CN115939328B - Cladding device of copper lithium composite belt - Google Patents
Cladding device of copper lithium composite belt Download PDFInfo
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- CN115939328B CN115939328B CN202310220158.9A CN202310220158A CN115939328B CN 115939328 B CN115939328 B CN 115939328B CN 202310220158 A CN202310220158 A CN 202310220158A CN 115939328 B CN115939328 B CN 115939328B
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- lithium
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- traction
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- 239000002131 composite material Substances 0.000 title claims abstract description 21
- OPHUWKNKFYBPDR-UHFFFAOYSA-N copper lithium Chemical compound [Li].[Cu] OPHUWKNKFYBPDR-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000005253 cladding Methods 0.000 title claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 196
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 192
- 230000007246 mechanism Effects 0.000 claims abstract description 147
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000011889 copper foil Substances 0.000 claims abstract description 95
- 238000010030 laminating Methods 0.000 claims abstract description 85
- 238000004804 winding Methods 0.000 claims abstract description 57
- 239000012528 membrane Substances 0.000 claims description 51
- 238000001514 detection method Methods 0.000 claims description 16
- 238000012937 correction Methods 0.000 claims description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 238000000576 coating method Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The application relates to the field of preparation of a solid-state battery cathode, in particular to a covering device of a copper-lithium composite tape, which comprises a mounting plate, wherein a lithium tape liner unreeling mechanism, a liner reeling mechanism, a copper foil unreeling mechanism and a covering mechanism are arranged on the mounting plate; the covering mechanism comprises a pair of covering rollers which are rotationally connected with the mounting plate and a covering motor which drives the covering rollers to rotate; the lining film winding mechanism comprises a lining film winding roller rotatably connected to the mounting plate and a lining film winding motor for driving the lining film winding roller to rotate, and the rotating speed of the lining film winding roller is greater than that of the laminating roller. The application has the effect of preventing the lithium belt from being broken when the ultrathin lithium belt and the copper foil are pressed and coated.
Description
Technical Field
The application relates to the field of solid-state battery cathode preparation, in particular to a covering device of a copper-lithium composite belt.
Background
Lithium batteries are widely used in the fields of aerospace, computers, mobile communication equipment, electric automobiles and the like due to the advantages of high energy density, long cycle life and wide applicable temperature range. Along with the development of society and the progress of science and technology, the requirements on the energy density and the cycle life of a lithium battery are higher and higher, but the current lithium ion battery which takes graphite as a negative electrode is difficult to meet the social requirements, so that a novel positive and negative electrode material with higher specific capacity needs to be developed. For the cathode material, the specific energy of the battery can be effectively improved due to the fact that the metal lithium has high specific capacity (3860 mAh/g, 10 times of that of a graphite cathode) and the lowest oxidation-reduction potential (3.04V VS standard hydrogen potential).
In the current formed battery, the positive electrode material is made of ternary materials of lithium iron phosphate, lithium cobalt oxide or high nickel, lithium is contained in the positive electrode material, the lithium metal used by the negative electrode is few (the thickness of the lithium metal is smaller than 50 um), if a supporting film matched with the lithium metal belt is not used for manufacturing the negative electrode material, the lithium metal belt is easily broken and adhered, therefore, the currently used negative electrode of the solid-state battery is a lithium negative electrode which is made by covering an ultrathin lithium belt (the thickness is 10um-50um is different) on a copper foil, and copper is used as a current collector and plays a supporting role; because metallic lithium is very soft, the ultrathin lithium strip can be adhered to a layer of lining film to be rolled together after being rolled, and because the adhesive force of the lining film is very small, no adhesive force exists between the lining film and the ultrathin lithium strip basically, when the ultrathin lithium strip and the copper foil are pressed and covered by the pressing mechanism, the lining film needs to be peeled off from the ultrathin lithium strip in advance, and the normal covering and the combination of the lithium strip and the copper foil cannot be influenced.
Because the thickness of the ultrathin lithium belt is small and the material is soft, after the lining film is stripped from the ultrathin lithium belt in advance, the ultrathin lithium belt needs to bear the traction tension of the pressing mechanism independently, and in the traction process, the problem that the ultrathin lithium is easily deformed and even broken by traction occurs easily.
Disclosure of Invention
In order to prevent the problem that the lithium belt is broken when the ultrathin lithium belt and the copper foil are pressed and coated, the application provides a coating device of the copper-lithium composite belt.
The application provides a copper lithium composite belt cover closes device adopts following technical scheme:
the utility model provides a cover and close device of copper lithium composite tape, includes the mounting panel, be provided with lithium area lining membrane unreeling mechanism, lining membrane winding mechanism, copper foil unreeling mechanism and cover and close the mechanism on the mounting panel, lithium area lining membrane unreeling mechanism and lining membrane winding mechanism are located and cover and close mechanism one side and the position department that leans on, copper foil unreeling mechanism is located and covers and close the mechanism top, be provided with the peel roller of peeling off lining membrane between lithium area lining membrane unreeling mechanism and the lining membrane winding mechanism, cover and close the mechanism and compress tightly the lithium area and the copper foil of peeling off the lining membrane; the covering mechanism comprises a pair of covering rollers which are rotationally connected with the mounting plate and a covering motor which drives the covering rollers to rotate; the lining film winding mechanism comprises a lining film winding roller and a lining film winding motor, wherein the lining film winding roller is rotatably connected to the mounting plate, the lining film winding motor drives the lining film winding roller to rotate, and the rotating speed of the lining film winding roller is greater than that of the laminating roller.
Through adopting above-mentioned technical scheme, this application is when covering lithium area and copper foil, through the rotational speed of control lining membrane wind-up roll, make the rotational speed of lining membrane wind-up roll be greater than the rotational speed that covers the roll all the time, under the circumstances that lining membrane winding speed improves gradually, can pull lithium area fast moving, thereby control the tape running speed of lithium area, can realize breaking away from behind the lining membrane that lithium area can carry towards covering the roll that closes, thereby will break away from behind the lining membrane tension control all the time in less scope of lithium area, prevent that the lithium area from being broken or draw the deformation by great tension, lead to the lithium area can not continue to use and cover with the copper foil and close.
Optionally, be provided with the traction mechanism who pulls the lining membrane on the mounting panel, traction mechanism is located between peel off roller and the lining membrane winding mechanism, traction mechanism is including rotating the traction roller and the pivoted traction motor of drive traction roller of connection on the mounting panel, the traction roller is used for controlling the tape running speed of lining membrane, the rotational speed of traction roller is greater than the rotational speed who covers the laminating roller.
Through adopting above-mentioned technical scheme, the traction mechanism who sets up between peel off roller and lining membrane winding mechanism, make between lithium area lining membrane unreeling mechanism and the lining membrane winding mechanism can form a closed loop of tension and speed, the traction mechanism who sets up on the lining membrane, can realize the accurate control to lining membrane speed, avoid lining membrane winding mechanism to be easily influenced by the gradual grow of lining membrane winding diameter, lead to lining membrane winding motor's rotational speed to become slowly gradually, the traction mechanism who sets up in addition can realize little tension control, make traction motor drive the rotational speed of traction roller and cover and close the roller rotational speed slightly all the time, just can realize from glass roller to cover the little tension or the state of zero tension of lithium area between the roller.
Optionally, the speed of the traction roller is 0.04% -0.06% faster than the speed of the laminating roller.
By adopting the technical scheme, the rotating speed of the traction roller is always 0.04% -0.06% faster than that of the laminating roller, so that the tension of the lithium belt can be controlled in a relatively small range, and the length of the lithium belt accumulated between the stripping roller and the laminating roller can be prevented from being too long.
Optionally, the laminating device further comprises a speed control system for eliminating the redundant length of the lithium belt between the stripping roller and the laminating roller, the speed control system comprises a plurality of speed sensors and a PLC (programmable logic controller), the speed sensors are respectively used for monitoring the rotating speed of the traction roller, the rotating speed of the laminating roller and the travelling speed of the lithium belt lining film, the PLC is respectively electrically connected with the speed sensors, and the PLC is electrically connected with the traction motor.
By adopting the technical scheme, the speed sensor monitors the tape feeding speed of the traction roller, the laminating roller and the lithium tape lining film in real time, the monitored speed signals are transmitted to the PLC, and the speeds of the traction roller and the laminating roller can be controlled in real time through the PLC, so that the rotating speed of the traction tube can be always maintained to be larger than the rotating speed of the laminating roller; and after the lithium belt is accumulated for a certain length between the stripping roller and the laminating roller, the PLC can adjust the rotating speed of the traction roller, so that the lithium belt with accumulated length can be eliminated, and the provided speed control system can accurately regulate and control the tension of the lithium belt and can gradually eliminate the problem that the conveying length of the lithium belt is longer than the required length of the laminating roller due to the fact that the speed of the traction roller is too high.
Optionally, the laminating device further comprises a tension control system for controlling the tension of the lithium belt between the peeling roller and the laminating roller, the tension control system comprises a tension controller and a tension detection roller which is rotationally connected to the mounting plate and used for detecting the lithium belt, two ends of the tension detection roller are connected with tension sensors, the tension controller is connected with the tension sensors, and the tension controller is connected with the traction motor.
Through adopting above-mentioned technical scheme, the tension that tension control system that sets up can directly obtain the lithium area through tension controller and receive, makes things convenient for the staff to learn the lithium area and receive at every moment tension to the tension control system that sets up can be through the timely automatic adjustment of going on of the tension that the lithium area received, avoids the tension of lithium area to surpass the scope that the lithium area can bear.
Optionally, the laminating device further comprises a deviation rectifying control system acting on the copper foil and the lithium belt, the deviation rectifying control system comprises a deviation rectifying controller, a deviation rectifying control component used for correcting the deviation of the copper foil or the lithium belt and a grating sensor arranged at the edge of the copper foil or the lithium belt, the grating sensor is connected with the deviation rectifying controller, and the deviation rectifying controller is connected with the deviation rectifying control component.
Through adopting above-mentioned technical scheme, the control system that rectifies that sets up can avoid lithium area and copper foil to cover the in-process that closes the roller to carry, appears the problem that lithium area and copper foil skew, prevents that lithium area and copper foil edge from being unable to align to when copper foil and lithium area appear the offset, the controller of rectifying can carry out automatic operation to the control assembly that rectifies, makes the control assembly of rectifying can be with the offset automatic correction of lithium area and copper foil back to normal state.
Optionally, the discharging side of the lithium strip lining film unreeling mechanism and the copper foil unreeling mechanism is provided with a discharging detection mechanism, the discharging detection mechanism comprises an infrared sensor arranged on a mounting plate, the infrared sensor is located at the edge of the lithium strip lining film or the edge of the copper foil, and is connected with a PLC, and the PLC is connected with a traction motor and a covering motor.
Through adopting above-mentioned technical scheme, after lithium area lining membrane coiled material or copper foil coiled material use are accomplished, the ejection of compact detection mechanism of setting can remind the staff to renew new coiled material as soon as possible.
Optionally, be provided with the indent subassembly between copper foil unreeling mechanism and the laminating mechanism, the indent subassembly is including a pair of indent roller that the symmetry set up, and the copper foil passes between two indent rollers, evenly be fixed with a plurality of indent pieces on the global of indent roller, the tip of indent roller is provided with the drive motor of drive self pivoted.
Through adopting above-mentioned technical scheme, before the copper foil is carried to covering and closing the mechanism, two indent rollers can make the recess on the copper foil surface, when covering the lithium area and closing in copper foil both sides, can make copper foil and lithium area cover more closely.
Optionally, cover and close the device and include the heating element that sets up in covering and close the mechanism below, cover and close the mechanism and compress tightly lithium area lining membrane and copper foil jointly, heating element is including rotating the heating roller that sets up on the mounting panel, the heating roller is laminated with the lining membrane, lining membrane winding mechanism sets up in heating element below for carry out the rolling to the lining membrane after the heating.
Through adopting above-mentioned technical scheme, when covering lithium area and copper foil, can make the lining membrane follow the lithium area and compress tightly with the copper foil and cover and close jointly, prevent that the lithium area from being broken or receive tensile influence easily, after lining membrane and lithium area are compressed tightly to the copper foil, the heating roller of setting can heat the lining membrane on lithium area surface, makes the lining membrane can be better follow the lithium area and peels off, and the lining membrane after peeling off can be rolled up to lining membrane winding mechanism.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the embodiment of the application, the rotation speed of the traction roller is always controlled to be more than 0.05% of the rotation speed of the laminating roller, so that the lithium belt is prevented from being easily affected by tension after the lining film is peeled off, the lithium belt is prevented from being broken or deformed by pulling, and the color tension of the lithium belt is always controlled within the deformation range of the lithium belt;
2. the speed control system provided by the embodiment of the application can realize accurate regulation and control of the speeds of the traction roller and the laminating roller, so that the lithium belt is prevented from being pulled and deformed, meanwhile, the speeds of the traction roller and the laminating roller are prevented from being manually regulated, and the situation of error regulation is easy to occur;
3. the tension control system that this application set up can be accurate monitor the tension of lithium area behind the release liner membrane, through observing tensile data, adjusts the speed of traction roller or laminating roller, makes equipment whole more automatic, also more makes things convenient for the staff to operate.
Drawings
FIG. 1 is a schematic overall structure of the present application;
FIG. 2 is a schematic diagram of an integrated covering mechanism according to an embodiment of the present application;
FIG. 3 is a system control flow diagram of an embodiment of the present application;
FIG. 4 is a schematic diagram of a two-dimensional tension control system according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a two-dimensional present deviation-correcting control system according to an embodiment of the present application;
fig. 6 is a schematic diagram of a dimple assembly embodied in an embodiment of the present application.
Reference numerals illustrate: 1. a mounting plate; 11. a lithium strip lining film unreeling mechanism; 111. a lithium strip lining film unreeling roller; 112. a lithium film-lined unreeling motor; 12. a lining film winding mechanism; 121. film lining wind-up roll; 122. a lining film winding motor; 13. a copper foil unreeling mechanism; 131. a copper foil unreeling roller; 132. a copper foil unreeling motor; 14. a covering mechanism; 141. a laminating roller; 142. a cover-closing motor; 15. a peeling roller; 16. a rotating roller; 2. a traction mechanism; 21. a traction roller; 22. a traction motor; 3. a speed control system; 31. a speed sensor; 32. a PLC controller; 4. a tension control system; 41. a tension controller; 42. a tension detecting roller; 43. a tension sensor; 5. a deviation rectifying control system; 51. a deviation rectifying controller; 52. a grating sensor; 53. a deviation rectifying control component; 531. a bearing plate; 532. a rotating motor; 533. a mounting frame; 534. a correction roller; 6. an infrared sensor; 7. a gravure roll; 72. and (5) concave pressing blocks.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-6.
The embodiment of the application discloses a covering device of a copper-lithium composite belt.
Example 1
Referring to fig. 1 and 2, the laminating device comprises a vertically arranged mounting plate 1, a lithium-band lining film unreeling mechanism 11, a lining film reeling mechanism 12, a copper foil unreeling mechanism 13 and a laminating mechanism 14 are respectively arranged on one side surface of the mounting plate 1, the copper foil unreeling mechanism 13 is positioned right above the laminating mechanism 14, the lithium-band lining film unreeling mechanism 11 and the lining film reeling mechanism 12 are positioned above the laminating mechanism 14 and at one side of the copper foil unreeling mechanism 13, and the lining film reeling mechanism 12 is positioned above the lithium-band lining film unreeling mechanism 11, in the embodiment of the invention, the lining film reeling mechanism 12 and the lithium-band lining film unreeling mechanism 11 are both provided with a pair and are symmetrically arranged at two sides of the copper foil unreeling mechanism 13; when the lithium belt and the copper foil are compressed and coated, the lithium belt lining film composite roll is unwound through the lithium belt lining film unwinding mechanism 11, in the unwinding process, the lining film can play a role of pulling the lithium belt, so that the lithium belt can be pulled to the coating mechanism 14, the pulled lining film is wound on the lining film winding mechanism 12, the copper foil unwinding mechanism 13 can gradually unwind the copper foil and is conveyed to the coating mechanism 14, and the provided pair of lithium belt lining film unwinding mechanisms 11 can simultaneously compress and coat the lithium belt on the two side surfaces of the copper foil in the coating process, so that the obtained copper-lithium composite belt is better applied to the negative electrode of the solid-state battery; in this embodiment, the lining membrane adopts the PP membrane, and after the lithium area was rolled, the PP membrane can laminate on the lithium area surface and take together the rolling with the lithium area, because the adhesive force of PP membrane is very little, basically there is the adhesion force between PP membrane and the lithium area to the tensile force that the PP membrane can bear is tens times of the lithium area, consequently, when the lithium area lining membrane unreels the in-process, the PP membrane can play better traction, prevents that the lithium area from being broken by the stretch-break.
Referring to fig. 1 and 3, the lithium-coated film unwinding mechanism 11 includes a lithium-coated film unwinding roller 111 rotatably connected to the mounting plate 1, and a lithium-coated film unwinding motor 112 for driving the lithium-coated film unwinding roller 111 to rotate, wherein the lithium-coated film unwinding motor 112 is fixed to the mounting plate 1, and an ultrathin lithium strip and PP film after being rolled are wound on the lithium-coated film unwinding roller 111, and the lithium-coated film unwinding motor 112 drives the lithium-coated film unwinding roller 111 to gradually unwind during the unwinding process.
Referring to fig. 1, 2 and 3, a peeling roller 15 is provided between the lithium-band liner unreeling mechanism 11 and the liner reeling mechanism 12, the peeling roller 15 is rotatably connected to the mounting plate 1, and the lithium-band liner composite roll can separate the lithium band from the PP film by the peeling roller 15, so that the PP film can be conveyed to the liner reeling mechanism 12 for reeling, and the lithium band is conveyed to the laminating mechanism 14 to wait for compacting lamination with the copper foil.
The lining film winding mechanism 12 comprises a lining film winding roller 121 rotatably connected to the mounting plate 1 and a lining film winding motor 122 for driving the lining film winding roller 121 to rotate, when the lithium strip lining film composite roll is separated by the stripping roller 15, the lining film is wound on the lining film winding roller 121, under the action of the lining film winding motor 122, the lining film separated from the stripping roller 15 is completely wound on the lining film winding roller 121, and the speed of the lining film winding motor 122 is set to improve the travelling speed of the lining film traction lithium strip, so that the speed of conveying the lithium strip to the laminating mechanism 14 is realized; in addition, after the lithium tape and the lining film are peeled off, the lithium tape between the peeling roller 15 and the covering mechanism 14 is easily affected by the compacting covering speed of the covering mechanism 14 and the winding speed of the lining film winding mechanism 12, so that the breakage or deformation of the lithium tape between the peeling roller 15 and the covering mechanism 14 is easily caused, and therefore, a worker can always make the winding speed of the lining film winding mechanism 12 larger than the covering speed of the covering mechanism 14 by controlling the covering speed of the covering mechanism 14 and the rotating speed of the lining film winding roller 121, so that the lithium tape can be transported more and the breakage or deformation of the lithium tape is avoided.
Referring to fig. 1, 2 and 3, the copper foil unreeling mechanism 13 includes a copper foil unreeling roller 131 rotatably connected to the mounting plate 1 and a copper foil unreeling motor 132 for driving the copper foil unreeling roller 131 to rotate, the copper foil unreeling motor 132 is fixed to the mounting plate 1, before compacting and laminating the lithium strip and the copper foil, a worker installs the rolled copper foil onto the copper foil unreeling roller 131 in advance, and when compacting and laminating the lithium strip and the copper foil, the copper foil is gradually conveyed onto the laminating mechanism 14 under the action of the copper foil unreeling motor 132.
The laminating mechanism 14 comprises a pair of laminating rollers 141 rotatably connected to the mounting plate 1, a laminating motor 142 for simultaneously driving the two laminating rollers 141 to rotate in opposite directions is arranged on the mounting plate 1, the copper foil and lithium strips on two sides of the copper foil jointly pass through the space between the two laminating rollers 141, and under the action of the laminating motor 142, the two laminating rollers 141 laminate the two layers of lithium strips on the copper foil in the middle layer; the mounting plate 1 is also provided with a covering and winding mechanism positioned below the covering mechanism 14, and the covering and winding mechanism can completely wind the covered copper-lithium composite belt to the covering and winding mechanism.
Further, a plurality of rotating rollers 16 are arranged between the lithium band lining film unreeling mechanism 11 and the stripping roller 15, between the lining film reeling mechanism 12 and the stripping roller 15, between the stripping roller 15 and the covering mechanism 14 and between the copper foil unreeling mechanism 13 and the covering mechanism 14, the plurality of rotating rollers 16 are all rotationally connected to the mounting plate 1, the lithium band lining film composite coiled material, the lithium band, the lining film or the copper foil can pass through the corresponding rotating rollers 16, and when the corresponding coiled material is conveyed, the coiled material bypassing the rotating rollers 16 can improve the tension of the coiled material, so that the coiled material is in a tensioned state, and the coiled material is prevented from being loose and put on equipment.
Referring to fig. 1, 2 and 3, since the speed of the tape running between the lithium-coated liner unreeling mechanism 11 and the liner reeling mechanism 12 is easily affected by the tension of the roll, and the diameter of the roll on the lithium-coated liner unreeling mechanism 11 becomes smaller, the diameter of the liner on the liner reeling mechanism 12 becomes larger gradually, and the speed of the tape running is easily affected, the speed of the tape running is easily caused to be smaller than the rotation speed of the laminating roller 141, so that the laminating roller 141 breaks the lithium-coated tape, and therefore, the laminating apparatus further comprises a traction mechanism 2 provided on the mounting plate 1, the traction mechanism 2 being located between the peeling roller 15 and the liner reeling mechanism 12.
The traction mechanism 2 comprises a traction roller 21 rotatably connected to the mounting plate 1 and a traction motor 22 fixed to the mounting plate 1, the traction motor 22 drives the traction roller 21 to rotate, and a lining film for stripping a lithium belt can bypass the traction roller 21, in the process of dragging the lining film, a worker sets the rotating speed of the traction roller 21 by controlling the traction motor 22, so that the rotating speed of the traction roller 21 is greater than the rotating speed of the laminating roller 141, and the precise control of the travelling speeds of the lithium belt and the lining film between the lithium belt lining film unreeling mechanism 11 and the lining film reeling mechanism 12 can be realized under the action of the traction motor 22 and the traction roller 21; in this embodiment, the peeling roller 15 is defined as the point a, the laminating roller 141 is defined as the point B, when the rotation speed of the traction roller 21 is greater than that of the laminating roller 141, the length of the lithium belt sent out by the point a is greater than that required by the lamination of the point B, so that the lithium belt between the point a and the point B can generate micro tension and even a zero tension state due to the front-back speed difference, therefore, through the traction mechanism 2, the accurate control of the traction speed is realized, the tension between the point a and the point B is controlled, and the lithium belt is prevented from breaking under the action of the tension force from the point a to the point B.
Further, in the actual compacting and laminating process of the lithium strip and the copper foil, the staff regulates and controls the speed of the traction roller 21 and the speed of the laminating roller 141, so that the rotation speed of the traction roller 21 is 0.04% -0.06% faster than the rotation speed of the laminating roller 141, in the embodiment of the application, the rotation speed of the traction roller 21 is controlled to be 0.05% faster than the rotation speed of the laminating roller 141 for illustration, the speeds of the traction roller 21 and the laminating roller 141 are set in the mode, the situation that the tension of the lithium strip between the point A and the point B is too high can be effectively avoided, and the tension between the point A and the point B is always ensured to be in the range that the lithium strip can bear.
Referring to fig. 1, 2 and 3, the laminating apparatus further includes a speed control system 3 disposed on the mounting plate 1, the speed control system 3 includes a plurality of speed sensors 31 and a PLC controller 32 fixed on the mounting plate 1, the plurality of speed sensors 31 are respectively used for monitoring the rotation speed of the traction roller 21, the rotation speed of the laminating roller 141 and the speed of the lithium-coated film running tape in real time, the PLC controller 32 is electrically connected with the plurality of speed sensors 31, and the PLC controller 32 is electrically connected with the traction motor 22, the plurality of speed sensors 31 transmit the speed signals monitored in real time to the PLC controller 32, and when the rotation speed of the traction roller 21 or the laminating roller 141 is lower than a set value, the PLC controller 32 can automatically control the traction motor 22 or the laminating motor 142 to make the rotation speed thereof within the set value;
since the speed of the pull roll 21 is 0.05% faster than the rotational speed of the laminating roll 141, the length of the lithium strip from the point a to the point B is greater than the laminating length required for the laminating roll 141 in a certain period of time, thereby accumulating the length of the lithium strip, in order to avoid such a problem, a speed signal for monitoring the speed of the traveling speed of the lithium strip liner film in real time is transmitted to the PLC controller 32 and a speed signal for the laminating roll 141 is transmitted to the PLC controller 32, the speed difference between the two is calculated by the PLC controller 32, and the relationship between the accumulating length of the lithium strip and the time is calculated according to the speed difference, thereby setting on the PLC controller 32, gradually decreasing the rotational speed of the pull roll 21 or gradually increasing the rotational speed of the laminating roll 141 by the PLC controller 32 in a certain period of time, the accumulated lithium strip length can be gradually eliminated, after the time in the time period is over, the accumulated lithium strip length is just eliminated, meanwhile, the PLC 32 can increase the rotating speed of the traction roller 21 again or reduce the rotating speed of the laminating roller 141, so that the rotating speed of the traction roller 21 and the rotating speed of the laminating roller 141 reach a speed difference of 0.05%, the tension of the lithium strip between the point A and the point B is always maintained in the deformation range of the lithium strip, and in the embodiment of the invention, when the rotating speeds of the traction roller 21 and the laminating roller 141 are adjusted, the unwinding speed of the lithium strip liner, the winding speed of the liner film and the unwinding speed of the copper foil are simultaneously adjusted according to actual conditions, and the tension of the lithium strip liner film, the liner film or the copper foil is always maintained; therefore, the speed control system 3 can stabilize the rotation speeds of the traction roller 21 and the laminating roller 141 within the range of the design requirement, thereby achieving the accurate control on the lithium belt and the copper foil during the lamination and avoiding the breakage or deformation of the lithium belt from the point A to the point B.
The implementation principle of the embodiment 1 is as follows: when the lithium belt and the copper foil are coated, the micro tension control on the lithium belt between the stripping roller 15 and the coating roller 141 can be realized through the traction mechanism 2 arranged between the stripping roller 15 and the lining film winding mechanism 12, and the speed of the traction roller 21 is regulated in real time through the speed control system 3 under the action of the traction roller 21, so that the lithium belt between the stripping roller 15 and the coating roller 141 is always in a micro tension or zero tension state, and the tension of the lithium belt can be stably controlled within a range smaller than the deformation of the lithium belt.
Example 2
Referring to fig. 1, 3 and 4, this embodiment is different from embodiment 1 in that a tension control system 4 is provided on a mounting plate 1 between a peeling roller 15 and a laminating roller 141, the provided tension control system 4 is capable of monitoring the tension of a lithium belt between the peeling roller 15 and the laminating roller 141 in real time, the tension control system 4 includes a tension controller 41 provided on the mounting plate 1 and a tension detection roller 42 rotatably connected to the mounting plate 1, the lithium belt is capable of winding up through the tension detection roller 42, and tension sensors 43 are connected to both ends of the tension detection roller 42, the tension sensors 43 are connected to the tension controller 41, and the tension controller 41 is electrically connected to a traction motor 22, thereby realizing detection of the tension of the lithium belt passing through the tension detection roller 42, the detected data is capable of being displayed on the tension controller 41 in real time, when the tension of the lithium belt is monitored, a range value of the tension can be borne by the lithium belt is set on the tension controller 41, when the tension of the lithium belt is monitored to be greater than the set range value, the tension controller 41 is capable of transmitting the tension motor 41 to the traction motor 22 to the set up speed of the traction belt is reduced until the traction speed of the lithium belt is reduced to a set up range.
Referring to fig. 1, 3 and 5, the laminating apparatus further includes a deviation rectifying control system 5 disposed on the lithium strip and the copper foil between the peeling roller 15 and the laminating roller 141, the deviation rectifying control system 5 includes a deviation rectifying controller 51 disposed on the mounting board 1 and a grating sensor 52, the deviation rectifying sensor is electrically connected with the grating sensor 52, the grating sensor 52 is located at an edge position of the copper foil or the lithium strip, a deviation amount of the copper foil or the lithium strip is monitored by the grating sensor 52, and an electric signal is transmitted to the deviation rectifying controller 51; the deviation rectifying control system 5 further comprises a deviation rectifying control component 53 for correcting the deviation of the copper foil or the lithium belt, the deviation rectifying control component 53 comprises a bearing plate 531 fixed on the mounting plate 1 and a rotating motor 532 fixed on the bearing plate 531, a mounting frame 533 is fixedly connected to an output shaft of the rotating motor 532, the length direction of the mounting frame 533 is identical to the width direction of the copper foil or the lithium belt, two deviation rectifying rollers 534 are rotatably connected inside the mounting frame 533, the length direction of the deviation rectifying rollers 534 is identical to the length direction of the mounting frame 533, the lithium belt can pass through the two deviation rectifying rollers 534, a grating sensor 52 is fixed on one side of the mounting frame 533, the rotating motor 532 is electrically connected with the deviation rectifying controller 51, when the lithium belt deflects in the conveying direction, the grating sensor 52 transmits a monitored signal to the deviation rectifying controller 51, the rotating motor 532 is controlled to rotate by the deviation rectifying controller 51, thereby driving the two deviation rectifying rollers 534 to rotate, the rotating deviation rectifying rollers 534 deflect with the lithium belt, and the conveying direction of the lithium belt is deflected, and the purpose of deviation rectifying is achieved.
The discharging sides of the lithium strip film unreeling mechanism 11 and the copper foil unreeling mechanism 13 are respectively provided with a discharging detection mechanism, each discharging detection mechanism comprises an infrared sensor 6 fixed on the mounting plate 1, each infrared sensor 6 is located at the edge of a lithium strip film coiled material or the edge of a copper foil, each infrared sensor 6 is connected with the corresponding PLC 32, each PLC is electrically connected with the corresponding lithium strip film unreeling motor 112, the corresponding liner film reeling motor 122, the corresponding traction motor 22, the corresponding copper foil unreeling motor 132 and the corresponding laminating motor 142, when the corresponding infrared sensor 6 does not detect the corresponding lithium strip film and the corresponding copper foil, signals are transmitted to the corresponding PLC 32, and then the corresponding lithium strip film unreeling motor 112, the corresponding liner film reeling motor 122, the corresponding traction motor 22, the corresponding copper foil unreeling motor 132 and the corresponding laminating motor 142 are controlled by the corresponding PLC 32 to stop working, so that new coiled materials can be replaced by workers.
Referring to fig. 1, 3 and 6, a dimple assembly is provided between the copper foil unreeling mechanism 13 and the laminating mechanism 14, the dimple assembly includes a pair of dimple rollers 7 symmetrically provided on both sides of the copper foil, the two dimple rollers 7 are rotatably connected to the mounting plate 1, and the copper foil can pass between the two dimple rollers 7, a driving motor driving the two dimple rollers 7 to rotate is further provided on the mounting plate 1, a plurality of dimple blocks 72 are fixedly connected to the circumferential surfaces of the two dimple rollers 7, and when the copper foil is conveyed to the laminating mechanism 14, the two dimple rollers 7 can press grooves on the surface of the copper foil, and when the lithium strip is laminated on both sides of the copper foil, the copper foil and the lithium strip can be laminated more tightly.
The implementation principle of the embodiment 2 is as follows: when the lithium belt is conveyed to the laminating mechanism 14, the tension of the lithium belt separated from the lining film can be monitored in real time through the tension control system 4, and when the tension of the lithium belt is greater than a set value, the transfer of the traction roller 21 or the laminating roller 141 can be timely adjusted, so that the tension of the lithium belt is timely reduced, and breakage or deformation of the lithium belt is avoided.
Example 3
Referring to fig. 1 and 2, the difference between this embodiment and embodiment 1 is that the laminating apparatus includes a heating assembly disposed below the laminating mechanism 14, and two liner film winding mechanisms 12 are disposed below the heating assembly and at positions on both sides of the heating assembly, the lithium-band liner film composite coiled material can be simultaneously conveyed to the laminating mechanism 14 to be laminated with the copper foil, the heating assembly includes a pair of heating rollers rotatably connected to the mounting plate 1, the coiled material after compounding the lithium band and the copper foil can pass between the two heating rollers, and the heating rollers are attached to the liner film, after the heating rollers contact the liner film, the liner film can be heated, so that the liner film can be peeled off from the surface of the lithium band better, the peeled liner film can be wound on the liner film winding mechanisms 12, by adopting this method, the lithium band and the liner film can be pressed and laminated, the state that the lithium band is separately pulled can be avoided, and the lithium band is prevented from being torn or deformed.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (6)
1. The utility model provides a cover device of copper lithium composite tape which characterized in that: the lithium-ion battery pack comprises a mounting plate (1), wherein a lithium-ion battery pack unreeling mechanism (11), a lining membrane winding mechanism (12), a copper foil unreeling mechanism (13) and a covering mechanism (14) are arranged on the mounting plate (1), the lithium-ion battery pack unreeling mechanism (11) and the lining membrane winding mechanism (12) are positioned at the position above one side of the covering mechanism (14), the copper foil unreeling mechanism (13) is positioned above the covering mechanism (14), a stripping roller (15) for stripping the lining membrane is arranged between the lithium-ion battery pack unreeling mechanism (11) and the lining membrane winding mechanism (12), and the covering mechanism (14) compresses a lithium belt and a copper foil for stripping the lining membrane; the covering mechanism (14) comprises a pair of covering rollers (141) rotatably connected with the mounting plate (1) and a covering motor (142) for driving the covering rollers (141) to rotate; the lining film winding mechanism (12) comprises a lining film winding roller (121) rotatably connected to the mounting plate (1) and a lining film winding motor (122) for driving the lining film winding roller (121) to rotate, and the rotating speed of the lining film winding roller (121) is greater than that of the covering roller (141);
the device is characterized in that a traction mechanism (2) for drawing the lining film is arranged on the mounting plate (1), the traction mechanism (2) is positioned between the stripping roller (15) and the lining film winding mechanism (12), the traction mechanism (2) comprises a traction roller (21) rotatably connected to the mounting plate (1) and a traction motor (22) for driving the traction roller (21) to rotate, the traction roller (21) is used for controlling the tape feeding speed of the lining film, and the rotation speed of the traction roller (21) is greater than that of the laminating roller (141);
the speed of the traction roller (21) is 0.04% -0.06% faster than that of the covering roller (141).
2. The cladding device of a copper lithium composite strip according to claim 1, wherein: the laminating device further comprises a speed control system (3) for eliminating the redundant length of the lithium belt between the peeling roller (15) and the laminating roller (141), the speed control system (3) comprises a plurality of speed sensors (31) and a PLC (programmable logic controller) 32, the speed sensors (31) are respectively used for monitoring the rotating speed of the traction roller (21), the rotating speed of the laminating roller (141) and the travelling speed of the lithium belt lining film, the PLC (32) is respectively electrically connected with the speed sensors (31), and the PLC (32) is electrically connected with the traction motor (22).
3. The cladding device of a copper lithium composite strip according to claim 1, wherein: the laminating device further comprises a tension control system (4) for controlling the tension of the lithium belt between the peeling roller (15) and the laminating roller (141), the tension control system (4) comprises a tension controller (41) and a tension detection roller (42) which is rotatably connected to the mounting plate (1) and used for detecting the tension of the lithium belt, two ends of the tension detection roller (42) are connected with tension sensors (43), the tension controller (41) is connected with the tension sensors (43), and the tension controller (41) is connected with a traction motor (22).
4. The cladding device of a copper lithium composite strip according to claim 1, wherein: the laminating device further comprises a correction control system (5) acting on the copper foil and the lithium belt, the correction control system (5) comprises a correction controller (51), a correction control component (53) used for correcting the offset of the copper foil or the lithium belt and a grating sensor (52) arranged at the edge of the copper foil or the lithium belt, the grating sensor (52) is connected with the correction controller (51), and the correction controller (51) is connected with the correction control component (53).
5. The cladding device of a copper lithium composite strip according to claim 1, wherein: the lithium area lining membrane unreeling mechanism (11) and the copper foil unreeling mechanism (13) are respectively provided with a discharge detection mechanism on the discharge side, each discharge detection mechanism comprises an infrared sensor (6) arranged on a mounting plate (1), each infrared sensor (6) is located at the edge of the lithium area lining membrane or the edge of the copper foil, each infrared sensor (6) is connected with a PLC (32), and each PLC (32) is connected with a traction motor (22) and a laminating motor (142).
6. The cladding device of a copper lithium composite strip according to claim 1, wherein: the copper foil unreeling machine is characterized in that a indent assembly is arranged between the copper foil unreeling mechanism (13) and the laminating mechanism (14), the indent assembly comprises a pair of indent rollers (7) which are symmetrically arranged, copper foil passes through the two indent rollers (7), a plurality of indent blocks (72) are uniformly fixed on the peripheral surface of each indent roller (7), and a driving motor for driving the indent rollers (7) to rotate is arranged at the end part of each indent roller.
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| JP2000190442A (en) * | 1998-12-28 | 2000-07-11 | Hitachi Aic Inc | Apparatus for laminating film |
| JP3878111B2 (en) * | 2002-11-15 | 2007-02-07 | 株式会社不二鉄工所 | Film unwinding method and apparatus |
| JP6352730B2 (en) * | 2014-08-27 | 2018-07-04 | 株式会社Ｓｃｒｅｅｎホールディングス | Membrane / catalyst layer assembly manufacturing apparatus and manufacturing method |
| KR101678803B1 (en) * | 2016-06-03 | 2016-11-22 | 주식회사 엘지화학 | The system and method for manufacturing optical display element |
| CN106025367B (en) * | 2016-07-14 | 2018-05-22 | 宁德时代新能源科技股份有限公司 | Calendering tectorial membrane mends lithium all-in-one |
| JP7427462B2 (en) * | 2020-02-07 | 2024-02-05 | Ｄｏｗａメタルテック株式会社 | Masking tape winding device and winding method |
| CN216971509U (en) * | 2021-06-07 | 2022-07-15 | 汇精（厦门）电子科技有限公司 | Pad pasting production facility |
| CN114103386B (en) * | 2021-11-16 | 2023-10-13 | 上海联净电子科技有限公司 | Lithium belt rolling equipment, lithium copper double-sided compounding equipment and lithium copper double-sided compounding method |
| CN218340801U (en) * | 2022-09-29 | 2023-01-20 | 重庆天齐锂业有限责任公司 | Current collector coarsening device and negative electrode composite system |
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Address after: No. 18 Dongxin Street, Dongyong Town, Nansha District, Guangzhou City, Guangdong Province, 511458 Patentee after: Guangdong Jiemeng Intelligent Equipment Co.,Ltd. Country or region after: China Address before: No. 18 Mafa Street, Dongyong Town, Nansha District, Guangzhou City, Guangdong Province, 511458 Patentee before: Guangdong jiemeng Intelligent Equipment Co.,Ltd. Country or region before: China |