CN221201260U - Double-sided lithium supplementing system - Google Patents
Double-sided lithium supplementing system Download PDFInfo
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- CN221201260U CN221201260U CN202322707615.5U CN202322707615U CN221201260U CN 221201260 U CN221201260 U CN 221201260U CN 202322707615 U CN202322707615 U CN 202322707615U CN 221201260 U CN221201260 U CN 221201260U
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- roller
- lithium
- protective film
- calendaring
- pole piece
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 144
- 230000001502 supplementing effect Effects 0.000 title abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 154
- 238000003490 calendering Methods 0.000 claims abstract description 71
- 239000011888 foil Substances 0.000 claims abstract description 62
- 238000003825 pressing Methods 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011889 copper foil Substances 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims description 109
- 238000005096 rolling process Methods 0.000 claims description 47
- 238000004804 winding Methods 0.000 claims description 40
- 238000004140 cleaning Methods 0.000 claims description 33
- 238000010030 laminating Methods 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 230000009469 supplementation Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 4
- 229920002799 BoPET Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to the technical field of electronic manufacturing, in particular to a double-sided lithium supplementing system, which comprises a pole piece unreeling mechanism, an A-side press-coating mechanism, a B-side press-coating mechanism, a copper foil unreeling mechanism and a pole piece reeling mechanism, wherein the pole piece unreeling mechanism can release a pole piece, the A-side press-coating mechanism can press-coat an A-side lithium belt on an A-side of the pole piece, the B-side press-coating mechanism can press-coat a B-side lithium belt on a B-side of the pole piece, and the pole piece reeling mechanism can roll up the pole piece with the A-side lithium foil and the B-side lithium foil on two sides and the copper foil released by the copper foil unreeling mechanism. According to the utility model, the A-side pressing mechanism and the B-side pressing mechanism are arranged to enable the lithium foil to be attached to both sides of the pole piece, so that the problem of lithium supplementation of the battery is solved, lithium supplementation on the pole piece is realized, and the first protection film retraction mechanism, the second protection film retraction mechanism and the third protection film retraction mechanism are arranged to protect a lithium belt during calendaring and covering, prevent the lithium from sticking to the calendaring roller, reduce the faults of the calendaring mechanism and improve the production efficiency.
Description
Technical Field
The utility model relates to the technical field of electronic manufacturing, in particular to a double-sided lithium supplementing system.
Background
The lithium battery has irreversible capacity attenuation in the first charge and discharge, and after the first effect, a method capable of timely supplementing lithium ions is needed to improve the energy density of the battery and prolong the cycle service life of the battery. The existing lithium supplementing technology is insufficient in energy density improvement, such as adding a lithium-rich material when stirring a positive electrode; there are also negative electrode lithium supplements that are extremely complex in process and structure, such as a way to calender the lithium tape to be laminated to the pole piece, requiring a high standard PET film to transfer the lithium foil.
Disclosure of utility model
In order to solve the problems in the background art, the utility model provides a double-sided lithium supplementing system which is used for reducing the cost in the lithium supplementing process of a negative plate and solving the problems of the prior art that the back film is not enough in retraction and binding force.
The utility model solves the technical problems by adopting the following scheme: the double-sided lithium supplementing system comprises a pole piece unreeling mechanism, an A-side press-coating mechanism, a B-side press-coating mechanism, a copper foil unreeling mechanism and a pole piece reeling mechanism, wherein the pole piece unreeling mechanism can unreel pole pieces, the A-side press-coating mechanism can calender an A-side lithium belt into an A-side lithium foil and cover the A-side of the pole piece, the B-side press-coating mechanism can calender a B-side lithium belt into a B-side lithium foil and cover the B-side of the pole piece, and the pole piece reeling mechanism can roll the pole piece covered with the A-side lithium foil and the B-side lithium foil together with the copper foil released by the copper foil unreeling mechanism; the A-side laminating mechanism comprises a first protective film collecting and releasing mechanism, a first calendaring roller, a first fixed roller, a first laminating movable roller and an A-side lithium strip unreeling mechanism, wherein the rotating shaft center line of the first calendaring roller, the rotating shaft center line of the first fixed roller and the rotating shaft center line of the first laminating movable roller are all coplanar, the first fixed roller is arranged between the first calendaring roller and the first laminating movable roller, the first protective film on the first protective film collecting and releasing mechanism and the A-side lithium strip released by the A-side lithium strip unreeling mechanism pass through the first calendaring roller and the first fixed roller together, the A-side lithium foil after calendaring is attached to the first fixed roller, and the pole piece and the A-side lithium foil pass through the first laminating movable roller and the first fixed roller together and transfer the A-side lithium foil to the A-side of the pole piece; the B-side pressing and covering mechanism comprises a second protective film collecting and releasing mechanism, a third protective film collecting and releasing mechanism, a second calendaring roller, a second fixed roller, a second covering and closing movable roller and a B-side lithium strip unreeling mechanism, the rotating shaft center line of the second calendaring roller, the rotating shaft center line of the second fixed roller and the rotating shaft center line of the second covering and closing movable roller are all coplanar, the second fixed roller is arranged between the second calendaring roller and the second covering and closing movable roller, the second protective film on the second protective film collecting and releasing mechanism and the B-side lithium strip released by the B-side lithium strip unreeling mechanism pass through the second calendaring roller and the second fixed roller together, the rolled B-side lithium foil is attached to the second fixed roller, the third protective film, the B-side lithium foil, the pole piece and the A-side lithium foil pass through the second covering and closing movable roller together, the second fixed roller and the B-side lithium foil of the pole piece are transferred onto the B-side of the pole piece so that the A-side lithium foil and the B-side lithium foil are attached to the pole piece together.
In the above-mentioned structure, first protection film winding and unwinding mechanism includes unreeling roller, wind-up roll, and first protection film is installed on unreeling roller, wind-up roll, first calender roll, and first protection film is annular so that on unreeling roller, wind-up roll, first calender roll cyclic utilization.
In the above structure, the second protection film winding and unwinding mechanism comprises an unwinding roller and a winding roller, the second protection film is arranged on the unwinding roller, the winding roller and the second calendaring roller, and the second protection film is annular so as to be recycled on the unwinding roller, the winding roller and the second calendaring roller.
In the above structure, the third protection film winding and unwinding mechanism comprises an unwinding roller and a winding roller, the third protection film is arranged on the unwinding roller, the winding roller and the second covering movable roller, and the third protection film is annular so as to be recycled on the unwinding roller, the winding roller and the second covering movable roller.
In the above-mentioned structure, still including being used for supporting the first back of the body roller that rolls of first calendering, first back of the body roller that rolls sets up between first back of the body roller that rolls, first fixed roller, the pivot central line of first back of the body roller that rolls and the pivot central line of first back of the body roller, the pivot central line of first fixed roller, the pivot central line of first cover and close the movable roller all coplane, the diameter of first back of the body roller is less in order to improve the pressure angle of pressure time delay than the diameter of first fixed roller.
In the structure, the second rolling back roller is used for supporting the second rolling roller, the second rolling roller is arranged between the second rolling back roller and the second fixed roller, the rotating shaft center line of the second rolling back roller is coplanar with the rotating shaft center line of the second rolling roller, the rotating shaft center line of the second fixed roller and the rotating shaft center line of the second covering movable roller, and the diameter of the second rolling roller is smaller than that of the second fixed roller so as to improve the pressure angle of the pressing delay.
In the structure, the first protective film on the first protective film collecting and releasing mechanism, the second protective film on the second protective film collecting and releasing mechanism and the third protective film on the third protective film collecting and releasing mechanism are PET protective films or PP protective films.
In the above structure, there is a speed difference between the linear speed of the first rolling roller and the linear speed of the first fixed roller so as to cut the a-plane lithium strip during rolling to form the a-plane lithium foil.
In the above structure, there is a speed difference between the linear speed of the second rolling roller and the linear speed of the second fixed roller so as to cut the B-side lithium strip during rolling to form the B-side lithium foil.
In the above structure, the lithium ion battery further comprises a first cleaning mechanism for cleaning the first protective film, a second cleaning mechanism for cleaning the second protective film, and a third cleaning mechanism for cleaning the third protective film, wherein the first cleaning mechanism is in contact with the first protective film on the first protective film collecting and releasing mechanism so as to clean lithium particles adhered on the first protective film, the second cleaning mechanism is in contact with the second protective film on the second protective film collecting and releasing mechanism so as to clean lithium particles adhered on the second protective film, and the third cleaning mechanism is in contact with the third protective film on the third protective film collecting and releasing mechanism so as to clean lithium particles adhered on the third protective film.
In summary, the beneficial effects of the utility model are as follows: the lithium foil is attached to the two sides of the pole piece through the A-side pressing mechanism and the B-side pressing mechanism, so that the problem of lithium supplementation of the battery is solved, lithium supplementation on the pole piece is realized, and the lithium belt is protected during calendaring and covering through the first protection film retracting mechanism, the second protection film retracting mechanism and the third protection film retracting mechanism, so that the lithium belt is prevented from being stuck to the calendaring roller, faults of the calendaring mechanism are reduced, and the production efficiency is improved.
The foregoing description is only an overview of the technical solution of the present utility model, and may be implemented according to the content of the specification in order to make the technical means of the present utility model more clearly understood, and in order to make the above and other objects, features and advantages of the present utility model more clearly understood, the following specific preferred embodiment is given by way of the following detailed description in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic illustration of the present utility model;
fig. 2 is a schematic view of another structure of the present utility model.
In the figure: 1. a pole piece unreeling mechanism; 2. a copper foil unreeling mechanism; 3. a pole piece winding mechanism; 4. a lithium belt on the A surface; 5. a B-side lithium belt; 6. a pole piece; 7. a first protective film take-up and pay-off mechanism; 8. a first calender roll; 9. a first fixed roller; 10. a first movable roller; 11. a first protective film; 12. a second protective film take-up and pay-off mechanism; 13. a third protective film take-up and pay-off mechanism; 14. a second calender roll; 15. a second fixed roller; 16. a second movable roller; 17. a second protective film; 18. a third protective film; 19. a first calendaring back roll; 20. a second calendaring back roll; 21. a-side lithium belt unreeling mechanism; 22. the lithium belt unreeling mechanism of the B surface; 23. an unreeling roller; 24. a wind-up roll; 25. a lithium foil on the A surface; 26. a B-side lithium foil; 27. a first cleaning mechanism; 28. a second cleaning mechanism; 29. and a third cleaning mechanism.
Detailed Description
In order that the utility model may be more readily understood, a further description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
It should be noted that, as used herein, the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Unless otherwise indicated, the meaning of "a plurality" is two or more.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between 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 in a specific case.
Referring to the drawings, a double-sided lithium supplementing system comprises a pole piece unreeling mechanism 1, an A-side pressing mechanism, a B-side pressing mechanism, a copper foil unreeling mechanism 2 and a pole piece reeling mechanism 3, wherein the pole piece unreeling mechanism 1 can release a pole piece 6, the A-side pressing mechanism can roll an A-side lithium belt 4 into an A-side lithium foil 25 and cover the A-side of the pole piece 6, the B-side pressing mechanism can roll a B-side lithium belt 5 into a B-side lithium foil 26 and cover the B-side of the pole piece 6, and the pole piece reeling mechanism 3 can roll the pole piece 6 covered with the A-side lithium foil 25 and the B-side lithium foil 26 and the copper foil released by the copper foil unreeling mechanism 2 together; the A-side laminating mechanism comprises a first protective film collecting and releasing mechanism 7, a first calendaring roller 8, a first fixed roller 9, a first laminating movable roller 10 and an A-side lithium strip unreeling mechanism 21, wherein the rotating shaft center line of the first calendaring roller 8, the rotating shaft center line of the first fixed roller 9 and the rotating shaft center line of the first laminating movable roller 10 are all coplanar, the first fixed roller 9 is arranged between the first calendaring roller 8 and the first laminating movable roller 10, the first protective film 11 on the first protective film collecting and releasing mechanism 7 and the A-side lithium strip 4 released by the A-side lithium strip unreeling mechanism 21 pass through the first calendaring roller 8 and the first fixed roller 9 together, the A-side lithium foil 25 is attached to the first fixed roller 9 after calendaring, the pole piece 6 and the A-side lithium foil 25 pass through the first laminating movable roller 10 and the first fixed roller 9 together, and the A-side lithium foil 25 is transferred onto the A-side of the pole piece 6 by the first fixed roller 9; the B-side laminating mechanism comprises a second protective film collecting and releasing mechanism 12, a third protective film collecting and releasing mechanism 13, a second calendaring roller 14, a second fixed roller 15, a second laminating movable roller 16 and a B-side lithium strip unreeling mechanism 22, the rotation axis center line of the second calendaring roller 14, the rotation axis center line of the second fixed roller 15 and the rotation axis center line of the second laminating movable roller 16 are all coplanar, the second fixed roller 15 is arranged between the second calendaring roller 14 and the second laminating movable roller 16, the second protective film 17 on the second protective film collecting and releasing mechanism 12 and the B-side lithium strip 5 released by the B-side lithium strip unreeling mechanism 22 pass through the second calendaring roller 14 and the second fixed roller 15 together, the B-side lithium foil 26 after calendaring is attached to the second fixed roller 15, the third protective film 18, the B-side lithium foil 26 and the pole piece 6 and the a-side lithium foil 25 pass through the second laminating movable roller 16 and the second fixed roller 15 together, and the second fixed roller 15 transfers the B-side lithium foil 26 to the B-side lithium foil 26 of the pole piece 6 so that the B-side lithium foil 26 and the a-side lithium foil 26 are attached to the pole piece 6 and the B-side lithium foil 25.
Further, the first protective film winding and unwinding mechanism 7, the second protective film winding and unwinding mechanism 12 and the third protective film winding and unwinding mechanism 13 comprise an unwinding roller 23 and a winding roller 24, and the protective film thereon is unwound from the unwinding roller 23, passed through a press coating mechanism and then retracted by the winding roller 24, as shown in fig. 2.
Further, the first protection film winding and unwinding mechanism 7 includes an unwinding roller 23 and a winding roller 24, the first protection film 11 is mounted on the unwinding roller 23, the winding roller 24 and the first calendaring roller 8, and the first protection film 11 is annular so as to be recycled on the unwinding roller 23, the winding roller 24 and the first calendaring roller 8, as shown in fig. 1.
Further, the second protective film winding and unwinding mechanism 12 includes an unwinding roller 23 and a winding roller 24, the second protective film 17 is mounted on the unwinding roller 23, the winding roller 24 and the second calendaring roller 14, and the second protective film 17 is annular so as to be recycled on the unwinding roller 23, the winding roller 24 and the second calendaring roller 14.
Further, the third protective film winding and unwinding mechanism 13 includes an unwinding roller 23 and a winding roller 24, the third protective film 18 is mounted on the unwinding roller 23, the winding roller 24 and the second laminating movable roller 16, and the third protective film 18 is annular so as to be recycled on the unwinding roller 23, the winding roller 24 and the second laminating movable roller 16.
Further, the rolling machine further comprises a first rolling back roller 19 for supporting the first rolling roller 8, wherein the first rolling roller 8 is arranged between the first rolling back roller 19 and the first fixed roller 9, the rotating shaft center line of the first rolling back roller 19 is coplanar with the rotating shaft center line of the first rolling roller 8, the rotating shaft center line of the first fixed roller 9 and the rotating shaft center line of the first covering movable roller 10, and the diameter of the first rolling roller 8 is smaller than that of the first fixed roller 9 so as to improve the pressure angle of the rolling time delay.
Further, the second calendaring back roll 20 for supporting the second calendaring roll 14 is further included, the second calendaring roll 14 is arranged between the second calendaring back roll 20 and the second fixed roll 15, the rotating shaft center line of the second calendaring back roll 20 is coplanar with the rotating shaft center line of the second calendaring roll 14, the rotating shaft center line of the second fixed roll 15 and the rotating shaft center line of the second covering movable roll 16, and the diameter of the second calendaring roll 14 is smaller than that of the second fixed roll 15 so as to improve the pressure angle of the pressing delay.
Further, the first protective film 11 on the first protective film receiving and releasing mechanism 7, the second protective film 17 on the second protective film receiving and releasing mechanism 12, and the third protective film 18 on the third protective film receiving and releasing mechanism 13 are all nonmetallic films such as PET protective films or PP protective films.
Further, there is a speed difference between the linear speed of the first calender roll 8 and the linear speed of the first fixed roll 9 so that the a-side lithium strip 4 is cut during the calendering process to form the a-side lithium foil 25.
Further, there is a speed difference between the linear speed of the second calender roll 14 and the linear speed of the second fixed roll 15 so that the B-side lithium strip 5 is cut during the calendering process to form the B-side lithium foil 26.
Further, the pole piece unreeling mechanism 1, the copper foil unreeling mechanism 2 and the pole piece reeling mechanism 3 all comprise unreeling rollers.
Further, a first cleaning mechanism 27 for cleaning the first protective film, a second cleaning mechanism 28 for cleaning the second protective film, and a third cleaning mechanism 29 for cleaning the third protective film are also included, the first cleaning mechanism 27 being in contact with the first protective film 11 on the first protective film housing mechanism 7 so as to clean lithium particles adhering to the first protective film 11, the second cleaning mechanism 28 being in contact with the second protective film 17 on the second protective film housing mechanism 12 so as to clean lithium particles adhering to the second protective film 17, the third cleaning mechanism 29 being in contact with the third protective film 18 on the third protective film housing mechanism 13 so as to clean lithium particles adhering to the third protective film 18. The first cleaning mechanism 27, the second cleaning mechanism 28, and the third cleaning mechanism 29 are brushes or scrapers.
According to the utility model, the A-side pressing mechanism and the B-side pressing mechanism are arranged to enable the lithium foil to be attached to both sides of the pole piece 6, so that the problem of lithium supplementation of a battery is solved, lithium supplementation on the pole piece is realized, and the first protective film collecting and releasing mechanism 7, the second protective film collecting and releasing mechanism 12 and the third protective film collecting and releasing mechanism 13 are arranged to protect a lithium belt during rolling and covering, prevent the lithium from sticking to a rolling roller, reduce faults of the rolling mechanism and improve production efficiency.
Specifically, the method has the following beneficial effects:
1, the PET used for protection can be recycled, so that the working intensity of manual film changing is reduced, and the operation cost is reduced;
2, the utility model cancels the high-standard PET film, thereby improving the working efficiency and reducing the failure rate and the cost;
3, by arranging the placement roller 23 and the winding roller 24, the utility model prevents the first protective film 11 from interfering with the first calendaring back roller 19 because the diameter of the first calendaring roller 8 is smaller than that of the first calendaring back roller 19 when the first protective film 11 is recycled, and the first protective film collecting and releasing mechanism 7, the second protective film collecting and releasing mechanism 12 and the third protective film collecting and releasing mechanism 13 are the same;
4, forming a lithium belt rolling combination by arranging a rolling roller and a fixed roller, wherein a protective PET film is arranged on the side of the rolling roller, the A-side lithium foil 25 and/or the B-side lithium foil 26 are prevented from sticking to the rolling roller, the rolled A-side lithium foil 25 and/or B-side lithium foil 26 are attached to the fixed roller, and the thickness of the lithium belt is as follows: 1mm, 1.5mm, 2mm are unequal; thickness of lithium foil: 3-5 um;
5, forming a covering combination by arranging a fixed roller and a covering movable roller, wherein the fixed roller transfers the lithium foil on the roller to the pole piece 6 and compacts the lithium foil;
6, by arranging a rolling and covering integrated module, two sets of modules correspond to the front and back sides of the pole piece 6, and a third protective film is designed in the rolling and covering integrated module for protecting the surface of the pole piece 6, because a layer of lithium is attached to the front side of the pole piece 6;
7, through setting up big roller and little roller and combining together, solved following problem: the diameter is larger, the pressure angle is smaller, the stress area is larger, the rolling effect is not ideal, if the diameter is smaller, the pressure angle is larger, the stress area is smaller, but the diameter is smaller, the stress is smaller, and the rolling effect is also not ideal. By arranging the first rolling back roller 19 and the second rolling back roller 20, the problem that the first rolling roller 8 and the second rolling roller 14 cannot bear large force is solved, the problem that the large pressure angle of the diameter is small is solved, and a good rolling effect is achieved.
The above examples are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and modifications made by those skilled in the art based on the present utility model are included in the scope of the present utility model.
Claims (10)
1. The utility model provides a two-sided lithium system that mends which characterized in that: the pole piece unreeling mechanism can discharge pole pieces, the A-side laminating mechanism can calender A-side lithium strips into A-side lithium foils and cover the A-side of the pole pieces, the B-side laminating mechanism can calender B-side lithium strips into B-side lithium foils and cover the B-side of the pole pieces, and the pole piece reeling mechanism can roll the pole pieces covered with the A-side lithium foils and the B-side lithium foils and the copper foils released by the copper foil unreeling mechanism together; the A-side laminating mechanism comprises a first protective film collecting and releasing mechanism, a first calendaring roller, a first fixed roller, a first laminating movable roller and an A-side lithium strip unreeling mechanism, wherein the central axes of the rotating shaft of the first calendaring roller, the central axis of the rotating shaft of the first fixed roller and the central axis of the rotating shaft of the first laminating movable roller are all coplanar, the first fixed roller is arranged between the first calendaring roller and the first laminating movable roller, the first protective film on the first protective film collecting and releasing mechanism and the A-side lithium strip released by the A-side lithium strip unreeling mechanism pass through the first calendaring roller and the first fixed roller together, the A-side lithium foil after calendaring is attached to the first fixed roller, and the pole piece and the A-side lithium foil pass through the first laminating movable roller and the first fixed roller together and the A-side lithium foil is transferred onto the A-side of the pole piece by the first fixed roller; the B-side laminating mechanism comprises a second protective film collecting and releasing mechanism, a third protective film collecting and releasing mechanism, a second calendaring roller, a second fixed roller, a second laminating movable roller and a B-side lithium strip unreeling mechanism, wherein the rotating shaft center line of the second calendaring roller, the rotating shaft center line of the second fixed roller and the rotating shaft center line of the second laminating movable roller are coplanar, the second fixed roller is arranged between the second calendaring roller and the second laminating movable roller, the B-side lithium strip released by the second protective film collecting and releasing mechanism passes through the second calendaring roller and the second fixed roller together, the B-side lithium foil after calendaring is attached to the second fixed roller, the third protective film, the B-side lithium foil passes through the second laminating movable roller and the second fixed roller together, and the B-side lithium foil is transferred onto the B-side of the B-side lithium foil by the second laminating movable roller and the second fixed roller so that the B-side lithium foil and the B-side lithium foil are attached to the pole piece together.
2. The double sided lithium replenishment system of claim 1 wherein: the rolling device comprises a first rolling back roller, a first rolling back roller and a second rolling back roller, wherein the first rolling back roller is used for supporting the first rolling roller, the first rolling roller is arranged between the first rolling back roller and the first fixed roller, the rotating shaft center line of the first rolling back roller is coplanar with the rotating shaft center line of the first rolling roller, the rotating shaft center line of the first fixed roller and the rotating shaft center line of the first covering movable roller, and the diameter of the first rolling roller is smaller than that of the first fixed roller so as to improve the pressure angle of the pressing delay.
3. The double sided lithium replenishment system of claim 1 wherein: the second calendaring back roller is used for supporting the second calendaring roller, the second calendaring roller is arranged between the second calendaring back roller and the second fixed roller, the rotating shaft center line of the second calendaring back roller is coplanar with the rotating shaft center line of the second calendaring roller, the rotating shaft center line of the second fixed roller and the rotating shaft center line of the second covering movable roller, and the diameter of the second calendaring roller is smaller than that of the second fixed roller so as to improve the pressure angle of the pressing delay.
4. The double sided lithium replenishment system of claim 1 wherein: the lithium ion battery pack further comprises a first cleaning mechanism for cleaning the first protective film, a second cleaning mechanism for cleaning the second protective film and a third cleaning mechanism for cleaning the third protective film, wherein the first cleaning mechanism is in contact with the first protective film on the first protective film collecting and releasing mechanism so as to clean lithium particles adhered on the first protective film, the second cleaning mechanism is in contact with the second protective film on the second protective film collecting and releasing mechanism so as to clean lithium particles adhered on the second protective film, and the third cleaning mechanism is in contact with the third protective film on the third protective film collecting and releasing mechanism so as to clean lithium particles adhered on the third protective film.
5. The double sided lithium replenishment system of claim 1 wherein: the first protection film winding and unwinding mechanism comprises an unwinding roller and a winding roller, wherein the first protection film is arranged on the unwinding roller, the winding roller and the first calendaring roller, and the first protection film is annular so as to be recycled on the unwinding roller, the winding roller and the first calendaring roller.
6. The double sided lithium replenishment system of claim 1 wherein: the second protection film winding and unwinding mechanism comprises an unwinding roller and a winding roller, the second protection film is arranged on the unwinding roller, the winding roller and the second calendaring roller, and the second protection film is annular so as to be recycled on the unwinding roller, the winding roller and the second calendaring roller.
7. The double sided lithium replenishment system of claim 1 wherein: the third protection film winding and unwinding mechanism comprises an unwinding roller and a winding roller, the third protection film is arranged on the unwinding roller, the winding roller and the second covering movable roller, and the third protection film is annular so as to be recycled on the unwinding roller, the winding roller and the second covering movable roller.
8. The double sided lithium replenishment system of claim 1 wherein: the first protective film on the first protective film collecting and releasing mechanism, the second protective film on the second protective film collecting and releasing mechanism and the third protective film on the third protective film collecting and releasing mechanism are PET protective films or PP protective films.
9. The double sided lithium replenishment system of claim 1 wherein: and a speed difference exists between the linear speed of the first calendaring roller and the linear speed of the first fixed roller so as to cut the A-side lithium belt in the calendaring process to form the A-side lithium foil.
10. The double sided lithium replenishment system of claim 1 wherein: and a speed difference exists between the linear speed of the second calendaring roller and the linear speed of the second fixed roller so as to cut the B-side lithium belt in the calendaring process to form the B-side lithium foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322707615.5U CN221201260U (en) | 2023-10-10 | 2023-10-10 | Double-sided lithium supplementing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322707615.5U CN221201260U (en) | 2023-10-10 | 2023-10-10 | Double-sided lithium supplementing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221201260U true CN221201260U (en) | 2024-06-21 |
Family
ID=91518898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322707615.5U Active CN221201260U (en) | 2023-10-10 | 2023-10-10 | Double-sided lithium supplementing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221201260U (en) |
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2023
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