unit 111 may be provided with several groups according to the process requirements, and the angles of the shaping rollers 1111 of the groups of blank-shaping units 111 decrease in the direction of the stream.
The film forming roll set 112 is used to calender the electrode blank to be fully unwound into an electrode film conforming to the final thickness. As shown in fig. 4, the forming roller 1121 of the film forming roller set 112 has a straight surface R0, which is a straight surface roller, and can perform all-directional and all-directional rolling forming on the electrode blank to be fully unfolded in the rolling process, so that the rolled electrode film has a uniform thickness.
In another preferred embodiment, a blank heating device 19 may be disposed between the blank separating roller set 18 and the blank breaking roller set 110 to heat the electrode blank at the position where the blank separating roller set 18 separates, so that the electrode blank is brought to the temperature required by the process before entering the calendaring process, and calendaring of the electrode blank into a film is facilitated. In a further preferred embodiment, an infrared temperature measuring device 117 may be disposed between the blank heating device 19 and the blank breaking roller set 110, for detecting the temperature of the electrode blank before rolling in real time on line, and performing a closed-loop control of temperature control, so as to ensure that the electrode blank is rolled at the process required temperature.
The film cooling device 113 is used for cooling the electrode film formed by calendaring to normal temperature before trimming, so that the trimming efficiency and quality are improved. The film trimming roller set 114 is used for trimming two ends of the electrode film at normal temperature, removing the accumulated surface layer particle area, and simultaneously obtaining a finished electrode film with the width which finally meets the process requirement, such as a positive electrode film 5 and a negative electrode film 7 which are respectively and correspondingly formed by the positive electrode film forming system 1 and the negative electrode film forming system 2, wherein the film trimming roller set 114 comprises a pair of trimming rollers which are arranged up and down oppositely, two ends of the trimming rollers are provided with trimming cutters, and the electrode film which is calendered into a film passes through a gap between the pair of trimming rollers and is trimmed by the trimming cutters on the end parts of the trimming rollers.
Specifically, the pole piece composite forming system 3 comprises a substrate unreeling machine 31, an electrostatic dust removing mechanism 32, a substrate heating device 33, a vacuum film coating roller set 34, a pole piece cooling device 36 and a pole piece reeling machine 37 which are sequentially arranged along the tape conveying direction.
Wherein, the substrate unreeling machine 31 is provided with an unreeling shaft or unreeling rod for unreeling and conveying the current collector substrate 8; the electrostatic dust removing mechanism 32 is used for cleaning dust impurities on the surface of the unreeled base material 8 before film coating through static electricity; the substrate heating device 33 is used for heating the substrate 8 before film coating to a temperature required by the film coating process. The vacuum laminating roller set 34 is used for laminating the substrate 8, the positive electrode membrane 5 and the negative electrode membrane 7 in a vacuum environment to form a pole piece 9; the vacuum film coating roller set 34 includes a pair of film coating rollers 341 that are vertically opposed to each other, the pair of film coating rollers 341 are disposed in a vacuum chamber 342, and a substrate 8, a positive electrode film 5, and a negative electrode film 7 enter the vacuum chamber 342 and pass through a gap between the pair of film coating rollers 341 during film coating, and are roll-laminated by the pair of film coating rollers 341 in a vacuum environment of the vacuum chamber 342.
Further, a plurality of guide rollers 10 are provided between the discharge side of the film trimming roller set 114 of the positive electrode film forming system 1 and the feed side of the vacuum coating roller set 34, and between the discharge side of the film trimming roller set 114 of the negative electrode film forming system 2 and the feed side of the vacuum coating roller set 34. The positive electrode film 5 drawn by the positive electrode film forming system 1 and the negative electrode film 7 drawn by the negative electrode film forming system 2 can be guided into the vacuum film coating roller set 34 from two sides of the unreeled base material 8 by corresponding guide rollers 10 respectively so as to be compounded with the base material 8 into a pole piece 9 in the vacuum film coating roller set 34.
And the pole piece cooling device 36 is used for cooling the composite formed pole piece 9 to normal temperature before winding. The pole piece winding machine 37 is provided with an unwinding shaft or an unwinding roller for winding the pole piece 9 of the finished product.
Example two
In the dry electrode calendaring pole piece composite continuous production apparatus of this embodiment, as shown in fig. 1, the output side of the membrane trimming roller set 114 of the positive electrode membrane forming system 1 and the output side of the membrane trimming roller set 114 of the negative electrode membrane forming system 2 are both provided with an area density meter 115 for detecting the thickness of the electrode membrane, so as to realize on-line quality monitoring of the thicknesses of the positive electrode membrane 5 and the negative electrode membrane 7 before entering the lamination.
In a further preferred embodiment, referring again to fig. 1, both the discharge side of the film trimming roller set 114 of the positive electrode film forming system 1 and the discharge side of the film trimming roller set 114 of the negative electrode film forming system 2 are provided with a first CCD camera 116 for detecting the surface quality of the electrode film. In a specific embodiment, the first CCD camera 116 may be specifically disposed on a side of the surface densitometer 115 facing away from the film trimming roller set 114, where the first CCD camera 116 and the surface densitometer 115 may together perform online real-time quality detection and closed-loop control on the electrode film.
In another preferred embodiment, referring to fig. 1 again, in the pole piece composite forming system 3, a second CCD camera 35 is disposed at the discharging side of the vacuum film coating roller set 34, after the vacuum film coating roller set 34 presses the substrate 8 and the electrode film to form the pole piece 9 in vacuum, the second CCD camera 35 detects the film coating position and alignment degree of the electrode film and performs closed-loop control before the subsequent tape is wound, so as to realize the quality on-line monitoring of the battery pole piece 9.
Example III
The utility model relates to a dry electrode calendaring pole piece composite continuous production method, referring to fig. 1, adopting the dry electrode calendaring pole piece composite continuous production equipment of the first embodiment or the second embodiment for production, specifically comprising the following steps:
s1, adopting a positive electrode membrane forming system 1 and a negative electrode membrane forming system 2 to respectively form a positive electrode membrane 5 and a negative electrode membrane 7:
s11, forming a positive electrode blank
In the positive electrode membrane forming system 1, a positive electrode material and other micro-proportion materials are added into a mixing tank 12 through a component distributor 11 and are fully and uniformly stirred at the process temperature, then are accurately and quantitatively conveyed to a vibration screening device 14 through a screw conveyor 13, and are conveyed to a blank forming roller set 15 to be rolled and formed into a positive electrode blank 4 with the process thickness after being screened;
s12, forming positive electrode film
Then the positive electrode blank 4 is conveyed to a blank cooling mechanism 17 sprayed with the aqueous lubricant by an aqueous lubrication spraying mechanism 16 for online cooling, and after cooling, the blank is separated from the blank cooling mechanism 17 by a blank separating roller set 18, and the next stage is carried out after the positive electrode blank 4 is formed; at this time, the positive electrode blank 4 is heated by a blank heating device 19 and measured by an infrared temperature measuring device 117 to reach the process temperature, then is subjected to preliminary positioning and shaping by a blank breaking roller set 110, is subjected to online shaping by a plurality of blank shaping roller sets 111, is subjected to membrane shaping by a membrane shaping roller set 112 to form a positive electrode membrane 5, and is subjected to online cooling by a membrane cooling device 113 to form a final positive electrode membrane finished product by membrane trimming; the thickness and the surface quality of the positive electrode membrane 5 are detected in real time by combining the detection of the surface density meter 115 and the detection of the first CCD camera 116, and closed-loop control is provided;
after the formation of the positive electrode membrane 5 is completed, the next stage is entered.
S11', negative electrode blank shaping
In the negative electrode membrane forming system 2, a negative electrode material and other micro-proportion materials are added into a mixing tank 12 through a component distributor 11 and are fully and uniformly stirred at the process temperature, then are accurately and quantitatively conveyed to a vibration screening device 14 through a screw conveyor 13, and are conveyed to a blank forming roller set 15 to be rolled and formed into a negative electrode blank 6 with the process thickness after being screened;
s12', negative electrode film forming
Then the negative electrode blank 6 is conveyed to a blank cooling mechanism 17 sprayed with the aqueous lubricant by an aqueous lubrication spraying mechanism 16 for online cooling, and after cooling, the blank is separated from the blank cooling mechanism 17 by a blank separating roller set 18, and the negative electrode blank 6 enters the next stage after being molded; at this time, the negative electrode blank 6 is heated by a blank heating device 19 and measured by an infrared temperature measuring device 117 to reach the process temperature, then is subjected to preliminary positioning and shaping by a blank breaking roller set 110, is subjected to online shaping by a plurality of blank shaping roller sets 111, is subjected to membrane shaping by a membrane shaping roller set 112 to form a negative electrode membrane 7, and is subjected to online cooling by a membrane cooling device 113 to form a final negative electrode membrane finished product by membrane trimming; and then the thickness and the surface quality of the negative electrode membrane 7 are detected in real time by combining the detection of the surface density meter 115 and the detection of the first CCD camera 116, and closed-loop control is provided;
after the formation of the negative electrode membrane 7 is completed, the next stage is entered.
S2, carrying out pole piece composite molding by adopting a pole piece composite molding system 3:
the current collector substrate 8 is unreeled through a substrate unreeler 31 and subjected to electrostatic dust removal by an electrostatic dust removal mechanism 32, and is heated to a process temperature through a substrate heating device 33, and then a vacuum film laminating roller set 34, a positive electrode film 5 and a negative electrode film 7 are jointly subjected to vacuum film laminating to form a pole piece 9; the pole piece 9 after film coating is continuously wound and taken, the film coating positions and alignment degrees of the positive electrode film 5 and the negative electrode film 7 on the two sides of the substrate are detected by a second CCD camera 35, closed-loop control is carried out, and the pole piece 9 is wound by a pole piece winding machine 37 after being cooled by a pole piece cooling device 36, so that the preparation of the pole piece 9 is completed.
The above embodiments are merely preferred embodiments of the present utility model and only the technical solutions of the present utility model have been described in further detail, but the above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments, the scope and implementation of the present utility model are not limited thereto, and any changes, combinations, deletions, substitutions or modifications made without departing from the spirit and principles of the present utility model are included in the scope of the present utility model.
Claims (11)
1. The dry electrode calendaring pole piece composite continuous production equipment is characterized by comprising a positive electrode membrane forming system, a negative electrode membrane forming system and a pole piece composite forming system;
the positive electrode membrane forming system and the negative electrode membrane forming system comprise a component distributor, a mixing tank, a spiral conveyor, a vibration screening device, a blank forming roller set, an aqueous lubrication spraying mechanism, a blank cooling mechanism, a blank separating roller set, a blank heating device, a blank breaking roller set, a blank shaping roller set, a membrane forming roller set, a membrane cooling device and a membrane trimming roller set which are sequentially arranged along a feeding direction; the pole piece composite forming system comprises a substrate unreeling machine, an electrostatic dust removing mechanism, a substrate heating device, a vacuum film coating roller set, a pole piece cooling device and a pole piece reeling machine which are sequentially arranged along the tape conveying direction.
2. The dry electrode calendaring pole piece composite continuous production apparatus according to claim 1, wherein the aqueous lubrication spraying mechanism comprises two spray heads arranged up and down towards the blank cooling mechanism.
3. The dry electrode calendaring pole piece composite continuous production apparatus according to claim 1, wherein the blank cooling mechanism comprises two moving cooling feed lines which are arranged up and down oppositely.
4. The dry electrode calendaring pole piece composite continuous production apparatus according to claim 1, wherein the blank separating roller set comprises a pull roller set and a separating knife arranged on a feeding side of the pull roller set.
5. The dry electrode calendaring pole piece composite continuous production apparatus according to claim 1, wherein the break-through roller of the blank break-through roller set and the shaping roller of the blank shaping roller set are cambered rollers.
6. The dry electrode calendaring pole piece composite continuous production apparatus of claim 5, wherein the arc surface angle of the break-through roller of the blank break-through roller set is greater than the arc surface angle of the shaping roller of the blank shaping roller set.
7. The dry electrode calendaring pole piece composite continuous production apparatus according to claim 1, wherein the forming roller of the film forming roller set is a straight roller.
8. The dry electrode calendaring pole piece composite continuous production apparatus according to claim 1, wherein both ends of the trimming roller of the membrane trimming roller set are equipped with cutting blades.
9. The dry electrode calendaring pole piece composite continuous production apparatus of claim 1, wherein the vacuum film roll set comprises a pair of film rolls disposed within a vacuum chamber.
10. The dry electrode calendaring pole piece composite continuous production apparatus according to claim 1, wherein a plurality of guide rollers are arranged between the discharging side of the membrane trimming roller set and the feeding side of the vacuum film covering roller set.
11. The dry electrode calender forming pole piece composite continuous production equipment according to any one of claims 1 to 10, wherein the discharging side of the membrane trimming roller set is provided with an area density meter for detecting the thickness of an electrode membrane; and/or the number of the groups of groups,
a first CCD camera for detecting the surface quality of the electrode membrane is arranged on the discharging side of the membrane trimming roller set;
and/or a second CCD camera for detecting the film covering position and alignment degree of the electrode film and performing closed-loop control is arranged on the discharging side of the vacuum film covering roller group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322166929.9U CN220652041U (en) | 2023-08-11 | 2023-08-11 | Dry electrode calendaring pole piece composite continuous production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322166929.9U CN220652041U (en) | 2023-08-11 | 2023-08-11 | Dry electrode calendaring pole piece composite continuous production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220652041U true CN220652041U (en) | 2024-03-22 |
Family
ID=90269617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322166929.9U Active CN220652041U (en) | 2023-08-11 | 2023-08-11 | Dry electrode calendaring pole piece composite continuous production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220652041U (en) |
-
2023
- 2023-08-11 CN CN202322166929.9U patent/CN220652041U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI751476B (en) | System and methods for manufacturing a dry electrode | |
| CN106129326B (en) | A kind of preparation method of water system stack type lithium ion battery pole piece | |
| CN210730683U (en) | Pole piece preparation system | |
| CN213199119U (en) | Automatic laminating cross cutting machine of reel non-setting adhesive nothing waste discharge | |
| CN110993856B (en) | Device for preparing double-layer composite diaphragm of lithium ion battery and using method thereof | |
| DE102020007718A1 (en) | METHOD AND DEVICE FOR MANUFACTURING ELECTRODES FOR LITHIUM-ION BATTERIES | |
| CN220652041U (en) | Dry electrode calendaring pole piece composite continuous production equipment | |
| CN115148947A (en) | Production system and production method for dry coating pressed pole piece | |
| CN117012890A (en) | Dry electrode calendaring pole piece composite continuous production method and device | |
| CN205587249U (en) | Pole piece preparation system | |
| CN208771946U (en) | Electrodes of lithium-ion batteries roller surface automatic cleaning apparatus | |
| CN218333853U (en) | Dry coating pressing pole piece production system | |
| CN106743862A (en) | A kind of OPP high-speed and energy-savings bar coater | |
| CN115911278B (en) | Lithium battery pole piece flaking system | |
| CN217035719U (en) | Strip thermal compounding device for battery/capacitor | |
| CN211733249U (en) | Lithium battery diaphragm slitting device | |
| CN212315667U (en) | Continuous manufacturing equipment for electrodialysis partition plates | |
| CN218695946U (en) | Rolling, slitting and numerical control integrated all-in-one machine | |
| CN218642098U (en) | Wrinkle-removing rolling equipment | |
| CN116207330B (en) | Manufacturing equipment and manufacturing method of solid-state battery micro-battery core | |
| CN220753489U (en) | Manufacturing equipment of fuel cell CCM (continuous membrane) membrane | |
| CN220766063U (en) | Wet piece of cloth production is with cutting and dotting equipment | |
| CN116682929B (en) | Automatic production line for dry electrode preparation of power battery | |
| CN219106243U (en) | Film-making composite device and winding system | |
| CN115029918A (en) | Melt-blown fabric processing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |